xref: /dragonfly/sbin/hammer/hammer.c (revision fb594d7a)
1 /*
2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
3  *
4  * This code is derived from software contributed to The DragonFly Project
5  * by Matthew Dillon <dillon@backplane.com>
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
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.
20  *
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.
33  */
34 
35 #include "hammer.h"
36 
37 #include <fstab.h>
38 
39 static void hammer_parse_blkdevs(const char *blkdevs, int oflags);
40 static void __hammer_parse_blkdevs(const char *blkdevs, int oflags,
41 		int verify_volume, int verify_count);
42 static void sigalrm(int signo);
43 static void sigintr(int signo);
44 static void usage(int exit_code) __dead2;
45 
46 int RecurseOpt;
47 int VerboseOpt;
48 int QuietOpt;
49 int NoSyncOpt;
50 int TwoWayPipeOpt;
51 int TimeoutOpt;
52 int DelayOpt = 5;
53 char *SshPort;
54 int ForceYesOpt;
55 int CompressOpt;
56 int ForceOpt;
57 int RunningIoctl;
58 int DidInterrupt;
59 int BulkOpt;
60 int AllPFS;
61 uint64_t BandwidthOpt;
62 uint64_t SplitupOpt = 4ULL * 1024ULL * 1024ULL * 1024ULL;
63 uint64_t MemoryLimit = 1024LLU * 1024 * 1024;
64 const char *SplitupOptStr;
65 const char *CyclePath;
66 
67 int
68 main(int ac, char **av)
69 {
70 	char *blkdevs = NULL;
71 	char *ptr;
72 	char *restrictcmd = NULL;
73 	int ch;
74 
75 	while ((ch = getopt(ac, av,
76 			    "b:c:de:hf:i:m:p:qrt:v2yABC:FR:S:T:X")) != -1) {
77 		switch(ch) {
78 		case '2':
79 			TwoWayPipeOpt = 1;
80 			break;
81 		case 'y':
82 			ForceYesOpt = 1;
83 			break;
84 		case 'b':
85 			BandwidthOpt = strtoull(optarg, &ptr, 0);
86 			switch(*ptr) {
87 			case 'g':
88 			case 'G':
89 				BandwidthOpt *= 1024;
90 				/* fall through */
91 			case 'm':
92 			case 'M':
93 				BandwidthOpt *= 1024;
94 				/* fall through */
95 			case 'k':
96 			case 'K':
97 				BandwidthOpt *= 1024;
98 				break;
99 			case '\0':
100 				/* bytes per second if no suffix */
101 				break;
102 			default:
103 				usage(1);
104 				/* not reached */
105 			}
106 			break;
107 		case 'S':
108 			SplitupOptStr = strdup(optarg);
109 			SplitupOpt = strtoull(optarg, &ptr, 0);
110 			switch(*ptr) {
111 			case 'g':
112 			case 'G':
113 				SplitupOpt *= 1024;
114 				/* fall through */
115 			case 'm':
116 			case 'M':
117 				SplitupOpt *= 1024;
118 				/* fall through */
119 			case 'k':
120 			case 'K':
121 				SplitupOpt *= 1024;
122 				break;
123 			case '\0':
124 				/* bytes per second if no suffix */
125 				break;
126 			default:
127 				usage(1);
128 				/* not reached */
129 			}
130 			break;
131 		case 'c':
132 			CyclePath = optarg;
133 			break;
134 		case 'd':
135 			++DebugOpt;
136 			break;
137 		case 'e':
138 			ScoreBoardFile = optarg;
139 			break;
140 		case 'h':
141 			usage(0);
142 			/* not reached */
143 		case 'i':
144 			DelayOpt = strtol(optarg, NULL, 0);
145 			break;
146 		case 'm':
147 			MemoryLimit = strtouq(optarg, &ptr, 0);
148 			switch(*ptr) {
149 			case 't':
150 			case 'T':
151 				MemoryLimit *= 1024;
152 				/* fall through */
153 			case 'g':
154 			case 'G':
155 				MemoryLimit *= 1024;
156 				/* fall through */
157 			case 'm':
158 			case 'M':
159 				MemoryLimit *= 1024;
160 				/* fall through */
161 			case 'k':
162 			case 'K':
163 				MemoryLimit *= 1024;
164 				/* fall through */
165 			default:
166 				break;
167 			}
168 
169 			/* minimum limit */
170 			if (MemoryLimit < 1024 * 1024)
171 				MemoryLimit = 1024 * 1024;
172 			break;
173 		case 'p':
174 			SshPort = optarg;
175 			break;
176 		case 'r':
177 			RecurseOpt = 1;
178 			break;
179 		case 'f':
180 			blkdevs = optarg;
181 			break;
182 		case 't':
183 			TimeoutOpt = strtol(optarg, NULL, 0);
184 			break;
185 		case 'v':
186 			if (QuietOpt > 0)
187 				--QuietOpt;
188 			else
189 				++VerboseOpt;
190 			break;
191 		case 'q':
192 			if (VerboseOpt > 0)
193 				--VerboseOpt;
194 			else
195 				++QuietOpt;
196 			break;
197 		case 'A':
198 			AllPFS = 1;
199 			break;
200 		case 'B':
201 			BulkOpt = 1;
202 			break;
203 		case 'C':
204 			if (hammer_parse_cache_size(optarg) == -1) {
205 				usage(1);
206 				/* not reached */
207 			}
208 			break;
209 		case 'F':
210 			ForceOpt = 1;
211 			break;
212 		case 'R':
213 			if (restrictcmd == NULL)
214 				restrictcmd = optarg;
215 			break;
216 		case 'T':
217 			if (RestrictTarget == NULL)
218 				RestrictTarget = optarg;
219 			break;
220 		case 'X':
221 			CompressOpt = 1;
222 			break;
223 		default:
224 			usage(1);
225 			/* not reached */
226 		}
227 	}
228 	ac -= optind;
229 	av += optind;
230 	if (ac < 1) {
231 		usage(1);
232 		/* not reached */
233 	}
234 
235 	signal(SIGALRM, sigalrm);
236 	signal(SIGINT, sigintr);
237 
238 	/*
239 	 * Check command restriction (used by hammer ssh-remote).  Several
240 	 * commands may be iterated with a comma.
241 	 */
242 	if (restrictcmd) {
243 		char *elm, *dup;
244 
245 		dup = ptr = strdup(restrictcmd);
246 		while ((elm = strsep(&ptr, ",")) != NULL) {
247 			if (strcmp(av[0], elm) == 0)
248 				break;
249 		}
250 		if (elm == NULL) {
251 			errx(1, "hammer-remote: request does not match "
252 				"restricted command");
253 			/* not reached */
254 		}
255 		free(dup);
256 	}
257 
258 	/*
259 	 * Lookup the filesystem type
260 	 */
261 	if (hammer_uuid_name_lookup(&Hammer_FSType, HAMMER_FSTYPE_STRING)) {
262 		errx(1, "uuids file does not have the DragonFly "
263 			"HAMMER filesystem type");
264 		/* not reached */
265 	}
266 
267 	/*
268 	 * Parse commands
269 	 */
270 	if (strcmp(av[0], "synctid") == 0) {
271 		hammer_cmd_synctid(av + 1, ac - 1);
272 		exit(0);
273 	}
274 	if (strcmp(av[0], "namekey2") == 0) {
275 		int64_t key;
276 		int32_t crcx;
277 		int len;
278 		const char *aname = av[1];
279 
280 		if (aname == NULL) {
281 			usage(1);
282 			/* not reached */
283 		}
284 		len = strlen(aname);
285 		key = (uint32_t)crc32(aname, len) & 0xFFFFFFFEU;
286 
287 		switch(len) {
288 		default:
289 			crcx = crc32(aname + 3, len - 5);
290 			crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
291 			key |= (int64_t)(crcx & 0x3F) << 42;
292 			/* fall through */
293 		case 5:
294 		case 4:
295 			/* fall through */
296 		case 3:
297 			key |= ((int64_t)(aname[2] & 0x1F) << 48);
298 			/* fall through */
299 		case 2:
300 			key |= ((int64_t)(aname[1] & 0x1F) << 53) |
301 			       ((int64_t)(aname[len-2] & 0x1F) << 37);
302 			/* fall through */
303 		case 1:
304 			key |= ((int64_t)(aname[0] & 0x1F) << 58) |
305 			       ((int64_t)(aname[len-1] & 0x1F) << 32);
306 			/* fall through */
307 		case 0:
308 			break;
309 		}
310 		if (key == 0)
311 			key |= 0x100000000LL;
312 		printf("0x%016jx\n", (uintmax_t)key);
313 		exit(0);
314 	}
315 	if (strcmp(av[0], "namekey1") == 0) {
316 		int64_t key;
317 
318 		if (av[1] == NULL) {
319 			usage(1);
320 			/* not reached */
321 		}
322 		key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
323 		if (key == 0)
324 			key |= 0x100000000LL;
325 		printf("0x%016jx\n", (uintmax_t)key);
326 		exit(0);
327 	}
328 	if (strcmp(av[0], "namekey32") == 0) {
329 		int32_t key;
330 
331 		if (av[1] == NULL) {
332 			usage(1);
333 			/* not reached */
334 		}
335 		key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
336 		if (key == 0)
337 			++key;
338 		printf("0x%08x\n", key);
339 		exit(0);
340 	}
341 	if (strcmp(av[0], "pfs-status") == 0) {
342 		hammer_cmd_pseudofs_status(av + 1, ac - 1);
343 		exit(0);
344 	}
345 	if (strcmp(av[0], "pfs-master") == 0) {
346 		hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
347 		exit(0);
348 	}
349 	if (strcmp(av[0], "pfs-slave") == 0) {
350 		hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
351 		exit(0);
352 	}
353 	if (strcmp(av[0], "pfs-update") == 0) {
354 		hammer_cmd_pseudofs_update(av + 1, ac - 1);
355 		exit(0);
356 	}
357 	if (strcmp(av[0], "pfs-upgrade") == 0) {
358 		hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
359 		exit(0);
360 	}
361 	if (strcmp(av[0], "pfs-downgrade") == 0) {
362 		hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
363 		exit(0);
364 	}
365 	if (strcmp(av[0], "pfs-destroy") == 0) {
366 		hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
367 		exit(0);
368 	}
369 	if (strcmp(av[0], "prune") == 0) {
370 		hammer_cmd_softprune(av + 1, ac - 1, 0);
371 		exit(0);
372 	}
373 	if (strcmp(av[0], "prune-everything") == 0) {
374 		hammer_cmd_softprune(av + 1, ac - 1, 1);
375 		exit(0);
376 	}
377 	if (strcmp(av[0], "config") == 0) {
378 		hammer_cmd_config(av + 1, ac - 1);
379 		exit(0);
380 	}
381 	if (strcmp(av[0], "viconfig") == 0) {
382 		hammer_cmd_viconfig(av + 1, ac - 1);
383 		exit(0);
384 	}
385 	if (strcmp(av[0], "cleanup") == 0) {
386 		hammer_cmd_cleanup(av + 1, ac - 1);
387 		exit(0);
388 	}
389 	if (strcmp(av[0], "abort-cleanup") == 0) {
390 		hammer_cmd_abort_cleanup(av + 1, ac - 1);
391 		exit(0);
392 	}
393 	if (strcmp(av[0], "info") == 0) {
394 		hammer_cmd_info(av + 1, ac - 1);
395 		exit(0);
396 	}
397 	if (strcmp(av[0], "ssh-remote") == 0) {
398 		if (ac != 3) {
399 			usage(1);
400 			/* not reached */
401 		}
402 		hammer_cmd_sshremote(av[1], av[2]);
403 		exit(0);
404 	}
405 	if (strcmp(av[0], "snap") == 0) {
406 		hammer_cmd_snap(av + 1, ac - 1, 0, 1);
407 		exit(0);
408 	}
409 	if (strcmp(av[0], "snaplo") == 0) {
410 		hammer_cmd_snap(av + 1, ac - 1, 0, 0);
411 		exit(0);
412 	}
413 	if (strcmp(av[0], "snapq") == 0) {
414 		hammer_cmd_snap(av + 1, ac - 1, 1, 0);
415 		exit(0);
416 	}
417 	if (strcmp(av[0], "snapls") == 0) {
418 		hammer_cmd_snapls(av + 1, ac - 1);
419 		exit(0);
420 	}
421 	if (strcmp(av[0], "snaprm") == 0) {
422 		hammer_cmd_snaprm(av + 1, ac - 1);
423 		exit(0);
424 	}
425 	if (strcmp(av[0], "snapshot") == 0) {
426 		hammer_cmd_snapshot(av + 1, ac - 1);
427 		exit(0);
428 	}
429 	if (strcmp(av[0], "bstats") == 0) {
430 		hammer_cmd_bstats(av + 1, ac - 1);
431 		exit(0);
432 	}
433 	if (strcmp(av[0], "iostats") == 0) {
434 		hammer_cmd_iostats(av + 1, ac - 1);
435 		exit(0);
436 	}
437 	if (strcmp(av[0], "stats") == 0) {
438 		hammer_cmd_stats(av + 1, ac - 1);
439 		exit(0);
440 	}
441 
442 	if (strncmp(av[0], "history", 7) == 0) {
443 		hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
444 		exit(0);
445 	}
446 	if (strcmp(av[0], "rebalance") == 0) {
447 		signal(SIGINT, sigalrm);
448 		hammer_cmd_rebalance(av + 1, ac - 1);
449 		exit(0);
450 	}
451 	if (strncmp(av[0], "reblock", 7) == 0) {
452 		signal(SIGINT, sigalrm);
453 		if (strcmp(av[0], "reblock") == 0)
454 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_FLAGS);
455 		else if (strcmp(av[0], "reblock-btree") == 0)
456 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
457 		else if (strcmp(av[0], "reblock-inodes") == 0)
458 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
459 		else if (strcmp(av[0], "reblock-dirs") == 0)
460 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
461 		else if (strcmp(av[0], "reblock-data") == 0)
462 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
463 		else {
464 			usage(1);
465 			/* not reached */
466 		}
467 		exit(0);
468 	}
469 	if (strncmp(av[0], "mirror", 6) == 0) {
470 		if (strcmp(av[0], "mirror-read") == 0)
471 			hammer_cmd_mirror_read(av + 1, ac - 1, 0);
472 		else if (strcmp(av[0], "mirror-read-stream") == 0)
473 			hammer_cmd_mirror_read(av + 1, ac - 1, 1);
474 		else if (strcmp(av[0], "mirror-write") == 0)
475 			hammer_cmd_mirror_write(av + 1, ac - 1);
476 		else if (strcmp(av[0], "mirror-copy") == 0)
477 			hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
478 		else if (strcmp(av[0], "mirror-stream") == 0)
479 			hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
480 		else if (strcmp(av[0], "mirror-dump") == 0)
481 			hammer_cmd_mirror_dump(av + 1, ac - 1);
482 		else {
483 			usage(1);
484 			/* not reached */
485 		}
486 		exit(0);
487 	}
488 	if (strcmp(av[0], "dedup-simulate") == 0) {
489 		hammer_cmd_dedup_simulate(av + 1, ac - 1);
490 		exit(0);
491 	}
492 	if (strcmp(av[0], "dedup") == 0) {
493 		hammer_cmd_dedup(av + 1, ac - 1);
494 		exit(0);
495 	}
496 	if (strcmp(av[0], "version") == 0) {
497 		hammer_cmd_get_version(av + 1, ac - 1);
498 		exit(0);
499 	}
500 	if (strcmp(av[0], "version-upgrade") == 0) {
501 		hammer_cmd_set_version(av + 1, ac - 1);
502 		exit(0);
503 	}
504 	if (strcmp(av[0], "volume-add") == 0) {
505 		hammer_cmd_volume_add(av + 1, ac - 1);
506 		exit(0);
507 	}
508 	if (strcmp(av[0], "volume-del") == 0) {
509 		hammer_cmd_volume_del(av + 1, ac - 1);
510 		exit(0);
511 	}
512 	if (strcmp(av[0], "volume-list") == 0) {
513 		hammer_cmd_volume_list(av + 1, ac - 1);
514 		exit(0);
515 	}
516 	if (strcmp(av[0], "volume-blkdevs") == 0) {
517 		hammer_cmd_volume_blkdevs(av + 1, ac - 1);
518 		exit(0);
519 	}
520 
521 	if (strcmp(av[0], "show") == 0) {
522 		const char *arg = NULL;
523 		char *p, *dup;
524 		int filter = -1;
525 		int obfuscate = 0;
526 		int indent = 0;
527 
528 		hammer_parse_blkdevs(blkdevs, O_RDONLY);
529 		if (ac > 3) {
530 			errx(1, "Too many options specified");
531 			/* not reached */
532 		}
533 		if (ac > 1)
534 			arg = av[1];
535 		if (ac > 2) {
536 			dup = ptr = strdup(av[2]);
537 			while ((p = strsep(&ptr, ",")) != NULL) {
538 				if (strcmp(p, "filter") == 0)
539 					filter = 1;
540 				else if (strcmp(p, "nofilter") == 0)
541 					filter = 0;
542 				else if (strcmp(p, "obfuscate") == 0)
543 					obfuscate = 1;
544 				else if (strcmp(p, "indent") == 0)
545 					indent = 1;
546 			}
547 			free(dup);
548 		}
549 		hammer_cmd_show(arg, filter, obfuscate, indent);
550 		exit(0);
551 	}
552 	if (strcmp(av[0], "show-undo") == 0) {
553 		hammer_parse_blkdevs(blkdevs, O_RDONLY);
554 		hammer_cmd_show_undo();
555 		exit(0);
556 	}
557 	if (strcmp(av[0], "recover") == 0) {
558 		__hammer_parse_blkdevs(blkdevs, O_RDONLY, 0, 1);
559 		hammer_cmd_recover(av + 1, ac - 1);
560 		exit(0);
561 	}
562 	if (strcmp(av[0], "blockmap") == 0) {
563 		hammer_parse_blkdevs(blkdevs, O_RDONLY);
564 		hammer_cmd_blockmap();
565 		exit(0);
566 	}
567 	if (strcmp(av[0], "checkmap") == 0) {
568 		hammer_parse_blkdevs(blkdevs, O_RDONLY);
569 		hammer_cmd_checkmap();
570 		exit(0);
571 	}
572 	if (strcmp(av[0], "strip") == 0) {
573 		__hammer_parse_blkdevs(blkdevs, O_RDWR, 0, 0);
574 		hammer_cmd_strip();
575 		exit(0);
576 	}
577 
578 	usage(1);
579 	/* not reached */
580 	return(0);
581 }
582 
583 /*
584  * Parse the device specification.
585  *
586  * Multi-volume hammer devices are colon-separated.  Each element
587  * may be further expanded via /etc/devtab.  One may also specify
588  * a single element which is expanded into multiple elements via
589  * /etc/devtab.
590  */
591 static
592 void
593 __hammer_parse_blkdevs(const char *blkdevs, int oflags, int verify_volume,
594 	int verify_count)
595 {
596 	volume_info_t volume = NULL;
597 	char *copy;
598 	char *volname;
599 	int vol_count = 0;
600 
601 	if (blkdevs == NULL) {
602 		errx(1, "A -f blkdevs specification is required "
603 			"for this command");
604 		/* not reached */
605 	}
606 
607 	copy = strdup(blkdevs);
608 	while ((volname = copy) != NULL) {
609 		if ((copy = strchr(copy, ':')) != NULL)
610 			*copy++ = 0;
611 		volname = getdevpath(volname, 0);
612 		if (strchr(volname, ':')) {
613 			__hammer_parse_blkdevs(volname, oflags, verify_volume,
614 				verify_count);
615 		} else {
616 			volume = load_volume(volname, oflags, verify_volume);
617 			assert(volume);
618 			++vol_count;
619 		}
620 		free(volname);
621 	}
622 	free(copy);
623 
624 	assert(volume);
625 	if (verify_count) {
626 		if (vol_count != volume->ondisk->vol_count) {
627 			errx(1, "Volume header says %d volumes, but %d specified.",
628 				volume->ondisk->vol_count, vol_count);
629 			/* not reached */
630 		}
631 		if (get_root_volume() == NULL) {
632 			errx(1, "No root volume found");
633 			/* not reached */
634 		}
635 	}
636 }
637 
638 static __inline
639 void
640 hammer_parse_blkdevs(const char *blkdevs, int oflags)
641 {
642 	__hammer_parse_blkdevs(blkdevs, oflags, 1, 1);
643 }
644 
645 static
646 void
647 sigalrm(int signo __unused)
648 {
649 	/* do nothing (interrupts HAMMER ioctl) */
650 }
651 
652 static
653 void
654 sigintr(int signo __unused)
655 {
656 	if (RunningIoctl == 0)
657 		_exit(1);
658 	DidInterrupt = 1;
659 	/* do nothing (interrupts HAMMER ioctl) */
660 }
661 
662 static
663 void
664 usage(int exit_code)
665 {
666 	fprintf(stderr,
667 		"hammer -h\n"
668 		"hammer [-2ABFqrvXy] [-b bandwidth] [-C cachesize[:readahead]] \n"
669 		"       [-R restrictcmd] [-T restrictpath] [-c cyclefile]\n"
670 		"       [-e scoreboardfile] [-f blkdevs] [-i delay] [-p ssh-port]\n"
671 		"       [-S splitsize] [-t seconds] [-m memlimit] command [argument ...]\n"
672 		"hammer synctid <filesystem> [quick]\n"
673 		"hammer bstats [interval]\n"
674 		"hammer iostats [interval]\n"
675 		"hammer stats [interval]\n"
676 		"hammer history[@offset[,len]] <file> ...\n"
677 		"hammer namekey1 <path>\n"
678 		"hammer namekey2 <path>\n"
679 		"hammer namekey32 <path>\n"
680 		"hammer cleanup [<filesystem> ...]\n"
681 		"hammer abort-cleanup\n"
682 		"hammer info [<dirpath> ...]\n"
683 		"hammer snapshot [<filesystem>] <snapshot-dir>\n"
684 		"hammer snapshot <filesystem> <snapshot-dir> [<note>]\n"
685 		"hammer prune <softlink-dir>\n"
686 		"hammer prune-everything <filesystem>\n"
687 		"hammer rebalance <filesystem> [saturation_percentage]\n"
688 		"hammer reblock[-btree|-inodes|-dirs|-data] "
689 			"<filesystem> [fill_percentage]\n"
690 		"hammer pfs-status <dirpath> ...\n"
691 		"hammer pfs-master <dirpath> [options]\n"
692 		"hammer pfs-slave <dirpath> [options]\n"
693 		"hammer pfs-update <dirpath> [options]\n"
694 		"hammer pfs-upgrade <dirpath>\n"
695 		"hammer pfs-downgrade <dirpath>\n"
696 		"hammer pfs-destroy <dirpath>\n"
697 		"hammer mirror-read <filesystem> [begin-tid]\n"
698 		"hammer mirror-read-stream <filesystem> [begin-tid]\n"
699 		"hammer mirror-write <filesystem>\n"
700 		"hammer mirror-dump [header]\n"
701 		"hammer mirror-copy [[user@]host:]<filesystem>"
702 				  " [[user@]host:]<filesystem>\n"
703 		"hammer mirror-stream [[user@]host:]<filesystem>"
704 				    " [[user@]host:]<filesystem>\n"
705 		"hammer ssh-remote command filesystem\n"
706 		"hammer version <filesystem>\n"
707 		"hammer version-upgrade <filesystem> <version> [force]\n"
708 		"hammer volume-add <device> <filesystem>\n"
709 		"hammer volume-del <device> <filesystem>\n"
710 		"hammer volume-list <filesystem>\n"
711 		"hammer volume-blkdevs <filesystem>\n"
712 	);
713 
714 	fprintf(stderr, "\nHAMMER utility version 3+ commands:\n");
715 
716 	fprintf(stderr,
717 		"hammer config [<filesystem> [<configfile>]]\n"
718 		"hammer viconfig [<filesystem>]\n"
719 		"hammer snap <path> [<note>]\n"
720 		"hammer snaplo <path> [<note>]\n"
721 		"hammer snapq <dir> [<note>]\n"
722 		"hammer snaprm <path> ...\n"
723 		"hammer snaprm <transid> ...\n"
724 		"hammer snaprm <filesystem> <transid> ...\n"
725 		"hammer snapls [<path> ...]\n"
726 	);
727 
728 	fprintf(stderr, "\nHAMMER utility version 4+ commands:\n");
729 
730 	fprintf(stderr,
731 		"hammer -f blkdevs blockmap\n"
732 		"hammer -f blkdevs checkmap\n"
733 		"hammer -f blkdevs [-qqq] show [lo:objid]\n"
734 		"hammer -f blkdevs show-undo\n"
735 		"hammer -f blkdevs recover <target_dir> [full|quick]\n"
736 		"hammer -f blkdevs strip\n"
737 	);
738 
739 	fprintf(stderr, "\nHAMMER utility version 5+ commands:\n");
740 
741 	fprintf(stderr,
742 		"hammer dedup-simulate <filesystem>\n"
743 		"hammer dedup <filesystem>\n"
744 	);
745 
746 	exit(exit_code);
747 }
748 
749