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
35 * Clean up specific HAMMER filesystems or all HAMMER filesystems.
37 * If no filesystems are specified any HAMMER- or null-mounted hammer PFS's
40 * Each HAMMER filesystem may contain a configuration file. If no
41 * configuration file is present one will be created with the following
44 * snapshots 1d 60d (0d 0d for /tmp, /var/tmp, /usr/obj)
47 * #dedup 1d 5m (not enabled by default)
51 * All hammer commands create and maintain cycle files in the snapshots
54 * For HAMMER version 2- the configuration file is a named 'config' in
55 * the snapshots directory, which defaults to <pfs>/snapshots.
56 * For HAMMER version 3+ the configuration file is saved in filesystem
57 * meta-data. The snapshots directory defaults to /var/hammer/<pfs>
58 * (/var/hammer/root for root mount).
70 static void do_cleanup(const char *path);
71 static void config_init(const char *path, struct hammer_ioc_config *config);
72 static void migrate_config(FILE *fp, struct hammer_ioc_config *config);
73 static void migrate_snapshots(int fd, const char *snapshots_path);
74 static void migrate_one_snapshot(int fd, const char *fpath,
75 struct hammer_ioc_snapshot *snapshot);
76 static int strtosecs(char *ptr);
77 static const char *dividing_slash(const char *path);
78 static int check_period(const char *snapshots_path, const char *cmd, int arg1,
80 static void save_period(const char *snapshots_path, const char *cmd,
82 static int check_softlinks(int fd, int new_config, const char *snapshots_path);
83 static void cleanup_softlinks(int fd, int new_config,
84 const char *snapshots_path, int arg2, char *arg3);
85 static void delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot);
86 static int check_expired(const char *fpath, int arg2);
88 static int create_snapshot(const char *path, const char *snapshots_path);
89 static int cleanup_rebalance(const char *path, const char *snapshots_path,
91 static int cleanup_prune(const char *path, const char *snapshots_path,
92 int arg1, int arg2, int snapshots_disabled);
93 static int cleanup_reblock(const char *path, const char *snapshots_path,
95 static int cleanup_recopy(const char *path, const char *snapshots_path,
97 static int cleanup_dedup(const char *path, const char *snapshots_path,
100 static void runcmd(int *resp, const char *ctl, ...) __printflike(2, 3);
104 struct didpfs *FirstPFS;
107 hammer_cmd_cleanup(char **av, int ac)
109 char *fstype, *fs, *path;
110 struct statfs *stfsbuf;
115 mntsize = getmntinfo(&stfsbuf, MNT_NOWAIT);
117 for (i=0; i < mntsize; i++) {
119 * We will cleanup in the case fstype is hammer.
120 * If we have null-mounted PFS, we check the
121 * mount source. If it looks like a PFS, we
122 * proceed to cleanup also.
124 fstype = stfsbuf[i].f_fstypename;
125 fs = stfsbuf[i].f_mntfromname;
126 if ((strcmp(fstype, "hammer") == 0) ||
127 ((strcmp(fstype, "null") == 0) &&
128 (strstr(fs, "/@@0x") != NULL ||
129 strstr(fs, "/@@-1") != NULL))) {
130 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 = NULL;
164 struct didpfs *didpfs;
165 int snapshots_disabled = 0;
166 int prune_warning = 0;
168 int snapshots_from_pfs = 0;
173 bzero(&mrec_tmp, sizeof(mrec_tmp));
174 clrpfs(&pfs, &mrec_tmp.pfs.pfsd, -1);
176 printf("cleanup %-20s -", path);
177 fd = open(path, O_RDONLY);
179 printf(" unable to access directory: %s\n", strerror(errno));
182 if (ioctl(fd, HAMMERIOC_GET_PSEUDOFS, &pfs) < 0) {
183 printf(" not a HAMMER filesystem: %s\n", strerror(errno));
187 if (pfs.version != HAMMER_IOC_PSEUDOFS_VERSION) {
188 printf(" unrecognized HAMMER version\n");
192 bzero(&version, sizeof(version));
193 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
194 printf(" HAMMER filesystem but couldn't retrieve version!\n");
198 HammerVersion = version.cur_version;
200 bzero(&config, sizeof(config));
201 if (version.cur_version >= 3)
202 if (ioctl(fd, HAMMERIOC_GET_CONFIG, &config) == 0 &&
203 config.head.error == 0)
207 * Make sure we have not already handled this PFS. Several nullfs
208 * mounts might alias the same PFS.
210 for (didpfs = FirstPFS; didpfs; didpfs = didpfs->next)
211 if (bcmp(&didpfs->uuid, &mrec_tmp.pfs.pfsd.unique_uuid, sizeof(uuid_t)) == 0) {
212 printf(" PFS#%d already handled\n", pfs.pfs_id);
216 didpfs = malloc(sizeof(*didpfs));
217 didpfs->next = FirstPFS;
219 didpfs->uuid = mrec_tmp.pfs.pfsd.unique_uuid;
222 * Calculate the old snapshots directory for HAMMER VERSION < 3
224 * If the directory is explicitly specified in the PFS config
225 * we flag it and will not migrate it later.
227 if (mrec_tmp.pfs.pfsd.snapshots[0] == '/') {
228 asprintf(&snapshots_path, "%s", mrec_tmp.pfs.pfsd.snapshots);
229 snapshots_from_pfs = 1;
230 } else if (mrec_tmp.pfs.pfsd.snapshots[0]) {
231 printf(" WARNING: pfs-slave's snapshots dir is not absolute\n");
234 } else if (hammer_is_pfs_slave(&mrec_tmp.pfs.pfsd)) {
235 if (version.cur_version < 3) {
236 printf(" WARNING: must configure snapshot dir for PFS slave\n");
237 printf("\tWe suggest <fs>/var/slaves/<name> where "
238 "<fs> is the base HAMMER fs\n");
239 printf("\tcontaining the slave\n");
244 asprintf(&snapshots_path,
245 "%s%ssnapshots", path, dividing_slash(path));
249 * Check for old-style config file
251 if (snapshots_path) {
252 asprintf(&config_path, "%s/config", snapshots_path);
253 fp = fopen(config_path, "r");
257 * Handle upgrades to hammer version 3, move the config
258 * file into meta-data.
260 * For the old config read the file into the config structure,
261 * we will parse it out of the config structure regardless.
263 if (version.cur_version >= 3) {
265 printf("(migrating) ");
267 migrate_config(fp, &config);
268 migrate_snapshots(fd, snapshots_path);
270 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
271 printf(" cannot init meta-data config!\n");
276 } else if (new_config == 0) {
277 config_init(path, &config);
278 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
279 printf(" cannot init meta-data config!\n");
287 * Create missing snapshots directory for HAMMER VERSION < 3
289 if (stat(snapshots_path, &st) < 0)
290 if (mkdir(snapshots_path, 0755) != 0) {
291 free(snapshots_path);
292 printf(" unable to create snapshot dir \"%s\": %s\n",
293 snapshots_path, strerror(errno));
299 * Create missing config file for HAMMER VERSION < 3
302 config_init(path, &config);
303 fp = fopen(config_path, "w");
305 fwrite(config.config.text, 1,
306 strlen(config.config.text), fp);
310 migrate_config(fp, &config);
316 * If snapshots_from_pfs is not set we calculate the new snapshots
317 * directory default (in /var) for HAMMER VERSION >= 3 and migrate
318 * the old snapshots directory over.
320 * People who have set an explicit snapshots directory will have
321 * to migrate the data manually into /var/hammer, or not bother at
322 * all. People running slaves may wish to migrate it and then
323 * clear the snapshots specification in the PFS config for the
326 if (new_config && snapshots_from_pfs == 0) {
329 if (path[0] != '/') {
330 printf(" path must start with '/'\n");
333 if (strcmp(path, "/") == 0)
334 asprintf(&npath, "%s/root", SNAPSHOTS_BASE);
336 asprintf(&npath, "%s/%s", SNAPSHOTS_BASE, path + 1);
337 if (snapshots_path) {
338 if (stat(npath, &st) < 0 && errno == ENOENT) {
339 if (stat(snapshots_path, &st) < 0 && errno == ENOENT) {
340 printf(" HAMMER UPGRADE: Creating snapshots\n"
341 "\tCreating snapshots in %s\n",
343 runcmd(&r, "mkdir -p %s", npath);
345 printf(" HAMMER UPGRADE: Moving snapshots\n"
346 "\tMoving snapshots from %s to %s\n",
347 snapshots_path, npath);
348 runcmd(&r, "mkdir -p %s", npath);
349 runcmd(&r, "cpdup %s %s", snapshots_path, npath);
351 printf("Unable to move snapshots directory!\n");
352 printf("Please fix this critical error.\n");
353 printf("Aborting cleanup of %s\n", path);
357 runcmd(&r, "rm -rf %s", snapshots_path);
360 free(snapshots_path);
361 } else if (stat(npath, &st) < 0 && errno == ENOENT) {
362 runcmd(&r, "mkdir -p %s", npath);
364 snapshots_path = npath;
368 * Lock the PFS. fd is the base directory of the mounted PFS.
370 if (flock(fd, LOCK_EX|LOCK_NB) == -1) {
371 if (errno == EWOULDBLOCK)
372 printf(" PFS#%d locked by other process\n", pfs.pfs_id);
374 printf(" can not lock %s: %s\n", config_path, strerror(errno));
379 printf(" handle PFS#%d using %s\n", pfs.pfs_id, snapshots_path);
381 struct pidfh *pfh = NULL;
382 static char pidfile[PIDFILE_BUFSIZE];
384 snprintf (pidfile, PIDFILE_BUFSIZE, "%s/hammer.cleanup.%d",
385 pidfile_loc, getpid());
386 pfh = pidfile_open(pidfile, 0644, NULL);
388 warn ("Unable to open or create %s", pidfile);
392 * Process the config file
394 cbase = config.config.text;
396 while ((cptr = strchr(cbase, '\n')) != NULL) {
397 bcopy(cbase, buf, cptr - cbase);
398 buf[cptr - cbase] = 0;
401 cmd = strtok(buf, WS);
402 if (cmd == NULL || cmd[0] == '#')
408 if ((ptr = strtok(NULL, WS)) != NULL) {
409 arg1 = strtosecs(ptr);
410 if ((ptr = strtok(NULL, WS)) != NULL) {
411 arg2 = strtosecs(ptr);
412 arg3 = strtok(NULL, WS);
416 printf("%20s - ", cmd);
420 if (strcmp(cmd, "snapshots") == 0) {
423 check_softlinks(fd, new_config,
425 printf("only removing old snapshots\n");
427 cleanup_softlinks(fd, new_config,
431 printf("disabled\n");
432 snapshots_disabled = 1;
435 if (check_period(snapshots_path, cmd, arg1, &savet)) {
437 cleanup_softlinks(fd, new_config,
440 r = create_snapshot(path, snapshots_path);
444 } else if (arg1 == 0) {
446 * The commands following this check can't handle
447 * a period of 0, so call the feature disabled and
448 * ignore the directive.
450 printf("disabled\n");
451 } else if (strcmp(cmd, "prune") == 0) {
452 if (check_period(snapshots_path, cmd, arg1, &savet)) {
454 printf("run - WARNING snapshot "
456 "but snapshots disabled\n");
459 r = cleanup_prune(path, snapshots_path,
460 arg1, arg2, snapshots_disabled);
464 } else if (strcmp(cmd, "rebalance") == 0) {
466 if (check_period(snapshots_path, cmd, arg1, &savet)) {
471 r = cleanup_rebalance(path, snapshots_path,
476 } else if (strcmp(cmd, "reblock") == 0) {
477 if (check_period(snapshots_path, cmd, arg1, &savet)) {
482 r = cleanup_reblock(path, snapshots_path,
487 } else if (strcmp(cmd, "recopy") == 0) {
488 if (check_period(snapshots_path, cmd, arg1, &savet)) {
493 r = cleanup_recopy(path, snapshots_path,
498 } else if (strcmp(cmd, "dedup") == 0) {
499 if (check_period(snapshots_path, cmd, arg1, &savet)) {
504 r = cleanup_dedup(path, snapshots_path,
510 printf("unknown directive\n");
514 save_period(snapshots_path, cmd, savet);
518 * Add new rebalance feature if the config doesn't have it.
519 * (old style config only).
521 if (new_config == 0 && found_rebal == 0)
522 if ((fp = fopen(config_path, "r+")) != NULL) {
524 fprintf(fp, "rebalance 1d 5m\n");
529 * Cleanup, and delay a little
538 * Initialize new config data (new or old style)
541 config_init(const char *path, struct hammer_ioc_config *config)
543 const char *snapshots;
545 if (strcmp(path, "/tmp") == 0 ||
546 strcmp(path, "/var/tmp") == 0 ||
547 strcmp(path, "/usr/obj") == 0)
548 snapshots = "snapshots 0d 0d\n";
550 snapshots = "snapshots 1d 60d\n";
551 bzero(config->config.text, sizeof(config->config.text));
552 snprintf(config->config.text, sizeof(config->config.text) - 1, "%s%s",
562 * Migrate configuration data from the old snapshots/config
563 * file to the new meta-data format.
566 migrate_config(FILE *fp, struct hammer_ioc_config *config)
570 n = fread(config->config.text, 1, sizeof(config->config.text) - 1, fp);
572 bzero(config->config.text + n, sizeof(config->config.text) - n);
576 * Migrate snapshot softlinks in the snapshots directory to the
577 * new meta-data format. The softlinks are left intact, but
578 * this way the pruning code won't lose track of them if you
579 * happen to blow away the snapshots directory.
582 migrate_snapshots(int fd, const char *snapshots_path)
584 struct hammer_ioc_snapshot snapshot;
590 bzero(&snapshot, sizeof(snapshot));
592 if ((dir = opendir(snapshots_path)) != NULL) {
593 while ((den = readdir(dir)) != NULL) {
594 if (den->d_name[0] == '.')
596 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
597 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode))
598 migrate_one_snapshot(fd, fpath, &snapshot);
603 migrate_one_snapshot(fd, NULL, &snapshot);
608 * Migrate a single snapshot. If fpath is NULL the ioctl is flushed,
609 * otherwise it is flushed when it fills up.
612 migrate_one_snapshot(int fd, const char *fpath,
613 struct hammer_ioc_snapshot *snapshot)
616 hammer_snapshot_data_t snap;
630 tid = (hammer_tid_t)(int64_t)-1;
632 /* fpath may contain directory components */
633 if ((ptr = strrchr(fpath, '/')) != NULL)
637 while (*ptr && *ptr != '-' && *ptr != '.')
641 r = sscanf(ptr, "%4d%2d%2d-%2d%2d",
642 &year, &month, &day, &hour, &minute);
645 bzero(&tm, sizeof(tm));
650 tm.tm_mon = month - 1;
651 tm.tm_year = year - 1900;
654 bzero(linkbuf, sizeof(linkbuf));
655 if (readlink(fpath, linkbuf, sizeof(linkbuf) - 1) > 0 &&
656 (ptr = strrchr(linkbuf, '@')) != NULL &&
657 ptr > linkbuf && ptr[-1] == '@')
658 tid = strtoull(ptr + 1, NULL, 16);
659 if (t != (time_t)-1 && tid != (hammer_tid_t)(int64_t)-1) {
660 snap = &snapshot->snaps[snapshot->count];
661 bzero(snap, sizeof(*snap));
663 snap->ts = (uint64_t)t * 1000000ULL;
664 snprintf(snap->label, sizeof(snap->label),
668 printf(" non-canonical snapshot softlink: %s->%s\n",
673 if ((fpath == NULL && snapshot->count) ||
674 snapshot->count == HAMMER_SNAPS_PER_IOCTL) {
675 printf(" (%d snapshots)", snapshot->count);
677 if (ioctl(fd, HAMMERIOC_ADD_SNAPSHOT, snapshot) < 0) {
678 printf(" Ioctl to migrate snapshots failed: %s\n",
680 } else if (snapshot->head.error == EALREADY) {
683 } else if (snapshot->head.error) {
684 printf(" Ioctl to migrate snapshots failed: %s\n",
685 strerror(snapshot->head.error));
687 printf("index %d\n", snapshot->index);
690 snapshot->head.error = 0;
700 val = strtol(ptr, &ptr, 0);
714 errx(1, "illegal suffix converting %s", ptr);
721 dividing_slash(const char *path)
723 int len = strlen(path);
724 if (len && path[len-1] == '/')
731 * Check whether the desired period has elapsed since the last successful
732 * run. The run may take a while and cross a boundary so we remember the
733 * current time_t so we can save it later on.
735 * Periods in minutes, hours, or days are assumed to have been crossed
736 * if the local time crosses a minute, hour, or day boundary regardless
737 * of how close the last operation actually was.
739 * If ForceOpt is set always return true.
742 check_period(const char *snapshots_path, const char *cmd, int arg1,
753 localtime_r(savep, &tp1);
762 * Retrieve the start time of the last successful operation.
764 asprintf(&check_path, "%s/.%s.period", snapshots_path, cmd);
765 fp = fopen(check_path, "r");
769 if (fgets(buf, sizeof(buf), fp) == NULL) {
775 lastt = strtol(buf, NULL, 0);
776 localtime_r(&lastt, &tp2);
779 * Normalize the times. e.g. if asked to do something on a 1-day
780 * interval the operation will be performed as soon as the day
781 * turns over relative to the previous operation, even if the previous
782 * operation ran a few seconds ago just before midnight.
784 if (arg1 % 60 == 0) {
788 if (arg1 % (60 * 60) == 0) {
792 if (arg1 % (24 * 60 * 60) == 0) {
797 baset = mktime(&tp1);
798 lastt = mktime(&tp2);
801 printf("%lld vs %lld\n", (long long)(baset - lastt), (long long)arg1);
804 if ((int)(baset - lastt) >= arg1)
810 * Store the start time of the last successful operation.
813 save_period(const char *snapshots_path, const char *cmd,
820 asprintf(&ocheck_path, "%s/.%s.period", snapshots_path, cmd);
821 asprintf(&ncheck_path, "%s/.%s.period.new", snapshots_path, cmd);
822 fp = fopen(ncheck_path, "w");
824 fprintf(fp, "0x%08llx\n", (long long)savet);
826 rename(ncheck_path, ocheck_path);
829 fprintf(stderr, "hammer: Unable to create period-file %s: %s\n",
830 ncheck_path, strerror(errno));
835 * Simply count the number of softlinks in the snapshots dir
838 check_softlinks(int fd, int new_config, const char *snapshots_path)
847 * Old-style softlink-based snapshots
849 if ((dir = opendir(snapshots_path)) != NULL) {
850 while ((den = readdir(dir)) != NULL) {
851 if (den->d_name[0] == '.')
853 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
854 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode))
862 * New-style snapshots are stored as filesystem meta-data,
866 struct hammer_ioc_snapshot snapshot;
868 bzero(&snapshot, sizeof(snapshot));
870 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0)
871 err(2, "hammer cleanup: check_softlink "
873 res += snapshot.count;
874 } while (snapshot.head.error == 0 && snapshot.count);
880 * Clean up expired softlinks in the snapshots dir
883 cleanup_softlinks(int fd, int new_config,
884 const char *snapshots_path, int arg2, char *arg3)
892 if (arg3 != NULL && strstr(arg3, "any") != NULL)
895 if ((dir = opendir(snapshots_path)) != NULL) {
896 while ((den = readdir(dir)) != NULL) {
897 if (den->d_name[0] == '.')
899 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
900 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode) &&
901 (anylink || strncmp(den->d_name, "snap-", 5) == 0)) {
902 if (check_expired(den->d_name, arg2)) {
904 printf(" expire %s\n",
915 * New-style snapshots are stored as filesystem meta-data,
919 struct hammer_ioc_snapshot snapshot;
920 struct hammer_ioc_snapshot dsnapshot;
921 hammer_snapshot_data_t snap;
928 bzero(&snapshot, sizeof(snapshot));
929 bzero(&dsnapshot, sizeof(dsnapshot));
931 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0)
932 err(2, "hammer cleanup: check_softlink "
934 for (i = 0; i < snapshot.count; ++i) {
935 snap = &snapshot.snaps[i];
936 t = snap->ts / 1000000ULL;
938 if ((int)dt > arg2 || snap->tid == 0)
939 dsnapshot.snaps[dsnapshot.count++] =
941 if ((int)dt > arg2 && VerboseOpt) {
943 strftime(snapts, sizeof(snapts),
944 "%Y-%m-%d %H:%M:%S %Z", tp);
945 printf(" expire 0x%016jx %s %s\n",
946 (uintmax_t)snap->tid,
950 if (dsnapshot.count == HAMMER_SNAPS_PER_IOCTL)
951 delete_snapshots(fd, &dsnapshot);
953 } while (snapshot.head.error == 0 && snapshot.count);
956 delete_snapshots(fd, &dsnapshot);
961 delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot)
964 if (ioctl(fd, HAMMERIOC_DEL_SNAPSHOT, dsnapshot) < 0) {
965 printf(" Ioctl to delete snapshots failed: %s\n",
969 if (dsnapshot->head.error) {
970 printf(" Ioctl to delete snapshots failed at "
972 dsnapshot->snaps[dsnapshot->index].tid,
973 strerror(dsnapshot->head.error));
974 if (++dsnapshot->index < dsnapshot->count)
979 dsnapshot->index = 0;
980 dsnapshot->count = 0;
981 dsnapshot->head.error = 0;
985 * Take a softlink path in the form snap-yyyymmdd-hhmm and the
986 * expiration in seconds (arg2) and return non-zero if the softlink
990 check_expired(const char *fpath, int arg2)
1001 while (*fpath && *fpath != '-' && *fpath != '.')
1006 r = sscanf(fpath, "%4d%2d%2d-%2d%2d",
1007 &year, &month, &day, &hour, &minute);
1010 bzero(&tm, sizeof(tm));
1015 tm.tm_mon = month - 1;
1016 tm.tm_year = year - 1900;
1018 if (t == (time_t)-1)
1031 create_snapshot(const char *path, const char *snapshots_path)
1035 runcmd(&r, "hammer snapshot %s %s", path, snapshots_path);
1040 cleanup_prune(const char *path, const char *snapshots_path,
1041 int arg1 __unused, int arg2, int snapshots_disabled)
1043 const char *path_or_snapshots_path;
1046 * If the snapshots_path (e.g. /var/hammer/...) has no snapshots
1047 * in it then prune will get confused and prune the filesystem
1048 * containing the snapshots_path instead of the requested
1049 * filesystem. De-confuse prune. We need a better way.
1051 if (hammer_softprune_testdir(snapshots_path))
1052 path_or_snapshots_path = snapshots_path;
1054 path_or_snapshots_path = path;
1057 * If snapshots have been disabled run prune-everything instead
1060 if (snapshots_disabled && arg2)
1062 "hammer -c %s/.prune.cycle -t %d prune-everything %s",
1063 snapshots_path, arg2, path);
1064 else if (snapshots_disabled)
1065 runcmd(NULL, "hammer prune-everything %s", path);
1067 runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune %s",
1068 snapshots_path, arg2, path_or_snapshots_path);
1070 runcmd(NULL, "hammer prune %s", path_or_snapshots_path);
1075 cleanup_rebalance(const char *path, const char *snapshots_path,
1076 int arg1 __unused, int arg2)
1078 if (VerboseOpt == 0) {
1084 "hammer -c %s/.rebalance.cycle -t %d rebalance %s",
1085 snapshots_path, arg2, path);
1086 if (VerboseOpt == 0) {
1090 if (VerboseOpt == 0)
1096 cleanup_reblock(const char *path, const char *snapshots_path,
1097 int arg1 __unused, int arg2)
1099 if (VerboseOpt == 0) {
1105 * When reblocking the B-Tree always reblock everything in normal
1109 "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s",
1110 snapshots_path, arg2, path);
1111 if (VerboseOpt == 0) {
1117 * When reblocking the inodes always reblock everything in normal
1121 "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s",
1122 snapshots_path, arg2, path);
1123 if (VerboseOpt == 0) {
1129 * When reblocking the directories always reblock everything in normal
1133 "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s",
1134 snapshots_path, arg2, path);
1135 if (VerboseOpt == 0) {
1141 * Do not reblock all the data in normal mode.
1144 "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95",
1145 snapshots_path, arg2, path);
1146 if (VerboseOpt == 0)
1152 cleanup_recopy(const char *path, const char *snapshots_path,
1153 int arg1 __unused, int arg2)
1155 if (VerboseOpt == 0) {
1160 "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s",
1161 snapshots_path, arg2, path);
1162 if (VerboseOpt == 0) {
1167 "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s",
1168 snapshots_path, arg2, path);
1169 if (VerboseOpt == 0) {
1174 "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s",
1175 snapshots_path, arg2, path);
1176 if (VerboseOpt == 0) {
1181 "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s",
1182 snapshots_path, arg2, path);
1183 if (VerboseOpt == 0)
1189 cleanup_dedup(const char *path, const char *snapshots_path __unused,
1190 int arg1 __unused, int arg2)
1192 if (VerboseOpt == 0) {
1197 runcmd(NULL, "hammer -t %d dedup %s", arg2, path);
1198 if (VerboseOpt == 0) {
1202 if (VerboseOpt == 0)
1209 runcmd(int *resp, const char *ctl, ...)
1221 * Generate the command
1224 vasprintf(&cmd, ctl, va);
1227 printf(" %s\n", cmd);
1230 * Break us down into arguments. We do not just use system() here
1231 * because it blocks SIGINT and friends.
1235 av = malloc(sizeof(char *) * nmax);
1237 for (arg = strtok(cmd, WS); arg; arg = strtok(NULL, WS)) {
1238 if (n == nmax - 1) {
1240 av = realloc(av, sizeof(char *) * nmax);
1250 if ((pid = fork()) == 0) {
1251 if (VerboseOpt < 2) {
1252 int fd = open("/dev/null", O_RDWR);
1258 } else if (pid < 0) {
1263 while (waitpid(pid, &status, 0) != pid)
1265 res = WEXITSTATUS(status);