Whamcloud - gitweb
LU-5710 all: second batch of corrected typos and grammar errors
[fs/lustre-release.git] / lustre / utils / mkfs_lustre.c
index c2d8d99..2b9e5a6 100644 (file)
@@ -27,7 +27,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, Whamcloud, Inc.
+ * Copyright (c) 2011, 2014, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -47,6 +47,7 @@
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
 #endif
+#include "mount_utils.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <getopt.h>
 #include <limits.h>
 #include <ctype.h>
-
-#ifdef __linux__
-/* libcfs.h is not really needed here, but on SLES10/PPC, fs.h includes idr.h
- * which requires BITS_PER_LONG to be defined */
-#include <libcfs/libcfs.h>
-#ifndef BLKGETSIZE64
-#include <linux/fs.h> /* for BLKGETSIZE64 */
-#endif
-#include <linux/version.h>
-#endif
+#include <lnet/nidstr.h>
 #include <lustre_disk.h>
 #include <lustre_param.h>
 #include <lnet/lnetctl.h>
 #include <lustre_ver.h>
-#include "mount_utils.h"
 
 #ifndef PATH_MAX
 #define PATH_MAX 4096
 
 char *progname;
 int verbose = 1;
+int version;
 static int print_only = 0;
-static int upgrade_to_18 = 0;
 
-void usage(FILE *out)
-{
-        fprintf(out, "%s v"LUSTRE_VERSION_STRING"\n", progname);
-        fprintf(out, "usage: %s <target types> [options] <device>\n", progname);
-        fprintf(out,
-                "\t<device>:block device or file (e.g /dev/sda or /tmp/ost1)\n"
-                "\ttarget types:\n"
-                "\t\t--ost: object storage, mutually exclusive with mdt,mgs\n"
-                "\t\t--mdt: metadata storage, mutually exclusive with ost\n"
-                "\t\t--mgs: configuration management service - one per site\n"
-                "\toptions (in order of popularity):\n"
-                "\t\t--mgsnode=<nid>[,<...>] : NID(s) of a remote mgs node\n"
-                "\t\t\trequired for all targets other than the mgs node\n"
-                "\t\t--fsname=<filesystem_name> : default is 'lustre'\n"
-                "\t\t--failnode=<nid>[,<...>] : NID(s) of a failover partner\n"
-                "\t\t\tcannot be used with --servicenode\n"
-                "\t\t--servicenode=<nid>[,<...>] : NID(s) of all service partners\n"
-                "\t\t\ttreat all nodes as equal service node, cannot be used with --failnode\n"
-                "\t\t--param <key>=<value> : set a permanent parameter\n"
-                "\t\t\te.g. --param sys.timeout=40\n"
-                "\t\t\t     --param lov.stripesize=2M\n"
-                "\t\t--index=#N : target index (i.e. ost index within lov)\n"
-                "\t\t--comment=<user comment>: arbitrary string (%d bytes)\n"
-                "\t\t--mountfsoptions=<opts> : permanent mount options\n"
-                "\t\t--network=<net>[,<...>] : restrict OST/MDT to network(s)\n"
-#ifndef TUNEFS
-                "\t\t--backfstype=<fstype> : backing fs type (ext3, ldiskfs)\n"
-                "\t\t--device-size=#N(KB) : device size for loop devices\n"
-                "\t\t--mkfsoptions=<opts> : format options\n"
-                "\t\t--reformat: overwrite an existing disk\n"
-                "\t\t--stripe-count-hint=#N : for optimizing MDT inode size\n"
-                "\t\t--iam-dir: use IAM directory format, not ext3 compatible\n"
+#ifdef HAVE_LDISKFS_OSD
+#define FSLIST_LDISKFS "ldiskfs"
+#define HAVE_FSLIST
 #else
-                "\t\t--erase-params : erase all old parameter settings\n"
-                "\t\t--nomgs: turn off MGS service on this MDT\n"
-                "\t\t--writeconf: erase all config logs for this fs.\n"
-#endif
-                "\t\t--dryrun: just report what we would do; "
-                "don't write to disk\n"
-                "\t\t--verbose : e.g. show mkfs progress\n"
-                "\t\t--quiet\n",
-                (int)sizeof(((struct lustre_disk_data *)0)->ldd_userdata));
-        return;
-}
-
-/*================ utility functions =====================*/
-
-char *strscat(char *dst, char *src, int buflen) {
-        dst[buflen - 1] = 0;
-        if (strlen(dst) + strlen(src) >= buflen) {
-                fprintf(stderr, "string buffer overflow (max %d): '%s' + '%s'"
-                        "\n", buflen, dst, src);
-                exit(EOVERFLOW);
-        }
-        return strcat(dst, src);
-
-}
-
-char *strscpy(char *dst, char *src, int buflen) {
-        dst[0] = 0;
-        return strscat(dst, src, buflen);
-}
-
-inline unsigned int
-dev_major (unsigned long long int __dev)
-{
-        return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff);
-}
-
-inline unsigned int
-dev_minor (unsigned long long int __dev)
-{
-        return (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff);
-}
-
-int get_os_version()
-{
-        static int version = 0;
-
-        if (!version) {
-                int fd;
-                char release[4] = "";
-
-                fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
-                if (fd < 0) {
-                        fprintf(stderr, "%s: Warning: Can't resolve kernel "
-                                "version, assuming 2.6\n", progname);
-                } else {
-                        if (read(fd, release, 4) < 0) {
-                                fprintf(stderr, "reading from /proc/sys/kernel"
-                                        "/osrelease: %s\n", strerror(errno));
-                                close(fd);
-                                exit(-1);
-                        }
-                        close(fd);
-                }
-                if (strncmp(release, "2.4.", 4) == 0)
-                        version = 24;
-                else
-                        version = 26;
-        }
-        return version;
-}
-
-static int check_mtab_entry(char *spec)
-{
-        FILE *fp;
-        struct mntent *mnt;
-
-        fp = setmntent(MOUNTED, "r");
-        if (fp == NULL)
-                return(0);
-
-        while ((mnt = getmntent(fp)) != NULL) {
-                if (strcmp(mnt->mnt_fsname, spec) == 0) {
-                        endmntent(fp);
-                        fprintf(stderr, "%s: according to %s %s is "
-                                "already mounted on %s\n",
-                                progname, MOUNTED, spec, mnt->mnt_dir);
-                        return(EEXIST);
-                }
-        }
-        endmntent(fp);
-
-        return(0);
-}
-
-/*============ disk dev functions ===================*/
-
-/* Setup a file in the first unused loop_device */
-int loop_setup(struct mkfs_opts *mop)
-{
-        char loop_base[20];
-        char l_device[64];
-        int i, ret = 0;
-
-        /* Figure out the loop device names */
-        if (!access("/dev/loop0", F_OK | R_OK)) {
-                strcpy(loop_base, "/dev/loop\0");
-        } else if (!access("/dev/loop/0", F_OK | R_OK)) {
-                strcpy(loop_base, "/dev/loop/\0");
-        } else {
-                fprintf(stderr, "%s: can't access loop devices\n", progname);
-                return EACCES;
-        }
-
-        /* Find unused loop device */
-        for (i = 0; i < MAX_LOOP_DEVICES; i++) {
-                char cmd[PATH_MAX];
-                int cmdsz = sizeof(cmd);
-
-                sprintf(l_device, "%s%d", loop_base, i);
-                if (access(l_device, F_OK | R_OK))
-                        break;
-                snprintf(cmd, cmdsz, "losetup %s > /dev/null 2>&1", l_device);
-                ret = system(cmd);
-
-                /* losetup gets 1 (ret=256) for non-set-up device */
-                if (ret) {
-                        /* Set up a loopback device to our file */
-                        snprintf(cmd, cmdsz, "losetup %s %s", l_device,
-                                 mop->mo_device);
-                        ret = run_command(cmd, cmdsz);
-                        if (ret == 256)
-                                /* someone else picked up this loop device
-                                 * behind our back */
-                                continue;
-                        if (ret) {
-                                fprintf(stderr, "%s: error %d on losetup: %s\n",
-                                        progname, ret, strerror(ret));
-                                return ret;
-                        }
-                        strscpy(mop->mo_loopdev, l_device,
-                                sizeof(mop->mo_loopdev));
-                        return ret;
-                }
-        }
+ #define FSLIST_LDISKFS ""
+#endif /* HAVE_LDISKFS_OSD */
+#ifdef HAVE_ZFS_OSD
+ #ifdef HAVE_FSLIST
+   #define FSLIST_ZFS "|zfs"
+ #else
+  #define FSLIST_ZFS "zfs"
+  #define HAVE_FSLIST
+ #endif
+#else
+ #define FSLIST_ZFS ""
+#endif /* HAVE_ZFS_OSD */
 
-        fprintf(stderr, "%s: out of loop devices!\n", progname);
-        return EMFILE;
-}
+#ifndef HAVE_FSLIST
+ #error "no backing OSD types (ldiskfs or ZFS) are configured"
+#endif
 
-int loop_cleanup(struct mkfs_opts *mop)
-{
-        char cmd[150];
-        int ret = 1;
-        if ((mop->mo_flags & MO_IS_LOOP) && *mop->mo_loopdev) {
-                sprintf(cmd, "losetup -d %s", mop->mo_loopdev);
-                ret = run_command(cmd, sizeof(cmd));
-        }
-        return ret;
-}
+#define FSLIST FSLIST_LDISKFS FSLIST_ZFS
 
-__u64 get_device_size(char* device)
+void usage(FILE *out)
 {
-        int ret, fd;
-        __u64 size = 0;
-
-        fd = open(device, O_RDONLY);
-        if (fd < 0) {
-                fprintf(stderr, "%s: cannot open %s: %s\n",
-                        progname, device, strerror(errno));
-                return 0;
-        }
-
-#ifdef BLKGETSIZE64
-        /* size in bytes. bz5831 */
-        ret = ioctl(fd, BLKGETSIZE64, (void*)&size);
+       fprintf(out, "usage: %s <target type> [--backfstype="FSLIST"] "
+               "--fsname=<filesystem name>\n"
+               "\t--index=<target index> [options] <device>\n", progname);
+#ifdef HAVE_ZFS_OSD
+       fprintf(out, "usage: %s <target type> --backfstype=zfs "
+               "--fsname=<filesystem name> [options]\n"
+               "\t<pool name>/<dataset name>\n"
+               "\t[[<vdev type>] <device> [<device> ...] [vdev type>] ...]\n",
+               progname);
+#endif
+       fprintf(out,
+               "\t<device>:block device or file (e.g /dev/sda or /tmp/ost1)\n"
+#ifdef HAVE_ZFS_OSD
+               "\t<pool name>: name of ZFS pool where target is created "
+                       "(e.g. tank)\n"
+               "\t<dataset name>: name of new dataset, must be unique within "
+                       "pool (e.g. ost1)\n"
+               "\t<vdev type>: type of vdev (mirror, raidz, raidz2, spare, "
+                       "cache, log)\n"
+#endif
+               "\n"
+               "\ttarget types:\n"
+               "\t\t--mgs: configuration management service\n"
+               "\t\t--mdt: metadata storage, mutually exclusive with ost\n"
+               "\t\t--ost: object storage, mutually exclusive with mdt, mgs\n"
+               "\toptions (in order of popularity):\n"
+               "\t\t--index=#N: numerical target index (0..N)\n"
+               "\t\t\trequired for all targets other than the MGS\n"
+               "\t\t--fsname=<8_char_filesystem_name>: fs targets belong to\n"
+               "\t\t\trequired for all targets other than MGS\n"
+               "\t\t--mgsnode=<nid>[,<...>]: NID(s) of remote MGS\n"
+               "\t\t\trequired for all targets other than MGS\n"
+               "\t\t--mountfsoptions=<opts>: permanent mount options\n"
+               "\t\t--failnode=<nid>[,<...>]: NID(s) of backup failover node\n"
+               "\t\t\tmutually exclusive with --servicenode\n"
+               "\t\t--servicenode=<nid>[,<...>]: NID(s) of service partners\n"
+               "\t\t\ttreat nodes as equal service node, mutually exclusive "
+                       "with --failnode\n"
+               "\t\t--param <key>=<value>: set a permanent parameter\n"
+               "\t\t\te.g. --param sys.timeout=40\n"
+               "\t\t\t     --param lov.stripesize=2M\n"
+               "\t\t--network=<net>[,<...>]: restrict OST/MDT to network(s)\n"
+#ifndef TUNEFS
+               "\t\t--backfstype=<fstype>: backing fs type (ext3, ldiskfs)\n"
+               "\t\t--device-size=#N(KB): device size for loop devices\n"
+               "\t\t--mkfsoptions=<opts>: format options\n"
+               "\t\t--reformat: overwrite an existing disk\n"
+               "\t\t--replace: replace an old target with the same index\n"
+               "\t\t--stripe-count-hint=#N: for optimizing MDT inode size\n"
 #else
-        {
-                __u32 lsize = 0;
-                /* size in blocks */
-                ret = ioctl(fd, BLKGETSIZE, (void*)&lsize);
-                size = (__u64)lsize * 512;
-        }
+               "\t\t--erase-params: erase all old parameter settings\n"
+               "\t\t--nomgs: turn off MGS service on this MDT\n"
+               "\t\t--writeconf: erase all config logs for this fs.\n"
+               "\t\t--quota: enable space accounting on old 2.x device.\n"
 #endif
-        close(fd);
-        if (ret < 0) {
-                fprintf(stderr, "%s: size ioctl failed: %s\n",
-                        progname, strerror(errno));
-                return 0;
-        }
-
-        vprint("device size = "LPU64"MB\n", size >> 20);
-        /* return value in KB */
-        return size >> 10;
-}
-
-int loop_format(struct mkfs_opts *mop)
-{
-        int fd;
-
-        if (mop->mo_device_sz == 0) {
-                fatal();
-                fprintf(stderr, "loop device requires a --device-size= "
-                        "param\n");
-                return EINVAL;
-        }
-
-        fd = creat(mop->mo_device, S_IRUSR|S_IWUSR);
-        if (fd < 0) {
-                fatal();
-                fprintf(stderr, "%s: Unable to create backing store: %s\n",
-                        progname, strerror(errno));
-                return errno;
-        }
-
-        if (ftruncate(fd, mop->mo_device_sz * 1024) != 0) {
-                close(fd);
-                fatal();
-                fprintf(stderr, "%s: Unable to truncate backing store: %s\n",
-                        progname, strerror(errno));
-                return errno;
-        }
-
-        close(fd);
-        return 0;
+               "\t\t--comment=<user comment>: arbitrary string (%d bytes)\n"
+               "\t\t--dryrun: report what we would do; don't write to disk\n"
+               "\t\t--verbose: e.g. show mkfs progress\n"
+               "\t\t-V|--version: output build version of the utility and\n"
+               "\t\t\texit\n"
+               "\t\t--quiet\n",
+               (int)sizeof(((struct lustre_disk_data *)0)->ldd_userdata));
+       return;
 }
 
 /* ==================== Lustre config functions =============*/
@@ -362,7 +184,7 @@ void print_ldd(char *str, struct lustre_disk_data *ldd)
         printf("Lustre FS:  %s\n", ldd->ldd_fsname);
         printf("Mount type: %s\n", MT_STR(ldd));
         printf("Flags:      %#x\n", ldd->ldd_flags);
-        printf("              (%s%s%s%s%s%s%s%s%s%s)\n",
+       printf("              (%s%s%s%s%s%s%s%s%s)\n",
                IS_MDT(ldd) ? "MDT ":"",
                IS_OST(ldd) ? "OST ":"",
                IS_MGS(ldd) ? "MGS ":"",
@@ -370,7 +192,6 @@ void print_ldd(char *str, struct lustre_disk_data *ldd)
                ldd->ldd_flags & LDD_F_VIRGIN     ? "first_time ":"",
                ldd->ldd_flags & LDD_F_UPDATE     ? "update ":"",
                ldd->ldd_flags & LDD_F_WRITECONF  ? "writeconf ":"",
-               ldd->ldd_flags & LDD_F_IAM_DIR  ? "IAM_dir_format ":"",
                ldd->ldd_flags & LDD_F_NO_PRIMNODE? "no_primnode ":"",
                ldd->ldd_flags & LDD_F_UPGRADE14  ? "upgrade1.4 ":"");
         printf("Persistent mount opts: %s\n", ldd->ldd_mount_opts);
@@ -382,15 +203,18 @@ void print_ldd(char *str, struct lustre_disk_data *ldd)
 
 void set_defaults(struct mkfs_opts *mop)
 {
-        mop->mo_ldd.ldd_magic = LDD_MAGIC;
-        mop->mo_ldd.ldd_config_ver = 1;
-        mop->mo_ldd.ldd_flags = LDD_F_NEED_INDEX | LDD_F_UPDATE | LDD_F_VIRGIN;
-        mop->mo_mgs_failnodes = 0;
-        strcpy(mop->mo_ldd.ldd_fsname, "lustre");
-        mop->mo_ldd.ldd_mount_type = LDD_MT_LDISKFS;
-
-        mop->mo_ldd.ldd_svindex = INDEX_UNASSIGNED;
-        mop->mo_stripe_count = 1;
+       mop->mo_ldd.ldd_magic = LDD_MAGIC;
+       mop->mo_ldd.ldd_config_ver = 1;
+       mop->mo_ldd.ldd_flags = LDD_F_NEED_INDEX | LDD_F_UPDATE | LDD_F_VIRGIN;
+#ifdef HAVE_LDISKFS_OSD
+       mop->mo_ldd.ldd_mount_type = LDD_MT_LDISKFS;
+#else
+       mop->mo_ldd.ldd_mount_type = LDD_MT_ZFS;
+#endif
+       mop->mo_ldd.ldd_svindex = INDEX_UNASSIGNED;
+       mop->mo_mgs_failnodes = 0;
+       mop->mo_stripe_count = 1;
+       mop->mo_pool_vdevs = NULL;
 }
 
 static inline void badopt(const char *opt, char *type)
@@ -400,24 +224,6 @@ static inline void badopt(const char *opt, char *type)
         usage(stderr);
 }
 
-int add_param(char *buf, char *key, char *val)
-{
-        int end = sizeof(((struct lustre_disk_data *)0)->ldd_params);
-        int start = strlen(buf);
-        int keylen = 0;
-
-        if (key)
-                keylen = strlen(key);
-        if (start + 1 + keylen + strlen(val) >= end) {
-                fprintf(stderr, "%s: params are too long-\n%s %s%s\n",
-                        progname, buf, key ? key : "", val);
-                return 1;
-        }
-
-        sprintf(buf + start, " %s%s", key ? key : "", val);
-        return 0;
-}
-
 /* from mount_lustre */
 /* Get rid of symbolic hostnames for tcp, since kernel can't do lookups */
 #define MAXNIDSTR 1024
@@ -441,10 +247,11 @@ static char *convert_hostnames(char *s1)
                 sep = *s2;
                 *s2 = '\0';
                 nid = libcfs_str2nid(s1);
+               *s2 = sep;
 
                 if (nid == LNET_NID_ANY) {
-                        fprintf(stderr, "%s: Can't parse NID '%s'\n",
-                                progname, s1);
+                       fprintf(stderr, "%s: Cannot resolve hostname '%s'.\n",
+                               progname, s1);
                         free(converted);
                         return NULL;
                 }
@@ -468,53 +275,50 @@ static char *convert_hostnames(char *s1)
 int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                char **mountopts)
 {
-        static struct option long_opt[] = {
-                {"iam-dir", 0, 0, 'a'},
-                {"backfstype", 1, 0, 'b'},
-                {"stripe-count-hint", 1, 0, 'c'},
-                {"comment", 1, 0, 'u'},
-                {"configdev", 1, 0, 'C'},
-                {"device-size", 1, 0, 'd'},
-                {"dryrun", 0, 0, 'n'},
-                {"erase-params", 0, 0, 'e'},
-                {"failnode", 1, 0, 'f'},
-                {"failover", 1, 0, 'f'},
-                {"mgs", 0, 0, 'G'},
-                {"help", 0, 0, 'h'},
-                {"index", 1, 0, 'i'},
-                {"mkfsoptions", 1, 0, 'k'},
-                {"mgsnode", 1, 0, 'm'},
-                {"mgsnid", 1, 0, 'm'},
-                {"mdt", 0, 0, 'M'},
-                {"fsname",1, 0, 'L'},
-                {"noformat", 0, 0, 'n'},
-                {"nomgs", 0, 0, 'N'},
-                {"mountfsoptions", 1, 0, 'o'},
-                {"ost", 0, 0, 'O'},
-                {"param", 1, 0, 'p'},
-                {"print", 0, 0, 'n'},
-                {"quiet", 0, 0, 'q'},
-                {"reformat", 0, 0, 'r'},
-                {"servicenode", 1, 0, 's'},
-                {"verbose", 0, 0, 'v'},
-                {"writeconf", 0, 0, 'w'},
-                {"upgrade_to_18", 0, 0, 'U'},
-                {"network", 1, 0, 't'},
-                {0, 0, 0, 0}
-        };
-        char *optstring = "b:c:C:d:ef:Ghi:k:L:m:MnNo:Op:Pqrs:t:Uu:vw";
-        int opt;
-        int rc, longidx;
-        int failnode_set = 0, servicenode_set = 0;
+       static struct option long_opt[] = {
+               { "backfstype",         required_argument,      NULL, 'b' },
+               { "stripe-count-hint",  required_argument,      NULL, 'c' },
+               { "comment",            required_argument,      NULL, 'u' },
+               { "configdev",          required_argument,      NULL, 'C' },
+               { "device-size",        required_argument,      NULL, 'd' },
+               { "dryrun",             no_argument,            NULL, 'n' },
+               { "erase-params",       no_argument,            NULL, 'e' },
+               { "failnode",           required_argument,      NULL, 'f' },
+               { "failover",           required_argument,      NULL, 'f' },
+               { "mgs",                no_argument,            NULL, 'G' },
+               { "help",               no_argument,            NULL, 'h' },
+               { "index",              required_argument,      NULL, 'i' },
+               { "mkfsoptions",        required_argument,      NULL, 'k' },
+               { "mgsnode",            required_argument,      NULL, 'm' },
+               { "mgsnid",             required_argument,      NULL, 'm' },
+               { "mdt",                no_argument,            NULL, 'M' },
+               { "fsname",             required_argument,      NULL, 'L' },
+               { "noformat",           no_argument,            NULL, 'n' },
+               { "nomgs",              no_argument,            NULL, 'N' },
+               { "mountfsoptions",     required_argument,      NULL, 'o' },
+               { "ost",                no_argument,            NULL, 'O' },
+               { "param",              required_argument,      NULL, 'p' },
+               { "print",              no_argument,            NULL, 'n' },
+               { "quiet",              no_argument,            NULL, 'q' },
+               { "quota",              no_argument,            NULL, 'Q' },
+               { "reformat",           no_argument,            NULL, 'r' },
+               { "replace",            no_argument,            NULL, 'R' },
+               { "servicenode",        required_argument,      NULL, 's' },
+               { "network",            required_argument,      NULL, 't' },
+               { "verbose",            no_argument,            NULL, 'v' },
+               { "version",            no_argument,            NULL, 'V' },
+               { "writeconf",          no_argument,            NULL, 'w' },
+               { 0,                    0,                      NULL,  0  }
+       };
+       char *optstring = "b:c:C:d:ef:Ghi:k:L:m:MnNo:Op:PqrRs:t:Uu:vVw";
+       int opt;
+       int rc, longidx;
+       int failnode_set = 0, servicenode_set = 0;
+       int replace = 0;
 
         while ((opt = getopt_long(argc, argv, optstring, long_opt, &longidx)) !=
                EOF) {
                 switch (opt) {
-                case 'a': {
-                        if (IS_MDT(&mop->mo_ldd))
-                                mop->mo_ldd.ldd_flags |= LDD_F_IAM_DIR;
-                        break;
-                }
                 case 'b': {
                         int i = 0;
                         while (i < LDD_MT_LAST) {
@@ -524,6 +328,11 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                                 }
                                 i++;
                         }
+                       if (i == LDD_MT_LAST) {
+                               fprintf(stderr, "%s: invalid backend filesystem"
+                                       " type %s\n", progname, optarg);
+                               return 1;
+                       }
                         break;
                 }
                 case 'c':
@@ -544,9 +353,9 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                         //FIXME
                         printf("Configdev not implemented\n");
                         return 1;
-                case 'd':
-                        mop->mo_device_sz = atol(optarg);
-                        break;
+               case 'd':
+                       mop->mo_device_kb = atol(optarg);
+                       break;
                 case 'e':
                         mop->mo_ldd.ldd_params[0] = '\0';
                         /* Must update the mgs logs */
@@ -567,8 +376,8 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                         nids = convert_hostnames(optarg);
                         if (!nids)
                                 return 1;
-                        rc = add_param(mop->mo_ldd.ldd_params, PARAM_FAILNODE,
-                                       nids);
+                       rc = append_param(mop->mo_ldd.ldd_params,
+                                         PARAM_FAILNODE, nids, ':');
                         free(nids);
                         if (rc)
                                 return rc;
@@ -597,13 +406,16 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                                         " a registered target\n", progname);
                                 return 1;
                         }
-                        if (IS_MDT(&mop->mo_ldd) || IS_OST(&mop->mo_ldd)) {
-                                mop->mo_ldd.ldd_svindex = atol(optarg);
-                                mop->mo_ldd.ldd_flags &= ~LDD_F_NEED_INDEX;
-                        } else {
-                                badopt(long_opt[longidx].name, "MDT,OST");
-                                return 1;
-                        }
+                       /* LU-2374: check whether it is OST/MDT later */
+                       mop->mo_ldd.ldd_svindex = atol(optarg);
+                       if (mop->mo_ldd.ldd_svindex >= INDEX_UNASSIGNED) {
+                               fprintf(stderr, "%s: wrong index %u. "
+                                       "Target index must be less than %u.\n",
+                                       progname, mop->mo_ldd.ldd_svindex,
+                                       INDEX_UNASSIGNED);
+                               return 1;
+                       }
+                       mop->mo_ldd.ldd_flags &= ~LDD_F_NEED_INDEX;
                         break;
                 case 'k':
                         strscpy(mop->mo_mkfsopts, optarg,
@@ -637,8 +449,8 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                         char *nids = convert_hostnames(optarg);
                         if (!nids)
                                 return 1;
-                        rc = add_param(mop->mo_ldd.ldd_params, PARAM_MGSNODE,
-                                       nids);
+                       rc = append_param(mop->mo_ldd.ldd_params,
+                                         PARAM_MGSNODE, nids, ':');
                         free(nids);
                         if (rc)
                                 return rc;
@@ -673,6 +485,9 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                 case 'r':
                         mop->mo_flags |= MO_FORCEFORMAT;
                         break;
+               case 'R':
+                       replace = 1;
+                       break;
                 case 't':
                         if (!IS_MDT(&mop->mo_ldd) && !IS_OST(&mop->mo_ldd)) {
                                 badopt(long_opt[longidx].name, "MDT,OST");
@@ -693,15 +508,20 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                         strscpy(mop->mo_ldd.ldd_userdata, optarg,
                                 sizeof(mop->mo_ldd.ldd_userdata));
                         break;
-                case 'v':
-                        verbose++;
-                        break;
-                case 'w':
-                        mop->mo_ldd.ldd_flags |= LDD_F_WRITECONF;
-                        break;
-                case 'U':
-                        upgrade_to_18 = 1;
-                        break;
+               case 'v':
+                       verbose++;
+                       break;
+               case 'V':
+                       ++version;
+                       fprintf(stdout, "%s %s\n", progname,
+                               LUSTRE_VERSION_STRING);
+                       return 0;
+               case 'w':
+                       mop->mo_ldd.ldd_flags |= LDD_F_WRITECONF;
+                       break;
+               case 'Q':
+                       mop->mo_flags |= MO_QUOTA;
+                       break;
                 default:
                         if (opt != '?') {
                                 fatal();
@@ -711,98 +531,38 @@ int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
                 }
         }//while
 
-        /* Last arg is device */
-        if (optind != argc - 1) {
-                fatal();
-                fprintf(stderr, "Bad argument: %s\n", argv[optind]);
-                return EINVAL;
-        }
-
-        /* single argument: <device> */
-        if (argc == 2)
-                ++print_only;
+       /* Need to clear this flag after parsing 'L' and 'i' options. */
+       if (replace)
+               mop->mo_ldd.ldd_flags &= ~LDD_F_VIRGIN;
+
+       if (optind == argc) {
+               /* The user didn't specify device name */
+               fatal();
+               fprintf(stderr, "Not enough arguments - device name or "
+                       "pool/dataset name not specified.\n");
+               return EINVAL;
+       } else {
+               /*  The device or pool/filesystem name */
+               strscpy(mop->mo_device, argv[optind], sizeof(mop->mo_device));
+
+               /* Followed by optional vdevs */
+               if (optind < argc - 1)
+                       mop->mo_pool_vdevs = (char **) &argv[optind + 1];
+       }
 
         return 0;
 }
 
-/* Search for opt in mntlist, returning true if found.
- */
-static int in_mntlist(char *opt, char *mntlist)
-{
-        char *ml, *mlp, *item, *ctx = NULL;
-
-        if (!(ml = strdup(mntlist))) {
-                fprintf(stderr, "%s: out of memory\n", progname);
-                exit(1);
-        }
-        mlp = ml;
-        while ((item = strtok_r(mlp, ",", &ctx))) {
-                if (!strcmp(opt, item))
-                        break;
-                mlp = NULL;
-        }
-        free(ml);
-        return (item != NULL);
-}
-
-/* Issue a message on stderr for every item in wanted_mountopts that is not
- * present in mountopts.  The justwarn boolean toggles between error and
- * warning message.  Return an error count.
- */
-static int check_mountfsoptions(char *mountopts, char *wanted_mountopts,
-                                int justwarn)
-{
-        char *ml, *mlp, *item, *ctx = NULL;
-        int errors = 0;
-
-        if (!(ml = strdup(wanted_mountopts))) {
-                fprintf(stderr, "%s: out of memory\n", progname);
-                exit(1);
-        }
-        mlp = ml;
-        while ((item = strtok_r(mlp, ",", &ctx))) {
-                if (!in_mntlist(item, mountopts)) {
-                        fprintf(stderr, "%s: %s mount option `%s' is missing\n",
-                                progname, justwarn ? "Warning: default"
-                                : "Error: mandatory", item);
-                        errors++;
-                }
-                mlp = NULL;
-        }
-        free(ml);
-        return errors;
-}
-
-/* Trim embedded white space, leading and trailing commas from string s.
- */
-static void trim_mountfsoptions(char *s)
-{
-        char *p;
-
-        for (p = s; *p; ) {
-                if (isspace(*p)) {
-                        memmove(p, p + 1, strlen(p + 1) + 1);
-                        continue;
-                }
-                p++;
-        }
-
-        while (s[0] == ',')
-                memmove(&s[0], &s[1], strlen(&s[1]) + 1);
-
-        p = s + strlen(s) - 1;
-        while (p >= s && *p == ',')
-                *p-- = '\0';
-}
-
 int main(int argc, char *const argv[])
 {
-        struct mkfs_opts mop;
-        struct lustre_disk_data *ldd;
-        char *mountopts = NULL;
-        char always_mountopts[512] = "";
-        char default_mountopts[512] = "";
-        int ret = 0;
+       struct mkfs_opts mop;
+       struct lustre_disk_data *ldd;
+       char *mountopts = NULL;
+       char always_mountopts[512] = "";
+       char default_mountopts[512] = "";
+       unsigned mount_type;
+       int ret = 0;
+       int ret2 = 0;
 
         if ((progname = strrchr(argv[0], '/')) != NULL)
                 progname++;
@@ -820,21 +580,16 @@ int main(int argc, char *const argv[])
         /* device is last arg */
         strscpy(mop.mo_device, argv[argc - 1], sizeof(mop.mo_device));
 
-        /* Are we using a loop device? */
-        ret = is_block(mop.mo_device);
-        if (ret < 0) {
-                ret = errno;
-                goto out;
-        }
-        if (ret == 0)
-                mop.mo_flags |= MO_IS_LOOP;
+       ret = osd_init();
+       if (ret)
+               return ret;
 
 #ifdef TUNEFS
         /* For tunefs, we must read in the old values before parsing any
            new ones. */
 
         /* Check whether the disk has already been formatted by mkfs.lustre */
-        ret = is_lustre_target(&mop);
+       ret = osd_is_lustre(mop.mo_device, &mount_type);
         if (ret == 0) {
                 fatal();
                 fprintf(stderr, "Device %s has not been formatted with "
@@ -842,24 +597,37 @@ int main(int argc, char *const argv[])
                 ret = ENODEV;
                 goto out;
         }
+       mop.mo_ldd.ldd_mount_type = mount_type;
 
-        ret = read_local_files(&mop);
+       ret = osd_read_ldd(mop.mo_device, &mop.mo_ldd);
         if (ret) {
                 fatal();
                 fprintf(stderr, "Failed to read previous Lustre data from %s "
                         "(%d)\n", mop.mo_device, ret);
                 goto out;
         }
-        if (strstr(mop.mo_ldd.ldd_params, PARAM_MGSNODE))
-            mop.mo_mgs_failnodes++;
+       mop.mo_ldd.ldd_flags &= ~(LDD_F_WRITECONF | LDD_F_VIRGIN);
+
+       /* svname of the form lustre:OST1234 means never registered */
+       ret = strlen(mop.mo_ldd.ldd_svname);
+       if (mop.mo_ldd.ldd_svname[ret - 8] == ':') {
+               mop.mo_ldd.ldd_svname[ret - 8] = '-';
+               mop.mo_ldd.ldd_flags |= LDD_F_VIRGIN;
+       } else if (mop.mo_ldd.ldd_svname[ret - 8] == '=') {
+               mop.mo_ldd.ldd_svname[ret - 8] = '-';
+               mop.mo_ldd.ldd_flags |= LDD_F_WRITECONF;
+       }
 
-        if (verbose > 0)
-                print_ldd("Read previous values", &(mop.mo_ldd));
+       if (strstr(mop.mo_ldd.ldd_params, PARAM_MGSNODE))
+               mop.mo_mgs_failnodes++;
+
+       if (verbose > 0)
+               print_ldd("Read previous values", &(mop.mo_ldd));
 #endif
 
-        ret = parse_opts(argc, argv, &mop, &mountopts);
-        if (ret)
-                goto out;
+       ret = parse_opts(argc, argv, &mop, &mountopts);
+       if (ret || version)
+               goto out;
 
         ldd = &mop.mo_ldd;
 
@@ -877,6 +645,18 @@ int main(int argc, char *const argv[])
                 goto out;
         }
 
+       /* Stand alone MGS doesn't need an index */
+       if (!IS_MDT(ldd) && IS_MGS(ldd)) {
+#ifndef TUNEFS /* mkfs.lustre */
+               /* But if --index was specified flag an error */
+               if (!(mop.mo_ldd.ldd_flags & LDD_F_NEED_INDEX)) {
+                       badopt("index", "MDT,OST");
+                       goto out;
+               }
+#endif
+               mop.mo_ldd.ldd_flags &= ~LDD_F_NEED_INDEX;
+       }
+
         if ((mop.mo_ldd.ldd_flags & (LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) ==
             (LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) {
                 fatal();
@@ -885,54 +665,42 @@ int main(int argc, char *const argv[])
                 ret = EINVAL;
                 goto out;
         }
-#if 0
-        /*
-         * Comment out these 2 checks temporarily, since for multi-MDSes
-         * in single node only 1 mds node could have mgs service
-         */
-        if (IS_MDT(ldd) && !IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
-                verrprint("No management node specified, adding MGS to this "
-                          "MDT\n");
-                ldd->ldd_flags |= LDD_F_SV_TYPE_MGS;
-        }
-        if (!IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
-                fatal();
-                if (IS_MDT(ldd))
-                        fprintf(stderr, "Must specify --mgs or --mgsnode=\n");
-                else
-                        fprintf(stderr, "Must specify --mgsnode=\n");
-                ret = EINVAL;
-                goto out;
-        }
-#endif
+
+       if (mop.mo_ldd.ldd_flags & LDD_F_NEED_INDEX)
+               fprintf(stderr, "warning: %s: for Lustre 2.4 and later, the "
+                       "target index must be specified with --index\n",
+                       mop.mo_device);
+
+       /* If no index is supplied for MDT by default set index to zero */
+       if (IS_MDT(ldd) && (ldd->ldd_svindex == INDEX_UNASSIGNED)) {
+               mop.mo_ldd.ldd_flags &= ~LDD_F_NEED_INDEX;
+               mop.mo_ldd.ldd_svindex = 0;
+       }
+       if (!IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
+               fatal();
+               if (IS_MDT(ldd))
+                       fprintf(stderr, "Must specify --mgs or --mgsnode\n");
+               else
+                       fprintf(stderr, "Must specify --mgsnode\n");
+               ret = EINVAL;
+               goto out;
+       }
+       if ((IS_MDT(ldd) || IS_OST(ldd)) && mop.mo_ldd.ldd_fsname[0] == '\0') {
+               fatal();
+               fprintf(stderr, "Must specify --fsname for MDT/OST device\n");
+               ret = EINVAL;
+               goto out;
+       }
 
         /* These are the permanent mount options (always included) */
-        switch (ldd->ldd_mount_type) {
-        case LDD_MT_EXT3:
-        case LDD_MT_LDISKFS:
-        case LDD_MT_LDISKFS2:
-                strscat(default_mountopts, ",errors=remount-ro",
-                        sizeof(default_mountopts));
-                if (IS_MDT(ldd) || IS_MGS(ldd))
-                        strscat(always_mountopts, ",user_xattr",
-                                sizeof(always_mountopts));
-                /* NB: Files created while extents are enabled can only be read
-                 * if mounted using the ext4 or ldiskfs filesystem type. */
-                if (IS_OST(ldd) &&
-                    (ldd->ldd_mount_type == LDD_MT_LDISKFS ||
-                     ldd->ldd_mount_type == LDD_MT_LDISKFS2)) {
-                        strscat(default_mountopts, ",extents,mballoc",
-                                sizeof(default_mountopts));
-                }
-                break;
-        default:
-                fatal();
-                fprintf(stderr, "unknown fs type %d '%s'\n",
-                        ldd->ldd_mount_type,
-                        MT_STR(ldd));
-                ret = EINVAL;
-                goto out;
-        }
+       ret = osd_prepare_lustre(&mop,
+                                default_mountopts, sizeof(default_mountopts),
+                                always_mountopts, sizeof(always_mountopts));
+       if (ret) {
+               fatal();
+               fprintf(stderr, "unable to prepare backend (%d)\n", ret);
+               goto out;
+       }
 
         if (mountopts) {
                 trim_mountfsoptions(mountopts);
@@ -965,8 +733,8 @@ int main(int argc, char *const argv[])
                 goto out;
         }
 
-        if (check_mtab_entry(mop.mo_device))
-                return(EEXIST);
+       if (check_mtab_entry(mop.mo_device, mop.mo_device, NULL, NULL))
+               return(EEXIST);
 
         /* Create the loopback file */
         if (mop.mo_flags & MO_IS_LOOP) {
@@ -994,7 +762,7 @@ int main(int argc, char *const argv[])
 #ifndef TUNEFS /* mkfs.lustre */
         /* Check whether the disk has already been formatted by mkfs.lustre */
         if (!(mop.mo_flags & MO_FORCEFORMAT)) {
-                ret = is_lustre_target(&mop);
+               ret = osd_is_lustre(mop.mo_device, &mount_type);
                 if (ret) {
                         fatal();
                         fprintf(stderr, "Device %s was previously formatted "
@@ -1006,16 +774,31 @@ int main(int argc, char *const argv[])
         }
 
         /* Format the backing filesystem */
-        ret = make_lustre_backfs(&mop);
+       ret = osd_make_lustre(&mop);
         if (ret != 0) {
                 fatal();
                 fprintf(stderr, "mkfs failed %d\n", ret);
                 goto out;
         }
+#else
+       /* update svname with '=' to refresh config */
+       if (mop.mo_ldd.ldd_flags & LDD_F_WRITECONF) {
+               struct mount_opts opts;
+               opts.mo_ldd = mop.mo_ldd;
+               opts.mo_source = mop.mo_device;
+               (void) osd_label_lustre(&opts);
+       }
+
+       /* Enable quota accounting */
+       if (mop.mo_flags & MO_QUOTA) {
+               ret = osd_enable_quota(&mop);
+               goto out;
+       }
+
 #endif
 
         /* Write our config files */
-        ret = write_local_files(&mop);
+       ret = osd_write_ldd(&mop);
         if (ret != 0) {
                 fatal();
                 fprintf(stderr, "failed to write local files\n");
@@ -1023,7 +806,10 @@ int main(int argc, char *const argv[])
         }
 
 out:
-        loop_cleanup(&mop);
+       osd_fini();
+       ret2 = loop_cleanup(&mop);
+       if (ret == 0)
+               ret = ret2;
 
         /* Fix any crazy return values from system() */
         if (ret && ((ret & 255) == 0))