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 DetailPlatform:
 221                 case 'K': if (!mode) newmode = MISC; break;
 222                 }
 223                 if (mode && newmode == mode) {
 224                         /* everybody happy ! */
 225                 } else if (mode && newmode != mode) {
 226                         /* not allowed.. */
 227                         fprintf(stderr, Name ": ");
 228                         if (option_index >= 0)
 229                                 fprintf(stderr, "--%s", long_options[option_index].name);
 230                         else
 231                                 fprintf(stderr, "-%c", opt);
 232                         fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
 233                                 map_num(modes, newmode),
 234                                 map_num(modes, mode));
 235                         exit(2);
 236                 } else if (!mode && newmode) {
 237                         mode = newmode;
 238                 } else {
 239                         /* special case of -c --help */
 240                         if (opt == 'c' &&
 241                             ( strncmp(optarg, "--h", 3)==0 ||
 242                               strncmp(optarg, "-h", 2)==0)) {
 243                                 fputs(Help_config, stdout);
 244                                 exit(0);
 245                         }
 246
 247                         /* If first option is a device, don't force the mode yet */
 248                         if (opt == 1) {
 249                                 if (devs_found == 0) {
 250                                         dv = malloc(sizeof(*dv));
 251                                         if (dv == NULL) {
 252                                                 fprintf(stderr, Name ": malloc failed\n");
 253                                                 exit(3);
 254                                         }
 255                                         dv->devname = optarg;
 256                                         dv->disposition = devmode;
 257                                         dv->writemostly = writemostly;
 258                                         dv->re_add = re_add;
 259                                         dv->used = 0;
 260                                         dv->content = NULL;
 261                                         dv->next = NULL;
 262                                         *devlistend = dv;
 263                                         devlistend = &dv->next;
 264
 265                                         devs_found++;
 266                                         continue;
 267                                 }
 268                                 /* No mode yet, and this is the second device ... */
 269                                 fprintf(stderr, Name ": An option must be given to set the mode before a second device is listed\n");
 270                                 exit(2);
 271                         }
 272                         if (option_index >= 0)
 273                                 fprintf(stderr, Name ": --%s", long_options[option_index].name);
 274                         else
 275                                 fprintf(stderr, Name ": -%c", opt);
 276                         fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
 277                         exit(2);
 278                 }
 279
 280                 /* if we just set the mode, then done */
 281                 switch(opt) {
 282                 case '@':
 283                 case '#':
 284                 case 'A':
 285                 case 'B':
 286                 case 'C':
 287                 case 'F':
 288                 case 'G':
 289                 case 'I':
 290                 case AutoDetect:
 291                         continue;
 292                 }
 293                 if (opt == 1) {
 294                         /* an undecorated option - must be a device name.
 295                          */
 296                         if (devs_found > 0 && mode == '@' && !devmode) {
 297                                 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
 298                                 exit(2);
 299                         }
 300                         if (devs_found > 0 && mode == 'G' && !devmode) {
 301                                 fprintf(stderr, Name ": Must give one of -a for devices do add: %s\n", optarg);
 302                                 exit(2);
 303                         }
 304                         dv = malloc(sizeof(*dv));
 305                         if (dv == NULL) {
 306                                 fprintf(stderr, Name ": malloc failed\n");
 307                                 exit(3);
 308                         }
 309                         dv->devname = optarg;
 310                         dv->disposition = devmode;
 311                         dv->writemostly = writemostly;
 312                         dv->re_add = re_add;
 313                         dv->used = 0;
 314                         dv->content = NULL;
 315                         dv->next = NULL;
 316                         *devlistend = dv;
 317                         devlistend = &dv->next;
 318
 319                         devs_found++;
 320                         continue;
 321                 }
 322
 323                 /* We've got a mode, and opt is now something else which
 324                  * could depend on the mode */
 325 #define O(a,b) ((a<<8)|b)
 326                 switch (O(mode,opt)) {
 327                 case O(CREATE,'c'):
 328                 case O(BUILD,'c'): /* chunk or rounding */
 329                         if (chunk) {
 330                                 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
 331                                         "Second value is %s.\n", optarg);
 332                                 exit(2);
 333                         }
 334                         chunk = strtol(optarg, &c, 10);
 335                         if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
 336                                 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
 337                                         optarg);
 338                                 exit(2);
 339                         }
 340                         continue;
 341
 342                 case O(ASSEMBLE,AutoHomeHost):
 343                         auto_update_home = 1;
 344                         continue;
 345                 case O(INCREMENTAL, 'e'):
 346                 case O(CREATE,'e'):
 347                 case O(ASSEMBLE,'e'):
 348                 case O(MISC,'e'): /* set metadata (superblock) information */
 349                         if (ss) {
 350                                 fprintf(stderr, Name ": metadata information already given\n");
 351                                 exit(2);
 352                         }
 353                         for(i=0; !ss && superlist[i]; i++)
 354                                 ss = superlist[i]->match_metadata_desc(optarg);
 355
 356                         if (!ss) {
 357                                 fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
 358                                 exit(2);
 359                         }
 360                         max_disks = ss->max_devs;
 361                         continue;
 362
 363                 case O(MANAGE,'W'):
 364                 case O(BUILD,'W'):
 365                 case O(CREATE,'W'):
 366                         /* set write-mostly for following devices */
 367                         writemostly = 1;
 368                         continue;
 369
 370                 case O(MANAGE,'w'):
 371                         /* clear write-mostly for following devices */
 372                         writemostly = 2;
 373                         continue;
 374
 375
 376                 case O(GROW,'z'):
 377                 case O(CREATE,'z'): /* size */
 378                         if (size >= 0) {
 379                                 fprintf(stderr, Name ": size may only be specified once. "
 380                                         "Second value is %s.\n", optarg);
 381                                 exit(2);
 382                         }
 383                         if (strcmp(optarg, "max")==0)
 384                                 size = 0;
 385                         else {
 386                                 size = strtoll(optarg, &c, 10);
 387                                 if (!optarg[0] || *c || size < 4) {
 388                                         fprintf(stderr, Name ": invalid size: %s\n",
 389                                                 optarg);
 390                                         exit(2);
 391                                 }
 392                         }
 393                         continue;
 394
 395                 case O(GROW,'l'): /* hack - needed to understand layout */
 396                 case O(CREATE,'l'):
 397                 case O(BUILD,'l'): /* set raid level*/
 398                         if (level != UnSet) {
 399                                 fprintf(stderr, Name ": raid level may only be set once.  "
 400                                         "Second value is %s.\n", optarg);
 401                                 exit(2);
 402                         }
 403                         level = map_name(pers, optarg);
 404                         if (level == UnSet) {
 405                                 fprintf(stderr, Name ": invalid raid level: %s\n",
 406                                         optarg);
 407                                 exit(2);
 408                         }
 409                         if (level != 0 && level != -1 && level != 1 && level != -4 && level != -5 && mode == BUILD) {
 410                                 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
 411                                         optarg);
 412                                 exit(2);
 413                         }
 414                         if (sparedisks > 0 && level < 1 && level >= -1) {
 415                                 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
 416                                         optarg);
 417                                 exit(2);
 418                         }
 419                         ident.level = level;
 420                         continue;
 421
 422                 case O(CREATE,'p'): /* raid5 layout */
 423                 case O(BUILD,'p'): /* faulty layout */
 424                 case O(GROW, 'p'): /* faulty reconfig */
 425                         if (layout != UnSet) {
 426                                 fprintf(stderr,Name ": layout may only be sent once.  "
 427                                         "Second value was %s\n", optarg);
 428                                 exit(2);
 429                         }
 430                         switch(level) {
 431                         default:
 432                                 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
 433                                         map_num(pers, level));
 434                                 exit(2);
 435                         case UnSet:
 436                                 fprintf(stderr, Name ": raid level must be given before layout.\n");
 437                                 exit(2);
 438
 439                         case 5:
 440                                 layout = map_name(r5layout, optarg);
 441                                 if (layout==UnSet) {
 442                                         fprintf(stderr, Name ": layout %s not understood for raid5.\n",
 443                                                 optarg);
 444                                         exit(2);
 445                                 }
 446                                 break;
 447                         case 6:
 448                                 layout = map_name(r6layout, optarg);
 449                                 if (layout==UnSet) {
 450                                         fprintf(stderr, Name ": layout %s not understood for raid6.\n",
 451                                                 optarg);
 452                                         exit(2);
 453                                 }
 454                                 break;
 455
 456                         case 10:
 457                                 /* 'f', 'o' or 'n' followed by a number <= raid_disks */
 458                                 if ((optarg[0] !=  'n' && optarg[0] != 'f' && optarg[0] != 'o') ||
 459                                     (copies = strtoul(optarg+1, &cp, 10)) < 1 ||
 460                                     copies > 200 ||
 461                                     *cp) {
 462                                         fprintf(stderr, Name ": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
 463                                         exit(2);
 464                                 }
 465                                 if (optarg[0] == 'n')
 466                                         layout = 256 + copies;
 467                                 else if (optarg[0] == 'o')
 468                                         layout = 0x10000 + (copies<<8) + 1;
 469                                 else
 470                                         layout = 1 + (copies<<8);
 471                                 break;
 472                         case -5: /* Faulty
 473                                   * modeNNN
 474                                   */
 475
 476                         {
 477                                 int ln = strcspn(optarg, "0123456789");
 478                                 char *m = strdup(optarg);
 479                                 int mode;
 480                                 m[ln] = 0;
 481                                 mode = map_name(faultylayout, m);
 482                                 if (mode == UnSet) {
 483                                         fprintf(stderr, Name ": layout %s not understood for faulty.\n",
 484                                                 optarg);
 485                                         exit(2);
 486                                 }
 487                                 layout = mode | (atoi(optarg+ln)<< ModeShift);
 488                         }
 489                         }
 490                         continue;
 491
 492                 case O(CREATE,AssumeClean):
 493                 case O(BUILD,AssumeClean): /* assume clean */
 494                         assume_clean = 1;
 495                         continue;
 496
 497                 case O(GROW,'n'):
 498                 case O(CREATE,'n'):
 499                 case O(BUILD,'n'): /* number of raid disks */
 500                         if (raiddisks) {
 501                                 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
 502                                         raiddisks, optarg);
 503                                 exit(2);
 504                         }
 505                         raiddisks = strtol(optarg, &c, 10);
 506                         if (!optarg[0] || *c || raiddisks<=0) {
 507                                 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
 508                                         optarg);
 509                                 exit(2);
 510                         }
 511                         ident.raid_disks = raiddisks;
 512                         continue;
 513
 514                 case O(CREATE,'x'): /* number of spare (eXtra) discs */
 515                         if (sparedisks) {
 516                                 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
 517                                         sparedisks, optarg);
 518                                 exit(2);
 519                         }
 520                         if (level != UnSet && level <= 0 && level >= -1) {
 521                                 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
 522                                         level);
 523                                 exit(2);
 524                         }
 525                         sparedisks = strtol(optarg, &c, 10);
 526                         if (!optarg[0] || *c || sparedisks < 0) {
 527                                 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
 528                                         optarg);
 529                                 exit(2);
 530                         }
 531                         continue;
 532
 533                 case O(CREATE,'a'):
 534                 case O(BUILD,'a'):
 535                 case O(INCREMENTAL,'a'):
 536                 case O(ASSEMBLE,'a'): /* auto-creation of device node */
 537                         autof = parse_auto(optarg, "--auto flag", 0);
 538                         continue;
 539
 540                 case O(CREATE,Symlinks):
 541                 case O(BUILD,Symlinks):
 542                 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
 543                         symlinks = optarg;
 544                         continue;
 545
 546                 case O(BUILD,'f'): /* force honouring '-n 1' */
 547                 case O(GROW,'f'): /* ditto */
 548                 case O(CREATE,'f'): /* force honouring of device list */
 549                 case O(ASSEMBLE,'f'): /* force assembly */
 550                 case O(MISC,'f'): /* force zero */
 551                         force=1;
 552                         continue;
 553
 554                         /* now for the Assemble options */
 555                 case O(CREATE,'u'): /* uuid of array */
 556                 case O(ASSEMBLE,'u'): /* uuid of array */
 557                         if (ident.uuid_set) {
 558                                 fprintf(stderr, Name ": uuid cannot be set twice.  "
 559                                         "Second value %s.\n", optarg);
 560                                 exit(2);
 561                         }
 562                         if (parse_uuid(optarg, ident.uuid))
 563                                 ident.uuid_set = 1;
 564                         else {
 565                                 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
 566                                 exit(2);
 567                         }
 568                         continue;
 569
 570                 case O(CREATE,'N'):
 571                 case O(ASSEMBLE,'N'):
 572                         if (ident.name[0]) {
 573                                 fprintf(stderr, Name ": name cannot be set twice.   "
 574                                         "Second value %s.\n", optarg);
 575                                 exit(2);
 576                         }
 577                         if (strlen(optarg) > 32) {
 578                                 fprintf(stderr, Name ": name '%s' is too long, 32 chars max.\n",
 579                                         optarg);
 580                                 exit(2);
 581                         }
 582                         strcpy(ident.name, optarg);
 583                         continue;
 584
 585                 case O(ASSEMBLE,'m'): /* super-minor for array */
 586                         if (ident.super_minor != UnSet) {
 587                                 fprintf(stderr, Name ": super-minor cannot be set twice.  "
 588                                         "Second value: %s.\n", optarg);
 589                                 exit(2);
 590                         }
 591                         if (strcmp(optarg, "dev")==0)
 592                                 ident.super_minor = -2;
 593                         else {
 594                                 ident.super_minor = strtoul(optarg, &cp, 10);
 595                                 if (!optarg[0] || *cp) {
 596                                         fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
 597                                         exit(2);
 598                                 }
 599                         }
 600                         continue;
 601
 602                 case O(ASSEMBLE,'U'): /* update the superblock */
 603                         if (update) {
 604                                 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
 605                                         update, optarg);
 606                                 exit(2);
 607                         }
 608                         update = optarg;
 609                         if (strcmp(update, "sparc2.2")==0)
 610                                 continue;
 611                         if (strcmp(update, "super-minor") == 0)
 612                                 continue;
 613                         if (strcmp(update, "summaries")==0)
 614                                 continue;
 615                         if (strcmp(update, "resync")==0)
 616                                 continue;
 617                         if (strcmp(update, "uuid")==0)
 618                                 continue;
 619                         if (strcmp(update, "name")==0)
 620                                 continue;
 621                         if (strcmp(update, "homehost")==0)
 622                                 continue;
 623                         if (strcmp(update, "devicesize")==0)
 624                                 continue;
 625                         if (strcmp(update, "byteorder")==0) {
 626                                 if (ss) {
 627                                         fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");
 628                                         exit(2);
 629                                 }
 630                                 for(i=0; !ss && superlist[i]; i++)
 631                                         ss = superlist[i]->match_metadata_desc("0.swap");
 632                                 if (!ss) {
 633                                         fprintf(stderr, Name ": INTERNAL ERROR cannot find 0.swap\n");
 634                                         exit(2);
 635                                 }
 636
 637                                 continue;
 638                         }
 639                         if (strcmp(update,"?") == 0 ||
 640                             strcmp(update, "help") == 0) {
 641                                 outf = stdout;
 642                                 fprintf(outf, Name ": ");
 643                         } else {
 644                                 outf = stderr;
 645                                 fprintf(outf,
 646                                         Name ": '--update=%s' is invalid.  ",
 647                                         update);
 648                         }
 649                         fprintf(outf, "Valid --update options are:\n"
 650                 "     'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
 651                 "     'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
 652                         exit(outf == stdout ? 0 : 2);
 653
 654                 case O(INCREMENTAL,NoDegraded):
 655                 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
 656                         runstop = -1; /* --stop isn't allowed for --assemble,
 657                                        * so we overload slightly */
 658                         continue;
 659
 660                 case O(ASSEMBLE,'c'): /* config file */
 661                 case O(INCREMENTAL, 'c'):
 662                 case O(MISC, 'c'):
 663                 case O(MONITOR,'c'):
 664                         if (configfile) {
 665                                 fprintf(stderr, Name ": configfile cannot be set twice.  "
 666                                         "Second value is %s.\n", optarg);
 667                                 exit(2);
 668                         }
 669                         configfile = optarg;
 670                         set_conffile(configfile);
 671                         /* FIXME possibly check that config file exists.  Even parse it */
 672                         continue;
 673                 case O(ASSEMBLE,'s'): /* scan */
 674                 case O(MISC,'s'):
 675                 case O(MONITOR,'s'):
 676                 case O(INCREMENTAL,'s'):
 677                         scan = 1;
 678                         continue;
 679
 680                 case O(MONITOR,'m'): /* mail address */
 681                         if (mailaddr)
 682                                 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
 683                                         optarg);
 684                         else
 685                                 mailaddr = optarg;
 686                         continue;
 687
 688                 case O(MONITOR,'p'): /* alert program */
 689                         if (program)
 690                                 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
 691                                         optarg);
 692                         else
 693                                 program = optarg;
 694                         continue;
 695
 696                 case O(MONITOR,'d'): /* delay in seconds */
 697                 case O(GROW, 'd'):
 698                 case O(BUILD,'d'): /* delay for bitmap updates */
 699                 case O(CREATE,'d'):
 700                         if (delay)
 701                                 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
 702                                         optarg);
 703                         else {
 704                                 delay = strtol(optarg, &c, 10);
 705                                 if (!optarg[0] || *c || delay<1) {
 706                                         fprintf(stderr, Name ": invalid delay: %s\n",
 707                                                 optarg);
 708                                         exit(2);
 709                                 }
 710                         }
 711                         continue;
 712                 case O(MONITOR,'f'): /* daemonise */
 713                         daemonise = 1;
 714                         continue;
 715                 case O(MONITOR,'i'): /* pid */
 716                         if (pidfile)
 717                                 fprintf(stderr, Name ": only specify one pid file. %s ignored.\n",
 718                                         optarg);
 719                         else
 720                                 pidfile = optarg;
 721                         continue;
 722                 case O(MONITOR,'1'): /* oneshot */
 723                         oneshot = 1;
 724                         continue;
 725                 case O(MONITOR,'t'): /* test */
 726                         test = 1;
 727                         continue;
 728                 case O(MONITOR,'y'): /* log messages to syslog */
 729                         openlog("mdadm", LOG_PID, SYSLOG_FACILITY);
 730                         dosyslog = 1;
 731                         continue;
 732
 733                         /* now the general management options.  Some are applicable
 734                          * to other modes. None have arguments.
 735                          */
 736                 case O(GROW,'a'):
 737                 case O(MANAGE,'a'): /* add a drive */
 738                         devmode = 'a';
 739                         re_add = 0;
 740                         continue;
 741                 case O(MANAGE,ReAdd):
 742                         devmode = 'a';
 743                         re_add = 1;
 744                         continue;
 745                 case O(MANAGE,'r'): /* remove a drive */
 746                         devmode = 'r';
 747                         continue;
 748                 case O(MANAGE,'f'): /* set faulty */
 749                         devmode = 'f';
 750                         continue;
 751                 case O(INCREMENTAL,'R'):
 752                 case O(MANAGE,'R'):
 753                 case O(ASSEMBLE,'R'):
 754                 case O(BUILD,'R'):
 755                 case O(CREATE,'R'): /* Run the array */
 756                         if (runstop < 0) {
 757                                 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
 758                                 exit(2);
 759                         }
 760                         runstop = 1;
 761                         continue;
 762                 case O(MANAGE,'S'):
 763                         if (runstop > 0) {
 764                                 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
 765                                 exit(2);
 766                         }
 767                         runstop = -1;
 768                         continue;
 769
 770                 case O(MISC,'Q'):
 771                 case O(MISC,'D'):
 772                 case O(MISC,'E'):
 773                 case O(MISC,'K'):
 774                 case O(MISC,'R'):
 775                 case O(MISC,'S'):
 776                 case O(MISC,'X'):
 777                 case O(MISC,'o'):
 778                 case O(MISC,'w'):
 779                 case O(MISC,'W'):
 780                 case O(MISC, Waitclean):
 781                 case O(MISC, DetailPlatform):
 782                         if (devmode && devmode != opt &&
 783                             (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
 784                                 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
 785                                         devmode =='E'?opt:devmode);
 786                                 exit(2);
 787                         }
 788                         devmode = opt;
 789                         continue;
 790                 case O(MISC,'t'):
 791                         test = 1;
 792                         continue;
 793
 794                 case O(MISC, Sparc22):
 795                         if (devmode != 'E') {
 796                                 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
 797                                 exit(2);
 798                         }
 799                         SparcAdjust = 1;
 800                         continue;
 801
 802                 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
 803                         if (!optarg) {
 804                                 fprintf(stderr, Name ": bitmap file needed with -b in --assemble mode\n");
 805                                 exit(2);
 806                         }
 807                         if (strcmp(optarg, "internal")==0) {
 808                                 fprintf(stderr, Name ": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
 809                                 continue;
 810                         }
 811                         bitmap_fd = open(optarg, O_RDWR);
 812                         if (!*optarg || bitmap_fd < 0) {
 813                                 fprintf(stderr, Name ": cannot open bitmap file %s: %s\n", optarg, strerror(errno));
 814                                 exit(2);
 815                         }
 816                         ident.bitmap_fd = bitmap_fd; /* for Assemble */
 817                         continue;
 818
 819                 case O(ASSEMBLE, BackupFile):
 820                 case O(GROW, BackupFile):
 821                         /* Specify a file into which grow might place a backup,
 822                          * or from which assemble might recover a backup
 823                          */
 824                         if (backup_file) {
 825                                 fprintf(stderr, Name ": backup file already specified, rejecting %s\n", optarg);
 826                                 exit(2);
 827                         }
 828                         backup_file = optarg;
 829                         continue;
 830
 831                 case O(BUILD,'b'):
 832                 case O(CREATE,'b'): /* here we create the bitmap */
 833                         if (strcmp(optarg, "none") == 0) {
 834                                 fprintf(stderr, Name ": '--bitmap none' only"
 835                                         " support for --grow\n");
 836                                 exit(2);
 837                         }
 838                         /* FALL THROUGH */
 839                 case O(GROW,'b'):
 840                         if (strcmp(optarg, "internal")== 0 ||
 841                             strcmp(optarg, "none")== 0 ||
 842                             strchr(optarg, '/') != NULL) {
 843                                 bitmap_file = optarg;
 844                                 continue;
 845                         }
 846                         /* probable typo */
 847                         fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n");
 848                         exit(2);
 849
 850                 case O(GROW,BitmapChunk):
 851                 case O(BUILD,BitmapChunk):
 852                 case O(CREATE,BitmapChunk): /* bitmap chunksize */
 853                         bitmap_chunk = strtol(optarg, &c, 10);
 854                         if (!optarg[0] || *c || bitmap_chunk < 0 ||
 855                                         bitmap_chunk & (bitmap_chunk - 1)) {
 856                                 fprintf(stderr, Name ": invalid bitmap chunksize: %s\n",
 857                                                 optarg);
 858                                 exit(2);
 859                         }
 860                         /* convert K to B, chunk of 0K means 512B */
 861                         bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
 862                         continue;
 863
 864                 case O(GROW, WriteBehind):
 865                 case O(BUILD, WriteBehind):
 866                 case O(CREATE, WriteBehind): /* write-behind mode */
 867                         write_behind = DEFAULT_MAX_WRITE_BEHIND;
 868                         if (optarg) {
 869                                 write_behind = strtol(optarg, &c, 10);
 870                                 if (write_behind < 0 || *c ||
 871                                     write_behind > 16383) {
 872                                         fprintf(stderr, Name ": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg);
 873                                         exit(2);
 874                                 }
 875                         }
 876                         continue;
 877
 878                 case O(INCREMENTAL, 'r'):
 879                         rebuild_map = 1;
 880                         continue;
 881                 }
 882                 /* We have now processed all the valid options. Anything else is
 883                  * an error
 884                  */
 885                 if (option_index > 0)
 886                         fprintf(stderr, Name ":option --%s not valid in %s mode\n",
 887                                 long_options[option_index].name,
 888                                 map_num(modes, mode));
 889                 else
 890                         fprintf(stderr, Name ": option -%c not valid in %s mode\n",
 891                                 opt, map_num(modes, mode));
 892                 exit(2);
 893
 894         }
 895
 896         if (print_help) {
 897                 char *help_text = Help;
 898                 if (print_help == 2)
 899                         help_text = OptionHelp;
 900                 else
 901                         switch (mode) {
 902                         case ASSEMBLE : help_text = Help_assemble; break;
 903                         case BUILD    : help_text = Help_build; break;
 904                         case CREATE   : help_text = Help_create; break;
 905                         case MANAGE   : help_text = Help_manage; break;
 906                         case MISC     : help_text = Help_misc; break;
 907                         case MONITOR  : help_text = Help_monitor; break;
 908                         case GROW     : help_text = Help_grow; break;
 909                         case INCREMENTAL:help_text= Help_incr; break;
 910                         }
 911                 fputs(help_text,stdout);
 912                 exit(0);
 913         }
 914
 915         if (!mode && devs_found) {
 916                 mode = MISC;
 917                 devmode = 'Q';
 918                 if (devlist->disposition == 0)
 919                         devlist->disposition = devmode;
 920         }
 921         if (!mode) {
 922                 fputs(Usage, stderr);
 923                 exit(2);
 924         }
 925
 926         if (symlinks) {
 927                 struct createinfo *ci = conf_get_create_info();
 928
 929                 if (strcasecmp(symlinks, "yes") == 0)
 930                         ci->symlinks = 1;
 931                 else if (strcasecmp(symlinks, "no") == 0)
 932                         ci->symlinks = 0;
 933                 else {
 934                         fprintf(stderr, Name ": option --symlinks must be 'no' or 'yes'\n");
 935                         exit(2);
 936                 }
 937         }
 938         /* Ok, got the option parsing out of the way
 939          * hopefully it's mostly right but there might be some stuff
 940          * missing
 941          *
 942          * That is mosty checked in the per-mode stuff but...
 943          *
 944          * For @,B,C  and A without -s, the first device listed must be an md device
 945          * we check that here and open it.
 946          */
 947
 948         if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
 949             (mode == ASSEMBLE && ! scan)) {
 950                 if (devs_found < 1) {
 951                         fprintf(stderr, Name ": an md device must be given in this mode\n");
 952                         exit(2);
 953                 }
 954                 if ((int)ident.super_minor == -2 && autof) {
 955                         fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
 956                         exit(2);
 957                 }
 958                 if (mode == MANAGE || mode == GROW) {
 959                         mdfd = open_mddev(devlist->devname, 1);
 960                         if (mdfd < 0)
 961                                 exit(1);
 962                 } else
 963                         /* non-existent device is OK */
 964                         mdfd = open_mddev(devlist->devname, 0);
 965                 if (mdfd == -2) {
 966                         fprintf(stderr, Name ": device %s exists but is not an "
 967                                 "md array.\n", devlist->devname);
 968                         exit(1);
 969                 }
 970                 if ((int)ident.super_minor == -2) {
 971                         struct stat stb;
 972                         if (mdfd < 0) {
 973                                 fprintf(stderr, Name ": --super-minor=dev given, and "
 974                                         "listed device %s doesn't exist.\n",
 975                                         devlist->devname);
 976                                 exit(1);
 977                         }
 978                         fstat(mdfd, &stb);
 979                         ident.super_minor = minor(stb.st_rdev);
 980                 }
 981                 if (mdfd >= 0 && mode != MANAGE && mode != GROW) {
 982                         /* We don't really want this open yet, we just might
 983                          * have wanted to check some things
 984                          */
 985                         close(mdfd);
 986                         mdfd = -1;
 987                 }
 988         }
 989
 990         if (raiddisks) {
 991                 if (raiddisks > max_disks) {
 992                         fprintf(stderr, Name ": invalid number of raid devices: %d\n",
 993                                 raiddisks);
 994                         exit(2);
 995                 }
 996                 if (raiddisks == 1 &&  !force && level != -5) {
 997                         fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
 998                                 "     a mistake.  If you really mean it you will need to specify --force before\n"
 999                                 "     setting the number of drives.\n");
1000                         exit(2);
1001                 }
1002         }
1003         if (sparedisks) {
1004                 if ( sparedisks > max_disks - raiddisks) {
1005                         fprintf(stderr, Name ": invalid number of spare-devices: %d\n",
1006                                 sparedisks);
1007                         exit(2);
1008                 }
1009         }
1010
1011         if (homehost == NULL)
1012                 homehost = conf_get_homehost();
1013         if (homehost == NULL || strcmp(homehost, "<system>")==0) {
1014                 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
1015                         sys_hostname[sizeof(sys_hostname)-1] = 0;
1016                         homehost = sys_hostname;
1017                 }
1018         }
1019
1020         ident.autof = autof;
1021
1022         rv = 0;
1023         switch(mode) {
1024         case MANAGE:
1025                 /* readonly, add/remove, readwrite, runstop */
1026                 if (readonly>0)
1027                         rv = Manage_ro(devlist->devname, mdfd, readonly);
1028                 if (!rv && devs_found>1)
1029                         rv = Manage_subdevs(devlist->devname, mdfd,
1030                                             devlist->next, verbose-quiet);
1031                 if (!rv && readonly < 0)
1032                         rv = Manage_ro(devlist->devname, mdfd, readonly);
1033                 if (!rv && runstop)
1034                         rv = Manage_runstop(devlist->devname, mdfd, runstop, quiet);
1035                 break;
1036         case ASSEMBLE:
1037                 if (devs_found == 1 && ident.uuid_set == 0 &&
1038                     ident.super_minor == UnSet && ident.name[0] == 0 && !scan ) {
1039                         /* Only a device has been given, so get details from config file */
1040                         mddev_ident_t array_ident = conf_get_ident(devlist->devname);
1041                         if (array_ident == NULL) {
1042                                 fprintf(stderr, Name ": %s not identified in config file.\n",
1043                                         devlist->devname);
1044                                 rv |= 1;
1045                                 if (mdfd >= 0)
1046                                         close(mdfd);
1047                         } else {
1048                                 if (array_ident->autof == 0)
1049                                         array_ident->autof = autof;
1050                                 rv |= Assemble(ss, devlist->devname, array_ident,
1051                                                NULL, backup_file,
1052                                                readonly, runstop, update, homehost, verbose-quiet, force);
1053                         }
1054                 } else if (!scan)
1055                         rv = Assemble(ss, devlist->devname, &ident,
1056                                       devlist->next, backup_file,
1057                                       readonly, runstop, update, homehost, verbose-quiet, force);
1058                 else if (devs_found>0) {
1059                         if (update && devs_found > 1) {
1060                                 fprintf(stderr, Name ": can only update a single array at a time\n");
1061                                 exit(1);
1062                         }
1063                         if (backup_file && devs_found > 1) {
1064                                 fprintf(stderr, Name ": can only assemble a single array when providing a backup file.\n");
1065                                 exit(1);
1066                         }
1067                         for (dv = devlist ; dv ; dv=dv->next) {
1068                                 mddev_ident_t array_ident = conf_get_ident(dv->devname);
1069                                 if (array_ident == NULL) {
1070                                         fprintf(stderr, Name ": %s not identified in config file.\n",
1071                                                 dv->devname);
1072                                         rv |= 1;
1073                                         continue;
1074                                 }
1075                                 if (array_ident->autof == 0)
1076                                         array_ident->autof = autof;
1077                                 rv |= Assemble(ss, dv->devname, array_ident,
1078                                                NULL, backup_file,
1079                                                readonly, runstop, update, homehost, verbose-quiet, force);
1080                         }
1081                 } else {
1082                         mddev_ident_t array_list =  conf_get_ident(NULL);
1083                         mddev_dev_t devlist = conf_get_devs();
1084                         int cnt = 0;
1085                         if (devlist == NULL) {
1086                                 fprintf(stderr, Name ": No devices listed in conf file were found.\n");
1087                                 exit(1);
1088                         }
1089                         if (update) {
1090                                 fprintf(stderr, Name ": --update not meaningful with a --scan assembly.\n");
1091                                 exit(1);
1092                         }
1093                         if (backup_file) {
1094                                 fprintf(stderr, Name ": --backup_file not meaningful with a --scan assembly.\n");
1095                                 exit(1);
1096                         }
1097                         for (; array_list; array_list = array_list->next) {
1098                                 if (array_list->autof == 0)
1099                                         array_list->autof = autof;
1100
1101                                 rv |= Assemble(ss, array_list->devname,
1102                                                array_list,
1103                                                NULL, NULL,
1104                                                readonly, runstop, NULL, homehost, verbose-quiet, force);
1105                                 cnt++;
1106                         }
1107                         if (homehost && cnt == 0) {
1108                                 /* Maybe we can auto-assemble something.
1109                                  * Repeatedly call Assemble in auto-assemble mode
1110                                  * until it fails
1111                                  */
1112                                 int rv2;
1113                                 int acnt;
1114                                 ident.autof = autof;
1115                                 do {
1116                                         mddev_dev_t devlist = conf_get_devs();
1117                                         acnt = 0;
1118                                         do {
1119                                                 rv2 = Assemble(ss, NULL,
1120                                                                &ident,
1121                                                                devlist, NULL,
1122                                                                readonly, runstop, NULL, homehost, verbose-quiet, force);
1123                                                 if (rv2==0) {
1124                                                         cnt++;
1125                                                         acnt++;
1126                                                 }
1127                                                 if (rv2 == 1)
1128                                                         /* found something so even though assembly failed  we
1129                                                          * want to avoid auto-updates
1130                                                          */
1131                                                         auto_update_home = 0;
1132                                         } while (rv2!=2);
1133                                         /* Incase there are stacked devices, we need to go around again */
1134                                 } while (acnt);
1135                                 if (cnt == 0 && auto_update_home && homehost) {
1136                                         /* Nothing found, maybe we need to bootstrap homehost info */
1137                                         do {
1138                                                 acnt = 0;
1139                                                 do {
1140                                                         rv2 = Assemble(ss, NULL,
1141                                                                        &ident,
1142                                                                        NULL, NULL,
1143                                                                        readonly, runstop, "homehost", homehost, verbose-quiet, force);
1144                                                         if (rv2==0) {
1145                                                                 cnt++;
1146                                                                 acnt++;
1147                                                         }
1148                                                 } while (rv2!=2);
1149                                                 /* Incase there are stacked devices, we need to go around again */
1150                                         } while (acnt);
1151                                 }
1152                                 if (cnt == 0 && rv == 0) {
1153                                         fprintf(stderr, Name ": No arrays found in config file or automatically\n");
1154                                         rv = 1;
1155                                 } else if (cnt)
1156                                         rv = 0;
1157                         } else if (cnt == 0 && rv == 0) {
1158                                 fprintf(stderr, Name ": No arrays found in config file\n");
1159                                 rv = 1;
1160                         }
1161                 }
1162                 break;
1163         case BUILD:
1164                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1165                 if (write_behind && !bitmap_file) {
1166                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1167                         rv = 1;
1168                         break;
1169                 }
1170                 if (raiddisks == 0) {
1171                         fprintf(stderr, Name ": no raid-devices specified.\n");
1172                         rv = 1;
1173                         break;
1174                 }
1175
1176                 if (bitmap_file) {
1177                         if (strcmp(bitmap_file, "internal")==0) {
1178                                 fprintf(stderr, Name ": 'internal' bitmaps not supported with --build\n");
1179                                 rv |= 1;
1180                                 break;
1181                         }
1182                 }
1183                 rv = Build(devlist->devname, chunk, level, layout,
1184                            raiddisks, devlist->next, assume_clean,
1185                            bitmap_file, bitmap_chunk, write_behind,
1186                            delay, verbose-quiet, autof);
1187                 break;
1188         case CREATE:
1189                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1190                 if (write_behind && !bitmap_file) {
1191                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1192                         rv = 1;
1193                         break;
1194                 }
1195                 if (raiddisks == 0) {
1196                         fprintf(stderr, Name ": no raid-devices specified.\n");
1197                         rv = 1;
1198                         break;
1199                 }
1200
1201                 rv = Create(ss, devlist->devname, chunk, level, layout, size<0 ? 0 : size,
1202                             raiddisks, sparedisks, ident.name, homehost,
1203                             ident.uuid_set ? ident.uuid : NULL,
1204                             devs_found-1, devlist->next, runstop, verbose-quiet, force, assume_clean,
1205                             bitmap_file, bitmap_chunk, write_behind, delay, autof);
1206                 break;
1207         case MISC:
1208                 if (devmode == 'E') {
1209                         if (devlist == NULL && !scan) {
1210                                 fprintf(stderr, Name ": No devices to examine\n");
1211                                 exit(2);
1212                         }
1213                         if (devlist == NULL)
1214                                 devlist = conf_get_devs();
1215                         if (devlist == NULL) {
1216                                 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1217                                 exit(1);
1218                         }
1219                         if (brief && verbose)
1220                                 brief = 2;
1221                         rv = Examine(devlist, scan?(verbose>1?0:verbose+1):brief,
1222                                      export, scan,
1223                                      SparcAdjust, ss, homehost);
1224                 } else if (devmode == DetailPlatform) {
1225                         rv = Detail_Platform(ss ? ss->ss : NULL, ss ? scan : 1, verbose);
1226                 } else {
1227                         if (devlist == NULL) {
1228                                 if ((devmode=='D' || devmode == Waitclean) && scan) {
1229                                         /* apply --detail or --wait-clean to
1230                                          * all devices in /proc/mdstat
1231                                          */
1232                                         struct mdstat_ent *ms = mdstat_read(0, 1);
1233                                         struct mdstat_ent *e;
1234                                         int v = verbose>1?0:verbose+1;
1235
1236                                         for (e=ms ; e ; e=e->next) {
1237                                                 char *name = get_md_name(e->devnum);
1238
1239                                                 if (!name) {
1240                                                         fprintf(stderr, Name ": cannot find device file for %s\n",
1241                                                                 e->dev);
1242                                                         continue;
1243                                                 }
1244                                                 if (devmode == 'D')
1245                                                         rv |= Detail(name, v,
1246                                                                      export, test,
1247                                                                      homehost);
1248                                                 else
1249                                                         rv |= WaitClean(name, v);
1250                                                 put_md_name(name);
1251                                         }
1252                                         free_mdstat(ms);
1253                                 } else  if (devmode == 'S' && scan) {
1254                                         /* apply --stop to all devices in /proc/mdstat */
1255                                         /* Due to possible stacking of devices, repeat until
1256                                          * nothing more can be stopped
1257                                          */
1258                                         int progress=1, err;
1259                                         int last = 0;
1260                                         do {
1261                                                 struct mdstat_ent *ms = mdstat_read(0, 0);
1262                                                 struct mdstat_ent *e;
1263
1264                                                 if (!progress) last = 1;
1265                                                 progress = 0; err = 0;
1266                                                 for (e=ms ; e ; e=e->next) {
1267                                                         char *name = get_md_name(e->devnum);
1268
1269                                                         if (!name) {
1270                                                                 fprintf(stderr, Name ": cannot find device file for %s\n",
1271                                                                         e->dev);
1272                                                                 continue;
1273                                                         }
1274                                                         mdfd = open_mddev(name, 1);
1275                                                         if (mdfd >= 0) {
1276                                                                 if (Manage_runstop(name, mdfd, -1, quiet?1:last?0:-1))
1277                                                                         err = 1;
1278                                                                 else
1279                                                                         progress = 1;
1280                                                                 close(mdfd);
1281                                                         }
1282
1283                                                         put_md_name(name);
1284                                                 }
1285                                                 free_mdstat(ms);
1286                                         } while (!last && err);
1287                                         if (err) rv |= 1;
1288                                 } else {
1289                                         fprintf(stderr, Name ": No devices given.\n");
1290                                         exit(2);
1291                                 }
1292                         }
1293                         for (dv=devlist ; dv; dv=dv->next) {
1294                                 switch(dv->disposition) {
1295                                 case 'D':
1296                                         rv |= Detail(dv->devname,
1297                                                      brief?1+verbose:0,
1298                                                      export, test, homehost);
1299                                         continue;
1300                                 case 'K': /* Zero superblock */
1301                                         rv |= Kill(dv->devname, force, quiet,0);
1302                                         continue;
1303                                 case 'Q':
1304                                         rv |= Query(dv->devname); continue;
1305                                 case 'X':
1306                                         rv |= ExamineBitmap(dv->devname, brief, ss); continue;
1307                                 case 'W':
1308                                         rv |= Wait(dv->devname); continue;
1309                                 case Waitclean:
1310                                         rv |= WaitClean(dv->devname, verbose-quiet); continue;
1311                                 }
1312                                 mdfd = open_mddev(dv->devname, 1);
1313                                 if (mdfd>=0) {
1314                                         switch(dv->disposition) {
1315                                         case 'R':
1316                                                 rv |= Manage_runstop(dv->devname, mdfd, 1, quiet); break;
1317                                         case 'S':
1318                                                 rv |= Manage_runstop(dv->devname, mdfd, -1, quiet); break;
1319                                         case 'o':
1320                                                 rv |= Manage_ro(dv->devname, mdfd, 1); break;
1321                                         case 'w':
1322                                                 rv |= Manage_ro(dv->devname, mdfd, -1); break;
1323                                         }
1324                                         close(mdfd);
1325                                 } else
1326                                         rv |= 1;
1327                         }
1328                 }
1329                 break;
1330         case MONITOR:
1331                 if (!devlist && !scan) {
1332                         fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
1333                         rv = 1;
1334                         break;
1335                 }
1336                 if (pidfile && !daemonise) {
1337                         fprintf(stderr, Name ": Cannot write a pid file when not in daemon mode\n");
1338                         rv = 1;
1339                         break;
1340                 }
1341                 rv= Monitor(devlist, mailaddr, program,
1342                             delay?delay:60, daemonise, scan, oneshot,
1343                             dosyslog, test, pidfile);
1344                 break;
1345
1346         case GROW:
1347                 if (devs_found > 1) {
1348
1349                         /* must be '-a'. */
1350                         if (size >= 0 || raiddisks) {
1351                                 fprintf(stderr, Name ": --size, --raiddisks, and --add are exclusing in --grow mode\n");
1352                                 rv = 1;
1353                                 break;
1354                         }
1355                         for (dv=devlist->next; dv ; dv=dv->next) {
1356                                 rv = Grow_Add_device(devlist->devname, mdfd, dv->devname);
1357                                 if (rv)
1358                                         break;
1359                         }
1360                 } else if ((size >= 0) + (raiddisks != 0) +  (layout != UnSet) + (bitmap_file != NULL)> 1) {
1361                         fprintf(stderr, Name ": can change at most one of size, raiddisks, bitmap, and layout\n");
1362                         rv = 1;
1363                         break;
1364                 } else if (layout != UnSet)
1365                         rv = Manage_reconfig(devlist->devname, mdfd, layout);
1366                 else if (size >= 0 || raiddisks)
1367                         rv = Grow_reshape(devlist->devname, mdfd, quiet, backup_file,
1368                                           size, level, layout, chunk, raiddisks);
1369                 else if (bitmap_file) {
1370                         if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1371                         rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file,
1372                                             bitmap_chunk, delay, write_behind, force);
1373                 } else
1374                         fprintf(stderr, Name ": no changes to --grow\n");
1375                 break;
1376         case INCREMENTAL:
1377                 if (rebuild_map) {
1378                         RebuildMap();
1379                 }
1380                 if (scan) {
1381                         if (runstop <= 0) {
1382                                 fprintf(stderr, Name
1383                          ": --incremental --scan meaningless without --run.\n");
1384                                 break;
1385                         }
1386                         rv = IncrementalScan(verbose);
1387                 }
1388                 if (!devlist) {
1389                         if (!rebuild_map && !scan) {
1390                                 fprintf(stderr, Name
1391                                         ": --incremental requires a device.\n");
1392                                 rv = 1;
1393                         }
1394                         break;
1395                 }
1396                 if (devlist->next) {
1397                         fprintf(stderr, Name
1398                                ": --incremental can only handle one device.\n");
1399                         rv = 1;
1400                         break;
1401                 }
1402                 rv = Incremental(devlist->devname, verbose-quiet, runstop,
1403                                  ss, homehost, autof);
1404                 break;
1405         case AUTODETECT:
1406                 autodetect();
1407                 break;
1408         }
1409         exit(rv);
1410 }