2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sbin/hammer/cmd_cleanup.c,v 1.6 2008/10/07 22:28:41 thomas Exp $
37 * Clean up a specific HAMMER filesystem or all HAMMER filesystems.
39 * Each filesystem is expected to have a <mount>/snapshots directory.
40 * No cleanup will be performed on any filesystem that does not. If
41 * no filesystems are specified the 'df' program is run and any HAMMER
42 * or null-mounted hammer PFS's are extracted.
44 * The snapshots directory may contain a config file called 'config'. If
45 * no config file is present one will be created with the following
48 * snapshots 1d 60d (0d 0d for /tmp, /var/tmp, /usr/obj)
54 * All hammer commands create and maintain cycle files in the snapshots
65 static void do_cleanup(const char *path);
66 static void config_init(const char *path, struct hammer_ioc_config *config);
67 static void migrate_config(FILE *fp, struct hammer_ioc_config *config);
68 static void migrate_snapshots(int fd, const char *snapshots_path);
69 static void migrate_one_snapshot(int fd, const char *fpath,
70 struct hammer_ioc_snapshot *snapshot);
71 static int strtosecs(char *ptr);
72 static const char *dividing_slash(const char *path);
73 static int check_period(const char *snapshots_path, const char *cmd, int arg1,
75 static void save_period(const char *snapshots_path, const char *cmd,
77 static int check_softlinks(int fd, int new_config, const char *snapshots_path);
78 static void cleanup_softlinks(int fd, int new_config,
79 const char *snapshots_path, int arg2, char *arg3);
80 static int check_expired(const char *fpath, int arg2);
82 static int create_snapshot(const char *path, const char *snapshots_path);
83 static int cleanup_rebalance(const char *path, const char *snapshots_path,
85 static int cleanup_prune(const char *path, const char *snapshots_path,
86 int arg1, int arg2, int snapshots_disabled);
87 static int cleanup_reblock(const char *path, const char *snapshots_path,
89 static int cleanup_recopy(const char *path, const char *snapshots_path,
92 static void runcmd(int *resp, const char *ctl, ...);
95 * WARNING: Do not make the SNAPSHOTS_BASE "/var/snapshots" because
96 * it will interfere with the older HAMMER VERS < 3 snapshots directory
99 #define SNAPSHOTS_BASE "/var/hammer" /* HAMMER VERS >= 3 */
102 struct didpfs *FirstPFS;
105 hammer_cmd_cleanup(char **av, int ac)
107 char *fstype, *fs, *path;
108 struct statfs *stfsbuf;
113 mntsize = getmntinfo(&stfsbuf, MNT_NOWAIT);
115 for (i=0; i < mntsize; i++) {
117 * We will cleanup in the case fstype is hammer.
118 * If we have null-mounted PFS, we check the
119 * mount source. If it looks like a PFS, we
120 * proceed to cleanup also.
122 fstype = stfsbuf[i].f_fstypename;
123 fs = stfsbuf[i].f_mntfromname;
124 if ((strcmp(fstype, "hammer") == 0) ||
125 ((strcmp(fstype, "null") == 0) &&
126 (strstr(fs, "/@@0x") != NULL ||
127 strstr(fs, "/@@-1") != NULL))) {
128 path = stfsbuf[i].f_mntonname;
145 do_cleanup(const char *path)
147 struct hammer_ioc_pseudofs_rw pfs;
148 struct hammer_ioc_config config;
149 struct hammer_ioc_version version;
150 union hammer_ioc_mrecord_any mrec_tmp;
151 char *snapshots_path;
164 struct didpfs *didpfs;
165 int snapshots_disabled = 0;
166 int prune_warning = 0;
168 int snapshots_from_pfs = 0;
173 bzero(&pfs, sizeof(pfs));
174 bzero(&mrec_tmp, sizeof(mrec_tmp));
175 pfs.ondisk = &mrec_tmp.pfs.pfsd;
176 pfs.bytes = sizeof(mrec_tmp.pfs.pfsd);
179 printf("cleanup %-20s -", path);
180 fd = open(path, O_RDONLY);
182 printf(" unable to access directory: %s\n", strerror(errno));
185 if (ioctl(fd, HAMMERIOC_GET_PSEUDOFS, &pfs) < 0) {
186 printf(" not a HAMMER filesystem: %s\n", strerror(errno));
190 if (pfs.version != HAMMER_IOC_PSEUDOFS_VERSION) {
191 printf(" unrecognized HAMMER version\n");
195 bzero(&version, sizeof(version));
196 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
197 printf(" HAMMER filesystem but couldn't retrieve version!\n");
202 bzero(&config, sizeof(config));
203 if (version.cur_version >= 3) {
204 if (ioctl(fd, HAMMERIOC_GET_CONFIG, &config) == 0 &&
205 config.head.error == 0) {
211 * Make sure we have not already handled this PFS. Several nullfs
212 * mounts might alias the same PFS.
214 for (didpfs = FirstPFS; didpfs; didpfs = didpfs->next) {
215 if (bcmp(&didpfs->uuid, &mrec_tmp.pfs.pfsd.unique_uuid, sizeof(uuid_t)) == 0) {
216 printf(" PFS #%d already handled\n", pfs.pfs_id);
221 didpfs = malloc(sizeof(*didpfs));
222 didpfs->next = FirstPFS;
224 didpfs->uuid = mrec_tmp.pfs.pfsd.unique_uuid;
227 * Calculate the old snapshots directory for HAMMER VERSION < 3
229 * If the directory is explicitly specified in the PFS config
230 * we flag it and will not migrate it later.
232 if (mrec_tmp.pfs.pfsd.snapshots[0] == '/') {
233 asprintf(&snapshots_path, "%s", mrec_tmp.pfs.pfsd.snapshots);
234 snapshots_from_pfs = 1;
235 } else if (mrec_tmp.pfs.pfsd.snapshots[0]) {
236 printf(" WARNING: pfs-slave's snapshots dir is not absolute\n");
239 } else if (mrec_tmp.pfs.pfsd.mirror_flags & HAMMER_PFSD_SLAVE) {
240 printf(" WARNING: must configure snapshot dir for PFS slave\n");
241 printf("\tWe suggest <fs>/var/slaves/<name> where "
242 "<fs> is the base HAMMER fs\n");
243 printf("\tcontaining the slave\n");
247 asprintf(&snapshots_path,
248 "%s%ssnapshots", path, dividing_slash(path));
252 * Check for old-style config file
254 asprintf(&config_path, "%s/config", snapshots_path);
255 fp = fopen(config_path, "r");
258 * Handle upgrades to hammer version 3, move the config
259 * file into meta-data.
261 * For the old config read the file into the config structure,
262 * we will parse it out of the config structure regardless.
264 if (version.cur_version >= 3) {
266 printf("(migrating) ");
268 migrate_config(fp, &config);
269 migrate_snapshots(fd, snapshots_path);
271 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
272 printf(" cannot init meta-data config!\n");
277 } else if (new_config == 0) {
278 config_init(path, &config);
279 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
280 printf(" cannot init meta-data config!\n");
288 * Create missing snapshots directory for HAMMER VERSION < 3
290 if (stat(snapshots_path, &st) < 0) {
291 if (mkdir(snapshots_path, 0755) != 0) {
292 free(snapshots_path);
293 printf(" unable to create snapshot dir \"%s\": %s\n",
294 snapshots_path, strerror(errno));
301 * Create missing config file for HAMMER VERSION < 3
304 config_init(path, &config);
305 fp = fopen(config_path, "w");
307 fwrite(config.config.text, 1,
308 strlen(config.config.text), fp);
312 migrate_config(fp, &config);
318 * If snapshots_from_pfs is not set we calculate the new snapshots
319 * directory default (in /var) for HAMMER VERSION >= 3 and migrate
320 * the old snapshots directory over.
322 * People who have set an explicit snapshots directory will have
323 * to migrate the data manually into /var/hammer, or not bother at
324 * all. People running slaves may wish to migrate it and then
325 * clear the snapshots specification in the PFS config for the
328 if (new_config && snapshots_from_pfs == 0) {
331 assert(path[0] == '/');
332 if (strcmp(path, "/") == 0)
333 asprintf(&npath, "%s/root", SNAPSHOTS_BASE);
335 asprintf(&npath, "%s/%s", SNAPSHOTS_BASE, path + 1);
336 if (stat(npath, &st) < 0 && errno == ENOENT) {
337 if (stat(snapshots_path, &st) < 0 && errno == ENOENT) {
338 printf(" HAMMER UPGRADE: Creating snapshots\n"
339 "\tCreating snapshots in %s\n",
341 runcmd(&r, "mkdir -p %s", npath);
343 printf(" HAMMER UPGRADE: Moving snapshots\n"
344 "\tMoving snapshots from %s to %s\n",
345 snapshots_path, npath);
346 runcmd(&r, "mkdir -p %s", npath);
347 runcmd(&r, "cpdup %s %s", snapshots_path, npath);
349 printf("Unable to move snapshots directory!\n");
350 printf("Please fix this critical error.\n");
351 printf("Aborting cleanup of %s\n", path);
355 runcmd(&r, "rm -rf %s", snapshots_path);
358 free(snapshots_path);
359 snapshots_path = npath;
363 * Lock the PFS. fd is the base directory of the mounted PFS.
365 if (flock(fd, LOCK_EX|LOCK_NB) == -1) {
366 if (errno == EWOULDBLOCK)
367 printf(" PFS #%d locked by other process\n", pfs.pfs_id);
369 printf(" can not lock %s: %s\n", config_path, strerror(errno));
374 printf(" handle PFS #%d using %s\n", pfs.pfs_id, snapshots_path);
377 * Process the config file
379 cbase = config.config.text;
381 while ((cptr = strchr(cbase, '\n')) != NULL) {
382 bcopy(cbase, buf, cptr - cbase);
383 buf[cptr - cbase] = 0;
386 cmd = strtok(buf, WS);
390 if ((ptr = strtok(NULL, WS)) != NULL) {
391 arg1 = strtosecs(ptr);
392 if ((ptr = strtok(NULL, WS)) != NULL) {
393 arg2 = strtosecs(ptr);
394 arg3 = strtok(NULL, WS);
398 printf("%20s - ", cmd);
402 if (strcmp(cmd, "snapshots") == 0) {
405 check_softlinks(fd, new_config,
407 printf("only removing old snapshots\n");
409 cleanup_softlinks(fd, new_config,
413 printf("disabled\n");
414 snapshots_disabled = 1;
417 if (check_period(snapshots_path, cmd, arg1, &savet)) {
419 cleanup_softlinks(fd, new_config,
422 r = create_snapshot(path, snapshots_path);
426 } else if (arg1 == 0) {
428 * The commands following this check can't handle
429 * a period of 0, so call the feature disabled and
430 * ignore the directive.
432 printf("disabled\n");
433 } else if (strcmp(cmd, "prune") == 0) {
434 if (check_period(snapshots_path, cmd, arg1, &savet)) {
436 printf("run - WARNING snapshot "
438 "but snapshots disabled\n");
442 r = cleanup_prune(path, snapshots_path,
443 arg1, arg2, snapshots_disabled);
447 } else if (strcmp(cmd, "rebalance") == 0) {
449 if (check_period(snapshots_path, cmd, arg1, &savet)) {
454 r = cleanup_rebalance(path, snapshots_path,
459 } else if (strcmp(cmd, "reblock") == 0) {
460 if (check_period(snapshots_path, cmd, arg1, &savet)) {
465 r = cleanup_reblock(path, snapshots_path,
470 } else if (strcmp(cmd, "recopy") == 0) {
471 if (check_period(snapshots_path, cmd, arg1, &savet)) {
476 r = cleanup_recopy(path, snapshots_path,
482 printf("unknown directive\n");
486 save_period(snapshots_path, cmd, savet);
490 * Add new rebalance feature if the config doesn't have it.
491 * (old style config only).
493 if (new_config == 0 && found_rebal == 0) {
494 if ((fp = fopen(config_path, "r+")) != NULL) {
496 fprintf(fp, "rebalance 1d 5m\n");
502 * Cleanup, and delay a little
509 * Initialize new config data (new or old style)
512 config_init(const char *path, struct hammer_ioc_config *config)
514 const char *snapshots;
516 if (strcmp(path, "/tmp") == 0 ||
517 strcmp(path, "/var/tmp") == 0 ||
518 strcmp(path, "/usr/obj") == 0) {
519 snapshots = "snapshots 0d 0d\n";
521 snapshots = "snapshots 1d 60d\n";
523 bzero(config->config.text, sizeof(config->config.text));
524 snprintf(config->config.text, sizeof(config->config.text) - 1, "%s%s",
530 "rebalance 1d 5m\n");
534 * Migrate configuration data from the old snapshots/config
535 * file to the new mata-data format.
538 migrate_config(FILE *fp, struct hammer_ioc_config *config)
542 n = fread(config->config.text, 1, sizeof(config->config.text) - 1, fp);
544 bzero(config->config.text + n, sizeof(config->config.text) - n);
548 * Migrate snapshot softlinks in the snapshots directory to the
549 * new meta-data format. The softlinks are left intact, but
550 * this way the pruning code won't lose track of them if you
551 * happen to blow away the snapshots directory.
554 migrate_snapshots(int fd, const char *snapshots_path)
556 struct hammer_ioc_snapshot snapshot;
562 bzero(&snapshot, sizeof(snapshot));
564 if ((dir = opendir(snapshots_path)) != NULL) {
565 while ((den = readdir(dir)) != NULL) {
566 if (den->d_name[0] == '.')
568 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
569 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode)) {
570 migrate_one_snapshot(fd, fpath, &snapshot);
576 migrate_one_snapshot(fd, NULL, &snapshot);
581 * Migrate a single snapshot. If fpath is NULL the ioctl is flushed,
582 * otherwise it is flushed when it fills up.
585 migrate_one_snapshot(int fd, const char *fpath,
586 struct hammer_ioc_snapshot *snapshot)
589 struct hammer_snapshot_data *snap;
603 tid = (hammer_tid_t)(int64_t)-1;
606 while (*ptr && *ptr != '-' && *ptr != '.')
610 r = sscanf(ptr, "%4d%2d%2d-%2d%2d",
611 &year, &month, &day, &hour, &minute);
614 bzero(&tm, sizeof(tm));
619 tm.tm_mon = month - 1;
620 tm.tm_year = year - 1900;
623 bzero(linkbuf, sizeof(linkbuf));
624 if (readlink(fpath, linkbuf, sizeof(linkbuf) - 1) > 0 &&
625 (ptr = strrchr(linkbuf, '@')) != NULL &&
626 ptr > linkbuf && ptr[-1] == '@') {
627 tid = strtoull(ptr + 1, NULL, 16);
629 if (t != (time_t)-1 && tid != (hammer_tid_t)(int64_t)-1) {
630 snap = &snapshot->snaps[snapshot->count];
631 bzero(snap, sizeof(*snap));
633 snap->ts = (u_int64_t)t * 1000000ULL;
634 snprintf(snap->label, sizeof(snap->label),
640 if ((fpath == NULL && snapshot->count) ||
641 snapshot->count == HAMMER_SNAPS_PER_IOCTL) {
642 printf(" (%d snapshots)", snapshot->count);
644 if (ioctl(fd, HAMMERIOC_ADD_SNAPSHOT, snapshot) < 0) {
645 printf(" Ioctl to migrate snapshots failed: %s\n",
647 } else if (snapshot->head.error == EALREADY) {
650 } else if (snapshot->head.error) {
651 printf(" Ioctl to migrate snapshots failed: %s\n",
652 strerror(snapshot->head.error));
654 printf("index %d\n", snapshot->index);
657 snapshot->head.error = 0;
667 val = strtol(ptr, &ptr, 0);
681 errx(1, "illegal suffix converting %s\n", ptr);
688 dividing_slash(const char *path)
690 int len = strlen(path);
691 if (len && path[len-1] == '/')
698 * Check whether the desired period has elapsed since the last successful
699 * run. The run may take a while and cross a boundary so we remember the
700 * current time_t so we can save it later on.
702 * Periods in minutes, hours, or days are assumed to have been crossed
703 * if the local time crosses a minute, hour, or day boundary regardless
704 * of how close the last operation actually was.
707 check_period(const char *snapshots_path, const char *cmd, int arg1,
718 localtime_r(savep, &tp1);
721 * Retrieve the start time of the last successful operation.
723 asprintf(&check_path, "%s/.%s.period", snapshots_path, cmd);
724 fp = fopen(check_path, "r");
728 if (fgets(buf, sizeof(buf), fp) == NULL) {
734 lastt = strtol(buf, NULL, 0);
735 localtime_r(&lastt, &tp2);
738 * Normalize the times. e.g. if asked to do something on a 1-day
739 * interval the operation will be performed as soon as the day
740 * turns over relative to the previous operation, even if the previous
741 * operation ran a few seconds ago just before midnight.
743 if (arg1 % 60 == 0) {
747 if (arg1 % (60 * 60) == 0) {
751 if (arg1 % (24 * 60 * 60) == 0) {
756 baset = mktime(&tp1);
757 lastt = mktime(&tp2);
760 printf("%lld vs %lld\n", (long long)(baset - lastt), (long long)arg1);
763 if ((int)(baset - lastt) >= arg1)
769 * Store the start time of the last successful operation.
772 save_period(const char *snapshots_path, const char *cmd,
779 asprintf(&ocheck_path, "%s/.%s.period", snapshots_path, cmd);
780 asprintf(&ncheck_path, "%s/.%s.period.new", snapshots_path, cmd);
781 fp = fopen(ncheck_path, "w");
783 fprintf(fp, "0x%08llx\n", (long long)savet);
785 rename(ncheck_path, ocheck_path);
788 fprintf(stderr, "hammer: Unable to create period-file %s: %s\n",
789 ncheck_path, strerror(errno));
794 * Simply count the number of softlinks in the snapshots dir
797 check_softlinks(int fd, int new_config, const char *snapshots_path)
806 * Old-style softlink-based snapshots
808 if ((dir = opendir(snapshots_path)) != NULL) {
809 while ((den = readdir(dir)) != NULL) {
810 if (den->d_name[0] == '.')
812 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
813 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode))
821 * New-style snapshots are stored as filesystem meta-data,
825 struct hammer_ioc_snapshot snapshot;
827 bzero(&snapshot, sizeof(snapshot));
829 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
830 err(2, "hammer cleanup: check_softlink "
834 res += snapshot.count;
835 } while (snapshot.head.error == 0 && snapshot.count);
841 * Clean up expired softlinks in the snapshots dir
844 cleanup_softlinks(int fd, int new_config,
845 const char *snapshots_path, int arg2, char *arg3)
853 if (arg3 != NULL && strstr(arg3, "any") != NULL)
856 if ((dir = opendir(snapshots_path)) != NULL) {
857 while ((den = readdir(dir)) != NULL) {
858 if (den->d_name[0] == '.')
860 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
861 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode) &&
862 (anylink || strncmp(den->d_name, "snap-", 5) == 0)
864 if (check_expired(den->d_name, arg2)) {
866 printf(" expire %s\n",
878 * New-style snapshots are stored as filesystem meta-data,
882 struct hammer_ioc_snapshot snapshot;
883 struct hammer_ioc_snapshot dsnapshot;
884 struct hammer_snapshot_data *snap;
890 bzero(&snapshot, sizeof(snapshot));
891 bzero(&dsnapshot, sizeof(dsnapshot));
893 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
894 err(2, "hammer cleanup: check_softlink "
898 for (i = 0; i < snapshot.count; ++i) {
899 snap = &snapshot.snaps[i];
900 t = time(NULL) - snap->ts / 1000000ULL;
901 if ((int)t > arg2 && snap->tid != 0) {
902 dsnapshot.snaps[dsnapshot.count++] =
905 if ((int)t > arg2 && VerboseOpt) {
907 strftime(snapts, sizeof(snapts),
908 "%Y-%m-%d %H:%M:%S %Z", tp);
909 printf(" expire 0x%016jx %s %s\n",
910 (uintmax_t)snap->tid,
914 if (dsnapshot.count == HAMMER_SNAPS_PER_IOCTL) {
915 if (ioctl(fd, HAMMERIOC_DEL_SNAPSHOT, &dsnapshot) < 0) {
916 printf(" Ioctl to delete snapshots failed: %s index %d\n", strerror(errno), dsnapshot.index);
917 } else if (dsnapshot.head.error) {
918 printf(" Ioctl to delete snapshots failed: %s\n", strerror(dsnapshot.head.error));
923 dsnapshot.head.error = 0;
926 } while (snapshot.head.error == 0 && snapshot.count);
928 if (dsnapshot.count) {
929 if (ioctl(fd, HAMMERIOC_DEL_SNAPSHOT, &dsnapshot) < 0) {
930 printf(" Ioctl to delete snapshots failed: %s\n", strerror(errno));
931 } else if (dsnapshot.head.error) {
932 printf(" Ioctl to delete snapshots failed: %s\n", strerror(dsnapshot.head.error));
936 dsnapshot.head.error = 0;
942 * Take a softlink path in the form snap-yyyymmdd-hhmm and the
943 * expiration in seconds (arg2) and return non-zero if the softlink
947 check_expired(const char *fpath, int arg2)
958 while (*fpath && *fpath != '-' && *fpath != '.')
963 r = sscanf(fpath, "%4d%2d%2d-%2d%2d",
964 &year, &month, &day, &hour, &minute);
967 bzero(&tm, sizeof(tm));
972 tm.tm_mon = month - 1;
973 tm.tm_year = year - 1900;
988 create_snapshot(const char *path, const char *snapshots_path)
992 runcmd(&r, "hammer snapshot %s %s", path, snapshots_path);
997 cleanup_prune(const char *path __unused, const char *snapshots_path,
998 int arg1 __unused, int arg2, int snapshots_disabled)
1001 * If snapshots have been disabled run prune-everything instead
1004 if (snapshots_disabled && arg2) {
1005 runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune-everything %s",
1006 snapshots_path, arg2, path);
1007 } else if (snapshots_disabled) {
1008 runcmd(NULL, "hammer prune-everything %s", path);
1010 runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune %s",
1011 snapshots_path, arg2, snapshots_path);
1013 runcmd(NULL, "hammer prune %s", snapshots_path);
1019 cleanup_rebalance(const char *path, const char *snapshots_path,
1020 int arg1 __unused, int arg2)
1022 if (VerboseOpt == 0) {
1028 "hammer -c %s/.rebalance.cycle -t %d rebalance %s",
1029 snapshots_path, arg2, path);
1030 if (VerboseOpt == 0) {
1034 if (VerboseOpt == 0)
1040 cleanup_reblock(const char *path, const char *snapshots_path,
1041 int arg1 __unused, int arg2)
1043 if (VerboseOpt == 0) {
1049 * When reblocking the B-Tree always reblock everything in normal
1053 "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s",
1054 snapshots_path, arg2, path);
1055 if (VerboseOpt == 0) {
1061 * When reblocking the inodes always reblock everything in normal
1065 "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s",
1066 snapshots_path, arg2, path);
1067 if (VerboseOpt == 0) {
1073 * When reblocking the directories always reblock everything in normal
1077 "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s",
1078 snapshots_path, arg2, path);
1079 if (VerboseOpt == 0) {
1085 * Do not reblock all the data in normal mode.
1088 "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95",
1089 snapshots_path, arg2, path);
1090 if (VerboseOpt == 0)
1096 cleanup_recopy(const char *path, const char *snapshots_path,
1097 int arg1 __unused, int arg2)
1099 if (VerboseOpt == 0) {
1104 "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s",
1105 snapshots_path, arg2, path);
1106 if (VerboseOpt == 0) {
1111 "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s",
1112 snapshots_path, arg2, path);
1113 if (VerboseOpt == 0) {
1118 "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s",
1119 snapshots_path, arg2, path);
1120 if (VerboseOpt == 0) {
1125 "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s",
1126 snapshots_path, arg2, path);
1127 if (VerboseOpt == 0)
1134 runcmd(int *resp, const char *ctl, ...)
1146 * Generate the command
1149 vasprintf(&cmd, ctl, va);
1152 printf(" %s\n", cmd);
1155 * Break us down into arguments. We do not just use system() here
1156 * because it blocks SIGINT and friends.
1160 av = malloc(sizeof(char *) * nmax);
1162 for (arg = strtok(cmd, WS); arg; arg = strtok(NULL, WS)) {
1163 if (n == nmax - 1) {
1165 av = realloc(av, sizeof(char *) * nmax);
1175 if ((pid = fork()) == 0) {
1176 if (VerboseOpt < 2) {
1177 int fd = open("/dev/null", O_RDWR);
1183 } else if (pid < 0) {
1188 while (waitpid(pid, &status, 0) != pid)
1190 res = WEXITSTATUS(status);