Detail.c

   1 /*
   2  * mdadm - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2013 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@suse.de>
  23  */
  24
  25 #include        "mdadm.h"
  26 #include        "md_p.h"
  27 #include        "md_u.h"
  28 #include        <dirent.h>
  29
  30 static int cmpstringp(const void *p1, const void *p2)
  31 {
  32         return strcmp(* (char * const *) p1, * (char * const *) p2);
  33 }
  34
  35 static int add_device(const char *dev, char ***p_devices,
  36                       int *p_max_devices, int n_devices)
  37 {
  38         if (n_devices + 1 >= *p_max_devices) {
  39                 *p_max_devices += 16;
  40                 *p_devices = xrealloc(*p_devices, *p_max_devices *
  41                                       sizeof(**p_devices));
  42                 if (!*p_devices) {
  43                         *p_max_devices = 0;
  44                         return 0;
  45                 }
  46         };
  47         (*p_devices)[n_devices] = xstrdup(dev);
  48         return n_devices + 1;
  49 }
  50
  51 int Detail(char *dev, struct context *c)
  52 {
  53         /*
  54          * Print out details for an md array by using
  55          * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
  56          */
  57
  58         int fd = open(dev, O_RDONLY);
  59         int vers;
  60         mdu_array_info_t array;
  61         mdu_disk_info_t *disks;
  62         int next;
  63         int d;
  64         time_t atime;
  65         char *str;
  66         char **devices = NULL;
  67         int max_devices = 0, n_devices = 0;
  68         int spares = 0;
  69         struct stat stb;
  70         int is_26 = get_linux_version() >= 2006000;
  71         int is_rebuilding = 0;
  72         int failed = 0;
  73         struct supertype *st;
  74         char *subarray = NULL;
  75         int max_disks = MD_SB_DISKS; /* just a default */
  76         struct mdinfo *info = NULL;
  77         struct mdinfo *sra;
  78         struct mdinfo *subdev;
  79         char *member = NULL;
  80         char *container = NULL;
  81
  82         int rv = c->test ? 4 : 1;
  83         int avail_disks = 0;
  84         char *avail = NULL;
  85         int external;
  86         int inactive;
  87
  88         if (fd < 0) {
  89                 pr_err("cannot open %s: %s\n",
  90                         dev, strerror(errno));
  91                 return rv;
  92         }
  93         vers = md_get_version(fd);
  94         if (vers < 0) {
  95                 pr_err("%s does not appear to be an md device\n",
  96                         dev);
  97                 close(fd);
  98                 return rv;
  99         }
 100         if (vers < 9000) {
 101                 pr_err("cannot get detail for md device %s: driver version too old.\n",
 102                         dev);
 103                 close(fd);
 104                 return rv;
 105         }
 106         sra = sysfs_read(fd, NULL, GET_VERSION|GET_DEVS);
 107         external = (sra != NULL && sra->array.major_version == -1
 108                     && sra->array.minor_version == -2);
 109         st = super_by_fd(fd, &subarray);
 110         if (ioctl(fd, GET_ARRAY_INFO, &array) == 0) {
 111                 inactive = 0;
 112         } else if (errno == ENODEV && sra) {
 113                 if (sra->array.major_version == -1 &&
 114                     sra->array.minor_version == -1 &&
 115                     sra->devs == NULL) {
 116                         pr_err("Array associated with md device %s does not exist.\n", dev);
 117                         close(fd);
 118                         sysfs_free(sra);
 119                         return rv;
 120                 }
 121                 array = sra->array;
 122                 inactive = 1;
 123         } else {
 124                 pr_err("cannot get array detail for %s: %s\n",
 125                        dev, strerror(errno));
 126                 close(fd);
 127                 return rv;
 128         }
 129
 130         if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
 131                 stb.st_rdev = 0;
 132         rv = 0;
 133
 134         if (st)
 135                 max_disks = st->max_devs;
 136
 137         if (subarray) {
 138                 /* This is a subarray of some container.
 139                  * We want the name of the container, and the member
 140                  */
 141                 dev_t devid = devnm2devid(st->container_devnm);
 142                 int cfd, err;
 143
 144                 member = subarray;
 145                 container = map_dev_preferred(major(devid), minor(devid),
 146                                               1, c->prefer);
 147                 cfd = open_dev(st->container_devnm);
 148                 if (cfd >= 0) {
 149                         err = st->ss->load_container(st, cfd, NULL);
 150                         close(cfd);
 151                         if (err == 0)
 152                                 info = st->ss->container_content(st, subarray);
 153                 }
 154         }
 155
 156         /* try to load a superblock. Try sra->devs first, then try ioctl */
 157         if (st && !info) for (d = 0, subdev = sra ? sra->devs : NULL;
 158                               d < max_disks || subdev;
 159                               subdev ? (void)(subdev = subdev->next) : (void)(d++)){
 160                 mdu_disk_info_t disk;
 161                 char *dv;
 162                 int fd2;
 163                 int err;
 164                 if (subdev)
 165                         disk = subdev->disk;
 166                 else {
 167                         disk.number = d;
 168                         if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
 169                                 continue;
 170                         if (d >= array.raid_disks &&
 171                             disk.major == 0 &&
 172                             disk.minor == 0)
 173                                 continue;
 174                 }
 175
 176                 if (array.raid_disks > 0 &&
 177                     (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
 178                         continue;
 179
 180                 dv = map_dev(disk.major, disk.minor, 1);
 181                 if (!dv)
 182                         continue;
 183
 184                 fd2 = dev_open(dv, O_RDONLY);
 185                 if (fd2 < 0)
 186                         continue;
 187
 188                 if (st->sb)
 189                         st->ss->free_super(st);
 190
 191                 err = st->ss->load_super(st, fd2, NULL);
 192                 close(fd2);
 193                 if (err)
 194                         continue;
 195                 if (info)
 196                         free(info);
 197                 if (subarray)
 198                         info = st->ss->container_content(st, subarray);
 199                 else {
 200                         info = xmalloc(sizeof(*info));
 201                         st->ss->getinfo_super(st, info, NULL);
 202                 }
 203                 if (!info)
 204                         continue;
 205
 206                 if (array.raid_disks != 0 && /* container */
 207                     (info->array.ctime != array.ctime ||
 208                      info->array.level != array.level)) {
 209                         st->ss->free_super(st);
 210                         continue;
 211                 }
 212                 /* some formats (imsm) have free-floating-spares
 213                  * with a uuid of uuid_zero, they don't
 214                  * have very good info about the rest of the
 215                  * container, so keep searching when
 216                  * encountering such a device.  Otherwise, stop
 217                  * after the first successful call to
 218                  * ->load_super.
 219                  */
 220                 if (memcmp(uuid_zero,
 221                            info->uuid,
 222                            sizeof(uuid_zero)) == 0) {
 223                         st->ss->free_super(st);
 224                         continue;
 225                 }
 226                 break;
 227         }
 228
 229         /* Ok, we have some info to print... */
 230         str = map_num(pers, array.level);
 231
 232         if (c->export) {
 233                 if (array.raid_disks) {
 234                         if (str)
 235                                 printf("MD_LEVEL=%s\n", str);
 236                         printf("MD_DEVICES=%d\n", array.raid_disks);
 237                 } else {
 238                         if (!inactive)
 239                                 printf("MD_LEVEL=container\n");
 240                         printf("MD_DEVICES=%d\n", array.nr_disks);
 241                 }
 242                 if (container) {
 243                         printf("MD_CONTAINER=%s\n", container);
 244                         printf("MD_MEMBER=%s\n", member);
 245                 } else {
 246                         if (sra && sra->array.major_version < 0)
 247                                 printf("MD_METADATA=%s\n", sra->text_version);
 248                         else
 249                                 printf("MD_METADATA=%d.%d\n",
 250                                        array.major_version, array.minor_version);
 251                 }
 252
 253                 if (st && st->sb && info) {
 254                         char nbuf[64];
 255                         struct map_ent *mp, *map = NULL;
 256
 257                         fname_from_uuid(st, info, nbuf, ':');
 258                         printf("MD_UUID=%s\n", nbuf+5);
 259                         mp = map_by_uuid(&map, info->uuid);
 260                         if (mp && mp->path &&
 261                             strncmp(mp->path, "/dev/md/", 8) == 0) {
 262                                 printf("MD_DEVNAME=");
 263                                 print_escape(mp->path+8);
 264                                 putchar('\n');
 265                         }
 266
 267                         if (st->ss->export_detail_super)
 268                                 st->ss->export_detail_super(st);
 269                 } else {
 270                         struct map_ent *mp, *map = NULL;
 271                         char nbuf[64];
 272                         mp = map_by_devnm(&map, fd2devnm(fd));
 273                         if (mp) {
 274                                 __fname_from_uuid(mp->uuid, 0, nbuf, ':');
 275                                 printf("MD_UUID=%s\n", nbuf+5);
 276                         }
 277                         if (mp && mp->path &&
 278                             strncmp(mp->path, "/dev/md/", 8) == 0) {
 279                                 printf("MD_DEVNAME=");
 280                                 print_escape(mp->path+8);
 281                                 putchar('\n');
 282                         }
 283                 }
 284                 if (sra) {
 285                         struct mdinfo *mdi;
 286                         for (mdi  = sra->devs; mdi; mdi = mdi->next) {
 287                                 char *path =
 288                                         map_dev(mdi->disk.major,
 289                                                 mdi->disk.minor, 0);
 290
 291                                 if (mdi->disk.raid_disk >= 0)
 292                                         printf("MD_DEVICE_%s_ROLE=%d\n",
 293                                                mdi->sys_name+4,
 294                                                mdi->disk.raid_disk);
 295                                 else
 296                                         printf("MD_DEVICE_%s_ROLE=spare\n",
 297                                                mdi->sys_name+4);
 298                                 if (path)
 299                                         printf("MD_DEVICE_%s_DEV=%s\n",
 300                                                mdi->sys_name+4, path);
 301                         }
 302                 }
 303                 goto out;
 304         }
 305
 306         disks = xmalloc(max_disks * 2 * sizeof(mdu_disk_info_t));
 307         for (d = 0; d < max_disks * 2; d++) {
 308                 disks[d].state = (1<<MD_DISK_REMOVED);
 309                 disks[d].major = disks[d].minor = 0;
 310                 disks[d].number = -1;
 311                 disks[d].raid_disk = d/2;
 312         }
 313
 314         next = array.raid_disks*2;
 315         if (inactive) {
 316                 struct mdinfo *mdi;
 317                 if (sra != NULL)
 318                         for (mdi = sra->devs; mdi; mdi = mdi->next) {
 319                                 disks[next++] = mdi->disk;
 320                                 disks[next-1].number = -1;
 321                         }
 322         } else for (d = 0; d < max_disks; d++) {
 323                 mdu_disk_info_t disk;
 324                 disk.number = d;
 325                 if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
 326                         if (d < array.raid_disks)
 327                                 pr_err("cannot get device detail for device %d: %s\n",
 328                                         d, strerror(errno));
 329                         continue;
 330                 }
 331                 if (disk.major == 0 && disk.minor == 0)
 332                         continue;
 333                 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks
 334                     && disks[disk.raid_disk*2].state == (1<<MD_DISK_REMOVED)
 335                     && ((disk.state & (1<<MD_DISK_JOURNAL)) == 0))
 336                         disks[disk.raid_disk*2] = disk;
 337                 else if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks
 338                          && disks[disk.raid_disk*2+1].state == (1<<MD_DISK_REMOVED)
 339                          && !(disk.state & (1<<MD_DISK_JOURNAL)))
 340                         disks[disk.raid_disk*2+1] = disk;
 341                 else if (next < max_disks*2)
 342                         disks[next++] = disk;
 343         }
 344
 345         avail = xcalloc(array.raid_disks, 1);
 346
 347         for (d= 0; d < array.raid_disks; d++) {
 348
 349                 if ((disks[d*2].state & (1<<MD_DISK_SYNC)) ||
 350                     (disks[d*2+1].state & (1<<MD_DISK_SYNC))) {
 351                         avail_disks ++;
 352                         avail[d] = 1;
 353                 } else
 354                         rv |= !! c->test;
 355         }
 356
 357         if (c->brief) {
 358                 mdu_bitmap_file_t bmf;
 359                 printf("%sARRAY %s", inactive ? "INACTIVE-":"", dev);
 360                 if (c->verbose > 0) {
 361                         if (array.raid_disks)
 362                                 printf(" level=%s num-devices=%d",
 363                                        str?str:"-unknown-",
 364                                        array.raid_disks );
 365                         else if (!inactive)
 366                                 printf(" level=container num-devices=%d",
 367                                        array.nr_disks);
 368                         else
 369                                 printf(" num-devices=%d", array.nr_disks);
 370                 }
 371                 if (container) {
 372                         printf(" container=%s", container);
 373                         printf(" member=%s", member);
 374                 } else {
 375                         if (sra && sra->array.major_version < 0)
 376                                 printf(" metadata=%s", sra->text_version);
 377                         else
 378                                 printf(" metadata=%d.%d",
 379                                        array.major_version, array.minor_version);
 380                 }
 381
 382                 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
 383                 if (vers >= 9001 &&
 384                     ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
 385                     bmf.pathname[0]) {
 386                         printf(" bitmap=%s", bmf.pathname);
 387                 }
 388         } else {
 389                 mdu_bitmap_file_t bmf;
 390                 unsigned long long larray_size;
 391                 struct mdstat_ent *ms = mdstat_read(0, 0);
 392                 struct mdstat_ent *e;
 393                 char *devnm;
 394
 395                 devnm = stat2devnm(&stb);
 396                 for (e=ms; e; e=e->next)
 397                         if (strcmp(e->devnm, devnm) == 0)
 398                                 break;
 399                 if (!get_dev_size(fd, NULL, &larray_size))
 400                         larray_size = 0;
 401
 402                 printf("%s:\n", dev);
 403
 404                 if (container)
 405                         printf("      Container : %s, member %s\n", container, member);
 406                 else {
 407                 if (sra && sra->array.major_version < 0)
 408                         printf("        Version : %s\n", sra->text_version);
 409                 else
 410                         printf("        Version : %d.%d\n",
 411                                array.major_version, array.minor_version);
 412                 }
 413
 414                 atime = array.ctime;
 415                 if (atime)
 416                         printf("  Creation Time : %.24s\n", ctime(&atime));
 417                 if (array.raid_disks == 0 && external)
 418                         str = "container";
 419                 if (str)
 420                         printf("     Raid Level : %s\n", str);
 421                 if (larray_size)
 422                         printf("     Array Size : %llu%s\n", (larray_size>>10),
 423                                human_size(larray_size));
 424                 if (array.level >= 1) {
 425                         if (sra)
 426                                 array.major_version = sra->array.major_version;
 427                         if (array.major_version != 0 &&
 428                             (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
 429                                 unsigned long long dsize = get_component_size(fd);
 430                                 if (dsize > 0)
 431                                         printf("  Used Dev Size : %llu%s\n",
 432                                                dsize/2,
 433                                          human_size((long long)dsize<<9));
 434                                 else
 435                                         printf("  Used Dev Size : unknown\n");
 436                         } else
 437                                 printf("  Used Dev Size : %lu%s\n",
 438                                        (unsigned long)array.size,
 439                                        human_size((unsigned long long)array.size<<10));
 440                 }
 441                 if (array.raid_disks)
 442                         printf("   Raid Devices : %d\n", array.raid_disks);
 443                 printf("  Total Devices : %d\n", array.nr_disks);
 444                 if (!container &&
 445                     ((sra == NULL && array.major_version == 0) ||
 446                      (sra && sra->array.major_version == 0)))
 447                         printf("Preferred Minor : %d\n", array.md_minor);
 448                 if (sra == NULL || sra->array.major_version >= 0)
 449                         printf("    Persistence : Superblock is %spersistent\n",
 450                                array.not_persistent?"not ":"");
 451                 printf("\n");
 452                 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
 453                 if (vers >= 9001 &&
 454                     ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
 455                     bmf.pathname[0]) {
 456                         printf("  Intent Bitmap : %s\n", bmf.pathname);
 457                         printf("\n");
 458                 } else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
 459                         printf("  Intent Bitmap : Internal\n\n");
 460                 atime = array.utime;
 461                 if (atime)
 462                         printf("    Update Time : %.24s\n", ctime(&atime));
 463                 if (array.raid_disks) {
 464                         static char *sync_action[] = {
 465                                 ", recovering",  ", resyncing",
 466                                 ", reshaping",   ", checking"  };
 467                         char *st;
 468                         if (avail_disks == array.raid_disks)
 469                                 st = "";
 470                         else if (!enough(array.level, array.raid_disks,
 471                                          array.layout, 1, avail))
 472                                 st = ", FAILED";
 473                         else
 474                                 st = ", degraded";
 475
 476                         printf("          State : %s%s%s%s%s%s \n",
 477                                (array.state&(1<<MD_SB_CLEAN))?"clean":"active", st,
 478                                (!e || (e->percent < 0 && e->percent != RESYNC_PENDING &&
 479                                e->percent != RESYNC_DELAYED)) ? "" : sync_action[e->resync],
 480                                larray_size ? "": ", Not Started",
 481                                (e && e->percent == RESYNC_DELAYED) ? " (DELAYED)": "",
 482                                (e && e->percent == RESYNC_PENDING) ? " (PENDING)": "");
 483                 } else if (inactive) {
 484                         printf("          State : inactive\n");
 485                 }
 486                 if (array.raid_disks)
 487                         printf(" Active Devices : %d\n", array.active_disks);
 488                 if (array.working_disks > 0)
 489                         printf("Working Devices : %d\n", array.working_disks);
 490                 if (array.raid_disks) {
 491                         printf(" Failed Devices : %d\n", array.failed_disks);
 492                         printf("  Spare Devices : %d\n", array.spare_disks);
 493                 }
 494                 printf("\n");
 495                 if (array.level == 5) {
 496                         str = map_num(r5layout, array.layout);
 497                         printf("         Layout : %s\n", str?str:"-unknown-");
 498                 }
 499                 if (array.level == 6) {
 500                         str = map_num(r6layout, array.layout);
 501                         printf("         Layout : %s\n", str?str:"-unknown-");
 502                 }
 503                 if (array.level == 10) {
 504                         printf("         Layout :");
 505                         print_r10_layout(array.layout);
 506                         printf("\n");
 507                 }
 508                 switch (array.level) {
 509                 case 0:
 510                 case 4:
 511                 case 5:
 512                 case 10:
 513                 case 6:
 514                         if (array.chunk_size)
 515                                 printf("     Chunk Size : %dK\n\n",
 516                                        array.chunk_size/1024);
 517                         break;
 518                 case -1:
 519                         printf("       Rounding : %dK\n\n", array.chunk_size/1024);
 520                         break;
 521                 default: break;
 522                 }
 523
 524                 if (e && e->percent >= 0) {
 525                         static char *sync_action[] = {
 526                                 "Rebuild", "Resync",
 527                                 "Reshape", "Check"};
 528                         printf(" %7s Status : %d%% complete\n", sync_action[e->resync], e->percent);
 529                         is_rebuilding = 1;
 530                 }
 531                 free_mdstat(ms);
 532
 533                 if ((st && st->sb) && (info && info->reshape_active)) {
 534 #if 0
 535 This is pretty boring
 536                         printf("  Reshape pos'n : %llu%s\n", (unsigned long long) info->reshape_progress<<9,
 537                                human_size((unsigned long long)info->reshape_progress<<9));
 538 #endif
 539                         if (info->delta_disks != 0)
 540                                 printf("  Delta Devices : %d, (%d->%d)\n",
 541                                        info->delta_disks,
 542                                        array.raid_disks - info->delta_disks,
 543                                        array.raid_disks);
 544                         if (info->new_level != array.level) {
 545                                 str = map_num(pers, info->new_level);
 546                                 printf("      New Level : %s\n", str?str:"-unknown-");
 547                         }
 548                         if (info->new_level != array.level ||
 549                             info->new_layout != array.layout) {
 550                                 if (info->new_level == 5) {
 551                                         str = map_num(r5layout, info->new_layout);
 552                                         printf("     New Layout : %s\n",
 553                                                str?str:"-unknown-");
 554                                 }
 555                                 if (info->new_level == 6) {
 556                                         str = map_num(r6layout, info->new_layout);
 557                                         printf("     New Layout : %s\n",
 558                                                str?str:"-unknown-");
 559                                 }
 560                                 if (info->new_level == 10) {
 561                                         printf("     New Layout : near=%d, %s=%d\n",
 562                                                info->new_layout&255,
 563                                                (info->new_layout&0x10000)?"offset":"far",
 564                                                (info->new_layout>>8)&255);
 565                                 }
 566                         }
 567                         if (info->new_chunk != array.chunk_size)
 568                                 printf("  New Chunksize : %dK\n", info->new_chunk/1024);
 569                         printf("\n");
 570                 } else if (e && e->percent >= 0)
 571                         printf("\n");
 572                 if (st && st->sb)
 573                         st->ss->detail_super(st, c->homehost);
 574
 575                 if (array.raid_disks == 0 && sra && sra->array.major_version == -1
 576                     && sra->array.minor_version == -2 && sra->text_version[0] != '/') {
 577                         /* This looks like a container.  Find any active arrays
 578                          * That claim to be a member.
 579                          */
 580                         DIR *dir = opendir("/sys/block");
 581                         struct dirent *de;
 582
 583                         printf("  Member Arrays :");
 584
 585                         while (dir && (de = readdir(dir)) != NULL) {
 586                                 char path[287];
 587                                 char vbuf[1024];
 588                                 int nlen = strlen(sra->sys_name);
 589                                 dev_t devid;
 590                                 if (de->d_name[0] == '.')
 591                                         continue;
 592                                 sprintf(path, "/sys/block/%s/md/metadata_version",
 593                                         de->d_name);
 594                                 if (load_sys(path, vbuf, sizeof(vbuf)) < 0)
 595                                         continue;
 596                                 if (strncmp(vbuf, "external:", 9) != 0 ||
 597                                     !is_subarray(vbuf+9) ||
 598                                     strncmp(vbuf+10, sra->sys_name, nlen) != 0 ||
 599                                     vbuf[10+nlen] != '/')
 600                                         continue;
 601                                 devid = devnm2devid(de->d_name);
 602                                 printf(" %s", map_dev_preferred(
 603                                                major(devid),
 604                                                minor(devid), 1, c->prefer));
 605                         }
 606                         if (dir)
 607                                 closedir(dir);
 608                         printf("\n\n");
 609                 }
 610
 611                 if (array.raid_disks)
 612                         printf("    Number   Major   Minor   RaidDevice State\n");
 613                 else
 614                         printf("    Number   Major   Minor   RaidDevice\n");
 615         }
 616         free(info);
 617
 618         for (d= 0; d < max_disks * 2; d++) {
 619                 char *dv;
 620                 mdu_disk_info_t disk = disks[d];
 621
 622                 if (d >= array.raid_disks*2 &&
 623                     disk.major == 0 &&
 624                     disk.minor == 0)
 625                         continue;
 626                 if ((d & 1) &&
 627                     disk.major == 0 &&
 628                     disk.minor == 0)
 629                         continue;
 630                 if (!c->brief) {
 631                         if (d == array.raid_disks*2) printf("\n");
 632                         if (disk.number < 0 && disk.raid_disk < 0)
 633                                 printf("       -   %5d    %5d        -     ",
 634                                        disk.major, disk.minor);
 635                         else if (disk.raid_disk < 0 || disk.state & (1<<MD_DISK_JOURNAL))
 636                                 printf("   %5d   %5d    %5d        -     ",
 637                                        disk.number, disk.major, disk.minor);
 638                         else if (disk.number < 0)
 639                                 printf("       -   %5d    %5d    %5d     ",
 640                                        disk.major, disk.minor, disk.raid_disk);
 641                         else
 642                                 printf("   %5d   %5d    %5d    %5d     ",
 643                                        disk.number, disk.major, disk.minor, disk.raid_disk);
 644                 }
 645                 if (!c->brief && array.raid_disks) {
 646
 647                         if (disk.state & (1<<MD_DISK_FAULTY)) {
 648                                 printf(" faulty");
 649                                 if (disk.raid_disk < array.raid_disks &&
 650                                     disk.raid_disk >= 0)
 651                                         failed++;
 652                         }
 653                         if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
 654                         if (disk.state & (1<<MD_DISK_SYNC)) {
 655                                 printf(" sync");
 656                                 if (array.level == 10 && (array.layout & ~0x1FFFF) == 0) {
 657                                         int nc = array.layout & 0xff;
 658                                         int fc = (array.layout >> 8) & 0xff;
 659                                         int copies = nc*fc;
 660                                         if (fc == 1 && array.raid_disks % copies == 0 && copies <= 26) {
 661                                                 /* We can divide the devices into 'sets' */
 662                                                 int set = disk.raid_disk % copies;
 663                                                 printf(" set-%c", set + 'A');
 664                                         }
 665                                 }
 666                         }
 667                         if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
 668                         if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
 669                         if (disk.state & (1<<MD_DISK_FAILFAST)) printf(" failfast");
 670                         if (disk.state & (1<<MD_DISK_JOURNAL)) printf(" journal");
 671                         if ((disk.state &
 672                              ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)
 673                               |(1<<MD_DISK_REMOVED)|(1<<MD_DISK_FAULTY)|(1<<MD_DISK_JOURNAL)))
 674                             == 0) {
 675                                 printf(" spare");
 676                                 if (is_26) {
 677                                         if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
 678                                                 printf(" rebuilding");
 679                                 } else if (is_rebuilding && failed) {
 680                                         /* Taking a bit of a risk here, we remove the
 681                                          * device from the array, and then put it back.
 682                                          * If this fails, we are rebuilding
 683                                          */
 684                                         int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
 685                                         if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
 686                                         if (err && errno ==  EBUSY)
 687                                                 printf(" rebuilding");
 688                                 }
 689                         }
 690                 }
 691                 if (disk.state == 0) spares++;
 692                 dv=map_dev_preferred(disk.major, disk.minor, 0, c->prefer);
 693                 if (dv != NULL) {
 694                         if (c->brief)
 695                                 n_devices = add_device(dv, &devices,
 696                                                        &max_devices,
 697                                                        n_devices);
 698                         else
 699                                 printf("   %s", dv);
 700                 }
 701                 if (!c->brief) printf("\n");
 702         }
 703         if (spares && c->brief && array.raid_disks) printf(" spares=%d", spares);
 704         if (c->brief && st && st->sb)
 705                 st->ss->brief_detail_super(st);
 706         if (st)
 707                 st->ss->free_super(st);
 708
 709         if (c->brief && c->verbose > 0 && devices) {
 710                 qsort(devices, n_devices, sizeof(*devices), cmpstringp);
 711                 printf("\n   devices=%s", devices[0]);
 712                 for (d = 1; d < n_devices; d++)
 713                         printf(",%s", devices[d]);
 714         }
 715         if (c->brief)
 716                 printf("\n");
 717         if (c->test &&
 718             !enough(array.level, array.raid_disks, array.layout,
 719                     1, avail))
 720                 rv = 2;
 721
 722         free(disks);
 723 out:
 724         close(fd);
 725         free(subarray);
 726         free(avail);
 727         for (d = 0; d < n_devices; d++)
 728                 free(devices[d]);
 729         free(devices);
 730         sysfs_free(sra);
 731         return rv;
 732 }
 733
 734 int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path)
 735 {
 736         /* display platform capabilities for the given metadata format
 737          * 'scan' in this context means iterate over all metadata types
 738          */
 739         int i;
 740         int err = 1;
 741
 742         if (ss && export && ss->export_detail_platform)
 743                 err = ss->export_detail_platform(verbose, controller_path);
 744         else if (ss && ss->detail_platform)
 745                 err = ss->detail_platform(verbose, 0, controller_path);
 746         else if (ss) {
 747                 if (verbose > 0)
 748                         pr_err("%s metadata is platform independent\n",
 749                                 ss->name ? : "[no name]");
 750         } else if (!scan) {
 751                 if (verbose > 0)
 752                         pr_err("specify a metadata type or --scan\n");
 753         }
 754
 755         if (!scan)
 756                 return err;
 757
 758         err = 0;
 759         for (i = 0; superlist[i]; i++) {
 760                 struct superswitch *meta = superlist[i];
 761
 762                 if (meta == ss)
 763                         continue;
 764                 if (verbose > 0)
 765                         pr_err("checking metadata %s\n",
 766                                 meta->name ? : "[no name]");
 767                 if (!meta->detail_platform) {
 768                         if (verbose > 0)
 769                                 pr_err("%s metadata is platform independent\n",
 770                                         meta->name ? : "[no name]");
 771                 } else if (export && meta->export_detail_platform) {
 772                         err |= meta->export_detail_platform(verbose, controller_path);
 773                 } else
 774                         err |= meta->detail_platform(verbose, 0, controller_path);
 775         }
 776
 777         return err;
 778 }