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LU-930 utils: fix --verbose option for lfs-migrate.1
[fs/lustre-release.git] / lustre / utils / lfs.c
index ed49265..089284d 100644 (file)
@@ -124,10 +124,13 @@ 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);
 
 enum setstripe_origin {
        SO_SETSTRIPE,
        SO_MIGRATE,
+       SO_MIGRATE_MDT,
        SO_MIRROR_CREATE,
        SO_MIRROR_EXTEND,
        SO_MIRROR_SPLIT,
@@ -231,20 +234,20 @@ static inline int lfs_mirror_split(int argc, char **argv)
 
 #define MIGRATE_USAGE                                                  \
        SSM_CMD_COMMON("migrate  ")                                     \
-       "                 [--block|-b]\n"                               \
-       "                 [--non-block|-n]\n"                           \
-       "                 [--non-direct|-D]\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" \
-       "\tnon-direct:   Do not use direct I/O to copy file contents\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-index|-i mdt_index]\n"           \
-       "               [--mdt-hash|-H mdt_hash]\n"             \
+#define SETDIRSTRIPE_USAGE                                             \
+       "               [--mdt-count|-c stripe_count>\n"                \
+       "               [--mdt-index|-i mdt_index[,mdt_index,...]\n"    \
+       "               [--mdt-hash|-H mdt_hash]\n"                     \
        "               [--default|-D] [--mode|-m mode] <dir>\n"        \
        "\tstripe_count: stripe count of the striped directory\n"       \
        "\tmdt_index: MDT index of first stripe\n"                      \
@@ -282,6 +285,14 @@ command_t mirror_cmdlist[] = {
        "\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 = "resync", .pc_func = lfs_mirror_resync,
          .pc_help = "Resynchronizes out-of-sync mirrored file(s).\n"
                "usage: lfs mirror resync [--only <mirror_id[,...]>] "
@@ -291,7 +302,7 @@ command_t mirror_cmdlist[] = {
                "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_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" },
@@ -397,9 +408,9 @@ command_t cmdlist[] = {
         "\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 "
@@ -530,9 +541,17 @@ command_t cmdlist[] = {
         "usage: swap_layouts <path1> <path2>"},
        {"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|-m] <start_mdt_index>\n"
+        "               [--mdt-count|-c] <stripe_count>\n"
+        "               [--mdt-hash|-H] <hash_type>\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"
@@ -572,6 +591,8 @@ command_t cmdlist[] = {
         "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 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"
@@ -604,9 +625,10 @@ static int check_hashtype(const char *hashtype)
 static const char *error_loc = "syserror";
 
 enum {
-       MIGRATION_NONBLOCK      = 1 << 0,
-       MIGRATION_MIRROR        = 1 << 1,
-       MIGRATION_NONDIRECT     = 1 << 2,
+       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,
@@ -1108,6 +1130,9 @@ out:
        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);
+
        return rc;
 }
 
@@ -2240,59 +2265,64 @@ static int build_layout_from_yaml_node(struct cYAML *node,
        int rc = 0;
 
        while (node) {
-               string = node->cy_string;
-               /* skip leading lmm_ if present, to simplify parsing */
-               if (string != NULL && 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 (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++;
-                       }
-               } else if (node->cy_type == CYAML_TYPE_OBJECT) {
+               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)
                                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 (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;
        }
@@ -2532,12 +2562,12 @@ static int lfs_setstripe_internal(int argc, char **argv,
        char                            *end;
        int                              c;
        int                              delete = 0;
-       char                            *mdt_idx_arg = NULL;
        unsigned long long               size_units = 1;
        bool                             migrate_mode = false;
+       bool                             migrate_mdt_mode = false;
        bool                             migration_block = false;
        __u64                            migration_flags = 0;
-       __u32                            osts[LOV_MAX_STRIPE_COUNT] = { 0 };
+       __u32                            tgts[LOV_MAX_STRIPE_COUNT] = { 0 };
        int                              comp_del = 0, comp_set = 0;
        int                              comp_add = 0;
        __u32                            comp_id = 0;
@@ -2557,6 +2587,7 @@ static int lfs_setstripe_internal(int argc, char **argv,
        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 },
@@ -2588,6 +2619,7 @@ static int lfs_setstripe_internal(int argc, char **argv,
                        .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},
@@ -2600,7 +2632,8 @@ static int lfs_setstripe_internal(int argc, char **argv,
 /* 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 }*/
-/* dirstripe { .val = 'H', .name = "mdt-hash",  .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},
@@ -2640,8 +2673,9 @@ static int lfs_setstripe_internal(int argc, char **argv,
 
        snprintf(cmd, sizeof(cmd), "%s %s", progname, argv[0]);
        progname = cmd;
-       while ((c = getopt_long(argc, argv, "bc:dDE:f:i:I:m:N::no:p:L:s:S:vy:",
-                               long_opts, NULL)) >= 0) {
+       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. */
@@ -2790,6 +2824,20 @@ static int lfs_setstripe_internal(int argc, char **argv,
                                }
                        }
                        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') {
@@ -2862,11 +2910,24 @@ static int lfs_setstripe_internal(int argc, char **argv,
                case 'm':
                        if (!migrate_mode) {
                                fprintf(stderr,
-                                       "%s %s: -m|--mdt-index valid only for migrate command\n",
+                                       "%s %s: -m|--mdt is valid only for migrate command\n",
                                        progname, argv[0]);
                                goto usage_error;
                        }
-                       mdt_idx_arg = optarg;
+                       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) {
@@ -2925,8 +2986,8 @@ static int lfs_setstripe_internal(int argc, char **argv,
                                fprintf(stderr, "warning: '--ost-list' is "
                                        "deprecated, use '--ost' instead\n");
 #endif
-                       lsa.lsa_nr_tgts = parse_targets(osts,
-                                               sizeof(osts) / sizeof(__u32),
+                       lsa.lsa_nr_tgts = parse_targets(tgts,
+                                               sizeof(tgts) / sizeof(__u32),
                                                lsa.lsa_nr_tgts, optarg);
                        if (lsa.lsa_nr_tgts < 0) {
                                fprintf(stderr,
@@ -2935,9 +2996,9 @@ static int lfs_setstripe_internal(int argc, char **argv,
                                goto usage_error;
                        }
 
-                       lsa.lsa_tgts = osts;
+                       lsa.lsa_tgts = tgts;
                        if (lsa.lsa_stripe_off == LLAPI_LAYOUT_DEFAULT)
-                               lsa.lsa_stripe_off = osts[0];
+                               lsa.lsa_stripe_off = tgts[0];
                        break;
                case 'p':
                        if (optarg == NULL)
@@ -2967,6 +3028,7 @@ static int lfs_setstripe_internal(int argc, char **argv,
                                goto usage_error;
                        }
                        migrate_mdt_param.fp_verbose = VERBOSE_DETAIL;
+                       migration_flags = MIGRATION_VERBOSE;
                        break;
                case 'y':
                        from_yaml = true;
@@ -3110,13 +3172,6 @@ static int lfs_setstripe_internal(int argc, char **argv,
                goto error;
        }
 
-       if (mdt_idx_arg != NULL && optind > 3) {
-               fprintf(stderr,
-                       "%s %s: option -m cannot be used with other options\n",
-                       progname, argv[0]);
-               goto usage_error;
-       }
-
        if ((migration_flags & MIGRATION_NONBLOCK) && migration_block) {
                fprintf(stderr,
                        "%s %s: options --non-block and --block are mutually exclusive\n",
@@ -3132,14 +3187,59 @@ static int lfs_setstripe_internal(int argc, char **argv,
                goto usage_error;
        }
 
-       if (mdt_idx_arg != NULL) {
+       if (migrate_mdt_mode) {
+               struct lmv_user_md *lmu;
+
                /* initialize migrate mdt parameters */
-               migrate_mdt_param.fp_mdt_index = strtoul(mdt_idx_arg, &end, 0);
-               if (*end != '\0') {
-                       fprintf(stderr, "%s %s: invalid MDT index '%s'\n",
-                               progname, argv[0], mdt_idx_arg);
+               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 */
@@ -3182,15 +3282,15 @@ static int lfs_setstripe_internal(int argc, char **argv,
 
                        param->lsp_is_specific = true;
                        param->lsp_stripe_count = lsa.lsa_nr_tgts;
-                       memcpy(param->lsp_osts, osts,
-                              sizeof(*osts) * 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, osts);
+                                                  &lsa, tgts);
                if (result) {
                        fprintf(stderr, "error: %s: can't create composite "
                                "layout from template file %s\n",
@@ -3208,7 +3308,7 @@ static int lfs_setstripe_internal(int argc, char **argv,
        }
 
        for (fname = argv[optind]; fname != NULL; fname = argv[++optind]) {
-               if (mdt_idx_arg != NULL) {
+               if (migrate_mdt_mode) {
                        result = llapi_migrate_mdt(fname, &migrate_mdt_param);
                } else if (migrate_mode) {
                        result = lfs_migrate(fname, migration_flags, param,
@@ -3267,6 +3367,7 @@ static int lfs_setstripe_internal(int argc, char **argv,
        }
 
        free(param);
+       free(migrate_mdt_param.fp_lmv_md);
        llapi_layout_free(layout);
        lfs_mirror_list_free(mirror_list);
        return result2;
@@ -4038,6 +4139,7 @@ static int lfs_getstripe_internal(int argc, char **argv,
        { .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 },
@@ -4061,7 +4163,7 @@ static int lfs_getstripe_internal(int argc, char **argv,
        char *end, *tmp;
 
        while ((c = getopt_long(argc, argv,
-                       "-cdDE::FghiI::LmMoO:pqrRsSvy",
+                       "-cdDE::FghiI::LmMNoO:pqrRsSvy",
                        long_opts, NULL)) != -1) {
                if (neg_opt)
                        --neg_opt;
@@ -4242,7 +4344,7 @@ static int lfs_getstripe_internal(int argc, char **argv,
                        break;
                case 'i':
                        if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_OFFSET;
+                               param->fp_verbose |= VERBOSE_STRIPE_OFFSET;
                                param->fp_max_depth = 0;
                        }
                        break;
@@ -4265,7 +4367,7 @@ static int lfs_getstripe_internal(int argc, char **argv,
                        break;
                case 'L':
                        if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_LAYOUT;
+                               param->fp_verbose |= VERBOSE_PATTERN;
                                param->fp_max_depth = 0;
                        }
                        break;
@@ -4279,6 +4381,12 @@ static int lfs_getstripe_internal(int argc, char **argv,
                                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,
@@ -4305,7 +4413,7 @@ static int lfs_getstripe_internal(int argc, char **argv,
                        break;
                case 'S':
                        if (!(param->fp_verbose & VERBOSE_DETAIL)) {
-                               param->fp_verbose |= VERBOSE_SIZE;
+                               param->fp_verbose |= VERBOSE_STRIPE_SIZE;
                                param->fp_max_depth = 0;
                        }
                        break;
@@ -4430,7 +4538,7 @@ static int lfs_getdirstripe(int argc, char **argv)
                        break;
                case 'i':
                case 'm':
-                       param.fp_verbose |= VERBOSE_OFFSET;
+                       param.fp_verbose |= VERBOSE_STRIPE_OFFSET;
                        break;
 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
                case 't':
@@ -4503,16 +4611,22 @@ enum mntdf_flags {
 #define RSF     "%4s"
 #define RDF     "%3d%%"
 
-static inline int obd_statfs_ratio(const struct obd_statfs *st)
+static inline int obd_statfs_ratio(const struct obd_statfs *st, bool inodes)
 {
        double avail, used, ratio = 0;
 
-       avail = st->os_bavail;
-       used  = st->os_blocks - st->os_bfree;
+       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 + 0.5;
+               ratio = used / (used + avail) * 100;
 
-       return (int)ratio;
+       /* 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,
@@ -4546,7 +4660,7 @@ static int showdf(char *mntdir, struct obd_statfs *stat,
                        total = (stat->os_blocks * stat->os_bsize) >> shift;
                }
 
-               ratio = obd_statfs_ratio(stat);
+               ratio = obd_statfs_ratio(stat, flags & MNTDF_INODES);
 
                if (flags & MNTDF_COOKED) {
                        int i;
@@ -4687,6 +4801,8 @@ static int mntdf(char *mntdir, char *fsname, char *pool, enum mntdf_flags flags,
        }
 
        for (tp = types; tp->st_name != NULL; tp++) {
+               bool have_ost = false;
+
                if (!(tp->st_op & ops))
                        continue;
 
@@ -4708,6 +4824,20 @@ static int mntdf(char *mntdir, char *fsname, char *pool, enum mntdf_flags flags,
                                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)
@@ -4731,20 +4861,21 @@ static int mntdf(char *mntdir, char *fsname, char *pool, enum mntdf_flags flags,
                                       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 (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;
                }
        }
 
@@ -4773,8 +4904,8 @@ static int ll_statfs_data_comp(const void *sd1, const void *sd2)
                                                sd_st;
        const struct obd_statfs *st2 = &((const struct ll_statfs_data *)sd2)->
                                                sd_st;
-       int r1 = obd_statfs_ratio(st1);
-       int r2 = obd_statfs_ratio(st2);
+       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 */
@@ -5054,8 +5185,8 @@ static int lfs_setdirstripe(int argc, char **argv)
 
                                /* don't use server whose usage is above 90% */
                                while (nr != param->lsp_stripe_count &&
-                                      obd_statfs_ratio(&lsb->sb_buf[nr].sd_st)
-                                      > 90)
+                                      obd_statfs_ratio(&lsb->sb_buf[nr].sd_st,
+                                                       false) > 90)
                                        nr = MAX(param->lsp_stripe_count,
                                                 nr / 2);
 
@@ -5123,13 +5254,14 @@ static int lfs_rmentry(int argc, char **argv)
 
 static int lfs_mv(int argc, char **argv)
 {
-       struct  find_param param = {
+       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;
+       char *end;
+       int c;
+       int rc = 0;
        struct option long_opts[] = {
        { .val = 'm',   .name = "mdt-index",    .has_arg = required_argument },
        { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
@@ -5143,7 +5275,7 @@ static int lfs_mv(int argc, char **argv)
                                ", use '--mdt-index' or '-m' instead\n");
 #endif
                case 'm':
-                       param.fp_mdt_index = strtoul(optarg, &end, 0);
+                       lmu.lum_stripe_offset = strtoul(optarg, &end, 0);
                        if (*end != '\0') {
                                fprintf(stderr, "%s mv: bad MDT index '%s'\n",
                                        progname, optarg);
@@ -5160,7 +5292,7 @@ static int lfs_mv(int argc, char **argv)
                }
        }
 
-       if (param.fp_mdt_index == -1) {
+       if (lmu.lum_stripe_offset == -1) {
                fprintf(stderr, "%s mv: MDT index must be specified\n",
                        progname);
                return CMD_HELP;
@@ -5171,6 +5303,9 @@ static int lfs_mv(int argc, char **argv)
                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)
@@ -5290,12 +5425,13 @@ static int lfs_getname(int argc, char **argv)
 
 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];
+       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",
@@ -5303,17 +5439,23 @@ static int lfs_check(int argc, char **argv)
                return CMD_HELP;
        }
 
-        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");
+       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]);
@@ -8170,7 +8312,7 @@ static inline int lfs_mirror_resync(int argc, char **argv)
                /* ignore previous file's error, continue with next file */
 
                /* reset ioc */
-               memset(ioc, 0, sizeof(__u32) * 4096);
+               memset(ioc, 0, sizeof(*ioc) + sizeof(__u32) * 4096);
        }
 
        free(ioc);
@@ -8178,6 +8320,429 @@ error:
        return rc;
 }
 
+static inline int verify_mirror_id_by_fd(int fd, __u16 mirror_id)
+{
+       struct llapi_layout *layout;
+       int rc;
+
+       layout = llapi_layout_get_by_fd(fd, 0);
+       if (layout == NULL) {
+               fprintf(stderr, "could not get layout.\n");
+               return  -EINVAL;
+       }
+
+       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);
+
+               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);
+
+               return -EINVAL;
+       }
+       llapi_layout_free(layout);
+
+       return 0;
+}
+
+/**
+ * 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 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 = 'N',   .name = "mirror-id",    .has_arg = required_argument },
+       { .val = 'o',   .name = "outfile",      .has_arg = required_argument },
+       { .name = NULL } };
+
+       while ((c = getopt_long(argc, argv, "N:o:", 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 'o':
+                       outfile = optarg;
+                       break;
+               default:
+                       fprintf(stderr, "%s: option '%s' unrecognized.\n",
+                               progname, argv[optind - 1]);
+                       return -EINVAL;
+               }
+       }
+
+       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;
+       }
+
+       if (mirror_id == 0) {
+               fprintf(stderr, "%s %s: no valid mirror ID is provided\n",
+                       progname, argv[0]);
+               return rc;
+       }
+
+       /* open mirror file */
+       fname = argv[optind];
+
+       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;
+                       }
+                       written += written2;
+               }
+
+               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;
+       }
+
+       fsync(outfd);
+       rc = 0;
+
+free_buf:
+       free(buf);
+close_outfd:
+       if (outfile)
+               close(outfd);
+close_fd:
+       close(fd);
+
+       return rc;
+}
+
+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 = 'N',   .name = "mirror-id",    .has_arg = required_argument },
+       { .val = 'i',   .name = "inputfile",    .has_arg = required_argument },
+       { .name = NULL } };
+
+       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, "%s: option '%s' unrecognized\n",
+                               progname, argv[optind - 1]);
+                       return -EINVAL;
+               }
+       }
+
+       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;
+       }
+
+       if (mirror_id == 0) {
+               fprintf(stderr, "%s %s: no valid mirror ID is provided\n",
+                       progname, argv[0]);
+               return rc;
+       }
+
+       /* open mirror file */
+       fname = argv[optind];
+
+       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;
+       }
+
+       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;
+       }
+
+       /* 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;
+       }
+
+       /* 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;
+       }
+
+       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;
+               }
+
+               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;
+
+               /* 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 (pos & (page_size - 1)) {
+               rc = llapi_mirror_truncate(fd, mirror_id, pos);
+               if (rc < 0)
+                       goto free_buf;
+       }
+
+       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;
+}
+
 /**
  * struct verify_chunk - Mirror chunk to be verified.
  * @chunk:        [start, end) of the chunk.
@@ -8774,7 +9339,7 @@ static inline int lfs_mirror_verify(int argc, char **argv)
                        verbose++;
                        break;
                default:
-                       fprintf(stderr, "%s: options '%s' unrecognized.\n",
+                       fprintf(stderr, "%s: option '%s' unrecognized.\n",
                                progname, argv[optind - 1]);
                        rc = -EINVAL;
                        goto error;
@@ -8900,8 +9465,9 @@ static int lfs_getsom(int argc, char **argv)
        attrs = (void *)buf;
        rc = lgetxattr(path, "trusted.som", attrs, sizeof(buf));
        if (rc < 0) {
-               fprintf(stderr, "%s failed to get som xattr: %s\n", argv[0],
-                       strerror(-rc));
+               rc = -errno;
+               fprintf(stderr, "%s failed to get som xattr: %s (%d)\n",
+                       argv[0], strerror(errno), errno);
                return rc;
        }
 
@@ -8927,7 +9493,7 @@ static int lfs_getsom(int argc, char **argv)
                return CMD_HELP;
        }
 
-       return rc;
+       return 0;
 }
 
 /**