4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/utils/mount_lustre.c
33 * Author: Robert Read <rread@clusterfs.com>
34 * Author: Nathan Rutman <nathan@clusterfs.com>
49 #include <sys/mount.h>
50 #include <sys/param.h>
51 #include <linux/lustre/lustre_ver.h>
54 #if defined(HAVE_LUSTRE_CRYPTO) && defined(HAVE_LIBKEYUTILS)
57 #include <linux/lnet/nidstr.h>
58 #include <libcfs/util/string.h>
61 #include "mount_utils.h"
64 # define WITH_LIBMOUNT "(libmount)"
66 # define WITH_LIBMOUNT ""
69 #define MAX_RETRIES 99
78 "\nThis mount helper should only be invoked via the mount (8) command,\ne.g. mount -t lustre dev dir\n\n");
79 fprintf(out, "usage: %s [-fhnvV] [-o <srvopt>] <device> <mountpt>\n",
81 fprintf(out, "usage: %s [-fhnvV] [-o <cliopt>] <mgstarget> <mountpt>\n",
84 "\t<device>: the local disk device when mounting a server\n"
85 "\t<mgstarget>: the server MGS and filesystem for a client:\n"
86 "\t\t<mgsnid>[:<altmgsnid>...]:/<filesystem>[/<subdir>]\n"
87 "\t\t\t<mgsnid>: MGS LNet Node Identifier (e.g. mgs01@o2ib)\n"
88 "\t\t\t<filesystem>: Lustre filesystem name (e.g. lustre1)\n"
89 "\t\t\t<subdir>: subdirectory of the filesystem to mount\n"
90 "\t<mountpt>: filesystem mountpoint (e.g. /mnt/lustre)\n"
91 "\t-f|--fake: fake mount (only update /etc/mtab)\n"
92 "\t-o force|--force: force mount even if already in /etc/mtab\n"
93 "\t-h|--help: print this usage message\n"
94 "\t-n|--nomtab: do not update /etc/mtab after mount\n"
95 "\t-v|--verbose: print verbose config settings\n"
96 "\t-V|--version: output build version of the utility and exit\n"
97 "\tdefault options are marked below with '*'\n"
98 "\t\t(no)flock: disable* or enable POSIX flock support\n"
99 "\t\t(no)user_xattr: disable or enable* user xattr namespace\n"
100 "\t<srvopt>: one or more comma separated server options:\n"
101 "\t\t(no)acl: disable or enable* POSIX ACL support completely\n"
102 "\t\tabort_recov: abort server recovery handling\n"
103 "\t\tnosvc: only start MGC/MGS without starting MDS/OSS\n"
104 "\t\tnomgs: only start target MDS/OSS, using existing MGS\n"
105 "\t\tnoscrub: do NOT auto start OI scrub unless requested\n"
106 "\t\tskip_lfsck: do NOT auto resume paused/crashed LFSCK\n"
107 "\t\tmd_stripe_cache_size=<num>: set MD RAID device stripe cache size\n"
108 "\t<cliopt>: one or more comma separated client options:\n"
109 "\t\texclude=<ostname>[:<ostname>]: list of inactive OSTs (e.g. lustre-OST0001)\n"
110 "\t\tlocalflock: enable POSIX flock only on local client\n"
111 "\t\tretry=<num>: number of times mount is retried by client\n"
113 "\t\tskpath=<file|directory>: path of keys to load into kernel keyring\n"
115 "\t\t(no)user_fid2path: disable* or enable user $MOUNT/.lustre/fid access\n"
116 "\t\t(no)checksum: disable or enable* data checksums\n"
117 "\t\t(no)lruresize: disable or enable* LDLM dynamic LRU size\n"
118 "\t\t(no)lazystatfs: disable or enable* statfs to work if OST is unavailable\n"
119 "\t\t32bitapi: return only 32-bit inode numbers to userspace\n"
120 "\t\t(no)verbose: disable or enable* messages at filesystem (un,re)mount\n"
121 #ifdef HAVE_LUSTRE_CRYPTO
122 #ifdef HAVE_LIBKEYUTILS
123 "\t\ttest_dummy_encryption: enable test dummy encryption mode\n"
125 "\t\tnoencrypt: disable client side encryption\n"
128 exit((out != stdout) ? EINVAL : 0);
131 /* Get rid of symbolic hostnames for tcp, since kernel can't do lookups */
132 #define MAXNIDSTR 1024
133 static char *convert_hostnames(char *s1)
135 char *converted, *s2 = 0, *c;
137 int left = MAXNIDSTR;
140 converted = malloc(left);
142 fprintf(stderr, "out of memory: needed %d bytes\n",
147 while ((left > 0) && (*s1 != '/')) {
148 s2 = strpbrk(s1, ",:");
153 nid = libcfs_str2nid(s1);
154 *s2 = sep; /* back to original string */
155 if (nid == LNET_NID_ANY)
157 c += scnprintf(c, left, "%s%c", libcfs_nid2str(nid), sep);
158 left = converted + MAXNIDSTR - c;
161 snprintf(c, left, "%s", s1);
164 fprintf(stderr, "%s: Can't parse NID '%s'\n", progname, s1);
169 /*****************************************************************************
171 * This part was cribbed from util-linux/mount/mount.c. There was no clear
172 * license information, but many other files in the package are identified as
173 * GNU GPL, so it's a pretty safe bet that was their intent.
175 ****************************************************************************/
177 const char *opt; /* option name */
178 int inv; /* true if flag value should be inverted */
179 int mask; /* flag mask value */
182 static const struct opt_map opt_map[] = {
183 /* these flags are parsed by mount, not Lustre */
184 { .opt = "async", .mask = MS_SYNCHRONOUS, .inv = 1 }, /* asynchronous I/O */
185 { .opt = "atime", .mask = MS_NOATIME, .inv = 1 }, /* set access time */
186 { .opt = "auto" }, /* allow auto mount */
187 { .opt = "defaults" }, /* default options */
188 { .opt = "dev", .mask = MS_NODEV, .inv = 1 }, /* interpret devs */
189 { .opt = "exec", .mask = MS_NOEXEC, .inv = 1 }, /* allow execution */
191 { .opt = "noatime", .mask = MS_NOATIME }, /* do not set atime */
192 { .opt = "noauto" }, /* mount explicitly */
193 { .opt = "nodev", .mask = MS_NODEV }, /* no interpret devs */
194 { .opt = "noowner", .inv = 1 }, /* no special privs */
195 { .opt = "nosuid", .mask = MS_NOSUID }, /* do not honor suid */
196 { .opt = "nouser", .inv = 1 }, /* users cannot mount */
197 { .opt = "nousers", .inv = 1 }, /* users cannot mount */
198 { .opt = "_netdev" }, /* network only */
199 { .opt = "noexec", .mask = MS_NOEXEC }, /* no execute */
200 { .opt = "remount", .mask = MS_REMOUNT }, /* remount */
201 { .opt = "ro", .mask = MS_RDONLY }, /* read-only */
202 { .opt = "rw", .mask = MS_RDONLY, .inv = 1 }, /* read-write */
203 { .opt = "suid", .mask = MS_NOSUID, .inv = 1 }, /* honor suid */
204 { .opt = "sync", .mask = MS_SYNCHRONOUS }, /* synchronous I/O */
206 { .opt = "diratime", /* set access time */
207 .mask = MS_NODIRATIME, .inv = 1 }, /* on read */
208 { .opt = "nodiratime", /* do not set access */
209 .mask = MS_NODIRATIME }, /* time on read */
212 { .opt = "norelatime", /* do not set rel */
213 .mask = MS_RELATIME, .inv = 1 }, /* access time */
214 { .opt = "relatime", /* set relative */
215 .mask = MS_RELATIME }, /* access time */
217 #ifdef MS_STRICTATIME
218 { .opt = "strictatime",
219 .mask = MS_STRICTATIME }, /* strict access time */
222 /****************************************************************************/
225 * 1 = don't pass on to lustre
226 * 0 = pass on to lustre
228 static int parse_one_option(const char *check, int *flagp)
230 const struct opt_map *opt;
232 for (opt = &opt_map[0]; opt->opt != NULL; opt++) {
233 if (strncmp(check, opt->opt, strlen(opt->opt)) == 0) {
236 *flagp &= ~(opt->mask);
244 * Assume any unknown options are valid and pass them on. The mount
245 * will fail if lmd_parse, ll_options or ldiskfs doesn't recognize it.
250 static size_t merge_strings(char *dst, const char *src, size_t size)
252 size_t dsize = strlen(dst);
253 size_t len = strlen(src);
254 size_t ret = dsize + len;
260 memcpy(dst, src, len);
265 static int append_option(char *options, size_t options_len,
266 const char *param, const char *value)
270 if (options[0] != '\0') {
271 rc = merge_strings(options, ",", options_len);
272 if (rc >= options_len)
276 rc = merge_strings(options, param, options_len);
277 if (rc >= options_len)
281 rc = merge_strings(options, value, options_len);
282 if (rc >= options_len)
287 fprintf(stderr, "error: mount options %s%s too long\n", param, value);
292 * Replace options with subset of Lustre-specific options, and
293 * fill in mount flags
295 int parse_options(struct mount_opts *mop, char *orig_options,
296 int *flagp, size_t options_len)
298 char *options, *opt, *nextopt, *arg, *val;
301 options = calloc(strlen(orig_options) + 1, 1);
306 nextopt = orig_options;
307 while ((opt = strsep(&nextopt, ","))) {
312 /* Handle retries in a slightly different manner */
314 val = strchr(opt, '=');
316 * please note that some ldiskfs mount options are also in
317 * the form of param=value. We should pay attention not to
318 * remove those mount options, see bug 22097.
320 if (val && strncmp(arg, "max_sectors_kb", 14) == 0) {
321 mop->mo_max_sectors_kb = atoi(val + 1);
323 strncmp(arg, "md_stripe_cache_size", 20) == 0) {
324 mop->mo_md_stripe_cache_size = atoi(val + 1);
325 } else if (val && strncmp(arg, "retry", 5) == 0) {
326 mop->mo_retry = atoi(val + 1);
327 if (mop->mo_retry > MAX_RETRIES)
328 mop->mo_retry = MAX_RETRIES;
329 else if (mop->mo_retry < 0)
331 } else if (val && strncmp(arg, "mgssec", 6) == 0) {
332 rc = append_option(options, options_len, opt, NULL);
335 } else if (strncmp(arg, "nosvc", 5) == 0) {
337 rc = append_option(options, options_len, opt, NULL);
340 } else if (strcmp(opt, "force") == 0) {
341 /* XXX special check for 'force' option */
343 printf("force: %d\n", mop->mo_force);
345 } else if (val && strncmp(opt, "skpath=", 7) == 0) {
346 if (strlen(val) + 1 >= sizeof(mop->mo_skpath)) {
348 "%s: shared key path too long\n",
353 strncpy(mop->mo_skpath, val + 1,
354 sizeof(mop->mo_skpath) - 1);
356 #ifdef HAVE_LUSTRE_CRYPTO
357 } else if (strncmp(arg, "test_dummy_encryption", 21) == 0) {
358 #ifdef HAVE_LIBKEYUTILS
359 /* Using dummy encryption mode requires inserting a
360 * special dummy key into the session keyring.
361 * Key type is "logon", key description is
362 * "fscrypt:4242424242424242", and key payload has to be
363 * in the form <mode><raw><size>, where:
364 * <mode> is "\x00\x00\x00\x00"
365 * <raw> is "$(printf ""\\\\x%02x"" {0..63})"
366 * <size> is "\x40\x00\x00\x00" for little endian,
367 * "\x00\x00\x00\x40" for big endian.
370 int *p = (int *)payload;
371 char *q = (char *)(p + 1);
381 key = add_key("logon", "fscrypt:4242424242424242",
382 (const void *)payload, sizeof(payload),
383 KEY_SPEC_SESSION_KEYRING);
387 "%s: test dummy encryption option ignored: could not insert dummy encryption key into session keyring\n",
390 /* pass this on as an option */
391 rc = append_option(options, options_len, opt,
396 #else /* HAVE_LIBKEYUTILS */
398 "%s: test dummy encryption option ignored: Lustre not built with libkeyutils support\n",
402 } else if (parse_one_option(opt, flagp) == 0) {
403 /* pass this on as an option */
404 rc = append_option(options, options_len, opt, NULL);
409 #ifdef MS_STRICTATIME
410 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(3, 2, 53, 0)
413 * In the future when upstream fixes land in all supported kernels
414 * we should stop forcing MS_STRICTATIME in lustre mounts.
415 * We override the kernel level default of MS_RELATIME for now
416 * due to a kernel vfs level bug in atime updates that fails
417 * to reset timestamps from the future.
419 #warn "remove MS_STRICTATIME override if kernel updates atime from the future"
422 * set strictatime to default if NOATIME or RELATIME
425 if (!(*flagp & (MS_NOATIME | MS_RELATIME)))
426 *flagp |= MS_STRICTATIME;
428 strcpy(orig_options, options);
435 #ifdef HAVE_SERVER_SUPPORT
436 /* Add mgsnids from ldd params */
437 static int add_mgsnids(struct mount_opts *mop, char *options,
438 const char *params, size_t options_len)
440 char *ptr = (char *)params;
444 while ((ptr = strstr(ptr, PARAM_MGSNODE)) != NULL) {
445 sep = strchr(ptr, ' ');
450 rc = append_option(options, options_len, ptr, NULL);
453 mop->mo_have_mgsnid++;
466 static int clear_update_ondisk(char *source, struct lustre_disk_data *ldd)
468 char wanted_mountopts[512] = "";
469 struct mkfs_opts mkop;
473 memset(&mkop, 0, sizeof(mkop));
475 mkop.mo_ldd.ldd_flags &= ~LDD_F_UPDATE;
476 mkop.mo_flags = MO_NOHOSTID_CHECK; /* Ignore missing hostid */
477 if (strlen(source) > sizeof(mkop.mo_device) - 1) {
479 fprintf(stderr, "Device name too long: %s\n", source);
482 strncpy(mkop.mo_device, source, sizeof(mkop.mo_device));
484 ret = osd_prepare_lustre(&mkop,
485 wanted_mountopts, sizeof(wanted_mountopts));
488 fprintf(stderr, "Can't prepare device %s: %s\n",
489 source, strerror(ret));
493 /* Create the loopback file */
494 if (mkop.mo_flags & MO_IS_LOOP) {
495 ret = access(mkop.mo_device, F_OK);
499 fprintf(stderr, "Can't access device %s: %s\n",
500 source, strerror(ret));
504 ret = loop_setup(&mkop);
507 fprintf(stderr, "Loop device setup for %s failed: %s\n",
508 mkop.mo_device, strerror(ret));
512 ret = osd_write_ldd(&mkop);
515 fprintf(stderr, "failed to write local files: %s\n",
519 ret2 = loop_cleanup(&mkop);
526 static int parse_ldd(char *source, struct mount_opts *mop,
527 char *options, size_t options_len)
529 struct lustre_disk_data *ldd = &mop->mo_ldd;
534 rc = osd_is_lustre(source, &ldd->ldd_mount_type);
537 "%s: %s has not been formatted with mkfs.lustre or the backend filesystem type is not supported by this tool\n",
542 rc = osd_read_ldd(source, ldd);
545 "%s: %s failed to read permanent mount data: %s\n",
546 progname, source, rc >= 0 ? strerror(rc) : "");
550 if ((IS_MDT(ldd) || IS_OST(ldd)) &&
551 (ldd->ldd_flags & LDD_F_NEED_INDEX)) {
553 "%s: %s has no index assigned (probably formatted with old mkfs)\n",
558 if (ldd->ldd_flags & LDD_F_UPDATE)
559 clear_update_ondisk(source, ldd);
561 /* Since we never rewrite ldd, ignore temp flags */
562 ldd->ldd_flags &= ~(LDD_F_VIRGIN | LDD_F_WRITECONF |
563 LDD_F_NO_LOCAL_LOGS);
565 /* This is to make sure default options go first */
566 temp_options = strdup(options);
568 fprintf(stderr, "%s: can't allocate memory for temp_options\n",
572 strncpy(options, ldd->ldd_mount_opts, options_len);
573 rc = append_option(options, options_len, temp_options, NULL);
578 /* svname of the form lustre:OST1234 means never registered */
579 rc = strlen(ldd->ldd_svname);
580 if (strcmp(ldd->ldd_svname, "MGS") != 0) {
582 fprintf(stderr, "%s: invalid name '%s'\n",
583 progname, ldd->ldd_svname);
585 } else if (ldd->ldd_svname[rc - 8] == ':') {
586 ldd->ldd_svname[rc - 8] = '-';
587 ldd->ldd_flags |= LDD_F_VIRGIN;
588 } else if (ldd->ldd_svname[rc - 8] == '=') {
589 ldd->ldd_svname[rc - 8] = '-';
590 ldd->ldd_flags |= LDD_F_WRITECONF;
591 } else if (ldd->ldd_svname[rc - 8] == '+') {
592 ldd->ldd_svname[rc - 8] = '-';
593 ldd->ldd_flags |= LDD_F_NO_LOCAL_LOGS;
596 /* backend osd type */
597 rc = append_option(options, options_len, "osd=",
598 mt_type(ldd->ldd_mount_type));
602 if (!mop->mo_have_mgsnid) {
604 * Only use disk data if mount -o mgsnode=nid wasn't
607 if (ldd->ldd_flags & LDD_F_SV_TYPE_MGS) {
608 rc = append_option(options, options_len, "mgs", NULL);
611 mop->mo_have_mgsnid++;
613 if (add_mgsnids(mop, options, ldd->ldd_params,
618 /* Better have an mgsnid by now */
619 if (!mop->mo_have_mgsnid) {
620 fprintf(stderr, "%s: missing option mgsnode=<nid>\n",
625 if (ldd->ldd_flags & LDD_F_VIRGIN) {
626 rc = append_option(options, options_len, "virgin", NULL);
630 if (ldd->ldd_flags & LDD_F_UPDATE) {
631 rc = append_option(options, options_len, "update", NULL);
635 if (ldd->ldd_flags & LDD_F_WRITECONF) {
636 rc = append_option(options, options_len, "writeconf", NULL);
640 if (ldd->ldd_flags & LDD_F_NO_LOCAL_LOGS) {
641 rc = append_option(options, options_len, "nolocallogs", NULL);
645 if (ldd->ldd_flags & LDD_F_NO_PRIMNODE) {
646 rc = append_option(options, options_len, "noprimnode", NULL);
652 * prefix every lustre parameter with param= so that in-kernel
653 * mount can recognize them properly and send to MGS at registration
655 start = ldd->ldd_params;
656 while (start && *start != '\0') {
657 while (*start == ' ')
662 start = strchr(cur, ' ');
667 rc = append_option(options, options_len, "param=", cur);
672 /* svname must be last option */
673 rc = append_option(options, options_len, "svname=", ldd->ldd_svname);
677 #endif /* HAVE_SERVER_SUPPORT */
679 static void set_defaults(struct mount_opts *mop)
681 memset(mop, 0, sizeof(*mop));
682 mop->mo_usource = NULL;
683 mop->mo_source = NULL;
688 mop->mo_have_mgsnid = 0;
689 mop->mo_md_stripe_cache_size = 16384;
690 mop->mo_orig_options = "";
692 mop->mo_max_sectors_kb = -1;
695 static int parse_opts(int argc, char *const argv[], struct mount_opts *mop)
697 static struct option long_opts[] = {
698 { .val = 1, .name = "force", .has_arg = no_argument },
699 { .val = 'f', .name = "fake", .has_arg = no_argument },
700 { .val = 'h', .name = "help", .has_arg = no_argument },
701 { .val = 'n', .name = "nomtab", .has_arg = no_argument },
702 { .val = 'o', .name = "options", .has_arg = required_argument },
703 { .val = 'v', .name = "verbose", .has_arg = no_argument },
704 { .val = 'V', .name = "version", .has_arg = no_argument },
706 char real_path[PATH_MAX] = {'\0'};
708 char path[256], name[256];
713 while ((opt = getopt_long(argc, argv, "fhno:vV",
714 long_opts, NULL)) != EOF){
718 printf("force: %d\n", mop->mo_force);
722 printf("fake: %d\n", mop->mo_fake);
729 printf("nomtab: %d\n", mop->mo_nomtab);
732 mop->mo_orig_options = optarg;
739 fprintf(stdout, "%s %s %s\n", progname,
740 LUSTRE_VERSION_STRING, WITH_LIBMOUNT);
743 fprintf(stderr, "%s: unknown option '%c'\n",
750 if (optind + 2 > argc) {
751 fprintf(stderr, "%s: too few arguments\n", progname);
755 mop->mo_usource = argv[optind];
756 if (!mop->mo_usource)
760 * Try to get the real path to the device, in case it is a
761 * symbolic link for instance
763 if (realpath(mop->mo_usource, real_path) != NULL) {
764 ptr = strrchr(real_path, '/');
765 if (ptr && strncmp(ptr, "/dm-", 4) == 0 &&
766 isdigit(*(ptr + 4))) {
767 snprintf(path, sizeof(path), "/sys/block/%s/dm/name",
769 if ((f = fopen(path, "r"))) {
770 /* read "<name>\n" from sysfs */
771 if (fgets(name, sizeof(name), f) &&
772 (sz = strlen(name)) > 1) {
774 snprintf(real_path, sizeof(real_path),
775 "/dev/mapper/%s", name);
780 mop->mo_usource = strdup(real_path);
783 ptr = strstr(mop->mo_usource, ":/");
785 mop->mo_source = convert_hostnames(mop->mo_usource);
789 mop->mo_source = strdup(mop->mo_usource);
792 if (realpath(argv[optind + 1], mop->mo_target) == NULL) {
794 fprintf(stderr, "warning: %s: cannot resolve: %s\n",
795 argv[optind + 1], strerror(errno));
802 #ifdef HAVE_SERVER_SUPPORT
804 * change label from <fsname>:<index> to
805 * <fsname>-<index> to indicate the device has
806 * been registered. only if the label is
807 * supposed to be changed and target service
808 * is supposed to start
810 static void label_lustre(struct mount_opts *mop)
815 if (mop->mo_ldd.ldd_flags & (LDD_F_VIRGIN | LDD_F_WRITECONF |
816 LDD_F_NO_LOCAL_LOGS)) {
817 (void)osd_label_lustre(mop);
819 struct lustre_disk_data ldd;
823 * device label could be changed after journal recovery,
824 * it should also be relabeled for mount has succeeded.
826 memset(&ldd, 0, sizeof(ldd));
827 ldd.ldd_mount_type = mop->mo_ldd.ldd_mount_type;
828 rc = osd_read_ldd(mop->mo_source, &ldd);
830 rc = strlen(ldd.ldd_svname);
831 if (rc >= 8 && ldd.ldd_svname[rc - 8] != '-')
832 (void)osd_label_lustre(mop);
836 #endif /* HAVE_SERVER_SUPPORT */
838 int main(int argc, char *const argv[])
840 struct mount_opts mop;
848 progname = strrchr(argv[0], '/');
849 progname = progname ? progname + 1 : argv[0];
853 g_pagesize = sysconf(_SC_PAGESIZE);
854 if (g_pagesize == -1) {
856 printf("error: %d failed to get page size.\n", rc);
859 maxopt_len = MIN(g_pagesize, 64 * 1024);
861 rc = parse_opts(argc, argv, &mop);
866 for (i = 0; i < argc; i++)
867 printf("arg[%d] = %s\n", i, argv[i]);
868 printf("source = %s (%s), target = %s\n", mop.mo_usource,
869 mop.mo_source, mop.mo_target);
870 printf("options = %s\n", mop.mo_orig_options);
873 options = malloc(maxopt_len);
875 fprintf(stderr, "can't allocate memory for options\n");
880 if (strlen(mop.mo_orig_options) >= maxopt_len) {
881 fprintf(stderr, "error: mount options too long\n");
886 strcpy(options, mop.mo_orig_options);
887 rc = parse_options(&mop, options, &flags, maxopt_len);
889 fprintf(stderr, "%s: can't parse options: %s\n",
895 rc = check_mtab_entry(mop.mo_usource, mop.mo_source,
896 mop.mo_target, "lustre");
897 if (rc && !(flags & MS_REMOUNT)) {
899 "%s: according to %s %s is already mounted on %s\n",
900 progname, MOUNTED, mop.mo_usource,
905 if (!rc && (flags & MS_REMOUNT)) {
907 "%s: according to %s %s is not already mounted on %s\n",
908 progname, MOUNTED, mop.mo_usource,
914 if (flags & MS_REMOUNT)
917 rc = access(mop.mo_target, F_OK);
920 fprintf(stderr, "%s: %s inaccessible: %s\n", progname,
921 mop.mo_target, strerror(errno));
925 client = (strstr(mop.mo_usource, ":/") != NULL);
927 #ifdef HAVE_SERVER_SUPPORT
932 rc = parse_ldd(mop.mo_source, &mop, options, maxopt_len);
937 fprintf(stderr, "%s: cannot mount %s: no server support\n",
938 progname, mop.mo_usource);
944 * In Linux 2.4, the target device doesn't get passed to any of our
945 * functions. So we'll stick it on the end of the options.
947 rc = append_option(options, maxopt_len, "device=", mop.mo_source);
952 printf("mounting device %s at %s, flags=%#x options=%s\n",
953 mop.mo_source, mop.mo_target, flags, options);
955 #ifdef HAVE_SERVER_SUPPORT
956 if (!client && osd_tune_lustre(mop.mo_source, &mop)) {
959 "%s: unable to set tunables for %s (may cause reduced IO performance)\n",
960 argv[0], mop.mo_source);
964 if (mop.mo_skpath[0] != '\0') {
965 /* Treat shared key failures as fatal */
966 rc = load_shared_keys(&mop);
968 fprintf(stderr, "%s: Error loading shared keys: %s\n",
969 progname, strerror(rc));
973 #endif /* HAVE_GSS */
978 /* Prefer filesystem type given on mount command line
979 * so it appears correctly in the /proc/mounts output.
981 if (strstr(argv[0], "mount.lustre_tgt"))
982 fstype = "lustre_tgt";
986 * flags and target get to lustre_get_sb(), but not
987 * lustre_fill_super(). Lustre ignores the flags, but mount
990 for (i = 0, rc = -EAGAIN; i <= mop.mo_retry && rc != 0; i++) {
991 rc = mount(mop.mo_source, mop.mo_target, fstype,
992 flags, (void *)options);
996 "%s: mount -t %s %s at %s failed: %s retries left: %d\n",
997 basename(progname), fstype,
998 mop.mo_usource, mop.mo_target,
1003 /* Pre-2.13 Lustre without 'lustre_tgt' type?
1004 * Try with 'lustre' instead. Eventually this
1005 * can be removed (e.g. 2.18 or whenever).
1007 if (errno == ENODEV &&
1008 strcmp(fstype, "lustre_tgt") == 0) {
1015 int limit = i / 2 > 5 ? i / 2 : 5;
1021 #ifdef HAVE_SERVER_SUPPORT
1035 cli = strrchr(mop.mo_usource, ':');
1036 if (cli && (strlen(cli) > 2))
1041 fprintf(stderr, "%s: mount %s at %s failed: %s\n", progname,
1042 mop.mo_usource, mop.mo_target, strerror(errno));
1045 "Is the backend filesystem mounted?\n Check /etc/mtab and /proc/mounts\n");
1046 if (errno == ENODEV)
1048 "Are the lustre modules loaded?\n Check /etc/modprobe.conf and /proc/filesystems\n");
1049 if (errno == ENOTBLK)
1050 fprintf(stderr, "Do you need -o loop?\n");
1051 if (errno == ENOMEDIUM)
1053 "This filesystem needs at least 1 OST\n");
1054 if (errno == ENOENT) {
1055 fprintf(stderr, "Is the MGS specification correct?\n");
1056 fprintf(stderr, "Is the filesystem name correct?\n");
1058 "If upgrading, is the copied client log valid? (see upgrade docs)\n");
1060 if (errno == EALREADY)
1062 "The target service is already running. (%s)\n",
1066 "The target service failed to start (bad config log?) (%s). See /var/log/messages.\n",
1069 fprintf(stderr, "Is the MGS running?\n");
1070 if (errno == EADDRINUSE)
1072 "The target service's index is already in use. (%s)\n",
1074 if (errno == EINVAL) {
1075 fprintf(stderr, "This may have multiple causes.\n");
1078 "Is '%s' the correct filesystem name?\n",
1080 fprintf(stderr, "Are the mount options correct?\n");
1081 fprintf(stderr, "Check the syslog for more info.\n");
1084 /* May as well try to clean up loop devs */
1085 if (strncmp(mop.mo_usource, "/dev/loop", 9) == 0) {
1089 sprintf(cmd, "/sbin/losetup -d %s", mop.mo_usource);
1090 if ((ret = system(cmd)) < 0)
1093 rc = WEXITSTATUS(ret);
1098 * Deal with utab just for client. Note that we ignore
1099 * the return value here since it is not worth to fail
1100 * mount by prevent some rare cases
1102 if (strstr(mop.mo_usource, ":/") != NULL)
1103 update_utab_entry(&mop);
1104 if (!mop.mo_nomtab) {
1105 rc = update_mtab_entry(mop.mo_usource, mop.mo_target,
1106 "lustre", mop.mo_orig_options,
1112 #ifdef HAVE_SERVER_SUPPORT
1120 /* mo_usource should be freed, but we can rely on the kernel */
1121 free(mop.mo_source);