mdadm.c

   1 /*
   2  * mdadm - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
   5  *
   6  *
   7  *    This program is free software; you can redistribute it and/or modify
   8  *    it under the terms of the GNU General Public License as published by
   9  *    the Free Software Foundation; either version 2 of the License, or
  10  *    (at your option) any later version.
  11  *
  12  *    This program is distributed in the hope that it will be useful,
  13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *    GNU General Public License for more details.
  16  *
  17  *    You should have received a copy of the GNU General Public License
  18  *    along with this program; if not, write to the Free Software
  19  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  *    Author: Neil Brown
  22  *    Email: <neilb@suse.de>
  23  *
  24  *    Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004,
  25  *    Paul Clements, SteelEye Technology, Inc.
  26  */
  27
  28 #include "mdadm.h"
  29 #include "md_p.h"
  30 #include <ctype.h>
  31
  32
  33 int main(int argc, char *argv[])
  34 {
  35         int mode = 0;
  36         int opt;
  37         int option_index;
  38         char *c;
  39         int rv;
  40         int i;
  41
  42         int chunk = 0;
  43         long long size = -1;
  44         long long array_size = -1;
  45         int level = UnSet;
  46         int layout = UnSet;
  47         char *layout_str = NULL;
  48         int raiddisks = 0;
  49         int max_disks = MD_SB_DISKS; /* just a default */
  50         int sparedisks = 0;
  51         struct mddev_ident ident;
  52         char *configfile = NULL;
  53         char *cp;
  54         char *update = NULL;
  55         int scan = 0;
  56         char devmode = 0;
  57         int runstop = 0;
  58         int readonly = 0;
  59         int write_behind = 0;
  60         int bitmap_fd = -1;
  61         char *bitmap_file = NULL;
  62         char *backup_file = NULL;
  63         int bitmap_chunk = UnSet;
  64         int SparcAdjust = 0;
  65         struct mddev_dev *devlist = NULL;
  66         struct mddev_dev **devlistend = & devlist;
  67         struct mddev_dev *dv;
  68         int devs_found = 0;
  69         int verbose = 0;
  70         int quiet = 0;
  71         int brief = 0;
  72         int force = 0;
  73         int test = 0;
  74         int export = 0;
  75         int assume_clean = 0;
  76         char *symlinks = NULL;
  77         /* autof indicates whether and how to create device node.
  78          * bottom 3 bits are style.  Rest (when shifted) are number of parts
  79          * 0  - unset
  80          * 1  - don't create (no)
  81          * 2  - if is_standard, then create (yes)
  82          * 3  - create as 'md' - reject is_standard mdp (md)
  83          * 4  - create as 'mdp' - reject is_standard md (mdp)
  84          * 5  - default to md if not is_standard (md in config file)
  85          * 6  - default to mdp if not is_standard (part, or mdp in config file)
  86          */
  87         int autof = 0;
  88
  89         char *homehost = NULL;
  90         char sys_hostname[256];
  91         int require_homehost = 1;
  92         char *mailaddr = NULL;
  93         char *program = NULL;
  94         int increments = 20;
  95         int delay = 0;
  96         int daemonise = 0;
  97         char *pidfile = NULL;
  98         int oneshot = 0;
  99         struct supertype *ss = NULL;
 100         int writemostly = 0;
 101         int re_add = 0;
 102         char *shortopt = short_options;
 103         int dosyslog = 0;
 104         int rebuild_map = 0;
 105         int auto_update_home = 0;
 106         char *subarray = NULL;
 107         char *remove_path = NULL;
 108
 109         int print_help = 0;
 110         FILE *outf;
 111
 112         int mdfd = -1;
 113
 114         srandom(time(0) ^ getpid());
 115
 116         ident.uuid_set=0;
 117         ident.level = UnSet;
 118         ident.raid_disks = UnSet;
 119         ident.super_minor= UnSet;
 120         ident.devices=0;
 121         ident.spare_group = NULL;
 122         ident.autof = 0;
 123         ident.st = NULL;
 124         ident.bitmap_fd = -1;
 125         ident.bitmap_file = NULL;
 126         ident.name[0] = 0;
 127         ident.container = NULL;
 128         ident.member = NULL;
 129
 130         while ((option_index = -1) ,
 131                (opt=getopt_long(argc, argv,
 132                                 shortopt, long_options,
 133                                 &option_index)) != -1) {
 134                 int newmode = mode;
 135                 /* firstly, some mode-independent options */
 136                 switch(opt) {
 137                 case 'h':
 138                         if (option_index > 0 &&
 139                             strcmp(long_options[option_index].name, "help-options")==0)
 140                                 print_help = 2;
 141                         else
 142                                 print_help = 1;
 143                         continue;
 144
 145                 case 'V':
 146                         fputs(Version, stderr);
 147                         exit(0);
 148
 149                 case 'v': verbose++;
 150                         continue;
 151
 152                 case 'q': quiet++;
 153                         continue;
 154
 155                 case 'b':
 156                         if (mode == ASSEMBLE || mode == BUILD || mode == CREATE || mode == GROW ||
 157                             mode == INCREMENTAL || mode == MANAGE)
 158                                 break; /* b means bitmap */
 159                         brief = 1;
 160                         continue;
 161
 162                 case 'Y': export++;
 163                         continue;
 164
 165                 case HomeHost:
 166                         if (strcasecmp(optarg, "<ignore>") == 0)
 167                                 require_homehost = 0;
 168                         else
 169                                 homehost = optarg;
 170                         continue;
 171
 172                 case ':':
 173                 case '?':
 174                         fputs(Usage, stderr);
 175                         exit(2);
 176                 }
 177                 /* second, figure out the mode.
 178                  * Some options force the mode.  Others
 179                  * set the mode if it isn't already
 180                  */
 181
 182                 switch(opt) {
 183                 case '@': /* just incase they say --manage */
 184                         newmode = MANAGE;
 185                         shortopt = short_bitmap_options;
 186                         break;
 187                 case 'a':
 188                 case 'r':
 189                 case 'f':
 190                 case ReAdd: /* re-add */
 191                         if (!mode) {
 192                                 newmode = MANAGE;
 193                                 shortopt = short_bitmap_options;
 194                         }
 195                         break;
 196
 197                 case 'A': newmode = ASSEMBLE; shortopt = short_bitmap_auto_options; break;
 198                 case 'B': newmode = BUILD; shortopt = short_bitmap_auto_options; break;
 199                 case 'C': newmode = CREATE; shortopt = short_bitmap_auto_options; break;
 200                 case 'F': newmode = MONITOR;break;
 201                 case 'G': newmode = GROW;
 202                         shortopt = short_bitmap_options;
 203                         break;
 204                 case 'I': newmode = INCREMENTAL;
 205                         shortopt = short_bitmap_auto_options; break;
 206                 case AutoDetect:
 207                         newmode = AUTODETECT; break;
 208
 209                 case '#':
 210                 case 'D':
 211                 case 'E':
 212                 case 'X':
 213                 case 'Q': newmode = MISC; break;
 214                 case 'R':
 215                 case 'S':
 216                 case 'o':
 217                 case 'w':
 218                 case 'W':
 219                 case Waitclean:
 220                 case DetailPlatform:
 221                 case KillSubarray:
 222                 case UpdateSubarray:
 223                         if (opt == KillSubarray || opt == UpdateSubarray) {
 224                                 if (subarray) {
 225                                         fprintf(stderr, Name ": subarray can only be specified once\n");
 226                                         exit(2);
 227                                 }
 228                                 subarray = optarg;
 229                         }
 230                 case 'K': if (!mode) newmode = MISC; break;
 231                 }
 232                 if (mode && newmode == mode) {
 233                         /* everybody happy ! */
 234                 } else if (mode && newmode != mode) {
 235                         /* not allowed.. */
 236                         fprintf(stderr, Name ": ");
 237                         if (option_index >= 0)
 238                                 fprintf(stderr, "--%s", long_options[option_index].name);
 239                         else
 240                                 fprintf(stderr, "-%c", opt);
 241                         fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
 242                                 map_num(modes, newmode),
 243                                 map_num(modes, mode));
 244                         exit(2);
 245                 } else if (!mode && newmode) {
 246                         mode = newmode;
 247                 } else {
 248                         /* special case of -c --help */
 249                         if (opt == 'c' &&
 250                             ( strncmp(optarg, "--h", 3)==0 ||
 251                               strncmp(optarg, "-h", 2)==0)) {
 252                                 fputs(Help_config, stdout);
 253                                 exit(0);
 254                         }
 255
 256                         /* If first option is a device, don't force the mode yet */
 257                         if (opt == 1) {
 258                                 if (devs_found == 0) {
 259                                         dv = malloc(sizeof(*dv));
 260                                         if (dv == NULL) {
 261                                                 fprintf(stderr, Name ": malloc failed\n");
 262                                                 exit(3);
 263                                         }
 264                                         dv->devname = optarg;
 265                                         dv->disposition = devmode;
 266                                         dv->writemostly = writemostly;
 267                                         dv->re_add = re_add;
 268                                         dv->used = 0;
 269                                         dv->next = NULL;
 270                                         *devlistend = dv;
 271                                         devlistend = &dv->next;
 272
 273                                         devs_found++;
 274                                         continue;
 275                                 }
 276                                 /* No mode yet, and this is the second device ... */
 277                                 fprintf(stderr, Name ": An option must be given to set the mode before a second device\n"
 278                                         "       (%s) is listed\n", optarg);
 279                                 exit(2);
 280                         }
 281                         if (option_index >= 0)
 282                                 fprintf(stderr, Name ": --%s", long_options[option_index].name);
 283                         else
 284                                 fprintf(stderr, Name ": -%c", opt);
 285                         fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
 286                         exit(2);
 287                 }
 288
 289                 /* if we just set the mode, then done */
 290                 switch(opt) {
 291                 case '@':
 292                 case '#':
 293                 case 'A':
 294                 case 'B':
 295                 case 'C':
 296                 case 'F':
 297                 case 'G':
 298                 case 'I':
 299                 case AutoDetect:
 300                         continue;
 301                 }
 302                 if (opt == 1) {
 303                         /* an undecorated option - must be a device name.
 304                          */
 305                         if (devs_found > 0 && mode == '@' && !devmode) {
 306                                 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
 307                                 exit(2);
 308                         }
 309                         if (devs_found > 0 && mode == 'G' && !devmode) {
 310                                 fprintf(stderr, Name ": Must give one of -a for devices do add: %s\n", optarg);
 311                                 exit(2);
 312                         }
 313                         dv = malloc(sizeof(*dv));
 314                         if (dv == NULL) {
 315                                 fprintf(stderr, Name ": malloc failed\n");
 316                                 exit(3);
 317                         }
 318                         dv->devname = optarg;
 319                         dv->disposition = devmode;
 320                         dv->writemostly = writemostly;
 321                         dv->re_add = re_add;
 322                         dv->used = 0;
 323                         dv->next = NULL;
 324                         *devlistend = dv;
 325                         devlistend = &dv->next;
 326
 327                         devs_found++;
 328                         continue;
 329                 }
 330
 331                 /* We've got a mode, and opt is now something else which
 332                  * could depend on the mode */
 333 #define O(a,b) ((a<<8)|b)
 334                 switch (O(mode,opt)) {
 335                 case O(GROW,'c'):
 336                 case O(CREATE,'c'):
 337                 case O(BUILD,'c'): /* chunk or rounding */
 338                         if (chunk) {
 339                                 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
 340                                         "Second value is %s.\n", optarg);
 341                                 exit(2);
 342                         }
 343                         chunk = strtol(optarg, &c, 10);
 344                         if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
 345                                 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
 346                                         optarg);
 347                                 exit(2);
 348                         }
 349                         continue;
 350
 351 #if 0
 352                 case O(ASSEMBLE,AutoHomeHost):
 353                         auto_update_home = 1;
 354                         continue;
 355 #endif
 356                 case O(INCREMENTAL, 'e'):
 357                 case O(CREATE,'e'):
 358                 case O(ASSEMBLE,'e'):
 359                 case O(MISC,'e'): /* set metadata (superblock) information */
 360                         if (ss) {
 361                                 fprintf(stderr, Name ": metadata information already given\n");
 362                                 exit(2);
 363                         }
 364                         for(i=0; !ss && superlist[i]; i++)
 365                                 ss = superlist[i]->match_metadata_desc(optarg);
 366
 367                         if (!ss) {
 368                                 fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
 369                                 exit(2);
 370                         }
 371                         max_disks = ss->max_devs;
 372                         continue;
 373
 374                 case O(MANAGE,'W'):
 375                 case O(BUILD,'W'):
 376                 case O(CREATE,'W'):
 377                         /* set write-mostly for following devices */
 378                         writemostly = 1;
 379                         continue;
 380
 381                 case O(MANAGE,'w'):
 382                         /* clear write-mostly for following devices */
 383                         writemostly = 2;
 384                         continue;
 385
 386
 387                 case O(GROW,'z'):
 388                 case O(CREATE,'z'):
 389                 case O(BUILD,'z'): /* size */
 390                         if (size >= 0) {
 391                                 fprintf(stderr, Name ": size may only be specified once. "
 392                                         "Second value is %s.\n", optarg);
 393                                 exit(2);
 394                         }
 395                         if (strcmp(optarg, "max")==0)
 396                                 size = 0;
 397                         else {
 398                                 size = parse_size(optarg);
 399                                 if (size < 8) {
 400                                         fprintf(stderr, Name ": invalid size: %s\n",
 401                                                 optarg);
 402                                         exit(2);
 403                                 }
 404                                 /* convert sectors to K */
 405                                 size /= 2;
 406                         }
 407                         continue;
 408
 409                 case O(GROW,'Z'): /* array size */
 410                         if (array_size >= 0) {
 411                                 fprintf(stderr, Name ": array-size may only be specified once. "
 412                                         "Second value is %s.\n", optarg);
 413                                 exit(2);
 414                         }
 415                         if (strcmp(optarg, "max") == 0)
 416                                 array_size = 0;
 417                         else {
 418                                 array_size = parse_size(optarg);
 419                                 if (array_size <= 0) {
 420                                         fprintf(stderr, Name ": invalid array size: %s\n",
 421                                                 optarg);
 422                                         exit(2);
 423                                 }
 424                         }
 425                         continue;
 426
 427                 case O(GROW,'l'):
 428                 case O(CREATE,'l'):
 429                 case O(BUILD,'l'): /* set raid level*/
 430                         if (level != UnSet) {
 431                                 fprintf(stderr, Name ": raid level may only be set once.  "
 432                                         "Second value is %s.\n", optarg);
 433                                 exit(2);
 434                         }
 435                         level = map_name(pers, optarg);
 436                         if (level == UnSet) {
 437                                 fprintf(stderr, Name ": invalid raid level: %s\n",
 438                                         optarg);
 439                                 exit(2);
 440                         }
 441                         if (level != 0 && level != LEVEL_LINEAR && level != 1 &&
 442                             level != LEVEL_MULTIPATH && level != LEVEL_FAULTY &&
 443                             level != 10 &&
 444                             mode == BUILD) {
 445                                 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
 446                                         optarg);
 447                                 exit(2);
 448                         }
 449                         if (sparedisks > 0 && level < 1 && level >= -1) {
 450                                 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
 451                                         optarg);
 452                                 exit(2);
 453                         }
 454                         ident.level = level;
 455                         continue;
 456
 457                 case O(GROW, 'p'): /* new layout */
 458                         if (layout_str) {
 459                                 fprintf(stderr,Name ": layout may only be sent once.  "
 460                                         "Second value was %s\n", optarg);
 461                                 exit(2);
 462                         }
 463                         layout_str = optarg;
 464                         /* 'Grow' will parse the value */
 465                         continue;
 466
 467                 case O(CREATE,'p'): /* raid5 layout */
 468                 case O(BUILD,'p'): /* faulty layout */
 469                         if (layout != UnSet) {
 470                                 fprintf(stderr,Name ": layout may only be sent once.  "
 471                                         "Second value was %s\n", optarg);
 472                                 exit(2);
 473                         }
 474                         switch(level) {
 475                         default:
 476                                 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
 477                                         map_num(pers, level));
 478                                 exit(2);
 479                         case UnSet:
 480                                 fprintf(stderr, Name ": raid level must be given before layout.\n");
 481                                 exit(2);
 482
 483                         case 5:
 484                                 layout = map_name(r5layout, optarg);
 485                                 if (layout==UnSet) {
 486                                         fprintf(stderr, Name ": layout %s not understood for raid5.\n",
 487                                                 optarg);
 488                                         exit(2);
 489                                 }
 490                                 break;
 491                         case 6:
 492                                 layout = map_name(r6layout, optarg);
 493                                 if (layout==UnSet) {
 494                                         fprintf(stderr, Name ": layout %s not understood for raid6.\n",
 495                                                 optarg);
 496                                         exit(2);
 497                                 }
 498                                 break;
 499
 500                         case 10:
 501                                 layout = parse_layout_10(optarg);
 502                                 if (layout < 0) {
 503                                         fprintf(stderr, Name ": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
 504                                         exit(2);
 505                                 }
 506                                 break;
 507                         case LEVEL_FAULTY:
 508                                 /* Faulty
 509                                  * modeNNN
 510                                  */
 511                                 layout = parse_layout_faulty(optarg);
 512                                 if (layout == -1) {
 513                                         fprintf(stderr, Name ": layout %s not understood for faulty.\n",
 514                                                 optarg);
 515                                         exit(2);
 516                                 }
 517                                 break;
 518                         }
 519                         continue;
 520
 521                 case O(CREATE,AssumeClean):
 522                 case O(BUILD,AssumeClean): /* assume clean */
 523                         assume_clean = 1;
 524                         continue;
 525
 526                 case O(GROW,'n'):
 527                 case O(CREATE,'n'):
 528                 case O(BUILD,'n'): /* number of raid disks */
 529                         if (raiddisks) {
 530                                 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
 531                                         raiddisks, optarg);
 532                                 exit(2);
 533                         }
 534                         raiddisks = strtol(optarg, &c, 10);
 535                         if (!optarg[0] || *c || raiddisks<=0) {
 536                                 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
 537                                         optarg);
 538                                 exit(2);
 539                         }
 540                         ident.raid_disks = raiddisks;
 541                         continue;
 542
 543                 case O(CREATE,'x'): /* number of spare (eXtra) discs */
 544                         if (sparedisks) {
 545                                 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
 546                                         sparedisks, optarg);
 547                                 exit(2);
 548                         }
 549                         if (level != UnSet && level <= 0 && level >= -1) {
 550                                 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
 551                                         level);
 552                                 exit(2);
 553                         }
 554                         sparedisks = strtol(optarg, &c, 10);
 555                         if (!optarg[0] || *c || sparedisks < 0) {
 556                                 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
 557                                         optarg);
 558                                 exit(2);
 559                         }
 560                         continue;
 561
 562                 case O(CREATE,'a'):
 563                 case O(BUILD,'a'):
 564                 case O(INCREMENTAL,'a'):
 565                 case O(ASSEMBLE,'a'): /* auto-creation of device node */
 566                         autof = parse_auto(optarg, "--auto flag", 0);
 567                         continue;
 568
 569                 case O(CREATE,Symlinks):
 570                 case O(BUILD,Symlinks):
 571                 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
 572                         symlinks = optarg;
 573                         continue;
 574
 575                 case O(BUILD,'f'): /* force honouring '-n 1' */
 576                 case O(GROW,'f'): /* ditto */
 577                 case O(CREATE,'f'): /* force honouring of device list */
 578                 case O(ASSEMBLE,'f'): /* force assembly */
 579                 case O(MISC,'f'): /* force zero */
 580                         force=1;
 581                         continue;
 582
 583                         /* now for the Assemble options */
 584                 case O(CREATE,'u'): /* uuid of array */
 585                 case O(ASSEMBLE,'u'): /* uuid of array */
 586                         if (ident.uuid_set) {
 587                                 fprintf(stderr, Name ": uuid cannot be set twice.  "
 588                                         "Second value %s.\n", optarg);
 589                                 exit(2);
 590                         }
 591                         if (parse_uuid(optarg, ident.uuid))
 592                                 ident.uuid_set = 1;
 593                         else {
 594                                 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
 595                                 exit(2);
 596                         }
 597                         continue;
 598
 599                 case O(CREATE,'N'):
 600                 case O(ASSEMBLE,'N'):
 601                 case O(MISC,'N'):
 602                         if (ident.name[0]) {
 603                                 fprintf(stderr, Name ": name cannot be set twice.   "
 604                                         "Second value %s.\n", optarg);
 605                                 exit(2);
 606                         }
 607                         if (mode == MISC && !subarray) {
 608                                 fprintf(stderr, Name ": -N/--name only valid with --update-subarray in misc mode\n");
 609                                 exit(2);
 610                         }
 611                         if (strlen(optarg) > 32) {
 612                                 fprintf(stderr, Name ": name '%s' is too long, 32 chars max.\n",
 613                                         optarg);
 614                                 exit(2);
 615                         }
 616                         strcpy(ident.name, optarg);
 617                         continue;
 618
 619                 case O(ASSEMBLE,'m'): /* super-minor for array */
 620                         if (ident.super_minor != UnSet) {
 621                                 fprintf(stderr, Name ": super-minor cannot be set twice.  "
 622                                         "Second value: %s.\n", optarg);
 623                                 exit(2);
 624                         }
 625                         if (strcmp(optarg, "dev")==0)
 626                                 ident.super_minor = -2;
 627                         else {
 628                                 ident.super_minor = strtoul(optarg, &cp, 10);
 629                                 if (!optarg[0] || *cp) {
 630                                         fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
 631                                         exit(2);
 632                                 }
 633                         }
 634                         continue;
 635
 636                 case O(ASSEMBLE,'U'): /* update the superblock */
 637                 case O(MISC,'U'):
 638                         if (update) {
 639                                 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
 640                                         update, optarg);
 641                                 exit(2);
 642                         }
 643                         if (mode == MISC && !subarray) {
 644                                 fprintf(stderr, Name ": Only subarrays can be updated in misc mode\n");
 645                                 exit(2);
 646                         }
 647                         update = optarg;
 648                         if (strcmp(update, "sparc2.2")==0)
 649                                 continue;
 650                         if (strcmp(update, "super-minor") == 0)
 651                                 continue;
 652                         if (strcmp(update, "summaries")==0)
 653                                 continue;
 654                         if (strcmp(update, "resync")==0)
 655                                 continue;
 656                         if (strcmp(update, "uuid")==0)
 657                                 continue;
 658                         if (strcmp(update, "name")==0)
 659                                 continue;
 660                         if (strcmp(update, "homehost")==0)
 661                                 continue;
 662                         if (strcmp(update, "devicesize")==0)
 663                                 continue;
 664                         if (strcmp(update, "byteorder")==0) {
 665                                 if (ss) {
 666                                         fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");
 667                                         exit(2);
 668                                 }
 669                                 for(i=0; !ss && superlist[i]; i++)
 670                                         ss = superlist[i]->match_metadata_desc("0.swap");
 671                                 if (!ss) {
 672                                         fprintf(stderr, Name ": INTERNAL ERROR cannot find 0.swap\n");
 673                                         exit(2);
 674                                 }
 675
 676                                 continue;
 677                         }
 678                         if (strcmp(update,"?") == 0 ||
 679                             strcmp(update, "help") == 0) {
 680                                 outf = stdout;
 681                                 fprintf(outf, Name ": ");
 682                         } else {
 683                                 outf = stderr;
 684                                 fprintf(outf,
 685                                         Name ": '--update=%s' is invalid.  ",
 686                                         update);
 687                         }
 688                         fprintf(outf, "Valid --update options are:\n"
 689                 "     'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
 690                 "     'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
 691                         exit(outf == stdout ? 0 : 2);
 692
 693                 case O(INCREMENTAL,NoDegraded):
 694                         fprintf(stderr, Name ": --no-degraded is deprecated in Incremental mode\n");
 695                 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
 696                         runstop = -1; /* --stop isn't allowed for --assemble,
 697                                        * so we overload slightly */
 698                         continue;
 699
 700                 case O(ASSEMBLE,'c'): /* config file */
 701                 case O(INCREMENTAL, 'c'):
 702                 case O(MISC, 'c'):
 703                 case O(MONITOR,'c'):
 704                         if (configfile) {
 705                                 fprintf(stderr, Name ": configfile cannot be set twice.  "
 706                                         "Second value is %s.\n", optarg);
 707                                 exit(2);
 708                         }
 709                         configfile = optarg;
 710                         set_conffile(configfile);
 711                         /* FIXME possibly check that config file exists.  Even parse it */
 712                         continue;
 713                 case O(ASSEMBLE,'s'): /* scan */
 714                 case O(MISC,'s'):
 715                 case O(MONITOR,'s'):
 716                 case O(INCREMENTAL,'s'):
 717                         scan = 1;
 718                         continue;
 719
 720                 case O(MONITOR,'m'): /* mail address */
 721                         if (mailaddr)
 722                                 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
 723                                         optarg);
 724                         else
 725                                 mailaddr = optarg;
 726                         continue;
 727
 728                 case O(MONITOR,'p'): /* alert program */
 729                         if (program)
 730                                 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
 731                                         optarg);
 732                         else
 733                                 program = optarg;
 734                         continue;
 735
 736                 case O(MONITOR,'r'): /* rebuild increments */
 737                         increments = atoi(optarg);
 738                         if (increments>99 || increments<1) {
 739                                 fprintf(stderr, Name ": please specify positive integer between 1 and 99 as rebuild increments.\n");
 740                                 exit(2);
 741                         }
 742                         continue;
 743
 744                 case O(MONITOR,'d'): /* delay in seconds */
 745                 case O(GROW, 'd'):
 746                 case O(BUILD,'d'): /* delay for bitmap updates */
 747                 case O(CREATE,'d'):
 748                         if (delay)
 749                                 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
 750                                         optarg);
 751                         else {
 752                                 delay = strtol(optarg, &c, 10);
 753                                 if (!optarg[0] || *c || delay<1) {
 754                                         fprintf(stderr, Name ": invalid delay: %s\n",
 755                                                 optarg);
 756                                         exit(2);
 757                                 }
 758                         }
 759                         continue;
 760                 case O(MONITOR,'f'): /* daemonise */
 761                         daemonise = 1;
 762                         continue;
 763                 case O(MONITOR,'i'): /* pid */
 764                         if (pidfile)
 765                                 fprintf(stderr, Name ": only specify one pid file. %s ignored.\n",
 766                                         optarg);
 767                         else
 768                                 pidfile = optarg;
 769                         continue;
 770                 case O(MONITOR,'1'): /* oneshot */
 771                         oneshot = 1;
 772                         continue;
 773                 case O(MONITOR,'t'): /* test */
 774                         test = 1;
 775                         continue;
 776                 case O(MONITOR,'y'): /* log messages to syslog */
 777                         openlog("mdadm", LOG_PID, SYSLOG_FACILITY);
 778                         dosyslog = 1;
 779                         continue;
 780
 781                         /* now the general management options.  Some are applicable
 782                          * to other modes. None have arguments.
 783                          */
 784                 case O(GROW,'a'):
 785                 case O(MANAGE,'a'): /* add a drive */
 786                         devmode = 'a';
 787                         re_add = 0;
 788                         continue;
 789                 case O(MANAGE,ReAdd):
 790                         devmode = 'a';
 791                         re_add = 1;
 792                         continue;
 793                 case O(MANAGE,'r'): /* remove a drive */
 794                         devmode = 'r';
 795                         continue;
 796                 case O(MANAGE,'f'): /* set faulty */
 797                 case O(INCREMENTAL,'f'): /* r for incremental is taken, use f
 798                                           * even though we will both fail and
 799                                           * remove the device */
 800                         devmode = 'f';
 801                         continue;
 802                 case O(INCREMENTAL,'R'):
 803                 case O(MANAGE,'R'):
 804                 case O(ASSEMBLE,'R'):
 805                 case O(BUILD,'R'):
 806                 case O(CREATE,'R'): /* Run the array */
 807                         if (runstop < 0) {
 808                                 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
 809                                 exit(2);
 810                         }
 811                         runstop = 1;
 812                         continue;
 813                 case O(MANAGE,'S'):
 814                         if (runstop > 0) {
 815                                 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
 816                                 exit(2);
 817                         }
 818                         runstop = -1;
 819                         continue;
 820                 case O(MANAGE,'t'):
 821                         test = 1;
 822                         continue;
 823
 824                 case O(MISC,'Q'):
 825                 case O(MISC,'D'):
 826                 case O(MISC,'E'):
 827                 case O(MISC,'K'):
 828                 case O(MISC,'R'):
 829                 case O(MISC,'S'):
 830                 case O(MISC,'X'):
 831                 case O(MISC,'o'):
 832                 case O(MISC,'w'):
 833                 case O(MISC,'W'):
 834                 case O(MISC, Waitclean):
 835                 case O(MISC, DetailPlatform):
 836                 case O(MISC, KillSubarray):
 837                 case O(MISC, UpdateSubarray):
 838                         if (devmode && devmode != opt &&
 839                             (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
 840                                 fprintf(stderr, Name ": --examine/-E cannot be given with ");
 841                                 if (devmode == 'E') {
 842                                         if (option_index >= 0)
 843                                                 fprintf(stderr, "--%s\n",
 844                                                         long_options[option_index].name);
 845                                         else
 846                                                 fprintf(stderr, "-%c\n", opt);
 847                                 } else if (isalpha(devmode))
 848                                         fprintf(stderr, "-%c\n", devmode);
 849                                 else
 850                                         fprintf(stderr, "previous option\n");
 851                                 exit(2);
 852                         }
 853                         devmode = opt;
 854                         continue;
 855                 case O(MISC,'t'):
 856                         test = 1;
 857                         continue;
 858
 859                 case O(MISC, Sparc22):
 860                         if (devmode != 'E') {
 861                                 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
 862                                 exit(2);
 863                         }
 864                         SparcAdjust = 1;
 865                         continue;
 866
 867                 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
 868                         if (!optarg) {
 869                                 fprintf(stderr, Name ": bitmap file needed with -b in --assemble mode\n");
 870                                 exit(2);
 871                         }
 872                         if (strcmp(optarg, "internal")==0) {
 873                                 fprintf(stderr, Name ": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
 874                                 continue;
 875                         }
 876                         bitmap_fd = open(optarg, O_RDWR);
 877                         if (!*optarg || bitmap_fd < 0) {
 878                                 fprintf(stderr, Name ": cannot open bitmap file %s: %s\n", optarg, strerror(errno));
 879                                 exit(2);
 880                         }
 881                         ident.bitmap_fd = bitmap_fd; /* for Assemble */
 882                         continue;
 883
 884                 case O(ASSEMBLE, BackupFile):
 885                 case O(GROW, BackupFile):
 886                         /* Specify a file into which grow might place a backup,
 887                          * or from which assemble might recover a backup
 888                          */
 889                         if (backup_file) {
 890                                 fprintf(stderr, Name ": backup file already specified, rejecting %s\n", optarg);
 891                                 exit(2);
 892                         }
 893                         backup_file = optarg;
 894                         continue;
 895
 896                 case O(BUILD,'b'):
 897                 case O(CREATE,'b'): /* here we create the bitmap */
 898                         if (strcmp(optarg, "none") == 0) {
 899                                 fprintf(stderr, Name ": '--bitmap none' only"
 900                                         " support for --grow\n");
 901                                 exit(2);
 902                         }
 903                         /* FALL THROUGH */
 904                 case O(GROW,'b'):
 905                         if (strcmp(optarg, "internal")== 0 ||
 906                             strcmp(optarg, "none")== 0 ||
 907                             strchr(optarg, '/') != NULL) {
 908                                 bitmap_file = optarg;
 909                                 continue;
 910                         }
 911                         /* probable typo */
 912                         fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n"
 913                                 "       not '%s'\n", optarg);
 914                         exit(2);
 915
 916                 case O(GROW,BitmapChunk):
 917                 case O(BUILD,BitmapChunk):
 918                 case O(CREATE,BitmapChunk): /* bitmap chunksize */
 919                         bitmap_chunk = strtol(optarg, &c, 10);
 920                         if (!optarg[0] || *c || bitmap_chunk < 0 ||
 921                                         bitmap_chunk & (bitmap_chunk - 1)) {
 922                                 fprintf(stderr, Name ": invalid bitmap chunksize: %s\n",
 923                                                 optarg);
 924                                 exit(2);
 925                         }
 926                         /* convert K to B, chunk of 0K means 512B */
 927                         bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
 928                         continue;
 929
 930                 case O(GROW, WriteBehind):
 931                 case O(BUILD, WriteBehind):
 932                 case O(CREATE, WriteBehind): /* write-behind mode */
 933                         write_behind = DEFAULT_MAX_WRITE_BEHIND;
 934                         if (optarg) {
 935                                 write_behind = strtol(optarg, &c, 10);
 936                                 if (write_behind < 0 || *c ||
 937                                     write_behind > 16383) {
 938                                         fprintf(stderr, Name ": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg);
 939                                         exit(2);
 940                                 }
 941                         }
 942                         continue;
 943
 944                 case O(INCREMENTAL, 'r'):
 945                         rebuild_map = 1;
 946                         continue;
 947                 case O(INCREMENTAL, IncrementalPath):
 948                         remove_path = optarg;
 949                         continue;
 950                 }
 951                 /* We have now processed all the valid options. Anything else is
 952                  * an error
 953                  */
 954                 if (option_index > 0)
 955                         fprintf(stderr, Name ":option --%s not valid in %s mode\n",
 956                                 long_options[option_index].name,
 957                                 map_num(modes, mode));
 958                 else
 959                         fprintf(stderr, Name ": option -%c not valid in %s mode\n",
 960                                 opt, map_num(modes, mode));
 961                 exit(2);
 962
 963         }
 964
 965         if (print_help) {
 966                 char *help_text = Help;
 967                 if (print_help == 2)
 968                         help_text = OptionHelp;
 969                 else
 970                         switch (mode) {
 971                         case ASSEMBLE : help_text = Help_assemble; break;
 972                         case BUILD    : help_text = Help_build; break;
 973                         case CREATE   : help_text = Help_create; break;
 974                         case MANAGE   : help_text = Help_manage; break;
 975                         case MISC     : help_text = Help_misc; break;
 976                         case MONITOR  : help_text = Help_monitor; break;
 977                         case GROW     : help_text = Help_grow; break;
 978                         case INCREMENTAL:help_text= Help_incr; break;
 979                         }
 980                 fputs(help_text,stdout);
 981                 exit(0);
 982         }
 983
 984         if (!mode && devs_found) {
 985                 mode = MISC;
 986                 devmode = 'Q';
 987                 if (devlist->disposition == 0)
 988                         devlist->disposition = devmode;
 989         }
 990         if (!mode) {
 991                 fputs(Usage, stderr);
 992                 exit(2);
 993         }
 994
 995         if (symlinks) {
 996                 struct createinfo *ci = conf_get_create_info();
 997
 998                 if (strcasecmp(symlinks, "yes") == 0)
 999                         ci->symlinks = 1;
1000                 else if (strcasecmp(symlinks, "no") == 0)
1001                         ci->symlinks = 0;
1002                 else {
1003                         fprintf(stderr, Name ": option --symlinks must be 'no' or 'yes'\n");
1004                         exit(2);
1005                 }
1006         }
1007         /* Ok, got the option parsing out of the way
1008          * hopefully it's mostly right but there might be some stuff
1009          * missing
1010          *
1011          * That is mosty checked in the per-mode stuff but...
1012          *
1013          * For @,B,C  and A without -s, the first device listed must be an md device
1014          * we check that here and open it.
1015          */
1016
1017         if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
1018             (mode == ASSEMBLE && ! scan)) {
1019                 if (devs_found < 1) {
1020                         fprintf(stderr, Name ": an md device must be given in this mode\n");
1021                         exit(2);
1022                 }
1023                 if ((int)ident.super_minor == -2 && autof) {
1024                         fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
1025                         exit(2);
1026                 }
1027                 if (mode == MANAGE || mode == GROW) {
1028                         mdfd = open_mddev(devlist->devname, 1);
1029                         if (mdfd < 0)
1030                                 exit(1);
1031                 } else
1032                         /* non-existent device is OK */
1033                         mdfd = open_mddev(devlist->devname, 0);
1034                 if (mdfd == -2) {
1035                         fprintf(stderr, Name ": device %s exists but is not an "
1036                                 "md array.\n", devlist->devname);
1037                         exit(1);
1038                 }
1039                 if ((int)ident.super_minor == -2) {
1040                         struct stat stb;
1041                         if (mdfd < 0) {
1042                                 fprintf(stderr, Name ": --super-minor=dev given, and "
1043                                         "listed device %s doesn't exist.\n",
1044                                         devlist->devname);
1045                                 exit(1);
1046                         }
1047                         fstat(mdfd, &stb);
1048                         ident.super_minor = minor(stb.st_rdev);
1049                 }
1050                 if (mdfd >= 0 && mode != MANAGE && mode != GROW) {
1051                         /* We don't really want this open yet, we just might
1052                          * have wanted to check some things
1053                          */
1054                         close(mdfd);
1055                         mdfd = -1;
1056                 }
1057         }
1058
1059         if (raiddisks) {
1060                 if (raiddisks > max_disks) {
1061                         fprintf(stderr, Name ": invalid number of raid devices: %d\n",
1062                                 raiddisks);
1063                         exit(2);
1064                 }
1065                 if (raiddisks == 1 &&  !force && level != -5) {
1066                         fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
1067                                 "     a mistake.  If you really mean it you will need to specify --force before\n"
1068                                 "     setting the number of drives.\n");
1069                         exit(2);
1070                 }
1071         }
1072         if (sparedisks) {
1073                 if ( sparedisks > max_disks - raiddisks) {
1074                         fprintf(stderr, Name ": invalid number of spare-devices: %d\n",
1075                                 sparedisks);
1076                         exit(2);
1077                 }
1078         }
1079
1080         if (homehost == NULL)
1081                 homehost = conf_get_homehost(&require_homehost);
1082         if (homehost == NULL || strcmp(homehost, "<system>")==0) {
1083                 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
1084                         sys_hostname[sizeof(sys_hostname)-1] = 0;
1085                         homehost = sys_hostname;
1086                 }
1087         }
1088
1089         if ((mode != MISC || devmode != 'E') &&
1090             geteuid() != 0) {
1091                 fprintf(stderr, Name ": must be super-user to perform this action\n");
1092                 exit(1);
1093         }
1094
1095         ident.autof = autof;
1096
1097         rv = 0;
1098         switch(mode) {
1099         case MANAGE:
1100                 /* readonly, add/remove, readwrite, runstop */
1101                 if (readonly>0)
1102                         rv = Manage_ro(devlist->devname, mdfd, readonly);
1103                 if (!rv && devs_found>1)
1104                         rv = Manage_subdevs(devlist->devname, mdfd,
1105                                             devlist->next, verbose-quiet, test);
1106                 if (!rv && readonly < 0)
1107                         rv = Manage_ro(devlist->devname, mdfd, readonly);
1108                 if (!rv && runstop)
1109                         rv = Manage_runstop(devlist->devname, mdfd, runstop, quiet);
1110                 break;
1111         case ASSEMBLE:
1112                 if (devs_found == 1 && ident.uuid_set == 0 &&
1113                     ident.super_minor == UnSet && ident.name[0] == 0 && !scan ) {
1114                         /* Only a device has been given, so get details from config file */
1115                         struct mddev_ident *array_ident = conf_get_ident(devlist->devname);
1116                         if (array_ident == NULL) {
1117                                 fprintf(stderr, Name ": %s not identified in config file.\n",
1118                                         devlist->devname);
1119                                 rv |= 1;
1120                                 if (mdfd >= 0)
1121                                         close(mdfd);
1122                         } else {
1123                                 if (array_ident->autof == 0)
1124                                         array_ident->autof = autof;
1125                                 rv |= Assemble(ss, devlist->devname, array_ident,
1126                                                NULL, backup_file,
1127                                                readonly, runstop, update,
1128                                                homehost, require_homehost,
1129                                                verbose-quiet, force);
1130                         }
1131                 } else if (!scan)
1132                         rv = Assemble(ss, devlist->devname, &ident,
1133                                       devlist->next, backup_file,
1134                                       readonly, runstop, update,
1135                                       homehost, require_homehost,
1136                                       verbose-quiet, force);
1137                 else if (devs_found>0) {
1138                         if (update && devs_found > 1) {
1139                                 fprintf(stderr, Name ": can only update a single array at a time\n");
1140                                 exit(1);
1141                         }
1142                         if (backup_file && devs_found > 1) {
1143                                 fprintf(stderr, Name ": can only assemble a single array when providing a backup file.\n");
1144                                 exit(1);
1145                         }
1146                         for (dv = devlist ; dv ; dv=dv->next) {
1147                                 struct mddev_ident *array_ident = conf_get_ident(dv->devname);
1148                                 if (array_ident == NULL) {
1149                                         fprintf(stderr, Name ": %s not identified in config file.\n",
1150                                                 dv->devname);
1151                                         rv |= 1;
1152                                         continue;
1153                                 }
1154                                 if (array_ident->autof == 0)
1155                                         array_ident->autof = autof;
1156                                 rv |= Assemble(ss, dv->devname, array_ident,
1157                                                NULL, backup_file,
1158                                                readonly, runstop, update,
1159                                                homehost, require_homehost,
1160                                                verbose-quiet, force);
1161                         }
1162                 } else {
1163                         struct mddev_ident *a, *array_list =  conf_get_ident(NULL);
1164                         struct mddev_dev *devlist = conf_get_devs();
1165                         int cnt = 0;
1166                         int failures, successes;
1167                         if (devlist == NULL) {
1168                                 fprintf(stderr, Name ": No devices listed in conf file were found.\n");
1169                                 exit(1);
1170                         }
1171                         if (update) {
1172                                 fprintf(stderr, Name ": --update not meaningful with a --scan assembly.\n");
1173                                 exit(1);
1174                         }
1175                         if (backup_file) {
1176                                 fprintf(stderr, Name ": --backup_file not meaningful with a --scan assembly.\n");
1177                                 exit(1);
1178                         }
1179                         for (a = array_list; a ; a = a->next) {
1180                                 a->assembled = 0;
1181                                 if (a->autof == 0)
1182                                         a->autof = autof;
1183                         }
1184                         do {
1185                                 failures = 0;
1186                                 successes = 0;
1187                                 rv = 0;
1188                                 for (a = array_list; a ; a = a->next) {
1189                                         int r;
1190                                         if (a->assembled)
1191                                                 continue;
1192                                         if (a->devname &&
1193                                             strcasecmp(a->devname, "<ignore>") == 0)
1194                                                 continue;
1195
1196                                         r = Assemble(ss, a->devname,
1197                                                      a,
1198                                                      NULL, NULL,
1199                                                      readonly, runstop, NULL,
1200                                                      homehost, require_homehost,
1201                                                      verbose-quiet, force);
1202                                         if (r == 0) {
1203                                                 a->assembled = 1;
1204                                                 successes++;
1205                                         } else
1206                                                 failures++;
1207                                         rv |= r;
1208                                         cnt++;
1209                                 }
1210                         } while (failures && successes);
1211                         if (homehost && cnt == 0) {
1212                                 /* Maybe we can auto-assemble something.
1213                                  * Repeatedly call Assemble in auto-assemble mode
1214                                  * until it fails
1215                                  */
1216                                 int rv2;
1217                                 int acnt;
1218                                 ident.autof = autof;
1219                                 do {
1220                                         struct mddev_dev *devlist = conf_get_devs();
1221                                         acnt = 0;
1222                                         do {
1223                                                 rv2 = Assemble(ss, NULL,
1224                                                                &ident,
1225                                                                devlist, NULL,
1226                                                                readonly, runstop, NULL,
1227                                                                homehost, require_homehost,
1228                                                                verbose-quiet, force);
1229                                                 if (rv2==0) {
1230                                                         cnt++;
1231                                                         acnt++;
1232                                                 }
1233                                                 if (rv2 == 1)
1234                                                         /* found something so even though assembly failed  we
1235                                                          * want to avoid auto-updates
1236                                                          */
1237                                                         auto_update_home = 0;
1238                                         } while (rv2!=2);
1239                                         /* Incase there are stacked devices, we need to go around again */
1240                                 } while (acnt);
1241 #if 0
1242                                 if (cnt == 0 && auto_update_home && homehost) {
1243                                         /* Nothing found, maybe we need to bootstrap homehost info */
1244                                         do {
1245                                                 acnt = 0;
1246                                                 do {
1247                                                         rv2 = Assemble(ss, NULL,
1248                                                                        &ident,
1249                                                                        NULL, NULL,
1250                                                                        readonly, runstop, "homehost",
1251                                                                        homehost, require_homehost,
1252                                                                        verbose-quiet, force);
1253                                                         if (rv2==0) {
1254                                                                 cnt++;
1255                                                                 acnt++;
1256                                                         }
1257                                                 } while (rv2!=2);
1258                                                 /* Incase there are stacked devices, we need to go around again */
1259                                         } while (acnt);
1260                                 }
1261 #endif
1262                                 if (cnt == 0 && rv == 0) {
1263                                         fprintf(stderr, Name ": No arrays found in config file or automatically\n");
1264                                         rv = 1;
1265                                 } else if (cnt)
1266                                         rv = 0;
1267                         } else if (cnt == 0 && rv == 0) {
1268                                 fprintf(stderr, Name ": No arrays found in config file\n");
1269                                 rv = 1;
1270                         }
1271                 }
1272                 break;
1273         case BUILD:
1274                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1275                 if (write_behind && !bitmap_file) {
1276                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1277                         rv = 1;
1278                         break;
1279                 }
1280                 if (raiddisks == 0) {
1281                         fprintf(stderr, Name ": no raid-devices specified.\n");
1282                         rv = 1;
1283                         break;
1284                 }
1285
1286                 if (bitmap_file) {
1287                         if (strcmp(bitmap_file, "internal")==0) {
1288                                 fprintf(stderr, Name ": 'internal' bitmaps not supported with --build\n");
1289                                 rv |= 1;
1290                                 break;
1291                         }
1292                 }
1293                 rv = Build(devlist->devname, chunk, level, layout,
1294                            raiddisks, devlist->next, assume_clean,
1295                            bitmap_file, bitmap_chunk, write_behind,
1296                            delay, verbose-quiet, autof, size);
1297                 break;
1298         case CREATE:
1299                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1300                 if (write_behind && !bitmap_file) {
1301                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1302                         rv = 1;
1303                         break;
1304                 }
1305                 if (raiddisks == 0) {
1306                         fprintf(stderr, Name ": no raid-devices specified.\n");
1307                         rv = 1;
1308                         break;
1309                 }
1310
1311                 rv = Create(ss, devlist->devname, chunk, level, layout, size<0 ? 0 : size,
1312                             raiddisks, sparedisks, ident.name, homehost,
1313                             ident.uuid_set ? ident.uuid : NULL,
1314                             devs_found-1, devlist->next, runstop, verbose-quiet, force, assume_clean,
1315                             bitmap_file, bitmap_chunk, write_behind, delay, autof);
1316                 break;
1317         case MISC:
1318                 if (devmode == 'E') {
1319                         if (devlist == NULL && !scan) {
1320                                 fprintf(stderr, Name ": No devices to examine\n");
1321                                 exit(2);
1322                         }
1323                         if (devlist == NULL)
1324                                 devlist = conf_get_devs();
1325                         if (devlist == NULL) {
1326                                 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1327                                 exit(1);
1328                         }
1329                         if (brief && verbose)
1330                                 brief = 2;
1331                         rv = Examine(devlist, scan?(verbose>1?0:verbose+1):brief,
1332                                      export, scan,
1333                                      SparcAdjust, ss, homehost);
1334                 } else if (devmode == DetailPlatform) {
1335                         rv = Detail_Platform(ss ? ss->ss : NULL, ss ? scan : 1, verbose);
1336                 } else {
1337                         if (devlist == NULL) {
1338                                 if ((devmode=='D' || devmode == Waitclean) && scan) {
1339                                         /* apply --detail or --wait-clean to
1340                                          * all devices in /proc/mdstat
1341                                          */
1342                                         struct mdstat_ent *ms = mdstat_read(0, 1);
1343                                         struct mdstat_ent *e;
1344                                         struct map_ent *map = NULL;
1345                                         int members;
1346                                         int v = verbose>1?0:verbose+1;
1347
1348                                         for (members = 0; members <= 1; members++) {
1349                                         for (e=ms ; e ; e=e->next) {
1350                                                 char *name;
1351                                                 struct map_ent *me;
1352                                                 int member = e->metadata_version &&
1353                                                         strncmp(e->metadata_version,
1354                                                                 "external:/", 10) == 0;
1355                                                 if (members != member)
1356                                                         continue;
1357                                                 me = map_by_devnum(&map, e->devnum);
1358                                                 if (me && me->path
1359                                                     && strcmp(me->path, "/unknown") != 0)
1360                                                         name = me->path;
1361                                                 else
1362                                                         name = get_md_name(e->devnum);
1363
1364                                                 if (!name) {
1365                                                         fprintf(stderr, Name ": cannot find device file for %s\n",
1366                                                                 e->dev);
1367                                                         continue;
1368                                                 }
1369                                                 if (devmode == 'D')
1370                                                         rv |= Detail(name, v,
1371                                                                      export, test,
1372                                                                      homehost);
1373                                                 else
1374                                                         rv |= WaitClean(name, -1, v);
1375                                                 put_md_name(name);
1376                                         }
1377                                         }
1378                                         free_mdstat(ms);
1379                                 } else  if (devmode == 'S' && scan) {
1380                                         /* apply --stop to all devices in /proc/mdstat */
1381                                         /* Due to possible stacking of devices, repeat until
1382                                          * nothing more can be stopped
1383                                          */
1384                                         int progress=1, err;
1385                                         int last = 0;
1386                                         do {
1387                                                 struct mdstat_ent *ms = mdstat_read(0, 0);
1388                                                 struct mdstat_ent *e;
1389
1390                                                 if (!progress) last = 1;
1391                                                 progress = 0; err = 0;
1392                                                 for (e=ms ; e ; e=e->next) {
1393                                                         char *name = get_md_name(e->devnum);
1394
1395                                                         if (!name) {
1396                                                                 fprintf(stderr, Name ": cannot find device file for %s\n",
1397                                                                         e->dev);
1398                                                                 continue;
1399                                                         }
1400                                                         mdfd = open_mddev(name, 1);
1401                                                         if (mdfd >= 0) {
1402                                                                 if (Manage_runstop(name, mdfd, -1, quiet?1:last?0:-1))
1403                                                                         err = 1;
1404                                                                 else
1405                                                                         progress = 1;
1406                                                                 close(mdfd);
1407                                                         }
1408
1409                                                         put_md_name(name);
1410                                                 }
1411                                                 free_mdstat(ms);
1412                                         } while (!last && err);
1413                                         if (err) rv |= 1;
1414                                 } else {
1415                                         fprintf(stderr, Name ": No devices given.\n");
1416                                         exit(2);
1417                                 }
1418                         }
1419                         for (dv=devlist ; dv; dv=dv->next) {
1420                                 switch(dv->disposition) {
1421                                 case 'D':
1422                                         rv |= Detail(dv->devname,
1423                                                      brief?1+verbose:0,
1424                                                      export, test, homehost);
1425                                         continue;
1426                                 case 'K': /* Zero superblock */
1427                                         if (ss)
1428                                                 rv |= Kill(dv->devname, ss, force, quiet,0);
1429                                         else {
1430                                                 int q = quiet;
1431                                                 do {
1432                                                         rv |= Kill(dv->devname, NULL, force, q, 0);
1433                                                         q = 1;
1434                                                 } while (rv == 0);
1435                                                 rv &= ~2;
1436                                         }
1437                                         continue;
1438                                 case 'Q':
1439                                         rv |= Query(dv->devname); continue;
1440                                 case 'X':
1441                                         rv |= ExamineBitmap(dv->devname, brief, ss); continue;
1442                                 case 'W':
1443                                         rv |= Wait(dv->devname); continue;
1444                                 case Waitclean:
1445                                         rv |= WaitClean(dv->devname, -1, verbose-quiet); continue;
1446                                 case KillSubarray:
1447                                         rv |= Kill_subarray(dv->devname, subarray, quiet);
1448                                         continue;
1449                                 case UpdateSubarray:
1450                                         if (update == NULL) {
1451                                                 fprintf(stderr,
1452                                                         Name ": -U/--update must be specified with --update-subarray\n");
1453                                                 rv |= 1;
1454                                                 continue;
1455                                         }
1456                                         rv |= Update_subarray(dv->devname, subarray, update, &ident, quiet);
1457                                         continue;
1458                                 }
1459                                 mdfd = open_mddev(dv->devname, 1);
1460                                 if (mdfd>=0) {
1461                                         switch(dv->disposition) {
1462                                         case 'R':
1463                                                 rv |= Manage_runstop(dv->devname, mdfd, 1, quiet); break;
1464                                         case 'S':
1465                                                 rv |= Manage_runstop(dv->devname, mdfd, -1, quiet); break;
1466                                         case 'o':
1467                                                 rv |= Manage_ro(dv->devname, mdfd, 1); break;
1468                                         case 'w':
1469                                                 rv |= Manage_ro(dv->devname, mdfd, -1); break;
1470                                         }
1471                                         close(mdfd);
1472                                 } else
1473                                         rv |= 1;
1474                         }
1475                 }
1476                 break;
1477         case MONITOR:
1478                 if (!devlist && !scan) {
1479                         fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
1480                         rv = 1;
1481                         break;
1482                 }
1483                 if (pidfile && !daemonise) {
1484                         fprintf(stderr, Name ": Cannot write a pid file when not in daemon mode\n");
1485                         rv = 1;
1486                         break;
1487                 }
1488                 if (delay == 0) {
1489                         if (get_linux_version() > 20616)
1490                                 /* mdstat responds to poll */
1491                                 delay = 1000;
1492                         else
1493                                 delay = 60;
1494                 }
1495                 rv= Monitor(devlist, mailaddr, program,
1496                             delay?delay:60, daemonise, scan, oneshot,
1497                             dosyslog, test, pidfile, increments);
1498                 break;
1499
1500         case GROW:
1501                 if (array_size >= 0) {
1502                         /* alway impose array size first, independent of
1503                          * anything else
1504                          * Do not allow level or raid_disks changes at the
1505                          * same time as that can be irreversibly destructive.
1506                          */
1507                         struct mdinfo sra;
1508                         int err;
1509                         if (raiddisks || level != UnSet) {
1510                                 fprintf(stderr, Name ": cannot change array size in same operation "
1511                                         "as changing raiddisks or level.\n"
1512                                         "    Change size first, then check that data is still intact.\n");
1513                                 rv = 1;
1514                                 break;
1515                         }
1516                         sysfs_init(&sra, mdfd, 0);
1517                         if (array_size == 0)
1518                                 err = sysfs_set_str(&sra, NULL, "array_size", "default");
1519                         else
1520                                 err = sysfs_set_num(&sra, NULL, "array_size", array_size / 2);
1521                         if (err < 0) {
1522                                 if (errno == E2BIG)
1523                                         fprintf(stderr, Name ": --array-size setting"
1524                                                 " is too large.\n");
1525                                 else
1526                                         fprintf(stderr, Name ": current kernel does"
1527                                                 " not support setting --array-size\n");
1528                                 rv = 1;
1529                                 break;
1530                         }
1531                 }
1532                 if (devs_found > 1) {
1533
1534                         /* must be '-a'. */
1535                         if (size >= 0 || raiddisks || chunk || layout_str != NULL || bitmap_file) {
1536                                 fprintf(stderr, Name ": --add cannot be used with other geometry changes in --grow mode\n");
1537                                 rv = 1;
1538                                 break;
1539                         }
1540                         for (dv=devlist->next; dv ; dv=dv->next) {
1541                                 rv = Grow_Add_device(devlist->devname, mdfd, dv->devname);
1542                                 if (rv)
1543                                         break;
1544                         }
1545                 } else if (bitmap_file) {
1546                         if (size >= 0 || raiddisks || chunk || layout_str != NULL) {
1547                                 fprintf(stderr, Name ": --bitmap changes cannot be used with other geometry changes in --grow mode\n");
1548                                 rv = 1;
1549                                 break;
1550                         }
1551                         if (delay == 0)
1552                                 delay = DEFAULT_BITMAP_DELAY;
1553                         rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file,
1554                                             bitmap_chunk, delay, write_behind, force);
1555                 } else if (size >= 0 || raiddisks != 0 || layout_str != NULL
1556                            || chunk != 0 || level != UnSet) {
1557                         rv = Grow_reshape(devlist->devname, mdfd, quiet, backup_file,
1558                                           size, level, layout_str, chunk, raiddisks);
1559                 } else if (array_size < 0)
1560                         fprintf(stderr, Name ": no changes to --grow\n");
1561                 break;
1562         case INCREMENTAL:
1563                 if (rebuild_map) {
1564                         RebuildMap();
1565                 }
1566                 if (scan) {
1567                         if (runstop <= 0) {
1568                                 fprintf(stderr, Name
1569                          ": --incremental --scan meaningless without --run.\n");
1570                                 break;
1571                         }
1572                         if (devmode == 'f') {
1573                                 fprintf(stderr, Name
1574                          ": --incremental --scan --fail not supported.\n");
1575                                 break;
1576                         }
1577                         rv = IncrementalScan(verbose);
1578                 }
1579                 if (!devlist) {
1580                         if (!rebuild_map && !scan) {
1581                                 fprintf(stderr, Name
1582                                         ": --incremental requires a device.\n");
1583                                 rv = 1;
1584                         }
1585                         break;
1586                 }
1587                 if (devlist->next) {
1588                         fprintf(stderr, Name
1589                                ": --incremental can only handle one device.\n");
1590                         rv = 1;
1591                         break;
1592                 }
1593                 if (devmode == 'f')
1594                         rv = IncrementalRemove(devlist->devname, remove_path,
1595                                                verbose-quiet);
1596                 else
1597                         rv = Incremental(devlist->devname, verbose-quiet,
1598                                          runstop, ss, homehost,
1599                                          require_homehost, autof);
1600                 break;
1601         case AUTODETECT:
1602                 autodetect();
1603                 break;
1604         }
1605         exit(rv);
1606 }