md_promise.c revision 245533
1/*- 2 * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org> 3 * Copyright (c) 2000 - 2008 S��ren 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: head/sys/geom/raid/md_promise.c 245533 2013-01-17 03:27:08Z mav $"); 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 <geom/geom.h> 42#include "geom/raid/g_raid.h" 43#include "g_raid_md_if.h" 44 45static MALLOC_DEFINE(M_MD_PROMISE, "md_promise_data", "GEOM_RAID Promise metadata"); 46 47#define PROMISE_MAX_DISKS 8 48#define PROMISE_MAX_SUBDISKS 2 49#define PROMISE_META_OFFSET 14 50 51struct promise_raid_disk { 52 uint8_t flags; /* Subdisk status. */ 53#define PROMISE_F_VALID 0x01 54#define PROMISE_F_ONLINE 0x02 55#define PROMISE_F_ASSIGNED 0x04 56#define PROMISE_F_SPARE 0x08 57#define PROMISE_F_DUPLICATE 0x10 58#define PROMISE_F_REDIR 0x20 59#define PROMISE_F_DOWN 0x40 60#define PROMISE_F_READY 0x80 61 62 uint8_t number; /* Position in a volume. */ 63 uint8_t channel; /* ATA channel number. */ 64 uint8_t device; /* ATA device number. */ 65 uint64_t id __packed; /* Subdisk ID. */ 66} __packed; 67 68struct promise_raid_conf { 69 char promise_id[24]; 70#define PROMISE_MAGIC "Promise Technology, Inc." 71#define FREEBSD_MAGIC "FreeBSD ATA driver RAID " 72 73 uint32_t dummy_0; 74 uint64_t magic_0; 75#define PROMISE_MAGIC0(x) (((uint64_t)(x.channel) << 48) | \ 76 ((uint64_t)(x.device != 0) << 56)) 77 uint16_t magic_1; 78 uint32_t magic_2; 79 uint8_t filler1[470]; 80 81 uint32_t integrity; 82#define PROMISE_I_VALID 0x00000080 83 84 struct promise_raid_disk disk; /* This subdisk info. */ 85 uint32_t disk_offset; /* Subdisk offset. */ 86 uint32_t disk_sectors; /* Subdisk size */ 87 uint32_t disk_rebuild; /* Rebuild position. */ 88 uint16_t generation; /* Generation number. */ 89 uint8_t status; /* Volume status. */ 90#define PROMISE_S_VALID 0x01 91#define PROMISE_S_ONLINE 0x02 92#define PROMISE_S_INITED 0x04 93#define PROMISE_S_READY 0x08 94#define PROMISE_S_DEGRADED 0x10 95#define PROMISE_S_MARKED 0x20 96#define PROMISE_S_MIGRATING 0x40 97#define PROMISE_S_FUNCTIONAL 0x80 98 99 uint8_t type; /* Voluem type. */ 100#define PROMISE_T_RAID0 0x00 101#define PROMISE_T_RAID1 0x01 102#define PROMISE_T_RAID3 0x02 103#define PROMISE_T_RAID5 0x04 104#define PROMISE_T_SPAN 0x08 105#define PROMISE_T_JBOD 0x10 106 107 uint8_t total_disks; /* Disks in this volume. */ 108 uint8_t stripe_shift; /* Strip size. */ 109 uint8_t array_width; /* Number of RAID0 stripes. */ 110 uint8_t array_number; /* Global volume number. */ 111 uint32_t total_sectors; /* Volume size. */ 112 uint16_t cylinders; /* Volume geometry: C. */ 113 uint8_t heads; /* Volume geometry: H. */ 114 uint8_t sectors; /* Volume geometry: S. */ 115 uint64_t volume_id __packed; /* Volume ID, */ 116 struct promise_raid_disk disks[PROMISE_MAX_DISKS]; 117 /* Subdisks in this volume. */ 118 char name[32]; /* Volume label. */ 119 120 uint32_t filler2[8]; 121 uint32_t magic_3; /* Something related to rebuild. */ 122 uint64_t rebuild_lba64; /* Per-volume rebuild position. */ 123 uint32_t magic_4; 124 uint32_t magic_5; 125 uint32_t total_sectors_high; 126 uint8_t magic_6; 127 uint8_t sector_size; 128 uint16_t magic_7; 129 uint32_t magic_8[31]; 130 uint32_t backup_time; 131 uint16_t magic_9; 132 uint32_t disk_offset_high; 133 uint32_t disk_sectors_high; 134 uint32_t disk_rebuild_high; 135 uint16_t magic_10; 136 uint32_t magic_11[3]; 137 uint32_t filler3[284]; 138 uint32_t checksum; 139} __packed; 140 141struct g_raid_md_promise_perdisk { 142 int pd_updated; 143 int pd_subdisks; 144 struct promise_raid_conf *pd_meta[PROMISE_MAX_SUBDISKS]; 145}; 146 147struct g_raid_md_promise_pervolume { 148 struct promise_raid_conf *pv_meta; 149 uint64_t pv_id; 150 uint16_t pv_generation; 151 int pv_disks_present; 152 int pv_started; 153 struct callout pv_start_co; /* STARTING state timer. */ 154}; 155 156static g_raid_md_create_t g_raid_md_create_promise; 157static g_raid_md_taste_t g_raid_md_taste_promise; 158static g_raid_md_event_t g_raid_md_event_promise; 159static g_raid_md_volume_event_t g_raid_md_volume_event_promise; 160static g_raid_md_ctl_t g_raid_md_ctl_promise; 161static g_raid_md_write_t g_raid_md_write_promise; 162static g_raid_md_fail_disk_t g_raid_md_fail_disk_promise; 163static g_raid_md_free_disk_t g_raid_md_free_disk_promise; 164static g_raid_md_free_volume_t g_raid_md_free_volume_promise; 165static g_raid_md_free_t g_raid_md_free_promise; 166 167static kobj_method_t g_raid_md_promise_methods[] = { 168 KOBJMETHOD(g_raid_md_create, g_raid_md_create_promise), 169 KOBJMETHOD(g_raid_md_taste, g_raid_md_taste_promise), 170 KOBJMETHOD(g_raid_md_event, g_raid_md_event_promise), 171 KOBJMETHOD(g_raid_md_volume_event, g_raid_md_volume_event_promise), 172 KOBJMETHOD(g_raid_md_ctl, g_raid_md_ctl_promise), 173 KOBJMETHOD(g_raid_md_write, g_raid_md_write_promise), 174 KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_promise), 175 KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_promise), 176 KOBJMETHOD(g_raid_md_free_volume, g_raid_md_free_volume_promise), 177 KOBJMETHOD(g_raid_md_free, g_raid_md_free_promise), 178 { 0, 0 } 179}; 180 181static struct g_raid_md_class g_raid_md_promise_class = { 182 "Promise", 183 g_raid_md_promise_methods, 184 sizeof(struct g_raid_md_object), 185 .mdc_enable = 1, 186 .mdc_priority = 100 187}; 188 189 190static void 191g_raid_md_promise_print(struct promise_raid_conf *meta) 192{ 193 int i; 194 195 if (g_raid_debug < 1) 196 return; 197 198 printf("********* ATA Promise Metadata *********\n"); 199 printf("promise_id <%.24s>\n", meta->promise_id); 200 printf("disk %02x %02x %02x %02x %016jx\n", 201 meta->disk.flags, meta->disk.number, meta->disk.channel, 202 meta->disk.device, meta->disk.id); 203 printf("disk_offset %u\n", meta->disk_offset); 204 printf("disk_sectors %u\n", meta->disk_sectors); 205 printf("disk_rebuild %u\n", meta->disk_rebuild); 206 printf("generation %u\n", meta->generation); 207 printf("status 0x%02x\n", meta->status); 208 printf("type %u\n", meta->type); 209 printf("total_disks %u\n", meta->total_disks); 210 printf("stripe_shift %u\n", meta->stripe_shift); 211 printf("array_width %u\n", meta->array_width); 212 printf("array_number %u\n", meta->array_number); 213 printf("total_sectors %u\n", meta->total_sectors); 214 printf("cylinders %u\n", meta->cylinders); 215 printf("heads %u\n", meta->heads); 216 printf("sectors %u\n", meta->sectors); 217 printf("volume_id 0x%016jx\n", meta->volume_id); 218 printf("disks:\n"); 219 for (i = 0; i < PROMISE_MAX_DISKS; i++ ) { 220 printf(" %02x %02x %02x %02x %016jx\n", 221 meta->disks[i].flags, meta->disks[i].number, 222 meta->disks[i].channel, meta->disks[i].device, 223 meta->disks[i].id); 224 } 225 printf("name <%.32s>\n", meta->name); 226 printf("magic_3 0x%08x\n", meta->magic_3); 227 printf("rebuild_lba64 %ju\n", meta->rebuild_lba64); 228 printf("magic_4 0x%08x\n", meta->magic_4); 229 printf("magic_5 0x%08x\n", meta->magic_5); 230 printf("total_sectors_high 0x%08x\n", meta->total_sectors_high); 231 printf("sector_size %u\n", meta->sector_size); 232 printf("backup_time %d\n", meta->backup_time); 233 printf("disk_offset_high 0x%08x\n", meta->disk_offset_high); 234 printf("disk_sectors_high 0x%08x\n", meta->disk_sectors_high); 235 printf("disk_rebuild_high 0x%08x\n", meta->disk_rebuild_high); 236 printf("=================================================\n"); 237} 238 239static struct promise_raid_conf * 240promise_meta_copy(struct promise_raid_conf *meta) 241{ 242 struct promise_raid_conf *nmeta; 243 244 nmeta = malloc(sizeof(*nmeta), M_MD_PROMISE, M_WAITOK); 245 memcpy(nmeta, meta, sizeof(*nmeta)); 246 return (nmeta); 247} 248 249static int 250promise_meta_find_disk(struct promise_raid_conf *meta, uint64_t id) 251{ 252 int pos; 253 254 for (pos = 0; pos < meta->total_disks; pos++) { 255 if (meta->disks[pos].id == id) 256 return (pos); 257 } 258 return (-1); 259} 260 261static int 262promise_meta_unused_range(struct promise_raid_conf **metaarr, int nsd, 263 off_t sectors, off_t *off, off_t *size) 264{ 265 off_t coff, csize, tmp; 266 int i, j; 267 268 sectors -= 131072; 269 *off = 0; 270 *size = 0; 271 coff = 0; 272 csize = sectors; 273 i = 0; 274 while (1) { 275 for (j = 0; j < nsd; j++) { 276 tmp = ((off_t)metaarr[j]->disk_offset_high << 32) + 277 metaarr[j]->disk_offset; 278 if (tmp >= coff) 279 csize = MIN(csize, tmp - coff); 280 } 281 if (csize > *size) { 282 *off = coff; 283 *size = csize; 284 } 285 if (i >= nsd) 286 break; 287 coff = ((off_t)metaarr[i]->disk_offset_high << 32) + 288 metaarr[i]->disk_offset + 289 ((off_t)metaarr[i]->disk_sectors_high << 32) + 290 metaarr[i]->disk_sectors; 291 csize = sectors - coff; 292 i++; 293 }; 294 return ((*size > 0) ? 1 : 0); 295} 296 297static int 298promise_meta_translate_disk(struct g_raid_volume *vol, int md_disk_pos) 299{ 300 int disk_pos, width; 301 302 if (md_disk_pos >= 0 && vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 303 width = vol->v_disks_count / 2; 304 disk_pos = (md_disk_pos / width) + 305 (md_disk_pos % width) * width; 306 } else 307 disk_pos = md_disk_pos; 308 return (disk_pos); 309} 310 311static void 312promise_meta_get_name(struct promise_raid_conf *meta, char *buf) 313{ 314 int i; 315 316 strncpy(buf, meta->name, 32); 317 buf[32] = 0; 318 for (i = 31; i >= 0; i--) { 319 if (buf[i] > 0x20) 320 break; 321 buf[i] = 0; 322 } 323} 324 325static void 326promise_meta_put_name(struct promise_raid_conf *meta, char *buf) 327{ 328 329 memset(meta->name, 0x20, 32); 330 memcpy(meta->name, buf, MIN(strlen(buf), 32)); 331} 332 333static int 334promise_meta_read(struct g_consumer *cp, struct promise_raid_conf **metaarr) 335{ 336 struct g_provider *pp; 337 struct promise_raid_conf *meta; 338 char *buf; 339 int error, i, subdisks; 340 uint32_t checksum, *ptr; 341 342 pp = cp->provider; 343 subdisks = 0; 344next: 345 /* Read metadata block. */ 346 buf = g_read_data(cp, pp->mediasize - pp->sectorsize * 347 (63 - subdisks * PROMISE_META_OFFSET), 348 pp->sectorsize * 4, &error); 349 if (buf == NULL) { 350 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).", 351 pp->name, error); 352 return (subdisks); 353 } 354 meta = (struct promise_raid_conf *)buf; 355 356 /* Check if this is an Promise RAID struct */ 357 if (strncmp(meta->promise_id, PROMISE_MAGIC, strlen(PROMISE_MAGIC)) && 358 strncmp(meta->promise_id, FREEBSD_MAGIC, strlen(FREEBSD_MAGIC))) { 359 if (subdisks == 0) 360 G_RAID_DEBUG(1, 361 "Promise signature check failed on %s", pp->name); 362 g_free(buf); 363 return (subdisks); 364 } 365 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK); 366 memcpy(meta, buf, MIN(sizeof(*meta), pp->sectorsize * 4)); 367 g_free(buf); 368 369 /* Check metadata checksum. */ 370 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++) 371 checksum += *ptr++; 372 if (checksum != meta->checksum) { 373 G_RAID_DEBUG(1, "Promise checksum check failed on %s", pp->name); 374 free(meta, M_MD_PROMISE); 375 return (subdisks); 376 } 377 378 if ((meta->integrity & PROMISE_I_VALID) == 0) { 379 G_RAID_DEBUG(1, "Promise metadata is invalid on %s", pp->name); 380 free(meta, M_MD_PROMISE); 381 return (subdisks); 382 } 383 384 if (meta->total_disks > PROMISE_MAX_DISKS) { 385 G_RAID_DEBUG(1, "Wrong number of disks on %s (%d)", 386 pp->name, meta->total_disks); 387 free(meta, M_MD_PROMISE); 388 return (subdisks); 389 } 390 391 /* Remove filler garbage from fields used in newer metadata. */ 392 if (meta->disk_offset_high == 0x8b8c8d8e && 393 meta->disk_sectors_high == 0x8788898a && 394 meta->disk_rebuild_high == 0x83848586) { 395 meta->disk_offset_high = 0; 396 meta->disk_sectors_high = 0; 397 if (meta->disk_rebuild == UINT32_MAX) 398 meta->disk_rebuild_high = UINT32_MAX; 399 else 400 meta->disk_rebuild_high = 0; 401 if (meta->total_sectors_high == 0x15161718) { 402 meta->total_sectors_high = 0; 403 meta->backup_time = 0; 404 if (meta->rebuild_lba64 == 0x2122232425262728) 405 meta->rebuild_lba64 = UINT64_MAX; 406 } 407 } 408 if (meta->sector_size < 1 || meta->sector_size > 8) 409 meta->sector_size = 1; 410 411 /* Save this part and look for next. */ 412 *metaarr = meta; 413 metaarr++; 414 subdisks++; 415 if (subdisks < PROMISE_MAX_SUBDISKS) 416 goto next; 417 418 return (subdisks); 419} 420 421static int 422promise_meta_write(struct g_consumer *cp, 423 struct promise_raid_conf **metaarr, int nsd) 424{ 425 struct g_provider *pp; 426 struct promise_raid_conf *meta; 427 char *buf; 428 off_t off, size; 429 int error, i, subdisk, fake; 430 uint32_t checksum, *ptr; 431 432 pp = cp->provider; 433 subdisk = 0; 434 fake = 0; 435next: 436 buf = malloc(pp->sectorsize * 4, M_MD_PROMISE, M_WAITOK | M_ZERO); 437 meta = NULL; 438 if (subdisk < nsd) { 439 meta = metaarr[subdisk]; 440 } else if (!fake && promise_meta_unused_range(metaarr, nsd, 441 cp->provider->mediasize / cp->provider->sectorsize, 442 &off, &size)) { 443 /* Optionally add record for unused space. */ 444 meta = (struct promise_raid_conf *)buf; 445 memcpy(&meta->promise_id[0], PROMISE_MAGIC, 446 sizeof(PROMISE_MAGIC) - 1); 447 meta->dummy_0 = 0x00020000; 448 meta->integrity = PROMISE_I_VALID; 449 meta->disk.flags = PROMISE_F_ONLINE | PROMISE_F_VALID; 450 meta->disk.number = 0xff; 451 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0); 452 meta->disk_offset_high = off >> 32; 453 meta->disk_offset = (uint32_t)off; 454 meta->disk_sectors_high = size >> 32; 455 meta->disk_sectors = (uint32_t)size; 456 meta->disk_rebuild_high = UINT32_MAX; 457 meta->disk_rebuild = UINT32_MAX; 458 fake = 1; 459 } 460 if (meta != NULL) { 461 /* Recalculate checksum for case if metadata were changed. */ 462 meta->checksum = 0; 463 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++) 464 checksum += *ptr++; 465 meta->checksum = checksum; 466 memcpy(buf, meta, MIN(pp->sectorsize * 4, sizeof(*meta))); 467 } 468 error = g_write_data(cp, pp->mediasize - pp->sectorsize * 469 (63 - subdisk * PROMISE_META_OFFSET), 470 buf, pp->sectorsize * 4); 471 if (error != 0) { 472 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).", 473 pp->name, error); 474 } 475 free(buf, M_MD_PROMISE); 476 477 subdisk++; 478 if (subdisk < PROMISE_MAX_SUBDISKS) 479 goto next; 480 481 return (error); 482} 483 484static int 485promise_meta_erase(struct g_consumer *cp) 486{ 487 struct g_provider *pp; 488 char *buf; 489 int error, subdisk; 490 491 pp = cp->provider; 492 buf = malloc(4 * pp->sectorsize, M_MD_PROMISE, M_WAITOK | M_ZERO); 493 for (subdisk = 0; subdisk < PROMISE_MAX_SUBDISKS; subdisk++) { 494 error = g_write_data(cp, pp->mediasize - pp->sectorsize * 495 (63 - subdisk * PROMISE_META_OFFSET), 496 buf, 4 * pp->sectorsize); 497 if (error != 0) { 498 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).", 499 pp->name, error); 500 } 501 } 502 free(buf, M_MD_PROMISE); 503 return (error); 504} 505 506static int 507promise_meta_write_spare(struct g_consumer *cp) 508{ 509 struct promise_raid_conf *meta; 510 off_t tmp; 511 int error; 512 513 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO); 514 memcpy(&meta->promise_id[0], PROMISE_MAGIC, sizeof(PROMISE_MAGIC) - 1); 515 meta->dummy_0 = 0x00020000; 516 meta->integrity = PROMISE_I_VALID; 517 meta->disk.flags = PROMISE_F_SPARE | PROMISE_F_ONLINE | PROMISE_F_VALID; 518 meta->disk.number = 0xff; 519 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0); 520 tmp = cp->provider->mediasize / cp->provider->sectorsize - 131072; 521 meta->disk_sectors_high = tmp >> 32; 522 meta->disk_sectors = (uint32_t)tmp; 523 meta->disk_rebuild_high = UINT32_MAX; 524 meta->disk_rebuild = UINT32_MAX; 525 error = promise_meta_write(cp, &meta, 1); 526 free(meta, M_MD_PROMISE); 527 return (error); 528} 529 530static struct g_raid_volume * 531g_raid_md_promise_get_volume(struct g_raid_softc *sc, uint64_t id) 532{ 533 struct g_raid_volume *vol; 534 struct g_raid_md_promise_pervolume *pv; 535 536 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 537 pv = vol->v_md_data; 538 if (pv->pv_id == id) 539 break; 540 } 541 return (vol); 542} 543 544static int 545g_raid_md_promise_purge_volumes(struct g_raid_softc *sc) 546{ 547 struct g_raid_volume *vol, *tvol; 548 struct g_raid_md_promise_pervolume *pv; 549 int i, res; 550 551 res = 0; 552 TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) { 553 pv = vol->v_md_data; 554 if (!pv->pv_started || vol->v_stopping) 555 continue; 556 for (i = 0; i < vol->v_disks_count; i++) { 557 if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE) 558 break; 559 } 560 if (i >= vol->v_disks_count) { 561 g_raid_destroy_volume(vol); 562 res = 1; 563 } 564 } 565 return (res); 566} 567 568static int 569g_raid_md_promise_purge_disks(struct g_raid_softc *sc) 570{ 571 struct g_raid_disk *disk, *tdisk; 572 struct g_raid_volume *vol; 573 struct g_raid_md_promise_perdisk *pd; 574 int i, j, res; 575 576 res = 0; 577 TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) { 578 if (disk->d_state == G_RAID_DISK_S_SPARE) 579 continue; 580 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 581 582 /* Scan for deleted volumes. */ 583 for (i = 0; i < pd->pd_subdisks; ) { 584 vol = g_raid_md_promise_get_volume(sc, 585 pd->pd_meta[i]->volume_id); 586 if (vol != NULL && !vol->v_stopping) { 587 i++; 588 continue; 589 } 590 free(pd->pd_meta[i], M_MD_PROMISE); 591 for (j = i; j < pd->pd_subdisks - 1; j++) 592 pd->pd_meta[j] = pd->pd_meta[j + 1]; 593 pd->pd_meta[pd->pd_subdisks - 1] = NULL; 594 pd->pd_subdisks--; 595 pd->pd_updated = 1; 596 } 597 598 /* If there is no metadata left - erase and delete disk. */ 599 if (pd->pd_subdisks == 0) { 600 promise_meta_erase(disk->d_consumer); 601 g_raid_destroy_disk(disk); 602 res = 1; 603 } 604 } 605 return (res); 606} 607 608static int 609g_raid_md_promise_supported(int level, int qual, int disks, int force) 610{ 611 612 if (disks > PROMISE_MAX_DISKS) 613 return (0); 614 switch (level) { 615 case G_RAID_VOLUME_RL_RAID0: 616 if (disks < 1) 617 return (0); 618 if (!force && disks < 2) 619 return (0); 620 break; 621 case G_RAID_VOLUME_RL_RAID1: 622 if (disks < 1) 623 return (0); 624 if (!force && (disks != 2)) 625 return (0); 626 break; 627 case G_RAID_VOLUME_RL_RAID1E: 628 if (disks < 2) 629 return (0); 630 if (disks % 2 != 0) 631 return (0); 632 if (!force && (disks != 4)) 633 return (0); 634 break; 635 case G_RAID_VOLUME_RL_SINGLE: 636 if (disks != 1) 637 return (0); 638 break; 639 case G_RAID_VOLUME_RL_CONCAT: 640 if (disks < 2) 641 return (0); 642 break; 643 case G_RAID_VOLUME_RL_RAID5: 644 if (disks < 3) 645 return (0); 646 if (qual != G_RAID_VOLUME_RLQ_R5LA) 647 return (0); 648 break; 649 default: 650 return (0); 651 } 652 if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE) 653 return (0); 654 return (1); 655} 656 657static int 658g_raid_md_promise_start_disk(struct g_raid_disk *disk, int sdn, 659 struct g_raid_volume *vol) 660{ 661 struct g_raid_softc *sc; 662 struct g_raid_subdisk *sd; 663 struct g_raid_md_promise_perdisk *pd; 664 struct g_raid_md_promise_pervolume *pv; 665 struct promise_raid_conf *meta; 666 off_t eoff, esize, size; 667 int disk_pos, md_disk_pos, i, resurrection = 0; 668 669 sc = disk->d_softc; 670 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 671 672 pv = vol->v_md_data; 673 meta = pv->pv_meta; 674 675 if (sdn >= 0) { 676 /* Find disk position in metadata by it's serial. */ 677 md_disk_pos = promise_meta_find_disk(meta, pd->pd_meta[sdn]->disk.id); 678 /* For RAID0+1 we need to translate order. */ 679 disk_pos = promise_meta_translate_disk(vol, md_disk_pos); 680 } else { 681 md_disk_pos = -1; 682 disk_pos = -1; 683 } 684 if (disk_pos < 0) { 685 G_RAID_DEBUG1(1, sc, "Disk %s is not part of the volume %s", 686 g_raid_get_diskname(disk), vol->v_name); 687 /* Failed stale disk is useless for us. */ 688 if (sdn >= 0 && 689 pd->pd_meta[sdn]->disk.flags & PROMISE_F_DOWN) { 690 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED); 691 return (0); 692 } 693 /* If we were given specific metadata subdisk - erase it. */ 694 if (sdn >= 0) { 695 free(pd->pd_meta[sdn], M_MD_PROMISE); 696 for (i = sdn; i < pd->pd_subdisks - 1; i++) 697 pd->pd_meta[i] = pd->pd_meta[i + 1]; 698 pd->pd_meta[pd->pd_subdisks - 1] = NULL; 699 pd->pd_subdisks--; 700 } 701 /* If we are in the start process, that's all for now. */ 702 if (!pv->pv_started) 703 goto nofit; 704 /* 705 * If we have already started - try to get use of the disk. 706 * Try to replace OFFLINE disks first, then FAILED. 707 */ 708 promise_meta_unused_range(pd->pd_meta, pd->pd_subdisks, 709 disk->d_consumer->provider->mediasize / 710 disk->d_consumer->provider->sectorsize, 711 &eoff, &esize); 712 if (esize == 0) { 713 G_RAID_DEBUG1(1, sc, "No free space on disk %s", 714 g_raid_get_diskname(disk)); 715 goto nofit; 716 } 717 size = INT64_MAX; 718 for (i = 0; i < vol->v_disks_count; i++) { 719 sd = &vol->v_subdisks[i]; 720 if (sd->sd_state != G_RAID_SUBDISK_S_NONE) 721 size = sd->sd_size; 722 if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED && 723 (disk_pos < 0 || 724 vol->v_subdisks[i].sd_state < sd->sd_state)) 725 disk_pos = i; 726 } 727 if (disk_pos >= 0 && 728 vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT && 729 (off_t)esize * 512 < size) { 730 G_RAID_DEBUG1(1, sc, "Disk %s free space " 731 "is too small (%ju < %ju)", 732 g_raid_get_diskname(disk), 733 (off_t)esize * 512, size); 734 disk_pos = -1; 735 } 736 if (disk_pos >= 0) { 737 if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT) 738 esize = size / 512; 739 /* For RAID0+1 we need to translate order. */ 740 md_disk_pos = promise_meta_translate_disk(vol, disk_pos); 741 } else { 742nofit: 743 if (pd->pd_subdisks == 0) { 744 g_raid_change_disk_state(disk, 745 G_RAID_DISK_S_SPARE); 746 } 747 return (0); 748 } 749 G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s", 750 g_raid_get_diskname(disk), disk_pos, vol->v_name); 751 resurrection = 1; 752 } 753 754 sd = &vol->v_subdisks[disk_pos]; 755 756 if (resurrection && sd->sd_disk != NULL) { 757 g_raid_change_disk_state(sd->sd_disk, 758 G_RAID_DISK_S_STALE_FAILED); 759 TAILQ_REMOVE(&sd->sd_disk->d_subdisks, 760 sd, sd_next); 761 } 762 vol->v_subdisks[disk_pos].sd_disk = disk; 763 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 764 765 /* Welcome the new disk. */ 766 if (resurrection) 767 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 768 else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) 769 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED); 770 else 771 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 772 773 if (resurrection) { 774 sd->sd_offset = (off_t)eoff * 512; 775 sd->sd_size = (off_t)esize * 512; 776 } else { 777 sd->sd_offset = (((off_t)pd->pd_meta[sdn]->disk_offset_high 778 << 32) + pd->pd_meta[sdn]->disk_offset) * 512; 779 sd->sd_size = (((off_t)pd->pd_meta[sdn]->disk_sectors_high 780 << 32) + pd->pd_meta[sdn]->disk_sectors) * 512; 781 } 782 783 if (resurrection) { 784 /* Stale disk, almost same as new. */ 785 g_raid_change_subdisk_state(sd, 786 G_RAID_SUBDISK_S_NEW); 787 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) { 788 /* Failed disk. */ 789 g_raid_change_subdisk_state(sd, 790 G_RAID_SUBDISK_S_FAILED); 791 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_REDIR) { 792 /* Rebuilding disk. */ 793 g_raid_change_subdisk_state(sd, 794 G_RAID_SUBDISK_S_REBUILD); 795 if (pd->pd_meta[sdn]->generation != meta->generation) 796 sd->sd_rebuild_pos = 0; 797 else { 798 sd->sd_rebuild_pos = 799 (((off_t)pd->pd_meta[sdn]->disk_rebuild_high << 32) + 800 pd->pd_meta[sdn]->disk_rebuild) * 512; 801 } 802 } else if (!(meta->disks[md_disk_pos].flags & PROMISE_F_ONLINE)) { 803 /* Rebuilding disk. */ 804 g_raid_change_subdisk_state(sd, 805 G_RAID_SUBDISK_S_NEW); 806 } else if (pd->pd_meta[sdn]->generation != meta->generation || 807 (meta->status & PROMISE_S_MARKED)) { 808 /* Stale disk or dirty volume (unclean shutdown). */ 809 g_raid_change_subdisk_state(sd, 810 G_RAID_SUBDISK_S_STALE); 811 } else { 812 /* Up to date disk. */ 813 g_raid_change_subdisk_state(sd, 814 G_RAID_SUBDISK_S_ACTIVE); 815 } 816 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 817 G_RAID_EVENT_SUBDISK); 818 819 return (resurrection); 820} 821 822static void 823g_raid_md_promise_refill(struct g_raid_softc *sc) 824{ 825 struct g_raid_volume *vol; 826 struct g_raid_subdisk *sd; 827 struct g_raid_disk *disk; 828 struct g_raid_md_object *md; 829 struct g_raid_md_promise_perdisk *pd; 830 struct g_raid_md_promise_pervolume *pv; 831 int update, updated, i, bad; 832 833 md = sc->sc_md; 834restart: 835 updated = 0; 836 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 837 pv = vol->v_md_data; 838 if (!pv->pv_started || vol->v_stopping) 839 continue; 840 841 /* Search for subdisk that needs replacement. */ 842 bad = 0; 843 for (i = 0; i < vol->v_disks_count; i++) { 844 sd = &vol->v_subdisks[i]; 845 if (sd->sd_state == G_RAID_SUBDISK_S_NONE || 846 sd->sd_state == G_RAID_SUBDISK_S_FAILED) 847 bad = 1; 848 } 849 if (!bad) 850 continue; 851 852 G_RAID_DEBUG1(1, sc, "Volume %s is not complete, " 853 "trying to refill.", vol->v_name); 854 855 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 856 /* Skip failed. */ 857 if (disk->d_state < G_RAID_DISK_S_SPARE) 858 continue; 859 /* Skip already used by this volume. */ 860 for (i = 0; i < vol->v_disks_count; i++) { 861 sd = &vol->v_subdisks[i]; 862 if (sd->sd_disk == disk) 863 break; 864 } 865 if (i < vol->v_disks_count) 866 continue; 867 868 /* Try to use disk if it has empty extents. */ 869 pd = disk->d_md_data; 870 if (pd->pd_subdisks < PROMISE_MAX_SUBDISKS) { 871 update = 872 g_raid_md_promise_start_disk(disk, -1, vol); 873 } else 874 update = 0; 875 if (update) { 876 updated = 1; 877 g_raid_md_write_promise(md, vol, NULL, disk); 878 break; 879 } 880 } 881 } 882 if (updated) 883 goto restart; 884} 885 886static void 887g_raid_md_promise_start(struct g_raid_volume *vol) 888{ 889 struct g_raid_softc *sc; 890 struct g_raid_subdisk *sd; 891 struct g_raid_disk *disk; 892 struct g_raid_md_object *md; 893 struct g_raid_md_promise_perdisk *pd; 894 struct g_raid_md_promise_pervolume *pv; 895 struct promise_raid_conf *meta; 896 int i; 897 898 sc = vol->v_softc; 899 md = sc->sc_md; 900 pv = vol->v_md_data; 901 meta = pv->pv_meta; 902 903 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 904 if (meta->type == PROMISE_T_RAID0) 905 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0; 906 else if (meta->type == PROMISE_T_RAID1) { 907 if (meta->array_width == 1) 908 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1; 909 else 910 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E; 911 } else if (meta->type == PROMISE_T_RAID3) 912 vol->v_raid_level = G_RAID_VOLUME_RL_RAID3; 913 else if (meta->type == PROMISE_T_RAID5) { 914 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5; 915 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LA; 916 } else if (meta->type == PROMISE_T_SPAN) 917 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT; 918 else if (meta->type == PROMISE_T_JBOD) 919 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 920 else 921 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN; 922 vol->v_strip_size = 512 << meta->stripe_shift; //ZZZ 923 vol->v_disks_count = meta->total_disks; 924 vol->v_mediasize = (off_t)meta->total_sectors * 512; //ZZZ 925 if (meta->total_sectors_high < 256) /* If value looks sane. */ 926 vol->v_mediasize += 927 ((off_t)meta->total_sectors_high << 32) * 512; //ZZZ 928 vol->v_sectorsize = 512 * meta->sector_size; 929 for (i = 0; i < vol->v_disks_count; i++) { 930 sd = &vol->v_subdisks[i]; 931 sd->sd_offset = (((off_t)meta->disk_offset_high << 32) + 932 meta->disk_offset) * 512; 933 sd->sd_size = (((off_t)meta->disk_sectors_high << 32) + 934 meta->disk_sectors) * 512; 935 } 936 g_raid_start_volume(vol); 937 938 /* Make all disks found till the moment take their places. */ 939 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 940 pd = disk->d_md_data; 941 for (i = 0; i < pd->pd_subdisks; i++) { 942 if (pd->pd_meta[i]->volume_id == meta->volume_id) 943 g_raid_md_promise_start_disk(disk, i, vol); 944 } 945 } 946 947 pv->pv_started = 1; 948 callout_stop(&pv->pv_start_co); 949 G_RAID_DEBUG1(0, sc, "Volume started."); 950 g_raid_md_write_promise(md, vol, NULL, NULL); 951 952 /* Pickup any STALE/SPARE disks to refill array if needed. */ 953 g_raid_md_promise_refill(sc); 954 955 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME); 956} 957 958static void 959g_raid_promise_go(void *arg) 960{ 961 struct g_raid_volume *vol; 962 struct g_raid_softc *sc; 963 struct g_raid_md_promise_pervolume *pv; 964 965 vol = arg; 966 pv = vol->v_md_data; 967 sc = vol->v_softc; 968 if (!pv->pv_started) { 969 G_RAID_DEBUG1(0, sc, "Force volume start due to timeout."); 970 g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD, 971 G_RAID_EVENT_VOLUME); 972 } 973} 974 975static void 976g_raid_md_promise_new_disk(struct g_raid_disk *disk) 977{ 978 struct g_raid_softc *sc; 979 struct g_raid_md_object *md; 980 struct promise_raid_conf *pdmeta; 981 struct g_raid_md_promise_perdisk *pd; 982 struct g_raid_md_promise_pervolume *pv; 983 struct g_raid_volume *vol; 984 int i; 985 char buf[33]; 986 987 sc = disk->d_softc; 988 md = sc->sc_md; 989 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 990 991 if (pd->pd_subdisks == 0) { 992 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE); 993 g_raid_md_promise_refill(sc); 994 return; 995 } 996 997 for (i = 0; i < pd->pd_subdisks; i++) { 998 pdmeta = pd->pd_meta[i]; 999 1000 /* Look for volume with matching ID. */ 1001 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id); 1002 if (vol == NULL) { 1003 promise_meta_get_name(pdmeta, buf); 1004 vol = g_raid_create_volume(sc, buf, pdmeta->array_number); 1005 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO); 1006 pv->pv_id = pdmeta->volume_id; 1007 vol->v_md_data = pv; 1008 callout_init(&pv->pv_start_co, 1); 1009 callout_reset(&pv->pv_start_co, 1010 g_raid_start_timeout * hz, 1011 g_raid_promise_go, vol); 1012 } else 1013 pv = vol->v_md_data; 1014 1015 /* If we haven't started yet - check metadata freshness. */ 1016 if (pv->pv_meta == NULL || !pv->pv_started) { 1017 if (pv->pv_meta == NULL || 1018 ((int16_t)(pdmeta->generation - pv->pv_generation)) > 0) { 1019 G_RAID_DEBUG1(1, sc, "Newer disk"); 1020 if (pv->pv_meta != NULL) 1021 free(pv->pv_meta, M_MD_PROMISE); 1022 pv->pv_meta = promise_meta_copy(pdmeta); 1023 pv->pv_generation = pv->pv_meta->generation; 1024 pv->pv_disks_present = 1; 1025 } else if (pdmeta->generation == pv->pv_generation) { 1026 pv->pv_disks_present++; 1027 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)", 1028 pv->pv_disks_present, 1029 pv->pv_meta->total_disks); 1030 } else { 1031 G_RAID_DEBUG1(1, sc, "Older disk"); 1032 } 1033 } 1034 } 1035 1036 for (i = 0; i < pd->pd_subdisks; i++) { 1037 pdmeta = pd->pd_meta[i]; 1038 1039 /* Look for volume with matching ID. */ 1040 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id); 1041 if (vol == NULL) 1042 continue; 1043 pv = vol->v_md_data; 1044 1045 if (pv->pv_started) { 1046 if (g_raid_md_promise_start_disk(disk, i, vol)) 1047 g_raid_md_write_promise(md, vol, NULL, NULL); 1048 } else { 1049 /* If we collected all needed disks - start array. */ 1050 if (pv->pv_disks_present == pv->pv_meta->total_disks) 1051 g_raid_md_promise_start(vol); 1052 } 1053 } 1054} 1055 1056static int 1057g_raid_md_create_promise(struct g_raid_md_object *md, struct g_class *mp, 1058 struct g_geom **gp) 1059{ 1060 struct g_geom *geom; 1061 struct g_raid_softc *sc; 1062 1063 /* Search for existing node. */ 1064 LIST_FOREACH(geom, &mp->geom, geom) { 1065 sc = geom->softc; 1066 if (sc == NULL) 1067 continue; 1068 if (sc->sc_stopping != 0) 1069 continue; 1070 if (sc->sc_md->mdo_class != md->mdo_class) 1071 continue; 1072 break; 1073 } 1074 if (geom != NULL) { 1075 *gp = geom; 1076 return (G_RAID_MD_TASTE_EXISTING); 1077 } 1078 1079 /* Create new one if not found. */ 1080 sc = g_raid_create_node(mp, "Promise", md); 1081 if (sc == NULL) 1082 return (G_RAID_MD_TASTE_FAIL); 1083 md->mdo_softc = sc; 1084 *gp = sc->sc_geom; 1085 return (G_RAID_MD_TASTE_NEW); 1086} 1087 1088static int 1089g_raid_md_taste_promise(struct g_raid_md_object *md, struct g_class *mp, 1090 struct g_consumer *cp, struct g_geom **gp) 1091{ 1092 struct g_consumer *rcp; 1093 struct g_provider *pp; 1094 struct g_raid_softc *sc; 1095 struct g_raid_disk *disk; 1096 struct promise_raid_conf *meta, *metaarr[4]; 1097 struct g_raid_md_promise_perdisk *pd; 1098 struct g_geom *geom; 1099 int i, j, result, len, subdisks; 1100 char name[16]; 1101 uint16_t vendor; 1102 1103 G_RAID_DEBUG(1, "Tasting Promise on %s", cp->provider->name); 1104 pp = cp->provider; 1105 1106 /* Read metadata from device. */ 1107 meta = NULL; 1108 vendor = 0xffff; 1109 if (g_access(cp, 1, 0, 0) != 0) 1110 return (G_RAID_MD_TASTE_FAIL); 1111 g_topology_unlock(); 1112 len = 2; 1113 if (pp->geom->rank == 1) 1114 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor); 1115 subdisks = promise_meta_read(cp, metaarr); 1116 g_topology_lock(); 1117 g_access(cp, -1, 0, 0); 1118 if (subdisks == 0) { 1119 if (g_raid_aggressive_spare) { 1120 if (vendor == 0x105a || vendor == 0x1002) { 1121 G_RAID_DEBUG(1, 1122 "No Promise metadata, forcing spare."); 1123 goto search; 1124 } else { 1125 G_RAID_DEBUG(1, 1126 "Promise/ATI vendor mismatch " 1127 "0x%04x != 0x105a/0x1002", 1128 vendor); 1129 } 1130 } 1131 return (G_RAID_MD_TASTE_FAIL); 1132 } 1133 1134 /* Metadata valid. Print it. */ 1135 for (i = 0; i < subdisks; i++) 1136 g_raid_md_promise_print(metaarr[i]); 1137 1138 /* Purge meaningless (empty/spare) records. */ 1139 for (i = 0; i < subdisks; ) { 1140 if (metaarr[i]->disk.flags & PROMISE_F_ASSIGNED) { 1141 i++; 1142 continue; 1143 } 1144 free(metaarr[i], M_MD_PROMISE); 1145 for (j = i; j < subdisks - 1; j++) 1146 metaarr[i] = metaarr[j + 1]; 1147 metaarr[subdisks - 1] = NULL; 1148 subdisks--; 1149 } 1150 1151search: 1152 /* Search for matching node. */ 1153 sc = NULL; 1154 LIST_FOREACH(geom, &mp->geom, geom) { 1155 sc = geom->softc; 1156 if (sc == NULL) 1157 continue; 1158 if (sc->sc_stopping != 0) 1159 continue; 1160 if (sc->sc_md->mdo_class != md->mdo_class) 1161 continue; 1162 break; 1163 } 1164 1165 /* Found matching node. */ 1166 if (geom != NULL) { 1167 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name); 1168 result = G_RAID_MD_TASTE_EXISTING; 1169 1170 } else { /* Not found matching node -- create one. */ 1171 result = G_RAID_MD_TASTE_NEW; 1172 snprintf(name, sizeof(name), "Promise"); 1173 sc = g_raid_create_node(mp, name, md); 1174 md->mdo_softc = sc; 1175 geom = sc->sc_geom; 1176 } 1177 1178 rcp = g_new_consumer(geom); 1179 g_attach(rcp, pp); 1180 if (g_access(rcp, 1, 1, 1) != 0) 1181 ; //goto fail1; 1182 1183 g_topology_unlock(); 1184 sx_xlock(&sc->sc_lock); 1185 1186 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1187 pd->pd_subdisks = subdisks; 1188 for (i = 0; i < subdisks; i++) 1189 pd->pd_meta[i] = metaarr[i]; 1190 disk = g_raid_create_disk(sc); 1191 disk->d_md_data = (void *)pd; 1192 disk->d_consumer = rcp; 1193 rcp->private = disk; 1194 1195 g_raid_get_disk_info(disk); 1196 1197 g_raid_md_promise_new_disk(disk); 1198 1199 sx_xunlock(&sc->sc_lock); 1200 g_topology_lock(); 1201 *gp = geom; 1202 return (result); 1203} 1204 1205static int 1206g_raid_md_event_promise(struct g_raid_md_object *md, 1207 struct g_raid_disk *disk, u_int event) 1208{ 1209 struct g_raid_softc *sc; 1210 1211 sc = md->mdo_softc; 1212 if (disk == NULL) 1213 return (-1); 1214 switch (event) { 1215 case G_RAID_DISK_E_DISCONNECTED: 1216 /* Delete disk. */ 1217 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1218 g_raid_destroy_disk(disk); 1219 g_raid_md_promise_purge_volumes(sc); 1220 1221 /* Write updated metadata to all disks. */ 1222 g_raid_md_write_promise(md, NULL, NULL, NULL); 1223 1224 /* Check if anything left. */ 1225 if (g_raid_ndisks(sc, -1) == 0) 1226 g_raid_destroy_node(sc, 0); 1227 else 1228 g_raid_md_promise_refill(sc); 1229 return (0); 1230 } 1231 return (-2); 1232} 1233 1234static int 1235g_raid_md_volume_event_promise(struct g_raid_md_object *md, 1236 struct g_raid_volume *vol, u_int event) 1237{ 1238 struct g_raid_md_promise_pervolume *pv; 1239 1240 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1241 switch (event) { 1242 case G_RAID_VOLUME_E_STARTMD: 1243 if (!pv->pv_started) 1244 g_raid_md_promise_start(vol); 1245 return (0); 1246 } 1247 return (-2); 1248} 1249 1250static int 1251g_raid_md_ctl_promise(struct g_raid_md_object *md, 1252 struct gctl_req *req) 1253{ 1254 struct g_raid_softc *sc; 1255 struct g_raid_volume *vol, *vol1; 1256 struct g_raid_subdisk *sd; 1257 struct g_raid_disk *disk, *disks[PROMISE_MAX_DISKS]; 1258 struct g_raid_md_promise_perdisk *pd; 1259 struct g_raid_md_promise_pervolume *pv; 1260 struct g_consumer *cp; 1261 struct g_provider *pp; 1262 char arg[16]; 1263 const char *nodename, *verb, *volname, *levelname, *diskname; 1264 char *tmp; 1265 int *nargs, *force; 1266 off_t esize, offs[PROMISE_MAX_DISKS], size, sectorsize, strip; 1267 intmax_t *sizearg, *striparg; 1268 int numdisks, i, len, level, qual; 1269 int error; 1270 1271 sc = md->mdo_softc; 1272 verb = gctl_get_param(req, "verb", NULL); 1273 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 1274 error = 0; 1275 if (strcmp(verb, "label") == 0) { 1276 1277 if (*nargs < 4) { 1278 gctl_error(req, "Invalid number of arguments."); 1279 return (-1); 1280 } 1281 volname = gctl_get_asciiparam(req, "arg1"); 1282 if (volname == NULL) { 1283 gctl_error(req, "No volume name."); 1284 return (-2); 1285 } 1286 levelname = gctl_get_asciiparam(req, "arg2"); 1287 if (levelname == NULL) { 1288 gctl_error(req, "No RAID level."); 1289 return (-3); 1290 } 1291 if (strcasecmp(levelname, "RAID5") == 0) 1292 levelname = "RAID5-LA"; 1293 if (g_raid_volume_str2level(levelname, &level, &qual)) { 1294 gctl_error(req, "Unknown RAID level '%s'.", levelname); 1295 return (-4); 1296 } 1297 numdisks = *nargs - 3; 1298 force = gctl_get_paraml(req, "force", sizeof(*force)); 1299 if (!g_raid_md_promise_supported(level, qual, numdisks, 1300 force ? *force : 0)) { 1301 gctl_error(req, "Unsupported RAID level " 1302 "(0x%02x/0x%02x), or number of disks (%d).", 1303 level, qual, numdisks); 1304 return (-5); 1305 } 1306 1307 /* Search for disks, connect them and probe. */ 1308 size = INT64_MAX; 1309 sectorsize = 0; 1310 bzero(disks, sizeof(disks)); 1311 bzero(offs, sizeof(offs)); 1312 for (i = 0; i < numdisks; i++) { 1313 snprintf(arg, sizeof(arg), "arg%d", i + 3); 1314 diskname = gctl_get_asciiparam(req, arg); 1315 if (diskname == NULL) { 1316 gctl_error(req, "No disk name (%s).", arg); 1317 error = -6; 1318 break; 1319 } 1320 if (strcmp(diskname, "NONE") == 0) 1321 continue; 1322 1323 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1324 if (disk->d_consumer != NULL && 1325 disk->d_consumer->provider != NULL && 1326 strcmp(disk->d_consumer->provider->name, 1327 diskname) == 0) 1328 break; 1329 } 1330 if (disk != NULL) { 1331 if (disk->d_state != G_RAID_DISK_S_ACTIVE) { 1332 gctl_error(req, "Disk '%s' is in a " 1333 "wrong state (%s).", diskname, 1334 g_raid_disk_state2str(disk->d_state)); 1335 error = -7; 1336 break; 1337 } 1338 pd = disk->d_md_data; 1339 if (pd->pd_subdisks >= PROMISE_MAX_SUBDISKS) { 1340 gctl_error(req, "Disk '%s' already " 1341 "used by %d volumes.", 1342 diskname, pd->pd_subdisks); 1343 error = -7; 1344 break; 1345 } 1346 pp = disk->d_consumer->provider; 1347 disks[i] = disk; 1348 promise_meta_unused_range(pd->pd_meta, 1349 pd->pd_subdisks, 1350 pp->mediasize / pp->sectorsize, 1351 &offs[i], &esize); 1352 size = MIN(size, (off_t)esize * pp->sectorsize); 1353 sectorsize = MAX(sectorsize, pp->sectorsize); 1354 continue; 1355 } 1356 1357 g_topology_lock(); 1358 cp = g_raid_open_consumer(sc, diskname); 1359 if (cp == NULL) { 1360 gctl_error(req, "Can't open disk '%s'.", 1361 diskname); 1362 g_topology_unlock(); 1363 error = -8; 1364 break; 1365 } 1366 pp = cp->provider; 1367 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1368 disk = g_raid_create_disk(sc); 1369 disk->d_md_data = (void *)pd; 1370 disk->d_consumer = cp; 1371 disks[i] = disk; 1372 cp->private = disk; 1373 g_topology_unlock(); 1374 1375 g_raid_get_disk_info(disk); 1376 1377 /* Reserve some space for metadata. */ 1378 size = MIN(size, pp->mediasize - 131072llu * pp->sectorsize); 1379 sectorsize = MAX(sectorsize, pp->sectorsize); 1380 } 1381 if (error != 0) { 1382 for (i = 0; i < numdisks; i++) { 1383 if (disks[i] != NULL && 1384 disks[i]->d_state == G_RAID_DISK_S_NONE) 1385 g_raid_destroy_disk(disks[i]); 1386 } 1387 return (error); 1388 } 1389 1390 if (sectorsize <= 0) { 1391 gctl_error(req, "Can't get sector size."); 1392 return (-8); 1393 } 1394 1395 /* Handle size argument. */ 1396 len = sizeof(*sizearg); 1397 sizearg = gctl_get_param(req, "size", &len); 1398 if (sizearg != NULL && len == sizeof(*sizearg) && 1399 *sizearg > 0) { 1400 if (*sizearg > size) { 1401 gctl_error(req, "Size too big %lld > %lld.", 1402 (long long)*sizearg, (long long)size); 1403 return (-9); 1404 } 1405 size = *sizearg; 1406 } 1407 1408 /* Handle strip argument. */ 1409 strip = 131072; 1410 len = sizeof(*striparg); 1411 striparg = gctl_get_param(req, "strip", &len); 1412 if (striparg != NULL && len == sizeof(*striparg) && 1413 *striparg > 0) { 1414 if (*striparg < sectorsize) { 1415 gctl_error(req, "Strip size too small."); 1416 return (-10); 1417 } 1418 if (*striparg % sectorsize != 0) { 1419 gctl_error(req, "Incorrect strip size."); 1420 return (-11); 1421 } 1422 strip = *striparg; 1423 } 1424 1425 /* Round size down to strip or sector. */ 1426 if (level == G_RAID_VOLUME_RL_RAID1 || 1427 level == G_RAID_VOLUME_RL_SINGLE || 1428 level == G_RAID_VOLUME_RL_CONCAT) 1429 size -= (size % sectorsize); 1430 else if (level == G_RAID_VOLUME_RL_RAID1E && 1431 (numdisks & 1) != 0) 1432 size -= (size % (2 * strip)); 1433 else 1434 size -= (size % strip); 1435 if (size <= 0) { 1436 gctl_error(req, "Size too small."); 1437 return (-13); 1438 } 1439 1440 /* We have all we need, create things: volume, ... */ 1441 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO); 1442 arc4rand(&pv->pv_id, sizeof(pv->pv_id), 0); 1443 pv->pv_generation = 0; 1444 pv->pv_started = 1; 1445 vol = g_raid_create_volume(sc, volname, -1); 1446 vol->v_md_data = pv; 1447 vol->v_raid_level = level; 1448 vol->v_raid_level_qualifier = qual; 1449 vol->v_strip_size = strip; 1450 vol->v_disks_count = numdisks; 1451 if (level == G_RAID_VOLUME_RL_RAID0 || 1452 level == G_RAID_VOLUME_RL_CONCAT || 1453 level == G_RAID_VOLUME_RL_SINGLE) 1454 vol->v_mediasize = size * numdisks; 1455 else if (level == G_RAID_VOLUME_RL_RAID1) 1456 vol->v_mediasize = size; 1457 else if (level == G_RAID_VOLUME_RL_RAID3 || 1458 level == G_RAID_VOLUME_RL_RAID5) 1459 vol->v_mediasize = size * (numdisks - 1); 1460 else { /* RAID1E */ 1461 vol->v_mediasize = ((size * numdisks) / strip / 2) * 1462 strip; 1463 } 1464 vol->v_sectorsize = sectorsize; 1465 g_raid_start_volume(vol); 1466 1467 /* , and subdisks. */ 1468 for (i = 0; i < numdisks; i++) { 1469 disk = disks[i]; 1470 sd = &vol->v_subdisks[i]; 1471 sd->sd_disk = disk; 1472 sd->sd_offset = (off_t)offs[i] * 512; 1473 sd->sd_size = size; 1474 if (disk == NULL) 1475 continue; 1476 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 1477 g_raid_change_disk_state(disk, 1478 G_RAID_DISK_S_ACTIVE); 1479 g_raid_change_subdisk_state(sd, 1480 G_RAID_SUBDISK_S_ACTIVE); 1481 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 1482 G_RAID_EVENT_SUBDISK); 1483 } 1484 1485 /* Write metadata based on created entities. */ 1486 G_RAID_DEBUG1(0, sc, "Array started."); 1487 g_raid_md_write_promise(md, vol, NULL, NULL); 1488 1489 /* Pickup any STALE/SPARE disks to refill array if needed. */ 1490 g_raid_md_promise_refill(sc); 1491 1492 g_raid_event_send(vol, G_RAID_VOLUME_E_START, 1493 G_RAID_EVENT_VOLUME); 1494 return (0); 1495 } 1496 if (strcmp(verb, "add") == 0) { 1497 1498 gctl_error(req, "`add` command is not applicable, " 1499 "use `label` instead."); 1500 return (-99); 1501 } 1502 if (strcmp(verb, "delete") == 0) { 1503 1504 nodename = gctl_get_asciiparam(req, "arg0"); 1505 if (nodename != NULL && strcasecmp(sc->sc_name, nodename) != 0) 1506 nodename = NULL; 1507 1508 /* Full node destruction. */ 1509 if (*nargs == 1 && nodename != NULL) { 1510 /* Check if some volume is still open. */ 1511 force = gctl_get_paraml(req, "force", sizeof(*force)); 1512 if (force != NULL && *force == 0 && 1513 g_raid_nopens(sc) != 0) { 1514 gctl_error(req, "Some volume is still open."); 1515 return (-4); 1516 } 1517 1518 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1519 if (disk->d_consumer) 1520 promise_meta_erase(disk->d_consumer); 1521 } 1522 g_raid_destroy_node(sc, 0); 1523 return (0); 1524 } 1525 1526 /* Destroy specified volume. If it was last - all node. */ 1527 if (*nargs > 2) { 1528 gctl_error(req, "Invalid number of arguments."); 1529 return (-1); 1530 } 1531 volname = gctl_get_asciiparam(req, 1532 nodename != NULL ? "arg1" : "arg0"); 1533 if (volname == NULL) { 1534 gctl_error(req, "No volume name."); 1535 return (-2); 1536 } 1537 1538 /* Search for volume. */ 1539 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1540 if (strcmp(vol->v_name, volname) == 0) 1541 break; 1542 pp = vol->v_provider; 1543 if (pp == NULL) 1544 continue; 1545 if (strcmp(pp->name, volname) == 0) 1546 break; 1547 if (strncmp(pp->name, "raid/", 5) == 0 && 1548 strcmp(pp->name + 5, volname) == 0) 1549 break; 1550 } 1551 if (vol == NULL) { 1552 i = strtol(volname, &tmp, 10); 1553 if (verb != volname && tmp[0] == 0) { 1554 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1555 if (vol->v_global_id == i) 1556 break; 1557 } 1558 } 1559 } 1560 if (vol == NULL) { 1561 gctl_error(req, "Volume '%s' not found.", volname); 1562 return (-3); 1563 } 1564 1565 /* Check if volume is still open. */ 1566 force = gctl_get_paraml(req, "force", sizeof(*force)); 1567 if (force != NULL && *force == 0 && 1568 vol->v_provider_open != 0) { 1569 gctl_error(req, "Volume is still open."); 1570 return (-4); 1571 } 1572 1573 /* Destroy volume and potentially node. */ 1574 i = 0; 1575 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next) 1576 i++; 1577 if (i >= 2) { 1578 g_raid_destroy_volume(vol); 1579 g_raid_md_promise_purge_disks(sc); 1580 g_raid_md_write_promise(md, NULL, NULL, NULL); 1581 } else { 1582 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1583 if (disk->d_consumer) 1584 promise_meta_erase(disk->d_consumer); 1585 } 1586 g_raid_destroy_node(sc, 0); 1587 } 1588 return (0); 1589 } 1590 if (strcmp(verb, "remove") == 0 || 1591 strcmp(verb, "fail") == 0) { 1592 if (*nargs < 2) { 1593 gctl_error(req, "Invalid number of arguments."); 1594 return (-1); 1595 } 1596 for (i = 1; i < *nargs; i++) { 1597 snprintf(arg, sizeof(arg), "arg%d", i); 1598 diskname = gctl_get_asciiparam(req, arg); 1599 if (diskname == NULL) { 1600 gctl_error(req, "No disk name (%s).", arg); 1601 error = -2; 1602 break; 1603 } 1604 if (strncmp(diskname, "/dev/", 5) == 0) 1605 diskname += 5; 1606 1607 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1608 if (disk->d_consumer != NULL && 1609 disk->d_consumer->provider != NULL && 1610 strcmp(disk->d_consumer->provider->name, 1611 diskname) == 0) 1612 break; 1613 } 1614 if (disk == NULL) { 1615 gctl_error(req, "Disk '%s' not found.", 1616 diskname); 1617 error = -3; 1618 break; 1619 } 1620 1621 if (strcmp(verb, "fail") == 0) { 1622 g_raid_md_fail_disk_promise(md, NULL, disk); 1623 continue; 1624 } 1625 1626 /* Erase metadata on deleting disk and destroy it. */ 1627 promise_meta_erase(disk->d_consumer); 1628 g_raid_destroy_disk(disk); 1629 } 1630 g_raid_md_promise_purge_volumes(sc); 1631 1632 /* Write updated metadata to remaining disks. */ 1633 g_raid_md_write_promise(md, NULL, NULL, NULL); 1634 1635 /* Check if anything left. */ 1636 if (g_raid_ndisks(sc, -1) == 0) 1637 g_raid_destroy_node(sc, 0); 1638 else 1639 g_raid_md_promise_refill(sc); 1640 return (error); 1641 } 1642 if (strcmp(verb, "insert") == 0) { 1643 if (*nargs < 2) { 1644 gctl_error(req, "Invalid number of arguments."); 1645 return (-1); 1646 } 1647 for (i = 1; i < *nargs; i++) { 1648 /* Get disk name. */ 1649 snprintf(arg, sizeof(arg), "arg%d", i); 1650 diskname = gctl_get_asciiparam(req, arg); 1651 if (diskname == NULL) { 1652 gctl_error(req, "No disk name (%s).", arg); 1653 error = -3; 1654 break; 1655 } 1656 1657 /* Try to find provider with specified name. */ 1658 g_topology_lock(); 1659 cp = g_raid_open_consumer(sc, diskname); 1660 if (cp == NULL) { 1661 gctl_error(req, "Can't open disk '%s'.", 1662 diskname); 1663 g_topology_unlock(); 1664 error = -4; 1665 break; 1666 } 1667 pp = cp->provider; 1668 g_topology_unlock(); 1669 1670 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1671 1672 disk = g_raid_create_disk(sc); 1673 disk->d_consumer = cp; 1674 disk->d_md_data = (void *)pd; 1675 cp->private = disk; 1676 1677 g_raid_get_disk_info(disk); 1678 1679 /* Welcome the "new" disk. */ 1680 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE); 1681 promise_meta_write_spare(cp); 1682 g_raid_md_promise_refill(sc); 1683 } 1684 return (error); 1685 } 1686 return (-100); 1687} 1688 1689static int 1690g_raid_md_write_promise(struct g_raid_md_object *md, struct g_raid_volume *tvol, 1691 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1692{ 1693 struct g_raid_softc *sc; 1694 struct g_raid_volume *vol; 1695 struct g_raid_subdisk *sd; 1696 struct g_raid_disk *disk; 1697 struct g_raid_md_promise_perdisk *pd; 1698 struct g_raid_md_promise_pervolume *pv; 1699 struct promise_raid_conf *meta; 1700 off_t rebuild_lba64; 1701 int i, j, pos, rebuild; 1702 1703 sc = md->mdo_softc; 1704 1705 if (sc->sc_stopping == G_RAID_DESTROY_HARD) 1706 return (0); 1707 1708 /* Generate new per-volume metadata for affected volumes. */ 1709 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1710 if (vol->v_stopping) 1711 continue; 1712 1713 /* Skip volumes not related to specified targets. */ 1714 if (tvol != NULL && vol != tvol) 1715 continue; 1716 if (tsd != NULL && vol != tsd->sd_volume) 1717 continue; 1718 if (tdisk != NULL) { 1719 for (i = 0; i < vol->v_disks_count; i++) { 1720 if (vol->v_subdisks[i].sd_disk == tdisk) 1721 break; 1722 } 1723 if (i >= vol->v_disks_count) 1724 continue; 1725 } 1726 1727 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1728 pv->pv_generation++; 1729 1730 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO); 1731 if (pv->pv_meta != NULL) 1732 memcpy(meta, pv->pv_meta, sizeof(*meta)); 1733 memcpy(meta->promise_id, PROMISE_MAGIC, 1734 sizeof(PROMISE_MAGIC) - 1); 1735 meta->dummy_0 = 0x00020000; 1736 meta->integrity = PROMISE_I_VALID; 1737 1738 meta->generation = pv->pv_generation; 1739 meta->status = PROMISE_S_VALID | PROMISE_S_ONLINE | 1740 PROMISE_S_INITED | PROMISE_S_READY; 1741 if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED) 1742 meta->status |= PROMISE_S_DEGRADED; 1743 if (vol->v_dirty) 1744 meta->status |= PROMISE_S_MARKED; /* XXX: INVENTED! */ 1745 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0 || 1746 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) 1747 meta->type = PROMISE_T_RAID0; 1748 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1749 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) 1750 meta->type = PROMISE_T_RAID1; 1751 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3) 1752 meta->type = PROMISE_T_RAID3; 1753 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) 1754 meta->type = PROMISE_T_RAID5; 1755 else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT) 1756 meta->type = PROMISE_T_SPAN; 1757 else 1758 meta->type = PROMISE_T_JBOD; 1759 meta->total_disks = vol->v_disks_count; 1760 meta->stripe_shift = ffs(vol->v_strip_size / 1024); 1761 meta->array_width = vol->v_disks_count; 1762 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1763 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) 1764 meta->array_width /= 2; 1765 meta->array_number = vol->v_global_id; 1766 meta->total_sectors = vol->v_mediasize / 512; 1767 meta->total_sectors_high = (vol->v_mediasize / 512) >> 32; 1768 meta->sector_size = vol->v_sectorsize / 512; 1769 meta->cylinders = meta->total_sectors / (255 * 63) - 1; 1770 meta->heads = 254; 1771 meta->sectors = 63; 1772 meta->volume_id = pv->pv_id; 1773 rebuild_lba64 = UINT64_MAX; 1774 rebuild = 0; 1775 for (i = 0; i < vol->v_disks_count; i++) { 1776 sd = &vol->v_subdisks[i]; 1777 /* For RAID0+1 we need to translate order. */ 1778 pos = promise_meta_translate_disk(vol, i); 1779 meta->disks[pos].flags = PROMISE_F_VALID | 1780 PROMISE_F_ASSIGNED; 1781 if (sd->sd_state == G_RAID_SUBDISK_S_NONE) { 1782 meta->disks[pos].flags |= 0; 1783 } else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED) { 1784 meta->disks[pos].flags |= 1785 PROMISE_F_DOWN | PROMISE_F_REDIR; 1786 } else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD) { 1787 meta->disks[pos].flags |= 1788 PROMISE_F_ONLINE | PROMISE_F_REDIR; 1789 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) { 1790 rebuild_lba64 = MIN(rebuild_lba64, 1791 sd->sd_rebuild_pos / 512); 1792 } else 1793 rebuild_lba64 = 0; 1794 rebuild = 1; 1795 } else { 1796 meta->disks[pos].flags |= PROMISE_F_ONLINE; 1797 if (sd->sd_state < G_RAID_SUBDISK_S_ACTIVE) { 1798 meta->status |= PROMISE_S_MARKED; 1799 if (sd->sd_state == G_RAID_SUBDISK_S_RESYNC) { 1800 rebuild_lba64 = MIN(rebuild_lba64, 1801 sd->sd_rebuild_pos / 512); 1802 } else 1803 rebuild_lba64 = 0; 1804 } 1805 } 1806 if (pv->pv_meta != NULL) { 1807 meta->disks[pos].id = pv->pv_meta->disks[pos].id; 1808 } else { 1809 meta->disks[pos].number = i * 2; 1810 arc4rand(&meta->disks[pos].id, 1811 sizeof(meta->disks[pos].id), 0); 1812 } 1813 } 1814 promise_meta_put_name(meta, vol->v_name); 1815 1816 /* Try to mimic AMD BIOS rebuild/resync behavior. */ 1817 if (rebuild_lba64 != UINT64_MAX) { 1818 if (rebuild) 1819 meta->magic_3 = 0x03040010UL; /* Rebuild? */ 1820 else 1821 meta->magic_3 = 0x03040008UL; /* Resync? */ 1822 /* Translate from per-disk to per-volume LBA. */ 1823 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1824 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1825 rebuild_lba64 *= meta->array_width; 1826 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3 || 1827 vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) { 1828 rebuild_lba64 *= meta->array_width - 1; 1829 } else 1830 rebuild_lba64 = 0; 1831 } else 1832 meta->magic_3 = 0x03000000UL; 1833 meta->rebuild_lba64 = rebuild_lba64; 1834 meta->magic_4 = 0x04010101UL; 1835 1836 /* Replace per-volume metadata with new. */ 1837 if (pv->pv_meta != NULL) 1838 free(pv->pv_meta, M_MD_PROMISE); 1839 pv->pv_meta = meta; 1840 1841 /* Copy new metadata to the disks, adding or replacing old. */ 1842 for (i = 0; i < vol->v_disks_count; i++) { 1843 sd = &vol->v_subdisks[i]; 1844 disk = sd->sd_disk; 1845 if (disk == NULL) 1846 continue; 1847 /* For RAID0+1 we need to translate order. */ 1848 pos = promise_meta_translate_disk(vol, i); 1849 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1850 for (j = 0; j < pd->pd_subdisks; j++) { 1851 if (pd->pd_meta[j]->volume_id == meta->volume_id) 1852 break; 1853 } 1854 if (j == pd->pd_subdisks) 1855 pd->pd_subdisks++; 1856 if (pd->pd_meta[j] != NULL) 1857 free(pd->pd_meta[j], M_MD_PROMISE); 1858 pd->pd_meta[j] = promise_meta_copy(meta); 1859 pd->pd_meta[j]->disk = meta->disks[pos]; 1860 pd->pd_meta[j]->disk.number = pos; 1861 pd->pd_meta[j]->disk_offset_high = 1862 (sd->sd_offset / 512) >> 32; 1863 pd->pd_meta[j]->disk_offset = sd->sd_offset / 512; 1864 pd->pd_meta[j]->disk_sectors_high = 1865 (sd->sd_size / 512) >> 32; 1866 pd->pd_meta[j]->disk_sectors = sd->sd_size / 512; 1867 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) { 1868 pd->pd_meta[j]->disk_rebuild_high = 1869 (sd->sd_rebuild_pos / 512) >> 32; 1870 pd->pd_meta[j]->disk_rebuild = 1871 sd->sd_rebuild_pos / 512; 1872 } else if (sd->sd_state < G_RAID_SUBDISK_S_REBUILD) { 1873 pd->pd_meta[j]->disk_rebuild_high = 0; 1874 pd->pd_meta[j]->disk_rebuild = 0; 1875 } else { 1876 pd->pd_meta[j]->disk_rebuild_high = UINT32_MAX; 1877 pd->pd_meta[j]->disk_rebuild = UINT32_MAX; 1878 } 1879 pd->pd_updated = 1; 1880 } 1881 } 1882 1883 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1884 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1885 if (disk->d_state != G_RAID_DISK_S_ACTIVE) 1886 continue; 1887 if (!pd->pd_updated) 1888 continue; 1889 G_RAID_DEBUG(1, "Writing Promise metadata to %s", 1890 g_raid_get_diskname(disk)); 1891 for (i = 0; i < pd->pd_subdisks; i++) 1892 g_raid_md_promise_print(pd->pd_meta[i]); 1893 promise_meta_write(disk->d_consumer, 1894 pd->pd_meta, pd->pd_subdisks); 1895 pd->pd_updated = 0; 1896 } 1897 1898 return (0); 1899} 1900 1901static int 1902g_raid_md_fail_disk_promise(struct g_raid_md_object *md, 1903 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1904{ 1905 struct g_raid_softc *sc; 1906 struct g_raid_md_promise_perdisk *pd; 1907 struct g_raid_subdisk *sd; 1908 int i, pos; 1909 1910 sc = md->mdo_softc; 1911 pd = (struct g_raid_md_promise_perdisk *)tdisk->d_md_data; 1912 1913 /* We can't fail disk that is not a part of array now. */ 1914 if (tdisk->d_state != G_RAID_DISK_S_ACTIVE) 1915 return (-1); 1916 1917 /* 1918 * Mark disk as failed in metadata and try to write that metadata 1919 * to the disk itself to prevent it's later resurrection as STALE. 1920 */ 1921 if (pd->pd_subdisks > 0 && tdisk->d_consumer != NULL) 1922 G_RAID_DEBUG(1, "Writing Promise metadata to %s", 1923 g_raid_get_diskname(tdisk)); 1924 for (i = 0; i < pd->pd_subdisks; i++) { 1925 pd->pd_meta[i]->disk.flags |= 1926 PROMISE_F_DOWN | PROMISE_F_REDIR; 1927 pos = pd->pd_meta[i]->disk.number; 1928 if (pos >= 0 && pos < PROMISE_MAX_DISKS) { 1929 pd->pd_meta[i]->disks[pos].flags |= 1930 PROMISE_F_DOWN | PROMISE_F_REDIR; 1931 } 1932 g_raid_md_promise_print(pd->pd_meta[i]); 1933 } 1934 if (tdisk->d_consumer != NULL) 1935 promise_meta_write(tdisk->d_consumer, 1936 pd->pd_meta, pd->pd_subdisks); 1937 1938 /* Change states. */ 1939 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED); 1940 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) { 1941 g_raid_change_subdisk_state(sd, 1942 G_RAID_SUBDISK_S_FAILED); 1943 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED, 1944 G_RAID_EVENT_SUBDISK); 1945 } 1946 1947 /* Write updated metadata to remaining disks. */ 1948 g_raid_md_write_promise(md, NULL, NULL, tdisk); 1949 1950 g_raid_md_promise_refill(sc); 1951 return (0); 1952} 1953 1954static int 1955g_raid_md_free_disk_promise(struct g_raid_md_object *md, 1956 struct g_raid_disk *disk) 1957{ 1958 struct g_raid_md_promise_perdisk *pd; 1959 int i; 1960 1961 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1962 for (i = 0; i < pd->pd_subdisks; i++) { 1963 if (pd->pd_meta[i] != NULL) { 1964 free(pd->pd_meta[i], M_MD_PROMISE); 1965 pd->pd_meta[i] = NULL; 1966 } 1967 } 1968 free(pd, M_MD_PROMISE); 1969 disk->d_md_data = NULL; 1970 return (0); 1971} 1972 1973static int 1974g_raid_md_free_volume_promise(struct g_raid_md_object *md, 1975 struct g_raid_volume *vol) 1976{ 1977 struct g_raid_md_promise_pervolume *pv; 1978 1979 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1980 if (pv && pv->pv_meta != NULL) { 1981 free(pv->pv_meta, M_MD_PROMISE); 1982 pv->pv_meta = NULL; 1983 } 1984 if (pv && !pv->pv_started) { 1985 pv->pv_started = 1; 1986 callout_stop(&pv->pv_start_co); 1987 } 1988 free(pv, M_MD_PROMISE); 1989 vol->v_md_data = NULL; 1990 return (0); 1991} 1992 1993static int 1994g_raid_md_free_promise(struct g_raid_md_object *md) 1995{ 1996 1997 return (0); 1998} 1999 2000G_RAID_MD_DECLARE(promise, "Promise"); 2001