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