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                                 /* not reached */
 103                         }
 104                         break;
 105                 case 'S':
 106                         SplitupOptStr = strdup(optarg);
 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                                 /* not reached */
 127                         }
 128                         break;
 129                 case 'c':
 130                         CyclePath = optarg;
 131                         break;
 132                 case 'd':
 133                         ++DebugOpt;
 134                         break;
 135                 case 'e':
 136                         ScoreBoardFile = optarg;
 137                         break;
 138                 case 'h':
 139                         usage(0);
 140                         /* not reached */
 141                 case 'i':
 142                         DelayOpt = strtol(optarg, NULL, 0);
 143                         break;
 144                 case 'm':
 145                         MemoryLimit = strtouq(optarg, &ptr, 0);
 146                         switch(*ptr) {
 147                         case 't':
 148                         case 'T':
 149                                 MemoryLimit *= 1024;
 150                                 /* fall through */
 151                         case 'g':
 152                         case 'G':
 153                                 MemoryLimit *= 1024;
 154                                 /* fall through */
 155                         case 'm':
 156                         case 'M':
 157                                 MemoryLimit *= 1024;
 158                                 /* fall through */
 159                         case 'k':
 160                         case 'K':
 161                                 MemoryLimit *= 1024;
 162                                 /* fall through */
 163                         default:
 164                                 break;
 165                         }
 166
 167                         /* minimum limit */
 168                         if (MemoryLimit < 1024 * 1024)
 169                                 MemoryLimit = 1024 * 1024;
 170                         break;
 171                 case 'p':
 172                         SshPort = optarg;
 173                         break;
 174                 case 'r':
 175                         RecurseOpt = 1;
 176                         break;
 177                 case 'f':
 178                         blkdevs = optarg;
 179                         break;
 180                 case 't':
 181                         TimeoutOpt = strtol(optarg, NULL, 0);
 182                         break;
 183                 case 'v':
 184                         if (QuietOpt > 0)
 185                                 --QuietOpt;
 186                         else
 187                                 ++VerboseOpt;
 188                         break;
 189                 case 'q':
 190                         if (VerboseOpt > 0)
 191                                 --VerboseOpt;
 192                         else
 193                                 ++QuietOpt;
 194                         break;
 195                 case 'A':
 196                         AllPFS = 1;
 197                         break;
 198                 case 'B':
 199                         BulkOpt = 1;
 200                         break;
 201                 case 'C':
 202                         if (hammer_parse_cache_size(optarg) == -1) {
 203                                 usage(1);
 204                                 /* not reached */
 205                         }
 206                         break;
 207                 case 'F':
 208                         ForceOpt = 1;
 209                         break;
 210                 case 'R':
 211                         if (restrictcmd == NULL)
 212                                 restrictcmd = optarg;
 213                         break;
 214                 case 'T':
 215                         if (RestrictTarget == NULL)
 216                                 RestrictTarget = optarg;
 217                         break;
 218                 case 'X':
 219                         CompressOpt = 1;
 220                         break;
 221                 default:
 222                         usage(1);
 223                         /* not reached */
 224                 }
 225         }
 226         ac -= optind;
 227         av += optind;
 228         if (ac < 1) {
 229                 usage(1);
 230                 /* not reached */
 231         }
 232
 233         signal(SIGALRM, sigalrm);
 234         signal(SIGINT, sigintr);
 235
 236         /*
 237          * Check command restriction (used by hammer ssh-remote).  Several
 238          * commands may be iterated with a comma.
 239          */
 240         if (restrictcmd) {
 241                 char *elm, *dup;
 242
 243                 dup = ptr = strdup(restrictcmd);
 244                 while ((elm = strsep(&ptr, ",")) != NULL) {
 245                         if (strcmp(av[0], elm) == 0)
 246                                 break;
 247                 }
 248                 if (elm == NULL) {
 249                         errx(1, "hammer-remote: request does not match "
 250                                 "restricted command");
 251                         /* not reached */
 252                 }
 253                 free(dup);
 254         }
 255
 256         /*
 257          * Lookup the filesystem type
 258          */
 259         uuid_name_lookup(&Hammer_FSType, HAMMER_FSTYPE_STRING, &status);
 260         if (status != uuid_s_ok) {
 261                 errx(1, "uuids file does not have the DragonFly "
 262                         "HAMMER filesystem type");
 263                 /* not reached */
 264         }
 265
 266         /*
 267          * Parse commands
 268          */
 269         if (strcmp(av[0], "synctid") == 0) {
 270                 hammer_cmd_synctid(av + 1, ac - 1);
 271                 exit(0);
 272         }
 273         if (strcmp(av[0], "namekey2") == 0) {
 274                 int64_t key;
 275                 int32_t crcx;
 276                 int len;
 277                 const char *aname = av[1];
 278
 279                 if (aname == NULL) {
 280                         usage(1);
 281                         /* not reached */
 282                 }
 283                 len = strlen(aname);
 284                 key = (uint32_t)crc32(aname, len) & 0xFFFFFFFEU;
 285
 286                 switch(len) {
 287                 default:
 288                         crcx = crc32(aname + 3, len - 5);
 289                         crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
 290                         key |= (int64_t)(crcx & 0x3F) << 42;
 291                         /* fall through */
 292                 case 5:
 293                 case 4:
 294                         /* fall through */
 295                 case 3:
 296                         key |= ((int64_t)(aname[2] & 0x1F) << 48);
 297                         /* fall through */
 298                 case 2:
 299                         key |= ((int64_t)(aname[1] & 0x1F) << 53) |
 300                                ((int64_t)(aname[len-2] & 0x1F) << 37);
 301                         /* fall through */
 302                 case 1:
 303                         key |= ((int64_t)(aname[0] & 0x1F) << 58) |
 304                                ((int64_t)(aname[len-1] & 0x1F) << 32);
 305                         /* fall through */
 306                 case 0:
 307                         break;
 308                 }
 309                 if (key == 0)
 310                         key |= 0x100000000LL;
 311                 printf("0x%016jx\n", (uintmax_t)key);
 312                 exit(0);
 313         }
 314         if (strcmp(av[0], "namekey1") == 0) {
 315                 int64_t key;
 316
 317                 if (av[1] == NULL) {
 318                         usage(1);
 319                         /* not reached */
 320                 }
 321                 key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
 322                 if (key == 0)
 323                         key |= 0x100000000LL;
 324                 printf("0x%016jx\n", (uintmax_t)key);
 325                 exit(0);
 326         }
 327         if (strcmp(av[0], "namekey32") == 0) {
 328                 int32_t key;
 329
 330                 if (av[1] == NULL) {
 331                         usage(1);
 332                         /* not reached */
 333                 }
 334                 key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
 335                 if (key == 0)
 336                         ++key;
 337                 printf("0x%08x\n", key);
 338                 exit(0);
 339         }
 340         if (strcmp(av[0], "pfs-status") == 0) {
 341                 hammer_cmd_pseudofs_status(av + 1, ac - 1);
 342                 exit(0);
 343         }
 344         if (strcmp(av[0], "pfs-master") == 0) {
 345                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
 346                 exit(0);
 347         }
 348         if (strcmp(av[0], "pfs-slave") == 0) {
 349                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
 350                 exit(0);
 351         }
 352         if (strcmp(av[0], "pfs-update") == 0) {
 353                 hammer_cmd_pseudofs_update(av + 1, ac - 1);
 354                 exit(0);
 355         }
 356         if (strcmp(av[0], "pfs-upgrade") == 0) {
 357                 hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
 358                 exit(0);
 359         }
 360         if (strcmp(av[0], "pfs-downgrade") == 0) {
 361                 hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
 362                 exit(0);
 363         }
 364         if (strcmp(av[0], "pfs-destroy") == 0) {
 365                 hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
 366                 exit(0);
 367         }
 368         if (strcmp(av[0], "prune") == 0) {
 369                 hammer_cmd_softprune(av + 1, ac - 1, 0);
 370                 exit(0);
 371         }
 372         if (strcmp(av[0], "config") == 0) {
 373                 hammer_cmd_config(av + 1, ac - 1);
 374                 exit(0);
 375         }
 376         if (strcmp(av[0], "viconfig") == 0) {
 377                 hammer_cmd_viconfig(av + 1, ac - 1);
 378                 exit(0);
 379         }
 380         if (strcmp(av[0], "cleanup") == 0) {
 381                 hammer_cmd_cleanup(av + 1, ac - 1);
 382                 exit(0);
 383         }
 384         if (strcmp(av[0], "abort-cleanup") == 0) {
 385                 hammer_cmd_abort_cleanup(av + 1, ac - 1);
 386                 exit(0);
 387         }
 388         if (strcmp(av[0], "info") == 0) {
 389                 hammer_cmd_info(av + 1, ac - 1);
 390                 exit(0);
 391         }
 392         if (strcmp(av[0], "prune-everything") == 0) {
 393                 hammer_cmd_softprune(av + 1, ac - 1, 1);
 394                 exit(0);
 395         }
 396         if (strcmp(av[0], "ssh-remote") == 0) {
 397                 if (ac != 3) {
 398                         usage(1);
 399                         /* not reached */
 400                 }
 401                 hammer_cmd_sshremote(av[1], av[2]);
 402                 exit(0);
 403         }
 404         if (strcmp(av[0], "snap") == 0) {
 405                 hammer_cmd_snap(av + 1, ac - 1, 0, 1);
 406                 exit(0);
 407         }
 408         if (strcmp(av[0], "snaplo") == 0) {
 409                 hammer_cmd_snap(av + 1, ac - 1, 0, 0);
 410                 exit(0);
 411         }
 412         if (strcmp(av[0], "snapq") == 0) {
 413                 hammer_cmd_snap(av + 1, ac - 1, 1, 0);
 414                 exit(0);
 415         }
 416         if (strcmp(av[0], "snapls") == 0) {
 417                 hammer_cmd_snapls(av + 1, ac - 1);
 418                 exit(0);
 419         }
 420         if (strcmp(av[0], "snaprm") == 0) {
 421                 hammer_cmd_snaprm(av + 1, ac - 1);
 422                 exit(0);
 423         }
 424         if (strcmp(av[0], "snapshot") == 0) {
 425                 hammer_cmd_snapshot(av + 1, ac - 1);
 426                 exit(0);
 427         }
 428         if (strcmp(av[0], "bstats") == 0) {
 429                 hammer_cmd_bstats(av + 1, ac - 1);
 430                 exit(0);
 431         }
 432         if (strcmp(av[0], "iostats") == 0) {
 433                 hammer_cmd_iostats(av + 1, ac - 1);
 434                 exit(0);
 435         }
 436         if (strcmp(av[0], "stats") == 0) {
 437                 hammer_cmd_stats(av + 1, ac - 1);
 438                 exit(0);
 439         }
 440
 441         if (strncmp(av[0], "history", 7) == 0) {
 442                 hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
 443                 exit(0);
 444         }
 445         if (strcmp(av[0], "rebalance") == 0) {
 446                 signal(SIGINT, sigalrm);
 447                 hammer_cmd_rebalance(av + 1, ac - 1);
 448                 exit(0);
 449         }
 450         if (strncmp(av[0], "reblock", 7) == 0) {
 451                 signal(SIGINT, sigalrm);
 452                 if (strcmp(av[0], "reblock") == 0)
 453                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_FLAGS);
 454                 else if (strcmp(av[0], "reblock-btree") == 0)
 455                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
 456                 else if (strcmp(av[0], "reblock-inodes") == 0)
 457                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
 458                 else if (strcmp(av[0], "reblock-dirs") == 0)
 459                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
 460                 else if (strcmp(av[0], "reblock-data") == 0)
 461                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
 462                 else {
 463                         usage(1);
 464                         /* not reached */
 465                 }
 466                 exit(0);
 467         }
 468         if (strncmp(av[0], "mirror", 6) == 0) {
 469                 if (strcmp(av[0], "mirror-read") == 0)
 470                         hammer_cmd_mirror_read(av + 1, ac - 1, 0);
 471                 else if (strcmp(av[0], "mirror-read-stream") == 0)
 472                         hammer_cmd_mirror_read(av + 1, ac - 1, 1);
 473                 else if (strcmp(av[0], "mirror-write") == 0)
 474                         hammer_cmd_mirror_write(av + 1, ac - 1);
 475                 else if (strcmp(av[0], "mirror-copy") == 0)
 476                         hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
 477                 else if (strcmp(av[0], "mirror-stream") == 0)
 478                         hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
 479                 else if (strcmp(av[0], "mirror-dump") == 0)
 480                         hammer_cmd_mirror_dump(av + 1, ac - 1);
 481                 else {
 482                         usage(1);
 483                         /* not reached */
 484                 }
 485                 exit(0);
 486         }
 487         if (strcmp(av[0], "dedup-simulate") == 0) {
 488                 hammer_cmd_dedup_simulate(av + 1, ac - 1);
 489                 exit(0);
 490         }
 491         if (strcmp(av[0], "dedup") == 0) {
 492                 hammer_cmd_dedup(av + 1, ac - 1);
 493                 exit(0);
 494         }
 495         if (strcmp(av[0], "version") == 0) {
 496                 hammer_cmd_get_version(av + 1, ac - 1);
 497                 exit(0);
 498         }
 499         if (strcmp(av[0], "version-upgrade") == 0) {
 500                 hammer_cmd_set_version(av + 1, ac - 1);
 501                 exit(0);
 502         }
 503         if (strcmp(av[0], "volume-add") == 0) {
 504                 hammer_cmd_volume_add(av + 1, ac - 1);
 505                 exit(0);
 506         }
 507         if (strcmp(av[0], "volume-del") == 0) {
 508                 hammer_cmd_volume_del(av + 1, ac - 1);
 509                 exit(0);
 510         }
 511         if (strcmp(av[0], "volume-list") == 0) {
 512                 hammer_cmd_volume_list(av + 1, ac - 1);
 513                 exit(0);
 514         }
 515         if (strcmp(av[0], "volume-blkdevs") == 0) {
 516                 hammer_cmd_volume_blkdevs(av + 1, ac - 1);
 517                 exit(0);
 518         }
 519
 520         if (strcmp(av[0], "show") == 0) {
 521                 const char *arg = NULL;
 522                 char *p, *dup;
 523                 int filter = -1;
 524                 int obfuscate = 0;
 525                 int indent = 0;
 526
 527                 hammer_parsedevs(blkdevs, O_RDONLY);
 528                 if (ac > 3) {
 529                         errx(1, "Too many options specified");
 530                         /* not reached */
 531                 }
 532                 if (ac > 1)
 533                         arg = av[1];
 534                 if (ac > 2) {
 535                         dup = ptr = strdup(av[2]);
 536                         while ((p = strsep(&ptr, ",")) != NULL) {
 537                                 if (strcmp(p, "filter") == 0)
 538                                         filter = 1;
 539                                 else if (strcmp(p, "nofilter") == 0)
 540                                         filter = 0;
 541                                 else if (strcmp(p, "obfuscate") == 0)
 542                                         obfuscate = 1;
 543                                 else if (strcmp(p, "indent") == 0)
 544                                         indent = 1;
 545                         }
 546                         free(dup);
 547                 }
 548                 hammer_cmd_show(arg, filter, obfuscate, indent);
 549                 exit(0);
 550         }
 551         if (strcmp(av[0], "show-undo") == 0) {
 552                 hammer_parsedevs(blkdevs, O_RDONLY);
 553                 hammer_cmd_show_undo();
 554                 exit(0);
 555         }
 556         if (strcmp(av[0], "recover") == 0) {
 557                 hammer_parsedevs_noverify(blkdevs, O_RDONLY);
 558                 hammer_cmd_recover(av + 1, ac - 1);
 559                 exit(0);
 560         }
 561         if (strcmp(av[0], "blockmap") == 0) {
 562                 hammer_parsedevs(blkdevs, O_RDONLY);
 563                 hammer_cmd_blockmap();
 564                 exit(0);
 565         }
 566         if (strcmp(av[0], "checkmap") == 0) {
 567                 hammer_parsedevs(blkdevs, O_RDONLY);
 568                 hammer_cmd_checkmap();
 569                 exit(0);
 570         }
 571         if (strcmp(av[0], "strip") == 0) {
 572                 hammer_parsedevs(blkdevs, O_RDWR);
 573                 hammer_cmd_strip();
 574                 exit(0);
 575         }
 576
 577         usage(1);
 578         /* not reached */
 579         return(0);
 580 }
 581
 582 /*
 583  * Parse the device specification.
 584  *
 585  * Multi-volume hammer devices are colon-separated.  Each element
 586  * may be further expanded via /etc/devtab.  One may also specify
 587  * a single element which is expanded into multiple elements via
 588  * /etc/devtab.
 589  */
 590 static
 591 void
 592 __hammer_parsedevs(const char *blkdevs, int oflags, int verify)
 593 {
 594         struct volume_info *volume = NULL;
 595         char *copy;
 596         char *volname;
 597         int volnum = 0;
 598
 599         if (blkdevs == NULL) {
 600                 errx(1, "A -f blkdevs specification is required "
 601                         "for this command");
 602                 /* not reached */
 603         }
 604
 605         copy = strdup(blkdevs);
 606         while ((volname = copy) != NULL) {
 607                 if ((copy = strchr(copy, ':')) != NULL)
 608                         *copy++ = 0;
 609                 volname = getdevpath(volname, 0);
 610                 if (strchr(volname, ':')) {
 611                         __hammer_parsedevs(volname, oflags, verify);
 612                 } else {
 613                         volume = load_volume(volname, oflags, verify);
 614                         assert(volume);
 615                         ++volnum;
 616                 }
 617                 free(volname);
 618         }
 619         free(copy);
 620
 621         /*
 622          * All volumes have the same vol_count.
 623          */
 624         assert(volume);
 625         if (volnum != volume->ondisk->vol_count) {
 626                 errx(1, "Volume header says %d volumes, but %d specified.",
 627                         volume->ondisk->vol_count, volnum);
 628                 /* not reached */
 629         }
 630
 631         if (get_root_volume() == NULL) {
 632                 errx(1, "No root volume found");
 633                 /* not reached */
 634         }
 635 }
 636
 637 static __inline
 638 void
 639 hammer_parsedevs(const char *blkdevs, int oflags)
 640 {
 641         __hammer_parsedevs(blkdevs, oflags, 1);
 642 }
 643
 644 static __inline
 645 void
 646 hammer_parsedevs_noverify(const char *blkdevs, int oflags)
 647 {
 648         __hammer_parsedevs(blkdevs, oflags, 0);
 649 }
 650
 651 static
 652 void
 653 sigalrm(int signo __unused)
 654 {
 655         /* do nothing (interrupts HAMMER ioctl) */
 656 }
 657
 658 static
 659 void
 660 sigintr(int signo __unused)
 661 {
 662         if (RunningIoctl == 0)
 663                 _exit(1);
 664         DidInterrupt = 1;
 665         /* do nothing (interrupts HAMMER ioctl) */
 666 }
 667
 668 static
 669 void
 670 usage(int exit_code)
 671 {
 672         fprintf(stderr,
 673                 "hammer -h\n"
 674                 "hammer [-2ABFqrvXy] [-b bandwidth] [-C cachesize[:readahead]] \n"
 675                 "       [-R restrictcmd] [-T restrictpath] [-c cyclefile]\n"
 676                 "       [-e scoreboardfile] [-f blkdevs] [-i delay] [-p ssh-port]\n"
 677                 "       [-S splitsize] [-t seconds] [-m memlimit] command [argument ...]\n"
 678                 "hammer synctid <filesystem> [quick]\n"
 679                 "hammer bstats [interval]\n"
 680                 "hammer iostats [interval]\n"
 681                 "hammer stats [interval]\n"
 682                 "hammer history[@offset[,len]] <file> ...\n"
 683                 "hammer namekey1 <path>\n"
 684                 "hammer namekey2 <path>\n"
 685                 "hammer namekey32 <path>\n"
 686                 "hammer cleanup [<filesystem> ...]\n"
 687                 "hammer abort-cleanup\n"
 688                 "hammer info [<dirpath> ...]\n"
 689                 "hammer snapshot [<filesystem>] <snapshot-dir>\n"
 690                 "hammer snapshot <filesystem> <snapshot-dir> [<note>]\n"
 691                 "hammer prune <softlink-dir>\n"
 692                 "hammer prune-everything <filesystem>\n"
 693                 "hammer rebalance <filesystem> [saturation_percentage]\n"
 694                 "hammer reblock[-btree|-inodes|-dirs|-data] "
 695                         "<filesystem> [fill_percentage]\n"
 696                 "hammer pfs-status <dirpath> ...\n"
 697                 "hammer pfs-master <dirpath> [options]\n"
 698                 "hammer pfs-slave <dirpath> [options]\n"
 699                 "hammer pfs-update <dirpath> [options]\n"
 700                 "hammer pfs-upgrade <dirpath>\n"
 701                 "hammer pfs-downgrade <dirpath>\n"
 702                 "hammer pfs-destroy <dirpath>\n"
 703                 "hammer mirror-read <filesystem> [begin-tid]\n"
 704                 "hammer mirror-read-stream <filesystem> [begin-tid]\n"
 705                 "hammer mirror-write <filesystem>\n"
 706                 "hammer mirror-dump [header]\n"
 707                 "hammer mirror-copy [[user@]host:]<filesystem>"
 708                                   " [[user@]host:]<filesystem>\n"
 709                 "hammer mirror-stream [[user@]host:]<filesystem>"
 710                                     " [[user@]host:]<filesystem>\n"
 711                 "hammer ssh-remote command filesystem\n"
 712                 "hammer version <filesystem>\n"
 713                 "hammer version-upgrade <filesystem> <version> [force]\n"
 714                 "hammer volume-add <device> <filesystem>\n"
 715                 "hammer volume-del <device> <filesystem>\n"
 716                 "hammer volume-list <filesystem>\n"
 717                 "hammer volume-blkdevs <filesystem>\n"
 718         );
 719
 720         fprintf(stderr, "\nHAMMER utility version 3+ commands:\n");
 721
 722         fprintf(stderr,
 723                 "hammer config [<filesystem> [<configfile>]]\n"
 724                 "hammer viconfig [<filesystem>]\n"
 725                 "hammer snap <path> [<note>]\n"
 726                 "hammer snaplo <path> [<note>]\n"
 727                 "hammer snapq <dir> [<note>]\n"
 728                 "hammer snaprm <path> ...\n"
 729                 "hammer snaprm <transid> ...\n"
 730                 "hammer snaprm <filesystem> <transid> ...\n"
 731                 "hammer snapls [<path> ...]\n"
 732         );
 733
 734         fprintf(stderr, "\nHAMMER utility version 4+ commands:\n");
 735
 736         fprintf(stderr,
 737                 "hammer -f blkdevs blockmap\n"
 738                 "hammer -f blkdevs checkmap\n"
 739                 "hammer -f blkdevs [-qqq] show [lo:objid]\n"
 740                 "hammer -f blkdevs show-undo\n"
 741                 "hammer -f blkdevs recover <target_dir> [full|quick]\n"
 742                 "hammer -f blkdevs strip\n"
 743         );
 744
 745         fprintf(stderr, "\nHAMMER utility version 5+ commands:\n");
 746
 747         fprintf(stderr,
 748                 "hammer dedup-simulate <filesystem>\n"
 749                 "hammer dedup <filesystem>\n"
 750         );
 751
 752         exit(exit_code);
 753 }
 754