1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2006 Cluster File Systems, Inc.
5 * Author: Nathan Rutman <nathan@clusterfs.com>
7 * This file is part of Lustre, http://www.lustre.org.
9 * Lustre is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Lustre is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Lustre; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 /* This source file is compiled into both mkfs.lustre and tunefs.lustre */
33 #include <sys/types.h>
35 #include <sys/mount.h>
36 #include <sys/utsname.h>
43 /* libcfs.h is not really needed here, but on SLES10/PPC, fs.h includes idr.h which
44 * requires BITS_PER_LONG to be defined */
45 #include <libcfs/libcfs.h>
46 #include <linux/fs.h> /* for BLKGETSIZE64 */
47 #include <linux/version.h>
49 #include <lustre_disk.h>
50 #include <lustre_param.h>
51 #include <lnet/lnetctl.h>
52 #include <lustre_ver.h>
53 #include <mount_utils.h>
59 #define MAX_LOOP_DEVICES 16
60 #define L_BLOCK_SIZE 4096
61 #define INDEX_UNASSIGNED 0xFFFF
62 #define MO_IS_LOOP 0x01
63 #define MO_FORCEFORMAT 0x02
65 /* used to describe the options to format the lustre disk, not persistent */
67 struct lustre_disk_data mo_ldd; /* to be written in MOUNT_DATA_FILE */
68 char mo_device[128]; /* disk device name */
69 char mo_mkfsopts[128]; /* options to the backing-store mkfs */
70 char mo_loopdev[128]; /* in case a loop dev is needed */
71 __u64 mo_device_sz; /* in KB */
79 static int print_only = 0;
80 static int failover = 0;
84 fprintf(out, "%s v"LUSTRE_VERSION_STRING"\n", progname);
85 fprintf(out, "usage: %s <target types> [options] <device>\n", progname);
87 "\t<device>:block device or file (e.g /dev/sda or /tmp/ost1)\n"
89 "\t\t--ost: object storage, mutually exclusive with mdt,mgs\n"
90 "\t\t--mdt: metadata storage, mutually exclusive with ost\n"
91 "\t\t--mgs: configuration management service - one per site\n"
92 "\toptions (in order of popularity):\n"
93 "\t\t--mgsnode=<nid>[,<...>] : NID(s) of a remote mgs node\n"
94 "\t\t\trequired for all targets other than the mgs node\n"
95 "\t\t--fsname=<filesystem_name> : default is 'lustre'\n"
96 "\t\t--failnode=<nid>[,<...>] : NID(s) of a failover partner\n"
97 "\t\t--param <key>=<value> : set a permanent parameter\n"
98 "\t\t\te.g. --param sys.timeout=40\n"
99 "\t\t\t --param lov.stripesize=2M\n"
100 "\t\t--index=#N : target index (i.e. ost index within the lov)\n"
101 /* FIXME implement 1.6.x
102 "\t\t--configdev=<altdevice|file>: store configuration info\n"
103 "\t\t\tfor this device on an alternate device\n"
105 "\t\t--comment=<user comment>: arbitrary user string (%d bytes)\n"
106 "\t\t--mountfsoptions=<opts> : permanent mount options\n"
108 "\t\t--backfstype=<fstype> : backing fs type (ext3, ldiskfs)\n"
109 "\t\t--device-size=#N(KB) : device size for loop devices\n"
110 "\t\t--mkfsoptions=<opts> : format options\n"
111 "\t\t--reformat: overwrite an existing disk\n"
112 "\t\t--stripe-count-hint=#N : used for optimizing MDT inode size\n"
114 "\t\t--erase-params : erase all old parameter settings\n"
115 "\t\t--nomgs: turn off MGS service on this MDT\n"
116 "\t\t--writeconf: erase all config logs for this fs.\n"
118 "\t\t--dryrun: just report what we would do; "
119 "don't write to disk\n"
120 "\t\t--verbose : e.g. show mkfs progress\n"
122 (int)sizeof(((struct lustre_disk_data *)0)->ldd_userdata));
126 #define vprint if (verbose > 0) printf
127 #define verrprint if (verbose >= 0) printf
129 /*================ utility functions =====================*/
131 char *strscat(char *dst, char *src, int buflen) {
133 if (strlen(dst) + strlen(src) >= buflen) {
134 fprintf(stderr, "string buffer overflow (max %d): '%s' + '%s'"
135 "\n", buflen, dst, src);
138 return strcat(dst, src);
142 char *strscpy(char *dst, char *src, int buflen) {
144 return strscat(dst, src, buflen);
148 dev_major (unsigned long long int __dev)
150 return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff);
154 dev_minor (unsigned long long int __dev)
156 return (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff);
161 static int version = 0;
165 char release[4] = "";
167 fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
169 fprintf(stderr, "%s: Warning: Can't resolve kernel "
170 "version, assuming 2.6\n", progname);
172 read(fd, release, 4);
175 if (strncmp(release, "2.4.", 4) == 0)
183 static int check_mtab_entry(char *spec)
188 fp = setmntent(MOUNTED, "r");
192 while ((mnt = getmntent(fp)) != NULL) {
193 if (strcmp(mnt->mnt_fsname, spec) == 0) {
195 fprintf(stderr, "%s: according to %s %s is "
196 "already mounted on %s\n",
197 progname, MOUNTED, spec, mnt->mnt_dir);
206 /*============ disk dev functions ===================*/
208 /* Setup a file in the first unused loop_device */
209 int loop_setup(struct mkfs_opts *mop)
215 /* Figure out the loop device names */
216 if (!access("/dev/loop0", F_OK | R_OK)) {
217 strcpy(loop_base, "/dev/loop\0");
218 } else if (!access("/dev/loop/0", F_OK | R_OK)) {
219 strcpy(loop_base, "/dev/loop/\0");
221 fprintf(stderr, "%s: can't access loop devices\n", progname);
225 /* Find unused loop device */
226 for (i = 0; i < MAX_LOOP_DEVICES; i++) {
228 int cmdsz = sizeof(cmd);
230 sprintf(l_device, "%s%d", loop_base, i);
231 if (access(l_device, F_OK | R_OK))
233 snprintf(cmd, cmdsz, "losetup %s > /dev/null 2>&1", l_device);
236 /* losetup gets 1 (ret=256) for non-set-up device */
238 /* Set up a loopback device to our file */
239 snprintf(cmd, cmdsz, "losetup %s %s", l_device,
241 ret = run_command(cmd, cmdsz);
243 fprintf(stderr, "%s: error %d on losetup: %s\n",
244 progname, ret, strerror(ret));
247 strscpy(mop->mo_loopdev, l_device,
248 sizeof(mop->mo_loopdev));
253 fprintf(stderr, "%s: out of loop devices!\n", progname);
257 int loop_cleanup(struct mkfs_opts *mop)
261 if ((mop->mo_flags & MO_IS_LOOP) && *mop->mo_loopdev) {
262 sprintf(cmd, "losetup -d %s", mop->mo_loopdev);
263 ret = run_command(cmd, sizeof(cmd));
268 /* Determine if a device is a block device (as opposed to a file) */
269 int is_block(char* devname)
274 ret = access(devname, F_OK);
277 ret = stat(devname, &st);
279 fprintf(stderr, "%s: cannot stat %s\n", progname, devname);
282 return S_ISBLK(st.st_mode);
285 __u64 get_device_size(char* device)
290 fd = open(device, O_RDONLY);
292 fprintf(stderr, "%s: cannot open %s: %s\n",
293 progname, device, strerror(errno));
298 /* size in bytes. bz5831 */
299 ret = ioctl(fd, BLKGETSIZE64, (void*)&size);
304 ret = ioctl(fd, BLKGETSIZE, (void*)&lsize);
305 size = (__u64)lsize * 512;
310 fprintf(stderr, "%s: size ioctl failed: %s\n",
311 progname, strerror(errno));
315 vprint("device size = "LPU64"MB\n", size >> 20);
316 /* return value in KB */
320 int loop_format(struct mkfs_opts *mop)
324 if (mop->mo_device_sz == 0) {
326 fprintf(stderr, "loop device requires a --device-size= "
331 ret = creat(mop->mo_device, S_IRUSR|S_IWUSR);
334 fprintf(stderr, "%s: Unable to create backing store: %d\n",
340 ret = truncate(mop->mo_device, mop->mo_device_sz * 1024);
343 fprintf(stderr, "%s: Unable to truncate backing store: %d\n",
350 /* Display the need for the latest e2fsprogs to be installed. make_backfs
351 * indicates if the caller is make_lustre_backfs() or not. */
352 static void disp_old_e2fsprogs_msg(const char *feature, int make_backfs)
354 static int msg_displayed;
357 fprintf(stderr, "WARNING: e2fsprogs does not support %s "
358 "feature.\n\n", feature);
364 fprintf(stderr, "WARNING: The e2fsprogs package currently installed on "
365 "your system does not support \"%s\" feature.\nPlease install "
366 "the latest version of e2fsprogs from http://www.clusterfs.com/"
367 "downloads/public/Lustre/Tools/e2fsprogs/\nto enable this "
368 "feature.\n", feature);
371 fprintf(stderr, "Feature will not be enabled until e2fsprogs "
372 "is updated and 'tune2fs -O %s %%{device}' "
373 "is run.\n\n", feature);
376 /* Check whether the file exists in the device */
377 static int file_in_dev(char *file_name, char *dev_name)
380 char debugfs_cmd[256];
381 unsigned int inode_num;
384 /* Construct debugfs command line. */
385 snprintf(debugfs_cmd, sizeof(debugfs_cmd),
386 "debugfs -c -R 'stat %s' %s 2>&1 | egrep '(Inode|unsupported)'",
387 file_name, dev_name);
389 fp = popen(debugfs_cmd, "r");
391 fprintf(stderr, "%s: %s\n", progname, strerror(errno));
395 if (fscanf(fp, "Inode: %u", &inode_num) == 1) { /* exist */
399 i = fread(debugfs_cmd, 1, sizeof(debugfs_cmd), fp);
402 fprintf(stderr, "%s", debugfs_cmd);
403 if (strstr(debugfs_cmd, "unsupported feature")) {
404 disp_old_e2fsprogs_msg("an unknown", 0);
413 /* Check whether the device has already been used with lustre */
414 static int is_lustre_target(struct mkfs_opts *mop)
418 vprint("checking for existing Lustre data: ");
420 if ((rc = file_in_dev(MOUNT_DATA_FILE, mop->mo_device))) {
422 (rc == 1) ? MOUNT_DATA_FILE : "extents");
423 /* in the -1 case, 'extents' means this really IS a lustre
428 if ((rc = file_in_dev(LAST_RCVD, mop->mo_device))) {
429 vprint("found %s\n", LAST_RCVD);
433 vprint("not found\n");
434 return 0; /* The device is not a lustre target. */
437 /* Check if a certain feature is supported by e2fsprogs.
438 * Firstly we try to use "debugfs supported_features" command to check if
439 * the feature is supported. If this fails we try to set this feature with
440 * mke2fs to check for its support. */
441 static int is_e2fsprogs_feature_supp(const char *feature)
445 char imgname[] = "/tmp/test-img-XXXXXX";
449 snprintf(cmd, sizeof(cmd),
450 "debugfs -c -R \"supported_features %s\" 2>&1", feature);
452 /* Using popen() instead of run_command() since debugfs does not return
453 * proper error code if command is not supported */
454 fp = popen(cmd, "r");
456 fprintf(stderr, "%s: %s\n", progname, strerror(errno));
459 ret = fread(cmd, 1, sizeof(cmd), fp);
461 if (strstr(cmd, feature) && !(strstr(cmd, "Unknown")))
465 if ((fd = mkstemp(imgname)) < 0)
468 snprintf(cmd, sizeof(cmd), "mke2fs -F -O %s %s 100 >/dev/null 2>&1",
470 /* run_command() displays the output of mke2fs when it fails for
471 * some feature, so use system() directly */
479 static void disp_old_kernel_msg(char *feature)
481 fprintf(stderr, "WARNING: ldiskfs filesystem does not support \"%s\" "
482 "feature.\n\n", feature);
485 static void enable_default_backfs_features(struct mkfs_opts *mop)
488 int maj_high, maj_low, min;
491 strscat(mop->mo_mkfsopts, " -O dir_index", sizeof(mop->mo_mkfsopts));
493 /* Upstream e2fsprogs called our uninit_groups feature uninit_bg,
494 * check for both of them when testing e2fsprogs features. */
495 if (is_e2fsprogs_feature_supp("uninit_groups") == 0)
496 strscat(mop->mo_mkfsopts, ",uninit_groups",
497 sizeof(mop->mo_mkfsopts));
498 else if (is_e2fsprogs_feature_supp("uninit_bg") == 0)
499 strscat(mop->mo_mkfsopts, ",uninit_bg",
500 sizeof(mop->mo_mkfsopts));
502 disp_old_e2fsprogs_msg("uninit_bg", 1);
508 sscanf(uts.release, "%d.%d.%d", &maj_high, &maj_low, &min);
509 printf("%d %d %d\n", maj_high, maj_low, min);
511 /* Multiple mount protection is enabled only if failover node is
512 * specified and if kernel version is higher than 2.6.9 */
514 if (KERNEL_VERSION(maj_high, maj_low, min) >=
515 KERNEL_VERSION(2,6,9)) {
516 if (is_e2fsprogs_feature_supp("mmp") == 0)
517 strscat(mop->mo_mkfsopts, ",mmp",
518 sizeof(mop->mo_mkfsopts));
520 disp_old_e2fsprogs_msg("mmp", 1);
522 disp_old_kernel_msg("mmp");
526 /* Build fs according to type */
527 int make_lustre_backfs(struct mkfs_opts *mop)
529 char mkfs_cmd[PATH_MAX];
535 if (mop->mo_device_sz != 0) {
536 if (mop->mo_device_sz < 8096){
537 fprintf(stderr, "%s: size of filesystem must be larger "
538 "than 8MB, but is set to %lldKB\n",
539 progname, (long long)mop->mo_device_sz);
542 block_count = mop->mo_device_sz / (L_BLOCK_SIZE >> 10);
545 if ((mop->mo_ldd.ldd_mount_type == LDD_MT_EXT3) ||
546 (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS) ||
547 (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS2)) {
548 __u64 device_sz = mop->mo_device_sz;
550 /* we really need the size */
551 if (device_sz == 0) {
552 device_sz = get_device_size(mop->mo_device);
557 /* Journal size in MB */
558 if (strstr(mop->mo_mkfsopts, "-J") == NULL) {
559 /* Choose our own default journal size */
560 long journal_sz = 0, max_sz;
561 if (device_sz > 1024 * 1024) /* 1GB */
562 journal_sz = (device_sz / 102400) * 4;
563 /* cap journal size at 1GB */
564 if (journal_sz > 1024L)
567 max_sz = (256000 * L_BLOCK_SIZE) >> 20; /* 1GB */
568 if (journal_sz > max_sz)
571 sprintf(buf, " -J size=%ld", journal_sz);
572 strscat(mop->mo_mkfsopts, buf,
573 sizeof(mop->mo_mkfsopts));
577 /* Bytes_per_inode: disk size / num inodes */
578 if (strstr(mop->mo_mkfsopts, "-i") == NULL) {
579 long bytes_per_inode = 0;
581 if (IS_MDT(&mop->mo_ldd))
582 bytes_per_inode = 4096;
584 /* Allocate fewer inodes on large OST devices. Most
585 filesystems can be much more aggressive than even
587 if ((IS_OST(&mop->mo_ldd) && (device_sz > 100000000)))
588 bytes_per_inode = 16384; /* > 100 Gb device */
591 if (bytes_per_inode > 0) {
592 sprintf(buf, " -i %ld", bytes_per_inode);
593 strscat(mop->mo_mkfsopts, buf,
594 sizeof(mop->mo_mkfsopts));
598 /* Inode size (for extended attributes). The LOV EA size is
599 * 32 (EA hdr) + 32 (lov_mds_md) + stripes * 24 (lov_ost_data),
600 * and we want some margin above that for ACLs, other EAs... */
601 if (strstr(mop->mo_mkfsopts, "-I") == NULL) {
603 if (IS_MDT(&mop->mo_ldd)) {
604 if (mop->mo_stripe_count > 72)
605 inode_size = 512; /* bz 7241 */
606 /* cray stripes across all osts (>60) */
607 else if (mop->mo_stripe_count > 32)
609 else if (mop->mo_stripe_count > 10)
613 } else if (IS_OST(&mop->mo_ldd)) {
614 /* now as we store fids in EA on OST we need
615 to make inode bigger */
619 if (inode_size > 0) {
620 sprintf(buf, " -I %ld", inode_size);
621 strscat(mop->mo_mkfsopts, buf,
622 sizeof(mop->mo_mkfsopts));
627 strscat(mop->mo_mkfsopts, " -q",
628 sizeof(mop->mo_mkfsopts));
631 if (strstr(mop->mo_mkfsopts, "-O") == NULL)
632 enable_default_backfs_features(mop);
634 /* Allow reformat of full devices (as opposed to
635 partitions.) We already checked for mounted dev. */
636 strscat(mop->mo_mkfsopts, " -F", sizeof(mop->mo_mkfsopts));
638 snprintf(mkfs_cmd, sizeof(mkfs_cmd),
639 "mkfs.ext2 -j -b %d -L %s ", L_BLOCK_SIZE,
640 mop->mo_ldd.ldd_svname);
641 } else if (mop->mo_ldd.ldd_mount_type == LDD_MT_REISERFS) {
642 long journal_sz = 0; /* FIXME default journal size */
643 if (journal_sz > 0) {
644 sprintf(buf, " --journal_size %ld", journal_sz);
645 strscat(mop->mo_mkfsopts, buf,
646 sizeof(mop->mo_mkfsopts));
648 snprintf(mkfs_cmd, sizeof(mkfs_cmd), "mkreiserfs -ff ");
650 fprintf(stderr,"%s: unsupported fs type: %d (%s)\n",
651 progname, mop->mo_ldd.ldd_mount_type,
652 MT_STR(&mop->mo_ldd));
656 /* For loop device format the dev, not the filename */
657 dev = mop->mo_device;
658 if (mop->mo_flags & MO_IS_LOOP)
659 dev = mop->mo_loopdev;
661 vprint("formatting backing filesystem %s on %s\n",
662 MT_STR(&mop->mo_ldd), dev);
663 vprint("\ttarget name %s\n", mop->mo_ldd.ldd_svname);
664 vprint("\t4k blocks %d\n", block_count);
665 vprint("\toptions %s\n", mop->mo_mkfsopts);
667 /* mkfs_cmd's trailing space is important! */
668 strscat(mkfs_cmd, mop->mo_mkfsopts, sizeof(mkfs_cmd));
669 strscat(mkfs_cmd, " ", sizeof(mkfs_cmd));
670 strscat(mkfs_cmd, dev, sizeof(mkfs_cmd));
671 if (block_count != 0) {
672 sprintf(buf, " %d", block_count);
673 strscat(mkfs_cmd, buf, sizeof(mkfs_cmd));
676 vprint("mkfs_cmd = %s\n", mkfs_cmd);
677 ret = run_command(mkfs_cmd, sizeof(mkfs_cmd));
680 fprintf(stderr, "Unable to build fs %s (%d)\n", dev, ret);
685 /* ==================== Lustre config functions =============*/
687 void print_ldd(char *str, struct lustre_disk_data *ldd)
689 printf("\n %s:\n", str);
690 printf("Target: %s\n", ldd->ldd_svname);
691 if (ldd->ldd_svindex == INDEX_UNASSIGNED)
692 printf("Index: unassigned\n");
694 printf("Index: %d\n", ldd->ldd_svindex);
695 if (ldd->ldd_uuid[0])
696 printf("UUID: %s\n", (char *)ldd->ldd_uuid);
697 printf("Lustre FS: %s\n", ldd->ldd_fsname);
698 printf("Mount type: %s\n", MT_STR(ldd));
699 printf("Flags: %#x\n", ldd->ldd_flags);
700 printf(" (%s%s%s%s%s%s%s%s)\n",
701 IS_MDT(ldd) ? "MDT ":"",
702 IS_OST(ldd) ? "OST ":"",
703 IS_MGS(ldd) ? "MGS ":"",
704 ldd->ldd_flags & LDD_F_NEED_INDEX ? "needs_index ":"",
705 ldd->ldd_flags & LDD_F_VIRGIN ? "first_time ":"",
706 ldd->ldd_flags & LDD_F_UPDATE ? "update ":"",
707 ldd->ldd_flags & LDD_F_WRITECONF ? "writeconf ":"",
708 ldd->ldd_flags & LDD_F_UPGRADE14 ? "upgrade1.4 ":"");
709 printf("Persistent mount opts: %s\n", ldd->ldd_mount_opts);
710 printf("Parameters:%s\n", ldd->ldd_params);
711 if (ldd->ldd_userdata[0])
712 printf("Comment: %s\n", ldd->ldd_userdata);
716 /* Write the server config files */
717 int write_local_files(struct mkfs_opts *mop)
719 char mntpt[] = "/tmp/mntXXXXXX";
725 /* Mount this device temporarily in order to write these files */
726 if (!mkdtemp(mntpt)) {
727 fprintf(stderr, "%s: Can't create temp mount point %s: %s\n",
728 progname, mntpt, strerror(errno));
732 dev = mop->mo_device;
733 if (mop->mo_flags & MO_IS_LOOP)
734 dev = mop->mo_loopdev;
736 ret = mount(dev, mntpt, MT_STR(&mop->mo_ldd), 0, NULL);
738 fprintf(stderr, "%s: Unable to mount %s: %s\n",
739 progname, dev, strerror(errno));
741 if (errno == ENODEV) {
742 fprintf(stderr, "Is the %s module available?\n",
743 MT_STR(&mop->mo_ldd));
748 /* Set up initial directories */
749 sprintf(filepnm, "%s/%s", mntpt, MOUNT_CONFIGS_DIR);
750 ret = mkdir(filepnm, 0777);
751 if ((ret != 0) && (errno != EEXIST)) {
752 fprintf(stderr, "%s: Can't make configs dir %s (%s)\n",
753 progname, filepnm, strerror(errno));
755 } else if (errno == EEXIST) {
759 sprintf(filepnm, "%s/%s", mntpt, "ROOT");
760 ret = mkdir(filepnm, 0777);
761 if ((ret != 0) && (errno != EEXIST)) {
762 fprintf(stderr, "%s: Can't make ROOT dir %s (%s)\n",
763 progname, filepnm, strerror(errno));
765 } else if (errno == EEXIST) {
769 /* Save the persistent mount data into a file. Lustre must pre-read
770 this file to get the real mount options. */
771 vprint("Writing %s\n", MOUNT_DATA_FILE);
772 sprintf(filepnm, "%s/%s", mntpt, MOUNT_DATA_FILE);
773 filep = fopen(filepnm, "w");
775 fprintf(stderr, "%s: Unable to create %s file: %s\n",
776 progname, filepnm, strerror(errno));
779 fwrite(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
784 /* Check for upgrade */
785 if ((mop->mo_ldd.ldd_flags & (LDD_F_UPGRADE14 | LDD_F_SV_TYPE_MGS))
786 == (LDD_F_UPGRADE14 | LDD_F_SV_TYPE_MGS)) {
789 int cmdsz = sizeof(cmd);
790 vprint("Copying old logs\n");
792 /* Copy the old client log to fsname-client */
793 sprintf(filepnm, "%s/%s/%s-client",
794 mntpt, MOUNT_CONFIGS_DIR, mop->mo_ldd.ldd_fsname);
795 snprintf(cmd, cmdsz, "cp %s/%s/client %s", mntpt, MDT_LOGS_DIR,
797 ret = run_command(cmd, cmdsz);
799 fprintf(stderr, "%s: Can't copy 1.4 config %s/client "
800 "(%d)\n", progname, MDT_LOGS_DIR, ret);
801 fprintf(stderr, "mount -t ldiskfs %s somewhere, "
802 "find the client log for fs %s and "
803 "copy it manually into %s/%s-client, "
806 mop->mo_ldd.ldd_fsname, MOUNT_CONFIGS_DIR,
807 mop->mo_ldd.ldd_fsname);
811 /* We need to use the old mdt log because otherwise mdt won't
812 have complete lov if old clients connect before all
814 /* Copy the old mdt log to fsname-MDT0000 (get old
815 name from mdt_UUID) */
817 strscpy(filepnm, (char *)mop->mo_ldd.ldd_uuid, sizeof(filepnm));
818 term = strstr(filepnm, "_UUID");
821 snprintf(cmd, cmdsz, "cp %s/%s/%s %s/%s/%s",
822 mntpt, MDT_LOGS_DIR, filepnm,
823 mntpt, MOUNT_CONFIGS_DIR,
824 mop->mo_ldd.ldd_svname);
825 ret = run_command(cmd, cmdsz);
828 fprintf(stderr, "%s: Can't copy 1.4 config %s/%s "
829 "(%d)\n", progname, MDT_LOGS_DIR, filepnm, ret);
830 fprintf(stderr, "mount -t ext3 %s somewhere, "
831 "find the MDT log for fs %s and "
832 "copy it manually into %s/%s, "
835 mop->mo_ldd.ldd_fsname, MOUNT_CONFIGS_DIR,
836 mop->mo_ldd.ldd_svname);
851 int read_local_files(struct mkfs_opts *mop)
853 char tmpdir[] = "/tmp/dirXXXXXX";
859 int cmdsz = sizeof(cmd);
861 /* Make a temporary directory to hold Lustre data files. */
862 if (!mkdtemp(tmpdir)) {
863 fprintf(stderr, "%s: Can't create temporary directory %s: %s\n",
864 progname, tmpdir, strerror(errno));
868 dev = mop->mo_device;
870 /* TODO: it's worth observing the get_mountdata() function that is
871 in mount_utils.c for getting the mountdata out of the
874 /* Construct debugfs command line. */
875 snprintf(cmd, cmdsz, "debugfs -c -R 'dump /%s %s/mountdata' %s",
876 MOUNT_DATA_FILE, tmpdir, dev);
878 ret = run_command(cmd, cmdsz);
880 verrprint("%s: Unable to dump %s dir (%d)\n",
881 progname, MOUNT_CONFIGS_DIR, ret);
883 sprintf(filepnm, "%s/mountdata", tmpdir);
884 filep = fopen(filepnm, "r");
886 vprint("Reading %s\n", MOUNT_DATA_FILE);
887 fread(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
890 /* Try to read pre-1.6 config from last_rcvd */
891 struct lr_server_data lsd;
892 verrprint("%s: Unable to read %d.%d config %s.\n",
893 progname, LUSTRE_MAJOR, LUSTRE_MINOR, filepnm);
895 verrprint("Trying 1.4 config from last_rcvd\n");
896 sprintf(filepnm, "%s/%s", tmpdir, LAST_RCVD);
898 /* Construct debugfs command line. */
899 snprintf(cmd, cmdsz, "debugfs -c -R 'dump /%s %s' %s",
900 LAST_RCVD, filepnm, dev);
902 ret = run_command(cmd, cmdsz);
904 fprintf(stderr, "%s: Unable to dump %s file (%d)\n",
905 progname, LAST_RCVD, ret);
909 filep = fopen(filepnm, "r");
911 fprintf(stderr, "%s: Unable to open %s: %s\n",
912 progname, filepnm, strerror(errno));
914 verrprint("Contents of %s:\n", tmpdir);
916 snprintf(cmd, cmdsz, "ls -l %s/", tmpdir);
917 run_command(cmd, cmdsz);
918 verrprint("Contents of disk:\n");
919 snprintf(cmd, cmdsz, "debugfs -c -R 'ls -l /' %s", dev);
920 run_command(cmd, cmdsz);
924 vprint("Reading %s\n", LAST_RCVD);
925 ret = fread(&lsd, 1, sizeof(lsd), filep);
926 if (ret < sizeof(lsd)) {
927 fprintf(stderr, "%s: Short read (%d of %d)\n",
928 progname, ret, (int)sizeof(lsd));
933 vprint("Feature compat=%x, incompat=%x\n",
934 lsd.lsd_feature_compat, lsd.lsd_feature_incompat);
936 if ((lsd.lsd_feature_compat & OBD_COMPAT_OST) ||
937 (lsd.lsd_feature_incompat & OBD_INCOMPAT_OST)) {
938 mop->mo_ldd.ldd_flags = LDD_F_SV_TYPE_OST;
939 mop->mo_ldd.ldd_svindex = lsd.lsd_ost_index;
940 } else if ((lsd.lsd_feature_compat & OBD_COMPAT_MDT) ||
941 (lsd.lsd_feature_incompat & OBD_INCOMPAT_MDT)) {
942 /* We must co-locate so mgs can see old logs.
943 If user doesn't want this, they can copy the old
944 logs manually and re-tunefs. */
945 mop->mo_ldd.ldd_flags =
946 LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_MGS;
947 mop->mo_ldd.ldd_svindex = lsd.lsd_mdt_index;
949 /* If neither is set, we're pre-1.4.6, make a guess. */
950 /* Construct debugfs command line. */
951 snprintf(cmd, cmdsz, "debugfs -c -R 'rdump /%s %s' %s",
952 MDT_LOGS_DIR, tmpdir, dev);
953 run_command(cmd, cmdsz);
955 sprintf(filepnm, "%s/%s", tmpdir, MDT_LOGS_DIR);
956 if (lsd.lsd_ost_index > 0) {
957 mop->mo_ldd.ldd_flags = LDD_F_SV_TYPE_OST;
958 mop->mo_ldd.ldd_svindex = lsd.lsd_ost_index;
960 /* If there's a LOGS dir, it's an MDT */
961 if ((ret = access(filepnm, F_OK)) == 0) {
962 mop->mo_ldd.ldd_flags =
965 /* Old MDT's are always index 0
967 mop->mo_ldd.ldd_svindex = 0;
969 /* The index may not be correct */
970 mop->mo_ldd.ldd_flags =
971 LDD_F_SV_TYPE_OST | LDD_F_NEED_INDEX;
972 verrprint("OST with unknown index\n");
978 memcpy(mop->mo_ldd.ldd_uuid, lsd.lsd_uuid,
979 sizeof(mop->mo_ldd.ldd_uuid));
980 mop->mo_ldd.ldd_flags |= LDD_F_UPGRADE14;
987 snprintf(cmd, cmdsz, "rm -rf %s", tmpdir);
988 run_command(cmd, cmdsz);
990 verrprint("Failed to read old data (%d)\n", ret);
995 void set_defaults(struct mkfs_opts *mop)
997 mop->mo_ldd.ldd_magic = LDD_MAGIC;
998 mop->mo_ldd.ldd_config_ver = 1;
999 mop->mo_ldd.ldd_flags = LDD_F_NEED_INDEX | LDD_F_UPDATE | LDD_F_VIRGIN;
1000 mop->mo_mgs_failnodes = 0;
1001 strcpy(mop->mo_ldd.ldd_fsname, "lustre");
1002 if (get_os_version() == 24)
1003 mop->mo_ldd.ldd_mount_type = LDD_MT_EXT3;
1005 mop->mo_ldd.ldd_mount_type = LDD_MT_LDISKFS;
1007 mop->mo_ldd.ldd_svindex = INDEX_UNASSIGNED;
1008 mop->mo_stripe_count = 1;
1011 static inline void badopt(const char *opt, char *type)
1013 fprintf(stderr, "%s: '--%s' only valid for %s\n",
1014 progname, opt, type);
1018 static int add_param(char *buf, char *key, char *val)
1020 int end = sizeof(((struct lustre_disk_data *)0)->ldd_params);
1021 int start = strlen(buf);
1025 keylen = strlen(key);
1026 if (start + 1 + keylen + strlen(val) >= end) {
1027 fprintf(stderr, "%s: params are too long-\n%s %s%s\n",
1028 progname, buf, key ? key : "", val);
1032 sprintf(buf + start, " %s%s", key ? key : "", val);
1036 /* from mount_lustre */
1037 /* Get rid of symbolic hostnames for tcp, since kernel can't do lookups */
1038 #define MAXNIDSTR 1024
1039 static char *convert_hostnames(char *s1)
1041 char *converted, *s2 = 0, *c;
1042 int left = MAXNIDSTR;
1045 converted = malloc(left);
1046 if (converted == NULL) {
1051 while ((left > 0) && ((s2 = strsep(&s1, ",: \0")))) {
1052 nid = libcfs_str2nid(s2);
1053 if (nid == LNET_NID_ANY) {
1057 fprintf(stderr, "%s: Can't parse NID '%s'\n",
1063 if (strncmp(libcfs_nid2str(nid), "127.0.0.1",
1064 strlen("127.0.0.1")) == 0) {
1065 fprintf(stderr, "%s: The NID '%s' resolves to the "
1066 "loopback address '%s'. Lustre requires a "
1067 "non-loopback address.\n",
1068 progname, s2, libcfs_nid2str(nid));
1073 c += snprintf(c, left, "%s,", libcfs_nid2str(nid));
1074 left = converted + MAXNIDSTR - c;
1080 int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
1083 static struct option long_opt[] = {
1084 {"backfstype", 1, 0, 'b'},
1085 {"stripe-count-hint", 1, 0, 'c'},
1086 {"comment", 1, 0, 'u'},
1087 {"configdev", 1, 0, 'C'},
1088 {"device-size", 1, 0, 'd'},
1089 {"dryrun", 0, 0, 'n'},
1090 {"erase-params", 0, 0, 'e'},
1091 {"failnode", 1, 0, 'f'},
1092 {"failover", 1, 0, 'f'},
1094 {"help", 0, 0, 'h'},
1095 {"index", 1, 0, 'i'},
1096 {"mkfsoptions", 1, 0, 'k'},
1097 {"mgsnode", 1, 0, 'm'},
1098 {"mgsnid", 1, 0, 'm'},
1100 {"fsname",1, 0, 'L'},
1101 {"noformat", 0, 0, 'n'},
1102 {"nomgs", 0, 0, 'N'},
1103 {"mountfsoptions", 1, 0, 'o'},
1105 {"param", 1, 0, 'p'},
1106 {"print", 0, 0, 'n'},
1107 {"quiet", 0, 0, 'q'},
1108 {"reformat", 0, 0, 'r'},
1109 {"verbose", 0, 0, 'v'},
1110 {"writeconf", 0, 0, 'w'},
1113 char *optstring = "b:c:C:d:ef:Ghi:k:L:m:MnNo:Op:Pqru:vw";
1117 while ((opt = getopt_long(argc, argv, optstring, long_opt, &longidx)) !=
1122 while (i < LDD_MT_LAST) {
1123 if (strcmp(optarg, mt_str(i)) == 0) {
1124 mop->mo_ldd.ldd_mount_type = i;
1132 if (IS_MDT(&mop->mo_ldd)) {
1133 int stripe_count = atol(optarg);
1134 if (stripe_count <= 0) {
1135 fprintf(stderr, "%s: bad stripe count "
1136 "%d\n", progname, stripe_count);
1139 mop->mo_stripe_count = stripe_count;
1141 badopt(long_opt[longidx].name, "MDT");
1145 case 'C': /* Configdev */
1147 printf("Configdev not implemented\n");
1150 mop->mo_device_sz = atol(optarg);
1153 mop->mo_ldd.ldd_params[0] = '\0';
1154 /* Must update the mgs logs */
1155 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1158 char *nids = convert_hostnames(optarg);
1161 rc = add_param(mop->mo_ldd.ldd_params, PARAM_FAILNODE,
1166 /* Must update the mgs logs */
1167 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1172 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_MGS;
1178 if (!(mop->mo_ldd.ldd_flags &
1179 (LDD_F_UPGRADE14 | LDD_F_VIRGIN |
1180 LDD_F_WRITECONF))) {
1181 fprintf(stderr, "%s: cannot change the index of"
1182 " a registered target\n", progname);
1185 if (IS_MDT(&mop->mo_ldd) || IS_OST(&mop->mo_ldd)) {
1186 mop->mo_ldd.ldd_svindex = atol(optarg);
1187 mop->mo_ldd.ldd_flags &= ~LDD_F_NEED_INDEX;
1189 badopt(long_opt[longidx].name, "MDT,OST");
1194 strscpy(mop->mo_mkfsopts, optarg,
1195 sizeof(mop->mo_mkfsopts));
1199 if (!(mop->mo_flags & MO_FORCEFORMAT) &&
1200 (!(mop->mo_ldd.ldd_flags &
1201 (LDD_F_UPGRADE14 | LDD_F_VIRGIN |
1202 LDD_F_WRITECONF)))) {
1203 fprintf(stderr, "%s: cannot change the name of"
1204 " a registered target\n", progname);
1207 if ((strlen(optarg) < 1) || (strlen(optarg) > 8)) {
1208 fprintf(stderr, "%s: filesystem name must be "
1209 "1-8 chars\n", progname);
1212 if ((tmp = strpbrk(optarg, "/:"))) {
1213 fprintf(stderr, "%s: char '%c' not allowed in "
1214 "filesystem name\n", progname, *tmp);
1217 strscpy(mop->mo_ldd.ldd_fsname, optarg,
1218 sizeof(mop->mo_ldd.ldd_fsname));
1222 char *nids = convert_hostnames(optarg);
1225 rc = add_param(mop->mo_ldd.ldd_params, PARAM_MGSNODE,
1230 mop->mo_mgs_failnodes++;
1234 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_MDT;
1240 mop->mo_ldd.ldd_flags &= ~LDD_F_SV_TYPE_MGS;
1243 *mountopts = optarg;
1246 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_OST;
1249 rc = add_param(mop->mo_ldd.ldd_params, NULL, optarg);
1252 /* Must update the mgs logs */
1253 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1259 mop->mo_flags |= MO_FORCEFORMAT;
1262 strscpy(mop->mo_ldd.ldd_userdata, optarg,
1263 sizeof(mop->mo_ldd.ldd_userdata));
1269 mop->mo_ldd.ldd_flags |= LDD_F_WRITECONF;
1274 fprintf(stderr, "Unknown option '%c'\n", opt);
1280 /* Last arg is device */
1281 if (optind != argc - 1) {
1283 fprintf(stderr, "Bad argument: %s\n", argv[optind]);
1290 #include <lustre/libiam.h>
1292 #define LDISKFS_IOC_GETVERSION _IOR('f', 3, long)
1294 #ifndef TUNEFS /* mkfs.lustre */
1295 static int mkfs_iam_insert(int key_need_convert, char *keybuf,
1296 int rec_need_convert, char *recbuf, char *filename)
1300 struct iam_uapi_info ua;
1302 fd = iam_open(filename, &ua);
1304 fprintf(stderr, "failed to iam_open %s\n", filename);
1308 ret = iam_insert(fd, &ua,
1309 key_need_convert, keybuf,
1310 rec_need_convert, recbuf);
1313 fprintf(stderr, "failed to iam_insert %s\n", filename);
1320 static int touch_file(char *filename)
1324 if (filename == NULL) {
1328 fd = open(filename, O_CREAT | O_TRUNC, 0600);
1337 static int get_generation(char *filename, unsigned long *result)
1342 if (filename == NULL) {
1346 fd = open(filename, O_RDONLY);
1348 fprintf(stderr, "%s: failed to open %s\n",
1349 __FUNCTION__, filename);
1353 ret = ioctl(fd, LDISKFS_IOC_GETVERSION, result);
1356 return ((ret < 0) ? ret : 0);
1359 static int mkfs_mdt(struct mkfs_opts *mop)
1361 char mntpt[] = "/tmp/mntXXXXXX";
1362 char fstype[] = "ldiskfs";
1367 unsigned long generation;
1370 source = mop->mo_device;
1371 if (mop->mo_flags & MO_IS_LOOP) {
1372 source = mop->mo_loopdev;
1375 if ((source == NULL) || (*source == 0)) {
1379 if (!mkdtemp(mntpt)) {
1380 fprintf(stderr, "%s: failed to mkdtemp %s\n",
1381 __FUNCTION__, mntpt);
1385 ret = mount(source, mntpt, fstype, 0, NULL);
1390 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "seq_ctl");
1391 ret = touch_file(filepnm);
1396 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "seq_srv");
1397 ret = touch_file(filepnm);
1402 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "last_received");
1403 ret = touch_file(filepnm);
1408 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "lov_objid");
1409 ret = touch_file(filepnm);
1414 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "root");
1415 ret = iam_creat(filepnm, FMT_LVAR, L_BLOCK_SIZE, 4, 17, 4);
1420 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "fld");
1421 ret = iam_creat(filepnm, FMT_LFIX, L_BLOCK_SIZE, 8, 8, 4);
1426 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "orphans");
1427 ret = iam_creat(filepnm, FMT_LFIX, L_BLOCK_SIZE, 20, 8, 4);
1432 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "oi.16");
1433 ret = iam_creat(filepnm, FMT_LFIX, L_BLOCK_SIZE, 16, 8, 4);
1438 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "oi.5");
1439 ret = iam_creat(filepnm, FMT_LFIX, L_BLOCK_SIZE, 5, 8, 4);
1444 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, CAPA_KEYS);
1445 ret = touch_file(filepnm);
1451 ret = mount(source, mntpt, fstype, 0, NULL);
1456 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "root");
1457 ret = iam_polymorph(filepnm, 040755);
1459 perror("IAM_IOC_POLYMORPH");
1464 ret = mount(source, mntpt, fstype, 0, NULL);
1469 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "fld");
1470 ret = mkfs_iam_insert(1, "0000000000000002", 1, "0000000000000000", filepnm);
1475 ret = mkfs_iam_insert(1, "0000000000000001", 1, "0000000000000000", filepnm);
1480 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "root");
1481 ret = stat(filepnm, &st);
1486 ret = get_generation(filepnm, &generation);
1491 snprintf(recbuf, sizeof(recbuf) - 1, "110000000000000001%8.8x%8.8x",
1492 (unsigned int)st.st_ino, (unsigned int)generation);
1493 ret = mkfs_iam_insert(0, ".", 1, recbuf, filepnm);
1498 ret = mkfs_iam_insert(0, "..", 1, recbuf, filepnm);
1511 int main(int argc, char *const argv[])
1513 struct mkfs_opts mop;
1514 struct lustre_disk_data *ldd;
1515 char *mountopts = NULL;
1516 char always_mountopts[512] = "";
1517 char default_mountopts[512] = "";
1520 if ((progname = strrchr(argv[0], '/')) != NULL)
1525 if ((argc < 2) || (argv[argc - 1][0] == '-')) {
1530 memset(&mop, 0, sizeof(mop));
1533 /* device is last arg */
1534 strscpy(mop.mo_device, argv[argc - 1], sizeof(mop.mo_device));
1536 /* Are we using a loop device? */
1537 ret = is_block(mop.mo_device);
1541 mop.mo_flags |= MO_IS_LOOP;
1544 /* For tunefs, we must read in the old values before parsing any
1547 /* Check whether the disk has already been formatted by mkfs.lustre */
1548 ret = is_lustre_target(&mop);
1551 fprintf(stderr, "Device %s has not been formatted with "
1552 "mkfs.lustre\n", mop.mo_device);
1557 ret = read_local_files(&mop);
1560 fprintf(stderr, "Failed to read previous Lustre data from %s "
1561 "(%d)\n", mop.mo_device, ret);
1564 if (strstr(mop.mo_ldd.ldd_params, PARAM_MGSNODE))
1565 mop.mo_mgs_failnodes++;
1568 print_ldd("Read previous values", &(mop.mo_ldd));
1571 ret = parse_opts(argc, argv, &mop, &mountopts);
1577 if (!(IS_MDT(ldd) || IS_OST(ldd) || IS_MGS(ldd))) {
1579 fprintf(stderr, "must set target type: MDT,OST,MGS\n");
1584 if (((IS_MDT(ldd) || IS_MGS(ldd))) && IS_OST(ldd)) {
1586 fprintf(stderr, "OST type is exclusive with MDT,MGS\n");
1591 if ((mop.mo_ldd.ldd_flags & (LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) ==
1592 (LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) {
1594 fprintf(stderr, "Can't find the target index, "
1595 "specify with --index\n");
1601 * Comment out these 2 checks temporarily, since for multi-MDSes
1602 * in single node only 1 mds node could have mgs service
1604 if (IS_MDT(ldd) && !IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
1605 verrprint("No management node specified, adding MGS to this "
1607 ldd->ldd_flags |= LDD_F_SV_TYPE_MGS;
1609 if (!IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
1612 fprintf(stderr, "Must specify --mgs or --mgsnode=\n");
1614 fprintf(stderr, "Must specify --mgsnode=\n");
1620 /* These are the permanent mount options (always included) */
1621 switch (ldd->ldd_mount_type) {
1623 case LDD_MT_LDISKFS:
1624 case LDD_MT_LDISKFS2: {
1625 sprintf(always_mountopts, "errors=remount-ro");
1626 if (IS_MDT(ldd) || IS_MGS(ldd))
1627 strscat(always_mountopts, ",iopen_nopriv,user_xattr",
1628 sizeof(always_mountopts));
1629 if ((get_os_version() == 24) && IS_OST(ldd))
1630 strscat(always_mountopts, ",asyncdel",
1631 sizeof(always_mountopts));
1632 /* NB: Files created while extents are enabled cannot be read
1633 if mounted with a kernel that doesn't include the CFS
1636 (ldd->ldd_mount_type == LDD_MT_LDISKFS ||
1637 ldd->ldd_mount_type == LDD_MT_LDISKFS2)) {
1638 strscat(default_mountopts, ",extents,mballoc",
1639 sizeof(default_mountopts));
1644 mop.mo_flags |= MO_IS_LOOP;
1645 sprintf(always_mountopts, "type=ext3,dev=%s",
1651 fprintf(stderr, "unknown fs type %d '%s'\n",
1652 ldd->ldd_mount_type,
1660 /* If user specifies mount opts, don't use defaults,
1661 but always use always_mountopts */
1662 sprintf(ldd->ldd_mount_opts, "%s,%s",
1663 always_mountopts, mountopts);
1666 if (ldd->ldd_mount_opts[0] == 0)
1667 /* use the defaults unless old opts exist */
1670 sprintf(ldd->ldd_mount_opts, "%s%s",
1671 always_mountopts, default_mountopts);
1675 server_make_name(ldd->ldd_flags, ldd->ldd_svindex,
1676 ldd->ldd_fsname, ldd->ldd_svname);
1679 print_ldd("Permanent disk data", ldd);
1682 printf("exiting before disk write.\n");
1686 if (check_mtab_entry(mop.mo_device))
1689 /* Create the loopback file */
1690 if (mop.mo_flags & MO_IS_LOOP) {
1691 ret = access(mop.mo_device, F_OK);
1694 #ifndef TUNEFS /* mkfs.lustre */
1695 /* Reformat the loopback file */
1696 if (ret || (mop.mo_flags & MO_FORCEFORMAT))
1697 ret = loop_format(&mop);
1700 ret = loop_setup(&mop);
1703 fprintf(stderr, "Loop device setup for %s failed: %s\n",
1704 mop.mo_device, strerror(ret));
1709 #ifndef TUNEFS /* mkfs.lustre */
1710 /* Check whether the disk has already been formatted by mkfs.lustre */
1711 if (!(mop.mo_flags & MO_FORCEFORMAT)) {
1712 ret = is_lustre_target(&mop);
1715 fprintf(stderr, "Device %s was previously formatted "
1716 "for lustre. Use --reformat to reformat it, "
1717 "or tunefs.lustre to modify.\n",
1723 /* Format the backing filesystem */
1724 ret = make_lustre_backfs(&mop);
1727 fprintf(stderr, "mkfs failed %d\n", ret);
1732 /* Write our config files */
1733 ret = write_local_files(&mop);
1736 fprintf(stderr, "failed to write local files\n");
1740 #ifndef TUNEFS /* mkfs.lustre */
1742 ret = mkfs_mdt(&mop);
1744 fprintf(stderr, "failed to mkfs_mdt\n");
1753 /* Fix any crazy return values from system() */
1754 if (ret && ((ret & 255) == 0))
1757 verrprint("%s: exiting with %d (%s)\n",
1758 progname, ret, strerror(ret));