sbin/hammer/hammer.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sbin/hammer/hammer.c,v 1.44 2008/11/13 02:04:27 dillon Exp $
  35  */
  36
  37 #include "hammer.h"
  38 #include <signal.h>
  39 #include <math.h>
  40 #include <fstab.h>
  41
  42 static void hammer_parsedevs(const char *blkdevs);
  43 static void sigalrm(int signo);
  44 static void sigintr(int signo);
  45 static void usage(int exit_code);
  46
  47 int RecurseOpt;
  48 int VerboseOpt;
  49 int QuietOpt;
  50 int NoSyncOpt;
  51 int TwoWayPipeOpt;
  52 int TimeoutOpt;
  53 int DelayOpt = 5;
  54 int ForceYesOpt = 0;
  55 int ForceOpt;
  56 int RunningIoctl;
  57 int DidInterrupt;
  58 int BulkOpt;
  59 u_int64_t BandwidthOpt;
  60 const char *CyclePath;
  61 const char *LinkPath;
  62
  63 int
  64 main(int ac, char **av)
  65 {
  66         char *blkdevs = NULL;
  67         char *ptr;
  68         u_int32_t status;
  69         int ch;
  70         int cacheSize = 0;
  71
  72         while ((ch = getopt(ac, av, "b:c:dhf:i:qrs:t:v2yBC:F")) != -1) {
  73                 switch(ch) {
  74                 case '2':
  75                         TwoWayPipeOpt = 1;
  76                         break;
  77                 case 'y':
  78                         ForceYesOpt = 1;
  79                         break;
  80                 case 'b':
  81                         BandwidthOpt = strtoull(optarg, &ptr, 0);
  82                         switch(*ptr) {
  83                         case 'g':
  84                         case 'G':
  85                                 BandwidthOpt *= 1024;
  86                                 /* fall through */
  87                         case 'm':
  88                         case 'M':
  89                                 BandwidthOpt *= 1024;
  90                                 /* fall through */
  91                         case 'k':
  92                         case 'K':
  93                                 BandwidthOpt *= 1024;
  94                                 break;
  95                         case '\0':
  96                                 /* bytes per second if no suffix */
  97                                 break;
  98                         default:
  99                                 usage(1);
 100                         }
 101                         break;
 102                 case 'c':
 103                         CyclePath = optarg;
 104                         break;
 105                 case 'd':
 106                         ++DebugOpt;
 107                         break;
 108                 case 'h':
 109                         usage(0);
 110                         /* not reached */
 111                 case 'i':
 112                         DelayOpt = strtol(optarg, NULL, 0);
 113                         break;
 114                 case 'r':
 115                         RecurseOpt = 1;
 116                         break;
 117                 case 'f':
 118                         blkdevs = optarg;
 119                         break;
 120                 case 's':
 121                         LinkPath = optarg;
 122                         break;
 123                 case 't':
 124                         TimeoutOpt = strtol(optarg, NULL, 0);
 125                         break;
 126                 case 'v':
 127                         if (QuietOpt > 0)
 128                                 --QuietOpt;
 129                         else
 130                                 ++VerboseOpt;
 131                         break;
 132                 case 'q':
 133                         if (VerboseOpt > 0)
 134                                 --VerboseOpt;
 135                         else
 136                                 ++QuietOpt;
 137                         break;
 138                 case 'B':
 139                         BulkOpt = 1;
 140                         break;
 141                 case 'C':
 142                         cacheSize = strtol(optarg, &ptr, 0);
 143                         switch(*ptr) {
 144                         case 'm':
 145                         case 'M':
 146                                 cacheSize *= 1024;
 147                                 /* fall through */
 148                         case 'k':
 149                         case 'K':
 150                                 cacheSize *= 1024;
 151                                 ++ptr;
 152                                 break;
 153                         case '\0':
 154                         case ':':
 155                                 /* bytes if no suffix */
 156                                 break;
 157                         default:
 158                                 usage(1);
 159                         }
 160                         if (*ptr == ':') {
 161                                 UseReadAhead = strtol(ptr + 1, NULL, 0);
 162                                 UseReadBehind = -UseReadAhead;
 163                         }
 164                         if (cacheSize < 1024 * 1024)
 165                                 cacheSize = 1024 * 1024;
 166                         if (UseReadAhead < 0)
 167                                 usage(1);
 168                         if (UseReadAhead * HAMMER_BUFSIZE / cacheSize / 16) {
 169                                 UseReadAhead = cacheSize / 16 / HAMMER_BUFSIZE;
 170                                 UseReadBehind = -UseReadAhead;
 171                         }
 172                         hammer_cache_set(cacheSize);
 173                         break;
 174                 case 'F':
 175                         ForceOpt = 1;
 176                         break;
 177                 default:
 178                         usage(1);
 179                         /* not reached */
 180                 }
 181         }
 182         ac -= optind;
 183         av += optind;
 184         if (ac < 1) {
 185                 usage(1);
 186                 /* not reached */
 187         }
 188
 189         signal(SIGALRM, sigalrm);
 190         signal(SIGINT, sigintr);
 191
 192         if (strcmp(av[0], "synctid") == 0) {
 193                 hammer_cmd_synctid(av + 1, ac - 1);
 194                 exit(0);
 195         }
 196         if (strcmp(av[0], "namekey2") == 0) {
 197                 int64_t key;
 198                 int32_t crcx;
 199                 int len;
 200                 const char *aname = av[1];
 201
 202                 if (aname == NULL)
 203                         usage(1);
 204                 len = strlen(aname);
 205                 key = (u_int32_t)crc32(aname, len) & 0xFFFFFFFEU;
 206
 207                 switch(len) {
 208                 default:
 209                         crcx = crc32(aname + 3, len - 5);
 210                         crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
 211                         key |= (int64_t)(crcx & 0x3F) << 42;
 212                         /* fall through */
 213                 case 5:
 214                 case 4:
 215                         /* fall through */
 216                 case 3:
 217                         key |= ((int64_t)(aname[2] & 0x1F) << 48);
 218                         /* fall through */
 219                 case 2:
 220                         key |= ((int64_t)(aname[1] & 0x1F) << 53) |
 221                                ((int64_t)(aname[len-2] & 0x1F) << 37);
 222                         /* fall through */
 223                 case 1:
 224                         key |= ((int64_t)(aname[0] & 0x1F) << 58) |
 225                                ((int64_t)(aname[len-1] & 0x1F) << 32);
 226                         /* fall through */
 227                 case 0:
 228                         break;
 229                 }
 230                 if (key == 0)
 231                         key |= 0x100000000LL;
 232                 printf("0x%016jx\n", (uintmax_t)key);
 233                 exit(0);
 234         }
 235         if (strcmp(av[0], "namekey1") == 0) {
 236                 int64_t key;
 237
 238                 if (av[1] == NULL)
 239                         usage(1);
 240                 key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
 241                 if (key == 0)
 242                         key |= 0x100000000LL;
 243                 printf("0x%016jx\n", (uintmax_t)key);
 244                 exit(0);
 245         }
 246         if (strcmp(av[0], "namekey32") == 0) {
 247                 int32_t key;
 248
 249                 if (av[1] == NULL)
 250                         usage(1);
 251                 key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
 252                 if (key == 0)
 253                         ++key;
 254                 printf("0x%08x\n", key);
 255                 exit(0);
 256         }
 257         if (strcmp(av[0], "pfs-status") == 0) {
 258                 hammer_cmd_pseudofs_status(av + 1, ac - 1);
 259                 exit(0);
 260         }
 261         if (strcmp(av[0], "pfs-master") == 0) {
 262                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
 263                 exit(0);
 264         }
 265         if (strcmp(av[0], "pfs-slave") == 0) {
 266                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
 267                 exit(0);
 268         }
 269         if (strcmp(av[0], "pfs-update") == 0) {
 270                 hammer_cmd_pseudofs_update(av + 1, ac - 1);
 271                 exit(0);
 272         }
 273         if (strcmp(av[0], "pfs-upgrade") == 0) {
 274                 hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
 275                 exit(0);
 276         }
 277         if (strcmp(av[0], "pfs-downgrade") == 0) {
 278                 hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
 279                 exit(0);
 280         }
 281         if (strcmp(av[0], "pfs-destroy") == 0) {
 282                 hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
 283                 exit(0);
 284         }
 285         if (strcmp(av[0], "status") == 0) {
 286                 hammer_cmd_status(av + 1, ac - 1);
 287                 exit(0);
 288         }
 289         if (strcmp(av[0], "prune") == 0) {
 290                 hammer_cmd_softprune(av + 1, ac - 1, 0);
 291                 exit(0);
 292         }
 293         if (strcmp(av[0], "cleanup") == 0) {
 294                 hammer_cmd_cleanup(av + 1, ac - 1);
 295                 exit(0);
 296         }
 297         if (strcmp(av[0], "info") == 0) {
 298                 hammer_cmd_info();
 299                 exit(0);
 300         }
 301         if (strcmp(av[0], "prune-everything") == 0) {
 302                 hammer_cmd_softprune(av + 1, ac - 1, 1);
 303                 exit(0);
 304         }
 305         if (strcmp(av[0], "snapshot") == 0) {
 306                 hammer_cmd_snapshot(av + 1, ac - 1);
 307                 exit(0);
 308         }
 309         if (strcmp(av[0], "bstats") == 0) {
 310                 hammer_cmd_bstats(av + 1, ac - 1);
 311                 exit(0);
 312         }
 313         if (strcmp(av[0], "iostats") == 0) {
 314                 hammer_cmd_iostats(av + 1, ac - 1);
 315                 exit(0);
 316         }
 317
 318         if (strncmp(av[0], "history", 7) == 0) {
 319                 hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
 320                 exit(0);
 321         }
 322         if (strcmp(av[0], "rebalance") == 0) {
 323                 signal(SIGINT, sigalrm);
 324                 hammer_cmd_rebalance(av + 1, ac - 1);
 325                 exit(0);
 326         }
 327         if (strncmp(av[0], "reblock", 7) == 0) {
 328                 signal(SIGINT, sigalrm);
 329                 if (strcmp(av[0], "reblock") == 0)
 330                         hammer_cmd_reblock(av + 1, ac - 1, -1);
 331                 else if (strcmp(av[0], "reblock-btree") == 0)
 332                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
 333                 else if (strcmp(av[0], "reblock-inodes") == 0)
 334                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
 335                 else if (strcmp(av[0], "reblock-dirs") == 0)
 336                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
 337                 else if (strcmp(av[0], "reblock-data") == 0)
 338                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
 339                 else
 340                         usage(1);
 341                 exit(0);
 342         }
 343         if (strncmp(av[0], "mirror", 6) == 0) {
 344                 if (strcmp(av[0], "mirror-read") == 0)
 345                         hammer_cmd_mirror_read(av + 1, ac - 1, 0);
 346                 else if (strcmp(av[0], "mirror-read-stream") == 0)
 347                         hammer_cmd_mirror_read(av + 1, ac - 1, 1);
 348                 else if (strcmp(av[0], "mirror-write") == 0)
 349                         hammer_cmd_mirror_write(av + 1, ac - 1);
 350                 else if (strcmp(av[0], "mirror-copy") == 0)
 351                         hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
 352                 else if (strcmp(av[0], "mirror-stream") == 0)
 353                         hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
 354                 else if (strcmp(av[0], "mirror-dump") == 0)
 355                         hammer_cmd_mirror_dump();
 356                 else
 357                         usage(1);
 358                 exit(0);
 359         }
 360         if (strcmp(av[0], "version") == 0) {
 361                 hammer_cmd_get_version(av + 1, ac - 1);
 362                 exit(0);
 363         }
 364         if (strcmp(av[0], "version-upgrade") == 0) {
 365                 hammer_cmd_set_version(av + 1, ac - 1);
 366                 exit(0);
 367         }
 368         if (strcmp(av[0], "expand") == 0) {
 369                 hammer_cmd_expand(av + 1, ac - 1);
 370                 exit(0);
 371         }
 372
 373         uuid_name_lookup(&Hammer_FSType, "DragonFly HAMMER", &status);
 374         if (status != uuid_s_ok) {
 375                 errx(1, "uuids file does not have the DragonFly "
 376                         "HAMMER filesystem type");
 377         }
 378
 379         if (strcmp(av[0], "show") == 0) {
 380                 u_int32_t lo = 0;
 381                 intmax_t obj_id = (int64_t)HAMMER_MIN_OBJID;
 382
 383                 hammer_parsedevs(blkdevs);
 384                 if (ac > 1)
 385                         sscanf(av[1], "%08x:%jx", &lo, &obj_id);
 386                 hammer_cmd_show(-1, lo, (int64_t)obj_id, 0, NULL, NULL);
 387                 exit(0);
 388         }
 389         if (strcmp(av[0], "blockmap") == 0) {
 390                 hammer_parsedevs(blkdevs);
 391                 hammer_cmd_blockmap();
 392                 exit(0);
 393         }
 394         usage(1);
 395         /* not reached */
 396         return(0);
 397 }
 398
 399 /*
 400  * Parse the device specification.
 401  *
 402  * Multi-volume hammer devices are colon-separated.  Each element
 403  * may be further expanded via /etc/devtab.  One may also specify
 404  * a single element which is expanded into multiple elements via
 405  * /etc/devtab.
 406  */
 407 static
 408 void
 409 hammer_parsedevs(const char *blkdevs)
 410 {
 411         char *copy;
 412         char *volname;
 413
 414         if (blkdevs == NULL) {
 415                 errx(1, "A -f blkdev[:blkdev]* specification is required "
 416                         "for this command");
 417         }
 418
 419         copy = strdup(blkdevs);
 420         while ((volname = copy) != NULL) {
 421                 if ((copy = strchr(copy, ':')) != NULL)
 422                         *copy++ = 0;
 423                 volname = getdevpath(volname, 0);
 424                 if (strchr(volname, ':'))
 425                         hammer_parsedevs(volname);
 426                 else
 427                         setup_volume(-1, volname, 0, O_RDONLY);
 428         }
 429 }
 430
 431 static
 432 void
 433 sigalrm(int signo __unused)
 434 {
 435         /* do nothing (interrupts HAMMER ioctl) */
 436 }
 437
 438 static
 439 void
 440 sigintr(int signo __unused)
 441 {
 442         if (RunningIoctl == 0)
 443                 _exit(1);
 444         DidInterrupt = 1;
 445         /* do nothing (interrupts HAMMER ioctl) */
 446 }
 447
 448 static
 449 void
 450 usage(int exit_code)
 451 {
 452         fprintf(stderr,
 453                 "hammer -h\n"
 454                 "hammer [-2qrvy] [-b bandwidth] [-c cyclefile] [-f blkdev[:blkdev]*]\n"
 455                 "       [-i delay ] [-t seconds] command [argument ...]\n"
 456                 "hammer synctid <filesystem> [quick]\n"
 457                 "hammer -f blkdev[:blkdev]* blockmap\n"
 458                 "hammer bstats [interval]\n"
 459                 "hammer iostats [interval]\n"
 460                 "hammer history[@offset[,len]] <file> ...\n"
 461                 "hammer -f blkdev[:blkdev]* [-r] [-vvv] show [offset]\n"
 462 #if 0
 463                 "hammer -f blkdev[:blkdev]* blockmap\n"
 464 #endif
 465                 "hammer namekey1 <path>\n"
 466                 "hammer namekey2 <path>\n"
 467                 "hammer cleanup [<filesystem> ...]\n"
 468                 "hammer info\n"
 469                 "hammer snapshot [<filesystem>] <snapshot-dir>\n"
 470                 "hammer prune <softlink-dir>\n"
 471                 "hammer prune-everything <filesystem>\n"
 472                 "hammer rebalance <filesystem> [saturation_percentage]\n"
 473                 "hammer reblock[-btree/inodes/dirs/data] "
 474                         "<filesystem> [fill_percentage]\n"
 475                 "hammer pfs-status <dirpath> ...\n"
 476                 "hammer pfs-master <dirpath> [options]\n"
 477                 "hammer pfs-slave <dirpath> [options]\n"
 478                 "hammer pfs-update <dirpath> [options]\n"
 479                 "hammer pfs-upgrade <dirpath>\n"
 480                 "hammer pfs-downgrade <dirpath>\n"
 481                 "hammer pfs-destroy <dirpath>\n"
 482                 "hammer mirror-read <filesystem> [begin-tid]\n"
 483                 "hammer mirror-read-stream <filesystem> [begin-tid]\n"
 484                 "hammer mirror-write <filesystem>\n"
 485                 "hammer mirror-dump\n"
 486                 "hammer mirror-copy [[user@]host:]<filesystem>"
 487                                   " [[user@]host:]<filesystem>\n"
 488                 "hammer mirror-stream [[user@]host:]<filesystem>"
 489                                     " [[user@]host:]<filesystem>\n"
 490                 "hammer version <filesystem>\n"
 491                 "hammer version-upgrade <filesystem> version# [force]\n"
 492                 "hammer expand <filesystem> <device>\n"
 493         );
 494         exit(exit_code);
 495 }
 496