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