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)
548 config_init(const char *path
, struct hammer_ioc_config
*config
)
550 const char *snapshots
;
552 if (strcmp(path
, "/tmp") == 0 ||
553 strcmp(path
, "/var/tmp") == 0 ||
554 strcmp(path
, "/usr/obj") == 0) {
555 snapshots
= "snapshots 0d 0d\n";
557 snapshots
= "snapshots 1d 60d\n";
559 bzero(config
->config
.text
, sizeof(config
->config
.text
));
560 snprintf(config
->config
.text
, sizeof(config
->config
.text
) - 1, "%s%s",
570 * Migrate configuration data from the old snapshots/config
571 * file to the new meta-data format.
574 migrate_config(FILE *fp
, struct hammer_ioc_config
*config
)
578 n
= fread(config
->config
.text
, 1, sizeof(config
->config
.text
) - 1, fp
);
580 bzero(config
->config
.text
+ n
, sizeof(config
->config
.text
) - n
);
584 * Migrate snapshot softlinks in the snapshots directory to the
585 * new meta-data format. The softlinks are left intact, but
586 * this way the pruning code won't lose track of them if you
587 * happen to blow away the snapshots directory.
590 migrate_snapshots(int fd
, const char *snapshots_path
)
592 struct hammer_ioc_snapshot snapshot
;
598 bzero(&snapshot
, sizeof(snapshot
));
600 if ((dir
= opendir(snapshots_path
)) != NULL
) {
601 while ((den
= readdir(dir
)) != NULL
) {
602 if (den
->d_name
[0] == '.')
604 asprintf(&fpath
, "%s/%s", snapshots_path
, den
->d_name
);
605 if (lstat(fpath
, &st
) == 0 && S_ISLNK(st
.st_mode
))
606 migrate_one_snapshot(fd
, fpath
, &snapshot
);
611 migrate_one_snapshot(fd
, NULL
, &snapshot
);
616 * Migrate a single snapshot. If fpath is NULL the ioctl is flushed,
617 * otherwise it is flushed when it fills up.
620 migrate_one_snapshot(int fd
, const char *fpath
,
621 struct hammer_ioc_snapshot
*snapshot
)
624 hammer_snapshot_data_t snap
;
638 tid
= (hammer_tid_t
)(int64_t)-1;
640 /* fpath may contain directory components */
641 if ((ptr
= strrchr(fpath
, '/')) != NULL
)
645 while (*ptr
&& *ptr
!= '-' && *ptr
!= '.')
649 r
= sscanf(ptr
, "%4d%2d%2d-%2d%2d",
650 &year
, &month
, &day
, &hour
, &minute
);
653 bzero(&tm
, sizeof(tm
));
658 tm
.tm_mon
= month
- 1;
659 tm
.tm_year
= year
- 1900;
662 bzero(linkbuf
, sizeof(linkbuf
));
663 if (readlink(fpath
, linkbuf
, sizeof(linkbuf
) - 1) > 0 &&
664 (ptr
= strrchr(linkbuf
, '@')) != NULL
&&
665 ptr
> linkbuf
&& ptr
[-1] == '@') {
666 tid
= strtoull(ptr
+ 1, NULL
, 16);
668 if (t
!= (time_t)-1 && tid
!= (hammer_tid_t
)(int64_t)-1) {
669 snap
= &snapshot
->snaps
[snapshot
->count
];
670 bzero(snap
, sizeof(*snap
));
672 snap
->ts
= (uint64_t)t
* 1000000ULL;
673 snprintf(snap
->label
, sizeof(snap
->label
),
677 printf(" non-canonical snapshot softlink: %s->%s\n",
682 if ((fpath
== NULL
&& snapshot
->count
) ||
683 snapshot
->count
== HAMMER_SNAPS_PER_IOCTL
) {
684 printf(" (%d snapshots)", snapshot
->count
);
686 if (ioctl(fd
, HAMMERIOC_ADD_SNAPSHOT
, snapshot
) < 0) {
687 printf(" Ioctl to migrate snapshots failed: %s\n",
689 } else if (snapshot
->head
.error
== EALREADY
) {
692 } else if (snapshot
->head
.error
) {
693 printf(" Ioctl to migrate snapshots failed: %s\n",
694 strerror(snapshot
->head
.error
));
696 printf("index %d\n", snapshot
->index
);
699 snapshot
->head
.error
= 0;
709 val
= strtol(ptr
, &ptr
, 0);
723 errx(1, "illegal suffix converting %s", ptr
);
731 dividing_slash(const char *path
)
733 int len
= strlen(path
);
734 if (len
&& path
[len
-1] == '/')
741 * Check whether the desired period has elapsed since the last successful
742 * run. The run may take a while and cross a boundary so we remember the
743 * current time_t so we can save it later on.
745 * Periods in minutes, hours, or days are assumed to have been crossed
746 * if the local time crosses a minute, hour, or day boundary regardless
747 * of how close the last operation actually was.
749 * If ForceOpt is set always return true.
752 check_period(const char *snapshots_path
, const char *cmd
, int arg1
,
763 localtime_r(savep
, &tp1
);
772 * Retrieve the start time of the last successful operation.
774 asprintf(&check_path
, "%s/.%s.period", snapshots_path
, cmd
);
775 fp
= fopen(check_path
, "r");
779 if (fgets(buf
, sizeof(buf
), fp
) == NULL
) {
785 lastt
= strtol(buf
, NULL
, 0);
786 localtime_r(&lastt
, &tp2
);
789 * Normalize the times. e.g. if asked to do something on a 1-day
790 * interval the operation will be performed as soon as the day
791 * turns over relative to the previous operation, even if the previous
792 * operation ran a few seconds ago just before midnight.
794 if (arg1
% 60 == 0) {
798 if (arg1
% (60 * 60) == 0) {
802 if (arg1
% (24 * 60 * 60) == 0) {
807 baset
= mktime(&tp1
);
808 lastt
= mktime(&tp2
);
811 printf("%lld vs %lld\n", (long long)(baset
- lastt
), (long long)arg1
);
814 if ((int)(baset
- lastt
) >= arg1
)
820 * Store the start time of the last successful operation.
823 save_period(const char *snapshots_path
, const char *cmd
,
830 asprintf(&ocheck_path
, "%s/.%s.period", snapshots_path
, cmd
);
831 asprintf(&ncheck_path
, "%s/.%s.period.new", snapshots_path
, cmd
);
832 fp
= fopen(ncheck_path
, "w");
834 fprintf(fp
, "0x%08llx\n", (long long)savet
);
836 rename(ncheck_path
, ocheck_path
);
839 fprintf(stderr
, "hammer: Unable to create period-file %s: %s\n",
840 ncheck_path
, strerror(errno
));
845 * Simply count the number of softlinks in the snapshots dir
848 check_softlinks(int fd
, int new_config
, const char *snapshots_path
)
857 * Old-style softlink-based snapshots
859 if ((dir
= opendir(snapshots_path
)) != NULL
) {
860 while ((den
= readdir(dir
)) != NULL
) {
861 if (den
->d_name
[0] == '.')
863 asprintf(&fpath
, "%s/%s", snapshots_path
, den
->d_name
);
864 if (lstat(fpath
, &st
) == 0 && S_ISLNK(st
.st_mode
))
872 * New-style snapshots are stored as filesystem meta-data,
876 struct hammer_ioc_snapshot snapshot
;
878 bzero(&snapshot
, sizeof(snapshot
));
880 if (ioctl(fd
, HAMMERIOC_GET_SNAPSHOT
, &snapshot
) < 0) {
881 err(2, "hammer cleanup: check_softlink "
885 res
+= snapshot
.count
;
886 } while (snapshot
.head
.error
== 0 && snapshot
.count
);
892 * Clean up expired softlinks in the snapshots dir
895 cleanup_softlinks(int fd
, int new_config
,
896 const char *snapshots_path
, int arg2
, char *arg3
)
904 if (arg3
!= NULL
&& strstr(arg3
, "any") != NULL
)
907 if ((dir
= opendir(snapshots_path
)) != NULL
) {
908 while ((den
= readdir(dir
)) != NULL
) {
909 if (den
->d_name
[0] == '.')
911 asprintf(&fpath
, "%s/%s", snapshots_path
, den
->d_name
);
912 if (lstat(fpath
, &st
) == 0 && S_ISLNK(st
.st_mode
) &&
913 (anylink
|| strncmp(den
->d_name
, "snap-", 5) == 0)) {
914 if (check_expired(den
->d_name
, arg2
)) {
916 printf(" expire %s\n",
928 * New-style snapshots are stored as filesystem meta-data,
932 struct hammer_ioc_snapshot snapshot
;
933 struct hammer_ioc_snapshot dsnapshot
;
934 hammer_snapshot_data_t snap
;
941 bzero(&snapshot
, sizeof(snapshot
));
942 bzero(&dsnapshot
, sizeof(dsnapshot
));
944 if (ioctl(fd
, HAMMERIOC_GET_SNAPSHOT
, &snapshot
) < 0) {
945 err(2, "hammer cleanup: check_softlink "
949 for (i
= 0; i
< snapshot
.count
; ++i
) {
950 snap
= &snapshot
.snaps
[i
];
951 t
= snap
->ts
/ 1000000ULL;
953 if ((int)dt
> arg2
|| snap
->tid
== 0) {
954 dsnapshot
.snaps
[dsnapshot
.count
++] =
957 if ((int)dt
> arg2
&& VerboseOpt
) {
959 strftime(snapts
, sizeof(snapts
),
960 "%Y-%m-%d %H:%M:%S %Z", tp
);
961 printf(" expire 0x%016jx %s %s\n",
962 (uintmax_t)snap
->tid
,
966 if (dsnapshot
.count
== HAMMER_SNAPS_PER_IOCTL
)
967 delete_snapshots(fd
, &dsnapshot
);
969 } while (snapshot
.head
.error
== 0 && snapshot
.count
);
972 delete_snapshots(fd
, &dsnapshot
);
977 delete_snapshots(int fd
, struct hammer_ioc_snapshot
*dsnapshot
)
980 if (ioctl(fd
, HAMMERIOC_DEL_SNAPSHOT
, dsnapshot
) < 0) {
981 printf(" Ioctl to delete snapshots failed: %s\n",
985 if (dsnapshot
->head
.error
) {
986 printf(" Ioctl to delete snapshots failed at "
988 dsnapshot
->snaps
[dsnapshot
->index
].tid
,
989 strerror(dsnapshot
->head
.error
));
990 if (++dsnapshot
->index
< dsnapshot
->count
)
995 dsnapshot
->index
= 0;
996 dsnapshot
->count
= 0;
997 dsnapshot
->head
.error
= 0;
1001 * Take a softlink path in the form snap-yyyymmdd-hhmm and the
1002 * expiration in seconds (arg2) and return non-zero if the softlink
1006 check_expired(const char *fpath
, int arg2
)
1017 while (*fpath
&& *fpath
!= '-' && *fpath
!= '.')
1022 r
= sscanf(fpath
, "%4d%2d%2d-%2d%2d",
1023 &year
, &month
, &day
, &hour
, &minute
);
1026 bzero(&tm
, sizeof(tm
));
1031 tm
.tm_mon
= month
- 1;
1032 tm
.tm_year
= year
- 1900;
1034 if (t
== (time_t)-1)
1047 create_snapshot(const char *path
, const char *snapshots_path
)
1051 runcmd(&r
, "hammer snapshot %s %s", path
, snapshots_path
);
1056 cleanup_prune(const char *path
, const char *snapshots_path
,
1057 int arg1 __unused
, int arg2
, int snapshots_disabled
)
1059 const char *path_or_snapshots_path
;
1062 * If the snapshots_path (e.g. /var/hammer/...) has no snapshots
1063 * in it then prune will get confused and prune the filesystem
1064 * containing the snapshots_path instead of the requested
1065 * filesystem. De-confuse prune. We need a better way.
1067 if (hammer_softprune_testdir(snapshots_path
))
1068 path_or_snapshots_path
= snapshots_path
;
1070 path_or_snapshots_path
= path
;
1073 * If snapshots have been disabled run prune-everything instead
1076 if (snapshots_disabled
&& arg2
) {
1078 "hammer -c %s/.prune.cycle -t %d prune-everything %s",
1079 snapshots_path
, arg2
, path
);
1080 } else if (snapshots_disabled
) {
1081 runcmd(NULL
, "hammer prune-everything %s", path
);
1083 runcmd(NULL
, "hammer -c %s/.prune.cycle -t %d prune %s",
1084 snapshots_path
, arg2
, path_or_snapshots_path
);
1086 runcmd(NULL
, "hammer prune %s", path_or_snapshots_path
);
1092 cleanup_rebalance(const char *path
, const char *snapshots_path
,
1093 int arg1 __unused
, int arg2
)
1095 if (VerboseOpt
== 0) {
1101 "hammer -c %s/.rebalance.cycle -t %d rebalance %s",
1102 snapshots_path
, arg2
, path
);
1103 if (VerboseOpt
== 0) {
1107 if (VerboseOpt
== 0)
1113 cleanup_reblock(const char *path
, const char *snapshots_path
,
1114 int arg1 __unused
, int arg2
)
1116 if (VerboseOpt
== 0) {
1122 * When reblocking the B-Tree always reblock everything in normal
1126 "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s",
1127 snapshots_path
, arg2
, path
);
1128 if (VerboseOpt
== 0) {
1134 * When reblocking the inodes always reblock everything in normal
1138 "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s",
1139 snapshots_path
, arg2
, path
);
1140 if (VerboseOpt
== 0) {
1146 * When reblocking the directories always reblock everything in normal
1150 "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s",
1151 snapshots_path
, arg2
, path
);
1152 if (VerboseOpt
== 0) {
1158 * Do not reblock all the data in normal mode.
1161 "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95",
1162 snapshots_path
, arg2
, path
);
1163 if (VerboseOpt
== 0)
1169 cleanup_recopy(const char *path
, const char *snapshots_path
,
1170 int arg1 __unused
, int arg2
)
1172 if (VerboseOpt
== 0) {
1177 "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s",
1178 snapshots_path
, arg2
, path
);
1179 if (VerboseOpt
== 0) {
1184 "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s",
1185 snapshots_path
, arg2
, path
);
1186 if (VerboseOpt
== 0) {
1191 "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s",
1192 snapshots_path
, arg2
, path
);
1193 if (VerboseOpt
== 0) {
1198 "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s",
1199 snapshots_path
, arg2
, path
);
1200 if (VerboseOpt
== 0)
1206 cleanup_dedup(const char *path
, const char *snapshots_path __unused
,
1207 int arg1 __unused
, int arg2
)
1209 if (VerboseOpt
== 0) {
1214 runcmd(NULL
, "hammer -t %d dedup %s", arg2
, path
);
1215 if (VerboseOpt
== 0) {
1219 if (VerboseOpt
== 0)
1226 runcmd(int *resp
, const char *ctl
, ...)
1238 * Generate the command
1241 vasprintf(&cmd
, ctl
, va
);
1244 printf(" %s\n", cmd
);
1247 * Break us down into arguments. We do not just use system() here
1248 * because it blocks SIGINT and friends.
1252 av
= malloc(sizeof(char *) * nmax
);
1254 for (arg
= strtok(cmd
, WS
); arg
; arg
= strtok(NULL
, WS
)) {
1255 if (n
== nmax
- 1) {
1257 av
= realloc(av
, sizeof(char *) * nmax
);
1267 if ((pid
= fork()) == 0) {
1268 if (VerboseOpt
< 2) {
1269 int fd
= open("/dev/null", O_RDWR
);
1275 } else if (pid
< 0) {
1280 while (waitpid(pid
, &status
, 0) != pid
)
1282 res
= WEXITSTATUS(status
);