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(&pfs, sizeof(pfs));
176 bzero(&mrec_tmp, sizeof(mrec_tmp));
177 pfs.ondisk = &mrec_tmp.pfs.pfsd;
178 pfs.bytes = sizeof(mrec_tmp.pfs.pfsd);
181 printf("cleanup %-20s -", path);
182 fd = open(path, O_RDONLY);
184 printf(" unable to access directory: %s\n", strerror(errno));
187 if (ioctl(fd, HAMMERIOC_GET_PSEUDOFS, &pfs) < 0) {
188 printf(" not a HAMMER filesystem: %s\n", strerror(errno));
192 if (pfs.version != HAMMER_IOC_PSEUDOFS_VERSION) {
193 printf(" unrecognized HAMMER version\n");
197 bzero(&version, sizeof(version));
198 if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) {
199 printf(" HAMMER filesystem but couldn't retrieve version!\n");
204 bzero(&config, sizeof(config));
205 if (version.cur_version >= 3) {
206 if (ioctl(fd, HAMMERIOC_GET_CONFIG, &config) == 0 &&
207 config.head.error == 0) {
213 * Make sure we have not already handled this PFS. Several nullfs
214 * mounts might alias the same PFS.
216 for (didpfs = FirstPFS; didpfs; didpfs = didpfs->next) {
217 if (bcmp(&didpfs->uuid, &mrec_tmp.pfs.pfsd.unique_uuid, sizeof(uuid_t)) == 0) {
218 printf(" PFS #%d already handled\n", pfs.pfs_id);
223 didpfs = malloc(sizeof(*didpfs));
224 didpfs->next = FirstPFS;
226 didpfs->uuid = mrec_tmp.pfs.pfsd.unique_uuid;
229 * Calculate the old snapshots directory for HAMMER VERSION < 3
231 * If the directory is explicitly specified in the PFS config
232 * we flag it and will not migrate it later.
234 if (mrec_tmp.pfs.pfsd.snapshots[0] == '/') {
235 asprintf(&snapshots_path, "%s", mrec_tmp.pfs.pfsd.snapshots);
236 snapshots_from_pfs = 1;
237 } else if (mrec_tmp.pfs.pfsd.snapshots[0]) {
238 printf(" WARNING: pfs-slave's snapshots dir is not absolute\n");
241 } else if (hammer_is_pfs_slave(&mrec_tmp.pfs.pfsd)) {
242 if (version.cur_version < 3) {
243 printf(" WARNING: must configure snapshot dir for PFS slave\n");
244 printf("\tWe suggest <fs>/var/slaves/<name> where "
245 "<fs> is the base HAMMER fs\n");
246 printf("\tcontaining the slave\n");
251 asprintf(&snapshots_path,
252 "%s%ssnapshots", path, dividing_slash(path));
256 * Check for old-style config file
258 if (snapshots_path) {
259 asprintf(&config_path, "%s/config", snapshots_path);
260 fp = fopen(config_path, "r");
264 * Handle upgrades to hammer version 3, move the config
265 * file into meta-data.
267 * For the old config read the file into the config structure,
268 * we will parse it out of the config structure regardless.
270 if (version.cur_version >= 3) {
272 printf("(migrating) ");
274 migrate_config(fp, &config);
275 migrate_snapshots(fd, snapshots_path);
277 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
278 printf(" cannot init meta-data config!\n");
283 } else if (new_config == 0) {
284 config_init(path, &config);
285 if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) {
286 printf(" cannot init meta-data config!\n");
294 * Create missing snapshots directory for HAMMER VERSION < 3
296 if (stat(snapshots_path, &st) < 0) {
297 if (mkdir(snapshots_path, 0755) != 0) {
298 free(snapshots_path);
299 printf(" unable to create snapshot dir \"%s\": %s\n",
300 snapshots_path, strerror(errno));
307 * Create missing config file for HAMMER VERSION < 3
310 config_init(path, &config);
311 fp = fopen(config_path, "w");
313 fwrite(config.config.text, 1,
314 strlen(config.config.text), fp);
318 migrate_config(fp, &config);
324 * If snapshots_from_pfs is not set we calculate the new snapshots
325 * directory default (in /var) for HAMMER VERSION >= 3 and migrate
326 * the old snapshots directory over.
328 * People who have set an explicit snapshots directory will have
329 * to migrate the data manually into /var/hammer, or not bother at
330 * all. People running slaves may wish to migrate it and then
331 * clear the snapshots specification in the PFS config for the
334 if (new_config && snapshots_from_pfs == 0) {
337 if (path[0] != '/') {
338 printf(" path must start with '/'\n");
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);
389 struct pidfh *pfh = NULL;
390 static char pidfile[PIDFILE_BUFSIZE];
392 snprintf (pidfile, PIDFILE_BUFSIZE, "%s/hammer.cleanup.%d",
393 pidfile_loc, getpid());
394 pfh = pidfile_open(pidfile, 0644, NULL);
396 warn ("Unable to open or create %s", pidfile);
401 * Process the config file
403 cbase = config.config.text;
405 while ((cptr = strchr(cbase, '\n')) != NULL) {
406 bcopy(cbase, buf, cptr - cbase);
407 buf[cptr - cbase] = 0;
410 cmd = strtok(buf, WS);
411 if (cmd == NULL || cmd[0] == '#')
417 if ((ptr = strtok(NULL, WS)) != NULL) {
418 arg1 = strtosecs(ptr);
419 if ((ptr = strtok(NULL, WS)) != NULL) {
420 arg2 = strtosecs(ptr);
421 arg3 = strtok(NULL, WS);
425 printf("%20s - ", cmd);
429 if (strcmp(cmd, "snapshots") == 0) {
432 check_softlinks(fd, new_config,
434 printf("only removing old snapshots\n");
436 cleanup_softlinks(fd, new_config,
440 printf("disabled\n");
441 snapshots_disabled = 1;
444 if (check_period(snapshots_path, cmd, arg1, &savet)) {
446 cleanup_softlinks(fd, new_config,
449 r = create_snapshot(path, snapshots_path);
453 } else if (arg1 == 0) {
455 * The commands following this check can't handle
456 * a period of 0, so call the feature disabled and
457 * ignore the directive.
459 printf("disabled\n");
460 } else if (strcmp(cmd, "prune") == 0) {
461 if (check_period(snapshots_path, cmd, arg1, &savet)) {
463 printf("run - WARNING snapshot "
465 "but snapshots disabled\n");
469 r = cleanup_prune(path, snapshots_path,
470 arg1, arg2, snapshots_disabled);
474 } else if (strcmp(cmd, "rebalance") == 0) {
476 if (check_period(snapshots_path, cmd, arg1, &savet)) {
481 r = cleanup_rebalance(path, snapshots_path,
486 } else if (strcmp(cmd, "reblock") == 0) {
487 if (check_period(snapshots_path, cmd, arg1, &savet)) {
492 r = cleanup_reblock(path, snapshots_path,
497 } else if (strcmp(cmd, "recopy") == 0) {
498 if (check_period(snapshots_path, cmd, arg1, &savet)) {
503 r = cleanup_recopy(path, snapshots_path,
508 } else if (strcmp(cmd, "dedup") == 0) {
509 if (check_period(snapshots_path, cmd, arg1, &savet)) {
514 r = cleanup_dedup(path, snapshots_path,
520 printf("unknown directive\n");
524 save_period(snapshots_path, cmd, savet);
528 * Add new rebalance feature if the config doesn't have it.
529 * (old style config only).
531 if (new_config == 0 && found_rebal == 0) {
532 if ((fp = fopen(config_path, "r+")) != NULL) {
534 fprintf(fp, "rebalance 1d 5m\n");
540 * Cleanup, and delay a little
549 * Initialize new config data (new or old style)
552 config_init(const char *path, struct hammer_ioc_config *config)
554 const char *snapshots;
556 if (strcmp(path, "/tmp") == 0 ||
557 strcmp(path, "/var/tmp") == 0 ||
558 strcmp(path, "/usr/obj") == 0) {
559 snapshots = "snapshots 0d 0d\n";
561 snapshots = "snapshots 1d 60d\n";
563 bzero(config->config.text, sizeof(config->config.text));
564 snprintf(config->config.text, sizeof(config->config.text) - 1, "%s%s",
574 * Migrate configuration data from the old snapshots/config
575 * file to the new meta-data format.
578 migrate_config(FILE *fp, struct hammer_ioc_config *config)
582 n = fread(config->config.text, 1, sizeof(config->config.text) - 1, fp);
584 bzero(config->config.text + n, sizeof(config->config.text) - n);
588 * Migrate snapshot softlinks in the snapshots directory to the
589 * new meta-data format. The softlinks are left intact, but
590 * this way the pruning code won't lose track of them if you
591 * happen to blow away the snapshots directory.
594 migrate_snapshots(int fd, const char *snapshots_path)
596 struct hammer_ioc_snapshot snapshot;
602 bzero(&snapshot, sizeof(snapshot));
604 if ((dir = opendir(snapshots_path)) != NULL) {
605 while ((den = readdir(dir)) != NULL) {
606 if (den->d_name[0] == '.')
608 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
609 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode)) {
610 migrate_one_snapshot(fd, fpath, &snapshot);
616 migrate_one_snapshot(fd, NULL, &snapshot);
621 * Migrate a single snapshot. If fpath is NULL the ioctl is flushed,
622 * otherwise it is flushed when it fills up.
625 migrate_one_snapshot(int fd, const char *fpath,
626 struct hammer_ioc_snapshot *snapshot)
629 struct hammer_snapshot_data *snap;
643 tid = (hammer_tid_t)(int64_t)-1;
645 /* fpath may contain directory components */
646 if ((ptr = strrchr(fpath, '/')) != NULL)
650 while (*ptr && *ptr != '-' && *ptr != '.')
654 r = sscanf(ptr, "%4d%2d%2d-%2d%2d",
655 &year, &month, &day, &hour, &minute);
658 bzero(&tm, sizeof(tm));
663 tm.tm_mon = month - 1;
664 tm.tm_year = year - 1900;
667 bzero(linkbuf, sizeof(linkbuf));
668 if (readlink(fpath, linkbuf, sizeof(linkbuf) - 1) > 0 &&
669 (ptr = strrchr(linkbuf, '@')) != NULL &&
670 ptr > linkbuf && ptr[-1] == '@') {
671 tid = strtoull(ptr + 1, NULL, 16);
673 if (t != (time_t)-1 && tid != (hammer_tid_t)(int64_t)-1) {
674 snap = &snapshot->snaps[snapshot->count];
675 bzero(snap, sizeof(*snap));
677 snap->ts = (uint64_t)t * 1000000ULL;
678 snprintf(snap->label, sizeof(snap->label),
682 printf(" non-canonical snapshot softlink: %s->%s\n",
687 if ((fpath == NULL && snapshot->count) ||
688 snapshot->count == HAMMER_SNAPS_PER_IOCTL) {
689 printf(" (%d snapshots)", snapshot->count);
691 if (ioctl(fd, HAMMERIOC_ADD_SNAPSHOT, snapshot) < 0) {
692 printf(" Ioctl to migrate snapshots failed: %s\n",
694 } else if (snapshot->head.error == EALREADY) {
697 } else if (snapshot->head.error) {
698 printf(" Ioctl to migrate snapshots failed: %s\n",
699 strerror(snapshot->head.error));
701 printf("index %d\n", snapshot->index);
704 snapshot->head.error = 0;
714 val = strtol(ptr, &ptr, 0);
728 errx(1, "illegal suffix converting %s\n", ptr);
735 dividing_slash(const char *path)
737 int len = strlen(path);
738 if (len && path[len-1] == '/')
745 * Check whether the desired period has elapsed since the last successful
746 * run. The run may take a while and cross a boundary so we remember the
747 * current time_t so we can save it later on.
749 * Periods in minutes, hours, or days are assumed to have been crossed
750 * if the local time crosses a minute, hour, or day boundary regardless
751 * of how close the last operation actually was.
753 * If ForceOpt is set always return true.
756 check_period(const char *snapshots_path, const char *cmd, int arg1,
767 localtime_r(savep, &tp1);
776 * Retrieve the start time of the last successful operation.
778 asprintf(&check_path, "%s/.%s.period", snapshots_path, cmd);
779 fp = fopen(check_path, "r");
783 if (fgets(buf, sizeof(buf), fp) == NULL) {
789 lastt = strtol(buf, NULL, 0);
790 localtime_r(&lastt, &tp2);
793 * Normalize the times. e.g. if asked to do something on a 1-day
794 * interval the operation will be performed as soon as the day
795 * turns over relative to the previous operation, even if the previous
796 * operation ran a few seconds ago just before midnight.
798 if (arg1 % 60 == 0) {
802 if (arg1 % (60 * 60) == 0) {
806 if (arg1 % (24 * 60 * 60) == 0) {
811 baset = mktime(&tp1);
812 lastt = mktime(&tp2);
815 printf("%lld vs %lld\n", (long long)(baset - lastt), (long long)arg1);
818 if ((int)(baset - lastt) >= arg1)
824 * Store the start time of the last successful operation.
827 save_period(const char *snapshots_path, const char *cmd,
834 asprintf(&ocheck_path, "%s/.%s.period", snapshots_path, cmd);
835 asprintf(&ncheck_path, "%s/.%s.period.new", snapshots_path, cmd);
836 fp = fopen(ncheck_path, "w");
838 fprintf(fp, "0x%08llx\n", (long long)savet);
840 rename(ncheck_path, ocheck_path);
843 fprintf(stderr, "hammer: Unable to create period-file %s: %s\n",
844 ncheck_path, strerror(errno));
849 * Simply count the number of softlinks in the snapshots dir
852 check_softlinks(int fd, int new_config, const char *snapshots_path)
861 * Old-style softlink-based snapshots
863 if ((dir = opendir(snapshots_path)) != NULL) {
864 while ((den = readdir(dir)) != NULL) {
865 if (den->d_name[0] == '.')
867 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
868 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode))
876 * New-style snapshots are stored as filesystem meta-data,
880 struct hammer_ioc_snapshot snapshot;
882 bzero(&snapshot, sizeof(snapshot));
884 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
885 err(2, "hammer cleanup: check_softlink "
889 res += snapshot.count;
890 } while (snapshot.head.error == 0 && snapshot.count);
896 * Clean up expired softlinks in the snapshots dir
899 cleanup_softlinks(int fd, int new_config,
900 const char *snapshots_path, int arg2, char *arg3)
908 if (arg3 != NULL && strstr(arg3, "any") != NULL)
911 if ((dir = opendir(snapshots_path)) != NULL) {
912 while ((den = readdir(dir)) != NULL) {
913 if (den->d_name[0] == '.')
915 asprintf(&fpath, "%s/%s", snapshots_path, den->d_name);
916 if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode) &&
917 (anylink || strncmp(den->d_name, "snap-", 5) == 0)) {
918 if (check_expired(den->d_name, arg2)) {
920 printf(" expire %s\n",
932 * New-style snapshots are stored as filesystem meta-data,
936 struct hammer_ioc_snapshot snapshot;
937 struct hammer_ioc_snapshot dsnapshot;
938 struct hammer_snapshot_data *snap;
945 bzero(&snapshot, sizeof(snapshot));
946 bzero(&dsnapshot, sizeof(dsnapshot));
948 if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) {
949 err(2, "hammer cleanup: check_softlink "
953 for (i = 0; i < snapshot.count; ++i) {
954 snap = &snapshot.snaps[i];
955 t = snap->ts / 1000000ULL;
957 if ((int)dt > arg2 || snap->tid == 0) {
958 dsnapshot.snaps[dsnapshot.count++] =
961 if ((int)dt > arg2 && VerboseOpt) {
963 strftime(snapts, sizeof(snapts),
964 "%Y-%m-%d %H:%M:%S %Z", tp);
965 printf(" expire 0x%016jx %s %s\n",
966 (uintmax_t)snap->tid,
970 if (dsnapshot.count == HAMMER_SNAPS_PER_IOCTL)
971 delete_snapshots(fd, &dsnapshot);
973 } while (snapshot.head.error == 0 && snapshot.count);
976 delete_snapshots(fd, &dsnapshot);
981 delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot)
984 if (ioctl(fd, HAMMERIOC_DEL_SNAPSHOT, dsnapshot) < 0) {
985 printf(" Ioctl to delete snapshots failed: %s\n",
989 if (dsnapshot->head.error) {
990 printf(" Ioctl to delete snapshots failed at "
992 dsnapshot->snaps[dsnapshot->index].tid,
993 strerror(dsnapshot->head.error));
994 if (++dsnapshot->index < dsnapshot->count)
999 dsnapshot->index = 0;
1000 dsnapshot->count = 0;
1001 dsnapshot->head.error = 0;
1005 * Take a softlink path in the form snap-yyyymmdd-hhmm and the
1006 * expiration in seconds (arg2) and return non-zero if the softlink
1010 check_expired(const char *fpath, int arg2)
1021 while (*fpath && *fpath != '-' && *fpath != '.')
1026 r = sscanf(fpath, "%4d%2d%2d-%2d%2d",
1027 &year, &month, &day, &hour, &minute);
1030 bzero(&tm, sizeof(tm));
1035 tm.tm_mon = month - 1;
1036 tm.tm_year = year - 1900;
1038 if (t == (time_t)-1)
1051 create_snapshot(const char *path, const char *snapshots_path)
1055 runcmd(&r, "hammer snapshot %s %s", path, snapshots_path);
1060 cleanup_prune(const char *path, const char *snapshots_path,
1061 int arg1 __unused, int arg2, int snapshots_disabled)
1063 const char *path_or_snapshots_path;
1066 * If the snapshots_path (e.g. /var/hammer/...) has no snapshots
1067 * in it then prune will get confused and prune the filesystem
1068 * containing the snapshots_path instead of the requested
1069 * filesystem. De-confuse prune. We need a better way.
1071 if (hammer_softprune_testdir(snapshots_path))
1072 path_or_snapshots_path = snapshots_path;
1074 path_or_snapshots_path = path;
1077 * If snapshots have been disabled run prune-everything instead
1080 if (snapshots_disabled && arg2) {
1082 "hammer -c %s/.prune.cycle -t %d prune-everything %s",
1083 snapshots_path, arg2, path);
1084 } else if (snapshots_disabled) {
1085 runcmd(NULL, "hammer prune-everything %s", path);
1087 runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune %s",
1088 snapshots_path, arg2, path_or_snapshots_path);
1090 runcmd(NULL, "hammer prune %s", path_or_snapshots_path);
1096 cleanup_rebalance(const char *path, const char *snapshots_path,
1097 int arg1 __unused, int arg2)
1099 if (VerboseOpt == 0) {
1105 "hammer -c %s/.rebalance.cycle -t %d rebalance %s",
1106 snapshots_path, arg2, path);
1107 if (VerboseOpt == 0) {
1111 if (VerboseOpt == 0)
1117 cleanup_reblock(const char *path, const char *snapshots_path,
1118 int arg1 __unused, int arg2)
1120 if (VerboseOpt == 0) {
1126 * When reblocking the B-Tree always reblock everything in normal
1130 "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s",
1131 snapshots_path, arg2, path);
1132 if (VerboseOpt == 0) {
1138 * When reblocking the inodes always reblock everything in normal
1142 "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s",
1143 snapshots_path, arg2, path);
1144 if (VerboseOpt == 0) {
1150 * When reblocking the directories always reblock everything in normal
1154 "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s",
1155 snapshots_path, arg2, path);
1156 if (VerboseOpt == 0) {
1162 * Do not reblock all the data in normal mode.
1165 "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95",
1166 snapshots_path, arg2, path);
1167 if (VerboseOpt == 0)
1173 cleanup_recopy(const char *path, const char *snapshots_path,
1174 int arg1 __unused, int arg2)
1176 if (VerboseOpt == 0) {
1181 "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s",
1182 snapshots_path, arg2, path);
1183 if (VerboseOpt == 0) {
1188 "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s",
1189 snapshots_path, arg2, path);
1190 if (VerboseOpt == 0) {
1195 "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s",
1196 snapshots_path, arg2, path);
1197 if (VerboseOpt == 0) {
1202 "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s",
1203 snapshots_path, arg2, path);
1204 if (VerboseOpt == 0)
1210 cleanup_dedup(const char *path, const char *snapshots_path __unused,
1211 int arg1 __unused, int arg2)
1213 if (VerboseOpt == 0) {
1218 runcmd(NULL, "hammer -t %d dedup %s", arg2, path);
1219 if (VerboseOpt == 0) {
1223 if (VerboseOpt == 0)
1230 runcmd(int *resp, const char *ctl, ...)
1242 * Generate the command
1245 vasprintf(&cmd, ctl, va);
1248 printf(" %s\n", cmd);
1251 * Break us down into arguments. We do not just use system() here
1252 * because it blocks SIGINT and friends.
1256 av = malloc(sizeof(char *) * nmax);
1258 for (arg = strtok(cmd, WS); arg; arg = strtok(NULL, WS)) {
1259 if (n == nmax - 1) {
1261 av = realloc(av, sizeof(char *) * nmax);
1271 if ((pid = fork()) == 0) {
1272 if (VerboseOpt < 2) {
1273 int fd = open("/dev/null", O_RDWR);
1279 } else if (pid < 0) {
1284 while (waitpid(pid, &status, 0) != pid)
1286 res = WEXITSTATUS(status);