sbin/hammer/hammer.c

   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  * $DragonFly: src/sbin/hammer/hammer.c,v 1.44 2008/11/13 02:04:27 dillon Exp $
  35  */
  36
  37 #include "hammer.h"
  38 #include <signal.h>
  39 #include <math.h>
  40 #include <fstab.h>
  41
  42 static void hammer_parsedevs(const char *blkdevs);
  43 static void sigalrm(int signo);
  44 static void sigintr(int signo);
  45 static void usage(int exit_code);
  46
  47 int RecurseOpt;
  48 int VerboseOpt;
  49 int QuietOpt;
  50 int NoSyncOpt;
  51 int TwoWayPipeOpt;
  52 int TimeoutOpt;
  53 int DelayOpt = 5;
  54 char *SshPort;
  55 int ForceYesOpt = 0;
  56 int CompressOpt;
  57 int ForceOpt;
  58 int RunningIoctl;
  59 int DidInterrupt;
  60 int BulkOpt;
  61 u_int64_t BandwidthOpt;
  62 u_int64_t SplitupOpt = 4ULL * 1024ULL * 1024ULL * 1024ULL;
  63 u_int64_t MemoryLimit = 1024LLU * 1024 * 1024;
  64 const char *SplitupOptStr;
  65 const char *CyclePath;
  66 const char *LinkPath;
  67
  68 int
  69 main(int ac, char **av)
  70 {
  71         char *blkdevs = NULL;
  72         char *ptr;
  73         u_int32_t status;
  74         int ch;
  75         int cacheSize = 0;
  76
  77         while ((ch = getopt(ac, av, "b:c:dhf:i:m:p:qrs:t:v2yBC:FS:X")) != -1) {
  78                 switch(ch) {
  79                 case '2':
  80                         TwoWayPipeOpt = 1;
  81                         break;
  82                 case 'y':
  83                         ForceYesOpt = 1;
  84                         break;
  85                 case 'b':
  86                         BandwidthOpt = strtoull(optarg, &ptr, 0);
  87                         switch(*ptr) {
  88                         case 'g':
  89                         case 'G':
  90                                 BandwidthOpt *= 1024;
  91                                 /* fall through */
  92                         case 'm':
  93                         case 'M':
  94                                 BandwidthOpt *= 1024;
  95                                 /* fall through */
  96                         case 'k':
  97                         case 'K':
  98                                 BandwidthOpt *= 1024;
  99                                 break;
 100                         case '\0':
 101                                 /* bytes per second if no suffix */
 102                                 break;
 103                         default:
 104                                 usage(1);
 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                         }
 129                         break;
 130                 case 'c':
 131                         CyclePath = optarg;
 132                         break;
 133                 case 'd':
 134                         ++DebugOpt;
 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;
 163                         }
 164
 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 's':
 179                         LinkPath = 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 'B':
 197                         BulkOpt = 1;
 198                         break;
 199                 case 'C':
 200                         cacheSize = strtol(optarg, &ptr, 0);
 201                         switch(*ptr) {
 202                         case 'm':
 203                         case 'M':
 204                                 cacheSize *= 1024;
 205                                 /* fall through */
 206                         case 'k':
 207                         case 'K':
 208                                 cacheSize *= 1024;
 209                                 ++ptr;
 210                                 break;
 211                         case '\0':
 212                         case ':':
 213                                 /* bytes if no suffix */
 214                                 break;
 215                         default:
 216                                 usage(1);
 217                         }
 218                         if (*ptr == ':') {
 219                                 UseReadAhead = strtol(ptr + 1, NULL, 0);
 220                                 UseReadBehind = -UseReadAhead;
 221                         }
 222                         if (cacheSize < 1024 * 1024)
 223                                 cacheSize = 1024 * 1024;
 224                         if (UseReadAhead < 0)
 225                                 usage(1);
 226                         if (UseReadAhead * HAMMER_BUFSIZE / cacheSize / 16) {
 227                                 UseReadAhead = cacheSize / 16 / HAMMER_BUFSIZE;
 228                                 UseReadBehind = -UseReadAhead;
 229                         }
 230                         hammer_cache_set(cacheSize);
 231                         break;
 232                 case 'F':
 233                         ForceOpt = 1;
 234                         break;
 235                 case 'X':
 236                         CompressOpt = 1;
 237                         break;
 238                 default:
 239                         usage(1);
 240                         /* not reached */
 241                 }
 242         }
 243         ac -= optind;
 244         av += optind;
 245         if (ac < 1) {
 246                 usage(1);
 247                 /* not reached */
 248         }
 249
 250         signal(SIGALRM, sigalrm);
 251         signal(SIGINT, sigintr);
 252
 253         if (strcmp(av[0], "synctid") == 0) {
 254                 hammer_cmd_synctid(av + 1, ac - 1);
 255                 exit(0);
 256         }
 257         if (strcmp(av[0], "namekey2") == 0) {
 258                 int64_t key;
 259                 int32_t crcx;
 260                 int len;
 261                 const char *aname = av[1];
 262
 263                 if (aname == NULL)
 264                         usage(1);
 265                 len = strlen(aname);
 266                 key = (u_int32_t)crc32(aname, len) & 0xFFFFFFFEU;
 267
 268                 switch(len) {
 269                 default:
 270                         crcx = crc32(aname + 3, len - 5);
 271                         crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
 272                         key |= (int64_t)(crcx & 0x3F) << 42;
 273                         /* fall through */
 274                 case 5:
 275                 case 4:
 276                         /* fall through */
 277                 case 3:
 278                         key |= ((int64_t)(aname[2] & 0x1F) << 48);
 279                         /* fall through */
 280                 case 2:
 281                         key |= ((int64_t)(aname[1] & 0x1F) << 53) |
 282                                ((int64_t)(aname[len-2] & 0x1F) << 37);
 283                         /* fall through */
 284                 case 1:
 285                         key |= ((int64_t)(aname[0] & 0x1F) << 58) |
 286                                ((int64_t)(aname[len-1] & 0x1F) << 32);
 287                         /* fall through */
 288                 case 0:
 289                         break;
 290                 }
 291                 if (key == 0)
 292                         key |= 0x100000000LL;
 293                 printf("0x%016jx\n", (uintmax_t)key);
 294                 exit(0);
 295         }
 296         if (strcmp(av[0], "namekey1") == 0) {
 297                 int64_t key;
 298
 299                 if (av[1] == NULL)
 300                         usage(1);
 301                 key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
 302                 if (key == 0)
 303                         key |= 0x100000000LL;
 304                 printf("0x%016jx\n", (uintmax_t)key);
 305                 exit(0);
 306         }
 307         if (strcmp(av[0], "namekey32") == 0) {
 308                 int32_t key;
 309
 310                 if (av[1] == NULL)
 311                         usage(1);
 312                 key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
 313                 if (key == 0)
 314                         ++key;
 315                 printf("0x%08x\n", key);
 316                 exit(0);
 317         }
 318         if (strcmp(av[0], "pfs-status") == 0) {
 319                 hammer_cmd_pseudofs_status(av + 1, ac - 1);
 320                 exit(0);
 321         }
 322         if (strcmp(av[0], "pfs-master") == 0) {
 323                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
 324                 exit(0);
 325         }
 326         if (strcmp(av[0], "pfs-slave") == 0) {
 327                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
 328                 exit(0);
 329         }
 330         if (strcmp(av[0], "pfs-update") == 0) {
 331                 hammer_cmd_pseudofs_update(av + 1, ac - 1);
 332                 exit(0);
 333         }
 334         if (strcmp(av[0], "pfs-upgrade") == 0) {
 335                 hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
 336                 exit(0);
 337         }
 338         if (strcmp(av[0], "pfs-downgrade") == 0) {
 339                 hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
 340                 exit(0);
 341         }
 342         if (strcmp(av[0], "pfs-destroy") == 0) {
 343                 hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
 344                 exit(0);
 345         }
 346         if (strcmp(av[0], "status") == 0) {
 347                 hammer_cmd_status(av + 1, ac - 1);
 348                 exit(0);
 349         }
 350         if (strcmp(av[0], "prune") == 0) {
 351                 hammer_cmd_softprune(av + 1, ac - 1, 0);
 352                 exit(0);
 353         }
 354         if (strcmp(av[0], "config") == 0) {
 355                 hammer_cmd_config(av + 1, ac - 1);
 356                 exit(0);
 357         }
 358         if (strcmp(av[0], "viconfig") == 0) {
 359                 hammer_cmd_viconfig(av + 1, ac - 1);
 360                 exit(0);
 361         }
 362         if (strcmp(av[0], "cleanup") == 0) {
 363                 hammer_cmd_cleanup(av + 1, ac - 1);
 364                 exit(0);
 365         }
 366         if (strcmp(av[0], "info") == 0) {
 367                 hammer_cmd_info();
 368                 exit(0);
 369         }
 370         if (strcmp(av[0], "prune-everything") == 0) {
 371                 hammer_cmd_softprune(av + 1, ac - 1, 1);
 372                 exit(0);
 373         }
 374         if (strcmp(av[0], "snap") == 0) {
 375                 hammer_cmd_snap(av + 1, ac - 1, 0, 1);
 376                 exit(0);
 377         }
 378         if (strcmp(av[0], "snaplo") == 0) {
 379                 hammer_cmd_snap(av + 1, ac - 1, 0, 0);
 380                 exit(0);
 381         }
 382         if (strcmp(av[0], "snapq") == 0) {
 383                 hammer_cmd_snap(av + 1, ac - 1, 1, 0);
 384                 exit(0);
 385         }
 386         if (strcmp(av[0], "snapls") == 0) {
 387                 hammer_cmd_snapls(av + 1, ac - 1);
 388                 exit(0);
 389         }
 390         if (strcmp(av[0], "snaprm") == 0) {
 391                 hammer_cmd_snaprm(av + 1, ac - 1);
 392                 exit(0);
 393         }
 394         if (strcmp(av[0], "snapshot") == 0) {
 395                 hammer_cmd_snapshot(av + 1, ac - 1);
 396                 exit(0);
 397         }
 398         if (strcmp(av[0], "bstats") == 0) {
 399                 hammer_cmd_bstats(av + 1, ac - 1);
 400                 exit(0);
 401         }
 402         if (strcmp(av[0], "iostats") == 0) {
 403                 hammer_cmd_iostats(av + 1, ac - 1);
 404                 exit(0);
 405         }
 406
 407         if (strncmp(av[0], "history", 7) == 0) {
 408                 hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
 409                 exit(0);
 410         }
 411         if (strcmp(av[0], "rebalance") == 0) {
 412                 signal(SIGINT, sigalrm);
 413                 hammer_cmd_rebalance(av + 1, ac - 1);
 414                 exit(0);
 415         }
 416         if (strncmp(av[0], "reblock", 7) == 0) {
 417                 signal(SIGINT, sigalrm);
 418                 if (strcmp(av[0], "reblock") == 0)
 419                         hammer_cmd_reblock(av + 1, ac - 1, -1);
 420                 else if (strcmp(av[0], "reblock-btree") == 0)
 421                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
 422                 else if (strcmp(av[0], "reblock-inodes") == 0)
 423                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
 424                 else if (strcmp(av[0], "reblock-dirs") == 0)
 425                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
 426                 else if (strcmp(av[0], "reblock-data") == 0)
 427                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
 428                 else
 429                         usage(1);
 430                 exit(0);
 431         }
 432         if (strncmp(av[0], "mirror", 6) == 0) {
 433                 if (strcmp(av[0], "mirror-read") == 0)
 434                         hammer_cmd_mirror_read(av + 1, ac - 1, 0);
 435                 else if (strcmp(av[0], "mirror-read-stream") == 0)
 436                         hammer_cmd_mirror_read(av + 1, ac - 1, 1);
 437                 else if (strcmp(av[0], "mirror-write") == 0)
 438                         hammer_cmd_mirror_write(av + 1, ac - 1);
 439                 else if (strcmp(av[0], "mirror-copy") == 0)
 440                         hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
 441                 else if (strcmp(av[0], "mirror-stream") == 0)
 442                         hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
 443                 else if (strcmp(av[0], "mirror-dump") == 0)
 444                         hammer_cmd_mirror_dump();
 445                 else
 446                         usage(1);
 447                 exit(0);
 448         }
 449         if (strcmp(av[0], "dedup-simulate") == 0) {
 450                 hammer_cmd_dedup_simulate(av + 1, ac - 1);
 451                 exit(0);
 452         }
 453         if (strcmp(av[0], "dedup") == 0) {
 454                 hammer_cmd_dedup(av + 1, ac - 1);
 455                 exit(0);
 456         }
 457         if (strcmp(av[0], "version") == 0) {
 458                 hammer_cmd_get_version(av + 1, ac - 1);
 459                 exit(0);
 460         }
 461         if (strcmp(av[0], "version-upgrade") == 0) {
 462                 hammer_cmd_set_version(av + 1, ac - 1);
 463                 exit(0);
 464         }
 465         if (strcmp(av[0], "volume-add") == 0) {
 466                 hammer_cmd_volume_add(av + 1, ac - 1);
 467                 exit(0);
 468         }
 469         if (strcmp(av[0], "volume-del") == 0) {
 470                 hammer_cmd_volume_del(av + 1, ac - 1);
 471                 exit(0);
 472         }
 473         if (strcmp(av[0], "volume-list") == 0) {
 474                 hammer_cmd_volume_list(av + 1, ac - 1);
 475                 exit(0);
 476         }
 477
 478         uuid_name_lookup(&Hammer_FSType, "DragonFly HAMMER", &status);
 479         if (status != uuid_s_ok) {
 480                 errx(1, "uuids file does not have the DragonFly "
 481                         "HAMMER filesystem type");
 482         }
 483
 484         if (strcmp(av[0], "show") == 0) {
 485                 u_int32_t lo = 0;
 486                 intmax_t obj_id = (int64_t)HAMMER_MIN_OBJID;
 487
 488                 hammer_parsedevs(blkdevs);
 489                 if (ac > 1)
 490                         sscanf(av[1], "%08x:%jx", &lo, &obj_id);
 491                 hammer_cmd_show(-1, lo, (int64_t)obj_id, 0, NULL, NULL);
 492                 exit(0);
 493         }
 494         if (strcmp(av[0], "show-undo") == 0) {
 495                 hammer_parsedevs(blkdevs);
 496                 hammer_cmd_show_undo();
 497                 exit(0);
 498         }
 499         if (strcmp(av[0], "recover") == 0) {
 500                 hammer_parsedevs(blkdevs);
 501                 if (ac <= 1)
 502                         errx(1, "hammer recover required target directory");
 503                 hammer_cmd_recover(av[1]);
 504                 exit(0);
 505         }
 506         if (strcmp(av[0], "blockmap") == 0) {
 507                 hammer_parsedevs(blkdevs);
 508                 hammer_cmd_blockmap();
 509                 exit(0);
 510         }
 511         if (strcmp(av[0], "checkmap") == 0) {
 512                 hammer_parsedevs(blkdevs);
 513                 hammer_cmd_checkmap();
 514                 exit(0);
 515         }
 516         usage(1);
 517         /* not reached */
 518         return(0);
 519 }
 520
 521 /*
 522  * Parse the device specification.
 523  *
 524  * Multi-volume hammer devices are colon-separated.  Each element
 525  * may be further expanded via /etc/devtab.  One may also specify
 526  * a single element which is expanded into multiple elements via
 527  * /etc/devtab.
 528  */
 529 static
 530 void
 531 hammer_parsedevs(const char *blkdevs)
 532 {
 533         char *copy;
 534         char *volname;
 535
 536         if (blkdevs == NULL) {
 537                 errx(1, "A -f blkdevs specification is required "
 538                         "for this command");
 539         }
 540
 541         copy = strdup(blkdevs);
 542         while ((volname = copy) != NULL) {
 543                 if ((copy = strchr(copy, ':')) != NULL)
 544                         *copy++ = 0;
 545                 volname = getdevpath(volname, 0);
 546                 if (strchr(volname, ':'))
 547                         hammer_parsedevs(volname);
 548                 else
 549                         setup_volume(-1, volname, 0, O_RDONLY);
 550         }
 551 }
 552
 553 static
 554 void
 555 sigalrm(int signo __unused)
 556 {
 557         /* do nothing (interrupts HAMMER ioctl) */
 558 }
 559
 560 static
 561 void
 562 sigintr(int signo __unused)
 563 {
 564         if (RunningIoctl == 0)
 565                 _exit(1);
 566         DidInterrupt = 1;
 567         /* do nothing (interrupts HAMMER ioctl) */
 568 }
 569
 570 static
 571 void
 572 usage(int exit_code)
 573 {
 574         fprintf(stderr,
 575                 "hammer -h\n"
 576                 "hammer [-2BqrvXy] [-b bandwidth] [-C cachesize[:readahead]] [-c cyclefile]\n"
 577                 "       [-f blkdevs] [-i delay] [-t seconds] [-S splitup]\n"
 578                 "       command [argument ...]\n"
 579                 "hammer synctid <filesystem> [quick]\n"
 580                 "hammer bstats [interval]\n"
 581                 "hammer iostats [interval]\n"
 582                 "hammer history[@offset[,len]] <file> ...\n"
 583                 "hammer namekey1 <path>\n"
 584                 "hammer namekey2 <path>\n"
 585                 "hammer namekey32 <path>\n"
 586                 "hammer cleanup [<filesystem> ...]\n"
 587                 "hammer info\n"
 588                 "hammer snapshot [<filesystem>] <snapshot-dir>\n"
 589                 "hammer snapshot <filesystem> <snapshot-dir> [<note>]\n"
 590                 "hammer prune <softlink-dir>\n"
 591                 "hammer prune-everything <filesystem>\n"
 592                 "hammer rebalance <filesystem> [saturation_percentage]\n"
 593                 "hammer reblock[-btree|-inodes|-dirs|-data] "
 594                         "<filesystem> [fill_percentage]\n"
 595                 "hammer pfs-status <dirpath> ...\n"
 596                 "hammer pfs-master <dirpath> [options]\n"
 597                 "hammer pfs-slave <dirpath> [options]\n"
 598                 "hammer pfs-update <dirpath> [options]\n"
 599                 "hammer pfs-upgrade <dirpath>\n"
 600                 "hammer pfs-downgrade <dirpath>\n"
 601                 "hammer pfs-destroy <dirpath>\n"
 602                 "hammer mirror-read <filesystem> [begin-tid]\n"
 603                 "hammer mirror-read-stream <filesystem> [begin-tid]\n"
 604                 "hammer mirror-write <filesystem>\n"
 605                 "hammer mirror-dump\n"
 606                 "hammer mirror-copy [[user@]host:]<filesystem>"
 607                                   " [[user@]host:]<filesystem>\n"
 608                 "hammer mirror-stream [[user@]host:]<filesystem>"
 609                                     " [[user@]host:]<filesystem>\n"
 610                 "hammer version <filesystem>\n"
 611                 "hammer version-upgrade <filesystem> <version> [force]\n"
 612                 "hammer volume-add <device> <filesystem>\n"
 613                 "hammer volume-del <device> <filesystem>\n"
 614                 "hammer volume-list <filesystem>\n"
 615         );
 616
 617         fprintf(stderr, "\nHAMMER utility version 3+ commands:\n");
 618
 619         fprintf(stderr,
 620                 "hammer config [<filesystem> [<configfile>]]\n"
 621                 "hammer viconfig [<filesystem>]\n"
 622                 "hammer snap <path> [<note>]\n"
 623                 "hammer snaplo <path> [<note>]\n"
 624                 "hammer snapq <dir> [<note>]\n"
 625                 "hammer snaprm <path> ...\n"
 626                 "hammer snaprm <transid> ...\n"
 627                 "hammer snaprm <filesystem> <transid> ...\n"
 628                 "hammer snapls [<path> ...]\n"
 629         );
 630
 631         fprintf(stderr, "\nHAMMER utility version 4+ commands:\n");
 632
 633         fprintf(stderr,
 634                 "hammer -f blkdevs blockmap\n"
 635                 "hammer -f blkdevs checkmap\n"
 636                 "hammer -f blkdevs [-qqq] show [lo:objid]\n"
 637                 "hammer -f blkdevs show-undo\n"
 638                 "hammer -f blkdevs recover <target_dir>\n"
 639         );
 640
 641         fprintf(stderr, "\nHAMMER utility version 5+ commands:\n");
 642
 643         fprintf(stderr,
 644                 "hammer dedup-simulate <filesystem>\n"
 645                 "hammer dedup <filesystem>\n"
 646         );
 647
 648         exit(exit_code);
 649 }
 650