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);
  38 static void sigalrm(int signo);
  39 static void sigintr(int signo);
  40 static void usage(int exit_code);
  41
  42 int RecurseOpt;
  43 int VerboseOpt;
  44 int QuietOpt;
  45 int NoSyncOpt;
  46 int TwoWayPipeOpt;
  47 int TimeoutOpt;
  48 int DelayOpt = 5;
  49 char *SshPort;
  50 int ForceYesOpt;
  51 int CompressOpt;
  52 int ForceOpt;
  53 int RunningIoctl;
  54 int DidInterrupt;
  55 int BulkOpt;
  56 int AllPFS;
  57 uint64_t BandwidthOpt;
  58 uint64_t SplitupOpt = 4ULL * 1024ULL * 1024ULL * 1024ULL;
  59 uint64_t MemoryLimit = 1024LLU * 1024 * 1024;
  60 const char *SplitupOptStr;
  61 const char *CyclePath;
  62
  63 int
  64 main(int ac, char **av)
  65 {
  66         char *blkdevs = NULL;
  67         char *ptr;
  68         char *restrictcmd = NULL;
  69         uint32_t status;
  70         int ch;
  71         int cacheSize = 0;
  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                         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 'R':
 236                         if (restrictcmd == NULL)
 237                                 restrictcmd = optarg;
 238                         break;
 239                 case 'T':
 240                         if (RestrictTarget == NULL)
 241                                 RestrictTarget = optarg;
 242                         break;
 243                 case 'X':
 244                         CompressOpt = 1;
 245                         break;
 246                 default:
 247                         usage(1);
 248                         /* not reached */
 249                 }
 250         }
 251         ac -= optind;
 252         av += optind;
 253         if (ac < 1) {
 254                 usage(1);
 255                 /* not reached */
 256         }
 257
 258         signal(SIGALRM, sigalrm);
 259         signal(SIGINT, sigintr);
 260
 261         /*
 262          * Check command restriction (used by hammer ssh-remote).  Several
 263          * commands may be iterated with a comma.
 264          */
 265         if (restrictcmd) {
 266                 char *elm;
 267
 268                 ptr = strdup(restrictcmd);
 269                 while ((elm = strsep(&ptr, ",")) != NULL) {
 270                         if (strcmp(av[0], elm) == 0)
 271                                 break;
 272                 }
 273                 if (elm == NULL) {
 274                         fprintf(stderr, "hammer-remote: request does not match "
 275                                         "restricted command\n");
 276                         exit(1);
 277                 }
 278                 free(ptr);
 279         }
 280
 281         uuid_name_lookup(&Hammer_FSType, "DragonFly HAMMER", &status);
 282         if (status != uuid_s_ok) {
 283                 errx(1, "uuids file does not have the DragonFly "
 284                         "HAMMER filesystem type");
 285         }
 286
 287         /*
 288          * Parse commands
 289          */
 290         if (strcmp(av[0], "synctid") == 0) {
 291                 hammer_cmd_synctid(av + 1, ac - 1);
 292                 exit(0);
 293         }
 294         if (strcmp(av[0], "namekey2") == 0) {
 295                 int64_t key;
 296                 int32_t crcx;
 297                 int len;
 298                 const char *aname = av[1];
 299
 300                 if (aname == NULL)
 301                         usage(1);
 302                 len = strlen(aname);
 303                 key = (uint32_t)crc32(aname, len) & 0xFFFFFFFEU;
 304
 305                 switch(len) {
 306                 default:
 307                         crcx = crc32(aname + 3, len - 5);
 308                         crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
 309                         key |= (int64_t)(crcx & 0x3F) << 42;
 310                         /* fall through */
 311                 case 5:
 312                 case 4:
 313                         /* fall through */
 314                 case 3:
 315                         key |= ((int64_t)(aname[2] & 0x1F) << 48);
 316                         /* fall through */
 317                 case 2:
 318                         key |= ((int64_t)(aname[1] & 0x1F) << 53) |
 319                                ((int64_t)(aname[len-2] & 0x1F) << 37);
 320                         /* fall through */
 321                 case 1:
 322                         key |= ((int64_t)(aname[0] & 0x1F) << 58) |
 323                                ((int64_t)(aname[len-1] & 0x1F) << 32);
 324                         /* fall through */
 325                 case 0:
 326                         break;
 327                 }
 328                 if (key == 0)
 329                         key |= 0x100000000LL;
 330                 printf("0x%016jx\n", (uintmax_t)key);
 331                 exit(0);
 332         }
 333         if (strcmp(av[0], "namekey1") == 0) {
 334                 int64_t key;
 335
 336                 if (av[1] == NULL)
 337                         usage(1);
 338                 key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
 339                 if (key == 0)
 340                         key |= 0x100000000LL;
 341                 printf("0x%016jx\n", (uintmax_t)key);
 342                 exit(0);
 343         }
 344         if (strcmp(av[0], "namekey32") == 0) {
 345                 int32_t key;
 346
 347                 if (av[1] == NULL)
 348                         usage(1);
 349                 key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
 350                 if (key == 0)
 351                         ++key;
 352                 printf("0x%08x\n", key);
 353                 exit(0);
 354         }
 355         if (strcmp(av[0], "pfs-status") == 0) {
 356                 hammer_cmd_pseudofs_status(av + 1, ac - 1);
 357                 exit(0);
 358         }
 359         if (strcmp(av[0], "pfs-master") == 0) {
 360                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
 361                 exit(0);
 362         }
 363         if (strcmp(av[0], "pfs-slave") == 0) {
 364                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
 365                 exit(0);
 366         }
 367         if (strcmp(av[0], "pfs-update") == 0) {
 368                 hammer_cmd_pseudofs_update(av + 1, ac - 1);
 369                 exit(0);
 370         }
 371         if (strcmp(av[0], "pfs-upgrade") == 0) {
 372                 hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
 373                 exit(0);
 374         }
 375         if (strcmp(av[0], "pfs-downgrade") == 0) {
 376                 hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
 377                 exit(0);
 378         }
 379         if (strcmp(av[0], "pfs-destroy") == 0) {
 380                 hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
 381                 exit(0);
 382         }
 383         if (strcmp(av[0], "prune") == 0) {
 384                 hammer_cmd_softprune(av + 1, ac - 1, 0);
 385                 exit(0);
 386         }
 387         if (strcmp(av[0], "config") == 0) {
 388                 hammer_cmd_config(av + 1, ac - 1);
 389                 exit(0);
 390         }
 391         if (strcmp(av[0], "viconfig") == 0) {
 392                 hammer_cmd_viconfig(av + 1, ac - 1);
 393                 exit(0);
 394         }
 395         if (strcmp(av[0], "cleanup") == 0) {
 396                 hammer_cmd_cleanup(av + 1, ac - 1);
 397                 exit(0);
 398         }
 399         if (strcmp(av[0], "abort-cleanup") == 0) {
 400                 hammer_cmd_abort_cleanup(av + 1, ac - 1);
 401                 exit(0);
 402         }
 403         if (strcmp(av[0], "info") == 0) {
 404                 hammer_cmd_info(av + 1, ac - 1);
 405                 exit(0);
 406         }
 407         if (strcmp(av[0], "prune-everything") == 0) {
 408                 hammer_cmd_softprune(av + 1, ac - 1, 1);
 409                 exit(0);
 410         }
 411         if (strcmp(av[0], "ssh-remote") == 0) {
 412                 if (ac != 3)
 413                         usage(1);
 414                 hammer_cmd_sshremote(av[1], av[2]);
 415                 exit(0);
 416         }
 417         if (strcmp(av[0], "snap") == 0) {
 418                 hammer_cmd_snap(av + 1, ac - 1, 0, 1);
 419                 exit(0);
 420         }
 421         if (strcmp(av[0], "snaplo") == 0) {
 422                 hammer_cmd_snap(av + 1, ac - 1, 0, 0);
 423                 exit(0);
 424         }
 425         if (strcmp(av[0], "snapq") == 0) {
 426                 hammer_cmd_snap(av + 1, ac - 1, 1, 0);
 427                 exit(0);
 428         }
 429         if (strcmp(av[0], "snapls") == 0) {
 430                 hammer_cmd_snapls(av + 1, ac - 1);
 431                 exit(0);
 432         }
 433         if (strcmp(av[0], "snaprm") == 0) {
 434                 hammer_cmd_snaprm(av + 1, ac - 1);
 435                 exit(0);
 436         }
 437         if (strcmp(av[0], "snapshot") == 0) {
 438                 hammer_cmd_snapshot(av + 1, ac - 1);
 439                 exit(0);
 440         }
 441         if (strcmp(av[0], "bstats") == 0) {
 442                 hammer_cmd_bstats(av + 1, ac - 1);
 443                 exit(0);
 444         }
 445         if (strcmp(av[0], "iostats") == 0) {
 446                 hammer_cmd_iostats(av + 1, ac - 1);
 447                 exit(0);
 448         }
 449         if (strcmp(av[0], "stats") == 0) {
 450                 hammer_cmd_stats(av + 1, ac - 1);
 451                 exit(0);
 452         }
 453
 454         if (strncmp(av[0], "history", 7) == 0) {
 455                 hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
 456                 exit(0);
 457         }
 458         if (strcmp(av[0], "rebalance") == 0) {
 459                 signal(SIGINT, sigalrm);
 460                 hammer_cmd_rebalance(av + 1, ac - 1);
 461                 exit(0);
 462         }
 463         if (strncmp(av[0], "reblock", 7) == 0) {
 464                 signal(SIGINT, sigalrm);
 465                 if (strcmp(av[0], "reblock") == 0)
 466                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_FLAGS);
 467                 else if (strcmp(av[0], "reblock-btree") == 0)
 468                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
 469                 else if (strcmp(av[0], "reblock-inodes") == 0)
 470                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
 471                 else if (strcmp(av[0], "reblock-dirs") == 0)
 472                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
 473                 else if (strcmp(av[0], "reblock-data") == 0)
 474                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
 475                 else
 476                         usage(1);
 477                 exit(0);
 478         }
 479         if (strncmp(av[0], "mirror", 6) == 0) {
 480                 if (strcmp(av[0], "mirror-read") == 0)
 481                         hammer_cmd_mirror_read(av + 1, ac - 1, 0);
 482                 else if (strcmp(av[0], "mirror-read-stream") == 0)
 483                         hammer_cmd_mirror_read(av + 1, ac - 1, 1);
 484                 else if (strcmp(av[0], "mirror-write") == 0)
 485                         hammer_cmd_mirror_write(av + 1, ac - 1);
 486                 else if (strcmp(av[0], "mirror-copy") == 0)
 487                         hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
 488                 else if (strcmp(av[0], "mirror-stream") == 0)
 489                         hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
 490                 else if (strcmp(av[0], "mirror-dump") == 0)
 491                         hammer_cmd_mirror_dump(av + 1, ac - 1);
 492                 else
 493                         usage(1);
 494                 exit(0);
 495         }
 496         if (strcmp(av[0], "dedup-simulate") == 0) {
 497                 hammer_cmd_dedup_simulate(av + 1, ac - 1);
 498                 exit(0);
 499         }
 500         if (strcmp(av[0], "dedup") == 0) {
 501                 hammer_cmd_dedup(av + 1, ac - 1);
 502                 exit(0);
 503         }
 504         if (strcmp(av[0], "version") == 0) {
 505                 hammer_cmd_get_version(av + 1, ac - 1);
 506                 exit(0);
 507         }
 508         if (strcmp(av[0], "version-upgrade") == 0) {
 509                 hammer_cmd_set_version(av + 1, ac - 1);
 510                 exit(0);
 511         }
 512         if (strcmp(av[0], "volume-add") == 0) {
 513                 hammer_cmd_volume_add(av + 1, ac - 1);
 514                 exit(0);
 515         }
 516         if (strcmp(av[0], "volume-del") == 0) {
 517                 hammer_cmd_volume_del(av + 1, ac - 1);
 518                 exit(0);
 519         }
 520         if (strcmp(av[0], "volume-list") == 0) {
 521                 hammer_cmd_volume_list(av + 1, ac - 1);
 522                 exit(0);
 523         }
 524         if (strcmp(av[0], "volume-blkdevs") == 0) {
 525                 hammer_cmd_volume_blkdevs(av + 1, ac - 1);
 526                 exit(0);
 527         }
 528
 529         if (strcmp(av[0], "show") == 0) {
 530                 const char *arg = NULL;
 531                 int filter = -1;
 532                 int obfuscate = 0;
 533                 int indent = 0;
 534
 535                 hammer_parsedevs(blkdevs);
 536                 if (ac > 3)
 537                         errx(1, "Too many options specified");
 538                 if (ac > 1)
 539                         arg = av[1];
 540                 if (ac > 2) {
 541                         char *p, *buf = strdup(av[2]);
 542                         while((p = strsep(&buf, ",")) != NULL) {
 543                                 if (strcmp(p, "filter") == 0) {
 544                                         filter = 1;
 545                                 } else if (strcmp(p, "nofilter") == 0) {
 546                                         filter = 0;
 547                                 } else if (strcmp(p, "obfuscate") == 0) {
 548                                         obfuscate = 1;
 549                                 } else if (strcmp(p, "indent") == 0) {
 550                                         indent = 1;
 551                                 }
 552                         }
 553                         free(buf);
 554                 }
 555                 hammer_cmd_show(arg, filter, obfuscate, indent);
 556                 exit(0);
 557         }
 558         if (strcmp(av[0], "show-undo") == 0) {
 559                 hammer_parsedevs(blkdevs);
 560                 hammer_cmd_show_undo();
 561                 exit(0);
 562         }
 563         if (strcmp(av[0], "recover") == 0) {
 564                 hammer_parsedevs(blkdevs);
 565                 if (ac <= 1)
 566                         errx(1, "hammer recover required target directory");
 567                 hammer_cmd_recover(av[1]);
 568                 exit(0);
 569         }
 570         if (strcmp(av[0], "blockmap") == 0) {
 571                 hammer_parsedevs(blkdevs);
 572                 hammer_cmd_blockmap();
 573                 exit(0);
 574         }
 575         if (strcmp(av[0], "checkmap") == 0) {
 576                 hammer_parsedevs(blkdevs);
 577                 hammer_cmd_checkmap();
 578                 exit(0);
 579         }
 580         usage(1);
 581         /* not reached */
 582         return(0);
 583 }
 584
 585 /*
 586  * Parse the device specification.
 587  *
 588  * Multi-volume hammer devices are colon-separated.  Each element
 589  * may be further expanded via /etc/devtab.  One may also specify
 590  * a single element which is expanded into multiple elements via
 591  * /etc/devtab.
 592  */
 593 static
 594 void
 595 hammer_parsedevs(const char *blkdevs)
 596 {
 597         struct volume_info *vol = NULL;
 598         char *copy;
 599         char *volname;
 600         int volnum = 0;
 601
 602         if (blkdevs == NULL) {
 603                 errx(1, "A -f blkdevs specification is required "
 604                         "for this command");
 605         }
 606
 607         copy = strdup(blkdevs);
 608         while ((volname = copy) != NULL) {
 609                 if ((copy = strchr(copy, ':')) != NULL)
 610                         *copy++ = 0;
 611                 volname = getdevpath(volname, 0);
 612                 if (strchr(volname, ':'))
 613                         hammer_parsedevs(volname);
 614                 else {
 615                         vol = load_volume(volname, O_RDONLY);
 616                         assert(vol);
 617                         ++volnum;
 618                 }
 619                 free(volname);
 620         }
 621         free(copy);
 622
 623         /*
 624          * All volumes have the same vol_count.
 625          */
 626         assert(vol);
 627         if (volnum != vol->ondisk->vol_count)
 628                 errx(1, "Volume header says %d volumes, but %d specified.",
 629                         vol->ondisk->vol_count, volnum);
 630
 631         if (get_root_volume() == NULL)
 632                 errx(1, "No root volume found");
 633 }
 634
 635 static
 636 void
 637 sigalrm(int signo __unused)
 638 {
 639         /* do nothing (interrupts HAMMER ioctl) */
 640 }
 641
 642 static
 643 void
 644 sigintr(int signo __unused)
 645 {
 646         if (RunningIoctl == 0)
 647                 _exit(1);
 648         DidInterrupt = 1;
 649         /* do nothing (interrupts HAMMER ioctl) */
 650 }
 651
 652 static
 653 void
 654 usage(int exit_code)
 655 {
 656         fprintf(stderr,
 657                 "hammer -h\n"
 658                 "hammer [-2ABFqrvXy] [-b bandwidth] [-C cachesize[:readahead]] \n"
 659                 "       [-R restrictcmd] [-T restrictpath] [-c cyclefile]\n"
 660                 "       [-e scoreboardfile] [-f blkdevs] [-i delay] [-p ssh-port]\n"
 661                 "       [-S splitsize] [-t seconds] [-m memlimit] command [argument ...]\n"
 662                 "hammer synctid <filesystem> [quick]\n"
 663                 "hammer bstats [interval]\n"
 664                 "hammer iostats [interval]\n"
 665                 "hammer stats [interval]\n"
 666                 "hammer history[@offset[,len]] <file> ...\n"
 667                 "hammer namekey1 <path>\n"
 668                 "hammer namekey2 <path>\n"
 669                 "hammer namekey32 <path>\n"
 670                 "hammer cleanup [<filesystem> ...]\n"
 671                 "hammer abort-cleanup\n"
 672                 "hammer info [<dirpath> ...]\n"
 673                 "hammer snapshot [<filesystem>] <snapshot-dir>\n"
 674                 "hammer snapshot <filesystem> <snapshot-dir> [<note>]\n"
 675                 "hammer prune <softlink-dir>\n"
 676                 "hammer prune-everything <filesystem>\n"
 677                 "hammer rebalance <filesystem> [saturation_percentage]\n"
 678                 "hammer reblock[-btree|-inodes|-dirs|-data] "
 679                         "<filesystem> [fill_percentage]\n"
 680                 "hammer pfs-status <dirpath> ...\n"
 681                 "hammer pfs-master <dirpath> [options]\n"
 682                 "hammer pfs-slave <dirpath> [options]\n"
 683                 "hammer pfs-update <dirpath> [options]\n"
 684                 "hammer pfs-upgrade <dirpath>\n"
 685                 "hammer pfs-downgrade <dirpath>\n"
 686                 "hammer pfs-destroy <dirpath>\n"
 687                 "hammer mirror-read <filesystem> [begin-tid]\n"
 688                 "hammer mirror-read-stream <filesystem> [begin-tid]\n"
 689                 "hammer mirror-write <filesystem>\n"
 690                 "hammer mirror-dump [header]\n"
 691                 "hammer mirror-copy [[user@]host:]<filesystem>"
 692                                   " [[user@]host:]<filesystem>\n"
 693                 "hammer mirror-stream [[user@]host:]<filesystem>"
 694                                     " [[user@]host:]<filesystem>\n"
 695                 "hammer ssh-remote command filesystem\n"
 696                 "hammer version <filesystem>\n"
 697                 "hammer version-upgrade <filesystem> <version> [force]\n"
 698                 "hammer volume-add <device> <filesystem>\n"
 699                 "hammer volume-del <device> <filesystem>\n"
 700                 "hammer volume-list <filesystem>\n"
 701                 "hammer volume-blkdevs <filesystem>\n"
 702         );
 703
 704         fprintf(stderr, "\nHAMMER utility version 3+ commands:\n");
 705
 706         fprintf(stderr,
 707                 "hammer config [<filesystem> [<configfile>]]\n"
 708                 "hammer viconfig [<filesystem>]\n"
 709                 "hammer snap <path> [<note>]\n"
 710                 "hammer snaplo <path> [<note>]\n"
 711                 "hammer snapq <dir> [<note>]\n"
 712                 "hammer snaprm <path> ...\n"
 713                 "hammer snaprm <transid> ...\n"
 714                 "hammer snaprm <filesystem> <transid> ...\n"
 715                 "hammer snapls [<path> ...]\n"
 716         );
 717
 718         fprintf(stderr, "\nHAMMER utility version 4+ commands:\n");
 719
 720         fprintf(stderr,
 721                 "hammer -f blkdevs blockmap\n"
 722                 "hammer -f blkdevs checkmap\n"
 723                 "hammer -f blkdevs [-qqq] show [lo:objid]\n"
 724                 "hammer -f blkdevs show-undo\n"
 725                 "hammer -f blkdevs recover <target_dir>\n"
 726         );
 727
 728         fprintf(stderr, "\nHAMMER utility version 5+ commands:\n");
 729
 730         fprintf(stderr,
 731                 "hammer dedup-simulate <filesystem>\n"
 732                 "hammer dedup <filesystem>\n"
 733         );
 734
 735         exit(exit_code);
 736 }
 737