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;
146 do_cleanup(const char *path)
148 struct hammer_ioc_pseudofs_rw pfs;
149 struct hammer_ioc_config config;
150 struct hammer_ioc_version version;
151 union hammer_ioc_mrecord_any mrec_tmp;
152 char *snapshots_path = NULL;
165 struct didpfs *didpfs;
166 int snapshots_disabled = 0;
167 int prune_warning = 0;
169 int snapshots_from_pfs = 0;
174 bzero(&mrec_tmp, sizeof(mrec_tmp));
175 clrpfs(&pfs, &mrec_tmp.pfs.pfsd, -1);
177 printf("cleanup %-20s -", path);
178 fd = open(path, O_RDONLY);
180 printf(" unable to access directory: %s\n", strerror(errno));
183 if (ioctl(fd, HAMMERIOC_GET_PSEUDOFS, &pfs) < 0) {
184 printf(" not a HAMMER filesystem: %s\n", strerror(errno));
188 if (pfs.version != HAMMER_IOC_PSEUDOFS_VERSION) {
189 printf(" unrecognized HAMMER version\n");
193 bzero(&version, sizeof(version));
194 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
195 printf(" HAMMER filesystem but couldn't retrieve version!\n");
199 HammerVersion = version.cur_version;
201 bzero(&config, sizeof(config));
202 if (version.cur_version >= 3) {
203 if (ioctl(fd, HAMMERIOC_GET_CONFIG, &config) == 0 &&
204 config.head.error == 0) {
210 * Make sure we have not already handled this PFS. Several nullfs
211 * mounts might alias the same PFS.
213 for (didpfs = FirstPFS; didpfs; didpfs = didpfs->next) {
214 if (bcmp(&didpfs->uuid, &mrec_tmp.pfs.pfsd.unique_uuid, sizeof(uuid_t)) == 0) {
215 printf(" PFS#%d already handled\n", pfs.pfs_id);
220 didpfs = malloc(sizeof(*didpfs));
221 didpfs->next = FirstPFS;
223 didpfs->uuid = mrec_tmp.pfs.pfsd.unique_uuid;
226 * Calculate the old snapshots directory for HAMMER VERSION < 3
228 * If the directory is explicitly specified in the PFS config
229 * we flag it and will not migrate it later.
231 if (mrec_tmp.pfs.pfsd.snapshots[0] == '/') {
232 asprintf(&snapshots_path, "%s", mrec_tmp.pfs.pfsd.snapshots);
233 snapshots_from_pfs = 1;
234 } else if (mrec_tmp.pfs.pfsd.snapshots[0]) {
235 printf(" WARNING: pfs-slave's snapshots dir is not absolute\n");
238 } else if (hammer_is_pfs_slave(&mrec_tmp.pfs.pfsd)) {
239 if (version.cur_version < 3) {
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");
248 asprintf(&snapshots_path,
249 "%s%ssnapshots", path, dividing_slash(path));
253 * Check for old-style config file
255 if (snapshots_path) {
256 asprintf(&config_path, "%s/config", snapshots_path);
257 fp = fopen(config_path, "r");
261 * Handle upgrades to hammer version 3, move the config
262 * file into meta-data.
264 * For the old config read the file into the config structure,
265 * we will parse it out of the config structure regardless.
267 if (version.cur_version >= 3) {
269 printf("(migrating) ");
271 migrate_config(fp, &config);
272 migrate_snapshots(fd, snapshots_path);
274 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
275 printf(" cannot init meta-data config!\n");
280 } else if (new_config == 0) {
281 config_init(path, &config);
282 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
283 printf(" cannot init meta-data config!\n");
291 * Create missing snapshots directory for HAMMER VERSION < 3
293 if (stat(snapshots_path, &st) < 0) {
294 if (mkdir(snapshots_path, 0755) != 0) {
295 free(snapshots_path);
296 printf(" unable to create snapshot dir \"%s\": %s\n",
297 snapshots_path, strerror(errno));
304 * Create missing config file for HAMMER VERSION < 3
307 config_init(path, &config);
308 fp = fopen(config_path, "w");
310 fwrite(config.config.text, 1,
311 strlen(config.config.text), fp);
315 migrate_config(fp, &config);
321 * If snapshots_from_pfs is not set we calculate the new snapshots
322 * directory default (in /var) for HAMMER VERSION >= 3 and migrate
323 * the old snapshots directory over.
325 * People who have set an explicit snapshots directory will have
326 * to migrate the data manually into /var/hammer, or not bother at
327 * all. People running slaves may wish to migrate it and then
328 * clear the snapshots specification in the PFS config for the
331 if (new_config && snapshots_from_pfs == 0) {
334 if (path[0] != '/') {
335 printf(" path must start with '/'\n");
338 if (strcmp(path, "/") == 0)
339 asprintf(&npath, "%s/root", SNAPSHOTS_BASE);
341 asprintf(&npath, "%s/%s", SNAPSHOTS_BASE, path + 1);
342 if (snapshots_path) {
343 if (stat(npath, &st) < 0 && errno == ENOENT) {
344 if (stat(snapshots_path, &st) < 0 && errno == ENOENT) {
345 printf(" HAMMER UPGRADE: Creating snapshots\n"
346 "\tCreating snapshots in %s\n",
348 runcmd(&r, "mkdir -p %s", npath);
350 printf(" HAMMER UPGRADE: Moving snapshots\n"
351 "\tMoving snapshots from %s to %s\n",
352 snapshots_path, npath);
353 runcmd(&r, "mkdir -p %s", npath);
354 runcmd(&r, "cpdup %s %s", snapshots_path, npath);
356 printf("Unable to move snapshots directory!\n");
357 printf("Please fix this critical error.\n");
358 printf("Aborting cleanup of %s\n", path);
362 runcmd(&r, "rm -rf %s", snapshots_path);
365 free(snapshots_path);
366 } else if (stat(npath, &st) < 0 && errno == ENOENT) {
367 runcmd(&r, "mkdir -p %s", npath);
369 snapshots_path = npath;
373 * Lock the PFS. fd is the base directory of the mounted PFS.
375 if (flock(fd, LOCK_EX|LOCK_NB) == -1) {
376 if (errno == EWOULDBLOCK)
377 printf(" PFS#%d locked by other process\n", pfs.pfs_id);
379 printf(" can not lock %s: %s\n", config_path, strerror(errno));
384 printf(" handle PFS#%d using %s\n", pfs.pfs_id, snapshots_path);
386 struct pidfh *pfh = NULL;
387 static char pidfile[PIDFILE_BUFSIZE];
389 snprintf (pidfile, PIDFILE_BUFSIZE, "%s/hammer.cleanup.%d",
390 pidfile_loc, getpid());
391 pfh = pidfile_open(pidfile, 0644, NULL);
393 warn ("Unable to open or create %s", pidfile);
397 * Process the config file
399 cbase = config.config.text;
401 while ((cptr = strchr(cbase, '\n')) != NULL) {
402 bcopy(cbase, buf, cptr - cbase);
403 buf[cptr - cbase] = 0;
406 cmd = strtok(buf, WS);
407 if (cmd == NULL || cmd[0] == '#')
413 if ((ptr = strtok(NULL, WS)) != NULL) {
414 arg1 = strtosecs(ptr);
415 if ((ptr = strtok(NULL, WS)) != NULL) {
416 arg2 = strtosecs(ptr);
417 arg3 = strtok(NULL, WS);
421 printf("%20s - ", cmd);
425 if (strcmp(cmd, "snapshots") == 0) {
428 check_softlinks(fd, new_config,
430 printf("only removing old snapshots\n");
432 cleanup_softlinks(fd, new_config,
436 printf("disabled\n");
437 snapshots_disabled = 1;
440 if (check_period(snapshots_path, cmd, arg1, &savet)) {
442 cleanup_softlinks(fd, new_config,
445 r = create_snapshot(path, snapshots_path);
449 } else if (arg1 == 0) {
451 * The commands following this check can't handle
452 * a period of 0, so call the feature disabled and
453 * ignore the directive.
455 printf("disabled\n");
456 } else if (strcmp(cmd, "prune") == 0) {
457 if (check_period(snapshots_path, cmd, arg1, &savet)) {
459 printf("run - WARNING snapshot "
461 "but snapshots disabled\n");
465 r = cleanup_prune(path, snapshots_path,
466 arg1, arg2, snapshots_disabled);
470 } else if (strcmp(cmd, "rebalance") == 0) {
472 if (check_period(snapshots_path, cmd, arg1, &savet)) {
477 r = cleanup_rebalance(path, snapshots_path,
482 } else if (strcmp(cmd, "reblock") == 0) {
483 if (check_period(snapshots_path, cmd, arg1, &savet)) {
488 r = cleanup_reblock(path, snapshots_path,
493 } else if (strcmp(cmd, "recopy") == 0) {
494 if (check_period(snapshots_path, cmd, arg1, &savet)) {
499 r = cleanup_recopy(path, snapshots_path,
504 } else if (strcmp(cmd, "dedup") == 0) {
505 if (check_period(snapshots_path, cmd, arg1, &savet)) {
510 r = cleanup_dedup(path, snapshots_path,
516 printf("unknown directive\n");
520 save_period(snapshots_path, cmd, savet);
524 * Add new rebalance feature if the config doesn't have it.
525 * (old style config only).
527 if (new_config == 0 && found_rebal == 0) {
528 if ((fp = fopen(config_path, "r+")) != NULL) {
530 fprintf(fp, "rebalance 1d 5m\n");
536 * Cleanup, and delay a little
545 * Initialize new config data (new or old style)
549 config_init(const char *path, struct hammer_ioc_config *config)
551 const char *snapshots;
553 if (strcmp(path, "/tmp") == 0 ||
554 strcmp(path, "/var/tmp") == 0 ||
555 strcmp(path, "/usr/obj") == 0) {
556 snapshots = "snapshots 0d 0d\n";
558 snapshots = "snapshots 1d 60d\n";
560 bzero(config->config.text, sizeof(config->config.text));
561 snprintf(config->config.text, sizeof(config->config.text) - 1, "%s%s",
571 * Migrate configuration data from the old snapshots/config
572 * 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.
593 migrate_snapshots(int fd, const char *snapshots_path)
595 struct hammer_ioc_snapshot snapshot;
601 bzero(&snapshot, sizeof(snapshot));
603 if ((dir = opendir(snapshots_path)) != NULL) {
604 while ((den = readdir(dir)) != NULL) {
605 if (den->d_name[0] == '.')
607 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
608 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode))
609 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.
624 migrate_one_snapshot(int fd, const char *fpath,
625 struct hammer_ioc_snapshot *snapshot)
628 hammer_snapshot_data_t snap;
642 tid = (hammer_tid_t)(int64_t)-1;
644 /* fpath may contain directory components */
645 if ((ptr = strrchr(fpath, '/')) != NULL)
649 while (*ptr && *ptr != '-' && *ptr != '.')
653 r = sscanf(ptr, "%4d%2d%2d-%2d%2d",
654 &year, &month, &day, &hour, &minute);
657 bzero(&tm, sizeof(tm));
662 tm.tm_mon = month - 1;
663 tm.tm_year = year - 1900;
666 bzero(linkbuf, sizeof(linkbuf));
667 if (readlink(fpath, linkbuf, sizeof(linkbuf) - 1) > 0 &&
668 (ptr = strrchr(linkbuf, '@')) != NULL &&
669 ptr > linkbuf && ptr[-1] == '@') {
670 tid = strtoull(ptr + 1, NULL, 16);
672 if (t != (time_t)-1 && tid != (hammer_tid_t)(int64_t)-1) {
673 snap = &snapshot->snaps[snapshot->count];
674 bzero(snap, sizeof(*snap));
676 snap->ts = (uint64_t)t * 1000000ULL;
677 snprintf(snap->label, sizeof(snap->label),
681 printf(" non-canonical snapshot softlink: %s->%s\n",
686 if ((fpath == NULL && snapshot->count) ||
687 snapshot->count == HAMMER_SNAPS_PER_IOCTL) {
688 printf(" (%d snapshots)", snapshot->count);
690 if (ioctl(fd, HAMMERIOC_ADD_SNAPSHOT, snapshot) < 0) {
691 printf(" Ioctl to migrate snapshots failed: %s\n",
693 } else if (snapshot->head.error == EALREADY) {
696 } else if (snapshot->head.error) {
697 printf(" Ioctl to migrate snapshots failed: %s\n",
698 strerror(snapshot->head.error));
700 printf("index %d\n", snapshot->index);
703 snapshot->head.error = 0;
713 val = strtol(ptr, &ptr, 0);
727 errx(1, "illegal suffix converting %s", ptr);
736 dividing_slash(const char *path)
738 int len = strlen(path);
739 if (len && path[len-1] == '/')
746 * Check whether the desired period has elapsed since the last successful
747 * run. The run may take a while and cross a boundary so we remember the
748 * current time_t so we can save it later on.
750 * Periods in minutes, hours, or days are assumed to have been crossed
751 * if the local time crosses a minute, hour, or day boundary regardless
752 * of how close the last operation actually was.
754 * If ForceOpt is set always return true.
758 check_period(const char *snapshots_path, const char *cmd, int arg1,
769 localtime_r(savep, &tp1);
778 * Retrieve the start time of the last successful operation.
780 asprintf(&check_path, "%s/.%s.period", snapshots_path, cmd);
781 fp = fopen(check_path, "r");
785 if (fgets(buf, sizeof(buf), fp) == NULL) {
791 lastt = strtol(buf, NULL, 0);
792 localtime_r(&lastt, &tp2);
795 * Normalize the times. e.g. if asked to do something on a 1-day
796 * interval the operation will be performed as soon as the day
797 * turns over relative to the previous operation, even if the previous
798 * operation ran a few seconds ago just before midnight.
800 if (arg1 % 60 == 0) {
804 if (arg1 % (60 * 60) == 0) {
808 if (arg1 % (24 * 60 * 60) == 0) {
813 baset = mktime(&tp1);
814 lastt = mktime(&tp2);
817 printf("%lld vs %lld\n", (long long)(baset - lastt), (long long)arg1);
820 if ((int)(baset - lastt) >= arg1)
826 * Store the start time of the last successful operation.
830 save_period(const char *snapshots_path, const char *cmd,
837 asprintf(&ocheck_path, "%s/.%s.period", snapshots_path, cmd);
838 asprintf(&ncheck_path, "%s/.%s.period.new", snapshots_path, cmd);
839 fp = fopen(ncheck_path, "w");
841 fprintf(fp, "0x%08llx\n", (long long)savet);
843 rename(ncheck_path, ocheck_path);
846 fprintf(stderr, "hammer: Unable to create period-file %s: %s\n",
847 ncheck_path, strerror(errno));
852 * Simply count the number of softlinks in the snapshots dir
856 check_softlinks(int fd, int new_config, const char *snapshots_path)
865 * Old-style softlink-based snapshots
867 if ((dir = opendir(snapshots_path)) != NULL) {
868 while ((den = readdir(dir)) != NULL) {
869 if (den->d_name[0] == '.')
871 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
872 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode))
880 * New-style snapshots are stored as filesystem meta-data,
884 struct hammer_ioc_snapshot snapshot;
886 bzero(&snapshot, sizeof(snapshot));
888 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
889 err(2, "hammer cleanup: check_softlink "
893 res += snapshot.count;
894 } while (snapshot.head.error == 0 && snapshot.count);
900 * Clean up expired softlinks in the snapshots dir
904 cleanup_softlinks(int fd, int new_config,
905 const char *snapshots_path, int arg2, char *arg3)
913 if (arg3 != NULL && strstr(arg3, "any") != NULL)
916 if ((dir = opendir(snapshots_path)) != NULL) {
917 while ((den = readdir(dir)) != NULL) {
918 if (den->d_name[0] == '.')
920 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
921 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode) &&
922 (anylink || strncmp(den->d_name, "snap-", 5) == 0)) {
923 if (check_expired(den->d_name, arg2)) {
925 printf(" expire %s\n",
937 * New-style snapshots are stored as filesystem meta-data,
941 struct hammer_ioc_snapshot snapshot;
942 struct hammer_ioc_snapshot dsnapshot;
943 hammer_snapshot_data_t snap;
950 bzero(&snapshot, sizeof(snapshot));
951 bzero(&dsnapshot, sizeof(dsnapshot));
953 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
954 err(2, "hammer cleanup: check_softlink "
958 for (i = 0; i < snapshot.count; ++i) {
959 snap = &snapshot.snaps[i];
960 t = snap->ts / 1000000ULL;
962 if ((int)dt > arg2 || snap->tid == 0) {
963 dsnapshot.snaps[dsnapshot.count++] =
966 if ((int)dt > arg2 && VerboseOpt) {
968 strftime(snapts, sizeof(snapts),
969 "%Y-%m-%d %H:%M:%S %Z", tp);
970 printf(" expire 0x%016jx %s %s\n",
971 (uintmax_t)snap->tid,
975 if (dsnapshot.count == HAMMER_SNAPS_PER_IOCTL)
976 delete_snapshots(fd, &dsnapshot);
978 } while (snapshot.head.error == 0 && snapshot.count);
981 delete_snapshots(fd, &dsnapshot);
987 delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot)
990 if (ioctl(fd, HAMMERIOC_DEL_SNAPSHOT, dsnapshot) < 0) {
991 printf(" Ioctl to delete snapshots failed: %s\n",
995 if (dsnapshot->head.error) {
996 printf(" Ioctl to delete snapshots failed at "
998 dsnapshot->snaps[dsnapshot->index].tid,
999 strerror(dsnapshot->head.error));
1000 if (++dsnapshot->index < dsnapshot->count)
1005 dsnapshot->index = 0;
1006 dsnapshot->count = 0;
1007 dsnapshot->head.error = 0;
1011 * Take a softlink path in the form snap-yyyymmdd-hhmm and the
1012 * expiration in seconds (arg2) and return non-zero if the softlink
1017 check_expired(const char *fpath, int arg2)
1028 while (*fpath && *fpath != '-' && *fpath != '.')
1033 r = sscanf(fpath, "%4d%2d%2d-%2d%2d",
1034 &year, &month, &day, &hour, &minute);
1037 bzero(&tm, sizeof(tm));
1042 tm.tm_mon = month - 1;
1043 tm.tm_year = year - 1900;
1045 if (t == (time_t)-1)
1059 create_snapshot(const char *path, const char *snapshots_path)
1063 runcmd(&r, "hammer snapshot %s %s", path, snapshots_path);
1069 cleanup_prune(const char *path, const char *snapshots_path,
1070 int arg1 __unused, int arg2, int snapshots_disabled)
1072 const char *path_or_snapshots_path;
1075 * If the snapshots_path (e.g. /var/hammer/...) has no snapshots
1076 * in it then prune will get confused and prune the filesystem
1077 * containing the snapshots_path instead of the requested
1078 * filesystem. De-confuse prune. We need a better way.
1080 if (hammer_softprune_testdir(snapshots_path))
1081 path_or_snapshots_path = snapshots_path;
1083 path_or_snapshots_path = path;
1086 * If snapshots have been disabled run prune-everything instead
1089 if (snapshots_disabled && arg2) {
1091 "hammer -c %s/.prune.cycle -t %d prune-everything %s",
1092 snapshots_path, arg2, path);
1093 } else if (snapshots_disabled) {
1094 runcmd(NULL, "hammer prune-everything %s", path);
1096 runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune %s",
1097 snapshots_path, arg2, path_or_snapshots_path);
1099 runcmd(NULL, "hammer prune %s", path_or_snapshots_path);
1106 cleanup_rebalance(const char *path, const char *snapshots_path,
1107 int arg1 __unused, int arg2)
1109 if (VerboseOpt == 0) {
1115 "hammer -c %s/.rebalance.cycle -t %d rebalance %s",
1116 snapshots_path, arg2, path);
1117 if (VerboseOpt == 0) {
1121 if (VerboseOpt == 0)
1128 cleanup_reblock(const char *path, const char *snapshots_path,
1129 int arg1 __unused, int arg2)
1131 if (VerboseOpt == 0) {
1137 * When reblocking the B-Tree always reblock everything in normal
1141 "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s",
1142 snapshots_path, arg2, path);
1143 if (VerboseOpt == 0) {
1149 * When reblocking the inodes always reblock everything in normal
1153 "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s",
1154 snapshots_path, arg2, path);
1155 if (VerboseOpt == 0) {
1161 * When reblocking the directories always reblock everything in normal
1165 "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s",
1166 snapshots_path, arg2, path);
1167 if (VerboseOpt == 0) {
1173 * Do not reblock all the data in normal mode.
1176 "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95",
1177 snapshots_path, arg2, path);
1178 if (VerboseOpt == 0)
1185 cleanup_recopy(const char *path, const char *snapshots_path,
1186 int arg1 __unused, int arg2)
1188 if (VerboseOpt == 0) {
1193 "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s",
1194 snapshots_path, arg2, path);
1195 if (VerboseOpt == 0) {
1200 "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s",
1201 snapshots_path, arg2, path);
1202 if (VerboseOpt == 0) {
1207 "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s",
1208 snapshots_path, arg2, path);
1209 if (VerboseOpt == 0) {
1214 "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s",
1215 snapshots_path, arg2, path);
1216 if (VerboseOpt == 0)
1223 cleanup_dedup(const char *path, const char *snapshots_path __unused,
1224 int arg1 __unused, int arg2)
1226 if (VerboseOpt == 0) {
1231 runcmd(NULL, "hammer -t %d dedup %s", arg2, path);
1232 if (VerboseOpt == 0) {
1236 if (VerboseOpt == 0)
1243 runcmd(int *resp, const char *ctl, ...)
1255 * Generate the command
1258 vasprintf(&cmd, ctl, va);
1261 printf(" %s\n", cmd);
1264 * Break us down into arguments. We do not just use system() here
1265 * because it blocks SIGINT and friends.
1269 av = malloc(sizeof(char *) * nmax);
1271 for (arg = strtok(cmd, WS); arg; arg = strtok(NULL, WS)) {
1272 if (n == nmax - 1) {
1274 av = realloc(av, sizeof(char *) * nmax);
1284 if ((pid = fork()) == 0) {
1285 if (VerboseOpt < 2) {
1286 int fd = open("/dev/null", O_RDWR);
1292 } else if (pid < 0) {
1297 while (waitpid(pid, &status, 0) != pid)
1299 res = WEXITSTATUS(status);