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 *CyclePath;
  65 const char *LinkPath;
  66
  67 int
  68 main(int ac, char **av)
  69 {
  70         char *blkdevs = NULL;
  71         char *ptr;
  72         u_int32_t status;
  73         int ch;
  74         int cacheSize = 0;
  75
  76         while ((ch = getopt(ac, av, "b:c:dhf:i:m:p:qrs:t:v2yBC:FS: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                         }
 105                         break;
 106                 case 'S':
 107                         SplitupOpt = strtoull(optarg, &ptr, 0);
 108                         switch(*ptr) {
 109                         case 'g':
 110                         case 'G':
 111                                 SplitupOpt *= 1024;
 112                                 /* fall through */
 113                         case 'm':
 114                         case 'M':
 115                                 SplitupOpt *= 1024;
 116                                 /* fall through */
 117                         case 'k':
 118                         case 'K':
 119                                 SplitupOpt *= 1024;
 120                                 break;
 121                         case '\0':
 122                                 /* bytes per second if no suffix */
 123                                 break;
 124                         default:
 125                                 usage(1);
 126                         }
 127                         break;
 128                 case 'c':
 129                         CyclePath = optarg;
 130                         break;
 131                 case 'd':
 132                         ++DebugOpt;
 133                         break;
 134                 case 'h':
 135                         usage(0);
 136                         /* not reached */
 137                 case 'i':
 138                         DelayOpt = strtol(optarg, NULL, 0);
 139                         break;
 140                 case 'm':
 141                         MemoryLimit = strtouq(optarg, &ptr, 0);
 142                         switch(*ptr) {
 143                         case 't':
 144                         case 'T':
 145                                 MemoryLimit *= 1024;
 146                                 /* fall through */
 147                         case 'g':
 148                         case 'G':
 149                                 MemoryLimit *= 1024;
 150                                 /* fall through */
 151                         case 'm':
 152                         case 'M':
 153                                 MemoryLimit *= 1024;
 154                                 /* fall through */
 155                         case 'k':
 156                         case 'K':
 157                                 MemoryLimit *= 1024;
 158                                 /* fall through */
 159                         default:
 160                                 break;
 161                         }
 162
 163                         /* minimum limit */
 164                         if (MemoryLimit < 1024 * 1024)
 165                                 MemoryLimit = 1024 * 1024;
 166                         break;
 167                 case 'p':
 168                         SshPort = optarg;
 169                         break;
 170                 case 'r':
 171                         RecurseOpt = 1;
 172                         break;
 173                 case 'f':
 174                         blkdevs = optarg;
 175                         break;
 176                 case 's':
 177                         LinkPath = optarg;
 178                         break;
 179                 case 't':
 180                         TimeoutOpt = strtol(optarg, NULL, 0);
 181                         break;
 182                 case 'v':
 183                         if (QuietOpt > 0)
 184                                 --QuietOpt;
 185                         else
 186                                 ++VerboseOpt;
 187                         break;
 188                 case 'q':
 189                         if (VerboseOpt > 0)
 190                                 --VerboseOpt;
 191                         else
 192                                 ++QuietOpt;
 193                         break;
 194                 case 'B':
 195                         BulkOpt = 1;
 196                         break;
 197                 case 'C':
 198                         cacheSize = strtol(optarg, &ptr, 0);
 199                         switch(*ptr) {
 200                         case 'm':
 201                         case 'M':
 202                                 cacheSize *= 1024;
 203                                 /* fall through */
 204                         case 'k':
 205                         case 'K':
 206                                 cacheSize *= 1024;
 207                                 ++ptr;
 208                                 break;
 209                         case '\0':
 210                         case ':':
 211                                 /* bytes if no suffix */
 212                                 break;
 213                         default:
 214                                 usage(1);
 215                         }
 216                         if (*ptr == ':') {
 217                                 UseReadAhead = strtol(ptr + 1, NULL, 0);
 218                                 UseReadBehind = -UseReadAhead;
 219                         }
 220                         if (cacheSize < 1024 * 1024)
 221                                 cacheSize = 1024 * 1024;
 222                         if (UseReadAhead < 0)
 223                                 usage(1);
 224                         if (UseReadAhead * HAMMER_BUFSIZE / cacheSize / 16) {
 225                                 UseReadAhead = cacheSize / 16 / HAMMER_BUFSIZE;
 226                                 UseReadBehind = -UseReadAhead;
 227                         }
 228                         hammer_cache_set(cacheSize);
 229                         break;
 230                 case 'F':
 231                         ForceOpt = 1;
 232                         break;
 233                 case 'X':
 234                         CompressOpt = 1;
 235                         break;
 236                 default:
 237                         usage(1);
 238                         /* not reached */
 239                 }
 240         }
 241         ac -= optind;
 242         av += optind;
 243         if (ac < 1) {
 244                 usage(1);
 245                 /* not reached */
 246         }
 247
 248         signal(SIGALRM, sigalrm);
 249         signal(SIGINT, sigintr);
 250
 251         if (strcmp(av[0], "synctid") == 0) {
 252                 hammer_cmd_synctid(av + 1, ac - 1);
 253                 exit(0);
 254         }
 255         if (strcmp(av[0], "namekey2") == 0) {
 256                 int64_t key;
 257                 int32_t crcx;
 258                 int len;
 259                 const char *aname = av[1];
 260
 261                 if (aname == NULL)
 262                         usage(1);
 263                 len = strlen(aname);
 264                 key = (u_int32_t)crc32(aname, len) & 0xFFFFFFFEU;
 265
 266                 switch(len) {
 267                 default:
 268                         crcx = crc32(aname + 3, len - 5);
 269                         crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
 270                         key |= (int64_t)(crcx & 0x3F) << 42;
 271                         /* fall through */
 272                 case 5:
 273                 case 4:
 274                         /* fall through */
 275                 case 3:
 276                         key |= ((int64_t)(aname[2] & 0x1F) << 48);
 277                         /* fall through */
 278                 case 2:
 279                         key |= ((int64_t)(aname[1] & 0x1F) << 53) |
 280                                ((int64_t)(aname[len-2] & 0x1F) << 37);
 281                         /* fall through */
 282                 case 1:
 283                         key |= ((int64_t)(aname[0] & 0x1F) << 58) |
 284                                ((int64_t)(aname[len-1] & 0x1F) << 32);
 285                         /* fall through */
 286                 case 0:
 287                         break;
 288                 }
 289                 if (key == 0)
 290                         key |= 0x100000000LL;
 291                 printf("0x%016jx\n", (uintmax_t)key);
 292                 exit(0);
 293         }
 294         if (strcmp(av[0], "namekey1") == 0) {
 295                 int64_t key;
 296
 297                 if (av[1] == NULL)
 298                         usage(1);
 299                 key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
 300                 if (key == 0)
 301                         key |= 0x100000000LL;
 302                 printf("0x%016jx\n", (uintmax_t)key);
 303                 exit(0);
 304         }
 305         if (strcmp(av[0], "namekey32") == 0) {
 306                 int32_t key;
 307
 308                 if (av[1] == NULL)
 309                         usage(1);
 310                 key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
 311                 if (key == 0)
 312                         ++key;
 313                 printf("0x%08x\n", key);
 314                 exit(0);
 315         }
 316         if (strcmp(av[0], "pfs-status") == 0) {
 317                 hammer_cmd_pseudofs_status(av + 1, ac - 1);
 318                 exit(0);
 319         }
 320         if (strcmp(av[0], "pfs-master") == 0) {
 321                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
 322                 exit(0);
 323         }
 324         if (strcmp(av[0], "pfs-slave") == 0) {
 325                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
 326                 exit(0);
 327         }
 328         if (strcmp(av[0], "pfs-update") == 0) {
 329                 hammer_cmd_pseudofs_update(av + 1, ac - 1);
 330                 exit(0);
 331         }
 332         if (strcmp(av[0], "pfs-upgrade") == 0) {
 333                 hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
 334                 exit(0);
 335         }
 336         if (strcmp(av[0], "pfs-downgrade") == 0) {
 337                 hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
 338                 exit(0);
 339         }
 340         if (strcmp(av[0], "pfs-destroy") == 0) {
 341                 hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
 342                 exit(0);
 343         }
 344         if (strcmp(av[0], "status") == 0) {
 345                 hammer_cmd_status(av + 1, ac - 1);
 346                 exit(0);
 347         }
 348         if (strcmp(av[0], "prune") == 0) {
 349                 hammer_cmd_softprune(av + 1, ac - 1, 0);
 350                 exit(0);
 351         }
 352         if (strcmp(av[0], "config") == 0) {
 353                 hammer_cmd_config(av + 1, ac - 1);
 354                 exit(0);
 355         }
 356         if (strcmp(av[0], "viconfig") == 0) {
 357                 hammer_cmd_viconfig(av + 1, ac - 1);
 358                 exit(0);
 359         }
 360         if (strcmp(av[0], "cleanup") == 0) {
 361                 hammer_cmd_cleanup(av + 1, ac - 1);
 362                 exit(0);
 363         }
 364         if (strcmp(av[0], "info") == 0) {
 365                 hammer_cmd_info();
 366                 exit(0);
 367         }
 368         if (strcmp(av[0], "prune-everything") == 0) {
 369                 hammer_cmd_softprune(av + 1, ac - 1, 1);
 370                 exit(0);
 371         }
 372         if (strcmp(av[0], "snap") == 0) {
 373                 hammer_cmd_snap(av + 1, ac - 1, 0, 1);
 374                 exit(0);
 375         }
 376         if (strcmp(av[0], "snaplo") == 0) {
 377                 hammer_cmd_snap(av + 1, ac - 1, 0, 0);
 378                 exit(0);
 379         }
 380         if (strcmp(av[0], "snapq") == 0) {
 381                 hammer_cmd_snap(av + 1, ac - 1, 1, 0);
 382                 exit(0);
 383         }
 384         if (strcmp(av[0], "snapls") == 0) {
 385                 hammer_cmd_snapls(av + 1, ac - 1);
 386                 exit(0);
 387         }
 388         if (strcmp(av[0], "snaprm") == 0) {
 389                 hammer_cmd_snaprm(av + 1, ac - 1);
 390                 exit(0);
 391         }
 392         if (strcmp(av[0], "snapshot") == 0) {
 393                 hammer_cmd_snapshot(av + 1, ac - 1);
 394                 exit(0);
 395         }
 396         if (strcmp(av[0], "bstats") == 0) {
 397                 hammer_cmd_bstats(av + 1, ac - 1);
 398                 exit(0);
 399         }
 400         if (strcmp(av[0], "iostats") == 0) {
 401                 hammer_cmd_iostats(av + 1, ac - 1);
 402                 exit(0);
 403         }
 404
 405         if (strncmp(av[0], "history", 7) == 0) {
 406                 hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
 407                 exit(0);
 408         }
 409         if (strcmp(av[0], "rebalance") == 0) {
 410                 signal(SIGINT, sigalrm);
 411                 hammer_cmd_rebalance(av + 1, ac - 1);
 412                 exit(0);
 413         }
 414         if (strncmp(av[0], "reblock", 7) == 0) {
 415                 signal(SIGINT, sigalrm);
 416                 if (strcmp(av[0], "reblock") == 0)
 417                         hammer_cmd_reblock(av + 1, ac - 1, -1);
 418                 else if (strcmp(av[0], "reblock-btree") == 0)
 419                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
 420                 else if (strcmp(av[0], "reblock-inodes") == 0)
 421                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
 422                 else if (strcmp(av[0], "reblock-dirs") == 0)
 423                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
 424                 else if (strcmp(av[0], "reblock-data") == 0)
 425                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
 426                 else
 427                         usage(1);
 428                 exit(0);
 429         }
 430         if (strncmp(av[0], "mirror", 6) == 0) {
 431                 if (strcmp(av[0], "mirror-read") == 0)
 432                         hammer_cmd_mirror_read(av + 1, ac - 1, 0);
 433                 else if (strcmp(av[0], "mirror-read-stream") == 0)
 434                         hammer_cmd_mirror_read(av + 1, ac - 1, 1);
 435                 else if (strcmp(av[0], "mirror-write") == 0)
 436                         hammer_cmd_mirror_write(av + 1, ac - 1);
 437                 else if (strcmp(av[0], "mirror-copy") == 0)
 438                         hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
 439                 else if (strcmp(av[0], "mirror-stream") == 0)
 440                         hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
 441                 else if (strcmp(av[0], "mirror-dump") == 0)
 442                         hammer_cmd_mirror_dump();
 443                 else
 444                         usage(1);
 445                 exit(0);
 446         }
 447         if (strcmp(av[0], "dedup-simulate") == 0) {
 448                 hammer_cmd_dedup_simulate(av + 1, ac - 1);
 449                 exit(0);
 450         }
 451         if (strcmp(av[0], "dedup") == 0) {
 452                 hammer_cmd_dedup(av + 1, ac - 1);
 453                 exit(0);
 454         }
 455         if (strcmp(av[0], "version") == 0) {
 456                 hammer_cmd_get_version(av + 1, ac - 1);
 457                 exit(0);
 458         }
 459         if (strcmp(av[0], "version-upgrade") == 0) {
 460                 hammer_cmd_set_version(av + 1, ac - 1);
 461                 exit(0);
 462         }
 463         if (strcmp(av[0], "volume-add") == 0) {
 464                 hammer_cmd_volume_add(av + 1, ac - 1);
 465                 exit(0);
 466         }
 467         if (strcmp(av[0], "volume-del") == 0) {
 468                 hammer_cmd_volume_del(av + 1, ac - 1);
 469                 exit(0);
 470         }
 471         if (strcmp(av[0], "volume-list") == 0) {
 472                 hammer_cmd_volume_list(av + 1, ac - 1);
 473                 exit(0);
 474         }
 475
 476         uuid_name_lookup(&Hammer_FSType, "DragonFly HAMMER", &status);
 477         if (status != uuid_s_ok) {
 478                 errx(1, "uuids file does not have the DragonFly "
 479                         "HAMMER filesystem type");
 480         }
 481
 482         if (strcmp(av[0], "show") == 0) {
 483                 u_int32_t lo = 0;
 484                 intmax_t obj_id = (int64_t)HAMMER_MIN_OBJID;
 485
 486                 hammer_parsedevs(blkdevs);
 487                 if (ac > 1)
 488                         sscanf(av[1], "%08x:%jx", &lo, &obj_id);
 489                 hammer_cmd_show(-1, lo, (int64_t)obj_id, 0, NULL, NULL);
 490                 exit(0);
 491         }
 492         if (strcmp(av[0], "show-undo") == 0) {
 493                 hammer_parsedevs(blkdevs);
 494                 hammer_cmd_show_undo();
 495                 exit(0);
 496         }
 497         if (strcmp(av[0], "recover") == 0) {
 498                 hammer_parsedevs(blkdevs);
 499                 if (ac <= 1)
 500                         errx(1, "hammer recover required target directory");
 501                 hammer_cmd_recover(av[1]);
 502                 exit(0);
 503         }
 504         if (strcmp(av[0], "blockmap") == 0) {
 505                 hammer_parsedevs(blkdevs);
 506                 hammer_cmd_blockmap();
 507                 exit(0);
 508         }
 509         if (strcmp(av[0], "checkmap") == 0) {
 510                 hammer_parsedevs(blkdevs);
 511                 hammer_cmd_checkmap();
 512                 exit(0);
 513         }
 514         usage(1);
 515         /* not reached */
 516         return(0);
 517 }
 518
 519 /*
 520  * Parse the device specification.
 521  *
 522  * Multi-volume hammer devices are colon-separated.  Each element
 523  * may be further expanded via /etc/devtab.  One may also specify
 524  * a single element which is expanded into multiple elements via
 525  * /etc/devtab.
 526  */
 527 static
 528 void
 529 hammer_parsedevs(const char *blkdevs)
 530 {
 531         char *copy;
 532         char *volname;
 533
 534         if (blkdevs == NULL) {
 535                 errx(1, "A -f blkdevs specification is required "
 536                         "for this command");
 537         }
 538
 539         copy = strdup(blkdevs);
 540         while ((volname = copy) != NULL) {
 541                 if ((copy = strchr(copy, ':')) != NULL)
 542                         *copy++ = 0;
 543                 volname = getdevpath(volname, 0);
 544                 if (strchr(volname, ':'))
 545                         hammer_parsedevs(volname);
 546                 else
 547                         setup_volume(-1, volname, 0, O_RDONLY);
 548         }
 549 }
 550
 551 static
 552 void
 553 sigalrm(int signo __unused)
 554 {
 555         /* do nothing (interrupts HAMMER ioctl) */
 556 }
 557
 558 static
 559 void
 560 sigintr(int signo __unused)
 561 {
 562         if (RunningIoctl == 0)
 563                 _exit(1);
 564         DidInterrupt = 1;
 565         /* do nothing (interrupts HAMMER ioctl) */
 566 }
 567
 568 static
 569 void
 570 usage(int exit_code)
 571 {
 572         fprintf(stderr,
 573                 "hammer -h\n"
 574                 "hammer [-2BqrvXy] [-b bandwidth] [-C cachesize[:readahead]] [-c cyclefile]\n"
 575                 "       [-f blkdevs] [-i delay] [-t seconds] [-S splitup]\n"
 576                 "       command [argument ...]\n"
 577                 "hammer synctid <filesystem> [quick]\n"
 578                 "hammer bstats [interval]\n"
 579                 "hammer iostats [interval]\n"
 580                 "hammer history[@offset[,len]] <file> ...\n"
 581                 "hammer namekey1 <path>\n"
 582                 "hammer namekey2 <path>\n"
 583                 "hammer namekey32 <path>\n"
 584                 "hammer cleanup [<filesystem> ...]\n"
 585                 "hammer info\n"
 586                 "hammer snapshot [<filesystem>] <snapshot-dir>\n"
 587                 "hammer snapshot <filesystem> <snapshot-dir> [<note>]\n"
 588                 "hammer prune <softlink-dir>\n"
 589                 "hammer prune-everything <filesystem>\n"
 590                 "hammer rebalance <filesystem> [saturation_percentage]\n"
 591                 "hammer reblock[-btree|-inodes|-dirs|-data] "
 592                         "<filesystem> [fill_percentage]\n"
 593                 "hammer pfs-status <dirpath> ...\n"
 594                 "hammer pfs-master <dirpath> [options]\n"
 595                 "hammer pfs-slave <dirpath> [options]\n"
 596                 "hammer pfs-update <dirpath> [options]\n"
 597                 "hammer pfs-upgrade <dirpath>\n"
 598                 "hammer pfs-downgrade <dirpath>\n"
 599                 "hammer pfs-destroy <dirpath>\n"
 600                 "hammer mirror-read <filesystem> [begin-tid]\n"
 601                 "hammer mirror-read-stream <filesystem> [begin-tid]\n"
 602                 "hammer mirror-write <filesystem>\n"
 603                 "hammer mirror-dump\n"
 604                 "hammer mirror-copy [[user@]host:]<filesystem>"
 605                                   " [[user@]host:]<filesystem>\n"
 606                 "hammer mirror-stream [[user@]host:]<filesystem>"
 607                                     " [[user@]host:]<filesystem>\n"
 608                 "hammer version <filesystem>\n"
 609                 "hammer version-upgrade <filesystem> <version> [force]\n"
 610                 "hammer volume-add <device> <filesystem>\n"
 611                 "hammer volume-del <device> <filesystem>\n"
 612                 "hammer volume-list <filesystem>\n"
 613         );
 614
 615         fprintf(stderr, "\nHAMMER utility version 3+ commands:\n");
 616
 617         fprintf(stderr,
 618                 "hammer config [<filesystem> [<configfile>]]\n"
 619                 "hammer viconfig [<filesystem>]\n"
 620                 "hammer snap <path> [<note>]\n"
 621                 "hammer snaplo <path> [<note>]\n"
 622                 "hammer snapq <dir> [<note>]\n"
 623                 "hammer snaprm <path> ...\n"
 624                 "hammer snaprm <transid> ...\n"
 625                 "hammer snaprm <filesystem> <transid> ...\n"
 626                 "hammer snapls [<path> ...]\n"
 627         );
 628
 629         fprintf(stderr, "\nHAMMER utility version 4+ commands:\n");
 630
 631         fprintf(stderr,
 632                 "hammer -f blkdevs blockmap\n"
 633                 "hammer -f blkdevs checkmap\n"
 634                 "hammer -f blkdevs [-qqq] show [lo:objid]\n"
 635                 "hammer -f blkdevs show-undo\n"
 636                 "hammer -f blkdevs recover <target_dir>\n"
 637         );
 638
 639         fprintf(stderr, "\nHAMMER utility version 5+ commands:\n");
 640
 641         fprintf(stderr,
 642                 "hammer dedup-simulate <filesystem>\n"
 643                 "hammer dedup <filesystem>\n"
 644         );
 645
 646         exit(exit_code);
 647 }
 648