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;
147 do_cleanup(const char *path)
149 struct hammer_ioc_pseudofs_rw pfs;
150 struct hammer_ioc_config config;
151 struct hammer_ioc_version version;
152 union hammer_ioc_mrecord_any mrec_tmp;
153 char *snapshots_path = NULL;
166 struct didpfs *didpfs;
167 int snapshots_disabled = 0;
168 int prune_warning = 0;
170 int snapshots_from_pfs = 0;
175 bzero(&mrec_tmp, sizeof(mrec_tmp));
176 clrpfs(&pfs, &mrec_tmp.pfs.pfsd, -1);
178 printf("cleanup %-20s -", path);
179 fd = open(path, O_RDONLY);
181 printf(" unable to access directory: %s\n", strerror(errno));
184 if (ioctl(fd, HAMMERIOC_GET_PSEUDOFS, &pfs) < 0) {
185 printf(" not a HAMMER filesystem: %s\n", strerror(errno));
189 if (pfs.version != HAMMER_IOC_PSEUDOFS_VERSION) {
190 printf(" unrecognized HAMMER version\n");
194 bzero(&version, sizeof(version));
195 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
196 printf(" HAMMER filesystem but couldn't retrieve version!\n");
200 HammerVersion = version.cur_version;
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 (hammer_is_pfs_slave(&mrec_tmp.pfs.pfsd)) {
240 if (version.cur_version < 3) {
241 printf(" WARNING: must configure snapshot dir for PFS slave\n");
242 printf("\tWe suggest <fs>/var/slaves/<name> where "
243 "<fs> is the base HAMMER fs\n");
244 printf("\tcontaining the slave\n");
249 asprintf(&snapshots_path,
250 "%s%ssnapshots", path, dividing_slash(path));
254 * Check for old-style config file
256 if (snapshots_path) {
257 asprintf(&config_path, "%s/config", snapshots_path);
258 fp = fopen(config_path, "r");
262 * Handle upgrades to hammer version 3, move the config
263 * file into meta-data.
265 * For the old config read the file into the config structure,
266 * we will parse it out of the config structure regardless.
268 if (version.cur_version >= 3) {
270 printf("(migrating) ");
272 migrate_config(fp, &config);
273 migrate_snapshots(fd, snapshots_path);
275 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
276 printf(" cannot init meta-data config!\n");
281 } else if (new_config == 0) {
282 config_init(path, &config);
283 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
284 printf(" cannot init meta-data config!\n");
292 * Create missing snapshots directory for HAMMER VERSION < 3
294 if (stat(snapshots_path, &st) < 0) {
295 if (mkdir(snapshots_path, 0755) != 0) {
296 free(snapshots_path);
297 printf(" unable to create snapshot dir \"%s\": %s\n",
298 snapshots_path, strerror(errno));
305 * Create missing config file for HAMMER VERSION < 3
308 config_init(path, &config);
309 fp = fopen(config_path, "w");
311 fwrite(config.config.text, 1,
312 strlen(config.config.text), fp);
316 migrate_config(fp, &config);
322 * If snapshots_from_pfs is not set we calculate the new snapshots
323 * directory default (in /var) for HAMMER VERSION >= 3 and migrate
324 * the old snapshots directory over.
326 * People who have set an explicit snapshots directory will have
327 * to migrate the data manually into /var/hammer, or not bother at
328 * all. People running slaves may wish to migrate it and then
329 * clear the snapshots specification in the PFS config for the
332 if (new_config && snapshots_from_pfs == 0) {
335 if (path[0] != '/') {
336 printf(" path must start with '/'\n");
339 if (strcmp(path, "/") == 0)
340 asprintf(&npath, "%s/root", SNAPSHOTS_BASE);
342 asprintf(&npath, "%s/%s", SNAPSHOTS_BASE, path + 1);
343 if (snapshots_path) {
344 if (stat(npath, &st) < 0 && errno == ENOENT) {
345 if (stat(snapshots_path, &st) < 0 && errno == ENOENT) {
346 printf(" HAMMER UPGRADE: Creating snapshots\n"
347 "\tCreating snapshots in %s\n",
349 runcmd(&r, "mkdir -p %s", npath);
351 printf(" HAMMER UPGRADE: Moving snapshots\n"
352 "\tMoving snapshots from %s to %s\n",
353 snapshots_path, npath);
354 runcmd(&r, "mkdir -p %s", npath);
355 runcmd(&r, "cpdup %s %s", snapshots_path, npath);
357 printf("Unable to move snapshots directory!\n");
358 printf("Please fix this critical error.\n");
359 printf("Aborting cleanup of %s\n", path);
363 runcmd(&r, "rm -rf %s", snapshots_path);
366 free(snapshots_path);
367 } else if (stat(npath, &st) < 0 && errno == ENOENT) {
368 runcmd(&r, "mkdir -p %s", npath);
370 snapshots_path = npath;
374 * Lock the PFS. fd is the base directory of the mounted PFS.
376 if (flock(fd, LOCK_EX|LOCK_NB) == -1) {
377 if (errno == EWOULDBLOCK)
378 printf(" PFS#%d locked by other process\n", pfs.pfs_id);
380 printf(" can not lock %s: %s\n", config_path, strerror(errno));
385 printf(" handle PFS#%d using %s\n", pfs.pfs_id, snapshots_path);
387 struct pidfh *pfh = NULL;
388 static char pidfile[PIDFILE_BUFSIZE];
390 snprintf (pidfile, PIDFILE_BUFSIZE, "%s/hammer.cleanup.%d",
391 pidfile_loc, getpid());
392 pfh = pidfile_open(pidfile, 0644, NULL);
394 warn ("Unable to open or create %s", pidfile);
399 * Process the config file
401 cbase = config.config.text;
403 while ((cptr = strchr(cbase, '\n')) != NULL) {
404 bcopy(cbase, buf, cptr - cbase);
405 buf[cptr - cbase] = 0;
408 cmd = strtok(buf, WS);
409 if (cmd == NULL || cmd[0] == '#')
415 if ((ptr = strtok(NULL, WS)) != NULL) {
416 arg1 = strtosecs(ptr);
417 if ((ptr = strtok(NULL, WS)) != NULL) {
418 arg2 = strtosecs(ptr);
419 arg3 = strtok(NULL, WS);
423 printf("%20s - ", cmd);
427 if (strcmp(cmd, "snapshots") == 0) {
430 check_softlinks(fd, new_config,
432 printf("only removing old snapshots\n");
434 cleanup_softlinks(fd, new_config,
438 printf("disabled\n");
439 snapshots_disabled = 1;
442 if (check_period(snapshots_path, cmd, arg1, &savet)) {
444 cleanup_softlinks(fd, new_config,
447 r = create_snapshot(path, snapshots_path);
451 } else if (arg1 == 0) {
453 * The commands following this check can't handle
454 * a period of 0, so call the feature disabled and
455 * ignore the directive.
457 printf("disabled\n");
458 } else if (strcmp(cmd, "prune") == 0) {
459 if (check_period(snapshots_path, cmd, arg1, &savet)) {
461 printf("run - WARNING snapshot "
463 "but snapshots disabled\n");
467 r = cleanup_prune(path, snapshots_path,
468 arg1, arg2, snapshots_disabled);
472 } else if (strcmp(cmd, "rebalance") == 0) {
474 if (check_period(snapshots_path, cmd, arg1, &savet)) {
479 r = cleanup_rebalance(path, snapshots_path,
484 } else if (strcmp(cmd, "reblock") == 0) {
485 if (check_period(snapshots_path, cmd, arg1, &savet)) {
490 r = cleanup_reblock(path, snapshots_path,
495 } else if (strcmp(cmd, "recopy") == 0) {
496 if (check_period(snapshots_path, cmd, arg1, &savet)) {
501 r = cleanup_recopy(path, snapshots_path,
506 } else if (strcmp(cmd, "dedup") == 0) {
507 if (check_period(snapshots_path, cmd, arg1, &savet)) {
512 r = cleanup_dedup(path, snapshots_path,
518 printf("unknown directive\n");
522 save_period(snapshots_path, cmd, savet);
526 * Add new rebalance feature if the config doesn't have it.
527 * (old style config only).
529 if (new_config == 0 && found_rebal == 0) {
530 if ((fp = fopen(config_path, "r+")) != NULL) {
532 fprintf(fp, "rebalance 1d 5m\n");
538 * Cleanup, and delay a little
547 * Initialize new config data (new or old style)
550 config_init(const char *path, struct hammer_ioc_config *config)
552 const char *snapshots;
554 if (strcmp(path, "/tmp") == 0 ||
555 strcmp(path, "/var/tmp") == 0 ||
556 strcmp(path, "/usr/obj") == 0) {
557 snapshots = "snapshots 0d 0d\n";
559 snapshots = "snapshots 1d 60d\n";
561 bzero(config->config.text, sizeof(config->config.text));
562 snprintf(config->config.text, sizeof(config->config.text) - 1, "%s%s",
572 * Migrate configuration data from the old snapshots/config
573 * file to the new meta-data format.
576 migrate_config(FILE *fp, struct hammer_ioc_config *config)
580 n = fread(config->config.text, 1, sizeof(config->config.text) - 1, fp);
582 bzero(config->config.text + n, sizeof(config->config.text) - n);
586 * Migrate snapshot softlinks in the snapshots directory to the
587 * new meta-data format. The softlinks are left intact, but
588 * this way the pruning code won't lose track of them if you
589 * happen to blow away the snapshots directory.
592 migrate_snapshots(int fd, const char *snapshots_path)
594 struct hammer_ioc_snapshot snapshot;
600 bzero(&snapshot, sizeof(snapshot));
602 if ((dir = opendir(snapshots_path)) != NULL) {
603 while ((den = readdir(dir)) != NULL) {
604 if (den->d_name[0] == '.')
606 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
607 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode)) {
608 migrate_one_snapshot(fd, fpath, &snapshot);
614 migrate_one_snapshot(fd, NULL, &snapshot);
619 * Migrate a single snapshot. If fpath is NULL the ioctl is flushed,
620 * otherwise it is flushed when it fills up.
623 migrate_one_snapshot(int fd, const char *fpath,
624 struct hammer_ioc_snapshot *snapshot)
627 hammer_snapshot_data_t snap;
641 tid = (hammer_tid_t)(int64_t)-1;
643 /* fpath may contain directory components */
644 if ((ptr = strrchr(fpath, '/')) != NULL)
648 while (*ptr && *ptr != '-' && *ptr != '.')
652 r = sscanf(ptr, "%4d%2d%2d-%2d%2d",
653 &year, &month, &day, &hour, &minute);
656 bzero(&tm, sizeof(tm));
661 tm.tm_mon = month - 1;
662 tm.tm_year = year - 1900;
665 bzero(linkbuf, sizeof(linkbuf));
666 if (readlink(fpath, linkbuf, sizeof(linkbuf) - 1) > 0 &&
667 (ptr = strrchr(linkbuf, '@')) != NULL &&
668 ptr > linkbuf && ptr[-1] == '@') {
669 tid = strtoull(ptr + 1, NULL, 16);
671 if (t != (time_t)-1 && tid != (hammer_tid_t)(int64_t)-1) {
672 snap = &snapshot->snaps[snapshot->count];
673 bzero(snap, sizeof(*snap));
675 snap->ts = (uint64_t)t * 1000000ULL;
676 snprintf(snap->label, sizeof(snap->label),
680 printf(" non-canonical snapshot softlink: %s->%s\n",
685 if ((fpath == NULL && snapshot->count) ||
686 snapshot->count == HAMMER_SNAPS_PER_IOCTL) {
687 printf(" (%d snapshots)", snapshot->count);
689 if (ioctl(fd, HAMMERIOC_ADD_SNAPSHOT, snapshot) < 0) {
690 printf(" Ioctl to migrate snapshots failed: %s\n",
692 } else if (snapshot->head.error == EALREADY) {
695 } else if (snapshot->head.error) {
696 printf(" Ioctl to migrate snapshots failed: %s\n",
697 strerror(snapshot->head.error));
699 printf("index %d\n", snapshot->index);
702 snapshot->head.error = 0;
712 val = strtol(ptr, &ptr, 0);
726 errx(1, "illegal suffix converting %s", ptr);
733 dividing_slash(const char *path)
735 int len = strlen(path);
736 if (len && path[len-1] == '/')
743 * Check whether the desired period has elapsed since the last successful
744 * run. The run may take a while and cross a boundary so we remember the
745 * current time_t so we can save it later on.
747 * Periods in minutes, hours, or days are assumed to have been crossed
748 * if the local time crosses a minute, hour, or day boundary regardless
749 * of how close the last operation actually was.
751 * If ForceOpt is set always return true.
754 check_period(const char *snapshots_path, const char *cmd, int arg1,
765 localtime_r(savep, &tp1);
774 * Retrieve the start time of the last successful operation.
776 asprintf(&check_path, "%s/.%s.period", snapshots_path, cmd);
777 fp = fopen(check_path, "r");
781 if (fgets(buf, sizeof(buf), fp) == NULL) {
787 lastt = strtol(buf, NULL, 0);
788 localtime_r(&lastt, &tp2);
791 * Normalize the times. e.g. if asked to do something on a 1-day
792 * interval the operation will be performed as soon as the day
793 * turns over relative to the previous operation, even if the previous
794 * operation ran a few seconds ago just before midnight.
796 if (arg1 % 60 == 0) {
800 if (arg1 % (60 * 60) == 0) {
804 if (arg1 % (24 * 60 * 60) == 0) {
809 baset = mktime(&tp1);
810 lastt = mktime(&tp2);
813 printf("%lld vs %lld\n", (long long)(baset - lastt), (long long)arg1);
816 if ((int)(baset - lastt) >= arg1)
822 * Store the start time of the last successful operation.
825 save_period(const char *snapshots_path, const char *cmd,
832 asprintf(&ocheck_path, "%s/.%s.period", snapshots_path, cmd);
833 asprintf(&ncheck_path, "%s/.%s.period.new", snapshots_path, cmd);
834 fp = fopen(ncheck_path, "w");
836 fprintf(fp, "0x%08llx\n", (long long)savet);
838 rename(ncheck_path, ocheck_path);
841 fprintf(stderr, "hammer: Unable to create period-file %s: %s\n",
842 ncheck_path, strerror(errno));
847 * Simply count the number of softlinks in the snapshots dir
850 check_softlinks(int fd, int new_config, const char *snapshots_path)
859 * Old-style softlink-based snapshots
861 if ((dir = opendir(snapshots_path)) != NULL) {
862 while ((den = readdir(dir)) != NULL) {
863 if (den->d_name[0] == '.')
865 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
866 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode))
874 * New-style snapshots are stored as filesystem meta-data,
878 struct hammer_ioc_snapshot snapshot;
880 bzero(&snapshot, sizeof(snapshot));
882 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
883 err(2, "hammer cleanup: check_softlink "
887 res += snapshot.count;
888 } while (snapshot.head.error == 0 && snapshot.count);
894 * Clean up expired softlinks in the snapshots dir
897 cleanup_softlinks(int fd, int new_config,
898 const char *snapshots_path, int arg2, char *arg3)
906 if (arg3 != NULL && strstr(arg3, "any") != NULL)
909 if ((dir = opendir(snapshots_path)) != NULL) {
910 while ((den = readdir(dir)) != NULL) {
911 if (den->d_name[0] == '.')
913 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
914 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode) &&
915 (anylink || strncmp(den->d_name, "snap-", 5) == 0)) {
916 if (check_expired(den->d_name, arg2)) {
918 printf(" expire %s\n",
930 * New-style snapshots are stored as filesystem meta-data,
934 struct hammer_ioc_snapshot snapshot;
935 struct hammer_ioc_snapshot dsnapshot;
936 hammer_snapshot_data_t snap;
943 bzero(&snapshot, sizeof(snapshot));
944 bzero(&dsnapshot, sizeof(dsnapshot));
946 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
947 err(2, "hammer cleanup: check_softlink "
951 for (i = 0; i < snapshot.count; ++i) {
952 snap = &snapshot.snaps[i];
953 t = snap->ts / 1000000ULL;
955 if ((int)dt > arg2 || snap->tid == 0) {
956 dsnapshot.snaps[dsnapshot.count++] =
959 if ((int)dt > arg2 && VerboseOpt) {
961 strftime(snapts, sizeof(snapts),
962 "%Y-%m-%d %H:%M:%S %Z", tp);
963 printf(" expire 0x%016jx %s %s\n",
964 (uintmax_t)snap->tid,
968 if (dsnapshot.count == HAMMER_SNAPS_PER_IOCTL)
969 delete_snapshots(fd, &dsnapshot);
971 } while (snapshot.head.error == 0 && snapshot.count);
974 delete_snapshots(fd, &dsnapshot);
979 delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot)
982 if (ioctl(fd, HAMMERIOC_DEL_SNAPSHOT, dsnapshot) < 0) {
983 printf(" Ioctl to delete snapshots failed: %s\n",
987 if (dsnapshot->head.error) {
988 printf(" Ioctl to delete snapshots failed at "
990 dsnapshot->snaps[dsnapshot->index].tid,
991 strerror(dsnapshot->head.error));
992 if (++dsnapshot->index < dsnapshot->count)
997 dsnapshot->index = 0;
998 dsnapshot->count = 0;
999 dsnapshot->head.error = 0;
1003 * Take a softlink path in the form snap-yyyymmdd-hhmm and the
1004 * expiration in seconds (arg2) and return non-zero if the softlink
1008 check_expired(const char *fpath, int arg2)
1019 while (*fpath && *fpath != '-' && *fpath != '.')
1024 r = sscanf(fpath, "%4d%2d%2d-%2d%2d",
1025 &year, &month, &day, &hour, &minute);
1028 bzero(&tm, sizeof(tm));
1033 tm.tm_mon = month - 1;
1034 tm.tm_year = year - 1900;
1036 if (t == (time_t)-1)
1049 create_snapshot(const char *path, const char *snapshots_path)
1053 runcmd(&r, "hammer snapshot %s %s", path, snapshots_path);
1058 cleanup_prune(const char *path, const char *snapshots_path,
1059 int arg1 __unused, int arg2, int snapshots_disabled)
1061 const char *path_or_snapshots_path;
1064 * If the snapshots_path (e.g. /var/hammer/...) has no snapshots
1065 * in it then prune will get confused and prune the filesystem
1066 * containing the snapshots_path instead of the requested
1067 * filesystem. De-confuse prune. We need a better way.
1069 if (hammer_softprune_testdir(snapshots_path))
1070 path_or_snapshots_path = snapshots_path;
1072 path_or_snapshots_path = path;
1075 * If snapshots have been disabled run prune-everything instead
1078 if (snapshots_disabled && arg2) {
1080 "hammer -c %s/.prune.cycle -t %d prune-everything %s",
1081 snapshots_path, arg2, path);
1082 } else if (snapshots_disabled) {
1083 runcmd(NULL, "hammer prune-everything %s", path);
1085 runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune %s",
1086 snapshots_path, arg2, path_or_snapshots_path);
1088 runcmd(NULL, "hammer prune %s", path_or_snapshots_path);
1094 cleanup_rebalance(const char *path, const char *snapshots_path,
1095 int arg1 __unused, int arg2)
1097 if (VerboseOpt == 0) {
1103 "hammer -c %s/.rebalance.cycle -t %d rebalance %s",
1104 snapshots_path, arg2, path);
1105 if (VerboseOpt == 0) {
1109 if (VerboseOpt == 0)
1115 cleanup_reblock(const char *path, const char *snapshots_path,
1116 int arg1 __unused, int arg2)
1118 if (VerboseOpt == 0) {
1124 * When reblocking the B-Tree always reblock everything in normal
1128 "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s",
1129 snapshots_path, arg2, path);
1130 if (VerboseOpt == 0) {
1136 * When reblocking the inodes always reblock everything in normal
1140 "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s",
1141 snapshots_path, arg2, path);
1142 if (VerboseOpt == 0) {
1148 * When reblocking the directories always reblock everything in normal
1152 "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s",
1153 snapshots_path, arg2, path);
1154 if (VerboseOpt == 0) {
1160 * Do not reblock all the data in normal mode.
1163 "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95",
1164 snapshots_path, arg2, path);
1165 if (VerboseOpt == 0)
1171 cleanup_recopy(const char *path, const char *snapshots_path,
1172 int arg1 __unused, int arg2)
1174 if (VerboseOpt == 0) {
1179 "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s",
1180 snapshots_path, arg2, path);
1181 if (VerboseOpt == 0) {
1186 "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s",
1187 snapshots_path, arg2, path);
1188 if (VerboseOpt == 0) {
1193 "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s",
1194 snapshots_path, arg2, path);
1195 if (VerboseOpt == 0) {
1200 "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s",
1201 snapshots_path, arg2, path);
1202 if (VerboseOpt == 0)
1208 cleanup_dedup(const char *path, const char *snapshots_path __unused,
1209 int arg1 __unused, int arg2)
1211 if (VerboseOpt == 0) {
1216 runcmd(NULL, "hammer -t %d dedup %s", arg2, path);
1217 if (VerboseOpt == 0) {
1221 if (VerboseOpt == 0)
1228 runcmd(int *resp, const char *ctl, ...)
1240 * Generate the command
1243 vasprintf(&cmd, ctl, va);
1246 printf(" %s\n", cmd);
1249 * Break us down into arguments. We do not just use system() here
1250 * because it blocks SIGINT and friends.
1254 av = malloc(sizeof(char *) * nmax);
1256 for (arg = strtok(cmd, WS); arg; arg = strtok(NULL, WS)) {
1257 if (n == nmax - 1) {
1259 av = realloc(av, sizeof(char *) * nmax);
1269 if ((pid = fork()) == 0) {
1270 if (VerboseOpt < 2) {
1271 int fd = open("/dev/null", O_RDWR);
1277 } else if (pid < 0) {
1282 while (waitpid(pid, &status, 0) != pid)
1284 res = WEXITSTATUS(status);