md_promise.c revision 226816
1/*- 2 * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/geom/raid/md_promise.c 226816 2011-10-26 21:50:10Z mav $"); 29 30#include <sys/param.h> 31#include <sys/bio.h> 32#include <sys/endian.h> 33#include <sys/kernel.h> 34#include <sys/kobj.h> 35#include <sys/limits.h> 36#include <sys/lock.h> 37#include <sys/malloc.h> 38#include <sys/mutex.h> 39#include <sys/systm.h> 40#include <geom/geom.h> 41#include "geom/raid/g_raid.h" 42#include "g_raid_md_if.h" 43 44static MALLOC_DEFINE(M_MD_PROMISE, "md_promise_data", "GEOM_RAID Promise metadata"); 45 46#define PROMISE_MAX_DISKS 8 47#define PROMISE_MAX_SUBDISKS 2 48#define PROMISE_META_OFFSET 14 49 50struct promise_raid_disk { 51 uint8_t flags; /* Subdisk status. */ 52#define PROMISE_F_VALID 0x01 53#define PROMISE_F_ONLINE 0x02 54#define PROMISE_F_ASSIGNED 0x04 55#define PROMISE_F_SPARE 0x08 56#define PROMISE_F_DUPLICATE 0x10 57#define PROMISE_F_REDIR 0x20 58#define PROMISE_F_DOWN 0x40 59#define PROMISE_F_READY 0x80 60 61 uint8_t number; /* Position in a volume. */ 62 uint8_t channel; /* ATA channel number. */ 63 uint8_t device; /* ATA device number. */ 64 uint64_t id __packed; /* Subdisk ID. */ 65} __packed; 66 67struct promise_raid_conf { 68 char promise_id[24]; 69#define PROMISE_MAGIC "Promise Technology, Inc." 70#define FREEBSD_MAGIC "FreeBSD ATA driver RAID " 71 72 uint32_t dummy_0; 73 uint64_t magic_0; 74#define PROMISE_MAGIC0(x) (((uint64_t)(x.channel) << 48) | \ 75 ((uint64_t)(x.device != 0) << 56)) 76 uint16_t magic_1; 77 uint32_t magic_2; 78 uint8_t filler1[470]; 79 80 uint32_t integrity; 81#define PROMISE_I_VALID 0x00000080 82 83 struct promise_raid_disk disk; /* This subdisk info. */ 84 uint32_t disk_offset; /* Subdisk offset. */ 85 uint32_t disk_sectors; /* Subdisk size */ 86 uint32_t rebuild_lba; /* Rebuild position. */ 87 uint16_t generation; /* Generation number. */ 88 uint8_t status; /* Volume status. */ 89#define PROMISE_S_VALID 0x01 90#define PROMISE_S_ONLINE 0x02 91#define PROMISE_S_INITED 0x04 92#define PROMISE_S_READY 0x08 93#define PROMISE_S_DEGRADED 0x10 94#define PROMISE_S_MARKED 0x20 95#define PROMISE_S_MIGRATING 0x40 96#define PROMISE_S_FUNCTIONAL 0x80 97 98 uint8_t type; /* Voluem type. */ 99#define PROMISE_T_RAID0 0x00 100#define PROMISE_T_RAID1 0x01 101#define PROMISE_T_RAID3 0x02 102#define PROMISE_T_RAID5 0x04 103#define PROMISE_T_SPAN 0x08 104#define PROMISE_T_JBOD 0x10 105 106 uint8_t total_disks; /* Disks in this volume. */ 107 uint8_t stripe_shift; /* Strip size. */ 108 uint8_t array_width; /* Number of RAID0 stripes. */ 109 uint8_t array_number; /* Global volume number. */ 110 uint32_t total_sectors; /* Volume size. */ 111 uint16_t cylinders; /* Volume geometry: C. */ 112 uint8_t heads; /* Volume geometry: H. */ 113 uint8_t sectors; /* Volume geometry: S. */ 114 uint64_t volume_id __packed; /* Volume ID, */ 115 struct promise_raid_disk disks[PROMISE_MAX_DISKS]; 116 /* Subdisks in this volume. */ 117 char name[32]; /* Volume label. */ 118 119 uint32_t filler2[8]; 120 uint32_t magic_3; /* Something related to rebuild. */ 121 uint64_t rebuild_lba64; /* Per-volume rebuild position. */ 122 uint32_t magic_4; 123 uint32_t magic_5; 124 uint32_t total_sectors_high; 125 uint32_t filler3[324]; 126 uint32_t checksum; 127} __packed; 128 129struct g_raid_md_promise_perdisk { 130 int pd_updated; 131 int pd_subdisks; 132 struct promise_raid_conf *pd_meta[PROMISE_MAX_SUBDISKS]; 133}; 134 135struct g_raid_md_promise_pervolume { 136 struct promise_raid_conf *pv_meta; 137 uint64_t pv_id; 138 uint16_t pv_generation; 139 int pv_disks_present; 140 int pv_started; 141 struct callout pv_start_co; /* STARTING state timer. */ 142}; 143 144static g_raid_md_create_t g_raid_md_create_promise; 145static g_raid_md_taste_t g_raid_md_taste_promise; 146static g_raid_md_event_t g_raid_md_event_promise; 147static g_raid_md_volume_event_t g_raid_md_volume_event_promise; 148static g_raid_md_ctl_t g_raid_md_ctl_promise; 149static g_raid_md_write_t g_raid_md_write_promise; 150static g_raid_md_fail_disk_t g_raid_md_fail_disk_promise; 151static g_raid_md_free_disk_t g_raid_md_free_disk_promise; 152static g_raid_md_free_volume_t g_raid_md_free_volume_promise; 153static g_raid_md_free_t g_raid_md_free_promise; 154 155static kobj_method_t g_raid_md_promise_methods[] = { 156 KOBJMETHOD(g_raid_md_create, g_raid_md_create_promise), 157 KOBJMETHOD(g_raid_md_taste, g_raid_md_taste_promise), 158 KOBJMETHOD(g_raid_md_event, g_raid_md_event_promise), 159 KOBJMETHOD(g_raid_md_volume_event, g_raid_md_volume_event_promise), 160 KOBJMETHOD(g_raid_md_ctl, g_raid_md_ctl_promise), 161 KOBJMETHOD(g_raid_md_write, g_raid_md_write_promise), 162 KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_promise), 163 KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_promise), 164 KOBJMETHOD(g_raid_md_free_volume, g_raid_md_free_volume_promise), 165 KOBJMETHOD(g_raid_md_free, g_raid_md_free_promise), 166 { 0, 0 } 167}; 168 169static struct g_raid_md_class g_raid_md_promise_class = { 170 "Promise", 171 g_raid_md_promise_methods, 172 sizeof(struct g_raid_md_object), 173 .mdc_priority = 100 174}; 175 176 177static void 178g_raid_md_promise_print(struct promise_raid_conf *meta) 179{ 180 int i; 181 182 if (g_raid_debug < 1) 183 return; 184 185 printf("********* ATA Promise Metadata *********\n"); 186 printf("promise_id <%.24s>\n", meta->promise_id); 187 printf("disk %02x %02x %02x %02x %016jx\n", 188 meta->disk.flags, meta->disk.number, meta->disk.channel, 189 meta->disk.device, meta->disk.id); 190 printf("disk_offset %u\n", meta->disk_offset); 191 printf("disk_sectors %u\n", meta->disk_sectors); 192 printf("rebuild_lba %u\n", meta->rebuild_lba); 193 printf("generation %u\n", meta->generation); 194 printf("status 0x%02x\n", meta->status); 195 printf("type %u\n", meta->type); 196 printf("total_disks %u\n", meta->total_disks); 197 printf("stripe_shift %u\n", meta->stripe_shift); 198 printf("array_width %u\n", meta->array_width); 199 printf("array_number %u\n", meta->array_number); 200 printf("total_sectors %u\n", meta->total_sectors); 201 printf("cylinders %u\n", meta->cylinders); 202 printf("heads %u\n", meta->heads); 203 printf("sectors %u\n", meta->sectors); 204 printf("volume_id 0x%016jx\n", meta->volume_id); 205 printf("disks:\n"); 206 for (i = 0; i < PROMISE_MAX_DISKS; i++ ) { 207 printf(" %02x %02x %02x %02x %016jx\n", 208 meta->disks[i].flags, meta->disks[i].number, 209 meta->disks[i].channel, meta->disks[i].device, 210 meta->disks[i].id); 211 } 212 printf("name <%.32s>\n", meta->name); 213 printf("magic_3 0x%08x\n", meta->magic_3); 214 printf("rebuild_lba64 %ju\n", meta->rebuild_lba64); 215 printf("magic_4 0x%08x\n", meta->magic_4); 216 printf("magic_5 0x%08x\n", meta->magic_5); 217 printf("total_sectors_high 0x%08x\n", meta->total_sectors_high); 218 printf("=================================================\n"); 219} 220 221static struct promise_raid_conf * 222promise_meta_copy(struct promise_raid_conf *meta) 223{ 224 struct promise_raid_conf *nmeta; 225 226 nmeta = malloc(sizeof(*nmeta), M_MD_PROMISE, M_WAITOK); 227 memcpy(nmeta, meta, sizeof(*nmeta)); 228 return (nmeta); 229} 230 231static int 232promise_meta_find_disk(struct promise_raid_conf *meta, uint64_t id) 233{ 234 int pos; 235 236 for (pos = 0; pos < meta->total_disks; pos++) { 237 if (meta->disks[pos].id == id) 238 return (pos); 239 } 240 return (-1); 241} 242 243static int 244promise_meta_unused_range(struct promise_raid_conf **metaarr, int nsd, 245 uint32_t sectors, uint32_t *off, uint32_t *size) 246{ 247 uint32_t coff, csize; 248 int i, j; 249 250 sectors -= 131072; 251 *off = 0; 252 *size = 0; 253 coff = 0; 254 csize = sectors; 255 i = 0; 256 while (1) { 257 for (j = 0; j < nsd; j++) { 258 if (metaarr[j]->disk_offset >= coff) { 259 csize = MIN(csize, 260 metaarr[j]->disk_offset - coff); 261 } 262 } 263 if (csize > *size) { 264 *off = coff; 265 *size = csize; 266 } 267 if (i >= nsd) 268 break; 269 coff = metaarr[i]->disk_offset + metaarr[i]->disk_sectors; 270 csize = sectors - coff; 271 i++; 272 }; 273 return ((*size > 0) ? 1 : 0); 274} 275 276static int 277promise_meta_translate_disk(struct g_raid_volume *vol, int md_disk_pos) 278{ 279 int disk_pos, width; 280 281 if (md_disk_pos >= 0 && vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 282 width = vol->v_disks_count / 2; 283 disk_pos = (md_disk_pos / width) + 284 (md_disk_pos % width) * width; 285 } else 286 disk_pos = md_disk_pos; 287 return (disk_pos); 288} 289 290static void 291promise_meta_get_name(struct promise_raid_conf *meta, char *buf) 292{ 293 int i; 294 295 strncpy(buf, meta->name, 32); 296 buf[32] = 0; 297 for (i = 31; i >= 0; i--) { 298 if (buf[i] > 0x20) 299 break; 300 buf[i] = 0; 301 } 302} 303 304static void 305promise_meta_put_name(struct promise_raid_conf *meta, char *buf) 306{ 307 308 memset(meta->name, 0x20, 32); 309 memcpy(meta->name, buf, MIN(strlen(buf), 32)); 310} 311 312static int 313promise_meta_read(struct g_consumer *cp, struct promise_raid_conf **metaarr) 314{ 315 struct g_provider *pp; 316 struct promise_raid_conf *meta; 317 char *buf; 318 int error, i, subdisks; 319 uint32_t checksum, *ptr; 320 321 pp = cp->provider; 322 subdisks = 0; 323next: 324 /* Read metadata block. */ 325 buf = g_read_data(cp, pp->mediasize - pp->sectorsize * 326 (63 - subdisks * PROMISE_META_OFFSET), 327 pp->sectorsize * 4, &error); 328 if (buf == NULL) { 329 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).", 330 pp->name, error); 331 return (subdisks); 332 } 333 meta = (struct promise_raid_conf *)buf; 334 335 /* Check if this is an Promise RAID struct */ 336 if (strncmp(meta->promise_id, PROMISE_MAGIC, strlen(PROMISE_MAGIC)) && 337 strncmp(meta->promise_id, FREEBSD_MAGIC, strlen(FREEBSD_MAGIC))) { 338 if (subdisks == 0) 339 G_RAID_DEBUG(1, 340 "Promise signature check failed on %s", pp->name); 341 g_free(buf); 342 return (subdisks); 343 } 344 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK); 345 memcpy(meta, buf, MIN(sizeof(*meta), pp->sectorsize * 4)); 346 g_free(buf); 347 348 /* Check metadata checksum. */ 349 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++) 350 checksum += *ptr++; 351 if (checksum != meta->checksum) { 352 G_RAID_DEBUG(1, "Promise checksum check failed on %s", pp->name); 353 free(meta, M_MD_PROMISE); 354 return (subdisks); 355 } 356 357 if ((meta->integrity & PROMISE_I_VALID) == 0) { 358 G_RAID_DEBUG(1, "Promise metadata is invalid on %s", pp->name); 359 free(meta, M_MD_PROMISE); 360 return (subdisks); 361 } 362 363 if (meta->total_disks > PROMISE_MAX_DISKS) { 364 G_RAID_DEBUG(1, "Wrong number of disks on %s (%d)", 365 pp->name, meta->total_disks); 366 free(meta, M_MD_PROMISE); 367 return (subdisks); 368 } 369 370 /* Save this part and look for next. */ 371 *metaarr = meta; 372 metaarr++; 373 subdisks++; 374 if (subdisks < PROMISE_MAX_SUBDISKS) 375 goto next; 376 377 return (subdisks); 378} 379 380static int 381promise_meta_write(struct g_consumer *cp, 382 struct promise_raid_conf **metaarr, int nsd) 383{ 384 struct g_provider *pp; 385 struct promise_raid_conf *meta; 386 char *buf; 387 int error, i, subdisk, fake; 388 uint32_t checksum, *ptr, off, size; 389 390 pp = cp->provider; 391 subdisk = 0; 392 fake = 0; 393next: 394 buf = malloc(pp->sectorsize * 4, M_MD_PROMISE, M_WAITOK | M_ZERO); 395 meta = NULL; 396 if (subdisk < nsd) { 397 meta = metaarr[subdisk]; 398 } else if (!fake && promise_meta_unused_range(metaarr, nsd, 399 cp->provider->mediasize / cp->provider->sectorsize, 400 &off, &size)) { 401 /* Optionally add record for unused space. */ 402 meta = (struct promise_raid_conf *)buf; 403 memcpy(&meta->promise_id[0], PROMISE_MAGIC, 404 sizeof(PROMISE_MAGIC) - 1); 405 meta->dummy_0 = 0x00020000; 406 meta->integrity = PROMISE_I_VALID; 407 meta->disk.flags = PROMISE_F_ONLINE | PROMISE_F_VALID; 408 meta->disk.number = 0xff; 409 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0); 410 meta->disk_offset = off; 411 meta->disk_sectors = size; 412 meta->rebuild_lba = UINT32_MAX; 413 fake = 1; 414 } 415 if (meta != NULL) { 416 /* Recalculate checksum for case if metadata were changed. */ 417 meta->checksum = 0; 418 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++) 419 checksum += *ptr++; 420 meta->checksum = checksum; 421 memcpy(buf, meta, MIN(pp->sectorsize * 4, sizeof(*meta))); 422 } 423 error = g_write_data(cp, pp->mediasize - pp->sectorsize * 424 (63 - subdisk * PROMISE_META_OFFSET), 425 buf, pp->sectorsize * 4); 426 if (error != 0) { 427 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).", 428 pp->name, error); 429 } 430 free(buf, M_MD_PROMISE); 431 432 subdisk++; 433 if (subdisk < PROMISE_MAX_SUBDISKS) 434 goto next; 435 436 return (error); 437} 438 439static int 440promise_meta_erase(struct g_consumer *cp) 441{ 442 struct g_provider *pp; 443 char *buf; 444 int error, subdisk; 445 446 pp = cp->provider; 447 buf = malloc(4 * pp->sectorsize, M_MD_PROMISE, M_WAITOK | M_ZERO); 448 for (subdisk = 0; subdisk < PROMISE_MAX_SUBDISKS; subdisk++) { 449 error = g_write_data(cp, pp->mediasize - pp->sectorsize * 450 (63 - subdisk * PROMISE_META_OFFSET), 451 buf, 4 * pp->sectorsize); 452 if (error != 0) { 453 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).", 454 pp->name, error); 455 } 456 } 457 free(buf, M_MD_PROMISE); 458 return (error); 459} 460 461static int 462promise_meta_write_spare(struct g_consumer *cp) 463{ 464 struct promise_raid_conf *meta; 465 int error; 466 467 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO); 468 memcpy(&meta->promise_id[0], PROMISE_MAGIC, sizeof(PROMISE_MAGIC) - 1); 469 meta->dummy_0 = 0x00020000; 470 meta->integrity = PROMISE_I_VALID; 471 meta->disk.flags = PROMISE_F_SPARE | PROMISE_F_ONLINE | PROMISE_F_VALID; 472 meta->disk.number = 0xff; 473 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0); 474 meta->disk_sectors = cp->provider->mediasize / cp->provider->sectorsize; 475 meta->disk_sectors -= 131072; 476 meta->rebuild_lba = UINT32_MAX; 477 error = promise_meta_write(cp, &meta, 1); 478 free(meta, M_MD_PROMISE); 479 return (error); 480} 481 482static struct g_raid_volume * 483g_raid_md_promise_get_volume(struct g_raid_softc *sc, uint64_t id) 484{ 485 struct g_raid_volume *vol; 486 struct g_raid_md_promise_pervolume *pv; 487 488 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 489 pv = vol->v_md_data; 490 if (pv->pv_id == id) 491 break; 492 } 493 return (vol); 494} 495 496static int 497g_raid_md_promise_purge_volumes(struct g_raid_softc *sc) 498{ 499 struct g_raid_volume *vol, *tvol; 500 struct g_raid_md_promise_pervolume *pv; 501 int i, res; 502 503 res = 0; 504 TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) { 505 pv = vol->v_md_data; 506 if (!pv->pv_started || vol->v_stopping) 507 continue; 508 for (i = 0; i < vol->v_disks_count; i++) { 509 if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE) 510 break; 511 } 512 if (i >= vol->v_disks_count) { 513 g_raid_destroy_volume(vol); 514 res = 1; 515 } 516 } 517 return (res); 518} 519 520static int 521g_raid_md_promise_purge_disks(struct g_raid_softc *sc) 522{ 523 struct g_raid_disk *disk, *tdisk; 524 struct g_raid_volume *vol; 525 struct g_raid_md_promise_perdisk *pd; 526 int i, j, res; 527 528 res = 0; 529 TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) { 530 if (disk->d_state == G_RAID_DISK_S_SPARE) 531 continue; 532 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 533 534 /* Scan for deleted volumes. */ 535 for (i = 0; i < pd->pd_subdisks; ) { 536 vol = g_raid_md_promise_get_volume(sc, 537 pd->pd_meta[i]->volume_id); 538 if (vol != NULL && !vol->v_stopping) { 539 i++; 540 continue; 541 } 542 free(pd->pd_meta[i], M_MD_PROMISE); 543 for (j = i; j < pd->pd_subdisks - 1; j++) 544 pd->pd_meta[j] = pd->pd_meta[j + 1]; 545 pd->pd_meta[PROMISE_MAX_SUBDISKS - 1] = NULL; 546 pd->pd_subdisks--; 547 pd->pd_updated = 1; 548 } 549 550 /* If there is no metadata left - erase and delete disk. */ 551 if (pd->pd_subdisks == 0) { 552 promise_meta_erase(disk->d_consumer); 553 g_raid_destroy_disk(disk); 554 res = 1; 555 } 556 } 557 return (res); 558} 559 560static int 561g_raid_md_promise_supported(int level, int qual, int disks, int force) 562{ 563 564 if (disks > PROMISE_MAX_DISKS) 565 return (0); 566 switch (level) { 567 case G_RAID_VOLUME_RL_RAID0: 568 if (disks < 1) 569 return (0); 570 if (!force && disks < 2) 571 return (0); 572 break; 573 case G_RAID_VOLUME_RL_RAID1: 574 if (disks < 1) 575 return (0); 576 if (!force && (disks != 2)) 577 return (0); 578 break; 579 case G_RAID_VOLUME_RL_RAID1E: 580 if (disks < 2) 581 return (0); 582 if (disks % 2 != 0) 583 return (0); 584 if (!force && (disks != 4)) 585 return (0); 586 break; 587 case G_RAID_VOLUME_RL_SINGLE: 588 if (disks != 1) 589 return (0); 590 break; 591 case G_RAID_VOLUME_RL_CONCAT: 592 if (disks < 2) 593 return (0); 594 break; 595 case G_RAID_VOLUME_RL_RAID5: 596 if (disks < 3) 597 return (0); 598 break; 599 default: 600 return (0); 601 } 602 if (qual != G_RAID_VOLUME_RLQ_NONE) 603 return (0); 604 return (1); 605} 606 607static int 608g_raid_md_promise_start_disk(struct g_raid_disk *disk, int sdn, 609 struct g_raid_volume *vol) 610{ 611 struct g_raid_softc *sc; 612 struct g_raid_subdisk *sd; 613 struct g_raid_md_promise_perdisk *pd; 614 struct g_raid_md_promise_pervolume *pv; 615 struct promise_raid_conf *meta; 616 off_t size; 617 int disk_pos, md_disk_pos, i, resurrection = 0; 618 uint32_t eoff, esize; 619 620 sc = disk->d_softc; 621 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 622 623 pv = vol->v_md_data; 624 meta = pv->pv_meta; 625 626 if (sdn >= 0) { 627 /* Find disk position in metadata by it's serial. */ 628 md_disk_pos = promise_meta_find_disk(meta, pd->pd_meta[sdn]->disk.id); 629 /* For RAID0+1 we need to translate order. */ 630 disk_pos = promise_meta_translate_disk(vol, md_disk_pos); 631 } else { 632 md_disk_pos = -1; 633 disk_pos = -1; 634 } 635 if (disk_pos < 0) { 636 G_RAID_DEBUG1(1, sc, "Disk %s is not part of the volume %s", 637 g_raid_get_diskname(disk), vol->v_name); 638 /* Failed stale disk is useless for us. */ 639 if (sdn >= 0 && 640 pd->pd_meta[sdn]->disk.flags & PROMISE_F_DOWN) { 641 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED); 642 return (0); 643 } 644 /* If we were given specific metadata subdisk - erase it. */ 645 if (sdn >= 0) { 646 free(pd->pd_meta[sdn], M_MD_PROMISE); 647 for (i = sdn; i < pd->pd_subdisks - 1; i++) 648 pd->pd_meta[i] = pd->pd_meta[i + 1]; 649 pd->pd_meta[PROMISE_MAX_SUBDISKS - 1] = NULL; 650 pd->pd_subdisks--; 651 } 652 /* If we are in the start process, that's all for now. */ 653 if (!pv->pv_started) 654 goto nofit; 655 /* 656 * If we have already started - try to get use of the disk. 657 * Try to replace OFFLINE disks first, then FAILED. 658 */ 659 promise_meta_unused_range(pd->pd_meta, pd->pd_subdisks, 660 disk->d_consumer->provider->mediasize / 661 disk->d_consumer->provider->sectorsize, 662 &eoff, &esize); 663 if (esize == 0) { 664 G_RAID_DEBUG1(1, sc, "No free space on disk %s", 665 g_raid_get_diskname(disk)); 666 goto nofit; 667 } 668 size = INT64_MAX; 669 for (i = 0; i < vol->v_disks_count; i++) { 670 sd = &vol->v_subdisks[i]; 671 if (sd->sd_state != G_RAID_SUBDISK_S_NONE) 672 size = sd->sd_size; 673 if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED && 674 (disk_pos < 0 || 675 vol->v_subdisks[i].sd_state < sd->sd_state)) 676 disk_pos = i; 677 } 678 if (disk_pos >= 0 && 679 vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT && 680 (off_t)esize * 512 < size) { 681 G_RAID_DEBUG1(1, sc, "Disk %s free space " 682 "is too small (%ju < %ju)", 683 g_raid_get_diskname(disk), 684 (off_t)esize * 512, size); 685 disk_pos = -1; 686 } 687 if (disk_pos >= 0) { 688 if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT) 689 esize = size / 512; 690 /* For RAID0+1 we need to translate order. */ 691 md_disk_pos = promise_meta_translate_disk(vol, disk_pos); 692 } else { 693nofit: 694 if (pd->pd_subdisks == 0) { 695 g_raid_change_disk_state(disk, 696 G_RAID_DISK_S_SPARE); 697 } 698 return (0); 699 } 700 G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s", 701 g_raid_get_diskname(disk), disk_pos, vol->v_name); 702 resurrection = 1; 703 } 704 705 sd = &vol->v_subdisks[disk_pos]; 706 707 if (resurrection && sd->sd_disk != NULL) { 708 g_raid_change_disk_state(sd->sd_disk, 709 G_RAID_DISK_S_STALE_FAILED); 710 TAILQ_REMOVE(&sd->sd_disk->d_subdisks, 711 sd, sd_next); 712 } 713 vol->v_subdisks[disk_pos].sd_disk = disk; 714 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 715 716 /* Welcome the new disk. */ 717 if (resurrection) 718 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 719 else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) 720 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED); 721 else 722 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 723 724 if (resurrection) { 725 sd->sd_offset = (off_t)eoff * 512; 726 sd->sd_size = (off_t)esize * 512; 727 } else { 728 sd->sd_offset = (off_t)pd->pd_meta[sdn]->disk_offset * 512; 729 sd->sd_size = (off_t)pd->pd_meta[sdn]->disk_sectors * 512; 730 } 731 732 if (resurrection) { 733 /* Stale disk, almost same as new. */ 734 g_raid_change_subdisk_state(sd, 735 G_RAID_SUBDISK_S_NEW); 736 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) { 737 /* Failed disk. */ 738 g_raid_change_subdisk_state(sd, 739 G_RAID_SUBDISK_S_FAILED); 740 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_REDIR) { 741 /* Rebuilding disk. */ 742 g_raid_change_subdisk_state(sd, 743 G_RAID_SUBDISK_S_REBUILD); 744 if (pd->pd_meta[sdn]->generation != meta->generation) 745 sd->sd_rebuild_pos = 0; 746 else { 747 sd->sd_rebuild_pos = 748 (off_t)pd->pd_meta[sdn]->rebuild_lba * 512; 749 } 750 } else if (!(meta->disks[md_disk_pos].flags & PROMISE_F_ONLINE)) { 751 /* Rebuilding disk. */ 752 g_raid_change_subdisk_state(sd, 753 G_RAID_SUBDISK_S_NEW); 754 } else if (pd->pd_meta[sdn]->generation != meta->generation || 755 (meta->status & PROMISE_S_MARKED)) { 756 /* Stale disk or dirty volume (unclean shutdown). */ 757 g_raid_change_subdisk_state(sd, 758 G_RAID_SUBDISK_S_STALE); 759 } else { 760 /* Up to date disk. */ 761 g_raid_change_subdisk_state(sd, 762 G_RAID_SUBDISK_S_ACTIVE); 763 } 764 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 765 G_RAID_EVENT_SUBDISK); 766 767 return (resurrection); 768} 769 770static void 771g_raid_md_promise_refill(struct g_raid_softc *sc) 772{ 773 struct g_raid_volume *vol; 774 struct g_raid_subdisk *sd; 775 struct g_raid_disk *disk; 776 struct g_raid_md_object *md; 777 struct g_raid_md_promise_perdisk *pd; 778 struct g_raid_md_promise_pervolume *pv; 779 int update, updated, i, bad; 780 781 md = sc->sc_md; 782restart: 783 updated = 0; 784 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 785 pv = vol->v_md_data; 786 if (!pv->pv_started || vol->v_stopping) 787 continue; 788 789 /* Search for subdisk that needs replacement. */ 790 bad = 0; 791 for (i = 0; i < vol->v_disks_count; i++) { 792 sd = &vol->v_subdisks[i]; 793 if (sd->sd_state == G_RAID_SUBDISK_S_NONE || 794 sd->sd_state == G_RAID_SUBDISK_S_FAILED) 795 bad = 1; 796 } 797 if (!bad) 798 continue; 799 800 G_RAID_DEBUG1(1, sc, "Volume %s is not complete, " 801 "trying to refill.", vol->v_name); 802 803 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 804 /* Skip failed. */ 805 if (disk->d_state < G_RAID_DISK_S_SPARE) 806 continue; 807 /* Skip already used by this volume. */ 808 for (i = 0; i < vol->v_disks_count; i++) { 809 sd = &vol->v_subdisks[i]; 810 if (sd->sd_disk == disk) 811 break; 812 } 813 if (i < vol->v_disks_count) 814 continue; 815 816 /* Try to use disk if it has empty extents. */ 817 pd = disk->d_md_data; 818 if (pd->pd_subdisks < PROMISE_MAX_SUBDISKS) { 819 update = 820 g_raid_md_promise_start_disk(disk, -1, vol); 821 } else 822 update = 0; 823 if (update) { 824 updated = 1; 825 g_raid_md_write_promise(md, vol, NULL, disk); 826 break; 827 } 828 } 829 } 830 if (updated) 831 goto restart; 832} 833 834static void 835g_raid_md_promise_start(struct g_raid_volume *vol) 836{ 837 struct g_raid_softc *sc; 838 struct g_raid_subdisk *sd; 839 struct g_raid_disk *disk; 840 struct g_raid_md_object *md; 841 struct g_raid_md_promise_perdisk *pd; 842 struct g_raid_md_promise_pervolume *pv; 843 struct promise_raid_conf *meta; 844 int i; 845 846 sc = vol->v_softc; 847 md = sc->sc_md; 848 pv = vol->v_md_data; 849 meta = pv->pv_meta; 850 851 if (meta->type == PROMISE_T_RAID0) 852 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0; 853 else if (meta->type == PROMISE_T_RAID1) { 854 if (meta->array_width == 1) 855 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1; 856 else 857 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E; 858 } else if (meta->type == PROMISE_T_RAID3) 859 vol->v_raid_level = G_RAID_VOLUME_RL_RAID3; 860 else if (meta->type == PROMISE_T_RAID5) 861 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5; 862 else if (meta->type == PROMISE_T_SPAN) 863 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT; 864 else if (meta->type == PROMISE_T_JBOD) 865 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 866 else 867 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN; 868 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 869 vol->v_strip_size = 512 << meta->stripe_shift; //ZZZ 870 vol->v_disks_count = meta->total_disks; 871 vol->v_mediasize = (off_t)meta->total_sectors * 512; //ZZZ 872 if (meta->total_sectors_high < 256) /* If value looks sane. */ 873 vol->v_mediasize |= 874 ((off_t)meta->total_sectors_high << 32) * 512; //ZZZ 875 vol->v_sectorsize = 512; //ZZZ 876 for (i = 0; i < vol->v_disks_count; i++) { 877 sd = &vol->v_subdisks[i]; 878 sd->sd_offset = (off_t)meta->disk_offset * 512; //ZZZ 879 sd->sd_size = (off_t)meta->disk_sectors * 512; //ZZZ 880 } 881 g_raid_start_volume(vol); 882 883 /* Make all disks found till the moment take their places. */ 884 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 885 pd = disk->d_md_data; 886 for (i = 0; i < pd->pd_subdisks; i++) { 887 if (pd->pd_meta[i]->volume_id == meta->volume_id) 888 g_raid_md_promise_start_disk(disk, i, vol); 889 } 890 } 891 892 pv->pv_started = 1; 893 callout_stop(&pv->pv_start_co); 894 G_RAID_DEBUG1(0, sc, "Volume started."); 895 g_raid_md_write_promise(md, vol, NULL, NULL); 896 897 /* Pickup any STALE/SPARE disks to refill array if needed. */ 898 g_raid_md_promise_refill(sc); 899 900 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME); 901} 902 903static void 904g_raid_promise_go(void *arg) 905{ 906 struct g_raid_volume *vol; 907 struct g_raid_softc *sc; 908 struct g_raid_md_promise_pervolume *pv; 909 910 vol = arg; 911 pv = vol->v_md_data; 912 sc = vol->v_softc; 913 if (!pv->pv_started) { 914 G_RAID_DEBUG1(0, sc, "Force volume start due to timeout."); 915 g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD, 916 G_RAID_EVENT_VOLUME); 917 } 918} 919 920static void 921g_raid_md_promise_new_disk(struct g_raid_disk *disk) 922{ 923 struct g_raid_softc *sc; 924 struct g_raid_md_object *md; 925 struct promise_raid_conf *pdmeta; 926 struct g_raid_md_promise_perdisk *pd; 927 struct g_raid_md_promise_pervolume *pv; 928 struct g_raid_volume *vol; 929 int i; 930 char buf[33]; 931 932 sc = disk->d_softc; 933 md = sc->sc_md; 934 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 935 936 if (pd->pd_subdisks == 0) { 937 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE); 938 g_raid_md_promise_refill(sc); 939 return; 940 } 941 942 for (i = 0; i < pd->pd_subdisks; i++) { 943 pdmeta = pd->pd_meta[i]; 944 945 /* Look for volume with matching ID. */ 946 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id); 947 if (vol == NULL) { 948 promise_meta_get_name(pdmeta, buf); 949 vol = g_raid_create_volume(sc, buf, pdmeta->array_number); 950 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO); 951 pv->pv_id = pdmeta->volume_id; 952 vol->v_md_data = pv; 953 callout_init(&pv->pv_start_co, 1); 954 callout_reset(&pv->pv_start_co, 955 g_raid_start_timeout * hz, 956 g_raid_promise_go, vol); 957 } else 958 pv = vol->v_md_data; 959 960 /* If we haven't started yet - check metadata freshness. */ 961 if (pv->pv_meta == NULL || !pv->pv_started) { 962 if (pv->pv_meta == NULL || 963 ((int16_t)(pdmeta->generation - pv->pv_generation)) > 0) { 964 G_RAID_DEBUG1(1, sc, "Newer disk"); 965 if (pv->pv_meta != NULL) 966 free(pv->pv_meta, M_MD_PROMISE); 967 pv->pv_meta = promise_meta_copy(pdmeta); 968 pv->pv_generation = pv->pv_meta->generation; 969 pv->pv_disks_present = 1; 970 } else if (pdmeta->generation == pv->pv_generation) { 971 pv->pv_disks_present++; 972 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)", 973 pv->pv_disks_present, 974 pv->pv_meta->total_disks); 975 } else { 976 G_RAID_DEBUG1(1, sc, "Older disk"); 977 } 978 } 979 } 980 981 for (i = 0; i < pd->pd_subdisks; i++) { 982 pdmeta = pd->pd_meta[i]; 983 984 /* Look for volume with matching ID. */ 985 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id); 986 if (vol == NULL) 987 continue; 988 pv = vol->v_md_data; 989 990 if (pv->pv_started) { 991 if (g_raid_md_promise_start_disk(disk, i, vol)) 992 g_raid_md_write_promise(md, vol, NULL, NULL); 993 } else { 994 /* If we collected all needed disks - start array. */ 995 if (pv->pv_disks_present == pv->pv_meta->total_disks) 996 g_raid_md_promise_start(vol); 997 } 998 } 999} 1000 1001static int 1002g_raid_md_create_promise(struct g_raid_md_object *md, struct g_class *mp, 1003 struct g_geom **gp) 1004{ 1005 struct g_geom *geom; 1006 struct g_raid_softc *sc; 1007 1008 /* Search for existing node. */ 1009 LIST_FOREACH(geom, &mp->geom, geom) { 1010 sc = geom->softc; 1011 if (sc == NULL) 1012 continue; 1013 if (sc->sc_stopping != 0) 1014 continue; 1015 if (sc->sc_md->mdo_class != md->mdo_class) 1016 continue; 1017 break; 1018 } 1019 if (geom != NULL) { 1020 *gp = geom; 1021 return (G_RAID_MD_TASTE_EXISTING); 1022 } 1023 1024 /* Create new one if not found. */ 1025 sc = g_raid_create_node(mp, "Promise", md); 1026 if (sc == NULL) 1027 return (G_RAID_MD_TASTE_FAIL); 1028 md->mdo_softc = sc; 1029 *gp = sc->sc_geom; 1030 return (G_RAID_MD_TASTE_NEW); 1031} 1032 1033static int 1034g_raid_md_taste_promise(struct g_raid_md_object *md, struct g_class *mp, 1035 struct g_consumer *cp, struct g_geom **gp) 1036{ 1037 struct g_consumer *rcp; 1038 struct g_provider *pp; 1039 struct g_raid_softc *sc; 1040 struct g_raid_disk *disk; 1041 struct promise_raid_conf *meta, *metaarr[4]; 1042 struct g_raid_md_promise_perdisk *pd; 1043 struct g_geom *geom; 1044 int error, i, j, result, len, subdisks; 1045 char name[16]; 1046 uint16_t vendor; 1047 1048 G_RAID_DEBUG(1, "Tasting Promise on %s", cp->provider->name); 1049 pp = cp->provider; 1050 1051 /* Read metadata from device. */ 1052 meta = NULL; 1053 vendor = 0xffff; 1054 if (g_access(cp, 1, 0, 0) != 0) 1055 return (G_RAID_MD_TASTE_FAIL); 1056 g_topology_unlock(); 1057 len = 2; 1058 if (pp->geom->rank == 1) 1059 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor); 1060 subdisks = promise_meta_read(cp, metaarr); 1061 g_topology_lock(); 1062 g_access(cp, -1, 0, 0); 1063 if (subdisks == 0) { 1064 if (g_raid_aggressive_spare) { 1065 if (vendor == 0x105a || vendor == 0x1002) { 1066 G_RAID_DEBUG(1, 1067 "No Promise metadata, forcing spare."); 1068 goto search; 1069 } else { 1070 G_RAID_DEBUG(1, 1071 "Promise/ATI vendor mismatch " 1072 "0x%04x != 0x105a/0x1002", 1073 vendor); 1074 } 1075 } 1076 return (G_RAID_MD_TASTE_FAIL); 1077 } 1078 1079 /* Metadata valid. Print it. */ 1080 for (i = 0; i < subdisks; i++) 1081 g_raid_md_promise_print(metaarr[i]); 1082 1083 /* Purge meaningless (empty/spare) records. */ 1084 for (i = 0; i < subdisks; ) { 1085 if (metaarr[i]->disk.flags & PROMISE_F_ASSIGNED) { 1086 i++; 1087 continue; 1088 } 1089 free(metaarr[i], M_MD_PROMISE); 1090 for (j = i; j < subdisks - 1; j++) 1091 metaarr[i] = metaarr[j + 1]; 1092 metaarr[PROMISE_MAX_SUBDISKS - 1] = NULL; 1093 subdisks--; 1094 } 1095 1096search: 1097 /* Search for matching node. */ 1098 sc = NULL; 1099 LIST_FOREACH(geom, &mp->geom, geom) { 1100 sc = geom->softc; 1101 if (sc == NULL) 1102 continue; 1103 if (sc->sc_stopping != 0) 1104 continue; 1105 if (sc->sc_md->mdo_class != md->mdo_class) 1106 continue; 1107 break; 1108 } 1109 1110 /* Found matching node. */ 1111 if (geom != NULL) { 1112 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name); 1113 result = G_RAID_MD_TASTE_EXISTING; 1114 1115 } else { /* Not found matching node -- create one. */ 1116 result = G_RAID_MD_TASTE_NEW; 1117 snprintf(name, sizeof(name), "Promise"); 1118 sc = g_raid_create_node(mp, name, md); 1119 md->mdo_softc = sc; 1120 geom = sc->sc_geom; 1121 } 1122 1123 rcp = g_new_consumer(geom); 1124 g_attach(rcp, pp); 1125 if (g_access(rcp, 1, 1, 1) != 0) 1126 ; //goto fail1; 1127 1128 g_topology_unlock(); 1129 sx_xlock(&sc->sc_lock); 1130 1131 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1132 pd->pd_subdisks = subdisks; 1133 for (i = 0; i < subdisks; i++) 1134 pd->pd_meta[i] = metaarr[i]; 1135 disk = g_raid_create_disk(sc); 1136 disk->d_md_data = (void *)pd; 1137 disk->d_consumer = rcp; 1138 rcp->private = disk; 1139 1140 /* Read kernel dumping information. */ 1141 disk->d_kd.offset = 0; 1142 disk->d_kd.length = OFF_MAX; 1143 len = sizeof(disk->d_kd); 1144 error = g_io_getattr("GEOM::kerneldump", rcp, &len, &disk->d_kd); 1145 if (disk->d_kd.di.dumper == NULL) 1146 G_RAID_DEBUG1(2, sc, "Dumping not supported by %s: %d.", 1147 rcp->provider->name, error); 1148 1149 g_raid_md_promise_new_disk(disk); 1150 1151 sx_xunlock(&sc->sc_lock); 1152 g_topology_lock(); 1153 *gp = geom; 1154 return (result); 1155} 1156 1157static int 1158g_raid_md_event_promise(struct g_raid_md_object *md, 1159 struct g_raid_disk *disk, u_int event) 1160{ 1161 struct g_raid_softc *sc; 1162 1163 sc = md->mdo_softc; 1164 if (disk == NULL) 1165 return (-1); 1166 switch (event) { 1167 case G_RAID_DISK_E_DISCONNECTED: 1168 /* Delete disk. */ 1169 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1170 g_raid_destroy_disk(disk); 1171 g_raid_md_promise_purge_volumes(sc); 1172 1173 /* Write updated metadata to all disks. */ 1174 g_raid_md_write_promise(md, NULL, NULL, NULL); 1175 1176 /* Check if anything left. */ 1177 if (g_raid_ndisks(sc, -1) == 0) 1178 g_raid_destroy_node(sc, 0); 1179 else 1180 g_raid_md_promise_refill(sc); 1181 return (0); 1182 } 1183 return (-2); 1184} 1185 1186static int 1187g_raid_md_volume_event_promise(struct g_raid_md_object *md, 1188 struct g_raid_volume *vol, u_int event) 1189{ 1190 struct g_raid_md_promise_pervolume *pv; 1191 1192 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1193 switch (event) { 1194 case G_RAID_VOLUME_E_STARTMD: 1195 if (!pv->pv_started) 1196 g_raid_md_promise_start(vol); 1197 return (0); 1198 } 1199 return (-2); 1200} 1201 1202static int 1203g_raid_md_ctl_promise(struct g_raid_md_object *md, 1204 struct gctl_req *req) 1205{ 1206 struct g_raid_softc *sc; 1207 struct g_raid_volume *vol, *vol1; 1208 struct g_raid_subdisk *sd; 1209 struct g_raid_disk *disk, *disks[PROMISE_MAX_DISKS]; 1210 struct g_raid_md_promise_perdisk *pd; 1211 struct g_raid_md_promise_pervolume *pv; 1212 struct g_consumer *cp; 1213 struct g_provider *pp; 1214 char arg[16]; 1215 const char *verb, *volname, *levelname, *diskname; 1216 char *tmp; 1217 int *nargs, *force; 1218 off_t size, sectorsize, strip; 1219 intmax_t *sizearg, *striparg; 1220 uint32_t offs[PROMISE_MAX_DISKS], esize; 1221 int numdisks, i, len, level, qual; 1222 int error; 1223 1224 sc = md->mdo_softc; 1225 verb = gctl_get_param(req, "verb", NULL); 1226 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 1227 error = 0; 1228 if (strcmp(verb, "label") == 0) { 1229 1230 if (*nargs < 4) { 1231 gctl_error(req, "Invalid number of arguments."); 1232 return (-1); 1233 } 1234 volname = gctl_get_asciiparam(req, "arg1"); 1235 if (volname == NULL) { 1236 gctl_error(req, "No volume name."); 1237 return (-2); 1238 } 1239 levelname = gctl_get_asciiparam(req, "arg2"); 1240 if (levelname == NULL) { 1241 gctl_error(req, "No RAID level."); 1242 return (-3); 1243 } 1244 if (g_raid_volume_str2level(levelname, &level, &qual)) { 1245 gctl_error(req, "Unknown RAID level '%s'.", levelname); 1246 return (-4); 1247 } 1248 numdisks = *nargs - 3; 1249 force = gctl_get_paraml(req, "force", sizeof(*force)); 1250 if (!g_raid_md_promise_supported(level, qual, numdisks, 1251 force ? *force : 0)) { 1252 gctl_error(req, "Unsupported RAID level " 1253 "(0x%02x/0x%02x), or number of disks (%d).", 1254 level, qual, numdisks); 1255 return (-5); 1256 } 1257 1258 /* Search for disks, connect them and probe. */ 1259 size = INT64_MAX; 1260 sectorsize = 0; 1261 bzero(disks, sizeof(disks)); 1262 bzero(offs, sizeof(offs)); 1263 for (i = 0; i < numdisks; i++) { 1264 snprintf(arg, sizeof(arg), "arg%d", i + 3); 1265 diskname = gctl_get_asciiparam(req, arg); 1266 if (diskname == NULL) { 1267 gctl_error(req, "No disk name (%s).", arg); 1268 error = -6; 1269 break; 1270 } 1271 if (strcmp(diskname, "NONE") == 0) 1272 continue; 1273 1274 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1275 if (disk->d_consumer != NULL && 1276 disk->d_consumer->provider != NULL && 1277 strcmp(disk->d_consumer->provider->name, 1278 diskname) == 0) 1279 break; 1280 } 1281 if (disk != NULL) { 1282 if (disk->d_state != G_RAID_DISK_S_ACTIVE) { 1283 gctl_error(req, "Disk '%s' is in a " 1284 "wrong state (%s).", diskname, 1285 g_raid_disk_state2str(disk->d_state)); 1286 error = -7; 1287 break; 1288 } 1289 pd = disk->d_md_data; 1290 if (pd->pd_subdisks >= PROMISE_MAX_SUBDISKS) { 1291 gctl_error(req, "Disk '%s' already " 1292 "used by %d volumes.", 1293 diskname, pd->pd_subdisks); 1294 error = -7; 1295 break; 1296 } 1297 pp = disk->d_consumer->provider; 1298 disks[i] = disk; 1299 promise_meta_unused_range(pd->pd_meta, 1300 pd->pd_subdisks, 1301 pp->mediasize / pp->sectorsize, 1302 &offs[i], &esize); 1303 size = MIN(size, (off_t)esize * pp->sectorsize); 1304 sectorsize = MAX(sectorsize, pp->sectorsize); 1305 continue; 1306 } 1307 1308 g_topology_lock(); 1309 cp = g_raid_open_consumer(sc, diskname); 1310 if (cp == NULL) { 1311 gctl_error(req, "Can't open disk '%s'.", 1312 diskname); 1313 g_topology_unlock(); 1314 error = -8; 1315 break; 1316 } 1317 pp = cp->provider; 1318 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1319 disk = g_raid_create_disk(sc); 1320 disk->d_md_data = (void *)pd; 1321 disk->d_consumer = cp; 1322 disks[i] = disk; 1323 cp->private = disk; 1324 g_topology_unlock(); 1325 1326 if (pp->mediasize / pp->sectorsize > UINT32_MAX) { 1327 gctl_error(req, 1328 "Disk '%s' is too big.", diskname); 1329 error = -8; 1330 break; 1331 } 1332 1333 /* Read kernel dumping information. */ 1334 disk->d_kd.offset = 0; 1335 disk->d_kd.length = OFF_MAX; 1336 len = sizeof(disk->d_kd); 1337 g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd); 1338 if (disk->d_kd.di.dumper == NULL) 1339 G_RAID_DEBUG1(2, sc, 1340 "Dumping not supported by %s.", 1341 cp->provider->name); 1342 1343 /* Reserve some space for metadata. */ 1344 size = MIN(size, pp->mediasize - 131072llu * pp->sectorsize); 1345 sectorsize = MAX(sectorsize, pp->sectorsize); 1346 } 1347 if (error != 0) { 1348 for (i = 0; i < numdisks; i++) { 1349 if (disks[i] != NULL && 1350 disks[i]->d_state == G_RAID_DISK_S_NONE) 1351 g_raid_destroy_disk(disks[i]); 1352 } 1353 return (error); 1354 } 1355 1356 if (sectorsize <= 0) { 1357 gctl_error(req, "Can't get sector size."); 1358 return (-8); 1359 } 1360 1361 /* Handle size argument. */ 1362 len = sizeof(*sizearg); 1363 sizearg = gctl_get_param(req, "size", &len); 1364 if (sizearg != NULL && len == sizeof(*sizearg) && 1365 *sizearg > 0) { 1366 if (*sizearg > size) { 1367 gctl_error(req, "Size too big %lld > %lld.", 1368 (long long)*sizearg, (long long)size); 1369 return (-9); 1370 } 1371 size = *sizearg; 1372 } 1373 1374 /* Handle strip argument. */ 1375 strip = 131072; 1376 len = sizeof(*striparg); 1377 striparg = gctl_get_param(req, "strip", &len); 1378 if (striparg != NULL && len == sizeof(*striparg) && 1379 *striparg > 0) { 1380 if (*striparg < sectorsize) { 1381 gctl_error(req, "Strip size too small."); 1382 return (-10); 1383 } 1384 if (*striparg % sectorsize != 0) { 1385 gctl_error(req, "Incorrect strip size."); 1386 return (-11); 1387 } 1388 strip = *striparg; 1389 } 1390 1391 /* Round size down to strip or sector. */ 1392 if (level == G_RAID_VOLUME_RL_RAID1 || 1393 level == G_RAID_VOLUME_RL_SINGLE || 1394 level == G_RAID_VOLUME_RL_CONCAT) 1395 size -= (size % sectorsize); 1396 else if (level == G_RAID_VOLUME_RL_RAID1E && 1397 (numdisks & 1) != 0) 1398 size -= (size % (2 * strip)); 1399 else 1400 size -= (size % strip); 1401 if (size <= 0) { 1402 gctl_error(req, "Size too small."); 1403 return (-13); 1404 } 1405 if (size > 0xffffffffllu * sectorsize) { 1406 gctl_error(req, "Size too big."); 1407 return (-14); 1408 } 1409 1410 /* We have all we need, create things: volume, ... */ 1411 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO); 1412 arc4rand(&pv->pv_id, sizeof(pv->pv_id), 0); 1413 pv->pv_generation = 0; 1414 pv->pv_started = 1; 1415 vol = g_raid_create_volume(sc, volname, -1); 1416 vol->v_md_data = pv; 1417 vol->v_raid_level = level; 1418 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 1419 vol->v_strip_size = strip; 1420 vol->v_disks_count = numdisks; 1421 if (level == G_RAID_VOLUME_RL_RAID0 || 1422 level == G_RAID_VOLUME_RL_CONCAT || 1423 level == G_RAID_VOLUME_RL_SINGLE) 1424 vol->v_mediasize = size * numdisks; 1425 else if (level == G_RAID_VOLUME_RL_RAID1) 1426 vol->v_mediasize = size; 1427 else if (level == G_RAID_VOLUME_RL_RAID3 || 1428 level == G_RAID_VOLUME_RL_RAID5) 1429 vol->v_mediasize = size * (numdisks - 1); 1430 else { /* RAID1E */ 1431 vol->v_mediasize = ((size * numdisks) / strip / 2) * 1432 strip; 1433 } 1434 vol->v_sectorsize = sectorsize; 1435 g_raid_start_volume(vol); 1436 1437 /* , and subdisks. */ 1438 for (i = 0; i < numdisks; i++) { 1439 disk = disks[i]; 1440 sd = &vol->v_subdisks[i]; 1441 sd->sd_disk = disk; 1442 sd->sd_offset = (off_t)offs[i] * 512; 1443 sd->sd_size = size; 1444 if (disk == NULL) 1445 continue; 1446 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 1447 g_raid_change_disk_state(disk, 1448 G_RAID_DISK_S_ACTIVE); 1449 g_raid_change_subdisk_state(sd, 1450 G_RAID_SUBDISK_S_ACTIVE); 1451 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 1452 G_RAID_EVENT_SUBDISK); 1453 } 1454 1455 /* Write metadata based on created entities. */ 1456 G_RAID_DEBUG1(0, sc, "Array started."); 1457 g_raid_md_write_promise(md, vol, NULL, NULL); 1458 1459 /* Pickup any STALE/SPARE disks to refill array if needed. */ 1460 g_raid_md_promise_refill(sc); 1461 1462 g_raid_event_send(vol, G_RAID_VOLUME_E_START, 1463 G_RAID_EVENT_VOLUME); 1464 return (0); 1465 } 1466 if (strcmp(verb, "add") == 0) { 1467 1468 gctl_error(req, "`add` command is not applicable, " 1469 "use `label` instead."); 1470 return (-99); 1471 } 1472 if (strcmp(verb, "delete") == 0) { 1473 1474 /* Full node destruction. */ 1475 if (*nargs == 1) { 1476 /* Check if some volume is still open. */ 1477 force = gctl_get_paraml(req, "force", sizeof(*force)); 1478 if (force != NULL && *force == 0 && 1479 g_raid_nopens(sc) != 0) { 1480 gctl_error(req, "Some volume is still open."); 1481 return (-4); 1482 } 1483 1484 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1485 if (disk->d_consumer) 1486 promise_meta_erase(disk->d_consumer); 1487 } 1488 g_raid_destroy_node(sc, 0); 1489 return (0); 1490 } 1491 1492 /* Destroy specified volume. If it was last - all node. */ 1493 if (*nargs != 2) { 1494 gctl_error(req, "Invalid number of arguments."); 1495 return (-1); 1496 } 1497 volname = gctl_get_asciiparam(req, "arg1"); 1498 if (volname == NULL) { 1499 gctl_error(req, "No volume name."); 1500 return (-2); 1501 } 1502 1503 /* Search for volume. */ 1504 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1505 if (strcmp(vol->v_name, volname) == 0) 1506 break; 1507 } 1508 if (vol == NULL) { 1509 i = strtol(volname, &tmp, 10); 1510 if (verb != volname && tmp[0] == 0) { 1511 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1512 if (vol->v_global_id == i) 1513 break; 1514 } 1515 } 1516 } 1517 if (vol == NULL) { 1518 gctl_error(req, "Volume '%s' not found.", volname); 1519 return (-3); 1520 } 1521 1522 /* Check if volume is still open. */ 1523 force = gctl_get_paraml(req, "force", sizeof(*force)); 1524 if (force != NULL && *force == 0 && 1525 vol->v_provider_open != 0) { 1526 gctl_error(req, "Volume is still open."); 1527 return (-4); 1528 } 1529 1530 /* Destroy volume and potentially node. */ 1531 i = 0; 1532 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next) 1533 i++; 1534 if (i >= 2) { 1535 g_raid_destroy_volume(vol); 1536 g_raid_md_promise_purge_disks(sc); 1537 g_raid_md_write_promise(md, NULL, NULL, NULL); 1538 } else { 1539 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1540 if (disk->d_consumer) 1541 promise_meta_erase(disk->d_consumer); 1542 } 1543 g_raid_destroy_node(sc, 0); 1544 } 1545 return (0); 1546 } 1547 if (strcmp(verb, "remove") == 0 || 1548 strcmp(verb, "fail") == 0) { 1549 if (*nargs < 2) { 1550 gctl_error(req, "Invalid number of arguments."); 1551 return (-1); 1552 } 1553 for (i = 1; i < *nargs; i++) { 1554 snprintf(arg, sizeof(arg), "arg%d", i); 1555 diskname = gctl_get_asciiparam(req, arg); 1556 if (diskname == NULL) { 1557 gctl_error(req, "No disk name (%s).", arg); 1558 error = -2; 1559 break; 1560 } 1561 if (strncmp(diskname, "/dev/", 5) == 0) 1562 diskname += 5; 1563 1564 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1565 if (disk->d_consumer != NULL && 1566 disk->d_consumer->provider != NULL && 1567 strcmp(disk->d_consumer->provider->name, 1568 diskname) == 0) 1569 break; 1570 } 1571 if (disk == NULL) { 1572 gctl_error(req, "Disk '%s' not found.", 1573 diskname); 1574 error = -3; 1575 break; 1576 } 1577 1578 if (strcmp(verb, "fail") == 0) { 1579 g_raid_md_fail_disk_promise(md, NULL, disk); 1580 continue; 1581 } 1582 1583 /* Erase metadata on deleting disk and destroy it. */ 1584 promise_meta_erase(disk->d_consumer); 1585 g_raid_destroy_disk(disk); 1586 } 1587 g_raid_md_promise_purge_volumes(sc); 1588 1589 /* Write updated metadata to remaining disks. */ 1590 g_raid_md_write_promise(md, NULL, NULL, NULL); 1591 1592 /* Check if anything left. */ 1593 if (g_raid_ndisks(sc, -1) == 0) 1594 g_raid_destroy_node(sc, 0); 1595 else 1596 g_raid_md_promise_refill(sc); 1597 return (error); 1598 } 1599 if (strcmp(verb, "insert") == 0) { 1600 if (*nargs < 2) { 1601 gctl_error(req, "Invalid number of arguments."); 1602 return (-1); 1603 } 1604 for (i = 1; i < *nargs; i++) { 1605 /* Get disk name. */ 1606 snprintf(arg, sizeof(arg), "arg%d", i); 1607 diskname = gctl_get_asciiparam(req, arg); 1608 if (diskname == NULL) { 1609 gctl_error(req, "No disk name (%s).", arg); 1610 error = -3; 1611 break; 1612 } 1613 1614 /* Try to find provider with specified name. */ 1615 g_topology_lock(); 1616 cp = g_raid_open_consumer(sc, diskname); 1617 if (cp == NULL) { 1618 gctl_error(req, "Can't open disk '%s'.", 1619 diskname); 1620 g_topology_unlock(); 1621 error = -4; 1622 break; 1623 } 1624 pp = cp->provider; 1625 g_topology_unlock(); 1626 1627 if (pp->mediasize / pp->sectorsize > UINT32_MAX) { 1628 gctl_error(req, 1629 "Disk '%s' is too big.", diskname); 1630 g_raid_kill_consumer(sc, cp); 1631 error = -8; 1632 break; 1633 } 1634 1635 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1636 1637 disk = g_raid_create_disk(sc); 1638 disk->d_consumer = cp; 1639 disk->d_md_data = (void *)pd; 1640 cp->private = disk; 1641 1642 /* Read kernel dumping information. */ 1643 disk->d_kd.offset = 0; 1644 disk->d_kd.length = OFF_MAX; 1645 len = sizeof(disk->d_kd); 1646 g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd); 1647 if (disk->d_kd.di.dumper == NULL) 1648 G_RAID_DEBUG1(2, sc, 1649 "Dumping not supported by %s.", 1650 cp->provider->name); 1651 1652 /* Welcome the "new" disk. */ 1653 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE); 1654 promise_meta_write_spare(cp); 1655 g_raid_md_promise_refill(sc); 1656 } 1657 return (error); 1658 } 1659 return (-100); 1660} 1661 1662static int 1663g_raid_md_write_promise(struct g_raid_md_object *md, struct g_raid_volume *tvol, 1664 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1665{ 1666 struct g_raid_softc *sc; 1667 struct g_raid_volume *vol; 1668 struct g_raid_subdisk *sd; 1669 struct g_raid_disk *disk; 1670 struct g_raid_md_promise_perdisk *pd; 1671 struct g_raid_md_promise_pervolume *pv; 1672 struct promise_raid_conf *meta; 1673 off_t rebuild_lba64; 1674 int i, j, pos, rebuild; 1675 1676 sc = md->mdo_softc; 1677 1678 if (sc->sc_stopping == G_RAID_DESTROY_HARD) 1679 return (0); 1680 1681 /* Generate new per-volume metadata for affected volumes. */ 1682 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1683 if (vol->v_stopping) 1684 continue; 1685 1686 /* Skip volumes not related to specified targets. */ 1687 if (tvol != NULL && vol != tvol) 1688 continue; 1689 if (tsd != NULL && vol != tsd->sd_volume) 1690 continue; 1691 if (tdisk != NULL) { 1692 for (i = 0; i < vol->v_disks_count; i++) { 1693 if (vol->v_subdisks[i].sd_disk == tdisk) 1694 break; 1695 } 1696 if (i >= vol->v_disks_count) 1697 continue; 1698 } 1699 1700 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1701 pv->pv_generation++; 1702 1703 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO); 1704 if (pv->pv_meta != NULL) 1705 memcpy(meta, pv->pv_meta, sizeof(*meta)); 1706 memcpy(meta->promise_id, PROMISE_MAGIC, 1707 sizeof(PROMISE_MAGIC) - 1); 1708 meta->dummy_0 = 0x00020000; 1709 meta->integrity = PROMISE_I_VALID; 1710 1711 meta->generation = pv->pv_generation; 1712 meta->status = PROMISE_S_VALID | PROMISE_S_ONLINE | 1713 PROMISE_S_INITED | PROMISE_S_READY; 1714 if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED) 1715 meta->status |= PROMISE_S_DEGRADED; 1716 if (vol->v_dirty) 1717 meta->status |= PROMISE_S_MARKED; /* XXX: INVENTED! */ 1718 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0 || 1719 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) 1720 meta->type = PROMISE_T_RAID0; 1721 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1722 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) 1723 meta->type = PROMISE_T_RAID1; 1724 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3) 1725 meta->type = PROMISE_T_RAID3; 1726 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) 1727 meta->type = PROMISE_T_RAID5; 1728 else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT) 1729 meta->type = PROMISE_T_SPAN; 1730 else 1731 meta->type = PROMISE_T_JBOD; 1732 meta->total_disks = vol->v_disks_count; 1733 meta->stripe_shift = ffs(vol->v_strip_size / 1024); 1734 meta->array_width = vol->v_disks_count; 1735 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1736 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) 1737 meta->array_width /= 2; 1738 meta->array_number = vol->v_global_id; 1739 meta->total_sectors = vol->v_mediasize / vol->v_sectorsize; 1740 meta->total_sectors_high = 1741 (vol->v_mediasize / vol->v_sectorsize) >> 32; 1742 meta->cylinders = meta->total_sectors / (255 * 63) - 1; 1743 meta->heads = 254; 1744 meta->sectors = 63; 1745 meta->volume_id = pv->pv_id; 1746 rebuild_lba64 = UINT64_MAX; 1747 rebuild = 0; 1748 for (i = 0; i < vol->v_disks_count; i++) { 1749 sd = &vol->v_subdisks[i]; 1750 /* For RAID0+1 we need to translate order. */ 1751 pos = promise_meta_translate_disk(vol, i); 1752 meta->disks[pos].flags = PROMISE_F_VALID | 1753 PROMISE_F_ASSIGNED; 1754 if (sd->sd_state == G_RAID_SUBDISK_S_NONE) { 1755 meta->disks[pos].flags |= 0; 1756 } else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED) { 1757 meta->disks[pos].flags |= 1758 PROMISE_F_DOWN | PROMISE_F_REDIR; 1759 } else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD) { 1760 meta->disks[pos].flags |= 1761 PROMISE_F_ONLINE | PROMISE_F_REDIR; 1762 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) { 1763 rebuild_lba64 = MIN(rebuild_lba64, 1764 sd->sd_rebuild_pos / 512); 1765 } else 1766 rebuild_lba64 = 0; 1767 rebuild = 1; 1768 } else { 1769 meta->disks[pos].flags |= PROMISE_F_ONLINE; 1770 if (sd->sd_state < G_RAID_SUBDISK_S_ACTIVE) { 1771 meta->status |= PROMISE_S_MARKED; 1772 if (sd->sd_state == G_RAID_SUBDISK_S_RESYNC) { 1773 rebuild_lba64 = MIN(rebuild_lba64, 1774 sd->sd_rebuild_pos / 512); 1775 } else 1776 rebuild_lba64 = 0; 1777 } 1778 } 1779 if (pv->pv_meta != NULL) { 1780 meta->disks[pos].id = pv->pv_meta->disks[pos].id; 1781 } else { 1782 meta->disks[pos].number = i * 2; 1783 arc4rand(&meta->disks[pos].id, 1784 sizeof(meta->disks[pos].id), 0); 1785 } 1786 } 1787 promise_meta_put_name(meta, vol->v_name); 1788 1789 /* Try to mimic AMD BIOS rebuild/resync behavior. */ 1790 if (rebuild_lba64 != UINT64_MAX) { 1791 if (rebuild) 1792 meta->magic_3 = 0x03040010UL; /* Rebuild? */ 1793 else 1794 meta->magic_3 = 0x03040008UL; /* Resync? */ 1795 /* Translate from per-disk to per-volume LBA. */ 1796 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1797 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1798 rebuild_lba64 *= meta->array_width; 1799 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3 || 1800 vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) { 1801 rebuild_lba64 *= meta->array_width - 1; 1802 } else 1803 rebuild_lba64 = 0; 1804 } else 1805 meta->magic_3 = 0x03000000UL; 1806 meta->rebuild_lba64 = rebuild_lba64; 1807 meta->magic_4 = 0x04010101UL; 1808 1809 /* Replace per-volume metadata with new. */ 1810 if (pv->pv_meta != NULL) 1811 free(pv->pv_meta, M_MD_PROMISE); 1812 pv->pv_meta = meta; 1813 1814 /* Copy new metadata to the disks, adding or replacing old. */ 1815 for (i = 0; i < vol->v_disks_count; i++) { 1816 sd = &vol->v_subdisks[i]; 1817 disk = sd->sd_disk; 1818 if (disk == NULL) 1819 continue; 1820 /* For RAID0+1 we need to translate order. */ 1821 pos = promise_meta_translate_disk(vol, i); 1822 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1823 for (j = 0; j < pd->pd_subdisks; j++) { 1824 if (pd->pd_meta[j]->volume_id == meta->volume_id) 1825 break; 1826 } 1827 if (j == pd->pd_subdisks) 1828 pd->pd_subdisks++; 1829 if (pd->pd_meta[j] != NULL) 1830 free(pd->pd_meta[j], M_MD_PROMISE); 1831 pd->pd_meta[j] = promise_meta_copy(meta); 1832 pd->pd_meta[j]->disk = meta->disks[pos]; 1833 pd->pd_meta[j]->disk.number = pos; 1834 pd->pd_meta[j]->disk_offset = sd->sd_offset / 512; 1835 pd->pd_meta[j]->disk_sectors = sd->sd_size / 512; 1836 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) { 1837 pd->pd_meta[j]->rebuild_lba = 1838 sd->sd_rebuild_pos / 512; 1839 } else if (sd->sd_state < G_RAID_SUBDISK_S_REBUILD) 1840 pd->pd_meta[j]->rebuild_lba = 0; 1841 else 1842 pd->pd_meta[j]->rebuild_lba = UINT32_MAX; 1843 pd->pd_updated = 1; 1844 } 1845 } 1846 1847 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1848 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1849 if (disk->d_state != G_RAID_DISK_S_ACTIVE) 1850 continue; 1851 if (!pd->pd_updated) 1852 continue; 1853 G_RAID_DEBUG(1, "Writing Promise metadata to %s", 1854 g_raid_get_diskname(disk)); 1855 for (i = 0; i < pd->pd_subdisks; i++) 1856 g_raid_md_promise_print(pd->pd_meta[i]); 1857 promise_meta_write(disk->d_consumer, 1858 pd->pd_meta, pd->pd_subdisks); 1859 pd->pd_updated = 0; 1860 } 1861 1862 return (0); 1863} 1864 1865static int 1866g_raid_md_fail_disk_promise(struct g_raid_md_object *md, 1867 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1868{ 1869 struct g_raid_softc *sc; 1870 struct g_raid_md_promise_perdisk *pd; 1871 struct g_raid_subdisk *sd; 1872 int i, pos; 1873 1874 sc = md->mdo_softc; 1875 pd = (struct g_raid_md_promise_perdisk *)tdisk->d_md_data; 1876 1877 /* We can't fail disk that is not a part of array now. */ 1878 if (tdisk->d_state != G_RAID_DISK_S_ACTIVE) 1879 return (-1); 1880 1881 /* 1882 * Mark disk as failed in metadata and try to write that metadata 1883 * to the disk itself to prevent it's later resurrection as STALE. 1884 */ 1885 if (pd->pd_subdisks > 0 && tdisk->d_consumer != NULL) 1886 G_RAID_DEBUG(1, "Writing Promise metadata to %s", 1887 g_raid_get_diskname(tdisk)); 1888 for (i = 0; i < pd->pd_subdisks; i++) { 1889 pd->pd_meta[i]->disk.flags |= 1890 PROMISE_F_DOWN | PROMISE_F_REDIR; 1891 pos = pd->pd_meta[i]->disk.number; 1892 if (pos >= 0 && pos < PROMISE_MAX_DISKS) { 1893 pd->pd_meta[i]->disks[pos].flags |= 1894 PROMISE_F_DOWN | PROMISE_F_REDIR; 1895 } 1896 g_raid_md_promise_print(pd->pd_meta[i]); 1897 } 1898 if (tdisk->d_consumer != NULL) 1899 promise_meta_write(tdisk->d_consumer, 1900 pd->pd_meta, pd->pd_subdisks); 1901 1902 /* Change states. */ 1903 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED); 1904 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) { 1905 g_raid_change_subdisk_state(sd, 1906 G_RAID_SUBDISK_S_FAILED); 1907 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED, 1908 G_RAID_EVENT_SUBDISK); 1909 } 1910 1911 /* Write updated metadata to remaining disks. */ 1912 g_raid_md_write_promise(md, NULL, NULL, tdisk); 1913 1914 g_raid_md_promise_refill(sc); 1915 return (0); 1916} 1917 1918static int 1919g_raid_md_free_disk_promise(struct g_raid_md_object *md, 1920 struct g_raid_disk *disk) 1921{ 1922 struct g_raid_md_promise_perdisk *pd; 1923 int i; 1924 1925 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1926 for (i = 0; i < pd->pd_subdisks; i++) { 1927 if (pd->pd_meta[i] != NULL) { 1928 free(pd->pd_meta[i], M_MD_PROMISE); 1929 pd->pd_meta[i] = NULL; 1930 } 1931 } 1932 free(pd, M_MD_PROMISE); 1933 disk->d_md_data = NULL; 1934 return (0); 1935} 1936 1937static int 1938g_raid_md_free_volume_promise(struct g_raid_md_object *md, 1939 struct g_raid_volume *vol) 1940{ 1941 struct g_raid_md_promise_pervolume *pv; 1942 1943 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1944 if (pv && pv->pv_meta != NULL) { 1945 free(pv->pv_meta, M_MD_PROMISE); 1946 pv->pv_meta = NULL; 1947 } 1948 if (pv && !pv->pv_started) { 1949 pv->pv_started = 1; 1950 callout_stop(&pv->pv_start_co); 1951 } 1952 return (0); 1953} 1954 1955static int 1956g_raid_md_free_promise(struct g_raid_md_object *md) 1957{ 1958 1959 return (0); 1960} 1961 1962G_RAID_MD_DECLARE(g_raid_md_promise); 1963