Detail.c

   1 /*
   2  * mdadm - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2012 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 int Detail(char *dev, struct context *c)
  31 {
  32         /*
  33          * Print out details for an md array by using
  34          * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
  35          */
  36
  37         int fd = open(dev, O_RDONLY);
  38         int vers;
  39         mdu_array_info_t array;
  40         mdu_disk_info_t *disks;
  41         int next;
  42         int d;
  43         time_t atime;
  44         char *str;
  45         char *devices = NULL;
  46         int spares = 0;
  47         struct stat stb;
  48         int is_26 = get_linux_version() >= 2006000;
  49         int is_rebuilding = 0;
  50         int failed = 0;
  51         struct supertype *st;
  52         char *subarray = NULL;
  53         int max_disks = MD_SB_DISKS; /* just a default */
  54         struct mdinfo *info = NULL;
  55         struct mdinfo *sra;
  56         char *member = NULL;
  57         char *container = NULL;
  58
  59         int rv = c->test ? 4 : 1;
  60         int avail_disks = 0;
  61         char *avail = NULL;
  62
  63         if (fd < 0) {
  64                 pr_err("cannot open %s: %s\n",
  65                         dev, strerror(errno));
  66                 return rv;
  67         }
  68         vers = md_get_version(fd);
  69         if (vers < 0) {
  70                 pr_err("%s does not appear to be an md device\n",
  71                         dev);
  72                 close(fd);
  73                 return rv;
  74         }
  75         if (vers < 9000) {
  76                 pr_err("cannot get detail for md device %s: driver version too old.\n",
  77                         dev);
  78                 close(fd);
  79                 return rv;
  80         }
  81         if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
  82                 if (errno == ENODEV)
  83                         pr_err("md device %s does not appear to be active.\n",
  84                                 dev);
  85                 else
  86                         pr_err("cannot get array detail for %s: %s\n",
  87                                 dev, strerror(errno));
  88                 close(fd);
  89                 return rv;
  90         }
  91         sra = sysfs_read(fd, NULL, GET_VERSION);
  92         st = super_by_fd(fd, &subarray);
  93
  94         if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
  95                 stb.st_rdev = 0;
  96         rv = 0;
  97
  98         if (st)
  99                 max_disks = st->max_devs;
 100
 101         if (subarray) {
 102                 /* This is a subarray of some container.
 103                  * We want the name of the container, and the member
 104                  */
 105                 int devid = devnm2devid(st->container_devnm);
 106                 int cfd, err;
 107
 108                 member = subarray;
 109                 container = map_dev_preferred(major(devid), minor(devid),
 110                                               1, c->prefer);
 111                 cfd = open_dev(st->container_devnm);
 112                 if (cfd >= 0) {
 113                         err = st->ss->load_container(st, cfd, NULL);
 114                         close(cfd);
 115                         if (err == 0)
 116                                 info = st->ss->container_content(st, subarray);
 117                 }
 118         }
 119
 120         /* try to load a superblock */
 121         if (st && !info) for (d = 0; d < max_disks; d++) {
 122                 mdu_disk_info_t disk;
 123                 char *dv;
 124                 int fd2;
 125                 int err;
 126                 disk.number = d;
 127                 if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
 128                         continue;
 129                 if (d >= array.raid_disks &&
 130                     disk.major == 0 &&
 131                     disk.minor == 0)
 132                         continue;
 133
 134                 if (array.raid_disks > 0 &&
 135                     (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
 136                         continue;
 137
 138                 dv = map_dev(disk.major, disk.minor, 1);
 139                 if (!dv)
 140                         continue;
 141
 142                 fd2 = dev_open(dv, O_RDONLY);
 143                 if (fd2 < 0)
 144                         continue;
 145
 146                 if (st->sb)
 147                         st->ss->free_super(st);
 148
 149                 err = st->ss->load_super(st, fd2, NULL);
 150                 close(fd2);
 151                 if (err)
 152                         continue;
 153                 if (info)
 154                         free(info);
 155                 if (subarray)
 156                         info = st->ss->container_content(st, subarray);
 157                 else {
 158                         info = xmalloc(sizeof(*info));
 159                         st->ss->getinfo_super(st, info, NULL);
 160                 }
 161                 if (!info)
 162                         continue;
 163
 164                 if (array.raid_disks != 0 && /* container */
 165                     (info->array.ctime != array.ctime ||
 166                      info->array.level != array.level)) {
 167                         st->ss->free_super(st);
 168                         continue;
 169                 }
 170                 /* some formats (imsm) have free-floating-spares
 171                  * with a uuid of uuid_zero, they don't
 172                  * have very good info about the rest of the
 173                  * container, so keep searching when
 174                  * encountering such a device.  Otherwise, stop
 175                  * after the first successful call to
 176                  * ->load_super.
 177                  */
 178                 if (memcmp(uuid_zero,
 179                            info->uuid,
 180                            sizeof(uuid_zero)) == 0) {
 181                         st->ss->free_super(st);
 182                         continue;
 183                 }
 184                 break;
 185         }
 186
 187         /* Ok, we have some info to print... */
 188         str = map_num(pers, array.level);
 189
 190         if (c->export) {
 191                 if (array.raid_disks) {
 192                         if (str)
 193                                 printf("MD_LEVEL=%s\n", str);
 194                         printf("MD_DEVICES=%d\n", array.raid_disks);
 195                 } else {
 196                         printf("MD_LEVEL=container\n");
 197                         printf("MD_DEVICES=%d\n", array.nr_disks);
 198                 }
 199                 if (container) {
 200                         printf("MD_CONTAINER=%s\n", container);
 201                         printf("MD_MEMBER=%s\n", member);
 202                 } else {
 203                         if (sra && sra->array.major_version < 0)
 204                                 printf("MD_METADATA=%s\n", sra->text_version);
 205                         else
 206                                 printf("MD_METADATA=%d.%d\n",
 207                                        array.major_version, array.minor_version);
 208                 }
 209
 210                 if (st && st->sb && info) {
 211                         char nbuf[64];
 212                         struct map_ent *mp, *map = NULL;
 213
 214                         fname_from_uuid(st, info, nbuf, ':');
 215                         printf("MD_UUID=%s\n", nbuf+5);
 216                         mp = map_by_uuid(&map, info->uuid);
 217                         if (mp && mp->path &&
 218                             strncmp(mp->path, "/dev/md/", 8) == 0) {
 219                                 printf("MD_DEVNAME=");
 220                                 print_escape(mp->path+8);
 221                                 putchar('\n');
 222                         }
 223
 224                         if (st->ss->export_detail_super)
 225                                 st->ss->export_detail_super(st);
 226                 } else {
 227                         struct map_ent *mp, *map = NULL;
 228                         char nbuf[64];
 229                         mp = map_by_devnm(&map, fd2devnm(fd));
 230                         if (mp) {
 231                                 __fname_from_uuid(mp->uuid, 0, nbuf, ':');
 232                                 printf("MD_UUID=%s\n", nbuf+5);
 233                         }
 234                         if (mp && mp->path &&
 235                             strncmp(mp->path, "/dev/md/", 8) == 0) {
 236                                 printf("MD_DEVNAME=");
 237                                 print_escape(mp->path+8);
 238                                 putchar('\n');
 239                         }
 240                 }
 241                 goto out;
 242         }
 243
 244         disks = xmalloc(max_disks * sizeof(mdu_disk_info_t));
 245         for (d = 0; d < max_disks; d++) {
 246                 disks[d].state = (1<<MD_DISK_REMOVED);
 247                 disks[d].major = disks[d].minor = 0;
 248                 disks[d].number = disks[d].raid_disk = d;
 249         }
 250
 251         next = array.raid_disks*2;
 252         for (d = 0; d < max_disks; d++) {
 253                 mdu_disk_info_t disk;
 254                 disk.number = d;
 255                 if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
 256                         if (d < array.raid_disks)
 257                                 pr_err("cannot get device detail for device %d: %s\n",
 258                                         d, strerror(errno));
 259                         continue;
 260                 }
 261                 if (disk.major == 0 && disk.minor == 0)
 262                         continue;
 263                 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks
 264                     && disks[disk.raid_disk*2].state == (1<<MD_DISK_REMOVED))
 265                         disks[disk.raid_disk*2] = disk;
 266                 else if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks
 267                          && disks[disk.raid_disk*2+1].state == (1<<MD_DISK_REMOVED))
 268                         disks[disk.raid_disk*2+1] = disk;
 269                 else if (next < max_disks)
 270                         disks[next++] = disk;
 271         }
 272
 273         avail = xcalloc(array.raid_disks, 1);
 274
 275         for (d= 0; d < array.raid_disks; d++) {
 276
 277                 if ((disks[d*2].state & (1<<MD_DISK_SYNC)) ||
 278                     (disks[d*2+1].state & (1<<MD_DISK_SYNC))) {
 279                         avail_disks ++;
 280                         avail[d] = 1;
 281                 }
 282         }
 283
 284         if (c->brief) {
 285                 mdu_bitmap_file_t bmf;
 286                 printf("ARRAY %s", dev);
 287                 if (c->brief > 1) {
 288                         if (array.raid_disks)
 289                                 printf(" level=%s num-devices=%d",
 290                                        str?str:"-unknown-",
 291                                        array.raid_disks );
 292                         else
 293                                 printf(" level=container num-devices=%d",
 294                                        array.nr_disks);
 295                 }
 296                 if (container) {
 297                         printf(" container=%s", container);
 298                         printf(" member=%s", member);
 299                 } else {
 300                         if (sra && sra->array.major_version < 0)
 301                                 printf(" metadata=%s", sra->text_version);
 302                         else
 303                                 printf(" metadata=%d.%d",
 304                                        array.major_version, array.minor_version);
 305                 }
 306
 307                 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
 308                 if (vers >= 9001 &&
 309                     ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
 310                     bmf.pathname[0]) {
 311                         printf(" bitmap=%s", bmf.pathname);
 312                 }
 313         } else {
 314                 mdu_bitmap_file_t bmf;
 315                 unsigned long long larray_size;
 316                 struct mdstat_ent *ms = mdstat_read(0, 0);
 317                 struct mdstat_ent *e;
 318                 char *devnm;
 319
 320                 devnm = stat2devnm(&stb);
 321                 for (e=ms; e; e=e->next)
 322                         if (strcmp(e->devnm, devnm) == 0)
 323                                 break;
 324                 if (!get_dev_size(fd, NULL, &larray_size))
 325                         larray_size = 0;
 326
 327                 printf("%s:\n", dev);
 328
 329                 if (container)
 330                         printf("      Container : %s, member %s\n", container, member);
 331                 else {
 332                 if (sra && sra->array.major_version < 0)
 333                         printf("        Version : %s\n", sra->text_version);
 334                 else
 335                         printf("        Version : %d.%d\n",
 336                                array.major_version, array.minor_version);
 337                 }
 338
 339                 atime = array.ctime;
 340                 if (atime)
 341                         printf("  Creation Time : %.24s\n", ctime(&atime));
 342                 if (array.raid_disks == 0)
 343                         str = "container";
 344                 printf("     Raid Level : %s\n", str?str:"-unknown-");
 345                 if (larray_size)
 346                         printf("     Array Size : %llu%s\n", (larray_size>>10),
 347                                human_size(larray_size));
 348                 if (array.level >= 1) {
 349                         if (sra)
 350                                 array.major_version = sra->array.major_version;
 351                         if (array.major_version != 0 &&
 352                             (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
 353                                 unsigned long long dsize = get_component_size(fd);
 354                                 if (dsize > 0)
 355                                         printf("  Used Dev Size : %llu%s\n",
 356                                                dsize/2,
 357                                          human_size((long long)dsize<<9));
 358                                 else
 359                                         printf("  Used Dev Size : unknown\n");
 360                         } else
 361                                 printf("  Used Dev Size : %d%s\n", array.size,
 362                                        human_size((long long)array.size<<10));
 363                 }
 364                 if (array.raid_disks)
 365                         printf("   Raid Devices : %d\n", array.raid_disks);
 366                 printf("  Total Devices : %d\n", array.nr_disks);
 367                 if (!container &&
 368                     ((sra == NULL && array.major_version == 0) ||
 369                      (sra && sra->array.major_version == 0)))
 370                         printf("Preferred Minor : %d\n", array.md_minor);
 371                 if (sra == NULL || sra->array.major_version >= 0)
 372                         printf("    Persistence : Superblock is %spersistent\n",
 373                                array.not_persistent?"not ":"");
 374                 printf("\n");
 375                 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
 376                 if (vers >= 9001 &&
 377                     ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
 378                     bmf.pathname[0]) {
 379                         printf("  Intent Bitmap : %s\n", bmf.pathname);
 380                         printf("\n");
 381                 } else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
 382                         printf("  Intent Bitmap : Internal\n\n");
 383                 atime = array.utime;
 384                 if (atime)
 385                         printf("    Update Time : %.24s\n", ctime(&atime));
 386                 if (array.raid_disks) {
 387                         static char *sync_action[] = {
 388                                 ", recovering",  ", resyncing",
 389                                 ", reshaping",   ", checking"  };
 390                         char *st;
 391                         if (avail_disks == array.raid_disks)
 392                                 st = "";
 393                         else if (!enough(array.level, array.raid_disks,
 394                                          array.layout, 1, avail))
 395                                 st = ", FAILED";
 396                         else
 397                                 st = ", degraded";
 398
 399                         printf("          State : %s%s%s%s%s%s \n",
 400                                (array.state&(1<<MD_SB_CLEAN))?"clean":"active", st,
 401                                (!e || (e->percent < 0 && e->percent != RESYNC_PENDING &&
 402                                e->percent != RESYNC_DELAYED)) ? "" : sync_action[e->resync],
 403                                larray_size ? "": ", Not Started",
 404                                e->percent == RESYNC_DELAYED ? " (DELAYED)": "",
 405                                e->percent == RESYNC_PENDING ? " (PENDING)": "");
 406                 }
 407                 if (array.raid_disks)
 408                         printf(" Active Devices : %d\n", array.active_disks);
 409                 printf("Working Devices : %d\n", array.working_disks);
 410                 if (array.raid_disks) {
 411                         printf(" Failed Devices : %d\n", array.failed_disks);
 412                         printf("  Spare Devices : %d\n", array.spare_disks);
 413                 }
 414                 printf("\n");
 415                 if (array.level == 5) {
 416                         str = map_num(r5layout, array.layout);
 417                         printf("         Layout : %s\n", str?str:"-unknown-");
 418                 }
 419                 if (array.level == 6) {
 420                         str = map_num(r6layout, array.layout);
 421                         printf("         Layout : %s\n", str?str:"-unknown-");
 422                 }
 423                 if (array.level == 10) {
 424                         printf("         Layout :");
 425                         print_r10_layout(array.layout);
 426                         printf("\n");
 427                 }
 428                 switch (array.level) {
 429                 case 0:
 430                 case 4:
 431                 case 5:
 432                 case 10:
 433                 case 6:
 434                         if (array.chunk_size)
 435                                 printf("     Chunk Size : %dK\n\n",
 436                                        array.chunk_size/1024);
 437                         break;
 438                 case -1:
 439                         printf("       Rounding : %dK\n\n", array.chunk_size/1024);
 440                         break;
 441                 default: break;
 442                 }
 443
 444                 if (e && e->percent >= 0) {
 445                         static char *sync_action[] = {
 446                                 "Rebuild", "Resync",
 447                                 "Reshape", "Check"};
 448                         printf(" %7s Status : %d%% complete\n", sync_action[e->resync], e->percent);
 449                         is_rebuilding = 1;
 450                 }
 451                 free_mdstat(ms);
 452
 453                 if ((st && st->sb) && (info && info->reshape_active)) {
 454 #if 0
 455 This is pretty boring
 456                         printf("  Reshape pos'n : %llu%s\n", (unsigned long long) info->reshape_progress<<9,
 457                                human_size((unsigned long long)info->reshape_progress<<9));
 458 #endif
 459                         if (info->delta_disks != 0)
 460                                 printf("  Delta Devices : %d, (%d->%d)\n",
 461                                        info->delta_disks,
 462                                        array.raid_disks - info->delta_disks,
 463                                        array.raid_disks);
 464                         if (info->new_level != array.level) {
 465                                 str = map_num(pers, info->new_level);
 466                                 printf("      New Level : %s\n", str?str:"-unknown-");
 467                         }
 468                         if (info->new_level != array.level ||
 469                             info->new_layout != array.layout) {
 470                                 if (info->new_level == 5) {
 471                                         str = map_num(r5layout, info->new_layout);
 472                                         printf("     New Layout : %s\n",
 473                                                str?str:"-unknown-");
 474                                 }
 475                                 if (info->new_level == 6) {
 476                                         str = map_num(r6layout, info->new_layout);
 477                                         printf("     New Layout : %s\n",
 478                                                str?str:"-unknown-");
 479                                 }
 480                                 if (info->new_level == 10) {
 481                                         printf("     New Layout : near=%d, %s=%d\n",
 482                                                info->new_layout&255,
 483                                                (info->new_layout&0x10000)?"offset":"far",
 484                                                (info->new_layout>>8)&255);
 485                                 }
 486                         }
 487                         if (info->new_chunk != array.chunk_size)
 488                                 printf("  New Chunksize : %dK\n", info->new_chunk/1024);
 489                         printf("\n");
 490                 } else if (e && e->percent >= 0)
 491                         printf("\n");
 492                 if (st && st->sb)
 493                         st->ss->detail_super(st, c->homehost);
 494
 495                 if (array.raid_disks == 0 && sra && sra->array.major_version == -1
 496                     && sra->array.minor_version == -2 && sra->text_version[0] != '/') {
 497                         /* This looks like a container.  Find any active arrays
 498                          * That claim to be a member.
 499                          */
 500                         DIR *dir = opendir("/sys/block");
 501                         struct dirent *de;
 502
 503                         printf("  Member Arrays :");
 504
 505                         while (dir && (de = readdir(dir)) != NULL) {
 506                                 char path[200];
 507                                 char vbuf[1024];
 508                                 int nlen = strlen(sra->sys_name);
 509                                 int devid;
 510                                 if (de->d_name[0] == '.')
 511                                         continue;
 512                                 sprintf(path, "/sys/block/%s/md/metadata_version",
 513                                         de->d_name);
 514                                 if (load_sys(path, vbuf) < 0)
 515                                         continue;
 516                                 if (strncmp(vbuf, "external:", 9) != 0 ||
 517                                     !is_subarray(vbuf+9) ||
 518                                     strncmp(vbuf+10, sra->sys_name, nlen) != 0 ||
 519                                     vbuf[10+nlen] != '/')
 520                                         continue;
 521                                 devid = devnm2devid(de->d_name);
 522                                 printf(" %s", map_dev_preferred(
 523                                                major(devid),
 524                                                minor(devid), 1, c->prefer));
 525                         }
 526                         if (dir)
 527                                 closedir(dir);
 528                         printf("\n\n");
 529                 }
 530
 531                 if (array.raid_disks)
 532                         printf("    Number   Major   Minor   RaidDevice State\n");
 533                 else
 534                         printf("    Number   Major   Minor   RaidDevice\n");
 535         }
 536         free(info);
 537
 538         for (d= 0; d < max_disks; d++) {
 539                 char *dv;
 540                 mdu_disk_info_t disk = disks[d];
 541
 542                 if (d >= array.raid_disks*2 &&
 543                     disk.major == 0 &&
 544                     disk.minor == 0)
 545                         continue;
 546                 if ((d & 1) &&
 547                     disk.major == 0 &&
 548                     disk.minor == 0)
 549                         continue;
 550                 if (!c->brief) {
 551                         if (d == array.raid_disks*2) printf("\n");
 552                         if (disk.raid_disk < 0)
 553                                 printf("   %5d   %5d    %5d        -     ",
 554                                        disk.number, disk.major, disk.minor);
 555                         else
 556                                 printf("   %5d   %5d    %5d    %5d     ",
 557                                        disk.number, disk.major, disk.minor, disk.raid_disk);
 558                 }
 559                 if (!c->brief && array.raid_disks) {
 560
 561                         if (disk.state & (1<<MD_DISK_FAULTY)) {
 562                                 printf(" faulty");
 563                                 if (disk.raid_disk < array.raid_disks &&
 564                                     disk.raid_disk >= 0)
 565                                         failed++;
 566                         }
 567                         if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
 568                         if (disk.state & (1<<MD_DISK_SYNC)) {
 569                                 printf(" sync");
 570                                 if (array.level == 10 && (array.layout & ~0x1FFFF) == 0) {
 571                                         int nc = array.layout & 0xff;
 572                                         int fc = (array.layout >> 8) & 0xff;
 573                                         int copies = nc*fc;
 574                                         if (fc == 1 && array.raid_disks % copies == 0 && copies <= 26) {
 575                                                 /* We can divide the devices into 'sets' */
 576                                                 int set = disk.raid_disk % copies;
 577                                                 printf(" set-%c", set + 'A');
 578                                         }
 579                                 }
 580                         }
 581                         if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
 582                         if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
 583                         if ((disk.state &
 584                              ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)
 585                               |(1<<MD_DISK_REMOVED)|(1<<MD_DISK_FAULTY)))
 586                             == 0) {
 587                                 printf(" spare");
 588                                 if (is_26) {
 589                                         if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
 590                                                 printf(" rebuilding");
 591                                 } else if (is_rebuilding && failed) {
 592                                         /* Taking a bit of a risk here, we remove the
 593                                          * device from the array, and then put it back.
 594                                          * If this fails, we are rebuilding
 595                                          */
 596                                         int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
 597                                         if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
 598                                         if (err && errno ==  EBUSY)
 599                                                 printf(" rebuilding");
 600                                 }
 601                         }
 602                 }
 603                 if (disk.state == 0) spares++;
 604                 if (c->test && d < array.raid_disks
 605                     && !(disk.state & (1<<MD_DISK_SYNC)))
 606                         rv |= 1;
 607                 dv=map_dev_preferred(disk.major, disk.minor, 0, c->prefer);
 608                 if (dv != NULL) {
 609                         if (c->brief) {
 610                                 if (devices) {
 611                                         devices = xrealloc(devices,
 612                                                           strlen(devices)+1+strlen(dv)+1);
 613                                         strcat(strcat(devices,","),dv);
 614                                 } else
 615                                         devices = xstrdup(dv);
 616                         } else
 617                                 printf("   %s", dv);
 618                 }
 619                 if (!c->brief) printf("\n");
 620         }
 621         if (spares && c->brief && array.raid_disks) printf(" spares=%d", spares);
 622         if (c->brief && st && st->sb)
 623                 st->ss->brief_detail_super(st);
 624         if (st)
 625                 st->ss->free_super(st);
 626
 627         if (c->brief > 1 && devices) printf("\n   devices=%s", devices);
 628         if (c->brief)
 629                 printf("\n");
 630         if (c->test &&
 631             !enough(array.level, array.raid_disks, array.layout,
 632                     1, avail))
 633                 rv = 2;
 634
 635         free(disks);
 636 out:
 637         close(fd);
 638         free(subarray);
 639         free(avail);
 640         sysfs_free(sra);
 641         return rv;
 642 }
 643
 644 int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path)
 645 {
 646         /* display platform capabilities for the given metadata format
 647          * 'scan' in this context means iterate over all metadata types
 648          */
 649         int i;
 650         int err = 1;
 651
 652         if (ss && export && ss->export_detail_platform)
 653                 err = ss->export_detail_platform(verbose, controller_path);
 654         else if (ss && ss->detail_platform)
 655                 err = ss->detail_platform(verbose, 0, controller_path);
 656         else if (ss) {
 657                 if (verbose > 0)
 658                         pr_err("%s metadata is platform independent\n",
 659                                 ss->name ? : "[no name]");
 660         } else if (!scan) {
 661                 if (verbose > 0)
 662                         pr_err("specify a metadata type or --scan\n");
 663         }
 664
 665         if (!scan)
 666                 return err;
 667
 668         err = 0;
 669         for (i = 0; superlist[i]; i++) {
 670                 struct superswitch *meta = superlist[i];
 671
 672                 if (meta == ss)
 673                         continue;
 674                 if (verbose > 0)
 675                         pr_err("checking metadata %s\n",
 676                                 meta->name ? : "[no name]");
 677                 if (!meta->detail_platform) {
 678                         if (verbose > 0)
 679                                 pr_err("%s metadata is platform independent\n",
 680                                         meta->name ? : "[no name]");
 681                 } else if (export && meta->export_detail_platform) {
 682                         err |= meta->export_detail_platform(verbose, controller_path);
 683                 } else
 684                         err |= meta->detail_platform(verbose, 0, controller_path);
 685         }
 686
 687         return err;
 688 }