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[dragonfly.git] / sbin / hammer / hammer.c
blobe9c4cdba354172df1b0a4f8d9b9285e6227b2e66
1 /*
2 * Copyright (c) 2007 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
9 * are met:
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
16 * distribution.
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
32 * SUCH DAMAGE.
35 #include "hammer.h"
37 static void hammer_parsedevs(const char *blkdevs, int oflags);
38 static void hammer_parsedevs_noverify(const char *blkdevs, int oflags);
39 static void sigalrm(int signo);
40 static void sigintr(int signo);
41 static void usage(int exit_code);
43 int RecurseOpt;
44 int VerboseOpt;
45 int QuietOpt;
46 int NoSyncOpt;
47 int TwoWayPipeOpt;
48 int TimeoutOpt;
49 int DelayOpt = 5;
50 char *SshPort;
51 int ForceYesOpt;
52 int CompressOpt;
53 int ForceOpt;
54 int RunningIoctl;
55 int DidInterrupt;
56 int BulkOpt;
57 int AllPFS;
58 uint64_t BandwidthOpt;
59 uint64_t SplitupOpt = 4ULL * 1024ULL * 1024ULL * 1024ULL;
60 uint64_t MemoryLimit = 1024LLU * 1024 * 1024;
61 const char *SplitupOptStr;
62 const char *CyclePath;
64 int
65 main(int ac, char **av)
67 char *blkdevs = NULL;
68 char *ptr;
69 char *restrictcmd = NULL;
70 uint32_t status;
71 int ch;
73 while ((ch = getopt(ac, av,
74 "b:c:de:hf:i:m:p:qrt:v2yABC:FR:S:T:X")) != -1) {
75 switch(ch) {
76 case '2':
77 TwoWayPipeOpt = 1;
78 break;
79 case 'y':
80 ForceYesOpt = 1;
81 break;
82 case 'b':
83 BandwidthOpt = strtoull(optarg, &ptr, 0);
84 switch(*ptr) {
85 case 'g':
86 case 'G':
87 BandwidthOpt *= 1024;
88 /* fall through */
89 case 'm':
90 case 'M':
91 BandwidthOpt *= 1024;
92 /* fall through */
93 case 'k':
94 case 'K':
95 BandwidthOpt *= 1024;
96 break;
97 case '\0':
98 /* bytes per second if no suffix */
99 break;
100 default:
101 usage(1);
103 break;
104 case 'S':
105 SplitupOptStr = strdup(optarg);
106 SplitupOpt = strtoull(optarg, &ptr, 0);
107 switch(*ptr) {
108 case 'g':
109 case 'G':
110 SplitupOpt *= 1024;
111 /* fall through */
112 case 'm':
113 case 'M':
114 SplitupOpt *= 1024;
115 /* fall through */
116 case 'k':
117 case 'K':
118 SplitupOpt *= 1024;
119 break;
120 case '\0':
121 /* bytes per second if no suffix */
122 break;
123 default:
124 usage(1);
126 break;
127 case 'c':
128 CyclePath = optarg;
129 break;
130 case 'd':
131 ++DebugOpt;
132 break;
133 case 'e':
134 ScoreBoardFile = optarg;
135 break;
136 case 'h':
137 usage(0);
138 /* not reached */
139 case 'i':
140 DelayOpt = strtol(optarg, NULL, 0);
141 break;
142 case 'm':
143 MemoryLimit = strtouq(optarg, &ptr, 0);
144 switch(*ptr) {
145 case 't':
146 case 'T':
147 MemoryLimit *= 1024;
148 /* fall through */
149 case 'g':
150 case 'G':
151 MemoryLimit *= 1024;
152 /* fall through */
153 case 'm':
154 case 'M':
155 MemoryLimit *= 1024;
156 /* fall through */
157 case 'k':
158 case 'K':
159 MemoryLimit *= 1024;
160 /* fall through */
161 default:
162 break;
165 /* minimum limit */
166 if (MemoryLimit < 1024 * 1024)
167 MemoryLimit = 1024 * 1024;
168 break;
169 case 'p':
170 SshPort = optarg;
171 break;
172 case 'r':
173 RecurseOpt = 1;
174 break;
175 case 'f':
176 blkdevs = optarg;
177 break;
178 case 't':
179 TimeoutOpt = strtol(optarg, NULL, 0);
180 break;
181 case 'v':
182 if (QuietOpt > 0)
183 --QuietOpt;
184 else
185 ++VerboseOpt;
186 break;
187 case 'q':
188 if (VerboseOpt > 0)
189 --VerboseOpt;
190 else
191 ++QuietOpt;
192 break;
193 case 'A':
194 AllPFS = 1;
195 break;
196 case 'B':
197 BulkOpt = 1;
198 break;
199 case 'C':
200 if (hammer_parse_cache_size(optarg) == -1)
201 usage(1);
202 break;
203 case 'F':
204 ForceOpt = 1;
205 break;
206 case 'R':
207 if (restrictcmd == NULL)
208 restrictcmd = optarg;
209 break;
210 case 'T':
211 if (RestrictTarget == NULL)
212 RestrictTarget = optarg;
213 break;
214 case 'X':
215 CompressOpt = 1;
216 break;
217 default:
218 usage(1);
219 /* not reached */
222 ac -= optind;
223 av += optind;
224 if (ac < 1) {
225 usage(1);
226 /* not reached */
229 signal(SIGALRM, sigalrm);
230 signal(SIGINT, sigintr);
233 * Check command restriction (used by hammer ssh-remote). Several
234 * commands may be iterated with a comma.
236 if (restrictcmd) {
237 char *elm, *dup;
239 dup = ptr = strdup(restrictcmd);
240 while ((elm = strsep(&ptr, ",")) != NULL) {
241 if (strcmp(av[0], elm) == 0)
242 break;
244 if (elm == NULL)
245 errx(1, "hammer-remote: request does not match "
246 "restricted command");
247 free(dup);
251 * Lookup the filesystem type
253 uuid_name_lookup(&Hammer_FSType, HAMMER_FSTYPE_STRING, &status);
254 if (status != uuid_s_ok) {
255 errx(1, "uuids file does not have the DragonFly "
256 "HAMMER filesystem type");
260 * Parse commands
262 if (strcmp(av[0], "synctid") == 0) {
263 hammer_cmd_synctid(av + 1, ac - 1);
264 exit(0);
266 if (strcmp(av[0], "namekey2") == 0) {
267 int64_t key;
268 int32_t crcx;
269 int len;
270 const char *aname = av[1];
272 if (aname == NULL)
273 usage(1);
274 len = strlen(aname);
275 key = (uint32_t)crc32(aname, len) & 0xFFFFFFFEU;
277 switch(len) {
278 default:
279 crcx = crc32(aname + 3, len - 5);
280 crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
281 key |= (int64_t)(crcx & 0x3F) << 42;
282 /* fall through */
283 case 5:
284 case 4:
285 /* fall through */
286 case 3:
287 key |= ((int64_t)(aname[2] & 0x1F) << 48);
288 /* fall through */
289 case 2:
290 key |= ((int64_t)(aname[1] & 0x1F) << 53) |
291 ((int64_t)(aname[len-2] & 0x1F) << 37);
292 /* fall through */
293 case 1:
294 key |= ((int64_t)(aname[0] & 0x1F) << 58) |
295 ((int64_t)(aname[len-1] & 0x1F) << 32);
296 /* fall through */
297 case 0:
298 break;
300 if (key == 0)
301 key |= 0x100000000LL;
302 printf("0x%016jx\n", (uintmax_t)key);
303 exit(0);
305 if (strcmp(av[0], "namekey1") == 0) {
306 int64_t key;
308 if (av[1] == NULL)
309 usage(1);
310 key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
311 if (key == 0)
312 key |= 0x100000000LL;
313 printf("0x%016jx\n", (uintmax_t)key);
314 exit(0);
316 if (strcmp(av[0], "namekey32") == 0) {
317 int32_t key;
319 if (av[1] == NULL)
320 usage(1);
321 key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
322 if (key == 0)
323 ++key;
324 printf("0x%08x\n", key);
325 exit(0);
327 if (strcmp(av[0], "pfs-status") == 0) {
328 hammer_cmd_pseudofs_status(av + 1, ac - 1);
329 exit(0);
331 if (strcmp(av[0], "pfs-master") == 0) {
332 hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
333 exit(0);
335 if (strcmp(av[0], "pfs-slave") == 0) {
336 hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
337 exit(0);
339 if (strcmp(av[0], "pfs-update") == 0) {
340 hammer_cmd_pseudofs_update(av + 1, ac - 1);
341 exit(0);
343 if (strcmp(av[0], "pfs-upgrade") == 0) {
344 hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
345 exit(0);
347 if (strcmp(av[0], "pfs-downgrade") == 0) {
348 hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
349 exit(0);
351 if (strcmp(av[0], "pfs-destroy") == 0) {
352 hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
353 exit(0);
355 if (strcmp(av[0], "prune") == 0) {
356 hammer_cmd_softprune(av + 1, ac - 1, 0);
357 exit(0);
359 if (strcmp(av[0], "config") == 0) {
360 hammer_cmd_config(av + 1, ac - 1);
361 exit(0);
363 if (strcmp(av[0], "viconfig") == 0) {
364 hammer_cmd_viconfig(av + 1, ac - 1);
365 exit(0);
367 if (strcmp(av[0], "cleanup") == 0) {
368 hammer_cmd_cleanup(av + 1, ac - 1);
369 exit(0);
371 if (strcmp(av[0], "abort-cleanup") == 0) {
372 hammer_cmd_abort_cleanup(av + 1, ac - 1);
373 exit(0);
375 if (strcmp(av[0], "info") == 0) {
376 hammer_cmd_info(av + 1, ac - 1);
377 exit(0);
379 if (strcmp(av[0], "prune-everything") == 0) {
380 hammer_cmd_softprune(av + 1, ac - 1, 1);
381 exit(0);
383 if (strcmp(av[0], "ssh-remote") == 0) {
384 if (ac != 3)
385 usage(1);
386 hammer_cmd_sshremote(av[1], av[2]);
387 exit(0);
389 if (strcmp(av[0], "snap") == 0) {
390 hammer_cmd_snap(av + 1, ac - 1, 0, 1);
391 exit(0);
393 if (strcmp(av[0], "snaplo") == 0) {
394 hammer_cmd_snap(av + 1, ac - 1, 0, 0);
395 exit(0);
397 if (strcmp(av[0], "snapq") == 0) {
398 hammer_cmd_snap(av + 1, ac - 1, 1, 0);
399 exit(0);
401 if (strcmp(av[0], "snapls") == 0) {
402 hammer_cmd_snapls(av + 1, ac - 1);
403 exit(0);
405 if (strcmp(av[0], "snaprm") == 0) {
406 hammer_cmd_snaprm(av + 1, ac - 1);
407 exit(0);
409 if (strcmp(av[0], "snapshot") == 0) {
410 hammer_cmd_snapshot(av + 1, ac - 1);
411 exit(0);
413 if (strcmp(av[0], "bstats") == 0) {
414 hammer_cmd_bstats(av + 1, ac - 1);
415 exit(0);
417 if (strcmp(av[0], "iostats") == 0) {
418 hammer_cmd_iostats(av + 1, ac - 1);
419 exit(0);
421 if (strcmp(av[0], "stats") == 0) {
422 hammer_cmd_stats(av + 1, ac - 1);
423 exit(0);
426 if (strncmp(av[0], "history", 7) == 0) {
427 hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
428 exit(0);
430 if (strcmp(av[0], "rebalance") == 0) {
431 signal(SIGINT, sigalrm);
432 hammer_cmd_rebalance(av + 1, ac - 1);
433 exit(0);
435 if (strncmp(av[0], "reblock", 7) == 0) {
436 signal(SIGINT, sigalrm);
437 if (strcmp(av[0], "reblock") == 0)
438 hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_FLAGS);
439 else if (strcmp(av[0], "reblock-btree") == 0)
440 hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
441 else if (strcmp(av[0], "reblock-inodes") == 0)
442 hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
443 else if (strcmp(av[0], "reblock-dirs") == 0)
444 hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
445 else if (strcmp(av[0], "reblock-data") == 0)
446 hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
447 else
448 usage(1);
449 exit(0);
451 if (strncmp(av[0], "mirror", 6) == 0) {
452 if (strcmp(av[0], "mirror-read") == 0)
453 hammer_cmd_mirror_read(av + 1, ac - 1, 0);
454 else if (strcmp(av[0], "mirror-read-stream") == 0)
455 hammer_cmd_mirror_read(av + 1, ac - 1, 1);
456 else if (strcmp(av[0], "mirror-write") == 0)
457 hammer_cmd_mirror_write(av + 1, ac - 1);
458 else if (strcmp(av[0], "mirror-copy") == 0)
459 hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
460 else if (strcmp(av[0], "mirror-stream") == 0)
461 hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
462 else if (strcmp(av[0], "mirror-dump") == 0)
463 hammer_cmd_mirror_dump(av + 1, ac - 1);
464 else
465 usage(1);
466 exit(0);
468 if (strcmp(av[0], "dedup-simulate") == 0) {
469 hammer_cmd_dedup_simulate(av + 1, ac - 1);
470 exit(0);
472 if (strcmp(av[0], "dedup") == 0) {
473 hammer_cmd_dedup(av + 1, ac - 1);
474 exit(0);
476 if (strcmp(av[0], "version") == 0) {
477 hammer_cmd_get_version(av + 1, ac - 1);
478 exit(0);
480 if (strcmp(av[0], "version-upgrade") == 0) {
481 hammer_cmd_set_version(av + 1, ac - 1);
482 exit(0);
484 if (strcmp(av[0], "volume-add") == 0) {
485 hammer_cmd_volume_add(av + 1, ac - 1);
486 exit(0);
488 if (strcmp(av[0], "volume-del") == 0) {
489 hammer_cmd_volume_del(av + 1, ac - 1);
490 exit(0);
492 if (strcmp(av[0], "volume-list") == 0) {
493 hammer_cmd_volume_list(av + 1, ac - 1);
494 exit(0);
496 if (strcmp(av[0], "volume-blkdevs") == 0) {
497 hammer_cmd_volume_blkdevs(av + 1, ac - 1);
498 exit(0);
501 if (strcmp(av[0], "show") == 0) {
502 const char *arg = NULL;
503 char *p, *dup;
504 int filter = -1;
505 int obfuscate = 0;
506 int indent = 0;
508 hammer_parsedevs(blkdevs, O_RDONLY);
509 if (ac > 3)
510 errx(1, "Too many options specified");
511 if (ac > 1)
512 arg = av[1];
513 if (ac > 2) {
514 dup = ptr = strdup(av[2]);
515 while ((p = strsep(&ptr, ",")) != NULL) {
516 if (strcmp(p, "filter") == 0) {
517 filter = 1;
518 } else if (strcmp(p, "nofilter") == 0) {
519 filter = 0;
520 } else if (strcmp(p, "obfuscate") == 0) {
521 obfuscate = 1;
522 } else if (strcmp(p, "indent") == 0) {
523 indent = 1;
526 free(dup);
528 hammer_cmd_show(arg, filter, obfuscate, indent);
529 exit(0);
531 if (strcmp(av[0], "show-undo") == 0) {
532 hammer_parsedevs(blkdevs, O_RDONLY);
533 hammer_cmd_show_undo();
534 exit(0);
536 if (strcmp(av[0], "recover") == 0) {
537 hammer_parsedevs_noverify(blkdevs, O_RDONLY);
538 hammer_cmd_recover(av + 1, ac - 1);
539 exit(0);
541 if (strcmp(av[0], "blockmap") == 0) {
542 hammer_parsedevs(blkdevs, O_RDONLY);
543 hammer_cmd_blockmap();
544 exit(0);
546 if (strcmp(av[0], "checkmap") == 0) {
547 hammer_parsedevs(blkdevs, O_RDONLY);
548 hammer_cmd_checkmap();
549 exit(0);
551 if (strcmp(av[0], "strip") == 0) {
552 hammer_parsedevs(blkdevs, O_RDWR);
553 hammer_cmd_strip();
554 exit(0);
557 usage(1);
558 /* not reached */
559 return(0);
563 * Parse the device specification.
565 * Multi-volume hammer devices are colon-separated. Each element
566 * may be further expanded via /etc/devtab. One may also specify
567 * a single element which is expanded into multiple elements via
568 * /etc/devtab.
570 static
571 void
572 __hammer_parsedevs(const char *blkdevs, int oflags, int verify)
574 struct volume_info *volume = NULL;
575 char *copy;
576 char *volname;
577 int volnum = 0;
579 if (blkdevs == NULL) {
580 errx(1, "A -f blkdevs specification is required "
581 "for this command");
584 copy = strdup(blkdevs);
585 while ((volname = copy) != NULL) {
586 if ((copy = strchr(copy, ':')) != NULL)
587 *copy++ = 0;
588 volname = getdevpath(volname, 0);
589 if (strchr(volname, ':')) {
590 __hammer_parsedevs(volname, oflags, verify);
591 } else {
592 volume = load_volume(volname, oflags, verify);
593 assert(volume);
594 ++volnum;
596 free(volname);
598 free(copy);
601 * All volumes have the same vol_count.
603 assert(volume);
604 if (volnum != volume->ondisk->vol_count)
605 errx(1, "Volume header says %d volumes, but %d specified.",
606 volume->ondisk->vol_count, volnum);
608 if (get_root_volume() == NULL)
609 errx(1, "No root volume found");
612 static __inline
613 void
614 hammer_parsedevs(const char *blkdevs, int oflags)
616 __hammer_parsedevs(blkdevs, oflags, 1);
619 static __inline
620 void
621 hammer_parsedevs_noverify(const char *blkdevs, int oflags)
623 __hammer_parsedevs(blkdevs, oflags, 0);
626 static
627 void
628 sigalrm(int signo __unused)
630 /* do nothing (interrupts HAMMER ioctl) */
633 static
634 void
635 sigintr(int signo __unused)
637 if (RunningIoctl == 0)
638 _exit(1);
639 DidInterrupt = 1;
640 /* do nothing (interrupts HAMMER ioctl) */
643 static
644 void
645 usage(int exit_code)
647 fprintf(stderr,
648 "hammer -h\n"
649 "hammer [-2ABFqrvXy] [-b bandwidth] [-C cachesize[:readahead]] \n"
650 " [-R restrictcmd] [-T restrictpath] [-c cyclefile]\n"
651 " [-e scoreboardfile] [-f blkdevs] [-i delay] [-p ssh-port]\n"
652 " [-S splitsize] [-t seconds] [-m memlimit] command [argument ...]\n"
653 "hammer synctid <filesystem> [quick]\n"
654 "hammer bstats [interval]\n"
655 "hammer iostats [interval]\n"
656 "hammer stats [interval]\n"
657 "hammer history[@offset[,len]] <file> ...\n"
658 "hammer namekey1 <path>\n"
659 "hammer namekey2 <path>\n"
660 "hammer namekey32 <path>\n"
661 "hammer cleanup [<filesystem> ...]\n"
662 "hammer abort-cleanup\n"
663 "hammer info [<dirpath> ...]\n"
664 "hammer snapshot [<filesystem>] <snapshot-dir>\n"
665 "hammer snapshot <filesystem> <snapshot-dir> [<note>]\n"
666 "hammer prune <softlink-dir>\n"
667 "hammer prune-everything <filesystem>\n"
668 "hammer rebalance <filesystem> [saturation_percentage]\n"
669 "hammer reblock[-btree|-inodes|-dirs|-data] "
670 "<filesystem> [fill_percentage]\n"
671 "hammer pfs-status <dirpath> ...\n"
672 "hammer pfs-master <dirpath> [options]\n"
673 "hammer pfs-slave <dirpath> [options]\n"
674 "hammer pfs-update <dirpath> [options]\n"
675 "hammer pfs-upgrade <dirpath>\n"
676 "hammer pfs-downgrade <dirpath>\n"
677 "hammer pfs-destroy <dirpath>\n"
678 "hammer mirror-read <filesystem> [begin-tid]\n"
679 "hammer mirror-read-stream <filesystem> [begin-tid]\n"
680 "hammer mirror-write <filesystem>\n"
681 "hammer mirror-dump [header]\n"
682 "hammer mirror-copy [[user@]host:]<filesystem>"
683 " [[user@]host:]<filesystem>\n"
684 "hammer mirror-stream [[user@]host:]<filesystem>"
685 " [[user@]host:]<filesystem>\n"
686 "hammer ssh-remote command filesystem\n"
687 "hammer version <filesystem>\n"
688 "hammer version-upgrade <filesystem> <version> [force]\n"
689 "hammer volume-add <device> <filesystem>\n"
690 "hammer volume-del <device> <filesystem>\n"
691 "hammer volume-list <filesystem>\n"
692 "hammer volume-blkdevs <filesystem>\n"
695 fprintf(stderr, "\nHAMMER utility version 3+ commands:\n");
697 fprintf(stderr,
698 "hammer config [<filesystem> [<configfile>]]\n"
699 "hammer viconfig [<filesystem>]\n"
700 "hammer snap <path> [<note>]\n"
701 "hammer snaplo <path> [<note>]\n"
702 "hammer snapq <dir> [<note>]\n"
703 "hammer snaprm <path> ...\n"
704 "hammer snaprm <transid> ...\n"
705 "hammer snaprm <filesystem> <transid> ...\n"
706 "hammer snapls [<path> ...]\n"
709 fprintf(stderr, "\nHAMMER utility version 4+ commands:\n");
711 fprintf(stderr,
712 "hammer -f blkdevs blockmap\n"
713 "hammer -f blkdevs checkmap\n"
714 "hammer -f blkdevs [-qqq] show [lo:objid]\n"
715 "hammer -f blkdevs show-undo\n"
716 "hammer -f blkdevs recover <target_dir> [full|quick]\n"
717 "hammer -f blkdevs strip\n"
720 fprintf(stderr, "\nHAMMER utility version 5+ commands:\n");
722 fprintf(stderr,
723 "hammer dedup-simulate <filesystem>\n"
724 "hammer dedup <filesystem>\n"
727 exit(exit_code);