mdadm.c

   1 /*
   2  * mdadm - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
   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
  30 #include "mdadm.h"
  31 #include "md_p.h"
  32
  33 int open_mddev(char *dev)
  34 {
  35         int mdfd = open(dev, O_RDWR, 0);
  36         if (mdfd < 0)
  37                 fprintf(stderr, Name ": error opening %s: %s\n",
  38                         dev, strerror(errno));
  39         else if (md_get_version(mdfd) <= 0) {
  40                 fprintf(stderr, Name ": %s does not appear to be an md device\n",
  41                         dev);
  42                 close(mdfd);
  43                 mdfd = -1;
  44         }
  45         return mdfd;
  46 }
  47
  48
  49
  50 int main(int argc, char *argv[])
  51 {
  52         int mode = 0;
  53         int opt;
  54         int option_index;
  55         char *help_text;
  56         char *c;
  57         int rv;
  58
  59         int chunk = 0;
  60         int size = 0;
  61         int level = -10;
  62         int layout = -1;
  63         int raiddisks = 0;
  64         int sparedisks = 0;
  65         struct mddev_ident_s ident;
  66         char *configfile = NULL;
  67         char *cp;
  68         char *update = NULL;
  69         int scan = 0;
  70         char devmode = 0;
  71         int runstop = 0;
  72         int readonly = 0;
  73         int SparcAdjust = 0;
  74         mddev_dev_t devlist = NULL;
  75         mddev_dev_t *devlistend = & devlist;
  76         mddev_dev_t dv;
  77         int devs_found = 0;
  78         int verbose = 0;
  79         int brief = 0;
  80         int force = 0;
  81
  82         char *mailaddr = NULL;
  83         char *program = NULL;
  84         int delay = 0;
  85
  86         int mdfd = -1;
  87
  88         ident.uuid_set=0;
  89         ident.level = -10;
  90         ident.raid_disks = -1;
  91         ident.super_minor= -1;
  92         ident.devices=0;
  93
  94         while ((option_index = -1) ,
  95                (opt=getopt_long(argc, argv,
  96                                 short_options, long_options,
  97                                 &option_index)) != -1) {
  98                 int newmode = mode;
  99                 /* firstly, so mode-independant options */
 100                 switch(opt) {
 101                 case 'h':
 102                         help_text = Help;
 103                         switch (mode) {
 104                         case ASSEMBLE : help_text = Help_assemble; break;
 105                         case BUILD    : help_text = Help_build; break;
 106                         case CREATE   : help_text = Help_create; break;
 107                         case MANAGE   : help_text = Help_manage; break;
 108                         case MISC     : help_text = Help_misc; break;
 109                         case MONITOR  : help_text = Help_monitor; break;
 110                         }
 111                         fputs(help_text,stderr);
 112                         exit(0);
 113
 114                 case 'V':
 115                         fputs(Version, stderr);
 116                         exit(0);
 117
 118                 case 'v': verbose = 1;
 119                         continue;
 120
 121                 case 'b': brief = 1;
 122                         continue;
 123
 124                 case ':':
 125                 case '?':
 126                         fputs(Usage, stderr);
 127                         exit(2);
 128                 }
 129                 /* second, figure out the mode.
 130                  * Some options force the mode.  Others
 131                  * set the mode if it isn't already
 132                  */
 133
 134                 switch(opt) {
 135                 case '@': /* just incase they say --manage */
 136                         newmode = MANAGE; break;
 137                 case 'a':
 138                 case 'r':
 139                 case 'f':
 140                 case 1 : if (!mode) newmode = MANAGE; break;
 141
 142                 case 'A': newmode = ASSEMBLE; break;
 143                 case 'B': newmode = BUILD; break;
 144                 case 'C': newmode = CREATE; break;
 145                 case 'F': newmode = MONITOR;break;
 146
 147                 case '#':
 148                 case 'D':
 149                 case 'E':
 150                 case 'Q': newmode = MISC; break;
 151                 case 'R':
 152                 case 'S':
 153                 case 'o':
 154                 case 'w':
 155                 case 'K': if (!mode) newmode = MISC; break;
 156                 }
 157                 if (mode && newmode == mode) {
 158                         /* everybody happy ! */
 159                 } else if (mode && newmode != mode) {
 160                         /* not allowed.. */
 161                         fprintf(stderr, Name ": ");
 162                         if (option_index >= 0)
 163                                 fprintf(stderr, "--%s", long_options[option_index].name);
 164                         else
 165                                 fprintf(stderr, "-%c", opt);
 166                         fprintf(stderr, " would set mode to %s, but it is already %s.\n",
 167                                 map_num(modes, newmode),
 168                                 map_num(modes, mode));
 169                         exit(2);
 170                 } else if (!mode && newmode) {
 171                         mode = newmode;
 172                 } else {
 173                         /* special case of -c --help */
 174                         if (opt == 'c' &&
 175                             ( strncmp(optarg, "--h", 3)==0 ||
 176                               strncmp(optarg, "-h", 2)==0)) {
 177                                 fputs(Help_config, stderr);
 178                                 exit(0);
 179                         }
 180                         if (option_index >= 0)
 181                                 fprintf(stderr, "--%s", long_options[option_index].name);
 182                         else
 183                                 fprintf(stderr, "-%c", opt);
 184                         fprintf(stderr, " does not set the mode, and so cannot be first.\n");
 185                         exit(2);
 186                 }
 187
 188                 /* if we just set the mode, then done */
 189                 switch(opt) {
 190                 case '@':
 191                 case '#':
 192                 case 'A':
 193                 case 'B':
 194                 case 'C':
 195                 case 'F':
 196                         continue;
 197                 }
 198                 if (opt == 1) {
 199                         /* an undecorated option - must be a device name.
 200                          */
 201                         if (devs_found > 0 && mode == '@' && !devmode) {
 202                                 fprintf(stderr, Name ": Must give on of -a/-r/-f for subsequent devices at %s\n", optarg);
 203                                 exit(2);
 204                         }
 205                         dv = malloc(sizeof(*dv));
 206                         if (dv == NULL) {
 207                                 fprintf(stderr, Name ": malloc failed\n");
 208                                 exit(3);
 209                         }
 210                         dv->devname = optarg;
 211                         dv->disposition = devmode;
 212                         dv->next = NULL;
 213                         *devlistend = dv;
 214                         devlistend = &dv->next;
 215
 216                         devs_found++;
 217                         continue;
 218                 }
 219
 220                 /* We've got a mode, and opt is now something else which
 221                  * could depend on the mode */
 222 #define O(a,b) ((a<<8)|b)
 223                 switch (O(mode,opt)) {
 224                 case O(CREATE,'c'):
 225                 case O(BUILD,'c'): /* chunk or rounding */
 226                         if (chunk) {
 227                                 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
 228                                         "Second value is %s.\n", optarg);
 229                                 exit(2);
 230                         }
 231                         chunk = strtol(optarg, &c, 10);
 232                         if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
 233                                 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
 234                                         optarg);
 235                                 exit(2);
 236                         }
 237                         continue;
 238
 239                 case O(CREATE,'z'): /* size */
 240                         if (size) {
 241                                 fprintf(stderr, Name ": size may only be specified once. "
 242                                         "Second value is %s.\n", optarg);
 243                                 exit(2);
 244                         }
 245                         size = strtol(optarg, &c, 10);
 246                         if (!optarg[0] || *c || size < 4) {
 247                                 fprintf(stderr, Name ": invalid size: %s\n",
 248                                         optarg);
 249                                 exit(2);
 250                         }
 251                         continue;
 252
 253                 case O(CREATE,'l'):
 254                 case O(BUILD,'l'): /* set raid level*/
 255                         if (level != -10) {
 256                                 fprintf(stderr, Name ": raid level may only be set once.  "
 257                                         "Second value is %s.\n", optarg);
 258                                 exit(2);
 259                         }
 260                         level = map_name(pers, optarg);
 261                         if (level == -10) {
 262                                 fprintf(stderr, Name ": invalid raid level: %s\n",
 263                                         optarg);
 264                                 exit(2);
 265                         }
 266                         if (level != 0 && level != -1 && mode == BUILD) {
 267                                 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
 268                                         optarg);
 269                                 exit(2);
 270                         }
 271                         if (sparedisks > 0 && level < 1 && level >= -1) {
 272                                 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
 273                                         optarg);
 274                                 exit(2);
 275                         }
 276                         ident.level = level;
 277                         continue;
 278
 279                 case O(CREATE,'p'): /* raid5 layout */
 280                         if (layout >= 0) {
 281                                 fprintf(stderr,Name ": layout may only be sent once.  "
 282                                         "Second value was %s\n", optarg);
 283                                 exit(2);
 284                         }
 285                         switch(level) {
 286                         default:
 287                                 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
 288                                         map_num(pers, level));
 289                                 exit(2);
 290                         case -10:
 291                                 fprintf(stderr, Name ": raid level must be given before layout.\n");
 292                                 exit(2);
 293
 294                         case 5:
 295                                 layout = map_name(r5layout, optarg);
 296                                 if (layout==-10) {
 297                                         fprintf(stderr, Name ": layout %s not understood for raid5.\n",
 298                                                 optarg);
 299                                         exit(2);
 300                                 }
 301                                 break;
 302                         }
 303                         continue;
 304
 305                 case O(CREATE,'n'):
 306                 case O(BUILD,'n'): /* number of raid disks */
 307                         if (raiddisks) {
 308                                 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
 309                                         raiddisks, optarg);
 310                                 exit(2);
 311                         }
 312                         raiddisks = strtol(optarg, &c, 10);
 313                         if (!optarg[0] || *c || raiddisks<=0 || raiddisks > MD_SB_DISKS) {
 314                                 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
 315                                         optarg);
 316                                 exit(2);
 317                         }
 318                         ident.raid_disks = raiddisks;
 319                         continue;
 320
 321                 case O(CREATE,'x'): /* number of spare (eXtra) discs */
 322                         if (sparedisks) {
 323                                 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
 324                                         sparedisks, optarg);
 325                                 exit(2);
 326                         }
 327                         if (level > -10 && level <= 0 && level >= -1) {
 328                                 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
 329                                         level);
 330                                 exit(2);
 331                         }
 332                         sparedisks = strtol(optarg, &c, 10);
 333                         if (!optarg[0] || *c || sparedisks < 0 || sparedisks > MD_SB_DISKS - raiddisks) {
 334                                 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
 335                                         optarg);
 336                                 exit(2);
 337                         }
 338                         continue;
 339                 case O(CREATE,'f'): /* force honouring of device list */
 340                 case O(ASSEMBLE,'f'): /* force assembly */
 341                 case O(MISC,'f'): /* force zero */
 342                         force=1;
 343                         continue;
 344
 345                         /* now for the Assemble options */
 346                 case O(ASSEMBLE,'u'): /* uuid of array */
 347                         if (ident.uuid_set) {
 348                                 fprintf(stderr, Name ": uuid cannot be set twice.  "
 349                                         "Second value %s.\n", optarg);
 350                                 exit(2);
 351                         }
 352                         if (parse_uuid(optarg, ident.uuid))
 353                                 ident.uuid_set = 1;
 354                         else {
 355                                 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
 356                                 exit(2);
 357                         }
 358                         continue;
 359
 360                 case O(ASSEMBLE,'m'): /* super-minor for array */
 361                         if (ident.super_minor >= 0) {
 362                                 fprintf(stderr, Name ": super-minor cannot be set twice.  "
 363                                         "Second value: %s.\n", optarg);
 364                                 exit(2);
 365                         }
 366                         ident.super_minor = strtoul(optarg, &cp, 10);
 367                         if (!optarg[0] || *cp) {
 368                                 fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
 369                                 exit(2);
 370                         }
 371                         continue;
 372
 373                 case O(ASSEMBLE,'U'): /* update the superblock */
 374                         if (update) {
 375                                 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
 376                                         update, optarg);
 377                                 exit(2);
 378                         }
 379                         update = optarg;
 380                         if (strcmp(update, "sparc2.2")==0) continue;
 381                         if (strcmp(update, "super-minor") == 0)
 382                                 continue;
 383                         fprintf(stderr, Name ": '--update %s' invalid.  Only 'sparc2.2' or 'super-minor' supported\n",update);
 384                         exit(2);
 385
 386                 case O(ASSEMBLE,'c'): /* config file */
 387                 case O(MISC, 'c'):
 388                 case O(MONITOR,'c'):
 389                         if (configfile) {
 390                                 fprintf(stderr, Name ": configfile cannot be set twice.  "
 391                                         "Second value is %s.\n", optarg);
 392                                 exit(2);
 393                         }
 394                         configfile = optarg;
 395                         /* FIXME possibly check that config file exists.  Even parse it */
 396                         continue;
 397                 case O(ASSEMBLE,'s'): /* scan */
 398                 case O(MISC,'s'):
 399                 case O(MONITOR,'s'):
 400                         scan = 1;
 401                         continue;
 402
 403                 case O(MONITOR,'m'): /* mail address */
 404                         if (mailaddr)
 405                                 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
 406                                         optarg);
 407                         else
 408                                 mailaddr = optarg;
 409                         continue;
 410
 411                 case O(MONITOR,'p'): /* alert program */
 412                         if (program)
 413                                 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
 414                                         optarg);
 415                         else
 416                                 program = optarg;
 417                         continue;
 418
 419                 case O(MONITOR,'d'): /* delay in seconds */
 420                         if (delay)
 421                                 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
 422                                         optarg);
 423                         else {
 424                                 delay = strtol(optarg, &c, 10);
 425                                 if (!optarg[0] || *c || delay<1) {
 426                                         fprintf(stderr, Name ": invalid delay: %s\n",
 427                                                 optarg);
 428                                         exit(2);
 429                                 }
 430                         }
 431                         continue;
 432
 433
 434                         /* now the general management options.  Some are applicable
 435                          * to other modes. None have arguments.
 436                          */
 437                 case O(MANAGE,'a'):
 438                 case O(CREATE,'a'):
 439                 case O(BUILD,'a'):
 440                 case O(ASSEMBLE,'a'): /* add a drive */
 441                         devmode = 'a';
 442                         continue;
 443                 case O(MANAGE,'r'): /* remove a drive */
 444                         devmode = 'r';
 445                         continue;
 446                 case O(MANAGE,'f'): /* set faulty */
 447                         devmode = 'f';
 448                         continue;
 449                 case O(MANAGE,'R'):
 450                 case O(ASSEMBLE,'R'):
 451                 case O(BUILD,'R'):
 452                 case O(CREATE,'R'): /* Run the array */
 453                         if (runstop < 0) {
 454                                 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
 455                                 exit(2);
 456                         }
 457                         runstop = 1;
 458                         continue;
 459                 case O(MANAGE,'S'):
 460                         if (runstop > 0) {
 461                                 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
 462                                 exit(2);
 463                         }
 464                         runstop = -1;
 465                         continue;
 466
 467                 case O(MANAGE,'o'):
 468                         if (readonly < 0) {
 469                                 fprintf(stderr, Name ": Cannot have both readonly and readwrite\n");
 470                                 exit(2);
 471                         }
 472                         readonly = 1;
 473                         continue;
 474                 case O(MANAGE,'w'):
 475                         if (readonly > 0) {
 476                                 fprintf(stderr, Name ": Cannot have both readwrite and readonly.\n");
 477                                 exit(2);
 478                         }
 479                         readonly = -1;
 480                         continue;
 481
 482                 case O(MISC,'Q'):
 483                 case O(MISC,'D'):
 484                 case O(MISC,'E'):
 485                 case O(MISC,'K'):
 486                 case O(MISC,'R'):
 487                 case O(MISC,'S'):
 488                 case O(MISC,'o'):
 489                 case O(MISC,'w'):
 490                         if (devmode && devmode != opt &&
 491                             (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
 492                                 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
 493                                         devmode =='E'?opt:devmode);
 494                                 exit(2);
 495                         }
 496                         devmode = opt;
 497                         continue;
 498
 499                 case O(MISC, 22):
 500                         if (devmode != 'E') {
 501                                 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
 502                                 exit(2);
 503                         }
 504                         SparcAdjust = 1;
 505                         continue;
 506                 }
 507                 /* We have now processed all the valid options. Anything else is
 508                  * an error
 509                  */
 510                 fprintf(stderr, Name ": option %c not valid in %s mode\n",
 511                         opt, map_num(modes, mode));
 512                 exit(2);
 513
 514         }
 515
 516         if (!mode) {
 517                 fputs(Usage, stderr);
 518                 exit(2);
 519         }
 520         /* Ok, got the option parsing out of the way
 521          * hopefully it's mostly right but there might be some stuff
 522          * missing
 523          *
 524          * That is mosty checked in the per-mode stuff but...
 525          *
 526          * For @,B,C  and A without -s, the first device listed must be an md device
 527          * we check that here and open it.
 528          */
 529
 530         if (mode==MANAGE || mode == BUILD || mode == CREATE || (mode == ASSEMBLE && ! scan)) {
 531                 if (devs_found < 1) {
 532                         fprintf(stderr, Name ": an md device must be given in this mode\n");
 533                         exit(2);
 534                 }
 535                 mdfd = open_mddev(devlist->devname);
 536                 if (mdfd < 0)
 537                         exit(1);
 538         }
 539
 540         rv = 0;
 541         switch(mode) {
 542         case MANAGE:
 543                 /* readonly, add/remove, readwrite, runstop */
 544                 if (readonly>0)
 545                         rv = Manage_ro(devlist->devname, mdfd, readonly);
 546                 if (!rv && devs_found>1)
 547                         rv = Manage_subdevs(devlist->devname, mdfd,
 548                                             devlist->next);
 549                 if (!rv && readonly < 0)
 550                         rv = Manage_ro(devlist->devname, mdfd, readonly);
 551                 if (!rv && runstop)
 552                         rv = Manage_runstop(devlist->devname, mdfd, runstop);
 553                 break;
 554         case ASSEMBLE:
 555                 if (!scan)
 556                         rv = Assemble(devlist->devname, mdfd, &ident, configfile,
 557                                       devlist->next,
 558                                       readonly, runstop, update, verbose, force);
 559                 else if (devs_found>0) {
 560                         if (update && devs_found > 1) {
 561                                 fprintf(stderr, Name ": can only update a single array at a time\n");
 562                                 exit(1);
 563                         }
 564                         for (dv = devlist ; dv ; dv=dv->next) {
 565                                 mddev_ident_t array_ident = conf_get_ident(configfile, dv->devname);
 566                                 mdfd = open_mddev(dv->devname);
 567                                 if (mdfd < 0) {
 568                                         rv |= 1;
 569                                         continue;
 570                                 }
 571                                 if (array_ident == NULL) {
 572                                         fprintf(stderr, Name ": %s not identified in config file.\n",
 573                                                 dv->devname);
 574                                         rv |= 1;
 575                                         continue;
 576                                 }
 577                                 rv |= Assemble(dv->devname, mdfd, array_ident, configfile,
 578                                                NULL,
 579                                                readonly, runstop, update, verbose, force);
 580                         }
 581                 } else {
 582                         mddev_ident_t array_list =  conf_get_ident(configfile, NULL);
 583                         if (!array_list) {
 584                                 fprintf(stderr, Name ": No arrays found in config file\n");
 585                                 rv = 1;
 586                         } else
 587                                 for (; array_list; array_list = array_list->next) {
 588                                         mdu_array_info_t array;
 589                                         mdfd = open_mddev(array_list->devname);
 590                                         if (mdfd < 0) {
 591                                                 rv |= 1;
 592                                                 continue;
 593                                         }
 594                                         if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0)
 595                                                 /* already assembled, skip */
 596                                                 continue;
 597                                         rv |= Assemble(array_list->devname, mdfd,
 598                                                        array_list, configfile,
 599                                                        NULL,
 600                                                        readonly, runstop, NULL, verbose, force);
 601                                 }
 602                 }
 603                 break;
 604         case BUILD:
 605                 rv = Build(devlist->devname, mdfd, chunk, level, raiddisks, devlist->next);
 606                 break;
 607         case CREATE:
 608                 rv = Create(devlist->devname, mdfd, chunk, level, layout, size,
 609                             raiddisks, sparedisks,
 610                             devs_found-1, devlist->next, runstop, verbose, force);
 611                 break;
 612         case MISC:
 613
 614                 if (devmode == 'E') {
 615                         if (devlist == NULL && !scan) {
 616                                 fprintf(stderr, Name ": No devices to examine\n");
 617                                 exit(2);
 618                         }
 619                         if (devlist == NULL)
 620                                 devlist = conf_get_devs(configfile);
 621                         if (devlist == NULL) {
 622                                 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
 623                                 exit(1);
 624                         }
 625                         rv = Examine(devlist, scan?!verbose:brief, scan, SparcAdjust);
 626                 } else {
 627                         if (devlist == NULL) {
 628                                 if ((devmode == 'S' ||devmode=='D') && scan) {
 629                                         /* apply to all devices in /proc/mdstat */
 630                                         struct mdstat_ent *ms = mdstat_read();
 631                                         struct mdstat_ent *e;
 632                                         for (e=ms ; e ; e=e->next) {
 633                                                 char *name = get_md_name(e->devnum);
 634
 635                                                 if (!name) {
 636                                                         fprintf(stderr, Name ": cannot find device file for %s\n",
 637                                                                 e->dev);
 638                                                         continue;
 639                                                 }
 640                                                 if (devmode == 'D')
 641                                                         rv |= Detail(name, !verbose);
 642                                                 else if (devmode=='S') {
 643                                                         mdfd = open_mddev(name);
 644                                                         if (mdfd >= 0)
 645                                                                 rv |= Manage_runstop(name, mdfd, -1);
 646                                                 }
 647                                                 put_md_name(name);
 648                                         }
 649                                 } else {
 650                                         fprintf(stderr, Name ": No devices given.\n");
 651                                         exit(2);
 652                                 }
 653                         }
 654                         for (dv=devlist ; dv; dv=dv->next) {
 655                                 switch(dv->disposition) {
 656                                 case 'D':
 657                                         rv |= Detail(dv->devname, brief); continue;
 658                                 case 'K': /* Zero superblock */
 659                                         rv |= Kill(dv->devname, force); continue;
 660                                 case 'Q':
 661                                         rv |= Query(dv->devname); continue;
 662                                 }
 663                                 mdfd = open_mddev(dv->devname);
 664                                 if (mdfd>=0)
 665                                         switch(dv->disposition) {
 666                                         case 'R':
 667                                                 rv |= Manage_runstop(dv->devname, mdfd, 1); break;
 668                                         case 'S':
 669                                                 rv |= Manage_runstop(dv->devname, mdfd, -1); break;
 670                                         case 'o':
 671                                                 rv |= Manage_ro(dv->devname, mdfd, 1); break;
 672                                         case 'w':
 673                                                 rv |= Manage_ro(dv->devname, mdfd, -1); break;
 674                                         }
 675                         }
 676                 }
 677                 break;
 678         case MONITOR:
 679 /*
 680                 if (!devlist && !scan) {
 681                         fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
 682                         rv = 1;
 683                         break;
 684                 }
 685 */              rv= Monitor(devlist, mailaddr, program,
 686                             delay?delay:60, scan, configfile);
 687                 break;
 688         }
 689         exit(rv);
 690 }