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 RunningIoctl;
  56 int DidInterrupt;
  57 u_int64_t BandwidthOpt;
  58 const char *CyclePath;
  59 const char *LinkPath;
  60
  61 int
  62 main(int ac, char **av)
  63 {
  64         char *blkdevs = NULL;
  65         char *ptr;
  66         u_int32_t status;
  67         int ch;
  68         int cacheSize = 0;
  69
  70         while ((ch = getopt(ac, av, "b:c:dhf:i:qrs:t:v2yC:")) != -1) {
  71                 switch(ch) {
  72                 case '2':
  73                         TwoWayPipeOpt = 1;
  74                         break;
  75                 case 'y':
  76                         ForceYesOpt = 1;
  77                         break;
  78                 case 'b':
  79                         BandwidthOpt = strtoull(optarg, &ptr, 0);
  80                         switch(*ptr) {
  81                         case 'g':
  82                         case 'G':
  83                                 BandwidthOpt *= 1024;
  84                                 /* fall through */
  85                         case 'm':
  86                         case 'M':
  87                                 BandwidthOpt *= 1024;
  88                                 /* fall through */
  89                         case 'k':
  90                         case 'K':
  91                                 BandwidthOpt *= 1024;
  92                                 break;
  93                         case '\0':
  94                                 /* bytes per second if no suffix */
  95                                 break;
  96                         default:
  97                                 usage(1);
  98                         }
  99                         break;
 100                 case 'c':
 101                         CyclePath = optarg;
 102                         break;
 103                 case 'd':
 104                         ++DebugOpt;
 105                         break;
 106                 case 'h':
 107                         usage(0);
 108                         /* not reached */
 109                 case 'i':
 110                         DelayOpt = strtol(optarg, NULL, 0);
 111                         break;
 112                 case 'r':
 113                         RecurseOpt = 1;
 114                         break;
 115                 case 'f':
 116                         blkdevs = optarg;
 117                         break;
 118                 case 's':
 119                         LinkPath = optarg;
 120                         break;
 121                 case 't':
 122                         TimeoutOpt = strtol(optarg, NULL, 0);
 123                         break;
 124                 case 'v':
 125                         if (QuietOpt > 0)
 126                                 --QuietOpt;
 127                         else
 128                                 ++VerboseOpt;
 129                         break;
 130                 case 'q':
 131                         if (VerboseOpt > 0)
 132                                 --VerboseOpt;
 133                         else
 134                                 ++QuietOpt;
 135                         break;
 136                 case 'C':
 137                         cacheSize = strtol(optarg, &ptr, 0);
 138                         switch(*ptr) {
 139                         case 'm':
 140                         case 'M':
 141                                 cacheSize *= 1024;
 142                                 /* fall through */
 143                         case 'k':
 144                         case 'K':
 145                                 cacheSize *= 1024;
 146                                 ++ptr;
 147                                 break;
 148                         case '\0':
 149                         case ':':
 150                                 /* bytes if no suffix */
 151                                 break;
 152                         default:
 153                                 usage(1);
 154                         }
 155                         if (*ptr == ':') {
 156                                 UseReadAhead = strtol(ptr + 1, NULL, 0);
 157                                 UseReadBehind = -UseReadAhead;
 158                         }
 159                         if (cacheSize < 1024 * 1024)
 160                                 cacheSize = 1024 * 1024;
 161                         if (UseReadAhead < 0)
 162                                 usage(1);
 163                         if (UseReadAhead * HAMMER_BUFSIZE / cacheSize / 16) {
 164                                 UseReadAhead = cacheSize / 16 / HAMMER_BUFSIZE;
 165                                 UseReadBehind = -UseReadAhead;
 166                         }
 167                         hammer_cache_set(cacheSize);
 168                         break;
 169                 default:
 170                         usage(1);
 171                         /* not reached */
 172                 }
 173         }
 174         ac -= optind;
 175         av += optind;
 176         if (ac < 1) {
 177                 usage(1);
 178                 /* not reached */
 179         }
 180
 181         signal(SIGALRM, sigalrm);
 182         signal(SIGINT, sigintr);
 183
 184         if (strcmp(av[0], "synctid") == 0) {
 185                 hammer_cmd_synctid(av + 1, ac - 1);
 186                 exit(0);
 187         }
 188         if (strcmp(av[0], "namekey2") == 0) {
 189                 int64_t key;
 190                 int32_t crcx;
 191                 int len;
 192                 const char *aname = av[1];
 193
 194                 if (aname == NULL)
 195                         usage(1);
 196                 len = strlen(aname);
 197                 key = (u_int32_t)crc32(aname, len) & 0xFFFFFFFEU;
 198
 199                 switch(len) {
 200                 default:
 201                         crcx = crc32(aname + 3, len - 5);
 202                         crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
 203                         key |= (int64_t)(crcx & 0x3F) << 42;
 204                         /* fall through */
 205                 case 5:
 206                 case 4:
 207                         /* fall through */
 208                 case 3:
 209                         key |= ((int64_t)(aname[2] & 0x1F) << 48);
 210                         /* fall through */
 211                 case 2:
 212                         key |= ((int64_t)(aname[1] & 0x1F) << 53) |
 213                                ((int64_t)(aname[len-2] & 0x1F) << 37);
 214                         /* fall through */
 215                 case 1:
 216                         key |= ((int64_t)(aname[0] & 0x1F) << 58) |
 217                                ((int64_t)(aname[len-1] & 0x1F) << 32);
 218                         /* fall through */
 219                 case 0:
 220                         break;
 221                 }
 222                 if (key == 0)
 223                         key |= 0x100000000LL;
 224                 printf("0x%016llx\n", key);
 225                 exit(0);
 226         }
 227         if (strcmp(av[0], "namekey1") == 0) {
 228                 int64_t key;
 229
 230                 if (av[1] == NULL)
 231                         usage(1);
 232                 key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
 233                 if (key == 0)
 234                         key |= 0x100000000LL;
 235                 printf("0x%016llx\n", key);
 236                 exit(0);
 237         }
 238         if (strcmp(av[0], "namekey32") == 0) {
 239                 int32_t key;
 240
 241                 if (av[1] == NULL)
 242                         usage(1);
 243                 key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
 244                 if (key == 0)
 245                         ++key;
 246                 printf("0x%08x\n", key);
 247                 exit(0);
 248         }
 249         if (strcmp(av[0], "pfs-status") == 0) {
 250                 hammer_cmd_pseudofs_status(av + 1, ac - 1);
 251                 exit(0);
 252         }
 253         if (strcmp(av[0], "pfs-master") == 0) {
 254                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
 255                 exit(0);
 256         }
 257         if (strcmp(av[0], "pfs-slave") == 0) {
 258                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
 259                 exit(0);
 260         }
 261         if (strcmp(av[0], "pfs-update") == 0) {
 262                 hammer_cmd_pseudofs_update(av + 1, ac - 1);
 263                 exit(0);
 264         }
 265         if (strcmp(av[0], "pfs-upgrade") == 0) {
 266                 hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
 267                 exit(0);
 268         }
 269         if (strcmp(av[0], "pfs-downgrade") == 0) {
 270                 hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
 271                 exit(0);
 272         }
 273         if (strcmp(av[0], "pfs-destroy") == 0) {
 274                 hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
 275                 exit(0);
 276         }
 277         if (strcmp(av[0], "status") == 0) {
 278                 hammer_cmd_status(av + 1, ac - 1);
 279                 exit(0);
 280         }
 281         if (strcmp(av[0], "prune") == 0) {
 282                 hammer_cmd_softprune(av + 1, ac - 1, 0);
 283                 exit(0);
 284         }
 285         if (strcmp(av[0], "cleanup") == 0) {
 286                 hammer_cmd_cleanup(av + 1, ac - 1);
 287                 exit(0);
 288         }
 289         if (strcmp(av[0], "info") == 0) {
 290                 hammer_cmd_info(ac - 1);
 291                 exit(0);
 292         }
 293         if (strcmp(av[0], "prune-everything") == 0) {
 294                 hammer_cmd_softprune(av + 1, ac - 1, 1);
 295                 exit(0);
 296         }
 297         if (strcmp(av[0], "snapshot") == 0) {
 298                 hammer_cmd_snapshot(av + 1, ac - 1);
 299                 exit(0);
 300         }
 301         if (strcmp(av[0], "bstats") == 0) {
 302                 hammer_cmd_bstats(av + 1, ac - 1);
 303                 exit(0);
 304         }
 305         if (strcmp(av[0], "iostats") == 0) {
 306                 hammer_cmd_iostats(av + 1, ac - 1);
 307                 exit(0);
 308         }
 309
 310         if (strncmp(av[0], "history", 7) == 0) {
 311                 hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
 312                 exit(0);
 313         }
 314         if (strcmp(av[0], "rebalance") == 0) {
 315                 signal(SIGINT, sigalrm);
 316                 hammer_cmd_rebalance(av + 1, ac - 1);
 317                 exit(0);
 318         }
 319         if (strncmp(av[0], "reblock", 7) == 0) {
 320                 signal(SIGINT, sigalrm);
 321                 if (strcmp(av[0], "reblock") == 0)
 322                         hammer_cmd_reblock(av + 1, ac - 1, -1);
 323                 else if (strcmp(av[0], "reblock-btree") == 0)
 324                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
 325                 else if (strcmp(av[0], "reblock-inodes") == 0)
 326                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
 327                 else if (strcmp(av[0], "reblock-dirs") == 0)
 328                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
 329                 else if (strcmp(av[0], "reblock-data") == 0)
 330                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
 331                 else
 332                         usage(1);
 333                 exit(0);
 334         }
 335         if (strncmp(av[0], "mirror", 6) == 0) {
 336                 if (strcmp(av[0], "mirror-read") == 0)
 337                         hammer_cmd_mirror_read(av + 1, ac - 1, 0);
 338                 else if (strcmp(av[0], "mirror-read-stream") == 0)
 339                         hammer_cmd_mirror_read(av + 1, ac - 1, 1);
 340                 else if (strcmp(av[0], "mirror-write") == 0)
 341                         hammer_cmd_mirror_write(av + 1, ac - 1);
 342                 else if (strcmp(av[0], "mirror-copy") == 0)
 343                         hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
 344                 else if (strcmp(av[0], "mirror-stream") == 0)
 345                         hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
 346                 else if (strcmp(av[0], "mirror-dump") == 0)
 347                         hammer_cmd_mirror_dump();
 348                 else
 349                         usage(1);
 350                 exit(0);
 351         }
 352         if (strcmp(av[0], "version") == 0) {
 353                 hammer_cmd_get_version(av + 1, ac - 1);
 354                 exit(0);
 355         }
 356         if (strcmp(av[0], "version-upgrade") == 0) {
 357                 hammer_cmd_set_version(av + 1, ac - 1);
 358                 exit(0);
 359         }
 360         if (strcmp(av[0], "expand") == 0) {
 361                 hammer_cmd_expand(av + 1, ac - 1);
 362                 exit(0);
 363         }
 364
 365         uuid_name_lookup(&Hammer_FSType, "DragonFly HAMMER", &status);
 366         if (status != uuid_s_ok) {
 367                 errx(1, "uuids file does not have the DragonFly "
 368                         "HAMMER filesystem type");
 369         }
 370
 371         if (strcmp(av[0], "show") == 0) {
 372                 hammer_off_t node_offset = (hammer_off_t)-1;
 373
 374                 hammer_parsedevs(blkdevs);
 375                 if (ac > 1)
 376                         sscanf(av[1], "%llx", &node_offset);
 377                 hammer_cmd_show(node_offset, 0, NULL, NULL);
 378                 exit(0);
 379         }
 380         if (strcmp(av[0], "blockmap") == 0) {
 381                 hammer_parsedevs(blkdevs);
 382                 hammer_cmd_blockmap();
 383                 exit(0);
 384         }
 385         usage(1);
 386         /* not reached */
 387         return(0);
 388 }
 389
 390 /*
 391  * Parse the device specification.
 392  *
 393  * Multi-volume hammer devices are colon-separated.  Each element
 394  * may be further expanded via /etc/devtab.  One may also specify
 395  * a single element which is expanded into multiple elements via
 396  * /etc/devtab.
 397  */
 398 static
 399 void
 400 hammer_parsedevs(const char *blkdevs)
 401 {
 402         char *copy;
 403         char *volname;
 404
 405         if (blkdevs == NULL) {
 406                 errx(1, "A -f blkdev[:blkdev]* specification is required "
 407                         "for this command");
 408         }
 409
 410         copy = strdup(blkdevs);
 411         while ((volname = copy) != NULL) {
 412                 if ((copy = strchr(copy, ':')) != NULL)
 413                         *copy++ = 0;
 414                 volname = getdevpath(volname, 0);
 415                 if (strchr(volname, ':'))
 416                         hammer_parsedevs(volname);
 417                 else
 418                         setup_volume(-1, volname, 0, O_RDONLY);
 419         }
 420 }
 421
 422 static
 423 void
 424 sigalrm(int signo __unused)
 425 {
 426         /* do nothing (interrupts HAMMER ioctl) */
 427 }
 428
 429 static
 430 void
 431 sigintr(int signo __unused)
 432 {
 433         if (RunningIoctl == 0)
 434                 _exit(1);
 435         DidInterrupt = 1;
 436         /* do nothing (interrupts HAMMER ioctl) */
 437 }
 438
 439 static
 440 void
 441 usage(int exit_code)
 442 {
 443         fprintf(stderr,
 444                 "hammer -h\n"
 445                 "hammer [-2qrvy] [-b bandwidth] [-c cyclefile] [-f blkdev[:blkdev]*]\n"
 446                 "       [-i delay ] [-t seconds] command [argument ...]\n"
 447                 "hammer synctid <filesystem> [quick]\n"
 448                 "hammer -f blkdev[:blkdev]* blockmap\n"
 449                 "hammer bstats [interval]\n"
 450                 "hammer iostats [interval]\n"
 451                 "hammer history[@offset[,len]] <file> ...\n"
 452                 "hammer -f blkdev[:blkdev]* [-r] [-vvv] show [offset]\n"
 453 #if 0
 454                 "hammer -f blkdev[:blkdev]* blockmap\n"
 455 #endif
 456                 "hammer namekey1 <path>\n"
 457                 "hammer namekey2 <path>\n"
 458                 "hammer cleanup [<filesystem> ...]\n"
 459                 "hammer info\n"
 460                 "hammer snapshot [<filesystem>] <snapshot-dir>\n"
 461                 "hammer prune <softlink-dir>\n"
 462                 "hammer prune-everything <filesystem>\n"
 463                 "hammer rebalance <filesystem> [saturation_percentage]\n"
 464                 "hammer reblock[-btree/inodes/dirs/data] "
 465                         "<filesystem> [fill_percentage]\n"
 466                 "hammer pfs-status <dirpath> ...\n"
 467                 "hammer pfs-master <dirpath> [options]\n"
 468                 "hammer pfs-slave <dirpath> [options]\n"
 469                 "hammer pfs-update <dirpath> [options]\n"
 470                 "hammer pfs-upgrade <dirpath>\n"
 471                 "hammer pfs-downgrade <dirpath>\n"
 472                 "hammer pfs-destroy <dirpath>\n"
 473                 "hammer mirror-read <filesystem> [begin-tid]\n"
 474                 "hammer mirror-read-stream <filesystem> [begin-tid]\n"
 475                 "hammer mirror-write <filesystem>\n"
 476                 "hammer mirror-dump\n"
 477                 "hammer mirror-copy [[user@]host:]<filesystem>"
 478                                   " [[user@]host:]<filesystem>\n"
 479                 "hammer mirror-stream [[user@]host:]<filesystem>"
 480                                     " [[user@]host:]<filesystem>\n"
 481                 "hammer version <filesystem>\n"
 482                 "hammer version-upgrade <filesystem> version# [force]\n"
 483                 "hammer expand <filesystem> <device>\n"
 484         );
 485         exit(exit_code);
 486 }
 487