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 specific HAMMER filesystems or all HAMMER filesystems.
39 * If no filesystems are specified any HAMMER- or null-mounted hammer PFS's
42 * Each HAMMER filesystem may contain a configuration file. If no
43 * configuration file is present one will be created with the following
46 * snapshots 1d 60d (0d 0d for /tmp, /var/tmp, /usr/obj)
52 * All hammer commands create and maintain cycle files in the snapshots
55 * For HAMMER version 2- the configuration file is a named 'config' in
56 * the snapshots directory, which defaults to <pfs>/snapshots.
57 * For HAMMER version 3+ the configuration file is saved in filesystem
58 * meta-data. The snapshots directory defaults to /var/hammer/<pfs>
59 * (/var/hammer/root for root mount).
69 static void do_cleanup(const char *path);
70 static void config_init(const char *path, struct hammer_ioc_config *config);
71 static void migrate_config(FILE *fp, struct hammer_ioc_config *config);
72 static void migrate_snapshots(int fd, const char *snapshots_path);
73 static void migrate_one_snapshot(int fd, const char *fpath,
74 struct hammer_ioc_snapshot *snapshot);
75 static int strtosecs(char *ptr);
76 static const char *dividing_slash(const char *path);
77 static int check_period(const char *snapshots_path, const char *cmd, int arg1,
79 static void save_period(const char *snapshots_path, const char *cmd,
81 static int check_softlinks(int fd, int new_config, const char *snapshots_path);
82 static void cleanup_softlinks(int fd, int new_config,
83 const char *snapshots_path, int arg2, char *arg3);
84 static void delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot);
85 static int check_expired(const char *fpath, int arg2);
87 static int create_snapshot(const char *path, const char *snapshots_path);
88 static int cleanup_rebalance(const char *path, const char *snapshots_path,
90 static int cleanup_prune(const char *path, const char *snapshots_path,
91 int arg1, int arg2, int snapshots_disabled);
92 static int cleanup_reblock(const char *path, const char *snapshots_path,
94 static int cleanup_recopy(const char *path, const char *snapshots_path,
97 static void runcmd(int *resp, const char *ctl, ...);
100 * WARNING: Do not make the SNAPSHOTS_BASE "/var/snapshots" because
101 * it will interfere with the older HAMMER VERS < 3 snapshots directory
104 #define SNAPSHOTS_BASE "/var/hammer" /* HAMMER VERS >= 3 */
107 struct didpfs *FirstPFS;
110 hammer_cmd_cleanup(char **av, int ac)
112 char *fstype, *fs, *path;
113 struct statfs *stfsbuf;
118 mntsize = getmntinfo(&stfsbuf, MNT_NOWAIT);
120 for (i=0; i < mntsize; i++) {
122 * We will cleanup in the case fstype is hammer.
123 * If we have null-mounted PFS, we check the
124 * mount source. If it looks like a PFS, we
125 * proceed to cleanup also.
127 fstype = stfsbuf[i].f_fstypename;
128 fs = stfsbuf[i].f_mntfromname;
129 if ((strcmp(fstype, "hammer") == 0) ||
130 ((strcmp(fstype, "null") == 0) &&
131 (strstr(fs, "/@@0x") != NULL ||
132 strstr(fs, "/@@-1") != NULL))) {
133 path = stfsbuf[i].f_mntonname;
150 do_cleanup(const char *path)
152 struct hammer_ioc_pseudofs_rw pfs;
153 struct hammer_ioc_config config;
154 struct hammer_ioc_version version;
155 union hammer_ioc_mrecord_any mrec_tmp;
156 char *snapshots_path = NULL;
169 struct didpfs *didpfs;
170 int snapshots_disabled = 0;
171 int prune_warning = 0;
173 int snapshots_from_pfs = 0;
178 bzero(&pfs, sizeof(pfs));
179 bzero(&mrec_tmp, sizeof(mrec_tmp));
180 pfs.ondisk = &mrec_tmp.pfs.pfsd;
181 pfs.bytes = sizeof(mrec_tmp.pfs.pfsd);
184 printf("cleanup %-20s -", path);
185 fd = open(path, O_RDONLY);
187 printf(" unable to access directory: %s\n", strerror(errno));
190 if (ioctl(fd, HAMMERIOC_GET_PSEUDOFS, &pfs) < 0) {
191 printf(" not a HAMMER filesystem: %s\n", strerror(errno));
195 if (pfs.version != HAMMER_IOC_PSEUDOFS_VERSION) {
196 printf(" unrecognized HAMMER version\n");
200 bzero(&version, sizeof(version));
201 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
202 printf(" HAMMER filesystem but couldn't retrieve version!\n");
207 bzero(&config, sizeof(config));
208 if (version.cur_version >= 3) {
209 if (ioctl(fd, HAMMERIOC_GET_CONFIG, &config) == 0 &&
210 config.head.error == 0) {
216 * Make sure we have not already handled this PFS. Several nullfs
217 * mounts might alias the same PFS.
219 for (didpfs = FirstPFS; didpfs; didpfs = didpfs->next) {
220 if (bcmp(&didpfs->uuid, &mrec_tmp.pfs.pfsd.unique_uuid, sizeof(uuid_t)) == 0) {
221 printf(" PFS #%d already handled\n", pfs.pfs_id);
226 didpfs = malloc(sizeof(*didpfs));
227 didpfs->next = FirstPFS;
229 didpfs->uuid = mrec_tmp.pfs.pfsd.unique_uuid;
232 * Calculate the old snapshots directory for HAMMER VERSION < 3
234 * If the directory is explicitly specified in the PFS config
235 * we flag it and will not migrate it later.
237 if (mrec_tmp.pfs.pfsd.snapshots[0] == '/') {
238 asprintf(&snapshots_path, "%s", mrec_tmp.pfs.pfsd.snapshots);
239 snapshots_from_pfs = 1;
240 } else if (mrec_tmp.pfs.pfsd.snapshots[0]) {
241 printf(" WARNING: pfs-slave's snapshots dir is not absolute\n");
244 } else if (mrec_tmp.pfs.pfsd.mirror_flags & HAMMER_PFSD_SLAVE) {
245 if (version.cur_version < 3) {
246 printf(" WARNING: must configure snapshot dir for PFS slave\n");
247 printf("\tWe suggest <fs>/var/slaves/<name> where "
248 "<fs> is the base HAMMER fs\n");
249 printf("\tcontaining the slave\n");
254 asprintf(&snapshots_path,
255 "%s%ssnapshots", path, dividing_slash(path));
259 * Check for old-style config file
261 if (snapshots_path) {
262 asprintf(&config_path, "%s/config", snapshots_path);
263 fp = fopen(config_path, "r");
267 * Handle upgrades to hammer version 3, move the config
268 * file into meta-data.
270 * For the old config read the file into the config structure,
271 * we will parse it out of the config structure regardless.
273 if (version.cur_version >= 3) {
275 printf("(migrating) ");
277 migrate_config(fp, &config);
278 migrate_snapshots(fd, snapshots_path);
280 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
281 printf(" cannot init meta-data config!\n");
286 } else if (new_config == 0) {
287 config_init(path, &config);
288 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
289 printf(" cannot init meta-data config!\n");
297 * Create missing snapshots directory for HAMMER VERSION < 3
299 if (stat(snapshots_path, &st) < 0) {
300 if (mkdir(snapshots_path, 0755) != 0) {
301 free(snapshots_path);
302 printf(" unable to create snapshot dir \"%s\": %s\n",
303 snapshots_path, strerror(errno));
310 * Create missing config file for HAMMER VERSION < 3
313 config_init(path, &config);
314 fp = fopen(config_path, "w");
316 fwrite(config.config.text, 1,
317 strlen(config.config.text), fp);
321 migrate_config(fp, &config);
327 * If snapshots_from_pfs is not set we calculate the new snapshots
328 * directory default (in /var) for HAMMER VERSION >= 3 and migrate
329 * the old snapshots directory over.
331 * People who have set an explicit snapshots directory will have
332 * to migrate the data manually into /var/hammer, or not bother at
333 * all. People running slaves may wish to migrate it and then
334 * clear the snapshots specification in the PFS config for the
337 if (new_config && snapshots_from_pfs == 0) {
340 assert(path[0] == '/');
341 if (strcmp(path, "/") == 0)
342 asprintf(&npath, "%s/root", SNAPSHOTS_BASE);
344 asprintf(&npath, "%s/%s", SNAPSHOTS_BASE, path + 1);
345 if (snapshots_path) {
346 if (stat(npath, &st) < 0 && errno == ENOENT) {
347 if (stat(snapshots_path, &st) < 0 && errno == ENOENT) {
348 printf(" HAMMER UPGRADE: Creating snapshots\n"
349 "\tCreating snapshots in %s\n",
351 runcmd(&r, "mkdir -p %s", npath);
353 printf(" HAMMER UPGRADE: Moving snapshots\n"
354 "\tMoving snapshots from %s to %s\n",
355 snapshots_path, npath);
356 runcmd(&r, "mkdir -p %s", npath);
357 runcmd(&r, "cpdup %s %s", snapshots_path, npath);
359 printf("Unable to move snapshots directory!\n");
360 printf("Please fix this critical error.\n");
361 printf("Aborting cleanup of %s\n", path);
365 runcmd(&r, "rm -rf %s", snapshots_path);
368 free(snapshots_path);
369 } else if (stat(npath, &st) < 0 && errno == ENOENT) {
370 runcmd(&r, "mkdir -p %s", npath);
372 snapshots_path = npath;
376 * Lock the PFS. fd is the base directory of the mounted PFS.
378 if (flock(fd, LOCK_EX|LOCK_NB) == -1) {
379 if (errno == EWOULDBLOCK)
380 printf(" PFS #%d locked by other process\n", pfs.pfs_id);
382 printf(" can not lock %s: %s\n", config_path, strerror(errno));
387 printf(" handle PFS #%d using %s\n", pfs.pfs_id, snapshots_path);
390 * Process the config file
392 cbase = config.config.text;
394 while ((cptr = strchr(cbase, '\n')) != NULL) {
395 bcopy(cbase, buf, cptr - cbase);
396 buf[cptr - cbase] = 0;
399 cmd = strtok(buf, WS);
400 if (cmd == NULL || cmd[0] == '#')
406 if ((ptr = strtok(NULL, WS)) != NULL) {
407 arg1 = strtosecs(ptr);
408 if ((ptr = strtok(NULL, WS)) != NULL) {
409 arg2 = strtosecs(ptr);
410 arg3 = strtok(NULL, WS);
414 printf("%20s - ", cmd);
418 if (strcmp(cmd, "snapshots") == 0) {
421 check_softlinks(fd, new_config,
423 printf("only removing old snapshots\n");
425 cleanup_softlinks(fd, new_config,
429 printf("disabled\n");
430 snapshots_disabled = 1;
433 if (check_period(snapshots_path, cmd, arg1, &savet)) {
435 cleanup_softlinks(fd, new_config,
438 r = create_snapshot(path, snapshots_path);
442 } else if (arg1 == 0) {
444 * The commands following this check can't handle
445 * a period of 0, so call the feature disabled and
446 * ignore the directive.
448 printf("disabled\n");
449 } else if (strcmp(cmd, "prune") == 0) {
450 if (check_period(snapshots_path, cmd, arg1, &savet)) {
452 printf("run - WARNING snapshot "
454 "but snapshots disabled\n");
458 r = cleanup_prune(path, snapshots_path,
459 arg1, arg2, snapshots_disabled);
463 } else if (strcmp(cmd, "rebalance") == 0) {
465 if (check_period(snapshots_path, cmd, arg1, &savet)) {
470 r = cleanup_rebalance(path, snapshots_path,
475 } else if (strcmp(cmd, "reblock") == 0) {
476 if (check_period(snapshots_path, cmd, arg1, &savet)) {
481 r = cleanup_reblock(path, snapshots_path,
486 } else if (strcmp(cmd, "recopy") == 0) {
487 if (check_period(snapshots_path, cmd, arg1, &savet)) {
492 r = cleanup_recopy(path, snapshots_path,
498 printf("unknown directive\n");
502 save_period(snapshots_path, cmd, savet);
506 * Add new rebalance feature if the config doesn't have it.
507 * (old style config only).
509 if (new_config == 0 && found_rebal == 0) {
510 if ((fp = fopen(config_path, "r+")) != NULL) {
512 fprintf(fp, "rebalance 1d 5m\n");
518 * Cleanup, and delay a little
525 * Initialize new config data (new or old style)
528 config_init(const char *path, struct hammer_ioc_config *config)
530 const char *snapshots;
532 if (strcmp(path, "/tmp") == 0 ||
533 strcmp(path, "/var/tmp") == 0 ||
534 strcmp(path, "/usr/obj") == 0) {
535 snapshots = "snapshots 0d 0d\n";
537 snapshots = "snapshots 1d 60d\n";
539 bzero(config->config.text, sizeof(config->config.text));
540 snprintf(config->config.text, sizeof(config->config.text) - 1, "%s%s",
549 * Migrate configuration data from the old snapshots/config
550 * file to the new meta-data format.
553 migrate_config(FILE *fp, struct hammer_ioc_config *config)
557 n = fread(config->config.text, 1, sizeof(config->config.text) - 1, fp);
559 bzero(config->config.text + n, sizeof(config->config.text) - n);
563 * Migrate snapshot softlinks in the snapshots directory to the
564 * new meta-data format. The softlinks are left intact, but
565 * this way the pruning code won't lose track of them if you
566 * happen to blow away the snapshots directory.
569 migrate_snapshots(int fd, const char *snapshots_path)
571 struct hammer_ioc_snapshot snapshot;
577 bzero(&snapshot, sizeof(snapshot));
579 if ((dir = opendir(snapshots_path)) != NULL) {
580 while ((den = readdir(dir)) != NULL) {
581 if (den->d_name[0] == '.')
583 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
584 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode)) {
585 migrate_one_snapshot(fd, fpath, &snapshot);
591 migrate_one_snapshot(fd, NULL, &snapshot);
596 * Migrate a single snapshot. If fpath is NULL the ioctl is flushed,
597 * otherwise it is flushed when it fills up.
600 migrate_one_snapshot(int fd, const char *fpath,
601 struct hammer_ioc_snapshot *snapshot)
604 struct hammer_snapshot_data *snap;
618 tid = (hammer_tid_t)(int64_t)-1;
620 /* fpath may contain directory components */
621 if ((ptr = strrchr(fpath, '/')) != NULL)
625 while (*ptr && *ptr != '-' && *ptr != '.')
629 r = sscanf(ptr, "%4d%2d%2d-%2d%2d",
630 &year, &month, &day, &hour, &minute);
633 bzero(&tm, sizeof(tm));
638 tm.tm_mon = month - 1;
639 tm.tm_year = year - 1900;
642 bzero(linkbuf, sizeof(linkbuf));
643 if (readlink(fpath, linkbuf, sizeof(linkbuf) - 1) > 0 &&
644 (ptr = strrchr(linkbuf, '@')) != NULL &&
645 ptr > linkbuf && ptr[-1] == '@') {
646 tid = strtoull(ptr + 1, NULL, 16);
648 if (t != (time_t)-1 && tid != (hammer_tid_t)(int64_t)-1) {
649 snap = &snapshot->snaps[snapshot->count];
650 bzero(snap, sizeof(*snap));
652 snap->ts = (u_int64_t)t * 1000000ULL;
653 snprintf(snap->label, sizeof(snap->label),
657 printf(" non-canonical snapshot softlink: %s->%s\n",
662 if ((fpath == NULL && snapshot->count) ||
663 snapshot->count == HAMMER_SNAPS_PER_IOCTL) {
664 printf(" (%d snapshots)", snapshot->count);
666 if (ioctl(fd, HAMMERIOC_ADD_SNAPSHOT, snapshot) < 0) {
667 printf(" Ioctl to migrate snapshots failed: %s\n",
669 } else if (snapshot->head.error == EALREADY) {
672 } else if (snapshot->head.error) {
673 printf(" Ioctl to migrate snapshots failed: %s\n",
674 strerror(snapshot->head.error));
676 printf("index %d\n", snapshot->index);
679 snapshot->head.error = 0;
689 val = strtol(ptr, &ptr, 0);
703 errx(1, "illegal suffix converting %s\n", ptr);
710 dividing_slash(const char *path)
712 int len = strlen(path);
713 if (len && path[len-1] == '/')
720 * Check whether the desired period has elapsed since the last successful
721 * run. The run may take a while and cross a boundary so we remember the
722 * current time_t so we can save it later on.
724 * Periods in minutes, hours, or days are assumed to have been crossed
725 * if the local time crosses a minute, hour, or day boundary regardless
726 * of how close the last operation actually was.
729 check_period(const char *snapshots_path, const char *cmd, int arg1,
740 localtime_r(savep, &tp1);
743 * Retrieve the start time of the last successful operation.
745 asprintf(&check_path, "%s/.%s.period", snapshots_path, cmd);
746 fp = fopen(check_path, "r");
750 if (fgets(buf, sizeof(buf), fp) == NULL) {
756 lastt = strtol(buf, NULL, 0);
757 localtime_r(&lastt, &tp2);
760 * Normalize the times. e.g. if asked to do something on a 1-day
761 * interval the operation will be performed as soon as the day
762 * turns over relative to the previous operation, even if the previous
763 * operation ran a few seconds ago just before midnight.
765 if (arg1 % 60 == 0) {
769 if (arg1 % (60 * 60) == 0) {
773 if (arg1 % (24 * 60 * 60) == 0) {
778 baset = mktime(&tp1);
779 lastt = mktime(&tp2);
782 printf("%lld vs %lld\n", (long long)(baset - lastt), (long long)arg1);
785 if ((int)(baset - lastt) >= arg1)
791 * Store the start time of the last successful operation.
794 save_period(const char *snapshots_path, const char *cmd,
801 asprintf(&ocheck_path, "%s/.%s.period", snapshots_path, cmd);
802 asprintf(&ncheck_path, "%s/.%s.period.new", snapshots_path, cmd);
803 fp = fopen(ncheck_path, "w");
805 fprintf(fp, "0x%08llx\n", (long long)savet);
807 rename(ncheck_path, ocheck_path);
810 fprintf(stderr, "hammer: Unable to create period-file %s: %s\n",
811 ncheck_path, strerror(errno));
816 * Simply count the number of softlinks in the snapshots dir
819 check_softlinks(int fd, int new_config, const char *snapshots_path)
828 * Old-style softlink-based snapshots
830 if ((dir = opendir(snapshots_path)) != NULL) {
831 while ((den = readdir(dir)) != NULL) {
832 if (den->d_name[0] == '.')
834 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
835 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode))
843 * New-style snapshots are stored as filesystem meta-data,
847 struct hammer_ioc_snapshot snapshot;
849 bzero(&snapshot, sizeof(snapshot));
851 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
852 err(2, "hammer cleanup: check_softlink "
856 res += snapshot.count;
857 } while (snapshot.head.error == 0 && snapshot.count);
863 * Clean up expired softlinks in the snapshots dir
866 cleanup_softlinks(int fd, int new_config,
867 const char *snapshots_path, int arg2, char *arg3)
875 if (arg3 != NULL && strstr(arg3, "any") != NULL)
878 if ((dir = opendir(snapshots_path)) != NULL) {
879 while ((den = readdir(dir)) != NULL) {
880 if (den->d_name[0] == '.')
882 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
883 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode) &&
884 (anylink || strncmp(den->d_name, "snap-", 5) == 0)
886 if (check_expired(den->d_name, arg2)) {
888 printf(" expire %s\n",
900 * New-style snapshots are stored as filesystem meta-data,
904 struct hammer_ioc_snapshot snapshot;
905 struct hammer_ioc_snapshot dsnapshot;
906 struct hammer_snapshot_data *snap;
913 bzero(&snapshot, sizeof(snapshot));
914 bzero(&dsnapshot, sizeof(dsnapshot));
916 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
917 err(2, "hammer cleanup: check_softlink "
921 for (i = 0; i < snapshot.count; ++i) {
922 snap = &snapshot.snaps[i];
923 t = snap->ts / 1000000ULL;
925 if ((int)dt > arg2 || snap->tid == 0) {
926 dsnapshot.snaps[dsnapshot.count++] =
929 if ((int)dt > arg2 && VerboseOpt) {
931 strftime(snapts, sizeof(snapts),
932 "%Y-%m-%d %H:%M:%S %Z", tp);
933 printf(" expire 0x%016jx %s %s\n",
934 (uintmax_t)snap->tid,
938 if (dsnapshot.count == HAMMER_SNAPS_PER_IOCTL)
939 delete_snapshots(fd, &dsnapshot);
941 } while (snapshot.head.error == 0 && snapshot.count);
944 delete_snapshots(fd, &dsnapshot);
949 delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot)
952 if (ioctl(fd, HAMMERIOC_DEL_SNAPSHOT, dsnapshot) < 0) {
953 printf(" Ioctl to delete snapshots failed: %s\n",
957 if (dsnapshot->head.error) {
958 printf(" Ioctl to delete snapshots failed at "
960 dsnapshot->snaps[dsnapshot->index].tid,
961 strerror(dsnapshot->head.error));
962 if (++dsnapshot->index < dsnapshot->count)
967 dsnapshot->index = 0;
968 dsnapshot->count = 0;
969 dsnapshot->head.error = 0;
973 * Take a softlink path in the form snap-yyyymmdd-hhmm and the
974 * expiration in seconds (arg2) and return non-zero if the softlink
978 check_expired(const char *fpath, int arg2)
989 while (*fpath && *fpath != '-' && *fpath != '.')
994 r = sscanf(fpath, "%4d%2d%2d-%2d%2d",
995 &year, &month, &day, &hour, &minute);
998 bzero(&tm, sizeof(tm));
1003 tm.tm_mon = month - 1;
1004 tm.tm_year = year - 1900;
1006 if (t == (time_t)-1)
1019 create_snapshot(const char *path, const char *snapshots_path)
1023 runcmd(&r, "hammer snapshot %s %s", path, snapshots_path);
1028 cleanup_prune(const char *path __unused, const char *snapshots_path,
1029 int arg1 __unused, int arg2, int snapshots_disabled)
1032 * If snapshots have been disabled run prune-everything instead
1035 if (snapshots_disabled && arg2) {
1036 runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune-everything %s",
1037 snapshots_path, arg2, path);
1038 } else if (snapshots_disabled) {
1039 runcmd(NULL, "hammer prune-everything %s", path);
1041 runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune %s",
1042 snapshots_path, arg2, snapshots_path);
1044 runcmd(NULL, "hammer prune %s", snapshots_path);
1050 cleanup_rebalance(const char *path, const char *snapshots_path,
1051 int arg1 __unused, int arg2)
1053 if (VerboseOpt == 0) {
1059 "hammer -c %s/.rebalance.cycle -t %d rebalance %s",
1060 snapshots_path, arg2, path);
1061 if (VerboseOpt == 0) {
1065 if (VerboseOpt == 0)
1071 cleanup_reblock(const char *path, const char *snapshots_path,
1072 int arg1 __unused, int arg2)
1074 if (VerboseOpt == 0) {
1080 * When reblocking the B-Tree always reblock everything in normal
1084 "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s",
1085 snapshots_path, arg2, path);
1086 if (VerboseOpt == 0) {
1092 * When reblocking the inodes always reblock everything in normal
1096 "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s",
1097 snapshots_path, arg2, path);
1098 if (VerboseOpt == 0) {
1104 * When reblocking the directories always reblock everything in normal
1108 "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s",
1109 snapshots_path, arg2, path);
1110 if (VerboseOpt == 0) {
1116 * Do not reblock all the data in normal mode.
1119 "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95",
1120 snapshots_path, arg2, path);
1121 if (VerboseOpt == 0)
1127 cleanup_recopy(const char *path, const char *snapshots_path,
1128 int arg1 __unused, int arg2)
1130 if (VerboseOpt == 0) {
1135 "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s",
1136 snapshots_path, arg2, path);
1137 if (VerboseOpt == 0) {
1142 "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s",
1143 snapshots_path, arg2, path);
1144 if (VerboseOpt == 0) {
1149 "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s",
1150 snapshots_path, arg2, path);
1151 if (VerboseOpt == 0) {
1156 "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s",
1157 snapshots_path, arg2, path);
1158 if (VerboseOpt == 0)
1165 runcmd(int *resp, const char *ctl, ...)
1177 * Generate the command
1180 vasprintf(&cmd, ctl, va);
1183 printf(" %s\n", cmd);
1186 * Break us down into arguments. We do not just use system() here
1187 * because it blocks SIGINT and friends.
1191 av = malloc(sizeof(char *) * nmax);
1193 for (arg = strtok(cmd, WS); arg; arg = strtok(NULL, WS)) {
1194 if (n == nmax - 1) {
1196 av = realloc(av, sizeof(char *) * nmax);
1206 if ((pid = fork()) == 0) {
1207 if (VerboseOpt < 2) {
1208 int fd = open("/dev/null", O_RDWR);
1214 } else if (pid < 0) {
1219 while (waitpid(pid, &status, 0) != pid)
1221 res = WEXITSTATUS(status);