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