mdadm.c

   1 /*
   2  * mdadm - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2006 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@cse.unsw.edu.au>
  23  *    Paper: Neil Brown
  24  *           School of Computer Science and Engineering
  25  *           The University of New South Wales
  26  *           Sydney, 2052
  27  *           Australia
  28  *
  29  *    Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004,
  30  *    Paul Clements, SteelEye Technology, Inc.
  31  */
  32
  33 #include "mdadm.h"
  34 #include "md_p.h"
  35 #include <ctype.h>
  36
  37
  38 int main(int argc, char *argv[])
  39 {
  40         int mode = 0;
  41         int opt;
  42         int option_index;
  43         char *c;
  44         int rv;
  45         int i;
  46
  47         int chunk = 0;
  48         long long size = -1;
  49         int level = UnSet;
  50         int layout = UnSet;
  51         int raiddisks = 0;
  52         int max_disks = MD_SB_DISKS; /* just a default */
  53         int sparedisks = 0;
  54         struct mddev_ident_s ident;
  55         char *configfile = NULL;
  56         char *cp;
  57         char *update = NULL;
  58         int scan = 0;
  59         char devmode = 0;
  60         int runstop = 0;
  61         int readonly = 0;
  62         int write_behind = 0;
  63         int bitmap_fd = -1;
  64         char *bitmap_file = NULL;
  65         char *backup_file = NULL;
  66         int bitmap_chunk = UnSet;
  67         int SparcAdjust = 0;
  68         mddev_dev_t devlist = NULL;
  69         mddev_dev_t *devlistend = & devlist;
  70         mddev_dev_t dv;
  71         int devs_found = 0;
  72         int verbose = 0;
  73         int quiet = 0;
  74         int brief = 0;
  75         int force = 0;
  76         int test = 0;
  77         int export = 0;
  78         int assume_clean = 0;
  79         char *symlinks = NULL;
  80         /* autof indicates whether and how to create device node.
  81          * bottom 3 bits are style.  Rest (when shifted) are number of parts
  82          * 0  - unset
  83          * 1  - don't create (no)
  84          * 2  - if is_standard, then create (yes)
  85          * 3  - create as 'md' - reject is_standard mdp (md)
  86          * 4  - create as 'mdp' - reject is_standard md (mdp)
  87          * 5  - default to md if not is_standard (md in config file)
  88          * 6  - default to mdp if not is_standard (part, or mdp in config file)
  89          */
  90         int autof = 0;
  91
  92         char *homehost = NULL;
  93         char sys_hostname[256];
  94         char *mailaddr = NULL;
  95         char *program = NULL;
  96         int delay = 0;
  97         int daemonise = 0;
  98         char *pidfile = NULL;
  99         int oneshot = 0;
 100         struct supertype *ss = NULL;
 101         int writemostly = 0;
 102         int re_add = 0;
 103         char *shortopt = short_options;
 104         int dosyslog = 0;
 105         int rebuild_map = 0;
 106         int auto_update_home = 0;
 107
 108         int copies;
 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-independant 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                                 break; /* b means bitmap */
 158                         brief = 1;
 159                         if (optarg) {
 160                                 fprintf(stderr, Name ": -b cannot have any extra immediately after it, sorry.\n");
 161                                 exit(2);
 162                         }
 163                         continue;
 164
 165                 case 'Y': export++;
 166                         continue;
 167
 168                 case HomeHost:
 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 'K': if (!mode) newmode = MISC; break;
 221                 }
 222                 if (mode && newmode == mode) {
 223                         /* everybody happy ! */
 224                 } else if (mode && newmode != mode) {
 225                         /* not allowed.. */
 226                         fprintf(stderr, Name ": ");
 227                         if (option_index >= 0)
 228                                 fprintf(stderr, "--%s", long_options[option_index].name);
 229                         else
 230                                 fprintf(stderr, "-%c", opt);
 231                         fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
 232                                 map_num(modes, newmode),
 233                                 map_num(modes, mode));
 234                         exit(2);
 235                 } else if (!mode && newmode) {
 236                         mode = newmode;
 237                 } else {
 238                         /* special case of -c --help */
 239                         if (opt == 'c' &&
 240                             ( strncmp(optarg, "--h", 3)==0 ||
 241                               strncmp(optarg, "-h", 2)==0)) {
 242                                 fputs(Help_config, stdout);
 243                                 exit(0);
 244                         }
 245
 246                         /* If first option is a device, don't force the mode yet */
 247                         if (opt == 1) {
 248                                 if (devs_found == 0) {
 249                                         dv = malloc(sizeof(*dv));
 250                                         if (dv == NULL) {
 251                                                 fprintf(stderr, Name ": malloc failed\n");
 252                                                 exit(3);
 253                                         }
 254                                         dv->devname = optarg;
 255                                         dv->disposition = devmode;
 256                                         dv->writemostly = writemostly;
 257                                         dv->re_add = re_add;
 258                                         dv->used = 0;
 259                                         dv->next = NULL;
 260                                         *devlistend = dv;
 261                                         devlistend = &dv->next;
 262
 263                                         devs_found++;
 264                                         continue;
 265                                 }
 266                                 /* No mode yet, and this is the second device ... */
 267                                 fprintf(stderr, Name ": An option must be given to set the mode before a second device is listed\n");
 268                                 exit(2);
 269                         }
 270                         if (option_index >= 0)
 271                                 fprintf(stderr, Name ": --%s", long_options[option_index].name);
 272                         else
 273                                 fprintf(stderr, Name ": -%c", opt);
 274                         fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
 275                         exit(2);
 276                 }
 277
 278                 /* if we just set the mode, then done */
 279                 switch(opt) {
 280                 case '@':
 281                 case '#':
 282                 case 'A':
 283                 case 'B':
 284                 case 'C':
 285                 case 'F':
 286                 case 'G':
 287                 case 'I':
 288                 case AutoDetect:
 289                         continue;
 290                 }
 291                 if (opt == 1) {
 292                         /* an undecorated option - must be a device name.
 293                          */
 294                         if (devs_found > 0 && mode == '@' && !devmode) {
 295                                 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
 296                                 exit(2);
 297                         }
 298                         if (devs_found > 0 && mode == 'G' && !devmode) {
 299                                 fprintf(stderr, Name ": Must give one of -a for devices do add: %s\n", optarg);
 300                                 exit(2);
 301                         }
 302                         dv = malloc(sizeof(*dv));
 303                         if (dv == NULL) {
 304                                 fprintf(stderr, Name ": malloc failed\n");
 305                                 exit(3);
 306                         }
 307                         dv->devname = optarg;
 308                         dv->disposition = devmode;
 309                         dv->writemostly = writemostly;
 310                         dv->re_add = re_add;
 311                         dv->next = NULL;
 312                         *devlistend = dv;
 313                         devlistend = &dv->next;
 314
 315                         devs_found++;
 316                         continue;
 317                 }
 318
 319                 /* We've got a mode, and opt is now something else which
 320                  * could depend on the mode */
 321 #define O(a,b) ((a<<8)|b)
 322                 switch (O(mode,opt)) {
 323                 case O(CREATE,'c'):
 324                 case O(BUILD,'c'): /* chunk or rounding */
 325                         if (chunk) {
 326                                 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
 327                                         "Second value is %s.\n", optarg);
 328                                 exit(2);
 329                         }
 330                         chunk = strtol(optarg, &c, 10);
 331                         if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
 332                                 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
 333                                         optarg);
 334                                 exit(2);
 335                         }
 336                         continue;
 337
 338                 case O(ASSEMBLE,AutoHomeHost):
 339                         auto_update_home = 1;
 340                         continue;
 341                 case O(INCREMENTAL, 'e'):
 342                 case O(CREATE,'e'):
 343                 case O(ASSEMBLE,'e'):
 344                 case O(MISC,'e'): /* set metadata (superblock) information */
 345                         if (ss) {
 346                                 fprintf(stderr, Name ": metadata information already given\n");
 347                                 exit(2);
 348                         }
 349                         for(i=0; !ss && superlist[i]; i++)
 350                                 ss = superlist[i]->match_metadata_desc(optarg);
 351
 352                         if (!ss) {
 353                                 fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
 354                                 exit(2);
 355                         }
 356                         max_disks = ss->max_devs;
 357                         continue;
 358
 359                 case O(MANAGE,'W'):
 360                 case O(BUILD,'W'):
 361                 case O(CREATE,'W'):
 362                         /* set write-mostly for following devices */
 363                         writemostly = 1;
 364                         continue;
 365
 366                 case O(MANAGE,'w'):
 367                         /* clear write-mostly for following devices */
 368                         writemostly = 2;
 369                         continue;
 370
 371
 372                 case O(GROW,'z'):
 373                 case O(CREATE,'z'): /* size */
 374                         if (size >= 0) {
 375                                 fprintf(stderr, Name ": size may only be specified once. "
 376                                         "Second value is %s.\n", optarg);
 377                                 exit(2);
 378                         }
 379                         if (strcmp(optarg, "max")==0)
 380                                 size = 0;
 381                         else {
 382                                 size = strtoll(optarg, &c, 10);
 383                                 if (!optarg[0] || *c || size < 4) {
 384                                         fprintf(stderr, Name ": invalid size: %s\n",
 385                                                 optarg);
 386                                         exit(2);
 387                                 }
 388                         }
 389                         continue;
 390
 391                 case O(GROW,'l'): /* hack - needed to understand layout */
 392                 case O(CREATE,'l'):
 393                 case O(BUILD,'l'): /* set raid level*/
 394                         if (level != UnSet) {
 395                                 fprintf(stderr, Name ": raid level may only be set once.  "
 396                                         "Second value is %s.\n", optarg);
 397                                 exit(2);
 398                         }
 399                         level = map_name(pers, optarg);
 400                         if (level == UnSet) {
 401                                 fprintf(stderr, Name ": invalid raid level: %s\n",
 402                                         optarg);
 403                                 exit(2);
 404                         }
 405                         if (level != 0 && level != -1 && level != 1 && level != -4 && level != -5 && mode == BUILD) {
 406                                 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
 407                                         optarg);
 408                                 exit(2);
 409                         }
 410                         if (sparedisks > 0 && level < 1 && level >= -1) {
 411                                 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
 412                                         optarg);
 413                                 exit(2);
 414                         }
 415                         ident.level = level;
 416                         continue;
 417
 418                 case O(CREATE,'p'): /* raid5 layout */
 419                 case O(BUILD,'p'): /* faulty layout */
 420                 case O(GROW, 'p'): /* faulty reconfig */
 421                         if (layout != UnSet) {
 422                                 fprintf(stderr,Name ": layout may only be sent once.  "
 423                                         "Second value was %s\n", optarg);
 424                                 exit(2);
 425                         }
 426                         switch(level) {
 427                         default:
 428                                 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
 429                                         map_num(pers, level));
 430                                 exit(2);
 431                         case UnSet:
 432                                 fprintf(stderr, Name ": raid level must be given before layout.\n");
 433                                 exit(2);
 434
 435                         case 5:
 436                         case 6:
 437                                 layout = map_name(r5layout, optarg);
 438                                 if (layout==UnSet) {
 439                                         fprintf(stderr, Name ": layout %s not understood for raid5.\n",
 440                                                 optarg);
 441                                         exit(2);
 442                                 }
 443                                 break;
 444
 445                         case 10:
 446                                 /* 'f', 'o' or 'n' followed by a number <= raid_disks */
 447                                 if ((optarg[0] !=  'n' && optarg[0] != 'f' && optarg[0] != 'o') ||
 448                                     (copies = strtoul(optarg+1, &cp, 10)) < 1 ||
 449                                     copies > 200 ||
 450                                     *cp) {
 451                                         fprintf(stderr, Name ": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
 452                                         exit(2);
 453                                 }
 454                                 if (optarg[0] == 'n')
 455                                         layout = 256 + copies;
 456                                 else if (optarg[0] == 'o')
 457                                         layout = 0x10000 + (copies<<8) + 1;
 458                                 else
 459                                         layout = 1 + (copies<<8);
 460                                 break;
 461                         case -5: /* Faulty
 462                                   * modeNNN
 463                                   */
 464
 465                         {
 466                                 int ln = strcspn(optarg, "0123456789");
 467                                 char *m = strdup(optarg);
 468                                 int mode;
 469                                 m[ln] = 0;
 470                                 mode = map_name(faultylayout, m);
 471                                 if (mode == UnSet) {
 472                                         fprintf(stderr, Name ": layout %s not understood for faulty.\n",
 473                                                 optarg);
 474                                         exit(2);
 475                                 }
 476                                 layout = mode | (atoi(optarg+ln)<< ModeShift);
 477                         }
 478                         }
 479                         continue;
 480
 481                 case O(CREATE,AssumeClean):
 482                 case O(BUILD,AssumeClean): /* assume clean */
 483                         assume_clean = 1;
 484                         continue;
 485
 486                 case O(GROW,'n'):
 487                 case O(CREATE,'n'):
 488                 case O(BUILD,'n'): /* number of raid disks */
 489                         if (raiddisks) {
 490                                 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
 491                                         raiddisks, optarg);
 492                                 exit(2);
 493                         }
 494                         raiddisks = strtol(optarg, &c, 10);
 495                         if (!optarg[0] || *c || raiddisks<=0) {
 496                                 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
 497                                         optarg);
 498                                 exit(2);
 499                         }
 500                         ident.raid_disks = raiddisks;
 501                         continue;
 502
 503                 case O(CREATE,'x'): /* number of spare (eXtra) discs */
 504                         if (sparedisks) {
 505                                 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
 506                                         sparedisks, optarg);
 507                                 exit(2);
 508                         }
 509                         if (level != UnSet && level <= 0 && level >= -1) {
 510                                 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
 511                                         level);
 512                                 exit(2);
 513                         }
 514                         sparedisks = strtol(optarg, &c, 10);
 515                         if (!optarg[0] || *c || sparedisks < 0) {
 516                                 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
 517                                         optarg);
 518                                 exit(2);
 519                         }
 520                         continue;
 521
 522                 case O(CREATE,'a'):
 523                 case O(BUILD,'a'):
 524                 case O(INCREMENTAL,'a'):
 525                 case O(ASSEMBLE,'a'): /* auto-creation of device node */
 526                         autof = parse_auto(optarg, "--auto flag", 0);
 527                         continue;
 528
 529                 case O(CREATE,Symlinks):
 530                 case O(BUILD,Symlinks):
 531                 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
 532                         symlinks = optarg;
 533                         continue;
 534
 535                 case O(BUILD,'f'): /* force honouring '-n 1' */
 536                 case O(GROW,'f'): /* ditto */
 537                 case O(CREATE,'f'): /* force honouring of device list */
 538                 case O(ASSEMBLE,'f'): /* force assembly */
 539                 case O(MISC,'f'): /* force zero */
 540                         force=1;
 541                         continue;
 542
 543                         /* now for the Assemble options */
 544                 case O(CREATE,'u'): /* uuid of array */
 545                 case O(ASSEMBLE,'u'): /* uuid of array */
 546                         if (ident.uuid_set) {
 547                                 fprintf(stderr, Name ": uuid cannot be set twice.  "
 548                                         "Second value %s.\n", optarg);
 549                                 exit(2);
 550                         }
 551                         if (parse_uuid(optarg, ident.uuid))
 552                                 ident.uuid_set = 1;
 553                         else {
 554                                 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
 555                                 exit(2);
 556                         }
 557                         continue;
 558
 559                 case O(CREATE,'N'):
 560                 case O(ASSEMBLE,'N'):
 561                         if (ident.name[0]) {
 562                                 fprintf(stderr, Name ": name cannot be set twice.   "
 563                                         "Second value %s.\n", optarg);
 564                                 exit(2);
 565                         }
 566                         if (strlen(optarg) > 32) {
 567                                 fprintf(stderr, Name ": name '%s' is too long, 32 chars max.\n",
 568                                         optarg);
 569                                 exit(2);
 570                         }
 571                         strcpy(ident.name, optarg);
 572                         continue;
 573
 574                 case O(ASSEMBLE,'m'): /* super-minor for array */
 575                         if (ident.super_minor != UnSet) {
 576                                 fprintf(stderr, Name ": super-minor cannot be set twice.  "
 577                                         "Second value: %s.\n", optarg);
 578                                 exit(2);
 579                         }
 580                         if (strcmp(optarg, "dev")==0)
 581                                 ident.super_minor = -2;
 582                         else {
 583                                 ident.super_minor = strtoul(optarg, &cp, 10);
 584                                 if (!optarg[0] || *cp) {
 585                                         fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
 586                                         exit(2);
 587                                 }
 588                         }
 589                         continue;
 590
 591                 case O(ASSEMBLE,'U'): /* update the superblock */
 592                         if (update) {
 593                                 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
 594                                         update, optarg);
 595                                 exit(2);
 596                         }
 597                         update = optarg;
 598                         if (strcmp(update, "sparc2.2")==0)
 599                                 continue;
 600                         if (strcmp(update, "super-minor") == 0)
 601                                 continue;
 602                         if (strcmp(update, "summaries")==0)
 603                                 continue;
 604                         if (strcmp(update, "resync")==0)
 605                                 continue;
 606                         if (strcmp(update, "uuid")==0)
 607                                 continue;
 608                         if (strcmp(update, "name")==0)
 609                                 continue;
 610                         if (strcmp(update, "homehost")==0)
 611                                 continue;
 612                         if (strcmp(update, "devicesize")==0)
 613                                 continue;
 614                         if (strcmp(update, "byteorder")==0) {
 615                                 if (ss) {
 616                                         fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");
 617                                         exit(2);
 618                                 }
 619                                 for(i=0; !ss && superlist[i]; i++)
 620                                         ss = superlist[i]->match_metadata_desc("0.swap");
 621                                 if (!ss) {
 622                                         fprintf(stderr, Name ": INTERNAL ERROR cannot find 0.swap\n");
 623                                         exit(2);
 624                                 }
 625
 626                                 continue;
 627                         }
 628                         if (strcmp(update,"?") == 0 ||
 629                             strcmp(update, "help") == 0) {
 630                                 outf = stdout;
 631                                 fprintf(outf, Name ": ");
 632                         } else {
 633                                 outf = stderr;
 634                                 fprintf(outf,
 635                                         Name ": '--update=%s' is invalid.  ",
 636                                         update);
 637                         }
 638                         fprintf(outf, "Valid --update options are:\n"
 639                 "     'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
 640                 "     'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
 641                         exit(outf == stdout ? 0 : 2);
 642
 643                 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
 644                         runstop = -1; /* --stop isn't allowed for --assemble,
 645                                        * so we overload slightly */
 646                         continue;
 647
 648                 case O(ASSEMBLE,'c'): /* config file */
 649                 case O(INCREMENTAL, 'c'):
 650                 case O(MISC, 'c'):
 651                 case O(MONITOR,'c'):
 652                         if (configfile) {
 653                                 fprintf(stderr, Name ": configfile cannot be set twice.  "
 654                                         "Second value is %s.\n", optarg);
 655                                 exit(2);
 656                         }
 657                         configfile = optarg;
 658                         set_conffile(configfile);
 659                         /* FIXME possibly check that config file exists.  Even parse it */
 660                         continue;
 661                 case O(ASSEMBLE,'s'): /* scan */
 662                 case O(MISC,'s'):
 663                 case O(MONITOR,'s'):
 664                 case O(INCREMENTAL,'s'):
 665                         scan = 1;
 666                         continue;
 667
 668                 case O(MONITOR,'m'): /* mail address */
 669                         if (mailaddr)
 670                                 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
 671                                         optarg);
 672                         else
 673                                 mailaddr = optarg;
 674                         continue;
 675
 676                 case O(MONITOR,'p'): /* alert program */
 677                         if (program)
 678                                 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
 679                                         optarg);
 680                         else
 681                                 program = optarg;
 682                         continue;
 683
 684                 case O(MONITOR,'d'): /* delay in seconds */
 685                 case O(GROW, 'd'):
 686                 case O(BUILD,'d'): /* delay for bitmap updates */
 687                 case O(CREATE,'d'):
 688                         if (delay)
 689                                 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
 690                                         optarg);
 691                         else {
 692                                 delay = strtol(optarg, &c, 10);
 693                                 if (!optarg[0] || *c || delay<1) {
 694                                         fprintf(stderr, Name ": invalid delay: %s\n",
 695                                                 optarg);
 696                                         exit(2);
 697                                 }
 698                         }
 699                         continue;
 700                 case O(MONITOR,'f'): /* daemonise */
 701                         daemonise = 1;
 702                         continue;
 703                 case O(MONITOR,'i'): /* pid */
 704                         if (pidfile)
 705                                 fprintf(stderr, Name ": only specify one pid file. %s ignored.\n",
 706                                         optarg);
 707                         else
 708                                 pidfile = optarg;
 709                         continue;
 710                 case O(MONITOR,'1'): /* oneshot */
 711                         oneshot = 1;
 712                         continue;
 713                 case O(MONITOR,'t'): /* test */
 714                         test = 1;
 715                         continue;
 716                 case O(MONITOR,'y'): /* log messages to syslog */
 717                         openlog("mdadm", LOG_PID, SYSLOG_FACILITY);
 718                         dosyslog = 1;
 719                         continue;
 720
 721                         /* now the general management options.  Some are applicable
 722                          * to other modes. None have arguments.
 723                          */
 724                 case O(GROW,'a'):
 725                 case O(MANAGE,'a'): /* add a drive */
 726                         devmode = 'a';
 727                         re_add = 0;
 728                         continue;
 729                 case O(MANAGE,ReAdd):
 730                         devmode = 'a';
 731                         re_add = 1;
 732                         continue;
 733                 case O(MANAGE,'r'): /* remove a drive */
 734                         devmode = 'r';
 735                         continue;
 736                 case O(MANAGE,'f'): /* set faulty */
 737                         devmode = 'f';
 738                         continue;
 739                 case O(INCREMENTAL,'R'):
 740                 case O(MANAGE,'R'):
 741                 case O(ASSEMBLE,'R'):
 742                 case O(BUILD,'R'):
 743                 case O(CREATE,'R'): /* Run the array */
 744                         if (runstop < 0) {
 745                                 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
 746                                 exit(2);
 747                         }
 748                         runstop = 1;
 749                         continue;
 750                 case O(MANAGE,'S'):
 751                         if (runstop > 0) {
 752                                 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
 753                                 exit(2);
 754                         }
 755                         runstop = -1;
 756                         continue;
 757
 758                 case O(MISC,'Q'):
 759                 case O(MISC,'D'):
 760                 case O(MISC,'E'):
 761                 case O(MISC,'K'):
 762                 case O(MISC,'R'):
 763                 case O(MISC,'S'):
 764                 case O(MISC,'X'):
 765                 case O(MISC,'o'):
 766                 case O(MISC,'w'):
 767                 case O(MISC,'W'):
 768                 case O(MISC, Waitclean):
 769                         if (devmode && devmode != opt &&
 770                             (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
 771                                 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
 772                                         devmode =='E'?opt:devmode);
 773                                 exit(2);
 774                         }
 775                         devmode = opt;
 776                         continue;
 777                 case O(MISC,'t'):
 778                         test = 1;
 779                         continue;
 780
 781                 case O(MISC, Sparc22):
 782                         if (devmode != 'E') {
 783                                 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
 784                                 exit(2);
 785                         }
 786                         SparcAdjust = 1;
 787                         continue;
 788
 789                 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
 790                         if (!optarg) {
 791                                 fprintf(stderr, Name ": bitmap file needed with -b in --assemble mode\n");
 792                                 exit(2);
 793                         }
 794                         if (strcmp(optarg, "internal")==0) {
 795                                 fprintf(stderr, Name ": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
 796                                 continue;
 797                         }
 798                         bitmap_fd = open(optarg, O_RDWR);
 799                         if (!*optarg || bitmap_fd < 0) {
 800                                 fprintf(stderr, Name ": cannot open bitmap file %s: %s\n", optarg, strerror(errno));
 801                                 exit(2);
 802                         }
 803                         ident.bitmap_fd = bitmap_fd; /* for Assemble */
 804                         continue;
 805
 806                 case O(ASSEMBLE, BackupFile):
 807                 case O(GROW, BackupFile):
 808                         /* Specify a file into which grow might place a backup,
 809                          * or from which assemble might recover a backup
 810                          */
 811                         if (backup_file) {
 812                                 fprintf(stderr, Name ": backup file already specified, rejecting %s\n", optarg);
 813                                 exit(2);
 814                         }
 815                         backup_file = optarg;
 816                         continue;
 817
 818                 case O(BUILD,'b'):
 819                 case O(CREATE,'b'): /* here we create the bitmap */
 820                         if (strcmp(optarg, "none") == 0) {
 821                                 fprintf(stderr, Name ": '--bitmap none' only"
 822                                         " support for --grow\n");
 823                                 exit(2);
 824                         }
 825                         /* FALL THROUGH */
 826                 case O(GROW,'b'):
 827                         if (strcmp(optarg, "internal")== 0 ||
 828                             strcmp(optarg, "none")== 0 ||
 829                             strchr(optarg, '/') != NULL) {
 830                                 bitmap_file = optarg;
 831                                 continue;
 832                         }
 833                         /* probable typo */
 834                         fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n");
 835                         exit(2);
 836
 837                 case O(GROW,BitmapChunk):
 838                 case O(BUILD,BitmapChunk):
 839                 case O(CREATE,BitmapChunk): /* bitmap chunksize */
 840                         bitmap_chunk = strtol(optarg, &c, 10);
 841                         if (!optarg[0] || *c || bitmap_chunk < 0 ||
 842                                         bitmap_chunk & (bitmap_chunk - 1)) {
 843                                 fprintf(stderr, Name ": invalid bitmap chunksize: %s\n",
 844                                                 optarg);
 845                                 exit(2);
 846                         }
 847                         /* convert K to B, chunk of 0K means 512B */
 848                         bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
 849                         continue;
 850
 851                 case O(GROW, WriteBehind):
 852                 case O(BUILD, WriteBehind):
 853                 case O(CREATE, WriteBehind): /* write-behind mode */
 854                         write_behind = DEFAULT_MAX_WRITE_BEHIND;
 855                         if (optarg) {
 856                                 write_behind = strtol(optarg, &c, 10);
 857                                 if (write_behind < 0 || *c ||
 858                                     write_behind > 16383) {
 859                                         fprintf(stderr, Name ": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg);
 860                                         exit(2);
 861                                 }
 862                         }
 863                         continue;
 864
 865                 case O(INCREMENTAL, 'r'):
 866                         rebuild_map = 1;
 867                         continue;
 868                 }
 869                 /* We have now processed all the valid options. Anything else is
 870                  * an error
 871                  */
 872                 if (option_index > 0)
 873                         fprintf(stderr, Name ":option --%s not valid in %s mode\n",
 874                                 long_options[option_index].name,
 875                                 map_num(modes, mode));
 876                 else
 877                         fprintf(stderr, Name ": option -%c not valid in %s mode\n",
 878                                 opt, map_num(modes, mode));
 879                 exit(2);
 880
 881         }
 882
 883         if (print_help) {
 884                 char *help_text = Help;
 885                 if (print_help == 2)
 886                         help_text = OptionHelp;
 887                 else
 888                         switch (mode) {
 889                         case ASSEMBLE : help_text = Help_assemble; break;
 890                         case BUILD    : help_text = Help_build; break;
 891                         case CREATE   : help_text = Help_create; break;
 892                         case MANAGE   : help_text = Help_manage; break;
 893                         case MISC     : help_text = Help_misc; break;
 894                         case MONITOR  : help_text = Help_monitor; break;
 895                         case GROW     : help_text = Help_grow; break;
 896                         case INCREMENTAL:help_text= Help_incr; break;
 897                         }
 898                 fputs(help_text,stdout);
 899                 exit(0);
 900         }
 901
 902         if (!mode && devs_found) {
 903                 mode = MISC;
 904                 devmode = 'Q';
 905                 if (devlist->disposition == 0)
 906                         devlist->disposition = devmode;
 907         }
 908         if (!mode) {
 909                 fputs(Usage, stderr);
 910                 exit(2);
 911         }
 912
 913         if (symlinks) {
 914                 struct createinfo *ci = conf_get_create_info();
 915
 916                 if (strcasecmp(symlinks, "yes") == 0)
 917                         ci->symlinks = 1;
 918                 else if (strcasecmp(symlinks, "no") == 0)
 919                         ci->symlinks = 0;
 920                 else {
 921                         fprintf(stderr, Name ": option --symlinks must be 'no' or 'yes'\n");
 922                         exit(2);
 923                 }
 924         }
 925         /* Ok, got the option parsing out of the way
 926          * hopefully it's mostly right but there might be some stuff
 927          * missing
 928          *
 929          * That is mosty checked in the per-mode stuff but...
 930          *
 931          * For @,B,C  and A without -s, the first device listed must be an md device
 932          * we check that here and open it.
 933          */
 934
 935         if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
 936             (mode == ASSEMBLE && ! scan)) {
 937                 if (devs_found < 1) {
 938                         fprintf(stderr, Name ": an md device must be given in this mode\n");
 939                         exit(2);
 940                 }
 941                 if ((int)ident.super_minor == -2 && autof) {
 942                         fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
 943                         exit(2);
 944                 }
 945                 if (mode == MANAGE || mode == GROW)
 946                         autof=1; /* Don't create */
 947                 mdfd = open_mddev(devlist->devname, autof);
 948                 if (mdfd < 0)
 949                         exit(1);
 950                 if ((int)ident.super_minor == -2) {
 951                         struct stat stb;
 952                         fstat(mdfd, &stb);
 953                         ident.super_minor = minor(stb.st_rdev);
 954                 }
 955         }
 956
 957         if (raiddisks) {
 958                 if (raiddisks > max_disks) {
 959                         fprintf(stderr, Name ": invalid number of raid devices: %d\n",
 960                                 raiddisks);
 961                         exit(2);
 962                 }
 963                 if (raiddisks == 1 &&  !force && level != -5) {
 964                         fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
 965                                 "     a mistake.  If you really mean it you will need to specify --force before\n"
 966                                 "     setting the number of drives.\n");
 967                         exit(2);
 968                 }
 969         }
 970         if (sparedisks) {
 971                 if ( sparedisks > max_disks - raiddisks) {
 972                         fprintf(stderr, Name ": invalid number of spare-devices: %d\n",
 973                                 sparedisks);
 974                         exit(2);
 975                 }
 976         }
 977
 978         if (homehost == NULL)
 979                 homehost = conf_get_homehost();
 980         if (homehost && strcmp(homehost, "<system>")==0) {
 981                 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
 982                         sys_hostname[sizeof(sys_hostname)-1] = 0;
 983                         homehost = sys_hostname;
 984                 }
 985         }
 986
 987         rv = 0;
 988         switch(mode) {
 989         case MANAGE:
 990                 /* readonly, add/remove, readwrite, runstop */
 991                 if (readonly>0)
 992                         rv = Manage_ro(devlist->devname, mdfd, readonly);
 993                 if (!rv && devs_found>1)
 994                         rv = Manage_subdevs(devlist->devname, mdfd,
 995                                             devlist->next, verbose-quiet);
 996                 if (!rv && readonly < 0)
 997                         rv = Manage_ro(devlist->devname, mdfd, readonly);
 998                 if (!rv && runstop)
 999                         rv = Manage_runstop(devlist->devname, mdfd, runstop, quiet);
1000                 break;
1001         case ASSEMBLE:
1002                 if (devs_found == 1 && ident.uuid_set == 0 &&
1003                     ident.super_minor == UnSet && ident.name[0] == 0 && !scan ) {
1004                         /* Only a device has been given, so get details from config file */
1005                         mddev_ident_t array_ident = conf_get_ident(devlist->devname);
1006                         if (array_ident == NULL) {
1007                                 fprintf(stderr, Name ": %s not identified in config file.\n",
1008                                         devlist->devname);
1009                                 rv |= 1;
1010                         } else {
1011                                 mdfd = open_mddev(devlist->devname,
1012                                                   array_ident->autof ? array_ident->autof : autof);
1013                                 if (mdfd < 0)
1014                                         rv |= 1;
1015                                 else {
1016                                         rv |= Assemble(ss, devlist->devname, mdfd, array_ident,
1017                                                        NULL, backup_file,
1018                                                        readonly, runstop, update, homehost, verbose-quiet, force);
1019                                         close(mdfd);
1020                                 }
1021                         }
1022                 } else if (!scan)
1023                         rv = Assemble(ss, devlist->devname, mdfd, &ident,
1024                                       devlist->next, backup_file,
1025                                       readonly, runstop, update, homehost, verbose-quiet, force);
1026                 else if (devs_found>0) {
1027                         if (update && devs_found > 1) {
1028                                 fprintf(stderr, Name ": can only update a single array at a time\n");
1029                                 exit(1);
1030                         }
1031                         if (backup_file && devs_found > 1) {
1032                                 fprintf(stderr, Name ": can only assemble a single array when providing a backup file.\n");
1033                                 exit(1);
1034                         }
1035                         for (dv = devlist ; dv ; dv=dv->next) {
1036                                 mddev_ident_t array_ident = conf_get_ident(dv->devname);
1037                                 if (array_ident == NULL) {
1038                                         fprintf(stderr, Name ": %s not identified in config file.\n",
1039                                                 dv->devname);
1040                                         rv |= 1;
1041                                         continue;
1042                                 }
1043                                 mdfd = open_mddev(dv->devname,
1044                                                   array_ident->autof ?array_ident->autof : autof);
1045                                 if (mdfd < 0) {
1046                                         rv |= 1;
1047                                         continue;
1048                                 }
1049                                 rv |= Assemble(ss, dv->devname, mdfd, array_ident,
1050                                                NULL, backup_file,
1051                                                readonly, runstop, update, homehost, verbose-quiet, force);
1052                                 close(mdfd);
1053                         }
1054                 } else {
1055                         mddev_ident_t array_list =  conf_get_ident(NULL);
1056                         mddev_dev_t devlist = conf_get_devs();
1057                         int cnt = 0;
1058                         if (devlist == NULL) {
1059                                 fprintf(stderr, Name ": No devices listed in conf file were found.\n");
1060                                 exit(1);
1061                         }
1062                         if (update) {
1063                                 fprintf(stderr, Name ": --update not meaningful with a --scan assembly.\n");
1064                                 exit(1);
1065                         }
1066                         if (backup_file) {
1067                                 fprintf(stderr, Name ": --backup_file not meaningful with a --scan assembly.\n");
1068                                 exit(1);
1069                         }
1070                         for (; array_list; array_list = array_list->next) {
1071                                 mdu_array_info_t array;
1072                                 mdfd = open_mddev(array_list->devname,
1073                                                   array_list->autof ? array_list->autof : autof);
1074                                 if (mdfd < 0) {
1075                                         rv |= 1;
1076                                         continue;
1077                                 }
1078                                 if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
1079                                         /* already assembled, skip */
1080                                         cnt++;
1081                                 else {
1082                                         rv |= Assemble(ss, array_list->devname, mdfd,
1083                                                        array_list,
1084                                                        NULL, NULL,
1085                                                        readonly, runstop, NULL, homehost, verbose-quiet, force);
1086                                         if (rv == 0) cnt++;
1087                                 }
1088                                 close(mdfd);
1089                         }
1090                         if (homehost) {
1091                                 /* Maybe we can auto-assemble something.
1092                                  * Repeatedly call Assemble in auto-assmble mode
1093                                  * until it fails
1094                                  */
1095                                 int rv2;
1096                                 int acnt;
1097                                 ident.autof = autof;
1098                                 do {
1099                                         mddev_dev_t devlist = conf_get_devs();
1100                                         acnt = 0;
1101                                         do {
1102                                                 rv2 = Assemble(ss, NULL, -1,
1103                                                                &ident,
1104                                                                devlist, NULL,
1105                                                                readonly, runstop, NULL, homehost, verbose-quiet, force);
1106                                                 if (rv2==0) {
1107                                                         cnt++;
1108                                                         acnt++;
1109                                                 }
1110                                                 if (rv2 == 1)
1111                                                         /* found something so even though assembly failed  we
1112                                                          * want to avoid auto-updates
1113                                                          */
1114                                                         auto_update_home = 0;
1115                                         } while (rv2!=2);
1116                                         /* Incase there are stacked devices, we need to go around again */
1117                                 } while (acnt);
1118                                 if (cnt == 0 && auto_update_home && homehost) {
1119                                         /* Nothing found, maybe we need to bootstrap homehost info */
1120                                         do {
1121                                                 acnt = 0;
1122                                                 do {
1123                                                         rv2 = Assemble(ss, NULL, -1,
1124                                                                        &ident,
1125                                                                        NULL, NULL,
1126                                                                        readonly, runstop, "homehost", homehost, verbose-quiet, force);
1127                                                         if (rv2==0) {
1128                                                                 cnt++;
1129                                                                 acnt++;
1130                                                         }
1131                                                 } while (rv2!=2);
1132                                                 /* Incase there are stacked devices, we need to go around again */
1133                                         } while (acnt);
1134                                 }
1135                                 if (cnt == 0 && rv == 0) {
1136                                         fprintf(stderr, Name ": No arrays found in config file or automatically\n");
1137                                         rv = 1;
1138                                 } else if (cnt)
1139                                         rv = 0;
1140                         } else if (cnt == 0 && rv == 0) {
1141                                 fprintf(stderr, Name ": No arrays found in config file\n");
1142                                 rv = 1;
1143                         }
1144                 }
1145                 break;
1146         case BUILD:
1147                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1148                 if (write_behind && !bitmap_file) {
1149                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1150                         rv = 1;
1151                         break;
1152                 }
1153                 if (raiddisks == 0) {
1154                         fprintf(stderr, Name ": no raid-devices specified.\n");
1155                         rv = 1;
1156                         break;
1157                 }
1158
1159                 if (bitmap_file) {
1160                         if (strcmp(bitmap_file, "internal")==0) {
1161                                 fprintf(stderr, Name ": 'internal' bitmaps not supported with --build\n");
1162                                 rv |= 1;
1163                                 break;
1164                         }
1165                 }
1166                 rv = Build(devlist->devname, mdfd, chunk, level, layout,
1167                            raiddisks, devlist->next, assume_clean,
1168                            bitmap_file, bitmap_chunk, write_behind, delay, verbose-quiet);
1169                 break;
1170         case CREATE:
1171                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1172                 if (write_behind && !bitmap_file) {
1173                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1174                         rv = 1;
1175                         break;
1176                 }
1177                 if (raiddisks == 0) {
1178                         fprintf(stderr, Name ": no raid-devices specified.\n");
1179                         rv = 1;
1180                         break;
1181                 }
1182
1183                 rv = Create(ss, devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
1184                             raiddisks, sparedisks, ident.name, homehost,
1185                             ident.uuid_set ? ident.uuid : NULL,
1186                             devs_found-1, devlist->next, runstop, verbose-quiet, force, assume_clean,
1187                             bitmap_file, bitmap_chunk, write_behind, delay);
1188                 break;
1189         case MISC:
1190                 if (devmode == 'E') {
1191                         if (devlist == NULL && !scan) {
1192                                 fprintf(stderr, Name ": No devices to examine\n");
1193                                 exit(2);
1194                         }
1195                         if (devlist == NULL)
1196                                 devlist = conf_get_devs();
1197                         if (devlist == NULL) {
1198                                 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1199                                 exit(1);
1200                         }
1201                         if (brief && verbose)
1202                                 brief = 2;
1203                         rv = Examine(devlist, scan?(verbose>1?0:verbose+1):brief,
1204                                      export, scan,
1205                                      SparcAdjust, ss, homehost);
1206                 } else {
1207                         if (devlist == NULL) {
1208                                 if (devmode=='D' && scan) {
1209                                         /* apply --detail to all devices in /proc/mdstat */
1210                                         struct mdstat_ent *ms = mdstat_read(0, 1);
1211                                         struct mdstat_ent *e;
1212                                         for (e=ms ; e ; e=e->next) {
1213                                                 char *name = get_md_name(e->devnum);
1214
1215                                                 if (!name) {
1216                                                         fprintf(stderr, Name ": cannot find device file for %s\n",
1217                                                                 e->dev);
1218                                                         continue;
1219                                                 }
1220                                                 rv |= Detail(name, verbose>1?0:verbose+1,
1221                                                              export, test, homehost);
1222                                                 put_md_name(name);
1223                                         }
1224                                 } else  if (devmode == 'S' && scan) {
1225                                         /* apply --stop to all devices in /proc/mdstat */
1226                                         /* Due to possible stacking of devices, repeat until
1227                                          * nothing more can be stopped
1228                                          */
1229                                         int progress=1, err;
1230                                         int last = 0;
1231                                         do {
1232                                                 struct mdstat_ent *ms = mdstat_read(0, 0);
1233                                                 struct mdstat_ent *e;
1234
1235                                                 if (!progress) last = 1;
1236                                                 progress = 0; err = 0;
1237                                                 for (e=ms ; e ; e=e->next) {
1238                                                         char *name = get_md_name(e->devnum);
1239
1240                                                         if (!name) {
1241                                                                 fprintf(stderr, Name ": cannot find device file for %s\n",
1242                                                                         e->dev);
1243                                                                 continue;
1244                                                         }
1245                                                         mdfd = open_mddev(name, 1);
1246                                                         if (mdfd >= 0) {
1247                                                                 if (Manage_runstop(name, mdfd, -1, quiet?1:last?0:-1))
1248                                                                         err = 1;
1249                                                                 else
1250                                                                         progress = 1;
1251                                                                 close(mdfd);
1252                                                         }
1253
1254                                                         put_md_name(name);
1255                                                 }
1256                                         } while (!last && err);
1257                                         if (err) rv |= 1;
1258                                 } else {
1259                                         fprintf(stderr, Name ": No devices given.\n");
1260                                         exit(2);
1261                                 }
1262                         }
1263                         for (dv=devlist ; dv; dv=dv->next) {
1264                                 switch(dv->disposition) {
1265                                 case 'D':
1266                                         rv |= Detail(dv->devname,
1267                                                      brief?1+verbose:0,
1268                                                      export, test, homehost);
1269                                         continue;
1270                                 case 'K': /* Zero superblock */
1271                                         rv |= Kill(dv->devname, force, quiet,0);
1272                                         continue;
1273                                 case 'Q':
1274                                         rv |= Query(dv->devname); continue;
1275                                 case 'X':
1276                                         rv |= ExamineBitmap(dv->devname, brief, ss); continue;
1277                                 case 'W':
1278                                         rv |= Wait(dv->devname); continue;
1279                                 case Waitclean:
1280                                         rv |= WaitClean(dv->devname, verbose-quiet); continue;
1281                                 }
1282                                 mdfd = open_mddev(dv->devname, 1);
1283                                 if (mdfd>=0) {
1284                                         switch(dv->disposition) {
1285                                         case 'R':
1286                                                 rv |= Manage_runstop(dv->devname, mdfd, 1, quiet); break;
1287                                         case 'S':
1288                                                 rv |= Manage_runstop(dv->devname, mdfd, -1, quiet); break;
1289                                         case 'o':
1290                                                 rv |= Manage_ro(dv->devname, mdfd, 1); break;
1291                                         case 'w':
1292                                                 rv |= Manage_ro(dv->devname, mdfd, -1); break;
1293                                         }
1294                                         close(mdfd);
1295                                 } else
1296                                         rv |= 1;
1297                         }
1298                 }
1299                 break;
1300         case MONITOR:
1301                 if (!devlist && !scan) {
1302                         fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
1303                         rv = 1;
1304                         break;
1305                 }
1306                 if (pidfile && !daemonise) {
1307                         fprintf(stderr, Name ": Cannot write a pid file when not in daemon mode\n");
1308                         rv = 1;
1309                         break;
1310                 }
1311                 rv= Monitor(devlist, mailaddr, program,
1312                             delay?delay:60, daemonise, scan, oneshot,
1313                             dosyslog, test, pidfile);
1314                 break;
1315
1316         case GROW:
1317                 if (devs_found > 1) {
1318
1319                         /* must be '-a'. */
1320                         if (size >= 0 || raiddisks) {
1321                                 fprintf(stderr, Name ": --size, --raiddisks, and --add are exclusing in --grow mode\n");
1322                                 rv = 1;
1323                                 break;
1324                         }
1325                         for (dv=devlist->next; dv ; dv=dv->next) {
1326                                 rv = Grow_Add_device(devlist->devname, mdfd, dv->devname);
1327                                 if (rv)
1328                                         break;
1329                         }
1330                 } else if ((size >= 0) + (raiddisks != 0) +  (layout != UnSet) + (bitmap_file != NULL)> 1) {
1331                         fprintf(stderr, Name ": can change at most one of size, raiddisks, bitmap, and layout\n");
1332                         rv = 1;
1333                         break;
1334                 } else if (layout != UnSet)
1335                         rv = Manage_reconfig(devlist->devname, mdfd, layout);
1336                 else if (size >= 0 || raiddisks)
1337                         rv = Grow_reshape(devlist->devname, mdfd, quiet, backup_file,
1338                                           size, level, layout, chunk, raiddisks);
1339                 else if (bitmap_file) {
1340                         if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1341                         rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file,
1342                                             bitmap_chunk, delay, write_behind, force);
1343                 } else
1344                         fprintf(stderr, Name ": no changes to --grow\n");
1345                 break;
1346         case INCREMENTAL:
1347                 if (rebuild_map) {
1348                         RebuildMap();
1349                 }
1350                 if (scan) {
1351                         if (runstop <= 0) {
1352                                 fprintf(stderr, Name
1353                          ": --incremental --scan meaningless without --run.\n");
1354                                 break;
1355                         }
1356                         rv = IncrementalScan(verbose);
1357                 }
1358                 if (!devlist) {
1359                         if (!rebuild_map && !scan) {
1360                                 fprintf(stderr, Name
1361                                         ": --incremental requires a device.\n");
1362                                 rv = 1;
1363                         }
1364                         break;
1365                 }
1366                 if (devlist->next) {
1367                         fprintf(stderr, Name
1368                                ": --incremental can only handle one device.\n");
1369                         rv = 1;
1370                         break;
1371                 }
1372                 rv = Incremental(devlist->devname, verbose-quiet, runstop,
1373                                  ss, homehost, autof);
1374                 break;
1375         case AUTODETECT:
1376                 autodetect();
1377                 break;
1378         }
1379         exit(rv);
1380 }