sys/geom/raid/md_intel.c

   1 /*-
   2  * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org>
   3  * Copyright (c) 2000 - 2008 Søren Schmidt <sos@FreeBSD.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __FBSDID("$FreeBSD$");
  30
  31 #include <sys/param.h>
  32 #include <sys/bio.h>
  33 #include <sys/endian.h>
  34 #include <sys/kernel.h>
  35 #include <sys/kobj.h>
  36 #include <sys/limits.h>
  37 #include <sys/lock.h>
  38 #include <sys/malloc.h>
  39 #include <sys/mutex.h>
  40 #include <sys/systm.h>
  41 #include <sys/taskqueue.h>
  42 #include <geom/geom.h>
  43 #include "geom/raid/g_raid.h"
  44 #include "g_raid_md_if.h"
  45
  46 static MALLOC_DEFINE(M_MD_INTEL, "md_intel_data", "GEOM_RAID Intel metadata");
  47
  48 struct intel_raid_map {
  49         uint32_t        offset;
  50         uint32_t        disk_sectors;
  51         uint32_t        stripe_count;
  52         uint16_t        strip_sectors;
  53         uint8_t         status;
  54 #define INTEL_S_READY           0x00
  55 #define INTEL_S_UNINITIALIZED   0x01
  56 #define INTEL_S_DEGRADED        0x02
  57 #define INTEL_S_FAILURE         0x03
  58
  59         uint8_t         type;
  60 #define INTEL_T_RAID0           0x00
  61 #define INTEL_T_RAID1           0x01
  62 #define INTEL_T_RAID5           0x05
  63
  64         uint8_t         total_disks;
  65         uint8_t         total_domains;
  66         uint8_t         failed_disk_num;
  67         uint8_t         ddf;
  68         uint32_t        offset_hi;
  69         uint32_t        disk_sectors_hi;
  70         uint32_t        stripe_count_hi;
  71         uint32_t        filler_2[4];
  72         uint32_t        disk_idx[1];    /* total_disks entries. */
  73 #define INTEL_DI_IDX    0x00ffffff
  74 #define INTEL_DI_RBLD   0x01000000
  75 } __packed;
  76
  77 struct intel_raid_vol {
  78         uint8_t         name[16];
  79         u_int64_t       total_sectors __packed;
  80         uint32_t        state;
  81 #define INTEL_ST_BOOTABLE               0x00000001
  82 #define INTEL_ST_BOOT_DEVICE            0x00000002
  83 #define INTEL_ST_READ_COALESCING        0x00000004
  84 #define INTEL_ST_WRITE_COALESCING       0x00000008
  85 #define INTEL_ST_LAST_SHUTDOWN_DIRTY    0x00000010
  86 #define INTEL_ST_HIDDEN_AT_BOOT         0x00000020
  87 #define INTEL_ST_CURRENTLY_HIDDEN       0x00000040
  88 #define INTEL_ST_VERIFY_AND_FIX         0x00000080
  89 #define INTEL_ST_MAP_STATE_UNINIT       0x00000100
  90 #define INTEL_ST_NO_AUTO_RECOVERY       0x00000200
  91 #define INTEL_ST_CLONE_N_GO             0x00000400
  92 #define INTEL_ST_CLONE_MAN_SYNC         0x00000800
  93 #define INTEL_ST_CNG_MASTER_DISK_NUM    0x00001000
  94         uint32_t        reserved;
  95         uint8_t         migr_priority;
  96         uint8_t         num_sub_vols;
  97         uint8_t         tid;
  98         uint8_t         cng_master_disk;
  99         uint16_t        cache_policy;
 100         uint8_t         cng_state;
 101 #define INTEL_CNGST_UPDATED             0
 102 #define INTEL_CNGST_NEEDS_UPDATE        1
 103 #define INTEL_CNGST_MASTER_MISSING      2
 104         uint8_t         cng_sub_state;
 105         uint32_t        filler_0[10];
 106
 107         uint32_t        curr_migr_unit;
 108         uint32_t        checkpoint_id;
 109         uint8_t         migr_state;
 110         uint8_t         migr_type;
 111 #define INTEL_MT_INIT           0
 112 #define INTEL_MT_REBUILD        1
 113 #define INTEL_MT_VERIFY         2
 114 #define INTEL_MT_GEN_MIGR       3
 115 #define INTEL_MT_STATE_CHANGE   4
 116 #define INTEL_MT_REPAIR         5
 117         uint8_t         dirty;
 118         uint8_t         fs_state;
 119         uint16_t        verify_errors;
 120         uint16_t        bad_blocks;
 121         uint32_t        curr_migr_unit_hi;
 122         uint32_t        filler_1[3];
 123         struct intel_raid_map map[1];   /* 2 entries if migr_state != 0. */
 124 } __packed;
 125
 126 struct intel_raid_disk {
 127 #define INTEL_SERIAL_LEN        16
 128         uint8_t         serial[INTEL_SERIAL_LEN];
 129         uint32_t        sectors;
 130         uint32_t        id;
 131         uint32_t        flags;
 132 #define INTEL_F_SPARE           0x01
 133 #define INTEL_F_ASSIGNED        0x02
 134 #define INTEL_F_FAILED          0x04
 135 #define INTEL_F_ONLINE          0x08
 136 #define INTEL_F_DISABLED        0x80
 137         uint32_t        owner_cfg_num;
 138         uint32_t        sectors_hi;
 139         uint32_t        filler[3];
 140 } __packed;
 141
 142 struct intel_raid_conf {
 143         uint8_t         intel_id[24];
 144 #define INTEL_MAGIC             "Intel Raid ISM Cfg Sig. "
 145
 146         uint8_t         version[6];
 147 #define INTEL_VERSION_1000      "1.0.00"        /* RAID0 */
 148 #define INTEL_VERSION_1100      "1.1.00"        /* RAID1 */
 149 #define INTEL_VERSION_1200      "1.2.00"        /* Many volumes */
 150 #define INTEL_VERSION_1201      "1.2.01"        /* 3 or 4 disks */
 151 #define INTEL_VERSION_1202      "1.2.02"        /* RAID5 */
 152 #define INTEL_VERSION_1204      "1.2.04"        /* 5 or 6 disks */
 153 #define INTEL_VERSION_1206      "1.2.06"        /* CNG */
 154 #define INTEL_VERSION_1300      "1.3.00"        /* Attributes */
 155
 156         uint8_t         dummy_0[2];
 157         uint32_t        checksum;
 158         uint32_t        config_size;
 159         uint32_t        config_id;
 160         uint32_t        generation;
 161         uint32_t        error_log_size;
 162         uint32_t        attributes;
 163 #define INTEL_ATTR_RAID0        0x00000001
 164 #define INTEL_ATTR_RAID1        0x00000002
 165 #define INTEL_ATTR_RAID10       0x00000004
 166 #define INTEL_ATTR_RAID1E       0x00000008
 167 #define INTEL_ATTR_RAID5        0x00000010
 168 #define INTEL_ATTR_RAIDCNG      0x00000020
 169 #define INTEL_ATTR_EXT_STRIP    0x00000040
 170 #define INTEL_ATTR_NVM_CACHE    0x02000000
 171 #define INTEL_ATTR_2TB_DISK     0x04000000
 172 #define INTEL_ATTR_BBM          0x08000000
 173 #define INTEL_ATTR_NVM_CACHE2   0x10000000
 174 #define INTEL_ATTR_2TB          0x20000000
 175 #define INTEL_ATTR_PM           0x40000000
 176 #define INTEL_ATTR_CHECKSUM     0x80000000
 177
 178         uint8_t         total_disks;
 179         uint8_t         total_volumes;
 180         uint8_t         error_log_pos;
 181         uint8_t         dummy_2[1];
 182         uint32_t        cache_size;
 183         uint32_t        orig_config_id;
 184         uint32_t        pwr_cycle_count;
 185         uint32_t        bbm_log_size;
 186         uint32_t        filler_0[35];
 187         struct intel_raid_disk  disk[1];        /* total_disks entries. */
 188         /* Here goes total_volumes of struct intel_raid_vol. */
 189 } __packed;
 190
 191 #define INTEL_ATTR_SUPPORTED    ( INTEL_ATTR_RAID0 | INTEL_ATTR_RAID1 | \
 192     INTEL_ATTR_RAID10 | INTEL_ATTR_RAID1E | INTEL_ATTR_RAID5 |          \
 193     INTEL_ATTR_RAIDCNG | INTEL_ATTR_EXT_STRIP | INTEL_ATTR_2TB_DISK |   \
 194     INTEL_ATTR_2TB | INTEL_ATTR_PM | INTEL_ATTR_CHECKSUM )
 195
 196 #define INTEL_MAX_MD_SIZE(ndisks)                               \
 197     (sizeof(struct intel_raid_conf) +                           \
 198      sizeof(struct intel_raid_disk) * (ndisks - 1) +            \
 199      sizeof(struct intel_raid_vol) * 2 +                        \
 200      sizeof(struct intel_raid_map) * 2 +                        \
 201      sizeof(uint32_t) * (ndisks - 1) * 4)
 202
 203 struct g_raid_md_intel_perdisk {
 204         struct intel_raid_conf  *pd_meta;
 205         int                      pd_disk_pos;
 206         struct intel_raid_disk   pd_disk_meta;
 207 };
 208
 209 struct g_raid_md_intel_pervolume {
 210         int                      pv_volume_pos;
 211         int                      pv_cng;
 212         int                      pv_cng_man_sync;
 213         int                      pv_cng_master_disk;
 214 };
 215
 216 struct g_raid_md_intel_object {
 217         struct g_raid_md_object  mdio_base;
 218         uint32_t                 mdio_config_id;
 219         uint32_t                 mdio_orig_config_id;
 220         uint32_t                 mdio_generation;
 221         struct intel_raid_conf  *mdio_meta;
 222         struct callout           mdio_start_co; /* STARTING state timer. */
 223         int                      mdio_disks_present;
 224         int                      mdio_started;
 225         int                      mdio_incomplete;
 226         struct root_hold_token  *mdio_rootmount; /* Root mount delay token. */
 227 };
 228
 229 static g_raid_md_create_t g_raid_md_create_intel;
 230 static g_raid_md_taste_t g_raid_md_taste_intel;
 231 static g_raid_md_event_t g_raid_md_event_intel;
 232 static g_raid_md_ctl_t g_raid_md_ctl_intel;
 233 static g_raid_md_write_t g_raid_md_write_intel;
 234 static g_raid_md_fail_disk_t g_raid_md_fail_disk_intel;
 235 static g_raid_md_free_disk_t g_raid_md_free_disk_intel;
 236 static g_raid_md_free_volume_t g_raid_md_free_volume_intel;
 237 static g_raid_md_free_t g_raid_md_free_intel;
 238
 239 static kobj_method_t g_raid_md_intel_methods[] = {
 240         KOBJMETHOD(g_raid_md_create,    g_raid_md_create_intel),
 241         KOBJMETHOD(g_raid_md_taste,     g_raid_md_taste_intel),
 242         KOBJMETHOD(g_raid_md_event,     g_raid_md_event_intel),
 243         KOBJMETHOD(g_raid_md_ctl,       g_raid_md_ctl_intel),
 244         KOBJMETHOD(g_raid_md_write,     g_raid_md_write_intel),
 245         KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_intel),
 246         KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_intel),
 247         KOBJMETHOD(g_raid_md_free_volume,       g_raid_md_free_volume_intel),
 248         KOBJMETHOD(g_raid_md_free,      g_raid_md_free_intel),
 249         { 0, 0 }
 250 };
 251
 252 static struct g_raid_md_class g_raid_md_intel_class = {
 253         "Intel",
 254         g_raid_md_intel_methods,
 255         sizeof(struct g_raid_md_intel_object),
 256         .mdc_enable = 1,
 257         .mdc_priority = 100
 258 };
 259
 260
 261 static struct intel_raid_map *
 262 intel_get_map(struct intel_raid_vol *mvol, int i)
 263 {
 264         struct intel_raid_map *mmap;
 265
 266         if (i > (mvol->migr_state ? 1 : 0))
 267                 return (NULL);
 268         mmap = &mvol->map[0];
 269         for (; i > 0; i--) {
 270                 mmap = (struct intel_raid_map *)
 271                     &mmap->disk_idx[mmap->total_disks];
 272         }
 273         return ((struct intel_raid_map *)mmap);
 274 }
 275
 276 static struct intel_raid_vol *
 277 intel_get_volume(struct intel_raid_conf *meta, int i)
 278 {
 279         struct intel_raid_vol *mvol;
 280         struct intel_raid_map *mmap;
 281
 282         if (i > 1)
 283                 return (NULL);
 284         mvol = (struct intel_raid_vol *)&meta->disk[meta->total_disks];
 285         for (; i > 0; i--) {
 286                 mmap = intel_get_map(mvol, mvol->migr_state ? 1 : 0);
 287                 mvol = (struct intel_raid_vol *)
 288                     &mmap->disk_idx[mmap->total_disks];
 289         }
 290         return (mvol);
 291 }
 292
 293 static off_t
 294 intel_get_map_offset(struct intel_raid_map *mmap)
 295 {
 296         off_t offset = (off_t)mmap->offset_hi << 32;
 297
 298         offset += mmap->offset;
 299         return (offset);
 300 }
 301
 302 static void
 303 intel_set_map_offset(struct intel_raid_map *mmap, off_t offset)
 304 {
 305
 306         mmap->offset = offset & 0xffffffff;
 307         mmap->offset_hi = offset >> 32;
 308 }
 309
 310 static off_t
 311 intel_get_map_disk_sectors(struct intel_raid_map *mmap)
 312 {
 313         off_t disk_sectors = (off_t)mmap->disk_sectors_hi << 32;
 314
 315         disk_sectors += mmap->disk_sectors;
 316         return (disk_sectors);
 317 }
 318
 319 static void
 320 intel_set_map_disk_sectors(struct intel_raid_map *mmap, off_t disk_sectors)
 321 {
 322
 323         mmap->disk_sectors = disk_sectors & 0xffffffff;
 324         mmap->disk_sectors_hi = disk_sectors >> 32;
 325 }
 326
 327 static void
 328 intel_set_map_stripe_count(struct intel_raid_map *mmap, off_t stripe_count)
 329 {
 330
 331         mmap->stripe_count = stripe_count & 0xffffffff;
 332         mmap->stripe_count_hi = stripe_count >> 32;
 333 }
 334
 335 static off_t
 336 intel_get_disk_sectors(struct intel_raid_disk *disk)
 337 {
 338         off_t sectors = (off_t)disk->sectors_hi << 32;
 339
 340         sectors += disk->sectors;
 341         return (sectors);
 342 }
 343
 344 static void
 345 intel_set_disk_sectors(struct intel_raid_disk *disk, off_t sectors)
 346 {
 347
 348         disk->sectors = sectors & 0xffffffff;
 349         disk->sectors_hi = sectors >> 32;
 350 }
 351
 352 static off_t
 353 intel_get_vol_curr_migr_unit(struct intel_raid_vol *vol)
 354 {
 355         off_t curr_migr_unit = (off_t)vol->curr_migr_unit_hi << 32;
 356
 357         curr_migr_unit += vol->curr_migr_unit;
 358         return (curr_migr_unit);
 359 }
 360
 361 static void
 362 intel_set_vol_curr_migr_unit(struct intel_raid_vol *vol, off_t curr_migr_unit)
 363 {
 364
 365         vol->curr_migr_unit = curr_migr_unit & 0xffffffff;
 366         vol->curr_migr_unit_hi = curr_migr_unit >> 32;
 367 }
 368
 369 static void
 370 g_raid_md_intel_print(struct intel_raid_conf *meta)
 371 {
 372         struct intel_raid_vol *mvol;
 373         struct intel_raid_map *mmap;
 374         int i, j, k;
 375
 376         if (g_raid_debug < 1)
 377                 return;
 378
 379         printf("********* ATA Intel MatrixRAID Metadata *********\n");
 380         printf("intel_id            <%.24s>\n", meta->intel_id);
 381         printf("version             <%.6s>\n", meta->version);
 382         printf("checksum            0x%08x\n", meta->checksum);
 383         printf("config_size         0x%08x\n", meta->config_size);
 384         printf("config_id           0x%08x\n", meta->config_id);
 385         printf("generation          0x%08x\n", meta->generation);
 386         printf("error_log_size      %d\n", meta->error_log_size);
 387         printf("attributes          0x%08x\n", meta->attributes);
 388         printf("total_disks         %u\n", meta->total_disks);
 389         printf("total_volumes       %u\n", meta->total_volumes);
 390         printf("error_log_pos       %u\n", meta->error_log_pos);
 391         printf("cache_size          %u\n", meta->cache_size);
 392         printf("orig_config_id      0x%08x\n", meta->orig_config_id);
 393         printf("pwr_cycle_count     %u\n", meta->pwr_cycle_count);
 394         printf("bbm_log_size        %u\n", meta->bbm_log_size);
 395         printf("DISK#   serial disk_sectors disk_sectors_hi disk_id flags owner\n");
 396         for (i = 0; i < meta->total_disks; i++ ) {
 397                 printf("    %d   <%.16s> %u %u 0x%08x 0x%08x %08x\n", i,
 398                     meta->disk[i].serial, meta->disk[i].sectors,
 399                     meta->disk[i].sectors_hi, meta->disk[i].id,
 400                     meta->disk[i].flags, meta->disk[i].owner_cfg_num);
 401         }
 402         for (i = 0; i < meta->total_volumes; i++) {
 403                 mvol = intel_get_volume(meta, i);
 404                 printf(" ****** Volume %d ******\n", i);
 405                 printf(" name               %.16s\n", mvol->name);
 406                 printf(" total_sectors      %ju\n", mvol->total_sectors);
 407                 printf(" state              0x%08x\n", mvol->state);
 408                 printf(" reserved           %u\n", mvol->reserved);
 409                 printf(" migr_priority      %u\n", mvol->migr_priority);
 410                 printf(" num_sub_vols       %u\n", mvol->num_sub_vols);
 411                 printf(" tid                %u\n", mvol->tid);
 412                 printf(" cng_master_disk    %u\n", mvol->cng_master_disk);
 413                 printf(" cache_policy       %u\n", mvol->cache_policy);
 414                 printf(" cng_state          %u\n", mvol->cng_state);
 415                 printf(" cng_sub_state      %u\n", mvol->cng_sub_state);
 416                 printf(" curr_migr_unit     %u\n", mvol->curr_migr_unit);
 417                 printf(" curr_migr_unit_hi  %u\n", mvol->curr_migr_unit_hi);
 418                 printf(" checkpoint_id      %u\n", mvol->checkpoint_id);
 419                 printf(" migr_state         %u\n", mvol->migr_state);
 420                 printf(" migr_type          %u\n", mvol->migr_type);
 421                 printf(" dirty              %u\n", mvol->dirty);
 422                 printf(" fs_state           %u\n", mvol->fs_state);
 423                 printf(" verify_errors      %u\n", mvol->verify_errors);
 424                 printf(" bad_blocks         %u\n", mvol->bad_blocks);
 425
 426                 for (j = 0; j < (mvol->migr_state ? 2 : 1); j++) {
 427                         printf("  *** Map %d ***\n", j);
 428                         mmap = intel_get_map(mvol, j);
 429                         printf("  offset            %u\n", mmap->offset);
 430                         printf("  offset_hi         %u\n", mmap->offset_hi);
 431                         printf("  disk_sectors      %u\n", mmap->disk_sectors);
 432                         printf("  disk_sectors_hi   %u\n", mmap->disk_sectors_hi);
 433                         printf("  stripe_count      %u\n", mmap->stripe_count);
 434                         printf("  stripe_count_hi   %u\n", mmap->stripe_count_hi);
 435                         printf("  strip_sectors     %u\n", mmap->strip_sectors);
 436                         printf("  status            %u\n", mmap->status);
 437                         printf("  type              %u\n", mmap->type);
 438                         printf("  total_disks       %u\n", mmap->total_disks);
 439                         printf("  total_domains     %u\n", mmap->total_domains);
 440                         printf("  failed_disk_num   %u\n", mmap->failed_disk_num);
 441                         printf("  ddf               %u\n", mmap->ddf);
 442                         printf("  disk_idx         ");
 443                         for (k = 0; k < mmap->total_disks; k++)
 444                                 printf(" 0x%08x", mmap->disk_idx[k]);
 445                         printf("\n");
 446                 }
 447         }
 448         printf("=================================================\n");
 449 }
 450
 451 static struct intel_raid_conf *
 452 intel_meta_copy(struct intel_raid_conf *meta)
 453 {
 454         struct intel_raid_conf *nmeta;
 455
 456         nmeta = malloc(meta->config_size, M_MD_INTEL, M_WAITOK);
 457         memcpy(nmeta, meta, meta->config_size);
 458         return (nmeta);
 459 }
 460
 461 static int
 462 intel_meta_find_disk(struct intel_raid_conf *meta, char *serial)
 463 {
 464         int pos;
 465
 466         for (pos = 0; pos < meta->total_disks; pos++) {
 467                 if (strncmp(meta->disk[pos].serial,
 468                     serial, INTEL_SERIAL_LEN) == 0)
 469                         return (pos);
 470         }
 471         return (-1);
 472 }
 473
 474 static struct intel_raid_conf *
 475 intel_meta_read(struct g_consumer *cp)
 476 {
 477         struct g_provider *pp;
 478         struct intel_raid_conf *meta;
 479         struct intel_raid_vol *mvol;
 480         struct intel_raid_map *mmap, *mmap1;
 481         char *buf;
 482         int error, i, j, k, left, size;
 483         uint32_t checksum, *ptr;
 484
 485         pp = cp->provider;
 486
 487         /* Read the anchor sector. */
 488         buf = g_read_data(cp,
 489             pp->mediasize - pp->sectorsize * 2, pp->sectorsize, &error);
 490         if (buf == NULL) {
 491                 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
 492                     pp->name, error);
 493                 return (NULL);
 494         }
 495         meta = (struct intel_raid_conf *)buf;
 496
 497         /* Check if this is an Intel RAID struct */
 498         if (strncmp(meta->intel_id, INTEL_MAGIC, strlen(INTEL_MAGIC))) {
 499                 G_RAID_DEBUG(1, "Intel signature check failed on %s", pp->name);
 500                 g_free(buf);
 501                 return (NULL);
 502         }
 503         if (meta->config_size > 65536 ||
 504             meta->config_size < sizeof(struct intel_raid_conf)) {
 505                 G_RAID_DEBUG(1, "Intel metadata size looks wrong: %d",
 506                     meta->config_size);
 507                 g_free(buf);
 508                 return (NULL);
 509         }
 510         size = meta->config_size;
 511         meta = malloc(size, M_MD_INTEL, M_WAITOK);
 512         memcpy(meta, buf, min(size, pp->sectorsize));
 513         g_free(buf);
 514
 515         /* Read all the rest, if needed. */
 516         if (meta->config_size > pp->sectorsize) {
 517                 left = (meta->config_size - 1) / pp->sectorsize;
 518                 buf = g_read_data(cp,
 519                     pp->mediasize - pp->sectorsize * (2 + left),
 520                     pp->sectorsize * left, &error);
 521                 if (buf == NULL) {
 522                         G_RAID_DEBUG(1, "Cannot read remaining metadata"
 523                             " part from %s (error=%d).",
 524                             pp->name, error);
 525                         free(meta, M_MD_INTEL);
 526                         return (NULL);
 527                 }
 528                 memcpy(((char *)meta) + pp->sectorsize, buf,
 529                     pp->sectorsize * left);
 530                 g_free(buf);
 531         }
 532
 533         /* Check metadata checksum. */
 534         for (checksum = 0, ptr = (uint32_t *)meta, i = 0;
 535             i < (meta->config_size / sizeof(uint32_t)); i++) {
 536                 checksum += *ptr++;
 537         }
 538         checksum -= meta->checksum;
 539         if (checksum != meta->checksum) {
 540                 G_RAID_DEBUG(1, "Intel checksum check failed on %s", pp->name);
 541                 free(meta, M_MD_INTEL);
 542                 return (NULL);
 543         }
 544
 545         /* Validate metadata size. */
 546         size = sizeof(struct intel_raid_conf) +
 547             sizeof(struct intel_raid_disk) * (meta->total_disks - 1) +
 548             sizeof(struct intel_raid_vol) * meta->total_volumes;
 549         if (size > meta->config_size) {
 550 badsize:
 551                 G_RAID_DEBUG(1, "Intel metadata size incorrect %d < %d",
 552                     meta->config_size, size);
 553                 free(meta, M_MD_INTEL);
 554                 return (NULL);
 555         }
 556         for (i = 0; i < meta->total_volumes; i++) {
 557                 mvol = intel_get_volume(meta, i);
 558                 mmap = intel_get_map(mvol, 0);
 559                 size += 4 * (mmap->total_disks - 1);
 560                 if (size > meta->config_size)
 561                         goto badsize;
 562                 if (mvol->migr_state) {
 563                         size += sizeof(struct intel_raid_map);
 564                         if (size > meta->config_size)
 565                                 goto badsize;
 566                         mmap = intel_get_map(mvol, 1);
 567                         size += 4 * (mmap->total_disks - 1);
 568                         if (size > meta->config_size)
 569                                 goto badsize;
 570                 }
 571         }
 572
 573         g_raid_md_intel_print(meta);
 574
 575         if (strncmp(meta->version, INTEL_VERSION_1300, 6) > 0) {
 576                 G_RAID_DEBUG(1, "Intel unsupported version: '%.6s'",
 577                     meta->version);
 578                 free(meta, M_MD_INTEL);
 579                 return (NULL);
 580         }
 581
 582         if (strncmp(meta->version, INTEL_VERSION_1300, 6) >= 0 &&
 583             (meta->attributes & ~INTEL_ATTR_SUPPORTED) != 0) {
 584                 G_RAID_DEBUG(1, "Intel unsupported attributes: 0x%08x",
 585                     meta->attributes & ~INTEL_ATTR_SUPPORTED);
 586                 free(meta, M_MD_INTEL);
 587                 return (NULL);
 588         }
 589
 590         /* Validate disk indexes. */
 591         for (i = 0; i < meta->total_volumes; i++) {
 592                 mvol = intel_get_volume(meta, i);
 593                 for (j = 0; j < (mvol->migr_state ? 2 : 1); j++) {
 594                         mmap = intel_get_map(mvol, j);
 595                         for (k = 0; k < mmap->total_disks; k++) {
 596                                 if ((mmap->disk_idx[k] & INTEL_DI_IDX) >
 597                                     meta->total_disks) {
 598                                         G_RAID_DEBUG(1, "Intel metadata disk"
 599                                             " index %d too big (>%d)",
 600                                             mmap->disk_idx[k] & INTEL_DI_IDX,
 601                                             meta->total_disks);
 602                                         free(meta, M_MD_INTEL);
 603                                         return (NULL);
 604                                 }
 605                         }
 606                 }
 607         }
 608
 609         /* Validate migration types. */
 610         for (i = 0; i < meta->total_volumes; i++) {
 611                 mvol = intel_get_volume(meta, i);
 612                 /* Deny unknown migration types. */
 613                 if (mvol->migr_state &&
 614                     mvol->migr_type != INTEL_MT_INIT &&
 615                     mvol->migr_type != INTEL_MT_REBUILD &&
 616                     mvol->migr_type != INTEL_MT_VERIFY &&
 617                     mvol->migr_type != INTEL_MT_GEN_MIGR &&
 618                     mvol->migr_type != INTEL_MT_REPAIR) {
 619                         G_RAID_DEBUG(1, "Intel metadata has unsupported"
 620                             " migration type %d", mvol->migr_type);
 621                         free(meta, M_MD_INTEL);
 622                         return (NULL);
 623                 }
 624                 /* Deny general migrations except SINGLE->RAID1. */
 625                 if (mvol->migr_state &&
 626                     mvol->migr_type == INTEL_MT_GEN_MIGR) {
 627                         mmap = intel_get_map(mvol, 0);
 628                         mmap1 = intel_get_map(mvol, 1);
 629                         if (mmap1->total_disks != 1 ||
 630                             mmap->type != INTEL_T_RAID1 ||
 631                             mmap->total_disks != 2 ||
 632                             mmap->offset != mmap1->offset ||
 633                             mmap->disk_sectors != mmap1->disk_sectors ||
 634                             mmap->total_domains != mmap->total_disks ||
 635                             mmap->offset_hi != mmap1->offset_hi ||
 636                             mmap->disk_sectors_hi != mmap1->disk_sectors_hi ||
 637                             (mmap->disk_idx[0] != mmap1->disk_idx[0] &&
 638                              mmap->disk_idx[0] != mmap1->disk_idx[1])) {
 639                                 G_RAID_DEBUG(1, "Intel metadata has unsupported"
 640                                     " variant of general migration");
 641                                 free(meta, M_MD_INTEL);
 642                                 return (NULL);
 643                         }
 644                 }
 645         }
 646
 647         return (meta);
 648 }
 649
 650 static int
 651 intel_meta_write(struct g_consumer *cp, struct intel_raid_conf *meta)
 652 {
 653         struct g_provider *pp;
 654         char *buf;
 655         int error, i, sectors;
 656         uint32_t checksum, *ptr;
 657
 658         pp = cp->provider;
 659
 660         /* Recalculate checksum for case if metadata were changed. */
 661         meta->checksum = 0;
 662         for (checksum = 0, ptr = (uint32_t *)meta, i = 0;
 663             i < (meta->config_size / sizeof(uint32_t)); i++) {
 664                 checksum += *ptr++;
 665         }
 666         meta->checksum = checksum;
 667
 668         /* Create and fill buffer. */
 669         sectors = (meta->config_size + pp->sectorsize - 1) / pp->sectorsize;
 670         buf = malloc(sectors * pp->sectorsize, M_MD_INTEL, M_WAITOK | M_ZERO);
 671         if (sectors > 1) {
 672                 memcpy(buf, ((char *)meta) + pp->sectorsize,
 673                     (sectors - 1) * pp->sectorsize);
 674         }
 675         memcpy(buf + (sectors - 1) * pp->sectorsize, meta, pp->sectorsize);
 676
 677         error = g_write_data(cp,
 678             pp->mediasize - pp->sectorsize * (1 + sectors),
 679             buf, pp->sectorsize * sectors);
 680         if (error != 0) {
 681                 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
 682                     pp->name, error);
 683         }
 684
 685         free(buf, M_MD_INTEL);
 686         return (error);
 687 }
 688
 689 static int
 690 intel_meta_erase(struct g_consumer *cp)
 691 {
 692         struct g_provider *pp;
 693         char *buf;
 694         int error;
 695
 696         pp = cp->provider;
 697         buf = malloc(pp->sectorsize, M_MD_INTEL, M_WAITOK | M_ZERO);
 698         error = g_write_data(cp,
 699             pp->mediasize - 2 * pp->sectorsize,
 700             buf, pp->sectorsize);
 701         if (error != 0) {
 702                 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
 703                     pp->name, error);
 704         }
 705         free(buf, M_MD_INTEL);
 706         return (error);
 707 }
 708
 709 static int
 710 intel_meta_write_spare(struct g_consumer *cp, struct intel_raid_disk *d)
 711 {
 712         struct intel_raid_conf *meta;
 713         int error;
 714
 715         /* Fill anchor and single disk. */
 716         meta = malloc(INTEL_MAX_MD_SIZE(1), M_MD_INTEL, M_WAITOK | M_ZERO);
 717         memcpy(&meta->intel_id[0], INTEL_MAGIC, sizeof(INTEL_MAGIC) - 1);
 718         memcpy(&meta->version[0], INTEL_VERSION_1000,
 719             sizeof(INTEL_VERSION_1000) - 1);
 720         meta->config_size = INTEL_MAX_MD_SIZE(1);
 721         meta->config_id = meta->orig_config_id = arc4random();
 722         meta->generation = 1;
 723         meta->total_disks = 1;
 724         meta->disk[0] = *d;
 725         error = intel_meta_write(cp, meta);
 726         free(meta, M_MD_INTEL);
 727         return (error);
 728 }
 729
 730 static struct g_raid_disk *
 731 g_raid_md_intel_get_disk(struct g_raid_softc *sc, int id)
 732 {
 733         struct g_raid_disk      *disk;
 734         struct g_raid_md_intel_perdisk *pd;
 735
 736         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
 737                 pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
 738                 if (pd->pd_disk_pos == id)
 739                         break;
 740         }
 741         return (disk);
 742 }
 743
 744 static int
 745 g_raid_md_intel_supported(int level, int qual, int disks, int force)
 746 {
 747
 748         switch (level) {
 749         case G_RAID_VOLUME_RL_RAID0:
 750                 if (disks < 1)
 751                         return (0);
 752                 if (!force && (disks < 2 || disks > 6))
 753                         return (0);
 754                 break;
 755         case G_RAID_VOLUME_RL_RAID1:
 756                 if (disks < 1)
 757                         return (0);
 758                 if (!force && (disks != 2))
 759                         return (0);
 760                 break;
 761         case G_RAID_VOLUME_RL_RAID1E:
 762                 if (disks < 2)
 763                         return (0);
 764                 if (!force && (disks != 4))
 765                         return (0);
 766                 break;
 767         case G_RAID_VOLUME_RL_RAID5:
 768                 if (disks < 3)
 769                         return (0);
 770                 if (!force && disks > 6)
 771                         return (0);
 772                 if (qual != G_RAID_VOLUME_RLQ_R5LA)
 773                         return (0);
 774                 break;
 775         default:
 776                 return (0);
 777         }
 778         if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE)
 779                 return (0);
 780         return (1);
 781 }
 782
 783 static struct g_raid_volume *
 784 g_raid_md_intel_get_volume(struct g_raid_softc *sc, int id)
 785 {
 786         struct g_raid_volume    *mvol;
 787         struct g_raid_md_intel_pervolume *pv;
 788
 789         TAILQ_FOREACH(mvol, &sc->sc_volumes, v_next) {
 790                 pv = mvol->v_md_data;
 791                 if (pv->pv_volume_pos == id)
 792                         break;
 793         }
 794         return (mvol);
 795 }
 796
 797 static int
 798 g_raid_md_intel_start_disk(struct g_raid_disk *disk)
 799 {
 800         struct g_raid_softc *sc;
 801         struct g_raid_subdisk *sd, *tmpsd;
 802         struct g_raid_disk *olddisk, *tmpdisk;
 803         struct g_raid_md_object *md;
 804         struct g_raid_md_intel_object *mdi;
 805         struct g_raid_md_intel_pervolume *pv;
 806         struct g_raid_md_intel_perdisk *pd, *oldpd;
 807         struct intel_raid_conf *meta;
 808         struct intel_raid_vol *mvol;
 809         struct intel_raid_map *mmap0, *mmap1;
 810         int disk_pos, resurrection = 0, migr_global, i;
 811
 812         sc = disk->d_softc;
 813         md = sc->sc_md;
 814         mdi = (struct g_raid_md_intel_object *)md;
 815         meta = mdi->mdio_meta;
 816         pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
 817         olddisk = NULL;
 818
 819         /* Find disk position in metadata by it's serial. */
 820         disk_pos = intel_meta_find_disk(meta, pd->pd_disk_meta.serial);
 821         if (disk_pos < 0) {
 822                 G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk");
 823                 /* Failed stale disk is useless for us. */
 824                 if ((pd->pd_disk_meta.flags & INTEL_F_FAILED) &&
 825                     !(pd->pd_disk_meta.flags & INTEL_F_DISABLED)) {
 826                         g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED);
 827                         return (0);
 828                 }
 829                 /* If we are in the start process, that's all for now. */
 830                 if (!mdi->mdio_started)
 831                         goto nofit;
 832                 /*
 833                  * If we have already started - try to get use of the disk.
 834                  * Try to replace OFFLINE disks first, then FAILED.
 835                  */
 836                 TAILQ_FOREACH(tmpdisk, &sc->sc_disks, d_next) {
 837                         if (tmpdisk->d_state != G_RAID_DISK_S_OFFLINE &&
 838                             tmpdisk->d_state != G_RAID_DISK_S_FAILED)
 839                                 continue;
 840                         /* Make sure this disk is big enough. */
 841                         TAILQ_FOREACH(sd, &tmpdisk->d_subdisks, sd_next) {
 842                                 off_t disk_sectors =
 843                                     intel_get_disk_sectors(&pd->pd_disk_meta);
 844
 845                                 if (sd->sd_offset + sd->sd_size + 4096 >
 846                                     disk_sectors * 512) {
 847                                         G_RAID_DEBUG1(1, sc,
 848                                             "Disk too small (%llu < %llu)",
 849                                             (unsigned long long)
 850                                             disk_sectors * 512,
 851                                             (unsigned long long)
 852                                             sd->sd_offset + sd->sd_size + 4096);
 853                                         break;
 854                                 }
 855                         }
 856                         if (sd != NULL)
 857                                 continue;
 858                         if (tmpdisk->d_state == G_RAID_DISK_S_OFFLINE) {
 859                                 olddisk = tmpdisk;
 860                                 break;
 861                         } else if (olddisk == NULL)
 862                                 olddisk = tmpdisk;
 863                 }
 864                 if (olddisk == NULL) {
 865 nofit:
 866                         if (pd->pd_disk_meta.flags & INTEL_F_SPARE) {
 867                                 g_raid_change_disk_state(disk,
 868                                     G_RAID_DISK_S_SPARE);
 869                                 return (1);
 870                         } else {
 871                                 g_raid_change_disk_state(disk,
 872                                     G_RAID_DISK_S_STALE);
 873                                 return (0);
 874                         }
 875                 }
 876                 oldpd = (struct g_raid_md_intel_perdisk *)olddisk->d_md_data;
 877                 disk_pos = oldpd->pd_disk_pos;
 878                 resurrection = 1;
 879         }
 880
 881         if (olddisk == NULL) {
 882                 /* Find placeholder by position. */
 883                 olddisk = g_raid_md_intel_get_disk(sc, disk_pos);
 884                 if (olddisk == NULL)
 885                         panic("No disk at position %d!", disk_pos);
 886                 if (olddisk->d_state != G_RAID_DISK_S_OFFLINE) {
 887                         G_RAID_DEBUG1(1, sc, "More then one disk for pos %d",
 888                             disk_pos);
 889                         g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE);
 890                         return (0);
 891                 }
 892                 oldpd = (struct g_raid_md_intel_perdisk *)olddisk->d_md_data;
 893         }
 894
 895         /* Replace failed disk or placeholder with new disk. */
 896         TAILQ_FOREACH_SAFE(sd, &olddisk->d_subdisks, sd_next, tmpsd) {
 897                 TAILQ_REMOVE(&olddisk->d_subdisks, sd, sd_next);
 898                 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
 899                 sd->sd_disk = disk;
 900         }
 901         oldpd->pd_disk_pos = -2;
 902         pd->pd_disk_pos = disk_pos;
 903
 904         /* If it was placeholder -- destroy it. */
 905         if (olddisk->d_state == G_RAID_DISK_S_OFFLINE) {
 906                 g_raid_destroy_disk(olddisk);
 907         } else {
 908                 /* Otherwise, make it STALE_FAILED. */
 909                 g_raid_change_disk_state(olddisk, G_RAID_DISK_S_STALE_FAILED);
 910                 /* Update global metadata just in case. */
 911                 memcpy(&meta->disk[disk_pos], &pd->pd_disk_meta,
 912                     sizeof(struct intel_raid_disk));
 913         }
 914
 915         /* Welcome the new disk. */
 916         if ((meta->disk[disk_pos].flags & INTEL_F_DISABLED) &&
 917             !(pd->pd_disk_meta.flags & INTEL_F_SPARE))
 918                 g_raid_change_disk_state(disk, G_RAID_DISK_S_DISABLED);
 919         else if (resurrection)
 920                 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
 921         else if (meta->disk[disk_pos].flags & INTEL_F_FAILED)
 922                 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
 923         else if (meta->disk[disk_pos].flags & INTEL_F_SPARE)
 924                 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
 925         else
 926                 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
 927         TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
 928                 pv = sd->sd_volume->v_md_data;
 929                 mvol = intel_get_volume(meta, pv->pv_volume_pos);
 930                 mmap0 = intel_get_map(mvol, 0);
 931                 if (mvol->migr_state)
 932                         mmap1 = intel_get_map(mvol, 1);
 933                 else
 934                         mmap1 = mmap0;
 935
 936                 migr_global = 1;
 937                 for (i = 0; i < mmap0->total_disks; i++) {
 938                         if ((mmap0->disk_idx[i] & INTEL_DI_RBLD) == 0 &&
 939                             (mmap1->disk_idx[i] & INTEL_DI_RBLD) != 0)
 940                                 migr_global = 0;
 941                 }
 942
 943                 if ((meta->disk[disk_pos].flags & INTEL_F_DISABLED) &&
 944                     !(pd->pd_disk_meta.flags & INTEL_F_SPARE)) {
 945                         /* Disabled disk, useless. */
 946                         g_raid_change_subdisk_state(sd,
 947                             G_RAID_SUBDISK_S_NONE);
 948                 } else if (resurrection) {
 949                         /* Stale disk, almost same as new. */
 950                         g_raid_change_subdisk_state(sd,
 951                             G_RAID_SUBDISK_S_NEW);
 952                 } else if (meta->disk[disk_pos].flags & INTEL_F_FAILED) {
 953                         /* Failed disk, almost useless. */
 954                         g_raid_change_subdisk_state(sd,
 955                             G_RAID_SUBDISK_S_FAILED);
 956                 } else if (mvol->migr_state == 0) {
 957                         if (mmap0->status == INTEL_S_UNINITIALIZED &&
 958                             (!pv->pv_cng || pv->pv_cng_master_disk != disk_pos)) {
 959                                 /* Freshly created uninitialized volume. */
 960                                 g_raid_change_subdisk_state(sd,
 961                                     G_RAID_SUBDISK_S_UNINITIALIZED);
 962                         } else if (mmap0->disk_idx[sd->sd_pos] & INTEL_DI_RBLD) {
 963                                 /* Freshly inserted disk. */
 964                                 g_raid_change_subdisk_state(sd,
 965                                     G_RAID_SUBDISK_S_NEW);
 966                         } else if (mvol->dirty && (!pv->pv_cng ||
 967                             pv->pv_cng_master_disk != disk_pos)) {
 968                                 /* Dirty volume (unclean shutdown). */
 969                                 g_raid_change_subdisk_state(sd,
 970                                     G_RAID_SUBDISK_S_STALE);
 971                         } else {
 972                                 /* Up to date disk. */
 973                                 g_raid_change_subdisk_state(sd,
 974                                     G_RAID_SUBDISK_S_ACTIVE);
 975                         }
 976                 } else if (mvol->migr_type == INTEL_MT_INIT ||
 977                            mvol->migr_type == INTEL_MT_REBUILD) {
 978                         if (mmap0->disk_idx[sd->sd_pos] & INTEL_DI_RBLD) {
 979                                 /* Freshly inserted disk. */
 980                                 g_raid_change_subdisk_state(sd,
 981                                     G_RAID_SUBDISK_S_NEW);
 982                         } else if (mmap1->disk_idx[sd->sd_pos] & INTEL_DI_RBLD) {
 983                                 /* Rebuilding disk. */
 984                                 g_raid_change_subdisk_state(sd,
 985                                     G_RAID_SUBDISK_S_REBUILD);
 986                                 if (mvol->dirty) {
 987                                         sd->sd_rebuild_pos = 0;
 988                                 } else {
 989                                         sd->sd_rebuild_pos =
 990                                             intel_get_vol_curr_migr_unit(mvol) *
 991                                             sd->sd_volume->v_strip_size *
 992                                             mmap0->total_domains;
 993                                 }
 994                         } else if (mvol->migr_type == INTEL_MT_INIT &&
 995                             migr_global) {
 996                                 /* Freshly created uninitialized volume. */
 997                                 g_raid_change_subdisk_state(sd,
 998                                     G_RAID_SUBDISK_S_UNINITIALIZED);
 999                         } else if (mvol->dirty && (!pv->pv_cng ||
1000                             pv->pv_cng_master_disk != disk_pos)) {
1001                                 /* Dirty volume (unclean shutdown). */
1002                                 g_raid_change_subdisk_state(sd,
1003                                     G_RAID_SUBDISK_S_STALE);
1004                         } else {
1005                                 /* Up to date disk. */
1006                                 g_raid_change_subdisk_state(sd,
1007                                     G_RAID_SUBDISK_S_ACTIVE);
1008                         }
1009                 } else if (mvol->migr_type == INTEL_MT_VERIFY ||
1010                            mvol->migr_type == INTEL_MT_REPAIR) {
1011                         if (mmap0->disk_idx[sd->sd_pos] & INTEL_DI_RBLD) {
1012                                 /* Freshly inserted disk. */
1013                                 g_raid_change_subdisk_state(sd,
1014                                     G_RAID_SUBDISK_S_NEW);
1015                         } else if ((mmap1->disk_idx[sd->sd_pos] & INTEL_DI_RBLD) ||
1016                             migr_global) {
1017                                 /* Resyncing disk. */
1018                                 g_raid_change_subdisk_state(sd,
1019                                     G_RAID_SUBDISK_S_RESYNC);
1020                                 if (mvol->dirty) {
1021                                         sd->sd_rebuild_pos = 0;
1022                                 } else {
1023                                         sd->sd_rebuild_pos =
1024                                             intel_get_vol_curr_migr_unit(mvol) *
1025                                             sd->sd_volume->v_strip_size *
1026                                             mmap0->total_domains;
1027                                 }
1028                         } else if (mvol->dirty) {
1029                                 /* Dirty volume (unclean shutdown). */
1030                                 g_raid_change_subdisk_state(sd,
1031                                     G_RAID_SUBDISK_S_STALE);
1032                         } else {
1033                                 /* Up to date disk. */
1034                                 g_raid_change_subdisk_state(sd,
1035                                     G_RAID_SUBDISK_S_ACTIVE);
1036                         }
1037                 } else if (mvol->migr_type == INTEL_MT_GEN_MIGR) {
1038                         if ((mmap1->disk_idx[0] & INTEL_DI_IDX) != disk_pos) {
1039                                 /* Freshly inserted disk. */
1040                                 g_raid_change_subdisk_state(sd,
1041                                     G_RAID_SUBDISK_S_NEW);
1042                         } else {
1043                                 /* Up to date disk. */
1044                                 g_raid_change_subdisk_state(sd,
1045                                     G_RAID_SUBDISK_S_ACTIVE);
1046                         }
1047                 }
1048                 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
1049                     G_RAID_EVENT_SUBDISK);
1050         }
1051
1052         /* Update status of our need for spare. */
1053         if (mdi->mdio_started) {
1054                 mdi->mdio_incomplete =
1055                     (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) +
1056                      g_raid_ndisks(sc, G_RAID_DISK_S_DISABLED) <
1057                      meta->total_disks);
1058         }
1059
1060         return (resurrection);
1061 }
1062
1063 static void
1064 g_disk_md_intel_retaste(void *arg, int pending)
1065 {
1066
1067         G_RAID_DEBUG(1, "Array is not complete, trying to retaste.");
1068         g_retaste(&g_raid_class);
1069         free(arg, M_MD_INTEL);
1070 }
1071
1072 static void
1073 g_raid_md_intel_refill(struct g_raid_softc *sc)
1074 {
1075         struct g_raid_md_object *md;
1076         struct g_raid_md_intel_object *mdi;
1077         struct intel_raid_conf *meta;
1078         struct g_raid_disk *disk;
1079         struct task *task;
1080         int update, na;
1081
1082         md = sc->sc_md;
1083         mdi = (struct g_raid_md_intel_object *)md;
1084         meta = mdi->mdio_meta;
1085         update = 0;
1086         do {
1087                 /* Make sure we miss anything. */
1088                 na = g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) +
1089                     g_raid_ndisks(sc, G_RAID_DISK_S_DISABLED);
1090                 if (na == meta->total_disks)
1091                         break;
1092
1093                 G_RAID_DEBUG1(1, md->mdo_softc,
1094                     "Array is not complete (%d of %d), "
1095                     "trying to refill.", na, meta->total_disks);
1096
1097                 /* Try to get use some of STALE disks. */
1098                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1099                         if (disk->d_state == G_RAID_DISK_S_STALE) {
1100                                 update += g_raid_md_intel_start_disk(disk);
1101                                 if (disk->d_state == G_RAID_DISK_S_ACTIVE ||
1102                                     disk->d_state == G_RAID_DISK_S_DISABLED)
1103                                         break;
1104                         }
1105                 }
1106                 if (disk != NULL)
1107                         continue;
1108
1109                 /* Try to get use some of SPARE disks. */
1110                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1111                         if (disk->d_state == G_RAID_DISK_S_SPARE) {
1112                                 update += g_raid_md_intel_start_disk(disk);
1113                                 if (disk->d_state == G_RAID_DISK_S_ACTIVE)
1114                                         break;
1115                         }
1116                 }
1117         } while (disk != NULL);
1118
1119         /* Write new metadata if we changed something. */
1120         if (update) {
1121                 g_raid_md_write_intel(md, NULL, NULL, NULL);
1122                 meta = mdi->mdio_meta;
1123         }
1124
1125         /* Update status of our need for spare. */
1126         mdi->mdio_incomplete = (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) +
1127             g_raid_ndisks(sc, G_RAID_DISK_S_DISABLED) < meta->total_disks);
1128
1129         /* Request retaste hoping to find spare. */
1130         if (mdi->mdio_incomplete) {
1131                 task = malloc(sizeof(struct task),
1132                     M_MD_INTEL, M_WAITOK | M_ZERO);
1133                 TASK_INIT(task, 0, g_disk_md_intel_retaste, task);
1134                 taskqueue_enqueue(taskqueue_swi, task);
1135         }
1136 }
1137
1138 static void
1139 g_raid_md_intel_start(struct g_raid_softc *sc)
1140 {
1141         struct g_raid_md_object *md;
1142         struct g_raid_md_intel_object *mdi;
1143         struct g_raid_md_intel_pervolume *pv;
1144         struct g_raid_md_intel_perdisk *pd;
1145         struct intel_raid_conf *meta;
1146         struct intel_raid_vol *mvol;
1147         struct intel_raid_map *mmap;
1148         struct g_raid_volume *vol;
1149         struct g_raid_subdisk *sd;
1150         struct g_raid_disk *disk;
1151         int i, j, disk_pos;
1152
1153         md = sc->sc_md;
1154         mdi = (struct g_raid_md_intel_object *)md;
1155         meta = mdi->mdio_meta;
1156
1157         /* Create volumes and subdisks. */
1158         for (i = 0; i < meta->total_volumes; i++) {
1159                 mvol = intel_get_volume(meta, i);
1160                 mmap = intel_get_map(mvol, 0);
1161                 vol = g_raid_create_volume(sc, mvol->name, mvol->tid - 1);
1162                 pv = malloc(sizeof(*pv), M_MD_INTEL, M_WAITOK | M_ZERO);
1163                 pv->pv_volume_pos = i;
1164                 pv->pv_cng = (mvol->state & INTEL_ST_CLONE_N_GO) != 0;
1165                 pv->pv_cng_man_sync = (mvol->state & INTEL_ST_CLONE_MAN_SYNC) != 0;
1166                 if (mvol->cng_master_disk < mmap->total_disks)
1167                         pv->pv_cng_master_disk = mvol->cng_master_disk;
1168                 vol->v_md_data = pv;
1169                 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
1170                 if (mmap->type == INTEL_T_RAID0)
1171                         vol->v_raid_level = G_RAID_VOLUME_RL_RAID0;
1172                 else if (mmap->type == INTEL_T_RAID1 &&
1173                     mmap->total_domains >= 2 &&
1174                     mmap->total_domains <= mmap->total_disks) {
1175                         /* Assume total_domains is correct. */
1176                         if (mmap->total_domains == mmap->total_disks)
1177                                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1;
1178                         else
1179                                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
1180                 } else if (mmap->type == INTEL_T_RAID1) {
1181                         /* total_domains looks wrong. */
1182                         if (mmap->total_disks <= 2)
1183                                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1;
1184                         else
1185                                 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
1186                 } else if (mmap->type == INTEL_T_RAID5) {
1187                         vol->v_raid_level = G_RAID_VOLUME_RL_RAID5;
1188                         vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LA;
1189                 } else
1190                         vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN;
1191                 vol->v_strip_size = (u_int)mmap->strip_sectors * 512; //ZZZ
1192                 vol->v_disks_count = mmap->total_disks;
1193                 vol->v_mediasize = (off_t)mvol->total_sectors * 512; //ZZZ
1194                 vol->v_sectorsize = 512; //ZZZ
1195                 for (j = 0; j < vol->v_disks_count; j++) {
1196                         sd = &vol->v_subdisks[j];
1197                         sd->sd_offset = intel_get_map_offset(mmap) * 512; //ZZZ
1198                         sd->sd_size = intel_get_map_disk_sectors(mmap) * 512; //ZZZ
1199                 }
1200                 g_raid_start_volume(vol);
1201         }
1202
1203         /* Create disk placeholders to store data for later writing. */
1204         for (disk_pos = 0; disk_pos < meta->total_disks; disk_pos++) {
1205                 pd = malloc(sizeof(*pd), M_MD_INTEL, M_WAITOK | M_ZERO);
1206                 pd->pd_disk_pos = disk_pos;
1207                 pd->pd_disk_meta = meta->disk[disk_pos];
1208                 disk = g_raid_create_disk(sc);
1209                 disk->d_md_data = (void *)pd;
1210                 disk->d_state = G_RAID_DISK_S_OFFLINE;
1211                 for (i = 0; i < meta->total_volumes; i++) {
1212                         mvol = intel_get_volume(meta, i);
1213                         mmap = intel_get_map(mvol, 0);
1214                         for (j = 0; j < mmap->total_disks; j++) {
1215                                 if ((mmap->disk_idx[j] & INTEL_DI_IDX) == disk_pos)
1216                                         break;
1217                         }
1218                         if (j == mmap->total_disks)
1219                                 continue;
1220                         vol = g_raid_md_intel_get_volume(sc, i);
1221                         sd = &vol->v_subdisks[j];
1222                         sd->sd_disk = disk;
1223                         TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
1224                 }
1225         }
1226
1227         /* Make all disks found till the moment take their places. */
1228         do {
1229                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1230                         if (disk->d_state == G_RAID_DISK_S_NONE) {
1231                                 g_raid_md_intel_start_disk(disk);
1232                                 break;
1233                         }
1234                 }
1235         } while (disk != NULL);
1236
1237         mdi->mdio_started = 1;
1238         G_RAID_DEBUG1(0, sc, "Array started.");
1239         g_raid_md_write_intel(md, NULL, NULL, NULL);
1240
1241         /* Pickup any STALE/SPARE disks to refill array if needed. */
1242         g_raid_md_intel_refill(sc);
1243
1244         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1245                 g_raid_event_send(vol, G_RAID_VOLUME_E_START,
1246                     G_RAID_EVENT_VOLUME);
1247         }
1248
1249         callout_stop(&mdi->mdio_start_co);
1250         G_RAID_DEBUG1(1, sc, "root_mount_rel %p", mdi->mdio_rootmount);
1251         root_mount_rel(mdi->mdio_rootmount);
1252         mdi->mdio_rootmount = NULL;
1253 }
1254
1255 static void
1256 g_raid_md_intel_new_disk(struct g_raid_disk *disk)
1257 {
1258         struct g_raid_softc *sc;
1259         struct g_raid_md_object *md;
1260         struct g_raid_md_intel_object *mdi;
1261         struct intel_raid_conf *pdmeta;
1262         struct g_raid_md_intel_perdisk *pd;
1263
1264         sc = disk->d_softc;
1265         md = sc->sc_md;
1266         mdi = (struct g_raid_md_intel_object *)md;
1267         pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
1268         pdmeta = pd->pd_meta;
1269
1270         if (mdi->mdio_started) {
1271                 if (g_raid_md_intel_start_disk(disk))
1272                         g_raid_md_write_intel(md, NULL, NULL, NULL);
1273         } else {
1274                 /* If we haven't started yet - check metadata freshness. */
1275                 if (mdi->mdio_meta == NULL ||
1276                     ((int32_t)(pdmeta->generation - mdi->mdio_generation)) > 0) {
1277                         G_RAID_DEBUG1(1, sc, "Newer disk");
1278                         if (mdi->mdio_meta != NULL)
1279                                 free(mdi->mdio_meta, M_MD_INTEL);
1280                         mdi->mdio_meta = intel_meta_copy(pdmeta);
1281                         mdi->mdio_generation = mdi->mdio_meta->generation;
1282                         mdi->mdio_disks_present = 1;
1283                 } else if (pdmeta->generation == mdi->mdio_generation) {
1284                         mdi->mdio_disks_present++;
1285                         G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)",
1286                             mdi->mdio_disks_present,
1287                             mdi->mdio_meta->total_disks);
1288                 } else {
1289                         G_RAID_DEBUG1(1, sc, "Older disk");
1290                 }
1291                 /* If we collected all needed disks - start array. */
1292                 if (mdi->mdio_disks_present == mdi->mdio_meta->total_disks)
1293                         g_raid_md_intel_start(sc);
1294         }
1295 }
1296
1297 static void
1298 g_raid_intel_go(void *arg)
1299 {
1300         struct g_raid_softc *sc;
1301         struct g_raid_md_object *md;
1302         struct g_raid_md_intel_object *mdi;
1303
1304         sc = arg;
1305         md = sc->sc_md;
1306         mdi = (struct g_raid_md_intel_object *)md;
1307         if (!mdi->mdio_started) {
1308                 G_RAID_DEBUG1(0, sc, "Force array start due to timeout.");
1309                 g_raid_event_send(sc, G_RAID_NODE_E_START, 0);
1310         }
1311 }
1312
1313 static int
1314 g_raid_md_create_intel(struct g_raid_md_object *md, struct g_class *mp,
1315     struct g_geom **gp)
1316 {
1317         struct g_raid_softc *sc;
1318         struct g_raid_md_intel_object *mdi;
1319         char name[16];
1320
1321         mdi = (struct g_raid_md_intel_object *)md;
1322         mdi->mdio_config_id = mdi->mdio_orig_config_id = arc4random();
1323         mdi->mdio_generation = 0;
1324         snprintf(name, sizeof(name), "Intel-%08x", mdi->mdio_config_id);
1325         sc = g_raid_create_node(mp, name, md);
1326         if (sc == NULL)
1327                 return (G_RAID_MD_TASTE_FAIL);
1328         md->mdo_softc = sc;
1329         *gp = sc->sc_geom;
1330         return (G_RAID_MD_TASTE_NEW);
1331 }
1332
1333 /*
1334  * Return the last N characters of the serial label.  The Linux and
1335  * ataraid(7) code always uses the last 16 characters of the label to
1336  * store into the Intel meta format.  Generalize this to N characters
1337  * since that's easy.  Labels can be up to 20 characters for SATA drives
1338  * and up 251 characters for SAS drives.  Since intel controllers don't
1339  * support SAS drives, just stick with the SATA limits for stack friendliness.
1340  */
1341 static int
1342 g_raid_md_get_label(struct g_consumer *cp, char *serial, int serlen)
1343 {
1344         char serial_buffer[24];
1345         int len, error;
1346
1347         len = sizeof(serial_buffer);
1348         error = g_io_getattr("GEOM::ident", cp, &len, serial_buffer);
1349         if (error != 0)
1350                 return (error);
1351         len = strlen(serial_buffer);
1352         if (len > serlen)
1353                 len -= serlen;
1354         else
1355                 len = 0;
1356         strncpy(serial, serial_buffer + len, serlen);
1357         return (0);
1358 }
1359
1360 static int
1361 g_raid_md_taste_intel(struct g_raid_md_object *md, struct g_class *mp,
1362                               struct g_consumer *cp, struct g_geom **gp)
1363 {
1364         struct g_consumer *rcp;
1365         struct g_provider *pp;
1366         struct g_raid_md_intel_object *mdi, *mdi1;
1367         struct g_raid_softc *sc;
1368         struct g_raid_disk *disk;
1369         struct intel_raid_conf *meta;
1370         struct g_raid_md_intel_perdisk *pd;
1371         struct g_geom *geom;
1372         int error, disk_pos, result, spare, len;
1373         char serial[INTEL_SERIAL_LEN];
1374         char name[16];
1375         uint16_t vendor;
1376
1377         G_RAID_DEBUG(1, "Tasting Intel on %s", cp->provider->name);
1378         mdi = (struct g_raid_md_intel_object *)md;
1379         pp = cp->provider;
1380
1381         /* Read metadata from device. */
1382         meta = NULL;
1383         vendor = 0xffff;
1384         disk_pos = 0;
1385         if (g_access(cp, 1, 0, 0) != 0)
1386                 return (G_RAID_MD_TASTE_FAIL);
1387         g_topology_unlock();
1388         error = g_raid_md_get_label(cp, serial, sizeof(serial));
1389         if (error != 0) {
1390                 G_RAID_DEBUG(1, "Cannot get serial number from %s (error=%d).",
1391                     pp->name, error);
1392                 goto fail2;
1393         }
1394         len = 2;
1395         if (pp->geom->rank == 1)
1396                 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor);
1397         meta = intel_meta_read(cp);
1398         g_topology_lock();
1399         g_access(cp, -1, 0, 0);
1400         if (meta == NULL) {
1401                 if (g_raid_aggressive_spare) {
1402                         if (vendor != 0x8086) {
1403                                 G_RAID_DEBUG(1,
1404                                     "Intel vendor mismatch 0x%04x != 0x8086",
1405                                     vendor);
1406                         } else {
1407                                 G_RAID_DEBUG(1,
1408                                     "No Intel metadata, forcing spare.");
1409                                 spare = 2;
1410                                 goto search;
1411                         }
1412                 }
1413                 return (G_RAID_MD_TASTE_FAIL);
1414         }
1415
1416         /* Check this disk position in obtained metadata. */
1417         disk_pos = intel_meta_find_disk(meta, serial);
1418         if (disk_pos < 0) {
1419                 G_RAID_DEBUG(1, "Intel serial '%s' not found", serial);
1420                 goto fail1;
1421         }
1422         if (intel_get_disk_sectors(&meta->disk[disk_pos]) !=
1423             (pp->mediasize / pp->sectorsize)) {
1424                 G_RAID_DEBUG(1, "Intel size mismatch %ju != %ju",
1425                     intel_get_disk_sectors(&meta->disk[disk_pos]),
1426                     (off_t)(pp->mediasize / pp->sectorsize));
1427                 goto fail1;
1428         }
1429
1430         G_RAID_DEBUG(1, "Intel disk position %d", disk_pos);
1431         spare = meta->disk[disk_pos].flags & INTEL_F_SPARE;
1432
1433 search:
1434         /* Search for matching node. */
1435         sc = NULL;
1436         mdi1 = NULL;
1437         LIST_FOREACH(geom, &mp->geom, geom) {
1438                 sc = geom->softc;
1439                 if (sc == NULL)
1440                         continue;
1441                 if (sc->sc_stopping != 0)
1442                         continue;
1443                 if (sc->sc_md->mdo_class != md->mdo_class)
1444                         continue;
1445                 mdi1 = (struct g_raid_md_intel_object *)sc->sc_md;
1446                 if (spare) {
1447                         if (mdi1->mdio_incomplete)
1448                                 break;
1449                 } else {
1450                         if (mdi1->mdio_config_id == meta->config_id)
1451                                 break;
1452                 }
1453         }
1454
1455         /* Found matching node. */
1456         if (geom != NULL) {
1457                 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
1458                 result = G_RAID_MD_TASTE_EXISTING;
1459
1460         } else if (spare) { /* Not found needy node -- left for later. */
1461                 G_RAID_DEBUG(1, "Spare is not needed at this time");
1462                 goto fail1;
1463
1464         } else { /* Not found matching node -- create one. */
1465                 result = G_RAID_MD_TASTE_NEW;
1466                 mdi->mdio_config_id = meta->config_id;
1467                 mdi->mdio_orig_config_id = meta->orig_config_id;
1468                 snprintf(name, sizeof(name), "Intel-%08x", meta->config_id);
1469                 sc = g_raid_create_node(mp, name, md);
1470                 md->mdo_softc = sc;
1471                 geom = sc->sc_geom;
1472                 callout_init(&mdi->mdio_start_co, 1);
1473                 callout_reset(&mdi->mdio_start_co, g_raid_start_timeout * hz,
1474                     g_raid_intel_go, sc);
1475                 mdi->mdio_rootmount = root_mount_hold("GRAID-Intel");
1476                 G_RAID_DEBUG1(1, sc, "root_mount_hold %p", mdi->mdio_rootmount);
1477         }
1478
1479         rcp = g_new_consumer(geom);
1480         rcp->flags |= G_CF_DIRECT_RECEIVE;
1481         g_attach(rcp, pp);
1482         if (g_access(rcp, 1, 1, 1) != 0)
1483                 ; //goto fail1;
1484
1485         g_topology_unlock();
1486         sx_xlock(&sc->sc_lock);
1487
1488         pd = malloc(sizeof(*pd), M_MD_INTEL, M_WAITOK | M_ZERO);
1489         pd->pd_meta = meta;
1490         pd->pd_disk_pos = -1;
1491         if (spare == 2) {
1492                 memcpy(&pd->pd_disk_meta.serial[0], serial, INTEL_SERIAL_LEN);
1493                 intel_set_disk_sectors(&pd->pd_disk_meta,
1494                     pp->mediasize / pp->sectorsize);
1495                 pd->pd_disk_meta.id = 0;
1496                 pd->pd_disk_meta.flags = INTEL_F_SPARE;
1497         } else {
1498                 pd->pd_disk_meta = meta->disk[disk_pos];
1499         }
1500         disk = g_raid_create_disk(sc);
1501         disk->d_md_data = (void *)pd;
1502         disk->d_consumer = rcp;
1503         rcp->private = disk;
1504
1505         g_raid_get_disk_info(disk);
1506
1507         g_raid_md_intel_new_disk(disk);
1508
1509         sx_xunlock(&sc->sc_lock);
1510         g_topology_lock();
1511         *gp = geom;
1512         return (result);
1513 fail2:
1514         g_topology_lock();
1515         g_access(cp, -1, 0, 0);
1516 fail1:
1517         free(meta, M_MD_INTEL);
1518         return (G_RAID_MD_TASTE_FAIL);
1519 }
1520
1521 static int
1522 g_raid_md_event_intel(struct g_raid_md_object *md,
1523     struct g_raid_disk *disk, u_int event)
1524 {
1525         struct g_raid_softc *sc;
1526         struct g_raid_subdisk *sd;
1527         struct g_raid_md_intel_object *mdi;
1528         struct g_raid_md_intel_perdisk *pd;
1529
1530         sc = md->mdo_softc;
1531         mdi = (struct g_raid_md_intel_object *)md;
1532         if (disk == NULL) {
1533                 switch (event) {
1534                 case G_RAID_NODE_E_START:
1535                         if (!mdi->mdio_started)
1536                                 g_raid_md_intel_start(sc);
1537                         return (0);
1538                 }
1539                 return (-1);
1540         }
1541         pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
1542         switch (event) {
1543         case G_RAID_DISK_E_DISCONNECTED:
1544                 /* If disk was assigned, just update statuses. */
1545                 if (pd->pd_disk_pos >= 0) {
1546                         g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
1547                         if (disk->d_consumer) {
1548                                 g_raid_kill_consumer(sc, disk->d_consumer);
1549                                 disk->d_consumer = NULL;
1550                         }
1551                         TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
1552                                 g_raid_change_subdisk_state(sd,
1553                                     G_RAID_SUBDISK_S_NONE);
1554                                 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED,
1555                                     G_RAID_EVENT_SUBDISK);
1556                         }
1557                 } else {
1558                         /* Otherwise -- delete. */
1559                         g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
1560                         g_raid_destroy_disk(disk);
1561                 }
1562
1563                 /* Write updated metadata to all disks. */
1564                 g_raid_md_write_intel(md, NULL, NULL, NULL);
1565
1566                 /* Check if anything left except placeholders. */
1567                 if (g_raid_ndisks(sc, -1) ==
1568                     g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
1569                         g_raid_destroy_node(sc, 0);
1570                 else
1571                         g_raid_md_intel_refill(sc);
1572                 return (0);
1573         }
1574         return (-2);
1575 }
1576
1577 static int
1578 g_raid_md_ctl_intel(struct g_raid_md_object *md,
1579     struct gctl_req *req)
1580 {
1581         struct g_raid_softc *sc;
1582         struct g_raid_volume *vol, *vol1;
1583         struct g_raid_subdisk *sd;
1584         struct g_raid_disk *disk;
1585         struct g_raid_md_intel_object *mdi;
1586         struct g_raid_md_intel_pervolume *pv;
1587         struct g_raid_md_intel_perdisk *pd;
1588         struct g_consumer *cp;
1589         struct g_provider *pp;
1590         char arg[16], serial[INTEL_SERIAL_LEN];
1591         const char *nodename, *verb, *volname, *levelname, *diskname;
1592         char *tmp;
1593         int *nargs, *force;
1594         off_t off, size, sectorsize, strip, disk_sectors;
1595         intmax_t *sizearg, *striparg;
1596         int numdisks, i, len, level, qual, update;
1597         int error;
1598
1599         sc = md->mdo_softc;
1600         mdi = (struct g_raid_md_intel_object *)md;
1601         verb = gctl_get_param(req, "verb", NULL);
1602         nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
1603         error = 0;
1604         if (strcmp(verb, "label") == 0) {
1605
1606                 if (*nargs < 4) {
1607                         gctl_error(req, "Invalid number of arguments.");
1608                         return (-1);
1609                 }
1610                 volname = gctl_get_asciiparam(req, "arg1");
1611                 if (volname == NULL) {
1612                         gctl_error(req, "No volume name.");
1613                         return (-2);
1614                 }
1615                 levelname = gctl_get_asciiparam(req, "arg2");
1616                 if (levelname == NULL) {
1617                         gctl_error(req, "No RAID level.");
1618                         return (-3);
1619                 }
1620                 if (strcasecmp(levelname, "RAID5") == 0)
1621                         levelname = "RAID5-LA";
1622                 if (g_raid_volume_str2level(levelname, &level, &qual)) {
1623                         gctl_error(req, "Unknown RAID level '%s'.", levelname);
1624                         return (-4);
1625                 }
1626                 numdisks = *nargs - 3;
1627                 force = gctl_get_paraml(req, "force", sizeof(*force));
1628                 if (!g_raid_md_intel_supported(level, qual, numdisks,
1629                     force ? *force : 0)) {
1630                         gctl_error(req, "Unsupported RAID level "
1631                             "(0x%02x/0x%02x), or number of disks (%d).",
1632                             level, qual, numdisks);
1633                         return (-5);
1634                 }
1635
1636                 /* Search for disks, connect them and probe. */
1637                 size = 0x7fffffffffffffffllu;
1638                 sectorsize = 0;
1639                 for (i = 0; i < numdisks; i++) {
1640                         snprintf(arg, sizeof(arg), "arg%d", i + 3);
1641                         diskname = gctl_get_asciiparam(req, arg);
1642                         if (diskname == NULL) {
1643                                 gctl_error(req, "No disk name (%s).", arg);
1644                                 error = -6;
1645                                 break;
1646                         }
1647                         if (strcmp(diskname, "NONE") == 0) {
1648                                 cp = NULL;
1649                                 pp = NULL;
1650                         } else {
1651                                 g_topology_lock();
1652                                 cp = g_raid_open_consumer(sc, diskname);
1653                                 if (cp == NULL) {
1654                                         gctl_error(req, "Can't open disk '%s'.",
1655                                             diskname);
1656                                         g_topology_unlock();
1657                                         error = -7;
1658                                         break;
1659                                 }
1660                                 pp = cp->provider;
1661                         }
1662                         pd = malloc(sizeof(*pd), M_MD_INTEL, M_WAITOK | M_ZERO);
1663                         pd->pd_disk_pos = i;
1664                         disk = g_raid_create_disk(sc);
1665                         disk->d_md_data = (void *)pd;
1666                         disk->d_consumer = cp;
1667                         if (cp == NULL) {
1668                                 strcpy(&pd->pd_disk_meta.serial[0], "NONE");
1669                                 pd->pd_disk_meta.id = 0xffffffff;
1670                                 pd->pd_disk_meta.flags = INTEL_F_ASSIGNED;
1671                                 continue;
1672                         }
1673                         cp->private = disk;
1674                         g_topology_unlock();
1675
1676                         error = g_raid_md_get_label(cp,
1677                             &pd->pd_disk_meta.serial[0], INTEL_SERIAL_LEN);
1678                         if (error != 0) {
1679                                 gctl_error(req,
1680                                     "Can't get serial for provider '%s'.",
1681                                     diskname);
1682                                 error = -8;
1683                                 break;
1684                         }
1685
1686                         g_raid_get_disk_info(disk);
1687
1688                         intel_set_disk_sectors(&pd->pd_disk_meta,
1689                             pp->mediasize / pp->sectorsize);
1690                         if (size > pp->mediasize)
1691                                 size = pp->mediasize;
1692                         if (sectorsize < pp->sectorsize)
1693                                 sectorsize = pp->sectorsize;
1694                         pd->pd_disk_meta.id = 0;
1695                         pd->pd_disk_meta.flags = INTEL_F_ASSIGNED | INTEL_F_ONLINE;
1696                 }
1697                 if (error != 0)
1698                         return (error);
1699
1700                 if (sectorsize <= 0) {
1701                         gctl_error(req, "Can't get sector size.");
1702                         return (-8);
1703                 }
1704
1705                 /* Reserve some space for metadata. */
1706                 size -= ((4096 + sectorsize - 1) / sectorsize) * sectorsize;
1707
1708                 /* Handle size argument. */
1709                 len = sizeof(*sizearg);
1710                 sizearg = gctl_get_param(req, "size", &len);
1711                 if (sizearg != NULL && len == sizeof(*sizearg) &&
1712                     *sizearg > 0) {
1713                         if (*sizearg > size) {
1714                                 gctl_error(req, "Size too big %lld > %lld.",
1715                                     (long long)*sizearg, (long long)size);
1716                                 return (-9);
1717                         }
1718                         size = *sizearg;
1719                 }
1720
1721                 /* Handle strip argument. */
1722                 strip = 131072;
1723                 len = sizeof(*striparg);
1724                 striparg = gctl_get_param(req, "strip", &len);
1725                 if (striparg != NULL && len == sizeof(*striparg) &&
1726                     *striparg > 0) {
1727                         if (*striparg < sectorsize) {
1728                                 gctl_error(req, "Strip size too small.");
1729                                 return (-10);
1730                         }
1731                         if (*striparg % sectorsize != 0) {
1732                                 gctl_error(req, "Incorrect strip size.");
1733                                 return (-11);
1734                         }
1735                         if (strip > 65535 * sectorsize) {
1736                                 gctl_error(req, "Strip size too big.");
1737                                 return (-12);
1738                         }
1739                         strip = *striparg;
1740                 }
1741
1742                 /* Round size down to strip or sector. */
1743                 if (level == G_RAID_VOLUME_RL_RAID1)
1744                         size -= (size % sectorsize);
1745                 else if (level == G_RAID_VOLUME_RL_RAID1E &&
1746                     (numdisks & 1) != 0)
1747                         size -= (size % (2 * strip));
1748                 else
1749                         size -= (size % strip);
1750                 if (size <= 0) {
1751                         gctl_error(req, "Size too small.");
1752                         return (-13);
1753                 }
1754
1755                 /* We have all we need, create things: volume, ... */
1756                 mdi->mdio_started = 1;
1757                 vol = g_raid_create_volume(sc, volname, -1);
1758                 pv = malloc(sizeof(*pv), M_MD_INTEL, M_WAITOK | M_ZERO);
1759                 pv->pv_volume_pos = 0;
1760                 vol->v_md_data = pv;
1761                 vol->v_raid_level = level;
1762                 vol->v_raid_level_qualifier = qual;
1763                 vol->v_strip_size = strip;
1764                 vol->v_disks_count = numdisks;
1765                 if (level == G_RAID_VOLUME_RL_RAID0)
1766                         vol->v_mediasize = size * numdisks;
1767                 else if (level == G_RAID_VOLUME_RL_RAID1)
1768                         vol->v_mediasize = size;
1769                 else if (level == G_RAID_VOLUME_RL_RAID5)
1770                         vol->v_mediasize = size * (numdisks - 1);
1771                 else { /* RAID1E */
1772                         vol->v_mediasize = ((size * numdisks) / strip / 2) *
1773                             strip;
1774                 }
1775                 vol->v_sectorsize = sectorsize;
1776                 g_raid_start_volume(vol);
1777
1778                 /* , and subdisks. */
1779                 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1780                         pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
1781                         sd = &vol->v_subdisks[pd->pd_disk_pos];
1782                         sd->sd_disk = disk;
1783                         sd->sd_offset = 0;
1784                         sd->sd_size = size;
1785                         TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
1786                         if (sd->sd_disk->d_consumer != NULL) {
1787                                 g_raid_change_disk_state(disk,
1788                                     G_RAID_DISK_S_ACTIVE);
1789                                 if (level == G_RAID_VOLUME_RL_RAID5)
1790                                         g_raid_change_subdisk_state(sd,
1791                                             G_RAID_SUBDISK_S_UNINITIALIZED);
1792                                 else
1793                                         g_raid_change_subdisk_state(sd,
1794                                             G_RAID_SUBDISK_S_ACTIVE);
1795                                 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
1796                                     G_RAID_EVENT_SUBDISK);
1797                         } else {
1798                                 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
1799                         }
1800                 }
1801
1802                 /* Write metadata based on created entities. */
1803                 G_RAID_DEBUG1(0, sc, "Array started.");
1804                 g_raid_md_write_intel(md, NULL, NULL, NULL);
1805
1806                 /* Pickup any STALE/SPARE disks to refill array if needed. */
1807                 g_raid_md_intel_refill(sc);
1808
1809                 g_raid_event_send(vol, G_RAID_VOLUME_E_START,
1810                     G_RAID_EVENT_VOLUME);
1811                 return (0);
1812         }
1813         if (strcmp(verb, "add") == 0) {
1814
1815                 if (*nargs != 3) {
1816                         gctl_error(req, "Invalid number of arguments.");
1817                         return (-1);
1818                 }
1819                 volname = gctl_get_asciiparam(req, "arg1");
1820                 if (volname == NULL) {
1821                         gctl_error(req, "No volume name.");
1822                         return (-2);
1823                 }
1824                 levelname = gctl_get_asciiparam(req, "arg2");
1825                 if (levelname == NULL) {
1826                         gctl_error(req, "No RAID level.");
1827                         return (-3);
1828                 }
1829                 if (strcasecmp(levelname, "RAID5") == 0)
1830                         levelname = "RAID5-LA";
1831                 if (g_raid_volume_str2level(levelname, &level, &qual)) {
1832                         gctl_error(req, "Unknown RAID level '%s'.", levelname);
1833                         return (-4);
1834                 }
1835
1836                 /* Look for existing volumes. */
1837                 i = 0;
1838                 vol1 = NULL;
1839                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
1840                         vol1 = vol;
1841                         i++;
1842                 }
1843                 if (i > 1) {
1844                         gctl_error(req, "Maximum two volumes supported.");
1845                         return (-6);
1846                 }
1847                 if (vol1 == NULL) {
1848                         gctl_error(req, "At least one volume must exist.");
1849                         return (-7);
1850                 }
1851
1852                 numdisks = vol1->v_disks_count;
1853                 force = gctl_get_paraml(req, "force", sizeof(*force));
1854                 if (!g_raid_md_intel_supported(level, qual, numdisks,
1855                     force ? *force : 0)) {
1856                         gctl_error(req, "Unsupported RAID level "
1857                             "(0x%02x/0x%02x), or number of disks (%d).",
1858                             level, qual, numdisks);
1859                         return (-5);
1860                 }
1861
1862                 /* Collect info about present disks. */
1863                 size = 0x7fffffffffffffffllu;
1864                 sectorsize = 512;
1865                 for (i = 0; i < numdisks; i++) {
1866                         disk = vol1->v_subdisks[i].sd_disk;
1867                         pd = (struct g_raid_md_intel_perdisk *)
1868                             disk->d_md_data;
1869                         disk_sectors =
1870                             intel_get_disk_sectors(&pd->pd_disk_meta);
1871
1872                         if (disk_sectors * 512 < size)
1873                                 size = disk_sectors * 512;
1874                         if (disk->d_consumer != NULL &&
1875                             disk->d_consumer->provider != NULL &&
1876                             disk->d_consumer->provider->sectorsize >
1877                              sectorsize) {
1878                                 sectorsize =
1879                                     disk->d_consumer->provider->sectorsize;
1880                         }
1881                 }
1882
1883                 /* Reserve some space for metadata. */
1884                 size -= ((4096 + sectorsize - 1) / sectorsize) * sectorsize;
1885
1886                 /* Decide insert before or after. */
1887                 sd = &vol1->v_subdisks[0];
1888                 if (sd->sd_offset >
1889                     size - (sd->sd_offset + sd->sd_size)) {
1890                         off = 0;
1891                         size = sd->sd_offset;
1892                 } else {
1893                         off = sd->sd_offset + sd->sd_size;
1894                         size = size - (sd->sd_offset + sd->sd_size);
1895                 }
1896
1897                 /* Handle strip argument. */
1898                 strip = 131072;
1899                 len = sizeof(*striparg);
1900                 striparg = gctl_get_param(req, "strip", &len);
1901                 if (striparg != NULL && len == sizeof(*striparg) &&
1902                     *striparg > 0) {
1903                         if (*striparg < sectorsize) {
1904                                 gctl_error(req, "Strip size too small.");
1905                                 return (-10);
1906                         }
1907                         if (*striparg % sectorsize != 0) {
1908                                 gctl_error(req, "Incorrect strip size.");
1909                                 return (-11);
1910                         }
1911                         if (strip > 65535 * sectorsize) {
1912                                 gctl_error(req, "Strip size too big.");
1913                                 return (-12);
1914                         }
1915                         strip = *striparg;
1916                 }
1917
1918                 /* Round offset up to strip. */
1919                 if (off % strip != 0) {
1920                         size -= strip - off % strip;
1921                         off += strip - off % strip;
1922                 }
1923
1924                 /* Handle size argument. */
1925                 len = sizeof(*sizearg);
1926                 sizearg = gctl_get_param(req, "size", &len);
1927                 if (sizearg != NULL && len == sizeof(*sizearg) &&
1928                     *sizearg > 0) {
1929                         if (*sizearg > size) {
1930                                 gctl_error(req, "Size too big %lld > %lld.",
1931                                     (long long)*sizearg, (long long)size);
1932                                 return (-9);
1933                         }
1934                         size = *sizearg;
1935                 }
1936
1937                 /* Round size down to strip or sector. */
1938                 if (level == G_RAID_VOLUME_RL_RAID1)
1939                         size -= (size % sectorsize);
1940                 else
1941                         size -= (size % strip);
1942                 if (size <= 0) {
1943                         gctl_error(req, "Size too small.");
1944                         return (-13);
1945                 }
1946                 if (size > 0xffffffffllu * sectorsize) {
1947                         gctl_error(req, "Size too big.");
1948                         return (-14);
1949                 }
1950
1951                 /* We have all we need, create things: volume, ... */
1952                 vol = g_raid_create_volume(sc, volname, -1);
1953                 pv = malloc(sizeof(*pv), M_MD_INTEL, M_WAITOK | M_ZERO);
1954                 pv->pv_volume_pos = i;
1955                 vol->v_md_data = pv;
1956                 vol->v_raid_level = level;
1957                 vol->v_raid_level_qualifier = qual;
1958                 vol->v_strip_size = strip;
1959                 vol->v_disks_count = numdisks;
1960                 if (level == G_RAID_VOLUME_RL_RAID0)
1961                         vol->v_mediasize = size * numdisks;
1962                 else if (level == G_RAID_VOLUME_RL_RAID1)
1963                         vol->v_mediasize = size;
1964                 else if (level == G_RAID_VOLUME_RL_RAID5)
1965                         vol->v_mediasize = size * (numdisks - 1);
1966                 else { /* RAID1E */
1967                         vol->v_mediasize = ((size * numdisks) / strip / 2) *
1968                             strip;
1969                 }
1970                 vol->v_sectorsize = sectorsize;
1971                 g_raid_start_volume(vol);
1972
1973                 /* , and subdisks. */
1974                 for (i = 0; i < numdisks; i++) {
1975                         disk = vol1->v_subdisks[i].sd_disk;
1976                         sd = &vol->v_subdisks[i];
1977                         sd->sd_disk = disk;
1978                         sd->sd_offset = off;
1979                         sd->sd_size = size;
1980                         TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
1981                         if (disk->d_state == G_RAID_DISK_S_ACTIVE) {
1982                                 if (level == G_RAID_VOLUME_RL_RAID5)
1983                                         g_raid_change_subdisk_state(sd,
1984                                             G_RAID_SUBDISK_S_UNINITIALIZED);
1985                                 else
1986                                         g_raid_change_subdisk_state(sd,
1987                                             G_RAID_SUBDISK_S_ACTIVE);
1988                                 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
1989                                     G_RAID_EVENT_SUBDISK);
1990                         }
1991                 }
1992
1993                 /* Write metadata based on created entities. */
1994                 g_raid_md_write_intel(md, NULL, NULL, NULL);
1995
1996                 g_raid_event_send(vol, G_RAID_VOLUME_E_START,
1997                     G_RAID_EVENT_VOLUME);
1998                 return (0);
1999         }
2000         if (strcmp(verb, "delete") == 0) {
2001
2002                 nodename = gctl_get_asciiparam(req, "arg0");
2003                 if (nodename != NULL && strcasecmp(sc->sc_name, nodename) != 0)
2004                         nodename = NULL;
2005
2006                 /* Full node destruction. */
2007                 if (*nargs == 1 && nodename != NULL) {
2008                         /* Check if some volume is still open. */
2009                         force = gctl_get_paraml(req, "force", sizeof(*force));
2010                         if (force != NULL && *force == 0 &&
2011                             g_raid_nopens(sc) != 0) {
2012                                 gctl_error(req, "Some volume is still open.");
2013                                 return (-4);
2014                         }
2015
2016                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2017                                 if (disk->d_consumer)
2018                                         intel_meta_erase(disk->d_consumer);
2019                         }
2020                         g_raid_destroy_node(sc, 0);
2021                         return (0);
2022                 }
2023
2024                 /* Destroy specified volume. If it was last - all node. */
2025                 if (*nargs > 2) {
2026                         gctl_error(req, "Invalid number of arguments.");
2027                         return (-1);
2028                 }
2029                 volname = gctl_get_asciiparam(req,
2030                     nodename != NULL ? "arg1" : "arg0");
2031                 if (volname == NULL) {
2032                         gctl_error(req, "No volume name.");
2033                         return (-2);
2034                 }
2035
2036                 /* Search for volume. */
2037                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2038                         if (strcmp(vol->v_name, volname) == 0)
2039                                 break;
2040                         pp = vol->v_provider;
2041                         if (pp == NULL)
2042                                 continue;
2043                         if (strcmp(pp->name, volname) == 0)
2044                                 break;
2045                         if (strncmp(pp->name, "raid/", 5) == 0 &&
2046                             strcmp(pp->name + 5, volname) == 0)
2047                                 break;
2048                 }
2049                 if (vol == NULL) {
2050                         i = strtol(volname, &tmp, 10);
2051                         if (verb != volname && tmp[0] == 0) {
2052                                 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2053                                         if (vol->v_global_id == i)
2054                                                 break;
2055                                 }
2056                         }
2057                 }
2058                 if (vol == NULL) {
2059                         gctl_error(req, "Volume '%s' not found.", volname);
2060                         return (-3);
2061                 }
2062
2063                 /* Check if volume is still open. */
2064                 force = gctl_get_paraml(req, "force", sizeof(*force));
2065                 if (force != NULL && *force == 0 &&
2066                     vol->v_provider_open != 0) {
2067                         gctl_error(req, "Volume is still open.");
2068                         return (-4);
2069                 }
2070
2071                 /* Destroy volume and potentially node. */
2072                 i = 0;
2073                 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next)
2074                         i++;
2075                 if (i >= 2) {
2076                         g_raid_destroy_volume(vol);
2077                         g_raid_md_write_intel(md, NULL, NULL, NULL);
2078                 } else {
2079                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2080                                 if (disk->d_consumer)
2081                                         intel_meta_erase(disk->d_consumer);
2082                         }
2083                         g_raid_destroy_node(sc, 0);
2084                 }
2085                 return (0);
2086         }
2087         if (strcmp(verb, "remove") == 0 ||
2088             strcmp(verb, "fail") == 0) {
2089                 if (*nargs < 2) {
2090                         gctl_error(req, "Invalid number of arguments.");
2091                         return (-1);
2092                 }
2093                 for (i = 1; i < *nargs; i++) {
2094                         snprintf(arg, sizeof(arg), "arg%d", i);
2095                         diskname = gctl_get_asciiparam(req, arg);
2096                         if (diskname == NULL) {
2097                                 gctl_error(req, "No disk name (%s).", arg);
2098                                 error = -2;
2099                                 break;
2100                         }
2101                         if (strncmp(diskname, "/dev/", 5) == 0)
2102                                 diskname += 5;
2103
2104                         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2105                                 if (disk->d_consumer != NULL &&
2106                                     disk->d_consumer->provider != NULL &&
2107                                     strcmp(disk->d_consumer->provider->name,
2108                                      diskname) == 0)
2109                                         break;
2110                         }
2111                         if (disk == NULL) {
2112                                 gctl_error(req, "Disk '%s' not found.",
2113                                     diskname);
2114                                 error = -3;
2115                                 break;
2116                         }
2117
2118                         if (strcmp(verb, "fail") == 0) {
2119                                 g_raid_md_fail_disk_intel(md, NULL, disk);
2120                                 continue;
2121                         }
2122
2123                         pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
2124
2125                         /* Erase metadata on deleting disk. */
2126                         intel_meta_erase(disk->d_consumer);
2127
2128                         /* If disk was assigned, just update statuses. */
2129                         if (pd->pd_disk_pos >= 0) {
2130                                 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
2131                                 g_raid_kill_consumer(sc, disk->d_consumer);
2132                                 disk->d_consumer = NULL;
2133                                 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
2134                                         g_raid_change_subdisk_state(sd,
2135                                             G_RAID_SUBDISK_S_NONE);
2136                                         g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED,
2137                                             G_RAID_EVENT_SUBDISK);
2138                                 }
2139                         } else {
2140                                 /* Otherwise -- delete. */
2141                                 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
2142                                 g_raid_destroy_disk(disk);
2143                         }
2144                 }
2145
2146                 /* Write updated metadata to remaining disks. */
2147                 g_raid_md_write_intel(md, NULL, NULL, NULL);
2148
2149                 /* Check if anything left except placeholders. */
2150                 if (g_raid_ndisks(sc, -1) ==
2151                     g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
2152                         g_raid_destroy_node(sc, 0);
2153                 else
2154                         g_raid_md_intel_refill(sc);
2155                 return (error);
2156         }
2157         if (strcmp(verb, "insert") == 0) {
2158                 if (*nargs < 2) {
2159                         gctl_error(req, "Invalid number of arguments.");
2160                         return (-1);
2161                 }
2162                 update = 0;
2163                 for (i = 1; i < *nargs; i++) {
2164                         /* Get disk name. */
2165                         snprintf(arg, sizeof(arg), "arg%d", i);
2166                         diskname = gctl_get_asciiparam(req, arg);
2167                         if (diskname == NULL) {
2168                                 gctl_error(req, "No disk name (%s).", arg);
2169                                 error = -3;
2170                                 break;
2171                         }
2172
2173                         /* Try to find provider with specified name. */
2174                         g_topology_lock();
2175                         cp = g_raid_open_consumer(sc, diskname);
2176                         if (cp == NULL) {
2177                                 gctl_error(req, "Can't open disk '%s'.",
2178                                     diskname);
2179                                 g_topology_unlock();
2180                                 error = -4;
2181                                 break;
2182                         }
2183                         pp = cp->provider;
2184                         g_topology_unlock();
2185
2186                         /* Read disk serial. */
2187                         error = g_raid_md_get_label(cp,
2188                             &serial[0], INTEL_SERIAL_LEN);
2189                         if (error != 0) {
2190                                 gctl_error(req,
2191                                     "Can't get serial for provider '%s'.",
2192                                     diskname);
2193                                 g_raid_kill_consumer(sc, cp);
2194                                 error = -7;
2195                                 break;
2196                         }
2197
2198                         pd = malloc(sizeof(*pd), M_MD_INTEL, M_WAITOK | M_ZERO);
2199                         pd->pd_disk_pos = -1;
2200
2201                         disk = g_raid_create_disk(sc);
2202                         disk->d_consumer = cp;
2203                         disk->d_md_data = (void *)pd;
2204                         cp->private = disk;
2205
2206                         g_raid_get_disk_info(disk);
2207
2208                         memcpy(&pd->pd_disk_meta.serial[0], &serial[0],
2209                             INTEL_SERIAL_LEN);
2210                         intel_set_disk_sectors(&pd->pd_disk_meta,
2211                             pp->mediasize / pp->sectorsize);
2212                         pd->pd_disk_meta.id = 0;
2213                         pd->pd_disk_meta.flags = INTEL_F_SPARE;
2214
2215                         /* Welcome the "new" disk. */
2216                         update += g_raid_md_intel_start_disk(disk);
2217                         if (disk->d_state == G_RAID_DISK_S_SPARE) {
2218                                 intel_meta_write_spare(cp, &pd->pd_disk_meta);
2219                                 g_raid_destroy_disk(disk);
2220                         } else if (disk->d_state != G_RAID_DISK_S_ACTIVE) {
2221                                 gctl_error(req, "Disk '%s' doesn't fit.",
2222                                     diskname);
2223                                 g_raid_destroy_disk(disk);
2224                                 error = -8;
2225                                 break;
2226                         }
2227                 }
2228
2229                 /* Write new metadata if we changed something. */
2230                 if (update)
2231                         g_raid_md_write_intel(md, NULL, NULL, NULL);
2232                 return (error);
2233         }
2234         return (-100);
2235 }
2236
2237 static int
2238 g_raid_md_write_intel(struct g_raid_md_object *md, struct g_raid_volume *tvol,
2239     struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
2240 {
2241         struct g_raid_softc *sc;
2242         struct g_raid_volume *vol;
2243         struct g_raid_subdisk *sd;
2244         struct g_raid_disk *disk;
2245         struct g_raid_md_intel_object *mdi;
2246         struct g_raid_md_intel_pervolume *pv;
2247         struct g_raid_md_intel_perdisk *pd;
2248         struct intel_raid_conf *meta;
2249         struct intel_raid_vol *mvol;
2250         struct intel_raid_map *mmap0, *mmap1;
2251         off_t sectorsize = 512, pos;
2252         const char *version, *cv;
2253         int vi, sdi, numdisks, len, state, stale;
2254
2255         sc = md->mdo_softc;
2256         mdi = (struct g_raid_md_intel_object *)md;
2257
2258         if (sc->sc_stopping == G_RAID_DESTROY_HARD)
2259                 return (0);
2260
2261         /* Bump generation. Newly written metadata may differ from previous. */
2262         mdi->mdio_generation++;
2263
2264         /* Count number of disks. */
2265         numdisks = 0;
2266         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2267                 pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
2268                 if (pd->pd_disk_pos < 0)
2269                         continue;
2270                 numdisks++;
2271                 if (disk->d_state == G_RAID_DISK_S_ACTIVE) {
2272                         pd->pd_disk_meta.flags =
2273                             INTEL_F_ONLINE | INTEL_F_ASSIGNED;
2274                 } else if (disk->d_state == G_RAID_DISK_S_FAILED) {
2275                         pd->pd_disk_meta.flags = INTEL_F_FAILED |
2276                             INTEL_F_ASSIGNED;
2277                 } else if (disk->d_state == G_RAID_DISK_S_DISABLED) {
2278                         pd->pd_disk_meta.flags = INTEL_F_FAILED |
2279                             INTEL_F_ASSIGNED | INTEL_F_DISABLED;
2280                 } else {
2281                         if (!(pd->pd_disk_meta.flags & INTEL_F_DISABLED))
2282                                 pd->pd_disk_meta.flags = INTEL_F_ASSIGNED;
2283                         if (pd->pd_disk_meta.id != 0xffffffff) {
2284                                 pd->pd_disk_meta.id = 0xffffffff;
2285                                 len = strlen(pd->pd_disk_meta.serial);
2286                                 len = min(len, INTEL_SERIAL_LEN - 3);
2287                                 strcpy(pd->pd_disk_meta.serial + len, ":0");
2288                         }
2289                 }
2290         }
2291
2292         /* Fill anchor and disks. */
2293         meta = malloc(INTEL_MAX_MD_SIZE(numdisks),
2294             M_MD_INTEL, M_WAITOK | M_ZERO);
2295         memcpy(&meta->intel_id[0], INTEL_MAGIC, sizeof(INTEL_MAGIC) - 1);
2296         meta->config_size = INTEL_MAX_MD_SIZE(numdisks);
2297         meta->config_id = mdi->mdio_config_id;
2298         meta->orig_config_id = mdi->mdio_orig_config_id;
2299         meta->generation = mdi->mdio_generation;
2300         meta->attributes = INTEL_ATTR_CHECKSUM;
2301         meta->total_disks = numdisks;
2302         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2303                 pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
2304                 if (pd->pd_disk_pos < 0)
2305                         continue;
2306                 meta->disk[pd->pd_disk_pos] = pd->pd_disk_meta;
2307                 if (pd->pd_disk_meta.sectors_hi != 0)
2308                         meta->attributes |= INTEL_ATTR_2TB_DISK;
2309         }
2310
2311         /* Fill volumes and maps. */
2312         vi = 0;
2313         version = INTEL_VERSION_1000;
2314         TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
2315                 pv = vol->v_md_data;
2316                 if (vol->v_stopping)
2317                         continue;
2318                 mvol = intel_get_volume(meta, vi);
2319
2320                 /* New metadata may have different volumes order. */
2321                 pv->pv_volume_pos = vi;
2322
2323                 for (sdi = 0; sdi < vol->v_disks_count; sdi++) {
2324                         sd = &vol->v_subdisks[sdi];
2325                         if (sd->sd_disk != NULL)
2326                                 break;
2327                 }
2328                 if (sdi >= vol->v_disks_count)
2329                         panic("No any filled subdisk in volume");
2330                 if (vol->v_mediasize >= 0x20000000000llu)
2331                         meta->attributes |= INTEL_ATTR_2TB;
2332                 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0)
2333                         meta->attributes |= INTEL_ATTR_RAID0;
2334                 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1)
2335                         meta->attributes |= INTEL_ATTR_RAID1;
2336                 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5)
2337                         meta->attributes |= INTEL_ATTR_RAID5;
2338                 else if ((vol->v_disks_count & 1) == 0)
2339                         meta->attributes |= INTEL_ATTR_RAID10;
2340                 else
2341                         meta->attributes |= INTEL_ATTR_RAID1E;
2342                 if (pv->pv_cng)
2343                         meta->attributes |= INTEL_ATTR_RAIDCNG;
2344                 if (vol->v_strip_size > 131072)
2345                         meta->attributes |= INTEL_ATTR_EXT_STRIP;
2346
2347                 if (pv->pv_cng)
2348                         cv = INTEL_VERSION_1206;
2349                 else if (vol->v_disks_count > 4)
2350                         cv = INTEL_VERSION_1204;
2351                 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5)
2352                         cv = INTEL_VERSION_1202;
2353                 else if (vol->v_disks_count > 2)
2354                         cv = INTEL_VERSION_1201;
2355                 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1)
2356                         cv = INTEL_VERSION_1100;
2357                 else
2358                         cv = INTEL_VERSION_1000;
2359                 if (strcmp(cv, version) > 0)
2360                         version = cv;
2361
2362                 strlcpy(&mvol->name[0], vol->v_name, sizeof(mvol->name));
2363                 mvol->total_sectors = vol->v_mediasize / sectorsize;
2364                 mvol->state = (INTEL_ST_READ_COALESCING |
2365                     INTEL_ST_WRITE_COALESCING);
2366                 mvol->tid = vol->v_global_id + 1;
2367                 if (pv->pv_cng) {
2368                         mvol->state |= INTEL_ST_CLONE_N_GO;
2369                         if (pv->pv_cng_man_sync)
2370                                 mvol->state |= INTEL_ST_CLONE_MAN_SYNC;
2371                         mvol->cng_master_disk = pv->pv_cng_master_disk;
2372                         if (vol->v_subdisks[pv->pv_cng_master_disk].sd_state ==
2373                             G_RAID_SUBDISK_S_NONE)
2374                                 mvol->cng_state = INTEL_CNGST_MASTER_MISSING;
2375                         else if (vol->v_state != G_RAID_VOLUME_S_OPTIMAL)
2376                                 mvol->cng_state = INTEL_CNGST_NEEDS_UPDATE;
2377                         else
2378                                 mvol->cng_state = INTEL_CNGST_UPDATED;
2379                 }
2380
2381                 /* Check for any recovery in progress. */
2382                 state = G_RAID_SUBDISK_S_ACTIVE;
2383                 pos = 0x7fffffffffffffffllu;
2384                 stale = 0;
2385                 for (sdi = 0; sdi < vol->v_disks_count; sdi++) {
2386                         sd = &vol->v_subdisks[sdi];
2387                         if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD)
2388                                 state = G_RAID_SUBDISK_S_REBUILD;
2389                         else if (sd->sd_state == G_RAID_SUBDISK_S_RESYNC &&
2390                             state != G_RAID_SUBDISK_S_REBUILD)
2391                                 state = G_RAID_SUBDISK_S_RESYNC;
2392                         else if (sd->sd_state == G_RAID_SUBDISK_S_STALE)
2393                                 stale = 1;
2394                         if ((sd->sd_state == G_RAID_SUBDISK_S_REBUILD ||
2395                             sd->sd_state == G_RAID_SUBDISK_S_RESYNC) &&
2396                              sd->sd_rebuild_pos < pos)
2397                                 pos = sd->sd_rebuild_pos;
2398                 }
2399                 if (state == G_RAID_SUBDISK_S_REBUILD) {
2400                         mvol->migr_state = 1;
2401                         mvol->migr_type = INTEL_MT_REBUILD;
2402                 } else if (state == G_RAID_SUBDISK_S_RESYNC) {
2403                         mvol->migr_state = 1;
2404                         /* mvol->migr_type = INTEL_MT_REPAIR; */
2405                         mvol->migr_type = INTEL_MT_VERIFY;
2406                         mvol->state |= INTEL_ST_VERIFY_AND_FIX;
2407                 } else
2408                         mvol->migr_state = 0;
2409                 mvol->dirty = (vol->v_dirty || stale);
2410
2411                 mmap0 = intel_get_map(mvol, 0);
2412
2413                 /* Write map / common part of two maps. */
2414                 intel_set_map_offset(mmap0, sd->sd_offset / sectorsize);
2415                 intel_set_map_disk_sectors(mmap0, sd->sd_size / sectorsize);
2416                 mmap0->strip_sectors = vol->v_strip_size / sectorsize;
2417                 if (vol->v_state == G_RAID_VOLUME_S_BROKEN)
2418                         mmap0->status = INTEL_S_FAILURE;
2419                 else if (vol->v_state == G_RAID_VOLUME_S_DEGRADED)
2420                         mmap0->status = INTEL_S_DEGRADED;
2421                 else if (g_raid_nsubdisks(vol, G_RAID_SUBDISK_S_UNINITIALIZED)
2422                     == g_raid_nsubdisks(vol, -1))
2423                         mmap0->status = INTEL_S_UNINITIALIZED;
2424                 else
2425                         mmap0->status = INTEL_S_READY;
2426                 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0)
2427                         mmap0->type = INTEL_T_RAID0;
2428                 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 ||
2429                     vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
2430                         mmap0->type = INTEL_T_RAID1;
2431                 else
2432                         mmap0->type = INTEL_T_RAID5;
2433                 mmap0->total_disks = vol->v_disks_count;
2434                 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1)
2435                         mmap0->total_domains = vol->v_disks_count;
2436                 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
2437                         mmap0->total_domains = 2;
2438                 else
2439                         mmap0->total_domains = 1;
2440                 intel_set_map_stripe_count(mmap0,
2441                     sd->sd_size / vol->v_strip_size / mmap0->total_domains);
2442                 mmap0->failed_disk_num = 0xff;
2443                 mmap0->ddf = 1;
2444
2445                 /* If there are two maps - copy common and update. */
2446                 if (mvol->migr_state) {
2447                         intel_set_vol_curr_migr_unit(mvol,
2448                             pos / vol->v_strip_size / mmap0->total_domains);
2449                         mmap1 = intel_get_map(mvol, 1);
2450                         memcpy(mmap1, mmap0, sizeof(struct intel_raid_map));
2451                         mmap0->status = INTEL_S_READY;
2452                 } else
2453                         mmap1 = NULL;
2454
2455                 /* Write disk indexes and put rebuild flags. */
2456                 for (sdi = 0; sdi < vol->v_disks_count; sdi++) {
2457                         sd = &vol->v_subdisks[sdi];
2458                         pd = (struct g_raid_md_intel_perdisk *)
2459                             sd->sd_disk->d_md_data;
2460                         mmap0->disk_idx[sdi] = pd->pd_disk_pos;
2461                         if (mvol->migr_state)
2462                                 mmap1->disk_idx[sdi] = pd->pd_disk_pos;
2463                         if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD ||
2464                             sd->sd_state == G_RAID_SUBDISK_S_RESYNC) {
2465                                 mmap1->disk_idx[sdi] |= INTEL_DI_RBLD;
2466                         } else if (sd->sd_state != G_RAID_SUBDISK_S_ACTIVE &&
2467                             sd->sd_state != G_RAID_SUBDISK_S_STALE &&
2468                             sd->sd_state != G_RAID_SUBDISK_S_UNINITIALIZED) {
2469                                 mmap0->disk_idx[sdi] |= INTEL_DI_RBLD;
2470                                 if (mvol->migr_state)
2471                                         mmap1->disk_idx[sdi] |= INTEL_DI_RBLD;
2472                         }
2473                         if ((sd->sd_state == G_RAID_SUBDISK_S_NONE ||
2474                              sd->sd_state == G_RAID_SUBDISK_S_FAILED ||
2475                              sd->sd_state == G_RAID_SUBDISK_S_REBUILD) &&
2476                             mmap0->failed_disk_num == 0xff) {
2477                                 mmap0->failed_disk_num = sdi;
2478                                 if (mvol->migr_state)
2479                                         mmap1->failed_disk_num = sdi;
2480                         }
2481                 }
2482                 vi++;
2483         }
2484         meta->total_volumes = vi;
2485         if (vi > 1 || meta->attributes &
2486              (INTEL_ATTR_EXT_STRIP | INTEL_ATTR_2TB_DISK | INTEL_ATTR_2TB))
2487                 version = INTEL_VERSION_1300;
2488         if (strcmp(version, INTEL_VERSION_1300) < 0)
2489                 meta->attributes &= INTEL_ATTR_CHECKSUM;
2490         memcpy(&meta->version[0], version, sizeof(INTEL_VERSION_1000) - 1);
2491
2492         /* We are done. Print meta data and store them to disks. */
2493         g_raid_md_intel_print(meta);
2494         if (mdi->mdio_meta != NULL)
2495                 free(mdi->mdio_meta, M_MD_INTEL);
2496         mdi->mdio_meta = meta;
2497         TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
2498                 pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
2499                 if (disk->d_state != G_RAID_DISK_S_ACTIVE)
2500                         continue;
2501                 if (pd->pd_meta != NULL) {
2502                         free(pd->pd_meta, M_MD_INTEL);
2503                         pd->pd_meta = NULL;
2504                 }
2505                 pd->pd_meta = intel_meta_copy(meta);
2506                 intel_meta_write(disk->d_consumer, meta);
2507         }
2508         return (0);
2509 }
2510
2511 static int
2512 g_raid_md_fail_disk_intel(struct g_raid_md_object *md,
2513     struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
2514 {
2515         struct g_raid_softc *sc;
2516         struct g_raid_md_intel_object *mdi;
2517         struct g_raid_md_intel_perdisk *pd;
2518         struct g_raid_subdisk *sd;
2519
2520         sc = md->mdo_softc;
2521         mdi = (struct g_raid_md_intel_object *)md;
2522         pd = (struct g_raid_md_intel_perdisk *)tdisk->d_md_data;
2523
2524         /* We can't fail disk that is not a part of array now. */
2525         if (pd->pd_disk_pos < 0)
2526                 return (-1);
2527
2528         /*
2529          * Mark disk as failed in metadata and try to write that metadata
2530          * to the disk itself to prevent it's later resurrection as STALE.
2531          */
2532         mdi->mdio_meta->disk[pd->pd_disk_pos].flags = INTEL_F_FAILED;
2533         pd->pd_disk_meta.flags = INTEL_F_FAILED;
2534         g_raid_md_intel_print(mdi->mdio_meta);
2535         if (tdisk->d_consumer)
2536                 intel_meta_write(tdisk->d_consumer, mdi->mdio_meta);
2537
2538         /* Change states. */
2539         g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
2540         TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
2541                 g_raid_change_subdisk_state(sd,
2542                     G_RAID_SUBDISK_S_FAILED);
2543                 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
2544                     G_RAID_EVENT_SUBDISK);
2545         }
2546
2547         /* Write updated metadata to remaining disks. */
2548         g_raid_md_write_intel(md, NULL, NULL, tdisk);
2549
2550         /* Check if anything left except placeholders. */
2551         if (g_raid_ndisks(sc, -1) ==
2552             g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
2553                 g_raid_destroy_node(sc, 0);
2554         else
2555                 g_raid_md_intel_refill(sc);
2556         return (0);
2557 }
2558
2559 static int
2560 g_raid_md_free_disk_intel(struct g_raid_md_object *md,
2561     struct g_raid_disk *disk)
2562 {
2563         struct g_raid_md_intel_perdisk *pd;
2564
2565         pd = (struct g_raid_md_intel_perdisk *)disk->d_md_data;
2566         if (pd->pd_meta != NULL) {
2567                 free(pd->pd_meta, M_MD_INTEL);
2568                 pd->pd_meta = NULL;
2569         }
2570         free(pd, M_MD_INTEL);
2571         disk->d_md_data = NULL;
2572         return (0);
2573 }
2574
2575 static int
2576 g_raid_md_free_volume_intel(struct g_raid_md_object *md,
2577     struct g_raid_volume *vol)
2578 {
2579         struct g_raid_md_intel_pervolume *pv;
2580
2581         pv = (struct g_raid_md_intel_pervolume *)vol->v_md_data;
2582         free(pv, M_MD_INTEL);
2583         vol->v_md_data = NULL;
2584         return (0);
2585 }
2586
2587 static int
2588 g_raid_md_free_intel(struct g_raid_md_object *md)
2589 {
2590         struct g_raid_md_intel_object *mdi;
2591
2592         mdi = (struct g_raid_md_intel_object *)md;
2593         if (!mdi->mdio_started) {
2594                 mdi->mdio_started = 0;
2595                 callout_stop(&mdi->mdio_start_co);
2596                 G_RAID_DEBUG1(1, md->mdo_softc,
2597                     "root_mount_rel %p", mdi->mdio_rootmount);
2598                 root_mount_rel(mdi->mdio_rootmount);
2599                 mdi->mdio_rootmount = NULL;
2600         }
2601         if (mdi->mdio_meta != NULL) {
2602                 free(mdi->mdio_meta, M_MD_INTEL);
2603                 mdi->mdio_meta = NULL;
2604         }
2605         return (0);
2606 }
2607
2608 G_RAID_MD_DECLARE(intel, "Intel");