release/src/router/mdadm/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 assume_clean = 0;
  78         char *symlinks = NULL;
  79         /* autof indicates whether and how to create device node.
  80          * bottom 3 bits are style.  Rest (when shifted) are number of parts
  81          * 0  - unset
  82          * 1  - don't create (no)
  83          * 2  - if is_standard, then create (yes)
  84          * 3  - create as 'md' - reject is_standard mdp (md)
  85          * 4  - create as 'mdp' - reject is_standard md (mdp)
  86          * 5  - default to md if not is_standard (md in config file)
  87          * 6  - default to mdp if not is_standard (part, or mdp in config file)
  88          */
  89         int autof = 0;
  90
  91         char *homehost = NULL;
  92         char sys_hostname[256];
  93         char *mailaddr = NULL;
  94         char *program = NULL;
  95         int delay = 0;
  96         int daemonise = 0;
  97         char *pidfile = NULL;
  98         int oneshot = 0;
  99         struct supertype *ss = NULL;
 100         int writemostly = 0;
 101         int re_add = 0;
 102         char *shortopt = short_options;
 103         int dosyslog = 0;
 104         int rebuild_map = 0;
 105         int auto_update_home = 0;
 106
 107         int copies;
 108         int print_help = 0;
 109
 110         int mdfd = -1;
 111
 112         srandom(time(0) ^ getpid());
 113
 114         ident.uuid_set=0;
 115         ident.level = UnSet;
 116         ident.raid_disks = UnSet;
 117         ident.super_minor= UnSet;
 118         ident.devices=0;
 119         ident.spare_group = NULL;
 120         ident.autof = 0;
 121         ident.st = NULL;
 122         ident.bitmap_fd = -1;
 123         ident.bitmap_file = NULL;
 124         ident.name[0] = 0;
 125
 126         while ((option_index = -1) ,
 127                (opt=getopt_long(argc, argv,
 128                                 shortopt, long_options,
 129                                 &option_index)) != -1) {
 130                 int newmode = mode;
 131                 /* firstly, some mode-independant options */
 132                 switch(opt) {
 133                 case 'h':
 134                         if (option_index > 0 &&
 135                             strcmp(long_options[option_index].name, "help-options")==0)
 136                                 print_help = 2;
 137                         else
 138                                 print_help = 1;
 139                         continue;
 140
 141                 case 'V':
 142                         fputs(Version, stderr);
 143                         exit(0);
 144
 145                 case 'v': verbose++;
 146                         continue;
 147
 148                 case 'q': quiet++;
 149                         continue;
 150
 151                 case 'b':
 152                         if (mode == ASSEMBLE || mode == BUILD || mode == CREATE || mode == GROW)
 153                                 break; /* b means bitmap */
 154                         brief = 1;
 155                         if (optarg) {
 156                                 fprintf(stderr, Name ": -b cannot have any extra immediately after it, sorry.\n");
 157                                 exit(2);
 158                         }
 159                         continue;
 160
 161                 case HomeHost:
 162                         homehost = optarg;
 163                         continue;
 164
 165                 case ':':
 166                 case '?':
 167                         fputs(Usage, stderr);
 168                         exit(2);
 169                 }
 170                 /* second, figure out the mode.
 171                  * Some options force the mode.  Others
 172                  * set the mode if it isn't already
 173                  */
 174
 175                 switch(opt) {
 176                 case '@': /* just incase they say --manage */
 177                         newmode = MANAGE;
 178                         shortopt = short_bitmap_auto_options;
 179                         break;
 180                 case 'a':
 181                 case 'r':
 182                 case 'f':
 183                 case ReAdd: /* re-add */
 184                         if (!mode) {
 185                                 newmode = MANAGE;
 186                                 shortopt = short_bitmap_auto_options;
 187                         }
 188                         break;
 189
 190                 case 'A': newmode = ASSEMBLE; shortopt = short_bitmap_auto_options; break;
 191                 case 'B': newmode = BUILD; shortopt = short_bitmap_auto_options; break;
 192                 case 'C': newmode = CREATE; shortopt = short_bitmap_auto_options; break;
 193                 case 'F': newmode = MONITOR;break;
 194                 case 'G': newmode = GROW; shortopt = short_bitmap_auto_options; break;
 195                 case 'I': newmode = INCREMENTAL; break;
 196
 197                 case '#':
 198                 case 'D':
 199                 case 'E':
 200                 case 'X':
 201                 case 'Q': newmode = MISC; break;
 202                 case 'R':
 203                 case 'S':
 204                 case 'o':
 205                 case 'w':
 206                 case 'W':
 207                 case 'K': if (!mode) newmode = MISC; break;
 208                 }
 209                 if (mode && newmode == mode) {
 210                         /* everybody happy ! */
 211                 } else if (mode && newmode != mode) {
 212                         /* not allowed.. */
 213                         fprintf(stderr, Name ": ");
 214                         if (option_index >= 0)
 215                                 fprintf(stderr, "--%s", long_options[option_index].name);
 216                         else
 217                                 fprintf(stderr, "-%c", opt);
 218                         fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
 219                                 map_num(modes, newmode),
 220                                 map_num(modes, mode));
 221                         exit(2);
 222                 } else if (!mode && newmode) {
 223                         mode = newmode;
 224                 } else {
 225                         /* special case of -c --help */
 226                         if (opt == 'c' &&
 227                             ( strncmp(optarg, "--h", 3)==0 ||
 228                               strncmp(optarg, "-h", 2)==0)) {
 229                                 fputs(Help_config, stderr);
 230                                 exit(0);
 231                         }
 232
 233                         /* If first option is a device, don't force the mode yet */
 234                         if (opt == 1) {
 235                                 if (devs_found == 0) {
 236                                         dv = malloc(sizeof(*dv));
 237                                         if (dv == NULL) {
 238                                                 fprintf(stderr, Name ": malloc failed\n");
 239                                                 exit(3);
 240                                         }
 241                                         dv->devname = optarg;
 242                                         dv->disposition = devmode;
 243                                         dv->writemostly = writemostly;
 244                                         dv->re_add = re_add;
 245                                         dv->used = 0;
 246                                         dv->next = NULL;
 247                                         *devlistend = dv;
 248                                         devlistend = &dv->next;
 249
 250                                         devs_found++;
 251                                         continue;
 252                                 }
 253                                 /* No mode yet, and this is the second device ... */
 254                                 fprintf(stderr, Name ": An option must be given to set the mode before a second device is listed\n");
 255                                 exit(2);
 256                         }
 257                         if (option_index >= 0)
 258                                 fprintf(stderr, Name ": --%s", long_options[option_index].name);
 259                         else
 260                                 fprintf(stderr, Name ": -%c", opt);
 261                         fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
 262                         exit(2);
 263                 }
 264
 265                 /* if we just set the mode, then done */
 266                 switch(opt) {
 267                 case '@':
 268                 case '#':
 269                 case 'A':
 270                 case 'B':
 271                 case 'C':
 272                 case 'F':
 273                 case 'G':
 274                 case 'I':
 275                         continue;
 276                 }
 277                 if (opt == 1) {
 278                         /* an undecorated option - must be a device name.
 279                          */
 280                         if (devs_found > 0 && mode == '@' && !devmode) {
 281                                 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
 282                                 exit(2);
 283                         }
 284                         if (devs_found > 0 && mode == 'G' && !devmode) {
 285                                 fprintf(stderr, Name ": Must give one of -a for devices do add: %s\n", optarg);
 286                                 exit(2);
 287                         }
 288                         dv = malloc(sizeof(*dv));
 289                         if (dv == NULL) {
 290                                 fprintf(stderr, Name ": malloc failed\n");
 291                                 exit(3);
 292                         }
 293                         dv->devname = optarg;
 294                         dv->disposition = devmode;
 295                         dv->writemostly = writemostly;
 296                         dv->re_add = re_add;
 297                         dv->next = NULL;
 298                         *devlistend = dv;
 299                         devlistend = &dv->next;
 300
 301                         devs_found++;
 302                         continue;
 303                 }
 304
 305                 /* We've got a mode, and opt is now something else which
 306                  * could depend on the mode */
 307 #define O(a,b) ((a<<8)|b)
 308                 switch (O(mode,opt)) {
 309                 case O(CREATE,'c'):
 310                 case O(BUILD,'c'): /* chunk or rounding */
 311                         if (chunk) {
 312                                 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
 313                                         "Second value is %s.\n", optarg);
 314                                 exit(2);
 315                         }
 316                         chunk = strtol(optarg, &c, 10);
 317                         if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
 318                                 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
 319                                         optarg);
 320                                 exit(2);
 321                         }
 322                         continue;
 323
 324                 case O(ASSEMBLE,AutoHomeHost):
 325                         auto_update_home = 1;
 326                         continue;
 327                 case O(INCREMENTAL, 'e'):
 328                 case O(CREATE,'e'):
 329                 case O(ASSEMBLE,'e'):
 330                 case O(MISC,'e'): /* set metadata (superblock) information */
 331                         if (ss) {
 332                                 fprintf(stderr, Name ": metadata information already given\n");
 333                                 exit(2);
 334                         }
 335                         for(i=0; !ss && superlist[i]; i++)
 336                                 ss = superlist[i]->match_metadata_desc(optarg);
 337
 338                         if (!ss) {
 339                                 fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
 340                                 exit(2);
 341                         }
 342                         max_disks = ss->max_devs;
 343                         continue;
 344
 345                 case O(MANAGE,'W'):
 346                 case O(BUILD,'W'):
 347                 case O(CREATE,'W'):
 348                         /* set write-mostly for following devices */
 349                         writemostly = 1;
 350                         continue;
 351
 352                 case O(GROW,'z'):
 353                 case O(CREATE,'z'): /* size */
 354                         if (size >= 0) {
 355                                 fprintf(stderr, Name ": size may only be specified once. "
 356                                         "Second value is %s.\n", optarg);
 357                                 exit(2);
 358                         }
 359                         if (strcmp(optarg, "max")==0)
 360                                 size = 0;
 361                         else {
 362                                 size = strtoll(optarg, &c, 10);
 363                                 if (!optarg[0] || *c || size < 4) {
 364                                         fprintf(stderr, Name ": invalid size: %s\n",
 365                                                 optarg);
 366                                         exit(2);
 367                                 }
 368                         }
 369                         continue;
 370
 371                 case O(GROW,'l'): /* hack - needed to understand layout */
 372                 case O(CREATE,'l'):
 373                 case O(BUILD,'l'): /* set raid level*/
 374                         if (level != UnSet) {
 375                                 fprintf(stderr, Name ": raid level may only be set once.  "
 376                                         "Second value is %s.\n", optarg);
 377                                 exit(2);
 378                         }
 379                         level = map_name(pers, optarg);
 380                         if (level == UnSet) {
 381                                 fprintf(stderr, Name ": invalid raid level: %s\n",
 382                                         optarg);
 383                                 exit(2);
 384                         }
 385                         if (level != 0 && level != -1 && level != 1 && level != -4 && level != -5 && mode == BUILD) {
 386                                 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
 387                                         optarg);
 388                                 exit(2);
 389                         }
 390                         if (sparedisks > 0 && level < 1 && level >= -1) {
 391                                 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
 392                                         optarg);
 393                                 exit(2);
 394                         }
 395                         ident.level = level;
 396                         continue;
 397
 398                 case O(CREATE,'p'): /* raid5 layout */
 399                 case O(BUILD,'p'): /* faulty layout */
 400                 case O(GROW, 'p'): /* faulty reconfig */
 401                         if (layout != UnSet) {
 402                                 fprintf(stderr,Name ": layout may only be sent once.  "
 403                                         "Second value was %s\n", optarg);
 404                                 exit(2);
 405                         }
 406                         switch(level) {
 407                         default:
 408                                 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
 409                                         map_num(pers, level));
 410                                 exit(2);
 411                         case UnSet:
 412                                 fprintf(stderr, Name ": raid level must be given before layout.\n");
 413                                 exit(2);
 414
 415                         case 5:
 416                         case 6:
 417                                 layout = map_name(r5layout, optarg);
 418                                 if (layout==UnSet) {
 419                                         fprintf(stderr, Name ": layout %s not understood for raid5.\n",
 420                                                 optarg);
 421                                         exit(2);
 422                                 }
 423                                 break;
 424
 425                         case 10:
 426                                 /* 'f', 'o' or 'n' followed by a number <= raid_disks */
 427                                 if ((optarg[0] !=  'n' && optarg[0] != 'f' && optarg[0] != 'o') ||
 428                                     (copies = strtoul(optarg+1, &cp, 10)) < 1 ||
 429                                     copies > 200 ||
 430                                     *cp) {
 431                                         fprintf(stderr, Name ": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
 432                                         exit(2);
 433                                 }
 434                                 if (optarg[0] == 'n')
 435                                         layout = 256 + copies;
 436                                 else if (optarg[0] == 'o')
 437                                         layout = 0x10000 + (copies<<8) + 1;
 438                                 else
 439                                         layout = 1 + (copies<<8);
 440                                 break;
 441                         case -5: /* Faulty
 442                                   * modeNNN
 443                                   */
 444
 445                         {
 446                                 int ln = strcspn(optarg, "0123456789");
 447                                 char *m = strdup(optarg);
 448                                 int mode;
 449                                 m[ln] = 0;
 450                                 mode = map_name(faultylayout, m);
 451                                 if (mode == UnSet) {
 452                                         fprintf(stderr, Name ": layout %s not understood for faulty.\n",
 453                                                 optarg);
 454                                         exit(2);
 455                                 }
 456                                 layout = mode | (atoi(optarg+ln)<< ModeShift);
 457                         }
 458                         }
 459                         continue;
 460
 461                 case O(CREATE,AssumeClean):
 462                 case O(BUILD,AssumeClean): /* assume clean */
 463                         assume_clean = 1;
 464                         continue;
 465
 466                 case O(GROW,'n'):
 467                 case O(CREATE,'n'):
 468                 case O(BUILD,'n'): /* number of raid disks */
 469                         if (raiddisks) {
 470                                 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
 471                                         raiddisks, optarg);
 472                                 exit(2);
 473                         }
 474                         raiddisks = strtol(optarg, &c, 10);
 475                         if (!optarg[0] || *c || raiddisks<=0) {
 476                                 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
 477                                         optarg);
 478                                 exit(2);
 479                         }
 480                         ident.raid_disks = raiddisks;
 481                         continue;
 482
 483                 case O(CREATE,'x'): /* number of spare (eXtra) discs */
 484                         if (sparedisks) {
 485                                 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
 486                                         sparedisks, optarg);
 487                                 exit(2);
 488                         }
 489                         if (level != UnSet && level <= 0 && level >= -1) {
 490                                 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
 491                                         level);
 492                                 exit(2);
 493                         }
 494                         sparedisks = strtol(optarg, &c, 10);
 495                         if (!optarg[0] || *c || sparedisks < 0) {
 496                                 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
 497                                         optarg);
 498                                 exit(2);
 499                         }
 500                         continue;
 501
 502                 case O(CREATE,'a'):
 503                 case O(BUILD,'a'):
 504                 case O(ASSEMBLE,'a'): /* auto-creation of device node */
 505                         autof = parse_auto(optarg, "--auto flag", 0);
 506                         continue;
 507
 508                 case O(CREATE,Symlinks):
 509                 case O(BUILD,Symlinks):
 510                 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
 511                         symlinks = optarg;
 512                         continue;
 513
 514                 case O(BUILD,'f'): /* force honouring '-n 1' */
 515                 case O(GROW,'f'): /* ditto */
 516                 case O(CREATE,'f'): /* force honouring of device list */
 517                 case O(ASSEMBLE,'f'): /* force assembly */
 518                 case O(MISC,'f'): /* force zero */
 519                         force=1;
 520                         continue;
 521
 522                         /* now for the Assemble options */
 523                 case O(CREATE,'u'): /* uuid of array */
 524                 case O(ASSEMBLE,'u'): /* uuid of array */
 525                         if (ident.uuid_set) {
 526                                 fprintf(stderr, Name ": uuid cannot be set twice.  "
 527                                         "Second value %s.\n", optarg);
 528                                 exit(2);
 529                         }
 530                         if (parse_uuid(optarg, ident.uuid))
 531                                 ident.uuid_set = 1;
 532                         else {
 533                                 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
 534                                 exit(2);
 535                         }
 536                         continue;
 537
 538                 case O(CREATE,'N'):
 539                 case O(ASSEMBLE,'N'):
 540                         if (ident.name[0]) {
 541                                 fprintf(stderr, Name ": name cannot be set twice.   "
 542                                         "Second value %s.\n", optarg);
 543                                 exit(2);
 544                         }
 545                         if (strlen(optarg) > 32) {
 546                                 fprintf(stderr, Name ": name '%s' is too long, 32 chars max.\n",
 547                                         optarg);
 548                                 exit(2);
 549                         }
 550                         strcpy(ident.name, optarg);
 551                         continue;
 552
 553                 case O(ASSEMBLE,'m'): /* super-minor for array */
 554                         if (ident.super_minor != UnSet) {
 555                                 fprintf(stderr, Name ": super-minor cannot be set twice.  "
 556                                         "Second value: %s.\n", optarg);
 557                                 exit(2);
 558                         }
 559                         if (strcmp(optarg, "dev")==0)
 560                                 ident.super_minor = -2;
 561                         else {
 562                                 ident.super_minor = strtoul(optarg, &cp, 10);
 563                                 if (!optarg[0] || *cp) {
 564                                         fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
 565                                         exit(2);
 566                                 }
 567                         }
 568                         continue;
 569
 570                 case O(ASSEMBLE,'U'): /* update the superblock */
 571                         if (update) {
 572                                 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
 573                                         update, optarg);
 574                                 exit(2);
 575                         }
 576                         update = optarg;
 577                         if (strcmp(update, "sparc2.2")==0)
 578                                 continue;
 579                         if (strcmp(update, "super-minor") == 0)
 580                                 continue;
 581                         if (strcmp(update, "summaries")==0)
 582                                 continue;
 583                         if (strcmp(update, "resync")==0)
 584                                 continue;
 585                         if (strcmp(update, "uuid")==0)
 586                                 continue;
 587                         if (strcmp(update, "name")==0)
 588                                 continue;
 589                         if (strcmp(update, "homehost")==0)
 590                                 continue;
 591                         if (strcmp(update, "devicesize")==0)
 592                                 continue;
 593                         if (strcmp(update, "byteorder")==0) {
 594                                 if (ss) {
 595                                         fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");
 596                                         exit(2);
 597                                 }
 598                                 for(i=0; !ss && superlist[i]; i++)
 599                                         ss = superlist[i]->match_metadata_desc("0.swap");
 600                                 if (!ss) {
 601                                         fprintf(stderr, Name ": INTERNAL ERROR cannot find 0.swap\n");
 602                                         exit(2);
 603                                 }
 604
 605                                 continue;
 606                         }
 607                         if (strcmp(update,"?") == 0 || strcmp(update, "help") == 0)
 608                                 fprintf(stderr, Name ": ");
 609                         else
 610                                 fprintf(stderr, Name ": '--update=%s' is invalid.  ", update);
 611                         fprintf(stderr, "Valid --update options are:\n"
 612                 "     'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
 613                 "     'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
 614                         exit(2);
 615
 616                 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
 617                         runstop = -1; /* --stop isn't allowed for --assemble, so we overload slightly */
 618                         continue;
 619
 620                 case O(ASSEMBLE,'c'): /* config file */
 621                 case O(MISC, 'c'):
 622                 case O(MONITOR,'c'):
 623                         if (configfile) {
 624                                 fprintf(stderr, Name ": configfile cannot be set twice.  "
 625                                         "Second value is %s.\n", optarg);
 626                                 exit(2);
 627                         }
 628                         configfile = optarg;
 629                         set_conffile(configfile);
 630                         /* FIXME possibly check that config file exists.  Even parse it */
 631                         continue;
 632                 case O(ASSEMBLE,'s'): /* scan */
 633                 case O(MISC,'s'):
 634                 case O(MONITOR,'s'):
 635                 case O(INCREMENTAL,'s'):
 636                         scan = 1;
 637                         continue;
 638
 639                 case O(MONITOR,'m'): /* mail address */
 640                         if (mailaddr)
 641                                 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
 642                                         optarg);
 643                         else
 644                                 mailaddr = optarg;
 645                         continue;
 646
 647                 case O(MONITOR,'p'): /* alert program */
 648                         if (program)
 649                                 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
 650                                         optarg);
 651                         else
 652                                 program = optarg;
 653                         continue;
 654
 655                 case O(MONITOR,'d'): /* delay in seconds */
 656                 case O(GROW, 'd'):
 657                 case O(BUILD,'d'): /* delay for bitmap updates */
 658                 case O(CREATE,'d'):
 659                         if (delay)
 660                                 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
 661                                         optarg);
 662                         else {
 663                                 delay = strtol(optarg, &c, 10);
 664                                 if (!optarg[0] || *c || delay<1) {
 665                                         fprintf(stderr, Name ": invalid delay: %s\n",
 666                                                 optarg);
 667                                         exit(2);
 668                                 }
 669                         }
 670                         continue;
 671                 case O(MONITOR,'f'): /* daemonise */
 672                         daemonise = 1;
 673                         continue;
 674                 case O(MONITOR,'i'): /* pid */
 675                         if (pidfile)
 676                                 fprintf(stderr, Name ": only specify one pid file. %s ignored.\n",
 677                                         optarg);
 678                         else
 679                                 pidfile = optarg;
 680                         continue;
 681                 case O(MONITOR,'1'): /* oneshot */
 682                         oneshot = 1;
 683                         continue;
 684                 case O(MONITOR,'t'): /* test */
 685                         test = 1;
 686                         continue;
 687                 case O(MONITOR,'y'): /* log messages to syslog */
 688                         openlog("mdadm", 0, SYSLOG_FACILITY);
 689                         dosyslog = 1;
 690                         continue;
 691
 692                         /* now the general management options.  Some are applicable
 693                          * to other modes. None have arguments.
 694                          */
 695                 case O(GROW,'a'):
 696                 case O(MANAGE,'a'): /* add a drive */
 697                         devmode = 'a';
 698                         re_add = 0;
 699                         continue;
 700                 case O(MANAGE,ReAdd):
 701                         devmode = 'a';
 702                         re_add = 1;
 703                         continue;
 704                 case O(MANAGE,'r'): /* remove a drive */
 705                         devmode = 'r';
 706                         continue;
 707                 case O(MANAGE,'f'): /* set faulty */
 708                         devmode = 'f';
 709                         continue;
 710                 case O(INCREMENTAL,'R'):
 711                 case O(MANAGE,'R'):
 712                 case O(ASSEMBLE,'R'):
 713                 case O(BUILD,'R'):
 714                 case O(CREATE,'R'): /* Run the array */
 715                         if (runstop < 0) {
 716                                 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
 717                                 exit(2);
 718                         }
 719                         runstop = 1;
 720                         continue;
 721                 case O(MANAGE,'S'):
 722                         if (runstop > 0) {
 723                                 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
 724                                 exit(2);
 725                         }
 726                         runstop = -1;
 727                         continue;
 728
 729                 case O(MANAGE,'o'):
 730                         if (readonly < 0) {
 731                                 fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
 732                                 exit(2);
 733                         }
 734                         readonly = 1;
 735                         continue;
 736                 case O(MANAGE,'w'):
 737                         if (readonly > 0) {
 738                                 fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
 739                                 exit(2);
 740                         }
 741                         readonly = -1;
 742                         continue;
 743
 744                 case O(MISC,'Q'):
 745                 case O(MISC,'D'):
 746                 case O(MISC,'E'):
 747                 case O(MISC,'K'):
 748                 case O(MISC,'R'):
 749                 case O(MISC,'S'):
 750                 case O(MISC,'X'):
 751                 case O(MISC,'o'):
 752                 case O(MISC,'w'):
 753                 case O(MISC,'W'):
 754                         if (devmode && devmode != opt &&
 755                             (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
 756                                 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
 757                                         devmode =='E'?opt:devmode);
 758                                 exit(2);
 759                         }
 760                         devmode = opt;
 761                         continue;
 762                 case O(MISC,'t'):
 763                         test = 1;
 764                         continue;
 765
 766                 case O(MISC, Sparc22):
 767                         if (devmode != 'E') {
 768                                 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
 769                                 exit(2);
 770                         }
 771                         SparcAdjust = 1;
 772                         continue;
 773
 774                 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
 775                         if (!optarg) {
 776                                 fprintf(stderr, Name ": bitmap file needed with -b in --assemble mode\n");
 777                                 exit(2);
 778                         }
 779                         if (strcmp(optarg, "internal")==0) {
 780                                 fprintf(stderr, Name ": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
 781                                 continue;
 782                         }
 783                         bitmap_fd = open(optarg, O_RDWR);
 784                         if (!*optarg || bitmap_fd < 0) {
 785                                 fprintf(stderr, Name ": cannot open bitmap file %s: %s\n", optarg, strerror(errno));
 786                                 exit(2);
 787                         }
 788                         ident.bitmap_fd = bitmap_fd; /* for Assemble */
 789                         continue;
 790
 791                 case O(ASSEMBLE, BackupFile):
 792                 case O(GROW, BackupFile):
 793                         /* Specify a file into which grow might place a backup,
 794                          * or from which assemble might recover a backup
 795                          */
 796                         if (backup_file) {
 797                                 fprintf(stderr, Name ": backup file already specified, rejecting %s\n", optarg);
 798                                 exit(2);
 799                         }
 800                         backup_file = optarg;
 801                         continue;
 802
 803                 case O(GROW,'b'):
 804                 case O(BUILD,'b'):
 805                 case O(CREATE,'b'): /* here we create the bitmap */
 806                         if (strcmp(optarg, "internal")== 0 ||
 807                             strcmp(optarg, "none")== 0 ||
 808                             strchr(optarg, '/') != NULL) {
 809                                 bitmap_file = optarg;
 810                                 continue;
 811                         }
 812                         /* probable typo */
 813                         fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n");
 814                         exit(2);
 815
 816                 case O(GROW,BitmapChunk):
 817                 case O(BUILD,BitmapChunk):
 818                 case O(CREATE,BitmapChunk): /* bitmap chunksize */
 819                         bitmap_chunk = strtol(optarg, &c, 10);
 820                         if (!optarg[0] || *c || bitmap_chunk < 0 ||
 821                                         bitmap_chunk & (bitmap_chunk - 1)) {
 822                                 fprintf(stderr, Name ": invalid bitmap chunksize: %s\n",
 823                                                 optarg);
 824                                 exit(2);
 825                         }
 826                         /* convert K to B, chunk of 0K means 512B */
 827                         bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
 828                         continue;
 829
 830                 case O(BUILD, WriteBehind):
 831                 case O(CREATE, WriteBehind): /* write-behind mode */
 832                         write_behind = DEFAULT_MAX_WRITE_BEHIND;
 833                         if (optarg) {
 834                                 write_behind = strtol(optarg, &c, 10);
 835                                 if (write_behind < 0 || *c ||
 836                                     write_behind > 16383) {
 837                                         fprintf(stderr, Name ": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg);
 838                                         exit(2);
 839                                 }
 840                         }
 841                         continue;
 842
 843                 case O(INCREMENTAL, 'r'):
 844                         rebuild_map = 1;
 845                         continue;
 846                 }
 847                 /* We have now processed all the valid options. Anything else is
 848                  * an error
 849                  */
 850                 if (option_index > 0)
 851                         fprintf(stderr, Name ":option --%s not valid in %s mode\n",
 852                                 long_options[option_index].name,
 853                                 map_num(modes, mode));
 854                 else
 855                         fprintf(stderr, Name ": option -%c not valid in %s mode\n",
 856                                 opt, map_num(modes, mode));
 857                 exit(2);
 858
 859         }
 860
 861         if (print_help) {
 862                 char *help_text = Help;
 863                 if (print_help == 2)
 864                         help_text = OptionHelp;
 865                 else
 866                         switch (mode) {
 867                         case ASSEMBLE : help_text = Help_assemble; break;
 868                         case BUILD    : help_text = Help_build; break;
 869                         case CREATE   : help_text = Help_create; break;
 870                         case MANAGE   : help_text = Help_manage; break;
 871                         case MISC     : help_text = Help_misc; break;
 872                         case MONITOR  : help_text = Help_monitor; break;
 873                         case GROW     : help_text = Help_grow; break;
 874                         case INCREMENTAL:help_text= Help_incr; break;
 875                         }
 876                 fputs(help_text,stderr);
 877                 exit(0);
 878         }
 879
 880         if (!mode && devs_found) {
 881                 mode = MISC;
 882                 devmode = 'Q';
 883                 if (devlist->disposition == 0)
 884                         devlist->disposition = devmode;
 885         }
 886         if (!mode) {
 887                 fputs(Usage, stderr);
 888                 exit(2);
 889         }
 890
 891         if (symlinks) {
 892                 struct createinfo *ci = conf_get_create_info();
 893
 894                 if (strcasecmp(symlinks, "yes") == 0)
 895                         ci->symlinks = 1;
 896                 else if (strcasecmp(symlinks, "no") == 0)
 897                         ci->symlinks = 0;
 898                 else {
 899                         fprintf(stderr, Name ": option --symlinks must be 'no' or 'yes'\n");
 900                         exit(2);
 901                 }
 902         }
 903         /* Ok, got the option parsing out of the way
 904          * hopefully it's mostly right but there might be some stuff
 905          * missing
 906          *
 907          * That is mosty checked in the per-mode stuff but...
 908          *
 909          * For @,B,C  and A without -s, the first device listed must be an md device
 910          * we check that here and open it.
 911          */
 912
 913         if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
 914             (mode == ASSEMBLE && ! scan)) {
 915                 if (devs_found < 1) {
 916                         fprintf(stderr, Name ": an md device must be given in this mode\n");
 917                         exit(2);
 918                 }
 919                 if ((int)ident.super_minor == -2 && autof) {
 920                         fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
 921                         exit(2);
 922                 }
 923                 if (mode == MANAGE || mode == GROW)
 924                         autof=1; /* Don't create */
 925                 mdfd = open_mddev(devlist->devname, autof);
 926                 if (mdfd < 0)
 927                         exit(1);
 928                 if ((int)ident.super_minor == -2) {
 929                         struct stat stb;
 930                         fstat(mdfd, &stb);
 931                         ident.super_minor = minor(stb.st_rdev);
 932                 }
 933         }
 934
 935         if (raiddisks) {
 936                 if (raiddisks > max_disks) {
 937                         fprintf(stderr, Name ": invalid number of raid devices: %d\n",
 938                                 raiddisks);
 939                         exit(2);
 940                 }
 941                 if (raiddisks == 1 &&  !force && level != -5) {
 942                         fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
 943                                 "     a mistake.  If you really mean it you will need to specify --force before\n"
 944                                 "     setting the number of drives.\n");
 945                         exit(2);
 946                 }
 947         }
 948         if (sparedisks) {
 949                 if ( sparedisks > max_disks - raiddisks) {
 950                         fprintf(stderr, Name ": invalid number of spare-devices: %d\n",
 951                                 sparedisks);
 952                         exit(2);
 953                 }
 954         }
 955
 956         if (homehost == NULL)
 957                 homehost = conf_get_homehost();
 958         if (homehost && strcmp(homehost, "<system>")==0) {
 959                 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
 960                         sys_hostname[sizeof(sys_hostname)-1] = 0;
 961                         homehost = sys_hostname;
 962                 }
 963         }
 964
 965         rv = 0;
 966         switch(mode) {
 967         case MANAGE:
 968                 /* readonly, add/remove, readwrite, runstop */
 969                 if (readonly>0)
 970                         rv = Manage_ro(devlist->devname, mdfd, readonly);
 971                 if (!rv && devs_found>1)
 972                         rv = Manage_subdevs(devlist->devname, mdfd,
 973                                             devlist->next, verbose-quiet);
 974                 if (!rv && readonly < 0)
 975                         rv = Manage_ro(devlist->devname, mdfd, readonly);
 976                 if (!rv && runstop)
 977                         rv = Manage_runstop(devlist->devname, mdfd, runstop, quiet);
 978                 break;
 979         case ASSEMBLE:
 980                 if (devs_found == 1 && ident.uuid_set == 0 &&
 981                     ident.super_minor == UnSet && ident.name[0] == 0 && !scan ) {
 982                         /* Only a device has been given, so get details from config file */
 983                         mddev_ident_t array_ident = conf_get_ident(devlist->devname);
 984                         if (array_ident == NULL) {
 985                                 fprintf(stderr, Name ": %s not identified in config file.\n",
 986                                         devlist->devname);
 987                                 rv |= 1;
 988                         } else {
 989                                 mdfd = open_mddev(devlist->devname,
 990                                                   array_ident->autof ? array_ident->autof : autof);
 991                                 if (mdfd < 0)
 992                                         rv |= 1;
 993                                 else {
 994                                         rv |= Assemble(ss, devlist->devname, mdfd, array_ident,
 995                                                        NULL, backup_file,
 996                                                        readonly, runstop, update, homehost, verbose-quiet, force);
 997                                         close(mdfd);
 998                                 }
 999                         }
1000                 } else if (!scan)
1001                         rv = Assemble(ss, devlist->devname, mdfd, &ident,
1002                                       devlist->next, backup_file,
1003                                       readonly, runstop, update, homehost, verbose-quiet, force);
1004                 else if (devs_found>0) {
1005                         if (update && devs_found > 1) {
1006                                 fprintf(stderr, Name ": can only update a single array at a time\n");
1007                                 exit(1);
1008                         }
1009                         if (backup_file && devs_found > 1) {
1010                                 fprintf(stderr, Name ": can only assemble a single array when providing a backup file.\n");
1011                                 exit(1);
1012                         }
1013                         for (dv = devlist ; dv ; dv=dv->next) {
1014                                 mddev_ident_t array_ident = conf_get_ident(dv->devname);
1015                                 if (array_ident == NULL) {
1016                                         fprintf(stderr, Name ": %s not identified in config file.\n",
1017                                                 dv->devname);
1018                                         rv |= 1;
1019                                         continue;
1020                                 }
1021                                 mdfd = open_mddev(dv->devname,
1022                                                   array_ident->autof ?array_ident->autof : autof);
1023                                 if (mdfd < 0) {
1024                                         rv |= 1;
1025                                         continue;
1026                                 }
1027                                 rv |= Assemble(ss, dv->devname, mdfd, array_ident,
1028                                                NULL, backup_file,
1029                                                readonly, runstop, update, homehost, verbose-quiet, force);
1030                                 close(mdfd);
1031                         }
1032                 } else {
1033                         mddev_ident_t array_list =  conf_get_ident(NULL);
1034                         mddev_dev_t devlist = conf_get_devs();
1035                         int cnt = 0;
1036                         if (devlist == NULL) {
1037                                 fprintf(stderr, Name ": No devices listed in conf file were found.\n");
1038                                 exit(1);
1039                         }
1040                         if (update) {
1041                                 fprintf(stderr, Name ": --update not meaningful with a --scan assembly.\n");
1042                                 exit(1);
1043                         }
1044                         if (backup_file) {
1045                                 fprintf(stderr, Name ": --backup_file not meaningful with a --scan assembly.\n");
1046                                 exit(1);
1047                         }
1048                         for (; array_list; array_list = array_list->next) {
1049                                 mdu_array_info_t array;
1050                                 mdfd = open_mddev(array_list->devname,
1051                                                   array_list->autof ? array_list->autof : autof);
1052                                 if (mdfd < 0) {
1053                                         rv |= 1;
1054                                         continue;
1055                                 }
1056                                 if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
1057                                         /* already assembled, skip */
1058                                         cnt++;
1059                                 else {
1060                                         rv |= Assemble(ss, array_list->devname, mdfd,
1061                                                        array_list,
1062                                                        NULL, NULL,
1063                                                        readonly, runstop, NULL, homehost, verbose-quiet, force);
1064                                         if (rv == 0) cnt++;
1065                                 }
1066                                 close(mdfd);
1067                         }
1068                         if (homehost) {
1069                                 /* Maybe we can auto-assemble something.
1070                                  * Repeatedly call Assemble in auto-assmble mode
1071                                  * until it fails
1072                                  */
1073                                 int rv2;
1074                                 int acnt;
1075                                 ident.autof = autof;
1076                                 do {
1077                                         acnt = 0;
1078                                         do {
1079                                                 rv2 = Assemble(ss, NULL, -1,
1080                                                                &ident,
1081                                                                NULL, NULL,
1082                                                                readonly, runstop, NULL, homehost, verbose-quiet, force);
1083                                                 if (rv2==0) {
1084                                                         cnt++;
1085                                                         acnt++;
1086                                                 }
1087                                                 if (rv2 == 1)
1088                                                         /* found something so even though assembly failed  we
1089                                                          * want to avoid auto-updates
1090                                                          */
1091                                                         auto_update_home = 0;
1092                                         } while (rv2!=2);
1093                                         /* Incase there are stacked devices, we need to go around again */
1094                                 } while (acnt);
1095                                 if (cnt == 0 && auto_update_home && homehost) {
1096                                         /* Nothing found, maybe we need to bootstrap homehost info */
1097                                         do {
1098                                                 acnt = 0;
1099                                                 do {
1100                                                         rv2 = Assemble(ss, NULL, -1,
1101                                                                        &ident,
1102                                                                        NULL, NULL,
1103                                                                        readonly, runstop, "homehost", homehost, verbose-quiet, force);
1104                                                         if (rv2==0) {
1105                                                                 cnt++;
1106                                                                 acnt++;
1107                                                         }
1108                                                 } while (rv2!=2);
1109                                                 /* Incase there are stacked devices, we need to go around again */
1110                                         } while (acnt);
1111                                 }
1112                                 if (cnt == 0 && rv == 0) {
1113                                         fprintf(stderr, Name ": No arrays found in config file or automatically\n");
1114                                         rv = 1;
1115                                 }
1116                         } else if (cnt == 0 && rv == 0) {
1117                                 fprintf(stderr, Name ": No arrays found in config file\n");
1118                                 rv = 1;
1119                         }
1120                 }
1121                 break;
1122         case BUILD:
1123                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1124                 if (write_behind && !bitmap_file) {
1125                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1126                         rv = 1;
1127                         break;
1128                 }
1129
1130                 if (bitmap_file) {
1131                         if (strcmp(bitmap_file, "internal")==0) {
1132                                 fprintf(stderr, Name ": 'internal' bitmaps not supported with --build\n");
1133                                 rv |= 1;
1134                                 break;
1135                         }
1136                 }
1137                 rv = Build(devlist->devname, mdfd, chunk, level, layout,
1138                            raiddisks, devlist->next, assume_clean,
1139                            bitmap_file, bitmap_chunk, write_behind, delay, verbose-quiet);
1140                 break;
1141         case CREATE:
1142                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1143                 if (write_behind && !bitmap_file) {
1144                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1145                         rv = 1;
1146                         break;
1147                 }
1148
1149                 rv = Create(ss, devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
1150                             raiddisks, sparedisks, ident.name, homehost,
1151                             ident.uuid_set ? ident.uuid : NULL,
1152                             devs_found-1, devlist->next, runstop, verbose-quiet, force, assume_clean,
1153                             bitmap_file, bitmap_chunk, write_behind, delay);
1154                 break;
1155         case MISC:
1156                 if (devmode == 'E') {
1157                         if (devlist == NULL && !scan) {
1158                                 fprintf(stderr, Name ": No devices to examine\n");
1159                                 exit(2);
1160                         }
1161                         if (devlist == NULL)
1162                                 devlist = conf_get_devs();
1163                         if (devlist == NULL) {
1164                                 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1165                                 exit(1);
1166                         }
1167                         if (brief && verbose)
1168                                 brief = 2;
1169                         rv = Examine(devlist, scan?(verbose>1?0:verbose+1):brief, scan, SparcAdjust, ss, homehost);
1170                 } else {
1171                         if (devlist == NULL) {
1172                                 if (devmode=='D' && scan) {
1173                                         /* apply --detail to all devices in /proc/mdstat */
1174                                         struct mdstat_ent *ms = mdstat_read(0, 1);
1175                                         struct mdstat_ent *e;
1176                                         for (e=ms ; e ; e=e->next) {
1177                                                 char *name = get_md_name(e->devnum);
1178
1179                                                 if (!name) {
1180                                                         fprintf(stderr, Name ": cannot find device file for %s\n",
1181                                                                 e->dev);
1182                                                         continue;
1183                                                 }
1184                                                 rv |= Detail(name, verbose>1?0:verbose+1, test, homehost);
1185                                                 put_md_name(name);
1186                                         }
1187                                 } else  if (devmode == 'S' && scan) {
1188                                         /* apply --stop to all devices in /proc/mdstat */
1189                                         /* Due to possible stacking of devices, repeat until
1190                                          * nothing more can be stopped
1191                                          */
1192                                         int progress=1, err;
1193                                         int last = 0;
1194                                         do {
1195                                                 struct mdstat_ent *ms = mdstat_read(0, 0);
1196                                                 struct mdstat_ent *e;
1197
1198                                                 if (!progress) last = 1;
1199                                                 progress = 0; err = 0;
1200                                                 for (e=ms ; e ; e=e->next) {
1201                                                         char *name = get_md_name(e->devnum);
1202
1203                                                         if (!name) {
1204                                                                 fprintf(stderr, Name ": cannot find device file for %s\n",
1205                                                                         e->dev);
1206                                                                 continue;
1207                                                         }
1208                                                         mdfd = open_mddev(name, 1);
1209                                                         if (mdfd >= 0) {
1210                                                                 if (Manage_runstop(name, mdfd, -1, quiet?1:last?0:-1))
1211                                                                         err = 1;
1212                                                                 else
1213                                                                         progress = 1;
1214                                                                 close(mdfd);
1215                                                         }
1216
1217                                                         put_md_name(name);
1218                                                 }
1219                                         } while (!last && err);
1220                                         if (err) rv |= 1;
1221                                 } else {
1222                                         fprintf(stderr, Name ": No devices given.\n");
1223                                         exit(2);
1224                                 }
1225                         }
1226                         for (dv=devlist ; dv; dv=dv->next) {
1227                                 switch(dv->disposition) {
1228                                 case 'D':
1229                                         rv |= Detail(dv->devname, brief?1+verbose:0, test, homehost); continue;
1230                                 case 'K': /* Zero superblock */
1231                                         rv |= Kill(dv->devname, force, quiet); continue;
1232                                 case 'Q':
1233                                         rv |= Query(dv->devname); continue;
1234                                 case 'X':
1235                                         rv |= ExamineBitmap(dv->devname, brief, ss); continue;
1236                                 case 'W':
1237                                         rv |= Wait(dv->devname); continue;
1238                                 }
1239                                 mdfd = open_mddev(dv->devname, 1);
1240                                 if (mdfd>=0) {
1241                                         switch(dv->disposition) {
1242                                         case 'R':
1243                                                 rv |= Manage_runstop(dv->devname, mdfd, 1, quiet); break;
1244                                         case 'S':
1245                                                 rv |= Manage_runstop(dv->devname, mdfd, -1, quiet); break;
1246                                         case 'o':
1247                                                 rv |= Manage_ro(dv->devname, mdfd, 1); break;
1248                                         case 'w':
1249                                                 rv |= Manage_ro(dv->devname, mdfd, -1); break;
1250                                         }
1251                                         close(mdfd);
1252                                 } else
1253                                         rv |= 1;
1254                         }
1255                 }
1256                 break;
1257         case MONITOR:
1258                 if (!devlist && !scan) {
1259                         fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
1260                         rv = 1;
1261                         break;
1262                 }
1263                 if (pidfile && !daemonise) {
1264                         fprintf(stderr, Name ": Cannot write a pid file when not in daemon mode\n");
1265                         rv = 1;
1266                         break;
1267                 }
1268                 rv= Monitor(devlist, mailaddr, program,
1269                             delay?delay:60, daemonise, scan, oneshot,
1270                             dosyslog, test, pidfile);
1271                 break;
1272
1273         case GROW:
1274                 if (devs_found > 1) {
1275
1276                         /* must be '-a'. */
1277                         if (size >= 0 || raiddisks) {
1278                                 fprintf(stderr, Name ": --size, --raiddisks, and --add are exclusing in --grow mode\n");
1279                                 rv = 1;
1280                                 break;
1281                         }
1282                         for (dv=devlist->next; dv ; dv=dv->next) {
1283                                 rv = Grow_Add_device(devlist->devname, mdfd, dv->devname);
1284                                 if (rv)
1285                                         break;
1286                         }
1287                 } else if ((size >= 0) + (raiddisks != 0) +  (layout != UnSet) + (bitmap_file != NULL)> 1) {
1288                         fprintf(stderr, Name ": can change at most one of size, raiddisks, bitmap, and layout\n");
1289                         rv = 1;
1290                         break;
1291                 } else if (layout != UnSet)
1292                         rv = Manage_reconfig(devlist->devname, mdfd, layout);
1293                 else if (size >= 0 || raiddisks)
1294                         rv = Grow_reshape(devlist->devname, mdfd, quiet, backup_file,
1295                                           size, level, layout, chunk, raiddisks);
1296                 else if (bitmap_file) {
1297                         if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1298                         rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file,
1299                                             bitmap_chunk, delay, write_behind, force);
1300                 } else
1301                         fprintf(stderr, Name ": no changes to --grow\n");
1302                 break;
1303         case INCREMENTAL:
1304                 if (rebuild_map) {
1305                         RebuildMap();
1306                 }
1307                 if (scan) {
1308                         if (runstop <= 0) {
1309                                 fprintf(stderr, Name
1310                          ": --incremental --scan meaningless without --run.\n");
1311                                 break;
1312                         }
1313                         rv = IncrementalScan(verbose);
1314                 }
1315                 if (!devlist) {
1316                         if (!rebuild_map && !scan) {
1317                                 fprintf(stderr, Name
1318                                         ": --incremental requires a device.\n");
1319                                 rv = 1;
1320                         }
1321                         break;
1322                 }
1323                 if (devlist->next) {
1324                         fprintf(stderr, Name
1325                                ": --incremental can only handle one device.\n");
1326                         rv = 1;
1327                         break;
1328                 }
1329                 rv = Incremental(devlist->devname, verbose-quiet, runstop,
1330                                  ss, homehost, autof);
1331         }
1332         exit(rv);
1333 }