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 */
35 #include <sys/types.h>
37 #include <sys/mount.h>
38 #include <sys/utsname.h>
45 /* libcfs.h is not really needed here, but on SLES10/PPC, fs.h includes idr.h which
46 * requires BITS_PER_LONG to be defined */
47 #include <libcfs/libcfs.h>
48 #include <linux/fs.h> /* for BLKGETSIZE64 */
49 #include <linux/version.h>
51 #include <lustre_disk.h>
52 #include <lustre_param.h>
53 #include <lnet/lnetctl.h>
54 #include <lustre_ver.h>
55 #include "mount_utils.h"
61 #define MAX_LOOP_DEVICES 16
62 #define L_BLOCK_SIZE 4096
63 #define INDEX_UNASSIGNED 0xFFFF
64 #define MO_IS_LOOP 0x01
65 #define MO_FORCEFORMAT 0x02
67 /* used to describe the options to format the lustre disk, not persistent */
69 struct lustre_disk_data mo_ldd; /* to be written in MOUNT_DATA_FILE */
70 char mo_device[128]; /* disk device name */
71 char mo_mkfsopts[128]; /* options to the backing-store mkfs */
72 char mo_loopdev[128]; /* in case a loop dev is needed */
73 __u64 mo_device_sz; /* in KB */
81 static int print_only = 0;
82 static int failover = 0;
86 fprintf(out, "%s v"LUSTRE_VERSION_STRING"\n", progname);
87 fprintf(out, "usage: %s <target types> [options] <device>\n", progname);
89 "\t<device>:block device or file (e.g /dev/sda or /tmp/ost1)\n"
91 "\t\t--ost: object storage, mutually exclusive with mdt,mgs\n"
92 "\t\t--mdt: metadata storage, mutually exclusive with ost\n"
93 "\t\t--mgs: configuration management service - one per site\n"
94 "\toptions (in order of popularity):\n"
95 "\t\t--mgsnode=<nid>[,<...>] : NID(s) of a remote mgs node\n"
96 "\t\t\trequired for all targets other than the mgs node\n"
97 "\t\t--fsname=<filesystem_name> : default is 'lustre'\n"
98 "\t\t--failnode=<nid>[,<...>] : NID(s) of a failover partner\n"
99 "\t\t--param <key>=<value> : set a permanent parameter\n"
100 "\t\t\te.g. --param sys.timeout=40\n"
101 "\t\t\t --param lov.stripesize=2M\n"
102 "\t\t--index=#N : target index (i.e. ost index within the lov)\n"
103 /* FIXME implement 1.6.x
104 "\t\t--configdev=<altdevice|file>: store configuration info\n"
105 "\t\t\tfor this device on an alternate device\n"
107 "\t\t--comment=<user comment>: arbitrary user string (%d bytes)\n"
108 "\t\t--mountfsoptions=<opts> : permanent mount options\n"
110 "\t\t--backfstype=<fstype> : backing fs type (ext3, ldiskfs)\n"
111 "\t\t--device-size=#N(KB) : device size for loop devices\n"
112 "\t\t--mkfsoptions=<opts> : format options\n"
113 "\t\t--reformat: overwrite an existing disk\n"
114 "\t\t--stripe-count-hint=#N : used for optimizing MDT inode size\n"
116 "\t\t--erase-params : erase all old parameter settings\n"
117 "\t\t--nomgs: turn off MGS service on this MDT\n"
118 "\t\t--writeconf: erase all config logs for this fs.\n"
120 "\t\t--dryrun: just report what we would do; "
121 "don't write to disk\n"
122 "\t\t--verbose : e.g. show mkfs progress\n"
124 (int)sizeof(((struct lustre_disk_data *)0)->ldd_userdata));
128 #define vprint if (verbose > 0) printf
129 #define verrprint if (verbose >= 0) printf
131 /*================ utility functions =====================*/
133 char *strscat(char *dst, char *src, int buflen) {
135 if (strlen(dst) + strlen(src) >= buflen) {
136 fprintf(stderr, "string buffer overflow (max %d): '%s' + '%s'"
137 "\n", buflen, dst, src);
140 return strcat(dst, src);
144 char *strscpy(char *dst, char *src, int buflen) {
146 return strscat(dst, src, buflen);
150 dev_major (unsigned long long int __dev)
152 return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff);
156 dev_minor (unsigned long long int __dev)
158 return (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff);
163 static int version = 0;
167 char release[4] = "";
169 fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
171 fprintf(stderr, "%s: Warning: Can't resolve kernel "
172 "version, assuming 2.6\n", progname);
174 read(fd, release, 4);
177 if (strncmp(release, "2.4.", 4) == 0)
185 static int check_mtab_entry(char *spec)
190 fp = setmntent(MOUNTED, "r");
194 while ((mnt = getmntent(fp)) != NULL) {
195 if (strcmp(mnt->mnt_fsname, spec) == 0) {
197 fprintf(stderr, "%s: according to %s %s is "
198 "already mounted on %s\n",
199 progname, MOUNTED, spec, mnt->mnt_dir);
208 /*============ disk dev functions ===================*/
210 /* Setup a file in the first unused loop_device */
211 int loop_setup(struct mkfs_opts *mop)
217 /* Figure out the loop device names */
218 if (!access("/dev/loop0", F_OK | R_OK)) {
219 strcpy(loop_base, "/dev/loop\0");
220 } else if (!access("/dev/loop/0", F_OK | R_OK)) {
221 strcpy(loop_base, "/dev/loop/\0");
223 fprintf(stderr, "%s: can't access loop devices\n", progname);
227 /* Find unused loop device */
228 for (i = 0; i < MAX_LOOP_DEVICES; i++) {
230 int cmdsz = sizeof(cmd);
232 sprintf(l_device, "%s%d", loop_base, i);
233 if (access(l_device, F_OK | R_OK))
235 snprintf(cmd, cmdsz, "losetup %s > /dev/null 2>&1", l_device);
238 /* losetup gets 1 (ret=256) for non-set-up device */
240 /* Set up a loopback device to our file */
241 snprintf(cmd, cmdsz, "losetup %s %s", l_device,
243 ret = run_command(cmd, cmdsz);
245 fprintf(stderr, "%s: error %d on losetup: %s\n",
246 progname, ret, strerror(ret));
249 strscpy(mop->mo_loopdev, l_device,
250 sizeof(mop->mo_loopdev));
255 fprintf(stderr, "%s: out of loop devices!\n", progname);
259 int loop_cleanup(struct mkfs_opts *mop)
263 if ((mop->mo_flags & MO_IS_LOOP) && *mop->mo_loopdev) {
264 sprintf(cmd, "losetup -d %s", mop->mo_loopdev);
265 ret = run_command(cmd, sizeof(cmd));
270 /* Determine if a device is a block device (as opposed to a file) */
271 int is_block(char* devname)
276 ret = access(devname, F_OK);
279 ret = stat(devname, &st);
281 fprintf(stderr, "%s: cannot stat %s\n", progname, devname);
284 return S_ISBLK(st.st_mode);
287 __u64 get_device_size(char* device)
292 fd = open(device, O_RDONLY);
294 fprintf(stderr, "%s: cannot open %s: %s\n",
295 progname, device, strerror(errno));
300 /* size in bytes. bz5831 */
301 ret = ioctl(fd, BLKGETSIZE64, (void*)&size);
306 ret = ioctl(fd, BLKGETSIZE, (void*)&lsize);
307 size = (__u64)lsize * 512;
312 fprintf(stderr, "%s: size ioctl failed: %s\n",
313 progname, strerror(errno));
317 vprint("device size = "LPU64"MB\n", size >> 20);
318 /* return value in KB */
322 int loop_format(struct mkfs_opts *mop)
326 if (mop->mo_device_sz == 0) {
328 fprintf(stderr, "loop device requires a --device-size= "
333 ret = creat(mop->mo_device, S_IRUSR|S_IWUSR);
336 fprintf(stderr, "%s: Unable to create backing store: %d\n",
342 ret = truncate(mop->mo_device, mop->mo_device_sz * 1024);
345 fprintf(stderr, "%s: Unable to truncate backing store: %d\n",
352 /* Display the need for the latest e2fsprogs to be installed. make_backfs
353 * indicates if the caller is make_lustre_backfs() or not. */
354 static void disp_old_e2fsprogs_msg(const char *feature, int make_backfs)
356 static int msg_displayed;
359 fprintf(stderr, "WARNING: e2fsprogs does not support %s "
360 "feature.\n\n", feature);
366 fprintf(stderr, "WARNING: The e2fsprogs package currently installed on "
367 "your system does not support \"%s\" feature.\nPlease install "
368 "the latest version of e2fsprogs from http://www.clusterfs.com/"
369 "downloads/public/Lustre/Tools/e2fsprogs/\nto enable this "
370 "feature.\n", feature);
373 fprintf(stderr, "Feature will not be enabled until e2fsprogs "
374 "is updated and 'tune2fs -O %s %%{device}' "
375 "is run.\n\n", feature);
378 /* Check whether the file exists in the device */
379 static int file_in_dev(char *file_name, char *dev_name)
382 char debugfs_cmd[256];
383 unsigned int inode_num;
386 /* Construct debugfs command line. */
387 snprintf(debugfs_cmd, sizeof(debugfs_cmd),
388 "debugfs -c -R 'stat %s' %s 2>&1 | egrep '(Inode|unsupported)'",
389 file_name, dev_name);
391 fp = popen(debugfs_cmd, "r");
393 fprintf(stderr, "%s: %s\n", progname, strerror(errno));
397 if (fscanf(fp, "Inode: %u", &inode_num) == 1) { /* exist */
401 i = fread(debugfs_cmd, 1, sizeof(debugfs_cmd), fp);
404 fprintf(stderr, "%s", debugfs_cmd);
405 if (strstr(debugfs_cmd, "unsupported feature")) {
406 disp_old_e2fsprogs_msg("an unknown", 0);
415 /* Check whether the device has already been used with lustre */
416 static int is_lustre_target(struct mkfs_opts *mop)
420 vprint("checking for existing Lustre data: ");
422 if ((rc = file_in_dev(MOUNT_DATA_FILE, mop->mo_device))) {
424 (rc == 1) ? MOUNT_DATA_FILE : "extents");
425 /* in the -1 case, 'extents' means this really IS a lustre
430 if ((rc = file_in_dev(LAST_RCVD, mop->mo_device))) {
431 vprint("found %s\n", LAST_RCVD);
435 vprint("not found\n");
436 return 0; /* The device is not a lustre target. */
439 /* Check if a certain feature is supported by e2fsprogs.
440 * Firstly we try to use "debugfs supported_features" command to check if
441 * the feature is supported. If this fails we try to set this feature with
442 * mke2fs to check for its support. */
443 static int is_e2fsprogs_feature_supp(const char *feature)
447 char imgname[] = "/tmp/test-img-XXXXXX";
451 snprintf(cmd, sizeof(cmd),
452 "debugfs -c -R \"supported_features %s\" 2>&1", feature);
454 /* Using popen() instead of run_command() since debugfs does not return
455 * proper error code if command is not supported */
456 fp = popen(cmd, "r");
458 fprintf(stderr, "%s: %s\n", progname, strerror(errno));
461 ret = fread(cmd, 1, sizeof(cmd), fp);
463 if (strstr(cmd, feature) && !(strstr(cmd, "Unknown")))
467 if ((fd = mkstemp(imgname)) < 0)
470 snprintf(cmd, sizeof(cmd), "mke2fs -F -O %s %s 100 >/dev/null 2>&1",
472 /* run_command() displays the output of mke2fs when it fails for
473 * some feature, so use system() directly */
481 static void disp_old_kernel_msg(char *feature)
483 fprintf(stderr, "WARNING: ldiskfs filesystem does not support \"%s\" "
484 "feature.\n\n", feature);
487 static void enable_default_backfs_features(struct mkfs_opts *mop)
490 int maj_high, maj_low, min;
493 strscat(mop->mo_mkfsopts, " -O dir_index", sizeof(mop->mo_mkfsopts));
495 /* Upstream e2fsprogs called our uninit_groups feature uninit_bg,
496 * check for both of them when testing e2fsprogs features. */
497 if (is_e2fsprogs_feature_supp("uninit_groups") == 0)
498 strscat(mop->mo_mkfsopts, ",uninit_groups",
499 sizeof(mop->mo_mkfsopts));
500 else if (is_e2fsprogs_feature_supp("uninit_bg") == 0)
501 strscat(mop->mo_mkfsopts, ",uninit_bg",
502 sizeof(mop->mo_mkfsopts));
504 disp_old_e2fsprogs_msg("uninit_bg", 1);
510 sscanf(uts.release, "%d.%d.%d", &maj_high, &maj_low, &min);
511 printf("%d %d %d\n", maj_high, maj_low, min);
513 /* Multiple mount protection is enabled only if failover node is
514 * specified and if kernel version is higher than 2.6.9 */
516 if (KERNEL_VERSION(maj_high, maj_low, min) >=
517 KERNEL_VERSION(2,6,9)) {
518 if (is_e2fsprogs_feature_supp("mmp") == 0)
519 strscat(mop->mo_mkfsopts, ",mmp",
520 sizeof(mop->mo_mkfsopts));
522 disp_old_e2fsprogs_msg("mmp", 1);
524 disp_old_kernel_msg("mmp");
528 /* Build fs according to type */
529 int make_lustre_backfs(struct mkfs_opts *mop)
531 char mkfs_cmd[PATH_MAX];
537 if (mop->mo_device_sz != 0) {
538 if (mop->mo_device_sz < 8096){
539 fprintf(stderr, "%s: size of filesystem must be larger "
540 "than 8MB, but is set to %lldKB\n",
541 progname, (long long)mop->mo_device_sz);
544 block_count = mop->mo_device_sz / (L_BLOCK_SIZE >> 10);
547 if ((mop->mo_ldd.ldd_mount_type == LDD_MT_EXT3) ||
548 (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS) ||
549 (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS2)) {
550 __u64 device_sz = mop->mo_device_sz;
552 /* we really need the size */
553 if (device_sz == 0) {
554 device_sz = get_device_size(mop->mo_device);
559 /* Journal size in MB */
560 if (strstr(mop->mo_mkfsopts, "-J") == NULL) {
561 /* Choose our own default journal size */
562 long journal_sz = 0, max_sz;
563 if (device_sz > 1024 * 1024) /* 1GB */
564 journal_sz = (device_sz / 102400) * 4;
565 /* cap journal size at 1GB */
566 if (journal_sz > 1024L)
569 max_sz = (256000 * L_BLOCK_SIZE) >> 20; /* 1GB */
570 if (journal_sz > max_sz)
573 sprintf(buf, " -J size=%ld", journal_sz);
574 strscat(mop->mo_mkfsopts, buf,
575 sizeof(mop->mo_mkfsopts));
579 /* Bytes_per_inode: disk size / num inodes */
580 if (strstr(mop->mo_mkfsopts, "-i") == NULL) {
581 long bytes_per_inode = 0;
583 if (IS_MDT(&mop->mo_ldd))
584 bytes_per_inode = 4096;
586 /* Allocate fewer inodes on large OST devices. Most
587 filesystems can be much more aggressive than even
589 if ((IS_OST(&mop->mo_ldd) && (device_sz > 100000000)))
590 bytes_per_inode = 16384; /* > 100 Gb device */
593 if (bytes_per_inode > 0) {
594 sprintf(buf, " -i %ld", bytes_per_inode);
595 strscat(mop->mo_mkfsopts, buf,
596 sizeof(mop->mo_mkfsopts));
600 /* Inode size (for extended attributes). The LOV EA size is
601 * 32 (EA hdr) + 32 (lov_mds_md) + stripes * 24 (lov_ost_data),
602 * and we want some margin above that for ACLs, other EAs... */
603 if (strstr(mop->mo_mkfsopts, "-I") == NULL) {
605 if (IS_MDT(&mop->mo_ldd)) {
606 if (mop->mo_stripe_count > 72)
607 inode_size = 512; /* bz 7241 */
608 /* cray stripes across all osts (>60) */
609 else if (mop->mo_stripe_count > 32)
611 else if (mop->mo_stripe_count > 10)
615 } else if (IS_OST(&mop->mo_ldd)) {
616 /* now as we store fids in EA on OST we need
617 to make inode bigger */
621 if (inode_size > 0) {
622 sprintf(buf, " -I %ld", inode_size);
623 strscat(mop->mo_mkfsopts, buf,
624 sizeof(mop->mo_mkfsopts));
629 strscat(mop->mo_mkfsopts, " -q",
630 sizeof(mop->mo_mkfsopts));
633 if (strstr(mop->mo_mkfsopts, "-O") == NULL)
634 enable_default_backfs_features(mop);
636 /* Allow reformat of full devices (as opposed to
637 partitions.) We already checked for mounted dev. */
638 strscat(mop->mo_mkfsopts, " -F", sizeof(mop->mo_mkfsopts));
640 snprintf(mkfs_cmd, sizeof(mkfs_cmd),
641 "mkfs.ext2 -j -b %d -L %s ", L_BLOCK_SIZE,
642 mop->mo_ldd.ldd_svname);
643 } else if (mop->mo_ldd.ldd_mount_type == LDD_MT_REISERFS) {
644 long journal_sz = 0; /* FIXME default journal size */
645 if (journal_sz > 0) {
646 sprintf(buf, " --journal_size %ld", journal_sz);
647 strscat(mop->mo_mkfsopts, buf,
648 sizeof(mop->mo_mkfsopts));
650 snprintf(mkfs_cmd, sizeof(mkfs_cmd), "mkreiserfs -ff ");
652 fprintf(stderr,"%s: unsupported fs type: %d (%s)\n",
653 progname, mop->mo_ldd.ldd_mount_type,
654 MT_STR(&mop->mo_ldd));
658 /* For loop device format the dev, not the filename */
659 dev = mop->mo_device;
660 if (mop->mo_flags & MO_IS_LOOP)
661 dev = mop->mo_loopdev;
663 vprint("formatting backing filesystem %s on %s\n",
664 MT_STR(&mop->mo_ldd), dev);
665 vprint("\ttarget name %s\n", mop->mo_ldd.ldd_svname);
666 vprint("\t4k blocks %d\n", block_count);
667 vprint("\toptions %s\n", mop->mo_mkfsopts);
669 /* mkfs_cmd's trailing space is important! */
670 strscat(mkfs_cmd, mop->mo_mkfsopts, sizeof(mkfs_cmd));
671 strscat(mkfs_cmd, " ", sizeof(mkfs_cmd));
672 strscat(mkfs_cmd, dev, sizeof(mkfs_cmd));
673 if (block_count != 0) {
674 sprintf(buf, " %d", block_count);
675 strscat(mkfs_cmd, buf, sizeof(mkfs_cmd));
678 vprint("mkfs_cmd = %s\n", mkfs_cmd);
679 ret = run_command(mkfs_cmd, sizeof(mkfs_cmd));
682 fprintf(stderr, "Unable to build fs %s (%d)\n", dev, ret);
687 /* ==================== Lustre config functions =============*/
689 void print_ldd(char *str, struct lustre_disk_data *ldd)
691 printf("\n %s:\n", str);
692 printf("Target: %s\n", ldd->ldd_svname);
693 if (ldd->ldd_svindex == INDEX_UNASSIGNED)
694 printf("Index: unassigned\n");
696 printf("Index: %d\n", ldd->ldd_svindex);
697 if (ldd->ldd_uuid[0])
698 printf("UUID: %s\n", (char *)ldd->ldd_uuid);
699 printf("Lustre FS: %s\n", ldd->ldd_fsname);
700 printf("Mount type: %s\n", MT_STR(ldd));
701 printf("Flags: %#x\n", ldd->ldd_flags);
702 printf(" (%s%s%s%s%s%s%s%s)\n",
703 IS_MDT(ldd) ? "MDT ":"",
704 IS_OST(ldd) ? "OST ":"",
705 IS_MGS(ldd) ? "MGS ":"",
706 ldd->ldd_flags & LDD_F_NEED_INDEX ? "needs_index ":"",
707 ldd->ldd_flags & LDD_F_VIRGIN ? "first_time ":"",
708 ldd->ldd_flags & LDD_F_UPDATE ? "update ":"",
709 ldd->ldd_flags & LDD_F_WRITECONF ? "writeconf ":"",
710 ldd->ldd_flags & LDD_F_UPGRADE14 ? "upgrade1.4 ":"");
711 printf("Persistent mount opts: %s\n", ldd->ldd_mount_opts);
712 printf("Parameters:%s\n", ldd->ldd_params);
713 if (ldd->ldd_userdata[0])
714 printf("Comment: %s\n", ldd->ldd_userdata);
718 /* Write the server config files */
719 int write_local_files(struct mkfs_opts *mop)
721 char mntpt[] = "/tmp/mntXXXXXX";
727 /* Mount this device temporarily in order to write these files */
728 if (!mkdtemp(mntpt)) {
729 fprintf(stderr, "%s: Can't create temp mount point %s: %s\n",
730 progname, mntpt, strerror(errno));
734 dev = mop->mo_device;
735 if (mop->mo_flags & MO_IS_LOOP)
736 dev = mop->mo_loopdev;
738 ret = mount(dev, mntpt, MT_STR(&mop->mo_ldd), 0, NULL);
740 fprintf(stderr, "%s: Unable to mount %s: %s\n",
741 progname, dev, strerror(errno));
743 if (errno == ENODEV) {
744 fprintf(stderr, "Is the %s module available?\n",
745 MT_STR(&mop->mo_ldd));
750 /* Set up initial directories */
751 sprintf(filepnm, "%s/%s", mntpt, MOUNT_CONFIGS_DIR);
752 ret = mkdir(filepnm, 0777);
753 if ((ret != 0) && (errno != EEXIST)) {
754 fprintf(stderr, "%s: Can't make configs dir %s (%s)\n",
755 progname, filepnm, strerror(errno));
757 } else if (errno == EEXIST) {
761 sprintf(filepnm, "%s/%s", mntpt, "ROOT");
762 ret = mkdir(filepnm, 0777);
763 if ((ret != 0) && (errno != EEXIST)) {
764 fprintf(stderr, "%s: Can't make ROOT dir %s (%s)\n",
765 progname, filepnm, strerror(errno));
767 } else if (errno == EEXIST) {
771 /* Save the persistent mount data into a file. Lustre must pre-read
772 this file to get the real mount options. */
773 vprint("Writing %s\n", MOUNT_DATA_FILE);
774 sprintf(filepnm, "%s/%s", mntpt, MOUNT_DATA_FILE);
775 filep = fopen(filepnm, "w");
777 fprintf(stderr, "%s: Unable to create %s file: %s\n",
778 progname, filepnm, strerror(errno));
781 fwrite(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
786 /* Check for upgrade */
787 if ((mop->mo_ldd.ldd_flags & (LDD_F_UPGRADE14 | LDD_F_SV_TYPE_MGS))
788 == (LDD_F_UPGRADE14 | LDD_F_SV_TYPE_MGS)) {
791 int cmdsz = sizeof(cmd);
792 vprint("Copying old logs\n");
794 /* Copy the old client log to fsname-client */
795 sprintf(filepnm, "%s/%s/%s-client",
796 mntpt, MOUNT_CONFIGS_DIR, mop->mo_ldd.ldd_fsname);
797 snprintf(cmd, cmdsz, "cp %s/%s/client %s", mntpt, MDT_LOGS_DIR,
799 ret = run_command(cmd, cmdsz);
801 fprintf(stderr, "%s: Can't copy 1.4 config %s/client "
802 "(%d)\n", progname, MDT_LOGS_DIR, ret);
803 fprintf(stderr, "mount -t ldiskfs %s somewhere, "
804 "find the client log for fs %s and "
805 "copy it manually into %s/%s-client, "
808 mop->mo_ldd.ldd_fsname, MOUNT_CONFIGS_DIR,
809 mop->mo_ldd.ldd_fsname);
813 /* We need to use the old mdt log because otherwise mdt won't
814 have complete lov if old clients connect before all
816 /* Copy the old mdt log to fsname-MDT0000 (get old
817 name from mdt_UUID) */
819 strscpy(filepnm, (char *)mop->mo_ldd.ldd_uuid, sizeof(filepnm));
820 term = strstr(filepnm, "_UUID");
823 snprintf(cmd, cmdsz, "cp %s/%s/%s %s/%s/%s",
824 mntpt, MDT_LOGS_DIR, filepnm,
825 mntpt, MOUNT_CONFIGS_DIR,
826 mop->mo_ldd.ldd_svname);
827 ret = run_command(cmd, cmdsz);
830 fprintf(stderr, "%s: Can't copy 1.4 config %s/%s "
831 "(%d)\n", progname, MDT_LOGS_DIR, filepnm, ret);
832 fprintf(stderr, "mount -t ext3 %s somewhere, "
833 "find the MDT log for fs %s and "
834 "copy it manually into %s/%s, "
837 mop->mo_ldd.ldd_fsname, MOUNT_CONFIGS_DIR,
838 mop->mo_ldd.ldd_svname);
853 int read_local_files(struct mkfs_opts *mop)
855 char tmpdir[] = "/tmp/dirXXXXXX";
861 int cmdsz = sizeof(cmd);
863 /* Make a temporary directory to hold Lustre data files. */
864 if (!mkdtemp(tmpdir)) {
865 fprintf(stderr, "%s: Can't create temporary directory %s: %s\n",
866 progname, tmpdir, strerror(errno));
870 dev = mop->mo_device;
872 /* TODO: it's worth observing the get_mountdata() function that is
873 in mount_utils.c for getting the mountdata out of the
876 /* Construct debugfs command line. */
877 snprintf(cmd, cmdsz, "debugfs -c -R 'dump /%s %s/mountdata' %s",
878 MOUNT_DATA_FILE, tmpdir, dev);
880 ret = run_command(cmd, cmdsz);
882 verrprint("%s: Unable to dump %s dir (%d)\n",
883 progname, MOUNT_CONFIGS_DIR, ret);
885 sprintf(filepnm, "%s/mountdata", tmpdir);
886 filep = fopen(filepnm, "r");
888 vprint("Reading %s\n", MOUNT_DATA_FILE);
889 fread(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
892 /* Try to read pre-1.6 config from last_rcvd */
893 struct lr_server_data lsd;
894 verrprint("%s: Unable to read %d.%d config %s.\n",
895 progname, LUSTRE_MAJOR, LUSTRE_MINOR, filepnm);
897 verrprint("Trying 1.4 config from last_rcvd\n");
898 sprintf(filepnm, "%s/%s", tmpdir, LAST_RCVD);
900 /* Construct debugfs command line. */
901 snprintf(cmd, cmdsz, "debugfs -c -R 'dump /%s %s' %s",
902 LAST_RCVD, filepnm, dev);
904 ret = run_command(cmd, cmdsz);
906 fprintf(stderr, "%s: Unable to dump %s file (%d)\n",
907 progname, LAST_RCVD, ret);
911 filep = fopen(filepnm, "r");
913 fprintf(stderr, "%s: Unable to open %s: %s\n",
914 progname, filepnm, strerror(errno));
916 verrprint("Contents of %s:\n", tmpdir);
918 snprintf(cmd, cmdsz, "ls -l %s/", tmpdir);
919 run_command(cmd, cmdsz);
920 verrprint("Contents of disk:\n");
921 snprintf(cmd, cmdsz, "debugfs -c -R 'ls -l /' %s", dev);
922 run_command(cmd, cmdsz);
926 vprint("Reading %s\n", LAST_RCVD);
927 ret = fread(&lsd, 1, sizeof(lsd), filep);
928 if (ret < sizeof(lsd)) {
929 fprintf(stderr, "%s: Short read (%d of %d)\n",
930 progname, ret, (int)sizeof(lsd));
935 vprint("Feature compat=%x, incompat=%x\n",
936 lsd.lsd_feature_compat, lsd.lsd_feature_incompat);
938 if ((lsd.lsd_feature_compat & OBD_COMPAT_OST) ||
939 (lsd.lsd_feature_incompat & OBD_INCOMPAT_OST)) {
940 mop->mo_ldd.ldd_flags = LDD_F_SV_TYPE_OST;
941 mop->mo_ldd.ldd_svindex = lsd.lsd_ost_index;
942 } else if ((lsd.lsd_feature_compat & OBD_COMPAT_MDT) ||
943 (lsd.lsd_feature_incompat & OBD_INCOMPAT_MDT)) {
944 /* We must co-locate so mgs can see old logs.
945 If user doesn't want this, they can copy the old
946 logs manually and re-tunefs. */
947 mop->mo_ldd.ldd_flags =
948 LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_MGS;
949 mop->mo_ldd.ldd_svindex = lsd.lsd_mdt_index;
951 /* If neither is set, we're pre-1.4.6, make a guess. */
952 /* Construct debugfs command line. */
953 snprintf(cmd, cmdsz, "debugfs -c -R 'rdump /%s %s' %s",
954 MDT_LOGS_DIR, tmpdir, dev);
955 run_command(cmd, cmdsz);
957 sprintf(filepnm, "%s/%s", tmpdir, MDT_LOGS_DIR);
958 if (lsd.lsd_ost_index > 0) {
959 mop->mo_ldd.ldd_flags = LDD_F_SV_TYPE_OST;
960 mop->mo_ldd.ldd_svindex = lsd.lsd_ost_index;
962 /* If there's a LOGS dir, it's an MDT */
963 if ((ret = access(filepnm, F_OK)) == 0) {
964 mop->mo_ldd.ldd_flags =
967 /* Old MDT's are always index 0
969 mop->mo_ldd.ldd_svindex = 0;
971 /* The index may not be correct */
972 mop->mo_ldd.ldd_flags =
973 LDD_F_SV_TYPE_OST | LDD_F_NEED_INDEX;
974 verrprint("OST with unknown index\n");
980 memcpy(mop->mo_ldd.ldd_uuid, lsd.lsd_uuid,
981 sizeof(mop->mo_ldd.ldd_uuid));
982 mop->mo_ldd.ldd_flags |= LDD_F_UPGRADE14;
989 snprintf(cmd, cmdsz, "rm -rf %s", tmpdir);
990 run_command(cmd, cmdsz);
992 verrprint("Failed to read old data (%d)\n", ret);
997 void set_defaults(struct mkfs_opts *mop)
999 mop->mo_ldd.ldd_magic = LDD_MAGIC;
1000 mop->mo_ldd.ldd_config_ver = 1;
1001 mop->mo_ldd.ldd_flags = LDD_F_NEED_INDEX | LDD_F_UPDATE | LDD_F_VIRGIN;
1002 mop->mo_mgs_failnodes = 0;
1003 strcpy(mop->mo_ldd.ldd_fsname, "lustre");
1004 if (get_os_version() == 24)
1005 mop->mo_ldd.ldd_mount_type = LDD_MT_EXT3;
1007 mop->mo_ldd.ldd_mount_type = LDD_MT_LDISKFS;
1009 mop->mo_ldd.ldd_svindex = INDEX_UNASSIGNED;
1010 mop->mo_stripe_count = 1;
1013 static inline void badopt(const char *opt, char *type)
1015 fprintf(stderr, "%s: '--%s' only valid for %s\n",
1016 progname, opt, type);
1020 static int add_param(char *buf, char *key, char *val)
1022 int end = sizeof(((struct lustre_disk_data *)0)->ldd_params);
1023 int start = strlen(buf);
1027 keylen = strlen(key);
1028 if (start + 1 + keylen + strlen(val) >= end) {
1029 fprintf(stderr, "%s: params are too long-\n%s %s%s\n",
1030 progname, buf, key ? key : "", val);
1034 sprintf(buf + start, " %s%s", key ? key : "", val);
1038 /* from mount_lustre */
1039 /* Get rid of symbolic hostnames for tcp, since kernel can't do lookups */
1040 #define MAXNIDSTR 1024
1041 static char *convert_hostnames(char *s1)
1043 char *converted, *s2 = 0, *c;
1044 int left = MAXNIDSTR;
1047 converted = malloc(left);
1048 if (converted == NULL) {
1053 while ((left > 0) && ((s2 = strsep(&s1, ",: \0")))) {
1054 nid = libcfs_str2nid(s2);
1055 if (nid == LNET_NID_ANY) {
1059 fprintf(stderr, "%s: Can't parse NID '%s'\n",
1065 if (strncmp(libcfs_nid2str(nid), "127.0.0.1",
1066 strlen("127.0.0.1")) == 0) {
1067 fprintf(stderr, "%s: The NID '%s' resolves to the "
1068 "loopback address '%s'. Lustre requires a "
1069 "non-loopback address.\n",
1070 progname, s2, libcfs_nid2str(nid));
1075 c += snprintf(c, left, "%s,", libcfs_nid2str(nid));
1076 left = converted + MAXNIDSTR - c;
1082 int parse_opts(int argc, char *const argv[], struct mkfs_opts *mop,
1085 static struct option long_opt[] = {
1086 {"backfstype", 1, 0, 'b'},
1087 {"stripe-count-hint", 1, 0, 'c'},
1088 {"comment", 1, 0, 'u'},
1089 {"configdev", 1, 0, 'C'},
1090 {"device-size", 1, 0, 'd'},
1091 {"dryrun", 0, 0, 'n'},
1092 {"erase-params", 0, 0, 'e'},
1093 {"failnode", 1, 0, 'f'},
1094 {"failover", 1, 0, 'f'},
1096 {"help", 0, 0, 'h'},
1097 {"index", 1, 0, 'i'},
1098 {"mkfsoptions", 1, 0, 'k'},
1099 {"mgsnode", 1, 0, 'm'},
1100 {"mgsnid", 1, 0, 'm'},
1102 {"fsname",1, 0, 'L'},
1103 {"noformat", 0, 0, 'n'},
1104 {"nomgs", 0, 0, 'N'},
1105 {"mountfsoptions", 1, 0, 'o'},
1107 {"param", 1, 0, 'p'},
1108 {"print", 0, 0, 'n'},
1109 {"quiet", 0, 0, 'q'},
1110 {"reformat", 0, 0, 'r'},
1111 {"verbose", 0, 0, 'v'},
1112 {"writeconf", 0, 0, 'w'},
1115 char *optstring = "b:c:C:d:ef:Ghi:k:L:m:MnNo:Op:Pqru:vw";
1119 while ((opt = getopt_long(argc, argv, optstring, long_opt, &longidx)) !=
1124 while (i < LDD_MT_LAST) {
1125 if (strcmp(optarg, mt_str(i)) == 0) {
1126 mop->mo_ldd.ldd_mount_type = i;
1134 if (IS_MDT(&mop->mo_ldd)) {
1135 int stripe_count = atol(optarg);
1136 if (stripe_count <= 0) {
1137 fprintf(stderr, "%s: bad stripe count "
1138 "%d\n", progname, stripe_count);
1141 mop->mo_stripe_count = stripe_count;
1143 badopt(long_opt[longidx].name, "MDT");
1147 case 'C': /* Configdev */
1149 printf("Configdev not implemented\n");
1152 mop->mo_device_sz = atol(optarg);
1155 mop->mo_ldd.ldd_params[0] = '\0';
1156 /* Must update the mgs logs */
1157 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1160 char *nids = convert_hostnames(optarg);
1163 rc = add_param(mop->mo_ldd.ldd_params, PARAM_FAILNODE,
1168 /* Must update the mgs logs */
1169 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1174 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_MGS;
1180 if (!(mop->mo_ldd.ldd_flags &
1181 (LDD_F_UPGRADE14 | LDD_F_VIRGIN |
1182 LDD_F_WRITECONF))) {
1183 fprintf(stderr, "%s: cannot change the index of"
1184 " a registered target\n", progname);
1187 if (IS_MDT(&mop->mo_ldd) || IS_OST(&mop->mo_ldd)) {
1188 mop->mo_ldd.ldd_svindex = atol(optarg);
1189 mop->mo_ldd.ldd_flags &= ~LDD_F_NEED_INDEX;
1191 badopt(long_opt[longidx].name, "MDT,OST");
1196 strscpy(mop->mo_mkfsopts, optarg,
1197 sizeof(mop->mo_mkfsopts));
1201 if (!(mop->mo_flags & MO_FORCEFORMAT) &&
1202 (!(mop->mo_ldd.ldd_flags &
1203 (LDD_F_UPGRADE14 | LDD_F_VIRGIN |
1204 LDD_F_WRITECONF)))) {
1205 fprintf(stderr, "%s: cannot change the name of"
1206 " a registered target\n", progname);
1209 if ((strlen(optarg) < 1) || (strlen(optarg) > 8)) {
1210 fprintf(stderr, "%s: filesystem name must be "
1211 "1-8 chars\n", progname);
1214 if ((tmp = strpbrk(optarg, "/:"))) {
1215 fprintf(stderr, "%s: char '%c' not allowed in "
1216 "filesystem name\n", progname, *tmp);
1219 strscpy(mop->mo_ldd.ldd_fsname, optarg,
1220 sizeof(mop->mo_ldd.ldd_fsname));
1224 char *nids = convert_hostnames(optarg);
1227 rc = add_param(mop->mo_ldd.ldd_params, PARAM_MGSNODE,
1232 mop->mo_mgs_failnodes++;
1236 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_MDT;
1242 mop->mo_ldd.ldd_flags &= ~LDD_F_SV_TYPE_MGS;
1245 *mountopts = optarg;
1248 mop->mo_ldd.ldd_flags |= LDD_F_SV_TYPE_OST;
1251 rc = add_param(mop->mo_ldd.ldd_params, NULL, optarg);
1254 /* Must update the mgs logs */
1255 mop->mo_ldd.ldd_flags |= LDD_F_UPDATE;
1261 mop->mo_flags |= MO_FORCEFORMAT;
1264 strscpy(mop->mo_ldd.ldd_userdata, optarg,
1265 sizeof(mop->mo_ldd.ldd_userdata));
1271 mop->mo_ldd.ldd_flags |= LDD_F_WRITECONF;
1276 fprintf(stderr, "Unknown option '%c'\n", opt);
1282 /* Last arg is device */
1283 if (optind != argc - 1) {
1285 fprintf(stderr, "Bad argument: %s\n", argv[optind]);
1292 #include <lustre/libiam.h>
1294 #define LDISKFS_IOC_GETVERSION _IOR('f', 3, long)
1296 #ifndef TUNEFS /* mkfs.lustre */
1297 static int mkfs_iam_insert(int key_need_convert, char *keybuf,
1298 int rec_need_convert, char *recbuf, char *filename)
1302 struct iam_uapi_info ua;
1304 fd = iam_open(filename, &ua);
1306 fprintf(stderr, "failed to iam_open %s\n", filename);
1310 ret = iam_insert(fd, &ua,
1311 key_need_convert, keybuf,
1312 rec_need_convert, recbuf);
1315 fprintf(stderr, "failed to iam_insert %s\n", filename);
1322 static int touch_file(char *filename)
1326 if (filename == NULL) {
1330 fd = open(filename, O_CREAT | O_TRUNC, 0600);
1339 static int get_generation(char *filename, unsigned long *result)
1344 if (filename == NULL) {
1348 fd = open(filename, O_RDONLY);
1350 fprintf(stderr, "%s: failed to open %s\n",
1351 __FUNCTION__, filename);
1355 ret = ioctl(fd, LDISKFS_IOC_GETVERSION, result);
1358 return ((ret < 0) ? ret : 0);
1361 static int mkfs_mdt(struct mkfs_opts *mop)
1363 char mntpt[] = "/tmp/mntXXXXXX";
1364 char fstype[] = "ldiskfs";
1369 unsigned long generation;
1372 source = mop->mo_device;
1373 if (mop->mo_flags & MO_IS_LOOP) {
1374 source = mop->mo_loopdev;
1377 if ((source == NULL) || (*source == 0)) {
1381 if (!mkdtemp(mntpt)) {
1382 fprintf(stderr, "%s: failed to mkdtemp %s\n",
1383 __FUNCTION__, mntpt);
1387 ret = mount(source, mntpt, fstype, 0, NULL);
1392 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "seq_ctl");
1393 ret = touch_file(filepnm);
1398 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "seq_srv");
1399 ret = touch_file(filepnm);
1404 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "last_received");
1405 ret = touch_file(filepnm);
1410 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "lov_objid");
1411 ret = touch_file(filepnm);
1416 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "root");
1417 ret = iam_creat(filepnm, FMT_LVAR, L_BLOCK_SIZE, 4, 17, 4);
1422 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "fld");
1423 ret = iam_creat(filepnm, FMT_LFIX, L_BLOCK_SIZE, 8, 8, 4);
1428 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "orphans");
1429 ret = iam_creat(filepnm, FMT_LFIX, L_BLOCK_SIZE, 20, 8, 4);
1434 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "oi.16");
1435 ret = iam_creat(filepnm, FMT_LFIX, L_BLOCK_SIZE, 16, 8, 4);
1440 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "oi.5");
1441 ret = iam_creat(filepnm, FMT_LFIX, L_BLOCK_SIZE, 5, 8, 4);
1446 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, CAPA_KEYS);
1447 ret = touch_file(filepnm);
1453 ret = mount(source, mntpt, fstype, 0, NULL);
1458 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "root");
1459 ret = iam_polymorph(filepnm, 040755);
1461 perror("IAM_IOC_POLYMORPH");
1466 ret = mount(source, mntpt, fstype, 0, NULL);
1471 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "fld");
1472 ret = mkfs_iam_insert(1, "0000000000000002", 1, "0000000000000000", filepnm);
1477 ret = mkfs_iam_insert(1, "0000000000000001", 1, "0000000000000000", filepnm);
1482 snprintf(filepnm, sizeof(filepnm) - 1, "%s/%s", mntpt, "root");
1483 ret = stat(filepnm, &st);
1488 ret = get_generation(filepnm, &generation);
1493 snprintf(recbuf, sizeof(recbuf) - 1, "110000000000000001%8.8x%8.8x",
1494 (unsigned int)st.st_ino, (unsigned int)generation);
1495 ret = mkfs_iam_insert(0, ".", 1, recbuf, filepnm);
1500 ret = mkfs_iam_insert(0, "..", 1, recbuf, filepnm);
1513 int main(int argc, char *const argv[])
1515 struct mkfs_opts mop;
1516 struct lustre_disk_data *ldd;
1517 char *mountopts = NULL;
1518 char always_mountopts[512] = "";
1519 char default_mountopts[512] = "";
1522 if ((progname = strrchr(argv[0], '/')) != NULL)
1527 if ((argc < 2) || (argv[argc - 1][0] == '-')) {
1532 memset(&mop, 0, sizeof(mop));
1535 /* device is last arg */
1536 strscpy(mop.mo_device, argv[argc - 1], sizeof(mop.mo_device));
1538 /* Are we using a loop device? */
1539 ret = is_block(mop.mo_device);
1543 mop.mo_flags |= MO_IS_LOOP;
1546 /* For tunefs, we must read in the old values before parsing any
1549 /* Check whether the disk has already been formatted by mkfs.lustre */
1550 ret = is_lustre_target(&mop);
1553 fprintf(stderr, "Device %s has not been formatted with "
1554 "mkfs.lustre\n", mop.mo_device);
1559 ret = read_local_files(&mop);
1562 fprintf(stderr, "Failed to read previous Lustre data from %s "
1563 "(%d)\n", mop.mo_device, ret);
1566 if (strstr(mop.mo_ldd.ldd_params, PARAM_MGSNODE))
1567 mop.mo_mgs_failnodes++;
1570 print_ldd("Read previous values", &(mop.mo_ldd));
1573 ret = parse_opts(argc, argv, &mop, &mountopts);
1579 if (!(IS_MDT(ldd) || IS_OST(ldd) || IS_MGS(ldd))) {
1581 fprintf(stderr, "must set target type: MDT,OST,MGS\n");
1586 if (((IS_MDT(ldd) || IS_MGS(ldd))) && IS_OST(ldd)) {
1588 fprintf(stderr, "OST type is exclusive with MDT,MGS\n");
1593 if ((mop.mo_ldd.ldd_flags & (LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) ==
1594 (LDD_F_NEED_INDEX | LDD_F_UPGRADE14)) {
1596 fprintf(stderr, "Can't find the target index, "
1597 "specify with --index\n");
1603 * Comment out these 2 checks temporarily, since for multi-MDSes
1604 * in single node only 1 mds node could have mgs service
1606 if (IS_MDT(ldd) && !IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
1607 verrprint("No management node specified, adding MGS to this "
1609 ldd->ldd_flags |= LDD_F_SV_TYPE_MGS;
1611 if (!IS_MGS(ldd) && (mop.mo_mgs_failnodes == 0)) {
1614 fprintf(stderr, "Must specify --mgs or --mgsnode=\n");
1616 fprintf(stderr, "Must specify --mgsnode=\n");
1622 /* These are the permanent mount options (always included) */
1623 switch (ldd->ldd_mount_type) {
1625 case LDD_MT_LDISKFS:
1626 case LDD_MT_LDISKFS2: {
1627 sprintf(always_mountopts, "errors=remount-ro");
1628 if (IS_MDT(ldd) || IS_MGS(ldd))
1629 strscat(always_mountopts, ",iopen_nopriv,user_xattr",
1630 sizeof(always_mountopts));
1631 if ((get_os_version() == 24) && IS_OST(ldd))
1632 strscat(always_mountopts, ",asyncdel",
1633 sizeof(always_mountopts));
1634 /* NB: Files created while extents are enabled cannot be read
1635 if mounted with a kernel that doesn't include the CFS
1638 (ldd->ldd_mount_type == LDD_MT_LDISKFS ||
1639 ldd->ldd_mount_type == LDD_MT_LDISKFS2)) {
1640 strscat(default_mountopts, ",extents,mballoc",
1641 sizeof(default_mountopts));
1646 mop.mo_flags |= MO_IS_LOOP;
1647 sprintf(always_mountopts, "type=ext3,dev=%s",
1653 fprintf(stderr, "unknown fs type %d '%s'\n",
1654 ldd->ldd_mount_type,
1662 /* If user specifies mount opts, don't use defaults,
1663 but always use always_mountopts */
1664 sprintf(ldd->ldd_mount_opts, "%s,%s",
1665 always_mountopts, mountopts);
1668 if (ldd->ldd_mount_opts[0] == 0)
1669 /* use the defaults unless old opts exist */
1672 sprintf(ldd->ldd_mount_opts, "%s%s",
1673 always_mountopts, default_mountopts);
1677 server_make_name(ldd->ldd_flags, ldd->ldd_svindex,
1678 ldd->ldd_fsname, ldd->ldd_svname);
1681 print_ldd("Permanent disk data", ldd);
1684 printf("exiting before disk write.\n");
1688 if (check_mtab_entry(mop.mo_device))
1691 /* Create the loopback file */
1692 if (mop.mo_flags & MO_IS_LOOP) {
1693 ret = access(mop.mo_device, F_OK);
1696 #ifndef TUNEFS /* mkfs.lustre */
1697 /* Reformat the loopback file */
1698 if (ret || (mop.mo_flags & MO_FORCEFORMAT))
1699 ret = loop_format(&mop);
1702 ret = loop_setup(&mop);
1705 fprintf(stderr, "Loop device setup for %s failed: %s\n",
1706 mop.mo_device, strerror(ret));
1711 #ifndef TUNEFS /* mkfs.lustre */
1712 /* Check whether the disk has already been formatted by mkfs.lustre */
1713 if (!(mop.mo_flags & MO_FORCEFORMAT)) {
1714 ret = is_lustre_target(&mop);
1717 fprintf(stderr, "Device %s was previously formatted "
1718 "for lustre. Use --reformat to reformat it, "
1719 "or tunefs.lustre to modify.\n",
1725 /* Format the backing filesystem */
1726 ret = make_lustre_backfs(&mop);
1729 fprintf(stderr, "mkfs failed %d\n", ret);
1734 /* Write our config files */
1735 ret = write_local_files(&mop);
1738 fprintf(stderr, "failed to write local files\n");
1742 #ifndef TUNEFS /* mkfs.lustre */
1744 ret = mkfs_mdt(&mop);
1746 fprintf(stderr, "failed to mkfs_mdt\n");
1755 /* Fix any crazy return values from system() */
1756 if (ret && ((ret & 255) == 0))
1759 verrprint("%s: exiting with %d (%s)\n",
1760 progname, ret, strerror(ret));