md_sii.c revision 235874
1/*- 2 * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org> 3 * Copyright (c) 2000 - 2008 S��ren Schmidt <sos@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: stable/9/sys/geom/raid/md_sii.c 235874 2012-05-24 02:34:03Z mav $"); 30 31#include <sys/param.h> 32#include <sys/bio.h> 33#include <sys/endian.h> 34#include <sys/kernel.h> 35#include <sys/kobj.h> 36#include <sys/limits.h> 37#include <sys/lock.h> 38#include <sys/malloc.h> 39#include <sys/mutex.h> 40#include <sys/systm.h> 41#include <sys/taskqueue.h> 42#include <geom/geom.h> 43#include "geom/raid/g_raid.h" 44#include "g_raid_md_if.h" 45 46static MALLOC_DEFINE(M_MD_SII, "md_sii_data", "GEOM_RAID SiI metadata"); 47 48struct sii_raid_conf { 49 uint16_t ata_params_00_53[54]; 50 uint64_t total_sectors; /* 54 - 57 */ 51 uint16_t ata_params_58_81[72]; 52 uint16_t product_id; /* 130 */ 53 uint16_t vendor_id; /* 131 */ 54 uint16_t version_minor; /* 132 */ 55 uint16_t version_major; /* 133 */ 56 uint8_t timestamp[6]; /* 134 - 136 */ 57 uint16_t strip_sectors; /* 137 */ 58 uint16_t dummy_2; 59 uint8_t disk_number; /* 139 */ 60 uint8_t type; 61#define SII_T_RAID0 0x00 62#define SII_T_RAID1 0x01 63#define SII_T_RAID01 0x02 64#define SII_T_SPARE 0x03 65#define SII_T_CONCAT 0x04 66#define SII_T_RAID5 0x10 67#define SII_T_RESERVED 0xfd 68#define SII_T_JBOD 0xff 69 70 uint8_t raid0_disks; /* 140 */ 71 uint8_t raid0_ident; 72 uint8_t raid1_disks; /* 141 */ 73 uint8_t raid1_ident; 74 uint64_t rebuild_lba; /* 142 - 145 */ 75 uint32_t generation; /* 146 - 147 */ 76 uint8_t disk_status; /* 148 */ 77#define SII_S_CURRENT 0x01 78#define SII_S_REBUILD 0x02 79#define SII_S_DROPPED 0x03 80#define SII_S_REMOVED 0x04 81 82 uint8_t raid_status; 83#define SII_S_ONLINE 0x01 84#define SII_S_AVAILABLE 0x02 85 86 uint8_t raid_location; /* 149 */ 87 uint8_t disk_location; 88 uint8_t auto_rebuild; /* 150 */ 89#define SII_R_REBUILD 0x00 90#define SII_R_NOREBUILD 0xff 91 92 uint8_t dummy_3; 93 uint8_t name[16]; /* 151 - 158 */ 94 uint16_t checksum; /* 159 */ 95 uint16_t ata_params_160_255[96]; 96} __packed; 97 98struct g_raid_md_sii_perdisk { 99 struct sii_raid_conf *pd_meta; 100 int pd_disk_pos; 101 off_t pd_disk_size; 102}; 103 104struct g_raid_md_sii_object { 105 struct g_raid_md_object mdio_base; 106 uint8_t mdio_timestamp[6]; 107 uint8_t mdio_location; 108 uint32_t mdio_generation; 109 struct sii_raid_conf *mdio_meta; 110 struct callout mdio_start_co; /* STARTING state timer. */ 111 int mdio_total_disks; 112 int mdio_disks_present; 113 int mdio_started; 114 int mdio_incomplete; 115 struct root_hold_token *mdio_rootmount; /* Root mount delay token. */ 116}; 117 118static g_raid_md_create_t g_raid_md_create_sii; 119static g_raid_md_taste_t g_raid_md_taste_sii; 120static g_raid_md_event_t g_raid_md_event_sii; 121static g_raid_md_ctl_t g_raid_md_ctl_sii; 122static g_raid_md_write_t g_raid_md_write_sii; 123static g_raid_md_fail_disk_t g_raid_md_fail_disk_sii; 124static g_raid_md_free_disk_t g_raid_md_free_disk_sii; 125static g_raid_md_free_t g_raid_md_free_sii; 126 127static kobj_method_t g_raid_md_sii_methods[] = { 128 KOBJMETHOD(g_raid_md_create, g_raid_md_create_sii), 129 KOBJMETHOD(g_raid_md_taste, g_raid_md_taste_sii), 130 KOBJMETHOD(g_raid_md_event, g_raid_md_event_sii), 131 KOBJMETHOD(g_raid_md_ctl, g_raid_md_ctl_sii), 132 KOBJMETHOD(g_raid_md_write, g_raid_md_write_sii), 133 KOBJMETHOD(g_raid_md_fail_disk, g_raid_md_fail_disk_sii), 134 KOBJMETHOD(g_raid_md_free_disk, g_raid_md_free_disk_sii), 135 KOBJMETHOD(g_raid_md_free, g_raid_md_free_sii), 136 { 0, 0 } 137}; 138 139static struct g_raid_md_class g_raid_md_sii_class = { 140 "SiI", 141 g_raid_md_sii_methods, 142 sizeof(struct g_raid_md_sii_object), 143 .mdc_priority = 100 144}; 145 146static void 147g_raid_md_sii_print(struct sii_raid_conf *meta) 148{ 149 150 if (g_raid_debug < 1) 151 return; 152 153 printf("********* ATA SiI RAID Metadata *********\n"); 154 printf("total_sectors %llu\n", 155 (long long unsigned)meta->total_sectors); 156 printf("product_id 0x%04x\n", meta->product_id); 157 printf("vendor_id 0x%04x\n", meta->vendor_id); 158 printf("version_minor 0x%04x\n", meta->version_minor); 159 printf("version_major 0x%04x\n", meta->version_major); 160 printf("timestamp 0x%02x%02x%02x%02x%02x%02x\n", 161 meta->timestamp[5], meta->timestamp[4], meta->timestamp[3], 162 meta->timestamp[2], meta->timestamp[1], meta->timestamp[0]); 163 printf("strip_sectors %d\n", meta->strip_sectors); 164 printf("disk_number %d\n", meta->disk_number); 165 printf("type 0x%02x\n", meta->type); 166 printf("raid0_disks %d\n", meta->raid0_disks); 167 printf("raid0_ident %d\n", meta->raid0_ident); 168 printf("raid1_disks %d\n", meta->raid1_disks); 169 printf("raid1_ident %d\n", meta->raid1_ident); 170 printf("rebuild_lba %llu\n", 171 (long long unsigned)meta->rebuild_lba); 172 printf("generation %d\n", meta->generation); 173 printf("disk_status %d\n", meta->disk_status); 174 printf("raid_status %d\n", meta->raid_status); 175 printf("raid_location %d\n", meta->raid_location); 176 printf("disk_location %d\n", meta->disk_location); 177 printf("auto_rebuild %d\n", meta->auto_rebuild); 178 printf("name <%.16s>\n", meta->name); 179 printf("checksum 0x%04x\n", meta->checksum); 180 printf("=================================================\n"); 181} 182 183static struct sii_raid_conf * 184sii_meta_copy(struct sii_raid_conf *meta) 185{ 186 struct sii_raid_conf *nmeta; 187 188 nmeta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK); 189 memcpy(nmeta, meta, sizeof(*meta)); 190 return (nmeta); 191} 192 193static int 194sii_meta_total_disks(struct sii_raid_conf *meta) 195{ 196 197 switch (meta->type) { 198 case SII_T_RAID0: 199 case SII_T_RAID5: 200 case SII_T_CONCAT: 201 return (meta->raid0_disks); 202 case SII_T_RAID1: 203 return (meta->raid1_disks); 204 case SII_T_RAID01: 205 return (meta->raid0_disks * meta->raid1_disks); 206 case SII_T_SPARE: 207 case SII_T_JBOD: 208 return (1); 209 } 210 return (0); 211} 212 213static int 214sii_meta_disk_pos(struct sii_raid_conf *meta, struct sii_raid_conf *pdmeta) 215{ 216 217 if (pdmeta->type == SII_T_SPARE) 218 return (-3); 219 220 if (memcmp(&meta->timestamp, &pdmeta->timestamp, 6) != 0) 221 return (-1); 222 223 switch (pdmeta->type) { 224 case SII_T_RAID0: 225 case SII_T_RAID1: 226 case SII_T_RAID5: 227 case SII_T_CONCAT: 228 return (pdmeta->disk_number); 229 case SII_T_RAID01: 230 return (pdmeta->raid1_ident * pdmeta->raid1_disks + 231 pdmeta->raid0_ident); 232 case SII_T_JBOD: 233 return (0); 234 } 235 return (-1); 236} 237 238static void 239sii_meta_get_name(struct sii_raid_conf *meta, char *buf) 240{ 241 int i; 242 243 strncpy(buf, meta->name, 16); 244 buf[16] = 0; 245 for (i = 15; i >= 0; i--) { 246 if (buf[i] > 0x20) 247 break; 248 buf[i] = 0; 249 } 250} 251 252static void 253sii_meta_put_name(struct sii_raid_conf *meta, char *buf) 254{ 255 256 memset(meta->name, 0x20, 16); 257 memcpy(meta->name, buf, MIN(strlen(buf), 16)); 258} 259 260static struct sii_raid_conf * 261sii_meta_read(struct g_consumer *cp) 262{ 263 struct g_provider *pp; 264 struct sii_raid_conf *meta; 265 char *buf; 266 int error, i; 267 uint16_t checksum, *ptr; 268 269 pp = cp->provider; 270 271 /* Read the anchor sector. */ 272 buf = g_read_data(cp, 273 pp->mediasize - pp->sectorsize, pp->sectorsize, &error); 274 if (buf == NULL) { 275 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).", 276 pp->name, error); 277 return (NULL); 278 } 279 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK); 280 memcpy(meta, buf, min(sizeof(*meta), pp->sectorsize)); 281 g_free(buf); 282 283 /* Check vendor ID. */ 284 if (meta->vendor_id != 0x1095) { 285 G_RAID_DEBUG(1, "SiI vendor ID check failed on %s (0x%04x)", 286 pp->name, meta->vendor_id); 287 free(meta, M_MD_SII); 288 return (NULL); 289 } 290 291 /* Check metadata major version. */ 292 if (meta->version_major != 2) { 293 G_RAID_DEBUG(1, "SiI version check failed on %s (%d.%d)", 294 pp->name, meta->version_major, meta->version_minor); 295 free(meta, M_MD_SII); 296 return (NULL); 297 } 298 299 /* Check metadata checksum. */ 300 for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i <= 159; i++) 301 checksum += *ptr++; 302 if (checksum != 0) { 303 G_RAID_DEBUG(1, "SiI checksum check failed on %s", pp->name); 304 free(meta, M_MD_SII); 305 return (NULL); 306 } 307 308 /* Check raid type. */ 309 if (meta->type != SII_T_RAID0 && meta->type != SII_T_RAID1 && 310 meta->type != SII_T_RAID01 && meta->type != SII_T_SPARE && 311 meta->type != SII_T_RAID5 && meta->type != SII_T_CONCAT && 312 meta->type != SII_T_JBOD) { 313 G_RAID_DEBUG(1, "SiI unknown RAID level on %s (0x%02x)", 314 pp->name, meta->type); 315 free(meta, M_MD_SII); 316 return (NULL); 317 } 318 319 return (meta); 320} 321 322static int 323sii_meta_write(struct g_consumer *cp, struct sii_raid_conf *meta) 324{ 325 struct g_provider *pp; 326 char *buf; 327 int error, i; 328 uint16_t checksum, *ptr; 329 330 pp = cp->provider; 331 332 /* Recalculate checksum for case if metadata were changed. */ 333 meta->checksum = 0; 334 for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i < 159; i++) 335 checksum += *ptr++; 336 meta->checksum -= checksum; 337 338 /* Create and fill buffer. */ 339 buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO); 340 memcpy(buf, meta, sizeof(*meta)); 341 342 /* Write 4 copies of metadata. */ 343 for (i = 0; i < 4; i++) { 344 error = g_write_data(cp, 345 pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)), 346 buf, pp->sectorsize); 347 if (error != 0) { 348 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).", 349 pp->name, error); 350 break; 351 } 352 } 353 354 free(buf, M_MD_SII); 355 return (error); 356} 357 358static int 359sii_meta_erase(struct g_consumer *cp) 360{ 361 struct g_provider *pp; 362 char *buf; 363 int error, i; 364 365 pp = cp->provider; 366 buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO); 367 /* Write 4 copies of metadata. */ 368 for (i = 0; i < 4; i++) { 369 error = g_write_data(cp, 370 pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)), 371 buf, pp->sectorsize); 372 if (error != 0) { 373 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).", 374 pp->name, error); 375 } 376 } 377 free(buf, M_MD_SII); 378 return (error); 379} 380 381static int 382sii_meta_write_spare(struct g_consumer *cp) 383{ 384 struct sii_raid_conf *meta; 385 int error; 386 387 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO); 388 meta->total_sectors = cp->provider->mediasize / 389 cp->provider->sectorsize - 0x800; 390 meta->vendor_id = 0x1095; 391 meta->version_minor = 0; 392 meta->version_major = 2; 393 meta->timestamp[0] = arc4random(); 394 meta->timestamp[1] = arc4random(); 395 meta->timestamp[2] = arc4random(); 396 meta->timestamp[3] = arc4random(); 397 meta->timestamp[4] = arc4random(); 398 meta->timestamp[5] = arc4random(); 399 meta->type = SII_T_SPARE; 400 meta->generation = 1; 401 meta->raid1_ident = 0xff; 402 meta->raid_location = arc4random(); 403 error = sii_meta_write(cp, meta); 404 free(meta, M_MD_SII); 405 return (error); 406} 407 408static struct g_raid_disk * 409g_raid_md_sii_get_disk(struct g_raid_softc *sc, int id) 410{ 411 struct g_raid_disk *disk; 412 struct g_raid_md_sii_perdisk *pd; 413 414 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 415 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 416 if (pd->pd_disk_pos == id) 417 break; 418 } 419 return (disk); 420} 421 422static int 423g_raid_md_sii_supported(int level, int qual, int disks, int force) 424{ 425 426 if (disks > 8) 427 return (0); 428 switch (level) { 429 case G_RAID_VOLUME_RL_RAID0: 430 if (disks < 1) 431 return (0); 432 if (!force && (disks < 2 || disks > 6)) 433 return (0); 434 break; 435 case G_RAID_VOLUME_RL_RAID1: 436 if (disks < 1) 437 return (0); 438 if (!force && (disks != 2)) 439 return (0); 440 break; 441 case G_RAID_VOLUME_RL_RAID1E: 442 if (disks < 2) 443 return (0); 444 if (disks % 2 != 0) 445 return (0); 446 if (!force && (disks < 4)) 447 return (0); 448 break; 449 case G_RAID_VOLUME_RL_SINGLE: 450 if (disks != 1) 451 return (0); 452 break; 453 case G_RAID_VOLUME_RL_CONCAT: 454 if (disks < 2) 455 return (0); 456 break; 457 case G_RAID_VOLUME_RL_RAID5: 458 if (disks < 3) 459 return (0); 460 if (qual != G_RAID_VOLUME_RLQ_R5LS) 461 return (0); 462 break; 463 default: 464 return (0); 465 } 466 if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE) 467 return (0); 468 return (1); 469} 470 471static int 472g_raid_md_sii_start_disk(struct g_raid_disk *disk) 473{ 474 struct g_raid_softc *sc; 475 struct g_raid_subdisk *sd, *tmpsd; 476 struct g_raid_disk *olddisk, *tmpdisk; 477 struct g_raid_md_object *md; 478 struct g_raid_md_sii_object *mdi; 479 struct g_raid_md_sii_perdisk *pd, *oldpd; 480 struct sii_raid_conf *meta; 481 int disk_pos, resurrection = 0; 482 483 sc = disk->d_softc; 484 md = sc->sc_md; 485 mdi = (struct g_raid_md_sii_object *)md; 486 meta = mdi->mdio_meta; 487 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 488 olddisk = NULL; 489 490 /* Find disk position in metadata by it's serial. */ 491 if (pd->pd_meta != NULL) 492 disk_pos = sii_meta_disk_pos(meta, pd->pd_meta); 493 else 494 disk_pos = -3; 495 if (disk_pos < 0) { 496 G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk"); 497 /* If we are in the start process, that's all for now. */ 498 if (!mdi->mdio_started) 499 goto nofit; 500 /* 501 * If we have already started - try to get use of the disk. 502 * Try to replace OFFLINE disks first, then FAILED. 503 */ 504 TAILQ_FOREACH(tmpdisk, &sc->sc_disks, d_next) { 505 if (tmpdisk->d_state != G_RAID_DISK_S_OFFLINE && 506 tmpdisk->d_state != G_RAID_DISK_S_FAILED) 507 continue; 508 /* Make sure this disk is big enough. */ 509 TAILQ_FOREACH(sd, &tmpdisk->d_subdisks, sd_next) { 510 if (sd->sd_offset + sd->sd_size + 512 > 511 pd->pd_disk_size) { 512 G_RAID_DEBUG1(1, sc, 513 "Disk too small (%ju < %ju)", 514 pd->pd_disk_size, 515 sd->sd_offset + sd->sd_size + 512); 516 break; 517 } 518 } 519 if (sd != NULL) 520 continue; 521 if (tmpdisk->d_state == G_RAID_DISK_S_OFFLINE) { 522 olddisk = tmpdisk; 523 break; 524 } else if (olddisk == NULL) 525 olddisk = tmpdisk; 526 } 527 if (olddisk == NULL) { 528nofit: 529 if (disk_pos == -3 || pd->pd_disk_pos == -3) { 530 g_raid_change_disk_state(disk, 531 G_RAID_DISK_S_SPARE); 532 return (1); 533 } else { 534 g_raid_change_disk_state(disk, 535 G_RAID_DISK_S_STALE); 536 return (0); 537 } 538 } 539 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data; 540 disk_pos = oldpd->pd_disk_pos; 541 resurrection = 1; 542 } 543 544 if (olddisk == NULL) { 545 /* Find placeholder by position. */ 546 olddisk = g_raid_md_sii_get_disk(sc, disk_pos); 547 if (olddisk == NULL) 548 panic("No disk at position %d!", disk_pos); 549 if (olddisk->d_state != G_RAID_DISK_S_OFFLINE) { 550 G_RAID_DEBUG1(1, sc, "More then one disk for pos %d", 551 disk_pos); 552 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE); 553 return (0); 554 } 555 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data; 556 } 557 558 /* Replace failed disk or placeholder with new disk. */ 559 TAILQ_FOREACH_SAFE(sd, &olddisk->d_subdisks, sd_next, tmpsd) { 560 TAILQ_REMOVE(&olddisk->d_subdisks, sd, sd_next); 561 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 562 sd->sd_disk = disk; 563 } 564 oldpd->pd_disk_pos = -2; 565 pd->pd_disk_pos = disk_pos; 566 567 /* If it was placeholder -- destroy it. */ 568 if (olddisk->d_state == G_RAID_DISK_S_OFFLINE) { 569 g_raid_destroy_disk(olddisk); 570 } else { 571 /* Otherwise, make it STALE_FAILED. */ 572 g_raid_change_disk_state(olddisk, G_RAID_DISK_S_STALE_FAILED); 573 } 574 575 /* Welcome the new disk. */ 576 if (resurrection) 577 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 578 else if (pd->pd_meta->disk_status == SII_S_CURRENT || 579 pd->pd_meta->disk_status == SII_S_REBUILD) 580 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 581 else 582 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED); 583 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 584 585 /* 586 * Different disks may have different sizes, 587 * in concat mode. Update from real disk size. 588 */ 589 if (meta->type == SII_T_CONCAT || meta->type == SII_T_JBOD) 590 sd->sd_size = pd->pd_disk_size - 0x800 * 512; 591 592 if (resurrection) { 593 /* New or ex-spare disk. */ 594 g_raid_change_subdisk_state(sd, 595 G_RAID_SUBDISK_S_NEW); 596 } else if (pd->pd_meta->disk_status == SII_S_REBUILD) { 597 /* Rebuilding disk. */ 598 g_raid_change_subdisk_state(sd, 599 G_RAID_SUBDISK_S_REBUILD); 600 if (pd->pd_meta->generation == meta->generation) 601 sd->sd_rebuild_pos = pd->pd_meta->rebuild_lba * 512; 602 else 603 sd->sd_rebuild_pos = 0; 604 } else if (pd->pd_meta->disk_status == SII_S_CURRENT) { 605 if (pd->pd_meta->raid_status == SII_S_ONLINE || 606 pd->pd_meta->generation != meta->generation) { 607 /* Dirty or resyncing disk. */ 608 g_raid_change_subdisk_state(sd, 609 G_RAID_SUBDISK_S_STALE); 610 } else { 611 /* Up to date disk. */ 612 g_raid_change_subdisk_state(sd, 613 G_RAID_SUBDISK_S_ACTIVE); 614 } 615 } else { 616 g_raid_change_subdisk_state(sd, 617 G_RAID_SUBDISK_S_FAILED); 618 } 619 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 620 G_RAID_EVENT_SUBDISK); 621 } 622 623 /* Update status of our need for spare. */ 624 if (mdi->mdio_started) { 625 mdi->mdio_incomplete = 626 (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) < 627 mdi->mdio_total_disks); 628 } 629 630 return (resurrection); 631} 632 633static void 634g_disk_md_sii_retaste(void *arg, int pending) 635{ 636 637 G_RAID_DEBUG(1, "Array is not complete, trying to retaste."); 638 g_retaste(&g_raid_class); 639 free(arg, M_MD_SII); 640} 641 642static void 643g_raid_md_sii_refill(struct g_raid_softc *sc) 644{ 645 struct g_raid_md_object *md; 646 struct g_raid_md_sii_object *mdi; 647 struct g_raid_disk *disk; 648 struct task *task; 649 int update, na; 650 651 md = sc->sc_md; 652 mdi = (struct g_raid_md_sii_object *)md; 653 update = 0; 654 do { 655 /* Make sure we miss anything. */ 656 na = g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE); 657 if (na == mdi->mdio_total_disks) 658 break; 659 660 G_RAID_DEBUG1(1, md->mdo_softc, 661 "Array is not complete (%d of %d), " 662 "trying to refill.", na, mdi->mdio_total_disks); 663 664 /* Try to get use some of STALE disks. */ 665 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 666 if (disk->d_state == G_RAID_DISK_S_STALE) { 667 update += g_raid_md_sii_start_disk(disk); 668 if (disk->d_state == G_RAID_DISK_S_ACTIVE) 669 break; 670 } 671 } 672 if (disk != NULL) 673 continue; 674 675 /* Try to get use some of SPARE disks. */ 676 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 677 if (disk->d_state == G_RAID_DISK_S_SPARE) { 678 update += g_raid_md_sii_start_disk(disk); 679 if (disk->d_state == G_RAID_DISK_S_ACTIVE) 680 break; 681 } 682 } 683 } while (disk != NULL); 684 685 /* Write new metadata if we changed something. */ 686 if (update) 687 g_raid_md_write_sii(md, NULL, NULL, NULL); 688 689 /* Update status of our need for spare. */ 690 mdi->mdio_incomplete = (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) < 691 mdi->mdio_total_disks); 692 693 /* Request retaste hoping to find spare. */ 694 if (mdi->mdio_incomplete) { 695 task = malloc(sizeof(struct task), 696 M_MD_SII, M_WAITOK | M_ZERO); 697 TASK_INIT(task, 0, g_disk_md_sii_retaste, task); 698 taskqueue_enqueue(taskqueue_swi, task); 699 } 700} 701 702static void 703g_raid_md_sii_start(struct g_raid_softc *sc) 704{ 705 struct g_raid_md_object *md; 706 struct g_raid_md_sii_object *mdi; 707 struct g_raid_md_sii_perdisk *pd; 708 struct sii_raid_conf *meta; 709 struct g_raid_volume *vol; 710 struct g_raid_subdisk *sd; 711 struct g_raid_disk *disk, *best; 712 off_t size; 713 int j, disk_pos; 714 uint32_t gendiff, bestgendiff; 715 char buf[17]; 716 717 md = sc->sc_md; 718 mdi = (struct g_raid_md_sii_object *)md; 719 meta = mdi->mdio_meta; 720 721 /* Create volumes and subdisks. */ 722 sii_meta_get_name(meta, buf); 723 vol = g_raid_create_volume(sc, buf, -1); 724 vol->v_mediasize = (off_t)meta->total_sectors * 512; 725 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 726 if (meta->type == SII_T_RAID0) { 727 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0; 728 size = vol->v_mediasize / mdi->mdio_total_disks; 729 } else if (meta->type == SII_T_RAID1) { 730 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1; 731 size = vol->v_mediasize; 732 } else if (meta->type == SII_T_RAID01) { 733 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E; 734 size = vol->v_mediasize / (mdi->mdio_total_disks / 2); 735 } else if (meta->type == SII_T_CONCAT) { 736 if (mdi->mdio_total_disks == 1) 737 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 738 else 739 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT; 740 size = 0; 741 } else if (meta->type == SII_T_RAID5) { 742 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5; 743 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LS; 744 size = vol->v_mediasize / (mdi->mdio_total_disks - 1); 745 } else if (meta->type == SII_T_JBOD) { 746 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 747 size = 0; 748 } else { 749 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN; 750 size = 0; 751 } 752 vol->v_strip_size = meta->strip_sectors * 512; //ZZZ 753 vol->v_disks_count = mdi->mdio_total_disks; 754 vol->v_sectorsize = 512; //ZZZ 755 for (j = 0; j < vol->v_disks_count; j++) { 756 sd = &vol->v_subdisks[j]; 757 sd->sd_offset = 0; 758 sd->sd_size = size; 759 } 760 g_raid_start_volume(vol); 761 762 /* Create disk placeholders to store data for later writing. */ 763 for (disk_pos = 0; disk_pos < mdi->mdio_total_disks; disk_pos++) { 764 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 765 pd->pd_disk_pos = disk_pos; 766 disk = g_raid_create_disk(sc); 767 disk->d_md_data = (void *)pd; 768 disk->d_state = G_RAID_DISK_S_OFFLINE; 769 sd = &vol->v_subdisks[disk_pos]; 770 sd->sd_disk = disk; 771 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 772 } 773 774 /* 775 * Make all disks found till the moment take their places 776 * in order of their generation numbers. 777 */ 778 do { 779 best = NULL; 780 bestgendiff = 0xffffffff; 781 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 782 if (disk->d_state != G_RAID_DISK_S_NONE) 783 continue; 784 pd = disk->d_md_data; 785 if (pd->pd_meta == NULL) 786 gendiff = 0xfffffffe; 787 else 788 gendiff = meta->generation - 789 pd->pd_meta->generation; 790 if (gendiff < bestgendiff) { 791 best = disk; 792 bestgendiff = gendiff; 793 } 794 } 795 if (best != NULL) 796 g_raid_md_sii_start_disk(best); 797 } while (best != NULL); 798 799 mdi->mdio_started = 1; 800 G_RAID_DEBUG1(0, sc, "Array started."); 801 g_raid_md_write_sii(md, NULL, NULL, NULL); 802 803 /* Pickup any STALE/SPARE disks to refill array if needed. */ 804 g_raid_md_sii_refill(sc); 805 806 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME); 807 808 callout_stop(&mdi->mdio_start_co); 809 G_RAID_DEBUG1(1, sc, "root_mount_rel %p", mdi->mdio_rootmount); 810 root_mount_rel(mdi->mdio_rootmount); 811 mdi->mdio_rootmount = NULL; 812} 813 814static void 815g_raid_md_sii_new_disk(struct g_raid_disk *disk) 816{ 817 struct g_raid_softc *sc; 818 struct g_raid_md_object *md; 819 struct g_raid_md_sii_object *mdi; 820 struct sii_raid_conf *pdmeta; 821 struct g_raid_md_sii_perdisk *pd; 822 823 sc = disk->d_softc; 824 md = sc->sc_md; 825 mdi = (struct g_raid_md_sii_object *)md; 826 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 827 pdmeta = pd->pd_meta; 828 829 if (mdi->mdio_started) { 830 if (g_raid_md_sii_start_disk(disk)) 831 g_raid_md_write_sii(md, NULL, NULL, NULL); 832 } else { 833 if (mdi->mdio_meta == NULL || 834 ((int32_t)(pdmeta->generation - mdi->mdio_generation)) > 0) { 835 G_RAID_DEBUG1(1, sc, "Newer disk"); 836 if (mdi->mdio_meta != NULL) 837 free(mdi->mdio_meta, M_MD_SII); 838 mdi->mdio_meta = sii_meta_copy(pdmeta); 839 mdi->mdio_generation = mdi->mdio_meta->generation; 840 mdi->mdio_total_disks = sii_meta_total_disks(pdmeta); 841 mdi->mdio_disks_present = 1; 842 } else if (pdmeta->generation == mdi->mdio_generation) { 843 mdi->mdio_disks_present++; 844 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)", 845 mdi->mdio_disks_present, 846 mdi->mdio_total_disks); 847 } else { 848 G_RAID_DEBUG1(1, sc, "Older disk"); 849 } 850 851 /* If we collected all needed disks - start array. */ 852 if (mdi->mdio_disks_present == mdi->mdio_total_disks) 853 g_raid_md_sii_start(sc); 854 } 855} 856 857static void 858g_raid_sii_go(void *arg) 859{ 860 struct g_raid_softc *sc; 861 struct g_raid_md_object *md; 862 struct g_raid_md_sii_object *mdi; 863 864 sc = arg; 865 md = sc->sc_md; 866 mdi = (struct g_raid_md_sii_object *)md; 867 if (!mdi->mdio_started) { 868 G_RAID_DEBUG1(0, sc, "Force array start due to timeout."); 869 g_raid_event_send(sc, G_RAID_NODE_E_START, 0); 870 } 871} 872 873static int 874g_raid_md_create_sii(struct g_raid_md_object *md, struct g_class *mp, 875 struct g_geom **gp) 876{ 877 struct g_raid_softc *sc; 878 struct g_raid_md_sii_object *mdi; 879 char name[32]; 880 881 mdi = (struct g_raid_md_sii_object *)md; 882 mdi->mdio_timestamp[5] = arc4random(); 883 mdi->mdio_timestamp[4] = arc4random(); 884 mdi->mdio_timestamp[3] = arc4random(); 885 mdi->mdio_timestamp[2] = arc4random(); 886 mdi->mdio_timestamp[1] = arc4random(); 887 mdi->mdio_timestamp[0] = arc4random(); 888 mdi->mdio_location = arc4random(); 889 mdi->mdio_generation = 0; 890 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x", 891 mdi->mdio_timestamp[5], mdi->mdio_timestamp[4], 892 mdi->mdio_timestamp[3], mdi->mdio_timestamp[2], 893 mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]); 894 sc = g_raid_create_node(mp, name, md); 895 if (sc == NULL) 896 return (G_RAID_MD_TASTE_FAIL); 897 md->mdo_softc = sc; 898 *gp = sc->sc_geom; 899 return (G_RAID_MD_TASTE_NEW); 900} 901 902static int 903g_raid_md_taste_sii(struct g_raid_md_object *md, struct g_class *mp, 904 struct g_consumer *cp, struct g_geom **gp) 905{ 906 struct g_consumer *rcp; 907 struct g_provider *pp; 908 struct g_raid_md_sii_object *mdi, *mdi1; 909 struct g_raid_softc *sc; 910 struct g_raid_disk *disk; 911 struct sii_raid_conf *meta; 912 struct g_raid_md_sii_perdisk *pd; 913 struct g_geom *geom; 914 int error, disk_pos, result, spare, len; 915 char name[32]; 916 uint16_t vendor; 917 918 G_RAID_DEBUG(1, "Tasting SiI on %s", cp->provider->name); 919 mdi = (struct g_raid_md_sii_object *)md; 920 pp = cp->provider; 921 922 /* Read metadata from device. */ 923 meta = NULL; 924 vendor = 0xffff; 925 if (g_access(cp, 1, 0, 0) != 0) 926 return (G_RAID_MD_TASTE_FAIL); 927 g_topology_unlock(); 928 len = 2; 929 if (pp->geom->rank == 1) 930 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor); 931 meta = sii_meta_read(cp); 932 g_topology_lock(); 933 g_access(cp, -1, 0, 0); 934 if (meta == NULL) { 935 if (g_raid_aggressive_spare) { 936 if (vendor == 0x1095) { 937 G_RAID_DEBUG(1, 938 "No SiI metadata, forcing spare."); 939 spare = 2; 940 goto search; 941 } else { 942 G_RAID_DEBUG(1, 943 "SiI vendor mismatch 0x%04x != 0x1095", 944 vendor); 945 } 946 } 947 return (G_RAID_MD_TASTE_FAIL); 948 } 949 950 /* Check this disk position in obtained metadata. */ 951 disk_pos = sii_meta_disk_pos(meta, meta); 952 if (disk_pos == -1) { 953 G_RAID_DEBUG(1, "SiI disk position not found"); 954 goto fail1; 955 } 956 957 /* Metadata valid. Print it. */ 958 g_raid_md_sii_print(meta); 959 G_RAID_DEBUG(1, "SiI disk position %d", disk_pos); 960 spare = (meta->type == SII_T_SPARE) ? 1 : 0; 961 962search: 963 /* Search for matching node. */ 964 sc = NULL; 965 mdi1 = NULL; 966 LIST_FOREACH(geom, &mp->geom, geom) { 967 sc = geom->softc; 968 if (sc == NULL) 969 continue; 970 if (sc->sc_stopping != 0) 971 continue; 972 if (sc->sc_md->mdo_class != md->mdo_class) 973 continue; 974 mdi1 = (struct g_raid_md_sii_object *)sc->sc_md; 975 if (spare) { 976 if (mdi1->mdio_incomplete) 977 break; 978 } else { 979 if (mdi1->mdio_location == meta->raid_location && 980 memcmp(&mdi1->mdio_timestamp, 981 &meta->timestamp, 6) == 0) 982 break; 983 } 984 } 985 986 /* Found matching node. */ 987 if (geom != NULL) { 988 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name); 989 result = G_RAID_MD_TASTE_EXISTING; 990 991 } else if (spare) { /* Not found needy node -- left for later. */ 992 G_RAID_DEBUG(1, "Spare is not needed at this time"); 993 goto fail1; 994 995 } else { /* Not found matching node -- create one. */ 996 result = G_RAID_MD_TASTE_NEW; 997 memcpy(&mdi->mdio_timestamp, &meta->timestamp, 6); 998 mdi->mdio_location = meta->raid_location; 999 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x", 1000 mdi->mdio_timestamp[5], mdi->mdio_timestamp[4], 1001 mdi->mdio_timestamp[3], mdi->mdio_timestamp[2], 1002 mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]); 1003 sc = g_raid_create_node(mp, name, md); 1004 md->mdo_softc = sc; 1005 geom = sc->sc_geom; 1006 callout_init(&mdi->mdio_start_co, 1); 1007 callout_reset(&mdi->mdio_start_co, g_raid_start_timeout * hz, 1008 g_raid_sii_go, sc); 1009 mdi->mdio_rootmount = root_mount_hold("GRAID-SiI"); 1010 G_RAID_DEBUG1(1, sc, "root_mount_hold %p", mdi->mdio_rootmount); 1011 } 1012 1013 rcp = g_new_consumer(geom); 1014 g_attach(rcp, pp); 1015 if (g_access(rcp, 1, 1, 1) != 0) 1016 ; //goto fail1; 1017 1018 g_topology_unlock(); 1019 sx_xlock(&sc->sc_lock); 1020 1021 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1022 pd->pd_meta = meta; 1023 if (spare == 2) { 1024 pd->pd_disk_pos = -3; 1025 } else { 1026 pd->pd_disk_pos = -1; 1027 } 1028 pd->pd_disk_size = pp->mediasize; 1029 disk = g_raid_create_disk(sc); 1030 disk->d_md_data = (void *)pd; 1031 disk->d_consumer = rcp; 1032 rcp->private = disk; 1033 1034 /* Read kernel dumping information. */ 1035 disk->d_kd.offset = 0; 1036 disk->d_kd.length = OFF_MAX; 1037 len = sizeof(disk->d_kd); 1038 error = g_io_getattr("GEOM::kerneldump", rcp, &len, &disk->d_kd); 1039 if (disk->d_kd.di.dumper == NULL) 1040 G_RAID_DEBUG1(2, sc, "Dumping not supported by %s: %d.", 1041 rcp->provider->name, error); 1042 1043 g_raid_md_sii_new_disk(disk); 1044 1045 sx_xunlock(&sc->sc_lock); 1046 g_topology_lock(); 1047 *gp = geom; 1048 return (result); 1049fail1: 1050 free(meta, M_MD_SII); 1051 return (G_RAID_MD_TASTE_FAIL); 1052} 1053 1054static int 1055g_raid_md_event_sii(struct g_raid_md_object *md, 1056 struct g_raid_disk *disk, u_int event) 1057{ 1058 struct g_raid_softc *sc; 1059 struct g_raid_subdisk *sd; 1060 struct g_raid_md_sii_object *mdi; 1061 struct g_raid_md_sii_perdisk *pd; 1062 1063 sc = md->mdo_softc; 1064 mdi = (struct g_raid_md_sii_object *)md; 1065 if (disk == NULL) { 1066 switch (event) { 1067 case G_RAID_NODE_E_START: 1068 if (!mdi->mdio_started) 1069 g_raid_md_sii_start(sc); 1070 return (0); 1071 } 1072 return (-1); 1073 } 1074 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1075 switch (event) { 1076 case G_RAID_DISK_E_DISCONNECTED: 1077 /* If disk was assigned, just update statuses. */ 1078 if (pd->pd_disk_pos >= 0) { 1079 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1080 if (disk->d_consumer) { 1081 g_raid_kill_consumer(sc, disk->d_consumer); 1082 disk->d_consumer = NULL; 1083 } 1084 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 1085 g_raid_change_subdisk_state(sd, 1086 G_RAID_SUBDISK_S_NONE); 1087 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED, 1088 G_RAID_EVENT_SUBDISK); 1089 } 1090 } else { 1091 /* Otherwise -- delete. */ 1092 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1093 g_raid_destroy_disk(disk); 1094 } 1095 1096 /* Write updated metadata to all disks. */ 1097 g_raid_md_write_sii(md, NULL, NULL, NULL); 1098 1099 /* Check if anything left except placeholders. */ 1100 if (g_raid_ndisks(sc, -1) == 1101 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1102 g_raid_destroy_node(sc, 0); 1103 else 1104 g_raid_md_sii_refill(sc); 1105 return (0); 1106 } 1107 return (-2); 1108} 1109 1110static int 1111g_raid_md_ctl_sii(struct g_raid_md_object *md, 1112 struct gctl_req *req) 1113{ 1114 struct g_raid_softc *sc; 1115 struct g_raid_volume *vol; 1116 struct g_raid_subdisk *sd; 1117 struct g_raid_disk *disk; 1118 struct g_raid_md_sii_object *mdi; 1119 struct g_raid_md_sii_perdisk *pd; 1120 struct g_consumer *cp; 1121 struct g_provider *pp; 1122 char arg[16]; 1123 const char *verb, *volname, *levelname, *diskname; 1124 int *nargs, *force; 1125 off_t size, sectorsize, strip; 1126 intmax_t *sizearg, *striparg; 1127 int numdisks, i, len, level, qual, update; 1128 int error; 1129 1130 sc = md->mdo_softc; 1131 mdi = (struct g_raid_md_sii_object *)md; 1132 verb = gctl_get_param(req, "verb", NULL); 1133 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 1134 error = 0; 1135 if (strcmp(verb, "label") == 0) { 1136 1137 if (*nargs < 4) { 1138 gctl_error(req, "Invalid number of arguments."); 1139 return (-1); 1140 } 1141 volname = gctl_get_asciiparam(req, "arg1"); 1142 if (volname == NULL) { 1143 gctl_error(req, "No volume name."); 1144 return (-2); 1145 } 1146 levelname = gctl_get_asciiparam(req, "arg2"); 1147 if (levelname == NULL) { 1148 gctl_error(req, "No RAID level."); 1149 return (-3); 1150 } 1151 if (strcasecmp(levelname, "RAID5") == 0) 1152 levelname = "RAID5-LS"; 1153 if (g_raid_volume_str2level(levelname, &level, &qual)) { 1154 gctl_error(req, "Unknown RAID level '%s'.", levelname); 1155 return (-4); 1156 } 1157 numdisks = *nargs - 3; 1158 force = gctl_get_paraml(req, "force", sizeof(*force)); 1159 if (!g_raid_md_sii_supported(level, qual, numdisks, 1160 force ? *force : 0)) { 1161 gctl_error(req, "Unsupported RAID level " 1162 "(0x%02x/0x%02x), or number of disks (%d).", 1163 level, qual, numdisks); 1164 return (-5); 1165 } 1166 1167 /* Search for disks, connect them and probe. */ 1168 size = 0x7fffffffffffffffllu; 1169 sectorsize = 0; 1170 for (i = 0; i < numdisks; i++) { 1171 snprintf(arg, sizeof(arg), "arg%d", i + 3); 1172 diskname = gctl_get_asciiparam(req, arg); 1173 if (diskname == NULL) { 1174 gctl_error(req, "No disk name (%s).", arg); 1175 error = -6; 1176 break; 1177 } 1178 if (strcmp(diskname, "NONE") == 0) { 1179 cp = NULL; 1180 pp = NULL; 1181 } else { 1182 g_topology_lock(); 1183 cp = g_raid_open_consumer(sc, diskname); 1184 if (cp == NULL) { 1185 gctl_error(req, "Can't open '%s'.", 1186 diskname); 1187 g_topology_unlock(); 1188 error = -7; 1189 break; 1190 } 1191 pp = cp->provider; 1192 } 1193 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1194 pd->pd_disk_pos = i; 1195 disk = g_raid_create_disk(sc); 1196 disk->d_md_data = (void *)pd; 1197 disk->d_consumer = cp; 1198 if (cp == NULL) 1199 continue; 1200 cp->private = disk; 1201 g_topology_unlock(); 1202 1203 /* Read kernel dumping information. */ 1204 disk->d_kd.offset = 0; 1205 disk->d_kd.length = OFF_MAX; 1206 len = sizeof(disk->d_kd); 1207 g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd); 1208 if (disk->d_kd.di.dumper == NULL) 1209 G_RAID_DEBUG1(2, sc, 1210 "Dumping not supported by %s.", 1211 cp->provider->name); 1212 1213 pd->pd_disk_size = pp->mediasize; 1214 if (size > pp->mediasize) 1215 size = pp->mediasize; 1216 if (sectorsize < pp->sectorsize) 1217 sectorsize = pp->sectorsize; 1218 } 1219 if (error != 0) 1220 return (error); 1221 1222 if (sectorsize <= 0) { 1223 gctl_error(req, "Can't get sector size."); 1224 return (-8); 1225 } 1226 1227 /* Reserve space for metadata. */ 1228 size -= 0x800 * sectorsize; 1229 1230 /* Handle size argument. */ 1231 len = sizeof(*sizearg); 1232 sizearg = gctl_get_param(req, "size", &len); 1233 if (sizearg != NULL && len == sizeof(*sizearg) && 1234 *sizearg > 0) { 1235 if (*sizearg > size) { 1236 gctl_error(req, "Size too big %lld > %lld.", 1237 (long long)*sizearg, (long long)size); 1238 return (-9); 1239 } 1240 size = *sizearg; 1241 } 1242 1243 /* Handle strip argument. */ 1244 strip = 131072; 1245 len = sizeof(*striparg); 1246 striparg = gctl_get_param(req, "strip", &len); 1247 if (striparg != NULL && len == sizeof(*striparg) && 1248 *striparg > 0) { 1249 if (*striparg < sectorsize) { 1250 gctl_error(req, "Strip size too small."); 1251 return (-10); 1252 } 1253 if (*striparg % sectorsize != 0) { 1254 gctl_error(req, "Incorrect strip size."); 1255 return (-11); 1256 } 1257 if (strip > 65535 * sectorsize) { 1258 gctl_error(req, "Strip size too big."); 1259 return (-12); 1260 } 1261 strip = *striparg; 1262 } 1263 1264 /* Round size down to strip or sector. */ 1265 if (level == G_RAID_VOLUME_RL_RAID1) 1266 size -= (size % sectorsize); 1267 else if (level == G_RAID_VOLUME_RL_RAID1E && 1268 (numdisks & 1) != 0) 1269 size -= (size % (2 * strip)); 1270 else 1271 size -= (size % strip); 1272 if (size <= 0) { 1273 gctl_error(req, "Size too small."); 1274 return (-13); 1275 } 1276 if (size > 0xffffffffffffllu * sectorsize) { 1277 gctl_error(req, "Size too big."); 1278 return (-14); 1279 } 1280 1281 /* We have all we need, create things: volume, ... */ 1282 mdi->mdio_total_disks = numdisks; 1283 mdi->mdio_started = 1; 1284 vol = g_raid_create_volume(sc, volname, -1); 1285 vol->v_md_data = (void *)(intptr_t)0; 1286 vol->v_raid_level = level; 1287 vol->v_raid_level_qualifier = qual; 1288 vol->v_strip_size = strip; 1289 vol->v_disks_count = numdisks; 1290 if (level == G_RAID_VOLUME_RL_RAID0 || 1291 level == G_RAID_VOLUME_RL_CONCAT || 1292 level == G_RAID_VOLUME_RL_SINGLE) 1293 vol->v_mediasize = size * numdisks; 1294 else if (level == G_RAID_VOLUME_RL_RAID1) 1295 vol->v_mediasize = size; 1296 else if (level == G_RAID_VOLUME_RL_RAID5) 1297 vol->v_mediasize = size * (numdisks - 1); 1298 else { /* RAID1E */ 1299 vol->v_mediasize = ((size * numdisks) / strip / 2) * 1300 strip; 1301 } 1302 vol->v_sectorsize = sectorsize; 1303 g_raid_start_volume(vol); 1304 1305 /* , and subdisks. */ 1306 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1307 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1308 sd = &vol->v_subdisks[pd->pd_disk_pos]; 1309 sd->sd_disk = disk; 1310 sd->sd_offset = 0; 1311 sd->sd_size = size; 1312 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 1313 if (sd->sd_disk->d_consumer != NULL) { 1314 g_raid_change_disk_state(disk, 1315 G_RAID_DISK_S_ACTIVE); 1316 g_raid_change_subdisk_state(sd, 1317 G_RAID_SUBDISK_S_ACTIVE); 1318 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 1319 G_RAID_EVENT_SUBDISK); 1320 } else { 1321 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1322 } 1323 } 1324 1325 /* Write metadata based on created entities. */ 1326 G_RAID_DEBUG1(0, sc, "Array started."); 1327 g_raid_md_write_sii(md, NULL, NULL, NULL); 1328 1329 /* Pickup any STALE/SPARE disks to refill array if needed. */ 1330 g_raid_md_sii_refill(sc); 1331 1332 g_raid_event_send(vol, G_RAID_VOLUME_E_START, 1333 G_RAID_EVENT_VOLUME); 1334 return (0); 1335 } 1336 if (strcmp(verb, "delete") == 0) { 1337 1338 /* Check if some volume is still open. */ 1339 force = gctl_get_paraml(req, "force", sizeof(*force)); 1340 if (force != NULL && *force == 0 && 1341 g_raid_nopens(sc) != 0) { 1342 gctl_error(req, "Some volume is still open."); 1343 return (-4); 1344 } 1345 1346 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1347 if (disk->d_consumer) 1348 sii_meta_erase(disk->d_consumer); 1349 } 1350 g_raid_destroy_node(sc, 0); 1351 return (0); 1352 } 1353 if (strcmp(verb, "remove") == 0 || 1354 strcmp(verb, "fail") == 0) { 1355 if (*nargs < 2) { 1356 gctl_error(req, "Invalid number of arguments."); 1357 return (-1); 1358 } 1359 for (i = 1; i < *nargs; i++) { 1360 snprintf(arg, sizeof(arg), "arg%d", i); 1361 diskname = gctl_get_asciiparam(req, arg); 1362 if (diskname == NULL) { 1363 gctl_error(req, "No disk name (%s).", arg); 1364 error = -2; 1365 break; 1366 } 1367 if (strncmp(diskname, "/dev/", 5) == 0) 1368 diskname += 5; 1369 1370 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1371 if (disk->d_consumer != NULL && 1372 disk->d_consumer->provider != NULL && 1373 strcmp(disk->d_consumer->provider->name, 1374 diskname) == 0) 1375 break; 1376 } 1377 if (disk == NULL) { 1378 gctl_error(req, "Disk '%s' not found.", 1379 diskname); 1380 error = -3; 1381 break; 1382 } 1383 1384 if (strcmp(verb, "fail") == 0) { 1385 g_raid_md_fail_disk_sii(md, NULL, disk); 1386 continue; 1387 } 1388 1389 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1390 1391 /* Erase metadata on deleting disk. */ 1392 sii_meta_erase(disk->d_consumer); 1393 1394 /* If disk was assigned, just update statuses. */ 1395 if (pd->pd_disk_pos >= 0) { 1396 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1397 g_raid_kill_consumer(sc, disk->d_consumer); 1398 disk->d_consumer = NULL; 1399 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 1400 g_raid_change_subdisk_state(sd, 1401 G_RAID_SUBDISK_S_NONE); 1402 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED, 1403 G_RAID_EVENT_SUBDISK); 1404 } 1405 } else { 1406 /* Otherwise -- delete. */ 1407 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1408 g_raid_destroy_disk(disk); 1409 } 1410 } 1411 1412 /* Write updated metadata to remaining disks. */ 1413 g_raid_md_write_sii(md, NULL, NULL, NULL); 1414 1415 /* Check if anything left except placeholders. */ 1416 if (g_raid_ndisks(sc, -1) == 1417 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1418 g_raid_destroy_node(sc, 0); 1419 else 1420 g_raid_md_sii_refill(sc); 1421 return (error); 1422 } 1423 if (strcmp(verb, "insert") == 0) { 1424 if (*nargs < 2) { 1425 gctl_error(req, "Invalid number of arguments."); 1426 return (-1); 1427 } 1428 update = 0; 1429 for (i = 1; i < *nargs; i++) { 1430 /* Get disk name. */ 1431 snprintf(arg, sizeof(arg), "arg%d", i); 1432 diskname = gctl_get_asciiparam(req, arg); 1433 if (diskname == NULL) { 1434 gctl_error(req, "No disk name (%s).", arg); 1435 error = -3; 1436 break; 1437 } 1438 1439 /* Try to find provider with specified name. */ 1440 g_topology_lock(); 1441 cp = g_raid_open_consumer(sc, diskname); 1442 if (cp == NULL) { 1443 gctl_error(req, "Can't open disk '%s'.", 1444 diskname); 1445 g_topology_unlock(); 1446 error = -4; 1447 break; 1448 } 1449 pp = cp->provider; 1450 1451 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1452 pd->pd_disk_pos = -3; 1453 pd->pd_disk_size = pp->mediasize; 1454 1455 disk = g_raid_create_disk(sc); 1456 disk->d_consumer = cp; 1457 disk->d_md_data = (void *)pd; 1458 cp->private = disk; 1459 g_topology_unlock(); 1460 1461 /* Read kernel dumping information. */ 1462 disk->d_kd.offset = 0; 1463 disk->d_kd.length = OFF_MAX; 1464 len = sizeof(disk->d_kd); 1465 g_io_getattr("GEOM::kerneldump", cp, &len, &disk->d_kd); 1466 if (disk->d_kd.di.dumper == NULL) 1467 G_RAID_DEBUG1(2, sc, 1468 "Dumping not supported by %s.", 1469 cp->provider->name); 1470 1471 /* Welcome the "new" disk. */ 1472 update += g_raid_md_sii_start_disk(disk); 1473 if (disk->d_state == G_RAID_DISK_S_SPARE) { 1474 sii_meta_write_spare(cp); 1475 g_raid_destroy_disk(disk); 1476 } else if (disk->d_state != G_RAID_DISK_S_ACTIVE) { 1477 gctl_error(req, "Disk '%s' doesn't fit.", 1478 diskname); 1479 g_raid_destroy_disk(disk); 1480 error = -8; 1481 break; 1482 } 1483 } 1484 1485 /* Write new metadata if we changed something. */ 1486 if (update) 1487 g_raid_md_write_sii(md, NULL, NULL, NULL); 1488 return (error); 1489 } 1490 gctl_error(req, "Command '%s' is not supported.", verb); 1491 return (-100); 1492} 1493 1494static int 1495g_raid_md_write_sii(struct g_raid_md_object *md, struct g_raid_volume *tvol, 1496 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1497{ 1498 struct g_raid_softc *sc; 1499 struct g_raid_volume *vol; 1500 struct g_raid_subdisk *sd; 1501 struct g_raid_disk *disk; 1502 struct g_raid_md_sii_object *mdi; 1503 struct g_raid_md_sii_perdisk *pd; 1504 struct sii_raid_conf *meta; 1505 int i; 1506 1507 sc = md->mdo_softc; 1508 mdi = (struct g_raid_md_sii_object *)md; 1509 1510 if (sc->sc_stopping == G_RAID_DESTROY_HARD) 1511 return (0); 1512 1513 /* Bump generation. Newly written metadata may differ from previous. */ 1514 mdi->mdio_generation++; 1515 1516 /* There is only one volume. */ 1517 vol = TAILQ_FIRST(&sc->sc_volumes); 1518 1519 /* Fill global fields. */ 1520 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO); 1521 if (mdi->mdio_meta) 1522 memcpy(meta, mdi->mdio_meta, sizeof(*meta)); 1523 meta->total_sectors = vol->v_mediasize / vol->v_sectorsize; 1524 meta->vendor_id = 0x1095; 1525 meta->version_minor = 0; 1526 meta->version_major = 2; 1527 memcpy(&meta->timestamp, &mdi->mdio_timestamp, 6); 1528 meta->strip_sectors = vol->v_strip_size / vol->v_sectorsize; 1529 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0) { 1530 meta->type = SII_T_RAID0; 1531 meta->raid0_disks = vol->v_disks_count; 1532 meta->raid1_disks = 0xff; 1533 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) { 1534 meta->type = SII_T_RAID1; 1535 meta->raid0_disks = 0xff; 1536 meta->raid1_disks = vol->v_disks_count; 1537 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1538 meta->type = SII_T_RAID01; 1539 meta->raid0_disks = vol->v_disks_count / 2; 1540 meta->raid1_disks = 2; 1541 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT || 1542 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) { 1543 meta->type = SII_T_JBOD; 1544 meta->raid0_disks = vol->v_disks_count; 1545 meta->raid1_disks = 0xff; 1546 } else { 1547 meta->type = SII_T_RAID5; 1548 meta->raid0_disks = vol->v_disks_count; 1549 meta->raid1_disks = 0xff; 1550 } 1551 meta->generation = mdi->mdio_generation; 1552 meta->raid_status = vol->v_dirty ? SII_S_ONLINE : SII_S_AVAILABLE; 1553 for (i = 0; i < vol->v_disks_count; i++) { 1554 sd = &vol->v_subdisks[i]; 1555 if (sd->sd_state == G_RAID_SUBDISK_S_STALE || 1556 sd->sd_state == G_RAID_SUBDISK_S_RESYNC) 1557 meta->raid_status = SII_S_ONLINE; 1558 } 1559 meta->raid_location = mdi->mdio_location; 1560 sii_meta_put_name(meta, vol->v_name); 1561 1562 /* We are done. Print meta data and store them to disks. */ 1563 if (mdi->mdio_meta != NULL) 1564 free(mdi->mdio_meta, M_MD_SII); 1565 mdi->mdio_meta = meta; 1566 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1567 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1568 if (disk->d_state != G_RAID_DISK_S_ACTIVE) 1569 continue; 1570 if (pd->pd_meta != NULL) { 1571 free(pd->pd_meta, M_MD_SII); 1572 pd->pd_meta = NULL; 1573 } 1574 pd->pd_meta = sii_meta_copy(meta); 1575 if ((sd = TAILQ_FIRST(&disk->d_subdisks)) != NULL) { 1576 if (sd->sd_state < G_RAID_SUBDISK_S_NEW) 1577 pd->pd_meta->disk_status = SII_S_DROPPED; 1578 else if (sd->sd_state < G_RAID_SUBDISK_S_STALE) { 1579 pd->pd_meta->disk_status = SII_S_REBUILD; 1580 pd->pd_meta->rebuild_lba = 1581 sd->sd_rebuild_pos / vol->v_sectorsize; 1582 } else 1583 pd->pd_meta->disk_status = SII_S_CURRENT; 1584 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) { 1585 pd->pd_meta->disk_number = sd->sd_pos; 1586 pd->pd_meta->raid0_ident = 0xff; 1587 pd->pd_meta->raid1_ident = 0; 1588 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1589 pd->pd_meta->disk_number = sd->sd_pos / meta->raid1_disks; 1590 pd->pd_meta->raid0_ident = sd->sd_pos % meta->raid1_disks; 1591 pd->pd_meta->raid1_ident = sd->sd_pos / meta->raid1_disks; 1592 } else { 1593 pd->pd_meta->disk_number = sd->sd_pos; 1594 pd->pd_meta->raid0_ident = 0; 1595 pd->pd_meta->raid1_ident = 0xff; 1596 } 1597 } 1598 G_RAID_DEBUG(1, "Writing SiI metadata to %s", 1599 g_raid_get_diskname(disk)); 1600 g_raid_md_sii_print(pd->pd_meta); 1601 sii_meta_write(disk->d_consumer, pd->pd_meta); 1602 } 1603 return (0); 1604} 1605 1606static int 1607g_raid_md_fail_disk_sii(struct g_raid_md_object *md, 1608 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1609{ 1610 struct g_raid_softc *sc; 1611 struct g_raid_md_sii_perdisk *pd; 1612 struct g_raid_subdisk *sd; 1613 1614 sc = md->mdo_softc; 1615 pd = (struct g_raid_md_sii_perdisk *)tdisk->d_md_data; 1616 1617 /* We can't fail disk that is not a part of array now. */ 1618 if (pd->pd_disk_pos < 0) 1619 return (-1); 1620 1621 /* 1622 * Mark disk as failed in metadata and try to write that metadata 1623 * to the disk itself to prevent it's later resurrection as STALE. 1624 */ 1625 if (tdisk->d_consumer) { 1626 if (pd->pd_meta) { 1627 pd->pd_meta->disk_status = SII_S_REMOVED; 1628 sii_meta_write(tdisk->d_consumer, pd->pd_meta); 1629 } else 1630 sii_meta_erase(tdisk->d_consumer); 1631 } 1632 1633 /* Change states. */ 1634 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED); 1635 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) { 1636 g_raid_change_subdisk_state(sd, 1637 G_RAID_SUBDISK_S_FAILED); 1638 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED, 1639 G_RAID_EVENT_SUBDISK); 1640 } 1641 1642 /* Write updated metadata to remaining disks. */ 1643 g_raid_md_write_sii(md, NULL, NULL, tdisk); 1644 1645 /* Check if anything left except placeholders. */ 1646 if (g_raid_ndisks(sc, -1) == 1647 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1648 g_raid_destroy_node(sc, 0); 1649 else 1650 g_raid_md_sii_refill(sc); 1651 return (0); 1652} 1653 1654static int 1655g_raid_md_free_disk_sii(struct g_raid_md_object *md, 1656 struct g_raid_disk *disk) 1657{ 1658 struct g_raid_md_sii_perdisk *pd; 1659 1660 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1661 if (pd->pd_meta != NULL) { 1662 free(pd->pd_meta, M_MD_SII); 1663 pd->pd_meta = NULL; 1664 } 1665 free(pd, M_MD_SII); 1666 disk->d_md_data = NULL; 1667 return (0); 1668} 1669 1670static int 1671g_raid_md_free_sii(struct g_raid_md_object *md) 1672{ 1673 struct g_raid_md_sii_object *mdi; 1674 1675 mdi = (struct g_raid_md_sii_object *)md; 1676 if (!mdi->mdio_started) { 1677 mdi->mdio_started = 0; 1678 callout_stop(&mdi->mdio_start_co); 1679 G_RAID_DEBUG1(1, md->mdo_softc, 1680 "root_mount_rel %p", mdi->mdio_rootmount); 1681 root_mount_rel(mdi->mdio_rootmount); 1682 mdi->mdio_rootmount = NULL; 1683 } 1684 if (mdi->mdio_meta != NULL) { 1685 free(mdi->mdio_meta, M_MD_SII); 1686 mdi->mdio_meta = NULL; 1687 } 1688 return (0); 1689} 1690 1691G_RAID_MD_DECLARE(g_raid_md_sii); 1692