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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 * Copyright (c) 2000 - 2008 Søren Schmidt <sos@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD: releng/10.0/sys/geom/raid/md_sii.c 242323 2012-10-29 18:04:38Z 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 46 static MALLOC_DEFINE(M_MD_SII, "md_sii_data", "GEOM_RAID SiI metadata"); 47 48 struct 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 98 struct g_raid_md_sii_perdisk { 99 struct sii_raid_conf *pd_meta; 100 int pd_disk_pos; 101 off_t pd_disk_size; 102 }; 103 104 struct 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 }; 117 118 static g_raid_md_create_t g_raid_md_create_sii; 119 static g_raid_md_taste_t g_raid_md_taste_sii; 120 static g_raid_md_event_t g_raid_md_event_sii; 121 static g_raid_md_ctl_t g_raid_md_ctl_sii; 122 static g_raid_md_write_t g_raid_md_write_sii; 123 static g_raid_md_fail_disk_t g_raid_md_fail_disk_sii; 124 static g_raid_md_free_disk_t g_raid_md_free_disk_sii; 125 static g_raid_md_free_t g_raid_md_free_sii; 126 127 static 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 }; 138 139 static 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_enable = 1, 144 .mdc_priority = 100 145 }; 146 147 static void 148 g_raid_md_sii_print(struct sii_raid_conf *meta) 149 { 150 151 if (g_raid_debug < 1) 152 return; 153 154 printf("********* ATA SiI RAID Metadata *********\n"); 155 printf("total_sectors %llu\n", 156 (long long unsigned)meta->total_sectors); 157 printf("product_id 0x%04x\n", meta->product_id); 158 printf("vendor_id 0x%04x\n", meta->vendor_id); 159 printf("version_minor 0x%04x\n", meta->version_minor); 160 printf("version_major 0x%04x\n", meta->version_major); 161 printf("timestamp 0x%02x%02x%02x%02x%02x%02x\n", 162 meta->timestamp[5], meta->timestamp[4], meta->timestamp[3], 163 meta->timestamp[2], meta->timestamp[1], meta->timestamp[0]); 164 printf("strip_sectors %d\n", meta->strip_sectors); 165 printf("disk_number %d\n", meta->disk_number); 166 printf("type 0x%02x\n", meta->type); 167 printf("raid0_disks %d\n", meta->raid0_disks); 168 printf("raid0_ident %d\n", meta->raid0_ident); 169 printf("raid1_disks %d\n", meta->raid1_disks); 170 printf("raid1_ident %d\n", meta->raid1_ident); 171 printf("rebuild_lba %llu\n", 172 (long long unsigned)meta->rebuild_lba); 173 printf("generation %d\n", meta->generation); 174 printf("disk_status %d\n", meta->disk_status); 175 printf("raid_status %d\n", meta->raid_status); 176 printf("raid_location %d\n", meta->raid_location); 177 printf("disk_location %d\n", meta->disk_location); 178 printf("auto_rebuild %d\n", meta->auto_rebuild); 179 printf("name <%.16s>\n", meta->name); 180 printf("checksum 0x%04x\n", meta->checksum); 181 printf("=================================================\n"); 182 } 183 184 static struct sii_raid_conf * 185 sii_meta_copy(struct sii_raid_conf *meta) 186 { 187 struct sii_raid_conf *nmeta; 188 189 nmeta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK); 190 memcpy(nmeta, meta, sizeof(*meta)); 191 return (nmeta); 192 } 193 194 static int 195 sii_meta_total_disks(struct sii_raid_conf *meta) 196 { 197 198 switch (meta->type) { 199 case SII_T_RAID0: 200 case SII_T_RAID5: 201 case SII_T_CONCAT: 202 return (meta->raid0_disks); 203 case SII_T_RAID1: 204 return (meta->raid1_disks); 205 case SII_T_RAID01: 206 return (meta->raid0_disks * meta->raid1_disks); 207 case SII_T_SPARE: 208 case SII_T_JBOD: 209 return (1); 210 } 211 return (0); 212 } 213 214 static int 215 sii_meta_disk_pos(struct sii_raid_conf *meta, struct sii_raid_conf *pdmeta) 216 { 217 218 if (pdmeta->type == SII_T_SPARE) 219 return (-3); 220 221 if (memcmp(&meta->timestamp, &pdmeta->timestamp, 6) != 0) 222 return (-1); 223 224 switch (pdmeta->type) { 225 case SII_T_RAID0: 226 case SII_T_RAID1: 227 case SII_T_RAID5: 228 case SII_T_CONCAT: 229 return (pdmeta->disk_number); 230 case SII_T_RAID01: 231 return (pdmeta->raid1_ident * pdmeta->raid1_disks + 232 pdmeta->raid0_ident); 233 case SII_T_JBOD: 234 return (0); 235 } 236 return (-1); 237 } 238 239 static void 240 sii_meta_get_name(struct sii_raid_conf *meta, char *buf) 241 { 242 int i; 243 244 strncpy(buf, meta->name, 16); 245 buf[16] = 0; 246 for (i = 15; i >= 0; i--) { 247 if (buf[i] > 0x20) 248 break; 249 buf[i] = 0; 250 } 251 } 252 253 static void 254 sii_meta_put_name(struct sii_raid_conf *meta, char *buf) 255 { 256 257 memset(meta->name, 0x20, 16); 258 memcpy(meta->name, buf, MIN(strlen(buf), 16)); 259 } 260 261 static struct sii_raid_conf * 262 sii_meta_read(struct g_consumer *cp) 263 { 264 struct g_provider *pp; 265 struct sii_raid_conf *meta; 266 char *buf; 267 int error, i; 268 uint16_t checksum, *ptr; 269 270 pp = cp->provider; 271 272 /* Read the anchor sector. */ 273 buf = g_read_data(cp, 274 pp->mediasize - pp->sectorsize, pp->sectorsize, &error); 275 if (buf == NULL) { 276 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).", 277 pp->name, error); 278 return (NULL); 279 } 280 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK); 281 memcpy(meta, buf, min(sizeof(*meta), pp->sectorsize)); 282 g_free(buf); 283 284 /* Check vendor ID. */ 285 if (meta->vendor_id != 0x1095) { 286 G_RAID_DEBUG(1, "SiI vendor ID check failed on %s (0x%04x)", 287 pp->name, meta->vendor_id); 288 free(meta, M_MD_SII); 289 return (NULL); 290 } 291 292 /* Check metadata major version. */ 293 if (meta->version_major != 2) { 294 G_RAID_DEBUG(1, "SiI version check failed on %s (%d.%d)", 295 pp->name, meta->version_major, meta->version_minor); 296 free(meta, M_MD_SII); 297 return (NULL); 298 } 299 300 /* Check metadata checksum. */ 301 for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i <= 159; i++) 302 checksum += *ptr++; 303 if (checksum != 0) { 304 G_RAID_DEBUG(1, "SiI checksum check failed on %s", pp->name); 305 free(meta, M_MD_SII); 306 return (NULL); 307 } 308 309 /* Check raid type. */ 310 if (meta->type != SII_T_RAID0 && meta->type != SII_T_RAID1 && 311 meta->type != SII_T_RAID01 && meta->type != SII_T_SPARE && 312 meta->type != SII_T_RAID5 && meta->type != SII_T_CONCAT && 313 meta->type != SII_T_JBOD) { 314 G_RAID_DEBUG(1, "SiI unknown RAID level on %s (0x%02x)", 315 pp->name, meta->type); 316 free(meta, M_MD_SII); 317 return (NULL); 318 } 319 320 return (meta); 321 } 322 323 static int 324 sii_meta_write(struct g_consumer *cp, struct sii_raid_conf *meta) 325 { 326 struct g_provider *pp; 327 char *buf; 328 int error, i; 329 uint16_t checksum, *ptr; 330 331 pp = cp->provider; 332 333 /* Recalculate checksum for case if metadata were changed. */ 334 meta->checksum = 0; 335 for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i < 159; i++) 336 checksum += *ptr++; 337 meta->checksum -= checksum; 338 339 /* Create and fill buffer. */ 340 buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO); 341 memcpy(buf, meta, sizeof(*meta)); 342 343 /* Write 4 copies of metadata. */ 344 for (i = 0; i < 4; i++) { 345 error = g_write_data(cp, 346 pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)), 347 buf, pp->sectorsize); 348 if (error != 0) { 349 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).", 350 pp->name, error); 351 break; 352 } 353 } 354 355 free(buf, M_MD_SII); 356 return (error); 357 } 358 359 static int 360 sii_meta_erase(struct g_consumer *cp) 361 { 362 struct g_provider *pp; 363 char *buf; 364 int error, i; 365 366 pp = cp->provider; 367 buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO); 368 /* Write 4 copies of metadata. */ 369 for (i = 0; i < 4; i++) { 370 error = g_write_data(cp, 371 pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)), 372 buf, pp->sectorsize); 373 if (error != 0) { 374 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).", 375 pp->name, error); 376 } 377 } 378 free(buf, M_MD_SII); 379 return (error); 380 } 381 382 static int 383 sii_meta_write_spare(struct g_consumer *cp) 384 { 385 struct sii_raid_conf *meta; 386 int error; 387 388 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO); 389 meta->total_sectors = cp->provider->mediasize / 390 cp->provider->sectorsize - 0x800; 391 meta->vendor_id = 0x1095; 392 meta->version_minor = 0; 393 meta->version_major = 2; 394 meta->timestamp[0] = arc4random(); 395 meta->timestamp[1] = arc4random(); 396 meta->timestamp[2] = arc4random(); 397 meta->timestamp[3] = arc4random(); 398 meta->timestamp[4] = arc4random(); 399 meta->timestamp[5] = arc4random(); 400 meta->type = SII_T_SPARE; 401 meta->generation = 1; 402 meta->raid1_ident = 0xff; 403 meta->raid_location = arc4random(); 404 error = sii_meta_write(cp, meta); 405 free(meta, M_MD_SII); 406 return (error); 407 } 408 409 static struct g_raid_disk * 410 g_raid_md_sii_get_disk(struct g_raid_softc *sc, int id) 411 { 412 struct g_raid_disk *disk; 413 struct g_raid_md_sii_perdisk *pd; 414 415 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 416 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 417 if (pd->pd_disk_pos == id) 418 break; 419 } 420 return (disk); 421 } 422 423 static int 424 g_raid_md_sii_supported(int level, int qual, int disks, int force) 425 { 426 427 if (disks > 8) 428 return (0); 429 switch (level) { 430 case G_RAID_VOLUME_RL_RAID0: 431 if (disks < 1) 432 return (0); 433 if (!force && (disks < 2 || disks > 6)) 434 return (0); 435 break; 436 case G_RAID_VOLUME_RL_RAID1: 437 if (disks < 1) 438 return (0); 439 if (!force && (disks != 2)) 440 return (0); 441 break; 442 case G_RAID_VOLUME_RL_RAID1E: 443 if (disks < 2) 444 return (0); 445 if (disks % 2 != 0) 446 return (0); 447 if (!force && (disks < 4)) 448 return (0); 449 break; 450 case G_RAID_VOLUME_RL_SINGLE: 451 if (disks != 1) 452 return (0); 453 break; 454 case G_RAID_VOLUME_RL_CONCAT: 455 if (disks < 2) 456 return (0); 457 break; 458 case G_RAID_VOLUME_RL_RAID5: 459 if (disks < 3) 460 return (0); 461 if (qual != G_RAID_VOLUME_RLQ_R5LS) 462 return (0); 463 break; 464 default: 465 return (0); 466 } 467 if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE) 468 return (0); 469 return (1); 470 } 471 472 static int 473 g_raid_md_sii_start_disk(struct g_raid_disk *disk) 474 { 475 struct g_raid_softc *sc; 476 struct g_raid_subdisk *sd, *tmpsd; 477 struct g_raid_disk *olddisk, *tmpdisk; 478 struct g_raid_md_object *md; 479 struct g_raid_md_sii_object *mdi; 480 struct g_raid_md_sii_perdisk *pd, *oldpd; 481 struct sii_raid_conf *meta; 482 int disk_pos, resurrection = 0; 483 484 sc = disk->d_softc; 485 md = sc->sc_md; 486 mdi = (struct g_raid_md_sii_object *)md; 487 meta = mdi->mdio_meta; 488 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 489 olddisk = NULL; 490 491 /* Find disk position in metadata by it's serial. */ 492 if (pd->pd_meta != NULL) 493 disk_pos = sii_meta_disk_pos(meta, pd->pd_meta); 494 else 495 disk_pos = -3; 496 if (disk_pos < 0) { 497 G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk"); 498 /* If we are in the start process, that's all for now. */ 499 if (!mdi->mdio_started) 500 goto nofit; 501 /* 502 * If we have already started - try to get use of the disk. 503 * Try to replace OFFLINE disks first, then FAILED. 504 */ 505 TAILQ_FOREACH(tmpdisk, &sc->sc_disks, d_next) { 506 if (tmpdisk->d_state != G_RAID_DISK_S_OFFLINE && 507 tmpdisk->d_state != G_RAID_DISK_S_FAILED) 508 continue; 509 /* Make sure this disk is big enough. */ 510 TAILQ_FOREACH(sd, &tmpdisk->d_subdisks, sd_next) { 511 if (sd->sd_offset + sd->sd_size + 512 > 512 pd->pd_disk_size) { 513 G_RAID_DEBUG1(1, sc, 514 "Disk too small (%ju < %ju)", 515 pd->pd_disk_size, 516 sd->sd_offset + sd->sd_size + 512); 517 break; 518 } 519 } 520 if (sd != NULL) 521 continue; 522 if (tmpdisk->d_state == G_RAID_DISK_S_OFFLINE) { 523 olddisk = tmpdisk; 524 break; 525 } else if (olddisk == NULL) 526 olddisk = tmpdisk; 527 } 528 if (olddisk == NULL) { 529 nofit: 530 if (disk_pos == -3 || pd->pd_disk_pos == -3) { 531 g_raid_change_disk_state(disk, 532 G_RAID_DISK_S_SPARE); 533 return (1); 534 } else { 535 g_raid_change_disk_state(disk, 536 G_RAID_DISK_S_STALE); 537 return (0); 538 } 539 } 540 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data; 541 disk_pos = oldpd->pd_disk_pos; 542 resurrection = 1; 543 } 544 545 if (olddisk == NULL) { 546 /* Find placeholder by position. */ 547 olddisk = g_raid_md_sii_get_disk(sc, disk_pos); 548 if (olddisk == NULL) 549 panic("No disk at position %d!", disk_pos); 550 if (olddisk->d_state != G_RAID_DISK_S_OFFLINE) { 551 G_RAID_DEBUG1(1, sc, "More then one disk for pos %d", 552 disk_pos); 553 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE); 554 return (0); 555 } 556 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data; 557 } 558 559 /* Replace failed disk or placeholder with new disk. */ 560 TAILQ_FOREACH_SAFE(sd, &olddisk->d_subdisks, sd_next, tmpsd) { 561 TAILQ_REMOVE(&olddisk->d_subdisks, sd, sd_next); 562 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 563 sd->sd_disk = disk; 564 } 565 oldpd->pd_disk_pos = -2; 566 pd->pd_disk_pos = disk_pos; 567 568 /* If it was placeholder -- destroy it. */ 569 if (olddisk->d_state == G_RAID_DISK_S_OFFLINE) { 570 g_raid_destroy_disk(olddisk); 571 } else { 572 /* Otherwise, make it STALE_FAILED. */ 573 g_raid_change_disk_state(olddisk, G_RAID_DISK_S_STALE_FAILED); 574 } 575 576 /* Welcome the new disk. */ 577 if (resurrection) 578 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 579 else if (pd->pd_meta->disk_status == SII_S_CURRENT || 580 pd->pd_meta->disk_status == SII_S_REBUILD) 581 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 582 else 583 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED); 584 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 585 586 /* 587 * Different disks may have different sizes, 588 * in concat mode. Update from real disk size. 589 */ 590 if (meta->type == SII_T_CONCAT || meta->type == SII_T_JBOD) 591 sd->sd_size = pd->pd_disk_size - 0x800 * 512; 592 593 if (resurrection) { 594 /* New or ex-spare disk. */ 595 g_raid_change_subdisk_state(sd, 596 G_RAID_SUBDISK_S_NEW); 597 } else if (pd->pd_meta->disk_status == SII_S_REBUILD) { 598 /* Rebuilding disk. */ 599 g_raid_change_subdisk_state(sd, 600 G_RAID_SUBDISK_S_REBUILD); 601 if (pd->pd_meta->generation == meta->generation) 602 sd->sd_rebuild_pos = pd->pd_meta->rebuild_lba * 512; 603 else 604 sd->sd_rebuild_pos = 0; 605 } else if (pd->pd_meta->disk_status == SII_S_CURRENT) { 606 if (pd->pd_meta->raid_status == SII_S_ONLINE || 607 pd->pd_meta->generation != meta->generation) { 608 /* Dirty or resyncing disk. */ 609 g_raid_change_subdisk_state(sd, 610 G_RAID_SUBDISK_S_STALE); 611 } else { 612 /* Up to date disk. */ 613 g_raid_change_subdisk_state(sd, 614 G_RAID_SUBDISK_S_ACTIVE); 615 } 616 } else { 617 g_raid_change_subdisk_state(sd, 618 G_RAID_SUBDISK_S_FAILED); 619 } 620 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 621 G_RAID_EVENT_SUBDISK); 622 } 623 624 /* Update status of our need for spare. */ 625 if (mdi->mdio_started) { 626 mdi->mdio_incomplete = 627 (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) < 628 mdi->mdio_total_disks); 629 } 630 631 return (resurrection); 632 } 633 634 static void 635 g_disk_md_sii_retaste(void *arg, int pending) 636 { 637 638 G_RAID_DEBUG(1, "Array is not complete, trying to retaste."); 639 g_retaste(&g_raid_class); 640 free(arg, M_MD_SII); 641 } 642 643 static void 644 g_raid_md_sii_refill(struct g_raid_softc *sc) 645 { 646 struct g_raid_md_object *md; 647 struct g_raid_md_sii_object *mdi; 648 struct g_raid_disk *disk; 649 struct task *task; 650 int update, na; 651 652 md = sc->sc_md; 653 mdi = (struct g_raid_md_sii_object *)md; 654 update = 0; 655 do { 656 /* Make sure we miss anything. */ 657 na = g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE); 658 if (na == mdi->mdio_total_disks) 659 break; 660 661 G_RAID_DEBUG1(1, md->mdo_softc, 662 "Array is not complete (%d of %d), " 663 "trying to refill.", na, mdi->mdio_total_disks); 664 665 /* Try to get use some of STALE disks. */ 666 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 667 if (disk->d_state == G_RAID_DISK_S_STALE) { 668 update += g_raid_md_sii_start_disk(disk); 669 if (disk->d_state == G_RAID_DISK_S_ACTIVE) 670 break; 671 } 672 } 673 if (disk != NULL) 674 continue; 675 676 /* Try to get use some of SPARE disks. */ 677 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 678 if (disk->d_state == G_RAID_DISK_S_SPARE) { 679 update += g_raid_md_sii_start_disk(disk); 680 if (disk->d_state == G_RAID_DISK_S_ACTIVE) 681 break; 682 } 683 } 684 } while (disk != NULL); 685 686 /* Write new metadata if we changed something. */ 687 if (update) 688 g_raid_md_write_sii(md, NULL, NULL, NULL); 689 690 /* Update status of our need for spare. */ 691 mdi->mdio_incomplete = (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) < 692 mdi->mdio_total_disks); 693 694 /* Request retaste hoping to find spare. */ 695 if (mdi->mdio_incomplete) { 696 task = malloc(sizeof(struct task), 697 M_MD_SII, M_WAITOK | M_ZERO); 698 TASK_INIT(task, 0, g_disk_md_sii_retaste, task); 699 taskqueue_enqueue(taskqueue_swi, task); 700 } 701 } 702 703 static void 704 g_raid_md_sii_start(struct g_raid_softc *sc) 705 { 706 struct g_raid_md_object *md; 707 struct g_raid_md_sii_object *mdi; 708 struct g_raid_md_sii_perdisk *pd; 709 struct sii_raid_conf *meta; 710 struct g_raid_volume *vol; 711 struct g_raid_subdisk *sd; 712 struct g_raid_disk *disk, *best; 713 off_t size; 714 int j, disk_pos; 715 uint32_t gendiff, bestgendiff; 716 char buf[17]; 717 718 md = sc->sc_md; 719 mdi = (struct g_raid_md_sii_object *)md; 720 meta = mdi->mdio_meta; 721 722 /* Create volumes and subdisks. */ 723 sii_meta_get_name(meta, buf); 724 vol = g_raid_create_volume(sc, buf, -1); 725 vol->v_mediasize = (off_t)meta->total_sectors * 512; 726 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 727 if (meta->type == SII_T_RAID0) { 728 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0; 729 size = vol->v_mediasize / mdi->mdio_total_disks; 730 } else if (meta->type == SII_T_RAID1) { 731 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1; 732 size = vol->v_mediasize; 733 } else if (meta->type == SII_T_RAID01) { 734 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E; 735 size = vol->v_mediasize / (mdi->mdio_total_disks / 2); 736 } else if (meta->type == SII_T_CONCAT) { 737 if (mdi->mdio_total_disks == 1) 738 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 739 else 740 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT; 741 size = 0; 742 } else if (meta->type == SII_T_RAID5) { 743 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5; 744 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LS; 745 size = vol->v_mediasize / (mdi->mdio_total_disks - 1); 746 } else if (meta->type == SII_T_JBOD) { 747 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 748 size = 0; 749 } else { 750 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN; 751 size = 0; 752 } 753 vol->v_strip_size = meta->strip_sectors * 512; //ZZZ 754 vol->v_disks_count = mdi->mdio_total_disks; 755 vol->v_sectorsize = 512; //ZZZ 756 for (j = 0; j < vol->v_disks_count; j++) { 757 sd = &vol->v_subdisks[j]; 758 sd->sd_offset = 0; 759 sd->sd_size = size; 760 } 761 g_raid_start_volume(vol); 762 763 /* Create disk placeholders to store data for later writing. */ 764 for (disk_pos = 0; disk_pos < mdi->mdio_total_disks; disk_pos++) { 765 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 766 pd->pd_disk_pos = disk_pos; 767 disk = g_raid_create_disk(sc); 768 disk->d_md_data = (void *)pd; 769 disk->d_state = G_RAID_DISK_S_OFFLINE; 770 sd = &vol->v_subdisks[disk_pos]; 771 sd->sd_disk = disk; 772 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 773 } 774 775 /* 776 * Make all disks found till the moment take their places 777 * in order of their generation numbers. 778 */ 779 do { 780 best = NULL; 781 bestgendiff = 0xffffffff; 782 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 783 if (disk->d_state != G_RAID_DISK_S_NONE) 784 continue; 785 pd = disk->d_md_data; 786 if (pd->pd_meta == NULL) 787 gendiff = 0xfffffffe; 788 else 789 gendiff = meta->generation - 790 pd->pd_meta->generation; 791 if (gendiff < bestgendiff) { 792 best = disk; 793 bestgendiff = gendiff; 794 } 795 } 796 if (best != NULL) 797 g_raid_md_sii_start_disk(best); 798 } while (best != NULL); 799 800 mdi->mdio_started = 1; 801 G_RAID_DEBUG1(0, sc, "Array started."); 802 g_raid_md_write_sii(md, NULL, NULL, NULL); 803 804 /* Pickup any STALE/SPARE disks to refill array if needed. */ 805 g_raid_md_sii_refill(sc); 806 807 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME); 808 809 callout_stop(&mdi->mdio_start_co); 810 G_RAID_DEBUG1(1, sc, "root_mount_rel %p", mdi->mdio_rootmount); 811 root_mount_rel(mdi->mdio_rootmount); 812 mdi->mdio_rootmount = NULL; 813 } 814 815 static void 816 g_raid_md_sii_new_disk(struct g_raid_disk *disk) 817 { 818 struct g_raid_softc *sc; 819 struct g_raid_md_object *md; 820 struct g_raid_md_sii_object *mdi; 821 struct sii_raid_conf *pdmeta; 822 struct g_raid_md_sii_perdisk *pd; 823 824 sc = disk->d_softc; 825 md = sc->sc_md; 826 mdi = (struct g_raid_md_sii_object *)md; 827 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 828 pdmeta = pd->pd_meta; 829 830 if (mdi->mdio_started) { 831 if (g_raid_md_sii_start_disk(disk)) 832 g_raid_md_write_sii(md, NULL, NULL, NULL); 833 } else { 834 if (mdi->mdio_meta == NULL || 835 ((int32_t)(pdmeta->generation - mdi->mdio_generation)) > 0) { 836 G_RAID_DEBUG1(1, sc, "Newer disk"); 837 if (mdi->mdio_meta != NULL) 838 free(mdi->mdio_meta, M_MD_SII); 839 mdi->mdio_meta = sii_meta_copy(pdmeta); 840 mdi->mdio_generation = mdi->mdio_meta->generation; 841 mdi->mdio_total_disks = sii_meta_total_disks(pdmeta); 842 mdi->mdio_disks_present = 1; 843 } else if (pdmeta->generation == mdi->mdio_generation) { 844 mdi->mdio_disks_present++; 845 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)", 846 mdi->mdio_disks_present, 847 mdi->mdio_total_disks); 848 } else { 849 G_RAID_DEBUG1(1, sc, "Older disk"); 850 } 851 852 /* If we collected all needed disks - start array. */ 853 if (mdi->mdio_disks_present == mdi->mdio_total_disks) 854 g_raid_md_sii_start(sc); 855 } 856 } 857 858 static void 859 g_raid_sii_go(void *arg) 860 { 861 struct g_raid_softc *sc; 862 struct g_raid_md_object *md; 863 struct g_raid_md_sii_object *mdi; 864 865 sc = arg; 866 md = sc->sc_md; 867 mdi = (struct g_raid_md_sii_object *)md; 868 if (!mdi->mdio_started) { 869 G_RAID_DEBUG1(0, sc, "Force array start due to timeout."); 870 g_raid_event_send(sc, G_RAID_NODE_E_START, 0); 871 } 872 } 873 874 static int 875 g_raid_md_create_sii(struct g_raid_md_object *md, struct g_class *mp, 876 struct g_geom **gp) 877 { 878 struct g_raid_softc *sc; 879 struct g_raid_md_sii_object *mdi; 880 char name[32]; 881 882 mdi = (struct g_raid_md_sii_object *)md; 883 mdi->mdio_timestamp[5] = arc4random(); 884 mdi->mdio_timestamp[4] = arc4random(); 885 mdi->mdio_timestamp[3] = arc4random(); 886 mdi->mdio_timestamp[2] = arc4random(); 887 mdi->mdio_timestamp[1] = arc4random(); 888 mdi->mdio_timestamp[0] = arc4random(); 889 mdi->mdio_location = arc4random(); 890 mdi->mdio_generation = 0; 891 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x", 892 mdi->mdio_timestamp[5], mdi->mdio_timestamp[4], 893 mdi->mdio_timestamp[3], mdi->mdio_timestamp[2], 894 mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]); 895 sc = g_raid_create_node(mp, name, md); 896 if (sc == NULL) 897 return (G_RAID_MD_TASTE_FAIL); 898 md->mdo_softc = sc; 899 *gp = sc->sc_geom; 900 return (G_RAID_MD_TASTE_NEW); 901 } 902 903 static int 904 g_raid_md_taste_sii(struct g_raid_md_object *md, struct g_class *mp, 905 struct g_consumer *cp, struct g_geom **gp) 906 { 907 struct g_consumer *rcp; 908 struct g_provider *pp; 909 struct g_raid_md_sii_object *mdi, *mdi1; 910 struct g_raid_softc *sc; 911 struct g_raid_disk *disk; 912 struct sii_raid_conf *meta; 913 struct g_raid_md_sii_perdisk *pd; 914 struct g_geom *geom; 915 int disk_pos, result, spare, len; 916 char name[32]; 917 uint16_t vendor; 918 919 G_RAID_DEBUG(1, "Tasting SiI on %s", cp->provider->name); 920 mdi = (struct g_raid_md_sii_object *)md; 921 pp = cp->provider; 922 923 /* Read metadata from device. */ 924 meta = NULL; 925 vendor = 0xffff; 926 if (g_access(cp, 1, 0, 0) != 0) 927 return (G_RAID_MD_TASTE_FAIL); 928 g_topology_unlock(); 929 len = 2; 930 if (pp->geom->rank == 1) 931 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor); 932 meta = sii_meta_read(cp); 933 g_topology_lock(); 934 g_access(cp, -1, 0, 0); 935 if (meta == NULL) { 936 if (g_raid_aggressive_spare) { 937 if (vendor == 0x1095) { 938 G_RAID_DEBUG(1, 939 "No SiI metadata, forcing spare."); 940 spare = 2; 941 goto search; 942 } else { 943 G_RAID_DEBUG(1, 944 "SiI vendor mismatch 0x%04x != 0x1095", 945 vendor); 946 } 947 } 948 return (G_RAID_MD_TASTE_FAIL); 949 } 950 951 /* Check this disk position in obtained metadata. */ 952 disk_pos = sii_meta_disk_pos(meta, meta); 953 if (disk_pos == -1) { 954 G_RAID_DEBUG(1, "SiI disk position not found"); 955 goto fail1; 956 } 957 958 /* Metadata valid. Print it. */ 959 g_raid_md_sii_print(meta); 960 G_RAID_DEBUG(1, "SiI disk position %d", disk_pos); 961 spare = (meta->type == SII_T_SPARE) ? 1 : 0; 962 963 search: 964 /* Search for matching node. */ 965 sc = NULL; 966 mdi1 = NULL; 967 LIST_FOREACH(geom, &mp->geom, geom) { 968 sc = geom->softc; 969 if (sc == NULL) 970 continue; 971 if (sc->sc_stopping != 0) 972 continue; 973 if (sc->sc_md->mdo_class != md->mdo_class) 974 continue; 975 mdi1 = (struct g_raid_md_sii_object *)sc->sc_md; 976 if (spare) { 977 if (mdi1->mdio_incomplete) 978 break; 979 } else { 980 if (mdi1->mdio_location == meta->raid_location && 981 memcmp(&mdi1->mdio_timestamp, 982 &meta->timestamp, 6) == 0) 983 break; 984 } 985 } 986 987 /* Found matching node. */ 988 if (geom != NULL) { 989 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name); 990 result = G_RAID_MD_TASTE_EXISTING; 991 992 } else if (spare) { /* Not found needy node -- left for later. */ 993 G_RAID_DEBUG(1, "Spare is not needed at this time"); 994 goto fail1; 995 996 } else { /* Not found matching node -- create one. */ 997 result = G_RAID_MD_TASTE_NEW; 998 memcpy(&mdi->mdio_timestamp, &meta->timestamp, 6); 999 mdi->mdio_location = meta->raid_location; 1000 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x", 1001 mdi->mdio_timestamp[5], mdi->mdio_timestamp[4], 1002 mdi->mdio_timestamp[3], mdi->mdio_timestamp[2], 1003 mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]); 1004 sc = g_raid_create_node(mp, name, md); 1005 md->mdo_softc = sc; 1006 geom = sc->sc_geom; 1007 callout_init(&mdi->mdio_start_co, 1); 1008 callout_reset(&mdi->mdio_start_co, g_raid_start_timeout * hz, 1009 g_raid_sii_go, sc); 1010 mdi->mdio_rootmount = root_mount_hold("GRAID-SiI"); 1011 G_RAID_DEBUG1(1, sc, "root_mount_hold %p", mdi->mdio_rootmount); 1012 } 1013 1014 rcp = g_new_consumer(geom); 1015 g_attach(rcp, pp); 1016 if (g_access(rcp, 1, 1, 1) != 0) 1017 ; //goto fail1; 1018 1019 g_topology_unlock(); 1020 sx_xlock(&sc->sc_lock); 1021 1022 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1023 pd->pd_meta = meta; 1024 if (spare == 2) { 1025 pd->pd_disk_pos = -3; 1026 } else { 1027 pd->pd_disk_pos = -1; 1028 } 1029 pd->pd_disk_size = pp->mediasize; 1030 disk = g_raid_create_disk(sc); 1031 disk->d_md_data = (void *)pd; 1032 disk->d_consumer = rcp; 1033 rcp->private = disk; 1034 1035 g_raid_get_disk_info(disk); 1036 1037 g_raid_md_sii_new_disk(disk); 1038 1039 sx_xunlock(&sc->sc_lock); 1040 g_topology_lock(); 1041 *gp = geom; 1042 return (result); 1043 fail1: 1044 free(meta, M_MD_SII); 1045 return (G_RAID_MD_TASTE_FAIL); 1046 } 1047 1048 static int 1049 g_raid_md_event_sii(struct g_raid_md_object *md, 1050 struct g_raid_disk *disk, u_int event) 1051 { 1052 struct g_raid_softc *sc; 1053 struct g_raid_subdisk *sd; 1054 struct g_raid_md_sii_object *mdi; 1055 struct g_raid_md_sii_perdisk *pd; 1056 1057 sc = md->mdo_softc; 1058 mdi = (struct g_raid_md_sii_object *)md; 1059 if (disk == NULL) { 1060 switch (event) { 1061 case G_RAID_NODE_E_START: 1062 if (!mdi->mdio_started) 1063 g_raid_md_sii_start(sc); 1064 return (0); 1065 } 1066 return (-1); 1067 } 1068 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1069 switch (event) { 1070 case G_RAID_DISK_E_DISCONNECTED: 1071 /* If disk was assigned, just update statuses. */ 1072 if (pd->pd_disk_pos >= 0) { 1073 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1074 if (disk->d_consumer) { 1075 g_raid_kill_consumer(sc, disk->d_consumer); 1076 disk->d_consumer = NULL; 1077 } 1078 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 1079 g_raid_change_subdisk_state(sd, 1080 G_RAID_SUBDISK_S_NONE); 1081 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED, 1082 G_RAID_EVENT_SUBDISK); 1083 } 1084 } else { 1085 /* Otherwise -- delete. */ 1086 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1087 g_raid_destroy_disk(disk); 1088 } 1089 1090 /* Write updated metadata to all disks. */ 1091 g_raid_md_write_sii(md, NULL, NULL, NULL); 1092 1093 /* Check if anything left except placeholders. */ 1094 if (g_raid_ndisks(sc, -1) == 1095 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1096 g_raid_destroy_node(sc, 0); 1097 else 1098 g_raid_md_sii_refill(sc); 1099 return (0); 1100 } 1101 return (-2); 1102 } 1103 1104 static int 1105 g_raid_md_ctl_sii(struct g_raid_md_object *md, 1106 struct gctl_req *req) 1107 { 1108 struct g_raid_softc *sc; 1109 struct g_raid_volume *vol; 1110 struct g_raid_subdisk *sd; 1111 struct g_raid_disk *disk; 1112 struct g_raid_md_sii_object *mdi; 1113 struct g_raid_md_sii_perdisk *pd; 1114 struct g_consumer *cp; 1115 struct g_provider *pp; 1116 char arg[16]; 1117 const char *verb, *volname, *levelname, *diskname; 1118 int *nargs, *force; 1119 off_t size, sectorsize, strip; 1120 intmax_t *sizearg, *striparg; 1121 int numdisks, i, len, level, qual, update; 1122 int error; 1123 1124 sc = md->mdo_softc; 1125 mdi = (struct g_raid_md_sii_object *)md; 1126 verb = gctl_get_param(req, "verb", NULL); 1127 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 1128 error = 0; 1129 if (strcmp(verb, "label") == 0) { 1130 1131 if (*nargs < 4) { 1132 gctl_error(req, "Invalid number of arguments."); 1133 return (-1); 1134 } 1135 volname = gctl_get_asciiparam(req, "arg1"); 1136 if (volname == NULL) { 1137 gctl_error(req, "No volume name."); 1138 return (-2); 1139 } 1140 levelname = gctl_get_asciiparam(req, "arg2"); 1141 if (levelname == NULL) { 1142 gctl_error(req, "No RAID level."); 1143 return (-3); 1144 } 1145 if (strcasecmp(levelname, "RAID5") == 0) 1146 levelname = "RAID5-LS"; 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 g_raid_get_disk_info(disk); 1198 1199 pd->pd_disk_size = pp->mediasize; 1200 if (size > pp->mediasize) 1201 size = pp->mediasize; 1202 if (sectorsize < pp->sectorsize) 1203 sectorsize = pp->sectorsize; 1204 } 1205 if (error != 0) 1206 return (error); 1207 1208 if (sectorsize <= 0) { 1209 gctl_error(req, "Can't get sector size."); 1210 return (-8); 1211 } 1212 1213 /* Reserve space for metadata. */ 1214 size -= 0x800 * sectorsize; 1215 1216 /* Handle size argument. */ 1217 len = sizeof(*sizearg); 1218 sizearg = gctl_get_param(req, "size", &len); 1219 if (sizearg != NULL && len == sizeof(*sizearg) && 1220 *sizearg > 0) { 1221 if (*sizearg > size) { 1222 gctl_error(req, "Size too big %lld > %lld.", 1223 (long long)*sizearg, (long long)size); 1224 return (-9); 1225 } 1226 size = *sizearg; 1227 } 1228 1229 /* Handle strip argument. */ 1230 strip = 131072; 1231 len = sizeof(*striparg); 1232 striparg = gctl_get_param(req, "strip", &len); 1233 if (striparg != NULL && len == sizeof(*striparg) && 1234 *striparg > 0) { 1235 if (*striparg < sectorsize) { 1236 gctl_error(req, "Strip size too small."); 1237 return (-10); 1238 } 1239 if (*striparg % sectorsize != 0) { 1240 gctl_error(req, "Incorrect strip size."); 1241 return (-11); 1242 } 1243 if (strip > 65535 * sectorsize) { 1244 gctl_error(req, "Strip size too big."); 1245 return (-12); 1246 } 1247 strip = *striparg; 1248 } 1249 1250 /* Round size down to strip or sector. */ 1251 if (level == G_RAID_VOLUME_RL_RAID1) 1252 size -= (size % sectorsize); 1253 else if (level == G_RAID_VOLUME_RL_RAID1E && 1254 (numdisks & 1) != 0) 1255 size -= (size % (2 * strip)); 1256 else 1257 size -= (size % strip); 1258 if (size <= 0) { 1259 gctl_error(req, "Size too small."); 1260 return (-13); 1261 } 1262 if (size > 0xffffffffffffllu * sectorsize) { 1263 gctl_error(req, "Size too big."); 1264 return (-14); 1265 } 1266 1267 /* We have all we need, create things: volume, ... */ 1268 mdi->mdio_total_disks = numdisks; 1269 mdi->mdio_started = 1; 1270 vol = g_raid_create_volume(sc, volname, -1); 1271 vol->v_md_data = (void *)(intptr_t)0; 1272 vol->v_raid_level = level; 1273 vol->v_raid_level_qualifier = qual; 1274 vol->v_strip_size = strip; 1275 vol->v_disks_count = numdisks; 1276 if (level == G_RAID_VOLUME_RL_RAID0 || 1277 level == G_RAID_VOLUME_RL_CONCAT || 1278 level == G_RAID_VOLUME_RL_SINGLE) 1279 vol->v_mediasize = size * numdisks; 1280 else if (level == G_RAID_VOLUME_RL_RAID1) 1281 vol->v_mediasize = size; 1282 else if (level == G_RAID_VOLUME_RL_RAID5) 1283 vol->v_mediasize = size * (numdisks - 1); 1284 else { /* RAID1E */ 1285 vol->v_mediasize = ((size * numdisks) / strip / 2) * 1286 strip; 1287 } 1288 vol->v_sectorsize = sectorsize; 1289 g_raid_start_volume(vol); 1290 1291 /* , and subdisks. */ 1292 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1293 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1294 sd = &vol->v_subdisks[pd->pd_disk_pos]; 1295 sd->sd_disk = disk; 1296 sd->sd_offset = 0; 1297 sd->sd_size = size; 1298 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 1299 if (sd->sd_disk->d_consumer != NULL) { 1300 g_raid_change_disk_state(disk, 1301 G_RAID_DISK_S_ACTIVE); 1302 g_raid_change_subdisk_state(sd, 1303 G_RAID_SUBDISK_S_ACTIVE); 1304 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 1305 G_RAID_EVENT_SUBDISK); 1306 } else { 1307 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1308 } 1309 } 1310 1311 /* Write metadata based on created entities. */ 1312 G_RAID_DEBUG1(0, sc, "Array started."); 1313 g_raid_md_write_sii(md, NULL, NULL, NULL); 1314 1315 /* Pickup any STALE/SPARE disks to refill array if needed. */ 1316 g_raid_md_sii_refill(sc); 1317 1318 g_raid_event_send(vol, G_RAID_VOLUME_E_START, 1319 G_RAID_EVENT_VOLUME); 1320 return (0); 1321 } 1322 if (strcmp(verb, "delete") == 0) { 1323 1324 /* Check if some volume is still open. */ 1325 force = gctl_get_paraml(req, "force", sizeof(*force)); 1326 if (force != NULL && *force == 0 && 1327 g_raid_nopens(sc) != 0) { 1328 gctl_error(req, "Some volume is still open."); 1329 return (-4); 1330 } 1331 1332 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1333 if (disk->d_consumer) 1334 sii_meta_erase(disk->d_consumer); 1335 } 1336 g_raid_destroy_node(sc, 0); 1337 return (0); 1338 } 1339 if (strcmp(verb, "remove") == 0 || 1340 strcmp(verb, "fail") == 0) { 1341 if (*nargs < 2) { 1342 gctl_error(req, "Invalid number of arguments."); 1343 return (-1); 1344 } 1345 for (i = 1; i < *nargs; i++) { 1346 snprintf(arg, sizeof(arg), "arg%d", i); 1347 diskname = gctl_get_asciiparam(req, arg); 1348 if (diskname == NULL) { 1349 gctl_error(req, "No disk name (%s).", arg); 1350 error = -2; 1351 break; 1352 } 1353 if (strncmp(diskname, "/dev/", 5) == 0) 1354 diskname += 5; 1355 1356 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1357 if (disk->d_consumer != NULL && 1358 disk->d_consumer->provider != NULL && 1359 strcmp(disk->d_consumer->provider->name, 1360 diskname) == 0) 1361 break; 1362 } 1363 if (disk == NULL) { 1364 gctl_error(req, "Disk '%s' not found.", 1365 diskname); 1366 error = -3; 1367 break; 1368 } 1369 1370 if (strcmp(verb, "fail") == 0) { 1371 g_raid_md_fail_disk_sii(md, NULL, disk); 1372 continue; 1373 } 1374 1375 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1376 1377 /* Erase metadata on deleting disk. */ 1378 sii_meta_erase(disk->d_consumer); 1379 1380 /* If disk was assigned, just update statuses. */ 1381 if (pd->pd_disk_pos >= 0) { 1382 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1383 g_raid_kill_consumer(sc, disk->d_consumer); 1384 disk->d_consumer = NULL; 1385 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 1386 g_raid_change_subdisk_state(sd, 1387 G_RAID_SUBDISK_S_NONE); 1388 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED, 1389 G_RAID_EVENT_SUBDISK); 1390 } 1391 } else { 1392 /* Otherwise -- delete. */ 1393 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1394 g_raid_destroy_disk(disk); 1395 } 1396 } 1397 1398 /* Write updated metadata to remaining disks. */ 1399 g_raid_md_write_sii(md, NULL, NULL, NULL); 1400 1401 /* Check if anything left except placeholders. */ 1402 if (g_raid_ndisks(sc, -1) == 1403 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1404 g_raid_destroy_node(sc, 0); 1405 else 1406 g_raid_md_sii_refill(sc); 1407 return (error); 1408 } 1409 if (strcmp(verb, "insert") == 0) { 1410 if (*nargs < 2) { 1411 gctl_error(req, "Invalid number of arguments."); 1412 return (-1); 1413 } 1414 update = 0; 1415 for (i = 1; i < *nargs; i++) { 1416 /* Get disk name. */ 1417 snprintf(arg, sizeof(arg), "arg%d", i); 1418 diskname = gctl_get_asciiparam(req, arg); 1419 if (diskname == NULL) { 1420 gctl_error(req, "No disk name (%s).", arg); 1421 error = -3; 1422 break; 1423 } 1424 1425 /* Try to find provider with specified name. */ 1426 g_topology_lock(); 1427 cp = g_raid_open_consumer(sc, diskname); 1428 if (cp == NULL) { 1429 gctl_error(req, "Can't open disk '%s'.", 1430 diskname); 1431 g_topology_unlock(); 1432 error = -4; 1433 break; 1434 } 1435 pp = cp->provider; 1436 1437 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1438 pd->pd_disk_pos = -3; 1439 pd->pd_disk_size = pp->mediasize; 1440 1441 disk = g_raid_create_disk(sc); 1442 disk->d_consumer = cp; 1443 disk->d_md_data = (void *)pd; 1444 cp->private = disk; 1445 g_topology_unlock(); 1446 1447 g_raid_get_disk_info(disk); 1448 1449 /* Welcome the "new" disk. */ 1450 update += g_raid_md_sii_start_disk(disk); 1451 if (disk->d_state == G_RAID_DISK_S_SPARE) { 1452 sii_meta_write_spare(cp); 1453 g_raid_destroy_disk(disk); 1454 } else if (disk->d_state != G_RAID_DISK_S_ACTIVE) { 1455 gctl_error(req, "Disk '%s' doesn't fit.", 1456 diskname); 1457 g_raid_destroy_disk(disk); 1458 error = -8; 1459 break; 1460 } 1461 } 1462 1463 /* Write new metadata if we changed something. */ 1464 if (update) 1465 g_raid_md_write_sii(md, NULL, NULL, NULL); 1466 return (error); 1467 } 1468 gctl_error(req, "Command '%s' is not supported.", verb); 1469 return (-100); 1470 } 1471 1472 static int 1473 g_raid_md_write_sii(struct g_raid_md_object *md, struct g_raid_volume *tvol, 1474 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1475 { 1476 struct g_raid_softc *sc; 1477 struct g_raid_volume *vol; 1478 struct g_raid_subdisk *sd; 1479 struct g_raid_disk *disk; 1480 struct g_raid_md_sii_object *mdi; 1481 struct g_raid_md_sii_perdisk *pd; 1482 struct sii_raid_conf *meta; 1483 int i; 1484 1485 sc = md->mdo_softc; 1486 mdi = (struct g_raid_md_sii_object *)md; 1487 1488 if (sc->sc_stopping == G_RAID_DESTROY_HARD) 1489 return (0); 1490 1491 /* Bump generation. Newly written metadata may differ from previous. */ 1492 mdi->mdio_generation++; 1493 1494 /* There is only one volume. */ 1495 vol = TAILQ_FIRST(&sc->sc_volumes); 1496 1497 /* Fill global fields. */ 1498 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO); 1499 if (mdi->mdio_meta) 1500 memcpy(meta, mdi->mdio_meta, sizeof(*meta)); 1501 meta->total_sectors = vol->v_mediasize / vol->v_sectorsize; 1502 meta->vendor_id = 0x1095; 1503 meta->version_minor = 0; 1504 meta->version_major = 2; 1505 memcpy(&meta->timestamp, &mdi->mdio_timestamp, 6); 1506 meta->strip_sectors = vol->v_strip_size / vol->v_sectorsize; 1507 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0) { 1508 meta->type = SII_T_RAID0; 1509 meta->raid0_disks = vol->v_disks_count; 1510 meta->raid1_disks = 0xff; 1511 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) { 1512 meta->type = SII_T_RAID1; 1513 meta->raid0_disks = 0xff; 1514 meta->raid1_disks = vol->v_disks_count; 1515 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1516 meta->type = SII_T_RAID01; 1517 meta->raid0_disks = vol->v_disks_count / 2; 1518 meta->raid1_disks = 2; 1519 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT || 1520 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) { 1521 meta->type = SII_T_JBOD; 1522 meta->raid0_disks = vol->v_disks_count; 1523 meta->raid1_disks = 0xff; 1524 } else { 1525 meta->type = SII_T_RAID5; 1526 meta->raid0_disks = vol->v_disks_count; 1527 meta->raid1_disks = 0xff; 1528 } 1529 meta->generation = mdi->mdio_generation; 1530 meta->raid_status = vol->v_dirty ? SII_S_ONLINE : SII_S_AVAILABLE; 1531 for (i = 0; i < vol->v_disks_count; i++) { 1532 sd = &vol->v_subdisks[i]; 1533 if (sd->sd_state == G_RAID_SUBDISK_S_STALE || 1534 sd->sd_state == G_RAID_SUBDISK_S_RESYNC) 1535 meta->raid_status = SII_S_ONLINE; 1536 } 1537 meta->raid_location = mdi->mdio_location; 1538 sii_meta_put_name(meta, vol->v_name); 1539 1540 /* We are done. Print meta data and store them to disks. */ 1541 if (mdi->mdio_meta != NULL) 1542 free(mdi->mdio_meta, M_MD_SII); 1543 mdi->mdio_meta = meta; 1544 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1545 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1546 if (disk->d_state != G_RAID_DISK_S_ACTIVE) 1547 continue; 1548 if (pd->pd_meta != NULL) { 1549 free(pd->pd_meta, M_MD_SII); 1550 pd->pd_meta = NULL; 1551 } 1552 pd->pd_meta = sii_meta_copy(meta); 1553 if ((sd = TAILQ_FIRST(&disk->d_subdisks)) != NULL) { 1554 if (sd->sd_state < G_RAID_SUBDISK_S_NEW) 1555 pd->pd_meta->disk_status = SII_S_DROPPED; 1556 else if (sd->sd_state < G_RAID_SUBDISK_S_STALE) { 1557 pd->pd_meta->disk_status = SII_S_REBUILD; 1558 pd->pd_meta->rebuild_lba = 1559 sd->sd_rebuild_pos / vol->v_sectorsize; 1560 } else 1561 pd->pd_meta->disk_status = SII_S_CURRENT; 1562 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) { 1563 pd->pd_meta->disk_number = sd->sd_pos; 1564 pd->pd_meta->raid0_ident = 0xff; 1565 pd->pd_meta->raid1_ident = 0; 1566 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1567 pd->pd_meta->disk_number = sd->sd_pos / meta->raid1_disks; 1568 pd->pd_meta->raid0_ident = sd->sd_pos % meta->raid1_disks; 1569 pd->pd_meta->raid1_ident = sd->sd_pos / meta->raid1_disks; 1570 } else { 1571 pd->pd_meta->disk_number = sd->sd_pos; 1572 pd->pd_meta->raid0_ident = 0; 1573 pd->pd_meta->raid1_ident = 0xff; 1574 } 1575 } 1576 G_RAID_DEBUG(1, "Writing SiI metadata to %s", 1577 g_raid_get_diskname(disk)); 1578 g_raid_md_sii_print(pd->pd_meta); 1579 sii_meta_write(disk->d_consumer, pd->pd_meta); 1580 } 1581 return (0); 1582 } 1583 1584 static int 1585 g_raid_md_fail_disk_sii(struct g_raid_md_object *md, 1586 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1587 { 1588 struct g_raid_softc *sc; 1589 struct g_raid_md_sii_perdisk *pd; 1590 struct g_raid_subdisk *sd; 1591 1592 sc = md->mdo_softc; 1593 pd = (struct g_raid_md_sii_perdisk *)tdisk->d_md_data; 1594 1595 /* We can't fail disk that is not a part of array now. */ 1596 if (pd->pd_disk_pos < 0) 1597 return (-1); 1598 1599 /* 1600 * Mark disk as failed in metadata and try to write that metadata 1601 * to the disk itself to prevent it's later resurrection as STALE. 1602 */ 1603 if (tdisk->d_consumer) { 1604 if (pd->pd_meta) { 1605 pd->pd_meta->disk_status = SII_S_REMOVED; 1606 sii_meta_write(tdisk->d_consumer, pd->pd_meta); 1607 } else 1608 sii_meta_erase(tdisk->d_consumer); 1609 } 1610 1611 /* Change states. */ 1612 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED); 1613 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) { 1614 g_raid_change_subdisk_state(sd, 1615 G_RAID_SUBDISK_S_FAILED); 1616 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED, 1617 G_RAID_EVENT_SUBDISK); 1618 } 1619 1620 /* Write updated metadata to remaining disks. */ 1621 g_raid_md_write_sii(md, NULL, NULL, tdisk); 1622 1623 /* Check if anything left except placeholders. */ 1624 if (g_raid_ndisks(sc, -1) == 1625 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1626 g_raid_destroy_node(sc, 0); 1627 else 1628 g_raid_md_sii_refill(sc); 1629 return (0); 1630 } 1631 1632 static int 1633 g_raid_md_free_disk_sii(struct g_raid_md_object *md, 1634 struct g_raid_disk *disk) 1635 { 1636 struct g_raid_md_sii_perdisk *pd; 1637 1638 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1639 if (pd->pd_meta != NULL) { 1640 free(pd->pd_meta, M_MD_SII); 1641 pd->pd_meta = NULL; 1642 } 1643 free(pd, M_MD_SII); 1644 disk->d_md_data = NULL; 1645 return (0); 1646 } 1647 1648 static int 1649 g_raid_md_free_sii(struct g_raid_md_object *md) 1650 { 1651 struct g_raid_md_sii_object *mdi; 1652 1653 mdi = (struct g_raid_md_sii_object *)md; 1654 if (!mdi->mdio_started) { 1655 mdi->mdio_started = 0; 1656 callout_stop(&mdi->mdio_start_co); 1657 G_RAID_DEBUG1(1, md->mdo_softc, 1658 "root_mount_rel %p", mdi->mdio_rootmount); 1659 root_mount_rel(mdi->mdio_rootmount); 1660 mdi->mdio_rootmount = NULL; 1661 } 1662 if (mdi->mdio_meta != NULL) { 1663 free(mdi->mdio_meta, M_MD_SII); 1664 mdi->mdio_meta = NULL; 1665 } 1666 return (0); 1667 } 1668 1669 G_RAID_MD_DECLARE(sii, "SiI");
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