Detail.c

   1 /*
   2  * mdadm - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2009 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, 0, 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 dn = st->container_dev;
 106
 107                 member = subarray;
 108                 container = map_dev_preferred(dev2major(dn), dev2minor(dn), 1, c->prefer);
 109         }
 110
 111         /* try to load a superblock */
 112         if (st) for (d = 0; d < max_disks; d++) {
 113                 mdu_disk_info_t disk;
 114                 char *dv;
 115                 int fd2;
 116                 int err;
 117                 disk.number = d;
 118                 if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
 119                         continue;
 120                 if (d >= array.raid_disks &&
 121                     disk.major == 0 &&
 122                     disk.minor == 0)
 123                         continue;
 124
 125                 if (array.raid_disks > 0 &&
 126                     (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
 127                         continue;
 128
 129                 dv = map_dev(disk.major, disk.minor, 1);
 130                 if (!dv)
 131                         continue;
 132
 133                 fd2 = dev_open(dv, O_RDONLY);
 134                 if (fd2 < 0)
 135                         continue;
 136
 137                 if (st->sb)
 138                         st->ss->free_super(st);
 139
 140                 err = st->ss->load_super(st, fd2, NULL);
 141                 close(fd2);
 142                 if (err)
 143                         continue;
 144                 if (info)
 145                         free(info);
 146                 if (subarray)
 147                         info = st->ss->container_content(st, subarray);
 148                 else {
 149                         info = xmalloc(sizeof(*info));
 150                         st->ss->getinfo_super(st, info, NULL);
 151                 }
 152                 if (!info)
 153                         continue;
 154
 155                 if (array.raid_disks != 0 && /* container */
 156                     (info->array.ctime != array.ctime ||
 157                      info->array.level != array.level)) {
 158                         st->ss->free_super(st);
 159                         continue;
 160                 }
 161                 /* some formats (imsm) have free-floating-spares
 162                  * with a uuid of uuid_zero, they don't
 163                  * have very good info about the rest of the
 164                  * container, so keep searching when
 165                  * encountering such a device.  Otherwise, stop
 166                  * after the first successful call to
 167                  * ->load_super.
 168                  */
 169                 if (memcmp(uuid_zero,
 170                            info->uuid,
 171                            sizeof(uuid_zero)) == 0) {
 172                         st->ss->free_super(st);
 173                         continue;
 174                 }
 175                 break;
 176         }
 177
 178         /* Ok, we have some info to print... */
 179         str = map_num(pers, array.level);
 180
 181         if (c->export) {
 182                 if (array.raid_disks) {
 183                         if (str)
 184                                 printf("MD_LEVEL=%s\n", str);
 185                         printf("MD_DEVICES=%d\n", array.raid_disks);
 186                 } else {
 187                         printf("MD_LEVEL=container\n");
 188                         printf("MD_DEVICES=%d\n", array.nr_disks);
 189                 }
 190                 if (container) {
 191                         printf("MD_CONTAINER=%s\n", container);
 192                         printf("MD_MEMBER=%s\n", member);
 193                 } else {
 194                         if (sra && sra->array.major_version < 0)
 195                                 printf("MD_METADATA=%s\n", sra->text_version);
 196                         else
 197                                 printf("MD_METADATA=%d.%d\n",
 198                                        array.major_version, array.minor_version);
 199                 }
 200
 201                 if (st && st->sb && info) {
 202                         char nbuf[64];
 203                         struct map_ent *mp, *map = NULL;
 204
 205                         fname_from_uuid(st, info, nbuf, ':');
 206                         printf("MD_UUID=%s\n", nbuf+5);
 207                         mp = map_by_uuid(&map, info->uuid);
 208                         if (mp && mp->path &&
 209                             strncmp(mp->path, "/dev/md/", 8) == 0)
 210                                 printf("MD_DEVNAME=%s\n", mp->path+8);
 211
 212                         if (st->ss->export_detail_super)
 213                                 st->ss->export_detail_super(st);
 214                 } else {
 215                         struct map_ent *mp, *map = NULL;
 216                         char nbuf[64];
 217                         mp = map_by_devnum(&map, fd2devnum(fd));
 218                         if (mp) {
 219                                 __fname_from_uuid(mp->uuid, 0, nbuf, ':');
 220                                 printf("MD_UUID=%s\n", nbuf+5);
 221                         }
 222                         if (mp && mp->path &&
 223                             strncmp(mp->path, "/dev/md/", 8) == 0)
 224                                 printf("MD_DEVNAME=%s\n", mp->path+8);
 225                 }
 226                 goto out;
 227         }
 228
 229         disks = xmalloc(max_disks * sizeof(mdu_disk_info_t));
 230         for (d=0; d<max_disks; d++) {
 231                 disks[d].state = (1<<MD_DISK_REMOVED);
 232                 disks[d].major = disks[d].minor = 0;
 233                 disks[d].number = disks[d].raid_disk = d;
 234         }
 235
 236         next = array.raid_disks;
 237         for (d=0; d < max_disks; d++) {
 238                 mdu_disk_info_t disk;
 239                 disk.number = d;
 240                 if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
 241                         if (d < array.raid_disks)
 242                                 pr_err("cannot get device detail for device %d: %s\n",
 243                                         d, strerror(errno));
 244                         continue;
 245                 }
 246                 if (disk.major == 0 && disk.minor == 0)
 247                         continue;
 248                 if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks)
 249                         disks[disk.raid_disk] = disk;
 250                 else if (next < max_disks)
 251                         disks[next++] = disk;
 252         }
 253
 254         avail = xcalloc(array.raid_disks, 1);
 255
 256         for (d= 0; d < array.raid_disks; d++) {
 257                 mdu_disk_info_t disk = disks[d];
 258
 259                 if ((disk.state & (1<<MD_DISK_SYNC))) {
 260                         avail_disks ++;
 261                         avail[d] = 1;
 262                 }
 263         }
 264
 265         if (c->brief) {
 266                 mdu_bitmap_file_t bmf;
 267                 printf("ARRAY %s", dev);
 268                 if (c->brief > 1) {
 269                         if (array.raid_disks)
 270                                 printf(" level=%s num-devices=%d",
 271                                        str?str:"-unknown-",
 272                                        array.raid_disks );
 273                         else
 274                                 printf(" level=container num-devices=%d",
 275                                        array.nr_disks);
 276                 }
 277                 if (container) {
 278                         printf(" container=%s", container);
 279                         printf(" member=%s", member);
 280                 } else {
 281                         if (sra && sra->array.major_version < 0)
 282                                 printf(" metadata=%s", sra->text_version);
 283                         else
 284                                 printf(" metadata=%d.%d",
 285                                        array.major_version, array.minor_version);
 286                 }
 287
 288                 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
 289                 if (vers >= 9001 &&
 290                     ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
 291                     bmf.pathname[0]) {
 292                         printf(" bitmap=%s", bmf.pathname);
 293                 }
 294         } else {
 295                 mdu_bitmap_file_t bmf;
 296                 unsigned long long larray_size;
 297                 struct mdstat_ent *ms = mdstat_read(0, 0);
 298                 struct mdstat_ent *e;
 299                 int devnum = array.md_minor;
 300                 if (major(stb.st_rdev) == (unsigned)get_mdp_major())
 301                         devnum = -1 - devnum;
 302
 303                 for (e=ms; e; e=e->next)
 304                         if (e->devnum == devnum)
 305                                 break;
 306                 if (!get_dev_size(fd, NULL, &larray_size))
 307                         larray_size = 0;
 308
 309                 printf("%s:\n", dev);
 310
 311                 if (container)
 312                         printf("      Container : %s, member %s\n", container, member);
 313                 else {
 314                 if (sra && sra->array.major_version < 0)
 315                         printf("        Version : %s\n", sra->text_version);
 316                 else
 317                         printf("        Version : %d.%d\n",
 318                                array.major_version, array.minor_version);
 319                 }
 320
 321                 atime = array.ctime;
 322                 if (atime)
 323                         printf("  Creation Time : %.24s\n", ctime(&atime));
 324                 if (array.raid_disks == 0)
 325                         str = "container";
 326                 printf("     Raid Level : %s\n", str?str:"-unknown-");
 327                 if (larray_size)
 328                         printf("     Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
 329                 if (array.level >= 1) {
 330                         if (array.major_version != 0 &&
 331                             (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
 332                                 unsigned long long dsize = get_component_size(fd);
 333                                 if (dsize > 0)
 334                                         printf("  Used Dev Size : %llu%s\n",
 335                                                dsize/2,
 336                                          human_size((long long)dsize<<9));
 337                                 else
 338                                         printf("  Used Dev Size : unknown\n");
 339                         } else
 340                                 printf("  Used Dev Size : %d%s\n", array.size,
 341                                        human_size((long long)array.size<<10));
 342                 }
 343                 if (array.raid_disks)
 344                         printf("   Raid Devices : %d\n", array.raid_disks);
 345                 printf("  Total Devices : %d\n", array.nr_disks);
 346                 if (!container &&
 347                     ((sra == NULL && array.major_version == 0) ||
 348                      (sra && sra->array.major_version == 0)))
 349                         printf("Preferred Minor : %d\n", array.md_minor);
 350                 if (sra == NULL || sra->array.major_version >= 0)
 351                         printf("    Persistence : Superblock is %spersistent\n",
 352                                array.not_persistent?"not ":"");
 353                 printf("\n");
 354                 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
 355                 if (vers >= 9001 &&
 356                     ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
 357                     bmf.pathname[0]) {
 358                         printf("  Intent Bitmap : %s\n", bmf.pathname);
 359                         printf("\n");
 360                 } else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
 361                         printf("  Intent Bitmap : Internal\n\n");
 362                 atime = array.utime;
 363                 if (atime)
 364                         printf("    Update Time : %.24s\n", ctime(&atime));
 365                 if (array.raid_disks) {
 366                         static char *sync_action[] = {", recovering",", resyncing",", reshaping",", checking"};
 367                         char *st;
 368                         if (avail_disks == array.raid_disks)
 369                                 st = "";
 370                         else if (!enough(array.level, array.raid_disks,
 371                                          array.layout, 1, avail))
 372                                 st = ", FAILED";
 373                         else
 374                                 st = ", degraded";
 375
 376                         printf("          State : %s%s%s%s%s%s \n",
 377                                (array.state&(1<<MD_SB_CLEAN))?"clean":"active", st,
 378                                (!e || (e->percent < 0 && e->percent != RESYNC_PENDING &&
 379                                e->percent != RESYNC_DELAYED)) ? "" : sync_action[e->resync],
 380                                larray_size ? "": ", Not Started",
 381                                e->percent == RESYNC_DELAYED ? " (DELAYED)": "",
 382                                e->percent == RESYNC_PENDING ? " (PENDING)": "");
 383                 }
 384                 if (array.raid_disks)
 385                         printf(" Active Devices : %d\n", array.active_disks);
 386                 printf("Working Devices : %d\n", array.working_disks);
 387                 if (array.raid_disks) {
 388                         printf(" Failed Devices : %d\n", array.failed_disks);
 389                         printf("  Spare Devices : %d\n", array.spare_disks);
 390                 }
 391                 printf("\n");
 392                 if (array.level == 5) {
 393                         str = map_num(r5layout, array.layout);
 394                         printf("         Layout : %s\n", str?str:"-unknown-");
 395                 }
 396                 if (array.level == 6) {
 397                         str = map_num(r6layout, array.layout);
 398                         printf("         Layout : %s\n", str?str:"-unknown-");
 399                 }
 400                 if (array.level == 10) {
 401                         printf("         Layout :");
 402                         print_r10_layout(array.layout);
 403                         printf("\n");
 404                 }
 405                 switch (array.level) {
 406                 case 0:
 407                 case 4:
 408                 case 5:
 409                 case 10:
 410                 case 6:
 411                         if (array.chunk_size)
 412                                 printf("     Chunk Size : %dK\n\n",
 413                                        array.chunk_size/1024);
 414                         break;
 415                 case -1:
 416                         printf("       Rounding : %dK\n\n", array.chunk_size/1024);
 417                         break;
 418                 default: break;
 419                 }
 420
 421                 if (e && e->percent >= 0) {
 422                         static char *sync_action[] = {"Rebuild", "Resync", "Reshape", "Check"};
 423                         printf(" %7s Status : %d%% complete\n", sync_action[e->resync], e->percent);
 424                         is_rebuilding = 1;
 425                 }
 426                 free_mdstat(ms);
 427
 428                 if (st->sb && info->reshape_active) {
 429 #if 0
 430 This is pretty boring
 431                         printf("  Reshape pos'n : %llu%s\n", (unsigned long long) info->reshape_progress<<9,
 432                                human_size((unsigned long long)info->reshape_progress<<9));
 433 #endif
 434                         if (info->delta_disks != 0)
 435                                 printf("  Delta Devices : %d, (%d->%d)\n",
 436                                        info->delta_disks, array.raid_disks - info->delta_disks, array.raid_disks);
 437                         if (info->new_level != array.level) {
 438                                 str = map_num(pers, info->new_level);
 439                                 printf("      New Level : %s\n", str?str:"-unknown-");
 440                         }
 441                         if (info->new_level != array.level ||
 442                             info->new_layout != array.layout) {
 443                                 if (info->new_level == 5) {
 444                                         str = map_num(r5layout, info->new_layout);
 445                                         printf("     New Layout : %s\n",
 446                                                str?str:"-unknown-");
 447                                 }
 448                                 if (info->new_level == 6) {
 449                                         str = map_num(r6layout, info->new_layout);
 450                                         printf("     New Layout : %s\n",
 451                                                str?str:"-unknown-");
 452                                 }
 453                                 if (info->new_level == 10) {
 454                                         printf("     New Layout : near=%d, %s=%d\n",
 455                                                info->new_layout&255,
 456                                                (info->new_layout&0x10000)?"offset":"far",
 457                                                (info->new_layout>>8)&255);
 458                                 }
 459                         }
 460                         if (info->new_chunk != array.chunk_size)
 461                                 printf("  New Chunksize : %dK\n", info->new_chunk/1024);
 462                         printf("\n");
 463                 } else if (e && e->percent >= 0)
 464                         printf("\n");
 465                 if (st && st->sb)
 466                         st->ss->detail_super(st, c->homehost);
 467
 468                 if (array.raid_disks == 0 && sra && sra->array.major_version == -1
 469                     && sra->array.minor_version == -2 && sra->text_version[0] != '/') {
 470                         /* This looks like a container.  Find any active arrays
 471                          * That claim to be a member.
 472                          */
 473                         DIR *dir = opendir("/sys/block");
 474                         struct dirent *de;
 475
 476                         printf("  Member Arrays :");
 477
 478                         while (dir && (de = readdir(dir)) != NULL) {
 479                                 char path[200];
 480                                 char vbuf[1024];
 481                                 int nlen = strlen(sra->sys_name);
 482                                 int dn;
 483                                 if (de->d_name[0] == '.')
 484                                         continue;
 485                                 sprintf(path, "/sys/block/%s/md/metadata_version",
 486                                         de->d_name);
 487                                 if (load_sys(path, vbuf) < 0)
 488                                         continue;
 489                                 if (strncmp(vbuf, "external:", 9) != 0 ||
 490                                     !is_subarray(vbuf+9) ||
 491                                     strncmp(vbuf+10, sra->sys_name, nlen) != 0 ||
 492                                     vbuf[10+nlen] != '/')
 493                                         continue;
 494                                 dn = devname2devnum(de->d_name);
 495                                 printf(" %s", map_dev_preferred(
 496                                                dev2major(dn),
 497                                                dev2minor(dn), 1, c->prefer));
 498                         }
 499                         if (dir)
 500                                 closedir(dir);
 501                         printf("\n\n");
 502                 }
 503
 504                 if (array.raid_disks)
 505                         printf("    Number   Major   Minor   RaidDevice State\n");
 506                 else
 507                         printf("    Number   Major   Minor   RaidDevice\n");
 508         }
 509         free(info);
 510
 511         for (d= 0; d < max_disks; d++) {
 512                 char *dv;
 513                 mdu_disk_info_t disk = disks[d];
 514
 515                 if (d >= array.raid_disks &&
 516                     disk.major == 0 &&
 517                     disk.minor == 0)
 518                         continue;
 519                 if (!c->brief) {
 520                         if (d == array.raid_disks) printf("\n");
 521                         if (disk.raid_disk < 0)
 522                                 printf("   %5d   %5d    %5d        -     ",
 523                                        disk.number, disk.major, disk.minor);
 524                         else
 525                                 printf("   %5d   %5d    %5d    %5d     ",
 526                                        disk.number, disk.major, disk.minor, disk.raid_disk);
 527                 }
 528                 if (!c->brief && array.raid_disks) {
 529
 530                         if (disk.state & (1<<MD_DISK_FAULTY)) {
 531                                 printf(" faulty");
 532                                 if (disk.raid_disk < array.raid_disks &&
 533                                     disk.raid_disk >= 0)
 534                                         failed++;
 535                         }
 536                         if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
 537                         if (disk.state & (1<<MD_DISK_SYNC)) {
 538                                 printf(" sync");
 539                                 if (array.level == 10 && (array.layout & ~0x1FFFF) == 0) {
 540                                         int nc = array.layout & 0xff;
 541                                         int fc = (array.layout >> 8) & 0xff;
 542                                         int copies = nc*fc;
 543                                         if (array.raid_disks % copies == 0 && copies <= 26) {
 544                                                 /* We can divide the devices into 'sets' */
 545                                                 int set = disk.raid_disk % copies;
 546                                                 printf(" set-%c", set + 'A');
 547                                         }
 548                                 }
 549                         }
 550                         if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
 551                         if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
 552                         if ((disk.state &
 553                              ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED)))
 554                             == 0) {
 555                                 printf(" spare");
 556                                 if (is_26) {
 557                                         if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
 558                                                 printf(" rebuilding");
 559                                 } else if (is_rebuilding && failed) {
 560                                         /* Taking a bit of a risk here, we remove the
 561                                          * device from the array, and then put it back.
 562                                          * If this fails, we are rebuilding
 563                                          */
 564                                         int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
 565                                         if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
 566                                         if (err && errno ==  EBUSY)
 567                                                 printf(" rebuilding");
 568                                 }
 569                         }
 570                 }
 571                 if (disk.state == 0) spares++;
 572                 if (c->test && d < array.raid_disks
 573                     && !(disk.state & (1<<MD_DISK_SYNC)))
 574                         rv |= 1;
 575                 if ((dv=map_dev_preferred(disk.major, disk.minor, 0, c->prefer))) {
 576                         if (c->brief) {
 577                                 if (devices) {
 578                                         devices = xrealloc(devices,
 579                                                           strlen(devices)+1+strlen(dv)+1);
 580                                         strcat(strcat(devices,","),dv);
 581                                 } else
 582                                         devices = xstrdup(dv);
 583                         } else
 584                                 printf("   %s", dv);
 585                 }
 586                 if (!c->brief) printf("\n");
 587         }
 588         if (spares && c->brief && array.raid_disks) printf(" spares=%d", spares);
 589         if (c->brief && st && st->sb)
 590                 st->ss->brief_detail_super(st);
 591         st->ss->free_super(st);
 592
 593         if (c->brief > 1 && devices) printf("\n   devices=%s", devices);
 594         if (c->brief)
 595                 printf("\n");
 596         if (c->test &&
 597             !enough(array.level, array.raid_disks, array.layout,
 598                     1, avail))
 599                 rv = 2;
 600
 601         free(disks);
 602 out:
 603         close(fd);
 604         free(subarray);
 605         free(avail);
 606         sysfs_free(sra);
 607         return rv;
 608 }
 609
 610 int Detail_Platform(struct superswitch *ss, int scan, int verbose)
 611 {
 612         /* display platform capabilities for the given metadata format
 613          * 'scan' in this context means iterate over all metadata types
 614          */
 615         int i;
 616         int err = 1;
 617
 618         if (ss && ss->detail_platform)
 619                 err = ss->detail_platform(verbose, 0);
 620         else if (ss) {
 621                 if (verbose > 0)
 622                         pr_err("%s metadata is platform independent\n",
 623                                 ss->name ? : "[no name]");
 624         } else if (!scan) {
 625                 if (verbose > 0)
 626                         pr_err("specify a metadata type or --scan\n");
 627         }
 628
 629         if (!scan)
 630                 return err;
 631
 632         for (i = 0; superlist[i]; i++) {
 633                 struct superswitch *meta = superlist[i];
 634
 635                 if (meta == ss)
 636                         continue;
 637                 if (verbose > 0)
 638                         pr_err("checking metadata %s\n",
 639                                 meta->name ? : "[no name]");
 640                 if (!meta->detail_platform) {
 641                         if (verbose > 0)
 642                                 pr_err("%s metadata is platform independent\n",
 643                                         meta->name ? : "[no name]");
 644                 } else
 645                         err |= meta->detail_platform(verbose, 0);
 646         }
 647
 648         return err;
 649 }