2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sbin/hammer/cmd_cleanup.c,v 1.6 2008/10/07 22:28:41 thomas Exp $
37 * Clean up specific HAMMER filesystems or all HAMMER filesystems.
39 * If no filesystems are specified any HAMMER- or null-mounted hammer PFS's
42 * Each HAMMER filesystem may contain a configuration file. If no
43 * configuration file is present one will be created with the following
46 * snapshots 1d 60d (0d 0d for /tmp, /var/tmp, /usr/obj)
49 * #dedup 1d 5m (not enabled by default)
53 * All hammer commands create and maintain cycle files in the snapshots
56 * For HAMMER version 2- the configuration file is a named 'config' in
57 * the snapshots directory, which defaults to <pfs>/snapshots.
58 * For HAMMER version 3+ the configuration file is saved in filesystem
59 * meta-data. The snapshots directory defaults to /var/hammer/<pfs>
60 * (/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
, ...);
103 * WARNING: Do not make the SNAPSHOTS_BASE "/var/snapshots" because
104 * it will interfere with the older HAMMER VERS < 3 snapshots directory
107 #define SNAPSHOTS_BASE "/var/hammer" /* HAMMER VERS >= 3 */
110 struct didpfs
*FirstPFS
;
113 hammer_cmd_cleanup(char **av
, int ac
)
115 char *fstype
, *fs
, *path
;
116 struct statfs
*stfsbuf
;
121 mntsize
= getmntinfo(&stfsbuf
, MNT_NOWAIT
);
123 for (i
=0; i
< mntsize
; i
++) {
125 * We will cleanup in the case fstype is hammer.
126 * If we have null-mounted PFS, we check the
127 * mount source. If it looks like a PFS, we
128 * proceed to cleanup also.
130 fstype
= stfsbuf
[i
].f_fstypename
;
131 fs
= stfsbuf
[i
].f_mntfromname
;
132 if ((strcmp(fstype
, "hammer") == 0) ||
133 ((strcmp(fstype
, "null") == 0) &&
134 (strstr(fs
, "/@@0x") != NULL
||
135 strstr(fs
, "/@@-1") != NULL
))) {
136 path
= stfsbuf
[i
].f_mntonname
;
153 do_cleanup(const char *path
)
155 struct hammer_ioc_pseudofs_rw pfs
;
156 struct hammer_ioc_config config
;
157 struct hammer_ioc_version version
;
158 union hammer_ioc_mrecord_any mrec_tmp
;
159 char *snapshots_path
= NULL
;
172 struct didpfs
*didpfs
;
173 int snapshots_disabled
= 0;
174 int prune_warning
= 0;
176 int snapshots_from_pfs
= 0;
181 bzero(&pfs
, sizeof(pfs
));
182 bzero(&mrec_tmp
, sizeof(mrec_tmp
));
183 pfs
.ondisk
= &mrec_tmp
.pfs
.pfsd
;
184 pfs
.bytes
= sizeof(mrec_tmp
.pfs
.pfsd
);
187 printf("cleanup %-20s -", path
);
188 fd
= open(path
, O_RDONLY
);
190 printf(" unable to access directory: %s\n", strerror(errno
));
193 if (ioctl(fd
, HAMMERIOC_GET_PSEUDOFS
, &pfs
) < 0) {
194 printf(" not a HAMMER filesystem: %s\n", strerror(errno
));
198 if (pfs
.version
!= HAMMER_IOC_PSEUDOFS_VERSION
) {
199 printf(" unrecognized HAMMER version\n");
203 bzero(&version
, sizeof(version
));
204 if (ioctl(fd
, HAMMERIOC_GET_VERSION
, &version
) < 0) {
205 printf(" HAMMER filesystem but couldn't retrieve version!\n");
210 bzero(&config
, sizeof(config
));
211 if (version
.cur_version
>= 3) {
212 if (ioctl(fd
, HAMMERIOC_GET_CONFIG
, &config
) == 0 &&
213 config
.head
.error
== 0) {
219 * Make sure we have not already handled this PFS. Several nullfs
220 * mounts might alias the same PFS.
222 for (didpfs
= FirstPFS
; didpfs
; didpfs
= didpfs
->next
) {
223 if (bcmp(&didpfs
->uuid
, &mrec_tmp
.pfs
.pfsd
.unique_uuid
, sizeof(uuid_t
)) == 0) {
224 printf(" PFS #%d already handled\n", pfs
.pfs_id
);
229 didpfs
= malloc(sizeof(*didpfs
));
230 didpfs
->next
= FirstPFS
;
232 didpfs
->uuid
= mrec_tmp
.pfs
.pfsd
.unique_uuid
;
235 * Calculate the old snapshots directory for HAMMER VERSION < 3
237 * If the directory is explicitly specified in the PFS config
238 * we flag it and will not migrate it later.
240 if (mrec_tmp
.pfs
.pfsd
.snapshots
[0] == '/') {
241 asprintf(&snapshots_path
, "%s", mrec_tmp
.pfs
.pfsd
.snapshots
);
242 snapshots_from_pfs
= 1;
243 } else if (mrec_tmp
.pfs
.pfsd
.snapshots
[0]) {
244 printf(" WARNING: pfs-slave's snapshots dir is not absolute\n");
247 } else if (mrec_tmp
.pfs
.pfsd
.mirror_flags
& HAMMER_PFSD_SLAVE
) {
248 if (version
.cur_version
< 3) {
249 printf(" WARNING: must configure snapshot dir for PFS slave\n");
250 printf("\tWe suggest <fs>/var/slaves/<name> where "
251 "<fs> is the base HAMMER fs\n");
252 printf("\tcontaining the slave\n");
257 asprintf(&snapshots_path
,
258 "%s%ssnapshots", path
, dividing_slash(path
));
262 * Check for old-style config file
264 if (snapshots_path
) {
265 asprintf(&config_path
, "%s/config", snapshots_path
);
266 fp
= fopen(config_path
, "r");
270 * Handle upgrades to hammer version 3, move the config
271 * file into meta-data.
273 * For the old config read the file into the config structure,
274 * we will parse it out of the config structure regardless.
276 if (version
.cur_version
>= 3) {
278 printf("(migrating) ");
280 migrate_config(fp
, &config
);
281 migrate_snapshots(fd
, snapshots_path
);
283 if (ioctl(fd
, HAMMERIOC_SET_CONFIG
, &config
) < 0) {
284 printf(" cannot init meta-data config!\n");
289 } else if (new_config
== 0) {
290 config_init(path
, &config
);
291 if (ioctl(fd
, HAMMERIOC_SET_CONFIG
, &config
) < 0) {
292 printf(" cannot init meta-data config!\n");
300 * Create missing snapshots directory for HAMMER VERSION < 3
302 if (stat(snapshots_path
, &st
) < 0) {
303 if (mkdir(snapshots_path
, 0755) != 0) {
304 free(snapshots_path
);
305 printf(" unable to create snapshot dir \"%s\": %s\n",
306 snapshots_path
, strerror(errno
));
313 * Create missing config file for HAMMER VERSION < 3
316 config_init(path
, &config
);
317 fp
= fopen(config_path
, "w");
319 fwrite(config
.config
.text
, 1,
320 strlen(config
.config
.text
), fp
);
324 migrate_config(fp
, &config
);
330 * If snapshots_from_pfs is not set we calculate the new snapshots
331 * directory default (in /var) for HAMMER VERSION >= 3 and migrate
332 * the old snapshots directory over.
334 * People who have set an explicit snapshots directory will have
335 * to migrate the data manually into /var/hammer, or not bother at
336 * all. People running slaves may wish to migrate it and then
337 * clear the snapshots specification in the PFS config for the
340 if (new_config
&& snapshots_from_pfs
== 0) {
343 assert(path
[0] == '/');
344 if (strcmp(path
, "/") == 0)
345 asprintf(&npath
, "%s/root", SNAPSHOTS_BASE
);
347 asprintf(&npath
, "%s/%s", SNAPSHOTS_BASE
, path
+ 1);
348 if (snapshots_path
) {
349 if (stat(npath
, &st
) < 0 && errno
== ENOENT
) {
350 if (stat(snapshots_path
, &st
) < 0 && errno
== ENOENT
) {
351 printf(" HAMMER UPGRADE: Creating snapshots\n"
352 "\tCreating snapshots in %s\n",
354 runcmd(&r
, "mkdir -p %s", npath
);
356 printf(" HAMMER UPGRADE: Moving snapshots\n"
357 "\tMoving snapshots from %s to %s\n",
358 snapshots_path
, npath
);
359 runcmd(&r
, "mkdir -p %s", npath
);
360 runcmd(&r
, "cpdup %s %s", snapshots_path
, npath
);
362 printf("Unable to move snapshots directory!\n");
363 printf("Please fix this critical error.\n");
364 printf("Aborting cleanup of %s\n", path
);
368 runcmd(&r
, "rm -rf %s", snapshots_path
);
371 free(snapshots_path
);
372 } else if (stat(npath
, &st
) < 0 && errno
== ENOENT
) {
373 runcmd(&r
, "mkdir -p %s", npath
);
375 snapshots_path
= npath
;
379 * Lock the PFS. fd is the base directory of the mounted PFS.
381 if (flock(fd
, LOCK_EX
|LOCK_NB
) == -1) {
382 if (errno
== EWOULDBLOCK
)
383 printf(" PFS #%d locked by other process\n", pfs
.pfs_id
);
385 printf(" can not lock %s: %s\n", config_path
, strerror(errno
));
390 printf(" handle PFS #%d using %s\n", pfs
.pfs_id
, snapshots_path
);
393 * Process the config file
395 cbase
= config
.config
.text
;
397 while ((cptr
= strchr(cbase
, '\n')) != NULL
) {
398 bcopy(cbase
, buf
, cptr
- cbase
);
399 buf
[cptr
- cbase
] = 0;
402 cmd
= strtok(buf
, WS
);
403 if (cmd
== NULL
|| cmd
[0] == '#')
409 if ((ptr
= strtok(NULL
, WS
)) != NULL
) {
410 arg1
= strtosecs(ptr
);
411 if ((ptr
= strtok(NULL
, WS
)) != NULL
) {
412 arg2
= strtosecs(ptr
);
413 arg3
= strtok(NULL
, WS
);
417 printf("%20s - ", cmd
);
421 if (strcmp(cmd
, "snapshots") == 0) {
424 check_softlinks(fd
, new_config
,
426 printf("only removing old snapshots\n");
428 cleanup_softlinks(fd
, new_config
,
432 printf("disabled\n");
433 snapshots_disabled
= 1;
436 if (check_period(snapshots_path
, cmd
, arg1
, &savet
)) {
438 cleanup_softlinks(fd
, new_config
,
441 r
= create_snapshot(path
, snapshots_path
);
445 } else if (arg1
== 0) {
447 * The commands following this check can't handle
448 * a period of 0, so call the feature disabled and
449 * ignore the directive.
451 printf("disabled\n");
452 } else if (strcmp(cmd
, "prune") == 0) {
453 if (check_period(snapshots_path
, cmd
, arg1
, &savet
)) {
455 printf("run - WARNING snapshot "
457 "but snapshots disabled\n");
461 r
= cleanup_prune(path
, snapshots_path
,
462 arg1
, arg2
, snapshots_disabled
);
466 } else if (strcmp(cmd
, "rebalance") == 0) {
468 if (check_period(snapshots_path
, cmd
, arg1
, &savet
)) {
473 r
= cleanup_rebalance(path
, snapshots_path
,
478 } else if (strcmp(cmd
, "reblock") == 0) {
479 if (check_period(snapshots_path
, cmd
, arg1
, &savet
)) {
484 r
= cleanup_reblock(path
, snapshots_path
,
489 } else if (strcmp(cmd
, "recopy") == 0) {
490 if (check_period(snapshots_path
, cmd
, arg1
, &savet
)) {
495 r
= cleanup_recopy(path
, snapshots_path
,
500 } else if (strcmp(cmd
, "dedup") == 0) {
501 if (check_period(snapshots_path
, cmd
, arg1
, &savet
)) {
506 r
= cleanup_dedup(path
, snapshots_path
,
512 printf("unknown directive\n");
516 save_period(snapshots_path
, cmd
, savet
);
520 * Add new rebalance feature if the config doesn't have it.
521 * (old style config only).
523 if (new_config
== 0 && found_rebal
== 0) {
524 if ((fp
= fopen(config_path
, "r+")) != NULL
) {
526 fprintf(fp
, "rebalance 1d 5m\n");
532 * Cleanup, and delay a little
539 * Initialize new config data (new or old style)
542 config_init(const char *path
, struct hammer_ioc_config
*config
)
544 const char *snapshots
;
546 if (strcmp(path
, "/tmp") == 0 ||
547 strcmp(path
, "/var/tmp") == 0 ||
548 strcmp(path
, "/usr/obj") == 0) {
549 snapshots
= "snapshots 0d 0d\n";
551 snapshots
= "snapshots 1d 60d\n";
553 bzero(config
->config
.text
, sizeof(config
->config
.text
));
554 snprintf(config
->config
.text
, sizeof(config
->config
.text
) - 1, "%s%s",
564 * Migrate configuration data from the old snapshots/config
565 * file to the new meta-data format.
568 migrate_config(FILE *fp
, struct hammer_ioc_config
*config
)
572 n
= fread(config
->config
.text
, 1, sizeof(config
->config
.text
) - 1, fp
);
574 bzero(config
->config
.text
+ n
, sizeof(config
->config
.text
) - n
);
578 * Migrate snapshot softlinks in the snapshots directory to the
579 * new meta-data format. The softlinks are left intact, but
580 * this way the pruning code won't lose track of them if you
581 * happen to blow away the snapshots directory.
584 migrate_snapshots(int fd
, const char *snapshots_path
)
586 struct hammer_ioc_snapshot snapshot
;
592 bzero(&snapshot
, sizeof(snapshot
));
594 if ((dir
= opendir(snapshots_path
)) != NULL
) {
595 while ((den
= readdir(dir
)) != NULL
) {
596 if (den
->d_name
[0] == '.')
598 asprintf(&fpath
, "%s/%s", snapshots_path
, den
->d_name
);
599 if (lstat(fpath
, &st
) == 0 && S_ISLNK(st
.st_mode
)) {
600 migrate_one_snapshot(fd
, fpath
, &snapshot
);
606 migrate_one_snapshot(fd
, NULL
, &snapshot
);
611 * Migrate a single snapshot. If fpath is NULL the ioctl is flushed,
612 * otherwise it is flushed when it fills up.
615 migrate_one_snapshot(int fd
, const char *fpath
,
616 struct hammer_ioc_snapshot
*snapshot
)
619 struct hammer_snapshot_data
*snap
;
633 tid
= (hammer_tid_t
)(int64_t)-1;
635 /* fpath may contain directory components */
636 if ((ptr
= strrchr(fpath
, '/')) != NULL
)
640 while (*ptr
&& *ptr
!= '-' && *ptr
!= '.')
644 r
= sscanf(ptr
, "%4d%2d%2d-%2d%2d",
645 &year
, &month
, &day
, &hour
, &minute
);
648 bzero(&tm
, sizeof(tm
));
653 tm
.tm_mon
= month
- 1;
654 tm
.tm_year
= year
- 1900;
657 bzero(linkbuf
, sizeof(linkbuf
));
658 if (readlink(fpath
, linkbuf
, sizeof(linkbuf
) - 1) > 0 &&
659 (ptr
= strrchr(linkbuf
, '@')) != NULL
&&
660 ptr
> linkbuf
&& ptr
[-1] == '@') {
661 tid
= strtoull(ptr
+ 1, NULL
, 16);
663 if (t
!= (time_t)-1 && tid
!= (hammer_tid_t
)(int64_t)-1) {
664 snap
= &snapshot
->snaps
[snapshot
->count
];
665 bzero(snap
, sizeof(*snap
));
667 snap
->ts
= (u_int64_t
)t
* 1000000ULL;
668 snprintf(snap
->label
, sizeof(snap
->label
),
672 printf(" non-canonical snapshot softlink: %s->%s\n",
677 if ((fpath
== NULL
&& snapshot
->count
) ||
678 snapshot
->count
== HAMMER_SNAPS_PER_IOCTL
) {
679 printf(" (%d snapshots)", snapshot
->count
);
681 if (ioctl(fd
, HAMMERIOC_ADD_SNAPSHOT
, snapshot
) < 0) {
682 printf(" Ioctl to migrate snapshots failed: %s\n",
684 } else if (snapshot
->head
.error
== EALREADY
) {
687 } else if (snapshot
->head
.error
) {
688 printf(" Ioctl to migrate snapshots failed: %s\n",
689 strerror(snapshot
->head
.error
));
691 printf("index %d\n", snapshot
->index
);
694 snapshot
->head
.error
= 0;
704 val
= strtol(ptr
, &ptr
, 0);
718 errx(1, "illegal suffix converting %s\n", ptr
);
725 dividing_slash(const char *path
)
727 int len
= strlen(path
);
728 if (len
&& path
[len
-1] == '/')
735 * Check whether the desired period has elapsed since the last successful
736 * run. The run may take a while and cross a boundary so we remember the
737 * current time_t so we can save it later on.
739 * Periods in minutes, hours, or days are assumed to have been crossed
740 * if the local time crosses a minute, hour, or day boundary regardless
741 * of how close the last operation actually was.
743 * If ForceOpt is set always return true.
746 check_period(const char *snapshots_path
, const char *cmd
, int arg1
,
757 localtime_r(savep
, &tp1
);
766 * Retrieve the start time of the last successful operation.
768 asprintf(&check_path
, "%s/.%s.period", snapshots_path
, cmd
);
769 fp
= fopen(check_path
, "r");
773 if (fgets(buf
, sizeof(buf
), fp
) == NULL
) {
779 lastt
= strtol(buf
, NULL
, 0);
780 localtime_r(&lastt
, &tp2
);
783 * Normalize the times. e.g. if asked to do something on a 1-day
784 * interval the operation will be performed as soon as the day
785 * turns over relative to the previous operation, even if the previous
786 * operation ran a few seconds ago just before midnight.
788 if (arg1
% 60 == 0) {
792 if (arg1
% (60 * 60) == 0) {
796 if (arg1
% (24 * 60 * 60) == 0) {
801 baset
= mktime(&tp1
);
802 lastt
= mktime(&tp2
);
805 printf("%lld vs %lld\n", (long long)(baset
- lastt
), (long long)arg1
);
808 if ((int)(baset
- lastt
) >= arg1
)
814 * Store the start time of the last successful operation.
817 save_period(const char *snapshots_path
, const char *cmd
,
824 asprintf(&ocheck_path
, "%s/.%s.period", snapshots_path
, cmd
);
825 asprintf(&ncheck_path
, "%s/.%s.period.new", snapshots_path
, cmd
);
826 fp
= fopen(ncheck_path
, "w");
828 fprintf(fp
, "0x%08llx\n", (long long)savet
);
830 rename(ncheck_path
, ocheck_path
);
833 fprintf(stderr
, "hammer: Unable to create period-file %s: %s\n",
834 ncheck_path
, strerror(errno
));
839 * Simply count the number of softlinks in the snapshots dir
842 check_softlinks(int fd
, int new_config
, const char *snapshots_path
)
851 * Old-style softlink-based snapshots
853 if ((dir
= opendir(snapshots_path
)) != NULL
) {
854 while ((den
= readdir(dir
)) != NULL
) {
855 if (den
->d_name
[0] == '.')
857 asprintf(&fpath
, "%s/%s", snapshots_path
, den
->d_name
);
858 if (lstat(fpath
, &st
) == 0 && S_ISLNK(st
.st_mode
))
866 * New-style snapshots are stored as filesystem meta-data,
870 struct hammer_ioc_snapshot snapshot
;
872 bzero(&snapshot
, sizeof(snapshot
));
874 if (ioctl(fd
, HAMMERIOC_GET_SNAPSHOT
, &snapshot
) < 0) {
875 err(2, "hammer cleanup: check_softlink "
879 res
+= snapshot
.count
;
880 } while (snapshot
.head
.error
== 0 && snapshot
.count
);
886 * Clean up expired softlinks in the snapshots dir
889 cleanup_softlinks(int fd
, int new_config
,
890 const char *snapshots_path
, int arg2
, char *arg3
)
898 if (arg3
!= NULL
&& strstr(arg3
, "any") != NULL
)
901 if ((dir
= opendir(snapshots_path
)) != NULL
) {
902 while ((den
= readdir(dir
)) != NULL
) {
903 if (den
->d_name
[0] == '.')
905 asprintf(&fpath
, "%s/%s", snapshots_path
, den
->d_name
);
906 if (lstat(fpath
, &st
) == 0 && S_ISLNK(st
.st_mode
) &&
907 (anylink
|| strncmp(den
->d_name
, "snap-", 5) == 0)
909 if (check_expired(den
->d_name
, arg2
)) {
911 printf(" expire %s\n",
923 * New-style snapshots are stored as filesystem meta-data,
927 struct hammer_ioc_snapshot snapshot
;
928 struct hammer_ioc_snapshot dsnapshot
;
929 struct hammer_snapshot_data
*snap
;
936 bzero(&snapshot
, sizeof(snapshot
));
937 bzero(&dsnapshot
, sizeof(dsnapshot
));
939 if (ioctl(fd
, HAMMERIOC_GET_SNAPSHOT
, &snapshot
) < 0) {
940 err(2, "hammer cleanup: check_softlink "
944 for (i
= 0; i
< snapshot
.count
; ++i
) {
945 snap
= &snapshot
.snaps
[i
];
946 t
= snap
->ts
/ 1000000ULL;
948 if ((int)dt
> arg2
|| snap
->tid
== 0) {
949 dsnapshot
.snaps
[dsnapshot
.count
++] =
952 if ((int)dt
> arg2
&& VerboseOpt
) {
954 strftime(snapts
, sizeof(snapts
),
955 "%Y-%m-%d %H:%M:%S %Z", tp
);
956 printf(" expire 0x%016jx %s %s\n",
957 (uintmax_t)snap
->tid
,
961 if (dsnapshot
.count
== HAMMER_SNAPS_PER_IOCTL
)
962 delete_snapshots(fd
, &dsnapshot
);
964 } while (snapshot
.head
.error
== 0 && snapshot
.count
);
967 delete_snapshots(fd
, &dsnapshot
);
972 delete_snapshots(int fd
, struct hammer_ioc_snapshot
*dsnapshot
)
975 if (ioctl(fd
, HAMMERIOC_DEL_SNAPSHOT
, dsnapshot
) < 0) {
976 printf(" Ioctl to delete snapshots failed: %s\n",
980 if (dsnapshot
->head
.error
) {
981 printf(" Ioctl to delete snapshots failed at "
983 dsnapshot
->snaps
[dsnapshot
->index
].tid
,
984 strerror(dsnapshot
->head
.error
));
985 if (++dsnapshot
->index
< dsnapshot
->count
)
990 dsnapshot
->index
= 0;
991 dsnapshot
->count
= 0;
992 dsnapshot
->head
.error
= 0;
996 * Take a softlink path in the form snap-yyyymmdd-hhmm and the
997 * expiration in seconds (arg2) and return non-zero if the softlink
1001 check_expired(const char *fpath
, int arg2
)
1012 while (*fpath
&& *fpath
!= '-' && *fpath
!= '.')
1017 r
= sscanf(fpath
, "%4d%2d%2d-%2d%2d",
1018 &year
, &month
, &day
, &hour
, &minute
);
1021 bzero(&tm
, sizeof(tm
));
1026 tm
.tm_mon
= month
- 1;
1027 tm
.tm_year
= year
- 1900;
1029 if (t
== (time_t)-1)
1042 create_snapshot(const char *path
, const char *snapshots_path
)
1046 runcmd(&r
, "hammer snapshot %s %s", path
, snapshots_path
);
1051 cleanup_prune(const char *path __unused
, const char *snapshots_path
,
1052 int arg1 __unused
, int arg2
, int snapshots_disabled
)
1055 * If snapshots have been disabled run prune-everything instead
1058 if (snapshots_disabled
&& arg2
) {
1059 runcmd(NULL
, "hammer -c %s/.prune.cycle -t %d prune-everything %s",
1060 snapshots_path
, arg2
, path
);
1061 } else if (snapshots_disabled
) {
1062 runcmd(NULL
, "hammer prune-everything %s", path
);
1064 runcmd(NULL
, "hammer -c %s/.prune.cycle -t %d prune %s",
1065 snapshots_path
, arg2
, snapshots_path
);
1067 runcmd(NULL
, "hammer prune %s", snapshots_path
);
1073 cleanup_rebalance(const char *path
, const char *snapshots_path
,
1074 int arg1 __unused
, int arg2
)
1076 if (VerboseOpt
== 0) {
1082 "hammer -c %s/.rebalance.cycle -t %d rebalance %s",
1083 snapshots_path
, arg2
, path
);
1084 if (VerboseOpt
== 0) {
1088 if (VerboseOpt
== 0)
1094 cleanup_reblock(const char *path
, const char *snapshots_path
,
1095 int arg1 __unused
, int arg2
)
1097 if (VerboseOpt
== 0) {
1103 * When reblocking the B-Tree always reblock everything in normal
1107 "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s",
1108 snapshots_path
, arg2
, path
);
1109 if (VerboseOpt
== 0) {
1115 * When reblocking the inodes always reblock everything in normal
1119 "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s",
1120 snapshots_path
, arg2
, path
);
1121 if (VerboseOpt
== 0) {
1127 * When reblocking the directories always reblock everything in normal
1131 "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s",
1132 snapshots_path
, arg2
, path
);
1133 if (VerboseOpt
== 0) {
1139 * Do not reblock all the data in normal mode.
1142 "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95",
1143 snapshots_path
, arg2
, path
);
1144 if (VerboseOpt
== 0)
1150 cleanup_recopy(const char *path
, const char *snapshots_path
,
1151 int arg1 __unused
, int arg2
)
1153 if (VerboseOpt
== 0) {
1158 "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s",
1159 snapshots_path
, arg2
, path
);
1160 if (VerboseOpt
== 0) {
1165 "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s",
1166 snapshots_path
, arg2
, path
);
1167 if (VerboseOpt
== 0) {
1172 "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s",
1173 snapshots_path
, arg2
, path
);
1174 if (VerboseOpt
== 0) {
1179 "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s",
1180 snapshots_path
, arg2
, path
);
1181 if (VerboseOpt
== 0)
1187 cleanup_dedup(const char *path
, const char *snapshots_path __unused
,
1188 int arg1 __unused
, int arg2
)
1190 if (VerboseOpt
== 0) {
1195 runcmd(NULL
, "hammer -t %d dedup %s", arg2
, path
);
1196 if (VerboseOpt
== 0) {
1200 if (VerboseOpt
== 0)
1207 runcmd(int *resp
, const char *ctl
, ...)
1219 * Generate the command
1222 vasprintf(&cmd
, ctl
, va
);
1225 printf(" %s\n", cmd
);
1228 * Break us down into arguments. We do not just use system() here
1229 * because it blocks SIGINT and friends.
1233 av
= malloc(sizeof(char *) * nmax
);
1235 for (arg
= strtok(cmd
, WS
); arg
; arg
= strtok(NULL
, WS
)) {
1236 if (n
== nmax
- 1) {
1238 av
= realloc(av
, sizeof(char *) * nmax
);
1248 if ((pid
= fork()) == 0) {
1249 if (VerboseOpt
< 2) {
1250 int fd
= open("/dev/null", O_RDWR
);
1256 } else if (pid
< 0) {
1261 while (waitpid(pid
, &status
, 0) != pid
)
1263 res
= WEXITSTATUS(status
);