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 next: 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 } 420 421 static int 422 promise_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; 435 next: 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 } 483 484 static int 485 promise_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 } 505 506 static int 507 promise_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 } 529 530 static struct g_raid_volume * 531 g_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 } 543 544 static int 545 g_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 } 567 568 static int 569 g_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 } 607 608 static int 609 g_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 } 656 657 static int 658 g_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 its 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 { 742 nofit: 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 } 821 822 static void 823 g_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; 834 restart: 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 } 885 886 static void 887 g_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 u_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 } 957 958 static void 959 g_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 } 974 975 static void 976 g_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 1056 static int 1057 g_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 1088 static int 1089 g_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 g_topology_unlock(); 1109 vendor = 0xffff; 1110 len = sizeof(vendor); 1111 if (pp->geom->rank == 1) 1112 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor); 1113 subdisks = promise_meta_read(cp, metaarr); 1114 g_topology_lock(); 1115 if (subdisks == 0) { 1116 if (g_raid_aggressive_spare) { 1117 if (vendor == 0x105a || vendor == 0x1002) { 1118 G_RAID_DEBUG(1, 1119 "No Promise metadata, forcing spare."); 1120 goto search; 1121 } else { 1122 G_RAID_DEBUG(1, 1123 "Promise/ATI vendor mismatch " 1124 "0x%04x != 0x105a/0x1002", 1125 vendor); 1126 } 1127 } 1128 return (G_RAID_MD_TASTE_FAIL); 1129 } 1130 1131 /* Metadata valid. Print it. */ 1132 for (i = 0; i < subdisks; i++) 1133 g_raid_md_promise_print(metaarr[i]); 1134 1135 /* Purge meaningless (empty/spare) records. */ 1136 for (i = 0; i < subdisks; ) { 1137 if (metaarr[i]->disk.flags & PROMISE_F_ASSIGNED) { 1138 i++; 1139 continue; 1140 } 1141 free(metaarr[i], M_MD_PROMISE); 1142 for (j = i; j < subdisks - 1; j++) 1143 metaarr[i] = metaarr[j + 1]; 1144 metaarr[subdisks - 1] = NULL; 1145 subdisks--; 1146 } 1147 1148 search: 1149 /* Search for matching node. */ 1150 sc = NULL; 1151 LIST_FOREACH(geom, &mp->geom, geom) { 1152 sc = geom->softc; 1153 if (sc == NULL) 1154 continue; 1155 if (sc->sc_stopping != 0) 1156 continue; 1157 if (sc->sc_md->mdo_class != md->mdo_class) 1158 continue; 1159 break; 1160 } 1161 1162 /* Found matching node. */ 1163 if (geom != NULL) { 1164 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name); 1165 result = G_RAID_MD_TASTE_EXISTING; 1166 1167 } else { /* Not found matching node -- create one. */ 1168 result = G_RAID_MD_TASTE_NEW; 1169 snprintf(name, sizeof(name), "Promise"); 1170 sc = g_raid_create_node(mp, name, md); 1171 md->mdo_softc = sc; 1172 geom = sc->sc_geom; 1173 } 1174 1175 /* There is no return after this point, so we close passed consumer. */ 1176 g_access(cp, -1, 0, 0); 1177 1178 rcp = g_new_consumer(geom); 1179 rcp->flags |= G_CF_DIRECT_RECEIVE; 1180 g_attach(rcp, pp); 1181 if (g_access(rcp, 1, 1, 1) != 0) 1182 ; //goto fail1; 1183 1184 g_topology_unlock(); 1185 sx_xlock(&sc->sc_lock); 1186 1187 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1188 pd->pd_subdisks = subdisks; 1189 for (i = 0; i < subdisks; i++) 1190 pd->pd_meta[i] = metaarr[i]; 1191 disk = g_raid_create_disk(sc); 1192 disk->d_md_data = (void *)pd; 1193 disk->d_consumer = rcp; 1194 rcp->private = disk; 1195 1196 g_raid_get_disk_info(disk); 1197 1198 g_raid_md_promise_new_disk(disk); 1199 1200 sx_xunlock(&sc->sc_lock); 1201 g_topology_lock(); 1202 *gp = geom; 1203 return (result); 1204 } 1205 1206 static int 1207 g_raid_md_event_promise(struct g_raid_md_object *md, 1208 struct g_raid_disk *disk, u_int event) 1209 { 1210 struct g_raid_softc *sc; 1211 1212 sc = md->mdo_softc; 1213 if (disk == NULL) 1214 return (-1); 1215 switch (event) { 1216 case G_RAID_DISK_E_DISCONNECTED: 1217 /* Delete disk. */ 1218 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1219 g_raid_destroy_disk(disk); 1220 g_raid_md_promise_purge_volumes(sc); 1221 1222 /* Write updated metadata to all disks. */ 1223 g_raid_md_write_promise(md, NULL, NULL, NULL); 1224 1225 /* Check if anything left. */ 1226 if (g_raid_ndisks(sc, -1) == 0) 1227 g_raid_destroy_node(sc, 0); 1228 else 1229 g_raid_md_promise_refill(sc); 1230 return (0); 1231 } 1232 return (-2); 1233 } 1234 1235 static int 1236 g_raid_md_volume_event_promise(struct g_raid_md_object *md, 1237 struct g_raid_volume *vol, u_int event) 1238 { 1239 struct g_raid_md_promise_pervolume *pv; 1240 1241 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1242 switch (event) { 1243 case G_RAID_VOLUME_E_STARTMD: 1244 if (!pv->pv_started) 1245 g_raid_md_promise_start(vol); 1246 return (0); 1247 } 1248 return (-2); 1249 } 1250 1251 static int 1252 g_raid_md_ctl_promise(struct g_raid_md_object *md, 1253 struct gctl_req *req) 1254 { 1255 struct g_raid_softc *sc; 1256 struct g_raid_volume *vol, *vol1; 1257 struct g_raid_subdisk *sd; 1258 struct g_raid_disk *disk, *disks[PROMISE_MAX_DISKS]; 1259 struct g_raid_md_promise_perdisk *pd; 1260 struct g_raid_md_promise_pervolume *pv; 1261 struct g_consumer *cp; 1262 struct g_provider *pp; 1263 char arg[16]; 1264 const char *nodename, *verb, *volname, *levelname, *diskname; 1265 char *tmp; 1266 int *nargs, *force; 1267 off_t esize, offs[PROMISE_MAX_DISKS], size, sectorsize, strip; 1268 intmax_t *sizearg, *striparg; 1269 int numdisks, i, len, level, qual; 1270 int error; 1271 1272 sc = md->mdo_softc; 1273 verb = gctl_get_param(req, "verb", NULL); 1274 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 1275 error = 0; 1276 if (strcmp(verb, "label") == 0) { 1277 1278 if (*nargs < 4) { 1279 gctl_error(req, "Invalid number of arguments."); 1280 return (-1); 1281 } 1282 volname = gctl_get_asciiparam(req, "arg1"); 1283 if (volname == NULL) { 1284 gctl_error(req, "No volume name."); 1285 return (-2); 1286 } 1287 levelname = gctl_get_asciiparam(req, "arg2"); 1288 if (levelname == NULL) { 1289 gctl_error(req, "No RAID level."); 1290 return (-3); 1291 } 1292 if (strcasecmp(levelname, "RAID5") == 0) 1293 levelname = "RAID5-LA"; 1294 if (g_raid_volume_str2level(levelname, &level, &qual)) { 1295 gctl_error(req, "Unknown RAID level '%s'.", levelname); 1296 return (-4); 1297 } 1298 numdisks = *nargs - 3; 1299 force = gctl_get_paraml(req, "force", sizeof(*force)); 1300 if (!g_raid_md_promise_supported(level, qual, numdisks, 1301 force ? *force : 0)) { 1302 gctl_error(req, "Unsupported RAID level " 1303 "(0x%02x/0x%02x), or number of disks (%d).", 1304 level, qual, numdisks); 1305 return (-5); 1306 } 1307 1308 /* Search for disks, connect them and probe. */ 1309 size = INT64_MAX; 1310 sectorsize = 0; 1311 bzero(disks, sizeof(disks)); 1312 bzero(offs, sizeof(offs)); 1313 for (i = 0; i < numdisks; i++) { 1314 snprintf(arg, sizeof(arg), "arg%d", i + 3); 1315 diskname = gctl_get_asciiparam(req, arg); 1316 if (diskname == NULL) { 1317 gctl_error(req, "No disk name (%s).", arg); 1318 error = -6; 1319 break; 1320 } 1321 if (strcmp(diskname, "NONE") == 0) 1322 continue; 1323 1324 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1325 if (disk->d_consumer != NULL && 1326 disk->d_consumer->provider != NULL && 1327 strcmp(disk->d_consumer->provider->name, 1328 diskname) == 0) 1329 break; 1330 } 1331 if (disk != NULL) { 1332 if (disk->d_state != G_RAID_DISK_S_ACTIVE) { 1333 gctl_error(req, "Disk '%s' is in a " 1334 "wrong state (%s).", diskname, 1335 g_raid_disk_state2str(disk->d_state)); 1336 error = -7; 1337 break; 1338 } 1339 pd = disk->d_md_data; 1340 if (pd->pd_subdisks >= PROMISE_MAX_SUBDISKS) { 1341 gctl_error(req, "Disk '%s' already " 1342 "used by %d volumes.", 1343 diskname, pd->pd_subdisks); 1344 error = -7; 1345 break; 1346 } 1347 pp = disk->d_consumer->provider; 1348 disks[i] = disk; 1349 promise_meta_unused_range(pd->pd_meta, 1350 pd->pd_subdisks, 1351 pp->mediasize / pp->sectorsize, 1352 &offs[i], &esize); 1353 size = MIN(size, (off_t)esize * pp->sectorsize); 1354 sectorsize = MAX(sectorsize, pp->sectorsize); 1355 continue; 1356 } 1357 1358 g_topology_lock(); 1359 cp = g_raid_open_consumer(sc, diskname); 1360 if (cp == NULL) { 1361 gctl_error(req, "Can't open disk '%s'.", 1362 diskname); 1363 g_topology_unlock(); 1364 error = -8; 1365 break; 1366 } 1367 pp = cp->provider; 1368 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1369 disk = g_raid_create_disk(sc); 1370 disk->d_md_data = (void *)pd; 1371 disk->d_consumer = cp; 1372 disks[i] = disk; 1373 cp->private = disk; 1374 g_topology_unlock(); 1375 1376 g_raid_get_disk_info(disk); 1377 1378 /* Reserve some space for metadata. */ 1379 size = MIN(size, pp->mediasize - 131072llu * pp->sectorsize); 1380 sectorsize = MAX(sectorsize, pp->sectorsize); 1381 } 1382 if (error != 0) { 1383 for (i = 0; i < numdisks; i++) { 1384 if (disks[i] != NULL && 1385 disks[i]->d_state == G_RAID_DISK_S_NONE) 1386 g_raid_destroy_disk(disks[i]); 1387 } 1388 return (error); 1389 } 1390 1391 if (sectorsize <= 0) { 1392 gctl_error(req, "Can't get sector size."); 1393 return (-8); 1394 } 1395 1396 /* Handle size argument. */ 1397 len = sizeof(*sizearg); 1398 sizearg = gctl_get_param(req, "size", &len); 1399 if (sizearg != NULL && len == sizeof(*sizearg) && 1400 *sizearg > 0) { 1401 if (*sizearg > size) { 1402 gctl_error(req, "Size too big %lld > %lld.", 1403 (long long)*sizearg, (long long)size); 1404 return (-9); 1405 } 1406 size = *sizearg; 1407 } 1408 1409 /* Handle strip argument. */ 1410 strip = 131072; 1411 len = sizeof(*striparg); 1412 striparg = gctl_get_param(req, "strip", &len); 1413 if (striparg != NULL && len == sizeof(*striparg) && 1414 *striparg > 0) { 1415 if (*striparg < sectorsize) { 1416 gctl_error(req, "Strip size too small."); 1417 return (-10); 1418 } 1419 if (*striparg % sectorsize != 0) { 1420 gctl_error(req, "Incorrect strip size."); 1421 return (-11); 1422 } 1423 strip = *striparg; 1424 } 1425 1426 /* Round size down to strip or sector. */ 1427 if (level == G_RAID_VOLUME_RL_RAID1 || 1428 level == G_RAID_VOLUME_RL_SINGLE || 1429 level == G_RAID_VOLUME_RL_CONCAT) 1430 size -= (size % sectorsize); 1431 else if (level == G_RAID_VOLUME_RL_RAID1E && 1432 (numdisks & 1) != 0) 1433 size -= (size % (2 * strip)); 1434 else 1435 size -= (size % strip); 1436 if (size <= 0) { 1437 gctl_error(req, "Size too small."); 1438 return (-13); 1439 } 1440 1441 /* We have all we need, create things: volume, ... */ 1442 pv = malloc(sizeof(*pv), M_MD_PROMISE, M_WAITOK | M_ZERO); 1443 arc4rand(&pv->pv_id, sizeof(pv->pv_id), 0); 1444 pv->pv_generation = 0; 1445 pv->pv_started = 1; 1446 vol = g_raid_create_volume(sc, volname, -1); 1447 vol->v_md_data = pv; 1448 vol->v_raid_level = level; 1449 vol->v_raid_level_qualifier = qual; 1450 vol->v_strip_size = strip; 1451 vol->v_disks_count = numdisks; 1452 if (level == G_RAID_VOLUME_RL_RAID0 || 1453 level == G_RAID_VOLUME_RL_CONCAT || 1454 level == G_RAID_VOLUME_RL_SINGLE) 1455 vol->v_mediasize = size * numdisks; 1456 else if (level == G_RAID_VOLUME_RL_RAID1) 1457 vol->v_mediasize = size; 1458 else if (level == G_RAID_VOLUME_RL_RAID3 || 1459 level == G_RAID_VOLUME_RL_RAID5) 1460 vol->v_mediasize = size * (numdisks - 1); 1461 else { /* RAID1E */ 1462 vol->v_mediasize = ((size * numdisks) / strip / 2) * 1463 strip; 1464 } 1465 vol->v_sectorsize = sectorsize; 1466 g_raid_start_volume(vol); 1467 1468 /* , and subdisks. */ 1469 for (i = 0; i < numdisks; i++) { 1470 disk = disks[i]; 1471 sd = &vol->v_subdisks[i]; 1472 sd->sd_disk = disk; 1473 sd->sd_offset = (off_t)offs[i] * 512; 1474 sd->sd_size = size; 1475 if (disk == NULL) 1476 continue; 1477 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 1478 g_raid_change_disk_state(disk, 1479 G_RAID_DISK_S_ACTIVE); 1480 g_raid_change_subdisk_state(sd, 1481 G_RAID_SUBDISK_S_ACTIVE); 1482 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 1483 G_RAID_EVENT_SUBDISK); 1484 } 1485 1486 /* Write metadata based on created entities. */ 1487 G_RAID_DEBUG1(0, sc, "Array started."); 1488 g_raid_md_write_promise(md, vol, NULL, NULL); 1489 1490 /* Pickup any STALE/SPARE disks to refill array if needed. */ 1491 g_raid_md_promise_refill(sc); 1492 1493 g_raid_event_send(vol, G_RAID_VOLUME_E_START, 1494 G_RAID_EVENT_VOLUME); 1495 return (0); 1496 } 1497 if (strcmp(verb, "add") == 0) { 1498 1499 gctl_error(req, "`add` command is not applicable, " 1500 "use `label` instead."); 1501 return (-99); 1502 } 1503 if (strcmp(verb, "delete") == 0) { 1504 1505 nodename = gctl_get_asciiparam(req, "arg0"); 1506 if (nodename != NULL && strcasecmp(sc->sc_name, nodename) != 0) 1507 nodename = NULL; 1508 1509 /* Full node destruction. */ 1510 if (*nargs == 1 && nodename != NULL) { 1511 /* Check if some volume is still open. */ 1512 force = gctl_get_paraml(req, "force", sizeof(*force)); 1513 if (force != NULL && *force == 0 && 1514 g_raid_nopens(sc) != 0) { 1515 gctl_error(req, "Some volume is still open."); 1516 return (-4); 1517 } 1518 1519 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1520 if (disk->d_consumer) 1521 promise_meta_erase(disk->d_consumer); 1522 } 1523 g_raid_destroy_node(sc, 0); 1524 return (0); 1525 } 1526 1527 /* Destroy specified volume. If it was last - all node. */ 1528 if (*nargs > 2) { 1529 gctl_error(req, "Invalid number of arguments."); 1530 return (-1); 1531 } 1532 volname = gctl_get_asciiparam(req, 1533 nodename != NULL ? "arg1" : "arg0"); 1534 if (volname == NULL) { 1535 gctl_error(req, "No volume name."); 1536 return (-2); 1537 } 1538 1539 /* Search for volume. */ 1540 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1541 if (strcmp(vol->v_name, volname) == 0) 1542 break; 1543 pp = vol->v_provider; 1544 if (pp == NULL) 1545 continue; 1546 if (strcmp(pp->name, volname) == 0) 1547 break; 1548 if (strncmp(pp->name, "raid/", 5) == 0 && 1549 strcmp(pp->name + 5, volname) == 0) 1550 break; 1551 } 1552 if (vol == NULL) { 1553 i = strtol(volname, &tmp, 10); 1554 if (verb != volname && tmp[0] == 0) { 1555 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1556 if (vol->v_global_id == i) 1557 break; 1558 } 1559 } 1560 } 1561 if (vol == NULL) { 1562 gctl_error(req, "Volume '%s' not found.", volname); 1563 return (-3); 1564 } 1565 1566 /* Check if volume is still open. */ 1567 force = gctl_get_paraml(req, "force", sizeof(*force)); 1568 if (force != NULL && *force == 0 && 1569 vol->v_provider_open != 0) { 1570 gctl_error(req, "Volume is still open."); 1571 return (-4); 1572 } 1573 1574 /* Destroy volume and potentially node. */ 1575 i = 0; 1576 TAILQ_FOREACH(vol1, &sc->sc_volumes, v_next) 1577 i++; 1578 if (i >= 2) { 1579 g_raid_destroy_volume(vol); 1580 g_raid_md_promise_purge_disks(sc); 1581 g_raid_md_write_promise(md, NULL, NULL, NULL); 1582 } else { 1583 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1584 if (disk->d_consumer) 1585 promise_meta_erase(disk->d_consumer); 1586 } 1587 g_raid_destroy_node(sc, 0); 1588 } 1589 return (0); 1590 } 1591 if (strcmp(verb, "remove") == 0 || 1592 strcmp(verb, "fail") == 0) { 1593 if (*nargs < 2) { 1594 gctl_error(req, "Invalid number of arguments."); 1595 return (-1); 1596 } 1597 for (i = 1; i < *nargs; i++) { 1598 snprintf(arg, sizeof(arg), "arg%d", i); 1599 diskname = gctl_get_asciiparam(req, arg); 1600 if (diskname == NULL) { 1601 gctl_error(req, "No disk name (%s).", arg); 1602 error = -2; 1603 break; 1604 } 1605 if (strncmp(diskname, "/dev/", 5) == 0) 1606 diskname += 5; 1607 1608 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1609 if (disk->d_consumer != NULL && 1610 disk->d_consumer->provider != NULL && 1611 strcmp(disk->d_consumer->provider->name, 1612 diskname) == 0) 1613 break; 1614 } 1615 if (disk == NULL) { 1616 gctl_error(req, "Disk '%s' not found.", 1617 diskname); 1618 error = -3; 1619 break; 1620 } 1621 1622 if (strcmp(verb, "fail") == 0) { 1623 g_raid_md_fail_disk_promise(md, NULL, disk); 1624 continue; 1625 } 1626 1627 /* Erase metadata on deleting disk and destroy it. */ 1628 promise_meta_erase(disk->d_consumer); 1629 g_raid_destroy_disk(disk); 1630 } 1631 g_raid_md_promise_purge_volumes(sc); 1632 1633 /* Write updated metadata to remaining disks. */ 1634 g_raid_md_write_promise(md, NULL, NULL, NULL); 1635 1636 /* Check if anything left. */ 1637 if (g_raid_ndisks(sc, -1) == 0) 1638 g_raid_destroy_node(sc, 0); 1639 else 1640 g_raid_md_promise_refill(sc); 1641 return (error); 1642 } 1643 if (strcmp(verb, "insert") == 0) { 1644 if (*nargs < 2) { 1645 gctl_error(req, "Invalid number of arguments."); 1646 return (-1); 1647 } 1648 for (i = 1; i < *nargs; i++) { 1649 /* Get disk name. */ 1650 snprintf(arg, sizeof(arg), "arg%d", i); 1651 diskname = gctl_get_asciiparam(req, arg); 1652 if (diskname == NULL) { 1653 gctl_error(req, "No disk name (%s).", arg); 1654 error = -3; 1655 break; 1656 } 1657 1658 /* Try to find provider with specified name. */ 1659 g_topology_lock(); 1660 cp = g_raid_open_consumer(sc, diskname); 1661 if (cp == NULL) { 1662 gctl_error(req, "Can't open disk '%s'.", 1663 diskname); 1664 g_topology_unlock(); 1665 error = -4; 1666 break; 1667 } 1668 pp = cp->provider; 1669 g_topology_unlock(); 1670 1671 pd = malloc(sizeof(*pd), M_MD_PROMISE, M_WAITOK | M_ZERO); 1672 1673 disk = g_raid_create_disk(sc); 1674 disk->d_consumer = cp; 1675 disk->d_md_data = (void *)pd; 1676 cp->private = disk; 1677 1678 g_raid_get_disk_info(disk); 1679 1680 /* Welcome the "new" disk. */ 1681 g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE); 1682 promise_meta_write_spare(cp); 1683 g_raid_md_promise_refill(sc); 1684 } 1685 return (error); 1686 } 1687 return (-100); 1688 } 1689 1690 static int 1691 g_raid_md_write_promise(struct g_raid_md_object *md, struct g_raid_volume *tvol, 1692 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1693 { 1694 struct g_raid_softc *sc; 1695 struct g_raid_volume *vol; 1696 struct g_raid_subdisk *sd; 1697 struct g_raid_disk *disk; 1698 struct g_raid_md_promise_perdisk *pd; 1699 struct g_raid_md_promise_pervolume *pv; 1700 struct promise_raid_conf *meta; 1701 off_t rebuild_lba64; 1702 int i, j, pos, rebuild; 1703 1704 sc = md->mdo_softc; 1705 1706 if (sc->sc_stopping == G_RAID_DESTROY_HARD) 1707 return (0); 1708 1709 /* Generate new per-volume metadata for affected volumes. */ 1710 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 1711 if (vol->v_stopping) 1712 continue; 1713 1714 /* Skip volumes not related to specified targets. */ 1715 if (tvol != NULL && vol != tvol) 1716 continue; 1717 if (tsd != NULL && vol != tsd->sd_volume) 1718 continue; 1719 if (tdisk != NULL) { 1720 for (i = 0; i < vol->v_disks_count; i++) { 1721 if (vol->v_subdisks[i].sd_disk == tdisk) 1722 break; 1723 } 1724 if (i >= vol->v_disks_count) 1725 continue; 1726 } 1727 1728 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1729 pv->pv_generation++; 1730 1731 meta = malloc(sizeof(*meta), M_MD_PROMISE, M_WAITOK | M_ZERO); 1732 if (pv->pv_meta != NULL) 1733 memcpy(meta, pv->pv_meta, sizeof(*meta)); 1734 memcpy(meta->promise_id, PROMISE_MAGIC, 1735 sizeof(PROMISE_MAGIC) - 1); 1736 meta->dummy_0 = 0x00020000; 1737 meta->integrity = PROMISE_I_VALID; 1738 1739 meta->generation = pv->pv_generation; 1740 meta->status = PROMISE_S_VALID | PROMISE_S_ONLINE | 1741 PROMISE_S_INITED | PROMISE_S_READY; 1742 if (vol->v_state <= G_RAID_VOLUME_S_DEGRADED) 1743 meta->status |= PROMISE_S_DEGRADED; 1744 if (vol->v_dirty) 1745 meta->status |= PROMISE_S_MARKED; /* XXX: INVENTED! */ 1746 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0 || 1747 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) 1748 meta->type = PROMISE_T_RAID0; 1749 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1750 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) 1751 meta->type = PROMISE_T_RAID1; 1752 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3) 1753 meta->type = PROMISE_T_RAID3; 1754 else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) 1755 meta->type = PROMISE_T_RAID5; 1756 else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT) 1757 meta->type = PROMISE_T_SPAN; 1758 else 1759 meta->type = PROMISE_T_JBOD; 1760 meta->total_disks = vol->v_disks_count; 1761 meta->stripe_shift = ffs(vol->v_strip_size / 1024); 1762 meta->array_width = vol->v_disks_count; 1763 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1764 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) 1765 meta->array_width /= 2; 1766 meta->array_number = vol->v_global_id; 1767 meta->total_sectors = vol->v_mediasize / 512; 1768 meta->total_sectors_high = (vol->v_mediasize / 512) >> 32; 1769 meta->sector_size = vol->v_sectorsize / 512; 1770 meta->cylinders = meta->total_sectors / (255 * 63) - 1; 1771 meta->heads = 254; 1772 meta->sectors = 63; 1773 meta->volume_id = pv->pv_id; 1774 rebuild_lba64 = UINT64_MAX; 1775 rebuild = 0; 1776 for (i = 0; i < vol->v_disks_count; i++) { 1777 sd = &vol->v_subdisks[i]; 1778 /* For RAID0+1 we need to translate order. */ 1779 pos = promise_meta_translate_disk(vol, i); 1780 meta->disks[pos].flags = PROMISE_F_VALID | 1781 PROMISE_F_ASSIGNED; 1782 if (sd->sd_state == G_RAID_SUBDISK_S_NONE) { 1783 meta->disks[pos].flags |= 0; 1784 } else if (sd->sd_state == G_RAID_SUBDISK_S_FAILED) { 1785 meta->disks[pos].flags |= 1786 PROMISE_F_DOWN | PROMISE_F_REDIR; 1787 } else if (sd->sd_state <= G_RAID_SUBDISK_S_REBUILD) { 1788 meta->disks[pos].flags |= 1789 PROMISE_F_ONLINE | PROMISE_F_REDIR; 1790 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) { 1791 rebuild_lba64 = MIN(rebuild_lba64, 1792 sd->sd_rebuild_pos / 512); 1793 } else 1794 rebuild_lba64 = 0; 1795 rebuild = 1; 1796 } else { 1797 meta->disks[pos].flags |= PROMISE_F_ONLINE; 1798 if (sd->sd_state < G_RAID_SUBDISK_S_ACTIVE) { 1799 meta->status |= PROMISE_S_MARKED; 1800 if (sd->sd_state == G_RAID_SUBDISK_S_RESYNC) { 1801 rebuild_lba64 = MIN(rebuild_lba64, 1802 sd->sd_rebuild_pos / 512); 1803 } else 1804 rebuild_lba64 = 0; 1805 } 1806 } 1807 if (pv->pv_meta != NULL) { 1808 meta->disks[pos].id = pv->pv_meta->disks[pos].id; 1809 } else { 1810 meta->disks[pos].number = i * 2; 1811 arc4rand(&meta->disks[pos].id, 1812 sizeof(meta->disks[pos].id), 0); 1813 } 1814 } 1815 promise_meta_put_name(meta, vol->v_name); 1816 1817 /* Try to mimic AMD BIOS rebuild/resync behavior. */ 1818 if (rebuild_lba64 != UINT64_MAX) { 1819 if (rebuild) 1820 meta->magic_3 = 0x03040010UL; /* Rebuild? */ 1821 else 1822 meta->magic_3 = 0x03040008UL; /* Resync? */ 1823 /* Translate from per-disk to per-volume LBA. */ 1824 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1 || 1825 vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1826 rebuild_lba64 *= meta->array_width; 1827 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID3 || 1828 vol->v_raid_level == G_RAID_VOLUME_RL_RAID5) { 1829 rebuild_lba64 *= meta->array_width - 1; 1830 } else 1831 rebuild_lba64 = 0; 1832 } else 1833 meta->magic_3 = 0x03000000UL; 1834 meta->rebuild_lba64 = rebuild_lba64; 1835 meta->magic_4 = 0x04010101UL; 1836 1837 /* Replace per-volume metadata with new. */ 1838 if (pv->pv_meta != NULL) 1839 free(pv->pv_meta, M_MD_PROMISE); 1840 pv->pv_meta = meta; 1841 1842 /* Copy new metadata to the disks, adding or replacing old. */ 1843 for (i = 0; i < vol->v_disks_count; i++) { 1844 sd = &vol->v_subdisks[i]; 1845 disk = sd->sd_disk; 1846 if (disk == NULL) 1847 continue; 1848 /* For RAID0+1 we need to translate order. */ 1849 pos = promise_meta_translate_disk(vol, i); 1850 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1851 for (j = 0; j < pd->pd_subdisks; j++) { 1852 if (pd->pd_meta[j]->volume_id == meta->volume_id) 1853 break; 1854 } 1855 if (j == pd->pd_subdisks) 1856 pd->pd_subdisks++; 1857 if (pd->pd_meta[j] != NULL) 1858 free(pd->pd_meta[j], M_MD_PROMISE); 1859 pd->pd_meta[j] = promise_meta_copy(meta); 1860 pd->pd_meta[j]->disk = meta->disks[pos]; 1861 pd->pd_meta[j]->disk.number = pos; 1862 pd->pd_meta[j]->disk_offset_high = 1863 (sd->sd_offset / 512) >> 32; 1864 pd->pd_meta[j]->disk_offset = sd->sd_offset / 512; 1865 pd->pd_meta[j]->disk_sectors_high = 1866 (sd->sd_size / 512) >> 32; 1867 pd->pd_meta[j]->disk_sectors = sd->sd_size / 512; 1868 if (sd->sd_state == G_RAID_SUBDISK_S_REBUILD) { 1869 pd->pd_meta[j]->disk_rebuild_high = 1870 (sd->sd_rebuild_pos / 512) >> 32; 1871 pd->pd_meta[j]->disk_rebuild = 1872 sd->sd_rebuild_pos / 512; 1873 } else if (sd->sd_state < G_RAID_SUBDISK_S_REBUILD) { 1874 pd->pd_meta[j]->disk_rebuild_high = 0; 1875 pd->pd_meta[j]->disk_rebuild = 0; 1876 } else { 1877 pd->pd_meta[j]->disk_rebuild_high = UINT32_MAX; 1878 pd->pd_meta[j]->disk_rebuild = UINT32_MAX; 1879 } 1880 pd->pd_updated = 1; 1881 } 1882 } 1883 1884 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1885 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1886 if (disk->d_state != G_RAID_DISK_S_ACTIVE) 1887 continue; 1888 if (!pd->pd_updated) 1889 continue; 1890 G_RAID_DEBUG(1, "Writing Promise metadata to %s", 1891 g_raid_get_diskname(disk)); 1892 for (i = 0; i < pd->pd_subdisks; i++) 1893 g_raid_md_promise_print(pd->pd_meta[i]); 1894 promise_meta_write(disk->d_consumer, 1895 pd->pd_meta, pd->pd_subdisks); 1896 pd->pd_updated = 0; 1897 } 1898 1899 return (0); 1900 } 1901 1902 static int 1903 g_raid_md_fail_disk_promise(struct g_raid_md_object *md, 1904 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1905 { 1906 struct g_raid_softc *sc; 1907 struct g_raid_md_promise_perdisk *pd; 1908 struct g_raid_subdisk *sd; 1909 int i, pos; 1910 1911 sc = md->mdo_softc; 1912 pd = (struct g_raid_md_promise_perdisk *)tdisk->d_md_data; 1913 1914 /* We can't fail disk that is not a part of array now. */ 1915 if (tdisk->d_state != G_RAID_DISK_S_ACTIVE) 1916 return (-1); 1917 1918 /* 1919 * Mark disk as failed in metadata and try to write that metadata 1920 * to the disk itself to prevent it's later resurrection as STALE. 1921 */ 1922 if (pd->pd_subdisks > 0 && tdisk->d_consumer != NULL) 1923 G_RAID_DEBUG(1, "Writing Promise metadata to %s", 1924 g_raid_get_diskname(tdisk)); 1925 for (i = 0; i < pd->pd_subdisks; i++) { 1926 pd->pd_meta[i]->disk.flags |= 1927 PROMISE_F_DOWN | PROMISE_F_REDIR; 1928 pos = pd->pd_meta[i]->disk.number; 1929 if (pos >= 0 && pos < PROMISE_MAX_DISKS) { 1930 pd->pd_meta[i]->disks[pos].flags |= 1931 PROMISE_F_DOWN | PROMISE_F_REDIR; 1932 } 1933 g_raid_md_promise_print(pd->pd_meta[i]); 1934 } 1935 if (tdisk->d_consumer != NULL) 1936 promise_meta_write(tdisk->d_consumer, 1937 pd->pd_meta, pd->pd_subdisks); 1938 1939 /* Change states. */ 1940 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED); 1941 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) { 1942 g_raid_change_subdisk_state(sd, 1943 G_RAID_SUBDISK_S_FAILED); 1944 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED, 1945 G_RAID_EVENT_SUBDISK); 1946 } 1947 1948 /* Write updated metadata to remaining disks. */ 1949 g_raid_md_write_promise(md, NULL, NULL, tdisk); 1950 1951 g_raid_md_promise_refill(sc); 1952 return (0); 1953 } 1954 1955 static int 1956 g_raid_md_free_disk_promise(struct g_raid_md_object *md, 1957 struct g_raid_disk *disk) 1958 { 1959 struct g_raid_md_promise_perdisk *pd; 1960 int i; 1961 1962 pd = (struct g_raid_md_promise_perdisk *)disk->d_md_data; 1963 for (i = 0; i < pd->pd_subdisks; i++) { 1964 if (pd->pd_meta[i] != NULL) { 1965 free(pd->pd_meta[i], M_MD_PROMISE); 1966 pd->pd_meta[i] = NULL; 1967 } 1968 } 1969 free(pd, M_MD_PROMISE); 1970 disk->d_md_data = NULL; 1971 return (0); 1972 } 1973 1974 static int 1975 g_raid_md_free_volume_promise(struct g_raid_md_object *md, 1976 struct g_raid_volume *vol) 1977 { 1978 struct g_raid_md_promise_pervolume *pv; 1979 1980 pv = (struct g_raid_md_promise_pervolume *)vol->v_md_data; 1981 if (pv && pv->pv_meta != NULL) { 1982 free(pv->pv_meta, M_MD_PROMISE); 1983 pv->pv_meta = NULL; 1984 } 1985 if (pv && !pv->pv_started) { 1986 pv->pv_started = 1; 1987 callout_stop(&pv->pv_start_co); 1988 } 1989 free(pv, M_MD_PROMISE); 1990 vol->v_md_data = NULL; 1991 return (0); 1992 } 1993 1994 static int 1995 g_raid_md_free_promise(struct g_raid_md_object *md) 1996 { 1997 1998 return (0); 1999 } 2000 2001 G_RAID_MD_DECLARE(promise, "Promise"); 2002