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sys/geom/raid/md_sii.c
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1 /*- 2 * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD: releng/8.3/sys/geom/raid/md_sii.c 223177 2011-06-17 06:59:49Z mav $"); 29 30 #include <sys/param.h> 31 #include <sys/bio.h> 32 #include <sys/endian.h> 33 #include <sys/kernel.h> 34 #include <sys/kobj.h> 35 #include <sys/limits.h> 36 #include <sys/lock.h> 37 #include <sys/malloc.h> 38 #include <sys/mutex.h> 39 #include <sys/systm.h> 40 #include <sys/taskqueue.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_SII, "md_sii_data", "GEOM_RAID SiI metadata"); 46 47 struct sii_raid_conf { 48 uint16_t ata_params_00_53[54]; 49 uint64_t total_sectors; /* 54 - 57 */ 50 uint16_t ata_params_58_81[72]; 51 uint16_t product_id; /* 130 */ 52 uint16_t vendor_id; /* 131 */ 53 uint16_t version_minor; /* 132 */ 54 uint16_t version_major; /* 133 */ 55 uint8_t timestamp[6]; /* 134 - 136 */ 56 uint16_t strip_sectors; /* 137 */ 57 uint16_t dummy_2; 58 uint8_t disk_number; /* 139 */ 59 uint8_t type; 60 #define SII_T_RAID0 0x00 61 #define SII_T_RAID1 0x01 62 #define SII_T_RAID01 0x02 63 #define SII_T_SPARE 0x03 64 #define SII_T_CONCAT 0x04 65 #define SII_T_RAID5 0x10 66 #define SII_T_RESERVED 0xfd 67 #define SII_T_JBOD 0xff 68 69 uint8_t raid0_disks; /* 140 */ 70 uint8_t raid0_ident; 71 uint8_t raid1_disks; /* 141 */ 72 uint8_t raid1_ident; 73 uint64_t rebuild_lba; /* 142 - 145 */ 74 uint32_t generation; /* 146 - 147 */ 75 uint8_t disk_status; /* 148 */ 76 #define SII_S_CURRENT 0x01 77 #define SII_S_REBUILD 0x02 78 #define SII_S_DROPPED 0x03 79 #define SII_S_REMOVED 0x04 80 81 uint8_t raid_status; 82 #define SII_S_ONLINE 0x01 83 #define SII_S_AVAILABLE 0x02 84 85 uint8_t raid_location; /* 149 */ 86 uint8_t disk_location; 87 uint8_t auto_rebuild; /* 150 */ 88 #define SII_R_REBUILD 0x00 89 #define SII_R_NOREBUILD 0xff 90 91 uint8_t dummy_3; 92 uint8_t name[16]; /* 151 - 158 */ 93 uint16_t checksum; /* 159 */ 94 uint16_t ata_params_160_255[96]; 95 } __packed; 96 97 struct g_raid_md_sii_perdisk { 98 struct sii_raid_conf *pd_meta; 99 int pd_disk_pos; 100 off_t pd_disk_size; 101 }; 102 103 struct g_raid_md_sii_object { 104 struct g_raid_md_object mdio_base; 105 uint8_t mdio_timestamp[6]; 106 uint8_t mdio_location; 107 uint32_t mdio_generation; 108 struct sii_raid_conf *mdio_meta; 109 struct callout mdio_start_co; /* STARTING state timer. */ 110 int mdio_total_disks; 111 int mdio_disks_present; 112 int mdio_started; 113 int mdio_incomplete; 114 struct root_hold_token *mdio_rootmount; /* Root mount delay token. */ 115 }; 116 117 static g_raid_md_create_t g_raid_md_create_sii; 118 static g_raid_md_taste_t g_raid_md_taste_sii; 119 static g_raid_md_event_t g_raid_md_event_sii; 120 static g_raid_md_ctl_t g_raid_md_ctl_sii; 121 static g_raid_md_write_t g_raid_md_write_sii; 122 static g_raid_md_fail_disk_t g_raid_md_fail_disk_sii; 123 static g_raid_md_free_disk_t g_raid_md_free_disk_sii; 124 static g_raid_md_free_t g_raid_md_free_sii; 125 126 static kobj_method_t g_raid_md_sii_methods[] = { 127 KOBJMETHOD(g_raid_md_create, g_raid_md_create_sii), 128 KOBJMETHOD(g_raid_md_taste, g_raid_md_taste_sii), 129 KOBJMETHOD(g_raid_md_event, g_raid_md_event_sii), 130 KOBJMETHOD(g_raid_md_ctl, g_raid_md_ctl_sii), 131 KOBJMETHOD(g_raid_md_write, g_raid_md_write_sii), 132 KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_sii), 133 KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_sii), 134 KOBJMETHOD(g_raid_md_free, g_raid_md_free_sii), 135 { 0, 0 } 136 }; 137 138 static struct g_raid_md_class g_raid_md_sii_class = { 139 "SiI", 140 g_raid_md_sii_methods, 141 sizeof(struct g_raid_md_sii_object), 142 .mdc_priority = 100 143 }; 144 145 static void 146 g_raid_md_sii_print(struct sii_raid_conf *meta) 147 { 148 149 if (g_raid_debug < 1) 150 return; 151 152 printf("********* ATA SiI RAID Metadata *********\n"); 153 printf("total_sectors %llu\n", 154 (long long unsigned)meta->total_sectors); 155 printf("product_id 0x%04x\n", meta->product_id); 156 printf("vendor_id 0x%04x\n", meta->vendor_id); 157 printf("version_minor 0x%04x\n", meta->version_minor); 158 printf("version_major 0x%04x\n", meta->version_major); 159 printf("timestamp 0x%02x%02x%02x%02x%02x%02x\n", 160 meta->timestamp[5], meta->timestamp[4], meta->timestamp[3], 161 meta->timestamp[2], meta->timestamp[1], meta->timestamp[0]); 162 printf("strip_sectors %d\n", meta->strip_sectors); 163 printf("disk_number %d\n", meta->disk_number); 164 printf("type 0x%02x\n", meta->type); 165 printf("raid0_disks %d\n", meta->raid0_disks); 166 printf("raid0_ident %d\n", meta->raid0_ident); 167 printf("raid1_disks %d\n", meta->raid1_disks); 168 printf("raid1_ident %d\n", meta->raid1_ident); 169 printf("rebuild_lba %llu\n", 170 (long long unsigned)meta->rebuild_lba); 171 printf("generation %d\n", meta->generation); 172 printf("disk_status %d\n", meta->disk_status); 173 printf("raid_status %d\n", meta->raid_status); 174 printf("raid_location %d\n", meta->raid_location); 175 printf("disk_location %d\n", meta->disk_location); 176 printf("auto_rebuild %d\n", meta->auto_rebuild); 177 printf("name <%.16s>\n", meta->name); 178 printf("checksum 0x%04x\n", meta->checksum); 179 printf("=================================================\n"); 180 } 181 182 static struct sii_raid_conf * 183 sii_meta_copy(struct sii_raid_conf *meta) 184 { 185 struct sii_raid_conf *nmeta; 186 187 nmeta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK); 188 memcpy(nmeta, meta, sizeof(*meta)); 189 return (nmeta); 190 } 191 192 static int 193 sii_meta_total_disks(struct sii_raid_conf *meta) 194 { 195 196 switch (meta->type) { 197 case SII_T_RAID0: 198 case SII_T_RAID5: 199 case SII_T_CONCAT: 200 return (meta->raid0_disks); 201 case SII_T_RAID1: 202 return (meta->raid1_disks); 203 case SII_T_RAID01: 204 return (meta->raid0_disks * meta->raid1_disks); 205 case SII_T_SPARE: 206 case SII_T_JBOD: 207 return (1); 208 } 209 return (0); 210 } 211 212 static int 213 sii_meta_disk_pos(struct sii_raid_conf *meta, struct sii_raid_conf *pdmeta) 214 { 215 216 if (pdmeta->type == SII_T_SPARE) 217 return (-3); 218 219 if (memcmp(&meta->timestamp, &pdmeta->timestamp, 6) != 0) 220 return (-1); 221 222 switch (pdmeta->type) { 223 case SII_T_RAID0: 224 case SII_T_RAID1: 225 case SII_T_RAID5: 226 case SII_T_CONCAT: 227 return (pdmeta->disk_number); 228 case SII_T_RAID01: 229 return (pdmeta->raid1_ident * pdmeta->raid1_disks + 230 pdmeta->raid0_ident); 231 case SII_T_JBOD: 232 return (0); 233 } 234 return (-1); 235 } 236 237 static void 238 sii_meta_get_name(struct sii_raid_conf *meta, char *buf) 239 { 240 int i; 241 242 strncpy(buf, meta->name, 16); 243 buf[16] = 0; 244 for (i = 15; i >= 0; i--) { 245 if (buf[i] > 0x20) 246 break; 247 buf[i] = 0; 248 } 249 } 250 251 static void 252 sii_meta_put_name(struct sii_raid_conf *meta, char *buf) 253 { 254 255 memset(meta->name, 0x20, 16); 256 memcpy(meta->name, buf, MIN(strlen(buf), 16)); 257 } 258 259 static struct sii_raid_conf * 260 sii_meta_read(struct g_consumer *cp) 261 { 262 struct g_provider *pp; 263 struct sii_raid_conf *meta; 264 char *buf; 265 int error, i; 266 uint16_t checksum, *ptr; 267 268 pp = cp->provider; 269 270 /* Read the anchor sector. */ 271 buf = g_read_data(cp, 272 pp->mediasize - pp->sectorsize, pp->sectorsize, &error); 273 if (buf == NULL) { 274 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).", 275 pp->name, error); 276 return (NULL); 277 } 278 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK); 279 memcpy(meta, buf, min(sizeof(*meta), pp->sectorsize)); 280 g_free(buf); 281 282 /* Check vendor ID. */ 283 if (meta->vendor_id != 0x1095) { 284 G_RAID_DEBUG(1, "SiI vendor ID check failed on %s (0x%04x)", 285 pp->name, meta->vendor_id); 286 free(meta, M_MD_SII); 287 return (NULL); 288 } 289 290 /* Check metadata major version. */ 291 if (meta->version_major != 2) { 292 G_RAID_DEBUG(1, "SiI version check failed on %s (%d.%d)", 293 pp->name, meta->version_major, meta->version_minor); 294 free(meta, M_MD_SII); 295 return (NULL); 296 } 297 298 /* Check metadata checksum. */ 299 for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i <= 159; i++) 300 checksum += *ptr++; 301 if (checksum != 0) { 302 G_RAID_DEBUG(1, "SiI checksum check failed on %s", pp->name); 303 free(meta, M_MD_SII); 304 return (NULL); 305 } 306 307 /* Check raid type. */ 308 if (meta->type != SII_T_RAID0 && meta->type != SII_T_RAID1 && 309 meta->type != SII_T_RAID01 && meta->type != SII_T_SPARE && 310 meta->type != SII_T_RAID5 && meta->type != SII_T_CONCAT && 311 meta->type != SII_T_JBOD) { 312 G_RAID_DEBUG(1, "SiI unknown RAID level on %s (0x%02x)", 313 pp->name, meta->type); 314 free(meta, M_MD_SII); 315 return (NULL); 316 } 317 318 return (meta); 319 } 320 321 static int 322 sii_meta_write(struct g_consumer *cp, struct sii_raid_conf *meta) 323 { 324 struct g_provider *pp; 325 char *buf; 326 int error, i; 327 uint16_t checksum, *ptr; 328 329 pp = cp->provider; 330 331 /* Recalculate checksum for case if metadata were changed. */ 332 meta->checksum = 0; 333 for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i < 159; i++) 334 checksum += *ptr++; 335 meta->checksum -= checksum; 336 337 /* Create and fill buffer. */ 338 buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO); 339 memcpy(buf, meta, sizeof(*meta)); 340 341 /* Write 4 copies of metadata. */ 342 for (i = 0; i < 4; i++) { 343 error = g_write_data(cp, 344 pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)), 345 buf, pp->sectorsize); 346 if (error != 0) { 347 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).", 348 pp->name, error); 349 break; 350 } 351 } 352 353 free(buf, M_MD_SII); 354 return (error); 355 } 356 357 static int 358 sii_meta_erase(struct g_consumer *cp) 359 { 360 struct g_provider *pp; 361 char *buf; 362 int error, i; 363 364 pp = cp->provider; 365 buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO); 366 /* Write 4 copies of metadata. */ 367 for (i = 0; i < 4; i++) { 368 error = g_write_data(cp, 369 pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)), 370 buf, pp->sectorsize); 371 if (error != 0) { 372 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).", 373 pp->name, error); 374 } 375 } 376 free(buf, M_MD_SII); 377 return (error); 378 } 379 380 static int 381 sii_meta_write_spare(struct g_consumer *cp) 382 { 383 struct sii_raid_conf *meta; 384 int error; 385 386 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO); 387 meta->total_sectors = cp->provider->mediasize / 388 cp->provider->sectorsize - 0x800; 389 meta->vendor_id = 0x1095; 390 meta->version_minor = 0; 391 meta->version_major = 2; 392 meta->timestamp[0] = arc4random(); 393 meta->timestamp[1] = arc4random(); 394 meta->timestamp[2] = arc4random(); 395 meta->timestamp[3] = arc4random(); 396 meta->timestamp[4] = arc4random(); 397 meta->timestamp[5] = arc4random(); 398 meta->type = SII_T_SPARE; 399 meta->generation = 1; 400 meta->raid1_ident = 0xff; 401 meta->raid_location = arc4random(); 402 error = sii_meta_write(cp, meta); 403 free(meta, M_MD_SII); 404 return (error); 405 } 406 407 static struct g_raid_disk * 408 g_raid_md_sii_get_disk(struct g_raid_softc *sc, int id) 409 { 410 struct g_raid_disk *disk; 411 struct g_raid_md_sii_perdisk *pd; 412 413 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 414 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 415 if (pd->pd_disk_pos == id) 416 break; 417 } 418 return (disk); 419 } 420 421 static int 422 g_raid_md_sii_supported(int level, int qual, int disks, int force) 423 { 424 425 if (disks > 8) 426 return (0); 427 switch (level) { 428 case G_RAID_VOLUME_RL_RAID0: 429 if (disks < 1) 430 return (0); 431 if (!force && (disks < 2 || disks > 6)) 432 return (0); 433 break; 434 case G_RAID_VOLUME_RL_RAID1: 435 if (disks < 1) 436 return (0); 437 if (!force && (disks != 2)) 438 return (0); 439 break; 440 case G_RAID_VOLUME_RL_RAID1E: 441 if (disks < 2) 442 return (0); 443 if (disks % 2 != 0) 444 return (0); 445 if (!force && (disks < 4)) 446 return (0); 447 break; 448 case G_RAID_VOLUME_RL_SINGLE: 449 if (disks != 1) 450 return (0); 451 break; 452 case G_RAID_VOLUME_RL_CONCAT: 453 if (disks < 2) 454 return (0); 455 break; 456 case G_RAID_VOLUME_RL_RAID5: 457 if (disks < 3) 458 return (0); 459 break; 460 default: 461 return (0); 462 } 463 if (qual != G_RAID_VOLUME_RLQ_NONE) 464 return (0); 465 return (1); 466 } 467 468 static int 469 g_raid_md_sii_start_disk(struct g_raid_disk *disk) 470 { 471 struct g_raid_softc *sc; 472 struct g_raid_subdisk *sd, *tmpsd; 473 struct g_raid_disk *olddisk, *tmpdisk; 474 struct g_raid_md_object *md; 475 struct g_raid_md_sii_object *mdi; 476 struct g_raid_md_sii_perdisk *pd, *oldpd; 477 struct sii_raid_conf *meta; 478 int disk_pos, resurrection = 0; 479 480 sc = disk->d_softc; 481 md = sc->sc_md; 482 mdi = (struct g_raid_md_sii_object *)md; 483 meta = mdi->mdio_meta; 484 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 485 olddisk = NULL; 486 487 /* Find disk position in metadata by it's serial. */ 488 if (pd->pd_meta != NULL) 489 disk_pos = sii_meta_disk_pos(meta, pd->pd_meta); 490 else 491 disk_pos = -3; 492 if (disk_pos < 0) { 493 G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk"); 494 /* If we are in the start process, that's all for now. */ 495 if (!mdi->mdio_started) 496 goto nofit; 497 /* 498 * If we have already started - try to get use of the disk. 499 * Try to replace OFFLINE disks first, then FAILED. 500 */ 501 TAILQ_FOREACH(tmpdisk, &sc->sc_disks, d_next) { 502 if (tmpdisk->d_state != G_RAID_DISK_S_OFFLINE && 503 tmpdisk->d_state != G_RAID_DISK_S_FAILED) 504 continue; 505 /* Make sure this disk is big enough. */ 506 TAILQ_FOREACH(sd, &tmpdisk->d_subdisks, sd_next) { 507 if (sd->sd_offset + sd->sd_size + 512 > 508 pd->pd_disk_size) { 509 G_RAID_DEBUG1(1, sc, 510 "Disk too small (%ju < %ju)", 511 pd->pd_disk_size, 512 sd->sd_offset + sd->sd_size + 512); 513 break; 514 } 515 } 516 if (sd != NULL) 517 continue; 518 if (tmpdisk->d_state == G_RAID_DISK_S_OFFLINE) { 519 olddisk = tmpdisk; 520 break; 521 } else if (olddisk == NULL) 522 olddisk = tmpdisk; 523 } 524 if (olddisk == NULL) { 525 nofit: 526 if (disk_pos == -3 || pd->pd_disk_pos == -3) { 527 g_raid_change_disk_state(disk, 528 G_RAID_DISK_S_SPARE); 529 return (1); 530 } else { 531 g_raid_change_disk_state(disk, 532 G_RAID_DISK_S_STALE); 533 return (0); 534 } 535 } 536 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data; 537 disk_pos = oldpd->pd_disk_pos; 538 resurrection = 1; 539 } 540 541 if (olddisk == NULL) { 542 /* Find placeholder by position. */ 543 olddisk = g_raid_md_sii_get_disk(sc, disk_pos); 544 if (olddisk == NULL) 545 panic("No disk at position %d!", disk_pos); 546 if (olddisk->d_state != G_RAID_DISK_S_OFFLINE) { 547 G_RAID_DEBUG1(1, sc, "More then one disk for pos %d", 548 disk_pos); 549 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE); 550 return (0); 551 } 552 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data; 553 } 554 555 /* Replace failed disk or placeholder with new disk. */ 556 TAILQ_FOREACH_SAFE(sd, &olddisk->d_subdisks, sd_next, tmpsd) { 557 TAILQ_REMOVE(&olddisk->d_subdisks, sd, sd_next); 558 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 559 sd->sd_disk = disk; 560 } 561 oldpd->pd_disk_pos = -2; 562 pd->pd_disk_pos = disk_pos; 563 564 /* If it was placeholder -- destroy it. */ 565 if (olddisk->d_state == G_RAID_DISK_S_OFFLINE) { 566 g_raid_destroy_disk(olddisk); 567 } else { 568 /* Otherwise, make it STALE_FAILED. */ 569 g_raid_change_disk_state(olddisk, G_RAID_DISK_S_STALE_FAILED); 570 } 571 572 /* Welcome the new disk. */ 573 if (resurrection) 574 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 575 else if (pd->pd_meta->disk_status == SII_S_CURRENT || 576 pd->pd_meta->disk_status == SII_S_REBUILD) 577 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 578 else 579 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED); 580 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 581 582 /* 583 * Different disks may have different sizes, 584 * in concat mode. Update from real disk size. 585 */ 586 if (meta->type == SII_T_CONCAT || meta->type == SII_T_JBOD) 587 sd->sd_size = pd->pd_disk_size - 0x800 * 512; 588 589 if (resurrection) { 590 /* New or ex-spare disk. */ 591 g_raid_change_subdisk_state(sd, 592 G_RAID_SUBDISK_S_NEW); 593 } else if (pd->pd_meta->disk_status == SII_S_REBUILD) { 594 /* Rebuilding disk. */ 595 g_raid_change_subdisk_state(sd, 596 G_RAID_SUBDISK_S_REBUILD); 597 if (pd->pd_meta->generation == meta->generation) 598 sd->sd_rebuild_pos = pd->pd_meta->rebuild_lba * 512; 599 else 600 sd->sd_rebuild_pos = 0; 601 } else if (pd->pd_meta->disk_status == SII_S_CURRENT) { 602 if (pd->pd_meta->raid_status == SII_S_ONLINE || 603 pd->pd_meta->generation != meta->generation) { 604 /* Dirty or resyncing disk. */ 605 g_raid_change_subdisk_state(sd, 606 G_RAID_SUBDISK_S_STALE); 607 } else { 608 /* Up to date disk. */ 609 g_raid_change_subdisk_state(sd, 610 G_RAID_SUBDISK_S_ACTIVE); 611 } 612 } else { 613 g_raid_change_subdisk_state(sd, 614 G_RAID_SUBDISK_S_FAILED); 615 } 616 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 617 G_RAID_EVENT_SUBDISK); 618 } 619 620 /* Update status of our need for spare. */ 621 if (mdi->mdio_started) { 622 mdi->mdio_incomplete = 623 (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) < 624 mdi->mdio_total_disks); 625 } 626 627 return (resurrection); 628 } 629 630 static void 631 g_disk_md_sii_retaste(void *arg, int pending) 632 { 633 634 G_RAID_DEBUG(1, "Array is not complete, trying to retaste."); 635 g_retaste(&g_raid_class); 636 free(arg, M_MD_SII); 637 } 638 639 static void 640 g_raid_md_sii_refill(struct g_raid_softc *sc) 641 { 642 struct g_raid_md_object *md; 643 struct g_raid_md_sii_object *mdi; 644 struct g_raid_disk *disk; 645 struct task *task; 646 int update, na; 647 648 md = sc->sc_md; 649 mdi = (struct g_raid_md_sii_object *)md; 650 update = 0; 651 do { 652 /* Make sure we miss anything. */ 653 na = g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE); 654 if (na == mdi->mdio_total_disks) 655 break; 656 657 G_RAID_DEBUG1(1, md->mdo_softc, 658 "Array is not complete (%d of %d), " 659 "trying to refill.", na, mdi->mdio_total_disks); 660 661 /* Try to get use some of STALE disks. */ 662 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 663 if (disk->d_state == G_RAID_DISK_S_STALE) { 664 update += g_raid_md_sii_start_disk(disk); 665 if (disk->d_state == G_RAID_DISK_S_ACTIVE) 666 break; 667 } 668 } 669 if (disk != NULL) 670 continue; 671 672 /* Try to get use some of SPARE disks. */ 673 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 674 if (disk->d_state == G_RAID_DISK_S_SPARE) { 675 update += g_raid_md_sii_start_disk(disk); 676 if (disk->d_state == G_RAID_DISK_S_ACTIVE) 677 break; 678 } 679 } 680 } while (disk != NULL); 681 682 /* Write new metadata if we changed something. */ 683 if (update) 684 g_raid_md_write_sii(md, NULL, NULL, NULL); 685 686 /* Update status of our need for spare. */ 687 mdi->mdio_incomplete = (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) < 688 mdi->mdio_total_disks); 689 690 /* Request retaste hoping to find spare. */ 691 if (mdi->mdio_incomplete) { 692 task = malloc(sizeof(struct task), 693 M_MD_SII, M_WAITOK | M_ZERO); 694 TASK_INIT(task, 0, g_disk_md_sii_retaste, task); 695 taskqueue_enqueue(taskqueue_swi, task); 696 } 697 } 698 699 static void 700 g_raid_md_sii_start(struct g_raid_softc *sc) 701 { 702 struct g_raid_md_object *md; 703 struct g_raid_md_sii_object *mdi; 704 struct g_raid_md_sii_perdisk *pd; 705 struct sii_raid_conf *meta; 706 struct g_raid_volume *vol; 707 struct g_raid_subdisk *sd; 708 struct g_raid_disk *disk, *best; 709 off_t size; 710 int j, disk_pos; 711 uint32_t gendiff, bestgendiff; 712 char buf[17]; 713 714 md = sc->sc_md; 715 mdi = (struct g_raid_md_sii_object *)md; 716 meta = mdi->mdio_meta; 717 718 /* Create volumes and subdisks. */ 719 sii_meta_get_name(meta, buf); 720 vol = g_raid_create_volume(sc, buf, -1); 721 vol->v_mediasize = (off_t)meta->total_sectors * 512; 722 if (meta->type == SII_T_RAID0) { 723 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0; 724 size = vol->v_mediasize / mdi->mdio_total_disks; 725 } else if (meta->type == SII_T_RAID1) { 726 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1; 727 size = vol->v_mediasize; 728 } else if (meta->type == SII_T_RAID01) { 729 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E; 730 size = vol->v_mediasize / (mdi->mdio_total_disks / 2); 731 } else if (meta->type == SII_T_CONCAT) { 732 if (mdi->mdio_total_disks == 1) 733 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 734 else 735 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT; 736 size = 0; 737 } else if (meta->type == SII_T_RAID5) { 738 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5; 739 size = vol->v_mediasize / (mdi->mdio_total_disks - 1); 740 } else if (meta->type == SII_T_JBOD) { 741 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 742 size = 0; 743 } else { 744 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN; 745 size = 0; 746 } 747 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 748 vol->v_strip_size = meta->strip_sectors * 512; //ZZZ 749 vol->v_disks_count = mdi->mdio_total_disks; 750 vol->v_sectorsize = 512; //ZZZ 751 for (j = 0; j < vol->v_disks_count; j++) { 752 sd = &vol->v_subdisks[j]; 753 sd->sd_offset = 0; 754 sd->sd_size = size; 755 } 756 g_raid_start_volume(vol); 757 758 /* Create disk placeholders to store data for later writing. */ 759 for (disk_pos = 0; disk_pos < mdi->mdio_total_disks; disk_pos++) { 760 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 761 pd->pd_disk_pos = disk_pos; 762 disk = g_raid_create_disk(sc); 763 disk->d_md_data = (void *)pd; 764 disk->d_state = G_RAID_DISK_S_OFFLINE; 765 sd = &vol->v_subdisks[disk_pos]; 766 sd->sd_disk = disk; 767 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 768 } 769 770 /* 771 * Make all disks found till the moment take their places 772 * in order of their generation numbers. 773 */ 774 do { 775 best = NULL; 776 bestgendiff = 0xffffffff; 777 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 778 if (disk->d_state != G_RAID_DISK_S_NONE) 779 continue; 780 pd = disk->d_md_data; 781 if (pd->pd_meta == NULL) 782 gendiff = 0xfffffffe; 783 else 784 gendiff = meta->generation - 785 pd->pd_meta->generation; 786 if (gendiff < bestgendiff) { 787 best = disk; 788 bestgendiff = gendiff; 789 } 790 } 791 if (best != NULL) 792 g_raid_md_sii_start_disk(best); 793 } while (best != NULL); 794 795 mdi->mdio_started = 1; 796 G_RAID_DEBUG1(0, sc, "Array started."); 797 g_raid_md_write_sii(md, NULL, NULL, NULL); 798 799 /* Pickup any STALE/SPARE disks to refill array if needed. */ 800 g_raid_md_sii_refill(sc); 801 802 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME); 803 804 callout_stop(&mdi->mdio_start_co); 805 G_RAID_DEBUG1(1, sc, "root_mount_rel %p", mdi->mdio_rootmount); 806 root_mount_rel(mdi->mdio_rootmount); 807 mdi->mdio_rootmount = NULL; 808 } 809 810 static void 811 g_raid_md_sii_new_disk(struct g_raid_disk *disk) 812 { 813 struct g_raid_softc *sc; 814 struct g_raid_md_object *md; 815 struct g_raid_md_sii_object *mdi; 816 struct sii_raid_conf *pdmeta; 817 struct g_raid_md_sii_perdisk *pd; 818 819 sc = disk->d_softc; 820 md = sc->sc_md; 821 mdi = (struct g_raid_md_sii_object *)md; 822 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 823 pdmeta = pd->pd_meta; 824 825 if (mdi->mdio_started) { 826 if (g_raid_md_sii_start_disk(disk)) 827 g_raid_md_write_sii(md, NULL, NULL, NULL); 828 } else { 829 if (mdi->mdio_meta == NULL || 830 ((int32_t)(pdmeta->generation - mdi->mdio_generation)) > 0) { 831 G_RAID_DEBUG1(1, sc, "Newer disk"); 832 if (mdi->mdio_meta != NULL) 833 free(mdi->mdio_meta, M_MD_SII); 834 mdi->mdio_meta = sii_meta_copy(pdmeta); 835 mdi->mdio_generation = mdi->mdio_meta->generation; 836 mdi->mdio_total_disks = sii_meta_total_disks(pdmeta); 837 mdi->mdio_disks_present = 1; 838 } else if (pdmeta->generation == mdi->mdio_generation) { 839 mdi->mdio_disks_present++; 840 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)", 841 mdi->mdio_disks_present, 842 mdi->mdio_total_disks); 843 } else { 844 G_RAID_DEBUG1(1, sc, "Older disk"); 845 } 846 847 /* If we collected all needed disks - start array. */ 848 if (mdi->mdio_disks_present == mdi->mdio_total_disks) 849 g_raid_md_sii_start(sc); 850 } 851 } 852 853 static void 854 g_raid_sii_go(void *arg) 855 { 856 struct g_raid_softc *sc; 857 struct g_raid_md_object *md; 858 struct g_raid_md_sii_object *mdi; 859 860 sc = arg; 861 md = sc->sc_md; 862 mdi = (struct g_raid_md_sii_object *)md; 863 if (!mdi->mdio_started) { 864 G_RAID_DEBUG1(0, sc, "Force array start due to timeout."); 865 g_raid_event_send(sc, G_RAID_NODE_E_START, 0); 866 } 867 } 868 869 static int 870 g_raid_md_create_sii(struct g_raid_md_object *md, struct g_class *mp, 871 struct g_geom **gp) 872 { 873 struct g_raid_softc *sc; 874 struct g_raid_md_sii_object *mdi; 875 char name[32]; 876 877 mdi = (struct g_raid_md_sii_object *)md; 878 mdi->mdio_timestamp[5] = arc4random(); 879 mdi->mdio_timestamp[4] = arc4random(); 880 mdi->mdio_timestamp[3] = arc4random(); 881 mdi->mdio_timestamp[2] = arc4random(); 882 mdi->mdio_timestamp[1] = arc4random(); 883 mdi->mdio_timestamp[0] = arc4random(); 884 mdi->mdio_location = arc4random(); 885 mdi->mdio_generation = 0; 886 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x", 887 mdi->mdio_timestamp[5], mdi->mdio_timestamp[4], 888 mdi->mdio_timestamp[3], mdi->mdio_timestamp[2], 889 mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]); 890 sc = g_raid_create_node(mp, name, md); 891 if (sc == NULL) 892 return (G_RAID_MD_TASTE_FAIL); 893 md->mdo_softc = sc; 894 *gp = sc->sc_geom; 895 return (G_RAID_MD_TASTE_NEW); 896 } 897 898 static int 899 g_raid_md_taste_sii(struct g_raid_md_object *md, struct g_class *mp, 900 struct g_consumer *cp, struct g_geom **gp) 901 { 902 struct g_consumer *rcp; 903 struct g_provider *pp; 904 struct g_raid_md_sii_object *mdi, *mdi1; 905 struct g_raid_softc *sc; 906 struct g_raid_disk *disk; 907 struct sii_raid_conf *meta; 908 struct g_raid_md_sii_perdisk *pd; 909 struct g_geom *geom; 910 int error, disk_pos, result, spare, len; 911 char name[32]; 912 uint16_t vendor; 913 914 G_RAID_DEBUG(1, "Tasting SiI on %s", cp->provider->name); 915 mdi = (struct g_raid_md_sii_object *)md; 916 pp = cp->provider; 917 918 /* Read metadata from device. */ 919 meta = NULL; 920 vendor = 0xffff; 921 if (g_access(cp, 1, 0, 0) != 0) 922 return (G_RAID_MD_TASTE_FAIL); 923 g_topology_unlock(); 924 len = 2; 925 if (pp->geom->rank == 1) 926 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor); 927 meta = sii_meta_read(cp); 928 g_topology_lock(); 929 g_access(cp, -1, 0, 0); 930 if (meta == NULL) { 931 if (g_raid_aggressive_spare) { 932 if (vendor == 0x1095) { 933 G_RAID_DEBUG(1, 934 "No SiI metadata, forcing spare."); 935 spare = 2; 936 goto search; 937 } else { 938 G_RAID_DEBUG(1, 939 "SiI vendor mismatch 0x%04x != 0x1095", 940 vendor); 941 } 942 } 943 return (G_RAID_MD_TASTE_FAIL); 944 } 945 946 /* Check this disk position in obtained metadata. */ 947 disk_pos = sii_meta_disk_pos(meta, meta); 948 if (disk_pos == -1) { 949 G_RAID_DEBUG(1, "SiI disk position not found"); 950 goto fail1; 951 } 952 953 /* Metadata valid. Print it. */ 954 g_raid_md_sii_print(meta); 955 G_RAID_DEBUG(1, "SiI disk position %d", disk_pos); 956 spare = (meta->type == SII_T_SPARE) ? 1 : 0; 957 958 search: 959 /* Search for matching node. */ 960 sc = NULL; 961 mdi1 = NULL; 962 LIST_FOREACH(geom, &mp->geom, geom) { 963 sc = geom->softc; 964 if (sc == NULL) 965 continue; 966 if (sc->sc_stopping != 0) 967 continue; 968 if (sc->sc_md->mdo_class != md->mdo_class) 969 continue; 970 mdi1 = (struct g_raid_md_sii_object *)sc->sc_md; 971 if (spare) { 972 if (mdi1->mdio_incomplete) 973 break; 974 } else { 975 if (mdi1->mdio_location == meta->raid_location && 976 memcmp(&mdi1->mdio_timestamp, 977 &meta->timestamp, 6) == 0) 978 break; 979 } 980 } 981 982 /* Found matching node. */ 983 if (geom != NULL) { 984 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name); 985 result = G_RAID_MD_TASTE_EXISTING; 986 987 } else if (spare) { /* Not found needy node -- left for later. */ 988 G_RAID_DEBUG(1, "Spare is not needed at this time"); 989 goto fail1; 990 991 } else { /* Not found matching node -- create one. */ 992 result = G_RAID_MD_TASTE_NEW; 993 memcpy(&mdi->mdio_timestamp, &meta->timestamp, 6); 994 mdi->mdio_location = meta->raid_location; 995 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x", 996 mdi->mdio_timestamp[5], mdi->mdio_timestamp[4], 997 mdi->mdio_timestamp[3], mdi->mdio_timestamp[2], 998 mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]); 999 sc = g_raid_create_node(mp, name, md); 1000 md->mdo_softc = sc; 1001 geom = sc->sc_geom; 1002 callout_init(&mdi->mdio_start_co, 1); 1003 callout_reset(&mdi->mdio_start_co, g_raid_start_timeout * hz, 1004 g_raid_sii_go, sc); 1005 mdi->mdio_rootmount = root_mount_hold("GRAID-SiI"); 1006 G_RAID_DEBUG1(1, sc, "root_mount_hold %p", mdi->mdio_rootmount); 1007 } 1008 1009 rcp = g_new_consumer(geom); 1010 g_attach(rcp, pp); 1011 if (g_access(rcp, 1, 1, 1) != 0) 1012 ; //goto fail1; 1013 1014 g_topology_unlock(); 1015 sx_xlock(&sc->sc_lock); 1016 1017 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1018 pd->pd_meta = meta; 1019 if (spare == 2) { 1020 pd->pd_disk_pos = -3; 1021 } else { 1022 pd->pd_disk_pos = -1; 1023 } 1024 pd->pd_disk_size = pp->mediasize; 1025 disk = g_raid_create_disk(sc); 1026 disk->d_md_data = (void *)pd; 1027 disk->d_consumer = rcp; 1028 rcp->private = disk; 1029 1030 /* Read kernel dumping information. */ 1031 disk->d_kd.offset = 0; 1032 disk->d_kd.length = OFF_MAX; 1033 len = sizeof(disk->d_kd); 1034 error = g_io_getattr("GEOM::kerneldump", rcp, &len, &disk->d_kd); 1035 if (disk->d_kd.di.dumper == NULL) 1036 G_RAID_DEBUG1(2, sc, "Dumping not supported by %s: %d.", 1037 rcp->provider->name, error); 1038 1039 g_raid_md_sii_new_disk(disk); 1040 1041 sx_xunlock(&sc->sc_lock); 1042 g_topology_lock(); 1043 *gp = geom; 1044 return (result); 1045 fail1: 1046 free(meta, M_MD_SII); 1047 return (G_RAID_MD_TASTE_FAIL); 1048 } 1049 1050 static int 1051 g_raid_md_event_sii(struct g_raid_md_object *md, 1052 struct g_raid_disk *disk, u_int event) 1053 { 1054 struct g_raid_softc *sc; 1055 struct g_raid_subdisk *sd; 1056 struct g_raid_md_sii_object *mdi; 1057 struct g_raid_md_sii_perdisk *pd; 1058 1059 sc = md->mdo_softc; 1060 mdi = (struct g_raid_md_sii_object *)md; 1061 if (disk == NULL) { 1062 switch (event) { 1063 case G_RAID_NODE_E_START: 1064 if (!mdi->mdio_started) 1065 g_raid_md_sii_start(sc); 1066 return (0); 1067 } 1068 return (-1); 1069 } 1070 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1071 switch (event) { 1072 case G_RAID_DISK_E_DISCONNECTED: 1073 /* If disk was assigned, just update statuses. */ 1074 if (pd->pd_disk_pos >= 0) { 1075 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1076 if (disk->d_consumer) { 1077 g_raid_kill_consumer(sc, disk->d_consumer); 1078 disk->d_consumer = NULL; 1079 } 1080 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 1081 g_raid_change_subdisk_state(sd, 1082 G_RAID_SUBDISK_S_NONE); 1083 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED, 1084 G_RAID_EVENT_SUBDISK); 1085 } 1086 } else { 1087 /* Otherwise -- delete. */ 1088 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1089 g_raid_destroy_disk(disk); 1090 } 1091 1092 /* Write updated metadata to all disks. */ 1093 g_raid_md_write_sii(md, NULL, NULL, NULL); 1094 1095 /* Check if anything left except placeholders. */ 1096 if (g_raid_ndisks(sc, -1) == 1097 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1098 g_raid_destroy_node(sc, 0); 1099 else 1100 g_raid_md_sii_refill(sc); 1101 return (0); 1102 } 1103 return (-2); 1104 } 1105 1106 static int 1107 g_raid_md_ctl_sii(struct g_raid_md_object *md, 1108 struct gctl_req *req) 1109 { 1110 struct g_raid_softc *sc; 1111 struct g_raid_volume *vol; 1112 struct g_raid_subdisk *sd; 1113 struct g_raid_disk *disk; 1114 struct g_raid_md_sii_object *mdi; 1115 struct g_raid_md_sii_perdisk *pd; 1116 struct g_consumer *cp; 1117 struct g_provider *pp; 1118 char arg[16]; 1119 const char *verb, *volname, *levelname, *diskname; 1120 int *nargs, *force; 1121 off_t size, sectorsize, strip; 1122 intmax_t *sizearg, *striparg; 1123 int numdisks, i, len, level, qual, update; 1124 int error; 1125 1126 sc = md->mdo_softc; 1127 mdi = (struct g_raid_md_sii_object *)md; 1128 verb = gctl_get_param(req, "verb", NULL); 1129 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 1130 error = 0; 1131 if (strcmp(verb, "label") == 0) { 1132 1133 if (*nargs < 4) { 1134 gctl_error(req, "Invalid number of arguments."); 1135 return (-1); 1136 } 1137 volname = gctl_get_asciiparam(req, "arg1"); 1138 if (volname == NULL) { 1139 gctl_error(req, "No volume name."); 1140 return (-2); 1141 } 1142 levelname = gctl_get_asciiparam(req, "arg2"); 1143 if (levelname == NULL) { 1144 gctl_error(req, "No RAID level."); 1145 return (-3); 1146 } 1147 if (g_raid_volume_str2level(levelname, &level, &qual)) { 1148 gctl_error(req, "Unknown RAID level '%s'.", levelname); 1149 return (-4); 1150 } 1151 numdisks = *nargs - 3; 1152 force = gctl_get_paraml(req, "force", sizeof(*force)); 1153 if (!g_raid_md_sii_supported(level, qual, numdisks, 1154 force ? *force : 0)) { 1155 gctl_error(req, "Unsupported RAID level " 1156 "(0x%02x/0x%02x), or number of disks (%d).", 1157 level, qual, numdisks); 1158 return (-5); 1159 } 1160 1161 /* Search for disks, connect them and probe. */ 1162 size = 0x7fffffffffffffffllu; 1163 sectorsize = 0; 1164 for (i = 0; i < numdisks; i++) { 1165 snprintf(arg, sizeof(arg), "arg%d", i + 3); 1166 diskname = gctl_get_asciiparam(req, arg); 1167 if (diskname == NULL) { 1168 gctl_error(req, "No disk name (%s).", arg); 1169 error = -6; 1170 break; 1171 } 1172 if (strcmp(diskname, "NONE") == 0) { 1173 cp = NULL; 1174 pp = NULL; 1175 } else { 1176 g_topology_lock(); 1177 cp = g_raid_open_consumer(sc, diskname); 1178 if (cp == NULL) { 1179 gctl_error(req, "Can't open '%s'.", 1180 diskname); 1181 g_topology_unlock(); 1182 error = -7; 1183 break; 1184 } 1185 pp = cp->provider; 1186 } 1187 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1188 pd->pd_disk_pos = i; 1189 disk = g_raid_create_disk(sc); 1190 disk->d_md_data = (void *)pd; 1191 disk->d_consumer = cp; 1192 if (cp == NULL) 1193 continue; 1194 cp->private = disk; 1195 g_topology_unlock(); 1196 1197 /* Read kernel dumping information. */ 1198 disk->d_kd.offset = 0; 1199 disk->d_kd.length = OFF_MAX; 1200 len = sizeof(disk->d_kd); 1201 g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd); 1202 if (disk->d_kd.di.dumper == NULL) 1203 G_RAID_DEBUG1(2, sc, 1204 "Dumping not supported by %s.", 1205 cp->provider->name); 1206 1207 pd->pd_disk_size = pp->mediasize; 1208 if (size > pp->mediasize) 1209 size = pp->mediasize; 1210 if (sectorsize < pp->sectorsize) 1211 sectorsize = pp->sectorsize; 1212 } 1213 if (error != 0) 1214 return (error); 1215 1216 if (sectorsize <= 0) { 1217 gctl_error(req, "Can't get sector size."); 1218 return (-8); 1219 } 1220 1221 /* Reserve space for metadata. */ 1222 size -= 0x800 * sectorsize; 1223 1224 /* Handle size argument. */ 1225 len = sizeof(*sizearg); 1226 sizearg = gctl_get_param(req, "size", &len); 1227 if (sizearg != NULL && len == sizeof(*sizearg) && 1228 *sizearg > 0) { 1229 if (*sizearg > size) { 1230 gctl_error(req, "Size too big %lld > %lld.", 1231 (long long)*sizearg, (long long)size); 1232 return (-9); 1233 } 1234 size = *sizearg; 1235 } 1236 1237 /* Handle strip argument. */ 1238 strip = 131072; 1239 len = sizeof(*striparg); 1240 striparg = gctl_get_param(req, "strip", &len); 1241 if (striparg != NULL && len == sizeof(*striparg) && 1242 *striparg > 0) { 1243 if (*striparg < sectorsize) { 1244 gctl_error(req, "Strip size too small."); 1245 return (-10); 1246 } 1247 if (*striparg % sectorsize != 0) { 1248 gctl_error(req, "Incorrect strip size."); 1249 return (-11); 1250 } 1251 if (strip > 65535 * sectorsize) { 1252 gctl_error(req, "Strip size too big."); 1253 return (-12); 1254 } 1255 strip = *striparg; 1256 } 1257 1258 /* Round size down to strip or sector. */ 1259 if (level == G_RAID_VOLUME_RL_RAID1) 1260 size -= (size % sectorsize); 1261 else if (level == G_RAID_VOLUME_RL_RAID1E && 1262 (numdisks & 1) != 0) 1263 size -= (size % (2 * strip)); 1264 else 1265 size -= (size % strip); 1266 if (size <= 0) { 1267 gctl_error(req, "Size too small."); 1268 return (-13); 1269 } 1270 if (size > 0xffffffffffffllu * sectorsize) { 1271 gctl_error(req, "Size too big."); 1272 return (-14); 1273 } 1274 1275 /* We have all we need, create things: volume, ... */ 1276 mdi->mdio_total_disks = numdisks; 1277 mdi->mdio_started = 1; 1278 vol = g_raid_create_volume(sc, volname, -1); 1279 vol->v_md_data = (void *)(intptr_t)0; 1280 vol->v_raid_level = level; 1281 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 1282 vol->v_strip_size = strip; 1283 vol->v_disks_count = numdisks; 1284 if (level == G_RAID_VOLUME_RL_RAID0 || 1285 level == G_RAID_VOLUME_RL_CONCAT || 1286 level == G_RAID_VOLUME_RL_SINGLE) 1287 vol->v_mediasize = size * numdisks; 1288 else if (level == G_RAID_VOLUME_RL_RAID1) 1289 vol->v_mediasize = size; 1290 else if (level == G_RAID_VOLUME_RL_RAID5) 1291 vol->v_mediasize = size * (numdisks - 1); 1292 else { /* RAID1E */ 1293 vol->v_mediasize = ((size * numdisks) / strip / 2) * 1294 strip; 1295 } 1296 vol->v_sectorsize = sectorsize; 1297 g_raid_start_volume(vol); 1298 1299 /* , and subdisks. */ 1300 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1301 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1302 sd = &vol->v_subdisks[pd->pd_disk_pos]; 1303 sd->sd_disk = disk; 1304 sd->sd_offset = 0; 1305 sd->sd_size = size; 1306 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 1307 if (sd->sd_disk->d_consumer != NULL) { 1308 g_raid_change_disk_state(disk, 1309 G_RAID_DISK_S_ACTIVE); 1310 g_raid_change_subdisk_state(sd, 1311 G_RAID_SUBDISK_S_ACTIVE); 1312 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 1313 G_RAID_EVENT_SUBDISK); 1314 } else { 1315 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1316 } 1317 } 1318 1319 /* Write metadata based on created entities. */ 1320 G_RAID_DEBUG1(0, sc, "Array started."); 1321 g_raid_md_write_sii(md, NULL, NULL, NULL); 1322 1323 /* Pickup any STALE/SPARE disks to refill array if needed. */ 1324 g_raid_md_sii_refill(sc); 1325 1326 g_raid_event_send(vol, G_RAID_VOLUME_E_START, 1327 G_RAID_EVENT_VOLUME); 1328 return (0); 1329 } 1330 if (strcmp(verb, "delete") == 0) { 1331 1332 /* Check if some volume is still open. */ 1333 force = gctl_get_paraml(req, "force", sizeof(*force)); 1334 if (force != NULL && *force == 0 && 1335 g_raid_nopens(sc) != 0) { 1336 gctl_error(req, "Some volume is still open."); 1337 return (-4); 1338 } 1339 1340 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1341 if (disk->d_consumer) 1342 sii_meta_erase(disk->d_consumer); 1343 } 1344 g_raid_destroy_node(sc, 0); 1345 return (0); 1346 } 1347 if (strcmp(verb, "remove") == 0 || 1348 strcmp(verb, "fail") == 0) { 1349 if (*nargs < 2) { 1350 gctl_error(req, "Invalid number of arguments."); 1351 return (-1); 1352 } 1353 for (i = 1; i < *nargs; i++) { 1354 snprintf(arg, sizeof(arg), "arg%d", i); 1355 diskname = gctl_get_asciiparam(req, arg); 1356 if (diskname == NULL) { 1357 gctl_error(req, "No disk name (%s).", arg); 1358 error = -2; 1359 break; 1360 } 1361 if (strncmp(diskname, "/dev/", 5) == 0) 1362 diskname += 5; 1363 1364 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1365 if (disk->d_consumer != NULL && 1366 disk->d_consumer->provider != NULL && 1367 strcmp(disk->d_consumer->provider->name, 1368 diskname) == 0) 1369 break; 1370 } 1371 if (disk == NULL) { 1372 gctl_error(req, "Disk '%s' not found.", 1373 diskname); 1374 error = -3; 1375 break; 1376 } 1377 1378 if (strcmp(verb, "fail") == 0) { 1379 g_raid_md_fail_disk_sii(md, NULL, disk); 1380 continue; 1381 } 1382 1383 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1384 1385 /* Erase metadata on deleting disk. */ 1386 sii_meta_erase(disk->d_consumer); 1387 1388 /* If disk was assigned, just update statuses. */ 1389 if (pd->pd_disk_pos >= 0) { 1390 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1391 g_raid_kill_consumer(sc, disk->d_consumer); 1392 disk->d_consumer = NULL; 1393 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 1394 g_raid_change_subdisk_state(sd, 1395 G_RAID_SUBDISK_S_NONE); 1396 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED, 1397 G_RAID_EVENT_SUBDISK); 1398 } 1399 } else { 1400 /* Otherwise -- delete. */ 1401 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1402 g_raid_destroy_disk(disk); 1403 } 1404 } 1405 1406 /* Write updated metadata to remaining disks. */ 1407 g_raid_md_write_sii(md, NULL, NULL, NULL); 1408 1409 /* Check if anything left except placeholders. */ 1410 if (g_raid_ndisks(sc, -1) == 1411 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1412 g_raid_destroy_node(sc, 0); 1413 else 1414 g_raid_md_sii_refill(sc); 1415 return (error); 1416 } 1417 if (strcmp(verb, "insert") == 0) { 1418 if (*nargs < 2) { 1419 gctl_error(req, "Invalid number of arguments."); 1420 return (-1); 1421 } 1422 update = 0; 1423 for (i = 1; i < *nargs; i++) { 1424 /* Get disk name. */ 1425 snprintf(arg, sizeof(arg), "arg%d", i); 1426 diskname = gctl_get_asciiparam(req, arg); 1427 if (diskname == NULL) { 1428 gctl_error(req, "No disk name (%s).", arg); 1429 error = -3; 1430 break; 1431 } 1432 1433 /* Try to find provider with specified name. */ 1434 g_topology_lock(); 1435 cp = g_raid_open_consumer(sc, diskname); 1436 if (cp == NULL) { 1437 gctl_error(req, "Can't open disk '%s'.", 1438 diskname); 1439 g_topology_unlock(); 1440 error = -4; 1441 break; 1442 } 1443 pp = cp->provider; 1444 1445 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1446 pd->pd_disk_pos = -3; 1447 pd->pd_disk_size = pp->mediasize; 1448 1449 disk = g_raid_create_disk(sc); 1450 disk->d_consumer = cp; 1451 disk->d_md_data = (void *)pd; 1452 cp->private = disk; 1453 g_topology_unlock(); 1454 1455 /* Read kernel dumping information. */ 1456 disk->d_kd.offset = 0; 1457 disk->d_kd.length = OFF_MAX; 1458 len = sizeof(disk->d_kd); 1459 g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd); 1460 if (disk->d_kd.di.dumper == NULL) 1461 G_RAID_DEBUG1(2, sc, 1462 "Dumping not supported by %s.", 1463 cp->provider->name); 1464 1465 /* Welcome the "new" disk. */ 1466 update += g_raid_md_sii_start_disk(disk); 1467 if (disk->d_state == G_RAID_DISK_S_SPARE) { 1468 sii_meta_write_spare(cp); 1469 g_raid_destroy_disk(disk); 1470 } else if (disk->d_state != G_RAID_DISK_S_ACTIVE) { 1471 gctl_error(req, "Disk '%s' doesn't fit.", 1472 diskname); 1473 g_raid_destroy_disk(disk); 1474 error = -8; 1475 break; 1476 } 1477 } 1478 1479 /* Write new metadata if we changed something. */ 1480 if (update) 1481 g_raid_md_write_sii(md, NULL, NULL, NULL); 1482 return (error); 1483 } 1484 gctl_error(req, "Command '%s' is not supported.", verb); 1485 return (-100); 1486 } 1487 1488 static int 1489 g_raid_md_write_sii(struct g_raid_md_object *md, struct g_raid_volume *tvol, 1490 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1491 { 1492 struct g_raid_softc *sc; 1493 struct g_raid_volume *vol; 1494 struct g_raid_subdisk *sd; 1495 struct g_raid_disk *disk; 1496 struct g_raid_md_sii_object *mdi; 1497 struct g_raid_md_sii_perdisk *pd; 1498 struct sii_raid_conf *meta; 1499 int i; 1500 1501 sc = md->mdo_softc; 1502 mdi = (struct g_raid_md_sii_object *)md; 1503 1504 if (sc->sc_stopping == G_RAID_DESTROY_HARD) 1505 return (0); 1506 1507 /* Bump generation. Newly written metadata may differ from previous. */ 1508 mdi->mdio_generation++; 1509 1510 /* There is only one volume. */ 1511 vol = TAILQ_FIRST(&sc->sc_volumes); 1512 1513 /* Fill global fields. */ 1514 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO); 1515 if (mdi->mdio_meta) 1516 memcpy(meta, mdi->mdio_meta, sizeof(*meta)); 1517 meta->total_sectors = vol->v_mediasize / vol->v_sectorsize; 1518 meta->vendor_id = 0x1095; 1519 meta->version_minor = 0; 1520 meta->version_major = 2; 1521 memcpy(&meta->timestamp, &mdi->mdio_timestamp, 6); 1522 meta->strip_sectors = vol->v_strip_size / vol->v_sectorsize; 1523 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0) { 1524 meta->type = SII_T_RAID0; 1525 meta->raid0_disks = vol->v_disks_count; 1526 meta->raid1_disks = 0xff; 1527 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) { 1528 meta->type = SII_T_RAID1; 1529 meta->raid0_disks = 0xff; 1530 meta->raid1_disks = vol->v_disks_count; 1531 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1532 meta->type = SII_T_RAID01; 1533 meta->raid0_disks = vol->v_disks_count / 2; 1534 meta->raid1_disks = 2; 1535 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT || 1536 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) { 1537 meta->type = SII_T_JBOD; 1538 meta->raid0_disks = vol->v_disks_count; 1539 meta->raid1_disks = 0xff; 1540 } else { 1541 meta->type = SII_T_RAID5; 1542 meta->raid0_disks = vol->v_disks_count; 1543 meta->raid1_disks = 0xff; 1544 } 1545 meta->generation = mdi->mdio_generation; 1546 meta->raid_status = vol->v_dirty ? SII_S_ONLINE : SII_S_AVAILABLE; 1547 for (i = 0; i < vol->v_disks_count; i++) { 1548 sd = &vol->v_subdisks[i]; 1549 if (sd->sd_state == G_RAID_SUBDISK_S_STALE || 1550 sd->sd_state == G_RAID_SUBDISK_S_RESYNC) 1551 meta->raid_status = SII_S_ONLINE; 1552 } 1553 meta->raid_location = mdi->mdio_location; 1554 sii_meta_put_name(meta, vol->v_name); 1555 1556 /* We are done. Print meta data and store them to disks. */ 1557 if (mdi->mdio_meta != NULL) 1558 free(mdi->mdio_meta, M_MD_SII); 1559 mdi->mdio_meta = meta; 1560 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1561 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1562 if (disk->d_state != G_RAID_DISK_S_ACTIVE) 1563 continue; 1564 if (pd->pd_meta != NULL) { 1565 free(pd->pd_meta, M_MD_SII); 1566 pd->pd_meta = NULL; 1567 } 1568 pd->pd_meta = sii_meta_copy(meta); 1569 if ((sd = TAILQ_FIRST(&disk->d_subdisks)) != NULL) { 1570 if (sd->sd_state < G_RAID_SUBDISK_S_NEW) 1571 pd->pd_meta->disk_status = SII_S_DROPPED; 1572 else if (sd->sd_state < G_RAID_SUBDISK_S_STALE) { 1573 pd->pd_meta->disk_status = SII_S_REBUILD; 1574 pd->pd_meta->rebuild_lba = 1575 sd->sd_rebuild_pos / vol->v_sectorsize; 1576 } else 1577 pd->pd_meta->disk_status = SII_S_CURRENT; 1578 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) { 1579 pd->pd_meta->disk_number = sd->sd_pos; 1580 pd->pd_meta->raid0_ident = 0xff; 1581 pd->pd_meta->raid1_ident = 0; 1582 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1583 pd->pd_meta->disk_number = sd->sd_pos / meta->raid1_disks; 1584 pd->pd_meta->raid0_ident = sd->sd_pos % meta->raid1_disks; 1585 pd->pd_meta->raid1_ident = sd->sd_pos / meta->raid1_disks; 1586 } else { 1587 pd->pd_meta->disk_number = sd->sd_pos; 1588 pd->pd_meta->raid0_ident = 0; 1589 pd->pd_meta->raid1_ident = 0xff; 1590 } 1591 } 1592 G_RAID_DEBUG(1, "Writing SiI metadata to %s", 1593 g_raid_get_diskname(disk)); 1594 g_raid_md_sii_print(pd->pd_meta); 1595 sii_meta_write(disk->d_consumer, pd->pd_meta); 1596 } 1597 return (0); 1598 } 1599 1600 static int 1601 g_raid_md_fail_disk_sii(struct g_raid_md_object *md, 1602 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1603 { 1604 struct g_raid_softc *sc; 1605 struct g_raid_md_sii_perdisk *pd; 1606 struct g_raid_subdisk *sd; 1607 1608 sc = md->mdo_softc; 1609 pd = (struct g_raid_md_sii_perdisk *)tdisk->d_md_data; 1610 1611 /* We can't fail disk that is not a part of array now. */ 1612 if (pd->pd_disk_pos < 0) 1613 return (-1); 1614 1615 /* 1616 * Mark disk as failed in metadata and try to write that metadata 1617 * to the disk itself to prevent it's later resurrection as STALE. 1618 */ 1619 if (tdisk->d_consumer) { 1620 if (pd->pd_meta) { 1621 pd->pd_meta->disk_status = SII_S_REMOVED; 1622 sii_meta_write(tdisk->d_consumer, pd->pd_meta); 1623 } else 1624 sii_meta_erase(tdisk->d_consumer); 1625 } 1626 1627 /* Change states. */ 1628 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED); 1629 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) { 1630 g_raid_change_subdisk_state(sd, 1631 G_RAID_SUBDISK_S_FAILED); 1632 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED, 1633 G_RAID_EVENT_SUBDISK); 1634 } 1635 1636 /* Write updated metadata to remaining disks. */ 1637 g_raid_md_write_sii(md, NULL, NULL, tdisk); 1638 1639 /* Check if anything left except placeholders. */ 1640 if (g_raid_ndisks(sc, -1) == 1641 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1642 g_raid_destroy_node(sc, 0); 1643 else 1644 g_raid_md_sii_refill(sc); 1645 return (0); 1646 } 1647 1648 static int 1649 g_raid_md_free_disk_sii(struct g_raid_md_object *md, 1650 struct g_raid_disk *disk) 1651 { 1652 struct g_raid_md_sii_perdisk *pd; 1653 1654 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1655 if (pd->pd_meta != NULL) { 1656 free(pd->pd_meta, M_MD_SII); 1657 pd->pd_meta = NULL; 1658 } 1659 free(pd, M_MD_SII); 1660 disk->d_md_data = NULL; 1661 return (0); 1662 } 1663 1664 static int 1665 g_raid_md_free_sii(struct g_raid_md_object *md) 1666 { 1667 struct g_raid_md_sii_object *mdi; 1668 1669 mdi = (struct g_raid_md_sii_object *)md; 1670 if (!mdi->mdio_started) { 1671 mdi->mdio_started = 0; 1672 callout_stop(&mdi->mdio_start_co); 1673 G_RAID_DEBUG1(1, md->mdo_softc, 1674 "root_mount_rel %p", mdi->mdio_rootmount); 1675 root_mount_rel(mdi->mdio_rootmount); 1676 mdi->mdio_rootmount = NULL; 1677 } 1678 if (mdi->mdio_meta != NULL) { 1679 free(mdi->mdio_meta, M_MD_SII); 1680 mdi->mdio_meta = NULL; 1681 } 1682 return (0); 1683 } 1684 1685 G_RAID_MD_DECLARE(g_raid_md_sii);
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