1 /*- 2 * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org> 3 * Copyright (c) 2000 - 2008 Søren Schmidt <sos@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/bio.h> 33 #include <sys/endian.h> 34 #include <sys/kernel.h> 35 #include <sys/kobj.h> 36 #include <sys/limits.h> 37 #include <sys/lock.h> 38 #include <sys/malloc.h> 39 #include <sys/mutex.h> 40 #include <sys/systm.h> 41 #include <geom/geom.h> 42 #include "geom/raid/g_raid.h" 43 #include "g_raid_md_if.h" 44 45 static 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 51 struct 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 68 struct 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; 140 141 struct g_raid_md_promise_perdisk { 142 int pd_updated; 143 int pd_subdisks; 144 struct promise_raid_conf *pd_meta[PROMISE_MAX_SUBDISKS]; 145 }; 146 147 struct 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 }; 155 156 static g_raid_md_create_t g_raid_md_create_promise; 157 static g_raid_md_taste_t g_raid_md_taste_promise; 158 static g_raid_md_event_t g_raid_md_event_promise; 159 static g_raid_md_volume_event_t g_raid_md_volume_event_promise; 160 static g_raid_md_ctl_t g_raid_md_ctl_promise; 161 static g_raid_md_write_t g_raid_md_write_promise; 162 static g_raid_md_fail_disk_t g_raid_md_fail_disk_promise; 163 static g_raid_md_free_disk_t g_raid_md_free_disk_promise; 164 static g_raid_md_free_volume_t g_raid_md_free_volume_promise; 165 static g_raid_md_free_t g_raid_md_free_promise; 166 167 static 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 }; 180 181 static 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 }; 188 189 190 static void 191 g_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 } 238 239 static struct promise_raid_conf * 240 promise_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 } 248 249 static int 250 promise_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 } 260 261 static int 262 promise_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 } 296 297 static int 298 promise_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 } 310 311 static void 312 promise_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 } 324 325 static void 326 promise_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 } 332 333 static int 334 promise_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; 344 345 if (pp->sectorsize * 4 > MAXPHYS) { 346 G_RAID_DEBUG(1, "%s: Blocksize is too big.", pp->name); 347 return (subdisks); 348 } 349 next: 350 /* Read metadata block. */ 351 buf = g_read_data(cp, pp->mediasize - pp->sectorsize * 352 (63 - subdisks * PROMISE_META_OFFSET), 353 pp->sectorsize * 4, &error); 354 if (buf == NULL) { 355 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).", 356 pp->name, error); 357 return (subdisks); 358 } 359 meta = (struct promise_raid_conf *)buf; 360 361 /* Check if this is an Promise RAID struct */ 362 if (strncmp(meta->promise_id, PROMISE_MAGIC, strlen(PROMISE_MAGIC)) && 363 strncmp(meta->promise_id, FREEBSD_MAGIC, strlen(FREEBSD_MAGIC))) { 364 if (subdisks == 0) 365 G_RAID_DEBUG(1, 366 "Promise signature check failed on %s", pp->name); 367 g_free(buf); 368 return (subdisks); 369 } 370 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK); 371 memcpy(meta, buf, MIN(sizeof(*meta), pp->sectorsize * 4)); 372 g_free(buf); 373 374 /* Check metadata checksum. */ 375 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++) 376 checksum += *ptr++; 377 if (checksum != meta->checksum) { 378 G_RAID_DEBUG(1, "Promise checksum check failed on %s", pp->name); 379 free(meta, M_MD_PROMISE); 380 return (subdisks); 381 } 382 383 if ((meta->integrity & PROMISE_I_VALID) == 0) { 384 G_RAID_DEBUG(1, "Promise metadata is invalid on %s", pp->name); 385 free(meta, M_MD_PROMISE); 386 return (subdisks); 387 } 388 389 if (meta->total_disks > PROMISE_MAX_DISKS) { 390 G_RAID_DEBUG(1, "Wrong number of disks on %s (%d)", 391 pp->name, meta->total_disks); 392 free(meta, M_MD_PROMISE); 393 return (subdisks); 394 } 395 396 /* Remove filler garbage from fields used in newer metadata. */ 397 if (meta->disk_offset_high == 0x8b8c8d8e && 398 meta->disk_sectors_high == 0x8788898a && 399 meta->disk_rebuild_high == 0x83848586) { 400 meta->disk_offset_high = 0; 401 meta->disk_sectors_high = 0; 402 if (meta->disk_rebuild == UINT32_MAX) 403 meta->disk_rebuild_high = UINT32_MAX; 404 else 405 meta->disk_rebuild_high = 0; 406 if (meta->total_sectors_high == 0x15161718) { 407 meta->total_sectors_high = 0; 408 meta->backup_time = 0; 409 if (meta->rebuild_lba64 == 0x2122232425262728) 410 meta->rebuild_lba64 = UINT64_MAX; 411 } 412 } 413 if (meta->sector_size < 1 || meta->sector_size > 8) 414 meta->sector_size = 1; 415 416 /* Save this part and look for next. */ 417 *metaarr = meta; 418 metaarr++; 419 subdisks++; 420 if (subdisks < PROMISE_MAX_SUBDISKS) 421 goto next; 422 423 return (subdisks); 424 } 425 426 static int 427 promise_meta_write(struct g_consumer *cp, 428 struct promise_raid_conf **metaarr, int nsd) 429 { 430 struct g_provider *pp; 431 struct promise_raid_conf *meta; 432 char *buf; 433 off_t off, size; 434 int error, i, subdisk, fake; 435 uint32_t checksum, *ptr; 436 437 pp = cp->provider; 438 subdisk = 0; 439 fake = 0; 440 next: 441 buf = malloc(pp->sectorsize * 4, M_MD_PROMISE, M_WAITOK | M_ZERO); 442 meta = NULL; 443 if (subdisk < nsd) { 444 meta = metaarr[subdisk]; 445 } else if (!fake && promise_meta_unused_range(metaarr, nsd, 446 cp->provider->mediasize / cp->provider->sectorsize, 447 &off, &size)) { 448 /* Optionally add record for unused space. */ 449 meta = (struct promise_raid_conf *)buf; 450 memcpy(&meta->promise_id[0], PROMISE_MAGIC, 451 sizeof(PROMISE_MAGIC) - 1); 452 meta->dummy_0 = 0x00020000; 453 meta->integrity = PROMISE_I_VALID; 454 meta->disk.flags = PROMISE_F_ONLINE | PROMISE_F_VALID; 455 meta->disk.number = 0xff; 456 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0); 457 meta->disk_offset_high = off >> 32; 458 meta->disk_offset = (uint32_t)off; 459 meta->disk_sectors_high = size >> 32; 460 meta->disk_sectors = (uint32_t)size; 461 meta->disk_rebuild_high = UINT32_MAX; 462 meta->disk_rebuild = UINT32_MAX; 463 fake = 1; 464 } 465 if (meta != NULL) { 466 /* Recalculate checksum for case if metadata were changed. */ 467 meta->checksum = 0; 468 for (checksum = 0, ptr = (uint32_t *)meta, i = 0; i < 511; i++) 469 checksum += *ptr++; 470 meta->checksum = checksum; 471 memcpy(buf, meta, MIN(pp->sectorsize * 4, sizeof(*meta))); 472 } 473 error = g_write_data(cp, pp->mediasize - pp->sectorsize * 474 (63 - subdisk * PROMISE_META_OFFSET), 475 buf, pp->sectorsize * 4); 476 if (error != 0) { 477 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).", 478 pp->name, error); 479 } 480 free(buf, M_MD_PROMISE); 481 482 subdisk++; 483 if (subdisk < PROMISE_MAX_SUBDISKS) 484 goto next; 485 486 return (error); 487 } 488 489 static int 490 promise_meta_erase(struct g_consumer *cp) 491 { 492 struct g_provider *pp; 493 char *buf; 494 int error, subdisk; 495 496 pp = cp->provider; 497 buf = malloc(4 * pp->sectorsize, M_MD_PROMISE, M_WAITOK | M_ZERO); 498 for (subdisk = 0; subdisk < PROMISE_MAX_SUBDISKS; subdisk++) { 499 error = g_write_data(cp, pp->mediasize - pp->sectorsize * 500 (63 - subdisk * PROMISE_META_OFFSET), 501 buf, 4 * pp->sectorsize); 502 if (error != 0) { 503 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).", 504 pp->name, error); 505 } 506 } 507 free(buf, M_MD_PROMISE); 508 return (error); 509 } 510 511 static int 512 promise_meta_write_spare(struct g_consumer *cp) 513 { 514 struct promise_raid_conf *meta; 515 off_t tmp; 516 int error; 517 518 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO); 519 memcpy(&meta->promise_id[0], PROMISE_MAGIC, sizeof(PROMISE_MAGIC) - 1); 520 meta->dummy_0 = 0x00020000; 521 meta->integrity = PROMISE_I_VALID; 522 meta->disk.flags = PROMISE_F_SPARE | PROMISE_F_ONLINE | PROMISE_F_VALID; 523 meta->disk.number = 0xff; 524 arc4rand(&meta->disk.id, sizeof(meta->disk.id), 0); 525 tmp = cp->provider->mediasize / cp->provider->sectorsize - 131072; 526 meta->disk_sectors_high = tmp >> 32; 527 meta->disk_sectors = (uint32_t)tmp; 528 meta->disk_rebuild_high = UINT32_MAX; 529 meta->disk_rebuild = UINT32_MAX; 530 error = promise_meta_write(cp, &meta, 1); 531 free(meta, M_MD_PROMISE); 532 return (error); 533 } 534 535 static struct g_raid_volume * 536 g_raid_md_promise_get_volume(struct g_raid_softc *sc, uint64_t id) 537 { 538 struct g_raid_volume *vol; 539 struct g_raid_md_promise_pervolume *pv; 540 541 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 542 pv = vol->v_md_data; 543 if (pv->pv_id == id) 544 break; 545 } 546 return (vol); 547 } 548 549 static int 550 g_raid_md_promise_purge_volumes(struct g_raid_softc *sc) 551 { 552 struct g_raid_volume *vol, *tvol; 553 struct g_raid_md_promise_pervolume *pv; 554 int i, res; 555 556 res = 0; 557 TAILQ_FOREACH_SAFE(vol, &sc->sc_volumes, v_next, tvol) { 558 pv = vol->v_md_data; 559 if (!pv->pv_started || vol->v_stopping) 560 continue; 561 for (i = 0; i < vol->v_disks_count; i++) { 562 if (vol->v_subdisks[i].sd_state != G_RAID_SUBDISK_S_NONE) 563 break; 564 } 565 if (i >= vol->v_disks_count) { 566 g_raid_destroy_volume(vol); 567 res = 1; 568 } 569 } 570 return (res); 571 } 572 573 static int 574 g_raid_md_promise_purge_disks(struct g_raid_softc *sc) 575 { 576 struct g_raid_disk *disk, *tdisk; 577 struct g_raid_volume *vol; 578 struct g_raid_md_promise_perdisk *pd; 579 int i, j, res; 580 581 res = 0; 582 TAILQ_FOREACH_SAFE(disk, &sc->sc_disks, d_next, tdisk) { 583 if (disk->d_state == G_RAID_DISK_S_SPARE) 584 continue; 585 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 586 587 /* Scan for deleted volumes. */ 588 for (i = 0; i < pd->pd_subdisks; ) { 589 vol = g_raid_md_promise_get_volume(sc, 590 pd->pd_meta[i]->volume_id); 591 if (vol != NULL && !vol->v_stopping) { 592 i++; 593 continue; 594 } 595 free(pd->pd_meta[i], M_MD_PROMISE); 596 for (j = i; j < pd->pd_subdisks - 1; j++) 597 pd->pd_meta[j] = pd->pd_meta[j + 1]; 598 pd->pd_meta[pd->pd_subdisks - 1] = NULL; 599 pd->pd_subdisks--; 600 pd->pd_updated = 1; 601 } 602 603 /* If there is no metadata left - erase and delete disk. */ 604 if (pd->pd_subdisks == 0) { 605 promise_meta_erase(disk->d_consumer); 606 g_raid_destroy_disk(disk); 607 res = 1; 608 } 609 } 610 return (res); 611 } 612 613 static int 614 g_raid_md_promise_supported(int level, int qual, int disks, int force) 615 { 616 617 if (disks > PROMISE_MAX_DISKS) 618 return (0); 619 switch (level) { 620 case G_RAID_VOLUME_RL_RAID0: 621 if (disks < 1) 622 return (0); 623 if (!force && disks < 2) 624 return (0); 625 break; 626 case G_RAID_VOLUME_RL_RAID1: 627 if (disks < 1) 628 return (0); 629 if (!force && (disks != 2)) 630 return (0); 631 break; 632 case G_RAID_VOLUME_RL_RAID1E: 633 if (disks < 2) 634 return (0); 635 if (disks % 2 != 0) 636 return (0); 637 if (!force && (disks != 4)) 638 return (0); 639 break; 640 case G_RAID_VOLUME_RL_SINGLE: 641 if (disks != 1) 642 return (0); 643 break; 644 case G_RAID_VOLUME_RL_CONCAT: 645 if (disks < 2) 646 return (0); 647 break; 648 case G_RAID_VOLUME_RL_RAID5: 649 if (disks < 3) 650 return (0); 651 if (qual != G_RAID_VOLUME_RLQ_R5LA) 652 return (0); 653 break; 654 default: 655 return (0); 656 } 657 if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE) 658 return (0); 659 return (1); 660 } 661 662 static int 663 g_raid_md_promise_start_disk(struct g_raid_disk *disk, int sdn, 664 struct g_raid_volume *vol) 665 { 666 struct g_raid_softc *sc; 667 struct g_raid_subdisk *sd; 668 struct g_raid_md_promise_perdisk *pd; 669 struct g_raid_md_promise_pervolume *pv; 670 struct promise_raid_conf *meta; 671 off_t eoff, esize, size; 672 int disk_pos, md_disk_pos, i, resurrection = 0; 673 674 sc = disk->d_softc; 675 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 676 677 pv = vol->v_md_data; 678 meta = pv->pv_meta; 679 680 if (sdn >= 0) { 681 /* Find disk position in metadata by its serial. */ 682 md_disk_pos = promise_meta_find_disk(meta, pd->pd_meta[sdn]->disk.id); 683 /* For RAID0+1 we need to translate order. */ 684 disk_pos = promise_meta_translate_disk(vol, md_disk_pos); 685 } else { 686 md_disk_pos = -1; 687 disk_pos = -1; 688 } 689 if (disk_pos < 0) { 690 G_RAID_DEBUG1(1, sc, "Disk %s is not part of the volume %s", 691 g_raid_get_diskname(disk), vol->v_name); 692 /* Failed stale disk is useless for us. */ 693 if (sdn >= 0 && 694 pd->pd_meta[sdn]->disk.flags & PROMISE_F_DOWN) { 695 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED); 696 return (0); 697 } 698 /* If we were given specific metadata subdisk - erase it. */ 699 if (sdn >= 0) { 700 free(pd->pd_meta[sdn], M_MD_PROMISE); 701 for (i = sdn; i < pd->pd_subdisks - 1; i++) 702 pd->pd_meta[i] = pd->pd_meta[i + 1]; 703 pd->pd_meta[pd->pd_subdisks - 1] = NULL; 704 pd->pd_subdisks--; 705 } 706 /* If we are in the start process, that's all for now. */ 707 if (!pv->pv_started) 708 goto nofit; 709 /* 710 * If we have already started - try to get use of the disk. 711 * Try to replace OFFLINE disks first, then FAILED. 712 */ 713 promise_meta_unused_range(pd->pd_meta, pd->pd_subdisks, 714 disk->d_consumer->provider->mediasize / 715 disk->d_consumer->provider->sectorsize, 716 &eoff, &esize); 717 if (esize == 0) { 718 G_RAID_DEBUG1(1, sc, "No free space on disk %s", 719 g_raid_get_diskname(disk)); 720 goto nofit; 721 } 722 size = INT64_MAX; 723 for (i = 0; i < vol->v_disks_count; i++) { 724 sd = &vol->v_subdisks[i]; 725 if (sd->sd_state != G_RAID_SUBDISK_S_NONE) 726 size = sd->sd_size; 727 if (sd->sd_state <= G_RAID_SUBDISK_S_FAILED && 728 (disk_pos < 0 || 729 vol->v_subdisks[i].sd_state < sd->sd_state)) 730 disk_pos = i; 731 } 732 if (disk_pos >= 0 && 733 vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT && 734 (off_t)esize * 512 < size) { 735 G_RAID_DEBUG1(1, sc, "Disk %s free space " 736 "is too small (%ju < %ju)", 737 g_raid_get_diskname(disk), 738 (off_t)esize * 512, size); 739 disk_pos = -1; 740 } 741 if (disk_pos >= 0) { 742 if (vol->v_raid_level != G_RAID_VOLUME_RL_CONCAT) 743 esize = size / 512; 744 /* For RAID0+1 we need to translate order. */ 745 md_disk_pos = promise_meta_translate_disk(vol, disk_pos); 746 } else { 747 nofit: 748 if (pd->pd_subdisks == 0) { 749 g_raid_change_disk_state(disk, 750 G_RAID_DISK_S_SPARE); 751 } 752 return (0); 753 } 754 G_RAID_DEBUG1(1, sc, "Disk %s takes pos %d in the volume %s", 755 g_raid_get_diskname(disk), disk_pos, vol->v_name); 756 resurrection = 1; 757 } 758 759 sd = &vol->v_subdisks[disk_pos]; 760 761 if (resurrection && sd->sd_disk != NULL) { 762 g_raid_change_disk_state(sd->sd_disk, 763 G_RAID_DISK_S_STALE_FAILED); 764 TAILQ_REMOVE(&sd->sd_disk->d_subdisks, 765 sd, sd_next); 766 } 767 vol->v_subdisks[disk_pos].sd_disk = disk; 768 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 769 770 /* Welcome the new disk. */ 771 if (resurrection) 772 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 773 else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) 774 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED); 775 else 776 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 777 778 if (resurrection) { 779 sd->sd_offset = (off_t)eoff * 512; 780 sd->sd_size = (off_t)esize * 512; 781 } else { 782 sd->sd_offset = (((off_t)pd->pd_meta[sdn]->disk_offset_high 783 << 32) + pd->pd_meta[sdn]->disk_offset) * 512; 784 sd->sd_size = (((off_t)pd->pd_meta[sdn]->disk_sectors_high 785 << 32) + pd->pd_meta[sdn]->disk_sectors) * 512; 786 } 787 788 if (resurrection) { 789 /* Stale disk, almost same as new. */ 790 g_raid_change_subdisk_state(sd, 791 G_RAID_SUBDISK_S_NEW); 792 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_DOWN) { 793 /* Failed disk. */ 794 g_raid_change_subdisk_state(sd, 795 G_RAID_SUBDISK_S_FAILED); 796 } else if (meta->disks[md_disk_pos].flags & PROMISE_F_REDIR) { 797 /* Rebuilding disk. */ 798 g_raid_change_subdisk_state(sd, 799 G_RAID_SUBDISK_S_REBUILD); 800 if (pd->pd_meta[sdn]->generation != meta->generation) 801 sd->sd_rebuild_pos = 0; 802 else { 803 sd->sd_rebuild_pos = 804 (((off_t)pd->pd_meta[sdn]->disk_rebuild_high << 32) + 805 pd->pd_meta[sdn]->disk_rebuild) * 512; 806 } 807 } else if (!(meta->disks[md_disk_pos].flags & PROMISE_F_ONLINE)) { 808 /* Rebuilding disk. */ 809 g_raid_change_subdisk_state(sd, 810 G_RAID_SUBDISK_S_NEW); 811 } else if (pd->pd_meta[sdn]->generation != meta->generation || 812 (meta->status & PROMISE_S_MARKED)) { 813 /* Stale disk or dirty volume (unclean shutdown). */ 814 g_raid_change_subdisk_state(sd, 815 G_RAID_SUBDISK_S_STALE); 816 } else { 817 /* Up to date disk. */ 818 g_raid_change_subdisk_state(sd, 819 G_RAID_SUBDISK_S_ACTIVE); 820 } 821 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 822 G_RAID_EVENT_SUBDISK); 823 824 return (resurrection); 825 } 826 827 static void 828 g_raid_md_promise_refill(struct g_raid_softc *sc) 829 { 830 struct g_raid_volume *vol; 831 struct g_raid_subdisk *sd; 832 struct g_raid_disk *disk; 833 struct g_raid_md_object *md; 834 struct g_raid_md_promise_perdisk *pd; 835 struct g_raid_md_promise_pervolume *pv; 836 int update, updated, i, bad; 837 838 md = sc->sc_md; 839 restart: 840 updated = 0; 841 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 842 pv = vol->v_md_data; 843 if (!pv->pv_started || vol->v_stopping) 844 continue; 845 846 /* Search for subdisk that needs replacement. */ 847 bad = 0; 848 for (i = 0; i < vol->v_disks_count; i++) { 849 sd = &vol->v_subdisks[i]; 850 if (sd->sd_state == G_RAID_SUBDISK_S_NONE || 851 sd->sd_state == G_RAID_SUBDISK_S_FAILED) 852 bad = 1; 853 } 854 if (!bad) 855 continue; 856 857 G_RAID_DEBUG1(1, sc, "Volume %s is not complete, " 858 "trying to refill.", vol->v_name); 859 860 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 861 /* Skip failed. */ 862 if (disk->d_state < G_RAID_DISK_S_SPARE) 863 continue; 864 /* Skip already used by this volume. */ 865 for (i = 0; i < vol->v_disks_count; i++) { 866 sd = &vol->v_subdisks[i]; 867 if (sd->sd_disk == disk) 868 break; 869 } 870 if (i < vol->v_disks_count) 871 continue; 872 873 /* Try to use disk if it has empty extents. */ 874 pd = disk->d_md_data; 875 if (pd->pd_subdisks < PROMISE_MAX_SUBDISKS) { 876 update = 877 g_raid_md_promise_start_disk(disk, -1, vol); 878 } else 879 update = 0; 880 if (update) { 881 updated = 1; 882 g_raid_md_write_promise(md, vol, NULL, disk); 883 break; 884 } 885 } 886 } 887 if (updated) 888 goto restart; 889 } 890 891 static void 892 g_raid_md_promise_start(struct g_raid_volume *vol) 893 { 894 struct g_raid_softc *sc; 895 struct g_raid_subdisk *sd; 896 struct g_raid_disk *disk; 897 struct g_raid_md_object *md; 898 struct g_raid_md_promise_perdisk *pd; 899 struct g_raid_md_promise_pervolume *pv; 900 struct promise_raid_conf *meta; 901 u_int i; 902 903 sc = vol->v_softc; 904 md = sc->sc_md; 905 pv = vol->v_md_data; 906 meta = pv->pv_meta; 907 908 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 909 if (meta->type == PROMISE_T_RAID0) 910 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0; 911 else if (meta->type == PROMISE_T_RAID1) { 912 if (meta->array_width == 1) 913 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1; 914 else 915 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E; 916 } else if (meta->type == PROMISE_T_RAID3) 917 vol->v_raid_level = G_RAID_VOLUME_RL_RAID3; 918 else if (meta->type == PROMISE_T_RAID5) { 919 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5; 920 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LA; 921 } else if (meta->type == PROMISE_T_SPAN) 922 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT; 923 else if (meta->type == PROMISE_T_JBOD) 924 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 925 else 926 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN; 927 vol->v_strip_size = 512 << meta->stripe_shift; //ZZZ 928 vol->v_disks_count = meta->total_disks; 929 vol->v_mediasize = (off_t)meta->total_sectors * 512; //ZZZ 930 if (meta->total_sectors_high < 256) /* If value looks sane. */ 931 vol->v_mediasize += 932 ((off_t)meta->total_sectors_high << 32) * 512; //ZZZ 933 vol->v_sectorsize = 512 * meta->sector_size; 934 for (i = 0; i < vol->v_disks_count; i++) { 935 sd = &vol->v_subdisks[i]; 936 sd->sd_offset = (((off_t)meta->disk_offset_high << 32) + 937 meta->disk_offset) * 512; 938 sd->sd_size = (((off_t)meta->disk_sectors_high << 32) + 939 meta->disk_sectors) * 512; 940 } 941 g_raid_start_volume(vol); 942 943 /* Make all disks found till the moment take their places. */ 944 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 945 pd = disk->d_md_data; 946 for (i = 0; i < pd->pd_subdisks; i++) { 947 if (pd->pd_meta[i]->volume_id == meta->volume_id) 948 g_raid_md_promise_start_disk(disk, i, vol); 949 } 950 } 951 952 pv->pv_started = 1; 953 callout_stop(&pv->pv_start_co); 954 G_RAID_DEBUG1(0, sc, "Volume started."); 955 g_raid_md_write_promise(md, vol, NULL, NULL); 956 957 /* Pickup any STALE/SPARE disks to refill array if needed. */ 958 g_raid_md_promise_refill(sc); 959 960 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME); 961 } 962 963 static void 964 g_raid_promise_go(void *arg) 965 { 966 struct g_raid_volume *vol; 967 struct g_raid_softc *sc; 968 struct g_raid_md_promise_pervolume *pv; 969 970 vol = arg; 971 pv = vol->v_md_data; 972 sc = vol->v_softc; 973 if (!pv->pv_started) { 974 G_RAID_DEBUG1(0, sc, "Force volume start due to timeout."); 975 g_raid_event_send(vol, G_RAID_VOLUME_E_STARTMD, 976 G_RAID_EVENT_VOLUME); 977 } 978 } 979 980 static void 981 g_raid_md_promise_new_disk(struct g_raid_disk *disk) 982 { 983 struct g_raid_softc *sc; 984 struct g_raid_md_object *md; 985 struct promise_raid_conf *pdmeta; 986 struct g_raid_md_promise_perdisk *pd; 987 struct g_raid_md_promise_pervolume *pv; 988 struct g_raid_volume *vol; 989 int i; 990 char buf[33]; 991 992 sc = disk->d_softc; 993 md = sc->sc_md; 994 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 995 996 if (pd->pd_subdisks == 0) { 997 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE); 998 g_raid_md_promise_refill(sc); 999 return; 1000 } 1001 1002 for (i = 0; i < pd->pd_subdisks; i++) { 1003 pdmeta = pd->pd_meta[i]; 1004 1005 /* Look for volume with matching ID. */ 1006 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id); 1007 if (vol == NULL) { 1008 promise_meta_get_name(pdmeta, buf); 1009 vol = g_raid_create_volume(sc, buf, pdmeta->array_number); 1010 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO); 1011 pv->pv_id = pdmeta->volume_id; 1012 vol->v_md_data = pv; 1013 callout_init(&pv->pv_start_co, 1); 1014 callout_reset(&pv->pv_start_co, 1015 g_raid_start_timeout * hz, 1016 g_raid_promise_go, vol); 1017 } else 1018 pv = vol->v_md_data; 1019 1020 /* If we haven't started yet - check metadata freshness. */ 1021 if (pv->pv_meta == NULL || !pv->pv_started) { 1022 if (pv->pv_meta == NULL || 1023 ((int16_t)(pdmeta->generation - pv->pv_generation)) > 0) { 1024 G_RAID_DEBUG1(1, sc, "Newer disk"); 1025 if (pv->pv_meta != NULL) 1026 free(pv->pv_meta, M_MD_PROMISE); 1027 pv->pv_meta = promise_meta_copy(pdmeta); 1028 pv->pv_generation = pv->pv_meta->generation; 1029 pv->pv_disks_present = 1; 1030 } else if (pdmeta->generation == pv->pv_generation) { 1031 pv->pv_disks_present++; 1032 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)", 1033 pv->pv_disks_present, 1034 pv->pv_meta->total_disks); 1035 } else { 1036 G_RAID_DEBUG1(1, sc, "Older disk"); 1037 } 1038 } 1039 } 1040 1041 for (i = 0; i < pd->pd_subdisks; i++) { 1042 pdmeta = pd->pd_meta[i]; 1043 1044 /* Look for volume with matching ID. */ 1045 vol = g_raid_md_promise_get_volume(sc, pdmeta->volume_id); 1046 if (vol == NULL) 1047 continue; 1048 pv = vol->v_md_data; 1049 1050 if (pv->pv_started) { 1051 if (g_raid_md_promise_start_disk(disk, i, vol)) 1052 g_raid_md_write_promise(md, vol, NULL, NULL); 1053 } else { 1054 /* If we collected all needed disks - start array. */ 1055 if (pv->pv_disks_present == pv->pv_meta->total_disks) 1056 g_raid_md_promise_start(vol); 1057 } 1058 } 1059 } 1060 1061 static int 1062 g_raid_md_create_promise(struct g_raid_md_object *md, struct g_class *mp, 1063 struct g_geom **gp) 1064 { 1065 struct g_geom *geom; 1066 struct g_raid_softc *sc; 1067 1068 /* Search for existing node. */ 1069 LIST_FOREACH(geom, &mp->geom, geom) { 1070 sc = geom->softc; 1071 if (sc == NULL) 1072 continue; 1073 if (sc->sc_stopping != 0) 1074 continue; 1075 if (sc->sc_md->mdo_class != md->mdo_class) 1076 continue; 1077 break; 1078 } 1079 if (geom != NULL) { 1080 *gp = geom; 1081 return (G_RAID_MD_TASTE_EXISTING); 1082 } 1083 1084 /* Create new one if not found. */ 1085 sc = g_raid_create_node(mp, "Promise", md); 1086 if (sc == NULL) 1087 return (G_RAID_MD_TASTE_FAIL); 1088 md->mdo_softc = sc; 1089 *gp = sc->sc_geom; 1090 return (G_RAID_MD_TASTE_NEW); 1091 } 1092 1093 static int 1094 g_raid_md_taste_promise(struct g_raid_md_object *md, struct g_class *mp, 1095 struct g_consumer *cp, struct g_geom **gp) 1096 { 1097 struct g_consumer *rcp; 1098 struct g_provider *pp; 1099 struct g_raid_softc *sc; 1100 struct g_raid_disk *disk; 1101 struct promise_raid_conf *meta, *metaarr[4]; 1102 struct g_raid_md_promise_perdisk *pd; 1103 struct g_geom *geom; 1104 int i, j, result, len, subdisks; 1105 char name[16]; 1106 uint16_t vendor; 1107 1108 G_RAID_DEBUG(1, "Tasting Promise on %s", cp->provider->name); 1109 pp = cp->provider; 1110 1111 /* Read metadata from device. */ 1112 meta = NULL; 1113 g_topology_unlock(); 1114 vendor = 0xffff; 1115 len = sizeof(vendor); 1116 if (pp->geom->rank == 1) 1117 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor); 1118 subdisks = promise_meta_read(cp, metaarr); 1119 g_topology_lock(); 1120 if (subdisks == 0) { 1121 if (g_raid_aggressive_spare) { 1122 if (vendor == 0x105a || vendor == 0x1002) { 1123 G_RAID_DEBUG(1, 1124 "No Promise metadata, forcing spare."); 1125 goto search; 1126 } else { 1127 G_RAID_DEBUG(1, 1128 "Promise/ATI vendor mismatch " 1129 "0x%04x != 0x105a/0x1002", 1130 vendor); 1131 } 1132 } 1133 return (G_RAID_MD_TASTE_FAIL); 1134 } 1135 1136 /* Metadata valid. Print it. */ 1137 for (i = 0; i < subdisks; i++) 1138 g_raid_md_promise_print(metaarr[i]); 1139 1140 /* Purge meaningless (empty/spare) records. */ 1141 for (i = 0; i < subdisks; ) { 1142 if (metaarr[i]->disk.flags & PROMISE_F_ASSIGNED) { 1143 i++; 1144 continue; 1145 } 1146 free(metaarr[i], M_MD_PROMISE); 1147 for (j = i; j < subdisks - 1; j++) 1148 metaarr[i] = metaarr[j + 1]; 1149 metaarr[subdisks - 1] = NULL; 1150 subdisks--; 1151 } 1152 1153 search: 1154 /* Search for matching node. */ 1155 sc = NULL; 1156 LIST_FOREACH(geom, &mp->geom, geom) { 1157 sc = geom->softc; 1158 if (sc == NULL) 1159 continue; 1160 if (sc->sc_stopping != 0) 1161 continue; 1162 if (sc->sc_md->mdo_class != md->mdo_class) 1163 continue; 1164 break; 1165 } 1166 1167 /* Found matching node. */ 1168 if (geom != NULL) { 1169 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name); 1170 result = G_RAID_MD_TASTE_EXISTING; 1171 1172 } else { /* Not found matching node -- create one. */ 1173 result = G_RAID_MD_TASTE_NEW; 1174 snprintf(name, sizeof(name), "Promise"); 1175 sc = g_raid_create_node(mp, name, md); 1176 md->mdo_softc = sc; 1177 geom = sc->sc_geom; 1178 } 1179 1180 /* There is no return after this point, so we close passed consumer. */ 1181 g_access(cp, -1, 0, 0); 1182 1183 rcp = g_new_consumer(geom); 1184 rcp->flags |= G_CF_DIRECT_RECEIVE; 1185 g_attach(rcp, pp); 1186 if (g_access(rcp, 1, 1, 1) != 0) 1187 ; //goto fail1; 1188 1189 g_topology_unlock(); 1190 sx_xlock(&sc->sc_lock); 1191 1192 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1193 pd->pd_subdisks = subdisks; 1194 for (i = 0; i < subdisks; i++) 1195 pd->pd_meta[i] = metaarr[i]; 1196 disk = g_raid_create_disk(sc); 1197 disk->d_md_data = (void *)pd; 1198 disk->d_consumer = rcp; 1199 rcp->private = disk; 1200 1201 g_raid_get_disk_info(disk); 1202 1203 g_raid_md_promise_new_disk(disk); 1204 1205 sx_xunlock(&sc->sc_lock); 1206 g_topology_lock(); 1207 *gp = geom; 1208 return (result); 1209 } 1210 1211 static int 1212 g_raid_md_event_promise(struct g_raid_md_object *md, 1213 struct g_raid_disk *disk, u_int event) 1214 { 1215 struct g_raid_softc *sc; 1216 1217 sc = md->mdo_softc; 1218 if (disk == NULL) 1219 return (-1); 1220 switch (event) { 1221 case G_RAID_DISK_E_DISCONNECTED: 1222 /* Delete disk. */ 1223 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1224 g_raid_destroy_disk(disk); 1225 g_raid_md_promise_purge_volumes(sc); 1226 1227 /* Write updated metadata to all disks. */ 1228 g_raid_md_write_promise(md, NULL, NULL, NULL); 1229 1230 /* Check if anything left. */ 1231 if (g_raid_ndisks(sc, -1) == 0) 1232 g_raid_destroy_node(sc, 0); 1233 else 1234 g_raid_md_promise_refill(sc); 1235 return (0); 1236 } 1237 return (-2); 1238 } 1239 1240 static int 1241 g_raid_md_volume_event_promise(struct g_raid_md_object *md, 1242 struct g_raid_volume *vol, u_int event) 1243 { 1244 struct g_raid_md_promise_pervolume *pv; 1245 1246 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1247 switch (event) { 1248 case G_RAID_VOLUME_E_STARTMD: 1249 if (!pv->pv_started) 1250 g_raid_md_promise_start(vol); 1251 return (0); 1252 } 1253 return (-2); 1254 } 1255 1256 static int 1257 g_raid_md_ctl_promise(struct g_raid_md_object *md, 1258 struct gctl_req *req) 1259 { 1260 struct g_raid_softc *sc; 1261 struct g_raid_volume *vol, *vol1; 1262 struct g_raid_subdisk *sd; 1263 struct g_raid_disk *disk, *disks[PROMISE_MAX_DISKS]; 1264 struct g_raid_md_promise_perdisk *pd; 1265 struct g_raid_md_promise_pervolume *pv; 1266 struct g_consumer *cp; 1267 struct g_provider *pp; 1268 char arg[16]; 1269 const char *nodename, *verb, *volname, *levelname, *diskname; 1270 char *tmp; 1271 int *nargs, *force; 1272 off_t esize, offs[PROMISE_MAX_DISKS], size, sectorsize, strip; 1273 intmax_t *sizearg, *striparg; 1274 int numdisks, i, len, level, qual; 1275 int error; 1276 1277 sc = md->mdo_softc; 1278 verb = gctl_get_param(req, "verb", NULL); 1279 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 1280 error = 0; 1281 if (strcmp(verb, "label") == 0) { 1282 1283 if (*nargs < 4) { 1284 gctl_error(req, "Invalid number of arguments."); 1285 return (-1); 1286 } 1287 volname = gctl_get_asciiparam(req, "arg1"); 1288 if (volname == NULL) { 1289 gctl_error(req, "No volume name."); 1290 return (-2); 1291 } 1292 levelname = gctl_get_asciiparam(req, "arg2"); 1293 if (levelname == NULL) { 1294 gctl_error(req, "No RAID level."); 1295 return (-3); 1296 } 1297 if (strcasecmp(levelname, "RAID5") == 0) 1298 levelname = "RAID5-LA"; 1299 if (g_raid_volume_str2level(levelname, &level, &qual)) { 1300 gctl_error(req, "Unknown RAID level '%s'.", levelname); 1301 return (-4); 1302 } 1303 numdisks = *nargs - 3; 1304 force = gctl_get_paraml(req, "force", sizeof(*force)); 1305 if (!g_raid_md_promise_supported(level, qual, numdisks, 1306 force ? *force : 0)) { 1307 gctl_error(req, "Unsupported RAID level " 1308 "(0x%02x/0x%02x), or number of disks (%d).", 1309 level, qual, numdisks); 1310 return (-5); 1311 } 1312 1313 /* Search for disks, connect them and probe. */ 1314 size = INT64_MAX; 1315 sectorsize = 0; 1316 bzero(disks, sizeof(disks)); 1317 bzero(offs, sizeof(offs)); 1318 for (i = 0; i < numdisks; i++) { 1319 snprintf(arg, sizeof(arg), "arg%d", i + 3); 1320 diskname = gctl_get_asciiparam(req, arg); 1321 if (diskname == NULL) { 1322 gctl_error(req, "No disk name (%s).", arg); 1323 error = -6; 1324 break; 1325 } 1326 if (strcmp(diskname, "NONE") == 0) 1327 continue; 1328 1329 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1330 if (disk->d_consumer != NULL && 1331 disk->d_consumer->provider != NULL && 1332 strcmp(disk->d_consumer->provider->name, 1333 diskname) == 0) 1334 break; 1335 } 1336 if (disk != NULL) { 1337 if (disk->d_state != G_RAID_DISK_S_ACTIVE) { 1338 gctl_error(req, "Disk '%s' is in a " 1339 "wrong state (%s).", diskname, 1340 g_raid_disk_state2str(disk->d_state)); 1341 error = -7; 1342 break; 1343 } 1344 pd = disk->d_md_data; 1345 if (pd->pd_subdisks >= PROMISE_MAX_SUBDISKS) { 1346 gctl_error(req, "Disk '%s' already " 1347 "used by %d volumes.", 1348 diskname, pd->pd_subdisks); 1349 error = -7; 1350 break; 1351 } 1352 pp = disk->d_consumer->provider; 1353 disks[i] = disk; 1354 promise_meta_unused_range(pd->pd_meta, 1355 pd->pd_subdisks, 1356 pp->mediasize / pp->sectorsize, 1357 &offs[i], &esize); 1358 size = MIN(size, (off_t)esize * pp->sectorsize); 1359 sectorsize = MAX(sectorsize, pp->sectorsize); 1360 continue; 1361 } 1362 1363 g_topology_lock(); 1364 cp = g_raid_open_consumer(sc, diskname); 1365 if (cp == NULL) { 1366 gctl_error(req, "Can't open disk '%s'.", 1367 diskname); 1368 g_topology_unlock(); 1369 error = -8; 1370 break; 1371 } 1372 pp = cp->provider; 1373 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1374 disk = g_raid_create_disk(sc); 1375 disk->d_md_data = (void *)pd; 1376 disk->d_consumer = cp; 1377 disks[i] = disk; 1378 cp->private = disk; 1379 g_topology_unlock(); 1380 1381 g_raid_get_disk_info(disk); 1382 1383 /* Reserve some space for metadata. */ 1384 size = MIN(size, pp->mediasize - 131072llu * pp->sectorsize); 1385 sectorsize = MAX(sectorsize, pp->sectorsize); 1386 } 1387 if (error != 0) { 1388 for (i = 0; i < numdisks; i++) { 1389 if (disks[i] != NULL && 1390 disks[i]->d_state == G_RAID_DISK_S_NONE) 1391 g_raid_destroy_disk(disks[i]); 1392 } 1393 return (error); 1394 } 1395 1396 if (sectorsize <= 0) { 1397 gctl_error(req, "Can't get sector size."); 1398 return (-8); 1399 } 1400 1401 /* Handle size argument. */ 1402 len = sizeof(*sizearg); 1403 sizearg = gctl_get_param(req, "size", &len); 1404 if (sizearg != NULL && len == sizeof(*sizearg) && 1405 *sizearg > 0) { 1406 if (*sizearg > size) { 1407 gctl_error(req, "Size too big %lld > %lld.", 1408 (long long)*sizearg, (long long)size); 1409 return (-9); 1410 } 1411 size = *sizearg; 1412 } 1413 1414 /* Handle strip argument. */ 1415 strip = 131072; 1416 len = sizeof(*striparg); 1417 striparg = gctl_get_param(req, "strip", &len); 1418 if (striparg != NULL && len == sizeof(*striparg) && 1419 *striparg > 0) { 1420 if (*striparg < sectorsize) { 1421 gctl_error(req, "Strip size too small."); 1422 return (-10); 1423 } 1424 if (*striparg % sectorsize != 0) { 1425 gctl_error(req, "Incorrect strip size."); 1426 return (-11); 1427 } 1428 strip = *striparg; 1429 } 1430 1431 /* Round size down to strip or sector. */ 1432 if (level == G_RAID_VOLUME_RL_RAID1 || 1433 level == G_RAID_VOLUME_RL_SINGLE || 1434 level == G_RAID_VOLUME_RL_CONCAT) 1435 size -= (size % sectorsize); 1436 else if (level == G_RAID_VOLUME_RL_RAID1E && 1437 (numdisks & 1) != 0) 1438 size -= (size % (2 * strip)); 1439 else 1440 size -= (size % strip); 1441 if (size <= 0) { 1442 gctl_error(req, "Size too small."); 1443 return (-13); 1444 } 1445 1446 /* We have all we need, create things: volume, ... */ 1447 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO); 1448 arc4rand(&pv->pv_id, sizeof(pv->pv_id), 0); 1449 pv->pv_generation = 0; 1450 pv->pv_started = 1; 1451 vol = g_raid_create_volume(sc, volname, -1); 1452 vol->v_md_data = pv; 1453 vol->v_raid_level = level; 1454 vol->v_raid_level_qualifier = qual; 1455 vol->v_strip_size = strip; 1456 vol->v_disks_count = numdisks; 1457 if (level == G_RAID_VOLUME_RL_RAID0 || 1458 level == G_RAID_VOLUME_RL_CONCAT || 1459 level == G_RAID_VOLUME_RL_SINGLE) 1460 vol->v_mediasize = size * numdisks; 1461 else if (level == G_RAID_VOLUME_RL_RAID1) 1462 vol->v_mediasize = size; 1463 else if (level == G_RAID_VOLUME_RL_RAID3 || 1464 level == G_RAID_VOLUME_RL_RAID5) 1465 vol->v_mediasize = size * (numdisks - 1); 1466 else { /* RAID1E */ 1467 vol->v_mediasize = ((size * numdisks) / strip / 2) * 1468 strip; 1469 } 1470 vol->v_sectorsize = sectorsize; 1471 g_raid_start_volume(vol); 1472 1473 /* , and subdisks. */ 1474 for (i = 0; i < numdisks; i++) { 1475 disk = disks[i]; 1476 sd = &vol->v_subdisks[i]; 1477 sd->sd_disk = disk; 1478 sd->sd_offset = (off_t)offs[i] * 512; 1479 sd->sd_size = size; 1480 if (disk == NULL) 1481 continue; 1482 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 1483 g_raid_change_disk_state(disk, 1484 G_RAID_DISK_S_ACTIVE); 1485 g_raid_change_subdisk_state(sd, 1486 G_RAID_SUBDISK_S_ACTIVE); 1487 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 1488 G_RAID_EVENT_SUBDISK); 1489 } 1490 1491 /* Write metadata based on created entities. */ 1492 G_RAID_DEBUG1(0, sc, "Array started."); 1493 g_raid_md_write_promise(md, vol, NULL, NULL); 1494 1495 /* Pickup any STALE/SPARE disks to refill array if needed. */ 1496 g_raid_md_promise_refill(sc); 1497 1498 g_raid_event_send(vol, G_RAID_VOLUME_E_START, 1499 G_RAID_EVENT_VOLUME); 1500 return (0); 1501 } 1502 if (strcmp(verb, "add") == 0) { 1503 1504 gctl_error(req, "`add` command is not applicable, " 1505 "use `label` instead."); 1506 return (-99); 1507 } 1508 if (strcmp(verb, "delete") == 0) { 1509 1510 nodename = gctl_get_asciiparam(req, "arg0"); 1511 if (nodename != NULL && strcasecmp(sc->sc_name, nodename) != 0) 1512 nodename = NULL; 1513 1514 /* Full node destruction. */ 1515 if (*nargs == 1 && nodename != NULL) { 1516 /* Check if some volume is still open. */ 1517 force = gctl_get_paraml(req, "force", sizeof(*force)); 1518 if (force != NULL && *force == 0 && 1519 g_raid_nopens(sc) != 0) { 1520 gctl_error(req, "Some volume is still open."); 1521 return (-4); 1522 } 1523 1524 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1525 if (disk->d_consumer) 1526 promise_meta_erase(disk->d_consumer); 1527 } 1528 g_raid_destroy_node(sc, 0); 1529 return (0); 1530 } 1531 1532 /* Destroy specified volume. If it was last - all node. */ 1533 if (*nargs > 2) { 1534 gctl_error(req, "Invalid number of arguments."); 1535 return (-1); 1536 } 1537 volname = gctl_get_asciiparam(req, 1538 nodename != NULL ? "arg1" : "arg0"); 1539 if (volname == NULL) { 1540 gctl_error(req, "No volume name."); 1541 return (-2); 1542 } 1543 1544 /* Search for volume. */ 1545 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1546 if (strcmp(vol->v_name, volname) == 0) 1547 break; 1548 pp = vol->v_provider; 1549 if (pp == NULL) 1550 continue; 1551 if (strcmp(pp->name, volname) == 0) 1552 break; 1553 if (strncmp(pp->name, "raid/", 5) == 0 && 1554 strcmp(pp->name + 5, volname) == 0) 1555 break; 1556 } 1557 if (vol == NULL) { 1558 i = strtol(volname, &tmp, 10); 1559 if (verb != volname && tmp[0] == 0) { 1560 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1561 if (vol->v_global_id == i) 1562 break; 1563 } 1564 } 1565 } 1566 if (vol == NULL) { 1567 gctl_error(req, "Volume '%s' not found.", volname); 1568 return (-3); 1569 } 1570 1571 /* Check if volume is still open. */ 1572 force = gctl_get_paraml(req, "force", sizeof(*force)); 1573 if (force != NULL && *force == 0 && 1574 vol->v_provider_open != 0) { 1575 gctl_error(req, "Volume is still open."); 1576 return (-4); 1577 } 1578 1579 /* Destroy volume and potentially node. */ 1580 i = 0; 1581 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next) 1582 i++; 1583 if (i >= 2) { 1584 g_raid_destroy_volume(vol); 1585 g_raid_md_promise_purge_disks(sc); 1586 g_raid_md_write_promise(md, NULL, NULL, NULL); 1587 } else { 1588 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1589 if (disk->d_consumer) 1590 promise_meta_erase(disk->d_consumer); 1591 } 1592 g_raid_destroy_node(sc, 0); 1593 } 1594 return (0); 1595 } 1596 if (strcmp(verb, "remove") == 0 || 1597 strcmp(verb, "fail") == 0) { 1598 if (*nargs < 2) { 1599 gctl_error(req, "Invalid number of arguments."); 1600 return (-1); 1601 } 1602 for (i = 1; i < *nargs; i++) { 1603 snprintf(arg, sizeof(arg), "arg%d", i); 1604 diskname = gctl_get_asciiparam(req, arg); 1605 if (diskname == NULL) { 1606 gctl_error(req, "No disk name (%s).", arg); 1607 error = -2; 1608 break; 1609 } 1610 if (strncmp(diskname, "/dev/", 5) == 0) 1611 diskname += 5; 1612 1613 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1614 if (disk->d_consumer != NULL && 1615 disk->d_consumer->provider != NULL && 1616 strcmp(disk->d_consumer->provider->name, 1617 diskname) == 0) 1618 break; 1619 } 1620 if (disk == NULL) { 1621 gctl_error(req, "Disk '%s' not found.", 1622 diskname); 1623 error = -3; 1624 break; 1625 } 1626 1627 if (strcmp(verb, "fail") == 0) { 1628 g_raid_md_fail_disk_promise(md, NULL, disk); 1629 continue; 1630 } 1631 1632 /* Erase metadata on deleting disk and destroy it. */ 1633 promise_meta_erase(disk->d_consumer); 1634 g_raid_destroy_disk(disk); 1635 } 1636 g_raid_md_promise_purge_volumes(sc); 1637 1638 /* Write updated metadata to remaining disks. */ 1639 g_raid_md_write_promise(md, NULL, NULL, NULL); 1640 1641 /* Check if anything left. */ 1642 if (g_raid_ndisks(sc, -1) == 0) 1643 g_raid_destroy_node(sc, 0); 1644 else 1645 g_raid_md_promise_refill(sc); 1646 return (error); 1647 } 1648 if (strcmp(verb, "insert") == 0) { 1649 if (*nargs < 2) { 1650 gctl_error(req, "Invalid number of arguments."); 1651 return (-1); 1652 } 1653 for (i = 1; i < *nargs; i++) { 1654 /* Get disk name. */ 1655 snprintf(arg, sizeof(arg), "arg%d", i); 1656 diskname = gctl_get_asciiparam(req, arg); 1657 if (diskname == NULL) { 1658 gctl_error(req, "No disk name (%s).", arg); 1659 error = -3; 1660 break; 1661 } 1662 1663 /* Try to find provider with specified name. */ 1664 g_topology_lock(); 1665 cp = g_raid_open_consumer(sc, diskname); 1666 if (cp == NULL) { 1667 gctl_error(req, "Can't open disk '%s'.", 1668 diskname); 1669 g_topology_unlock(); 1670 error = -4; 1671 break; 1672 } 1673 pp = cp->provider; 1674 g_topology_unlock(); 1675 1676 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1677 1678 disk = g_raid_create_disk(sc); 1679 disk->d_consumer = cp; 1680 disk->d_md_data = (void *)pd; 1681 cp->private = disk; 1682 1683 g_raid_get_disk_info(disk); 1684 1685 /* Welcome the "new" disk. */ 1686 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE); 1687 promise_meta_write_spare(cp); 1688 g_raid_md_promise_refill(sc); 1689 } 1690 return (error); 1691 } 1692 return (-100); 1693 } 1694 1695 static int 1696 g_raid_md_write_promise(struct g_raid_md_object *md, struct g_raid_volume *tvol, 1697 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1698 { 1699 struct g_raid_softc *sc; 1700 struct g_raid_volume *vol; 1701 struct g_raid_subdisk *sd; 1702 struct g_raid_disk *disk; 1703 struct g_raid_md_promise_perdisk *pd; 1704 struct g_raid_md_promise_pervolume *pv; 1705 struct promise_raid_conf *meta; 1706 off_t rebuild_lba64; 1707 int i, j, pos, rebuild; 1708 1709 sc = md->mdo_softc; 1710 1711 if (sc->sc_stopping == G_RAID_DESTROY_HARD) 1712 return (0); 1713 1714 /* Generate new per-volume metadata for affected volumes. */ 1715 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1716 if (vol->v_stopping) 1717 continue; 1718 1719 /* Skip volumes not related to specified targets. */ 1720 if (tvol != NULL && vol != tvol) 1721 continue; 1722 if (tsd != NULL && vol != tsd->sd_volume) 1723 continue; 1724 if (tdisk != NULL) { 1725 for (i = 0; i < vol->v_disks_count; i++) { 1726 if (vol->v_subdisks[i].sd_disk == tdisk) 1727 break; 1728 } 1729 if (i >= vol->v_disks_count) 1730 continue; 1731 } 1732 1733 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1734 pv->pv_generation++; 1735 1736 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO); 1737 if (pv->pv_meta != NULL) 1738 memcpy(meta, pv->pv_meta, sizeof(*meta)); 1739 memcpy(meta->promise_id, PROMISE_MAGIC, 1740 sizeof(PROMISE_MAGIC) - 1); 1741 meta->dummy_0 = 0x00020000; 1742 meta->integrity = PROMISE_I_VALID; 1743 1744 meta->generation = pv->pv_generation; 1745 meta->status = PROMISE_S_VALID | PROMISE_S_ONLINE | 1746 PROMISE_S_INITED | PROMISE_S_READY; 1747 if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED) 1748 meta->status |= PROMISE_S_DEGRADED; 1749 if (vol->v_dirty) 1750 meta->status |= PROMISE_S_MARKED; /* XXX: INVENTED! */ 1751 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0 || 1752 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) 1753 meta->type = PROMISE_T_RAID0; 1754 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1755 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) 1756 meta->type = PROMISE_T_RAID1; 1757 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3) 1758 meta->type = PROMISE_T_RAID3; 1759 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) 1760 meta->type = PROMISE_T_RAID5; 1761 else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT) 1762 meta->type = PROMISE_T_SPAN; 1763 else 1764 meta->type = PROMISE_T_JBOD; 1765 meta->total_disks = vol->v_disks_count; 1766 meta->stripe_shift = ffs(vol->v_strip_size / 1024); 1767 meta->array_width = vol->v_disks_count; 1768 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1769 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) 1770 meta->array_width /= 2; 1771 meta->array_number = vol->v_global_id; 1772 meta->total_sectors = vol->v_mediasize / 512; 1773 meta->total_sectors_high = (vol->v_mediasize / 512) >> 32; 1774 meta->sector_size = vol->v_sectorsize / 512; 1775 meta->cylinders = meta->total_sectors / (255 * 63) - 1; 1776 meta->heads = 254; 1777 meta->sectors = 63; 1778 meta->volume_id = pv->pv_id; 1779 rebuild_lba64 = UINT64_MAX; 1780 rebuild = 0; 1781 for (i = 0; i < vol->v_disks_count; i++) { 1782 sd = &vol->v_subdisks[i]; 1783 /* For RAID0+1 we need to translate order. */ 1784 pos = promise_meta_translate_disk(vol, i); 1785 meta->disks[pos].flags = PROMISE_F_VALID | 1786 PROMISE_F_ASSIGNED; 1787 if (sd->sd_state == G_RAID_SUBDISK_S_NONE) { 1788 meta->disks[pos].flags |= 0; 1789 } else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED) { 1790 meta->disks[pos].flags |= 1791 PROMISE_F_DOWN | PROMISE_F_REDIR; 1792 } else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD) { 1793 meta->disks[pos].flags |= 1794 PROMISE_F_ONLINE | PROMISE_F_REDIR; 1795 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) { 1796 rebuild_lba64 = MIN(rebuild_lba64, 1797 sd->sd_rebuild_pos / 512); 1798 } else 1799 rebuild_lba64 = 0; 1800 rebuild = 1; 1801 } else { 1802 meta->disks[pos].flags |= PROMISE_F_ONLINE; 1803 if (sd->sd_state < G_RAID_SUBDISK_S_ACTIVE) { 1804 meta->status |= PROMISE_S_MARKED; 1805 if (sd->sd_state == G_RAID_SUBDISK_S_RESYNC) { 1806 rebuild_lba64 = MIN(rebuild_lba64, 1807 sd->sd_rebuild_pos / 512); 1808 } else 1809 rebuild_lba64 = 0; 1810 } 1811 } 1812 if (pv->pv_meta != NULL) { 1813 meta->disks[pos].id = pv->pv_meta->disks[pos].id; 1814 } else { 1815 meta->disks[pos].number = i * 2; 1816 arc4rand(&meta->disks[pos].id, 1817 sizeof(meta->disks[pos].id), 0); 1818 } 1819 } 1820 promise_meta_put_name(meta, vol->v_name); 1821 1822 /* Try to mimic AMD BIOS rebuild/resync behavior. */ 1823 if (rebuild_lba64 != UINT64_MAX) { 1824 if (rebuild) 1825 meta->magic_3 = 0x03040010UL; /* Rebuild? */ 1826 else 1827 meta->magic_3 = 0x03040008UL; /* Resync? */ 1828 /* Translate from per-disk to per-volume LBA. */ 1829 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1830 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1831 rebuild_lba64 *= meta->array_width; 1832 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3 || 1833 vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) { 1834 rebuild_lba64 *= meta->array_width - 1; 1835 } else 1836 rebuild_lba64 = 0; 1837 } else 1838 meta->magic_3 = 0x03000000UL; 1839 meta->rebuild_lba64 = rebuild_lba64; 1840 meta->magic_4 = 0x04010101UL; 1841 1842 /* Replace per-volume metadata with new. */ 1843 if (pv->pv_meta != NULL) 1844 free(pv->pv_meta, M_MD_PROMISE); 1845 pv->pv_meta = meta; 1846 1847 /* Copy new metadata to the disks, adding or replacing old. */ 1848 for (i = 0; i < vol->v_disks_count; i++) { 1849 sd = &vol->v_subdisks[i]; 1850 disk = sd->sd_disk; 1851 if (disk == NULL) 1852 continue; 1853 /* For RAID0+1 we need to translate order. */ 1854 pos = promise_meta_translate_disk(vol, i); 1855 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1856 for (j = 0; j < pd->pd_subdisks; j++) { 1857 if (pd->pd_meta[j]->volume_id == meta->volume_id) 1858 break; 1859 } 1860 if (j == pd->pd_subdisks) 1861 pd->pd_subdisks++; 1862 if (pd->pd_meta[j] != NULL) 1863 free(pd->pd_meta[j], M_MD_PROMISE); 1864 pd->pd_meta[j] = promise_meta_copy(meta); 1865 pd->pd_meta[j]->disk = meta->disks[pos]; 1866 pd->pd_meta[j]->disk.number = pos; 1867 pd->pd_meta[j]->disk_offset_high = 1868 (sd->sd_offset / 512) >> 32; 1869 pd->pd_meta[j]->disk_offset = sd->sd_offset / 512; 1870 pd->pd_meta[j]->disk_sectors_high = 1871 (sd->sd_size / 512) >> 32; 1872 pd->pd_meta[j]->disk_sectors = sd->sd_size / 512; 1873 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) { 1874 pd->pd_meta[j]->disk_rebuild_high = 1875 (sd->sd_rebuild_pos / 512) >> 32; 1876 pd->pd_meta[j]->disk_rebuild = 1877 sd->sd_rebuild_pos / 512; 1878 } else if (sd->sd_state < G_RAID_SUBDISK_S_REBUILD) { 1879 pd->pd_meta[j]->disk_rebuild_high = 0; 1880 pd->pd_meta[j]->disk_rebuild = 0; 1881 } else { 1882 pd->pd_meta[j]->disk_rebuild_high = UINT32_MAX; 1883 pd->pd_meta[j]->disk_rebuild = UINT32_MAX; 1884 } 1885 pd->pd_updated = 1; 1886 } 1887 } 1888 1889 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1890 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1891 if (disk->d_state != G_RAID_DISK_S_ACTIVE) 1892 continue; 1893 if (!pd->pd_updated) 1894 continue; 1895 G_RAID_DEBUG(1, "Writing Promise metadata to %s", 1896 g_raid_get_diskname(disk)); 1897 for (i = 0; i < pd->pd_subdisks; i++) 1898 g_raid_md_promise_print(pd->pd_meta[i]); 1899 promise_meta_write(disk->d_consumer, 1900 pd->pd_meta, pd->pd_subdisks); 1901 pd->pd_updated = 0; 1902 } 1903 1904 return (0); 1905 } 1906 1907 static int 1908 g_raid_md_fail_disk_promise(struct g_raid_md_object *md, 1909 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1910 { 1911 struct g_raid_softc *sc; 1912 struct g_raid_md_promise_perdisk *pd; 1913 struct g_raid_subdisk *sd; 1914 int i, pos; 1915 1916 sc = md->mdo_softc; 1917 pd = (struct g_raid_md_promise_perdisk *)tdisk->d_md_data; 1918 1919 /* We can't fail disk that is not a part of array now. */ 1920 if (tdisk->d_state != G_RAID_DISK_S_ACTIVE) 1921 return (-1); 1922 1923 /* 1924 * Mark disk as failed in metadata and try to write that metadata 1925 * to the disk itself to prevent it's later resurrection as STALE. 1926 */ 1927 if (pd->pd_subdisks > 0 && tdisk->d_consumer != NULL) 1928 G_RAID_DEBUG(1, "Writing Promise metadata to %s", 1929 g_raid_get_diskname(tdisk)); 1930 for (i = 0; i < pd->pd_subdisks; i++) { 1931 pd->pd_meta[i]->disk.flags |= 1932 PROMISE_F_DOWN | PROMISE_F_REDIR; 1933 pos = pd->pd_meta[i]->disk.number; 1934 if (pos >= 0 && pos < PROMISE_MAX_DISKS) { 1935 pd->pd_meta[i]->disks[pos].flags |= 1936 PROMISE_F_DOWN | PROMISE_F_REDIR; 1937 } 1938 g_raid_md_promise_print(pd->pd_meta[i]); 1939 } 1940 if (tdisk->d_consumer != NULL) 1941 promise_meta_write(tdisk->d_consumer, 1942 pd->pd_meta, pd->pd_subdisks); 1943 1944 /* Change states. */ 1945 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED); 1946 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) { 1947 g_raid_change_subdisk_state(sd, 1948 G_RAID_SUBDISK_S_FAILED); 1949 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED, 1950 G_RAID_EVENT_SUBDISK); 1951 } 1952 1953 /* Write updated metadata to remaining disks. */ 1954 g_raid_md_write_promise(md, NULL, NULL, tdisk); 1955 1956 g_raid_md_promise_refill(sc); 1957 return (0); 1958 } 1959 1960 static int 1961 g_raid_md_free_disk_promise(struct g_raid_md_object *md, 1962 struct g_raid_disk *disk) 1963 { 1964 struct g_raid_md_promise_perdisk *pd; 1965 int i; 1966 1967 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1968 for (i = 0; i < pd->pd_subdisks; i++) { 1969 if (pd->pd_meta[i] != NULL) { 1970 free(pd->pd_meta[i], M_MD_PROMISE); 1971 pd->pd_meta[i] = NULL; 1972 } 1973 } 1974 free(pd, M_MD_PROMISE); 1975 disk->d_md_data = NULL; 1976 return (0); 1977 } 1978 1979 static int 1980 g_raid_md_free_volume_promise(struct g_raid_md_object *md, 1981 struct g_raid_volume *vol) 1982 { 1983 struct g_raid_md_promise_pervolume *pv; 1984 1985 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1986 if (pv && pv->pv_meta != NULL) { 1987 free(pv->pv_meta, M_MD_PROMISE); 1988 pv->pv_meta = NULL; 1989 } 1990 if (pv && !pv->pv_started) { 1991 pv->pv_started = 1; 1992 callout_stop(&pv->pv_start_co); 1993 } 1994 free(pv, M_MD_PROMISE); 1995 vol->v_md_data = NULL; 1996 return (0); 1997 } 1998 1999 static int 2000 g_raid_md_free_promise(struct g_raid_md_object *md) 2001 { 2002 2003 return (0); 2004 } 2005 2006 G_RAID_MD_DECLARE(promise, "Promise"); 2007