Whamcloud - gitweb
LU-11367 som: integrate LSOM with lfs find
[fs/lustre-release.git] / lustre / utils / lfs.c
index 515f169..0a11a7b 100644 (file)
@@ -23,7 +23,7 @@
  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2016, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -43,6 +43,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <inttypes.h>
 #include <getopt.h>
 #include <string.h>
 #include <mntent.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/param.h>
+#include <sys/xattr.h>
 #include <fcntl.h>
 #include <dirent.h>
 #include <time.h>
 #include <ctype.h>
+#include <zlib.h>
+#include <libgen.h>
+#include <asm/byteorder.h>
+#include "lfs_project.h"
 
 #include <libcfs/util/string.h>
 #include <libcfs/util/ioctl.h>
 #include <lustre/lustreapi.h>
 #include <linux/lustre/lustre_ver.h>
 #include <linux/lustre/lustre_param.h>
+#include <linux/lnet/nidstr.h>
+#include <cyaml.h>
 
 #ifndef ARRAY_SIZE
 # define ARRAY_SIZE(a) ((sizeof(a)) / (sizeof((a)[0])))
 #endif /* !ARRAY_SIZE */
 
 /* all functions */
-static int lfs_setstripe(int argc, char **argv);
 static int lfs_find(int argc, char **argv);
 static int lfs_getstripe(int argc, char **argv);
 static int lfs_getdirstripe(int argc, char **argv);
@@ -87,10 +95,9 @@ static int lfs_check(int argc, char **argv);
 #ifdef HAVE_SYS_QUOTA_H
 static int lfs_setquota(int argc, char **argv);
 static int lfs_quota(int argc, char **argv);
+static int lfs_project(int argc, char **argv);
 #endif
 static int lfs_flushctx(int argc, char **argv);
-static int lfs_cp(int argc, char **argv);
-static int lfs_ls(int argc, char **argv);
 static int lfs_poollist(int argc, char **argv);
 static int lfs_changelog(int argc, char **argv);
 static int lfs_changelog_clear(int argc, char **argv);
@@ -109,24 +116,68 @@ static int lfs_hsm_cancel(int argc, char **argv);
 static int lfs_swap_layouts(int argc, char **argv);
 static int lfs_mv(int argc, char **argv);
 static int lfs_ladvise(int argc, char **argv);
+static int lfs_getsom(int argc, char **argv);
+static int lfs_heat_get(int argc, char **argv);
+static int lfs_heat_set(int argc, char **argv);
+static int lfs_mirror(int argc, char **argv);
+static int lfs_mirror_list_commands(int argc, char **argv);
 static int lfs_list_commands(int argc, char **argv);
+static inline int lfs_mirror_resync(int argc, char **argv);
+static inline int lfs_mirror_verify(int argc, char **argv);
+static inline int lfs_mirror_read(int argc, char **argv);
+static inline int lfs_mirror_write(int argc, char **argv);
+static inline int lfs_mirror_copy(int argc, char **argv);
+
+enum setstripe_origin {
+       SO_SETSTRIPE,
+       SO_MIGRATE,
+       SO_MIGRATE_MDT,
+       SO_MIRROR_CREATE,
+       SO_MIRROR_EXTEND,
+       SO_MIRROR_SPLIT,
+};
+static int lfs_setstripe_internal(int argc, char **argv,
+                                 enum setstripe_origin opc);
+
+static inline int lfs_setstripe(int argc, char **argv)
+{
+       return lfs_setstripe_internal(argc, argv, SO_SETSTRIPE);
+}
+static inline int lfs_setstripe_migrate(int argc, char **argv)
+{
+       return lfs_setstripe_internal(argc, argv, SO_MIGRATE);
+}
+static inline int lfs_mirror_create(int argc, char **argv)
+{
+       return lfs_setstripe_internal(argc, argv, SO_MIRROR_CREATE);
+}
+static inline int lfs_mirror_extend(int argc, char **argv)
+{
+       return lfs_setstripe_internal(argc, argv, SO_MIRROR_EXTEND);
+}
+static inline int lfs_mirror_split(int argc, char **argv)
+{
+       return lfs_setstripe_internal(argc, argv, SO_MIRROR_SPLIT);
+}
 
 /* Setstripe and migrate share mostly the same parameters */
 #define SSM_CMD_COMMON(cmd) \
-       "usage: "cmd" [--stripe-count|-c <stripe_count>]\n"             \
+       "usage: "cmd" [--component-end|-E <comp_end>]\n"                \
+       "                 [--stripe-count|-c <stripe_count>]\n"         \
        "                 [--stripe-index|-i <start_ost_idx>]\n"        \
        "                 [--stripe-size|-S <stripe_size>]\n"           \
-       "                 [--layout|-L <pattern>]\n"            \
+       "                 [--layout|-L <pattern>]\n"                    \
        "                 [--pool|-p <pool_name>]\n"                    \
        "                 [--ost|-o <ost_indices>]\n"                   \
-       "                 [--component-end|-E <comp_end>]\n"
+       "                 [--yaml|-y <yaml_template_file>]\n"           \
+       "                 [--copy=<lustre_src>]\n"
 
 #define SSM_HELP_COMMON \
-       "\tstripe_size:  Number of bytes on each OST (0 filesystem default)\n" \
-       "\t              Can be specified with k, m or g (in KB, MB and GB\n" \
+       "\tstripe_count: Number of OSTs to stripe over (0=fs default, -1 all)\n" \
+       "\tstart_ost_idx: OST index of first stripe (-1=default round robin)\n"\
+       "\tstripe_size:  Number of bytes on each OST (0=fs default)\n" \
+       "\t              Can be specified with K, M or G (for KB, MB, GB\n" \
        "\t              respectively)\n"                               \
-       "\tstart_ost_idx: OST index of first stripe (-1 default)\n"     \
-       "\tstripe_count: Number of OSTs to stripe over (0 default, -1 all)\n" \
        "\tpool_name:    Name of OST pool to use (default none)\n"      \
        "\tlayout:       stripe pattern type: raid0, mdt (default raid0)\n"\
        "\tost_indices:  List of OST indices, can be repeated multiple times\n"\
@@ -135,81 +186,176 @@ static int lfs_list_commands(int argc, char **argv);
        "\t              Or:\n"                                         \
        "\t                -o <ost_1> -o <ost_i>-<ost_j> -o <ost_n>\n"  \
        "\t              If --pool is set with --ost, then the OSTs\n"  \
-       "\t              must be the members of the pool."              \
-       "\tcomp_end:     Extent end of the component\n"                 \
-       "\t              Can be specified with k, m or g (in KB, MB and GB\n" \
-       "\t              respectively, -1 for EOF), it must be aligned with\n"\
-       "\t              the stripe_size\n"
-
-#define SETSTRIPE_USAGE                                                \
-       SSM_CMD_COMMON("setstripe")                             \
-       "                 <directory|filename>\n"               \
-       SSM_HELP_COMMON                                         \
+       "\t              must be the members of the pool.\n"            \
+       "\tcomp_end:     Extent end of component, start after previous end.\n"\
+       "\t              Can be specified with K, M or G (for KB, MB, GB\n" \
+       "\t              respectively, -1 for EOF). Must be a multiple of\n"\
+       "\t              stripe_size.\n"                                      \
+       "\tyaml_template_file:\n"                                             \
+       "\t              YAML layout template file, can't be used with -c,\n" \
+       "\t              -i, -S, -p, -o, or -E arguments.\n"                  \
+       "\tlustre_src:   Lustre file/dir whose layout info is used to set\n"  \
+       "\t              another lustre file or directory, can't used with\n" \
+       "\t              -c, -i, -S, -p, -o, or -E arguments.\n"
+
+#define MIRROR_CREATE_HELP                                                    \
+       "\tmirror_count: Number of mirrors to be created with the upcoming\n"  \
+       "\t              setstripe layout options\n"                           \
+       "\t              It defaults to 1 if not specified; if specified,\n"   \
+       "\t              it must follow the option without a space.\n"         \
+       "\t              The option can also be repeated multiple times to\n"  \
+       "\t              separate mirrors that have different layouts.\n"      \
+       "\tsetstripe options: Mirror layout\n"                                 \
+       "\t              It can be a plain layout or a composite layout.\n"    \
+       "\t              If not specified, the stripe options inherited\n"     \
+       "\t              from the previous component will be used.\n"          \
+       "\tflags:        set flags to the component of the current mirror.\n"  \
+       "\t              Only \"prefer\" flag is supported so far.\n"
+
+#define MIRROR_EXTEND_HELP                                                    \
+       MIRROR_CREATE_HELP                                                     \
+       "\tvictim_file:  The layout of victim_file will be split and used\n"   \
+       "\t              as a mirror added to the mirrored file.\n"            \
+       "\tno-verify:    This option indicates not to verify the mirror(s)\n"  \
+       "\t              from victim file(s) in case the victim file(s)\n"     \
+       "\t              contains the same data as the original mirrored\n"    \
+       "\t              file.\n"
+
+#define MIRROR_EXTEND_USAGE                                                   \
+       "                 <--mirror-count|-N[mirror_count]>\n"                 \
+       "                 [setstripe options|-f <victim_file>]\n"              \
+       "                 [--no-verify]\n"
+
+#define SETSTRIPE_USAGE                                                        \
+       SSM_CMD_COMMON("setstripe")                                     \
+       MIRROR_EXTEND_USAGE                                             \
+       "                 <directory|filename>\n"                       \
+       SSM_HELP_COMMON                                                 \
+       MIRROR_EXTEND_HELP
 
 #define MIGRATE_USAGE                                                  \
        SSM_CMD_COMMON("migrate  ")                                     \
-       "                 [--block|-b]\n"                               \
-       "                 [--non-block|-n]\n"                           \
+       "                 [--block|-b] [--non-block|-n]\n"              \
+       "                 [--non-direct|-D] [--verbose|-v]\n"           \
        "                 <filename>\n"                                 \
        SSM_HELP_COMMON                                                 \
        "\n"                                                            \
        "\tblock:        Block file access during data migration (default)\n" \
        "\tnon-block:    Abort migrations if concurrent access is detected\n" \
-
-#define SETDIRSTRIPE_USAGE                                     \
-       "               [--mdt-count|-c stripe_count>\n"        \
-       "               [--mdt-index|-i mdt_index]\n"           \
-       "               [--mdt-hash|-H mdt_hash]\n"             \
-       "               [--default|-D] [--mode|-m mode] <dir>\n"        \
+       "\tnon-direct:   Do not use direct I/O to copy file contents\n" \
+       "\tverbose:      Print each filename as it is migrated\n"       \
+
+#define SETDIRSTRIPE_USAGE                                             \
+       "               [--mdt-count|-c stripe_count>\n"                \
+       "               [--mdt-hash|-H mdt_hash]\n"                     \
+       "               [--mdt-index|-i mdt_index[,mdt_index,...]\n"    \
+       "               [--default|-D] [--mode|-o mode] <dir>\n"        \
        "\tstripe_count: stripe count of the striped directory\n"       \
        "\tmdt_index: MDT index of first stripe\n"                      \
        "\tmdt_hash:  hash type of the striped directory. mdt types:\n" \
        "       fnv_1a_64 FNV-1a hash algorithm (default)\n"            \
        "       all_char  sum of characters % MDT_COUNT (not recommended)\n" \
        "\tdefault_stripe: set default dirstripe of the directory\n"    \
-       "\tmode: the mode of the directory\n"
+       "\tmode: the file access permission of the directory (octal)\n"
 
-static const char      *progname;
-static bool             file_lease_supported = true;
+/**
+ * command_t mirror_cmdlist - lfs mirror commands.
+ */
+command_t mirror_cmdlist[] = {
+       { .pc_name = "create", .pc_func = lfs_mirror_create,
+         .pc_help = "Create a mirrored file.\n"
+               "usage: lfs mirror create "
+               "<--mirror-count|-N[mirror_count]> "
+               "[setstripe options] ... <filename|directory>\n"
+         MIRROR_CREATE_HELP },
+       { .pc_name = "extend", .pc_func = lfs_mirror_extend,
+         .pc_help = "Extend a mirrored file.\n"
+               "usage: lfs mirror extend "
+               "<--mirror-count|-N[mirror_count]> [--no-verify] "
+               "[setstripe options|-f <victim_file>] ... <filename>\n"
+         MIRROR_EXTEND_HELP },
+       { .pc_name = "split", .pc_func = lfs_mirror_split,
+         .pc_help = "Split a mirrored file.\n"
+       "usage: lfs mirror split <--mirror-id <mirror_id> | \n"
+       "\t             <--component-id|-I <comp_id>> [--destroy|-d] \n"
+       "\t             [-f <new_file>] <mirrored file>\n"
+       "\tmirror_id:   The numerical unique identifier for a mirror. It\n"
+       "\t             can be fetched by lfs getstripe command.\n"
+       "\tcomp_id:     Unique component ID within a mirror.\n"
+       "\tnew_file:    This option indicates the layout of the split\n"
+       "\t             mirror will be stored into. If not specified,\n"
+       "\t             a new file named <mirrored_file>.mirror~<mirror_id>\n"
+       "\t             will be used.\n" },
+       { .pc_name = "read", .pc_func = lfs_mirror_read,
+         .pc_help = "Read the content of a specified mirror of a file.\n"
+               "usage: lfs mirror read <--mirror-id|-N <mirror_id> "
+               "[--outfile|-o <output_file>] <mirrored_file>\n" },
+       { .pc_name = "write", .pc_func = lfs_mirror_write,
+         .pc_help = "Write to a specified mirror of a file.\n"
+               "usage: lfs mirror write <--mirror-id|-N <mirror_id> "
+               "[--inputfile|-i <input_file>] <mirrored_file>\n" },
+       { .pc_name = "copy", .pc_func = lfs_mirror_copy,
+         .pc_help = "Copy a specified mirror to other mirror(s) of a file.\n"
+               "usage: lfs mirror copy <--read-mirror|-i <id0>> "
+               "<--write-mirror|-o <id1,id2>> <mirrored_file>\n" },
+       { .pc_name = "resync", .pc_func = lfs_mirror_resync,
+         .pc_help = "Resynchronizes out-of-sync mirrored file(s).\n"
+               "usage: lfs mirror resync [--only <mirror_id[,...]>] "
+               "<mirrored file> [<mirrored file2>...]\n"},
+       { .pc_name = "verify", .pc_func = lfs_mirror_verify,
+         .pc_help = "Verify mirrored file(s).\n"
+               "usage: lfs mirror verify "
+               "[--only <mirror_id,mirror_id2[,...]>] "
+               "[--verbose|-v] <mirrored_file> [<mirrored_file2> ...]\n"},
+       { .pc_name = "list-commands", .pc_func = lfs_mirror_list_commands,
+         .pc_help = "list commands supported by lfs mirror"},
+       { .pc_name = "help", .pc_func = Parser_help, .pc_help = "help" },
+       { .pc_name = "exit", .pc_func = Parser_quit, .pc_help = "quit" },
+       { .pc_name = "quit", .pc_func = Parser_quit, .pc_help = "quit" },
+       { .pc_help = NULL }
+};
 
 /* all available commands */
 command_t cmdlist[] = {
        {"setstripe", lfs_setstripe, 0,
-        "Create a new file with a specific striping pattern or\n"
-        "set the default striping pattern on an existing directory or\n"
-        "delete the default striping pattern from an existing directory or\n"
-        "add layout component(s) to an existing composite file or\n"
-        "delete specified component(s) from an existing composite file\n\n"
-        "To delete default striping from an existing directory:\n"
+        "To create a file with specified striping/composite layout, or\n"
+        "create/replace the default layout on an existing directory:\n"
+        SSM_CMD_COMMON("setstripe")
+        "                 <directory|filename>\n"
+        " or\n"
+        "To add component(s) to an existing composite file:\n"
+        SSM_CMD_COMMON("setstripe --component-add")
+        SSM_HELP_COMMON
+        "To totally delete the default striping from an existing directory:\n"
         "usage: setstripe -d <directory>\n"
         " or\n"
-        "To delete component(s) from an existing composite file:\n"
+        "To create a mirrored file or set s default mirror layout on a directory:\n"
+        "usage: setstripe -N[mirror_count] [STRIPE_OPTIONS] <directory|filename>\n"
+        " or\n"
+        "To delete the last component(s) from an existing composite file\n"
+        "(note that this will also delete any data in those components):\n"
         "usage: setstripe --component-del [--component-id|-I <comp_id>]\n"
         "                               [--component-flags|-F <comp_flags>]\n"
         "                               <filename>\n"
-        "\tcomp_id:     Unique component ID\n"
+        "\tcomp_id:     Unique component ID to delete\n"
         "\tcomp_flags:  'init' indicating all instantiated components\n"
-        "\t             '^init' indicating all uninstantiated components\n"
-        "\t-I and -F can't be specified at the same time\n"
-        " or\n"
-        "To add component(s) to an existing composite file:\n"
-        SSM_CMD_COMMON("setstripe --component-add")
-        " or\n"
-        "To create a file with specified striping/composite layout:\n"
-        SETSTRIPE_USAGE},
+        "\t             '^init' indicating all uninstantiated components\n"
+        "\t-I and -F cannot be specified at the same time\n"},
        {"getstripe", lfs_getstripe, 0,
-        "To list the striping info for a given file or files in a\n"
+        "To list the layout pattern for a given file or files in a\n"
         "directory or recursively for all files in a directory tree.\n"
         "usage: getstripe [--ost|-O <uuid>] [--quiet|-q] [--verbose|-v]\n"
-        "                 [--stripe-count|-c] [--stripe-index|-i]\n"
+        "                 [--stripe-count|-c] [--stripe-index|-i] [--fid|-F]\n"
         "                 [--pool|-p] [--stripe-size|-S] [--directory|-d]\n"
-        "                 [--mdt|-m] [--recursive|-r] [--raw|-R] [--yaml|-y]\n"
-        "                 [--layout|-L] [--fid|-F] [--generation|-g]\n"
+        "                 [--mdt-index|-m] [--recursive|-r] [--raw|-R]\n"
+        "                 [--layout|-L] [--generation|-g] [--yaml|-y]\n"
         "                 [--component-id[=comp_id]|-I[comp_id]]\n"
         "                 [--component-flags[=comp_flags]]\n"
         "                 [--component-count]\n"
         "                 [--component-start[=[+-]comp_start]]\n"
         "                 [--component-end[=[+-]comp_end]|-E[[+-]comp_end]]\n"
+        "                 [[!] --mirror-index=[+-]<index> |\n"
+        "                  [!] --mirror-id=[+-]<id>]\n"
         "                 <directory|filename> ..."},
        {"setdirstripe", lfs_setdirstripe, 0,
         "To create a striped directory on a specified MDT. This can only\n"
@@ -217,10 +363,10 @@ command_t cmdlist[] = {
         "usage: setdirstripe [OPTION] <directory>\n"
         SETDIRSTRIPE_USAGE},
        {"getdirstripe", lfs_getdirstripe, 0,
-        "To list the striping info for a given directory\n"
+        "To list the layout pattern info for a given directory\n"
         "or recursively for all directories in a directory tree.\n"
-        "usage: getdirstripe [--obd|-O <uuid>] [--mdt-count|-c]\n"
-        "                    [--mdt-index|-i] [--mdt-hash|-t]\n"
+        "usage: getdirstripe [--mdt-count|-c] [--mdt-index|-m|-i]\n"
+        "                    [--mdt-hash|-H] [--obd|-O <uuid>]\n"
         "                    [--recursive|-r] [--yaml|-y]\n"
         "                    [--default|-D] <dir> ..."},
        {"mkdir", lfs_setdirstripe, 0,
@@ -234,40 +380,43 @@ command_t cmdlist[] = {
         "will become inaccessable after this command. This can only be done\n"
         "by the administrator\n"
         "usage: rm_entry <dir>\n"},
-        {"pool_list", lfs_poollist, 0,
-         "List pools or pool OSTs\n"
-         "usage: pool_list <fsname>[.<pool>] | <pathname>\n"},
-        {"find", lfs_find, 0,
-         "find files matching given attributes recursively in directory tree.\n"
-         "usage: find <directory|filename> ...\n"
-         "     [[!] --atime|-A [+-]N] [[!] --ctime|-C [+-]N]\n"
-         "     [[!] --mtime|-M [+-]N] [[!] --mdt|-m <uuid|index,...>]\n"
-         "     [--maxdepth|-D N] [[!] --name|-n <pattern>]\n"
-         "     [[!] --ost|-O <uuid|index,...>] [--print|-p] [--print0|-P]\n"
-         "     [[!] --size|-s [+-]N[bkMGTPE]]\n"
-         "     [[!] --stripe-count|-c [+-]<stripes>]\n"
-         "     [[!] --stripe-index|-i <index,...>]\n"
-         "     [[!] --stripe-size|-S [+-]N[kMGT]] [[!] --type|-t <filetype>]\n"
-         "     [[!] --gid|-g|--group|-G <gid>|<gname>]\n"
-         "     [[!] --uid|-u|--user|-U <uid>|<uname>] [[!] --pool <pool>]\n"
+       {"pool_list", lfs_poollist, 0,
+        "List pools or pool OSTs\n"
+        "usage: pool_list <fsname>[.<pool>] | <pathname>\n"},
+       {"find", lfs_find, 0,
+        "find files matching given attributes recursively in directory tree.\n"
+        "usage: find <directory|filename> ...\n"
+        "     [[!] --atime|-A [+-]N[smhdwy]] [[!] --ctime|-C [+-]N[smhdwy]]\n"
+        "     [[!] --mtime|-M [+-]N[smhdwy]] [[!] --blocks|-b N]\n"
+        "     [--maxdepth|-D N] [[!] --mdt-index|--mdt|-m <uuid|index,...>]\n"
+        "     [[!] --name|-n <pattern>] [[!] --ost|-O <uuid|index,...>]\n"
+        "     [--print|-P] [--print0|-0] [[!] --size|-s [+-]N[bkMGTPE]]\n"
+        "     [[!] --stripe-count|-c [+-]<stripes>]\n"
+        "     [[!] --stripe-index|-i <index,...>]\n"
+        "     [[!] --stripe-size|-S [+-]N[kMGT]] [[!] --type|-t <filetype>]\n"
+        "     [[!] --gid|-g|--group|-G <gid>|<gname>]\n"
+        "     [[!] --uid|-u|--user|-U <uid>|<uname>] [[!] --pool <pool>]\n"
         "     [[!] --projid <projid>]\n"
         "     [[!] --layout|-L released,raid0,mdt]\n"
         "     [[!] --component-count [+-]<comp_cnt>]\n"
         "     [[!] --component-start [+-]N[kMGTPE]]\n"
         "     [[!] --component-end|-E [+-]N[kMGTPE]]\n"
         "     [[!] --component-flags <comp_flags>]\n"
+        "     [[!] --mirror-count|-N [+-]<n>]\n"
+        "     [[!] --mirror-state <[^]state>]\n"
         "     [[!] --mdt-count|-T [+-]<stripes>]\n"
         "     [[!] --mdt-hash|-H <hashtype>\n"
+        "     [[!] --mdt-index|-m <uuid|index,...>]\n"
          "\t !: used before an option indicates 'NOT' requested attribute\n"
          "\t -: used before a value indicates less than requested value\n"
          "\t +: used before a value indicates more than requested value\n"
-        "\tmdt-hash:   hash type of the striped directory.\n"
+        "\thashtype:   hash type of the striped directory.\n"
         "\t            fnv_1a_64 FNV-1a hash algorithm\n"
         "\t            all_char  sum of characters % MDT_COUNT\n"},
         {"check", lfs_check, 0,
-         "Display the status of MDS or OSTs (as specified in the command)\n"
-         "or all the servers (MDS and OSTs).\n"
-         "usage: check <osts|mds|servers>"},
+        "Display the status of MGTs, MDTs or OSTs (as specified in the command)\n"
+        "or all the servers (MGTs, MDTs and OSTs).\n"
+        "usage: check <mgts|osts|mdts|all>"},
         {"osts", lfs_osts, 0, "list OSTs connected to client "
          "[for specified path only]\n" "usage: osts [path]"},
         {"mdts", lfs_mdts, 0, "list MDTs connected to client "
@@ -292,13 +441,25 @@ command_t cmdlist[] = {
         "       setquota [-t] <-u|--user|-g|--group|-p|--projid>\n"
          "                [--block-grace <block-grace>]\n"
          "                [--inode-grace <inode-grace>] <filesystem>\n"
+        "       setquota <-U|-G|-P>\n"
+        "                -b <block-softlimit> -B <block-hardlimit>\n"
+        "                -i <inode-softlimit> -I <inode-hardlimit> <filesystem>\n"
+        "       setquota <-U|--default-usr|-G|--default-grp|-P|--default-prj>\n"
+        "                [--block-softlimit <block-softlimit>]\n"
+        "                [--block-hardlimit <block-hardlimit>]\n"
+        "                [--inode-softlimit <inode-softlimit>]\n"
+        "                [--inode-hardlimit <inode-hardlimit>] <filesystem>\n"
+        "       setquota <-u|-g|-p> <uname>|<uid>|<gname>|<gid>|<projid>\n"
+        "                <-d|--default>\n"
          "       -b can be used instead of --block-softlimit/--block-grace\n"
          "       -B can be used instead of --block-hardlimit\n"
          "       -i can be used instead of --inode-softlimit/--inode-grace\n"
-        "       -I can be used instead of --inode-hardlimit\n\n"
+        "       -I can be used instead of --inode-hardlimit\n"
+        "       -d can be used instead of --default\n\n"
         "Note: The total quota space will be split into many qunits and\n"
         "      balanced over all server targets, the minimal qunit size is\n"
         "      1M bytes for block space and 1K inodes for inode space.\n\n"
+        "      The maximum quota grace time is 2^48 - 1 seconds.\n\n"
         "      Quota space rebalancing process will stop when this mininum\n"
         "      value is reached. As a result, quota exceeded can be returned\n"
         "      while many targets still have 1MB or 1K inodes of spare\n"
@@ -307,16 +468,22 @@ command_t cmdlist[] = {
         "usage: quota [-q] [-v] [-h] [-o <obd_uuid>|-i <mdt_idx>|-I "
                       "<ost_idx>]\n"
         "             [<-u|-g|-p> <uname>|<uid>|<gname>|<gid>|<projid>] <filesystem>\n"
-        "       quota [-o <obd_uuid>|-i <mdt_idx>|-I <ost_idx>] -t <-u|-g|-p> <filesystem>"},
+        "       quota [-o <obd_uuid>|-i <mdt_idx>|-I <ost_idx>] -t <-u|-g|-p> <filesystem>\n"
+       "        quota [-q] [-v] [h] <-U|-G|-P> <filesystem>"},
+       {"project", lfs_project, 0,
+        "Change or list project attribute for specified file or directory.\n"
+        "usage: project [-d|-r] <file|directory...>\n"
+        "         list project ID and flags on file(s) or directories\n"
+        "       project [-p id] [-s] [-r] <file|directory...>\n"
+        "         set project ID and/or inherit flag for specified file(s) or directories\n"
+        "       project -c [-d|-r [-p id] [-0]] <file|directory...>\n"
+        "         check project ID and flags on file(s) or directories, print outliers\n"
+        "       project -C [-r] [-k] <file|directory...>\n"
+        "         clear the project inherit flag and ID on the file or directory\n"
+       },
 #endif
         {"flushctx", lfs_flushctx, 0, "Flush security context for current user.\n"
          "usage: flushctx [-k] [mountpoint...]"},
-        {"cp", lfs_cp, 0,
-         "Remote user copy files and directories.\n"
-         "usage: cp [OPTION]... [-T] SOURCE DEST\n\tcp [OPTION]... SOURCE... DIRECTORY\n\tcp [OPTION]... -t DIRECTORY SOURCE..."},
-        {"ls", lfs_ls, 0,
-         "Remote user list directory contents.\n"
-         "usage: ls [OPTION]... [FILE]..."},
         {"changelog", lfs_changelog, 0,
          "Show the metadata changes on an MDT."
          "\nusage: changelog <mdtname> [startrec [endrec]]"},
@@ -339,7 +506,7 @@ command_t cmdlist[] = {
         "undergoing actions) for given files.\n usage: hsm_state <file> ..."},
        {"hsm_set", lfs_hsm_set, 0, "Set HSM user flag on specified files.\n"
         "usage: hsm_set [--norelease] [--noarchive] [--dirty] [--exists] "
-        "[--archived] [--lost] <file> ..."},
+        "[--archived] [--lost] [--archive-id NUM] <file> ..."},
        {"hsm_clear", lfs_hsm_clear, 0, "Clear HSM user flag on specified "
         "files.\n"
         "usage: hsm_clear [--norelease] [--noarchive] [--dirty] [--exists] "
@@ -358,23 +525,33 @@ command_t cmdlist[] = {
         "usage: hsm_release [--filelist FILELIST] [--data DATA] <file> ..."},
        {"hsm_remove", lfs_hsm_remove, 0,
         "Remove file copy from external storage.\n"
-        "usage: hsm_remove [--filelist FILELIST] [--data DATA]\n"
-        "                  [--mntpath MOUNTPATH] [--archive NUM] <file|FID> ...\n"
+        "usage: hsm_remove [--filelist FILELIST] [--data DATA] "
+        "[--archive NUM]\n"
+        "                  (FILE [FILE ...] | "
+        "--mntpath MOUNTPATH FID [FID ...])\n"
         "\n"
-        "Note: To remove files from the archive that have been deleted on\n"
-        "Lustre, set mntpath and optionally archive. In that case, all the\n"
-        "positional arguments and entries in the file list must be FIDs."
+        "Note: To remove an archived copy of a file already deleted from a "
+        "Lustre FS, the\n"
+        "--mntpath option and a list of FIDs must be specified"
        },
        {"hsm_cancel", lfs_hsm_cancel, 0,
         "Cancel requests related to specified files.\n"
         "usage: hsm_cancel [--filelist FILELIST] [--data DATA] <file> ..."},
        {"swap_layouts", lfs_swap_layouts, 0, "Swap layouts between 2 files.\n"
         "usage: swap_layouts <path1> <path2>"},
-       {"migrate", lfs_setstripe, 0,
+       {"migrate", lfs_setstripe_migrate, 0,
         "migrate a directory between MDTs.\n"
-        "usage: migrate --mdt-index <mdt_idx> [--verbose|-v] "
-        "<directory>\n"
-        "\tmdt_idx:      index of the destination MDT\n"
+        "usage: migrate [--mdt-count|-c] <stripe_count>\n"
+        "               [--mdt-hash|-H] <hash_type>\n"
+        "               [--mdt-index|-m] <start_mdt_index>\n"
+        "               [--verbose|-v]\n"
+        "               <directory>\n"
+        "\tmdt:        MDTs to stripe over, if only one MDT is specified\n"
+        "                      it's the MDT index of first stripe\n"
+        "\tmdt_count:  number of MDTs to stripe a directory over\n"
+        "\tmdt_hash:   hash type of the striped directory. mdt types:\n"
+        "                      fnv_1a_64 FNV-1a hash algorithm (default)\n"
+        "                      all_char  sum of characters % MDT_COUNT\n"
         "\n"
         "migrate file objects from one OST "
         "layout\nto another (may be not safe with concurent writes).\n"
@@ -383,21 +560,23 @@ command_t cmdlist[] = {
         "              [--stripe-index|-i] <start_ost_index>\n"
         "              [--stripe-size|-S] <stripe_size>\n"
         "              [--pool|-p] <pool_name>\n"
-        "              [--ost-list|-o] <ost_indices>\n"
+        "              [--ost|-o] <ost_indices>\n"
         "              [--block|-b]\n"
         "              [--non-block|-n]\n"
+        "              [--non-direct|-D]\n"
         "              <file|directory>\n"
         "\tstripe_count:     number of OSTs to stripe a file over\n"
         "\tstripe_ost_index: index of the first OST to stripe a file over\n"
         "\tstripe_size:      number of bytes to store before moving to the next OST\n"
         "\tpool_name:        name of the predefined pool of OSTs\n"
         "\tost_indices:      OSTs to stripe over, in order\n"
-        "\tblock:            wait for the operation to return before continuing\n"
-        "\tnon-block:        do not wait for the operation to return.\n"},
+        "\tblock:        Block file access during data migration (default)\n"
+        "\tnon-block:    Abort migrations if concurrent access is detected\n"
+        "\tnon-direct:       do not use direct I/O to copy file contents.\n"},
        {"mv", lfs_mv, 0,
         "To move directories between MDTs. This command is deprecated, "
         "use \"migrate\" instead.\n"
-        "usage: mv <directory|filename> [--mdt-index|-M] <mdt_index> "
+        "usage: mv <directory|filename> [--mdt-index|-m] <mdt_index> "
         "[--verbose|-v]\n"},
        {"ladvise", lfs_ladvise, 0,
         "Provide servers with advice about access patterns for a file.\n"
@@ -406,6 +585,30 @@ command_t cmdlist[] = {
         "               {[--end|-e END[kMGT]] | [--length|-l LENGTH[kMGT]]}\n"
         "               {[--mode|-m [READ,WRITE]}\n"
         "               <file> ...\n"},
+       {"mirror", lfs_mirror, mirror_cmdlist,
+        "lfs commands used to manage files with mirrored components:\n"
+        "lfs mirror create - create a mirrored file or directory\n"
+        "lfs mirror extend - add mirror(s) to an existing file\n"
+        "lfs mirror split  - split a mirror from an existing mirrored file\n"
+        "lfs mirror resync - resynchronize out-of-sync mirrored file(s)\n"
+        "lfs mirror read   - read a mirror content of a mirrored file\n"
+        "lfs mirror write  - write to a mirror of a mirrored file\n"
+        "lfs mirror copy   - copy a mirror to other mirror(s) of a file\n"
+        "lfs mirror verify - verify mirrored file(s)\n"},
+       {"getsom", lfs_getsom, 0, "To list the SOM info for a given file.\n"
+        "usage: getsom [-s] [-b] [-f] <path>\n"
+        "\t-s: Only show the size value of the SOM data for a given file\n"
+        "\t-b: Only show the blocks value of the SOM data for a given file\n"
+        "\t-f: Only show the flags value of the SOM data for a given file\n"},
+       {"heat_get", lfs_heat_get, 0,
+        "To get heat of files.\n"
+        "usage: heat_get <file> ...\n"},
+       {"heat_set", lfs_heat_set, 0,
+        "To set heat flags of files.\n"
+        "usage: heat_set [--clear|-c] [--off|-o] [--on|-O] <file> ...\n"
+        "\t--clear|-c: Clear file heat for given files\n"
+        "\t--off|-o:   Turn off file heat for given files\n"
+        "\t--on|-O:    Turn on file heat for given files\n"},
        {"help", Parser_help, 0, "help"},
        {"exit", Parser_quit, 0, "quit"},
        {"quit", Parser_quit, 0, "quit"},
@@ -417,8 +620,6 @@ command_t cmdlist[] = {
 };
 
 
-#define MIGRATION_NONBLOCK     1
-
 static int check_hashtype(const char *hashtype)
 {
        int i;
@@ -430,47 +631,155 @@ static int check_hashtype(const char *hashtype)
        return 0;
 }
 
-/**
- * Internal helper for migrate_copy_data(). Check lease and report error if
- * need be.
- *
- * \param[in]  fd           File descriptor on which to check the lease.
- * \param[out] lease_broken Set to true if the lease was broken.
- * \param[in]  group_locked Whether a group lock was taken or not.
- * \param[in]  path         Name of the file being processed, for error
- *                         reporting
- *
- * \retval 0       Migration can keep on going.
- * \retval -errno  Error occurred, abort migration.
- */
-static int check_lease(int fd, bool *lease_broken, bool group_locked,
-                      const char *path)
+
+static const char *error_loc = "syserror";
+
+enum {
+       MIGRATION_NONBLOCK      = 0x0001,
+       MIGRATION_MIRROR        = 0x0002,
+       MIGRATION_NONDIRECT     = 0x0004,
+       MIGRATION_VERBOSE       = 0x0008,
+};
+
+static int lfs_component_create(char *fname, int open_flags, mode_t open_mode,
+                               struct llapi_layout *layout);
+
+static int
+migrate_open_files(const char *name, __u64 migration_flags,
+                  const struct llapi_stripe_param *param,
+                  struct llapi_layout *layout, int *fd_src, int *fd_tgt)
 {
-       int rc;
+       int                      fd = -1;
+       int                      fdv = -1;
+       int                      rflags;
+       int                      mdt_index;
+       int                      random_value;
+       char                     parent[PATH_MAX];
+       char                     volatile_file[PATH_MAX];
+       char                    *ptr;
+       int                      rc;
+       struct stat              st;
+       struct stat              stv;
 
-       if (!file_lease_supported)
-               return 0;
+       if (param == NULL && layout == NULL) {
+               error_loc = "layout information";
+               return -EINVAL;
+       }
 
-       rc = llapi_lease_check(fd);
-       if (rc > 0)
-               return 0; /* llapi_check_lease returns > 0 on success. */
+       /* search for file directory pathname */
+       if (strlen(name) > sizeof(parent) - 1) {
+               error_loc = "source file name";
+               return -ERANGE;
+       }
 
-       if (!group_locked) {
-               fprintf(stderr, "%s: cannot migrate '%s': file busy\n",
-                       progname, path);
-               rc = rc ? rc : -EAGAIN;
+       strncpy(parent, name, sizeof(parent));
+       ptr = strrchr(parent, '/');
+       if (ptr == NULL) {
+               if (getcwd(parent, sizeof(parent)) == NULL) {
+                       error_loc = "getcwd";
+                       return -errno;
+               }
        } else {
-               fprintf(stderr, "%s: external attempt to access file '%s' "
-                       "blocked until migration ends.\n", progname, path);
-               rc = 0;
+               if (ptr == parent) /* leading '/' */
+                       ptr = parent + 1;
+               *ptr = '\0';
+       }
+
+       /* open file, direct io */
+       /* even if the file is only read, WR mode is nedeed to allow
+        * layout swap on fd */
+       rflags = O_RDWR;
+       if (!(migration_flags & MIGRATION_NONDIRECT))
+               rflags |= O_DIRECT;
+       fd = open(name, rflags);
+       if (fd < 0) {
+               rc = -errno;
+               error_loc = "cannot open source file";
+               return rc;
+       }
+
+       rc = llapi_file_fget_mdtidx(fd, &mdt_index);
+       if (rc < 0) {
+               error_loc = "cannot get MDT index";
+               goto out;
+       }
+
+       do {
+               int open_flags = O_WRONLY | O_CREAT | O_EXCL | O_NOFOLLOW;
+               mode_t open_mode = S_IRUSR | S_IWUSR;
+
+               random_value = random();
+               rc = snprintf(volatile_file, sizeof(volatile_file),
+                             "%s/%s:%.4X:%.4X", parent, LUSTRE_VOLATILE_HDR,
+                             mdt_index, random_value);
+               if (rc >= sizeof(volatile_file)) {
+                       rc = -ENAMETOOLONG;
+                       break;
+               }
+
+               /* create, open a volatile file, use caching (ie no directio) */
+               if (param != NULL)
+                       fdv = llapi_file_open_param(volatile_file, open_flags,
+                                                   open_mode, param);
+               else
+                       fdv = lfs_component_create(volatile_file, open_flags,
+                                                  open_mode, layout);
+       } while (fdv < 0 && (rc = fdv) == -EEXIST);
+
+       if (rc < 0) {
+               error_loc = "cannot create volatile file";
+               goto out;
+       }
+
+       /* In case the MDT does not support creation of volatile files
+        * we should try to unlink it. */
+       (void)unlink(volatile_file);
+
+       /* Not-owner (root?) special case.
+        * Need to set owner/group of volatile file like original.
+        * This will allow to pass related check during layout_swap.
+        */
+       rc = fstat(fd, &st);
+       if (rc != 0) {
+               rc = -errno;
+               error_loc = "cannot stat source file";
+               goto out;
+       }
+
+       rc = fstat(fdv, &stv);
+       if (rc != 0) {
+               rc = -errno;
+               error_loc = "cannot stat volatile";
+               goto out;
+       }
+
+       if (st.st_uid != stv.st_uid || st.st_gid != stv.st_gid) {
+               rc = fchown(fdv, st.st_uid, st.st_gid);
+               if (rc != 0) {
+                       rc = -errno;
+                       error_loc = "cannot change ownwership of volatile";
+                       goto out;
+               }
+       }
+
+out:
+       if (rc < 0) {
+               if (fd > 0)
+                       close(fd);
+               if (fdv > 0)
+                       close(fdv);
+       } else {
+               *fd_src = fd;
+               *fd_tgt = fdv;
+               error_loc = NULL;
        }
-       *lease_broken = true;
        return rc;
 }
 
-static int migrate_copy_data(int fd_src, int fd_dst, size_t buf_size,
-                            bool group_locked, const char *fname)
+static int migrate_copy_data(int fd_src, int fd_dst, int (*check_file)(int))
 {
+       struct llapi_layout *layout;
+       size_t   buf_size = 4 * 1024 * 1024;
        void    *buf = NULL;
        ssize_t  rsize = -1;
        ssize_t  wsize = 0;
@@ -478,7 +787,17 @@ static int migrate_copy_data(int fd_src, int fd_dst, size_t buf_size,
        size_t   wpos = 0;
        off_t    bufoff = 0;
        int      rc;
-       bool     lease_broken = false;
+
+       layout = llapi_layout_get_by_fd(fd_src, 0);
+       if (layout != NULL) {
+               uint64_t stripe_size;
+
+               rc = llapi_layout_stripe_size_get(layout, &stripe_size);
+               if (rc == 0)
+                       buf_size = stripe_size;
+
+               llapi_layout_free(layout);
+       }
 
        /* Use a page-aligned buffer for direct I/O */
        rc = posix_memalign(&buf, getpagesize(), buf_size);
@@ -489,18 +808,16 @@ static int migrate_copy_data(int fd_src, int fd_dst, size_t buf_size,
                /* read new data only if we have written all
                 * previously read data */
                if (wpos == rpos) {
-                       if (!lease_broken) {
-                               rc = check_lease(fd_src, &lease_broken,
-                                                group_locked, fname);
+                       if (check_file) {
+                               rc = check_file(fd_src);
                                if (rc < 0)
-                                       goto out;
+                                       break;
                        }
+
                        rsize = read(fd_src, buf, buf_size);
                        if (rsize < 0) {
                                rc = -errno;
-                               fprintf(stderr, "%s: %s: read failed: %s\n",
-                                       progname, fname, strerror(-rc));
-                               goto out;
+                               break;
                        }
                        rpos += rsize;
                        bufoff = 0;
@@ -512,39 +829,39 @@ static int migrate_copy_data(int fd_src, int fd_dst, size_t buf_size,
                wsize = write(fd_dst, buf + bufoff, rpos - wpos);
                if (wsize < 0) {
                        rc = -errno;
-                       fprintf(stderr,
-                               "%s: %s: write failed on volatile: %s\n",
-                               progname, fname, strerror(-rc));
-                       goto out;
+                       break;
                }
                wpos += wsize;
                bufoff += wsize;
        }
 
-       rc = fsync(fd_dst);
-       if (rc < 0) {
-               rc = -errno;
-               fprintf(stderr, "%s: %s: fsync failed: %s\n",
-                       progname, fname, strerror(-rc));
+       if (rc == 0) {
+               rc = fsync(fd_dst);
+               if (rc < 0)
+                       rc = -errno;
        }
 
-out:
        free(buf);
        return rc;
 }
 
-static int migrate_copy_timestamps(int fdv, const struct stat *st)
+static int migrate_copy_timestamps(int fd, int fdv)
 {
-       struct timeval  tv[2] = {
-               {.tv_sec = st->st_atime},
-               {.tv_sec = st->st_mtime}
-       };
+       struct stat st;
+
+       if (fstat(fd, &st) == 0) {
+               struct timeval tv[2] = {
+                       {.tv_sec = st.st_atime},
+                       {.tv_sec = st.st_mtime}
+               };
+
+               return futimes(fdv, tv);
+       }
 
-       return futimes(fdv, tv);
+       return -errno;
 }
 
-static int migrate_block(int fd, int fdv, const struct stat *st,
-                        size_t buf_size, const char *name)
+static int migrate_block(int fd, int fdv)
 {
        __u64   dv1;
        int     gid;
@@ -553,8 +870,7 @@ static int migrate_block(int fd, int fdv, const struct stat *st,
 
        rc = llapi_get_data_version(fd, &dv1, LL_DV_RD_FLUSH);
        if (rc < 0) {
-               fprintf(stderr, "%s: %s: cannot get dataversion: %s\n",
-                       progname, name, strerror(-rc));
+               error_loc = "cannot get dataversion";
                return rc;
        }
 
@@ -567,22 +883,20 @@ static int migrate_block(int fd, int fdv, const struct stat *st,
         * block it too. */
        rc = llapi_group_lock(fd, gid);
        if (rc < 0) {
-               fprintf(stderr, "%s: %s: cannot get group lock: %s\n",
-                       progname, name, strerror(-rc));
+               error_loc = "cannot get group lock";
                return rc;
        }
 
-       rc = migrate_copy_data(fd, fdv, buf_size, true, name);
+       rc = migrate_copy_data(fd, fdv, NULL);
        if (rc < 0) {
-               fprintf(stderr, "%s: %s: data copy failed\n", progname, name);
+               error_loc = "data copy failed";
                goto out_unlock;
        }
 
        /* Make sure we keep original atime/mtime values */
-       rc = migrate_copy_timestamps(fdv, st);
+       rc = migrate_copy_timestamps(fd, fdv);
        if (rc < 0) {
-               fprintf(stderr, "%s: %s: timestamp copy failed\n",
-                       progname, name);
+               error_loc = "timestamp copy failed";
                goto out_unlock;
        }
 
@@ -594,28 +908,44 @@ static int migrate_block(int fd, int fdv, const struct stat *st,
        rc = llapi_fswap_layouts_grouplock(fd, fdv, dv1, 0, 0,
                                           SWAP_LAYOUTS_CHECK_DV1);
        if (rc == -EAGAIN) {
-               fprintf(stderr, "%s: %s: dataversion changed during copy, "
-                       "migration aborted\n", progname, name);
+               error_loc = "file changed";
                goto out_unlock;
        } else if (rc < 0) {
-               fprintf(stderr, "%s: %s: cannot swap layouts: %s\n", progname,
-                       name, strerror(-rc));
+               error_loc = "cannot swap layout";
                goto out_unlock;
        }
 
 out_unlock:
        rc2 = llapi_group_unlock(fd, gid);
        if (rc2 < 0 && rc == 0) {
-               fprintf(stderr, "%s: %s: putting group lock failed: %s\n",
-                       progname, name, strerror(-rc2));
+               error_loc = "unlock group lock";
                rc = rc2;
        }
 
        return rc;
 }
 
-static int migrate_nonblock(int fd, int fdv, const struct stat *st,
-                           size_t buf_size, const char *name)
+/**
+ * Internal helper for migrate_copy_data(). Check lease and report error if
+ * need be.
+ *
+ * \param[in]  fd           File descriptor on which to check the lease.
+ *
+ * \retval 0       Migration can keep on going.
+ * \retval -errno  Error occurred, abort migration.
+ */
+static int check_lease(int fd)
+{
+       int rc;
+
+       rc = llapi_lease_check(fd);
+       if (rc > 0)
+               return 0; /* llapi_check_lease returns > 0 on success. */
+
+       return -EBUSY;
+}
+
+static int migrate_nonblock(int fd, int fdv)
 {
        __u64   dv1;
        __u64   dv2;
@@ -623,80 +953,100 @@ static int migrate_nonblock(int fd, int fdv, const struct stat *st,
 
        rc = llapi_get_data_version(fd, &dv1, LL_DV_RD_FLUSH);
        if (rc < 0) {
-               fprintf(stderr, "%s: %s: cannot get data version: %s\n",
-                       progname, name, strerror(-rc));
+               error_loc = "cannot get data version";
                return rc;
        }
 
-       rc = migrate_copy_data(fd, fdv, buf_size, false, name);
+       rc = migrate_copy_data(fd, fdv, check_lease);
        if (rc < 0) {
-               fprintf(stderr, "%s: %s: data copy failed\n", progname, name);
+               error_loc = "data copy failed";
                return rc;
        }
 
        rc = llapi_get_data_version(fd, &dv2, LL_DV_RD_FLUSH);
        if (rc != 0) {
-               fprintf(stderr, "%s: %s: cannot get data version: %s\n",
-                       progname, name, strerror(-rc));
+               error_loc = "cannot get data version";
                return rc;
        }
 
        if (dv1 != dv2) {
                rc = -EAGAIN;
-               fprintf(stderr, "%s: %s: data version changed during "
-                               "migration\n",
-                       progname, name);
+               error_loc = "source file changed";
                return rc;
        }
 
        /* Make sure we keep original atime/mtime values */
-       rc = migrate_copy_timestamps(fdv, st);
-       if (rc < 0) {
-               fprintf(stderr, "%s: %s: timestamp copy failed\n",
-                       progname, name);
-               return rc;
-       }
-
-       /* Atomically put lease, swap layouts and close.
-        * for a migration we need to check data version on file did
-        * not change. */
-       rc = llapi_fswap_layouts(fd, fdv, 0, 0, SWAP_LAYOUTS_CLOSE);
+       rc = migrate_copy_timestamps(fd, fdv);
        if (rc < 0) {
-               fprintf(stderr, "%s: %s: cannot swap layouts: %s\n",
-                       progname, name, strerror(-rc));
+               error_loc = "timestamp copy failed";
                return rc;
        }
 
        return 0;
 }
 
-static int lfs_component_set(char *fname, int comp_id, __u32 flags)
+static int lfs_component_set(char *fname, int comp_id,
+                            __u32 flags, __u32 neg_flags)
 {
-       return -ENOTSUP;
+       __u32 ids[2];
+       __u32 flags_array[2];
+       size_t count = 0;
+       int rc;
+
+       if (flags) {
+               ids[count] = comp_id;
+               flags_array[count] = flags;
+               ++count;
+       }
+
+       if (neg_flags) {
+               ids[count] = comp_id;
+               flags_array[count] = neg_flags | LCME_FL_NEG;
+               ++count;
+       }
+
+       rc = llapi_layout_file_comp_set(fname, ids, flags_array, count);
+       if (rc)
+               fprintf(stderr,
+                       "%s: cannot change the flags of component '%#x' of file '%s': %x / ^(%x)\n",
+                       progname, comp_id, fname, flags, neg_flags);
+
+       return rc;
 }
 
-static int lfs_component_del(char *fname, __u32 comp_id, __u32 flags)
+static int lfs_component_del(char *fname, __u32 comp_id,
+                            __u32 flags, __u32 neg_flags)
 {
        int     rc = 0;
 
-       if (flags != 0 && comp_id != 0)
+       if (flags && neg_flags)
+               return -EINVAL;
+
+       if (!flags && neg_flags)
+               flags = neg_flags | LCME_FL_NEG;
+
+       if ((flags && comp_id) || (!flags && !comp_id))
                return -EINVAL;
 
        /* LCME_FL_INIT is the only supported flag in PFL */
-       if (flags != 0) {
+       if (flags) {
                if (flags & ~LCME_KNOWN_FLAGS) {
-                       fprintf(stderr, "Invalid component flags %#x\n", flags);
+                       fprintf(stderr,
+                               "%s setstripe: unknown flags %#x\n",
+                               progname, flags);
                        return -EINVAL;
                }
        } else if (comp_id > LCME_ID_MAX) {
-               fprintf(stderr, "Invalid component id %u\n", comp_id);
+               fprintf(stderr, "%s setstripe: invalid component id %u\n",
+                       progname, comp_id);
                return -EINVAL;
        }
 
        rc = llapi_layout_file_comp_del(fname, comp_id, flags);
        if (rc)
-               fprintf(stderr, "Delete component %#x from %s failed. %s\n",
-                       comp_id, fname, strerror(errno));
+               fprintf(stderr,
+                       "%s setstripe: cannot delete component %#x from '%s': %s\n",
+                       progname, comp_id, fname, strerror(errno));
        return rc;
 }
 
@@ -729,10 +1079,10 @@ static int lfs_component_create(char *fname, int open_flags, mode_t open_mode,
 
        fd = llapi_layout_file_open(fname, open_flags, open_mode, layout);
        if (fd < 0)
-               fprintf(stderr, "%s %s failed. %s\n",
+               fprintf(stderr, "%s: cannot %s '%s': %s\n", progname,
                        S_ISDIR(st.st_mode) ?
-                               "Set default composite layout to " :
-                               "Create composite file",
+                               "set default composite layout for" :
+                               "create composite file",
                        fname, strerror(errno));
        return fd;
 }
@@ -741,4792 +1091,8872 @@ static int lfs_migrate(char *name, __u64 migration_flags,
                       struct llapi_stripe_param *param,
                       struct llapi_layout *layout)
 {
-       int                      fd = -1;
-       int                      fdv = -1;
-       char                     parent[PATH_MAX];
-       int                      mdt_index;
-       int                      random_value;
-       char                     volatile_file[sizeof(parent) +
-                                              LUSTRE_VOLATILE_HDR_LEN +
-                                              2 * sizeof(mdt_index) +
-                                              2 * sizeof(random_value) + 4];
-       char                    *ptr;
-       int                      rc;
-       struct lov_user_md      *lum = NULL;
-       int                      lum_size;
-       int                      buf_size = 1024 * 1024 * 4;
-       bool                     have_lease_rdlck = false;
-       struct stat              st;
-       struct stat              stv;
+       int fd = -1;
+       int fdv = -1;
+       int rc;
 
-       /* find the right size for the IO and allocate the buffer */
-       lum_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
-       lum = malloc(lum_size);
-       if (lum == NULL) {
-               rc = -ENOMEM;
-               goto free;
-       }
+       rc = migrate_open_files(name, migration_flags, param, layout,
+                               &fd, &fdv);
+       if (rc < 0)
+               goto out;
 
-       rc = llapi_file_get_stripe(name, lum);
-       /* failure can happen for many reasons and some may be not real errors
-        * (eg: no stripe)
-        * in case of a real error, a later call will fail with better
-        * error management */
-       if (rc == 0) {
-               if ((lum->lmm_magic == LOV_USER_MAGIC_V1 ||
-                    lum->lmm_magic == LOV_USER_MAGIC_V3) &&
-                   lum->lmm_stripe_size != 0)
-                       buf_size = lum->lmm_stripe_size;
+       if (!(migration_flags & MIGRATION_NONBLOCK)) {
+               /* Blocking mode (forced if servers do not support file lease).
+                * It is also the default mode, since we cannot distinguish
+                * between a broken lease and a server that does not support
+                * atomic swap/close (LU-6785) */
+               rc = migrate_block(fd, fdv);
+               goto out;
        }
 
-       /* open file, direct io */
-       /* even if the file is only read, WR mode is nedeed to allow
-        * layout swap on fd */
-       fd = open(name, O_RDWR | O_DIRECT);
-       if (fd == -1) {
-               rc = -errno;
-               fprintf(stderr, "%s: %s: cannot open: %s\n", progname, name,
-                       strerror(-rc));
-               goto free;
-       }
-
-       if (file_lease_supported) {
-               rc = llapi_lease_get(fd, LL_LEASE_RDLCK);
-               if (rc == -EOPNOTSUPP) {
-                       /* Older servers do not support file lease.
-                        * Disable related checks. This opens race conditions
-                        * as explained in LU-4840 */
-                       file_lease_supported = false;
-               } else if (rc < 0) {
-                       fprintf(stderr, "%s: %s: cannot get open lease: %s\n",
-                               progname, name, strerror(-rc));
-                       goto error;
-               } else {
-                       have_lease_rdlck = true;
-               }
+       rc = llapi_lease_acquire(fd, LL_LEASE_RDLCK);
+       if (rc < 0) {
+               error_loc = "cannot get lease";
+               goto out;
        }
 
-       /* search for file directory pathname */
-       if (strlen(name) > sizeof(parent)-1) {
-               rc = -E2BIG;
-               goto error;
-       }
-       strncpy(parent, name, sizeof(parent));
-       ptr = strrchr(parent, '/');
-       if (ptr == NULL) {
-               if (getcwd(parent, sizeof(parent)) == NULL) {
-                       rc = -errno;
-                       goto error;
-               }
-       } else {
-               if (ptr == parent)
-                       strcpy(parent, "/");
-               else
-                       *ptr = '\0';
+       rc = migrate_nonblock(fd, fdv);
+       if (rc < 0) {
+               llapi_lease_release(fd);
+               goto out;
        }
 
-       rc = llapi_file_fget_mdtidx(fd, &mdt_index);
+       /* Atomically put lease, swap layouts and close.
+        * for a migration we need to check data version on file did
+        * not change. */
+       rc = llapi_fswap_layouts(fd, fdv, 0, 0, SWAP_LAYOUTS_CLOSE);
        if (rc < 0) {
-               fprintf(stderr, "%s: %s: cannot get MDT index: %s\n",
-                       progname, name, strerror(-rc));
-               goto error;
+               error_loc = "cannot swap layout";
+               goto out;
        }
 
-       do {
-               int open_flags = O_WRONLY | O_CREAT | O_EXCL | O_NOFOLLOW;
-               mode_t open_mode = S_IRUSR | S_IWUSR;
+out:
+       if (fd >= 0)
+               close(fd);
 
-               random_value = random();
-               rc = snprintf(volatile_file, sizeof(volatile_file),
-                             "%s/%s:%.4X:%.4X", parent, LUSTRE_VOLATILE_HDR,
-                             mdt_index, random_value);
-               if (rc >= sizeof(volatile_file)) {
-                       rc = -E2BIG;
-                       goto error;
-               }
+       if (fdv >= 0)
+               close(fdv);
 
-               /* create, open a volatile file, use caching (ie no directio) */
-               if (param != NULL)
-                       fdv = llapi_file_open_param(volatile_file, open_flags,
-                                                   open_mode, param);
-               else if (layout != NULL)
-                       fdv = lfs_component_create(volatile_file, open_flags,
-                                                  open_mode, layout);
-               else
-                       fdv = -EINVAL;
-       } while (fdv == -EEXIST);
+       if (rc < 0)
+               fprintf(stderr, "error: %s: %s: %s: %s\n",
+                       progname, name, error_loc, strerror(-rc));
+       else if (migration_flags & MIGRATION_VERBOSE)
+               printf("%s\n", name);
 
-       if (fdv < 0) {
-               rc = fdv;
-               fprintf(stderr, "%s: %s: cannot create volatile file in"
-                               " directory: %s\n",
-                       progname, parent, strerror(-rc));
-               goto error;
-       }
+       return rc;
+}
 
-       /* In case the MDT does not support creation of volatile files
-        * we should try to unlink it. */
-       (void)unlink(volatile_file);
+static int comp_str2flags(char *string, __u32 *flags, __u32 *neg_flags)
+{
+       char *name;
 
-       /* Not-owner (root?) special case.
-        * Need to set owner/group of volatile file like original.
-        * This will allow to pass related check during layout_swap.
-        */
-       rc = fstat(fd, &st);
-       if (rc != 0) {
-               rc = -errno;
-               fprintf(stderr, "%s: %s: cannot stat: %s\n", progname, name,
-                       strerror(errno));
-               goto error;
-       }
-       rc = fstat(fdv, &stv);
-       if (rc != 0) {
-               rc = -errno;
-               fprintf(stderr, "%s: %s: cannot stat: %s\n", progname,
-                       volatile_file, strerror(errno));
-               goto error;
-       }
-       if (st.st_uid != stv.st_uid || st.st_gid != stv.st_gid) {
-               rc = fchown(fdv, st.st_uid, st.st_gid);
-               if (rc != 0) {
-                       rc = -errno;
-                       fprintf(stderr, "%s: %s: cannot chown: %s\n", progname,
-                               name, strerror(errno));
-                       goto error;
-               }
-       }
+       if (string == NULL)
+               return -EINVAL;
 
-       if (migration_flags & MIGRATION_NONBLOCK && file_lease_supported) {
-               rc = migrate_nonblock(fd, fdv, &st, buf_size, name);
-               if (rc == 0) {
-                       have_lease_rdlck = false;
-                       fdv = -1; /* The volatile file is closed as we put the
-                                  * lease in non-blocking mode. */
+       *flags = 0;
+       *neg_flags = 0;
+       for (name = strtok(string, ","); name; name = strtok(NULL, ",")) {
+               bool found = false;
+               int i;
+
+               for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
+                       __u32 comp_flag = comp_flags_table[i].cfn_flag;
+                       const char *comp_name = comp_flags_table[i].cfn_name;
+
+                       if (strcmp(name, comp_name) == 0) {
+                               *flags |= comp_flag;
+                               found = true;
+                       } else if (strncmp(name, "^", 1) == 0 &&
+                                  strcmp(name + 1, comp_name) == 0) {
+                               *neg_flags |= comp_flag;
+                               found = true;
+                       }
+               }
+               if (!found) {
+                       llapi_printf(LLAPI_MSG_ERROR,
+                                    "%s: component flag '%s' not supported\n",
+                                    progname, name);
+                       return -EINVAL;
                }
-       } else {
-               /* Blocking mode (forced if servers do not support file lease).
-                * It is also the default mode, since we cannot distinguish
-                * between a broken lease and a server that does not support
-                * atomic swap/close (LU-6785) */
-               rc = migrate_block(fd, fdv, &st, buf_size, name);
        }
 
-error:
-       if (have_lease_rdlck)
-               llapi_lease_put(fd);
+       if (!*flags && !*neg_flags)
+               return -EINVAL;
 
-       if (fd >= 0)
-               close(fd);
+       /* don't allow to set and exclude the same flag */
+       if (*flags & *neg_flags)
+               return -EINVAL;
 
-       if (fdv >= 0)
-               close(fdv);
+       return 0;
+}
+
+static int mirror_str2state(char *string, __u16 *state, __u16 *neg_state)
+{
+       if (string == NULL)
+               return -EINVAL;
 
-free:
-       if (lum)
-               free(lum);
+       *state = 0;
+       *neg_state = 0;
 
-       return rc;
+       if (strncmp(string, "^", 1) == 0) {
+               *neg_state = llapi_layout_string_flags(string + 1);
+               if (*neg_state != 0)
+                       return 0;
+       } else {
+               *state = llapi_layout_string_flags(string);
+               if (*state != 0)
+                       return 0;
+       }
+
+       llapi_printf(LLAPI_MSG_ERROR,
+                    "%s: mirrored file state '%s' not supported\n",
+                    progname, string);
+       return -EINVAL;
 }
 
 /**
- * Parse a string containing an OST index list into an array of integers.
- *
- * The input string contains a comma delimited list of individual
- * indices and ranges, for example "1,2-4,7". Add the indices into the
- * \a osts array and remove duplicates.
- *
- * \param[out] osts    array to store indices in
- * \param[in] size     size of \a osts array
- * \param[in] offset   starting index in \a osts
- * \param[in] arg      string containing OST index list
+ * struct mirror_args - Command-line arguments for mirror(s).
+ * @m_count:  Number of mirrors to be created with this layout.
+ * @m_flags:  Mirror level flags, only 'prefer' is supported.
+ * @m_layout: Mirror layout.
+ * @m_file:   A victim file. Its layout will be split and used as a mirror.
+ * @m_next:   Point to the next node of the list.
  *
- * \retval positive    number of indices in \a osts
- * \retval -EINVAL     unable to parse \a arg
+ * Command-line arguments for mirror(s) will be parsed and stored in
+ * a linked list that consists of this structure.
  */
-static int parse_targets(__u32 *osts, int size, int offset, char *arg)
+struct mirror_args {
+       __u32                   m_count;
+       __u32                   m_flags;
+       struct llapi_layout     *m_layout;
+       const char              *m_file;
+       struct mirror_args      *m_next;
+};
+
+static int mirror_sanity_check_flags(struct llapi_layout *layout, void *unused)
 {
+       uint32_t flags;
        int rc;
-       int nr = offset;
-       int slots = size - offset;
-       char *ptr = NULL;
-       bool end_of_loop;
 
-       if (arg == NULL)
+       rc = llapi_layout_comp_flags_get(layout, &flags);
+       if (rc)
+               return -errno;
+
+       if (flags & LCME_FL_NEG) {
+               fprintf(stderr, "error: %s: negative flags are not supported\n",
+                       progname);
                return -EINVAL;
+       }
 
-       end_of_loop = false;
-       while (!end_of_loop) {
-               int start_index;
-               int end_index;
-               int i;
-               char *endptr = NULL;
+       if (flags & LCME_FL_STALE) {
+               fprintf(stderr, "error: %s: setting '%s' is not supported\n",
+                       progname, comp_flags_table[LCME_FL_STALE].cfn_name);
+               return -EINVAL;
+       }
 
-               rc = -EINVAL;
+       return LLAPI_LAYOUT_ITER_CONT;
+}
 
-               ptr = strchrnul(arg, ',');
+static inline int mirror_sanity_check_one(struct llapi_layout *layout)
+{
+       uint64_t start, end;
+       uint64_t pattern;
+       int rc;
 
-               end_of_loop = *ptr == '\0';
-               *ptr = '\0';
+       /* LU-10112: do not support dom+flr in phase 1 */
+       rc = llapi_layout_comp_use(layout, LLAPI_LAYOUT_COMP_USE_FIRST);
+       if (rc)
+               return -errno;
 
-               start_index = strtol(arg, &endptr, 0);
-               if (endptr == arg) /* no data at all */
-                       break;
-               if (*endptr != '-' && *endptr != '\0') /* has invalid data */
-                       break;
-               if (start_index < 0)
-                       break;
+       rc = llapi_layout_pattern_get(layout, &pattern);
+       if (rc)
+               return -errno;
 
-               end_index = start_index;
-               if (*endptr == '-') {
-                       end_index = strtol(endptr + 1, &endptr, 0);
-                       if (*endptr != '\0')
-                               break;
-                       if (end_index < start_index)
-                               break;
-               }
+       if (pattern == LOV_PATTERN_MDT || pattern == LLAPI_LAYOUT_MDT) {
+               fprintf(stderr, "error: %s: doesn't support dom+flr for now\n",
+                       progname);
+               return -ENOTSUP;
+       }
 
-               for (i = start_index; i <= end_index && slots > 0; i++) {
-                       int j;
+       rc = llapi_layout_comp_use(layout, LLAPI_LAYOUT_COMP_USE_LAST);
+       if (rc)
+               return -errno;
 
-                       /* remove duplicate */
-                       for (j = 0; j < offset; j++) {
-                               if (osts[j] == i)
-                                       break;
-                       }
-                       if (j == offset) { /* no duplicate */
-                               osts[nr++] = i;
-                               --slots;
-                       }
-               }
-               if (slots == 0 && i < end_index)
-                       break;
+       rc = llapi_layout_comp_extent_get(layout, &start, &end);
+       if (rc)
+               return -errno;
 
-               *ptr = ',';
-               arg = ++ptr;
-               offset = nr;
-               rc = 0;
+       if (end != LUSTRE_EOF) {
+               fprintf(stderr, "error: %s: mirror layout doesn't reach eof\n",
+                       progname);
+               return -EINVAL;
        }
-       if (!end_of_loop && ptr != NULL)
-               *ptr = ',';
 
-       return rc < 0 ? rc : nr;
+       rc = llapi_layout_comp_iterate(layout, mirror_sanity_check_flags, NULL);
+       return rc;
 }
 
-struct lfs_setstripe_args {
-       unsigned long long       lsa_comp_end;
-       unsigned long long       lsa_stripe_size;
-       int                      lsa_stripe_count;
-       int                      lsa_stripe_off;
-       __u32                    lsa_comp_flags;
-       int                      lsa_nr_osts;
-       int                      lsa_pattern;
-       __u32                   *lsa_osts;
-       char                    *lsa_pool_name;
+/**
+ * enum mirror_flags - Flags for extending a mirrored file.
+ * @MF_NO_VERIFY: Indicates not to verify the mirror(s) from victim file(s)
+ *            in case the victim file(s) contains the same data as the
+ *            original mirrored file.
+ * @MF_DESTROY: Indicates to delete the mirror from the mirrored file.
+ * @MF_COMP_ID: specified component id instead of mirror id
+ *
+ * Flags for extending a mirrored file.
+ */
+enum mirror_flags {
+       MF_NO_VERIFY    = 0x1,
+       MF_DESTROY      = 0x2,
+       MF_COMP_ID      = 0x4,
 };
 
-static inline void setstripe_args_init(struct lfs_setstripe_args *lsa)
+/**
+ * mirror_create_sanity_check() - Check mirror list.
+ * @list:  A linked list that stores the mirror arguments.
+ *
+ * This function does a sanity check on @list for creating
+ * a mirrored file.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+static int mirror_create_sanity_check(const char *fname,
+                                     struct mirror_args *list)
 {
-       memset(lsa, 0, sizeof(*lsa));
-       lsa->lsa_stripe_off = -1;
-}
+       int rc = 0;
+       bool has_m_file = false;
+       bool has_m_layout = false;
 
-static inline bool setstripe_args_specified(struct lfs_setstripe_args *lsa)
-{
-       return (lsa->lsa_stripe_size != 0 || lsa->lsa_stripe_count != 0 ||
-               lsa->lsa_stripe_off != -1 || lsa->lsa_pool_name != NULL ||
-               lsa->lsa_comp_end != 0 || lsa->lsa_pattern != 0);
-}
+       if (list == NULL)
+               return -EINVAL;
 
-static int comp_args_to_layout(struct llapi_layout **composite,
-                              struct lfs_setstripe_args *lsa)
-{
-       struct llapi_layout *layout = *composite;
-       uint64_t prev_end = 0;
-       int i = 0, rc;
+       if (fname) {
+               struct llapi_layout *layout;
 
-       if (layout == NULL) {
-               layout = llapi_layout_alloc();
-               if (layout == NULL) {
-                       fprintf(stderr, "Alloc llapi_layout failed. %s\n",
-                               strerror(errno));
-                       return -ENOMEM;
+               layout = llapi_layout_get_by_path(fname, 0);
+               if (!layout) {
+                       fprintf(stderr,
+                               "error: %s: file '%s' couldn't get layout\n",
+                               progname, fname);
+                       return -ENODATA;
                }
-               *composite = layout;
-       } else {
-               uint64_t start;
 
-               /* Get current component extent, current component
-                * must be the tail component. */
-               rc = llapi_layout_comp_extent_get(layout, &start, &prev_end);
-               if (rc) {
-                       fprintf(stderr, "Get comp extent failed. %s\n",
-                               strerror(errno));
+               rc = mirror_sanity_check_one(layout);
+               llapi_layout_free(layout);
+
+               if (rc)
                        return rc;
+       }
+
+       while (list != NULL) {
+               if (list->m_file != NULL) {
+                       has_m_file = true;
+                       llapi_layout_free(list->m_layout);
+
+                       list->m_layout =
+                               llapi_layout_get_by_path(list->m_file, 0);
+                       if (list->m_layout == NULL) {
+                               fprintf(stderr,
+                                       "error: %s: file '%s' has no layout\n",
+                                       progname, list->m_file);
+                               return -ENODATA;
+                       }
+               } else {
+                       has_m_layout = true;
+                       if (list->m_layout == NULL) {
+                               fprintf(stderr, "error: %s: no mirror layout\n",
+                                       progname);
+                               return -EINVAL;
+                       }
                }
 
-               rc = llapi_layout_comp_add(layout);
-               if (rc) {
-                       fprintf(stderr, "Add component failed. %s\n",
-                               strerror(errno));
+               rc = mirror_sanity_check_one(list->m_layout);
+               if (rc)
                        return rc;
-               }
+
+               list = list->m_next;
        }
 
-       rc = llapi_layout_comp_extent_set(layout, prev_end, lsa->lsa_comp_end);
-       if (rc) {
-               fprintf(stderr, "Set extent [%lu, %llu) failed. %s\n",
-                       prev_end, lsa->lsa_comp_end, strerror(errno));
+       if (has_m_file && has_m_layout) {
+               fprintf(stderr,
+                       "error: %s: -f <victim_file> option should not be specified with setstripe options\n",
+                       progname);
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int mirror_set_flags(struct llapi_layout *layout, void *cbdata)
+{
+       __u32 mirror_flags = *(__u32 *)cbdata;
+       uint32_t flags;
+       int rc;
+
+       rc = llapi_layout_comp_flags_get(layout, &flags);
+       if (rc < 0)
                return rc;
+
+       if (!flags) {
+               rc = llapi_layout_comp_flags_set(layout, mirror_flags);
+               if (rc)
+                       return rc;
        }
 
-       /* Data-on-MDT component setting */
-       if (lsa->lsa_pattern == LLAPI_LAYOUT_MDT) {
-               /* In case of Data-on-MDT patterns the only extra option
-                * applicable is stripe size option. */
-               if (lsa->lsa_stripe_count) {
-                       fprintf(stderr, "Option 'stripe-count' can't be "
-                               "specified with Data-on-MDT component: %i\n",
-                               lsa->lsa_stripe_count);
-                       return -EINVAL;
-               }
-               if (lsa->lsa_stripe_size) {
-                       fprintf(stderr, "Option 'stripe-size' can't be "
-                               "specified with Data-on-MDT component: %llu\n",
-                               lsa->lsa_stripe_size);
-                       return -EINVAL;
-               }
-               if (lsa->lsa_nr_osts != 0) {
-                       fprintf(stderr, "Option 'ost-list' can't be specified "
-                               "with Data-on-MDT component: '%i'\n",
-                               lsa->lsa_nr_osts);
-                       return -EINVAL;
-               }
-               if (lsa->lsa_stripe_off != -1) {
-                       fprintf(stderr, "Option 'stripe-offset' can't be "
-                               "specified with Data-on-MDT component: %i\n",
-                               lsa->lsa_stripe_off);
-                       return -EINVAL;
-               }
-               if (lsa->lsa_pool_name != 0) {
-                       fprintf(stderr, "Option 'pool' can't be specified "
-                               "with Data-on-MDT component: '%s'\n",
-                               lsa->lsa_pool_name);
-                       return -EINVAL;
-               }
+       return LLAPI_LAYOUT_ITER_CONT;
+}
 
-               rc = llapi_layout_pattern_set(layout, lsa->lsa_pattern);
+/**
+ * mirror_create() - Create a mirrored file.
+ * @fname:        The file to be created.
+ * @mirror_list:  A linked list that stores the mirror arguments.
+ *
+ * This function creates a mirrored file @fname with the mirror(s)
+ * from @mirror_list.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+static int mirror_create(char *fname, struct mirror_args *mirror_list)
+{
+       struct llapi_layout *layout = NULL;
+       struct mirror_args *cur_mirror = NULL;
+       uint16_t mirror_count = 0;
+       int i = 0;
+       int rc = 0;
+
+       rc = mirror_create_sanity_check(NULL, mirror_list);
+       if (rc)
+               return rc;
+
+       cur_mirror = mirror_list;
+       while (cur_mirror != NULL) {
+               rc = llapi_layout_comp_iterate(cur_mirror->m_layout,
+                                              mirror_set_flags,
+                                              &cur_mirror->m_flags);
                if (rc) {
-                       fprintf(stderr, "Set stripe pattern %#x failed. %s\n",
-                               lsa->lsa_pattern, strerror(errno));
-                       return rc;
+                       rc = -errno;
+                       fprintf(stderr, "%s: failed to set mirror flags\n",
+                               progname);
+                       goto error;
                }
-               /* Data-on-MDT component has always single stripe up to end */
-               lsa->lsa_stripe_size = lsa->lsa_comp_end;
-       }
 
-       if (lsa->lsa_stripe_size != 0) {
-               rc = llapi_layout_stripe_size_set(layout,
-                                                 lsa->lsa_stripe_size);
-               if (rc) {
-                       fprintf(stderr, "Set stripe size %llu failed. %s\n",
-                               lsa->lsa_stripe_size, strerror(errno));
-                       return rc;
+               for (i = 0; i < cur_mirror->m_count; i++) {
+                       rc = llapi_layout_merge(&layout, cur_mirror->m_layout);
+                       if (rc) {
+                               rc = -errno;
+                               fprintf(stderr, "error: %s: "
+                                       "merge layout failed: %s\n",
+                                       progname, strerror(errno));
+                               goto error;
+                       }
                }
+               mirror_count += cur_mirror->m_count;
+               cur_mirror = cur_mirror->m_next;
        }
 
-       if (lsa->lsa_stripe_count != 0) {
-               rc = llapi_layout_stripe_count_set(layout,
-                                                  lsa->lsa_stripe_count == -1 ?
-                                                  LLAPI_LAYOUT_WIDE :
-                                                  lsa->lsa_stripe_count);
-               if (rc) {
-                       fprintf(stderr, "Set stripe count %d failed. %s\n",
-                               lsa->lsa_stripe_count, strerror(errno));
-                       return rc;
-               }
+       if (layout == NULL) {
+               fprintf(stderr, "error: %s: layout is NULL\n", progname);
+               return -EINVAL;
        }
 
-       if (lsa->lsa_pool_name != NULL) {
-               rc = llapi_layout_pool_name_set(layout, lsa->lsa_pool_name);
-               if (rc) {
-                       fprintf(stderr, "Set pool name: %s failed. %s\n",
-                               lsa->lsa_pool_name, strerror(errno));
-                       return rc;
-               }
+       rc = llapi_layout_mirror_count_set(layout, mirror_count);
+       if (rc) {
+               rc = -errno;
+               fprintf(stderr, "error: %s: set mirror count failed: %s\n",
+                       progname, strerror(errno));
+               goto error;
        }
 
-       if (lsa->lsa_nr_osts > 0) {
-               if (lsa->lsa_stripe_count > 0 &&
-                   lsa->lsa_nr_osts != lsa->lsa_stripe_count) {
-                       fprintf(stderr, "stripe_count(%d) != nr_osts(%d)\n",
-                               lsa->lsa_stripe_count, lsa->lsa_nr_osts);
-                       return -EINVAL;
-               }
-               for (i = 0; i < lsa->lsa_nr_osts; i++) {
-                       rc = llapi_layout_ost_index_set(layout, i,
-                                                       lsa->lsa_osts[i]);
-                       if (rc)
-                               break;
-               }
-       } else if (lsa->lsa_stripe_off != -1) {
-               rc = llapi_layout_ost_index_set(layout, 0, lsa->lsa_stripe_off);
+       rc = lfs_component_create(fname, O_CREAT | O_WRONLY, 0666,
+                                 layout);
+       if (rc >= 0) {
+               close(rc);
+               rc = 0;
        }
-       if (rc) {
-               fprintf(stderr, "Set ost index %d failed. %s\n",
-                       i, strerror(errno));
-               return rc;
+
+error:
+       llapi_layout_free(layout);
+       return rc;
+}
+
+/**
+ * Compare files and check lease on @fd.
+ *
+ * \retval bytes number of bytes are the same
+ */
+static ssize_t mirror_file_compare(int fd, int fdv)
+{
+       const size_t buflen = 4 * 1024 * 1024; /* 4M */
+       void *buf;
+       ssize_t bytes_done = 0;
+       ssize_t bytes_read = 0;
+
+       buf = malloc(buflen * 2);
+       if (!buf)
+               return -ENOMEM;
+
+       while (1) {
+               if (!llapi_lease_check(fd)) {
+                       bytes_done = -EBUSY;
+                       break;
+               }
+
+               bytes_read = read(fd, buf, buflen);
+               if (bytes_read <= 0)
+                       break;
+
+               if (bytes_read != read(fdv, buf + buflen, buflen))
+                       break;
+
+               /* XXX: should compute the checksum on each buffer and then
+                * compare checksum to avoid cache collision */
+               if (memcmp(buf, buf + buflen, bytes_read))
+                       break;
+
+               bytes_done += bytes_read;
        }
 
-       return 0;
+       free(buf);
+
+       return bytes_done;
 }
 
-/* In 'lfs setstripe --component-add' mode, we need to fetch the extent
- * end of the last component in the existing file, and adjust the
- * first extent start of the components to be added accordingly. */
-static int adjust_first_extent(char *fname, struct llapi_layout *layout)
+static int mirror_extend_file(const char *fname, const char *victim_file,
+                             enum mirror_flags mirror_flags)
 {
-       struct llapi_layout *head;
-       uint64_t start, end, stripe_size, prev_end = 0;
+       int fd = -1;
+       int fdv = -1;
+       struct stat stbuf;
+       struct stat stbuf_v;
+       struct ll_ioc_lease *data = NULL;
        int rc;
 
-       if (layout == NULL)
-               return -EINVAL;
+       fd = open(fname, O_RDWR);
+       if (fd < 0) {
+               error_loc = "open source file";
+               rc = -errno;
+               goto out;
+       }
 
-       errno = 0;
-       head = llapi_layout_get_by_path(fname, 0);
-       if (head == NULL) {
-               fprintf(stderr, "Read layout from %s failed. %s\n",
-                       fname, strerror(errno));
-               return -EINVAL;
-       } else if (errno == ENODATA) {
-               /* file without LOVEA, this component-add will be turned
-                * into a component-create. */
-               llapi_layout_free(head);
-               return -ENODATA;
-       } else if (!llapi_layout_is_composite(head)) {
-               fprintf(stderr, "'%s' isn't a composite file.\n",
-                       fname);
-               llapi_layout_free(head);
-               return -EINVAL;
+       fdv = open(victim_file, O_RDWR);
+       if (fdv < 0) {
+               error_loc = "open target file";
+               rc = -errno;
+               goto out;
        }
 
-       rc = llapi_layout_comp_extent_get(head, &start, &prev_end);
-       if (rc) {
-               fprintf(stderr, "Get prev extent failed. %s\n",
-                       strerror(errno));
-               llapi_layout_free(head);
-               return rc;
+       if (fstat(fd, &stbuf) || fstat(fdv, &stbuf_v)) {
+               error_loc = "stat source or target file";
+               rc = -errno;
+               goto out;
        }
 
-       llapi_layout_free(head);
+       if (stbuf.st_dev != stbuf_v.st_dev) {
+               error_loc = "stat source and target file";
+               rc = -EXDEV;
+               goto out;
+       }
 
-       /* Make sure we use the first component of the layout to be added. */
-       rc = llapi_layout_comp_use(layout, LLAPI_LAYOUT_COMP_USE_FIRST);
+       /* mirrors should be of the same size */
+       if (stbuf.st_size != stbuf_v.st_size) {
+               error_loc = "file sizes don't match";
+               rc = -EINVAL;
+               goto out;
+       }
+
+       rc = llapi_lease_acquire(fd, LL_LEASE_RDLCK);
        if (rc < 0) {
-               fprintf(stderr, "Move component cursor failed. %s\n",
-                       strerror(errno));
-               return rc;
+               error_loc = "cannot get lease";
+               goto out;
        }
 
-       rc = llapi_layout_comp_extent_get(layout, &start, &end);
-       if (rc) {
-               fprintf(stderr, "Get extent failed. %s\n", strerror(errno));
-               return rc;
+       if (!(mirror_flags & MF_NO_VERIFY)) {
+               ssize_t ret;
+               /* mirrors should have the same contents */
+               ret = mirror_file_compare(fd, fdv);
+               if (ret != stbuf.st_size) {
+                       error_loc = "file busy or contents don't match";
+                       rc = ret < 0 ? ret : -EINVAL;
+                       goto out;
+               }
        }
 
-       if (start > prev_end || end <= prev_end) {
-               fprintf(stderr, "First extent to be set [%lu, %lu) isn't "
-                       "adjacent with the existing file extent end: %lu\n",
-                       start, end, prev_end);
-               return -EINVAL;
+       /* Get rid of caching pages from clients */
+       rc = llapi_file_flush(fd);
+       if (rc < 0) {
+               error_loc = "cannot get data version";
+               goto out;
        }
 
-       rc = llapi_layout_stripe_size_get(layout, &stripe_size);
-       if (rc) {
-               fprintf(stderr, "Get stripe size failed. %s\n",
-                       strerror(errno));
-               return rc;
+       rc = llapi_file_flush(fdv);
+       if (rc < 0) {
+               error_loc = "cannot get data version";
+               goto out;
+
        }
 
-       if (stripe_size != LLAPI_LAYOUT_DEFAULT &&
-           (prev_end & (stripe_size - 1))) {
-               fprintf(stderr, "Stripe size %lu not aligned with %lu\n",
-                       stripe_size, prev_end);
-               return -EINVAL;
+       /* Make sure we keep original atime/mtime values */
+       rc = migrate_copy_timestamps(fd, fdv);
+       if (rc < 0) {
+               error_loc = "cannot copy timestamp";
+               goto out;
        }
 
-       rc = llapi_layout_comp_extent_set(layout, prev_end, end);
-       if (rc) {
-               fprintf(stderr, "Set component extent [%lu, %lu) failed. %s\n",
-                       prev_end, end, strerror(errno));
-               return rc;
+       /* Atomically put lease, merge layouts and close. */
+       data = calloc(1, offsetof(typeof(*data), lil_ids[1]));
+       if (!data) {
+               error_loc = "memory allocation";
+               goto out;
        }
+       data->lil_mode = LL_LEASE_UNLCK;
+       data->lil_flags = LL_LEASE_LAYOUT_MERGE;
+       data->lil_count = 1;
+       data->lil_ids[0] = fdv;
+       rc = llapi_lease_set(fd, data);
+       if (rc < 0) {
+               error_loc = "cannot merge layout";
+               goto out;
+       } else if (rc == 0) {
+               rc = -EBUSY;
+               error_loc = "lost lease lock";
+               goto out;
+       }
+       rc = 0;
 
-       return 0;
+out:
+       if (data)
+               free(data);
+       if (fd >= 0)
+               close(fd);
+       if (fdv >= 0)
+               close(fdv);
+       if (!rc)
+               (void) unlink(victim_file);
+       if (rc < 0)
+               fprintf(stderr, "error: %s: %s: %s: %s\n",
+                       progname, fname, error_loc, strerror(-rc));
+       return rc;
 }
 
-static inline bool comp_flags_is_neg(__u32 flags)
+static int mirror_extend_layout(char *name, struct llapi_layout *layout)
 {
-       return flags & LCME_FL_NEG;
-}
+       struct ll_ioc_lease *data = NULL;
+       int fd = -1;
+       int fdv = -1;
+       int rc;
 
-static inline void comp_flags_set_neg(__u32 *flags)
-{
-       *flags |= LCME_FL_NEG;
-}
+       rc = migrate_open_files(name, 0, NULL, layout, &fd, &fdv);
+       if (rc < 0)
+               goto out;
 
-static inline void comp_flags_clear_neg(__u32 *flags)
-{
-       *flags &= ~LCME_FL_NEG;
+       rc = llapi_lease_acquire(fd, LL_LEASE_RDLCK);
+       if (rc < 0) {
+               error_loc = "cannot get lease";
+               goto out;
+       }
+
+       rc = migrate_nonblock(fd, fdv);
+       if (rc < 0) {
+               llapi_lease_release(fd);
+               goto out;
+       }
+
+       /* Atomically put lease, merge layouts and close. */
+       data = calloc(1, offsetof(typeof(*data), lil_ids[1]));
+       if (!data) {
+               error_loc = "memory allocation";
+               goto out;
+       }
+       data->lil_mode = LL_LEASE_UNLCK;
+       data->lil_flags = LL_LEASE_LAYOUT_MERGE;
+       data->lil_count = 1;
+       data->lil_ids[0] = fdv;
+       rc = llapi_lease_set(fd, data);
+       if (rc < 0) {
+               error_loc = "cannot merge layout";
+               goto out;
+       } else if (rc == 0) {
+               rc = -EBUSY;
+               error_loc = "lost lease lock";
+               goto out;
+       }
+       rc = 0;
+
+out:
+       if (data)
+               free(data);
+       if (fd >= 0)
+               close(fd);
+       if (fdv >= 0)
+               close(fdv);
+       if (rc < 0)
+               fprintf(stderr, "error: %s: %s: %s: %s\n",
+                       progname, name, error_loc, strerror(-rc));
+       return rc;
 }
 
-static int comp_str2flags(__u32 *flags, char *string)
+static int mirror_extend(char *fname, struct mirror_args *mirror_list,
+                        enum mirror_flags mirror_flags)
 {
-       char *name;
-       __u32 neg_flags = 0;
+       int rc;
 
-       if (string == NULL)
-               return -EINVAL;
+       rc = mirror_create_sanity_check(fname, mirror_list);
+       if (rc)
+               return rc;
 
-       *flags = 0;
-       for (name = strtok(string, ","); name; name = strtok(NULL, ",")) {
-               bool found = false;
-               int i;
+       while (mirror_list) {
+               if (mirror_list->m_file != NULL) {
+                       rc = mirror_extend_file(fname, mirror_list->m_file,
+                                               mirror_flags);
+               } else {
+                       __u32 mirror_count = mirror_list->m_count;
 
-               for (i = 0; i < ARRAY_SIZE(comp_flags_table); i++) {
-                       __u32 comp_flag = comp_flags_table[i].cfn_flag;
-                       const char *comp_name = comp_flags_table[i].cfn_name;
+                       while (mirror_count > 0) {
+                               rc = mirror_extend_layout(fname,
+                                                       mirror_list->m_layout);
+                               if (rc)
+                                       break;
 
-                       if (strcmp(name, comp_name) == 0) {
-                               *flags |= comp_flag;
-                               found = true;
-                       } else if (strncmp(name, "^", 1) == 0 &&
-                                  strcmp(name + 1, comp_name) == 0) {
-                               neg_flags |= comp_flag;
-                               found = true;
+                               --mirror_count;
                        }
                }
-               if (!found) {
-                       llapi_printf(LLAPI_MSG_ERROR, "Component flag "
-                                    "'%s' is not supported.\n", name);
-                       return -EINVAL;
-               }
-       }
-
-       if (*flags == 0 && neg_flags == 0)
-               return -EINVAL;
-       /* don't support mixed flags for now */
-       if (*flags && neg_flags)
-               return -EINVAL;
+               if (rc)
+                       break;
 
-       if (neg_flags) {
-               *flags = neg_flags;
-               comp_flags_set_neg(flags);
+               mirror_list = mirror_list->m_next;
        }
 
-       return 0;
+       return rc;
 }
 
-static inline bool arg_is_eof(char *arg)
+static int find_mirror_id(struct llapi_layout *layout, void *cbdata)
 {
-       return !strncmp(arg, "-1", strlen("-1")) ||
-              !strncmp(arg, "EOF", strlen("EOF")) ||
-              !strncmp(arg, "eof", strlen("eof"));
+       uint32_t id;
+       int rc;
+
+       rc = llapi_layout_mirror_id_get(layout, &id);
+       if (rc < 0)
+               return rc;
+
+       if ((__u16)id == *(__u16 *)cbdata)
+               return LLAPI_LAYOUT_ITER_STOP;
+
+       return LLAPI_LAYOUT_ITER_CONT;
 }
 
-enum {
-       LFS_POOL_OPT = 3,
-       LFS_COMP_COUNT_OPT,
-       LFS_COMP_START_OPT,
-       LFS_COMP_FLAGS_OPT,
-       LFS_COMP_DEL_OPT,
-       LFS_COMP_SET_OPT,
-       LFS_COMP_ADD_OPT,
-       LFS_PROJID_OPT,
-};
+static int find_comp_id(struct llapi_layout *layout, void *cbdata)
+{
+       uint32_t id;
+       int rc;
 
-/* functions */
-static int lfs_setstripe(int argc, char **argv)
+       rc = llapi_layout_comp_id_get(layout, &id);
+       if (rc < 0)
+               return rc;
+
+       if (id == *(__u32 *)cbdata)
+               return LLAPI_LAYOUT_ITER_STOP;
+
+       return LLAPI_LAYOUT_ITER_CONT;
+}
+static int mirror_split(const char *fname, __u32 id,
+                       enum mirror_flags mflags, const char *victim_file)
 {
-       struct lfs_setstripe_args        lsa;
-       struct llapi_stripe_param       *param = NULL;
-       struct find_param                migrate_mdt_param = {
-               .fp_max_depth = -1,
-               .fp_mdt_index = -1,
-       };
-       char                            *fname;
-       int                              result;
-       int                              result2 = 0;
-       char                            *end;
-       int                              c;
-       int                              delete = 0;
-       char                            *mdt_idx_arg = NULL;
-       unsigned long long               size_units = 1;
-       bool                             migrate_mode = false;
-       bool                             migration_block = false;
-       __u64                            migration_flags = 0;
-       __u32                            osts[LOV_MAX_STRIPE_COUNT] = { 0 };
-       int                              comp_del = 0, comp_set = 0;
-       int                              comp_add = 0;
-       __u32                            comp_id = 0;
-       struct llapi_layout             *layout = NULL;
-
-       struct option long_opts[] = {
-               /* --block is only valid in migrate mode */
-       { .val = 'b',   .name = "block",        .has_arg = no_argument},
-       { .val = LFS_COMP_ADD_OPT,
-                       .name = "comp-add",     .has_arg = no_argument},
-       { .val = LFS_COMP_ADD_OPT,
-                       .name = "component-add",
-                                               .has_arg = no_argument},
-       { .val = LFS_COMP_DEL_OPT,
-                       .name = "comp-del",     .has_arg = no_argument},
-       { .val = LFS_COMP_DEL_OPT,
-                       .name = "component-del",
-                                               .has_arg = no_argument},
-       { .val = LFS_COMP_FLAGS_OPT,
-                       .name = "comp-flags",   .has_arg = required_argument},
-       { .val = LFS_COMP_FLAGS_OPT,
-                       .name = "component-flags",
-                                               .has_arg = required_argument},
-       { .val = LFS_COMP_SET_OPT,
-                       .name = "comp-set",     .has_arg = no_argument},
-       { .val = LFS_COMP_SET_OPT,
-                       .name = "component-set",
-                                               .has_arg = no_argument},
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-       /* This formerly implied "stripe-count", but was explicitly
-        * made "stripe-count" for consistency with other options,
-        * and to separate it from "mdt-count" when DNE arrives. */
-       { .val = 'c',   .name = "count",        .has_arg = required_argument },
-#endif
-       { .val = 'c',   .name = "stripe-count", .has_arg = required_argument},
-       { .val = 'c',   .name = "stripe_count", .has_arg = required_argument},
-       { .val = 'd',   .name = "delete",       .has_arg = no_argument},
-       { .val = 'E',   .name = "comp-end",     .has_arg = required_argument},
-       { .val = 'E',   .name = "component-end",
-                                               .has_arg = required_argument},
-       /* dirstripe {"mdt-hash",     required_argument, 0, 'H'}, */
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-       /* This formerly implied "stripe-index", but was explicitly
-        * made "stripe-index" for consistency with other options,
-        * and to separate it from "mdt-index" when DNE arrives. */
-       { .val = 'i',   .name = "index",        .has_arg = required_argument },
-#endif
-       { .val = 'i',   .name = "stripe-index", .has_arg = required_argument},
-       { .val = 'i',   .name = "stripe_index", .has_arg = required_argument},
-       { .val = 'I',   .name = "comp-id",      .has_arg = required_argument},
-       { .val = 'I',   .name = "component-id", .has_arg = required_argument},
-       { .val = 'L',   .name = "layout",       .has_arg = required_argument },
-       { .val = 'm',   .name = "mdt",          .has_arg = required_argument},
-       { .val = 'm',   .name = "mdt-index",    .has_arg = required_argument},
-       { .val = 'm',   .name = "mdt_index",    .has_arg = required_argument},
-       /* --non-block is only valid in migrate mode */
-       { .val = 'n',   .name = "non-block",    .has_arg = no_argument},
-       { .val = 'o',   .name = "ost",          .has_arg = required_argument},
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-       { .val = 'o',   .name = "ost-list",     .has_arg = required_argument },
-       { .val = 'o',   .name = "ost_list",     .has_arg = required_argument },
-#endif
-       { .val = 'p',   .name = "pool",         .has_arg = required_argument },
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-       /* This formerly implied "--stripe-size", but was confusing
-        * with "lfs find --size|-s", which means "file size", so use
-        * the consistent "--stripe-size|-S" for all commands. */
-       { .val = 's',   .name = "size",         .has_arg = required_argument },
-#endif
-       { .val = 'S',   .name = "stripe-size",  .has_arg = required_argument },
-       { .val = 'S',   .name = "stripe_size",  .has_arg = required_argument },
-       /* dirstripe {"mdt-count",    required_argument, 0, 'T'}, */
-       /* --verbose is only valid in migrate mode */
-       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
-       { .val = LFS_COMP_ADD_OPT,
-                       .name = "component-add",
-                                               .has_arg = no_argument },
-       { .val = LFS_COMP_DEL_OPT,
-                       .name = "component-del",
-                                               .has_arg = no_argument },
-       { .val = LFS_COMP_FLAGS_OPT,
-                       .name = "component-flags",
-                                               .has_arg = required_argument },
-       { .val = LFS_COMP_SET_OPT,
-                       .name = "component-set",
-                                               .has_arg = no_argument },
-       { .name = NULL } };
+       struct llapi_layout *layout;
+       char parent[PATH_MAX];
+       char victim[PATH_MAX];
+       int flags = O_CREAT | O_EXCL | O_LOV_DELAY_CREATE | O_NOFOLLOW;
+       char *ptr;
+       struct ll_ioc_lease *data;
+       uint16_t mirror_count;
+       int mdt_index;
+       int fd, fdv;
+       int rc;
 
-       setstripe_args_init(&lsa);
+       /* check fname contains mirror with mirror_id/comp_id */
+       layout = llapi_layout_get_by_path(fname, 0);
+       if (!layout) {
+               fprintf(stderr,
+                       "error %s: file '%s' couldn't get layout\n",
+                       progname, fname);
+               return -EINVAL;
+       }
 
-       if (strcmp(argv[0], "migrate") == 0)
-               migrate_mode = true;
+       rc = mirror_sanity_check_one(layout);
+       if (rc)
+               goto free_layout;
 
-       while ((c = getopt_long(argc, argv, "bc:dE:i:I:m:no:p:L:s:S:v",
-                               long_opts, NULL)) >= 0) {
-               switch (c) {
-               case 0:
-                       /* Long options. */
-                       break;
-               case LFS_COMP_ADD_OPT:
-                       comp_add = 1;
-                       break;
-               case LFS_COMP_DEL_OPT:
-                       comp_del = 1;
-                       break;
-               case LFS_COMP_FLAGS_OPT:
-                       result = comp_str2flags(&lsa.lsa_comp_flags, optarg);
-                       if (result != 0) {
-                               fprintf(stderr, "error: %s: bad comp flags "
-                                       "'%s'\n", argv[0], optarg);
-                               goto error;
-                       }
-                       break;
-               case LFS_COMP_SET_OPT:
-                       comp_set = 1;
-                       break;
-               case 'b':
-                       if (!migrate_mode) {
-                               fprintf(stderr, "--block is valid only for"
-                                               " migrate mode\n");
-                               goto error;
-                       }
-                       migration_block = true;
-                       break;
-               case 'c':
-#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 6, 53, 0)
-                       if (strcmp(argv[optind - 1], "--count") == 0)
-                               fprintf(stderr, "warning: '--count' deprecated"
-                                       ", use '--stripe-count' instead\n");
-#endif
-                       lsa.lsa_stripe_count = strtoul(optarg, &end, 0);
-                       if (*end != '\0') {
-                               fprintf(stderr, "error: %s: bad stripe count "
-                                       "'%s'\n", argv[0], optarg);
-                               goto error;
-                       }
-                       break;
-               case 'd':
-                       /* delete the default striping pattern */
-                       delete = 1;
-                       break;
-               case 'E':
-                       if (lsa.lsa_comp_end != 0) {
-                               result = comp_args_to_layout(&layout, &lsa);
-                               if (result)
-                                       goto error;
+       rc = llapi_layout_mirror_count_get(layout, &mirror_count);
+       if (rc) {
+               fprintf(stderr,
+                       "error %s: file '%s' couldn't get mirror count\n",
+                       progname, fname);
+               goto free_layout;
+       }
+       if (mirror_count < 2) {
+               fprintf(stderr,
+                       "error %s: file '%s' has %d component, cannot split\n",
+                       progname, fname, mirror_count);
+               goto free_layout;
+       }
 
-                               setstripe_args_init(&lsa);
-                       }
+       if (mflags & MF_COMP_ID) {
+               rc = llapi_layout_comp_iterate(layout, find_comp_id, &id);
+               id = mirror_id_of(id);
+       } else {
+               rc = llapi_layout_comp_iterate(layout, find_mirror_id, &id);
+       }
+       if (rc < 0) {
+               fprintf(stderr, "error %s: failed to iterate layout of '%s'\n",
+                       progname, fname);
+               goto free_layout;
+       } else if (rc == LLAPI_LAYOUT_ITER_CONT) {
+               fprintf(stderr,
+                    "error %s: file '%s' does not contain mirror with id %u\n",
+                       progname, fname, id);
+               goto free_layout;
+       }
 
-                       if (arg_is_eof(optarg)) {
-                               lsa.lsa_comp_end = LUSTRE_EOF;
-                       } else {
-                               result = llapi_parse_size(optarg,
-                                                       &lsa.lsa_comp_end,
-                                                       &size_units, 0);
-                               if (result) {
-                                       fprintf(stderr, "error: %s: "
-                                               "bad component end '%s'\n",
-                                               argv[0], optarg);
-                                       goto error;
-                               }
-                       }
-                       break;
-               case 'i':
-                       if (strcmp(argv[optind - 1], "--index") == 0)
-                               fprintf(stderr, "warning: '--index' deprecated"
-                                       ", use '--stripe-index' instead\n");
-                       lsa.lsa_stripe_off = strtol(optarg, &end, 0);
-                       if (*end != '\0') {
-                               fprintf(stderr, "error: %s: bad stripe offset "
-                                       "'%s'\n", argv[0], optarg);
-                               goto error;
-                       }
-                       break;
-               case 'I':
-                       comp_id = strtoul(optarg, &end, 0);
-                       if (*end != '\0' || comp_id == 0 ||
-                           comp_id > LCME_ID_MAX) {
-                               fprintf(stderr, "error: %s: bad comp ID "
-                                       "'%s'\n", argv[0], optarg);
-                               goto error;
-                       }
-                       break;
-               case 'L':
-                       if (strcmp(argv[optind - 1], "mdt") == 0) {
-                               /* Can be only the first component */
-                               if (layout != NULL) {
-                                       result = -EINVAL;
-                                       fprintf(stderr, "error: 'mdt' layout "
-                                               "can be only the first one\n");
-                                       goto error;
-                               }
-                               if (lsa.lsa_comp_end > (1ULL << 30)) { /* 1Gb */
-                                       result = -EFBIG;
-                                       fprintf(stderr, "error: 'mdt' layout "
-                                               "size is too big\n");
-                                       goto error;
-                               }
-                               lsa.lsa_pattern = LLAPI_LAYOUT_MDT;
-                       } else if (strcmp(argv[optind - 1], "raid0") != 0) {
-                               result = -EINVAL;
-                               fprintf(stderr, "error: layout '%s' is "
-                                       "unknown, supported layouts are: "
-                                       "'mdt', 'raid0'\n", argv[optind]);
-                               goto error;
-                       }
-                       break;
-               case 'm':
-                       if (!migrate_mode) {
-                               fprintf(stderr, "--mdt-index is valid only for"
-                                               " migrate mode\n");
-                               goto error;
-                       }
-                       mdt_idx_arg = optarg;
-                       break;
-               case 'n':
-                       if (!migrate_mode) {
-                               fprintf(stderr, "--non-block is valid only for"
-                                               " migrate mode\n");
-                               goto error;
-                       }
-                       migration_flags |= MIGRATION_NONBLOCK;
-                       break;
-               case 'o':
-                       lsa.lsa_nr_osts = parse_targets(osts,
-                                               sizeof(osts) / sizeof(__u32),
-                                               lsa.lsa_nr_osts, optarg);
-                       if (lsa.lsa_nr_osts < 0) {
-                               fprintf(stderr,
-                                       "error: %s: bad OST indices '%s'\n",
-                                       argv[0], optarg);
-                               goto error;
-                       }
+       fd = open(fname, O_RDWR);
+       if (fd < 0) {
+               fprintf(stderr,
+                       "error %s: open file '%s' failed: %s\n",
+                       progname, fname, strerror(errno));
+               goto free_layout;
+       }
 
-                       lsa.lsa_osts = osts;
-                       if (lsa.lsa_stripe_off == -1)
-                               lsa.lsa_stripe_off = osts[0];
-                       break;
-               case 'p':
-                       if (optarg == NULL)
-                               goto error;
-                       lsa.lsa_pool_name = optarg;
-                       break;
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-               case 's':
-#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 6, 53, 0)
-                       fprintf(stderr, "warning: '--size|-s' deprecated, "
-                               "use '--stripe-size|-S' instead\n");
-#endif
-#endif /* LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0) */
-               case 'S':
-                       result = llapi_parse_size(optarg, &lsa.lsa_stripe_size,
-                                                 &size_units, 0);
-                       if (result) {
-                               fprintf(stderr, "error: %s: bad stripe size "
-                                       "'%s'\n", argv[0], optarg);
-                               goto error;
-                       }
-                       break;
-               case 'v':
-                       if (!migrate_mode) {
-                               fprintf(stderr, "--verbose is valid only for"
-                                               " migrate mode\n");
-                               goto error;
-                       }
-                       migrate_mdt_param.fp_verbose = VERBOSE_DETAIL;
-                       break;
-               default:
-                       goto error;
+       /* get victim file directory pathname */
+       if (strlen(fname) > sizeof(parent) - 1) {
+               fprintf(stderr, "error %s: file name of '%s' too long\n",
+                       progname, fname);
+               rc = -ERANGE;
+               goto close_fd;
+       }
+       strncpy(parent, fname, sizeof(parent));
+       ptr = strrchr(parent, '/');
+       if (ptr == NULL) {
+               if (getcwd(parent, sizeof(parent)) == NULL) {
+                       fprintf(stderr, "error %s: getcwd failed: %s\n",
+                               progname, strerror(errno));
+                       rc = -errno;
+                       goto close_fd;
                }
+       } else {
+               if (ptr == parent)
+                       ptr = parent + 1;
+               *ptr = '\0';
        }
 
-       fname = argv[optind];
+       rc = llapi_file_fget_mdtidx(fd, &mdt_index);
+       if (rc < 0) {
+               fprintf(stderr, "%s: cannot get MDT index of '%s'\n",
+                       progname, fname);
+               goto close_fd;
+       }
 
-       if (lsa.lsa_comp_end != 0) {
-               result = comp_args_to_layout(&layout, &lsa);
-               if (result)
-                       goto error;
+       if (victim_file == NULL) {
+               /* use a temp file to store the splitted layout */
+               if (mflags & MF_DESTROY) {
+                       fdv = llapi_create_volatile_idx(parent, mdt_index,
+                                                       O_LOV_DELAY_CREATE);
+               } else {
+                       snprintf(victim, sizeof(victim), "%s.mirror~%u",
+                                fname, id);
+                       fdv = open(victim, flags, S_IRUSR | S_IWUSR);
+               }
+       } else {
+               /* user specified victim file */
+               fdv = open(victim_file, flags, S_IRUSR | S_IWUSR);
        }
 
-       if (optind == argc) {
-               fprintf(stderr, "error: %s: missing filename|dirname\n",
-                       argv[0]);
-               goto error;
+       if (fdv < 0) {
+               fprintf(stderr,
+                       "error %s: create victim file failed: %s\n",
+                       progname, strerror(errno));
+               goto close_fd;
        }
 
-       /* Only LCME_FL_INIT flags is used in PFL, and it shouldn't be
-        * altered by user space tool, so we don't need to support the
-        * --component-set for this moment. */
-       if (comp_set != 0) {
-               fprintf(stderr, "error: %s: --component-set isn't supported.\n",
-                       argv[0]);
-               goto error;
+       /* get lease lock of fname */
+       rc = llapi_lease_acquire(fd, LL_LEASE_WRLCK);
+       if (rc < 0) {
+               fprintf(stderr,
+                       "error %s: cannot get lease of file '%s': %d\n",
+                       progname, fname, rc);
+               goto close_victim;
        }
 
-       if ((delete + comp_set + comp_del + comp_add) > 1) {
-               fprintf(stderr, "error: %s: can't specify --component-set, "
-                       "--component-del, --component-add or -d together\n",
-                       argv[0]);
-               goto error;
+       /* Atomatically put lease, split layouts and close. */
+       data = malloc(offsetof(typeof(*data), lil_ids[2]));
+       if (!data) {
+               rc = -ENOMEM;
+               goto close_victim;
        }
 
-       if (delete && (setstripe_args_specified(&lsa) || comp_id != 0 ||
-                      lsa.lsa_comp_flags != 0 || layout != NULL)) {
-               fprintf(stderr, "error: %s: can't specify -d with "
-                       "-s, -c, -o, -p, -I, -F or -E options\n",
-                       argv[0]);
-               goto error;
+       data->lil_mode = LL_LEASE_UNLCK;
+       data->lil_flags = LL_LEASE_LAYOUT_SPLIT;
+       data->lil_count = 2;
+       data->lil_ids[0] = fdv;
+       data->lil_ids[1] = id;
+       rc = llapi_lease_set(fd, data);
+       if (rc <= 0) {
+               if (rc == 0) /* lost lease lock */
+                       rc = -EBUSY;
+               fprintf(stderr,
+                       "error %s: cannot split '%s': %s\n",
+                       progname, fname, strerror(-rc));
+       } else {
+               rc = 0;
        }
+       free(data);
 
-       if ((comp_set || comp_del) &&
-           (setstripe_args_specified(&lsa) || layout != NULL)) {
-               fprintf(stderr, "error: %s: can't specify --component-del or "
-                       "--component-set with -s, -c, -o, -p or -E options.\n",
-                       argv[0]);
-               goto error;
-       }
+close_victim:
+       close(fdv);
+close_fd:
+       close(fd);
+free_layout:
+       llapi_layout_free(layout);
+       return rc;
+}
 
-       if (comp_del && comp_id != 0 && lsa.lsa_comp_flags != 0) {
-               fprintf(stderr, "error: %s: can't specify both -I and -F for "
-                       "--component-del option.\n", argv[0]);
-               goto error;
-       }
+/**
+ * Parse a string containing an target index list into an array of integers.
+ *
+ * The input string contains a comma delimited list of individual
+ * indices and ranges, for example "1,2-4,7". Add the indices into the
+ * \a tgts array and remove duplicates.
+ *
+ * \param[out] tgts    array to store indices in
+ * \param[in] size     size of \a tgts array
+ * \param[in] offset   starting index in \a tgts
+ * \param[in] arg      string containing OST index list
+ *
+ * \retval positive    number of indices in \a tgts
+ * \retval -EINVAL     unable to parse \a arg
+ */
+static int parse_targets(__u32 *tgts, int size, int offset, char *arg)
+{
+       int rc;
+       int nr = offset;
+       int slots = size - offset;
+       char *ptr = NULL;
+       bool end_of_loop;
 
-       if (comp_add || comp_del) {
-               struct stat st;
+       if (arg == NULL)
+               return -EINVAL;
 
-               result = lstat(fname, &st);
-               if (result == 0 && S_ISDIR(st.st_mode)) {
-                       fprintf(stderr, "error: %s: can't use --component-add "
-                               "or --component-del for directory.\n",
-                               argv[0]);
-                       goto error;
-               }
-       }
+       end_of_loop = false;
+       while (!end_of_loop) {
+               int start_index;
+               int end_index;
+               int i;
+               char *endptr = NULL;
 
-       if (comp_add) {
-               if (layout == NULL) {
-                       fprintf(stderr, "error: %s: -E option must be present"
-                               "in --component-add mode.\n", argv[0]);
-                       goto error;
-               }
-               result = adjust_first_extent(fname, layout);
-               if (result == -ENODATA)
-                       comp_add = 0;
-               else if (result != 0)
-                       goto error;
-       }
+               rc = -EINVAL;
 
-       if (mdt_idx_arg != NULL && optind > 3) {
-               fprintf(stderr, "error: %s: cannot specify -m with other "
-                       "options\n", argv[0]);
-               goto error;
-       }
+               ptr = strchrnul(arg, ',');
 
-       if ((migration_flags & MIGRATION_NONBLOCK) && migration_block) {
-               fprintf(stderr,
-                       "error: %s: cannot specify --non-block and --block\n",
-                       argv[0]);
-               goto error;
-       }
+               end_of_loop = *ptr == '\0';
+               *ptr = '\0';
 
-       if (!comp_del && !comp_set && comp_id != 0) {
-               fprintf(stderr, "error: %s: -I can only be used with "
-                       "--component-del.\n", argv[0]);
-               goto error;
-       }
+               start_index = strtol(arg, &endptr, 0);
+               if (endptr == arg) /* no data at all */
+                       break;
+               if (*endptr != '-' && *endptr != '\0') /* has invalid data */
+                       break;
 
-       if (mdt_idx_arg != NULL) {
-               /* initialize migrate mdt parameters */
-               migrate_mdt_param.fp_mdt_index = strtoul(mdt_idx_arg, &end, 0);
-               if (*end != '\0') {
-                       fprintf(stderr, "error: %s: bad MDT index '%s'\n",
-                               argv[0], mdt_idx_arg);
-                       goto error;
-               }
-               migrate_mdt_param.fp_migrate = 1;
-       } else if (layout == NULL) {
-               /* initialize stripe parameters */
-               param = calloc(1, offsetof(typeof(*param),
-                              lsp_osts[lsa.lsa_nr_osts]));
-               if (param == NULL) {
-                       fprintf(stderr, "error: %s: %s\n", argv[0],
-                               strerror(ENOMEM));
-                       goto error;
+               end_index = start_index;
+               if (*endptr == '-') {
+                       end_index = strtol(endptr + 1, &endptr, 0);
+                       if (*endptr != '\0')
+                               break;
+                       if (end_index < start_index)
+                               break;
                }
 
-               param->lsp_stripe_size = lsa.lsa_stripe_size;
-               param->lsp_stripe_offset = lsa.lsa_stripe_off;
-               param->lsp_stripe_count = lsa.lsa_stripe_count;
-               param->lsp_pool = lsa.lsa_pool_name;
-               param->lsp_is_specific = false;
-               if (lsa.lsa_nr_osts > 0) {
-                       if (lsa.lsa_stripe_count > 0 &&
-                           lsa.lsa_nr_osts != lsa.lsa_stripe_count) {
-                               fprintf(stderr, "error: %s: stripe count '%d' "
-                                       "doesn't match the number of OSTs: %d\n"
-                                       , argv[0], lsa.lsa_stripe_count,
-                                       lsa.lsa_nr_osts);
-                               free(param);
-                               goto error;
-                       }
-
-                       param->lsp_is_specific = true;
-                       param->lsp_stripe_count = lsa.lsa_nr_osts;
-                       memcpy(param->lsp_osts, osts,
-                              sizeof(*osts) * lsa.lsa_nr_osts);
-               }
-       }
+               for (i = start_index; i <= end_index && slots > 0; i++) {
+                       int j;
 
-       for (fname = argv[optind]; fname != NULL; fname = argv[++optind]) {
-               char *op;
-               if (mdt_idx_arg != NULL) {
-                       result = llapi_migrate_mdt(fname, &migrate_mdt_param);
-                       op = "migrate mdt objects of";
-               } else if (migrate_mode) {
-                       result = lfs_migrate(fname, migration_flags, param,
-                                            layout);
-                       op = "migrate ost objects of";
-               } else if (comp_set != 0) {
-                       result = lfs_component_set(fname, comp_id,
-                                                  lsa.lsa_comp_flags);
-                       op = "modify component flags of";
-               } else if (comp_del != 0) {
-                       result = lfs_component_del(fname, comp_id,
-                                                  lsa.lsa_comp_flags);
-                       op = "delete component of";
-               } else if (comp_add != 0) {
-                       result = lfs_component_add(fname, layout);
-                       op = "add component to";
-               } else if (layout != NULL) {
-                       result = lfs_component_create(fname, O_CREAT | O_WRONLY,
-                                                     0644, layout);
-                       if (result >= 0) {
-                               close(result);
-                               result = 0;
+                       /* remove duplicate */
+                       for (j = 0; j < offset; j++) {
+                               if (tgts[j] == i)
+                                       break;
                        }
-                       op = "create composite";
-               } else {
-                       result = llapi_file_open_param(fname,
-                                                      O_CREAT | O_WRONLY,
-                                                      0644, param);
-                       if (result >= 0) {
-                               close(result);
-                               result = 0;
+                       if (j == offset) { /* no duplicate */
+                               tgts[nr++] = i;
+                               --slots;
                        }
-                       op = "create striped";
-               }
-               if (result) {
-                       /* Save the first error encountered. */
-                       if (result2 == 0)
-                               result2 = result;
-                       fprintf(stderr, "error: %s: %s file '%s' failed: %s\n",
-                               argv[0], op, fname,
-                               lsa.lsa_pool_name != NULL && result == EINVAL ?
-                               "OST not in pool?" : strerror(errno));
-                       continue;
                }
+               if (slots == 0 && i < end_index)
+                       break;
+
+               *ptr = ',';
+               arg = ++ptr;
+               offset = nr;
+               rc = 0;
        }
+       if (!end_of_loop && ptr != NULL)
+               *ptr = ',';
 
-       free(param);
-       llapi_layout_free(layout);
-       return result2;
-error:
-       llapi_layout_free(layout);
-       return CMD_HELP;
+       return rc < 0 ? rc : nr;
 }
 
-static int lfs_poollist(int argc, char **argv)
-{
-        if (argc != 2)
-                return CMD_HELP;
-
-        return llapi_poollist(argv[1]);
-}
+struct lfs_setstripe_args {
+       unsigned long long       lsa_comp_end;
+       unsigned long long       lsa_stripe_size;
+       long long                lsa_stripe_count;
+       long long                lsa_stripe_off;
+       __u32                    lsa_comp_flags;
+       __u32                    lsa_comp_neg_flags;
+       unsigned long long       lsa_pattern;
+       unsigned int             lsa_mirror_count;
+       int                      lsa_nr_tgts;
+       bool                     lsa_first_comp;
+       __u32                   *lsa_tgts;
+       char                    *lsa_pool_name;
+};
 
-static int set_time(time_t *time, time_t *set, char *str)
+static inline void setstripe_args_init(struct lfs_setstripe_args *lsa)
 {
-        time_t t;
-        int res = 0;
-
-        if (str[0] == '+')
-                res = 1;
-        else if (str[0] == '-')
-                res = -1;
-
-        if (res)
-                str++;
-
-        t = strtol(str, NULL, 0);
-        if (*time < t * 24 * 60 * 60) {
-                if (res)
-                        str--;
-                fprintf(stderr, "Wrong time '%s' is specified.\n", str);
-                return INT_MAX;
-        }
+       unsigned int mirror_count = lsa->lsa_mirror_count;
+       bool first_comp = lsa->lsa_first_comp;
 
-        *set = *time - t * 24 * 60 * 60;
-        return res;
-}
-static int name2uid(unsigned int *id, const char *name)
-{
-       struct passwd *passwd;
+       memset(lsa, 0, sizeof(*lsa));
 
-       passwd = getpwnam(name);
-       if (passwd == NULL)
-               return -ENOENT;
-       *id = passwd->pw_uid;
+       lsa->lsa_stripe_size = LLAPI_LAYOUT_DEFAULT;
+       lsa->lsa_stripe_count = LLAPI_LAYOUT_DEFAULT;
+       lsa->lsa_stripe_off = LLAPI_LAYOUT_DEFAULT;
+       lsa->lsa_pattern = LLAPI_LAYOUT_RAID0;
+       lsa->lsa_pool_name = NULL;
 
-       return 0;
+       lsa->lsa_mirror_count = mirror_count;
+       lsa->lsa_first_comp = first_comp;
 }
 
-static int name2gid(unsigned int *id, const char *name)
+/**
+ * setstripe_args_init_inherit() - Initialize and inherit stripe options.
+ * @lsa: Stripe options to be initialized and inherited.
+ *
+ * This function initializes stripe options in @lsa and inherit
+ * stripe_size, stripe_count and OST pool_name options.
+ *
+ * Return: void.
+ */
+static inline void setstripe_args_init_inherit(struct lfs_setstripe_args *lsa)
 {
-       struct group *group;
+       unsigned long long stripe_size;
+       long long stripe_count;
+       char *pool_name = NULL;
 
-       group = getgrnam(name);
-       if (group == NULL)
-               return -ENOENT;
-       *id = group->gr_gid;
+       stripe_size = lsa->lsa_stripe_size;
+       stripe_count = lsa->lsa_stripe_count;
+       pool_name = lsa->lsa_pool_name;
 
-       return 0;
+       setstripe_args_init(lsa);
+
+       lsa->lsa_stripe_size = stripe_size;
+       lsa->lsa_stripe_count = stripe_count;
+       lsa->lsa_pool_name = pool_name;
 }
 
-static inline int name2projid(unsigned int *id, const char *name)
+static inline bool setstripe_args_specified(struct lfs_setstripe_args *lsa)
 {
-       return -ENOTSUP;
+       return (lsa->lsa_stripe_size != LLAPI_LAYOUT_DEFAULT ||
+               lsa->lsa_stripe_count != LLAPI_LAYOUT_DEFAULT ||
+               lsa->lsa_stripe_off != LLAPI_LAYOUT_DEFAULT ||
+               lsa->lsa_pattern != LLAPI_LAYOUT_RAID0 ||
+               lsa->lsa_pool_name != NULL ||
+               lsa->lsa_comp_end != 0);
 }
 
-static int uid2name(char **name, unsigned int id)
+/**
+ * comp_args_to_layout() - Create or extend a composite layout.
+ * @composite:       Pointer to the composite layout.
+ * @lsa:             Stripe options for the new component.
+ *
+ * This function creates or extends a composite layout by adding a new
+ * component with stripe options from @lsa.
+ *
+ * Return: 0 on success or an error code on failure.
+ */
+static int comp_args_to_layout(struct llapi_layout **composite,
+                              struct lfs_setstripe_args *lsa,
+                              bool set_extent)
 {
-       struct passwd *passwd;
+       struct llapi_layout *layout = *composite;
+       uint64_t prev_end = 0;
+       int i = 0, rc;
 
-       passwd = getpwuid(id);
-       if (passwd == NULL)
-               return -ENOENT;
-       *name = passwd->pw_name;
+       if (layout == NULL) {
+               layout = llapi_layout_alloc();
+               if (layout == NULL) {
+                       fprintf(stderr, "Alloc llapi_layout failed. %s\n",
+                               strerror(errno));
+                       return -ENOMEM;
+               }
+               *composite = layout;
+       } else {
+               uint64_t start;
 
-       return 0;
-}
+               /* Get current component extent, current component
+                * must be the tail component. */
+               rc = llapi_layout_comp_extent_get(layout, &start, &prev_end);
+               if (rc) {
+                       fprintf(stderr, "Get comp extent failed. %s\n",
+                               strerror(errno));
+                       return rc;
+               }
 
-static inline int gid2name(char **name, unsigned int id)
-{
-       struct group *group;
+               if (lsa->lsa_first_comp)
+                       prev_end = 0;
 
-       group = getgrgid(id);
-       if (group == NULL)
-               return -ENOENT;
-       *name = group->gr_name;
+               if (lsa->lsa_first_comp)
+                       rc = llapi_layout_add_first_comp(layout);
+               else
+                       rc = llapi_layout_comp_add(layout);
+               if (rc) {
+                       fprintf(stderr, "Add component failed. %s\n",
+                               strerror(errno));
+                       return rc;
+               }
+       }
+       /* reset lsa_first_comp */
+       lsa->lsa_first_comp = false;
 
-       return 0;
-}
+       if (set_extent) {
+               rc = llapi_layout_comp_extent_set(layout, prev_end,
+                                                 lsa->lsa_comp_end);
+               if (rc) {
+                       fprintf(stderr, "Set extent [%lu, %llu) failed. %s\n",
+                               prev_end, lsa->lsa_comp_end, strerror(errno));
+                       return rc;
+               }
+       }
 
-static int name2layout(__u32 *layout, char *name)
-{
-       char *ptr, *layout_name;
+       /* Data-on-MDT component setting */
+       if (lsa->lsa_pattern == LLAPI_LAYOUT_MDT) {
+               /* In case of Data-on-MDT patterns the only extra option
+                * applicable is stripe size option. */
+               if (lsa->lsa_stripe_count != LLAPI_LAYOUT_DEFAULT) {
+                       fprintf(stderr, "Option 'stripe-count' can't be "
+                               "specified with Data-on-MDT component: %lld\n",
+                               lsa->lsa_stripe_count);
+                       return -EINVAL;
+               }
+               if (lsa->lsa_stripe_size != LLAPI_LAYOUT_DEFAULT) {
+                       fprintf(stderr, "Option 'stripe-size' can't be "
+                               "specified with Data-on-MDT component: %llu\n",
+                               lsa->lsa_stripe_size);
+                       return -EINVAL;
+               }
+               if (lsa->lsa_nr_tgts != 0) {
+                       fprintf(stderr, "Option 'ost-list' can't be specified "
+                               "with Data-on-MDT component: '%i'\n",
+                               lsa->lsa_nr_tgts);
+                       return -EINVAL;
+               }
+               if (lsa->lsa_stripe_off != LLAPI_LAYOUT_DEFAULT) {
+                       fprintf(stderr, "Option 'stripe-offset' can't be "
+                               "specified with Data-on-MDT component: %lld\n",
+                               lsa->lsa_stripe_off);
+                       return -EINVAL;
+               }
+               if (lsa->lsa_pool_name != 0) {
+                       fprintf(stderr, "Option 'pool' can't be specified "
+                               "with Data-on-MDT component: '%s'\n",
+                               lsa->lsa_pool_name);
+                       return -EINVAL;
+               }
 
-       *layout = 0;
-       for (ptr = name; ; ptr = NULL) {
-               layout_name = strtok(ptr, ",");
-               if (layout_name == NULL)
-                       break;
-               if (strcmp(layout_name, "released") == 0)
-                       *layout |= LOV_PATTERN_F_RELEASED;
-               else if (strcmp(layout_name, "raid0") == 0)
-                       *layout |= LOV_PATTERN_RAID0;
-               else if (strcmp(layout_name, "mdt") == 0)
-                       *layout |= LOV_PATTERN_MDT;
-               else
-                       return -1;
+               rc = llapi_layout_pattern_set(layout, lsa->lsa_pattern);
+               if (rc) {
+                       fprintf(stderr, "Set stripe pattern %#llx failed. %s\n",
+                               lsa->lsa_pattern, strerror(errno));
+                       return rc;
+               }
+               /* Data-on-MDT component has always single stripe up to end */
+               lsa->lsa_stripe_size = lsa->lsa_comp_end;
+       }
+
+       rc = llapi_layout_stripe_size_set(layout, lsa->lsa_stripe_size);
+       if (rc) {
+               fprintf(stderr, "Set stripe size %llu failed: %s\n",
+                       lsa->lsa_stripe_size, strerror(errno));
+               return rc;
+       }
+
+       rc = llapi_layout_stripe_count_set(layout, lsa->lsa_stripe_count);
+       if (rc) {
+               fprintf(stderr, "Set stripe count %lld failed: %s\n",
+                       lsa->lsa_stripe_count, strerror(errno));
+               return rc;
+       }
+
+       rc = llapi_layout_comp_flags_set(layout, lsa->lsa_comp_flags);
+       if (rc) {
+               fprintf(stderr, "Set flags 0x%x failed: %s\n",
+                       lsa->lsa_comp_flags, strerror(errno));
+               return rc;
+       }
+
+       if (lsa->lsa_pool_name != NULL) {
+               rc = llapi_layout_pool_name_set(layout, lsa->lsa_pool_name);
+               if (rc) {
+                       fprintf(stderr, "Set pool name: %s failed. %s\n",
+                               lsa->lsa_pool_name, strerror(errno));
+                       return rc;
+               }
+       } else {
+               rc = llapi_layout_pool_name_set(layout, "");
+               if (rc) {
+                       fprintf(stderr, "Clear pool name failed: %s\n",
+                               strerror(errno));
+                       return rc;
+               }
+       }
+
+       if (lsa->lsa_nr_tgts > 0) {
+               if (lsa->lsa_stripe_count > 0 &&
+                   lsa->lsa_stripe_count != LLAPI_LAYOUT_DEFAULT &&
+                   lsa->lsa_stripe_count != LLAPI_LAYOUT_WIDE &&
+                   lsa->lsa_nr_tgts != lsa->lsa_stripe_count) {
+                       fprintf(stderr, "stripe_count(%lld) != nr_tgts(%d)\n",
+                               lsa->lsa_stripe_count, lsa->lsa_nr_tgts);
+                       return -EINVAL;
+               }
+               for (i = 0; i < lsa->lsa_nr_tgts; i++) {
+                       rc = llapi_layout_ost_index_set(layout, i,
+                                                       lsa->lsa_tgts[i]);
+                       if (rc)
+                               break;
+               }
+       } else if (lsa->lsa_stripe_off != LLAPI_LAYOUT_DEFAULT &&
+                  lsa->lsa_stripe_off != -1) {
+               rc = llapi_layout_ost_index_set(layout, 0, lsa->lsa_stripe_off);
+       }
+       if (rc) {
+               fprintf(stderr, "Set ost index %d failed. %s\n",
+                       i, strerror(errno));
+               return rc;
        }
+
        return 0;
 }
 
-static int lfs_find(int argc, char **argv)
+static int build_component(struct llapi_layout **layout,
+                          struct lfs_setstripe_args *lsa, bool set_extent)
 {
-       int c, rc;
-       int ret = 0;
-       time_t t;
-       struct find_param param = {
-               .fp_max_depth = -1,
-               .fp_quiet = 1,
-       };
-        struct option long_opts[] = {
-       { .val = 'A',   .name = "atime",        .has_arg = required_argument },
-       { .val = LFS_COMP_COUNT_OPT,
-                       .name = "comp-count",   .has_arg = required_argument },
-       { .val = LFS_COMP_COUNT_OPT,
-                       .name = "component-count",
-                                               .has_arg = required_argument },
-       { .val = LFS_COMP_FLAGS_OPT,
-                       .name = "comp-flags",   .has_arg = required_argument },
-       { .val = LFS_COMP_FLAGS_OPT,
-                       .name = "component-flags",
-                                               .has_arg = required_argument },
-       { .val = LFS_COMP_START_OPT,
-                       .name = "comp-start",   .has_arg = required_argument },
-       { .val = LFS_COMP_START_OPT,
-                       .name = "component-start",
-                                               .has_arg = required_argument },
-       { .val = 'c',   .name = "stripe-count", .has_arg = required_argument },
-       { .val = 'c',   .name = "stripe_count", .has_arg = required_argument },
-       { .val = 'C',   .name = "ctime",        .has_arg = required_argument },
-       { .val = 'D',   .name = "maxdepth",     .has_arg = required_argument },
-       { .val = 'E',   .name = "comp-end",     .has_arg = required_argument },
-       { .val = 'E',   .name = "component-end",
-                                               .has_arg = required_argument },
-       { .val = 'g',   .name = "gid",          .has_arg = required_argument },
-       { .val = 'G',   .name = "group",        .has_arg = required_argument },
-       { .val = 'H',   .name = "mdt-hash",     .has_arg = required_argument },
-       { .val = 'i',   .name = "stripe-index", .has_arg = required_argument },
-       { .val = 'i',   .name = "stripe_index", .has_arg = required_argument },
-       /*{"component-id", required_argument, 0, 'I'},*/
-       { .val = 'L',   .name = "layout",       .has_arg = required_argument },
-       { .val = 'm',   .name = "mdt",          .has_arg = required_argument },
-       { .val = 'm',   .name = "mdt-index",    .has_arg = required_argument },
-       { .val = 'm',   .name = "mdt_index",    .has_arg = required_argument },
-       { .val = 'M',   .name = "mtime",        .has_arg = required_argument },
-       { .val = 'n',   .name = "name",         .has_arg = required_argument },
-     /* reserve {"or",           no_argument,     , 0, 'o'}, to match find(1) */
-       { .val = 'O',   .name = "obd",          .has_arg = required_argument },
-       { .val = 'O',   .name = "ost",          .has_arg = required_argument },
-       /* no short option for pool, p/P already used */
-       { .val = LFS_POOL_OPT,
-                       .name = "pool",         .has_arg = required_argument },
-       { .val = 'p',   .name = "print0",       .has_arg = no_argument },
-       { .val = 'P',   .name = "print",        .has_arg = no_argument },
-       { .val = LFS_PROJID_OPT,
-                       .name = "projid",       .has_arg = required_argument },
-       { .val = 's',   .name = "size",         .has_arg = required_argument },
-       { .val = 'S',   .name = "stripe-size",  .has_arg = required_argument },
-       { .val = 'S',   .name = "stripe_size",  .has_arg = required_argument },
-       { .val = 't',   .name = "type",         .has_arg = required_argument },
-       { .val = 'T',   .name = "mdt-count",    .has_arg = required_argument },
-       { .val = 'u',   .name = "uid",          .has_arg = required_argument },
-       { .val = 'U',   .name = "user",         .has_arg = required_argument },
-       { .name = NULL } };
-        int pathstart = -1;
-        int pathend = -1;
-        int neg_opt = 0;
-        time_t *xtime;
-        int *xsign;
-        int isoption;
-        char *endptr;
+       int rc;
 
-        time(&t);
+       rc = comp_args_to_layout(layout, lsa, set_extent);
+       if (rc)
+               return rc;
 
-       /* when getopt_long_only() hits '!' it returns 1, puts "!" in optarg */
-       while ((c = getopt_long_only(argc, argv,
-                       "-A:c:C:D:E:g:G:H:i:L:m:M:n:O:Ppqrs:S:t:T:u:U:v",
-                       long_opts, NULL)) >= 0) {
-                xtime = NULL;
-                xsign = NULL;
-                if (neg_opt)
-                        --neg_opt;
-                /* '!' is part of option */
-                /* when getopt_long_only() finds a string which is not
-                 * an option nor a known option argument it returns 1
-                 * in that case if we already have found pathstart and pathend
-                 * (i.e. we have the list of pathnames),
-                 * the only supported value is "!"
-                 */
-                isoption = (c != 1) || (strcmp(optarg, "!") == 0);
-                if (!isoption && pathend != -1) {
-                        fprintf(stderr, "err: %s: filename|dirname must either "
-                                        "precede options or follow options\n",
-                                        argv[0]);
-                        ret = CMD_HELP;
-                        goto err;
-                }
-                if (!isoption && pathstart == -1)
-                        pathstart = optind - 1;
-                if (isoption && pathstart != -1 && pathend == -1)
-                        pathend = optind - 2;
-                switch (c) {
-                case 0:
-                        /* Long options. */
-                        break;
-                case 1:
-                        /* unknown; opt is "!" or path component,
-                         * checking done above.
-                         */
-                        if (strcmp(optarg, "!") == 0)
-                                neg_opt = 2;
-                        break;
-               case 'A':
-                       xtime = &param.fp_atime;
-                       xsign = &param.fp_asign;
-                       param.fp_exclude_atime = !!neg_opt;
-                       /* no break, this falls through to 'C' for ctime */
-               case 'C':
-                       if (c == 'C') {
-                               xtime = &param.fp_ctime;
-                               xsign = &param.fp_csign;
-                               param.fp_exclude_ctime = !!neg_opt;
-                       }
-                       /* no break, this falls through to 'M' for mtime */
-               case 'M':
-                       if (c == 'M') {
-                               xtime = &param.fp_mtime;
-                               xsign = &param.fp_msign;
-                               param.fp_exclude_mtime = !!neg_opt;
-                       }
-                       rc = set_time(&t, xtime, optarg);
-                       if (rc == INT_MAX) {
-                               ret = -1;
-                               goto err;
-                       }
+       if (lsa->lsa_mirror_count > 0) {
+               rc = llapi_layout_mirror_count_set(*layout,
+                                                  lsa->lsa_mirror_count);
+               if (rc)
+                       return rc;
+
+               rc = llapi_layout_flags_set(*layout, LCM_FL_RDONLY);
+               if (rc)
+                       return rc;
+               lsa->lsa_mirror_count = 0;
+       }
+
+       return rc;
+}
+
+static int build_layout_from_yaml_node(struct cYAML *node,
+                                      struct llapi_layout **layout,
+                                      struct lfs_setstripe_args *lsa,
+                                      __u32 *osts)
+{
+       char *string;
+       int rc = 0;
+
+       while (node) {
+               if (node->cy_type == CYAML_TYPE_OBJECT) {
+                       /* go deep to sub blocks */
+                       rc = build_layout_from_yaml_node(node->cy_child, layout,
+                                                        lsa, osts);
                        if (rc)
-                               *xsign = rc;
-                       break;
-               case LFS_COMP_COUNT_OPT:
-                       if (optarg[0] == '+') {
-                               param.fp_comp_count_sign = -1;
-                               optarg++;
-                       } else if (optarg[0] == '-') {
-                               param.fp_comp_count_sign =  1;
-                               optarg++;
+                               return rc;
+               } else {
+                       if (node->cy_string == NULL)
+                               return -EINVAL;
+
+                       string = node->cy_string;
+                       /* skip leading lmm_ if present, to simplify parsing */
+                       if (strncmp(string, "lmm_", 4) == 0)
+                               string += 4;
+
+                       if (node->cy_type == CYAML_TYPE_STRING) {
+                               if (!strcmp(string, "lcme_extent.e_end")) {
+                                       if (!strcmp(node->cy_valuestring, "EOF") ||
+                                           !strcmp(node->cy_valuestring, "eof"))
+                                               lsa->lsa_comp_end = LUSTRE_EOF;
+                               } else if (!strcmp(string, "pool")) {
+                                       lsa->lsa_pool_name = node->cy_valuestring;
+                               } else if (!strcmp(string, "pattern")) {
+                                       if (!strcmp(node->cy_valuestring, "mdt"))
+                                               lsa->lsa_pattern = LLAPI_LAYOUT_MDT;
+                               } else if (!strcmp(string, "lcme_flags")) {
+                                       rc = comp_str2flags(node->cy_valuestring,
+                                                           &lsa->lsa_comp_flags,
+                                                           &lsa->lsa_comp_neg_flags);
+                                       if (rc)
+                                               return rc;
+                                       /* Only template flags have meaning in
+                                        * the layout for a new file
+                                        */
+                                       lsa->lsa_comp_flags &= LCME_TEMPLATE_FLAGS;
+                               }
+                       } else if (node->cy_type == CYAML_TYPE_NUMBER) {
+                               if (!strcmp(string, "lcm_mirror_count")) {
+                                       lsa->lsa_mirror_count = node->cy_valueint;
+                               } else if (!strcmp(string, "lcme_extent.e_start")) {
+                                       if (node->cy_valueint != 0 || *layout != NULL) {
+                                               rc = build_component(layout, lsa, true);
+                                               if (rc)
+                                                       return rc;
+                                       }
+
+                                       if (node->cy_valueint == 0)
+                                               lsa->lsa_first_comp = true;
+
+                                       /* initialize lsa */
+                                       setstripe_args_init(lsa);
+                                       lsa->lsa_tgts = osts;
+                               } else if (!strcmp(string, "lcme_extent.e_end")) {
+                                       if (node->cy_valueint == -1)
+                                               lsa->lsa_comp_end = LUSTRE_EOF;
+                                       else
+                                               lsa->lsa_comp_end = node->cy_valueint;
+                               } else if (!strcmp(string, "stripe_count")) {
+                                       lsa->lsa_stripe_count = node->cy_valueint;
+                               } else if (!strcmp(string, "stripe_size")) {
+                                       lsa->lsa_stripe_size = node->cy_valueint;
+                               } else if (!strcmp(string, "stripe_offset")) {
+                                       lsa->lsa_stripe_off = node->cy_valueint;
+                               } else if (!strcmp(string, "l_ost_idx")) {
+                                       osts[lsa->lsa_nr_tgts] = node->cy_valueint;
+                                       lsa->lsa_nr_tgts++;
+                               }
                        }
+               }
+               node = node->cy_next;
+       }
 
-                       param.fp_comp_count = strtoul(optarg, &endptr, 0);
-                       if (*endptr != '\0') {
-                               fprintf(stderr, "error: bad component count "
-                                       "'%s'\n", optarg);
-                               goto err;
-                       }
-                       param.fp_check_comp_count = 1;
-                       param.fp_exclude_comp_count = !!neg_opt;
-                       break;
-               case LFS_COMP_FLAGS_OPT:
-                       rc = comp_str2flags(&param.fp_comp_flags, optarg);
-                       if (rc || comp_flags_is_neg(param.fp_comp_flags)) {
-                               fprintf(stderr, "error: bad component flags "
+       return rc;
+}
+
+static int lfs_comp_create_from_yaml(char *template,
+                                    struct llapi_layout **layout,
+                                    struct lfs_setstripe_args *lsa,
+                                    __u32 *osts)
+{
+       struct cYAML *tree = NULL, *err_rc = NULL;
+       int rc = 0;
+
+       tree = cYAML_build_tree(template, NULL, 0, &err_rc, false);
+       if (!tree) {
+               fprintf(stderr, "%s: cannot parse YAML file %s\n",
+                       progname, template);
+               cYAML_build_error(-EINVAL, -1, "yaml", "from comp yaml",
+                                 "can't parse", &err_rc);
+               cYAML_print_tree2file(stderr, err_rc);
+               cYAML_free_tree(err_rc);
+               rc = -EINVAL;
+               goto err;
+       }
+
+       /* initialize lsa for plain file */
+       setstripe_args_init(lsa);
+       lsa->lsa_tgts = osts;
+
+       rc = build_layout_from_yaml_node(tree, layout, lsa, osts);
+       if (rc) {
+               fprintf(stderr, "%s: cannot build layout from YAML file %s.\n",
+                       progname, template);
+               goto err;
+       } else {
+               rc = build_component(layout, lsa, *layout != NULL);
+       }
+       /* clean clean lsa */
+       setstripe_args_init(lsa);
+
+err:
+       if (tree)
+               cYAML_free_tree(tree);
+       return rc;
+}
+
+/* In 'lfs setstripe --component-add' mode, we need to fetch the extent
+ * end of the last component in the existing file, and adjust the
+ * first extent start of the components to be added accordingly. */
+static int adjust_first_extent(char *fname, struct llapi_layout *layout)
+{
+       struct llapi_layout *head;
+       uint64_t start, end, stripe_size, prev_end = 0;
+       int rc;
+
+       if (layout == NULL) {
+               fprintf(stderr,
+                       "%s setstripe: layout must be specified\n",
+                       progname);
+               return -EINVAL;
+       }
+
+       errno = 0;
+       head = llapi_layout_get_by_path(fname, 0);
+       if (head == NULL) {
+               fprintf(stderr,
+                       "%s setstripe: cannot read layout from '%s': %s\n",
+                       progname, fname, strerror(errno));
+               return -EINVAL;
+       } else if (errno == ENODATA) {
+               /* file without LOVEA, this component-add will be turned
+                * into a component-create. */
+               llapi_layout_free(head);
+               return -ENODATA;
+       } else if (!llapi_layout_is_composite(head)) {
+               fprintf(stderr, "%s setstripe: '%s' not a composite file\n",
+                       progname, fname);
+               llapi_layout_free(head);
+               return -EINVAL;
+       }
+
+       rc = llapi_layout_comp_extent_get(head, &start, &prev_end);
+       if (rc) {
+               fprintf(stderr, "%s setstripe: cannot get prev extent: %s\n",
+                       progname, strerror(errno));
+               llapi_layout_free(head);
+               return rc;
+       }
+
+       llapi_layout_free(head);
+
+       /* Make sure we use the first component of the layout to be added. */
+       rc = llapi_layout_comp_use(layout, LLAPI_LAYOUT_COMP_USE_FIRST);
+       if (rc < 0) {
+               fprintf(stderr,
+                       "%s setstripe: cannot move component cursor: %s\n",
+                       progname, strerror(errno));
+               return rc;
+       }
+
+       rc = llapi_layout_comp_extent_get(layout, &start, &end);
+       if (rc) {
+               fprintf(stderr, "%s setstripe: cannot get extent: %s\n",
+                       progname, strerror(errno));
+               return rc;
+       }
+
+       if (start > prev_end || end <= prev_end) {
+               fprintf(stderr,
+                       "%s setstripe: first extent [%lu, %lu) not adjacent with extent end %lu\n",
+                       progname, start, end, prev_end);
+               return -EINVAL;
+       }
+
+       rc = llapi_layout_stripe_size_get(layout, &stripe_size);
+       if (rc) {
+               fprintf(stderr, "%s setstripe: cannot get stripe size: %s\n",
+                       progname, strerror(errno));
+               return rc;
+       }
+
+       if (stripe_size != LLAPI_LAYOUT_DEFAULT &&
+           (prev_end & (stripe_size - 1))) {
+               fprintf(stderr,
+                       "%s setstripe: stripe size %lu not aligned with %lu\n",
+                       progname, stripe_size, prev_end);
+               return -EINVAL;
+       }
+
+       rc = llapi_layout_comp_extent_set(layout, prev_end, end);
+       if (rc) {
+               fprintf(stderr,
+                       "%s setstripe: cannot set component extent [%lu, %lu): %s\n",
+                       progname, prev_end, end, strerror(errno));
+               return rc;
+       }
+
+       return 0;
+}
+
+static inline bool arg_is_eof(char *arg)
+{
+       return !strncmp(arg, "-1", strlen("-1")) ||
+              !strncmp(arg, "EOF", strlen("EOF")) ||
+              !strncmp(arg, "eof", strlen("eof"));
+}
+
+/**
+ * lfs_mirror_alloc() - Allocate a mirror argument structure.
+ *
+ * Return: Valid mirror_args pointer on success and
+ *         NULL if memory allocation fails.
+ */
+static struct mirror_args *lfs_mirror_alloc(void)
+{
+       struct mirror_args *mirror = NULL;
+
+       while (1) {
+               mirror = calloc(1, sizeof(*mirror));
+               if (mirror != NULL)
+                       break;
+
+               sleep(1);
+       }
+
+       return mirror;
+}
+
+/**
+ * lfs_mirror_free() - Free memory allocated for a mirror argument
+ *                     structure.
+ * @mirror: Previously allocated mirror argument structure by
+ *         lfs_mirror_alloc().
+ *
+ * Free memory allocated for @mirror.
+ *
+ * Return: void.
+ */
+static void lfs_mirror_free(struct mirror_args *mirror)
+{
+       if (mirror->m_layout != NULL)
+               llapi_layout_free(mirror->m_layout);
+       free(mirror);
+}
+
+/**
+ * lfs_mirror_list_free() - Free memory allocated for a mirror list.
+ * @mirror_list: Previously allocated mirror list.
+ *
+ * Free memory allocated for @mirror_list.
+ *
+ * Return: void.
+ */
+static void lfs_mirror_list_free(struct mirror_args *mirror_list)
+{
+       struct mirror_args *next_mirror = NULL;
+
+       while (mirror_list != NULL) {
+               next_mirror = mirror_list->m_next;
+               lfs_mirror_free(mirror_list);
+               mirror_list = next_mirror;
+       }
+}
+
+enum {
+       LFS_POOL_OPT = 3,
+       LFS_COMP_COUNT_OPT,
+       LFS_COMP_START_OPT,
+       LFS_COMP_FLAGS_OPT,
+       LFS_COMP_DEL_OPT,
+       LFS_COMP_SET_OPT,
+       LFS_COMP_ADD_OPT,
+       LFS_COMP_NO_VERIFY_OPT,
+       LFS_PROJID_OPT,
+       LFS_MIRROR_FLAGS_OPT,
+       LFS_MIRROR_ID_OPT,
+       LFS_MIRROR_STATE_OPT,
+       LFS_LAYOUT_COPY,
+       LFS_MIRROR_INDEX_OPT,
+};
+
+/* functions */
+static int lfs_setstripe_internal(int argc, char **argv,
+                                 enum setstripe_origin opc)
+{
+       struct lfs_setstripe_args        lsa = { 0 };
+       struct llapi_stripe_param       *param = NULL;
+       struct find_param                migrate_mdt_param = {
+               .fp_max_depth = -1,
+               .fp_mdt_index = -1,
+       };
+       char                            *fname;
+       int                              result = 0;
+       int                              result2 = 0;
+       char                            *end;
+       int                              c;
+       int                              delete = 0;
+       unsigned long long               size_units = 1;
+       bool                             migrate_mode = false;
+       bool                             migrate_mdt_mode = false;
+       bool                             migration_block = false;
+       __u64                            migration_flags = 0;
+       __u32                            tgts[LOV_MAX_STRIPE_COUNT] = { 0 };
+       int                              comp_del = 0, comp_set = 0;
+       int                              comp_add = 0;
+       __u32                            comp_id = 0;
+       struct llapi_layout             *layout = NULL;
+       struct llapi_layout             **lpp = &layout;
+       bool                             mirror_mode = false;
+       bool                             has_m_file = false;
+       __u32                            mirror_count = 0;
+       enum mirror_flags                mirror_flags = 0;
+       struct mirror_args              *mirror_list = NULL;
+       struct mirror_args              *new_mirror = NULL;
+       struct mirror_args              *last_mirror = NULL;
+       __u16                            mirror_id = 0;
+       char                             cmd[PATH_MAX];
+       bool from_yaml = false;
+       bool from_copy = false;
+       char *template = NULL;
+
+       struct option long_opts[] = {
+/* find { .val = '0',  .name = "null",         .has_arg = no_argument }, */
+/* find        { .val = 'A',   .name = "atime",        .has_arg = required_argument }*/
+       /* --block is only valid in migrate mode */
+       { .val = 'b',   .name = "block",        .has_arg = no_argument },
+       { .val = LFS_COMP_ADD_OPT,
+                       .name = "comp-add",     .has_arg = no_argument },
+       { .val = LFS_COMP_ADD_OPT,
+                       .name = "component-add", .has_arg = no_argument },
+       { .val = LFS_COMP_DEL_OPT,
+                       .name = "comp-del",     .has_arg = no_argument },
+       { .val = LFS_COMP_DEL_OPT,
+                       .name = "component-del", .has_arg = no_argument },
+       { .val = LFS_COMP_FLAGS_OPT,
+                       .name = "comp-flags",   .has_arg = required_argument },
+       { .val = LFS_COMP_FLAGS_OPT,
+                       .name = "component-flags",
+                                               .has_arg = required_argument },
+       { .val = LFS_COMP_SET_OPT,
+                       .name = "comp-set",     .has_arg = no_argument },
+       { .val = LFS_COMP_SET_OPT,
+                       .name = "component-set",
+                                               .has_arg = no_argument},
+       { .val = LFS_COMP_NO_VERIFY_OPT,
+                       .name = "no-verify",    .has_arg = no_argument},
+       { .val = LFS_MIRROR_FLAGS_OPT,
+                       .name = "flags",        .has_arg = required_argument},
+       { .val = LFS_MIRROR_ID_OPT,
+                       .name = "mirror-id",    .has_arg = required_argument},
+       { .val = LFS_LAYOUT_COPY,
+                       .name = "copy",         .has_arg = required_argument},
+       { .val = 'c',   .name = "stripe-count", .has_arg = required_argument},
+       { .val = 'c',   .name = "stripe_count", .has_arg = required_argument},
+       { .val = 'c',   .name = "mdt-count",    .has_arg = required_argument},
+/* find        { .val = 'C',   .name = "ctime",        .has_arg = required_argument }*/
+       { .val = 'd',   .name = "delete",       .has_arg = no_argument},
+       { .val = 'd',   .name = "destroy",      .has_arg = no_argument},
+       /* --non-direct is only valid in migrate mode */
+       { .val = 'D',   .name = "non-direct",   .has_arg = no_argument },
+       { .val = 'E',   .name = "comp-end",     .has_arg = required_argument},
+       { .val = 'E',   .name = "component-end",
+                                               .has_arg = required_argument},
+       { .val = 'f',   .name = "file",         .has_arg = required_argument },
+/* find        { .val = 'F',   .name = "fid",          .has_arg = no_argument }, */
+/* find        { .val = 'g',   .name = "gid",          .has_arg = no_argument }, */
+/* find        { .val = 'G',   .name = "group",        .has_arg = required_argument }*/
+/* find        { .val = 'h',   .name = "help",         .has_arg = no_argument }, */
+       { .val = 'H',   .name = "mdt-hash",     .has_arg = required_argument},
+       { .val = 'i',   .name = "stripe-index", .has_arg = required_argument},
+       { .val = 'i',   .name = "stripe_index", .has_arg = required_argument},
+       { .val = 'I',   .name = "comp-id",      .has_arg = required_argument},
+       { .val = 'I',   .name = "component-id", .has_arg = required_argument},
+       { .val = 'L',   .name = "layout",       .has_arg = required_argument },
+       { .val = 'm',   .name = "mdt",          .has_arg = required_argument},
+       { .val = 'm',   .name = "mdt-index",    .has_arg = required_argument},
+       { .val = 'm',   .name = "mdt_index",    .has_arg = required_argument},
+       /* --non-block is only valid in migrate mode */
+       { .val = 'n',   .name = "non-block",    .has_arg = no_argument },
+       { .val = 'N',   .name = "mirror-count", .has_arg = optional_argument},
+       { .val = 'o',   .name = "ost",          .has_arg = required_argument },
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+       { .val = 'o',   .name = "ost-list",     .has_arg = required_argument },
+       { .val = 'o',   .name = "ost_list",     .has_arg = required_argument },
+#endif
+       { .val = 'p',   .name = "pool",         .has_arg = required_argument },
+/* find        { .val = 'P',   .name = "print",        .has_arg = no_argument }, */
+/* getstripe { .val = 'q', .name = "quiet",    .has_arg = no_argument }, */
+/* getstripe { .val = 'r', .name = "recursive",        .has_arg = no_argument }, */
+/* getstripe { .val = 'R', .name = "raw",      .has_arg = no_argument }, */
+       { .val = 'S',   .name = "stripe-size",  .has_arg = required_argument },
+       { .val = 'S',   .name = "stripe_size",  .has_arg = required_argument },
+/* find        { .val = 't',   .name = "type",         .has_arg = required_argument }*/
+/* dirstripe { .val = 'T', .name = "mdt-count", .has_arg = required_argument }*/
+/* find        { .val = 'u',   .name = "uid",          .has_arg = required_argument }*/
+/* find        { .val = 'U',   .name = "user",         .has_arg = required_argument }*/
+       /* --verbose is only valid in migrate mode */
+       { .val = 'v',   .name = "verbose",      .has_arg = no_argument},
+       { .val = 'y',   .name = "yaml",         .has_arg = required_argument },
+       { .name = NULL } };
+
+       setstripe_args_init(&lsa);
+
+       migrate_mode = (opc == SO_MIGRATE);
+       mirror_mode = (opc == SO_MIRROR_CREATE || opc == SO_MIRROR_EXTEND);
+
+       snprintf(cmd, sizeof(cmd), "%s %s", progname, argv[0]);
+       progname = cmd;
+       while ((c = getopt_long(argc, argv,
+                               "bc:dDE:f:H:i:I:m:N::no:p:L:s:S:vy:", long_opts,
+                               NULL)) >= 0) {
+               switch (c) {
+               case 0:
+                       /* Long options. */
+                       break;
+               case LFS_COMP_ADD_OPT:
+                       comp_add = 1;
+                       break;
+               case LFS_COMP_DEL_OPT:
+                       comp_del = 1;
+                       break;
+               case LFS_COMP_FLAGS_OPT:
+                       result = comp_str2flags(optarg, &lsa.lsa_comp_flags,
+                                               &lsa.lsa_comp_neg_flags);
+                       if (result != 0)
+                               goto usage_error;
+                       if (mirror_mode && lsa.lsa_comp_neg_flags) {
+                               fprintf(stderr, "%s: inverted flags are not supported\n",
+                                       progname);
+                               goto usage_error;
+                       }
+                       if (lsa.lsa_comp_neg_flags & LCME_FL_STALE) {
+                               fprintf(stderr,
+                                       "%s: cannot clear 'stale' flags from component. Please use lfs-mirror-resync(1) instead\n",
+                                       progname);
+                               result = -EINVAL;
+                               goto error;
+                       }
+
+                       break;
+               case LFS_COMP_SET_OPT:
+                       comp_set = 1;
+                       break;
+               case LFS_COMP_NO_VERIFY_OPT:
+                       mirror_flags |= MF_NO_VERIFY;
+                       break;
+               case LFS_MIRROR_ID_OPT:
+                       mirror_id = strtoul(optarg, &end, 0);
+                       if (*end != '\0' || mirror_id == 0) {
+                               fprintf(stderr,
+                                       "%s %s: invalid mirror ID '%s'\n",
+                                       progname, argv[0], optarg);
+                               goto usage_error;
+                       }
+                       break;
+               case LFS_MIRROR_FLAGS_OPT: {
+                       __u32 flags;
+
+                       if (!mirror_mode || !last_mirror) {
+                               fprintf(stderr, "error: %s: --flags must be specified with --mirror-count|-N option\n",
+                                       progname);
+                               goto usage_error;
+                       }
+
+                       result = comp_str2flags(optarg, &last_mirror->m_flags,
+                                               &flags);
+                       if (result != 0)
+                               goto usage_error;
+
+                       if (flags) {
+                               fprintf(stderr, "%s: inverted flags are not supported\n",
+                                       progname);
+                               result = -EINVAL;
+                               goto usage_error;
+                       }
+                       if (last_mirror->m_flags & ~LCME_USER_FLAGS) {
+                               fprintf(stderr,
+                                       "%s: unsupported mirror flags: %s\n",
+                                       progname, optarg);
+                               result = -EINVAL;
+                               goto error;
+                       }
+                       break;
+               }
+               case LFS_LAYOUT_COPY:
+                       from_copy = true;
+                       template = optarg;
+                       break;
+               case 'b':
+                       if (!migrate_mode) {
+                               fprintf(stderr,
+                                       "%s %s: -b|--block valid only for migrate command\n",
+                                       progname, argv[0]);
+                               goto usage_error;
+                       }
+                       migration_block = true;
+                       break;
+               case 'c':
+                       lsa.lsa_stripe_count = strtoul(optarg, &end, 0);
+                       if (*end != '\0') {
+                               fprintf(stderr,
+                                       "%s %s: invalid stripe count '%s'\n",
+                                       progname, argv[0], optarg);
+                               goto usage_error;
+                       }
+
+                       if (lsa.lsa_stripe_count == -1)
+                               lsa.lsa_stripe_count = LLAPI_LAYOUT_WIDE;
+                       break;
+               case 'd':
+                       /* delete the default striping pattern */
+                       delete = 1;
+                       if (opc == SO_MIRROR_SPLIT) {
+                               if (has_m_file) {
+                                       fprintf(stderr,
+                                             "%s %s: -d cannot used with -f\n",
+                                               progname, argv[0]);
+                                       goto usage_error;
+                               }
+                               mirror_flags |= MF_DESTROY;
+                       }
+                       break;
+               case 'D':
+                       if (!migrate_mode) {
+                               fprintf(stderr,
+                                       "%s %s: -D|--non-direct is valid "
+                                       "only for migrate command\n",
+                                       progname, argv[0]);
+                               goto usage_error;
+                       }
+                       migration_flags |= MIGRATION_NONDIRECT;
+                       break;
+               case 'E':
+                       if (lsa.lsa_comp_end != 0) {
+                               result = comp_args_to_layout(lpp, &lsa, true);
+                               if (result) {
+                                       fprintf(stderr,
+                                               "%s %s: invalid layout\n",
+                                               progname, argv[0]);
+                                       goto usage_error;
+                               }
+
+                               setstripe_args_init_inherit(&lsa);
+                       }
+
+                       if (arg_is_eof(optarg)) {
+                               lsa.lsa_comp_end = LUSTRE_EOF;
+                       } else {
+                               result = llapi_parse_size(optarg,
+                                                       &lsa.lsa_comp_end,
+                                                       &size_units, 0);
+                               if (result) {
+                                       fprintf(stderr,
+                                               "%s %s: invalid component end '%s'\n",
+                                               progname, argv[0], optarg);
+                                       goto usage_error;
+                               }
+                       }
+                       break;
+               case 'H':
+                       if (!migrate_mode) {
+                               fprintf(stderr, "--mdt-hash is valid only for migrate command\n");
+                               return CMD_HELP;
+                       }
+
+                       lsa.lsa_pattern = check_hashtype(optarg);
+                       if (lsa.lsa_pattern == 0) {
+                               fprintf(stderr,
+                                       "%s %s: bad stripe hash type '%s'\n",
+                                       progname, argv[0], optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+               case 'i':
+                       lsa.lsa_stripe_off = strtol(optarg, &end, 0);
+                       if (*end != '\0') {
+                               fprintf(stderr,
+                                       "%s %s: invalid stripe offset '%s'\n",
+                                       progname, argv[0], optarg);
+                               goto usage_error;
+                       }
+                       if (lsa.lsa_stripe_off == -1)
+                               lsa.lsa_stripe_off = LLAPI_LAYOUT_DEFAULT;
+                       break;
+               case 'I':
+                       comp_id = strtoul(optarg, &end, 0);
+                       if (*end != '\0' || comp_id == 0 ||
+                           comp_id > LCME_ID_MAX) {
+                               fprintf(stderr,
+                                       "%s %s: invalid component ID '%s'\n",
+                                       progname, argv[0], optarg);
+                               goto usage_error;
+                       }
+                       break;
+               case 'f':
+                       if (opc != SO_MIRROR_EXTEND && opc != SO_MIRROR_SPLIT) {
+                               fprintf(stderr,
+                                       "error: %s: invalid option: %s\n",
+                                       progname, argv[optopt + 1]);
+                               goto usage_error;
+                       }
+                       if (opc == SO_MIRROR_EXTEND) {
+                               if (last_mirror == NULL) {
+                                       fprintf(stderr,
+                               "error: %s: '-N' must exist in front of '%s'\n",
+                                               progname, argv[optopt + 1]);
+                                       goto usage_error;
+                               }
+                               last_mirror->m_file = optarg;
+                               last_mirror->m_count = 1;
+                       } else {
+                               /* mirror split */
+                               if (mirror_list == NULL)
+                                       mirror_list = lfs_mirror_alloc();
+                               mirror_list->m_file = optarg;
+                       }
+                       has_m_file = true;
+                       break;
+               case 'L':
+                       if (strcmp(argv[optind - 1], "mdt") == 0) {
+                               /* Can be only the first component */
+                               if (layout != NULL) {
+                                       result = -EINVAL;
+                                       fprintf(stderr, "error: 'mdt' layout "
+                                               "can be only the first one\n");
+                                       goto error;
+                               }
+                               if (lsa.lsa_comp_end > (1ULL << 30)) { /* 1Gb */
+                                       result = -EFBIG;
+                                       fprintf(stderr, "error: 'mdt' layout "
+                                               "size is too big\n");
+                                       goto error;
+                               }
+                               lsa.lsa_pattern = LLAPI_LAYOUT_MDT;
+                       } else if (strcmp(argv[optind - 1], "raid0") != 0) {
+                               result = -EINVAL;
+                               fprintf(stderr, "error: layout '%s' is "
+                                       "unknown, supported layouts are: "
+                                       "'mdt', 'raid0'\n", argv[optind]);
+                               goto error;
+                       }
+                       break;
+               case 'm':
+                       if (!migrate_mode) {
+                               fprintf(stderr,
+                                       "%s %s: -m|--mdt-index is valid only for migrate command\n",
+                                       progname, argv[0]);
+                               goto usage_error;
+                       }
+                       migrate_mdt_mode = true;
+                       lsa.lsa_nr_tgts = parse_targets(tgts,
+                                               sizeof(tgts) / sizeof(__u32),
+                                               lsa.lsa_nr_tgts, optarg);
+                       if (lsa.lsa_nr_tgts < 0) {
+                               fprintf(stderr,
+                                       "%s %s: invalid MDT target(s) '%s'\n",
+                                       progname, argv[0], optarg);
+                               return CMD_HELP;
+                       }
+
+                       lsa.lsa_tgts = tgts;
+                       if (lsa.lsa_stripe_off == LLAPI_LAYOUT_DEFAULT)
+                               lsa.lsa_stripe_off = tgts[0];
+                       break;
+               case 'n':
+                       if (!migrate_mode) {
+                               fprintf(stderr,
+                                       "%s %s: -n|--non-block valid only for migrate command\n",
+                                       progname, argv[0]);
+                               goto usage_error;
+                       }
+                       migration_flags |= MIGRATION_NONBLOCK;
+                       break;
+               case 'N':
+                       if (opc == SO_SETSTRIPE) {
+                               opc = SO_MIRROR_CREATE;
+                               mirror_mode = true;
+                       }
+                       mirror_count = 1;
+                       if (optarg != NULL) {
+                               mirror_count = strtoul(optarg, &end, 0);
+                               if (*end != '\0' || mirror_count == 0) {
+                                       fprintf(stderr,
+                                               "error: %s: bad mirror count: %s\n",
+                                               progname, optarg);
+                                       result = -EINVAL;
+                                       goto error;
+                               }
+                       }
+
+                       new_mirror = lfs_mirror_alloc();
+                       new_mirror->m_count = mirror_count;
+
+                       if (mirror_list == NULL)
+                               mirror_list = new_mirror;
+
+                       if (last_mirror != NULL) {
+                               /* wrap up last mirror */
+                               if (lsa.lsa_comp_end == 0)
+                                       lsa.lsa_comp_end = LUSTRE_EOF;
+
+                               result = comp_args_to_layout(lpp, &lsa, true);
+                               if (result) {
+                                       lfs_mirror_free(new_mirror);
+                                       goto error;
+                               }
+
+                               setstripe_args_init_inherit(&lsa);
+
+                               last_mirror->m_next = new_mirror;
+                       }
+
+                       last_mirror = new_mirror;
+                       lpp = &last_mirror->m_layout;
+                       break;
+               case 'o':
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+                       if (strcmp(argv[optind - 1], "--ost-list") == 0)
+                               fprintf(stderr, "warning: '--ost-list' is "
+                                       "deprecated, use '--ost' instead\n");
+#endif
+                       lsa.lsa_nr_tgts = parse_targets(tgts,
+                                               sizeof(tgts) / sizeof(__u32),
+                                               lsa.lsa_nr_tgts, optarg);
+                       if (lsa.lsa_nr_tgts < 0) {
+                               fprintf(stderr,
+                                       "%s %s: invalid OST target(s) '%s'\n",
+                                       progname, argv[0], optarg);
+                               goto usage_error;
+                       }
+
+                       lsa.lsa_tgts = tgts;
+                       if (lsa.lsa_stripe_off == LLAPI_LAYOUT_DEFAULT)
+                               lsa.lsa_stripe_off = tgts[0];
+                       break;
+               case 'p':
+                       if (optarg == NULL)
+                               goto usage_error;
+                       lsa.lsa_pool_name = optarg;
+
+                       if (strlen(lsa.lsa_pool_name) == 0 ||
+                           strncmp(lsa.lsa_pool_name, "none",
+                                   LOV_MAXPOOLNAME) == 0)
+                               lsa.lsa_pool_name = NULL;
+                       break;
+               case 'S':
+                       result = llapi_parse_size(optarg, &lsa.lsa_stripe_size,
+                                                 &size_units, 0);
+                       if (result) {
+                               fprintf(stderr,
+                                       "%s %s: invalid stripe size '%s'\n",
+                                       progname, argv[0], optarg);
+                               goto usage_error;
+                       }
+                       break;
+               case 'v':
+                       if (!migrate_mode) {
+                               fprintf(stderr,
+                                       "%s %s: -v|--verbose valid only for migrate command\n",
+                                       progname, argv[0]);
+                               goto usage_error;
+                       }
+                       migrate_mdt_param.fp_verbose = VERBOSE_DETAIL;
+                       migration_flags = MIGRATION_VERBOSE;
+                       break;
+               case 'y':
+                       from_yaml = true;
+                       template = optarg;
+                       break;
+               default:
+                       fprintf(stderr, "%s %s: unrecognized option '%s'\n",
+                               progname, argv[0], argv[optind - 1]);
+                       goto usage_error;
+               }
+       }
+
+       fname = argv[optind];
+
+       if (optind == argc) {
+               fprintf(stderr, "%s %s: FILE must be specified\n",
+                       progname, argv[0]);
+               goto usage_error;
+       }
+
+       if (mirror_mode && mirror_count == 0) {
+               fprintf(stderr,
+                       "error: %s: --mirror-count|-N option is required\n",
+                       progname);
+               result = -EINVAL;
+               goto error;
+       }
+
+       if (mirror_mode) {
+               if (lsa.lsa_comp_end == 0)
+                       lsa.lsa_comp_end = LUSTRE_EOF;
+       }
+
+       if (lsa.lsa_comp_end != 0) {
+               result = comp_args_to_layout(lpp, &lsa, true);
+               if (result)
+                       goto error;
+       }
+
+       if (mirror_flags & MF_NO_VERIFY) {
+               if (opc != SO_MIRROR_EXTEND) {
+                       fprintf(stderr,
+                               "error: %s: --no-verify is valid only for lfs mirror extend command\n",
+                               progname);
+                       result = -EINVAL;
+                       goto error;
+               } else if (!has_m_file) {
+                       fprintf(stderr,
+                               "error: %s: --no-verify must be specified with -f <victim_file> option\n",
+                               progname);
+                       result = -EINVAL;
+                       goto error;
+               }
+       }
+
+       /* Only LCME_FL_INIT flags is used in PFL, and it shouldn't be
+        * altered by user space tool, so we don't need to support the
+        * --component-set for this moment. */
+       if (comp_set && !comp_id) {
+               fprintf(stderr, "%s %s: --component-set doesn't have component-id set\n",
+                       progname, argv[0]);
+               goto usage_error;
+       }
+
+       if ((delete + comp_set + comp_del + comp_add) > 1) {
+               fprintf(stderr,
+                       "%s %s: options --component-set, --component-del, --component-add and -d are mutually exclusive\n",
+                       progname, argv[0]);
+               goto usage_error;
+       }
+
+       if (delete && (setstripe_args_specified(&lsa) || comp_id != 0 ||
+                      lsa.lsa_comp_flags != 0 || layout != NULL)) {
+               fprintf(stderr,
+                       "%s %s: option -d is mutually exclusive with -s, -c, -o, -p, -I, -F and -E options\n",
+                       progname, argv[0]);
+               goto usage_error;
+       }
+
+       if ((comp_set || comp_del) &&
+           (setstripe_args_specified(&lsa) || layout != NULL)) {
+               fprintf(stderr,
+                       "%s %s: options --component-del and --component-set are mutually exclusive when used with -c, -E, -o, -p, or -s\n",
+                       progname, argv[0]);
+               goto usage_error;
+       }
+
+       if (comp_del && comp_id != 0 && lsa.lsa_comp_flags != 0) {
+               fprintf(stderr,
+                       "%s %s: options -I and -F are mutually exclusive when used with --component-del\n",
+                       progname, argv[0]);
+               goto usage_error;
+       }
+
+       if (comp_add || comp_del) {
+               struct stat st;
+
+               result = lstat(fname, &st);
+               if (result == 0 && S_ISDIR(st.st_mode)) {
+                       fprintf(stderr,
+                               "%s setstripe: cannot use --component-add or --component-del for directory\n",
+                               progname);
+                       goto usage_error;
+               }
+
+               if (mirror_mode) {
+                       fprintf(stderr, "error: %s: can't use --component-add "
+                               "or --component-del for mirror operation\n",
+                               progname);
+                       goto usage_error;
+               }
+       }
+
+       if (comp_add) {
+               if (layout == NULL) {
+                       fprintf(stderr,
+                               "%s %s: option -E must be specified with --component-add\n",
+                               progname, argv[0]);
+                       goto usage_error;
+               }
+
+               result = adjust_first_extent(fname, layout);
+               if (result == -ENODATA)
+                       comp_add = 0;
+               else if (result != 0)
+                       goto error;
+       }
+
+       if (from_yaml && from_copy) {
+               fprintf(stderr,
+                       "%s: can't specify --yaml and --copy together\n",
+                       progname);
+               goto error;
+       }
+
+       if ((from_yaml || from_copy) &&
+           (setstripe_args_specified(&lsa) || layout != NULL)) {
+               fprintf(stderr, "error: %s: can't specify --yaml with "
+                       "-c, -S, -i, -o, -p or -E options.\n",
+                       argv[0]);
+               goto error;
+       }
+
+       if ((migration_flags & MIGRATION_NONBLOCK) && migration_block) {
+               fprintf(stderr,
+                       "%s %s: options --non-block and --block are mutually exclusive\n",
+                       progname, argv[0]);
+               goto usage_error;
+       }
+
+       if (!comp_del && !comp_set && (opc != SO_MIRROR_SPLIT) &&
+           comp_id != 0) {
+               fprintf(stderr,
+               "%s %s: option -I can only be used with --component-del or --component-set or lfs mirror split\n",
+                       progname, argv[0]);
+               goto usage_error;
+       }
+
+       if (migrate_mdt_mode) {
+               struct lmv_user_md *lmu;
+
+               /* initialize migrate mdt parameters */
+               lmu = calloc(1, lmv_user_md_size(lsa.lsa_nr_tgts,
+                                                LMV_USER_MAGIC_SPECIFIC));
+               if (!lmu) {
+                       fprintf(stderr,
+                               "%s %s: cannot allocate memory for lmv_user_md: %s\n",
+                               progname, argv[0], strerror(ENOMEM));
+                       result = -ENOMEM;
+                       goto error;
+               }
+               if (lsa.lsa_stripe_count != LLAPI_LAYOUT_DEFAULT)
+                       lmu->lum_stripe_count = lsa.lsa_stripe_count;
+               if (lsa.lsa_stripe_off == LLAPI_LAYOUT_DEFAULT) {
+                       fprintf(stderr,
+                               "%s %s: migrate should specify MDT index\n",
+                               progname, argv[0]);
+                       free(lmu);
+                       goto usage_error;
+               }
+               lmu->lum_stripe_offset = lsa.lsa_stripe_off;
+               if (lsa.lsa_pattern != LLAPI_LAYOUT_RAID0)
+                       lmu->lum_hash_type = lsa.lsa_pattern;
+               else
+                       lmu->lum_hash_type = LMV_HASH_TYPE_FNV_1A_64;
+               if (lsa.lsa_pool_name)
+                       strncpy(lmu->lum_pool_name, lsa.lsa_pool_name,
+                               sizeof(lmu->lum_pool_name));
+               if (lsa.lsa_nr_tgts > 1) {
+                       int i;
+
+                       if (lsa.lsa_stripe_count > 0 &&
+                           lsa.lsa_stripe_count != LLAPI_LAYOUT_DEFAULT &&
+                           lsa.lsa_stripe_count != lsa.lsa_nr_tgts) {
+                               fprintf(stderr,
+                                       "error: %s: stripe count %lld doesn't match the number of MDTs: %d\n",
+                                       progname, lsa.lsa_stripe_count,
+                                               lsa.lsa_nr_tgts);
+                               free(lmu);
+                               goto usage_error;
+                       }
+
+                       lmu->lum_magic = LMV_USER_MAGIC_SPECIFIC;
+                       lmu->lum_stripe_count = lsa.lsa_nr_tgts;
+                       for (i = 0; i < lsa.lsa_nr_tgts; i++)
+                               lmu->lum_objects[i].lum_mds = lsa.lsa_tgts[i];
+               } else {
+                       lmu->lum_magic = LMV_USER_MAGIC;
+               }
+
+               migrate_mdt_param.fp_lmv_md = lmu;
+               migrate_mdt_param.fp_migrate = 1;
+       } else if (layout == NULL) {
+               /* initialize stripe parameters */
+               param = calloc(1, offsetof(typeof(*param),
+                              lsp_osts[lsa.lsa_nr_tgts]));
+               if (param == NULL) {
+                       fprintf(stderr,
+                               "%s %s: cannot allocate memory for parameters: %s\n",
+                               progname, argv[0], strerror(ENOMEM));
+                       result = -ENOMEM;
+                       goto error;
+               }
+
+               if (lsa.lsa_stripe_size != LLAPI_LAYOUT_DEFAULT)
+                       param->lsp_stripe_size = lsa.lsa_stripe_size;
+               if (lsa.lsa_stripe_count != LLAPI_LAYOUT_DEFAULT) {
+                       if (lsa.lsa_stripe_count == LLAPI_LAYOUT_WIDE)
+                               param->lsp_stripe_count = -1;
+                       else
+                               param->lsp_stripe_count = lsa.lsa_stripe_count;
+               }
+               if (lsa.lsa_stripe_off == LLAPI_LAYOUT_DEFAULT)
+                       param->lsp_stripe_offset = -1;
+               else
+                       param->lsp_stripe_offset = lsa.lsa_stripe_off;
+               param->lsp_pool = lsa.lsa_pool_name;
+               param->lsp_is_specific = false;
+               if (lsa.lsa_nr_tgts > 0) {
+                       if (lsa.lsa_stripe_count > 0 &&
+                           lsa.lsa_stripe_count != LLAPI_LAYOUT_DEFAULT &&
+                           lsa.lsa_stripe_count != LLAPI_LAYOUT_WIDE &&
+                           lsa.lsa_nr_tgts != lsa.lsa_stripe_count) {
+                               fprintf(stderr, "error: %s: stripe count %lld "
+                                       "doesn't match the number of OSTs: %d\n"
+                                       , argv[0], lsa.lsa_stripe_count,
+                                       lsa.lsa_nr_tgts);
+                               free(param);
+                               goto usage_error;
+                       }
+
+                       param->lsp_is_specific = true;
+                       param->lsp_stripe_count = lsa.lsa_nr_tgts;
+                       memcpy(param->lsp_osts, tgts,
+                              sizeof(*tgts) * lsa.lsa_nr_tgts);
+               }
+       }
+
+       if (from_yaml) {
+               /* generate a layout from a YAML template */
+               result = lfs_comp_create_from_yaml(template, &layout,
+                                                  &lsa, tgts);
+               if (result) {
+                       fprintf(stderr, "error: %s: can't create composite "
+                               "layout from template file %s\n",
+                               argv[0], template);
+                       goto error;
+               }
+       } else if (from_copy) {
+               layout = llapi_layout_get_by_path(template, 0);
+               if (layout == NULL) {
+                       fprintf(stderr,
+                           "%s: can't create composite layout from file %s.\n",
+                               progname, template);
+                       goto error;
+               }
+       }
+
+       for (fname = argv[optind]; fname != NULL; fname = argv[++optind]) {
+               if (migrate_mdt_mode) {
+                       result = llapi_migrate_mdt(fname, &migrate_mdt_param);
+               } else if (migrate_mode) {
+                       result = lfs_migrate(fname, migration_flags, param,
+                                            layout);
+               } else if (comp_set != 0) {
+                       result = lfs_component_set(fname, comp_id,
+                                                  lsa.lsa_comp_flags,
+                                                  lsa.lsa_comp_neg_flags);
+               } else if (comp_del != 0) {
+                       result = lfs_component_del(fname, comp_id,
+                                                  lsa.lsa_comp_flags,
+                                                  lsa.lsa_comp_neg_flags);
+               } else if (comp_add != 0) {
+                       result = lfs_component_add(fname, layout);
+               } else if (opc == SO_MIRROR_CREATE) {
+                       result = mirror_create(fname, mirror_list);
+               } else if (opc == SO_MIRROR_EXTEND) {
+                       result = mirror_extend(fname, mirror_list,
+                                              mirror_flags);
+               } else if (opc == SO_MIRROR_SPLIT) {
+                       if (mirror_id == 0 && comp_id == 0) {
+                               fprintf(stderr,
+                       "%s %s: no mirror id or component id is specified\n",
+                                       progname, argv[0]);
+                               goto usage_error;
+                       }
+                       if (mirror_id != 0)
+                               comp_id = mirror_id;
+                       else
+                               mirror_flags |= MF_COMP_ID;
+                       result = mirror_split(fname, comp_id, mirror_flags,
+                                             has_m_file ? mirror_list->m_file :
+                                             NULL);
+               } else if (layout != NULL) {
+                       result = lfs_component_create(fname, O_CREAT | O_WRONLY,
+                                                     0666, layout);
+                       if (result >= 0) {
+                               close(result);
+                               result = 0;
+                       }
+               } else {
+                       result = llapi_file_open_param(fname,
+                                                      O_CREAT | O_WRONLY,
+                                                      0666, param);
+                       if (result >= 0) {
+                               close(result);
+                               result = 0;
+                       }
+               }
+               if (result) {
+                       /* Save the first error encountered. */
+                       if (result2 == 0)
+                               result2 = result;
+                       continue;
+               }
+       }
+
+       free(param);
+       free(migrate_mdt_param.fp_lmv_md);
+       llapi_layout_free(layout);
+       lfs_mirror_list_free(mirror_list);
+       return result2;
+usage_error:
+       result = CMD_HELP;
+error:
+       llapi_layout_free(layout);
+       lfs_mirror_list_free(mirror_list);
+       return result;
+}
+
+static int lfs_poollist(int argc, char **argv)
+{
+        if (argc != 2)
+                return CMD_HELP;
+
+        return llapi_poollist(argv[1]);
+}
+
+static time_t set_time(struct find_param *param, time_t *time, time_t *set,
+                      char *str)
+{
+       long long t = 0;
+       int res = 0;
+       char *endptr = "AD";
+       char *timebuf;
+
+       if (str[0] == '+')
+               res = 1;
+       else if (str[0] == '-')
+               res = -1;
+
+       if (res)
+               str++;
+
+       for (timebuf = str; *endptr && *(endptr + 1); timebuf = endptr + 1) {
+               long long val = strtoll(timebuf, &endptr, 0);
+               int unit = 1;
+
+               switch (*endptr) {
+               case  'y':
+                       unit *= 52; /* 52 weeks + 1 day below */
+               case  'w':      /* fallthrough */
+                       unit *= 7;
+               case '\0': /* days are default unit if none used */
+               case  'd':      /* fallthrough */
+                       unit = (unit + (*endptr == 'y')) * 24;
+               case  'h':      /* fallthrough */
+                       unit *= 60;
+               case  'm':      /* fallthrough */
+                       unit *= 60;
+               case  's':      /* fallthrough */
+                       break;
+                       /* don't need to multiply by 1 for seconds */
+               default:
+                       fprintf(stderr,
+                               "%s find: bad time string '%s': %s\n",
+                               progname, timebuf, strerror(EINVAL));
+                       return LONG_MAX;
+               }
+
+               if (param->fp_time_margin == 0 ||
+                   (*endptr && unit < param->fp_time_margin))
+                       param->fp_time_margin = unit;
+
+               t += val * unit;
+       }
+       if (*time < t) {
+               if (res != 0)
+                       str--;
+               fprintf(stderr, "%s find: bad time '%s': too large\n",
+                       progname, str);
+               return LONG_MAX;
+       }
+
+       *set = *time - t;
+
+       return res;
+}
+
+static int name2uid(unsigned int *id, const char *name)
+{
+       struct passwd *passwd;
+
+       passwd = getpwnam(name);
+       if (passwd == NULL)
+               return -ENOENT;
+       *id = passwd->pw_uid;
+
+       return 0;
+}
+
+static int name2gid(unsigned int *id, const char *name)
+{
+       struct group *group;
+
+       group = getgrnam(name);
+       if (group == NULL)
+               return -ENOENT;
+       *id = group->gr_gid;
+
+       return 0;
+}
+
+static inline int name2projid(unsigned int *id, const char *name)
+{
+       return -ENOTSUP;
+}
+
+static int uid2name(char **name, unsigned int id)
+{
+       struct passwd *passwd;
+
+       passwd = getpwuid(id);
+       if (passwd == NULL)
+               return -ENOENT;
+       *name = passwd->pw_name;
+
+       return 0;
+}
+
+static inline int gid2name(char **name, unsigned int id)
+{
+       struct group *group;
+
+       group = getgrgid(id);
+       if (group == NULL)
+               return -ENOENT;
+       *name = group->gr_name;
+
+       return 0;
+}
+
+static int name2layout(__u32 *layout, char *name)
+{
+       char *ptr, *layout_name;
+
+       *layout = 0;
+       for (ptr = name; ; ptr = NULL) {
+               layout_name = strtok(ptr, ",");
+               if (layout_name == NULL)
+                       break;
+               if (strcmp(layout_name, "released") == 0)
+                       *layout |= LOV_PATTERN_F_RELEASED;
+               else if (strcmp(layout_name, "raid0") == 0)
+                       *layout |= LOV_PATTERN_RAID0;
+               else if (strcmp(layout_name, "mdt") == 0)
+                       *layout |= LOV_PATTERN_MDT;
+               else
+                       return -1;
+       }
+       return 0;
+}
+
+static int lfs_find(int argc, char **argv)
+{
+       int c, rc;
+       int ret = 0;
+       time_t t;
+       struct find_param param = {
+               .fp_max_depth = -1,
+               .fp_quiet = 1,
+               .fp_time_margin = 24 * 60 * 60,
+       };
+        struct option long_opts[] = {
+       { .val = 'A',   .name = "atime",        .has_arg = required_argument },
+       { .val = 'b',   .name = "blocks",       .has_arg = required_argument },
+       { .val = LFS_COMP_COUNT_OPT,
+                       .name = "comp-count",   .has_arg = required_argument },
+       { .val = LFS_COMP_COUNT_OPT,
+                       .name = "component-count",
+                                               .has_arg = required_argument },
+       { .val = LFS_COMP_FLAGS_OPT,
+                       .name = "comp-flags",   .has_arg = required_argument },
+       { .val = LFS_COMP_FLAGS_OPT,
+                       .name = "component-flags",
+                                               .has_arg = required_argument },
+       { .val = LFS_COMP_START_OPT,
+                       .name = "comp-start",   .has_arg = required_argument },
+       { .val = LFS_COMP_START_OPT,
+                       .name = "component-start",
+                                               .has_arg = required_argument },
+       { .val = LFS_MIRROR_STATE_OPT,
+                       .name = "mirror-state", .has_arg = required_argument },
+       { .val = 'c',   .name = "stripe-count", .has_arg = required_argument },
+       { .val = 'c',   .name = "stripe_count", .has_arg = required_argument },
+       { .val = 'C',   .name = "ctime",        .has_arg = required_argument },
+/* getstripe { .val = 'd', .name = "directory",        .has_arg = no_argument }, */
+       { .val = 'D',   .name = "maxdepth",     .has_arg = required_argument },
+       { .val = 'E',   .name = "comp-end",     .has_arg = required_argument },
+       { .val = 'E',   .name = "component-end",
+                                               .has_arg = required_argument },
+/* find        { .val = 'F',   .name = "fid",          .has_arg = no_argument }, */
+       { .val = 'g',   .name = "gid",          .has_arg = required_argument },
+       { .val = 'G',   .name = "group",        .has_arg = required_argument },
+       { .val = 'H',   .name = "mdt-hash",     .has_arg = required_argument },
+       { .val = 'i',   .name = "stripe-index", .has_arg = required_argument },
+       { .val = 'i',   .name = "stripe_index", .has_arg = required_argument },
+/* getstripe { .val = 'I', .name = "comp-id",  .has_arg = required_argument }*/
+       { .val = 'L',   .name = "layout",       .has_arg = required_argument },
+       { .val = 'm',   .name = "mdt",          .has_arg = required_argument },
+       { .val = 'm',   .name = "mdt-index",    .has_arg = required_argument },
+       { .val = 'm',   .name = "mdt_index",    .has_arg = required_argument },
+       { .val = 'M',   .name = "mtime",        .has_arg = required_argument },
+       { .val = 'n',   .name = "name",         .has_arg = required_argument },
+       { .val = 'N',   .name = "mirror-count", .has_arg = required_argument },
+/* find        { .val = 'o'    .name = "or", .has_arg = no_argument }, like find(1) */
+       { .val = 'O',   .name = "obd",          .has_arg = required_argument },
+       { .val = 'O',   .name = "ost",          .has_arg = required_argument },
+       /* no short option for pool yet, can be 'p' after 2.18 */
+       { .val = LFS_POOL_OPT,
+                       .name = "pool",         .has_arg = required_argument },
+       { .val = '0',   .name = "print0",       .has_arg = no_argument },
+       { .val = 'P',   .name = "print",        .has_arg = no_argument },
+       { .val = LFS_PROJID_OPT,
+                       .name = "projid",       .has_arg = required_argument },
+/* getstripe { .val = 'q', .name = "quiet",    .has_arg = no_argument }, */
+/* getstripe { .val = 'r', .name = "recursive",        .has_arg = no_argument }, */
+/* getstripe { .val = 'R', .name = "raw",      .has_arg = no_argument }, */
+       { .val = 's',   .name = "size",         .has_arg = required_argument },
+       { .val = 'S',   .name = "stripe-size",  .has_arg = required_argument },
+       { .val = 'S',   .name = "stripe_size",  .has_arg = required_argument },
+       { .val = 't',   .name = "type",         .has_arg = required_argument },
+       { .val = 'T',   .name = "mdt-count",    .has_arg = required_argument },
+       { .val = 'u',   .name = "uid",          .has_arg = required_argument },
+       { .val = 'U',   .name = "user",         .has_arg = required_argument },
+/* getstripe { .val = 'v', .name = "verbose",  .has_arg = no_argument }, */
+/* getstripe { .val = 'y', .name = "yaml",     .has_arg = no_argument }, */
+       { .val = 'z',   .name = "lazy",         .has_arg = no_argument },
+       { .name = NULL } };
+        int pathstart = -1;
+        int pathend = -1;
+        int neg_opt = 0;
+        time_t *xtime;
+        int *xsign;
+        int isoption;
+        char *endptr;
+
+        time(&t);
+
+       /* when getopt_long_only() hits '!' it returns 1, puts "!" in optarg */
+       while ((c = getopt_long_only(argc, argv,
+                       "-0A:b:c:C:D:E:g:G:H:i:L:m:M:n:N:O:Ppqrs:S:t:T:u:U:vz",
+                       long_opts, NULL)) >= 0) {
+                xtime = NULL;
+                xsign = NULL;
+                if (neg_opt)
+                        --neg_opt;
+                /* '!' is part of option */
+                /* when getopt_long_only() finds a string which is not
+                 * an option nor a known option argument it returns 1
+                 * in that case if we already have found pathstart and pathend
+                 * (i.e. we have the list of pathnames),
+                 * the only supported value is "!"
+                 */
+                isoption = (c != 1) || (strcmp(optarg, "!") == 0);
+                if (!isoption && pathend != -1) {
+                        fprintf(stderr, "err: %s: filename|dirname must either "
+                                        "precede options or follow options\n",
+                                        argv[0]);
+                        ret = CMD_HELP;
+                        goto err;
+                }
+                if (!isoption && pathstart == -1)
+                        pathstart = optind - 1;
+                if (isoption && pathstart != -1 && pathend == -1)
+                        pathend = optind - 2;
+                switch (c) {
+                case 0:
+                        /* Long options. */
+                        break;
+                case 1:
+                        /* unknown; opt is "!" or path component,
+                         * checking done above.
+                         */
+                        if (strcmp(optarg, "!") == 0)
+                                neg_opt = 2;
+                        break;
+               case 'A':
+                       xtime = &param.fp_atime;
+                       xsign = &param.fp_asign;
+                       param.fp_exclude_atime = !!neg_opt;
+                       /* no break, this falls through to 'C' for ctime */
+               case 'C':
+                       if (c == 'C') {
+                               xtime = &param.fp_ctime;
+                               xsign = &param.fp_csign;
+                               param.fp_exclude_ctime = !!neg_opt;
+                       }
+                       /* no break, this falls through to 'M' for mtime */
+               case 'M':
+                       if (c == 'M') {
+                               xtime = &param.fp_mtime;
+                               xsign = &param.fp_msign;
+                               param.fp_exclude_mtime = !!neg_opt;
+                       }
+                       rc = set_time(&param, &t, xtime, optarg);
+                       if (rc == LONG_MAX) {
+                               ret = -1;
+                               goto err;
+                       }
+                       if (rc)
+                               *xsign = rc;
+                       break;
+               case 'b':
+                       if (optarg[0] == '+') {
+                               param.fp_blocks_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param.fp_blocks_sign =  1;
+                               optarg++;
+                       }
+
+                       param.fp_blocks_units = 1024;
+                       ret = llapi_parse_size(optarg, &param.fp_blocks,
+                                              &param.fp_blocks_units, 0);
+                       if (ret) {
+                               fprintf(stderr, "error: bad blocks '%s'\n",
+                                       optarg);
+                               goto err;
+                       }
+                       param.fp_check_blocks = 1;
+                       param.fp_exclude_blocks = !!neg_opt;
+                       break;
+               case LFS_COMP_COUNT_OPT:
+                       if (optarg[0] == '+') {
+                               param.fp_comp_count_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param.fp_comp_count_sign =  1;
+                               optarg++;
+                       }
+
+                       param.fp_comp_count = strtoul(optarg, &endptr, 0);
+                       if (*endptr != '\0') {
+                               fprintf(stderr, "error: bad component count "
+                                       "'%s'\n", optarg);
+                               goto err;
+                       }
+                       param.fp_check_comp_count = 1;
+                       param.fp_exclude_comp_count = !!neg_opt;
+                       break;
+               case LFS_COMP_FLAGS_OPT:
+                       rc = comp_str2flags(optarg, &param.fp_comp_flags,
+                                           &param.fp_comp_neg_flags);
+                       if (rc) {
+                               fprintf(stderr, "error: bad component flags "
+                                       "'%s'\n", optarg);
+                               goto err;
+                       }
+                       param.fp_check_comp_flags = 1;
+                       if (neg_opt) {
+                               __u32 flags = param.fp_comp_neg_flags;
+                               param.fp_comp_neg_flags = param.fp_comp_flags;
+                               param.fp_comp_flags = flags;
+                       }
+                       break;
+               case LFS_COMP_START_OPT:
+                       if (optarg[0] == '+') {
+                               param.fp_comp_start_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param.fp_comp_start_sign =  1;
+                               optarg++;
+                       }
+
+                       rc = llapi_parse_size(optarg, &param.fp_comp_start,
+                                             &param.fp_comp_start_units, 0);
+                       if (rc) {
+                               fprintf(stderr, "error: bad component start "
+                                       "'%s'\n", optarg);
+                               goto err;
+                       }
+                       param.fp_check_comp_start = 1;
+                       param.fp_exclude_comp_start = !!neg_opt;
+                       break;
+               case LFS_MIRROR_STATE_OPT:
+                       rc = mirror_str2state(optarg, &param.fp_mirror_state,
+                                             &param.fp_mirror_neg_state);
+                       if (rc) {
+                               fprintf(stderr,
+                                       "error: bad mirrored file state '%s'\n",
+                                       optarg);
+                               goto err;
+                       }
+                       param.fp_check_mirror_state = 1;
+                       if (neg_opt) {
+                               __u16 state = param.fp_mirror_neg_state;
+                               param.fp_mirror_neg_state =
+                                       param.fp_mirror_state;
+                               param.fp_mirror_state = state;
+                       }
+                       break;
+                case 'c':
+                        if (optarg[0] == '+') {
+                               param.fp_stripe_count_sign = -1;
+                                optarg++;
+                        } else if (optarg[0] == '-') {
+                               param.fp_stripe_count_sign =  1;
+                                optarg++;
+                        }
+
+                       param.fp_stripe_count = strtoul(optarg, &endptr, 0);
+                        if (*endptr != '\0') {
+                                fprintf(stderr,"error: bad stripe_count '%s'\n",
+                                        optarg);
+                                ret = -1;
+                                goto err;
+                        }
+                       param.fp_check_stripe_count = 1;
+                       param.fp_exclude_stripe_count = !!neg_opt;
+                        break;
+               case 'D':
+                       param.fp_max_depth = strtol(optarg, 0, 0);
+                       break;
+               case 'E':
+                       if (optarg[0] == '+') {
+                               param.fp_comp_end_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param.fp_comp_end_sign =  1;
+                               optarg++;
+                       }
+
+                       if (arg_is_eof(optarg)) {
+                               param.fp_comp_end = LUSTRE_EOF;
+                               param.fp_comp_end_units = 1;
+                               rc = 0;
+                       } else {
+                               rc = llapi_parse_size(optarg,
+                                               &param.fp_comp_end,
+                                               &param.fp_comp_end_units, 0);
+                       }
+                       if (rc) {
+                               fprintf(stderr, "error: bad component end "
                                        "'%s'\n", optarg);
                                goto err;
                        }
-                       param.fp_check_comp_flags = 1;
-                       param.fp_exclude_comp_flags = !!neg_opt;
+                       param.fp_check_comp_end = 1;
+                       param.fp_exclude_comp_end = !!neg_opt;
+                       break;
+               case 'g':
+               case 'G':
+                       rc = name2gid(&param.fp_gid, optarg);
+                       if (rc) {
+                               param.fp_gid = strtoul(optarg, &endptr, 10);
+                                if (*endptr != '\0') {
+                                        fprintf(stderr, "Group/GID: %s cannot "
+                                                "be found.\n", optarg);
+                                        ret = -1;
+                                        goto err;
+                                }
+                        }
+                       param.fp_exclude_gid = !!neg_opt;
+                       param.fp_check_gid = 1;
+                        break;
+               case 'H':
+                       param.fp_hash_type = check_hashtype(optarg);
+                       if (param.fp_hash_type == 0) {
+                               fprintf(stderr, "error: bad hash_type '%s'\n",
+                                       optarg);
+                               ret = -1;
+                               goto err;
+                       }
+                       param.fp_check_hash_type = 1;
+                       param.fp_exclude_hash_type = !!neg_opt;
+                       break;
+               case 'L':
+                       ret = name2layout(&param.fp_layout, optarg);
+                       if (ret)
+                               goto err;
+                       param.fp_exclude_layout = !!neg_opt;
+                       param.fp_check_layout = 1;
+                       break;
+               case 'u':
+               case 'U':
+                       rc = name2uid(&param.fp_uid, optarg);
+                       if (rc) {
+                               param.fp_uid = strtoul(optarg, &endptr, 10);
+                               if (*endptr != '\0') {
+                                       fprintf(stderr, "User/UID: %s cannot "
+                                                "be found.\n", optarg);
+                                        ret = -1;
+                                        goto err;
+                                }
+                        }
+                       param.fp_exclude_uid = !!neg_opt;
+                       param.fp_check_uid = 1;
+                        break;
+                case 'n':
+                       param.fp_pattern = (char *)optarg;
+                       param.fp_exclude_pattern = !!neg_opt;
+                        break;
+               case 'N':
+                       if (optarg[0] == '+') {
+                               param.fp_mirror_count_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param.fp_mirror_count_sign =  1;
+                               optarg++;
+                       }
+
+                       param.fp_mirror_count = strtoul(optarg, &endptr, 0);
+                       if (*endptr != '\0') {
+                               fprintf(stderr,
+                                       "error: bad mirror count '%s'\n",
+                                       optarg);
+                               goto err;
+                       }
+                       param.fp_check_mirror_count = 1;
+                       param.fp_exclude_mirror_count = !!neg_opt;
+                       break;
+                case 'm':
+                case 'i':
+                case 'O': {
+                        char *buf, *token, *next, *p;
+                        int len = 1;
+                        void *tmp;
+
+                        buf = strdup(optarg);
+                        if (buf == NULL) {
+                                ret = -ENOMEM;
+                                goto err;
+                        }
+
+                       param.fp_exclude_obd = !!neg_opt;
+
+                        token = buf;
+                        while (token && *token) {
+                                token = strchr(token, ',');
+                                if (token) {
+                                        len++;
+                                        token++;
+                                }
+                        }
+                        if (c == 'm') {
+                               param.fp_exclude_mdt = !!neg_opt;
+                               param.fp_num_alloc_mdts += len;
+                               tmp = realloc(param.fp_mdt_uuid,
+                                             param.fp_num_alloc_mdts *
+                                             sizeof(*param.fp_mdt_uuid));
+                               if (tmp == NULL) {
+                                       ret = -ENOMEM;
+                                       goto err_free;
+                               }
+
+                               param.fp_mdt_uuid = tmp;
+                        } else {
+                               param.fp_exclude_obd = !!neg_opt;
+                               param.fp_num_alloc_obds += len;
+                               tmp = realloc(param.fp_obd_uuid,
+                                             param.fp_num_alloc_obds *
+                                             sizeof(*param.fp_obd_uuid));
+                               if (tmp == NULL) {
+                                       ret = -ENOMEM;
+                                       goto err_free;
+                               }
+
+                               param.fp_obd_uuid = tmp;
+                        }
+                        for (token = buf; token && *token; token = next) {
+                               struct obd_uuid *puuid;
+                               if (c == 'm') {
+                                       puuid =
+                                       &param.fp_mdt_uuid[param.fp_num_mdts++];
+                               } else {
+                                       puuid =
+                                       &param.fp_obd_uuid[param.fp_num_obds++];
+                               }
+                                p = strchr(token, ',');
+                                next = 0;
+                                if (p) {
+                                        *p = 0;
+                                        next = p+1;
+                                }
+
+                               if (strlen(token) > sizeof(puuid->uuid) - 1) {
+                                       ret = -E2BIG;
+                                       goto err_free;
+                               }
+
+                               strncpy(puuid->uuid, token,
+                                       sizeof(puuid->uuid));
+                       }
+err_free:
+                       if (buf)
+                               free(buf);
+                       break;
+               }
+#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 18, 53, 0)
+               case 'p':
+#endif
+               case LFS_POOL_OPT:
+                       if (strlen(optarg) > LOV_MAXPOOLNAME) {
+                               fprintf(stderr,
+                                       "Pool name %s is too long (max %d)\n",
+                                       optarg, LOV_MAXPOOLNAME);
+                               ret = -1;
+                               goto err;
+                       }
+                       /*
+                        * We do check for empty pool because empty pool
+                        * is used to find V1 LOV attributes
+                        */
+                       strncpy(param.fp_poolname, optarg, LOV_MAXPOOLNAME);
+                       param.fp_poolname[LOV_MAXPOOLNAME] = '\0';
+                       param.fp_exclude_pool = !!neg_opt;
+                       param.fp_check_pool = 1;
+                       break;
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
+               case 'p': /* want this for --pool, to match getstripe/find */
+                       fprintf(stderr,
+                               "warning: -p deprecated, use --print0 or -0\n");
+#endif
+               case '0':
+                       param.fp_zero_end = 1;
+                       break;
+               case 'P': /* we always print, this option is a no-op */
+                       break;
+               case LFS_PROJID_OPT:
+                       rc = name2projid(&param.fp_projid, optarg);
+                       if (rc) {
+                               param.fp_projid = strtoul(optarg, &endptr, 10);
+                               if (*endptr != '\0') {
+                                       fprintf(stderr,
+                                               "Invalid project ID: %s",
+                                               optarg);
+                                       ret = -1;
+                                       goto err;
+                               }
+                       }
+                       param.fp_exclude_projid = !!neg_opt;
+                       param.fp_check_projid = 1;
+                       break;
+               case 's':
+                       if (optarg[0] == '+') {
+                               param.fp_size_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param.fp_size_sign =  1;
+                               optarg++;
+                       }
+
+                       ret = llapi_parse_size(optarg, &param.fp_size,
+                                              &param.fp_size_units, 0);
+                       if (ret) {
+                               fprintf(stderr, "error: bad file size '%s'\n",
+                                       optarg);
+                               goto err;
+                       }
+                       param.fp_check_size = 1;
+                       param.fp_exclude_size = !!neg_opt;
+                       break;
+               case 'S':
+                       if (optarg[0] == '+') {
+                               param.fp_stripe_size_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param.fp_stripe_size_sign =  1;
+                               optarg++;
+                       }
+
+                       ret = llapi_parse_size(optarg, &param.fp_stripe_size,
+                                              &param.fp_stripe_size_units, 0);
+                       if (ret) {
+                               fprintf(stderr, "error: bad stripe_size '%s'\n",
+                                       optarg);
+                               goto err;
+                       }
+                       param.fp_check_stripe_size = 1;
+                       param.fp_exclude_stripe_size = !!neg_opt;
+                       break;
+               case 't':
+                       param.fp_exclude_type = !!neg_opt;
+                       switch (optarg[0]) {
+                       case 'b':
+                               param.fp_type = S_IFBLK;
+                               break;
+                       case 'c':
+                               param.fp_type = S_IFCHR;
+                               break;
+                       case 'd':
+                               param.fp_type = S_IFDIR;
+                               break;
+                       case 'f':
+                               param.fp_type = S_IFREG;
+                               break;
+                       case 'l':
+                               param.fp_type = S_IFLNK;
+                               break;
+                       case 'p':
+                               param.fp_type = S_IFIFO;
+                               break;
+                       case 's':
+                               param.fp_type = S_IFSOCK;
+                               break;
+                       default:
+                               fprintf(stderr, "error: %s: bad type '%s'\n",
+                                       argv[0], optarg);
+                               ret = CMD_HELP;
+                               goto err;
+                       };
+                       break;
+               case 'T':
+                       if (optarg[0] == '+') {
+                               param.fp_mdt_count_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param.fp_mdt_count_sign =  1;
+                               optarg++;
+                       }
+
+                       param.fp_mdt_count = strtoul(optarg, &endptr, 0);
+                       if (*endptr != '\0') {
+                               fprintf(stderr, "error: bad mdt_count '%s'\n",
+                                       optarg);
+                               ret = -1;
+                               goto err;
+                       }
+                       param.fp_check_mdt_count = 1;
+                       param.fp_exclude_mdt_count = !!neg_opt;
+                       break;
+               case 'z':
+                       param.fp_lazy = 1;
+                       break;
+                default:
+                        ret = CMD_HELP;
+                        goto err;
+                };
+        }
+
+        if (pathstart == -1) {
+                fprintf(stderr, "error: %s: no filename|pathname\n",
+                        argv[0]);
+                ret = CMD_HELP;
+                goto err;
+        } else if (pathend == -1) {
+                /* no options */
+                pathend = argc;
+        }
+
+       do {
+               rc = llapi_find(argv[pathstart], &param);
+               if (rc != 0 && ret == 0)
+                       ret = rc;
+       } while (++pathstart < pathend);
+
+        if (ret)
+                fprintf(stderr, "error: %s failed for %s.\n",
+                        argv[0], argv[optind - 1]);
+err:
+       if (param.fp_obd_uuid && param.fp_num_alloc_obds)
+               free(param.fp_obd_uuid);
+
+       if (param.fp_mdt_uuid && param.fp_num_alloc_mdts)
+               free(param.fp_mdt_uuid);
+
+        return ret;
+}
+
+static int lfs_getstripe_internal(int argc, char **argv,
+                                 struct find_param *param)
+{
+       struct option long_opts[] = {
+/* find        { .val = 'A',   .name = "atime",        .has_arg = required_argument }*/
+/* find        { .val = 'b',   .name = "blocks",       .has_arg = required_argument }*/
+       { .val = LFS_COMP_COUNT_OPT,
+                       .name = "comp-count",   .has_arg = no_argument },
+       { .val = LFS_COMP_COUNT_OPT,
+               .name = "component-count",      .has_arg = no_argument },
+       { .val = LFS_COMP_FLAGS_OPT,
+                       .name = "comp-flags",   .has_arg = optional_argument },
+       { .val = LFS_COMP_FLAGS_OPT,
+               .name = "component-flags",      .has_arg = optional_argument },
+       { .val = LFS_COMP_START_OPT,
+                       .name = "comp-start",   .has_arg = optional_argument },
+       { .val = LFS_COMP_START_OPT,
+               .name = "component-start",      .has_arg = optional_argument },
+       { .val = LFS_MIRROR_INDEX_OPT,
+               .name = "mirror-index",         .has_arg = required_argument },
+       { .val = LFS_MIRROR_ID_OPT,
+               .name = "mirror-id",            .has_arg = required_argument },
+       { .val = 'c',   .name = "stripe-count", .has_arg = no_argument },
+       { .val = 'c',   .name = "stripe_count", .has_arg = no_argument },
+/* find        { .val = 'C',   .name = "ctime",        .has_arg = required_argument }*/
+       { .val = 'd',   .name = "directory",    .has_arg = no_argument },
+       { .val = 'D',   .name = "default",      .has_arg = no_argument },
+       { .val = 'E',   .name = "comp-end",     .has_arg = optional_argument },
+       { .val = 'E',   .name = "component-end", .has_arg = optional_argument },
+       { .val = 'F',   .name = "fid",          .has_arg = no_argument },
+       { .val = 'g',   .name = "generation",   .has_arg = no_argument },
+/* find        { .val = 'G',   .name = "group",        .has_arg = required_argument }*/
+/* dirstripe { .val = 'H', .name = "mdt-hash", .has_arg = required_argument }*/
+       { .val = 'i',   .name = "stripe-index", .has_arg = no_argument },
+       { .val = 'i',   .name = "stripe_index", .has_arg = no_argument },
+       { .val = 'I',   .name = "comp-id",      .has_arg = optional_argument },
+       { .val = 'I',   .name = "component-id", .has_arg = optional_argument },
+       { .val = 'L',   .name = "layout",       .has_arg = no_argument },
+       { .val = 'm',   .name = "mdt",          .has_arg = no_argument },
+       { .val = 'm',   .name = "mdt-index",    .has_arg = no_argument },
+       { .val = 'm',   .name = "mdt_index",    .has_arg = no_argument },
+/* find        { .val = 'M',   .name = "mtime",        .has_arg = required_argument }*/
+/* find        { .val = 'n',   .name = "name",         .has_arg = required_argument }*/
+       { .val = 'N',   .name = "mirror-count", .has_arg = no_argument },
+       { .val = 'O',   .name = "obd",          .has_arg = required_argument },
+       { .val = 'O',   .name = "ost",          .has_arg = required_argument },
+       { .val = 'p',   .name = "pool",         .has_arg = no_argument },
+/* find        { .val = 'P',   .name = "print",        .has_arg = no_argument }, */
+       { .val = 'q',   .name = "quiet",        .has_arg = no_argument },
+       { .val = 'r',   .name = "recursive",    .has_arg = no_argument },
+       { .val = 'R',   .name = "raw",          .has_arg = no_argument },
+       { .val = 'S',   .name = "stripe-size",  .has_arg = no_argument },
+       { .val = 'S',   .name = "stripe_size",  .has_arg = no_argument },
+/* find        { .val = 't',   .name = "type",         .has_arg = required_argument }*/
+/* dirstripe { .val = 'T', .name = "mdt-count",        .has_arg = required_argument }*/
+/* find        { .val = 'u',   .name = "uid",          .has_arg = required_argument }*/
+/* find        { .val = 'U',   .name = "user",         .has_arg = required_argument }*/
+       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
+       { .val = 'y',   .name = "yaml",         .has_arg = no_argument },
+       { .name = NULL } };
+       int c, rc;
+       int neg_opt = 0;
+       int pathstart = -1, pathend = -1;
+       int isoption;
+       char *end, *tmp;
+
+       while ((c = getopt_long(argc, argv,
+                       "-cdDE::FghiI::LmMNoO:pqrRsSvy",
+                       long_opts, NULL)) != -1) {
+               if (neg_opt)
+                       --neg_opt;
+
+               /* '!' is part of option */
+               isoption = (c != 1) || (strcmp(optarg, "!") == 0);
+               if (!isoption && pathend != -1) {
+                       fprintf(stderr,
+                               "error: %s: filename|dirname must either precede options or follow options\n",
+                               argv[0]);
+                       return CMD_HELP;
+               }
+               if (!isoption && pathstart == -1)
+                       pathstart = optind - 1;
+               if (isoption && pathstart != -1 && pathend == -1)
+                       pathend = optind - 2;
+
+               switch (c) {
+               case 1:
+                       /* unknown: opt is "!" */
+                       if (strcmp(optarg, "!") == 0)
+                               neg_opt = 2;
+                       break;
+               case 'c':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
+                               param->fp_verbose |= VERBOSE_COUNT;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case LFS_COMP_COUNT_OPT:
+                       param->fp_verbose |= VERBOSE_COMP_COUNT;
+                       param->fp_max_depth = 0;
+                       break;
+               case LFS_COMP_FLAGS_OPT:
+                       if (optarg != NULL) {
+                               rc = comp_str2flags(optarg,
+                                                   &param->fp_comp_flags,
+                                                   &param->fp_comp_neg_flags);
+                               if (rc != 0) {
+                                       fprintf(stderr, "error: %s bad "
+                                               "component flags '%s'.\n",
+                                               argv[0], optarg);
+                                       return CMD_HELP;
+                               }
+                               param->fp_check_comp_flags = 1;
+                       } else {
+                               param->fp_verbose |= VERBOSE_COMP_FLAGS;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case LFS_COMP_START_OPT:
+                       if (optarg != NULL) {
+                               tmp = optarg;
+                               if (tmp[0] == '+') {
+                                       param->fp_comp_start_sign = -1;
+                                       tmp++;
+                               } else if (tmp[0] == '-') {
+                                       param->fp_comp_start_sign = 1;
+                                       tmp++;
+                               }
+                               rc = llapi_parse_size(tmp,
+                                               &param->fp_comp_start,
+                                               &param->fp_comp_start_units, 0);
+                               if (rc != 0) {
+                                       fprintf(stderr, "error: %s bad "
+                                               "component start '%s'.\n",
+                                               argv[0], tmp);
+                                       return CMD_HELP;
+                               } else {
+                                       param->fp_check_comp_start = 1;
+                               }
+                       } else {
+                               param->fp_verbose |= VERBOSE_COMP_START;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case LFS_MIRROR_INDEX_OPT:
+                       if (optarg[0] == '+') {
+                               param->fp_mirror_index_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param->fp_mirror_index_sign = 1;
+                               optarg++;
+                       }
+
+                       param->fp_mirror_index = strtoul(optarg, &end, 0);
+                       if (*end != '\0' || (param->fp_mirror_index == 0 &&
+                           param->fp_mirror_index_sign == 0 && neg_opt == 0)) {
+                               fprintf(stderr,
+                                       "%s %s: invalid mirror index '%s'\n",
+                                       progname, argv[0], optarg);
+                               return CMD_HELP;
+                       }
+                       if (param->fp_mirror_id != 0) {
+                               fprintf(stderr,
+                                       "%s %s: can't specify both mirror index and mirror ID\n",
+                                       progname, argv[0]);
+                               return CMD_HELP;
+                       }
+                       param->fp_check_mirror_index = 1;
+                       param->fp_exclude_mirror_index = !!neg_opt;
+                       break;
+               case LFS_MIRROR_ID_OPT:
+                       if (optarg[0] == '+') {
+                               param->fp_mirror_id_sign = -1;
+                               optarg++;
+                       } else if (optarg[0] == '-') {
+                               param->fp_mirror_id_sign = 1;
+                               optarg++;
+                       }
+
+                       param->fp_mirror_id = strtoul(optarg, &end, 0);
+                       if (*end != '\0' || (param->fp_mirror_id == 0 &&
+                           param->fp_mirror_id_sign == 0 && neg_opt == 0)) {
+                               fprintf(stderr,
+                                       "%s %s: invalid mirror ID '%s'\n",
+                                       progname, argv[0], optarg);
+                               return CMD_HELP;
+                       }
+                       if (param->fp_mirror_index != 0) {
+                               fprintf(stderr,
+                                       "%s %s: can't specify both mirror index and mirror ID\n",
+                                       progname, argv[0]);
+                               return CMD_HELP;
+                       }
+                       param->fp_check_mirror_id = 1;
+                       param->fp_exclude_mirror_id = !!neg_opt;
+                       break;
+               case 'd':
+                       param->fp_max_depth = 0;
+                       break;
+               case 'D':
+                       param->fp_get_default_lmv = 1;
+                       break;
+               case 'E':
+                       if (optarg != NULL) {
+                               tmp = optarg;
+                               if (tmp[0] == '+') {
+                                       param->fp_comp_end_sign = -1;
+                                       tmp++;
+                               } else if (tmp[0] == '-') {
+                                       param->fp_comp_end_sign = 1;
+                                       tmp++;
+                               }
+
+                               if (arg_is_eof(tmp)) {
+                                       param->fp_comp_end = LUSTRE_EOF;
+                                       param->fp_comp_end_units = 1;
+                                       rc = 0;
+                               } else {
+                                       rc = llapi_parse_size(tmp,
+                                               &param->fp_comp_end,
+                                               &param->fp_comp_end_units, 0);
+                               }
+                               if (rc != 0) {
+                                       fprintf(stderr, "error: %s bad "
+                                               "component end '%s'.\n",
+                                               argv[0], tmp);
+                                       return CMD_HELP;
+                               }
+                               param->fp_check_comp_end = 1;
+                       } else {
+                               param->fp_verbose |= VERBOSE_COMP_END;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case 'F':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
+                               param->fp_verbose |= VERBOSE_DFID;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case 'g':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
+                               param->fp_verbose |= VERBOSE_GENERATION;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case 'i':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
+                               param->fp_verbose |= VERBOSE_STRIPE_OFFSET;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case 'I':
+                       if (optarg != NULL) {
+                               param->fp_comp_id = strtoul(optarg, &end, 0);
+                               if (*end != '\0' || param->fp_comp_id == 0 ||
+                                   param->fp_comp_id > LCME_ID_MAX) {
+                                       fprintf(stderr, "error: %s bad "
+                                               "component id '%s'\n",
+                                               argv[0], optarg);
+                                       return CMD_HELP;
+                               } else {
+                                       param->fp_check_comp_id = 1;
+                               }
+                       } else {
+                               param->fp_max_depth = 0;
+                               param->fp_verbose |= VERBOSE_COMP_ID;
+                       }
+                       break;
+               case 'L':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
+                               param->fp_verbose |= VERBOSE_PATTERN;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+               case 'M':
+                       fprintf(stderr, "warning: '-M' deprecated"
+                               ", use '--mdt-index' or '-m' instead\n");
+#endif
+               case 'm':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL))
+                               param->fp_max_depth = 0;
+                       param->fp_verbose |= VERBOSE_MDTINDEX;
+                       break;
+               case 'N':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
+                               param->fp_verbose |= VERBOSE_MIRROR_COUNT;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case 'O':
+                       if (param->fp_obd_uuid) {
+                               fprintf(stderr,
+                                       "error: %s: only one obduuid allowed",
+                                       argv[0]);
+                               return CMD_HELP;
+                       }
+                       param->fp_obd_uuid = (struct obd_uuid *)optarg;
+                       break;
+               case 'p':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
+                               param->fp_verbose |= VERBOSE_POOL;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case 'q':
+                       param->fp_quiet++;
+                       break;
+               case 'r':
+                       param->fp_recursive = 1;
+                       break;
+               case 'R':
+                       param->fp_raw = 1;
+                       break;
+               case 'S':
+                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
+                               param->fp_verbose |= VERBOSE_STRIPE_SIZE;
+                               param->fp_max_depth = 0;
+                       }
+                       break;
+               case 'v':
+                       param->fp_verbose = VERBOSE_DEFAULT | VERBOSE_DETAIL;
+                       break;
+               case 'y':
+                       param->fp_yaml = 1;
+                       break;
+               default:
+                       return CMD_HELP;
+               }
+       }
+
+       if (pathstart == -1) {
+               fprintf(stderr, "error: %s: no filename|pathname\n",
+                               argv[0]);
+               return CMD_HELP;
+       } else if (pathend == -1) {
+               /* no options */
+               pathend = argc;
+       }
+
+       if (pathend > argc)
+               return CMD_HELP;
+
+       if (param->fp_recursive)
+               param->fp_max_depth = -1;
+       else if (param->fp_verbose & VERBOSE_DETAIL)
+               param->fp_max_depth = 1;
+
+       if (!param->fp_verbose)
+               param->fp_verbose = VERBOSE_DEFAULT;
+       if (param->fp_quiet)
+               param->fp_verbose = VERBOSE_OBJID;
+
+       do {
+               rc = llapi_getstripe(argv[pathstart], param);
+       } while (++pathstart < pathend && !rc);
+
+       if (rc)
+               fprintf(stderr, "error: %s failed for %s.\n",
+                       argv[0], argv[optind - 1]);
+       return rc;
+}
+
+static int lfs_tgts(int argc, char **argv)
+{
+        char mntdir[PATH_MAX] = {'\0'}, path[PATH_MAX] = {'\0'};
+        struct find_param param;
+        int index = 0, rc=0;
+
+        if (argc > 2)
+                return CMD_HELP;
+
+        if (argc == 2 && !realpath(argv[1], path)) {
+                rc = -errno;
+                fprintf(stderr, "error: invalid path '%s': %s\n",
+                        argv[1], strerror(-rc));
+                return rc;
+        }
+
+        while (!llapi_search_mounts(path, index++, mntdir, NULL)) {
+                /* Check if we have a mount point */
+                if (mntdir[0] == '\0')
+                        continue;
+
+                memset(&param, 0, sizeof(param));
+                if (!strcmp(argv[0], "mdts"))
+                       param.fp_get_lmv = 1;
+
+                rc = llapi_ostlist(mntdir, &param);
+                if (rc) {
+                        fprintf(stderr, "error: %s: failed on %s\n",
+                                argv[0], mntdir);
+                }
+                if (path[0] != '\0')
+                        break;
+                memset(mntdir, 0, PATH_MAX);
+        }
+
+        return rc;
+}
+
+static int lfs_getstripe(int argc, char **argv)
+{
+       struct find_param param = { 0 };
+
+       param.fp_max_depth = 1;
+       return lfs_getstripe_internal(argc, argv, &param);
+}
+
+/* functions */
+static int lfs_getdirstripe(int argc, char **argv)
+{
+       struct find_param param = { 0 };
+       struct option long_opts[] = {
+       { .val = 'c',   .name = "mdt-count",    .has_arg = no_argument },
+       { .val = 'D',   .name = "default",      .has_arg = no_argument },
+       { .val = 'H',   .name = "mdt-hash",     .has_arg = no_argument },
+       { .val = 'i',   .name = "mdt-index",    .has_arg = no_argument },
+       { .val = 'm',   .name = "mdt-index",    .has_arg = no_argument },
+       { .val = 'O',   .name = "obd",          .has_arg = required_argument },
+       { .val = 'r',   .name = "recursive",    .has_arg = no_argument },
+       { .val = 'T',   .name = "mdt-count",    .has_arg = no_argument },
+       { .val = 'y',   .name = "yaml",         .has_arg = no_argument },
+       { .name = NULL } };
+       int c, rc;
+
+       param.fp_get_lmv = 1;
+
+       while ((c = getopt_long(argc, argv,
+                               "cDHimO:rtTy", long_opts, NULL)) != -1)
+       {
+               switch (c) {
+               case 'c':
+               case 'T':
+                       param.fp_verbose |= VERBOSE_COUNT;
+                       break;
+               case 'D':
+                       param.fp_get_default_lmv = 1;
+                       break;
+               case 'i':
+               case 'm':
+                       param.fp_verbose |= VERBOSE_STRIPE_OFFSET;
+                       break;
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+               case 't':
+                       fprintf(stderr, "warning: '-t' deprecated, "
+                               "use '--mdt-hash' or '-H' instead\n");
+#endif
+               case 'H':
+                       param.fp_verbose |= VERBOSE_HASH_TYPE;
+                       break;
+               case 'O':
+                       if (param.fp_obd_uuid) {
+                               fprintf(stderr,
+                                       "error: %s: only one obduuid allowed",
+                                       argv[0]);
+                               return CMD_HELP;
+                       }
+                       param.fp_obd_uuid = (struct obd_uuid *)optarg;
+                       break;
+               case 'r':
+                       param.fp_recursive = 1;
+                       break;
+               case 'y':
+                       param.fp_yaml = 1;
+                       break;
+               default:
+                       return CMD_HELP;
+               }
+       }
+
+       if (optind >= argc)
+               return CMD_HELP;
+
+       if (param.fp_recursive)
+               param.fp_max_depth = -1;
+
+       if (!param.fp_verbose)
+               param.fp_verbose = VERBOSE_DEFAULT;
+
+       do {
+               rc = llapi_getstripe(argv[optind], &param);
+       } while (++optind < argc && !rc);
+
+       if (rc)
+               fprintf(stderr, "error: %s failed for %s.\n",
+                       argv[0], argv[optind - 1]);
+       return rc;
+}
+
+enum mntdf_flags {
+       MNTDF_INODES    = 0x0001,
+       MNTDF_COOKED    = 0x0002,
+       MNTDF_LAZY      = 0x0004,
+       MNTDF_VERBOSE   = 0x0008,
+       MNTDF_SHOW      = 0x0010,
+};
+
+#define COOK(value)                                            \
+({                                                             \
+       int radix = 0;                                          \
+       while (value > 1024) {                                  \
+               value /= 1024;                                  \
+               radix++;                                        \
+       }                                                       \
+       radix;                                                  \
+})
+#define UUF     "%-20s"
+#define CSF     "%11s"
+#define CDF     "%11llu"
+#define HDF     "%8.1f%c"
+#define RSF     "%4s"
+#define RDF     "%3d%%"
+
+static inline int obd_statfs_ratio(const struct obd_statfs *st, bool inodes)
+{
+       double avail, used, ratio = 0;
+
+       if (inodes) {
+               avail = st->os_ffree;
+               used = st->os_files - st->os_ffree;
+       } else {
+               avail = st->os_bavail;
+               used = st->os_blocks - st->os_bfree;
+       }
+       if (avail + used > 0)
+               ratio = used / (used + avail) * 100;
+
+       /* Round up to match df(1) usage percentage */
+       return (ratio - (int)ratio) > 0 ? (int)(ratio + 1) : (int)ratio;
+}
+
+static int showdf(char *mntdir, struct obd_statfs *stat,
+                 char *uuid, enum mntdf_flags flags,
+                 char *type, int index, int rc)
+{
+       long long avail, used, total;
+       int ratio = 0;
+       char *suffix = "KMGTPEZY";
+       /* Note if we have >2^64 bytes/fs these buffers will need to be grown */
+       char tbuf[3 * sizeof(__u64)];
+       char ubuf[3 * sizeof(__u64)];
+       char abuf[3 * sizeof(__u64)];
+       char rbuf[3 * sizeof(__u64)];
+
+       if (!uuid || !stat)
+               return -EINVAL;
+
+       switch (rc) {
+       case 0:
+               if (flags & MNTDF_INODES) {
+                       avail = stat->os_ffree;
+                       used = stat->os_files - stat->os_ffree;
+                       total = stat->os_files;
+               } else {
+                       int shift = flags & MNTDF_COOKED ? 0 : 10;
+
+                       avail = (stat->os_bavail * stat->os_bsize) >> shift;
+                       used  = ((stat->os_blocks - stat->os_bfree) *
+                                stat->os_bsize) >> shift;
+                       total = (stat->os_blocks * stat->os_bsize) >> shift;
+               }
+
+               ratio = obd_statfs_ratio(stat, flags & MNTDF_INODES);
+
+               if (flags & MNTDF_COOKED) {
+                       int i;
+                       double cook_val;
+
+                       cook_val = (double)total;
+                       i = COOK(cook_val);
+                       if (i > 0)
+                               snprintf(tbuf, sizeof(tbuf), HDF, cook_val,
+                                        suffix[i - 1]);
+                       else
+                               snprintf(tbuf, sizeof(tbuf), CDF, total);
+
+                       cook_val = (double)used;
+                       i = COOK(cook_val);
+                       if (i > 0)
+                               snprintf(ubuf, sizeof(ubuf), HDF, cook_val,
+                                        suffix[i - 1]);
+                       else
+                               snprintf(ubuf, sizeof(ubuf), CDF, used);
+
+                       cook_val = (double)avail;
+                       i = COOK(cook_val);
+                       if (i > 0)
+                               snprintf(abuf, sizeof(abuf), HDF, cook_val,
+                                        suffix[i - 1]);
+                       else
+                               snprintf(abuf, sizeof(abuf), CDF, avail);
+               } else {
+                       snprintf(tbuf, sizeof(tbuf), CDF, total);
+                       snprintf(ubuf, sizeof(tbuf), CDF, used);
+                       snprintf(abuf, sizeof(tbuf), CDF, avail);
+               }
+
+               sprintf(rbuf, RDF, ratio);
+               printf(UUF" "CSF" "CSF" "CSF" "RSF" %-s",
+                      uuid, tbuf, ubuf, abuf, rbuf, mntdir);
+               if (type)
+                       printf("[%s:%d]", type, index);
+
+               if (stat->os_state) {
+                       /*
+                        * Each character represents the matching
+                        * OS_STATE_* bit.
+                        */
+                       const char state_names[] = "DRSI";
+                       __u32      state;
+                       __u32      i;
+
+                       printf(" ");
+                       for (i = 0, state = stat->os_state;
+                            state && i < sizeof(state_names); i++) {
+                               if (!(state & (1 << i)))
+                                       continue;
+                               printf("%c", state_names[i]);
+                               state ^= 1 << i;
+                       }
+               }
+
+               printf("\n");
+               break;
+       case -ENODATA:
+               printf(UUF": inactive device\n", uuid);
+               break;
+       default:
+               printf(UUF": %s\n", uuid, strerror(-rc));
+               break;
+       }
+
+       return 0;
+}
+
+struct ll_stat_type {
+       int   st_op;
+       char *st_name;
+};
+
+#define LL_STATFS_MAX  LOV_MAX_STRIPE_COUNT
+
+struct ll_statfs_data {
+       int                     sd_index;
+       struct obd_statfs       sd_st;
+};
+
+struct ll_statfs_buf {
+       int                     sb_count;
+       struct ll_statfs_data   sb_buf[LL_STATFS_MAX];
+};
+
+static int mntdf(char *mntdir, char *fsname, char *pool, enum mntdf_flags flags,
+                int ops, struct ll_statfs_buf *lsb)
+{
+       struct obd_statfs stat_buf, sum = { .os_bsize = 1 };
+       struct obd_uuid uuid_buf;
+       char *poolname = NULL;
+       struct ll_stat_type types[] = {
+               { .st_op = LL_STATFS_LMV,       .st_name = "MDT" },
+               { .st_op = LL_STATFS_LOV,       .st_name = "OST" },
+               { .st_name = NULL } };
+       struct ll_stat_type *tp;
+       __u64 ost_ffree = 0;
+       __u32 index;
+       __u32 type;
+       int fd;
+       int rc = 0;
+       int rc2;
+
+       if (pool) {
+               poolname = strchr(pool, '.');
+               if (poolname != NULL) {
+                       if (strncmp(fsname, pool, strlen(fsname))) {
+                               fprintf(stderr, "filesystem name incorrect\n");
+                               return -ENODEV;
+                       }
+                       poolname++;
+               } else
+                       poolname = pool;
+       }
+
+       fd = open(mntdir, O_RDONLY);
+       if (fd < 0) {
+               rc = -errno;
+               fprintf(stderr, "%s: cannot open '%s': %s\n", progname, mntdir,
+                       strerror(errno));
+               return rc;
+       }
+
+       if (flags & MNTDF_SHOW) {
+               if (flags & MNTDF_INODES)
+                       printf(UUF" "CSF" "CSF" "CSF" "RSF" %-s\n",
+                              "UUID", "Inodes", "IUsed", "IFree",
+                              "IUse%", "Mounted on");
+               else
+                       printf(UUF" "CSF" "CSF" "CSF" "RSF" %-s\n",
+                              "UUID",
+                              flags & MNTDF_COOKED ? "bytes" : "1K-blocks",
+                              "Used", "Available", "Use%", "Mounted on");
+       }
+
+       for (tp = types; tp->st_name != NULL; tp++) {
+               bool have_ost = false;
+
+               if (!(tp->st_op & ops))
+                       continue;
+
+               for (index = 0; ; index++) {
+                       memset(&stat_buf, 0, sizeof(struct obd_statfs));
+                       memset(&uuid_buf, 0, sizeof(struct obd_uuid));
+                       type = flags & MNTDF_LAZY ?
+                               tp->st_op | LL_STATFS_NODELAY : tp->st_op;
+                       rc2 = llapi_obd_fstatfs(fd, type, index,
+                                              &stat_buf, &uuid_buf);
+                       if (rc2 == -ENODEV)
+                               break;
+                       if (rc2 == -EAGAIN)
+                               continue;
+                       if (rc2 == -ENODATA) { /* Inactive device, OK. */
+                               if (!(flags & MNTDF_VERBOSE))
+                                       continue;
+                       } else if (rc2 < 0 && rc == 0) {
+                               rc = rc2;
+                       }
+
+                       /* If we have OSTs then don't report MDT block counts.
+                        * For MDT-only filesystems the expectation is that all
+                        * layouts have a DoM component.  For filesystems with
+                        * OSTs, files are not necessarily going to store data
+                        * on MDTs, and MDT space is limited to a fraction of
+                        * OST space, so don't include it in the summary.
+                        */
+                       if (tp->st_op == LL_STATFS_LOV && !have_ost) {
+                               have_ost = true;
+                               sum.os_blocks = 0;
+                               sum.os_bfree = 0;
+                               sum.os_bavail = 0;
+                       }
+
+                       if (poolname && tp->st_op == LL_STATFS_LOV &&
+                           llapi_search_ost(fsname, poolname,
+                                            obd_uuid2str(&uuid_buf)) != 1)
+                               continue;
+
+                       /* the llapi_obd_statfs() call may have returned with
+                        * an error, but if it filled in uuid_buf we will at
+                        * lease use that to print out a message for that OBD.
+                        * If we didn't get anything in the uuid_buf, then fill
+                        * it in so that we can print an error message. */
+                       if (uuid_buf.uuid[0] == '\0')
+                               snprintf(uuid_buf.uuid, sizeof(uuid_buf.uuid),
+                                        "%s%04x", tp->st_name, index);
+                       if (!rc && lsb) {
+                               lsb->sb_buf[lsb->sb_count].sd_index = index;
+                               lsb->sb_buf[lsb->sb_count].sd_st = stat_buf;
+                               lsb->sb_count++;
+                       }
+                       if (flags & MNTDF_SHOW)
+                               showdf(mntdir, &stat_buf,
+                                      obd_uuid2str(&uuid_buf), flags,
+                                      tp->st_name, index, rc2);
+
+                       if (rc2)
+                               continue;
+
+                       if (tp->st_op == LL_STATFS_LMV) {
+                               sum.os_ffree += stat_buf.os_ffree;
+                               sum.os_files += stat_buf.os_files;
+                       } else /* if (tp->st_op == LL_STATFS_LOV) */ {
+                               ost_ffree += stat_buf.os_ffree;
+                       }
+                       sum.os_blocks += stat_buf.os_blocks *
+                                        stat_buf.os_bsize;
+                       sum.os_bfree  += stat_buf.os_bfree *
+                                        stat_buf.os_bsize;
+                       sum.os_bavail += stat_buf.os_bavail *
+                                        stat_buf.os_bsize;
+               }
+       }
+
+       close(fd);
+
+       /* If we don't have as many objects free on the OST as inodes
+        * on the MDS, we reduce the total number of inodes to
+        * compensate, so that the "inodes in use" number is correct.
+        * Matches ll_statfs_internal() so the results are consistent. */
+       if (ost_ffree < sum.os_ffree) {
+               sum.os_files = (sum.os_files - sum.os_ffree) + ost_ffree;
+               sum.os_ffree = ost_ffree;
+       }
+       if (flags & MNTDF_SHOW) {
+               printf("\n");
+               showdf(mntdir, &sum, "filesystem_summary:", flags, NULL, 0, 0);
+               printf("\n");
+       }
+
+       return rc;
+}
+
+static int ll_statfs_data_comp(const void *sd1, const void *sd2)
+{
+       const struct obd_statfs *st1 = &((const struct ll_statfs_data *)sd1)->
+                                               sd_st;
+       const struct obd_statfs *st2 = &((const struct ll_statfs_data *)sd2)->
+                                               sd_st;
+       int r1 = obd_statfs_ratio(st1, false);
+       int r2 = obd_statfs_ratio(st2, false);
+       int64_t result = r1 - r2;
+
+       /* if both space usage are above 90, compare free inodes */
+       if (r1 > 90 && r2 > 90)
+               result = st2->os_ffree - st1->os_ffree;
+
+       if (result < 0)
+               return -1;
+       else if (result == 0)
+               return 0;
+       else
+               return 1;
+}
+
+/* functions */
+static int lfs_setdirstripe(int argc, char **argv)
+{
+       char                    *dname;
+       int                     result;
+       struct lfs_setstripe_args        lsa = { 0 };
+       struct llapi_stripe_param       *param = NULL;
+       __u32                   mdts[LMV_MAX_STRIPE_COUNT] = { 0 };
+       char                    *end;
+       int                     c;
+       char                    *mode_opt = NULL;
+       bool                    default_stripe = false;
+       mode_t                  mode = S_IRWXU | S_IRWXG | S_IRWXO;
+       mode_t                  previous_mode = 0;
+       bool                    delete = false;
+       struct ll_statfs_buf    *lsb = NULL;
+       char                    mntdir[PATH_MAX] = "";
+       bool                    auto_distributed = false;
+
+       struct option long_opts[] = {
+       { .val = 'c',   .name = "count",        .has_arg = required_argument },
+       { .val = 'c',   .name = "mdt-count",    .has_arg = required_argument },
+       { .val = 'd',   .name = "delete",       .has_arg = no_argument },
+       { .val = 'D',   .name = "default",      .has_arg = no_argument },
+       { .val = 'D',   .name = "default_stripe", .has_arg = no_argument },
+       { .val = 'H',   .name = "mdt-hash",     .has_arg = required_argument },
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 53, 0)
+       { .val = 'i',   .name = "mdt-index",    .has_arg = required_argument },
+       { .val = 'i',   .name = "mdt",          .has_arg = required_argument },
+#else
+       { .val = 'm',   .name = "mdt-index",    .has_arg = required_argument },
+       { .val = 'm',   .name = "mdt",          .has_arg = required_argument },
+#endif
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+       { .val = 'i',   .name = "index",        .has_arg = required_argument },
+#endif
+       { .val = 'o',   .name = "mode",         .has_arg = required_argument },
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+       { .val = 't',   .name = "hash-type",    .has_arg = required_argument },
+#endif
+       { .val = 'T',   .name = "mdt-count",    .has_arg = required_argument },
+/* setstripe { .val = 'y', .name = "yaml",     .has_arg = no_argument }, */
+       { .name = NULL } };
+
+       setstripe_args_init(&lsa);
+
+       while ((c = getopt_long(argc, argv, "c:dDi:H:m:o:t:T:", long_opts,
+                               NULL)) >= 0) {
+               switch (c) {
+               case 0:
+                       /* Long options. */
+                       break;
+               case 'c':
+               case 'T':
+                       lsa.lsa_stripe_count = strtoul(optarg, &end, 0);
+                       if (*end != '\0') {
+                               fprintf(stderr,
+                                       "%s %s: invalid stripe count '%s'\n",
+                                       progname, argv[0], optarg);
+                               return CMD_HELP;
+                       }
                        break;
-               case LFS_COMP_START_OPT:
-                       if (optarg[0] == '+') {
-                               param.fp_comp_start_sign = -1;
-                               optarg++;
-                       } else if (optarg[0] == '-') {
-                               param.fp_comp_start_sign =  1;
-                               optarg++;
+               case 'd':
+                       delete = true;
+                       default_stripe = true;
+                       break;
+               case 'D':
+                       default_stripe = true;
+                       break;
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+               case 't':
+                       fprintf(stderr, "warning: '--hash-type' and '-t' "
+                             "deprecated, use '--mdt-hash' or '-H' instead\n");
+#endif
+               case 'H':
+                       lsa.lsa_pattern = check_hashtype(optarg);
+                       if (lsa.lsa_pattern == 0) {
+                               fprintf(stderr,
+                                       "%s %s: bad stripe hash type '%s'\n",
+                                       progname, argv[0], optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+               case 'i':
+#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 17, 53, 0)
+               case 'm':
+#endif
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+                       if (strcmp(argv[optind - 1], "--index") == 0)
+                               fprintf(stderr,
+                                       "%s %s: warning: '--index' deprecated, use '--mdt-index' instead\n",
+                                       progname, argv[0]);
+#endif
+                       lsa.lsa_nr_tgts = parse_targets(mdts,
+                                               sizeof(mdts) / sizeof(__u32),
+                                               lsa.lsa_nr_tgts, optarg);
+                       if (lsa.lsa_nr_tgts < 0) {
+                               fprintf(stderr,
+                                       "%s %s: invalid MDT target(s) '%s'\n",
+                                       progname, argv[0], optarg);
+                               return CMD_HELP;
+                       }
+
+                       lsa.lsa_tgts = mdts;
+                       if (lsa.lsa_stripe_off == LLAPI_LAYOUT_DEFAULT)
+                               lsa.lsa_stripe_off = mdts[0];
+                       break;
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 15, 53, 0)
+               case 'm':
+                       fprintf(stderr, "warning: '-m' is deprecated, "
+                               "use '--mode' or '-o' instead\n");
+#endif
+               case 'o':
+                       mode_opt = optarg;
+                       break;
+               default:
+                       fprintf(stderr, "%s %s: unrecognized option '%s'\n",
+                               progname, argv[0], argv[optind - 1]);
+                       return CMD_HELP;
+               }
+       }
+
+       if (optind == argc) {
+               fprintf(stderr, "%s %s: DIR must be specified\n",
+                       progname, argv[0]);
+               return CMD_HELP;
+       }
+
+       if (!delete && lsa.lsa_stripe_off == LLAPI_LAYOUT_DEFAULT &&
+           lsa.lsa_stripe_count == LLAPI_LAYOUT_DEFAULT) {
+               fprintf(stderr,
+                       "%s %s: stripe offset and count must be specified\n",
+                       progname, argv[0]);
+               return CMD_HELP;
+       }
+
+       if (delete &&
+           (lsa.lsa_stripe_off != LLAPI_LAYOUT_DEFAULT ||
+            lsa.lsa_stripe_count != LLAPI_LAYOUT_DEFAULT)) {
+               fprintf(stderr,
+                       "%s %s: cannot specify -d with -c or -i options\n",
+                       progname, argv[0]);
+               return CMD_HELP;
+       }
+
+       if (mode_opt != NULL) {
+               mode = strtoul(mode_opt, &end, 8);
+               if (*end != '\0') {
+                       fprintf(stderr,
+                               "%s %s: bad MODE '%s'\n",
+                               progname, argv[0], mode_opt);
+                       return CMD_HELP;
+               }
+               previous_mode = umask(0);
+       }
+
+       /*
+        * initialize stripe parameters, in case param is converted to specific,
+        * i.e, 'lfs mkdir -i -1 -c N', always allocate space for lsp_tgts.
+        */
+       param = calloc(1, offsetof(typeof(*param),
+                      lsp_tgts[lsa.lsa_stripe_count != LLAPI_LAYOUT_DEFAULT ?
+                               lsa.lsa_stripe_count : lsa.lsa_nr_tgts]));
+       if (param == NULL) {
+               fprintf(stderr,
+                       "%s %s: cannot allocate memory for parameters: %s\n",
+                       progname, argv[0], strerror(ENOMEM));
+               return CMD_HELP;
+       }
+
+       if (lsa.lsa_stripe_count != LLAPI_LAYOUT_DEFAULT)
+               param->lsp_stripe_count = lsa.lsa_stripe_count;
+       if (lsa.lsa_stripe_off == LLAPI_LAYOUT_DEFAULT)
+               param->lsp_stripe_offset = -1;
+       else
+               param->lsp_stripe_offset = lsa.lsa_stripe_off;
+       if (lsa.lsa_pattern != LLAPI_LAYOUT_RAID0)
+               param->lsp_stripe_pattern = lsa.lsa_pattern;
+       else
+               param->lsp_stripe_pattern = LMV_HASH_TYPE_FNV_1A_64;
+       param->lsp_pool = lsa.lsa_pool_name;
+       param->lsp_is_specific = false;
+       if (lsa.lsa_nr_tgts > 1) {
+               if (lsa.lsa_stripe_count > 0 &&
+                   lsa.lsa_stripe_count != LLAPI_LAYOUT_DEFAULT &&
+                   lsa.lsa_stripe_count != lsa.lsa_nr_tgts) {
+                       fprintf(stderr, "error: %s: stripe count %lld doesn't "
+                               "match the number of MDTs: %d\n",
+                               argv[0], lsa.lsa_stripe_count, lsa.lsa_nr_tgts);
+                       free(param);
+                       return CMD_HELP;
+               }
+
+               param->lsp_is_specific = true;
+               param->lsp_stripe_count = lsa.lsa_nr_tgts;
+               memcpy(param->lsp_tgts, mdts, sizeof(*mdts) * lsa.lsa_nr_tgts);
+       }
+
+       dname = argv[optind];
+       do {
+               if (default_stripe) {
+                       result = llapi_dir_set_default_lmv(dname, param);
+               } else {
+                       /* if current \a dname isn't under the same \a mntdir
+                        * as the last one, and the last one was
+                        * auto-distributed, restore \a param.
+                        */
+                       if (mntdir[0] != '\0' &&
+                           strncmp(dname, mntdir, strlen(mntdir)) &&
+                           auto_distributed) {
+                               param->lsp_is_specific = false;
+                               param->lsp_stripe_offset = -1;
+                               auto_distributed = false;
+                       }
+
+                       if (!param->lsp_is_specific &&
+                           param->lsp_stripe_offset == -1) {
+                               char path[PATH_MAX] = "";
+
+                               if (!lsb) {
+                                       lsb = malloc(sizeof(*lsb));
+                                       if (!lsb) {
+                                               result = -ENOMEM;
+                                               break;
+                                       }
+                               }
+                               lsb->sb_count = 0;
+
+                               /* use mntdir for dirname() temporarily */
+                               strncpy(mntdir, dname, sizeof(mntdir));
+                               if (!realpath(dirname(mntdir), path)) {
+                                       result = -errno;
+                                       fprintf(stderr,
+                                               "error: invalid path '%s': %s\n",
+                                               argv[optind], strerror(errno));
+                                       break;
+                               }
+                               mntdir[0] = '\0';
+
+                               result = llapi_search_mounts(path, 0, mntdir,
+                                                            NULL);
+                               if (result < 0 || mntdir[0] == '\0') {
+                                       fprintf(stderr,
+                                               "No suitable Lustre mount found\n");
+                                       break;
+                               }
+
+                               result = mntdf(mntdir, NULL, NULL, 0,
+                                              LL_STATFS_LMV, lsb);
+                               if (result < 0)
+                                       break;
+
+                               if (param->lsp_stripe_count > lsb->sb_count) {
+                                       fprintf(stderr,
+                                               "error: stripe count %d is too big\n",
+                                               param->lsp_stripe_count);
+                                       result = -ERANGE;
+                                       break;
+                               }
+
+                               qsort(lsb->sb_buf, lsb->sb_count,
+                                     sizeof(struct ll_statfs_data),
+                                     ll_statfs_data_comp);
+
+                               auto_distributed = true;
+                       }
+
+                       if (auto_distributed) {
+                               int r;
+                               int nr = MAX(param->lsp_stripe_count,
+                                            lsb->sb_count / 2);
+
+                               /* don't use server whose usage is above 90% */
+                               while (nr != param->lsp_stripe_count &&
+                                      obd_statfs_ratio(&lsb->sb_buf[nr].sd_st,
+                                                       false) > 90)
+                                       nr = MAX(param->lsp_stripe_count,
+                                                nr / 2);
+
+                               /* get \a r between [0, nr) */
+                               r = rand() % nr;
+
+                               param->lsp_stripe_offset =
+                                       lsb->sb_buf[r].sd_index;
+                               if (param->lsp_stripe_count > 1) {
+                                       int i = 0;
+
+                                       param->lsp_is_specific = true;
+                                       for (; i < param->lsp_stripe_count; i++)
+                                               param->lsp_tgts[(i + r) % nr] =
+                                                       lsb->sb_buf[i].sd_index;
+                               }
+                       }
+
+                       result = llapi_dir_create(dname, mode, param);
+               }
+
+               if (result) {
+                       fprintf(stderr,
+                               "%s setdirstripe: cannot create stripe dir '%s': %s\n",
+                               progname, dname, strerror(-result));
+                       break;
+               }
+               dname = argv[++optind];
+       } while (dname != NULL);
+
+       if (mode_opt != NULL)
+               umask(previous_mode);
+
+       free(lsb);
+       free(param);
+       return result;
+}
+
+/* functions */
+static int lfs_rmentry(int argc, char **argv)
+{
+       char *dname;
+       int   index;
+       int   result = 0;
+
+       if (argc <= 1) {
+               fprintf(stderr, "error: %s: missing dirname\n",
+                       argv[0]);
+               return CMD_HELP;
+       }
+
+       index = 1;
+       dname = argv[index];
+       while (dname != NULL) {
+               result = llapi_direntry_remove(dname);
+               if (result) {
+                       fprintf(stderr, "error: %s: remove dir entry '%s' "
+                               "failed\n", argv[0], dname);
+                       break;
+               }
+               dname = argv[++index];
+       }
+       return result;
+}
+
+static int lfs_mv(int argc, char **argv)
+{
+       struct lmv_user_md lmu = { LMV_USER_MAGIC };
+       struct find_param param = {
+               .fp_max_depth = -1,
+               .fp_mdt_index = -1,
+       };
+       char *end;
+       int c;
+       int rc = 0;
+       struct option long_opts[] = {
+       { .val = 'm',   .name = "mdt",          .has_arg = required_argument },
+       { .val = 'm',   .name = "mdt-index",    .has_arg = required_argument },
+       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
+       { .name = NULL } };
+
+       while ((c = getopt_long(argc, argv, "m:M:v", long_opts, NULL)) != -1) {
+               switch (c) {
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+               case 'M':
+                       fprintf(stderr, "warning: '-M' deprecated"
+                               ", use '--mdt-index' or '-m' instead\n");
+#endif
+               case 'm':
+                       lmu.lum_stripe_offset = strtoul(optarg, &end, 0);
+                       if (*end != '\0') {
+                               fprintf(stderr, "%s mv: bad MDT index '%s'\n",
+                                       progname, optarg);
+                               return CMD_HELP;
                        }
+                       break;
+               case 'v':
+                       param.fp_verbose = VERBOSE_DETAIL;
+                       break;
+               default:
+                       fprintf(stderr, "%s mv: unrecognized option '%s'\n",
+                               progname, argv[optind - 1]);
+                       return CMD_HELP;
+               }
+       }
+
+       if (lmu.lum_stripe_offset == -1) {
+               fprintf(stderr, "%s mv: MDT index must be specified\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       if (optind >= argc) {
+               fprintf(stderr, "%s mv: DIR must be specified\n", progname);
+               return CMD_HELP;
+       }
+
+
+       /* initialize migrate mdt parameters */
+       param.fp_lmv_md = &lmu;
+       param.fp_migrate = 1;
+       rc = llapi_migrate_mdt(argv[optind], &param);
+       if (rc != 0)
+               fprintf(stderr, "%s mv: cannot migrate '%s' to MDT%04x: %s\n",
+                       progname, argv[optind], param.fp_mdt_index,
+                       strerror(-rc));
+       return rc;
+}
 
-                       rc = llapi_parse_size(optarg, &param.fp_comp_start,
-                                             &param.fp_comp_start_units, 0);
-                       if (rc) {
-                               fprintf(stderr, "error: bad component start "
-                                       "'%s'\n", optarg);
-                               goto err;
-                       }
-                       param.fp_check_comp_start = 1;
-                       param.fp_exclude_comp_start = !!neg_opt;
-                       break;
-                case 'c':
-                        if (optarg[0] == '+') {
-                               param.fp_stripe_count_sign = -1;
-                                optarg++;
-                        } else if (optarg[0] == '-') {
-                               param.fp_stripe_count_sign =  1;
-                                optarg++;
-                        }
+static int lfs_osts(int argc, char **argv)
+{
+        return lfs_tgts(argc, argv);
+}
 
-                       param.fp_stripe_count = strtoul(optarg, &endptr, 0);
-                        if (*endptr != '\0') {
-                                fprintf(stderr,"error: bad stripe_count '%s'\n",
-                                        optarg);
-                                ret = -1;
-                                goto err;
-                        }
-                       param.fp_check_stripe_count = 1;
-                       param.fp_exclude_stripe_count = !!neg_opt;
-                        break;
-               case 'D':
-                       param.fp_max_depth = strtol(optarg, 0, 0);
-                       break;
-               case 'E':
-                       if (optarg[0] == '+') {
-                               param.fp_comp_end_sign = -1;
-                               optarg++;
-                       } else if (optarg[0] == '-') {
-                               param.fp_comp_end_sign =  1;
-                               optarg++;
-                       }
+static int lfs_mdts(int argc, char **argv)
+{
+        return lfs_tgts(argc, argv);
+}
 
-                       if (arg_is_eof(optarg)) {
-                               param.fp_comp_end = LUSTRE_EOF;
-                               param.fp_comp_end_units = 1;
-                               rc = 0;
-                       } else {
-                               rc = llapi_parse_size(optarg,
-                                               &param.fp_comp_end,
-                                               &param.fp_comp_end_units, 0);
-                       }
-                       if (rc) {
-                               fprintf(stderr, "error: bad component end "
-                                       "'%s'\n", optarg);
-                               goto err;
-                       }
-                       param.fp_check_comp_end = 1;
-                       param.fp_exclude_comp_end = !!neg_opt;
+static int lfs_df(int argc, char **argv)
+{
+       char mntdir[PATH_MAX] = {'\0'}, path[PATH_MAX] = {'\0'};
+       enum mntdf_flags flags = MNTDF_SHOW;
+       int ops = LL_STATFS_LMV | LL_STATFS_LOV;
+       int c, rc = 0, index = 0;
+       char fsname[PATH_MAX] = "", *pool_name = NULL;
+       struct option long_opts[] = {
+       { .val = 'h',   .name = "human-readable",
+                                               .has_arg = no_argument },
+       { .val = 'i',   .name = "inodes",       .has_arg = no_argument },
+       { .val = 'l',   .name = "lazy",         .has_arg = no_argument },
+       { .val = 'p',   .name = "pool",         .has_arg = required_argument },
+       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
+       { .name = NULL} };
+
+       while ((c = getopt_long(argc, argv, "hilp:v", long_opts, NULL)) != -1) {
+               switch (c) {
+               case 'h':
+                       flags |= MNTDF_COOKED;
                        break;
-               case 'g':
-               case 'G':
-                       rc = name2gid(&param.fp_gid, optarg);
-                       if (rc) {
-                               param.fp_gid = strtoul(optarg, &endptr, 10);
-                                if (*endptr != '\0') {
-                                        fprintf(stderr, "Group/GID: %s cannot "
-                                                "be found.\n", optarg);
-                                        ret = -1;
-                                        goto err;
-                                }
-                        }
-                       param.fp_exclude_gid = !!neg_opt;
-                       param.fp_check_gid = 1;
-                        break;
-               case 'H':
-                       param.fp_hash_type = check_hashtype(optarg);
-                       if (param.fp_hash_type == 0) {
-                               fprintf(stderr, "error: bad hash_type '%s'\n",
-                                       optarg);
-                               ret = -1;
-                               goto err;
-                       }
-                       param.fp_check_hash_type = 1;
-                       param.fp_exclude_hash_type = !!neg_opt;
+               case 'i':
+                       flags |= MNTDF_INODES;
                        break;
-               case 'L':
-                       ret = name2layout(&param.fp_layout, optarg);
-                       if (ret)
-                               goto err;
-                       param.fp_exclude_layout = !!neg_opt;
-                       param.fp_check_layout = 1;
+               case 'l':
+                       flags |= MNTDF_LAZY;
                        break;
-               case 'u':
-               case 'U':
-                       rc = name2uid(&param.fp_uid, optarg);
-                       if (rc) {
-                               param.fp_uid = strtoul(optarg, &endptr, 10);
-                               if (*endptr != '\0') {
-                                       fprintf(stderr, "User/UID: %s cannot "
-                                                "be found.\n", optarg);
-                                        ret = -1;
-                                        goto err;
-                                }
+               case 'p':
+                       pool_name = optarg;
+                       break;
+               case 'v':
+                       flags |= MNTDF_VERBOSE;
+                       break;
+               default:
+                       return CMD_HELP;
+               }
+       }
+       if (optind < argc && !realpath(argv[optind], path)) {
+               rc = -errno;
+               fprintf(stderr, "error: invalid path '%s': %s\n",
+                       argv[optind], strerror(-rc));
+               return rc;
+       }
+
+       while (!llapi_search_mounts(path, index++, mntdir, fsname)) {
+               /* Check if we have a mount point */
+               if (mntdir[0] == '\0')
+                       continue;
+
+               rc = mntdf(mntdir, fsname, pool_name, flags, ops, NULL);
+               if (rc || path[0] != '\0')
+                       break;
+               fsname[0] = '\0'; /* avoid matching in next loop */
+               mntdir[0] = '\0'; /* avoid matching in next loop */
+       }
+
+       return rc;
+}
+
+static int lfs_getname(int argc, char **argv)
+{
+        char mntdir[PATH_MAX] = "", path[PATH_MAX] = "", fsname[PATH_MAX] = "";
+        int rc = 0, index = 0, c;
+        char buf[sizeof(struct obd_uuid)];
+
+        while ((c = getopt(argc, argv, "h")) != -1)
+                return CMD_HELP;
+
+        if (optind == argc) { /* no paths specified, get all paths. */
+                while (!llapi_search_mounts(path, index++, mntdir, fsname)) {
+                        rc = llapi_getname(mntdir, buf, sizeof(buf));
+                        if (rc < 0) {
+                                fprintf(stderr,
+                                        "cannot get name for `%s': %s\n",
+                                        mntdir, strerror(-rc));
+                                break;
                         }
-                       param.fp_exclude_uid = !!neg_opt;
-                       param.fp_check_uid = 1;
-                        break;
-               case LFS_POOL_OPT:
-                        if (strlen(optarg) > LOV_MAXPOOLNAME) {
+
+                        printf("%s %s\n", buf, mntdir);
+
+                        path[0] = fsname[0] = mntdir[0] = 0;
+                }
+        } else { /* paths specified, only attempt to search these. */
+                for (; optind < argc; optind++) {
+                        rc = llapi_getname(argv[optind], buf, sizeof(buf));
+                        if (rc < 0) {
                                 fprintf(stderr,
-                                        "Pool name %s is too long"
-                                        " (max is %d)\n", optarg,
-                                        LOV_MAXPOOLNAME);
-                                ret = -1;
-                                goto err;
+                                        "cannot get name for `%s': %s\n",
+                                        argv[optind], strerror(-rc));
+                                break;
                         }
-                        /* we do check for empty pool because empty pool
-                         * is used to find V1 lov attributes */
-                       strncpy(param.fp_poolname, optarg, LOV_MAXPOOLNAME);
-                       param.fp_poolname[LOV_MAXPOOLNAME] = '\0';
-                       param.fp_exclude_pool = !!neg_opt;
-                       param.fp_check_pool = 1;
-                        break;
-                case 'n':
-                       param.fp_pattern = (char *)optarg;
-                       param.fp_exclude_pattern = !!neg_opt;
-                        break;
-                case 'm':
-                case 'i':
-                case 'O': {
-                        char *buf, *token, *next, *p;
-                        int len = 1;
-                        void *tmp;
 
-                        buf = strdup(optarg);
-                        if (buf == NULL) {
-                                ret = -ENOMEM;
-                                goto err;
-                        }
+                        printf("%s %s\n", buf, argv[optind]);
+                }
+        }
+        return rc;
+}
+
+static int lfs_check(int argc, char **argv)
+{
+       char mntdir[PATH_MAX] = {'\0'};
+       int num_types = 1;
+       char *obd_types[3];
+       char obd_type1[4];
+       char obd_type2[4];
+       char obd_type3[4];
+       int rc;
+
+       if (argc != 2) {
+               fprintf(stderr, "%s check: server type must be specified\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       obd_types[0] = obd_type1;
+       obd_types[1] = obd_type2;
+       obd_types[2] = obd_type3;
+
+       if (strcmp(argv[1], "osts") == 0) {
+               strcpy(obd_types[0], "osc");
+       } else if (strcmp(argv[1], "mdts") == 0 ||
+                  strcmp(argv[1], "mds") == 0) {
+               strcpy(obd_types[0], "mdc");
+       } else if (strcmp(argv[1], "mgts") == 0) {
+               strcpy(obd_types[0], "mgc");
+       } else if (strcmp(argv[1], "all") == 0 ||
+                  strcmp(argv[1], "servers") == 0) {
+               num_types = 3;
+               strcpy(obd_types[0], "osc");
+               strcpy(obd_types[1], "mdc");
+               strcpy(obd_types[2], "mgc");
+       } else {
+               fprintf(stderr, "%s check: unrecognized option '%s'\n",
+                       progname, argv[1]);
+               return CMD_HELP;
+       }
+
+        rc = llapi_search_mounts(NULL, 0, mntdir, NULL);
+       if (rc < 0 || mntdir[0] == '\0') {
+               fprintf(stderr,
+                       "%s check: cannot find mounted Lustre filesystem: %s\n",
+                       progname, (rc < 0) ? strerror(-rc) : strerror(ENODEV));
+               return rc;
+       }
+
+       rc = llapi_target_check(num_types, obd_types, mntdir);
+       if (rc)
+               fprintf(stderr, "%s check: cannot check target '%s': %s\n",
+                       progname, argv[1], strerror(-rc));
+
+       return rc;
+
+}
+
+#ifdef HAVE_SYS_QUOTA_H
+#define ARG2INT(nr, str, msg)                                           \
+do {                                                                    \
+       char *endp;                                                     \
+       nr = strtol(str, &endp, 0);                                     \
+       if (*endp != '\0') {                                            \
+               fprintf(stderr, "%s: bad %s '%s'\n",                    \
+                       progname, msg, str);                            \
+               return CMD_HELP;                                        \
+       }                                                               \
+} while (0)
+
+#define ADD_OVERFLOW(a,b) ((a + b) < a) ? (a = ULONG_MAX) : (a = a + b)
+
+/* Convert format time string "XXwXXdXXhXXmXXs" into seconds value
+ * returns the value or ULONG_MAX on integer overflow or incorrect format
+ * Notes:
+ *        1. the order of specifiers is arbitrary (may be: 5w3s or 3s5w)
+ *        2. specifiers may be encountered multiple times (2s3s is 5 seconds)
+ *        3. empty integer value is interpreted as 0
+ */
+static unsigned long str2sec(const char* timestr)
+{
+        const char spec[] = "smhdw";
+        const unsigned long mult[] = {1, 60, 60*60, 24*60*60, 7*24*60*60};
+        unsigned long val = 0;
+        char *tail;
+
+        if (strpbrk(timestr, spec) == NULL) {
+                /* no specifiers inside the time string,
+                   should treat it as an integer value */
+                val = strtoul(timestr, &tail, 10);
+                return *tail ? ULONG_MAX : val;
+        }
 
-                       param.fp_exclude_obd = !!neg_opt;
+        /* format string is XXwXXdXXhXXmXXs */
+        while (*timestr) {
+                unsigned long v;
+                int ind;
+                char* ptr;
 
-                        token = buf;
-                        while (token && *token) {
-                                token = strchr(token, ',');
-                                if (token) {
-                                        len++;
-                                        token++;
-                                }
-                        }
-                        if (c == 'm') {
-                               param.fp_exclude_mdt = !!neg_opt;
-                               param.fp_num_alloc_mdts += len;
-                               tmp = realloc(param.fp_mdt_uuid,
-                                             param.fp_num_alloc_mdts *
-                                             sizeof(*param.fp_mdt_uuid));
-                               if (tmp == NULL) {
-                                       ret = -ENOMEM;
-                                       goto err_free;
-                               }
+                v = strtoul(timestr, &tail, 10);
+                if (v == ULONG_MAX || *tail == '\0')
+                        /* value too large (ULONG_MAX or more)
+                           or missing specifier */
+                        goto error;
 
-                               param.fp_mdt_uuid = tmp;
-                        } else {
-                               param.fp_exclude_obd = !!neg_opt;
-                               param.fp_num_alloc_obds += len;
-                               tmp = realloc(param.fp_obd_uuid,
-                                             param.fp_num_alloc_obds *
-                                             sizeof(*param.fp_obd_uuid));
-                               if (tmp == NULL) {
-                                       ret = -ENOMEM;
-                                       goto err_free;
-                               }
+                ptr = strchr(spec, *tail);
+                if (ptr == NULL)
+                        /* unknown specifier */
+                        goto error;
 
-                               param.fp_obd_uuid = tmp;
-                        }
-                        for (token = buf; token && *token; token = next) {
-                               struct obd_uuid *puuid;
-                               if (c == 'm') {
-                                       puuid =
-                                       &param.fp_mdt_uuid[param.fp_num_mdts++];
-                               } else {
-                                       puuid =
-                                       &param.fp_obd_uuid[param.fp_num_obds++];
-                               }
-                                p = strchr(token, ',');
-                                next = 0;
-                                if (p) {
-                                        *p = 0;
-                                        next = p+1;
-                                }
+                ind = ptr - spec;
 
-                               if (strlen(token) > sizeof(puuid->uuid) - 1) {
-                                       ret = -E2BIG;
-                                       goto err_free;
-                               }
+                /* check if product will overflow the type */
+                if (!(v < ULONG_MAX / mult[ind]))
+                        goto error;
 
-                               strncpy(puuid->uuid, token,
-                                       sizeof(puuid->uuid));
-                       }
-err_free:
-                       if (buf)
-                               free(buf);
-                       break;
-               }
-               case 'p':
-                       param.fp_zero_end = 1;
-                       break;
-               case 'P':
-                       break;
-               case LFS_PROJID_OPT:
-                       rc = name2projid(&param.fp_projid, optarg);
-                       if (rc) {
-                               param.fp_projid = strtoul(optarg, &endptr, 10);
-                               if (*endptr != '\0') {
-                                       fprintf(stderr,
-                                               "Invalid project ID: %s",
-                                               optarg);
-                                       ret = -1;
-                                       goto err;
-                               }
-                       }
-                       param.fp_exclude_projid = !!neg_opt;
-                       param.fp_check_projid = 1;
-                       break;
-               case 's':
-                       if (optarg[0] == '+') {
-                               param.fp_size_sign = -1;
-                               optarg++;
-                       } else if (optarg[0] == '-') {
-                               param.fp_size_sign =  1;
-                               optarg++;
-                       }
+                ADD_OVERFLOW(val, mult[ind] * v);
+                if (val == ULONG_MAX)
+                        goto error;
 
-                       ret = llapi_parse_size(optarg, &param.fp_size,
-                                              &param.fp_size_units, 0);
-                       if (ret) {
-                               fprintf(stderr, "error: bad file size '%s'\n",
-                                       optarg);
-                               goto err;
-                       }
-                       param.fp_check_size = 1;
-                       param.fp_exclude_size = !!neg_opt;
-                       break;
-               case 'S':
-                       if (optarg[0] == '+') {
-                               param.fp_stripe_size_sign = -1;
-                               optarg++;
-                       } else if (optarg[0] == '-') {
-                               param.fp_stripe_size_sign =  1;
-                               optarg++;
-                       }
+                timestr = tail + 1;
+        }
 
-                       ret = llapi_parse_size(optarg, &param.fp_stripe_size,
-                                              &param.fp_stripe_size_units, 0);
-                       if (ret) {
-                               fprintf(stderr, "error: bad stripe_size '%s'\n",
-                                       optarg);
-                               goto err;
-                       }
-                       param.fp_check_stripe_size = 1;
-                       param.fp_exclude_stripe_size = !!neg_opt;
-                       break;
-               case 't':
-                       param.fp_exclude_type = !!neg_opt;
-                       switch (optarg[0]) {
-                       case 'b':
-                               param.fp_type = S_IFBLK;
-                               break;
-                       case 'c':
-                               param.fp_type = S_IFCHR;
-                               break;
-                       case 'd':
-                               param.fp_type = S_IFDIR;
-                               break;
-                       case 'f':
-                               param.fp_type = S_IFREG;
-                               break;
-                       case 'l':
-                               param.fp_type = S_IFLNK;
-                               break;
-                       case 'p':
-                               param.fp_type = S_IFIFO;
-                               break;
-                       case 's':
-                               param.fp_type = S_IFSOCK;
-                               break;
-                       default:
-                               fprintf(stderr, "error: %s: bad type '%s'\n",
-                                       argv[0], optarg);
-                               ret = CMD_HELP;
-                               goto err;
-                       };
-                       break;
-               case 'T':
-                       if (optarg[0] == '+') {
-                               param.fp_mdt_count_sign = -1;
-                               optarg++;
-                       } else if (optarg[0] == '-') {
-                               param.fp_mdt_count_sign =  1;
-                               optarg++;
-                       }
+        return val;
 
-                       param.fp_mdt_count = strtoul(optarg, &endptr, 0);
-                       if (*endptr != '\0') {
-                               fprintf(stderr, "error: bad mdt_count '%s'\n",
-                                       optarg);
-                               ret = -1;
-                               goto err;
+error:
+        return ULONG_MAX;
+}
+
+#define ARG2ULL(nr, str, def_units)                                    \
+do {                                                                   \
+       unsigned long long limit, units = def_units;                    \
+       int rc;                                                         \
+                                                                       \
+       rc = llapi_parse_size(str, &limit, &units, 1);                  \
+       if (rc < 0) {                                                   \
+               fprintf(stderr, "%s: invalid limit '%s'\n",             \
+                       progname, str);                                 \
+               return CMD_HELP;                                        \
+       }                                                               \
+       nr = limit;                                                     \
+} while (0)
+
+static inline int has_times_option(int argc, char **argv)
+{
+        int i;
+
+        for (i = 1; i < argc; i++)
+                if (!strcmp(argv[i], "-t"))
+                        return 1;
+
+        return 0;
+}
+
+int lfs_setquota_times(int argc, char **argv)
+{
+        int c, rc;
+        struct if_quotactl qctl;
+        char *mnt, *obd_type = (char *)qctl.obd_type;
+        struct obd_dqblk *dqb = &qctl.qc_dqblk;
+        struct obd_dqinfo *dqi = &qctl.qc_dqinfo;
+        struct option long_opts[] = {
+       { .val = 'b',   .name = "block-grace",  .has_arg = required_argument },
+       { .val = 'g',   .name = "group",        .has_arg = no_argument },
+       { .val = 'i',   .name = "inode-grace",  .has_arg = required_argument },
+       { .val = 'p',   .name = "projid",       .has_arg = no_argument },
+       { .val = 't',   .name = "times",        .has_arg = no_argument },
+       { .val = 'u',   .name = "user",         .has_arg = no_argument },
+       { .name = NULL } };
+       int qtype;
+
+       memset(&qctl, 0, sizeof(qctl));
+       qctl.qc_cmd  = LUSTRE_Q_SETINFO;
+       qctl.qc_type = ALLQUOTA;
+
+       while ((c = getopt_long(argc, argv, "b:gi:ptu",
+                               long_opts, NULL)) != -1) {
+               switch (c) {
+               case 'u':
+                       qtype = USRQUOTA;
+                       goto quota_type;
+               case 'g':
+                       qtype = GRPQUOTA;
+                       goto quota_type;
+               case 'p':
+                       qtype = PRJQUOTA;
+quota_type:
+                       if (qctl.qc_type != ALLQUOTA) {
+                               fprintf(stderr, "error: -u/g/p can't be used "
+                                                "more than once\n");
+                               return CMD_HELP;
                        }
-                       param.fp_check_mdt_count = 1;
-                       param.fp_exclude_mdt_count = !!neg_opt;
+                       qctl.qc_type = qtype;
                        break;
-                default:
-                        ret = CMD_HELP;
-                        goto err;
-                };
+                case 'b':
+                        if ((dqi->dqi_bgrace = str2sec(optarg)) == ULONG_MAX) {
+                                fprintf(stderr, "error: bad block-grace: %s\n",
+                                        optarg);
+                                return CMD_HELP;
+                        }
+                        dqb->dqb_valid |= QIF_BTIME;
+                        break;
+                case 'i':
+                        if ((dqi->dqi_igrace = str2sec(optarg)) == ULONG_MAX) {
+                                fprintf(stderr, "error: bad inode-grace: %s\n",
+                                        optarg);
+                                return CMD_HELP;
+                        }
+                        dqb->dqb_valid |= QIF_ITIME;
+                        break;
+                case 't': /* Yes, of course! */
+                        break;
+                default: /* getopt prints error message for us when opterr != 0 */
+                        return CMD_HELP;
+                }
         }
 
-        if (pathstart == -1) {
-                fprintf(stderr, "error: %s: no filename|pathname\n",
-                        argv[0]);
-                ret = CMD_HELP;
-                goto err;
-        } else if (pathend == -1) {
-                /* no options */
-                pathend = argc;
+       if (qctl.qc_type == ALLQUOTA) {
+               fprintf(stderr, "error: neither -u, -g nor -p specified\n");
+                return CMD_HELP;
         }
 
-       do {
-               rc = llapi_find(argv[pathstart], &param);
-               if (rc != 0 && ret == 0)
-                       ret = rc;
-       } while (++pathstart < pathend);
+        if (optind != argc - 1) {
+                fprintf(stderr, "error: unexpected parameters encountered\n");
+                return CMD_HELP;
+        }
 
-        if (ret)
-                fprintf(stderr, "error: %s failed for %s.\n",
-                        argv[0], argv[optind - 1]);
-err:
-       if (param.fp_obd_uuid && param.fp_num_alloc_obds)
-               free(param.fp_obd_uuid);
+       if ((dqb->dqb_valid | QIF_BTIME && dqi->dqi_bgrace >= UINT_MAX) ||
+           (dqb->dqb_valid | QIF_ITIME && dqi->dqi_igrace >= UINT_MAX)) {
+               fprintf(stderr, "error: grace time is too large\n");
+               return CMD_HELP;
+       }
 
-       if (param.fp_mdt_uuid && param.fp_num_alloc_mdts)
-               free(param.fp_mdt_uuid);
+        mnt = argv[optind];
+        rc = llapi_quotactl(mnt, &qctl);
+        if (rc) {
+                if (*obd_type)
+                        fprintf(stderr, "%s %s ", obd_type,
+                                obd_uuid2str(&qctl.obd_uuid));
+                fprintf(stderr, "setquota failed: %s\n", strerror(-rc));
+                return rc;
+        }
 
-        return ret;
+        return 0;
 }
 
-static int lfs_getstripe_internal(int argc, char **argv,
-                                 struct find_param *param)
+#define BSLIMIT (1 << 0)
+#define BHLIMIT (1 << 1)
+#define ISLIMIT (1 << 2)
+#define IHLIMIT (1 << 3)
+
+int lfs_setquota(int argc, char **argv)
 {
+       int c, rc = 0;
+       struct if_quotactl qctl;
+       char *mnt, *obd_type = (char *)qctl.obd_type;
+       struct obd_dqblk *dqb = &qctl.qc_dqblk;
        struct option long_opts[] = {
-       { .val = LFS_COMP_COUNT_OPT,
-                       .name = "comp-count",   .has_arg = no_argument },
-       { .val = LFS_COMP_COUNT_OPT,
-               .name = "component-count",      .has_arg = no_argument },
-       { .val = LFS_COMP_FLAGS_OPT,
-                       .name = "comp-flags",   .has_arg = optional_argument },
-       { .val = LFS_COMP_FLAGS_OPT,
-               .name = "component-flags",      .has_arg = optional_argument },
-       { .val = LFS_COMP_START_OPT,
-                       .name = "comp-start",   .has_arg = optional_argument },
-       { .val = LFS_COMP_START_OPT,
-               .name = "component-start",      .has_arg = optional_argument },
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-       /* This formerly implied "stripe-count", but was explicitly
-        * made "stripe-count" for consistency with other options,
-        * and to separate it from "mdt-count" when DNE arrives. */
-       { .val = 'c',   .name = "count",        .has_arg = no_argument },
-#endif
-       { .val = 'c',   .name = "stripe-count", .has_arg = no_argument },
-       { .val = 'c',   .name = "stripe_count", .has_arg = no_argument },
-       { .val = 'd',   .name = "directory",    .has_arg = no_argument },
-       { .val = 'D',   .name = "default",      .has_arg = no_argument },
-       { .val = 'E',   .name = "comp-end",     .has_arg = optional_argument },
-       { .val = 'E',   .name = "component-end",
-                                               .has_arg = optional_argument },
-       { .val = 'F',   .name = "fid",          .has_arg = no_argument },
-       { .val = 'g',   .name = "generation",   .has_arg = no_argument },
-       /* dirstripe { .val = 'H',      .name = "mdt-hash",
-        *             .has_arg = required_argument }, */
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-       /* This formerly implied "stripe-index", but was explicitly
-        * made "stripe-index" for consistency with other options,
-        * and to separate it from "mdt-index" when DNE arrives. */
-       { .val = 'i',   .name = "index",        .has_arg = no_argument },
-#endif
-       { .val = 'i',   .name = "stripe-index", .has_arg = no_argument },
-       { .val = 'i',   .name = "stripe_index", .has_arg = no_argument },
-       { .val = 'I',   .name = "comp-id",      .has_arg = optional_argument },
-       { .val = 'I',   .name = "component-id", .has_arg = optional_argument },
-       { .val = 'L',   .name = "layout",       .has_arg = no_argument },
-       { .val = 'm',   .name = "mdt",          .has_arg = no_argument },
-       { .val = 'm',   .name = "mdt-index",    .has_arg = no_argument },
-       { .val = 'm',   .name = "mdt_index",    .has_arg = no_argument },
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-       { .val = 'M',   .name = "mdt-index",    .has_arg = no_argument },
-       { .val = 'M',   .name = "mdt_index",    .has_arg = no_argument },
-#endif
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-       /* This formerly implied "stripe-index", but was confusing
-        * with "file offset" (which will eventually be needed for
-        * with different layouts by offset), so deprecate it. */
-       { .val = 'o',   .name = "offset",       .has_arg = no_argument },
-#endif
-       { .val = 'O',   .name = "obd",          .has_arg = required_argument },
-       { .val = 'O',   .name = "ost",          .has_arg = required_argument },
-       { .val = 'p',   .name = "pool",         .has_arg = no_argument },
-       { .val = 'q',   .name = "quiet",        .has_arg = no_argument },
-       { .val = 'r',   .name = "recursive",    .has_arg = no_argument },
-       { .val = 'R',   .name = "raw",          .has_arg = no_argument },
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-       /* This formerly implied "--stripe-size", but was confusing
-        * with "lfs find --size|-s", which means "file size", so use
-        * the consistent "--stripe-size|-S" for all commands. */
-       { .val = 's',   .name = "size",         .has_arg = no_argument },
-#endif
-       { .val = 'S',   .name = "stripe-size",  .has_arg = no_argument },
-       { .val = 'S',   .name = "stripe_size",  .has_arg = no_argument },
-       /* dirstripe { .val = 'T',      .name = "mdt-count",
-        *             .has_arg = required_argument }, */
-       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
-       { .val = 'y',   .name = "yaml",         .has_arg = no_argument },
-       { .name = NULL } };
-       int c, rc;
-       char *end, *tmp;
-
-       while ((c = getopt_long(argc, argv, "cdDE::FghiI::LmMoO:pqrRsSvy",
-                               long_opts, NULL)) != -1) {
-               switch (c) {
-               case 'c':
-                       if (strcmp(argv[optind - 1], "--count") == 0)
-                               fprintf(stderr, "warning: '--count' deprecated,"
-                                       " use '--stripe-count' instead\n");
-                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_COUNT;
-                               param->fp_max_depth = 0;
-                       }
-                       break;
-               case LFS_COMP_COUNT_OPT:
-                       param->fp_verbose |= VERBOSE_COMP_COUNT;
-                       param->fp_max_depth = 0;
-                       break;
-               case LFS_COMP_FLAGS_OPT:
-                       if (optarg != NULL) {
-                               __u32 *flags = &param->fp_comp_flags;
-                               rc = comp_str2flags(flags, optarg);
-                               if (rc != 0) {
-                                       fprintf(stderr, "error: %s bad "
-                                               "component flags '%s'.\n",
-                                               argv[0], optarg);
-                                       return CMD_HELP;
-                               } else {
-                                       param->fp_check_comp_flags = 1;
-                                       param->fp_exclude_comp_flags =
-                                               comp_flags_is_neg(*flags);
-                                       comp_flags_clear_neg(flags);
-                               }
-                       } else {
-                               param->fp_verbose |= VERBOSE_COMP_FLAGS;
-                               param->fp_max_depth = 0;
-                       }
-                       break;
-               case LFS_COMP_START_OPT:
-                       if (optarg != NULL) {
-                               tmp = optarg;
-                               if (tmp[0] == '+') {
-                                       param->fp_comp_start_sign = -1;
-                                       tmp++;
-                               } else if (tmp[0] == '-') {
-                                       param->fp_comp_start_sign = 1;
-                                       tmp++;
-                               }
-                               rc = llapi_parse_size(tmp,
-                                               &param->fp_comp_start,
-                                               &param->fp_comp_start_units, 0);
-                               if (rc != 0) {
-                                       fprintf(stderr, "error: %s bad "
-                                               "component start '%s'.\n",
-                                               argv[0], tmp);
-                                       return CMD_HELP;
-                               } else {
-                                       param->fp_check_comp_start = 1;
-                               }
-                       } else {
-                               param->fp_verbose |= VERBOSE_COMP_START;
-                               param->fp_max_depth = 0;
-                       }
-                       break;
-               case 'd':
-                       param->fp_max_depth = 0;
-                       break;
-               case 'D':
-                       param->fp_get_default_lmv = 1;
-                       break;
-               case 'E':
-                       if (optarg != NULL) {
-                               tmp = optarg;
-                               if (tmp[0] == '+') {
-                                       param->fp_comp_end_sign = -1;
-                                       tmp++;
-                               } else if (tmp[0] == '-') {
-                                       param->fp_comp_end_sign = 1;
-                                       tmp++;
-                               }
-
-                               if (arg_is_eof(tmp)) {
-                                       param->fp_comp_end = LUSTRE_EOF;
-                                       param->fp_comp_end_units = 1;
-                                       rc = 0;
-                               } else {
-                                       rc = llapi_parse_size(tmp,
-                                               &param->fp_comp_end,
-                                               &param->fp_comp_end_units, 0);
-                               }
-                               if (rc != 0) {
-                                       fprintf(stderr, "error: %s bad "
-                                               "component end '%s'.\n",
-                                               argv[0], tmp);
-                                       return CMD_HELP;
-                               }
-                               param->fp_check_comp_end = 1;
-                       } else {
-                               param->fp_verbose |= VERBOSE_COMP_END;
-                               param->fp_max_depth = 0;
-                       }
-                       break;
-               case 'F':
-                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_DFID;
-                               param->fp_max_depth = 0;
-                       }
-                       break;
-               case 'g':
-                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_GENERATION;
-                               param->fp_max_depth = 0;
-                       }
-                       break;
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-               case 'o':
-                       fprintf(stderr, "warning: '--offset|-o' deprecated, "
-                               "use '--stripe-index|-i' instead\n");
-#endif
-               case 'i':
-#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 6, 53, 0)
-                       if (strcmp(argv[optind - 1], "--index") == 0)
-                               fprintf(stderr, "warning: '--index' deprecated"
-                                       ", use '--stripe-index' instead\n");
-#endif
-                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_OFFSET;
-                               param->fp_max_depth = 0;
-                       }
-                       break;
-               case 'I':
-                       if (optarg != NULL) {
-                               param->fp_comp_id = strtoul(optarg, &end, 0);
-                               if (*end != '\0' || param->fp_comp_id == 0 ||
-                                   param->fp_comp_id > LCME_ID_MAX) {
-                                       fprintf(stderr, "error: %s bad "
-                                               "component id '%s'\n",
-                                               argv[0], optarg);
-                                       return CMD_HELP;
-                               } else {
-                                       param->fp_check_comp_id = 1;
+       { .val = 'b',   .name = "block-softlimit",
+                                               .has_arg = required_argument },
+       { .val = 'B',   .name = "block-hardlimit",
+                                               .has_arg = required_argument },
+       { .val = 'd',   .name = "default",      .has_arg = no_argument },
+       { .val = 'g',   .name = "group",        .has_arg = required_argument },
+       { .val = 'G',   .name = "default-grp",  .has_arg = no_argument },
+       { .val = 'i',   .name = "inode-softlimit",
+                                               .has_arg = required_argument },
+       { .val = 'I',   .name = "inode-hardlimit",
+                                               .has_arg = required_argument },
+       { .val = 'p',   .name = "projid",       .has_arg = required_argument },
+       { .val = 'P',   .name = "default-prj",  .has_arg = no_argument },
+       { .val = 'u',   .name = "user",         .has_arg = required_argument },
+       { .val = 'U',   .name = "default-usr",  .has_arg = no_argument },
+       { .name = NULL } };
+       unsigned limit_mask = 0;
+       char *endptr;
+       bool use_default = false;
+       int qtype;
+
+       if (has_times_option(argc, argv))
+               return lfs_setquota_times(argc, argv);
+
+       memset(&qctl, 0, sizeof(qctl));
+       qctl.qc_cmd  = LUSTRE_Q_SETQUOTA;
+       qctl.qc_type = ALLQUOTA; /* ALLQUOTA makes no sense for setquota,
+                                 * so it can be used as a marker that qc_type
+                                 * isn't reinitialized from command line */
+
+       while ((c = getopt_long(argc, argv, "b:B:dg:Gi:I:p:Pu:U",
+               long_opts, NULL)) != -1) {
+               switch (c) {
+               case 'U':
+                       qctl.qc_cmd = LUSTRE_Q_SETDEFAULT;
+                       qtype = USRQUOTA;
+                       qctl.qc_id = 0;
+                       goto quota_type_def;
+               case 'u':
+                       qtype = USRQUOTA;
+                       rc = name2uid(&qctl.qc_id, optarg);
+                       goto quota_type;
+               case 'G':
+                       qctl.qc_cmd = LUSTRE_Q_SETDEFAULT;
+                       qtype = GRPQUOTA;
+                       qctl.qc_id = 0;
+                       goto quota_type_def;
+                case 'g':
+                       qtype = GRPQUOTA;
+                       rc = name2gid(&qctl.qc_id, optarg);
+                       goto quota_type;
+               case 'P':
+                       qctl.qc_cmd = LUSTRE_Q_SETDEFAULT;
+                       qtype = PRJQUOTA;
+                       qctl.qc_id = 0;
+                       goto quota_type_def;
+               case 'p':
+                       qtype = PRJQUOTA;
+                       rc = name2projid(&qctl.qc_id, optarg);
+quota_type:
+                       if (rc) {
+                               qctl.qc_id = strtoul(optarg, &endptr, 10);
+                               if (*endptr != '\0') {
+                                       fprintf(stderr, "%s setquota: invalid"
+                                               " id '%s'\n", progname, optarg);
+                                       return -1;
                                }
-                       } else {
-                               param->fp_max_depth = 0;
-                               param->fp_verbose |= VERBOSE_COMP_ID;
                        }
-                       break;
-               case 'L':
-                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_LAYOUT;
-                               param->fp_max_depth = 0;
+
+                       if (qctl.qc_id == 0) {
+                               fprintf(stderr, "%s setquota: can't set quota"
+                                       " for root usr/group/project.\n",
+                                       progname);
+                               return -1;
                        }
-                       break;
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-               case 'M':
-#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 11, 53, 0)
-                       fprintf(stderr, "warning: '-M' deprecated"
-                               ", use '-m' instead\n");
-#endif
-#endif
-               case 'm':
-                       if (!(param->fp_verbose & VERBOSE_DETAIL))
-                               param->fp_max_depth = 0;
-                       param->fp_verbose |= VERBOSE_MDTINDEX;
-                       break;
-               case 'O':
-                       if (param->fp_obd_uuid) {
+
+quota_type_def:
+                       if (qctl.qc_type != ALLQUOTA) {
                                fprintf(stderr,
-                                       "error: %s: only one obduuid allowed",
-                                       argv[0]);
+                                       "%s setquota: only one of -u, -U, -g,"
+                                       " -G, -p or -P may be specified\n",
+                                       progname);
                                return CMD_HELP;
                        }
-                       param->fp_obd_uuid = (struct obd_uuid *)optarg;
+                       qctl.qc_type = qtype;
                        break;
-               case 'p':
-                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_POOL;
-                               param->fp_max_depth = 0;
-                       }
+               case 'd':
+                       qctl.qc_cmd = LUSTRE_Q_SETDEFAULT;
+                       use_default = true;
                        break;
-               case 'q':
-                       param->fp_quiet++;
+               case 'b':
+                       ARG2ULL(dqb->dqb_bsoftlimit, optarg, 1024);
+                       dqb->dqb_bsoftlimit >>= 10;
+                       limit_mask |= BSLIMIT;
+                       if (dqb->dqb_bsoftlimit &&
+                           dqb->dqb_bsoftlimit <= 1024) /* <= 1M? */
+                               fprintf(stderr,
+                                       "%s setquota: warning: block softlimit '%llu' smaller than minimum qunit size\n"
+                                       "See '%s help setquota' or Lustre manual for details\n",
+                                       progname, dqb->dqb_bsoftlimit,
+                                       progname);
                        break;
-               case 'r':
-                       param->fp_recursive = 1;
+               case 'B':
+                       ARG2ULL(dqb->dqb_bhardlimit, optarg, 1024);
+                       dqb->dqb_bhardlimit >>= 10;
+                       limit_mask |= BHLIMIT;
+                       if (dqb->dqb_bhardlimit &&
+                           dqb->dqb_bhardlimit <= 1024) /* <= 1M? */
+                               fprintf(stderr,
+                                       "%s setquota: warning: block hardlimit '%llu' smaller than minimum qunit size\n"
+                                       "See '%s help setquota' or Lustre manual for details\n",
+                                       progname, dqb->dqb_bhardlimit,
+                                       progname);
                        break;
-               case 'R':
-                       param->fp_raw = 1;
+               case 'i':
+                       ARG2ULL(dqb->dqb_isoftlimit, optarg, 1);
+                       limit_mask |= ISLIMIT;
+                       if (dqb->dqb_isoftlimit &&
+                           dqb->dqb_isoftlimit <= 1024) /* <= 1K inodes? */
+                               fprintf(stderr,
+                                       "%s setquota: warning: inode softlimit '%llu' smaller than minimum qunit size\n"
+                                       "See '%s help setquota' or Lustre manual for details\n",
+                                       progname, dqb->dqb_isoftlimit,
+                                       progname);
                        break;
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0)
-               case 's':
-                       fprintf(stderr, "warning: '--size|-s' deprecated, "
-                               "use '--stripe-size|-S' instead\n");
-#endif /* LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 9, 59, 0) */
-               case 'S':
-                       if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_SIZE;
-                               param->fp_max_depth = 0;
+               case 'I':
+                       ARG2ULL(dqb->dqb_ihardlimit, optarg, 1);
+                       limit_mask |= IHLIMIT;
+                       if (dqb->dqb_ihardlimit &&
+                           dqb->dqb_ihardlimit <= 1024) /* <= 1K inodes? */
+                               fprintf(stderr,
+                                       "%s setquota: warning: inode hardlimit '%llu' smaller than minimum qunit size\n"
+                                       "See '%s help setquota' or Lustre manual for details\n",
+                                       progname, dqb->dqb_ihardlimit,
+                                       progname);
+                       break;
+               default:
+                       fprintf(stderr,
+                               "%s setquota: unrecognized option '%s'\n",
+                               progname, argv[optind - 1]);
+                       return CMD_HELP;
+               }
+       }
+
+       if (qctl.qc_type == ALLQUOTA) {
+               fprintf(stderr,
+                       "%s setquota: either -u or -g must be specified\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       if (!use_default && limit_mask == 0) {
+               fprintf(stderr,
+                       "%s setquota: at least one limit must be specified\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       if (use_default && limit_mask != 0) {
+               fprintf(stderr,
+                       "%s setquota: limits should not be specified when"
+                       " using default quota\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       if (use_default && qctl.qc_id == 0) {
+               fprintf(stderr,
+                       "%s setquota: can not set default quota for root"
+                       " user/group/project\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       if (optind != argc - 1) {
+               fprintf(stderr,
+                       "%s setquota: filesystem not specified or unexpected argument '%s'\n",
+                       progname, argv[optind]);
+               return CMD_HELP;
+       }
+
+        mnt = argv[optind];
+
+       if (use_default) {
+               dqb->dqb_bhardlimit = 0;
+               dqb->dqb_bsoftlimit = 0;
+               dqb->dqb_ihardlimit = 0;
+               dqb->dqb_isoftlimit = 0;
+               dqb->dqb_itime = 0;
+               dqb->dqb_btime = 0;
+               dqb->dqb_valid |= QIF_LIMITS | QIF_TIMES;
+       } else if ((!(limit_mask & BHLIMIT) ^ !(limit_mask & BSLIMIT)) ||
+                  (!(limit_mask & IHLIMIT) ^ !(limit_mask & ISLIMIT))) {
+               /* sigh, we can't just set blimits/ilimits */
+               struct if_quotactl tmp_qctl = {.qc_cmd  = LUSTRE_Q_GETQUOTA,
+                                              .qc_type = qctl.qc_type,
+                                              .qc_id   = qctl.qc_id};
+
+               rc = llapi_quotactl(mnt, &tmp_qctl);
+               if (rc < 0)
+                       return rc;
+
+               if (!(limit_mask & BHLIMIT))
+                       dqb->dqb_bhardlimit = tmp_qctl.qc_dqblk.dqb_bhardlimit;
+               if (!(limit_mask & BSLIMIT))
+                       dqb->dqb_bsoftlimit = tmp_qctl.qc_dqblk.dqb_bsoftlimit;
+               if (!(limit_mask & IHLIMIT))
+                       dqb->dqb_ihardlimit = tmp_qctl.qc_dqblk.dqb_ihardlimit;
+               if (!(limit_mask & ISLIMIT))
+                       dqb->dqb_isoftlimit = tmp_qctl.qc_dqblk.dqb_isoftlimit;
+
+               /* Keep grace times if we have got no softlimit arguments */
+               if ((limit_mask & BHLIMIT) && !(limit_mask & BSLIMIT)) {
+                       dqb->dqb_valid |= QIF_BTIME;
+                       dqb->dqb_btime = tmp_qctl.qc_dqblk.dqb_btime;
+               }
+
+               if ((limit_mask & IHLIMIT) && !(limit_mask & ISLIMIT)) {
+                       dqb->dqb_valid |= QIF_ITIME;
+                       dqb->dqb_itime = tmp_qctl.qc_dqblk.dqb_itime;
+               }
+       }
+
+       dqb->dqb_valid |= (limit_mask & (BHLIMIT | BSLIMIT)) ? QIF_BLIMITS : 0;
+       dqb->dqb_valid |= (limit_mask & (IHLIMIT | ISLIMIT)) ? QIF_ILIMITS : 0;
+
+       rc = llapi_quotactl(mnt, &qctl);
+       if (rc) {
+               if (*obd_type)
+                       fprintf(stderr,
+                               "%s setquota: cannot quotactl '%s' '%s': %s",
+                               progname, obd_type,
+                               obd_uuid2str(&qctl.obd_uuid), strerror(-rc));
+               return rc;
+       }
+
+       return 0;
+}
+
+/* Converts seconds value into format string
+ * result is returned in buf
+ * Notes:
+ *        1. result is in descenting order: 1w2d3h4m5s
+ *        2. zero fields are not filled (except for p. 3): 5d1s
+ *        3. zero seconds value is presented as "0s"
+ */
+static char * __sec2str(time_t seconds, char *buf)
+{
+        const char spec[] = "smhdw";
+        const unsigned long mult[] = {1, 60, 60*60, 24*60*60, 7*24*60*60};
+        unsigned long c;
+        char *tail = buf;
+        int i;
+
+        for (i = sizeof(mult) / sizeof(mult[0]) - 1 ; i >= 0; i--) {
+                c = seconds / mult[i];
+
+                if (c > 0 || (i == 0 && buf == tail))
+                        tail += snprintf(tail, 40-(tail-buf), "%lu%c", c, spec[i]);
+
+                seconds %= mult[i];
+        }
+
+        return tail;
+}
+
+static void sec2str(time_t seconds, char *buf, int rc)
+{
+        char *tail = buf;
+
+        if (rc)
+                *tail++ = '[';
+
+        tail = __sec2str(seconds, tail);
+
+        if (rc && tail - buf < 39) {
+                *tail++ = ']';
+                *tail++ = 0;
+        }
+}
+
+static void diff2str(time_t seconds, char *buf, time_t now)
+{
+
+        buf[0] = 0;
+        if (!seconds)
+                return;
+        if (seconds <= now) {
+                strcpy(buf, "none");
+                return;
+        }
+        __sec2str(seconds - now, buf);
+}
+
+static void print_quota_title(char *name, struct if_quotactl *qctl,
+                             bool human_readable, bool show_default)
+{
+       if (show_default) {
+               printf("Disk default %s quota:\n", qtype_name(qctl->qc_type));
+               printf("%15s %8s%8s%8s %8s%8s%8s\n",
+                      "Filesystem", "bquota", "blimit", "bgrace",
+                      "iquota", "ilimit", "igrace");
+       } else {
+               printf("Disk quotas for %s %s (%cid %u):\n",
+                      qtype_name(qctl->qc_type), name,
+                      *qtype_name(qctl->qc_type), qctl->qc_id);
+               printf("%15s%8s %7s%8s%8s%8s %7s%8s%8s\n",
+                      "Filesystem", human_readable ? "used" : "kbytes",
+                      "quota", "limit", "grace",
+                      "files", "quota", "limit", "grace");
+       }
+}
+
+static void kbytes2str(__u64 num, char *buf, int buflen, bool h)
+{
+       if (!h) {
+               snprintf(buf, buflen, "%ju", (uintmax_t)num);
+       } else {
+               if (num >> 40)
+                       snprintf(buf, buflen, "%5.4gP",
+                                (double)num / ((__u64)1 << 40));
+               else if (num >> 30)
+                       snprintf(buf, buflen, "%5.4gT",
+                                (double)num / (1 << 30));
+               else if (num >> 20)
+                       snprintf(buf, buflen, "%5.4gG",
+                                (double)num / (1 << 20));
+               else if (num >> 10)
+                       snprintf(buf, buflen, "%5.4gM",
+                                (double)num / (1 << 10));
+               else
+                       snprintf(buf, buflen, "%ju%s", (uintmax_t)num, "k");
+       }
+}
+
+#define STRBUF_LEN     32
+static void print_quota(char *mnt, struct if_quotactl *qctl, int type,
+                       int rc, bool h, bool show_default)
+{
+       time_t now;
+
+       time(&now);
+
+       if (qctl->qc_cmd == LUSTRE_Q_GETQUOTA || qctl->qc_cmd == Q_GETOQUOTA ||
+           qctl->qc_cmd == LUSTRE_Q_GETDEFAULT) {
+               int bover = 0, iover = 0;
+               struct obd_dqblk *dqb = &qctl->qc_dqblk;
+               char numbuf[3][STRBUF_LEN];
+               char timebuf[40];
+               char strbuf[STRBUF_LEN];
+
+               if (dqb->dqb_bhardlimit &&
+                   lustre_stoqb(dqb->dqb_curspace) >= dqb->dqb_bhardlimit) {
+                        bover = 1;
+                } else if (dqb->dqb_bsoftlimit && dqb->dqb_btime) {
+                        if (dqb->dqb_btime > now) {
+                                bover = 2;
+                        } else {
+                                bover = 3;
+                        }
+                }
+
+                if (dqb->dqb_ihardlimit &&
+                    dqb->dqb_curinodes >= dqb->dqb_ihardlimit) {
+                        iover = 1;
+                } else if (dqb->dqb_isoftlimit && dqb->dqb_itime) {
+                       if (dqb->dqb_itime > now) {
+                               iover = 2;
+                       } else {
+                               iover = 3;
                        }
-                       break;
-               case 'v':
-                       param->fp_verbose = VERBOSE_DEFAULT | VERBOSE_DETAIL;
-                       break;
-               case 'y':
-                       param->fp_yaml = 1;
-                       break;
-               default:
-                       return CMD_HELP;
-               }
-       }
+                }
 
-       if (optind >= argc)
-               return CMD_HELP;
 
-       if (param->fp_recursive)
-               param->fp_max_depth = -1;
-       else if (param->fp_verbose & VERBOSE_DETAIL)
-               param->fp_max_depth = 1;
+               if (strlen(mnt) > 15)
+                       printf("%s\n%15s", mnt, "");
+               else
+                       printf("%15s", mnt);
 
-       if (!param->fp_verbose)
-               param->fp_verbose = VERBOSE_DEFAULT;
-       if (param->fp_quiet)
-               param->fp_verbose = VERBOSE_OBJID;
+               if (bover)
+                       diff2str(dqb->dqb_btime, timebuf, now);
+               else if (show_default)
+                       snprintf(timebuf, sizeof(timebuf), "%llu",
+                                dqb->dqb_btime);
 
-       do {
-               rc = llapi_getstripe(argv[optind], param);
-       } while (++optind < argc && !rc);
+               kbytes2str(lustre_stoqb(dqb->dqb_curspace),
+                          strbuf, sizeof(strbuf), h);
+               if (rc == -EREMOTEIO)
+                       sprintf(numbuf[0], "%s*", strbuf);
+               else
+                       sprintf(numbuf[0], (dqb->dqb_valid & QIF_SPACE) ?
+                               "%s" : "[%s]", strbuf);
 
-       if (rc)
-               fprintf(stderr, "error: %s failed for %s.\n",
-                       argv[0], argv[optind - 1]);
-       return rc;
-}
+               kbytes2str(dqb->dqb_bsoftlimit, strbuf, sizeof(strbuf), h);
+               if (type == QC_GENERAL)
+                       sprintf(numbuf[1], (dqb->dqb_valid & QIF_BLIMITS) ?
+                               "%s" : "[%s]", strbuf);
+               else
+                       sprintf(numbuf[1], "%s", "-");
 
-static int lfs_tgts(int argc, char **argv)
-{
-        char mntdir[PATH_MAX] = {'\0'}, path[PATH_MAX] = {'\0'};
-        struct find_param param;
-        int index = 0, rc=0;
+               kbytes2str(dqb->dqb_bhardlimit, strbuf, sizeof(strbuf), h);
+               sprintf(numbuf[2], (dqb->dqb_valid & QIF_BLIMITS) ?
+                       "%s" : "[%s]", strbuf);
 
-        if (argc > 2)
-                return CMD_HELP;
+               if (show_default)
+                       printf(" %6s %7s %7s", numbuf[1], numbuf[2], timebuf);
+               else
+                       printf(" %7s%c %6s %7s %7s",
+                              numbuf[0], bover ? '*' : ' ', numbuf[1],
+                              numbuf[2], bover > 1 ? timebuf : "-");
 
-        if (argc == 2 && !realpath(argv[1], path)) {
-                rc = -errno;
-                fprintf(stderr, "error: invalid path '%s': %s\n",
-                        argv[1], strerror(-rc));
-                return rc;
-        }
 
-        while (!llapi_search_mounts(path, index++, mntdir, NULL)) {
-                /* Check if we have a mount point */
-                if (mntdir[0] == '\0')
-                        continue;
+               if (iover)
+                       diff2str(dqb->dqb_itime, timebuf, now);
+               else if (show_default)
+                       snprintf(timebuf, sizeof(timebuf), "%llu",
+                                dqb->dqb_itime);
 
-                memset(&param, 0, sizeof(param));
-                if (!strcmp(argv[0], "mdts"))
-                       param.fp_get_lmv = 1;
+               snprintf(numbuf[0], sizeof(numbuf),
+                        (dqb->dqb_valid & QIF_INODES) ? "%ju" : "[%ju]",
+                        (uintmax_t)dqb->dqb_curinodes);
 
-                rc = llapi_ostlist(mntdir, &param);
-                if (rc) {
-                        fprintf(stderr, "error: %s: failed on %s\n",
-                                argv[0], mntdir);
-                }
-                if (path[0] != '\0')
-                        break;
-                memset(mntdir, 0, PATH_MAX);
-        }
+               if (type == QC_GENERAL)
+                       sprintf(numbuf[1], (dqb->dqb_valid & QIF_ILIMITS) ?
+                               "%ju" : "[%ju]",
+                               (uintmax_t)dqb->dqb_isoftlimit);
+               else
+                       sprintf(numbuf[1], "%s", "-");
 
-        return rc;
+               sprintf(numbuf[2], (dqb->dqb_valid & QIF_ILIMITS) ?
+                       "%ju" : "[%ju]", (uintmax_t)dqb->dqb_ihardlimit);
+
+               if (show_default)
+                       printf(" %6s %7s %7s", numbuf[1], numbuf[2], timebuf);
+               else if (type != QC_OSTIDX)
+                       printf(" %7s%c %6s %7s %7s",
+                              numbuf[0], iover ? '*' : ' ', numbuf[1],
+                              numbuf[2], iover > 1 ? timebuf : "-");
+               else
+                       printf(" %7s %7s %7s %7s", "-", "-", "-", "-");
+               printf("\n");
+
+        } else if (qctl->qc_cmd == LUSTRE_Q_GETINFO ||
+                   qctl->qc_cmd == Q_GETOINFO) {
+                char bgtimebuf[40];
+                char igtimebuf[40];
+
+                sec2str(qctl->qc_dqinfo.dqi_bgrace, bgtimebuf, rc);
+                sec2str(qctl->qc_dqinfo.dqi_igrace, igtimebuf, rc);
+                printf("Block grace time: %s; Inode grace time: %s\n",
+                       bgtimebuf, igtimebuf);
+        }
 }
 
-static int lfs_getstripe(int argc, char **argv)
+static int print_obd_quota(char *mnt, struct if_quotactl *qctl, int is_mdt,
+                          bool h, __u64 *total)
 {
-       struct find_param param = { 0 };
+        int rc = 0, rc1 = 0, count = 0;
+        __u32 valid = qctl->qc_valid;
 
-       param.fp_max_depth = 1;
-       return lfs_getstripe_internal(argc, argv, &param);
+        rc = llapi_get_obd_count(mnt, &count, is_mdt);
+        if (rc) {
+                fprintf(stderr, "can not get %s count: %s\n",
+                        is_mdt ? "mdt": "ost", strerror(-rc));
+                return rc;
+        }
+
+        for (qctl->qc_idx = 0; qctl->qc_idx < count; qctl->qc_idx++) {
+                qctl->qc_valid = is_mdt ? QC_MDTIDX : QC_OSTIDX;
+                rc = llapi_quotactl(mnt, qctl);
+                if (rc) {
+                       /* It is remote client case. */
+                       if (rc == -EOPNOTSUPP) {
+                                rc = 0;
+                                goto out;
+                        }
+
+                        if (!rc1)
+                                rc1 = rc;
+                        fprintf(stderr, "quotactl %s%d failed.\n",
+                                is_mdt ? "mdt": "ost", qctl->qc_idx);
+                        continue;
+                }
+
+               print_quota(obd_uuid2str(&qctl->obd_uuid), qctl,
+                           qctl->qc_valid, 0, h, false);
+               *total += is_mdt ? qctl->qc_dqblk.dqb_ihardlimit :
+                                  qctl->qc_dqblk.dqb_bhardlimit;
+       }
+out:
+       qctl->qc_valid = valid;
+       return rc ? : rc1;
 }
 
-/* functions */
-static int lfs_getdirstripe(int argc, char **argv)
+static int get_print_quota(char *mnt, char *name, struct if_quotactl *qctl,
+                          int verbose, int quiet, bool human_readable,
+                          bool show_default)
 {
-       struct find_param param = { 0 };
-       struct option long_opts[] = {
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-       { .val = 'c',   .name = "mdt-count",    .has_arg = no_argument },
-#endif
-       { .val = 'D',   .name = "default",      .has_arg = no_argument },
-       { .val = 'H',   .name = "mdt-hash",     .has_arg = no_argument },
-       { .val = 'i',   .name = "mdt-index",    .has_arg = no_argument },
-       { .val = 'O',   .name = "obd",          .has_arg = required_argument },
-       { .val = 'r',   .name = "recursive",    .has_arg = no_argument },
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-       { .val = 't',   .name = "mdt-hash",     .has_arg = no_argument },
-#endif
-       { .val = 'T',   .name = "mdt-count",    .has_arg = no_argument },
-       { .val = 'y',   .name = "yaml",         .has_arg = no_argument },
-       { .name = NULL } };
-       int c, rc;
-
-       param.fp_get_lmv = 1;
+       int rc1 = 0, rc2 = 0, rc3 = 0;
+       char *obd_type = (char *)qctl->obd_type;
+       char *obd_uuid = (char *)qctl->obd_uuid.uuid;
+       __u64 total_ialloc = 0, total_balloc = 0;
+       bool use_default_for_blk = false;
+       bool use_default_for_file = false;
+       int inacc;
 
-       while ((c = getopt_long(argc, argv,
-                               "cDHiO:rtTy", long_opts, NULL)) != -1)
-       {
-               switch (c) {
-               case 'O':
-                       if (param.fp_obd_uuid) {
-                               fprintf(stderr,
-                                       "error: %s: only one obduuid allowed",
-                                       argv[0]);
-                               return CMD_HELP;
-                       }
-                       param.fp_obd_uuid = (struct obd_uuid *)optarg;
-                       break;
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-               case 'c':
-#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 10, 50, 0)
-                       fprintf(stderr, "warning: '-c' deprecated"
-                               ", use '-T' instead\n");
-#endif
-#endif
-               case 'T':
-                       param.fp_verbose |= VERBOSE_COUNT;
-                       break;
-               case 'i':
-                       param.fp_verbose |= VERBOSE_OFFSET;
-                       break;
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-               case 't':
-#endif
-               case 'H':
-                       param.fp_verbose |= VERBOSE_HASH_TYPE;
-                       break;
-               case 'D':
-                       param.fp_get_default_lmv = 1;
-                       break;
-               case 'r':
-                       param.fp_recursive = 1;
-                       break;
-               case 'y':
-                       param.fp_yaml = 1;
-                       break;
+       rc1 = llapi_quotactl(mnt, qctl);
+       if (rc1 < 0) {
+               switch (rc1) {
+               case -ESRCH:
+                       fprintf(stderr, "%s quotas are not enabled.\n",
+                               qtype_name(qctl->qc_type));
+                       goto out;
+               case -EPERM:
+                       fprintf(stderr, "Permission denied.\n");
+               case -ENODEV:
+               case -ENOENT:
+                       /* We already got error message. */
+                       goto out;
                default:
-                       return CMD_HELP;
+                       fprintf(stderr, "Unexpected quotactl error: %s\n",
+                               strerror(-rc1));
                }
        }
 
-       if (optind >= argc)
-               return CMD_HELP;
+       if (!show_default && qctl->qc_id == 0) {
+               qctl->qc_dqblk.dqb_bhardlimit = 0;
+               qctl->qc_dqblk.dqb_bsoftlimit = 0;
+               qctl->qc_dqblk.dqb_ihardlimit = 0;
+               qctl->qc_dqblk.dqb_isoftlimit = 0;
+               qctl->qc_dqblk.dqb_btime = 0;
+               qctl->qc_dqblk.dqb_itime = 0;
+               qctl->qc_dqblk.dqb_valid |= QIF_LIMITS | QIF_TIMES;
+       }
 
-       if (param.fp_recursive)
-               param.fp_max_depth = -1;
+       if (qctl->qc_dqblk.dqb_valid & QIF_BTIME &&
+           LQUOTA_FLAG(qctl->qc_dqblk.dqb_btime) & LQUOTA_FLAG_DEFAULT) {
+               use_default_for_blk = true;
+               qctl->qc_dqblk.dqb_btime &= LQUOTA_GRACE_MASK;
+       }
 
-       if (!param.fp_verbose)
-               param.fp_verbose = VERBOSE_DEFAULT;
+       if (qctl->qc_dqblk.dqb_valid & QIF_ITIME &&
+           LQUOTA_FLAG(qctl->qc_dqblk.dqb_itime) & LQUOTA_FLAG_DEFAULT) {
+               use_default_for_file = true;
+               qctl->qc_dqblk.dqb_itime &= LQUOTA_GRACE_MASK;
+       }
+
+       if ((qctl->qc_cmd == LUSTRE_Q_GETQUOTA ||
+            qctl->qc_cmd == LUSTRE_Q_GETDEFAULT) && !quiet)
+               print_quota_title(name, qctl, human_readable, show_default);
+
+       if (rc1 && *obd_type)
+               fprintf(stderr, "%s %s ", obd_type, obd_uuid);
+
+       if (qctl->qc_valid != QC_GENERAL)
+               mnt = "";
+
+       inacc = (qctl->qc_cmd == LUSTRE_Q_GETQUOTA) &&
+               ((qctl->qc_dqblk.dqb_valid & (QIF_LIMITS|QIF_USAGE)) !=
+                (QIF_LIMITS|QIF_USAGE));
+
+       print_quota(mnt, qctl, QC_GENERAL, rc1, human_readable, show_default);
+
+       if (!show_default && verbose &&
+           qctl->qc_valid == QC_GENERAL && qctl->qc_cmd != LUSTRE_Q_GETINFO) {
+               char strbuf[STRBUF_LEN];
+
+               rc2 = print_obd_quota(mnt, qctl, 1, human_readable,
+                                     &total_ialloc);
+               rc3 = print_obd_quota(mnt, qctl, 0, human_readable,
+                                     &total_balloc);
+               kbytes2str(total_balloc, strbuf, sizeof(strbuf),
+                          human_readable);
+               printf("Total allocated inode limit: %ju, total "
+                      "allocated block limit: %s\n", (uintmax_t)total_ialloc,
+                      strbuf);
+       }
+
+       if (use_default_for_blk)
+               printf("%cid %u is using default block quota setting\n",
+                      *qtype_name(qctl->qc_type), qctl->qc_id);
+
+       if (use_default_for_file)
+               printf("%cid %u is using default file quota setting\n",
+                      *qtype_name(qctl->qc_type), qctl->qc_id);
 
-       do {
-               rc = llapi_getstripe(argv[optind], &param);
-       } while (++optind < argc && !rc);
+       if (rc1 || rc2 || rc3 || inacc)
+               printf("Some errors happened when getting quota info. "
+                      "Some devices may be not working or deactivated. "
+                      "The data in \"[]\" is inaccurate.\n");
+out:
+       return rc1;
 
-       if (rc)
-               fprintf(stderr, "error: %s failed for %s.\n",
-                       argv[0], argv[optind - 1]);
-       return rc;
 }
 
-/* functions */
-static int lfs_setdirstripe(int argc, char **argv)
+static int lfs_project(int argc, char **argv)
 {
-       char                    *dname;
-       int                     result;
-       unsigned int            stripe_offset = -1;
-       unsigned int            stripe_count = 1;
-       enum lmv_hash_type      hash_type;
-       char                    *end;
-       int                     c;
-       char                    *stripe_offset_opt = NULL;
-       char                    *stripe_count_opt = NULL;
-       char                    *stripe_hash_opt = NULL;
-       char                    *mode_opt = NULL;
-       bool                    default_stripe = false;
-       mode_t                  mode = S_IRWXU | S_IRWXG | S_IRWXO;
-       mode_t                  previous_mode = 0;
-       bool                    delete = false;
+       int ret = 0, err = 0, c, i;
+       struct project_handle_control phc = { 0 };
+       enum lfs_project_ops_t op;
 
-       struct option long_opts[] = {
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-       { .val = 'c',   .name = "count",        .has_arg = required_argument },
-#endif
-       { .val = 'c',   .name = "mdt-count",    .has_arg = required_argument },
-       { .val = 'd',   .name = "delete",       .has_arg = no_argument },
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-       { .val = 'i',   .name = "index",        .has_arg = required_argument },
-#endif
-       { .val = 'i',   .name = "mdt-index",    .has_arg = required_argument },
-       { .val = 'm',   .name = "mode",         .has_arg = required_argument },
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-       { .val = 't',   .name = "hash-type",    .has_arg = required_argument },
-       { .val = 't',   .name = "mdt-hash",     .has_arg = required_argument },
-#endif
-               {"mdt-hash",    required_argument, 0, 'H'},
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-       { .val = 'D',   .name = "default_stripe",
-                                               .has_arg = no_argument },
-#endif
-       { .val = 'D',   .name = "default",      .has_arg = no_argument },
-       { .name = NULL } };
+       phc.newline = true;
+       phc.assign_projid = false;
+       /* default action */
+       op = LFS_PROJECT_LIST;
 
-       while ((c = getopt_long(argc, argv, "c:dDi:H:m:t:", long_opts,
-                               NULL)) >= 0) {
+       while ((c = getopt(argc, argv, "p:cCsdkr0")) != -1) {
                switch (c) {
-               case 0:
-                       /* Long options. */
-                       break;
                case 'c':
-#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 11, 53, 0)
-                       if (strcmp(argv[optind - 1], "--count") == 0)
+                       if (op != LFS_PROJECT_LIST) {
                                fprintf(stderr,
-                                       "%s %s: warning: '--count' deprecated, use '--mdt-count' instead\n",
-                                       progname, argv[0]);
-#endif
-                       stripe_count_opt = optarg;
+                                       "%s: cannot specify '-c' '-C' '-s' together\n",
+                                       progname);
+                               return CMD_HELP;
+                       }
+
+                       op = LFS_PROJECT_CHECK;
+                       break;
+               case 'C':
+                       if (op != LFS_PROJECT_LIST) {
+                               fprintf(stderr,
+                                       "%s: cannot specify '-c' '-C' '-s' together\n",
+                                       progname);
+                               return CMD_HELP;
+                       }
+
+                       op = LFS_PROJECT_CLEAR;
+                       break;
+               case 's':
+                       if (op != LFS_PROJECT_LIST) {
+                               fprintf(stderr,
+                                       "%s: cannot specify '-c' '-C' '-s' together\n",
+                                       progname);
+                               return CMD_HELP;
+                       }
+
+                       phc.set_inherit = true;
+                       op = LFS_PROJECT_SET;
                        break;
                case 'd':
-                       delete = true;
-                       default_stripe = true;
+                       phc.dironly = true;
                        break;
-               case 'D':
-                       default_stripe = true;
+               case 'k':
+                       phc.keep_projid = true;
                        break;
-               case 'i':
-#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 11, 53, 0)
-                       if (strcmp(argv[optind - 1], "--index") == 0)
-                               fprintf(stderr,
-                                       "%s %s: warning: '--index' deprecated, use '--mdt-index' instead\n",
-                                       progname, argv[0]);
-#endif
-                       stripe_offset_opt = optarg;
+               case 'r':
+                       phc.recursive = true;
                        break;
-               case 'm':
-                       mode_opt = optarg;
+               case 'p':
+                       phc.projid = strtoul(optarg, NULL, 0);
+                       phc.assign_projid = true;
+
                        break;
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
-               case 't':
-#endif
-               case 'H':
-#if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 11, 53, 0)
-                       if (strcmp(argv[optind - 1], "--hash-type") == 0)
-                               fprintf(stderr,
-                                       "%s %s: warning: '--hash-type' deprecated, use '--mdt-hash' instead\n",
-                                       progname, argv[0]);
-#endif
-                       stripe_hash_opt = optarg;
+               case '0':
+                       phc.newline = false;
                        break;
                default:
-                       fprintf(stderr, "%s %s: unrecognized option '%s'\n",
-                               progname, argv[0], argv[optind - 1]);
+                       fprintf(stderr, "%s: invalid option '%c'\n",
+                               progname, optopt);
                        return CMD_HELP;
                }
        }
 
-       if (optind == argc) {
-               fprintf(stderr, "%s %s: DIR must be specified\n",
-                       progname, argv[0]);
-               return CMD_HELP;
-       }
-
-       if (!delete && stripe_offset_opt == NULL && stripe_count_opt == NULL) {
-               fprintf(stderr,
-                       "%s %s: stripe offset and count must be specified\n",
-                       progname, argv[0]);
-               return CMD_HELP;
+       if (phc.assign_projid && op == LFS_PROJECT_LIST) {
+               op = LFS_PROJECT_SET;
+               phc.set_projid = true;
+       } else if (phc.assign_projid && op == LFS_PROJECT_SET) {
+               phc.set_projid = true;
        }
 
-       if (stripe_offset_opt != NULL) {
-               /* get the stripe offset */
-               stripe_offset = strtoul(stripe_offset_opt, &end, 0);
-               if (*end != '\0') {
+       switch (op) {
+       case LFS_PROJECT_CHECK:
+               if (phc.keep_projid) {
                        fprintf(stderr,
-                               "%s %s: bad stripe offset '%s'\n",
-                               progname, argv[0], stripe_offset_opt);
+                               "%s: '-k' is useless together with '-c'\n",
+                               progname);
                        return CMD_HELP;
                }
-       }
-
-       if (delete) {
-               if (stripe_offset_opt != NULL || stripe_count_opt != NULL) {
+               break;
+       case LFS_PROJECT_CLEAR:
+               if (!phc.newline) {
                        fprintf(stderr,
-                               "%s %s: cannot specify -d with -c or -i options\n",
-                               progname, argv[0]);
+                               "%s: '-0' is useless together with '-C'\n",
+                               progname);
+                       return CMD_HELP;
+               }
+               if (phc.assign_projid) {
+                       fprintf(stderr,
+                               "%s: '-p' is useless together with '-C'\n",
+                               progname);
+                       return CMD_HELP;
+               }
+               break;
+       case LFS_PROJECT_SET:
+               if (!phc.newline) {
+                       fprintf(stderr,
+                               "%s: '-0' is useless together with '-s'\n",
+                               progname);
+                       return CMD_HELP;
+               }
+               if (phc.keep_projid) {
+                       fprintf(stderr,
+                               "%s: '-k' is useless together with '-s'\n",
+                               progname);
+                       return CMD_HELP;
+               }
+               break;
+       default:
+               if (!phc.newline) {
+                       fprintf(stderr,
+                               "%s: '-0' is useless for list operations\n",
+                               progname);
                        return CMD_HELP;
-               } else {
-                       stripe_count = 0;
                }
+               break;
        }
 
+       argv += optind;
+       argc -= optind;
+       if (argc == 0) {
+               fprintf(stderr, "%s: missing file or directory target(s)\n",
+                       progname);
+               return CMD_HELP;
+       }
 
-       if (mode_opt != NULL) {
-               mode = strtoul(mode_opt, &end, 8);
-               if (*end != '\0') {
-                       fprintf(stderr,
-                               "%s %s: bad MODE '%s'\n",
-                               progname, argv[0], mode_opt);
-                       return CMD_HELP;
+       for (i = 0; i < argc; i++) {
+               switch (op) {
+               case LFS_PROJECT_CHECK:
+                       err = lfs_project_check(argv[i], &phc);
+                       break;
+               case LFS_PROJECT_LIST:
+                       err = lfs_project_list(argv[i], &phc);
+                       break;
+               case LFS_PROJECT_CLEAR:
+                       err = lfs_project_clear(argv[i], &phc);
+                       break;
+               case LFS_PROJECT_SET:
+                       err = lfs_project_set(argv[i], &phc);
+                       break;
+               default:
+                       break;
                }
-               previous_mode = umask(0);
+               if (err && !ret)
+                       ret = err;
        }
 
-       if (stripe_hash_opt == NULL) {
-               hash_type = LMV_HASH_TYPE_FNV_1A_64;
-       } else {
-               hash_type = check_hashtype(stripe_hash_opt);
-               if (hash_type == 0) {
-                       fprintf(stderr, "%s %s: bad stripe hash type '%s'\n",
-                               progname, argv[0], stripe_hash_opt);
+       return ret;
+}
+
+static int lfs_quota(int argc, char **argv)
+{
+       int c;
+       char *mnt, *name = NULL;
+       struct if_quotactl qctl = { .qc_cmd = LUSTRE_Q_GETQUOTA,
+                                   .qc_type = ALLQUOTA };
+       char *obd_uuid = (char *)qctl.obd_uuid.uuid;
+       int rc = 0, rc1 = 0, verbose = 0, quiet = 0;
+       char *endptr;
+       __u32 valid = QC_GENERAL, idx = 0;
+       bool human_readable = false;
+       bool show_default = false;
+       int qtype;
+
+       while ((c = getopt(argc, argv, "gGi:I:o:pPqtuUvh")) != -1) {
+               switch (c) {
+               case 'U':
+                       show_default = true;
+               case 'u':
+                       qtype = USRQUOTA;
+                       goto quota_type;
+               case 'G':
+                       show_default = true;
+               case 'g':
+                       qtype = GRPQUOTA;
+                       goto quota_type;
+               case 'P':
+                       show_default = true;
+               case 'p':
+                       qtype = PRJQUOTA;
+quota_type:
+                       if (qctl.qc_type != ALLQUOTA) {
+                               fprintf(stderr,
+                                       "%s quota: only one of -u, -g, or -p may be specified\n",
+                                       progname);
+                               return CMD_HELP;
+                       }
+                       qctl.qc_type = qtype;
+                       break;
+                case 't':
+                        qctl.qc_cmd = LUSTRE_Q_GETINFO;
+                        break;
+                case 'o':
+                        valid = qctl.qc_valid = QC_UUID;
+                       snprintf(obd_uuid, sizeof(qctl.obd_uuid), "%s", optarg);
+                        break;
+               case 'i':
+                       valid = qctl.qc_valid = QC_MDTIDX;
+                       idx = qctl.qc_idx = atoi(optarg);
+                       if (idx == 0 && *optarg != '0') {
+                               fprintf(stderr,
+                                       "%s quota: invalid MDT index '%s'\n",
+                                       progname, optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+               case 'I':
+                       valid = qctl.qc_valid = QC_OSTIDX;
+                       idx = qctl.qc_idx = atoi(optarg);
+                       if (idx == 0 && *optarg != '0') {
+                               fprintf(stderr,
+                                       "%s quota: invalid OST index '%s'\n",
+                                       progname, optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+                case 'v':
+                        verbose = 1;
+                        break;
+                case 'q':
+                        quiet = 1;
+                        break;
+               case 'h':
+                       human_readable = true;
+                       break;
+               default:
+                       fprintf(stderr, "%s quota: unrecognized option '%s'\n",
+                               progname, argv[optind - 1]);
                        return CMD_HELP;
                }
        }
 
-       /* get the stripe count */
-       if (stripe_count_opt != NULL) {
-               stripe_count = strtoul(stripe_count_opt, &end, 0);
-               if (*end != '\0') {
+        /* current uid/gid info for "lfs quota /path/to/lustre/mount" */
+       if (qctl.qc_cmd == LUSTRE_Q_GETQUOTA && qctl.qc_type == ALLQUOTA &&
+           optind == argc - 1 && !show_default) {
+
+               qctl.qc_cmd = LUSTRE_Q_GETQUOTA;
+               qctl.qc_valid = valid;
+               qctl.qc_idx = idx;
+
+               for (qtype = USRQUOTA; qtype <= GRPQUOTA; qtype++) {
+                       qctl.qc_type = qtype;
+                       if (qtype == USRQUOTA) {
+                               qctl.qc_id = geteuid();
+                               rc = uid2name(&name, qctl.qc_id);
+                       } else {
+                               qctl.qc_id = getegid();
+                               rc = gid2name(&name, qctl.qc_id);
+                       }
+                       if (rc)
+                               name = "<unknown>";
+                       mnt = argv[optind];
+                       rc1 = get_print_quota(mnt, name, &qctl, verbose, quiet,
+                                             human_readable, show_default);
+                       if (rc1 && !rc)
+                               rc = rc1;
+               }
+               return rc;
+       /* lfs quota -u username /path/to/lustre/mount */
+       } else if (qctl.qc_cmd == LUSTRE_Q_GETQUOTA) {
+               /* options should be followed by u/g-name and mntpoint */
+               if ((!show_default && optind + 2 != argc) ||
+                   (show_default && optind + 1 != argc) ||
+                   qctl.qc_type == ALLQUOTA) {
                        fprintf(stderr,
-                               "%s %s: bad stripe count '%s'\n",
-                               progname, argv[0], stripe_count_opt);
+                               "%s quota: name and mount point must be specified\n",
+                               progname);
                        return CMD_HELP;
                }
-       }
 
-       dname = argv[optind];
-       do {
-               if (default_stripe) {
-                       result = llapi_dir_set_default_lmv_stripe(dname,
-                                                   stripe_offset, stripe_count,
-                                                   hash_type, NULL);
+               if (!show_default) {
+                       name = argv[optind++];
+                       switch (qctl.qc_type) {
+                       case USRQUOTA:
+                               rc = name2uid(&qctl.qc_id, name);
+                               break;
+                       case GRPQUOTA:
+                               rc = name2gid(&qctl.qc_id, name);
+                               break;
+                       case PRJQUOTA:
+                               rc = name2projid(&qctl.qc_id, name);
+                               break;
+                       default:
+                               rc = -ENOTSUP;
+                               break;
+                       }
                } else {
-                       result = llapi_dir_create_pool(dname, mode,
-                                                      stripe_offset,
-                                                      stripe_count, hash_type,
-                                                      NULL);
+                       qctl.qc_valid = QC_GENERAL;
+                       qctl.qc_cmd = LUSTRE_Q_GETDEFAULT;
+                       qctl.qc_id = 0;
                }
 
-               if (result) {
-                       fprintf(stderr,
-                               "%s setdirstripe: cannot create stripe dir '%s': %s\n",
-                               progname, dname, strerror(-result));
-                       break;
+               if (rc) {
+                       qctl.qc_id = strtoul(name, &endptr, 10);
+                       if (*endptr != '\0') {
+                               fprintf(stderr, "%s quota: invalid id '%s'\n",
+                                       progname, name);
+                               return CMD_HELP;
+                       }
                }
-               dname = argv[++optind];
-       } while (dname != NULL);
+       } else if (optind + 1 != argc || qctl.qc_type == ALLQUOTA) {
+               fprintf(stderr, "%s quota: missing quota info argument(s)\n",
+                       progname);
+               return CMD_HELP;
+       }
 
-       if (mode_opt != NULL)
-               umask(previous_mode);
+       mnt = argv[optind];
+       rc = get_print_quota(mnt, name, &qctl, verbose, quiet,
+                            human_readable, show_default);
+       return rc;
+}
+#endif /* HAVE_SYS_QUOTA_H! */
+
+static int flushctx_ioctl(char *mp)
+{
+        int fd, rc;
+
+        fd = open(mp, O_RDONLY);
+        if (fd == -1) {
+                fprintf(stderr, "flushctx: error open %s: %s\n",
+                        mp, strerror(errno));
+                return -1;
+        }
+
+        rc = ioctl(fd, LL_IOC_FLUSHCTX);
+        if (rc == -1)
+                fprintf(stderr, "flushctx: error ioctl %s: %s\n",
+                        mp, strerror(errno));
 
-       return result;
+        close(fd);
+        return rc;
 }
 
-/* functions */
-static int lfs_rmentry(int argc, char **argv)
+static int lfs_flushctx(int argc, char **argv)
 {
-       char *dname;
-       int   index;
-       int   result = 0;
+       int     kdestroy = 0, c;
+       char    mntdir[PATH_MAX] = {'\0'};
+       int     index = 0;
+       int     rc = 0;
 
-       if (argc <= 1) {
-               fprintf(stderr, "error: %s: missing dirname\n",
-                       argv[0]);
-               return CMD_HELP;
-       }
+        while ((c = getopt(argc, argv, "k")) != -1) {
+                switch (c) {
+                case 'k':
+                        kdestroy = 1;
+                        break;
+                default:
+                        fprintf(stderr, "error: %s: option '-%c' "
+                                        "unrecognized\n", argv[0], c);
+                        return CMD_HELP;
+                }
+        }
 
-       index = 1;
-       dname = argv[index];
-       while (dname != NULL) {
-               result = llapi_direntry_remove(dname);
-               if (result) {
-                       fprintf(stderr, "error: %s: remove dir entry '%s' "
-                               "failed\n", argv[0], dname);
-                       break;
+        if (kdestroy) {
+            if ((rc = system("kdestroy > /dev/null")) != 0) {
+                rc = WEXITSTATUS(rc);
+                fprintf(stderr, "error destroying tickets: %d, continuing\n", rc);
+            }
+        }
+
+       if (optind >= argc) {
+               /* flush for all mounted lustre fs. */
+               while (!llapi_search_mounts(NULL, index++, mntdir, NULL)) {
+                       /* Check if we have a mount point */
+                       if (mntdir[0] == '\0')
+                               continue;
+
+                       if (flushctx_ioctl(mntdir))
+                               rc = -1;
+
+                       mntdir[0] = '\0'; /* avoid matching in next loop */
                }
-               dname = argv[++index];
-       }
-       return result;
+        } else {
+                /* flush fs as specified */
+                while (optind < argc) {
+                        if (flushctx_ioctl(argv[optind++]))
+                                rc = -1;
+                }
+        }
+        return rc;
 }
 
-static int lfs_mv(int argc, char **argv)
+static int lfs_changelog(int argc, char **argv)
 {
-       struct  find_param param = {
-               .fp_max_depth = -1,
-               .fp_mdt_index = -1,
-       };
-       char   *end;
-       int     c;
-       int     rc = 0;
+       void *changelog_priv;
+       struct changelog_rec *rec;
+       long long startrec = 0, endrec = 0;
+       char *mdd;
        struct option long_opts[] = {
-       { .val = 'M',   .name = "mdt-index",    .has_arg = required_argument },
-       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
-       { .name = NULL } };
-
-       while ((c = getopt_long(argc, argv, "M:v", long_opts, NULL)) != -1) {
-               switch (c) {
-               case 'M': {
-                       param.fp_mdt_index = strtoul(optarg, &end, 0);
-                       if (*end != '\0') {
-                               fprintf(stderr, "%s: invalid MDT index'%s'\n",
-                                       argv[0], optarg);
-                               return CMD_HELP;
-                       }
-                       break;
-               }
-               case 'v': {
-                       param.fp_verbose = VERBOSE_DETAIL;
-                       break;
-               }
-               default:
-                       fprintf(stderr, "error: %s: unrecognized option '%s'\n",
-                               argv[0], argv[optind - 1]);
-                       return CMD_HELP;
-               }
-       }
-
-       if (param.fp_mdt_index == -1) {
-               fprintf(stderr, "%s: MDT index must be specified\n", argv[0]);
-               return CMD_HELP;
-       }
+               { .val = 'f', .name = "follow", .has_arg = no_argument },
+               { .name = NULL } };
+       char short_opts[] = "f";
+       int rc, follow = 0;
 
+       while ((rc = getopt_long(argc, argv, short_opts,
+               long_opts, NULL)) != -1) {
+                switch (rc) {
+                case 'f':
+                        follow++;
+                        break;
+                default:
+                       fprintf(stderr,
+                               "%s changelog: unrecognized option '%s'\n",
+                               progname, argv[optind - 1]);
+                        return CMD_HELP;
+                }
+        }
        if (optind >= argc) {
-               fprintf(stderr, "%s: missing operand path\n", argv[0]);
+               fprintf(stderr, "%s changelog: mdtname must be specified\n",
+                       progname);
                return CMD_HELP;
        }
 
-       param.fp_migrate = 1;
-       rc = llapi_migrate_mdt(argv[optind], &param);
-       if (rc != 0)
-               fprintf(stderr, "%s: cannot migrate '%s' to MDT%04x: %s\n",
-                       argv[0], argv[optind], param.fp_mdt_index,
-                       strerror(-rc));
-       return rc;
-}
-
-static int lfs_osts(int argc, char **argv)
-{
-        return lfs_tgts(argc, argv);
-}
+        mdd = argv[optind++];
+        if (argc > optind)
+                startrec = strtoll(argv[optind++], NULL, 10);
+        if (argc > optind)
+                endrec = strtoll(argv[optind++], NULL, 10);
 
-static int lfs_mdts(int argc, char **argv)
-{
-        return lfs_tgts(argc, argv);
-}
+       rc = llapi_changelog_start(&changelog_priv,
+                                  CHANGELOG_FLAG_BLOCK |
+                                  CHANGELOG_FLAG_JOBID |
+                                  CHANGELOG_FLAG_EXTRA_FLAGS |
+                                  (follow ? CHANGELOG_FLAG_FOLLOW : 0),
+                                  mdd, startrec);
+       if (rc < 0) {
+               fprintf(stderr, "%s changelog: cannot start changelog: %s\n",
+                       progname, strerror(errno = -rc));
+               return rc;
+       }
 
-#define COOK(value)                                                     \
-({                                                                      \
-        int radix = 0;                                                  \
-        while (value > 1024) {                                          \
-                value /= 1024;                                          \
-                radix++;                                                \
-        }                                                               \
-        radix;                                                          \
-})
-#define UUF     "%-20s"
-#define CSF     "%11s"
-#define CDF     "%11llu"
-#define HDF     "%8.1f%c"
-#define RSF     "%4s"
-#define RDF     "%3d%%"
+       rc = llapi_changelog_set_xflags(changelog_priv,
+                                       CHANGELOG_EXTRA_FLAG_UIDGID |
+                                       CHANGELOG_EXTRA_FLAG_NID |
+                                       CHANGELOG_EXTRA_FLAG_OMODE |
+                                       CHANGELOG_EXTRA_FLAG_XATTR);
+       if (rc < 0) {
+               fprintf(stderr,
+                       "%s changelog: cannot set xflags for changelog: %s\n",
+                       progname, strerror(errno = -rc));
+               return rc;
+       }
 
-enum mntdf_flags {
-       MNTDF_INODES    = 0x0001,
-       MNTDF_COOKED    = 0x0002,
-       MNTDF_LAZY      = 0x0004,
-       MNTDF_VERBOSE   = 0x0008,
-};
+       while ((rc = llapi_changelog_recv(changelog_priv, &rec)) == 0) {
+               time_t secs;
+               struct tm ts;
 
-static int showdf(char *mntdir, struct obd_statfs *stat,
-                 char *uuid, enum mntdf_flags flags,
-                 char *type, int index, int rc)
-{
-       long long avail, used, total;
-       double ratio = 0;
-       char *suffix = "KMGTPEZY";
-       /* Note if we have >2^64 bytes/fs these buffers will need to be grown */
-       char tbuf[3 * sizeof(__u64)];
-       char ubuf[3 * sizeof(__u64)];
-       char abuf[3 * sizeof(__u64)];
-       char rbuf[3 * sizeof(__u64)];
+               if (endrec && rec->cr_index > endrec) {
+                       llapi_changelog_free(&rec);
+                       break;
+               }
+               if (rec->cr_index < startrec) {
+                       llapi_changelog_free(&rec);
+                       continue;
+               }
 
-       if (!uuid || !stat)
-               return -EINVAL;
+               secs = rec->cr_time >> 30;
+               gmtime_r(&secs, &ts);
+               printf("%ju %02d%-5s %02d:%02d:%02d.%09d %04d.%02d.%02d "
+                      "0x%x t="DFID, (uintmax_t)rec->cr_index, rec->cr_type,
+                      changelog_type2str(rec->cr_type),
+                      ts.tm_hour, ts.tm_min, ts.tm_sec,
+                      (int)(rec->cr_time & ((1 << 30) - 1)),
+                      ts.tm_year + 1900, ts.tm_mon + 1, ts.tm_mday,
+                      rec->cr_flags & CLF_FLAGMASK, PFID(&rec->cr_tfid));
 
-       switch (rc) {
-       case 0:
-               if (flags & MNTDF_INODES) {
-                       avail = stat->os_ffree;
-                       used = stat->os_files - stat->os_ffree;
-                       total = stat->os_files;
-               } else {
-                       int shift = flags & MNTDF_COOKED ? 0 : 10;
+               if (rec->cr_flags & CLF_JOBID) {
+                       struct changelog_ext_jobid *jid =
+                               changelog_rec_jobid(rec);
 
-                       avail = (stat->os_bavail * stat->os_bsize) >> shift;
-                       used  = ((stat->os_blocks - stat->os_bfree) *
-                                stat->os_bsize) >> shift;
-                       total = (stat->os_blocks * stat->os_bsize) >> shift;
+                       if (jid->cr_jobid[0] != '\0')
+                               printf(" j=%s", jid->cr_jobid);
                }
 
-               if ((used + avail) > 0)
-                       ratio = (double)used / (double)(used + avail);
+               if (rec->cr_flags & CLF_EXTRA_FLAGS) {
+                       struct changelog_ext_extra_flags *ef =
+                               changelog_rec_extra_flags(rec);
 
-               if (flags & MNTDF_COOKED) {
-                       int i;
-                       double cook_val;
+                       printf(" ef=0x%llx", ef->cr_extra_flags);
 
-                       cook_val = (double)total;
-                       i = COOK(cook_val);
-                       if (i > 0)
-                               snprintf(tbuf, sizeof(tbuf), HDF, cook_val,
-                                        suffix[i - 1]);
-                       else
-                               snprintf(tbuf, sizeof(tbuf), CDF, total);
+                       if (ef->cr_extra_flags & CLFE_UIDGID) {
+                               struct changelog_ext_uidgid *uidgid =
+                                       changelog_rec_uidgid(rec);
 
-                       cook_val = (double)used;
-                       i = COOK(cook_val);
-                       if (i > 0)
-                               snprintf(ubuf, sizeof(ubuf), HDF, cook_val,
-                                        suffix[i - 1]);
-                       else
-                               snprintf(ubuf, sizeof(ubuf), CDF, used);
+                               printf(" u=%llu:%llu",
+                                      uidgid->cr_uid, uidgid->cr_gid);
+                       }
+                       if (ef->cr_extra_flags & CLFE_NID) {
+                               struct changelog_ext_nid *nid =
+                                       changelog_rec_nid(rec);
 
-                       cook_val = (double)avail;
-                       i = COOK(cook_val);
-                       if (i > 0)
-                               snprintf(abuf, sizeof(abuf), HDF, cook_val,
-                                        suffix[i - 1]);
-                       else
-                               snprintf(abuf, sizeof(abuf), CDF, avail);
-               } else {
-                       snprintf(tbuf, sizeof(tbuf), CDF, total);
-                       snprintf(ubuf, sizeof(tbuf), CDF, used);
-                       snprintf(abuf, sizeof(tbuf), CDF, avail);
-               }
+                               printf(" nid=%s",
+                                      libcfs_nid2str(nid->cr_nid));
+                       }
 
-               sprintf(rbuf, RDF, (int)(ratio * 100 + 0.5));
-               printf(UUF" "CSF" "CSF" "CSF" "RSF" %-s",
-                      uuid, tbuf, ubuf, abuf, rbuf, mntdir);
-               if (type)
-                       printf("[%s:%d]", type, index);
+                       if (ef->cr_extra_flags & CLFE_OPEN) {
+                               struct changelog_ext_openmode *omd =
+                                       changelog_rec_openmode(rec);
+                               char mode[] = "---";
 
-               if (stat->os_state) {
-                       /*
-                        * Each character represents the matching
-                        * OS_STATE_* bit.
-                        */
-                       const char state_names[] = "DRSI";
-                       __u32      state;
-                       __u32      i;
+                               /* exec mode must be exclusive */
+                               if (omd->cr_openflags & MDS_FMODE_EXEC) {
+                                       mode[2] = 'x';
+                               } else {
+                                       if (omd->cr_openflags & MDS_FMODE_READ)
+                                               mode[0] = 'r';
+                                       if (omd->cr_openflags &
+                                           (MDS_FMODE_WRITE |
+                                            MDS_OPEN_TRUNC |
+                                            MDS_OPEN_APPEND))
+                                               mode[1] = 'w';
+                               }
+
+                               if (strcmp(mode, "---") != 0)
+                                       printf(" m=%s", mode);
 
-                       printf(" ");
-                       for (i = 0, state = stat->os_state;
-                            state && i < sizeof(state_names); i++) {
-                               if (!(state & (1 << i)))
-                                       continue;
-                               printf("%c", state_names[i]);
-                               state ^= 1 << i;
+                       }
+
+                       if (ef->cr_extra_flags & CLFE_XATTR) {
+                               struct changelog_ext_xattr *xattr =
+                                       changelog_rec_xattr(rec);
+
+                               if (xattr->cr_xattr[0] != '\0')
+                                       printf(" x=%s", xattr->cr_xattr);
                        }
                }
 
+               if (rec->cr_namelen)
+                       printf(" p="DFID" %.*s", PFID(&rec->cr_pfid),
+                              rec->cr_namelen, changelog_rec_name(rec));
+
+               if (rec->cr_flags & CLF_RENAME) {
+                       struct changelog_ext_rename *rnm =
+                               changelog_rec_rename(rec);
+
+                       if (!fid_is_zero(&rnm->cr_sfid))
+                               printf(" s="DFID" sp="DFID" %.*s",
+                                      PFID(&rnm->cr_sfid),
+                                      PFID(&rnm->cr_spfid),
+                                      (int)changelog_rec_snamelen(rec),
+                                      changelog_rec_sname(rec));
+               }
                printf("\n");
-               break;
-       case -ENODATA:
-               printf(UUF": inactive device\n", uuid);
-               break;
-       default:
-               printf(UUF": %s\n", uuid, strerror(-rc));
-               break;
+
+               llapi_changelog_free(&rec);
        }
 
-       return 0;
+       llapi_changelog_fini(&changelog_priv);
+
+       if (rc < 0)
+               fprintf(stderr, "%s changelog: cannot access changelog: %s\n",
+                       progname, strerror(errno = -rc));
+
+       return (rc == 1 ? 0 : rc);
 }
 
-struct ll_stat_type {
-        int   st_op;
-        char *st_name;
-};
+static int lfs_changelog_clear(int argc, char **argv)
+{
+       long long endrec;
+       int rc;
+
+       if (argc != 4)
+               return CMD_HELP;
+
+       endrec = strtoll(argv[3], NULL, 10);
+
+       rc = llapi_changelog_clear(argv[1], argv[2], endrec);
+
+       if (rc == -EINVAL)
+               fprintf(stderr, "%s: record out of range: %llu\n",
+                       argv[0], endrec);
+       else if (rc == -ENOENT)
+               fprintf(stderr, "%s: no changelog user: %s\n",
+                       argv[0], argv[2]);
+       else if (rc)
+               fprintf(stderr, "%s error: %s\n", argv[0],
+                       strerror(-rc));
+
+       if (rc)
+               errno = -rc;
+
+       return rc;
+}
 
-static int mntdf(char *mntdir, char *fsname, char *pool, enum mntdf_flags flags)
+static int lfs_fid2path(int argc, char **argv)
 {
-       struct obd_statfs stat_buf, sum = { .os_bsize = 1 };
-       struct obd_uuid uuid_buf;
-       char *poolname = NULL;
-       struct ll_stat_type types[] = {
-               { .st_op = LL_STATFS_LMV,       .st_name = "MDT" },
-               { .st_op = LL_STATFS_LOV,       .st_name = "OST" },
-               { .st_name = NULL } };
-       struct ll_stat_type *tp;
-       __u64 ost_ffree = 0;
-       __u32 index;
-       __u32 type;
-       int fd;
+       struct option long_opts[] = {
+               { .val = 'c',   .name = "cur",  .has_arg = no_argument },
+               { .val = 'l',   .name = "link", .has_arg = required_argument },
+               { .val = 'r',   .name = "rec",  .has_arg = required_argument },
+               { .name = NULL } };
+       char  short_opts[] = "cl:r:";
+       char *device, *fid, *path;
+       long long recno = -1;
+       int linkno = -1;
+       int lnktmp;
+       int printcur = 0;
        int rc = 0;
-       int rc2;
+       char *endptr = NULL;
 
-       if (pool) {
-               poolname = strchr(pool, '.');
-               if (poolname != NULL) {
-                       if (strncmp(fsname, pool, strlen(fsname))) {
-                               fprintf(stderr, "filesystem name incorrect\n");
-                               return -ENODEV;
+       while ((rc = getopt_long(argc, argv, short_opts,
+               long_opts, NULL)) != -1) {
+               switch (rc) {
+               case 'c':
+                       printcur++;
+                       break;
+               case 'l':
+                       linkno = strtol(optarg, &endptr, 10);
+                       if (*endptr != '\0') {
+                               fprintf(stderr,
+                                       "%s fid2path: invalid linkno '%s'\n",
+                                       progname, optarg);
+                               return CMD_HELP;
                        }
-                       poolname++;
-               } else
-                       poolname = pool;
+                       break;
+               case 'r':
+                       recno = strtoll(optarg, &endptr, 10);
+                       if (*endptr != '\0') {
+                               fprintf(stderr,
+                                       "%s fid2path: invalid recno '%s'\n",
+                                       progname, optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+               default:
+                       fprintf(stderr,
+                               "%s fid2path: unrecognized option '%s'\n",
+                               progname, argv[optind - 1]);
+                       return CMD_HELP;
+               }
        }
 
-       fd = open(mntdir, O_RDONLY);
-       if (fd < 0) {
+       if (argc < 3) {
+               fprintf(stderr,
+                       "%s fid2path: <fsname|rootpath> and <fid>... must be specified\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       device = argv[optind++];
+       path = calloc(1, PATH_MAX);
+       if (path == NULL) {
                rc = -errno;
-               fprintf(stderr, "%s: cannot open '%s': %s\n", progname, mntdir,
-                       strerror(errno));
+               fprintf(stderr,
+                       "%s fid2path: cannot allocate memory for path: %s\n",
+                       progname, strerror(-rc));
                return rc;
        }
 
-       if (flags & MNTDF_INODES)
-               printf(UUF" "CSF" "CSF" "CSF" "RSF" %-s\n",
-                      "UUID", "Inodes", "IUsed", "IFree",
-                      "IUse%", "Mounted on");
-       else
-               printf(UUF" "CSF" "CSF" "CSF" "RSF" %-s\n",
-                      "UUID", flags & MNTDF_COOKED ? "bytes" : "1K-blocks",
-                      "Used", "Available", "Use%", "Mounted on");
+       rc = 0;
+       while (optind < argc) {
+               fid = argv[optind++];
 
-       for (tp = types; tp->st_name != NULL; tp++) {
-               for (index = 0; ; index++) {
-                       memset(&stat_buf, 0, sizeof(struct obd_statfs));
-                       memset(&uuid_buf, 0, sizeof(struct obd_uuid));
-                       type = flags & MNTDF_LAZY ?
-                               tp->st_op | LL_STATFS_NODELAY : tp->st_op;
-                       rc2 = llapi_obd_fstatfs(fd, type, index,
-                                              &stat_buf, &uuid_buf);
-                       if (rc2 == -ENODEV)
+               lnktmp = (linkno >= 0) ? linkno : 0;
+               while (1) {
+                       int oldtmp = lnktmp;
+                       long long rectmp = recno;
+                       int rc2;
+                       rc2 = llapi_fid2path(device, fid, path, PATH_MAX,
+                                            &rectmp, &lnktmp);
+                       if (rc2 < 0) {
+                               fprintf(stderr,
+                                       "%s fid2path: cannot find '%s': %s\n",
+                                       progname, fid, strerror(errno = -rc2));
+                               if (rc == 0)
+                                       rc = rc2;
                                break;
-                       if (rc2 == -EAGAIN)
-                               continue;
-                       if (rc2 == -ENODATA) { /* Inactive device, OK. */
-                               if (!(flags & MNTDF_VERBOSE))
-                                       continue;
-                       } else if (rc2 < 0 && rc == 0) {
-                               rc = rc2;
                        }
 
-                       if (poolname && tp->st_op == LL_STATFS_LOV &&
-                           llapi_search_ost(fsname, poolname,
-                                            obd_uuid2str(&uuid_buf)) != 1)
-                               continue;
+                       if (printcur)
+                               fprintf(stdout, "%lld ", rectmp);
+                       if (device[0] == '/') {
+                               fprintf(stdout, "%s", device);
+                               if (device[strlen(device) - 1] != '/')
+                                       fprintf(stdout, "/");
+                       } else if (path[0] == '\0') {
+                               fprintf(stdout, "/");
+                       }
+                       fprintf(stdout, "%s\n", path);
 
-                       /* the llapi_obd_statfs() call may have returned with
-                        * an error, but if it filled in uuid_buf we will at
-                        * lease use that to print out a message for that OBD.
-                        * If we didn't get anything in the uuid_buf, then fill
-                        * it in so that we can print an error message. */
-                       if (uuid_buf.uuid[0] == '\0')
-                               snprintf(uuid_buf.uuid, sizeof(uuid_buf.uuid),
-                                        "%s%04x", tp->st_name, index);
-                       showdf(mntdir, &stat_buf, obd_uuid2str(&uuid_buf),
-                              flags, tp->st_name, index, rc2);
-
-                       if (rc2 == 0) {
-                               if (tp->st_op == LL_STATFS_LMV) {
-                                       sum.os_ffree += stat_buf.os_ffree;
-                                       sum.os_files += stat_buf.os_files;
-                               } else /* if (tp->st_op == LL_STATFS_LOV) */ {
-                                       sum.os_blocks += stat_buf.os_blocks *
-                                               stat_buf.os_bsize;
-                                       sum.os_bfree  += stat_buf.os_bfree *
-                                               stat_buf.os_bsize;
-                                       sum.os_bavail += stat_buf.os_bavail *
-                                               stat_buf.os_bsize;
-                                       ost_ffree += stat_buf.os_ffree;
-                               }
+                       if (linkno >= 0)
+                               /* specified linkno */
+                               break;
+                       if (oldtmp == lnktmp)
+                               /* no more links */
+                               break;
+               }
+       }
+
+       free(path);
+       return rc;
+}
+
+static int lfs_path2fid(int argc, char **argv)
+{
+       struct option long_opts[] = {
+               { .val = 'p', .name = "parents", .has_arg = no_argument },
+               { .name = NULL } };
+       char            **path;
+       const char        short_opts[] = "p";
+       const char       *sep = "";
+       struct lu_fid     fid;
+       int               rc = 0;
+       bool              show_parents = false;
+
+       while ((rc = getopt_long(argc, argv, short_opts,
+                                long_opts, NULL)) != -1) {
+               switch (rc) {
+               case 'p':
+                       show_parents = true;
+                       break;
+               default:
+                       fprintf(stderr,
+                               "%s path2fid: unrecognized option '%s'\n",
+                               progname, argv[optind - 1]);
+                       return CMD_HELP;
+               }
+       }
+
+       if (optind > argc - 1) {
+               fprintf(stderr, "%s path2fid: FILE... must be specified\n",
+                       progname);
+               return CMD_HELP;
+       }
+       else if (optind < argc - 1)
+               sep = ": ";
+
+       rc = 0;
+       for (path = argv + optind; *path != NULL; path++) {
+               int err = 0;
+               if (!show_parents) {
+                       err = llapi_path2fid(*path, &fid);
+                       if (!err)
+                               printf("%s%s"DFID"\n",
+                                      *sep != '\0' ? *path : "", sep,
+                                      PFID(&fid));
+               } else {
+                       char            name[NAME_MAX + 1];
+                       unsigned int    linkno = 0;
+
+                       while ((err = llapi_path2parent(*path, linkno, &fid,
+                                               name, sizeof(name))) == 0) {
+                               if (*sep != '\0' && linkno == 0)
+                                       printf("%s%s", *path, sep);
+
+                               printf("%s"DFID"/%s", linkno != 0 ? "\t" : "",
+                                      PFID(&fid), name);
+                               linkno++;
+                       }
+
+                       /* err == -ENODATA is end-of-loop */
+                       if (linkno > 0 && err == -ENODATA) {
+                               printf("\n");
+                               err = 0;
                        }
                }
-       }
-
-       close(fd);
 
-       /* If we don't have as many objects free on the OST as inodes
-        * on the MDS, we reduce the total number of inodes to
-        * compensate, so that the "inodes in use" number is correct.
-        * Matches ll_statfs_internal() so the results are consistent. */
-       if (ost_ffree < sum.os_ffree) {
-               sum.os_files = (sum.os_files - sum.os_ffree) + ost_ffree;
-               sum.os_ffree = ost_ffree;
+               if (err) {
+                       fprintf(stderr,
+                               "%s path2fid: cannot get %sfid for '%s': %s\n",
+                               progname, show_parents ? "parent " : "", *path,
+                               strerror(-err));
+                       if (rc == 0) {
+                               rc = err;
+                               errno = -err;
+                       }
+               }
        }
-       printf("\n");
-       showdf(mntdir, &sum, "filesystem_summary:", flags, NULL, 0, 0);
-       printf("\n");
 
        return rc;
 }
 
-static int lfs_df(int argc, char **argv)
+static int lfs_data_version(int argc, char **argv)
 {
-       char mntdir[PATH_MAX] = {'\0'}, path[PATH_MAX] = {'\0'};
-       enum mntdf_flags flags = 0;
-       int c, rc = 0, index = 0;
-       char fsname[PATH_MAX] = "", *pool_name = NULL;
-       struct option long_opts[] = {
-       { .val = 'h',   .name = "human-readable",
-                                               .has_arg = no_argument },
-       { .val = 'i',   .name = "inodes",       .has_arg = no_argument },
-       { .val = 'l',   .name = "lazy",         .has_arg = no_argument },
-       { .val = 'p',   .name = "pool",         .has_arg = required_argument },
-       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
-       { .name = NULL} };
+       char *path;
+       __u64 data_version;
+       int fd;
+       int rc;
+       int c;
+       int data_version_flags = LL_DV_RD_FLUSH; /* Read by default */
 
-       while ((c = getopt_long(argc, argv, "hilp:v", long_opts, NULL)) != -1) {
+       if (argc < 2) {
+               fprintf(stderr, "%s data_version: FILE must be specified\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       while ((c = getopt(argc, argv, "nrw")) != -1) {
                switch (c) {
-               case 'h':
-                       flags |= MNTDF_COOKED;
-                       break;
-               case 'i':
-                       flags |= MNTDF_INODES;
-                       break;
-               case 'l':
-                       flags |= MNTDF_LAZY;
+               case 'n':
+                       data_version_flags = 0;
                        break;
-               case 'p':
-                       pool_name = optarg;
+               case 'r':
+                       data_version_flags |= LL_DV_RD_FLUSH;
                        break;
-               case 'v':
-                       flags |= MNTDF_VERBOSE;
+               case 'w':
+                       data_version_flags |= LL_DV_WR_FLUSH;
                        break;
                default:
+                       fprintf(stderr,
+                               "%s data_version: unrecognized option '%s'\n",
+                               progname, argv[optind - 1]);
                        return CMD_HELP;
                }
        }
-       if (optind < argc && !realpath(argv[optind], path)) {
+       if (optind == argc) {
+               fprintf(stderr, "%s data_version: FILE must be specified\n",
+                       progname);
+               return CMD_HELP;
+       }
+
+       path = argv[optind];
+       fd = open(path, O_RDONLY);
+       if (fd < 0) {
                rc = -errno;
-               fprintf(stderr, "error: invalid path '%s': %s\n",
-                       argv[optind], strerror(-rc));
+               fprintf(stderr, "%s data_version: cannot open file '%s': %s\n",
+                       progname, path, strerror(-rc));
                return rc;
        }
 
-       while (!llapi_search_mounts(path, index++, mntdir, fsname)) {
-               /* Check if we have a mount point */
-               if (mntdir[0] == '\0')
-                       continue;
-
-               rc = mntdf(mntdir, fsname, pool_name, flags);
-               if (rc || path[0] != '\0')
-                       break;
-               fsname[0] = '\0'; /* avoid matching in next loop */
-               mntdir[0] = '\0'; /* avoid matching in next loop */
-       }
+       rc = llapi_get_data_version(fd, &data_version, data_version_flags);
+       if (rc < 0)
+               fprintf(stderr,
+                       "%s data_version: cannot get version for '%s': %s\n",
+                       progname, path, strerror(-rc));
+       else
+               printf("%ju" "\n", (uintmax_t)data_version);
 
+       close(fd);
        return rc;
 }
 
-static int lfs_getname(int argc, char **argv)
+static int lfs_hsm_state(int argc, char **argv)
 {
-        char mntdir[PATH_MAX] = "", path[PATH_MAX] = "", fsname[PATH_MAX] = "";
-        int rc = 0, index = 0, c;
-        char buf[sizeof(struct obd_uuid)];
+       int rc;
+       int i = 1;
+       char *path;
+       struct hsm_user_state hus;
 
-        while ((c = getopt(argc, argv, "h")) != -1)
-                return CMD_HELP;
+       if (argc < 2)
+               return CMD_HELP;
 
-        if (optind == argc) { /* no paths specified, get all paths. */
-                while (!llapi_search_mounts(path, index++, mntdir, fsname)) {
-                        rc = llapi_getname(mntdir, buf, sizeof(buf));
-                        if (rc < 0) {
-                                fprintf(stderr,
-                                        "cannot get name for `%s': %s\n",
-                                        mntdir, strerror(-rc));
-                                break;
-                        }
+       do {
+               path = argv[i];
 
-                        printf("%s %s\n", buf, mntdir);
+               rc = llapi_hsm_state_get(path, &hus);
+               if (rc) {
+                       fprintf(stderr, "can't get hsm state for %s: %s\n",
+                               path, strerror(errno = -rc));
+                       return rc;
+               }
 
-                        path[0] = fsname[0] = mntdir[0] = 0;
-                }
-        } else { /* paths specified, only attempt to search these. */
-                for (; optind < argc; optind++) {
-                        rc = llapi_getname(argv[optind], buf, sizeof(buf));
-                        if (rc < 0) {
-                                fprintf(stderr,
-                                        "cannot get name for `%s': %s\n",
-                                        argv[optind], strerror(-rc));
-                                break;
-                        }
+               /* Display path name and status flags */
+               printf("%s: (0x%08x)", path, hus.hus_states);
 
-                        printf("%s %s\n", buf, argv[optind]);
-                }
-        }
-        return rc;
-}
+               if (hus.hus_states & HS_RELEASED)
+                       printf(" released");
+               if (hus.hus_states & HS_EXISTS)
+                       printf(" exists");
+               if (hus.hus_states & HS_DIRTY)
+                       printf(" dirty");
+               if (hus.hus_states & HS_ARCHIVED)
+                       printf(" archived");
+               /* Display user-settable flags */
+               if (hus.hus_states & HS_NORELEASE)
+                       printf(" never_release");
+               if (hus.hus_states & HS_NOARCHIVE)
+                       printf(" never_archive");
+               if (hus.hus_states & HS_LOST)
+                       printf(" lost_from_hsm");
 
-static int lfs_check(int argc, char **argv)
-{
-        int rc;
-        char mntdir[PATH_MAX] = {'\0'};
-        int num_types = 1;
-        char *obd_types[2];
-        char obd_type1[4];
-        char obd_type2[4];
+               if (hus.hus_archive_id != 0)
+                       printf(", archive_id:%d", hus.hus_archive_id);
+               printf("\n");
 
-        if (argc != 2)
-                return CMD_HELP;
+       } while (++i < argc);
 
-        obd_types[0] = obd_type1;
-        obd_types[1] = obd_type2;
-
-        if (strcmp(argv[1], "osts") == 0) {
-                strcpy(obd_types[0], "osc");
-        } else if (strcmp(argv[1], "mds") == 0) {
-                strcpy(obd_types[0], "mdc");
-        } else if (strcmp(argv[1], "servers") == 0) {
-                num_types = 2;
-                strcpy(obd_types[0], "osc");
-                strcpy(obd_types[1], "mdc");
-        } else {
-                fprintf(stderr, "error: %s: option '%s' unrecognized\n",
-                                argv[0], argv[1]);
-                        return CMD_HELP;
-        }
+       return 0;
+}
 
-        rc = llapi_search_mounts(NULL, 0, mntdir, NULL);
-        if (rc < 0 || mntdir[0] == '\0') {
-                fprintf(stderr, "No suitable Lustre mount found\n");
-                return rc;
-        }
+#define LFS_HSM_SET   0
+#define LFS_HSM_CLEAR 1
 
-       rc = llapi_target_check(num_types, obd_types, mntdir);
-        if (rc)
-                fprintf(stderr, "error: %s: %s status failed\n",
-                                argv[0],argv[1]);
+/**
+ * Generic function to set or clear HSM flags.
+ * Used by hsm_set and hsm_clear.
+ *
+ * @mode  if LFS_HSM_SET, set the flags, if LFS_HSM_CLEAR, clear the flags.
+ */
+static int lfs_hsm_change_flags(int argc, char **argv, int mode)
+{
+       struct option long_opts[] = {
+       { .val = 'A',   .name = "archived",     .has_arg = no_argument },
+       { .val = 'a',   .name = "noarchive",    .has_arg = no_argument },
+       { .val = 'd',   .name = "dirty",        .has_arg = no_argument },
+       { .val = 'e',   .name = "exists",       .has_arg = no_argument },
+       { .val = 'l',   .name = "lost",         .has_arg = no_argument },
+       { .val = 'r',   .name = "norelease",    .has_arg = no_argument },
+       { .val = 'i',   .name = "archive-id",   .has_arg = required_argument },
+       { .name = NULL } };
+       char short_opts[] = "lraAdei:";
+       __u64 mask = 0;
+       int c, rc;
+       char *path;
+       __u32 archive_id = 0;
+       char *end = NULL;
 
-        return rc;
+       if (argc < 3)
+               return CMD_HELP;
 
-}
+       while ((c = getopt_long(argc, argv, short_opts,
+                               long_opts, NULL)) != -1) {
+               switch (c) {
+               case 'l':
+                       mask |= HS_LOST;
+                       break;
+               case 'a':
+                       mask |= HS_NOARCHIVE;
+                       break;
+               case 'A':
+                       mask |= HS_ARCHIVED;
+                       break;
+               case 'r':
+                       mask |= HS_NORELEASE;
+                       break;
+               case 'd':
+                       mask |= HS_DIRTY;
+                       break;
+               case 'e':
+                       mask |= HS_EXISTS;
+                       break;
+               case 'i':
+                       archive_id = strtol(optarg, &end, 10);
+                       if (*end != '\0') {
+                               fprintf(stderr, "invalid archive_id: '%s'\n",
+                                       end);
+                               return CMD_HELP;
+                       }
+                       break;
+               case '?':
+                       return CMD_HELP;
+               default:
+                       fprintf(stderr, "error: %s: option '%s' unrecognized\n",
+                               argv[0], argv[optind - 1]);
+                       return CMD_HELP;
+               }
+       }
 
-#ifdef HAVE_SYS_QUOTA_H
-#define ARG2INT(nr, str, msg)                                           \
-do {                                                                    \
-        char *endp;                                                     \
-        nr = strtol(str, &endp, 0);                                     \
-        if (*endp) {                                                    \
-                fprintf(stderr, "error: bad %s: %s\n", msg, str);       \
-                return CMD_HELP;                                        \
-        }                                                               \
-} while (0)
+       /* User should have specified a flag */
+       if (mask == 0)
+               return CMD_HELP;
 
-#define ADD_OVERFLOW(a,b) ((a + b) < a) ? (a = ULONG_MAX) : (a = a + b)
+       while (optind < argc) {
 
-/* Convert format time string "XXwXXdXXhXXmXXs" into seconds value
- * returns the value or ULONG_MAX on integer overflow or incorrect format
- * Notes:
- *        1. the order of specifiers is arbitrary (may be: 5w3s or 3s5w)
- *        2. specifiers may be encountered multiple times (2s3s is 5 seconds)
- *        3. empty integer value is interpreted as 0
- */
-static unsigned long str2sec(const char* timestr)
-{
-        const char spec[] = "smhdw";
-        const unsigned long mult[] = {1, 60, 60*60, 24*60*60, 7*24*60*60};
-        unsigned long val = 0;
-        char *tail;
+               path = argv[optind];
+
+               /* If mode == 0, this means we apply the mask. */
+               if (mode == LFS_HSM_SET)
+                       rc = llapi_hsm_state_set(path, mask, 0, archive_id);
+               else
+                       rc = llapi_hsm_state_set(path, 0, mask, 0);
 
-        if (strpbrk(timestr, spec) == NULL) {
-                /* no specifiers inside the time string,
-                   should treat it as an integer value */
-                val = strtoul(timestr, &tail, 10);
-                return *tail ? ULONG_MAX : val;
-        }
+               if (rc != 0) {
+                       fprintf(stderr, "Can't change hsm flags for %s: %s\n",
+                               path, strerror(errno = -rc));
+                       return rc;
+               }
+               optind++;
+       }
 
-        /* format string is XXwXXdXXhXXmXXs */
-        while (*timestr) {
-                unsigned long v;
-                int ind;
-                char* ptr;
+       return 0;
+}
 
-                v = strtoul(timestr, &tail, 10);
-                if (v == ULONG_MAX || *tail == '\0')
-                        /* value too large (ULONG_MAX or more)
-                           or missing specifier */
-                        goto error;
+static int lfs_hsm_action(int argc, char **argv)
+{
+       int                              rc;
+       int                              i = 1;
+       char                            *path;
+       struct hsm_current_action        hca;
+       struct hsm_extent                he;
+       enum hsm_user_action             hua;
+       enum hsm_progress_states         hps;
 
-                ptr = strchr(spec, *tail);
-                if (ptr == NULL)
-                        /* unknown specifier */
-                        goto error;
+       if (argc < 2)
+               return CMD_HELP;
 
-                ind = ptr - spec;
+       do {
+               path = argv[i];
 
-                /* check if product will overflow the type */
-                if (!(v < ULONG_MAX / mult[ind]))
-                        goto error;
+               rc = llapi_hsm_current_action(path, &hca);
+               if (rc) {
+                       fprintf(stderr, "can't get hsm action for %s: %s\n",
+                               path, strerror(errno = -rc));
+                       return rc;
+               }
+               he = hca.hca_location;
+               hua = hca.hca_action;
+               hps = hca.hca_state;
 
-                ADD_OVERFLOW(val, mult[ind] * v);
-                if (val == ULONG_MAX)
-                        goto error;
+               printf("%s: %s", path, hsm_user_action2name(hua));
 
-                timestr = tail + 1;
-        }
+               /* Skip file without action */
+               if (hca.hca_action == HUA_NONE) {
+                       printf("\n");
+                       continue;
+               }
 
-        return val;
+               printf(" %s ", hsm_progress_state2name(hps));
 
-error:
-        return ULONG_MAX;
-}
+               if ((hps == HPS_RUNNING) &&
+                   (hua == HUA_ARCHIVE || hua == HUA_RESTORE))
+                       printf("(%llu bytes moved)\n",
+                              (unsigned long long)he.length);
+               else if ((he.offset + he.length) == LUSTRE_EOF)
+                       printf("(from %llu to EOF)\n",
+                              (unsigned long long)he.offset);
+               else
+                       printf("(from %llu to %llu)\n",
+                              (unsigned long long)he.offset,
+                              (unsigned long long)(he.offset + he.length));
 
-#define ARG2ULL(nr, str, def_units)                                    \
-do {                                                                   \
-       unsigned long long limit, units = def_units;                    \
-       int rc;                                                         \
-                                                                       \
-       rc = llapi_parse_size(str, &limit, &units, 1);                  \
-       if (rc < 0) {                                                   \
-               fprintf(stderr, "error: bad limit value %s\n", str);    \
-               return CMD_HELP;                                        \
-       }                                                               \
-       nr = limit;                                                     \
-} while (0)
+       } while (++i < argc);
 
-static inline int has_times_option(int argc, char **argv)
-{
-        int i;
+       return 0;
+}
 
-        for (i = 1; i < argc; i++)
-                if (!strcmp(argv[i], "-t"))
-                        return 1;
+static int lfs_hsm_set(int argc, char **argv)
+{
+       return lfs_hsm_change_flags(argc, argv, LFS_HSM_SET);
+}
 
-        return 0;
+static int lfs_hsm_clear(int argc, char **argv)
+{
+       return lfs_hsm_change_flags(argc, argv, LFS_HSM_CLEAR);
 }
 
-int lfs_setquota_times(int argc, char **argv)
+/**
+ * Check file state and return its fid, to be used by lfs_hsm_request().
+ *
+ * \param[in]     file      Path to file to check
+ * \param[in,out] fid       Pointer to allocated lu_fid struct.
+ * \param[in,out] last_dev  Pointer to last device id used.
+ *
+ * \return 0 on success.
+ */
+static int lfs_hsm_prepare_file(const char *file, struct lu_fid *fid,
+                               dev_t *last_dev)
 {
-        int c, rc;
-        struct if_quotactl qctl;
-        char *mnt, *obd_type = (char *)qctl.obd_type;
-        struct obd_dqblk *dqb = &qctl.qc_dqblk;
-        struct obd_dqinfo *dqi = &qctl.qc_dqinfo;
-        struct option long_opts[] = {
-       { .val = 'b',   .name = "block-grace",  .has_arg = required_argument },
-       { .val = 'g',   .name = "group",        .has_arg = no_argument },
-       { .val = 'i',   .name = "inode-grace",  .has_arg = required_argument },
-       { .val = 'p',   .name = "projid",       .has_arg = no_argument },
-       { .val = 't',   .name = "times",        .has_arg = no_argument },
-       { .val = 'u',   .name = "user",         .has_arg = no_argument },
-       { .name = NULL } };
-       int qtype;
+       struct stat     st;
+       int             rc;
 
-       memset(&qctl, 0, sizeof(qctl));
-       qctl.qc_cmd  = LUSTRE_Q_SETINFO;
-       qctl.qc_type = ALLQUOTA;
+       rc = lstat(file, &st);
+       if (rc) {
+               fprintf(stderr, "Cannot stat %s: %s\n", file, strerror(errno));
+               return -errno;
+       }
+       /* Checking for regular file as archiving as posix copytool
+        * rejects archiving files other than regular files
+        */
+       if (!S_ISREG(st.st_mode)) {
+               fprintf(stderr, "error: \"%s\" is not a regular file\n", file);
+               return CMD_HELP;
+       }
+       /* A request should be ... */
+       if (*last_dev != st.st_dev && *last_dev != 0) {
+               fprintf(stderr, "All files should be "
+                       "on the same filesystem: %s\n", file);
+               return -EINVAL;
+       }
+       *last_dev = st.st_dev;
 
-       while ((c = getopt_long(argc, argv, "b:gi:ptu",
-                               long_opts, NULL)) != -1) {
-               switch (c) {
-               case 'u':
-                       qtype = USRQUOTA;
-                       goto quota_type;
-               case 'g':
-                       qtype = GRPQUOTA;
-                       goto quota_type;
-               case 'p':
-                       qtype = PRJQUOTA;
-quota_type:
-                       if (qctl.qc_type != ALLQUOTA) {
-                               fprintf(stderr, "error: -u/g/p can't be used "
-                                                "more than once\n");
-                               return CMD_HELP;
-                       }
-                       qctl.qc_type = qtype;
-                       break;
-                case 'b':
-                        if ((dqi->dqi_bgrace = str2sec(optarg)) == ULONG_MAX) {
-                                fprintf(stderr, "error: bad block-grace: %s\n",
-                                        optarg);
-                                return CMD_HELP;
-                        }
-                        dqb->dqb_valid |= QIF_BTIME;
-                        break;
-                case 'i':
-                        if ((dqi->dqi_igrace = str2sec(optarg)) == ULONG_MAX) {
-                                fprintf(stderr, "error: bad inode-grace: %s\n",
-                                        optarg);
-                                return CMD_HELP;
-                        }
-                        dqb->dqb_valid |= QIF_ITIME;
-                        break;
-                case 't': /* Yes, of course! */
-                        break;
-                default: /* getopt prints error message for us when opterr != 0 */
-                        return CMD_HELP;
-                }
-        }
+       rc = llapi_path2fid(file, fid);
+       if (rc) {
+               fprintf(stderr, "Cannot read FID of %s: %s\n",
+                       file, strerror(-rc));
+               return rc;
+       }
+       return 0;
+}
 
-       if (qctl.qc_type == ALLQUOTA) {
-               fprintf(stderr, "error: neither -u, -g nor -p specified\n");
-                return CMD_HELP;
-        }
+/* Fill an HSM HUR item with a given file name.
+ *
+ * If mntpath is set, then the filename is actually a FID, and no
+ * lookup on the filesystem will be performed.
+ *
+ * \param[in]  hur         the user request to fill
+ * \param[in]  idx         index of the item inside the HUR to fill
+ * \param[in]  mntpath     mountpoint of Lustre
+ * \param[in]  fname       filename (if mtnpath is NULL)
+ *                         or FID (if mntpath is set)
+ * \param[in]  last_dev    pointer to last device id used
+ *
+ * \retval 0 on success
+ * \retval CMD_HELP or a negative errno on error
+ */
+static int fill_hur_item(struct hsm_user_request *hur, unsigned int idx,
+                        const char *mntpath, const char *fname,
+                        dev_t *last_dev)
+{
+       struct hsm_user_item *hui = &hur->hur_user_item[idx];
+       int rc;
 
-        if (optind != argc - 1) {
-                fprintf(stderr, "error: unexpected parameters encountered\n");
-                return CMD_HELP;
-        }
+       hui->hui_extent.length = -1;
 
-        mnt = argv[optind];
-        rc = llapi_quotactl(mnt, &qctl);
-        if (rc) {
-                if (*obd_type)
-                        fprintf(stderr, "%s %s ", obd_type,
-                                obd_uuid2str(&qctl.obd_uuid));
-                fprintf(stderr, "setquota failed: %s\n", strerror(-rc));
-                return rc;
-        }
+       if (mntpath != NULL) {
+               if (*fname == '[')
+                       fname++;
+               rc = sscanf(fname, SFID, RFID(&hui->hui_fid));
+               if (rc == 3) {
+                       rc = 0;
+               } else {
+                       fprintf(stderr, "hsm: '%s' is not a valid FID\n",
+                               fname);
+                       rc = -EINVAL;
+               }
+       } else {
+               rc = lfs_hsm_prepare_file(fname, &hui->hui_fid, last_dev);
+       }
 
-        return 0;
-}
+       if (rc == 0)
+               hur->hur_request.hr_itemcount++;
 
-#define BSLIMIT (1 << 0)
-#define BHLIMIT (1 << 1)
-#define ISLIMIT (1 << 2)
-#define IHLIMIT (1 << 3)
+       return rc;
+}
 
-int lfs_setquota(int argc, char **argv)
+static int lfs_hsm_request(int argc, char **argv, int action)
 {
-        int c, rc;
-        struct if_quotactl qctl;
-        char *mnt, *obd_type = (char *)qctl.obd_type;
-        struct obd_dqblk *dqb = &qctl.qc_dqblk;
-        struct option long_opts[] = {
-       { .val = 'b',   .name = "block-softlimit",
-                                               .has_arg = required_argument },
-       { .val = 'B',   .name = "block-hardlimit",
-                                               .has_arg = required_argument },
-       { .val = 'g',   .name = "group",        .has_arg = required_argument },
-       { .val = 'i',   .name = "inode-softlimit",
-                                               .has_arg = required_argument },
-       { .val = 'I',   .name = "inode-hardlimit",
-                                               .has_arg = required_argument },
-       { .val = 'p',   .name = "projid",       .has_arg = required_argument },
-       { .val = 'u',   .name = "user",         .has_arg = required_argument },
+       struct option long_opts[] = {
+       { .val = 'a',   .name = "archive",      .has_arg = required_argument },
+       { .val = 'D',   .name = "data",         .has_arg = required_argument },
+       { .val = 'l',   .name = "filelist",     .has_arg = required_argument },
+       { .val = 'm',   .name = "mntpath",      .has_arg = required_argument },
        { .name = NULL } };
-        unsigned limit_mask = 0;
-        char *endptr;
-       int qtype;
-
-       if (has_times_option(argc, argv))
-               return lfs_setquota_times(argc, argv);
+       dev_t                    last_dev = 0;
+       char                     short_opts[] = "l:D:a:m:";
+       struct hsm_user_request *hur, *oldhur;
+       int                      c, i;
+       size_t                   len;
+       int                      nbfile;
+       char                    *line = NULL;
+       char                    *filelist = NULL;
+       char                     fullpath[PATH_MAX];
+       char                    *opaque = NULL;
+       int                      opaque_len = 0;
+       int                      archive_id = 0;
+       FILE                    *fp;
+       int                      nbfile_alloc = 0;
+       char                    *some_file = NULL;
+       char                    *mntpath = NULL;
+       int                      rc;
 
-       memset(&qctl, 0, sizeof(qctl));
-       qctl.qc_cmd  = LUSTRE_Q_SETQUOTA;
-       qctl.qc_type = ALLQUOTA; /* ALLQUOTA makes no sense for setquota,
-                                 * so it can be used as a marker that qc_type
-                                 * isn't reinitialized from command line */
+       if (argc < 2)
+               return CMD_HELP;
 
-       while ((c = getopt_long(argc, argv, "b:B:g:i:I:p:u:",
-               long_opts, NULL)) != -1) {
+       while ((c = getopt_long(argc, argv, short_opts,
+                               long_opts, NULL)) != -1) {
                switch (c) {
-               case 'u':
-                       qtype = USRQUOTA;
-                       rc = name2uid(&qctl.qc_id, optarg);
-                       goto quota_type;
-                case 'g':
-                       qtype = GRPQUOTA;
-                       rc = name2gid(&qctl.qc_id, optarg);
-                       goto quota_type;
-               case 'p':
-                       qtype = PRJQUOTA;
-                       rc = name2projid(&qctl.qc_id, optarg);
-quota_type:
-                       if (qctl.qc_type != ALLQUOTA) {
-                               fprintf(stderr, "error: -u and -g can't be used"
-                                               " more than once\n");
+               case 'l':
+                       filelist = optarg;
+                       break;
+               case 'D':
+                       opaque = optarg;
+                       break;
+               case 'a':
+                       if (action != HUA_ARCHIVE &&
+                           action != HUA_REMOVE) {
+                               fprintf(stderr,
+                                       "error: -a is supported only "
+                                       "when archiving or removing\n");
                                return CMD_HELP;
-                        }
-                       qctl.qc_type = qtype;
-                       if (rc) {
-                               qctl.qc_id = strtoul(optarg, &endptr, 10);
-                               if (*endptr != '\0') {
-                                       fprintf(stderr, "error: can't find id "
-                                               "for name %s\n", optarg);
-                                       return CMD_HELP;
-                               }
                        }
+                       archive_id = atoi(optarg);
                        break;
-                case 'b':
-                       ARG2ULL(dqb->dqb_bsoftlimit, optarg, 1024);
-                       dqb->dqb_bsoftlimit >>= 10;
-                       limit_mask |= BSLIMIT;
-                       if (dqb->dqb_bsoftlimit &&
-                           dqb->dqb_bsoftlimit <= 1024) /* <= 1M? */
-                               fprintf(stderr, "warning: block softlimit is "
-                                       "smaller than the miminal qunit size, "
-                                       "please see the help of setquota or "
-                                       "Lustre manual for details.\n");
-                        break;
-                case 'B':
-                        ARG2ULL(dqb->dqb_bhardlimit, optarg, 1024);
-                        dqb->dqb_bhardlimit >>= 10;
-                        limit_mask |= BHLIMIT;
-                       if (dqb->dqb_bhardlimit &&
-                           dqb->dqb_bhardlimit <= 1024) /* <= 1M? */
-                               fprintf(stderr, "warning: block hardlimit is "
-                                       "smaller than the miminal qunit size, "
-                                       "please see the help of setquota or "
-                                       "Lustre manual for details.\n");
-                        break;
-                case 'i':
-                        ARG2ULL(dqb->dqb_isoftlimit, optarg, 1);
-                        limit_mask |= ISLIMIT;
-                       if (dqb->dqb_isoftlimit &&
-                           dqb->dqb_isoftlimit <= 1024) /* <= 1K inodes? */
-                               fprintf(stderr, "warning: inode softlimit is "
-                                       "smaller than the miminal qunit size, "
-                                       "please see the help of setquota or "
-                                       "Lustre manual for details.\n");
-                        break;
-                case 'I':
-                        ARG2ULL(dqb->dqb_ihardlimit, optarg, 1);
-                        limit_mask |= IHLIMIT;
-                       if (dqb->dqb_ihardlimit &&
-                           dqb->dqb_ihardlimit <= 1024) /* <= 1K inodes? */
-                               fprintf(stderr, "warning: inode hardlimit is "
-                                       "smaller than the miminal qunit size, "
-                                       "please see the help of setquota or "
-                                       "Lustre manual for details.\n");
-                        break;
-                default: /* getopt prints error message for us when opterr != 0 */
+               case 'm':
+                       if (some_file == NULL) {
+                               mntpath = optarg;
+                               some_file = strdup(optarg);
+                       }
+                       break;
+               case '?':
+                       return CMD_HELP;
+               default:
+                       fprintf(stderr, "error: %s: option '%s' unrecognized\n",
+                               argv[0], argv[optind - 1]);
                        return CMD_HELP;
                }
        }
 
-       if (qctl.qc_type == ALLQUOTA) {
-               fprintf(stderr, "error: neither -u, -g nor -p was specified\n");
+       /* All remaining args are files, so we have at least nbfile */
+       nbfile = argc - optind;
+
+       if ((nbfile == 0) && (filelist == NULL))
                return CMD_HELP;
+
+       if (opaque != NULL)
+               opaque_len = strlen(opaque);
+
+       /* Alloc the request structure with enough place to store all files
+        * from command line. */
+       hur = llapi_hsm_user_request_alloc(nbfile, opaque_len);
+       if (hur == NULL) {
+               fprintf(stderr, "Cannot create the request: %s\n",
+                       strerror(errno));
+               return errno;
        }
+       nbfile_alloc = nbfile;
 
-        if (limit_mask == 0) {
-                fprintf(stderr, "error: at least one limit must be specified\n");
-                return CMD_HELP;
-        }
+       hur->hur_request.hr_action = action;
+       hur->hur_request.hr_archive_id = archive_id;
+       hur->hur_request.hr_flags = 0;
 
-        if (optind != argc - 1) {
-                fprintf(stderr, "error: unexpected parameters encountered\n");
-                return CMD_HELP;
-        }
+       /* All remaining args are files, add them */
+       if (nbfile != 0 && some_file == NULL)
+               some_file = strdup(argv[optind]);
 
-        mnt = argv[optind];
+       for (i = 0; i < nbfile; i++) {
+               rc = fill_hur_item(hur, i, mntpath, argv[optind + i],
+                                  &last_dev);
+               if (rc)
+                       goto out_free;
+       }
 
-        if ((!(limit_mask & BHLIMIT) ^ !(limit_mask & BSLIMIT)) ||
-            (!(limit_mask & IHLIMIT) ^ !(limit_mask & ISLIMIT))) {
-                /* sigh, we can't just set blimits/ilimits */
-                struct if_quotactl tmp_qctl = {.qc_cmd  = LUSTRE_Q_GETQUOTA,
-                                               .qc_type = qctl.qc_type,
-                                               .qc_id   = qctl.qc_id};
-
-                rc = llapi_quotactl(mnt, &tmp_qctl);
-                if (rc < 0) {
-                        fprintf(stderr, "error: setquota failed while retrieving"
-                                        " current quota settings (%s)\n",
-                                        strerror(-rc));
-                        return rc;
-                }
+       /* from here stop using nb_file, use hur->hur_request.hr_itemcount */
 
-                if (!(limit_mask & BHLIMIT))
-                        dqb->dqb_bhardlimit = tmp_qctl.qc_dqblk.dqb_bhardlimit;
-                if (!(limit_mask & BSLIMIT))
-                        dqb->dqb_bsoftlimit = tmp_qctl.qc_dqblk.dqb_bsoftlimit;
-                if (!(limit_mask & IHLIMIT))
-                        dqb->dqb_ihardlimit = tmp_qctl.qc_dqblk.dqb_ihardlimit;
-                if (!(limit_mask & ISLIMIT))
-                        dqb->dqb_isoftlimit = tmp_qctl.qc_dqblk.dqb_isoftlimit;
-
-                /* Keep grace times if we have got no softlimit arguments */
-                if ((limit_mask & BHLIMIT) && !(limit_mask & BSLIMIT)) {
-                        dqb->dqb_valid |= QIF_BTIME;
-                        dqb->dqb_btime = tmp_qctl.qc_dqblk.dqb_btime;
-                }
+       /* If a filelist was specified, read the filelist from it. */
+       if (filelist != NULL) {
+               fp = fopen(filelist, "r");
+               if (fp == NULL) {
+                       fprintf(stderr, "Cannot read the file list %s: %s\n",
+                               filelist, strerror(errno));
+                       rc = -errno;
+                       goto out_free;
+               }
 
-                if ((limit_mask & IHLIMIT) && !(limit_mask & ISLIMIT)) {
-                        dqb->dqb_valid |= QIF_ITIME;
-                        dqb->dqb_itime = tmp_qctl.qc_dqblk.dqb_itime;
-                }
-        }
+               while ((rc = getline(&line, &len, fp)) != -1) {
+                       /* If allocated buffer was too small, get something
+                        * larger */
+                       if (nbfile_alloc <= hur->hur_request.hr_itemcount) {
+                               ssize_t size;
+
+                               nbfile_alloc = nbfile_alloc * 2 + 1;
+                               oldhur = hur;
+                               hur = llapi_hsm_user_request_alloc(nbfile_alloc,
+                                                                  opaque_len);
+                               if (hur == NULL) {
+                                       fprintf(stderr, "hsm: cannot allocate "
+                                               "the request: %s\n",
+                                               strerror(errno));
+                                       hur = oldhur;
+                                       rc = -errno;
+                                       fclose(fp);
+                                       goto out_free;
+                               }
+                               size = hur_len(oldhur);
+                               if (size < 0) {
+                                       fprintf(stderr, "hsm: cannot allocate "
+                                               "%u files + %u bytes data\n",
+                                           oldhur->hur_request.hr_itemcount,
+                                           oldhur->hur_request.hr_data_len);
+                                       free(hur);
+                                       hur = oldhur;
+                                       rc = -E2BIG;
+                                       fclose(fp);
+                                       goto out_free;
+                               }
+                               memcpy(hur, oldhur, size);
+                               free(oldhur);
+                       }
 
-        dqb->dqb_valid |= (limit_mask & (BHLIMIT | BSLIMIT)) ? QIF_BLIMITS : 0;
-        dqb->dqb_valid |= (limit_mask & (IHLIMIT | ISLIMIT)) ? QIF_ILIMITS : 0;
+                       /* Chop CR */
+                       if (line[strlen(line) - 1] == '\n')
+                               line[strlen(line) - 1] = '\0';
 
-        rc = llapi_quotactl(mnt, &qctl);
-        if (rc) {
-                if (*obd_type)
-                        fprintf(stderr, "%s %s ", obd_type,
-                                obd_uuid2str(&qctl.obd_uuid));
-                fprintf(stderr, "setquota failed: %s\n", strerror(-rc));
-                return rc;
-        }
+                       rc = fill_hur_item(hur, hur->hur_request.hr_itemcount,
+                                          mntpath, line, &last_dev);
+                       if (rc) {
+                               fclose(fp);
+                               goto out_free;
+                       }
+
+                       if (some_file == NULL) {
+                               some_file = line;
+                               line = NULL;
+                       }
+               }
+
+               rc = fclose(fp);
+               free(line);
+       }
+
+       /* If a --data was used, add it to the request */
+       hur->hur_request.hr_data_len = opaque_len;
+       if (opaque != NULL)
+               memcpy(hur_data(hur), opaque, opaque_len);
+
+       /* Send the HSM request */
+       if (realpath(some_file, fullpath) == NULL) {
+               fprintf(stderr, "Could not find path '%s': %s\n",
+                       some_file, strerror(errno));
+       }
+       rc = llapi_hsm_request(fullpath, hur);
+       if (rc) {
+               fprintf(stderr, "Cannot send HSM request (use of %s): %s\n",
+                       some_file, strerror(-rc));
+               goto out_free;
+       }
 
-        return 0;
+out_free:
+       free(some_file);
+       free(hur);
+       return rc;
 }
 
-/* Converts seconds value into format string
- * result is returned in buf
- * Notes:
- *        1. result is in descenting order: 1w2d3h4m5s
- *        2. zero fields are not filled (except for p. 3): 5d1s
- *        3. zero seconds value is presented as "0s"
- */
-static char * __sec2str(time_t seconds, char *buf)
+static int lfs_hsm_archive(int argc, char **argv)
 {
-        const char spec[] = "smhdw";
-        const unsigned long mult[] = {1, 60, 60*60, 24*60*60, 7*24*60*60};
-        unsigned long c;
-        char *tail = buf;
-        int i;
+       return lfs_hsm_request(argc, argv, HUA_ARCHIVE);
+}
 
-        for (i = sizeof(mult) / sizeof(mult[0]) - 1 ; i >= 0; i--) {
-                c = seconds / mult[i];
+static int lfs_hsm_restore(int argc, char **argv)
+{
+       return lfs_hsm_request(argc, argv, HUA_RESTORE);
+}
 
-                if (c > 0 || (i == 0 && buf == tail))
-                        tail += snprintf(tail, 40-(tail-buf), "%lu%c", c, spec[i]);
+static int lfs_hsm_release(int argc, char **argv)
+{
+       return lfs_hsm_request(argc, argv, HUA_RELEASE);
+}
 
-                seconds %= mult[i];
-        }
+static int lfs_hsm_remove(int argc, char **argv)
+{
+       return lfs_hsm_request(argc, argv, HUA_REMOVE);
+}
 
-        return tail;
+static int lfs_hsm_cancel(int argc, char **argv)
+{
+       return lfs_hsm_request(argc, argv, HUA_CANCEL);
 }
 
-static void sec2str(time_t seconds, char *buf, int rc)
+static int lfs_swap_layouts(int argc, char **argv)
 {
-        char *tail = buf;
+       if (argc != 3)
+               return CMD_HELP;
 
-        if (rc)
-                *tail++ = '[';
+       return llapi_swap_layouts(argv[1], argv[2], 0, 0,
+                                 SWAP_LAYOUTS_KEEP_MTIME |
+                                 SWAP_LAYOUTS_KEEP_ATIME);
+}
 
-        tail = __sec2str(seconds, tail);
+static const char *const ladvise_names[] = LU_LADVISE_NAMES;
 
-        if (rc && tail - buf < 39) {
-                *tail++ = ']';
-                *tail++ = 0;
-        }
-}
+static const char *const lock_mode_names[] = LOCK_MODE_NAMES;
 
-static void diff2str(time_t seconds, char *buf, time_t now)
+int lfs_get_mode(const char *string)
 {
+       enum lock_mode_user mode;
 
-        buf[0] = 0;
-        if (!seconds)
-                return;
-        if (seconds <= now) {
-                strcpy(buf, "none");
-                return;
-        }
-        __sec2str(seconds - now, buf);
-}
+       for (mode = 0; mode < ARRAY_SIZE(lock_mode_names); mode++) {
+               if (lock_mode_names[mode] == NULL)
+                       continue;
+               if (strcmp(string, lock_mode_names[mode]) == 0)
+                       return mode;
+       }
 
-static void print_quota_title(char *name, struct if_quotactl *qctl,
-                             bool human_readable)
-{
-       printf("Disk quotas for %s %s (%cid %u):\n",
-              qtype_name(qctl->qc_type), name,
-              *qtype_name(qctl->qc_type), qctl->qc_id);
-       printf("%15s%8s %7s%8s%8s%8s %7s%8s%8s\n",
-              "Filesystem", human_readable ? "used" : "kbytes",
-              "quota", "limit", "grace",
-              "files", "quota", "limit", "grace");
+       return -EINVAL;
 }
 
-static void kbytes2str(__u64 num, char *buf, int buflen, bool h)
+static enum lu_ladvise_type lfs_get_ladvice(const char *string)
 {
-       if (!h) {
-               snprintf(buf, buflen, "%ju", (uintmax_t)num);
-       } else {
-               if (num >> 40)
-                       snprintf(buf, buflen, "%5.4gP",
-                                (double)num / ((__u64)1 << 40));
-               else if (num >> 30)
-                       snprintf(buf, buflen, "%5.4gT",
-                                (double)num / (1 << 30));
-               else if (num >> 20)
-                       snprintf(buf, buflen, "%5.4gG",
-                                (double)num / (1 << 20));
-               else if (num >> 10)
-                       snprintf(buf, buflen, "%5.4gM",
-                                (double)num / (1 << 10));
-               else
-                       snprintf(buf, buflen, "%ju%s", (uintmax_t)num, "k");
+       enum lu_ladvise_type advice;
+
+       for (advice = 0;
+            advice < ARRAY_SIZE(ladvise_names); advice++) {
+               if (ladvise_names[advice] == NULL)
+                       continue;
+               if (strcmp(string, ladvise_names[advice]) == 0)
+                       return advice;
        }
+
+       return LU_LADVISE_INVALID;
 }
 
-#define STRBUF_LEN     32
-static void print_quota(char *mnt, struct if_quotactl *qctl, int type,
-                       int rc, bool h)
+static int lfs_ladvise(int argc, char **argv)
 {
-        time_t now;
-
-        time(&now);
+       struct option long_opts[] = {
+       { .val = 'a',   .name = "advice",       .has_arg = required_argument },
+       { .val = 'b',   .name = "background",   .has_arg = no_argument },
+       { .val = 'e',   .name = "end",          .has_arg = required_argument },
+       { .val = 'l',   .name = "length",       .has_arg = required_argument },
+       { .val = 'm',   .name = "mode",         .has_arg = required_argument },
+       { .val = 's',   .name = "start",        .has_arg = required_argument },
+       { .val = 'u',   .name = "unset",        .has_arg = no_argument },
+       { .name = NULL } };
+       char                     short_opts[] = "a:be:l:m:s:u";
+       int                      c;
+       int                      rc = 0;
+       const char              *path;
+       int                      fd;
+       struct llapi_lu_ladvise  advice;
+       enum lu_ladvise_type     advice_type = LU_LADVISE_INVALID;
+       unsigned long long       start = 0;
+       unsigned long long       end = LUSTRE_EOF;
+       unsigned long long       length = 0;
+       unsigned long long       size_units;
+       unsigned long long       flags = 0;
+       int                      mode = 0;
 
-        if (qctl->qc_cmd == LUSTRE_Q_GETQUOTA || qctl->qc_cmd == Q_GETOQUOTA) {
-               int bover = 0, iover = 0;
-               struct obd_dqblk *dqb = &qctl->qc_dqblk;
-               char numbuf[3][STRBUF_LEN];
-               char timebuf[40];
-               char strbuf[STRBUF_LEN];
+       optind = 0;
+       while ((c = getopt_long(argc, argv, short_opts,
+                               long_opts, NULL)) != -1) {
+               switch (c) {
+               case 'a':
+                       advice_type = lfs_get_ladvice(optarg);
+                       if (advice_type == LU_LADVISE_INVALID) {
+                               fprintf(stderr, "%s: invalid advice type "
+                                       "'%s'\n", argv[0], optarg);
+                               fprintf(stderr, "Valid types:");
 
-                if (dqb->dqb_bhardlimit &&
-                   lustre_stoqb(dqb->dqb_curspace) >= dqb->dqb_bhardlimit) {
-                        bover = 1;
-                } else if (dqb->dqb_bsoftlimit && dqb->dqb_btime) {
-                        if (dqb->dqb_btime > now) {
-                                bover = 2;
-                        } else {
-                                bover = 3;
-                        }
-                }
+                               for (advice_type = 0;
+                                    advice_type < ARRAY_SIZE(ladvise_names);
+                                    advice_type++) {
+                                       if (ladvise_names[advice_type] == NULL)
+                                               continue;
+                                       fprintf(stderr, " %s",
+                                               ladvise_names[advice_type]);
+                               }
+                               fprintf(stderr, "\n");
 
-                if (dqb->dqb_ihardlimit &&
-                    dqb->dqb_curinodes >= dqb->dqb_ihardlimit) {
-                        iover = 1;
-                } else if (dqb->dqb_isoftlimit && dqb->dqb_itime) {
-                       if (dqb->dqb_itime > now) {
-                               iover = 2;
-                       } else {
-                               iover = 3;
+                               return CMD_HELP;
                        }
-                }
+                       break;
+               case 'b':
+                       flags |= LF_ASYNC;
+                       break;
+               case 'u':
+                       flags |= LF_UNSET;
+                       break;
+               case 'e':
+                       size_units = 1;
+                       rc = llapi_parse_size(optarg, &end,
+                                             &size_units, 0);
+                       if (rc) {
+                               fprintf(stderr, "%s: bad end offset '%s'\n",
+                                       argv[0], optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+               case 's':
+                       size_units = 1;
+                       rc = llapi_parse_size(optarg, &start,
+                                             &size_units, 0);
+                       if (rc) {
+                               fprintf(stderr, "%s: bad start offset "
+                                       "'%s'\n", argv[0], optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+               case 'l':
+                       size_units = 1;
+                       rc = llapi_parse_size(optarg, &length,
+                                             &size_units, 0);
+                       if (rc) {
+                               fprintf(stderr, "%s: bad length '%s'\n",
+                                       argv[0], optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+               case 'm':
+                       mode = lfs_get_mode(optarg);
+                       if (mode < 0) {
+                               fprintf(stderr, "%s: bad mode '%s', valid "
+                                                "modes are READ or WRITE\n",
+                                       argv[0], optarg);
+                               return CMD_HELP;
+                       }
+                       break;
+               case '?':
+                       return CMD_HELP;
+               default:
+                       fprintf(stderr, "%s: option '%s' unrecognized\n",
+                               argv[0], argv[optind - 1]);
+                       return CMD_HELP;
+               }
+       }
+
+       if (advice_type == LU_LADVISE_INVALID) {
+               fprintf(stderr, "%s: please give an advice type\n", argv[0]);
+               fprintf(stderr, "Valid types:");
+               for (advice_type = 0; advice_type < ARRAY_SIZE(ladvise_names);
+                    advice_type++) {
+                       if (ladvise_names[advice_type] == NULL)
+                               continue;
+                       fprintf(stderr, " %s", ladvise_names[advice_type]);
+               }
+               fprintf(stderr, "\n");
+               return CMD_HELP;
+       }
 
+       if (advice_type == LU_LADVISE_LOCKNOEXPAND) {
+               fprintf(stderr, "%s: Lock no expand advice is a per file "
+                                "descriptor advice, so when called from lfs, "
+                                "it does nothing.\n", argv[0]);
+               return CMD_HELP;
+       }
 
-               if (strlen(mnt) > 15)
-                       printf("%s\n%15s", mnt, "");
-               else
-                       printf("%15s", mnt);
+       if (argc <= optind) {
+               fprintf(stderr, "%s: please give one or more file names\n",
+                       argv[0]);
+               return CMD_HELP;
+       }
 
-               if (bover)
-                       diff2str(dqb->dqb_btime, timebuf, now);
+       if (end != LUSTRE_EOF && length != 0 && end != start + length) {
+               fprintf(stderr, "%s: conflicting arguments of -l and -e\n",
+                       argv[0]);
+               return CMD_HELP;
+       }
 
-               kbytes2str(lustre_stoqb(dqb->dqb_curspace),
-                          strbuf, sizeof(strbuf), h);
-               if (rc == -EREMOTEIO)
-                       sprintf(numbuf[0], "%s*", strbuf);
-               else
-                       sprintf(numbuf[0], (dqb->dqb_valid & QIF_SPACE) ?
-                               "%s" : "[%s]", strbuf);
+       if (end == LUSTRE_EOF && length != 0)
+               end = start + length;
 
-               kbytes2str(dqb->dqb_bsoftlimit, strbuf, sizeof(strbuf), h);
-               if (type == QC_GENERAL)
-                       sprintf(numbuf[1], (dqb->dqb_valid & QIF_BLIMITS) ?
-                               "%s" : "[%s]", strbuf);
-               else
-                       sprintf(numbuf[1], "%s", "-");
+       if (end <= start) {
+               fprintf(stderr, "%s: range [%llu, %llu] is invalid\n",
+                       argv[0], start, end);
+               return CMD_HELP;
+       }
 
-               kbytes2str(dqb->dqb_bhardlimit, strbuf, sizeof(strbuf), h);
-               sprintf(numbuf[2], (dqb->dqb_valid & QIF_BLIMITS) ?
-                       "%s" : "[%s]", strbuf);
+       if (advice_type != LU_LADVISE_LOCKAHEAD && mode != 0) {
+               fprintf(stderr, "%s: mode is only valid with lockahead\n",
+                       argv[0]);
+               return CMD_HELP;
+       }
 
-               printf(" %7s%c %6s %7s %7s",
-                      numbuf[0], bover ? '*' : ' ', numbuf[1],
-                      numbuf[2], bover > 1 ? timebuf : "-");
+       if (advice_type == LU_LADVISE_LOCKAHEAD && mode == 0) {
+               fprintf(stderr, "%s: mode is required with lockahead\n",
+                       argv[0]);
+               return CMD_HELP;
+       }
 
-               if (iover)
-                       diff2str(dqb->dqb_itime, timebuf, now);
+       while (optind < argc) {
+               int rc2;
 
-               sprintf(numbuf[0], (dqb->dqb_valid & QIF_INODES) ?
-                       "%ju" : "[%ju]", (uintmax_t)dqb->dqb_curinodes);
+               path = argv[optind++];
 
-               if (type == QC_GENERAL)
-                       sprintf(numbuf[1], (dqb->dqb_valid & QIF_ILIMITS) ?
-                               "%ju" : "[%ju]",
-                               (uintmax_t)dqb->dqb_isoftlimit);
-               else
-                       sprintf(numbuf[1], "%s", "-");
+               fd = open(path, O_RDONLY);
+               if (fd < 0) {
+                       fprintf(stderr, "%s: cannot open file '%s': %s\n",
+                               argv[0], path, strerror(errno));
+                       rc2 = -errno;
+                       goto next;
+               }
 
-               sprintf(numbuf[2], (dqb->dqb_valid & QIF_ILIMITS) ?
-                       "%ju" : "[%ju]", (uintmax_t)dqb->dqb_ihardlimit);
+               advice.lla_start = start;
+               advice.lla_end = end;
+               advice.lla_advice = advice_type;
+               advice.lla_value1 = 0;
+               advice.lla_value2 = 0;
+               advice.lla_value3 = 0;
+               advice.lla_value4 = 0;
+               if (advice_type == LU_LADVISE_LOCKAHEAD) {
+                       advice.lla_lockahead_mode = mode;
+                       advice.lla_peradvice_flags = flags;
+               }
 
-               if (type != QC_OSTIDX)
-                       printf(" %7s%c %6s %7s %7s",
-                              numbuf[0], iover ? '*' : ' ', numbuf[1],
-                              numbuf[2], iover > 1 ? timebuf : "-");
-               else
-                       printf(" %7s %7s %7s %7s", "-", "-", "-", "-");
-               printf("\n");
+               rc2 = llapi_ladvise(fd, flags, 1, &advice);
+               close(fd);
+               if (rc2 < 0) {
+                       fprintf(stderr, "%s: cannot give advice '%s' to file "
+                               "'%s': %s\n", argv[0],
+                               ladvise_names[advice_type],
+                               path, strerror(errno));
 
-        } else if (qctl->qc_cmd == LUSTRE_Q_GETINFO ||
-                   qctl->qc_cmd == Q_GETOINFO) {
-                char bgtimebuf[40];
-                char igtimebuf[40];
+                       goto next;
+               }
 
-                sec2str(qctl->qc_dqinfo.dqi_bgrace, bgtimebuf, rc);
-                sec2str(qctl->qc_dqinfo.dqi_igrace, igtimebuf, rc);
-                printf("Block grace time: %s; Inode grace time: %s\n",
-                       bgtimebuf, igtimebuf);
-        }
+next:
+               if (rc == 0 && rc2 < 0)
+                       rc = rc2;
+       }
+       return rc;
 }
 
-static int print_obd_quota(char *mnt, struct if_quotactl *qctl, int is_mdt,
-                          bool h, __u64 *total)
+
+static const char *const heat_names[] = LU_HEAT_NAMES;
+
+static int lfs_heat_get(int argc, char **argv)
 {
-        int rc = 0, rc1 = 0, count = 0;
-        __u32 valid = qctl->qc_valid;
+       struct lu_heat  *heat;
+       int              rc = 0, rc2;
+       char            *path;
+       int              fd;
+       int              i;
 
-        rc = llapi_get_obd_count(mnt, &count, is_mdt);
-        if (rc) {
-                fprintf(stderr, "can not get %s count: %s\n",
-                        is_mdt ? "mdt": "ost", strerror(-rc));
-                return rc;
-        }
+       if (argc <= 1)
+               return CMD_HELP;
 
-        for (qctl->qc_idx = 0; qctl->qc_idx < count; qctl->qc_idx++) {
-                qctl->qc_valid = is_mdt ? QC_MDTIDX : QC_OSTIDX;
-                rc = llapi_quotactl(mnt, qctl);
-                if (rc) {
-                       /* It is remote client case. */
-                       if (rc == -EOPNOTSUPP) {
-                                rc = 0;
-                                goto out;
-                        }
+       heat = calloc(sizeof(*heat) + sizeof(__u64) * OBD_HEAT_COUNT, 1);
+       if (!heat) {
+               fprintf(stderr, "%s: memory allocation failed\n", argv[0]);
+               return -ENOMEM;
+       }
 
-                        if (!rc1)
-                                rc1 = rc;
-                        fprintf(stderr, "quotactl %s%d failed.\n",
-                                is_mdt ? "mdt": "ost", qctl->qc_idx);
-                        continue;
-                }
+       optind = 1;
+       while (optind < argc) {
+               path = argv[optind++];
 
-               print_quota(obd_uuid2str(&qctl->obd_uuid), qctl,
-                           qctl->qc_valid, 0, h);
-               *total += is_mdt ? qctl->qc_dqblk.dqb_ihardlimit :
-                                  qctl->qc_dqblk.dqb_bhardlimit;
+               fd = open(path, O_RDONLY);
+               if (fd < 0) {
+                       fprintf(stderr, "%s: cannot open file '%s': %s\n",
+                               argv[0], path, strerror(errno));
+                       rc2 = -errno;
+                       goto next;
+               }
+
+               heat->lh_count = OBD_HEAT_COUNT;
+               rc2 = llapi_heat_get(fd, heat);
+               close(fd);
+               if (rc2 < 0) {
+                       fprintf(stderr, "%s: cannot get heat of file '%s'"
+                               ": %s\n", argv[0], path, strerror(errno));
+                       goto next;
+               }
+
+               printf("flags: %x\n", heat->lh_flags);
+               for (i = 0; i < heat->lh_count; i++)
+                       printf("%s: %llu\n", heat_names[i], heat->lh_heat[i]);
+next:
+               if (rc == 0 && rc2 < 0)
+                       rc = rc2;
        }
-out:
-       qctl->qc_valid = valid;
-       return rc ? : rc1;
+
+       free(heat);
+       return rc;
 }
 
-static int lfs_quota(int argc, char **argv)
+static int lfs_heat_set(int argc, char **argv)
 {
-       int c;
-       char *mnt, *name = NULL;
-       struct if_quotactl qctl = { .qc_cmd = LUSTRE_Q_GETQUOTA,
-                                   .qc_type = ALLQUOTA };
-       char *obd_type = (char *)qctl.obd_type;
-       char *obd_uuid = (char *)qctl.obd_uuid.uuid;
-       int rc = 0, rc1 = 0, rc2 = 0, rc3 = 0,
-           verbose = 0, pass = 0, quiet = 0, inacc;
-       char *endptr;
-       __u32 valid = QC_GENERAL, idx = 0;
-       __u64 total_ialloc = 0, total_balloc = 0;
-       bool human_readable = false;
-       int qtype;
+       struct option    long_opts[] = {
+               {"clear", no_argument, 0, 'c'},
+               {"off", no_argument, 0, 'o'},
+               {"on", no_argument, 0, 'O'},
+               {0, 0, 0, 0}
+       };
+       char             short_opts[] = "coO";
+       int              rc = 0, rc2;
+       char            *path;
+       int              fd;
+       __u64            flags = 0;
+       int              c;
+
+       if (argc <= 1)
+               return CMD_HELP;
 
-       while ((c = getopt(argc, argv, "gi:I:o:pqtuvh")) != -1) {
+       optind = 0;
+       while ((c = getopt_long(argc, argv, short_opts,
+                               long_opts, NULL)) != -1) {
                switch (c) {
-               case 'u':
-                       qtype = USRQUOTA;
-                       goto quota_type;
-               case 'g':
-                       qtype = GRPQUOTA;
-                       goto quota_type;
-               case 'p':
-                       qtype = PRJQUOTA;
-quota_type:
-                       if (qctl.qc_type != ALLQUOTA) {
-                               fprintf(stderr, "error: use either -u or -g\n");
-                               return CMD_HELP;
-                       }
-                       qctl.qc_type = qtype;
-                       break;
-                case 't':
-                        qctl.qc_cmd = LUSTRE_Q_GETINFO;
-                        break;
-                case 'o':
-                        valid = qctl.qc_valid = QC_UUID;
-                       strlcpy(obd_uuid, optarg, sizeof(qctl.obd_uuid));
-                        break;
-                case 'i':
-                        valid = qctl.qc_valid = QC_MDTIDX;
-                        idx = qctl.qc_idx = atoi(optarg);
-                        break;
-                case 'I':
-                        valid = qctl.qc_valid = QC_OSTIDX;
-                        idx = qctl.qc_idx = atoi(optarg);
-                        break;
-                case 'v':
-                        verbose = 1;
-                        break;
-                case 'q':
-                        quiet = 1;
-                        break;
-               case 'h':
-                       human_readable = true;
-                       break;
-                default:
-                        fprintf(stderr, "error: %s: option '-%c' "
-                                        "unrecognized\n", argv[0], c);
-                        return CMD_HELP;
-                }
-        }
-
-        /* current uid/gid info for "lfs quota /path/to/lustre/mount" */
-       if (qctl.qc_cmd == LUSTRE_Q_GETQUOTA && qctl.qc_type == ALLQUOTA &&
-           optind == argc - 1) {
-all_output:
-               memset(&qctl, 0, sizeof(qctl)); /* spoiled by print_*_quota */
-               qctl.qc_cmd = LUSTRE_Q_GETQUOTA;
-               qctl.qc_valid = valid;
-               qctl.qc_idx = idx;
-               qctl.qc_type = pass;
-               switch (qctl.qc_type) {
-               case USRQUOTA:
-                       qctl.qc_id = geteuid();
-                       rc = uid2name(&name, qctl.qc_id);
+               case 'c':
+                       flags |= LU_HEAT_FLAG_CLEAR;
                        break;
-               case GRPQUOTA:
-                       qctl.qc_id = getegid();
-                       rc = gid2name(&name, qctl.qc_id);
+               case 'o':
+                       flags |= LU_HEAT_FLAG_CLEAR;
+                       flags |= LU_HEAT_FLAG_OFF;
                        break;
-               default:
-                       rc = -ENOTSUP;
+               case 'O':
+                       flags &= ~LU_HEAT_FLAG_OFF;
                        break;
-               }
-               if (rc)
-                       name = "<unknown>";
-               pass++;
-       /* lfs quota -u username /path/to/lustre/mount */
-       } else if (qctl.qc_cmd == LUSTRE_Q_GETQUOTA) {
-               /* options should be followed by u/g-name and mntpoint */
-               if (optind + 2 != argc || qctl.qc_type == ALLQUOTA) {
-                       fprintf(stderr, "error: missing quota argument(s)\n");
+               case '?':
                        return CMD_HELP;
-               }
-
-               name = argv[optind++];
-               switch (qctl.qc_type) {
-               case USRQUOTA:
-                       rc = name2uid(&qctl.qc_id, name);
-                       break;
-               case GRPQUOTA:
-                       rc = name2gid(&qctl.qc_id, name);
-                       break;
-               case PRJQUOTA:
-                       rc = name2projid(&qctl.qc_id, name);
-                       break;
                default:
-                       rc = -ENOTSUP;
-                       break;
-               }
-               if (rc) {
-                       qctl.qc_id = strtoul(name, &endptr, 10);
-                       if (*endptr != '\0') {
-                               fprintf(stderr, "error: can't find id for name: %s\n",
-                                               name);
-                               return CMD_HELP;
-                       }
+                       fprintf(stderr, "%s: option '%s' unrecognized\n",
+                               argv[0], argv[optind - 1]);
+                       return CMD_HELP;
                }
-       } else if (optind + 1 != argc || qctl.qc_type == ALLQUOTA) {
-               fprintf(stderr, "error: missing quota info argument(s)\n");
+       }
+
+       if (argc <= optind) {
+               fprintf(stderr, "%s: please give one or more file names\n",
+                       argv[0]);
                return CMD_HELP;
        }
 
-       mnt = argv[optind];
-       rc1 = llapi_quotactl(mnt, &qctl);
-       if (rc1 < 0) {
-               switch (rc1) {
-               case -ESRCH:
-                       fprintf(stderr, "%s quotas are not enabled.\n",
-                               qtype_name(qctl.qc_type));
-                       goto out;
-               case -EPERM:
-                       fprintf(stderr, "Permission denied.\n");
-               case -ENODEV:
-               case -ENOENT:
-                       /* We already got error message. */
-                       goto out;
-               default:
-                       fprintf(stderr, "Unexpected quotactl error: %s\n",
-                               strerror(-rc1));
+       while (optind < argc) {
+               path = argv[optind++];
+
+               fd = open(path, O_RDONLY);
+               if (fd < 0) {
+                       fprintf(stderr, "%s: cannot open file '%s': %s\n",
+                               argv[0], path, strerror(errno));
+                       rc2 = -errno;
+                       goto next;
+               }
+
+               rc2 = llapi_heat_set(fd, flags);
+               close(fd);
+               if (rc2 < 0) {
+                       fprintf(stderr, "%s: cannot setflags heat of file '%s'"
+                               ": %s\n", argv[0], path, strerror(errno));
+                       goto next;
                }
+next:
+               if (rc == 0 && rc2 < 0)
+                       rc = rc2;
        }
+       return rc;
+}
 
-       if (qctl.qc_cmd == LUSTRE_Q_GETQUOTA && !quiet)
-               print_quota_title(name, &qctl, human_readable);
+/** The input string contains a comma delimited list of component ids and
+ * ranges, for example "1,2-4,7".
+ */
+static int parse_mirror_ids(__u16 *ids, int size, char *arg)
+{
+       bool end_of_loop = false;
+       char *ptr = NULL;
+       int nr = 0;
+       int rc;
 
-        if (rc1 && *obd_type)
-                fprintf(stderr, "%s %s ", obd_type, obd_uuid);
+       if (arg == NULL)
+               return -EINVAL;
 
-        if (qctl.qc_valid != QC_GENERAL)
-                mnt = "";
+       while (!end_of_loop) {
+               int start_index;
+               int end_index;
+               int i;
+               char *endptr = NULL;
 
-       inacc = (qctl.qc_cmd == LUSTRE_Q_GETQUOTA) &&
-               ((qctl.qc_dqblk.dqb_valid & (QIF_LIMITS|QIF_USAGE)) !=
-                (QIF_LIMITS|QIF_USAGE));
+               rc = -EINVAL;
+               ptr = strchrnul(arg, ',');
+               end_of_loop = *ptr == '\0';
+               *ptr = '\0';
 
-       print_quota(mnt, &qctl, QC_GENERAL, rc1, human_readable);
+               start_index = strtol(arg, &endptr, 0);
+               if (endptr == arg) /* no data at all */
+                       break;
+               if (*endptr != '-' && *endptr != '\0') /* has invalid data */
+                       break;
+               if (start_index < 0)
+                       break;
 
-       if (qctl.qc_valid == QC_GENERAL && qctl.qc_cmd != LUSTRE_Q_GETINFO &&
-           verbose) {
-               char strbuf[STRBUF_LEN];
+               end_index = start_index;
+               if (*endptr == '-') {
+                       end_index = strtol(endptr + 1, &endptr, 0);
+                       if (*endptr != '\0')
+                               break;
+                       if (end_index < start_index)
+                               break;
+               }
 
-               rc2 = print_obd_quota(mnt, &qctl, 1, human_readable,
-                                     &total_ialloc);
-               rc3 = print_obd_quota(mnt, &qctl, 0, human_readable,
-                                     &total_balloc);
-               kbytes2str(total_balloc, strbuf, sizeof(strbuf),
-                          human_readable);
-               printf("Total allocated inode limit: %ju, total "
-                      "allocated block limit: %s\n", (uintmax_t)total_ialloc,
-                      strbuf);
-       }
+               for (i = start_index; i <= end_index && size > 0; i++) {
+                       int j;
 
-       if (rc1 || rc2 || rc3 || inacc)
-               printf("Some errors happened when getting quota info. "
-                      "Some devices may be not working or deactivated. "
-                      "The data in \"[]\" is inaccurate.\n");
+                       /* remove duplicate */
+                       for (j = 0; j < nr; j++) {
+                               if (ids[j] == i)
+                                       break;
+                       }
+                       if (j == nr) { /* no duplicate */
+                               ids[nr++] = i;
+                               --size;
+                       }
+               }
 
-out:
-       if (pass > 0 && pass < LL_MAXQUOTAS)
-               goto all_output;
+               if (size == 0 && i < end_index)
+                       break;
 
-       return rc1;
+               *ptr = ',';
+               arg = ++ptr;
+               rc = 0;
+       }
+       if (!end_of_loop && ptr != NULL)
+               *ptr = ',';
+
+       return rc < 0 ? rc : nr;
 }
-#endif /* HAVE_SYS_QUOTA_H! */
 
-static int flushctx_ioctl(char *mp)
+/**
+ * struct verify_mirror_id - Mirror id to be verified.
+ * @mirror_id:   A specified mirror id.
+ * @is_valid_id: @mirror_id is valid or not in the mirrored file.
+ */
+struct verify_mirror_id {
+       __u16 mirror_id;
+       bool is_valid_id;
+};
+
+/**
+ * compare_mirror_ids() - Compare mirror ids.
+ * @layout: Mirror component list.
+ * @cbdata: Callback data in verify_mirror_id structure.
+ *
+ * This is a callback function called by llapi_layout_comp_iterate()
+ * to compare the specified mirror id with the one in the current
+ * component of @layout. If they are the same, then the specified
+ * mirror id is valid.
+ *
+ * Return: a negative error code on failure or
+ *        LLAPI_LAYOUT_ITER_CONT: Proceed iteration
+ *        LLAPI_LAYOUT_ITER_STOP: Stop iteration
+ */
+static inline
+int compare_mirror_ids(struct llapi_layout *layout, void *cbdata)
 {
-        int fd, rc;
+       struct verify_mirror_id *mirror_id_cbdata =
+                                (struct verify_mirror_id *)cbdata;
+       uint32_t mirror_id;
+       int rc = 0;
 
-        fd = open(mp, O_RDONLY);
-        if (fd == -1) {
-                fprintf(stderr, "flushctx: error open %s: %s\n",
-                        mp, strerror(errno));
-                return -1;
-        }
+       rc = llapi_layout_mirror_id_get(layout, &mirror_id);
+       if (rc < 0) {
+               rc = -errno;
+               fprintf(stderr,
+                       "%s: llapi_layout_mirror_id_get failed: %s.\n",
+                       progname, strerror(errno));
+               return rc;
+       }
 
-        rc = ioctl(fd, LL_IOC_FLUSHCTX);
-        if (rc == -1)
-                fprintf(stderr, "flushctx: error ioctl %s: %s\n",
-                        mp, strerror(errno));
+       if (mirror_id_cbdata->mirror_id == mirror_id) {
+               mirror_id_cbdata->is_valid_id = true;
+               return LLAPI_LAYOUT_ITER_STOP;
+       }
 
-        close(fd);
-        return rc;
+       return LLAPI_LAYOUT_ITER_CONT;
 }
 
-static int lfs_flushctx(int argc, char **argv)
+/**
+ * verify_mirror_ids() - Verify specified mirror ids.
+ * @fname:      Mirrored file name.
+ * @mirror_ids: Specified mirror ids to be verified.
+ * @ids_nr:     Number of specified mirror ids.
+ *
+ * This function verifies that specified @mirror_ids are valid
+ * in the mirrored file @fname.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+static inline
+int verify_mirror_ids(const char *fname, __u16 *mirror_ids, int ids_nr)
 {
-       int     kdestroy = 0, c;
-       char    mntdir[PATH_MAX] = {'\0'};
-       int     index = 0;
-       int     rc = 0;
+       struct llapi_layout *layout = NULL;
+       struct verify_mirror_id mirror_id_cbdata = { 0 };
+       struct stat stbuf;
+       uint32_t flr_state;
+       int i;
+       int fd;
+       int rc = 0;
+       int rc2 = 0;
 
-        while ((c = getopt(argc, argv, "k")) != -1) {
-                switch (c) {
-                case 'k':
-                        kdestroy = 1;
-                        break;
-                default:
-                        fprintf(stderr, "error: %s: option '-%c' "
-                                        "unrecognized\n", argv[0], c);
-                        return CMD_HELP;
-                }
-        }
+       if (ids_nr <= 0)
+               return -EINVAL;
 
-        if (kdestroy) {
-            if ((rc = system("kdestroy > /dev/null")) != 0) {
-                rc = WEXITSTATUS(rc);
-                fprintf(stderr, "error destroying tickets: %d, continuing\n", rc);
-            }
-        }
+       if (stat(fname, &stbuf) < 0) {
+               fprintf(stderr, "%s: cannot stat file '%s': %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto error;
+       }
 
-       if (optind >= argc) {
-               /* flush for all mounted lustre fs. */
-               while (!llapi_search_mounts(NULL, index++, mntdir, NULL)) {
-                       /* Check if we have a mount point */
-                       if (mntdir[0] == '\0')
-                               continue;
+       if (!S_ISREG(stbuf.st_mode)) {
+               fprintf(stderr, "%s: '%s' is not a regular file.\n",
+                       progname, fname);
+               rc = -EINVAL;
+               goto error;
+       }
 
-                       if (flushctx_ioctl(mntdir))
-                               rc = -1;
+       fd = open(fname, O_DIRECT | O_RDONLY);
+       if (fd < 0) {
+               fprintf(stderr, "%s: cannot open '%s': %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto error;
+       }
 
-                       mntdir[0] = '\0'; /* avoid matching in next loop */
+       rc = llapi_lease_acquire(fd, LL_LEASE_RDLCK);
+       if (rc < 0) {
+               fprintf(stderr, "%s: '%s' llapi_lease_acquire failed: %s.\n",
+                       progname, fname, strerror(errno));
+               goto close_fd;
+       }
+
+       layout = llapi_layout_get_by_fd(fd, 0);
+       if (layout == NULL) {
+               fprintf(stderr, "%s: '%s' llapi_layout_get_by_fd failed: %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               llapi_lease_release(fd);
+               goto close_fd;
+       }
+
+       rc = llapi_layout_flags_get(layout, &flr_state);
+       if (rc < 0) {
+               fprintf(stderr, "%s: '%s' llapi_layout_flags_get failed: %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto free_layout;
+       }
+
+       flr_state &= LCM_FL_FLR_MASK;
+       switch (flr_state) {
+       case LCM_FL_NONE:
+               rc = -EINVAL;
+               fprintf(stderr, "%s: '%s' file state error: %s.\n",
+                       progname, fname, llapi_layout_flags_string(flr_state));
+               goto free_layout;
+       default:
+               break;
+       }
+
+       rc2 = 0;
+       for (i = 0; i < ids_nr; i++) {
+               mirror_id_cbdata.mirror_id = mirror_ids[i];
+               mirror_id_cbdata.is_valid_id = false;
+
+               rc = llapi_layout_comp_iterate(layout, compare_mirror_ids,
+                                              &mirror_id_cbdata);
+               if (rc < 0) {
+                       rc = -errno;
+                       fprintf(stderr,
+                               "%s: '%s' failed to verify mirror id: %u.\n",
+                               progname, fname, mirror_ids[i]);
+                       goto free_layout;
                }
-        } else {
-                /* flush fs as specified */
-                while (optind < argc) {
-                        if (flushctx_ioctl(argv[optind++]))
-                                rc = -1;
-                }
-        }
-        return rc;
-}
 
-static int lfs_cp(int argc, char **argv)
-{
-       fprintf(stderr, "remote client copy file(s).\n"
-               "obsolete, does not support it anymore.\n");
-       return 0;
-}
+               if (!mirror_id_cbdata.is_valid_id) {
+                       rc2 = -EINVAL;
+                       fprintf(stderr,
+                               "%s: '%s' invalid specified mirror id: %u.\n",
+                               progname, fname, mirror_ids[i]);
+               }
+       }
+       rc = rc2;
 
-static int lfs_ls(int argc, char **argv)
-{
-       fprintf(stderr, "remote client lists directory contents.\n"
-               "obsolete, does not support it anymore.\n");
-       return 0;
+free_layout:
+       llapi_layout_free(layout);
+       llapi_lease_release(fd);
+close_fd:
+       close(fd);
+error:
+       return rc;
 }
 
-static int lfs_changelog(int argc, char **argv)
+static inline
+int lfs_mirror_resync_file(const char *fname, struct ll_ioc_lease *ioc,
+                          __u16 *mirror_ids, int ids_nr)
 {
-       void *changelog_priv;
-       struct changelog_rec *rec;
-       long long startrec = 0, endrec = 0;
-       char *mdd;
-       struct option long_opts[] = {
-               { .val = 'f', .name = "follow", .has_arg = no_argument },
-               { .name = NULL } };
-       char short_opts[] = "f";
-       int rc, follow = 0;
+       struct llapi_resync_comp comp_array[1024] = { { 0 } };
+       struct llapi_layout *layout;
+       struct stat stbuf;
+       uint32_t flr_state;
+       uint64_t start;
+       uint64_t end;
+       int comp_size = 0;
+       int idx;
+       int fd;
+       int rc;
 
-       while ((rc = getopt_long(argc, argv, short_opts,
-               long_opts, NULL)) != -1) {
-                switch (rc) {
-                case 'f':
-                        follow++;
-                        break;
-                case '?':
-                        return CMD_HELP;
-                default:
-                        fprintf(stderr, "error: %s: option '%s' unrecognized\n",
-                                argv[0], argv[optind - 1]);
-                        return CMD_HELP;
-                }
-        }
-        if (optind >= argc)
-                return CMD_HELP;
+       if (stat(fname, &stbuf) < 0) {
+               fprintf(stderr, "%s: cannot stat file '%s': %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto error;
+       }
+       if (!S_ISREG(stbuf.st_mode)) {
+               fprintf(stderr, "%s: '%s' is not a regular file.\n",
+                       progname, fname);
+               rc = -EINVAL;
+               goto error;
+       }
+
+       fd = open(fname, O_DIRECT | O_RDWR);
+       if (fd < 0) {
+               fprintf(stderr, "%s: cannot open '%s': %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto error;
+       }
+
+       layout = llapi_layout_get_by_fd(fd, 0);
+       if (layout == NULL) {
+               fprintf(stderr, "%s: '%s' llapi_layout_get_by_fd failed: %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto close_fd;
+       }
 
-        mdd = argv[optind++];
-        if (argc > optind)
-                startrec = strtoll(argv[optind++], NULL, 10);
-        if (argc > optind)
-                endrec = strtoll(argv[optind++], NULL, 10);
+       rc = llapi_layout_flags_get(layout, &flr_state);
+       if (rc) {
+               fprintf(stderr, "%s: '%s' llapi_layout_flags_get failed: %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto free_layout;
+       }
 
-       rc = llapi_changelog_start(&changelog_priv,
-                                  CHANGELOG_FLAG_BLOCK |
-                                  CHANGELOG_FLAG_JOBID |
-                                  (follow ? CHANGELOG_FLAG_FOLLOW : 0),
-                                  mdd, startrec);
+       flr_state &= LCM_FL_FLR_MASK;
+       if (flr_state == LCM_FL_NONE) {
+               rc = -EINVAL;
+               fprintf(stderr, "%s: '%s' is not a FLR file.\n",
+                       progname, fname);
+               goto free_layout;
+       }
+
+       /* get stale component info */
+       comp_size = llapi_mirror_find_stale(layout, comp_array,
+                                           ARRAY_SIZE(comp_array),
+                                           mirror_ids, ids_nr);
+       if (comp_size <= 0) {
+               rc = comp_size;
+               goto free_layout;
+       }
+
+       ioc->lil_mode = LL_LEASE_WRLCK;
+       ioc->lil_flags = LL_LEASE_RESYNC;
+       rc = llapi_lease_set(fd, ioc);
        if (rc < 0) {
-               fprintf(stderr, "Can't start changelog: %s\n",
-                       strerror(errno = -rc));
-               return rc;
+               if (rc == -EALREADY)
+                       rc = 0;
+               else
+                       fprintf(stderr,
+                           "%s: '%s' llapi_lease_get_ext resync failed: %s.\n",
+                               progname, fname, strerror(errno));
+               goto free_layout;
        }
 
-       while ((rc = llapi_changelog_recv(changelog_priv, &rec)) == 0) {
-               time_t secs;
-               struct tm ts;
+       /* get the read range [start, end) */
+       start = comp_array[0].lrc_start;
+       end = comp_array[0].lrc_end;
+       for (idx = 1; idx < comp_size; idx++) {
+               if (comp_array[idx].lrc_start < start)
+                       start = comp_array[idx].lrc_start;
+               if (end < comp_array[idx].lrc_end)
+                       end = comp_array[idx].lrc_end;
+       }
 
-               if (endrec && rec->cr_index > endrec) {
-                       llapi_changelog_free(&rec);
-                       break;
-               }
-               if (rec->cr_index < startrec) {
-                       llapi_changelog_free(&rec);
-                       continue;
+       rc = llapi_lease_check(fd);
+       if (rc != LL_LEASE_WRLCK) {
+               fprintf(stderr, "%s: '%s' lost lease lock.\n",
+                       progname, fname);
+               goto free_layout;
+       }
+
+       rc = llapi_mirror_resync_many(fd, layout, comp_array, comp_size,
+                                     start, end);
+       if (rc < 0)
+               fprintf(stderr, "%s: '%s' llapi_mirror_resync_many: %d.\n",
+                       progname, fname, rc);
+
+       /* prepare ioc for lease put */
+       ioc->lil_mode = LL_LEASE_UNLCK;
+       ioc->lil_flags = LL_LEASE_RESYNC_DONE;
+       ioc->lil_count = 0;
+       for (idx = 0; idx < comp_size; idx++) {
+               if (comp_array[idx].lrc_synced) {
+                       ioc->lil_ids[ioc->lil_count] = comp_array[idx].lrc_id;
+                       ioc->lil_count++;
                }
+       }
 
-               secs = rec->cr_time >> 30;
-               gmtime_r(&secs, &ts);
-               printf("%ju %02d%-5s %02d:%02d:%02d.%09d %04d.%02d.%02d "
-                      "0x%x t="DFID, (uintmax_t)rec->cr_index, rec->cr_type,
-                      changelog_type2str(rec->cr_type),
-                      ts.tm_hour, ts.tm_min, ts.tm_sec,
-                      (int)(rec->cr_time & ((1 << 30) - 1)),
-                      ts.tm_year + 1900, ts.tm_mon + 1, ts.tm_mday,
-                      rec->cr_flags & CLF_FLAGMASK, PFID(&rec->cr_tfid));
+       rc = llapi_lease_set(fd, ioc);
+       if (rc <= 0) {
+               if (rc == 0) /* lost lease lock */
+                       rc = -EBUSY;
+               fprintf(stderr, "%s: resync file '%s' failed: %s.\n",
+                       progname, fname, strerror(errno));
+               goto free_layout;
+       }
+       /**
+        * llapi_lease_set returns lease mode when it request to unlock
+        * the lease lock
+        */
+       rc = 0;
 
-               if (rec->cr_flags & CLF_JOBID) {
-                       struct changelog_ext_jobid *jid =
-                               changelog_rec_jobid(rec);
+free_layout:
+       llapi_layout_free(layout);
+close_fd:
+       close(fd);
+error:
+       return rc;
+}
 
-                       if (jid->cr_jobid[0] != '\0')
-                               printf(" j=%s", jid->cr_jobid);
+static inline int lfs_mirror_resync(int argc, char **argv)
+{
+       struct ll_ioc_lease *ioc = NULL;
+       __u16 mirror_ids[128] = { 0 };
+       int ids_nr = 0;
+       int c;
+       int rc = 0;
+
+       struct option long_opts[] = {
+       { .val = 'o',   .name = "only",         .has_arg = required_argument },
+       { .name = NULL } };
+
+       while ((c = getopt_long(argc, argv, "o:", long_opts, NULL)) >= 0) {
+               switch (c) {
+               case 'o':
+                       rc = parse_mirror_ids(mirror_ids,
+                                       sizeof(mirror_ids) / sizeof(__u16),
+                                       optarg);
+                       if (rc < 0) {
+                               fprintf(stderr,
+                                       "%s: bad mirror ids '%s'.\n",
+                                       argv[0], optarg);
+                               goto error;
+                       }
+                       ids_nr = rc;
+                       break;
+               default:
+                       fprintf(stderr, "%s: options '%s' unrecognized.\n",
+                               argv[0], argv[optind - 1]);
+                       rc = -EINVAL;
+                       goto error;
                }
+       }
 
-               if (rec->cr_namelen)
-                       printf(" p="DFID" %.*s", PFID(&rec->cr_pfid),
-                              rec->cr_namelen, changelog_rec_name(rec));
+       if (argc == optind) {
+               fprintf(stderr, "%s: no file name given.\n", argv[0]);
+               rc = CMD_HELP;
+               goto error;
+       }
 
-               if (rec->cr_flags & CLF_RENAME) {
-                       struct changelog_ext_rename *rnm =
-                               changelog_rec_rename(rec);
+       if (ids_nr > 0 && argc > optind + 1) {
+               fprintf(stderr,
+                   "%s: option '--only' cannot be used upon multiple files.\n",
+                       argv[0]);
+               rc = CMD_HELP;
+               goto error;
 
-                       if (!fid_is_zero(&rnm->cr_sfid))
-                               printf(" s="DFID" sp="DFID" %.*s",
-                                      PFID(&rnm->cr_sfid),
-                                      PFID(&rnm->cr_spfid),
-                                      (int)changelog_rec_snamelen(rec),
-                                      changelog_rec_sname(rec));
-               }
-               printf("\n");
+       }
 
-               llapi_changelog_free(&rec);
-        }
+       if (ids_nr > 0) {
+               rc = verify_mirror_ids(argv[optind], mirror_ids, ids_nr);
+               if (rc < 0)
+                       goto error;
+       }
+
+       /* set the lease on the file */
+       ioc = calloc(sizeof(*ioc) + sizeof(__u32) * 4096, 1);
+       if (ioc == NULL) {
+               fprintf(stderr, "%s: cannot alloc id array for ioc: %s.\n",
+                       argv[0], strerror(errno));
+               rc = -errno;
+               goto error;
+       }
 
-        llapi_changelog_fini(&changelog_priv);
+       for (; optind < argc; optind++) {
+               rc = lfs_mirror_resync_file(argv[optind], ioc,
+                                           mirror_ids, ids_nr);
+               /* ignore previous file's error, continue with next file */
 
-        if (rc < 0)
-                fprintf(stderr, "Changelog: %s\n", strerror(errno = -rc));
+               /* reset ioc */
+               memset(ioc, 0, sizeof(*ioc) + sizeof(__u32) * 4096);
+       }
 
-        return (rc == 1 ? 0 : rc);
+       free(ioc);
+error:
+       return rc;
 }
 
-static int lfs_changelog_clear(int argc, char **argv)
+static inline int verify_mirror_id_by_fd(int fd, __u16 mirror_id)
 {
-       long long endrec;
+       struct llapi_layout *layout;
        int rc;
 
-       if (argc != 4)
-               return CMD_HELP;
+       layout = llapi_layout_get_by_fd(fd, 0);
+       if (layout == NULL) {
+               fprintf(stderr, "could not get layout.\n");
+               return  -EINVAL;
+       }
 
-       endrec = strtoll(argv[3], NULL, 10);
+       rc = llapi_layout_comp_iterate(layout, find_mirror_id, &mirror_id);
+       if (rc < 0) {
+               fprintf(stderr, "failed to iterate layout\n");
+               llapi_layout_free(layout);
 
-       rc = llapi_changelog_clear(argv[1], argv[2], endrec);
+               return rc;
+       } else if (rc == LLAPI_LAYOUT_ITER_CONT) {
+               fprintf(stderr, "does not find mirror with ID %u\n", mirror_id);
+               llapi_layout_free(layout);
 
-       if (rc == -EINVAL)
-               fprintf(stderr, "%s: record out of range: %llu\n",
-                       argv[0], endrec);
-       else if (rc == -ENOENT)
-               fprintf(stderr, "%s: no changelog user: %s\n",
-                       argv[0], argv[2]);
-       else if (rc)
-               fprintf(stderr, "%s error: %s\n", argv[0],
-                       strerror(-rc));
+               return -EINVAL;
+       }
+       llapi_layout_free(layout);
 
-       if (rc)
-               errno = -rc;
+       return 0;
+}
 
-       return rc;
+/**
+ * Check whether two files are the same file
+ * \retval     0  same file
+ * \retval     1  not the same file
+ * \retval     <0 error code
+ */
+static inline int check_same_file(const char *f1, const char *f2)
+{
+       struct stat stbuf1;
+       struct stat stbuf2;
+
+       if (stat(f1, &stbuf1) < 0) {
+               fprintf(stderr, "%s: cannot stat file '%s': %s\n",
+                       progname, f1, strerror(errno));
+               return -errno;
+       }
+
+       if (stat(f2, &stbuf2) < 0) {
+               fprintf(stderr, "%s: cannot stat file '%s': %s\n",
+                       progname, f2, strerror(errno));
+               return -errno;
+       }
+
+       if (stbuf1.st_rdev == stbuf2.st_rdev &&
+           stbuf1.st_ino == stbuf2.st_ino)
+               return 0;
+
+       return 1;
 }
 
-static int lfs_fid2path(int argc, char **argv)
+static inline int lfs_mirror_read(int argc, char **argv)
 {
+       int rc = CMD_HELP;
+       __u16 mirror_id = 0;
+       const char *outfile = NULL;
+       char *fname;
+       int fd = 0;
+       int outfd;
+       int c;
+       void *buf;
+       const size_t buflen = 4 << 20;
+       off_t pos;
        struct option long_opts[] = {
-               { .val = 'c',   .name = "cur",  .has_arg = no_argument },
-               { .val = 'l',   .name = "link", .has_arg = required_argument },
-               { .val = 'r',   .name = "rec",  .has_arg = required_argument },
-               { .name = NULL } };
-       char  short_opts[] = "cl:r:";
-       char *device, *fid, *path;
-       long long recno = -1;
-       int linkno = -1;
-       int lnktmp;
-       int printcur = 0;
-       int rc = 0;
+       { .val = 'N',   .name = "mirror-id",    .has_arg = required_argument },
+       { .val = 'o',   .name = "outfile",      .has_arg = required_argument },
+       { .name = NULL } };
 
-       while ((rc = getopt_long(argc, argv, short_opts,
-               long_opts, NULL)) != -1) {
-                switch (rc) {
-                case 'c':
-                        printcur++;
-                        break;
-                case 'l':
-                        linkno = strtol(optarg, NULL, 10);
-                        break;
-                case 'r':
-                        recno = strtoll(optarg, NULL, 10);
-                        break;
-                case '?':
-                        return CMD_HELP;
-                default:
-                        fprintf(stderr, "error: %s: option '%s' unrecognized\n",
-                                argv[0], argv[optind - 1]);
-                        return CMD_HELP;
-                }
-        }
+       while ((c = getopt_long(argc, argv, "N:o:", long_opts, NULL)) >= 0) {
+               char *end;
 
-       if (argc < 3)
-               return CMD_HELP;
+               switch (c) {
+               case 'N':
+                       mirror_id = strtoul(optarg, &end, 0);
+                       if (*end != '\0' || mirror_id == 0) {
+                               fprintf(stderr,
+                                       "%s %s: invalid mirror ID '%s'\n",
+                                       progname, argv[0], optarg);
+                               return rc;
+                       }
+                       break;
+               case 'o':
+                       outfile = optarg;
+                       break;
+               default:
+                       fprintf(stderr, "%s: option '%s' unrecognized.\n",
+                               progname, argv[optind - 1]);
+                       return -EINVAL;
+               }
+       }
 
-       device = argv[optind++];
-       path = calloc(1, PATH_MAX);
-       if (path == NULL) {
-               fprintf(stderr, "error: Not enough memory\n");
-               return -errno;
+       if (argc == optind) {
+               fprintf(stderr, "%s %s: no mirrored file provided\n",
+                       progname, argv[0]);
+               return rc;
+       } else if (argc > optind + 1) {
+               fprintf(stderr, "%s %s: too many files\n", progname, argv[0]);
+               return rc;
        }
 
-       rc = 0;
-       while (optind < argc) {
-               fid = argv[optind++];
+       if (mirror_id == 0) {
+               fprintf(stderr, "%s %s: no valid mirror ID is provided\n",
+                       progname, argv[0]);
+               return rc;
+       }
 
-               lnktmp = (linkno >= 0) ? linkno : 0;
-               while (1) {
-                       int oldtmp = lnktmp;
-                       long long rectmp = recno;
-                       int rc2;
-                       rc2 = llapi_fid2path(device, fid, path, PATH_MAX,
-                                            &rectmp, &lnktmp);
-                       if (rc2 < 0) {
-                               fprintf(stderr, "%s: error on FID %s: %s\n",
-                                       argv[0], fid, strerror(errno = -rc2));
-                               if (rc == 0)
-                                       rc = rc2;
-                               break;
-                       }
+       /* open mirror file */
+       fname = argv[optind];
 
-                       if (printcur)
-                               fprintf(stdout, "%lld ", rectmp);
-                       if (device[0] == '/') {
-                               fprintf(stdout, "%s", device);
-                               if (device[strlen(device) - 1] != '/')
-                                       fprintf(stdout, "/");
-                       } else if (path[0] == '\0') {
-                               fprintf(stdout, "/");
+       if (outfile) {
+               rc = check_same_file(fname, outfile);
+               if (rc == 0) {
+                       fprintf(stderr,
+                       "%s %s: output file cannot be the mirrored file\n",
+                               progname, argv[0]);
+                       return -EINVAL;
+               }
+               if (rc < 0)
+                       return rc;
+       }
+
+       fd = open(fname, O_DIRECT | O_RDONLY);
+       if (fd < 0) {
+               fprintf(stderr, "%s %s: cannot open '%s': %s\n",
+                       progname, argv[0], fname, strerror(errno));
+               return rc;
+       }
+
+       /* verify mirror id */
+       rc = verify_mirror_id_by_fd(fd, mirror_id);
+       if (rc) {
+               fprintf(stderr,
+                       "%s %s: cannot find mirror with ID %u in '%s'\n",
+                       progname, argv[0], mirror_id, fname);
+               goto close_fd;
+       }
+
+       /* open output file */
+       if (outfile) {
+               outfd = open(outfile, O_EXCL | O_WRONLY | O_CREAT, 0644);
+               if (outfd < 0) {
+                       fprintf(stderr, "%s %s: cannot create file '%s': %s\n",
+                               progname, argv[0], outfile, strerror(errno));
+                       rc = -errno;
+                       goto close_fd;
+               }
+       } else {
+               outfd = STDOUT_FILENO;
+       }
+
+       /* allocate buffer */
+       rc = posix_memalign(&buf, sysconf(_SC_PAGESIZE), buflen);
+       if (rc) {
+               fprintf(stderr, "%s %s: posix_memalign returns %d\n",
+                               progname, argv[0], rc);
+               goto close_outfd;
+       }
+
+       pos = 0;
+       while (1) {
+               ssize_t bytes_read;
+               ssize_t written = 0;
+
+               bytes_read = llapi_mirror_read(fd, mirror_id, buf, buflen, pos);
+               if (bytes_read < 0) {
+                       rc = bytes_read;
+                       fprintf(stderr,
+                               "%s %s: fail to read data from mirror %u: %s\n",
+                               progname, argv[0], mirror_id, strerror(-rc));
+                       goto free_buf;
+               }
+
+               /* EOF reached */
+               if (bytes_read == 0)
+                       break;
+
+               while (written < bytes_read) {
+                       ssize_t written2;
+
+                       written2 = write(outfd, buf + written,
+                                        bytes_read - written);
+                       if (written2 < 0) {
+                               fprintf(stderr,
+                                       "%s %s: fail to write %s: %s\n",
+                                       progname, argv[0], outfile ? : "STDOUT",
+                                       strerror(errno));
+                               rc = -errno;
+                               goto free_buf;
                        }
-                       fprintf(stdout, "%s\n", path);
+                       written += written2;
+               }
 
-                       if (linkno >= 0)
-                               /* specified linkno */
-                               break;
-                       if (oldtmp == lnktmp)
-                               /* no more links */
-                               break;
+               if (written != bytes_read) {
+                       fprintf(stderr,
+               "%s %s: written %ld bytes does not match with %ld read.\n",
+                               progname, argv[0], written, bytes_read);
+                       rc = -EIO;
+                       goto free_buf;
                }
+
+               pos += bytes_read;
        }
 
-       free(path);
+       fsync(outfd);
+       rc = 0;
+
+free_buf:
+       free(buf);
+close_outfd:
+       if (outfile)
+               close(outfd);
+close_fd:
+       close(fd);
+
        return rc;
 }
 
-static int lfs_path2fid(int argc, char **argv)
+static inline int lfs_mirror_write(int argc, char **argv)
 {
+       int rc = CMD_HELP;
+       __u16 mirror_id = 0;
+       const char *inputfile = NULL;
+       char *fname;
+       int fd = 0;
+       int inputfd;
+       int c;
+       void *buf;
+       const size_t buflen = 4 << 20;
+       off_t pos;
+       size_t page_size = sysconf(_SC_PAGESIZE);
+       struct ll_ioc_lease_id ioc;
+
        struct option long_opts[] = {
-               { .val = 'p', .name = "parents", .has_arg = no_argument },
-               { .name = NULL } };
-       char            **path;
-       const char        short_opts[] = "p";
-       const char       *sep = "";
-       lustre_fid        fid;
-       int               rc = 0;
-       bool              show_parents = false;
+       { .val = 'N',   .name = "mirror-id",    .has_arg = required_argument },
+       { .val = 'i',   .name = "inputfile",    .has_arg = required_argument },
+       { .name = NULL } };
 
-       while ((rc = getopt_long(argc, argv, short_opts,
-                                long_opts, NULL)) != -1) {
-               switch (rc) {
-               case 'p':
-                       show_parents = true;
+       while ((c = getopt_long(argc, argv, "N:i:", long_opts, NULL)) >= 0) {
+               char *end;
+
+               switch (c) {
+               case 'N':
+                       mirror_id = strtoul(optarg, &end, 0);
+                       if (*end != '\0' || mirror_id == 0) {
+                               fprintf(stderr,
+                                       "%s %s: invalid mirror ID '%s'\n",
+                                       progname, argv[0], optarg);
+                               return rc;
+                       }
+                       break;
+               case 'i':
+                       inputfile = optarg;
                        break;
                default:
-                       fprintf(stderr, "error: %s: option '%s' unrecognized\n",
-                               argv[0], argv[optind - 1]);
-                       return CMD_HELP;
+                       fprintf(stderr, "%s: option '%s' unrecognized\n",
+                               progname, argv[optind - 1]);
+                       return -EINVAL;
                }
        }
 
-       if (optind > argc - 1)
-               return CMD_HELP;
-       else if (optind < argc - 1)
-               sep = ": ";
-
-       rc = 0;
-       for (path = argv + optind; *path != NULL; path++) {
-               int err = 0;
-               if (!show_parents) {
-                       err = llapi_path2fid(*path, &fid);
-                       if (!err)
-                               printf("%s%s"DFID"\n",
-                                      *sep != '\0' ? *path : "", sep,
-                                      PFID(&fid));
-               } else {
-                       char            name[NAME_MAX + 1];
-                       unsigned int    linkno = 0;
+       if (argc == optind) {
+               fprintf(stderr, "%s %s: no mirrored file provided\n",
+                       progname, argv[0]);
+               return rc;
+       } else if (argc > optind + 1) {
+               fprintf(stderr, "%s %s: too many files\n", progname, argv[0]);
+               return rc;
+       }
 
-                       while ((err = llapi_path2parent(*path, linkno, &fid,
-                                               name, sizeof(name))) == 0) {
-                               if (*sep != '\0' && linkno == 0)
-                                       printf("%s%s", *path, sep);
+       if (mirror_id == 0) {
+               fprintf(stderr, "%s %s: no valid mirror ID is provided\n",
+                       progname, argv[0]);
+               return rc;
+       }
 
-                               printf("%s"DFID"/%s", linkno != 0 ? "\t" : "",
-                                      PFID(&fid), name);
-                               linkno++;
-                       }
+       /* open mirror file */
+       fname = argv[optind];
 
-                       /* err == -ENODATA is end-of-loop */
-                       if (linkno > 0 && err == -ENODATA) {
-                               printf("\n");
-                               err = 0;
-                       }
+       if (inputfile) {
+               rc = check_same_file(fname, inputfile);
+               if (rc == 0) {
+                       fprintf(stderr,
+                       "%s %s: input file cannot be the mirrored file\n",
+                               progname, argv[0]);
+                       return -EINVAL;
                }
+               if (rc < 0)
+                       return rc;
+       }
 
-               if (err) {
-                       fprintf(stderr, "%s: can't get %sfid for %s: %s\n",
-                               argv[0], show_parents ? "parent " : "", *path,
-                               strerror(-err));
-                       if (rc == 0) {
-                               rc = err;
-                               errno = -err;
-                       }
+       fd = open(fname, O_DIRECT | O_WRONLY);
+       if (fd < 0) {
+               fprintf(stderr, "%s %s: cannot open '%s': %s\n",
+                       progname, argv[0], fname, strerror(errno));
+               return rc;
+       }
+
+       /* verify mirror id */
+       rc = verify_mirror_id_by_fd(fd, mirror_id);
+       if (rc) {
+               fprintf(stderr,
+                       "%s %s: cannot find mirror with ID %u in '%s'\n",
+                       progname, argv[0], mirror_id, fname);
+               goto close_fd;
+       }
+
+       /* open input file */
+       if (inputfile) {
+               inputfd = open(inputfile, O_RDONLY, 0644);
+               if (inputfd < 0) {
+                       fprintf(stderr, "%s %s: cannot open file '%s': %s\n",
+                               progname, argv[0], inputfile, strerror(errno));
+                       rc = -errno;
+                       goto close_fd;
                }
+       } else {
+               inputfd = STDIN_FILENO;
        }
 
-       return rc;
-}
+       /* allocate buffer */
+       rc = posix_memalign(&buf, page_size, buflen);
+       if (rc) {
+               fprintf(stderr, "%s %s: posix_memalign returns %d\n",
+                       progname, argv[0], rc);
+               goto close_inputfd;
+       }
 
-static int lfs_data_version(int argc, char **argv)
-{
-       char *path;
-       __u64 data_version;
-       int fd;
-       int rc;
-       int c;
-       int data_version_flags = LL_DV_RD_FLUSH; /* Read by default */
+       /* prepare target mirror components instantiation */
+       ioc.lil_mode = LL_LEASE_WRLCK;
+       ioc.lil_flags = LL_LEASE_RESYNC;
+       ioc.lil_mirror_id = mirror_id;
+       rc = llapi_lease_set(fd, (struct ll_ioc_lease *)&ioc);
+       if (rc < 0) {
+               fprintf(stderr,
+                       "%s %s: '%s' llapi_lease_get_ext failed: %s\n",
+                       progname, argv[0], fname, strerror(errno));
+               goto free_buf;
+       }
 
-       if (argc < 2)
-               return CMD_HELP;
+       pos = 0;
+       while (1) {
+               ssize_t bytes_read;
+               ssize_t written;
+               size_t to_write;
+
+               rc = llapi_lease_check(fd);
+               if (rc != LL_LEASE_WRLCK) {
+                       fprintf(stderr, "%s %s: '%s' lost lease lock\n",
+                               progname, argv[0], fname);
+                       goto free_buf;
+               }
 
-       while ((c = getopt(argc, argv, "nrw")) != -1) {
-               switch (c) {
-               case 'n':
-                       data_version_flags = 0;
-                       break;
-               case 'r':
-                       data_version_flags |= LL_DV_RD_FLUSH;
-                       break;
-               case 'w':
-                       data_version_flags |= LL_DV_WR_FLUSH;
+               bytes_read = read(inputfd, buf, buflen);
+               if (bytes_read < 0) {
+                       rc = bytes_read;
+                       fprintf(stderr,
+                               "%s %s: fail to read data from '%s': %s\n",
+                               progname, argv[0], inputfile ? : "STDIN",
+                               strerror(errno));
+                       rc = -errno;
+                       goto free_buf;
+               }
+
+               /* EOF reached */
+               if (bytes_read == 0)
                        break;
-               default:
-                       return CMD_HELP;
+
+               /* round up to page align to make direct IO happy. */
+               to_write = (bytes_read + page_size - 1) & ~(page_size - 1);
+
+               written = llapi_mirror_write(fd, mirror_id, buf, to_write,
+                                            pos);
+               if (written < 0) {
+                       rc = written;
+                       fprintf(stderr,
+                             "%s %s: fail to write to mirror %u: %s\n",
+                               progname, argv[0], mirror_id,
+                               strerror(-rc));
+                       goto free_buf;
                }
+
+               pos += bytes_read;
        }
-       if (optind == argc)
-               return CMD_HELP;
 
-       path = argv[optind];
-       fd = open(path, O_RDONLY);
-       if (fd < 0)
-               err(errno, "cannot open file %s", path);
+       if (pos & (page_size - 1)) {
+               rc = llapi_mirror_truncate(fd, mirror_id, pos);
+               if (rc < 0)
+                       goto free_buf;
+       }
 
-       rc = llapi_get_data_version(fd, &data_version, data_version_flags);
-       if (rc < 0)
-               err(errno, "cannot get version for %s", path);
-       else
-               printf("%ju" "\n", (uintmax_t)data_version);
+       ioc.lil_mode = LL_LEASE_UNLCK;
+       ioc.lil_flags = LL_LEASE_RESYNC_DONE;
+       ioc.lil_count = 0;
+       rc = llapi_lease_set(fd, (struct ll_ioc_lease *)&ioc);
+       if (rc <= 0) {
+               if (rc == 0)
+                       rc = -EBUSY;
+               fprintf(stderr,
+                       "%s %s: release lease lock of '%s' failed: %s\n",
+                       progname, argv[0], fname, strerror(errno));
+               goto free_buf;
+       }
+
+       rc = 0;
 
+free_buf:
+       free(buf);
+close_inputfd:
+       if (inputfile)
+               close(inputfd);
+close_fd:
        close(fd);
+
        return rc;
 }
 
-static int lfs_hsm_state(int argc, char **argv)
+struct collect_ids_data {
+       __u16   *cid_ids;
+       int     cid_count;
+       __u16   cid_exclude;
+};
+
+static int collect_mirror_id(struct llapi_layout *layout, void *cbdata)
 {
+       struct collect_ids_data *cid = cbdata;
+       uint32_t id;
        int rc;
-       int i = 1;
-       char *path;
-       struct hsm_user_state hus;
 
-       if (argc < 2)
-               return CMD_HELP;
+       rc = llapi_layout_mirror_id_get(layout, &id);
+       if (rc < 0)
+               return rc;
 
-       do {
-               path = argv[i];
+       if ((__u16)id != cid->cid_exclude) {
+               int i;
 
-               rc = llapi_hsm_state_get(path, &hus);
-               if (rc) {
-                       fprintf(stderr, "can't get hsm state for %s: %s\n",
-                               path, strerror(errno = -rc));
-                       return rc;
+               for (i = 0; i < cid->cid_count; i++) {
+                       /* already collected the mirror id */
+                       if (id == cid->cid_ids[i])
+                               return LLAPI_LAYOUT_ITER_CONT;
                }
+               cid->cid_ids[cid->cid_count] = id;
+               cid->cid_count++;
+       }
 
-               /* Display path name and status flags */
-               printf("%s: (0x%08x)", path, hus.hus_states);
+       return LLAPI_LAYOUT_ITER_CONT;
+}
 
-               if (hus.hus_states & HS_RELEASED)
-                       printf(" released");
-               if (hus.hus_states & HS_EXISTS)
-                       printf(" exists");
-               if (hus.hus_states & HS_DIRTY)
-                       printf(" dirty");
-               if (hus.hus_states & HS_ARCHIVED)
-                       printf(" archived");
-               /* Display user-settable flags */
-               if (hus.hus_states & HS_NORELEASE)
-                       printf(" never_release");
-               if (hus.hus_states & HS_NOARCHIVE)
-                       printf(" never_archive");
-               if (hus.hus_states & HS_LOST)
-                       printf(" lost_from_hsm");
+static inline int get_other_mirror_ids(int fd, __u16 *ids, __u16 exclude_id)
+{
+       struct llapi_layout *layout;
+       struct collect_ids_data cid = { .cid_ids = ids,
+                                       .cid_count = 0,
+                                       .cid_exclude = exclude_id, };
+       int rc;
 
-               if (hus.hus_archive_id != 0)
-                       printf(", archive_id:%d", hus.hus_archive_id);
-               printf("\n");
+       layout = llapi_layout_get_by_fd(fd, 0);
+       if (layout == NULL) {
+               fprintf(stderr, "could not get layout\n");
+               return -EINVAL;
+       }
 
-       } while (++i < argc);
+       rc = llapi_layout_comp_iterate(layout, collect_mirror_id, &cid);
+       if (rc < 0) {
+               fprintf(stderr, "failed to iterate layout\n");
+               llapi_layout_free(layout);
 
-       return 0;
-}
+               return rc;
+       }
+       llapi_layout_free(layout);
 
-#define LFS_HSM_SET   0
-#define LFS_HSM_CLEAR 1
+       return cid.cid_count;
+}
 
-/**
- * Generic function to set or clear HSM flags.
- * Used by hsm_set and hsm_clear.
- *
- * @mode  if LFS_HSM_SET, set the flags, if LFS_HSM_CLEAR, clear the flags.
- */
-static int lfs_hsm_change_flags(int argc, char **argv, int mode)
+static inline int lfs_mirror_copy(int argc, char **argv)
 {
+       int rc = CMD_HELP;
+       __u16 read_mirror_id = 0;
+       __u16 ids[128] = { 0 };
+       int count = 0;
+       struct llapi_layout *layout = NULL;
+       struct llapi_resync_comp comp_array[1024] = { { 0 } };
+       int comp_size = 0;
+       char *fname;
+       int fd = 0;
+       int c;
+       int i;
+       ssize_t copied;
+       struct ll_ioc_lease *ioc = NULL;
+       struct ll_ioc_lease_id *resync_ioc;
+
        struct option long_opts[] = {
-       { .val = 'A',   .name = "archived",     .has_arg = no_argument },
-       { .val = 'a',   .name = "noarchive",    .has_arg = no_argument },
-       { .val = 'd',   .name = "dirty",        .has_arg = no_argument },
-       { .val = 'e',   .name = "exists",       .has_arg = no_argument },
-       { .val = 'l',   .name = "lost",         .has_arg = no_argument },
-       { .val = 'r',   .name = "norelease",    .has_arg = no_argument },
+       { .val = 'i',   .name = "read-mirror",  .has_arg = required_argument },
+       { .val = 'o',   .name = "write-mirror", .has_arg = required_argument },
        { .name = NULL } };
-       char short_opts[] = "lraAde";
-       __u64 mask = 0;
-       int c, rc;
-       char *path;
 
-       if (argc < 3)
-               return CMD_HELP;
+       while ((c = getopt_long(argc, argv, "i:o:", long_opts, NULL)) >= 0) {
+               char *end;
 
-       while ((c = getopt_long(argc, argv, short_opts,
-                               long_opts, NULL)) != -1) {
                switch (c) {
-               case 'l':
-                       mask |= HS_LOST;
-                       break;
-               case 'a':
-                       mask |= HS_NOARCHIVE;
-                       break;
-               case 'A':
-                       mask |= HS_ARCHIVED;
-                       break;
-               case 'r':
-                       mask |= HS_NORELEASE;
-                       break;
-               case 'd':
-                       mask |= HS_DIRTY;
+               case 'i':
+                       read_mirror_id = strtoul(optarg, &end, 0);
+                       if (*end != '\0' || read_mirror_id == 0) {
+                               fprintf(stderr,
+                                       "%s %s: invalid read mirror ID '%s'\n",
+                                       progname, argv[0], optarg);
+                               return rc;
+                       }
                        break;
-               case 'e':
-                       mask |= HS_EXISTS;
+               case 'o':
+                       if (!strcmp(optarg, "-1")) {
+                               /* specify all other mirrors */
+                               ids[0] = (__u16)-1;
+                               count = 1;
+                       } else {
+                               count = parse_mirror_ids((__u16 *)ids,
+                                                        ARRAY_SIZE(ids),
+                                                        optarg);
+                               if (count < 0)
+                                       return rc;
+                       }
                        break;
-               case '?':
-                       return CMD_HELP;
                default:
-                       fprintf(stderr, "error: %s: option '%s' unrecognized\n",
-                               argv[0], argv[optind - 1]);
-                       return CMD_HELP;
+                       fprintf(stderr, "%s: option '%s' unrecognized\n",
+                               progname, argv[optind - 1]);
+                       return -EINVAL;
                }
        }
 
-       /* User should have specified a flag */
-       if (mask == 0)
-               return CMD_HELP;
-
-       while (optind < argc) {
+       if (argc == optind) {
+               fprintf(stderr, "%s %s: no mirrored file provided\n",
+                       progname, argv[0]);
+               return rc;
+       } else if (argc > optind + 1) {
+               fprintf(stderr, "%s %s: too many files\n", progname, argv[0]);
+               return rc;
+       }
 
-               path = argv[optind];
+       if (read_mirror_id == 0) {
+               fprintf(stderr,
+                       "%s %s: no valid read mirror ID %d is provided\n",
+                       progname, argv[0], read_mirror_id);
+               return rc;
+       }
 
-               /* If mode == 0, this means we apply the mask. */
-               if (mode == LFS_HSM_SET)
-                       rc = llapi_hsm_state_set(path, mask, 0, 0);
-               else
-                       rc = llapi_hsm_state_set(path, 0, mask, 0);
+       if (count == 0) {
+               fprintf(stderr,
+                       "%s %s: no write mirror ID is provided\n",
+                       progname, argv[0]);
+               return rc;
+       }
 
-               if (rc != 0) {
-                       fprintf(stderr, "Can't change hsm flags for %s: %s\n",
-                               path, strerror(errno = -rc));
+       for (i = 0; i < count; i++) {
+               if (read_mirror_id == ids[i]) {
+                       fprintf(stderr,
+                       "%s %s: read and write mirror ID cannot be the same\n",
+                               progname, argv[0]);
                        return rc;
                }
-               optind++;
        }
 
-       return 0;
-}
+       /* open mirror file */
+       fname = argv[optind];
 
-static int lfs_hsm_action(int argc, char **argv)
-{
-       int                              rc;
-       int                              i = 1;
-       char                            *path;
-       struct hsm_current_action        hca;
-       struct hsm_extent                he;
-       enum hsm_user_action             hua;
-       enum hsm_progress_states         hps;
+       fd = open(fname, O_DIRECT | O_RDWR);
+       if (fd < 0) {
+               fprintf(stderr, "%s %s: cannot open '%s': %s\n",
+                       progname, argv[0], fname, strerror(errno));
+               return rc;
+       }
 
-       if (argc < 2)
-               return CMD_HELP;
+       /* write to all other mirrors */
+       if (ids[0] == (__u16)-1) {
+               count = get_other_mirror_ids(fd, ids, read_mirror_id);
+               if (count <= 0) {
+                       rc = count;
+                       fprintf(stderr,
+                       "%s %s: failed to get other mirror ids in '%s': %d\n",
+                               progname, argv[0], fname, rc);
+                       goto close_fd;
+               }
+       }
 
-       do {
-               path = argv[i];
+       /* verify mirror id */
+       rc = verify_mirror_id_by_fd(fd, read_mirror_id);
+       if (rc) {
+               fprintf(stderr,
+                       "%s %s: cannot find mirror with ID %u in '%s'\n",
+                       progname, argv[0], read_mirror_id, fname);
+               goto close_fd;
+       }
 
-               rc = llapi_hsm_current_action(path, &hca);
+       for (i = 0; i < count; i++) {
+               rc = verify_mirror_id_by_fd(fd, ids[i]);
                if (rc) {
-                       fprintf(stderr, "can't get hsm action for %s: %s\n",
-                               path, strerror(errno = -rc));
-                       return rc;
+                       fprintf(stderr,
+                       "%s %s: cannot find mirror with ID %u in '%s'\n",
+                               progname, argv[0], ids[i], fname);
+                       goto close_fd;
                }
-               he = hca.hca_location;
-               hua = hca.hca_action;
-               hps = hca.hca_state;
+       }
 
-               printf("%s: %s", path, hsm_user_action2name(hua));
+       ioc = calloc(sizeof(*ioc) + sizeof(__u32) * 4096, 1);
+       if (ioc == NULL) {
+               fprintf(stderr,
+                       "%s %s: cannot alloc comp id array for ioc: %s\n",
+                       progname, argv[0], strerror(errno));
+               rc = -errno;
+               goto close_fd;
+       }
 
-               /* Skip file without action */
-               if (hca.hca_action == HUA_NONE) {
-                       printf("\n");
-                       continue;
-               }
+       /* get stale component info */
+       layout = llapi_layout_get_by_fd(fd, 0);
+       if (layout == NULL) {
+               fprintf(stderr, "%s %s: failed to get layout of '%s': %s\n",
+                       progname, argv[0], fname, strerror(errno));
+               rc = -errno;
+               goto free_ioc;
+       }
+       comp_size = llapi_mirror_find_stale(layout, comp_array,
+                                           ARRAY_SIZE(comp_array),
+                                           ids, count);
+       llapi_layout_free(layout);
+       if (comp_size < 0) {
+               rc = comp_size;
+               goto free_ioc;
+       }
 
-               printf(" %s ", hsm_progress_state2name(hps));
+       /* prepare target mirror components instantiation */
+       resync_ioc = (struct ll_ioc_lease_id *)ioc;
+       resync_ioc->lil_mode = LL_LEASE_WRLCK;
+       resync_ioc->lil_flags = LL_LEASE_RESYNC;
+       if (count == 1)
+               resync_ioc->lil_mirror_id = ids[0];
+       else
+               resync_ioc->lil_mirror_id = read_mirror_id | MIRROR_ID_NEG;
+       rc = llapi_lease_set(fd, ioc);
+       if (rc < 0) {
+               fprintf(stderr,
+                       "%s %s: '%s' llapi_lease_get_ext failed: %s\n",
+                       progname, argv[0], fname, strerror(errno));
+               goto free_ioc;
+       }
 
-               if ((hps == HPS_RUNNING) &&
-                   (hua == HUA_ARCHIVE || hua == HUA_RESTORE))
-                       printf("(%llu bytes moved)\n",
-                              (unsigned long long)he.length);
-               else if ((he.offset + he.length) == LUSTRE_EOF)
-                       printf("(from %llu to EOF)\n",
-                              (unsigned long long)he.offset);
-               else
-                       printf("(from %llu to %llu)\n",
-                              (unsigned long long)he.offset,
-                              (unsigned long long)(he.offset + he.length));
+       copied = llapi_mirror_copy_many(fd, read_mirror_id, ids, count);
+       if (copied < 0) {
+               rc = copied;
+               fprintf(stderr, "%s %s: copy error: %d\n",
+                       progname, argv[0], rc);
+               goto free_ioc;
+       }
 
-       } while (++i < argc);
+       fprintf(stdout, "mirror copied successfully: ");
+       for (i = 0; i < copied; i++)
+               fprintf(stdout, "%d ", ids[i]);
+       fprintf(stdout, "\n");
 
-       return 0;
+       ioc->lil_mode = LL_LEASE_UNLCK;
+       ioc->lil_flags = LL_LEASE_RESYNC_DONE;
+       ioc->lil_count = 0;
+       for (i = 0; i < comp_size; i++) {
+               int j;
+
+               for (j = 0; j < copied; j++) {
+                       if (comp_array[i].lrc_mirror_id != ids[j])
+                               continue;
+
+                       ioc->lil_ids[ioc->lil_count] = comp_array[i].lrc_id;
+                       ioc->lil_count++;
+               }
+       }
+       rc = llapi_lease_set(fd, ioc);
+       if (rc <= 0) {
+               if (rc == 0)
+                       rc = -EBUSY;
+               fprintf(stderr,
+                       "%s %s: release lease lock of '%s' failed: %s\n",
+                       progname, argv[0], fname, strerror(errno));
+               goto free_ioc;
+       }
+
+       rc = 0;
+
+free_ioc:
+       free(ioc);
+close_fd:
+       close(fd);
+
+       return rc;
 }
+/**
+ * struct verify_chunk - Mirror chunk to be verified.
+ * @chunk:        [start, end) of the chunk.
+ * @mirror_count: Number of mirror ids in @mirror_id array.
+ * @mirror_id:    Array of valid mirror ids that cover the chunk.
+ */
+struct verify_chunk {
+       struct lu_extent chunk;
+       unsigned int mirror_count;
+       __u16 mirror_id[LUSTRE_MIRROR_COUNT_MAX];
+};
 
-static int lfs_hsm_set(int argc, char **argv)
+/**
+ * print_chunks() - Print chunk information.
+ * @fname:       Mirrored file name.
+ * @chunks:      Array of chunks.
+ * @chunk_count: Number of chunks in @chunks array.
+ *
+ * This function prints [start, end) of each chunk in @chunks
+ * for mirrored file @fname, and also prints the valid mirror ids
+ * that cover the chunk.
+ *
+ * Return: void.
+ */
+static inline
+void print_chunks(const char *fname, struct verify_chunk *chunks,
+                 int chunk_count)
 {
-       return lfs_hsm_change_flags(argc, argv, LFS_HSM_SET);
+       int i;
+       int j;
+
+       fprintf(stdout, "Chunks to be verified in %s:\n", fname);
+       for (i = 0; i < chunk_count; i++) {
+               fprintf(stdout, DEXT, PEXT(&chunks[i].chunk));
+
+               if (chunks[i].mirror_count == 0)
+                       fprintf(stdout, "\t[");
+               else {
+                       fprintf(stdout, "\t[%u", chunks[i].mirror_id[0]);
+                       for (j = 1; j < chunks[i].mirror_count; j++)
+                               fprintf(stdout, ", %u", chunks[i].mirror_id[j]);
+               }
+               fprintf(stdout, "]\t%u\n", chunks[i].mirror_count);
+       }
+       fprintf(stdout, "\n");
 }
 
-static int lfs_hsm_clear(int argc, char **argv)
+/**
+ * print_checksums() - Print CRC-32 checksum values.
+ * @chunk: A chunk and its corresponding valid mirror ids.
+ * @crc:   CRC-32 checksum values on the chunk for each valid mirror.
+ *
+ * This function prints CRC-32 checksum values on @chunk for
+ * each valid mirror that covers it.
+ *
+ * Return: void.
+ */
+static inline
+void print_checksums(struct verify_chunk *chunk, unsigned long *crc)
 {
-       return lfs_hsm_change_flags(argc, argv, LFS_HSM_CLEAR);
+       int i;
+
+       fprintf(stdout,
+               "CRC-32 checksum value for chunk "DEXT":\n",
+               PEXT(&chunk->chunk));
+       for (i = 0; i < chunk->mirror_count; i++)
+               fprintf(stdout, "Mirror %u:\t%#lx\n",
+                       chunk->mirror_id[i], crc[i]);
+       fprintf(stdout, "\n");
 }
 
 /**
- * Check file state and return its fid, to be used by lfs_hsm_request().
+ * filter_mirror_id() - Filter specified mirror ids.
+ * @chunks:      Array of chunks.
+ * @chunk_count: Number of chunks in @chunks array.
+ * @mirror_ids:  Specified mirror ids to be verified.
+ * @ids_nr:      Number of specified mirror ids.
  *
- * \param[in]     file      Path to file to check
- * \param[in,out] fid       Pointer to allocated lu_fid struct.
- * \param[in,out] last_dev  Pointer to last device id used.
+ * This function scans valid mirror ids that cover each chunk in @chunks
+ * and filters specified mirror ids.
  *
- * \return 0 on success.
+ * Return: void.
  */
-static int lfs_hsm_prepare_file(const char *file, struct lu_fid *fid,
-                               dev_t *last_dev)
+static inline
+void filter_mirror_id(struct verify_chunk *chunks, int chunk_count,
+                     __u16 *mirror_ids, int ids_nr)
 {
-       struct stat     st;
-       int             rc;
+       int i;
+       int j;
+       int k;
+       __u16 valid_id[LUSTRE_MIRROR_COUNT_MAX] = { 0 };
+       unsigned int valid_count = 0;
 
-       rc = lstat(file, &st);
-       if (rc) {
-               fprintf(stderr, "Cannot stat %s: %s\n", file, strerror(errno));
-               return -errno;
-       }
-       /* Checking for regular file as archiving as posix copytool
-        * rejects archiving files other than regular files
-        */
-       if (!S_ISREG(st.st_mode)) {
-               fprintf(stderr, "error: \"%s\" is not a regular file\n", file);
-               return CMD_HELP;
-       }
-       /* A request should be ... */
-       if (*last_dev != st.st_dev && *last_dev != 0) {
-               fprintf(stderr, "All files should be "
-                       "on the same filesystem: %s\n", file);
-               return -EINVAL;
-       }
-       *last_dev = st.st_dev;
+       for (i = 0; i < chunk_count; i++) {
+               if (chunks[i].mirror_count == 0)
+                       continue;
 
-       rc = llapi_path2fid(file, fid);
-       if (rc) {
-               fprintf(stderr, "Cannot read FID of %s: %s\n",
-                       file, strerror(-rc));
-               return rc;
+               valid_count = 0;
+               for (j = 0; j < ids_nr; j++) {
+                       for (k = 0; k < chunks[i].mirror_count; k++) {
+                               if (chunks[i].mirror_id[k] == mirror_ids[j]) {
+                                       valid_id[valid_count] = mirror_ids[j];
+                                       valid_count++;
+                                       break;
+                               }
+                       }
+               }
+
+               memcpy(chunks[i].mirror_id, valid_id,
+                      sizeof(__u16) * valid_count);
+               chunks[i].mirror_count = valid_count;
        }
-       return 0;
 }
 
-/* Fill an HSM HUR item with a given file name.
+/**
+ * lfs_mirror_prepare_chunk() - Find mirror chunks to be verified.
+ * @layout:      Mirror component list.
+ * @chunks:      Array of chunks.
+ * @chunks_size: Array size of @chunks.
  *
- * If mntpath is set, then the filename is actually a FID, and no
- * lookup on the filesystem will be performed.
+ * This function scans the components in @layout from offset 0 to LUSTRE_EOF
+ * to find out chunk segments and store them in @chunks array.
  *
- * \param[in]  hur         the user request to fill
- * \param[in]  idx         index of the item inside the HUR to fill
- * \param[in]  mntpath     mountpoint of Lustre
- * \param[in]  fname       filename (if mtnpath is NULL)
- *                         or FID (if mntpath is set)
- * \param[in]  last_dev    pointer to last device id used
+ * The @mirror_id array in each element of @chunks will store the valid
+ * mirror ids that cover the chunk. If a mirror component covering the
+ * chunk has LCME_FL_STALE or LCME_FL_OFFLINE flag, then the mirror id
+ * will not be stored into the @mirror_id array, and the chunk for that
+ * mirror will not be verified.
  *
- * \retval 0 on success
- * \retval CMD_HELP or a negative errno on error
+ * The @mirror_count in each element of @chunks will store the number of
+ * mirror ids in @mirror_id array. If @mirror_count is 0, it indicates the
+ * chunk is invalid in all of the mirrors. And if @mirror_count is 1, it
+ * indicates the chunk is valid in only one mirror. In both cases, the
+ * chunk will not be verified.
+ *
+ * Here is an example:
+ *
+ *  0      1M     2M     3M     4M           EOF
+ *  +------+-------------+--------------------+
+ *  |      |             |      S             |       mirror1
+ *  +------+------+------+------+-------------+
+ *  |             |   S  |   S  |             |       mirror2
+ *  +-------------+------+------+-------------+
+ *
+ * prepared @chunks array will contain 5 elements:
+ * (([0, 1M), [1, 2], 2),
+ *  ([1M, 2M), [1, 2], 2),
+ *  ([2M, 3M), [1], 1),
+ *  ([3M, 4M], [], 0),
+ *  ([4M, EOF), [2], 1))
+ *
+ * Return: the actual array size of @chunks on success
+ *        or a negative error code on failure.
  */
-static int fill_hur_item(struct hsm_user_request *hur, unsigned int idx,
-                        const char *mntpath, const char *fname,
-                        dev_t *last_dev)
+static inline
+int lfs_mirror_prepare_chunk(struct llapi_layout *layout,
+                            struct verify_chunk *chunks,
+                            size_t chunks_size)
 {
-       struct hsm_user_item *hui = &hur->hur_user_item[idx];
-       int rc;
+       uint64_t start;
+       uint64_t end;
+       uint32_t mirror_id;
+       uint32_t flags;
+       int idx = 0;
+       int i = 0;
+       int rc = 0;
 
-       hui->hui_extent.length = -1;
+       memset(chunks, 0, sizeof(*chunks) * chunks_size);
 
-       if (mntpath != NULL) {
-               if (*fname == '[')
-                       fname++;
-               rc = sscanf(fname, SFID, RFID(&hui->hui_fid));
-               if (rc == 3) {
-                       rc = 0;
-               } else {
-                       fprintf(stderr, "hsm: '%s' is not a valid FID\n",
-                               fname);
-                       rc = -EINVAL;
+       while (1) {
+               rc = llapi_layout_comp_use(layout, LLAPI_LAYOUT_COMP_USE_FIRST);
+               if (rc < 0) {
+                       fprintf(stderr,
+                               "%s: move to the first layout component: %s.\n",
+                               progname, strerror(errno));
+                       goto error;
                }
-       } else {
-               rc = lfs_hsm_prepare_file(fname, &hui->hui_fid, last_dev);
-       }
 
-       if (rc == 0)
-               hur->hur_request.hr_itemcount++;
+               i = 0;
+               rc = 0;
+               chunks[idx].chunk.e_end = LUSTRE_EOF;
+               while (rc == 0) {
+                       rc = llapi_layout_comp_extent_get(layout, &start, &end);
+                       if (rc < 0) {
+                               fprintf(stderr,
+                                       "%s: llapi_layout_comp_extent_get failed: %s.\n",
+                                       progname, strerror(errno));
+                               goto error;
+                       }
 
-       return rc;
-}
+                       if (start > chunks[idx].chunk.e_start ||
+                           end <= chunks[idx].chunk.e_start)
+                               goto next;
 
-static int lfs_hsm_request(int argc, char **argv, int action)
-{
-       struct option long_opts[] = {
-       { .val = 'a',   .name = "archive",      .has_arg = required_argument },
-       { .val = 'D',   .name = "data",         .has_arg = required_argument },
-       { .val = 'l',   .name = "filelist",     .has_arg = required_argument },
-       { .val = 'm',   .name = "mntpath",      .has_arg = required_argument },
-       { .name = NULL } };
-       dev_t                    last_dev = 0;
-       char                     short_opts[] = "l:D:a:m:";
-       struct hsm_user_request *hur, *oldhur;
-       int                      c, i;
-       size_t                   len;
-       int                      nbfile;
-       char                    *line = NULL;
-       char                    *filelist = NULL;
-       char                     fullpath[PATH_MAX];
-       char                    *opaque = NULL;
-       int                      opaque_len = 0;
-       int                      archive_id = 0;
-       FILE                    *fp;
-       int                      nbfile_alloc = 0;
-       char                    *some_file = NULL;
-       char                    *mntpath = NULL;
-       int                      rc;
+                       if (end < chunks[idx].chunk.e_end)
+                               chunks[idx].chunk.e_end = end;
 
-       if (argc < 2)
-               return CMD_HELP;
+                       rc = llapi_layout_comp_flags_get(layout, &flags);
+                       if (rc < 0) {
+                               fprintf(stderr,
+                                       "%s: llapi_layout_comp_flags_get failed: %s.\n",
+                                       progname, strerror(errno));
+                               goto error;
+                       }
+
+                       if (flags & LCME_FL_STALE || flags & LCME_FL_OFFLINE)
+                               goto next;
+
+                       rc = llapi_layout_mirror_id_get(layout, &mirror_id);
+                       if (rc < 0) {
+                               fprintf(stderr,
+                                       "%s: llapi_layout_mirror_id_get failed: %s.\n",
+                                       progname, strerror(errno));
+                               goto error;
+                       }
 
-       while ((c = getopt_long(argc, argv, short_opts,
-                               long_opts, NULL)) != -1) {
-               switch (c) {
-               case 'l':
-                       filelist = optarg;
-                       break;
-               case 'D':
-                       opaque = optarg;
-                       break;
-               case 'a':
-                       if (action != HUA_ARCHIVE &&
-                           action != HUA_REMOVE) {
+                       chunks[idx].mirror_id[i] = mirror_id;
+                       i++;
+                       if (i >= ARRAY_SIZE(chunks[idx].mirror_id)) {
                                fprintf(stderr,
-                                       "error: -a is supported only "
-                                       "when archiving or removing\n");
-                               return CMD_HELP;
+                                       "%s: mirror_id array is too small.\n",
+                                       progname);
+                               rc = -EINVAL;
+                               goto error;
                        }
-                       archive_id = atoi(optarg);
-                       break;
-               case 'm':
-                       if (some_file == NULL) {
-                               mntpath = optarg;
-                               some_file = strdup(optarg);
+
+               next:
+                       rc = llapi_layout_comp_use(layout,
+                                                  LLAPI_LAYOUT_COMP_USE_NEXT);
+                       if (rc < 0) {
+                               fprintf(stderr,
+                                       "%s: move to the next layout component: %s.\n",
+                                       progname, strerror(errno));
+                               goto error;
                        }
+               } /* loop through all components */
+
+               chunks[idx].mirror_count = i;
+
+               if (chunks[idx].chunk.e_end == LUSTRE_EOF)
                        break;
-               case '?':
-                       return CMD_HELP;
-               default:
-                       fprintf(stderr, "error: %s: option '%s' unrecognized\n",
-                               argv[0], argv[optind - 1]);
-                       return CMD_HELP;
+
+               idx++;
+               if (idx >= chunks_size) {
+                       fprintf(stderr, "%s: chunks array is too small.\n",
+                               progname);
+                       rc = -EINVAL;
+                       goto error;
                }
+
+               chunks[idx].chunk.e_start = chunks[idx - 1].chunk.e_end;
        }
 
-       /* All remaining args are files, so we have at least nbfile */
-       nbfile = argc - optind;
+error:
+       return rc < 0 ? rc : idx + 1;
+}
 
-       if ((nbfile == 0) && (filelist == NULL))
-               return CMD_HELP;
+/**
+ * lfs_mirror_verify_chunk() - Verify a chunk.
+ * @fd:        File descriptor of the mirrored file.
+ * @file_size: Size of the mirrored file.
+ * @chunk:     A chunk and its corresponding valid mirror ids.
+ * @verbose:   Verbose mode.
+ *
+ * This function verifies a @chunk contains exactly the same data
+ * ammong the mirrors that cover it.
+ *
+ * If @verbose is specified, then the function will print where the
+ * differences are if the data do not match. Otherwise, it will
+ * just return an error in that case.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+static inline
+int lfs_mirror_verify_chunk(int fd, size_t file_size,
+                           struct verify_chunk *chunk, int verbose)
+{
+       const size_t buflen = 4 * 1024 * 1024; /* 4M */
+       void *buf;
+       size_t page_size = sysconf(_SC_PAGESIZE);
+       ssize_t bytes_read;
+       ssize_t bytes_done;
+       size_t count;
+       off_t pos;
+       unsigned long crc;
+       unsigned long crc_array[LUSTRE_MIRROR_COUNT_MAX] = { 0 };
+       int i;
+       int rc = 0;
 
-       if (opaque != NULL)
-               opaque_len = strlen(opaque);
+       if (file_size == 0)
+               return 0;
 
-       /* Alloc the request structure with enough place to store all files
-        * from command line. */
-       hur = llapi_hsm_user_request_alloc(nbfile, opaque_len);
-       if (hur == NULL) {
-               fprintf(stderr, "Cannot create the request: %s\n",
-                       strerror(errno));
-               return errno;
+       rc = posix_memalign(&buf, page_size, buflen);
+       if (rc) /* error code is returned directly */
+               return -rc;
+
+       if (verbose > 1) {
+               fprintf(stdout, "Verifying chunk "DEXT" on mirror:",
+                       PEXT(&chunk->chunk));
+               for (i = 0; i < chunk->mirror_count; i++)
+                       fprintf(stdout, " %u", chunk->mirror_id[i]);
+               fprintf(stdout, "\n");
        }
-       nbfile_alloc = nbfile;
 
-       hur->hur_request.hr_action = action;
-       hur->hur_request.hr_archive_id = archive_id;
-       hur->hur_request.hr_flags = 0;
+       bytes_done = 0;
+       count = MIN(chunk->chunk.e_end, file_size) - chunk->chunk.e_start;
+       pos = chunk->chunk.e_start;
+       while (bytes_done < count) {
+               /* compute initial CRC-32 checksum */
+               crc = crc32(0L, Z_NULL, 0);
+               memset(crc_array, 0, sizeof(crc_array));
+
+               bytes_read = 0;
+               for (i = 0; i < chunk->mirror_count; i++) {
+                       bytes_read = llapi_mirror_read(fd, chunk->mirror_id[i],
+                                                      buf, buflen, pos);
+                       if (bytes_read < 0) {
+                               rc = bytes_read;
+                               fprintf(stderr,
+                                       "%s: failed to read data from mirror %u: %s.\n",
+                                       progname, chunk->mirror_id[i],
+                                       strerror(-rc));
+                               goto error;
+                       }
 
-       /* All remaining args are files, add them */
-       if (nbfile != 0 && some_file == NULL)
-               some_file = strdup(argv[optind]);
+                       /* compute new CRC-32 checksum */
+                       crc_array[i] = crc32(crc, buf, bytes_read);
+               }
 
-       for (i = 0; i < nbfile; i++) {
-               rc = fill_hur_item(hur, i, mntpath, argv[optind + i],
-                                  &last_dev);
-               if (rc)
-                       goto out_free;
-       }
+               if (verbose)
+                       print_checksums(chunk, crc_array);
 
-       /* from here stop using nb_file, use hur->hur_request.hr_itemcount */
+               /* compare CRC-32 checksum values */
+               for (i = 1; i < chunk->mirror_count; i++) {
+                       if (crc_array[i] != crc_array[0]) {
+                               rc = -EINVAL;
 
-       /* If a filelist was specified, read the filelist from it. */
-       if (filelist != NULL) {
-               fp = fopen(filelist, "r");
-               if (fp == NULL) {
-                       fprintf(stderr, "Cannot read the file list %s: %s\n",
-                               filelist, strerror(errno));
-                       rc = -errno;
-                       goto out_free;
+                               fprintf(stderr,
+                                       "%s: chunk "DEXT" has different checksum value on mirror %u and mirror %u.\n",
+                                       progname, PEXT(&chunk->chunk),
+                                       chunk->mirror_id[0],
+                                       chunk->mirror_id[i]);
+                       }
                }
 
-               while ((rc = getline(&line, &len, fp)) != -1) {
-                       /* If allocated buffer was too small, get something
-                        * larger */
-                       if (nbfile_alloc <= hur->hur_request.hr_itemcount) {
-                               ssize_t size;
+               pos += bytes_read;
+               bytes_done += bytes_read;
+       }
 
-                               nbfile_alloc = nbfile_alloc * 2 + 1;
-                               oldhur = hur;
-                               hur = llapi_hsm_user_request_alloc(nbfile_alloc,
-                                                                  opaque_len);
-                               if (hur == NULL) {
-                                       fprintf(stderr, "hsm: cannot allocate "
-                                               "the request: %s\n",
-                                               strerror(errno));
-                                       hur = oldhur;
-                                       rc = -errno;
-                                       fclose(fp);
-                                       goto out_free;
-                               }
-                               size = hur_len(oldhur);
-                               if (size < 0) {
-                                       fprintf(stderr, "hsm: cannot allocate "
-                                               "%u files + %u bytes data\n",
-                                           oldhur->hur_request.hr_itemcount,
-                                           oldhur->hur_request.hr_data_len);
-                                       free(hur);
-                                       hur = oldhur;
-                                       rc = -E2BIG;
-                                       fclose(fp);
-                                       goto out_free;
-                               }
-                               memcpy(hur, oldhur, size);
-                               free(oldhur);
-                       }
+       if (verbose > 1 && rc == 0) {
+               fprintf(stdout, "Verifying chunk "DEXT" on mirror:",
+                       PEXT(&chunk->chunk));
+               for (i = 0; i < chunk->mirror_count; i++)
+                       fprintf(stdout, " %u", chunk->mirror_id[i]);
+               fprintf(stdout, " PASS\n\n");
+       }
 
-                       /* Chop CR */
-                       if (line[strlen(line) - 1] == '\n')
-                               line[strlen(line) - 1] = '\0';
+error:
+       free(buf);
+       return rc;
+}
 
-                       rc = fill_hur_item(hur, hur->hur_request.hr_itemcount,
-                                          mntpath, line, &last_dev);
-                       if (rc) {
-                               fclose(fp);
-                               goto out_free;
-                       }
+/**
+ * lfs_mirror_verify_file() - Verify a mirrored file.
+ * @fname:      Mirrored file name.
+ * @mirror_ids: Specified mirror ids to be verified.
+ * @ids_nr:     Number of specified mirror ids.
+ * @verbose:    Verbose mode.
+ *
+ * This function verifies that each SYNC mirror of a mirrored file
+ * specified by @fname contains exactly the same data.
+ *
+ * If @mirror_ids is specified, then the function will verify the
+ * mirrors specified by @mirror_ids contain exactly the same data.
+ *
+ * If @verbose is specified, then the function will print where the
+ * differences are if the data do not match. Otherwise, it will
+ * just return an error in that case.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+static inline
+int lfs_mirror_verify_file(const char *fname, __u16 *mirror_ids, int ids_nr,
+                          int verbose)
+{
+       struct verify_chunk chunks_array[1024] = { };
+       struct llapi_layout *layout = NULL;
+       struct stat stbuf;
+       uint32_t flr_state;
+       int fd;
+       int chunk_count = 0;
+       int idx = 0;
+       int rc = 0;
+       int rc1 = 0;
+       int rc2 = 0;
 
-                       if (some_file == NULL) {
-                               some_file = line;
-                               line = NULL;
-                       }
-               }
+       if (stat(fname, &stbuf) < 0) {
+               fprintf(stderr, "%s: cannot stat file '%s': %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto error;
+       }
 
-               rc = fclose(fp);
-               free(line);
+       if (!S_ISREG(stbuf.st_mode)) {
+               fprintf(stderr, "%s: '%s' is not a regular file.\n",
+                       progname, fname);
+               rc = -EINVAL;
+               goto error;
        }
 
-       /* If a --data was used, add it to the request */
-       hur->hur_request.hr_data_len = opaque_len;
-       if (opaque != NULL)
-               memcpy(hur_data(hur), opaque, opaque_len);
+       if (stbuf.st_size == 0) {
+               if (verbose)
+                       fprintf(stdout, "%s: '%s' file size is 0.\n",
+                               progname, fname);
+               rc = 0;
+               goto error;
+       }
 
-       /* Send the HSM request */
-       if (realpath(some_file, fullpath) == NULL) {
-               fprintf(stderr, "Could not find path '%s': %s\n",
-                       some_file, strerror(errno));
+       fd = open(fname, O_DIRECT | O_RDONLY);
+       if (fd < 0) {
+               fprintf(stderr, "%s: cannot open '%s': %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto error;
        }
-       rc = llapi_hsm_request(fullpath, hur);
-       if (rc) {
-               fprintf(stderr, "Cannot send HSM request (use of %s): %s\n",
-                       some_file, strerror(-rc));
-               goto out_free;
+
+       rc = llapi_lease_acquire(fd, LL_LEASE_RDLCK);
+       if (rc < 0) {
+               fprintf(stderr, "%s: '%s' llapi_lease_acquire failed: %s.\n",
+                       progname, fname, strerror(errno));
+               goto close_fd;
        }
 
-out_free:
-       free(some_file);
-       free(hur);
-       return rc;
-}
+       layout = llapi_layout_get_by_fd(fd, 0);
+       if (layout == NULL) {
+               fprintf(stderr, "%s: '%s' llapi_layout_get_by_fd failed: %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               llapi_lease_release(fd);
+               goto close_fd;
+       }
 
-static int lfs_hsm_archive(int argc, char **argv)
-{
-       return lfs_hsm_request(argc, argv, HUA_ARCHIVE);
-}
+       rc = llapi_layout_flags_get(layout, &flr_state);
+       if (rc < 0) {
+               fprintf(stderr, "%s: '%s' llapi_layout_flags_get failed: %s.\n",
+                       progname, fname, strerror(errno));
+               rc = -errno;
+               goto free_layout;
+       }
 
-static int lfs_hsm_restore(int argc, char **argv)
-{
-       return lfs_hsm_request(argc, argv, HUA_RESTORE);
-}
+       flr_state &= LCM_FL_FLR_MASK;
+       switch (flr_state) {
+       case LCM_FL_NONE:
+               rc = -EINVAL;
+               fprintf(stderr, "%s: '%s' file state error: %s.\n",
+                       progname, fname, llapi_layout_flags_string(flr_state));
+               goto free_layout;
+       default:
+               break;
+       }
 
-static int lfs_hsm_release(int argc, char **argv)
-{
-       return lfs_hsm_request(argc, argv, HUA_RELEASE);
-}
+       /* find out mirror chunks to be verified */
+       chunk_count = lfs_mirror_prepare_chunk(layout, chunks_array,
+                                              ARRAY_SIZE(chunks_array));
+       if (chunk_count < 0) {
+               rc = chunk_count;
+               goto free_layout;
+       }
 
-static int lfs_hsm_remove(int argc, char **argv)
-{
-       return lfs_hsm_request(argc, argv, HUA_REMOVE);
-}
+       if (ids_nr > 0)
+               /* filter specified mirror ids */
+               filter_mirror_id(chunks_array, chunk_count, mirror_ids, ids_nr);
+
+       if (verbose > 2)
+               print_chunks(fname, chunks_array, chunk_count);
+
+       for (idx = 0; idx < chunk_count; idx++) {
+               if (chunks_array[idx].chunk.e_start >= stbuf.st_size) {
+                       if (verbose)
+                               fprintf(stdout,
+                                       "%s: '%s' chunk "DEXT" exceeds file size %#llx: skipped\n",
+                                       progname, fname,
+                                       PEXT(&chunks_array[idx].chunk),
+                                       (unsigned long long)stbuf.st_size);
+                       break;
+               }
 
-static int lfs_hsm_cancel(int argc, char **argv)
-{
-       return lfs_hsm_request(argc, argv, HUA_CANCEL);
+               if (chunks_array[idx].mirror_count == 0) {
+                       fprintf(stderr,
+                               "%s: '%s' chunk "DEXT" is invalid in all of the mirrors: ",
+                               progname, fname,
+                               PEXT(&chunks_array[idx].chunk));
+                       if (verbose) {
+                               fprintf(stderr, "skipped\n");
+                               continue;
+                       }
+                       rc = -EINVAL;
+                       fprintf(stderr, "failed\n");
+                       goto free_layout;
+               }
+
+               if (chunks_array[idx].mirror_count == 1) {
+                       if (verbose)
+                               fprintf(stdout,
+                                       "%s: '%s' chunk "DEXT" is only valid in mirror %u: skipped\n",
+                                       progname, fname,
+                                       PEXT(&chunks_array[idx].chunk),
+                                       chunks_array[idx].mirror_id[0]);
+                       continue;
+               }
+
+               rc = llapi_lease_check(fd);
+               if (rc != LL_LEASE_RDLCK) {
+                       fprintf(stderr, "%s: '%s' lost lease lock.\n",
+                               progname, fname);
+                       goto free_layout;
+               }
+
+               /* verify one chunk */
+               rc1 = lfs_mirror_verify_chunk(fd, stbuf.st_size,
+                                             &chunks_array[idx], verbose);
+               if (rc1 < 0) {
+                       rc2 = rc1;
+                       if (!verbose) {
+                               rc = rc1;
+                               goto free_layout;
+                       }
+               }
+       }
+
+       if (rc2 < 0)
+               rc = rc2;
+
+free_layout:
+       llapi_layout_free(layout);
+       llapi_lease_release(fd);
+close_fd:
+       close(fd);
+error:
+       return rc;
 }
 
-static int lfs_swap_layouts(int argc, char **argv)
+/**
+ * lfs_mirror_verify() - Parse and execute lfs mirror verify command.
+ * @argc: The count of lfs mirror verify command line arguments.
+ * @argv: Array of strings for lfs mirror verify command line arguments.
+ *
+ * This function parses lfs mirror verify command and verifies the
+ * specified mirrored file(s).
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+static inline int lfs_mirror_verify(int argc, char **argv)
 {
-       if (argc != 3)
-               return CMD_HELP;
+       __u16 mirror_ids[LUSTRE_MIRROR_COUNT_MAX] = { 0 };
+       int ids_nr = 0;
+       int c;
+       int verbose = 0;
+       int rc = 0;
+       int rc1 = 0;
+       char cmd[PATH_MAX];
 
-       return llapi_swap_layouts(argv[1], argv[2], 0, 0,
-                                 SWAP_LAYOUTS_KEEP_MTIME |
-                                 SWAP_LAYOUTS_KEEP_ATIME);
-}
+       struct option long_opts[] = {
+       { .val = 'o',   .name = "only",         .has_arg = required_argument },
+       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
+       { .name = NULL } };
 
-static const char *const ladvise_names[] = LU_LADVISE_NAMES;
+       snprintf(cmd, sizeof(cmd), "%s %s", progname, argv[0]);
+       progname = cmd;
+       while ((c = getopt_long(argc, argv, "o:v", long_opts, NULL)) >= 0) {
+               switch (c) {
+               case 'o':
+                       rc = parse_mirror_ids(mirror_ids,
+                                             ARRAY_SIZE(mirror_ids),
+                                             optarg);
+                       if (rc < 0) {
+                               fprintf(stderr,
+                                       "%s: bad mirror ids '%s'.\n",
+                                       progname, optarg);
+                               goto error;
+                       }
+                       ids_nr = rc;
+                       if (ids_nr < 2) {
+                               fprintf(stderr,
+                                       "%s: at least 2 mirror ids needed with '--only' option.\n",
+                                       progname);
+                               rc = CMD_HELP;
+                               goto error;
+                       }
+                       break;
+               case 'v':
+                       verbose++;
+                       break;
+               default:
+                       fprintf(stderr, "%s: option '%s' unrecognized.\n",
+                               progname, argv[optind - 1]);
+                       rc = -EINVAL;
+                       goto error;
+               }
+       }
 
-static const char *const lock_mode_names[] = LOCK_MODE_NAMES;
+       if (argc == optind) {
+               fprintf(stderr, "%s: no file name given.\n", progname);
+               rc = CMD_HELP;
+               goto error;
+       }
 
-static const char *const lockahead_results[] = {
-       [LLA_RESULT_SENT] = "Lock request sent",
-       [LLA_RESULT_DIFFERENT] = "Different matching lock found",
-       [LLA_RESULT_SAME] = "Matching lock on identical extent found",
-};
+       if (ids_nr > 0 && argc > optind + 1) {
+               fprintf(stderr,
+                       "%s: '--only' cannot be used upon multiple files.\n",
+                       progname);
+               rc = CMD_HELP;
+               goto error;
 
-int lfs_get_mode(const char *string)
-{
-       enum lock_mode_user mode;
+       }
 
-       for (mode = 0; mode < ARRAY_SIZE(lock_mode_names); mode++) {
-               if (lock_mode_names[mode] == NULL)
-                       continue;
-               if (strcmp(string, lock_mode_names[mode]) == 0)
-                       return mode;
+       if (ids_nr > 0) {
+               rc = verify_mirror_ids(argv[optind], mirror_ids, ids_nr);
+               if (rc < 0)
+                       goto error;
        }
 
-       return -EINVAL;
+       rc = 0;
+       for (; optind < argc; optind++) {
+               rc1 = lfs_mirror_verify_file(argv[optind], mirror_ids, ids_nr,
+                                            verbose);
+               if (rc1 < 0)
+                       rc = rc1;
+       }
+error:
+       return rc;
 }
 
-static enum lu_ladvise_type lfs_get_ladvice(const char *string)
+/**
+ * lfs_mirror() - Parse and execute lfs mirror commands.
+ * @argc: The count of lfs mirror command line arguments.
+ * @argv: Array of strings for lfs mirror command line arguments.
+ *
+ * This function parses lfs mirror commands and performs the
+ * corresponding functions specified in mirror_cmdlist[].
+ *
+ * Return: 0 on success or an error code on failure.
+ */
+static int lfs_mirror(int argc, char **argv)
 {
-       enum lu_ladvise_type advice;
+       char cmd[PATH_MAX];
+       int rc = 0;
 
-       for (advice = 0;
-            advice < ARRAY_SIZE(ladvise_names); advice++) {
-               if (ladvise_names[advice] == NULL)
-                       continue;
-               if (strcmp(string, ladvise_names[advice]) == 0)
-                       return advice;
-       }
+       setlinebuf(stdout);
 
-       return LU_LADVISE_INVALID;
+       Parser_init("lfs-mirror > ", mirror_cmdlist);
+
+       snprintf(cmd, sizeof(cmd), "%s %s", progname, argv[0]);
+       progname = cmd;
+       program_invocation_short_name = cmd;
+       if (argc > 1)
+               rc = Parser_execarg(argc - 1, argv + 1, mirror_cmdlist);
+       else
+               rc = Parser_commands();
+
+       return rc < 0 ? -rc : rc;
 }
 
-static int lfs_ladvise(int argc, char **argv)
+static void lustre_som_swab(struct lustre_som_attrs *attrs)
 {
-       struct option long_opts[] = {
-       { .val = 'a',   .name = "advice",       .has_arg = required_argument },
-       { .val = 'b',   .name = "background",   .has_arg = no_argument },
-       { .val = 'e',   .name = "end",          .has_arg = required_argument },
-       { .val = 'l',   .name = "length",       .has_arg = required_argument },
-       { .val = 'm',   .name = "mode",         .has_arg = required_argument },
-       { .val = 's',   .name = "start",        .has_arg = required_argument },
-       { .val = 'u',   .name = "unset",        .has_arg = no_argument },
-       { .name = NULL } };
-       char                     short_opts[] = "a:be:l:m:s:u";
-       int                      c;
-       int                      rc = 0;
-       const char              *path;
-       int                      fd;
-       struct llapi_lu_ladvise  advice;
-       enum lu_ladvise_type     advice_type = LU_LADVISE_INVALID;
-       unsigned long long       start = 0;
-       unsigned long long       end = LUSTRE_EOF;
-       unsigned long long       length = 0;
-       unsigned long long       size_units;
-       unsigned long long       flags = 0;
-       int                      mode = 0;
+#if __BYTE_ORDER == __BIG_ENDIAN
+       __swab16s(&attrs->lsa_valid);
+       __swab64s(&attrs->lsa_size);
+       __swab64s(&attrs->lsa_blocks);
+#endif
+}
 
-       optind = 0;
-       while ((c = getopt_long(argc, argv, short_opts,
-                               long_opts, NULL)) != -1) {
-               switch (c) {
-               case 'a':
-                       advice_type = lfs_get_ladvice(optarg);
-                       if (advice_type == LU_LADVISE_INVALID) {
-                               fprintf(stderr, "%s: invalid advice type "
-                                       "'%s'\n", argv[0], optarg);
-                               fprintf(stderr, "Valid types:");
+enum lfs_som_type {
+       LFS_SOM_SIZE = 0x1,
+       LFS_SOM_BLOCKS = 0x2,
+       LFS_SOM_FLAGS = 0x4,
+       LFS_SOM_ATTR_ALL = LFS_SOM_SIZE | LFS_SOM_BLOCKS |
+                          LFS_SOM_FLAGS,
+};
 
-                               for (advice_type = 0;
-                                    advice_type < ARRAY_SIZE(ladvise_names);
-                                    advice_type++) {
-                                       if (ladvise_names[advice_type] == NULL)
-                                               continue;
-                                       fprintf(stderr, " %s",
-                                               ladvise_names[advice_type]);
-                               }
-                               fprintf(stderr, "\n");
+static int lfs_getsom(int argc, char **argv)
+{
+       const char *path;
+       struct lustre_som_attrs *attrs;
+       char buf[sizeof(*attrs) + 64];
+       enum lfs_som_type type = LFS_SOM_ATTR_ALL;
+       int rc = 0, c;
 
-                               return CMD_HELP;
-                       }
-                       break;
-               case 'b':
-                       flags |= LF_ASYNC;
-                       break;
-               case 'u':
-                       flags |= LF_UNSET;
-                       break;
-               case 'e':
-                       size_units = 1;
-                       rc = llapi_parse_size(optarg, &end,
-                                             &size_units, 0);
-                       if (rc) {
-                               fprintf(stderr, "%s: bad end offset '%s'\n",
-                                       argv[0], optarg);
-                               return CMD_HELP;
-                       }
-                       break;
+       while ((c = getopt(argc, argv, "sbf")) != -1) {
+               switch (c) {
                case 's':
-                       size_units = 1;
-                       rc = llapi_parse_size(optarg, &start,
-                                             &size_units, 0);
-                       if (rc) {
-                               fprintf(stderr, "%s: bad start offset "
-                                       "'%s'\n", argv[0], optarg);
-                               return CMD_HELP;
-                       }
+                       type = LFS_SOM_SIZE;
                        break;
-               case 'l':
-                       size_units = 1;
-                       rc = llapi_parse_size(optarg, &length,
-                                             &size_units, 0);
-                       if (rc) {
-                               fprintf(stderr, "%s: bad length '%s'\n",
-                                       argv[0], optarg);
-                               return CMD_HELP;
-                       }
+               case 'b':
+                       type = LFS_SOM_BLOCKS;
                        break;
-               case 'm':
-                       mode = lfs_get_mode(optarg);
-                       if (mode < 0) {
-                               fprintf(stderr, "%s: bad mode '%s', valid "
-                                                "modes are READ or WRITE\n",
-                                       argv[0], optarg);
-                               return CMD_HELP;
-                       }
+               case 'f':
+                       type = LFS_SOM_FLAGS;
                        break;
-               case '?':
-                       return CMD_HELP;
                default:
-                       fprintf(stderr, "%s: option '%s' unrecognized\n",
-                               argv[0], argv[optind - 1]);
+                       fprintf(stderr, "%s: invalid option '%c'\n",
+                               progname, optopt);
                        return CMD_HELP;
                }
        }
 
-       if (advice_type == LU_LADVISE_INVALID) {
-               fprintf(stderr, "%s: please give an advice type\n", argv[0]);
-               fprintf(stderr, "Valid types:");
-               for (advice_type = 0; advice_type < ARRAY_SIZE(ladvise_names);
-                    advice_type++) {
-                       if (ladvise_names[advice_type] == NULL)
-                               continue;
-                       fprintf(stderr, " %s", ladvise_names[advice_type]);
-               }
-               fprintf(stderr, "\n");
-               return CMD_HELP;
-       }
-
-       if (advice_type == LU_LADVISE_LOCKNOEXPAND) {
-               fprintf(stderr, "%s: Lock no expand advice is a per file "
-                                "descriptor advice, so when called from lfs, "
-                                "it does nothing.\n", argv[0]);
-               return CMD_HELP;
-       }
-
-       if (argc <= optind) {
-               fprintf(stderr, "%s: please give one or more file names\n",
-                       argv[0]);
-               return CMD_HELP;
-       }
+       argc -= optind;
+       argv += optind;
 
-       if (end != LUSTRE_EOF && length != 0 && end != start + length) {
-               fprintf(stderr, "%s: conflicting arguments of -l and -e\n",
-                       argv[0]);
+       if (argc != 1) {
+               fprintf(stderr, "%s: %s\n",
+                       progname, argc == 0 ? "miss file target" :
+                       "input more than 2 files");
                return CMD_HELP;
        }
 
-       if (end == LUSTRE_EOF && length != 0)
-               end = start + length;
-
-       if (end <= start) {
-               fprintf(stderr, "%s: range [%llu, %llu] is invalid\n",
-                       argv[0], start, end);
-               return CMD_HELP;
+       path = argv[0];
+       attrs = (void *)buf;
+       rc = lgetxattr(path, "trusted.som", attrs, sizeof(buf));
+       if (rc < 0) {
+               rc = -errno;
+               fprintf(stderr, "%s failed to get som xattr: %s (%d)\n",
+                       argv[0], strerror(errno), errno);
+               return rc;
        }
 
-       if (advice_type != LU_LADVISE_LOCKAHEAD && mode != 0) {
-               fprintf(stderr, "%s: mode is only valid with lockahead\n",
-                       argv[0]);
-               return CMD_HELP;
-       }
+       lustre_som_swab(attrs);
 
-       if (advice_type == LU_LADVISE_LOCKAHEAD && mode == 0) {
-               fprintf(stderr, "%s: mode is required with lockahead\n",
-                       argv[0]);
+       switch (type) {
+       case LFS_SOM_ATTR_ALL:
+               printf("file: %s size: %llu blocks: %llu flags: %x\n",
+                      path, attrs->lsa_size, attrs->lsa_blocks,
+                      attrs->lsa_valid);
+               break;
+       case LFS_SOM_SIZE:
+               printf("%llu\n", attrs->lsa_size);
+               break;
+       case LFS_SOM_BLOCKS:
+               printf("%llu\n", attrs->lsa_blocks);
+               break;
+       case LFS_SOM_FLAGS:
+               printf("%x\n", attrs->lsa_valid);
+               break;
+       default:
+               fprintf(stderr, "%s: unknown option\n", progname);
                return CMD_HELP;
        }
 
-       while (optind < argc) {
-               int rc2;
-
-               path = argv[optind++];
-
-               fd = open(path, O_RDONLY);
-               if (fd < 0) {
-                       fprintf(stderr, "%s: cannot open file '%s': %s\n",
-                               argv[0], path, strerror(errno));
-                       rc2 = -errno;
-                       goto next;
-               }
-
-               advice.lla_start = start;
-               advice.lla_end = end;
-               advice.lla_advice = advice_type;
-               advice.lla_value1 = 0;
-               advice.lla_value2 = 0;
-               advice.lla_value3 = 0;
-               advice.lla_value4 = 0;
-               if (advice_type == LU_LADVISE_LOCKAHEAD) {
-                       advice.lla_lockahead_mode = mode;
-                       advice.lla_peradvice_flags = flags;
-               }
+       return 0;
+}
 
-               rc2 = llapi_ladvise(fd, flags, 1, &advice);
-               close(fd);
-               if (rc2 < 0) {
-                       fprintf(stderr, "%s: cannot give advice '%s' to file "
-                               "'%s': %s\n", argv[0],
-                               ladvise_names[advice_type],
-                               path, strerror(errno));
+/**
+ * lfs_mirror_list_commands() - List lfs mirror commands.
+ * @argc: The count of command line arguments.
+ * @argv: Array of strings for command line arguments.
+ *
+ * This function lists lfs mirror commands defined in mirror_cmdlist[].
+ *
+ * Return: 0 on success.
+ */
+static int lfs_mirror_list_commands(int argc, char **argv)
+{
+       char buffer[81] = "";
 
-                       goto next;
-               }
+       Parser_list_commands(mirror_cmdlist, buffer, sizeof(buffer),
+                            NULL, 0, 4);
 
-next:
-               if (rc == 0 && rc2 < 0)
-                       rc = rc2;
-       }
-       return rc;
+       return 0;
 }
 
 static int lfs_list_commands(int argc, char **argv)
@@ -5540,24 +9970,27 @@ static int lfs_list_commands(int argc, char **argv)
 
 int main(int argc, char **argv)
 {
-        int rc;
+       int rc;
 
        /* Ensure that liblustreapi constructor has run */
-       if (!liblustreapi_initialized)
+       if (!llapi_liblustreapi_initialized())
                fprintf(stderr, "liblustreapi was not properly initialized\n");
 
-        setlinebuf(stdout);
+       setlinebuf(stdout);
+       opterr = 0;
 
        Parser_init("lfs > ", cmdlist);
 
-       progname = argv[0]; /* Used in error messages */
-        if (argc > 1) {
-                rc = Parser_execarg(argc - 1, argv + 1, cmdlist);
-        } else {
-                rc = Parser_commands();
-        }
+       progname = program_invocation_short_name; /* Used in error messages */
+       if (argc > 1) {
+               llapi_set_command_name(argv[1]);
+               rc = Parser_execarg(argc - 1, argv + 1, cmdlist);
+               llapi_clear_command_name();
+       } else {
+               rc = Parser_commands();
+       }
 
-        return rc < 0 ? -rc : rc;
+       return rc < 0 ? -rc : rc;
 }
 
 #ifdef _LUSTRE_IDL_H_