xref: /dragonfly/sbin/hammer/hammer.c (revision d50f9ae3)
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 __inline 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 TwoWayPipeOpt;
50 int TimeoutOpt;
51 int DelayOpt = 5;
52 char *SshPort;
53 int ForceYesOpt;
54 int CompressOpt;
55 int ForceOpt;
56 int RunningIoctl;
57 int DidInterrupt;
58 int BulkOpt;
59 int AllPFS;
60 uint64_t BandwidthOpt;
61 uint64_t SplitupOpt = 4ULL * 1024ULL * 1024ULL * 1024ULL;
62 uint64_t MemoryLimit = 1024LLU * 1024 * 1024;
63 const char *SplitupOptStr;
64 const char *CyclePath;
65 
66 int
main(int ac,char ** av)67 main(int ac, char **av)
68 {
69 	char *blkdevs = NULL;
70 	char *ptr;
71 	char *restrictcmd = NULL;
72 	int ch;
73 
74 	while ((ch = getopt(ac, av,
75 			    "b:c:de:hf:i:m:p:qrt:v2yABC:FR:S:T:X")) != -1) {
76 		switch(ch) {
77 		case '2':
78 			TwoWayPipeOpt = 1;
79 			break;
80 		case 'y':
81 			ForceYesOpt = 1;
82 			break;
83 		case 'b':
84 			BandwidthOpt = strtoull(optarg, &ptr, 0);
85 			switch(*ptr) {
86 			case 'g':
87 			case 'G':
88 				BandwidthOpt *= 1024;
89 				/* fall through */
90 			case 'm':
91 			case 'M':
92 				BandwidthOpt *= 1024;
93 				/* fall through */
94 			case 'k':
95 			case 'K':
96 				BandwidthOpt *= 1024;
97 				break;
98 			case '\0':
99 				/* bytes per second if no suffix */
100 				break;
101 			default:
102 				usage(1);
103 				/* not reached */
104 			}
105 			break;
106 		case 'S':
107 			SplitupOptStr = strdup(optarg);
108 			SplitupOpt = strtoull(optarg, &ptr, 0);
109 			switch(*ptr) {
110 			case 'g':
111 			case 'G':
112 				SplitupOpt *= 1024;
113 				/* fall through */
114 			case 'm':
115 			case 'M':
116 				SplitupOpt *= 1024;
117 				/* fall through */
118 			case 'k':
119 			case 'K':
120 				SplitupOpt *= 1024;
121 				break;
122 			case '\0':
123 				/* bytes per second if no suffix */
124 				break;
125 			default:
126 				usage(1);
127 				/* not reached */
128 			}
129 			break;
130 		case 'c':
131 			CyclePath = optarg;
132 			break;
133 		case 'd':
134 			++DebugOpt;
135 			break;
136 		case 'e':
137 			ScoreBoardFile = optarg;
138 			break;
139 		case 'h':
140 			usage(0);
141 			/* not reached */
142 		case 'i':
143 			DelayOpt = strtol(optarg, NULL, 0);
144 			break;
145 		case 'm':
146 			MemoryLimit = strtouq(optarg, &ptr, 0);
147 			switch(*ptr) {
148 			case 't':
149 			case 'T':
150 				MemoryLimit *= 1024;
151 				/* fall through */
152 			case 'g':
153 			case 'G':
154 				MemoryLimit *= 1024;
155 				/* fall through */
156 			case 'm':
157 			case 'M':
158 				MemoryLimit *= 1024;
159 				/* fall through */
160 			case 'k':
161 			case 'K':
162 				MemoryLimit *= 1024;
163 				/* fall through */
164 			default:
165 				break;
166 			}
167 
168 			/* minimum limit */
169 			if (MemoryLimit < 1024 * 1024)
170 				MemoryLimit = 1024 * 1024;
171 			break;
172 		case 'p':
173 			SshPort = optarg;
174 			break;
175 		case 'r':
176 			RecurseOpt = 1;
177 			break;
178 		case 'f':
179 			blkdevs = optarg;
180 			break;
181 		case 't':
182 			TimeoutOpt = strtol(optarg, NULL, 0);
183 			break;
184 		case 'v':
185 			if (QuietOpt > 0)
186 				--QuietOpt;
187 			else
188 				++VerboseOpt;
189 			break;
190 		case 'q':
191 			if (VerboseOpt > 0)
192 				--VerboseOpt;
193 			else
194 				++QuietOpt;
195 			break;
196 		case 'A':
197 			AllPFS = 1;
198 			break;
199 		case 'B':
200 			BulkOpt = 1;
201 			break;
202 		case 'C':
203 			if (hammer_parse_cache_size(optarg) == -1) {
204 				usage(1);
205 				/* not reached */
206 			}
207 			break;
208 		case 'F':
209 			ForceOpt = 1;
210 			break;
211 		case 'R':
212 			if (restrictcmd == NULL)
213 				restrictcmd = optarg;
214 			break;
215 		case 'T':
216 			if (RestrictTarget == NULL)
217 				RestrictTarget = optarg;
218 			break;
219 		case 'X':
220 			CompressOpt = 1;
221 			break;
222 		default:
223 			usage(1);
224 			/* not reached */
225 		}
226 	}
227 	ac -= optind;
228 	av += optind;
229 	if (ac < 1) {
230 		usage(1);
231 		/* not reached */
232 	}
233 
234 	signal(SIGALRM, sigalrm);
235 	signal(SIGINT, sigintr);
236 
237 	/*
238 	 * Check command restriction (used by hammer ssh-remote).  Several
239 	 * commands may be iterated with a comma.
240 	 */
241 	if (restrictcmd) {
242 		char *elm, *dup;
243 
244 		dup = ptr = strdup(restrictcmd);
245 		while ((elm = strsep(&ptr, ",")) != NULL) {
246 			if (strcmp(av[0], elm) == 0)
247 				break;
248 		}
249 		if (elm == NULL) {
250 			errx(1, "hammer-remote: request does not match "
251 				"restricted command");
252 			/* not reached */
253 		}
254 		free(dup);
255 	}
256 
257 	/*
258 	 * Lookup the filesystem type
259 	 */
260 	if (hammer_uuid_name_lookup(&Hammer_FSType, HAMMER_FSTYPE_STRING)) {
261 		errx(1, "uuids file does not have the DragonFly "
262 			"HAMMER filesystem type");
263 		/* not reached */
264 	}
265 
266 	/*
267 	 * Parse commands
268 	 */
269 	if (strcmp(av[0], "synctid") == 0) {
270 		hammer_cmd_synctid(av + 1, ac - 1);
271 		exit(0);
272 	}
273 	if (strcmp(av[0], "namekey2") == 0) {
274 		int64_t key;
275 		int32_t crcx;
276 		int len;
277 		const char *aname = av[1];
278 
279 		if (aname == NULL) {
280 			usage(1);
281 			/* not reached */
282 		}
283 		len = strlen(aname);
284 		key = (uint32_t)crc32(aname, len) & 0xFFFFFFFEU;
285 
286 		switch(len) {
287 		default:
288 			crcx = crc32(aname + 3, len - 5);
289 			crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
290 			key |= (int64_t)(crcx & 0x3F) << 42;
291 			/* fall through */
292 		case 5:
293 		case 4:
294 			/* fall through */
295 		case 3:
296 			key |= ((int64_t)(aname[2] & 0x1F) << 48);
297 			/* fall through */
298 		case 2:
299 			key |= ((int64_t)(aname[1] & 0x1F) << 53) |
300 			       ((int64_t)(aname[len-2] & 0x1F) << 37);
301 			/* fall through */
302 		case 1:
303 			key |= ((int64_t)(aname[0] & 0x1F) << 58) |
304 			       ((int64_t)(aname[len-1] & 0x1F) << 32);
305 			/* fall through */
306 		case 0:
307 			break;
308 		}
309 		if (key == 0)
310 			key |= 0x100000000LL;
311 		printf("0x%016jx\n", (uintmax_t)key);
312 		exit(0);
313 	}
314 	if (strcmp(av[0], "namekey1") == 0) {
315 		int64_t key;
316 
317 		if (av[1] == NULL) {
318 			usage(1);
319 			/* not reached */
320 		}
321 		key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
322 		if (key == 0)
323 			key |= 0x100000000LL;
324 		printf("0x%016jx\n", (uintmax_t)key);
325 		exit(0);
326 	}
327 	if (strcmp(av[0], "namekey32") == 0) {
328 		int32_t key;
329 
330 		if (av[1] == NULL) {
331 			usage(1);
332 			/* not reached */
333 		}
334 		key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
335 		if (key == 0)
336 			++key;
337 		printf("0x%08x\n", key);
338 		exit(0);
339 	}
340 	if (strcmp(av[0], "pfs-status") == 0) {
341 		hammer_cmd_pseudofs_status(av + 1, ac - 1);
342 		exit(0);
343 	}
344 	if (strcmp(av[0], "pfs-master") == 0) {
345 		hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
346 		exit(0);
347 	}
348 	if (strcmp(av[0], "pfs-slave") == 0) {
349 		hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
350 		exit(0);
351 	}
352 	if (strcmp(av[0], "pfs-update") == 0) {
353 		hammer_cmd_pseudofs_update(av + 1, ac - 1);
354 		exit(0);
355 	}
356 	if (strcmp(av[0], "pfs-upgrade") == 0) {
357 		hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
358 		exit(0);
359 	}
360 	if (strcmp(av[0], "pfs-downgrade") == 0) {
361 		hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
362 		exit(0);
363 	}
364 	if (strcmp(av[0], "pfs-destroy") == 0) {
365 		hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
366 		exit(0);
367 	}
368 	if (strcmp(av[0], "prune") == 0) {
369 		hammer_cmd_softprune(av + 1, ac - 1, 0);
370 		exit(0);
371 	}
372 	if (strcmp(av[0], "prune-everything") == 0) {
373 		hammer_cmd_softprune(av + 1, ac - 1, 1);
374 		exit(0);
375 	}
376 	if (strcmp(av[0], "config") == 0) {
377 		hammer_cmd_config(av + 1, ac - 1);
378 		exit(0);
379 	}
380 	if (strcmp(av[0], "viconfig") == 0) {
381 		hammer_cmd_viconfig(av + 1, ac - 1);
382 		exit(0);
383 	}
384 	if (strcmp(av[0], "cleanup") == 0) {
385 		hammer_cmd_cleanup(av + 1, ac - 1);
386 		exit(0);
387 	}
388 	if (strcmp(av[0], "abort-cleanup") == 0) {
389 		hammer_cmd_abort_cleanup(av + 1, ac - 1);
390 		exit(0);
391 	}
392 	if (strcmp(av[0], "info") == 0) {
393 		hammer_cmd_info(av + 1, ac - 1);
394 		exit(0);
395 	}
396 	if (strcmp(av[0], "ssh-remote") == 0) {
397 		if (ac != 3) {
398 			usage(1);
399 			/* not reached */
400 		}
401 		hammer_cmd_sshremote(av[1], av[2]);
402 		exit(0);
403 	}
404 	if (strcmp(av[0], "snap") == 0) {
405 		hammer_cmd_snap(av + 1, ac - 1, 0, 1);
406 		exit(0);
407 	}
408 	if (strcmp(av[0], "snaplo") == 0) {
409 		hammer_cmd_snap(av + 1, ac - 1, 0, 0);
410 		exit(0);
411 	}
412 	if (strcmp(av[0], "snapq") == 0) {
413 		hammer_cmd_snap(av + 1, ac - 1, 1, 0);
414 		exit(0);
415 	}
416 	if (strcmp(av[0], "snapls") == 0) {
417 		hammer_cmd_snapls(av + 1, ac - 1);
418 		exit(0);
419 	}
420 	if (strcmp(av[0], "snaprm") == 0) {
421 		hammer_cmd_snaprm(av + 1, ac - 1);
422 		exit(0);
423 	}
424 	if (strcmp(av[0], "snapshot") == 0) {
425 		hammer_cmd_snapshot(av + 1, ac - 1);
426 		exit(0);
427 	}
428 	if (strcmp(av[0], "bstats") == 0) {
429 		hammer_cmd_bstats(av + 1, ac - 1);
430 		exit(0);
431 	}
432 	if (strcmp(av[0], "iostats") == 0) {
433 		hammer_cmd_iostats(av + 1, ac - 1);
434 		exit(0);
435 	}
436 	if (strcmp(av[0], "stats") == 0) {
437 		hammer_cmd_stats(av + 1, ac - 1);
438 		exit(0);
439 	}
440 
441 	if (strncmp(av[0], "history", 7) == 0) {
442 		hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
443 		exit(0);
444 	}
445 	if (strcmp(av[0], "rebalance") == 0) {
446 		signal(SIGINT, sigalrm);
447 		hammer_cmd_rebalance(av + 1, ac - 1);
448 		exit(0);
449 	}
450 	if (strncmp(av[0], "reblock", 7) == 0) {
451 		signal(SIGINT, sigalrm);
452 		if (strcmp(av[0], "reblock") == 0)
453 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_FLAGS);
454 		else if (strcmp(av[0], "reblock-btree") == 0)
455 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
456 		else if (strcmp(av[0], "reblock-inodes") == 0)
457 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
458 		else if (strcmp(av[0], "reblock-dirs") == 0)
459 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
460 		else if (strcmp(av[0], "reblock-data") == 0)
461 			hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
462 		else {
463 			usage(1);
464 			/* not reached */
465 		}
466 		exit(0);
467 	}
468 	if (strncmp(av[0], "mirror", 6) == 0) {
469 		if (strcmp(av[0], "mirror-read") == 0)
470 			hammer_cmd_mirror_read(av + 1, ac - 1, 0);
471 		else if (strcmp(av[0], "mirror-read-stream") == 0)
472 			hammer_cmd_mirror_read(av + 1, ac - 1, 1);
473 		else if (strcmp(av[0], "mirror-write") == 0)
474 			hammer_cmd_mirror_write(av + 1, ac - 1);
475 		else if (strcmp(av[0], "mirror-copy") == 0)
476 			hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
477 		else if (strcmp(av[0], "mirror-stream") == 0)
478 			hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
479 		else if (strcmp(av[0], "mirror-dump") == 0)
480 			hammer_cmd_mirror_dump(av + 1, ac - 1);
481 		else {
482 			usage(1);
483 			/* not reached */
484 		}
485 		exit(0);
486 	}
487 	if (strcmp(av[0], "dedup-simulate") == 0) {
488 		hammer_cmd_dedup_simulate(av + 1, ac - 1);
489 		exit(0);
490 	}
491 	if (strcmp(av[0], "dedup") == 0) {
492 		hammer_cmd_dedup(av + 1, ac - 1);
493 		exit(0);
494 	}
495 	if (strcmp(av[0], "version") == 0) {
496 		hammer_cmd_get_version(av + 1, ac - 1);
497 		exit(0);
498 	}
499 	if (strcmp(av[0], "version-upgrade") == 0) {
500 		hammer_cmd_set_version(av + 1, ac - 1);
501 		exit(0);
502 	}
503 	if (strcmp(av[0], "volume-add") == 0) {
504 		hammer_cmd_volume_add(av + 1, ac - 1);
505 		exit(0);
506 	}
507 	if (strcmp(av[0], "volume-del") == 0) {
508 		hammer_cmd_volume_del(av + 1, ac - 1);
509 		exit(0);
510 	}
511 	if (strcmp(av[0], "volume-list") == 0) {
512 		hammer_cmd_volume_list(av + 1, ac - 1);
513 		exit(0);
514 	}
515 	if (strcmp(av[0], "volume-blkdevs") == 0) {
516 		hammer_cmd_volume_blkdevs(av + 1, ac - 1);
517 		exit(0);
518 	}
519 
520 	if (strcmp(av[0], "show") == 0) {
521 		const char *arg = NULL;
522 		char *p, *dup;
523 		int filter = -1;
524 		int obfuscate = 0;
525 		int indent = 0;
526 
527 		hammer_parse_blkdevs(blkdevs, O_RDONLY);
528 		if (ac > 3) {
529 			errx(1, "Too many options specified");
530 			/* not reached */
531 		}
532 		if (ac > 1)
533 			arg = av[1];
534 		if (ac > 2) {
535 			dup = ptr = strdup(av[2]);
536 			while ((p = strsep(&ptr, ",")) != NULL) {
537 				if (strcmp(p, "filter") == 0)
538 					filter = 1;
539 				else if (strcmp(p, "nofilter") == 0)
540 					filter = 0;
541 				else if (strcmp(p, "obfuscate") == 0)
542 					obfuscate = 1;
543 				else if (strcmp(p, "indent") == 0)
544 					indent = 1;
545 			}
546 			free(dup);
547 		}
548 		hammer_cmd_show(arg, filter, obfuscate, indent);
549 		exit(0);
550 	}
551 	if (strcmp(av[0], "show-undo") == 0) {
552 		hammer_parse_blkdevs(blkdevs, O_RDONLY);
553 		hammer_cmd_show_undo();
554 		exit(0);
555 	}
556 	if (strcmp(av[0], "recover") == 0) {
557 		__hammer_parse_blkdevs(blkdevs, O_RDONLY, 0, 1);
558 		hammer_cmd_recover(av + 1, ac - 1);
559 		exit(0);
560 	}
561 	if (strcmp(av[0], "blockmap") == 0) {
562 		hammer_parse_blkdevs(blkdevs, O_RDONLY);
563 		hammer_cmd_blockmap();
564 		exit(0);
565 	}
566 	if (strcmp(av[0], "checkmap") == 0) {
567 		hammer_parse_blkdevs(blkdevs, O_RDONLY);
568 		hammer_cmd_checkmap();
569 		exit(0);
570 	}
571 	if (strcmp(av[0], "strip") == 0) {
572 		__hammer_parse_blkdevs(blkdevs, O_RDWR, 0, 0);
573 		hammer_cmd_strip();
574 		exit(0);
575 	}
576 
577 	usage(1);
578 	/* not reached */
579 	return(0);
580 }
581 
582 /*
583  * Parse the device specification.
584  *
585  * Multi-volume hammer devices are colon-separated.  Each element
586  * may be further expanded via /etc/devtab.  One may also specify
587  * a single element which is expanded into multiple elements via
588  * /etc/devtab.
589  */
590 static
591 void
__hammer_parse_blkdevs(const char * blkdevs,int oflags,int verify_volume,int verify_count)592 __hammer_parse_blkdevs(const char *blkdevs, int oflags, int verify_volume,
593 	int verify_count)
594 {
595 	volume_info_t volume = NULL;
596 	char *copy;
597 	char *volname;
598 	int vol_count = 0;
599 
600 	if (blkdevs == NULL) {
601 		errx(1, "A -f blkdevs specification is required "
602 			"for this command");
603 		/* not reached */
604 	}
605 
606 	copy = strdup(blkdevs);
607 	while ((volname = copy) != NULL) {
608 		if ((copy = strchr(copy, ':')) != NULL)
609 			*copy++ = 0;
610 		volname = getdevpath(volname, 0);
611 		if (strchr(volname, ':')) {
612 			__hammer_parse_blkdevs(volname, oflags, verify_volume,
613 				verify_count);
614 		} else {
615 			volume = load_volume(volname, oflags, verify_volume);
616 			assert(volume);
617 			++vol_count;
618 		}
619 		free(volname);
620 	}
621 	free(copy);
622 
623 	assert(volume);
624 	if (verify_count) {
625 		if (vol_count != volume->ondisk->vol_count) {
626 			errx(1, "Volume header says %d volumes, but %d specified.",
627 				volume->ondisk->vol_count, vol_count);
628 			/* not reached */
629 		}
630 		if (get_root_volume() == NULL) {
631 			errx(1, "No root volume found");
632 			/* not reached */
633 		}
634 	}
635 }
636 
637 static __inline
638 void
hammer_parse_blkdevs(const char * blkdevs,int oflags)639 hammer_parse_blkdevs(const char *blkdevs, int oflags)
640 {
641 	__hammer_parse_blkdevs(blkdevs, oflags, 1, 1);
642 }
643 
644 static
645 void
sigalrm(int signo __unused)646 sigalrm(int signo __unused)
647 {
648 	/* do nothing (interrupts HAMMER ioctl) */
649 }
650 
651 static
652 void
sigintr(int signo __unused)653 sigintr(int signo __unused)
654 {
655 	if (RunningIoctl == 0)
656 		_exit(1);
657 	DidInterrupt = 1;
658 	/* do nothing (interrupts HAMMER ioctl) */
659 }
660 
661 static
662 void
usage(int exit_code)663 usage(int exit_code)
664 {
665 	fprintf(stderr,
666 		"hammer -h\n"
667 		"hammer [-2ABFqrvXy] [-b bandwidth] [-C cachesize[:readahead]] \n"
668 		"       [-R restrictcmd] [-T restrictpath] [-c cyclefile]\n"
669 		"       [-e scoreboardfile] [-f blkdevs] [-i delay] [-p ssh-port]\n"
670 		"       [-S splitsize] [-t seconds] [-m memlimit] command [argument ...]\n"
671 		"hammer synctid <filesystem> [quick]\n"
672 		"hammer bstats [interval]\n"
673 		"hammer iostats [interval]\n"
674 		"hammer stats [interval]\n"
675 		"hammer history[@offset[,len]] <file> ...\n"
676 		"hammer namekey1 <path>\n"
677 		"hammer namekey2 <path>\n"
678 		"hammer namekey32 <path>\n"
679 		"hammer cleanup [<filesystem> ...]\n"
680 		"hammer abort-cleanup\n"
681 		"hammer info [<dirpath> ...]\n"
682 		"hammer snapshot [<filesystem>] <snapshot-dir>\n"
683 		"hammer snapshot <filesystem> <snapshot-dir> [<note>]\n"
684 		"hammer prune <softlink-dir>\n"
685 		"hammer prune-everything <filesystem>\n"
686 		"hammer rebalance <filesystem> [saturation_percentage]\n"
687 		"hammer reblock[-btree|-inodes|-dirs|-data] "
688 			"<filesystem> [fill_percentage]\n"
689 		"hammer pfs-status <dirpath> ...\n"
690 		"hammer pfs-master <dirpath> [options]\n"
691 		"hammer pfs-slave <dirpath> [options]\n"
692 		"hammer pfs-update <dirpath> [options]\n"
693 		"hammer pfs-upgrade <dirpath>\n"
694 		"hammer pfs-downgrade <dirpath>\n"
695 		"hammer pfs-destroy <dirpath>\n"
696 		"hammer mirror-read <filesystem> [begin-tid]\n"
697 		"hammer mirror-read-stream <filesystem> [begin-tid]\n"
698 		"hammer mirror-write <filesystem>\n"
699 		"hammer mirror-dump [header]\n"
700 		"hammer mirror-copy [[user@]host:]<filesystem>"
701 				  " [[user@]host:]<filesystem>\n"
702 		"hammer mirror-stream [[user@]host:]<filesystem>"
703 				    " [[user@]host:]<filesystem>\n"
704 		"hammer ssh-remote command filesystem\n"
705 		"hammer version <filesystem>\n"
706 		"hammer version-upgrade <filesystem> <version> [force]\n"
707 		"hammer volume-add <device> <filesystem>\n"
708 		"hammer volume-del <device> <filesystem>\n"
709 		"hammer volume-list <filesystem>\n"
710 		"hammer volume-blkdevs <filesystem>\n"
711 	);
712 
713 	fprintf(stderr, "\nHAMMER utility version 3+ commands:\n");
714 
715 	fprintf(stderr,
716 		"hammer config [<filesystem> [<configfile>]]\n"
717 		"hammer viconfig [<filesystem>]\n"
718 		"hammer snap <path> [<note>]\n"
719 		"hammer snaplo <path> [<note>]\n"
720 		"hammer snapq <dir> [<note>]\n"
721 		"hammer snaprm <path> ...\n"
722 		"hammer snaprm <transid> ...\n"
723 		"hammer snaprm <filesystem> <transid> ...\n"
724 		"hammer snapls [<path> ...]\n"
725 	);
726 
727 	fprintf(stderr, "\nHAMMER utility version 4+ commands:\n");
728 
729 	fprintf(stderr,
730 		"hammer -f blkdevs blockmap\n"
731 		"hammer -f blkdevs checkmap\n"
732 		"hammer -f blkdevs [-qqq] show [lo:objid]\n"
733 		"hammer -f blkdevs show-undo\n"
734 		"hammer -f blkdevs recover <target_dir> [full|quick]\n"
735 		"hammer -f blkdevs strip\n"
736 	);
737 
738 	fprintf(stderr, "\nHAMMER utility version 5+ commands:\n");
739 
740 	fprintf(stderr,
741 		"hammer dedup-simulate <filesystem>\n"
742 		"hammer dedup <filesystem>\n"
743 	);
744 
745 	exit(exit_code);
746 }
747 
748