1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 if (pp->sectorsize < sizeof(*meta)) 275 return (NULL); 276 /* Read the anchor sector. */ 277 buf = g_read_data(cp, 278 pp->mediasize - pp->sectorsize, pp->sectorsize, &error); 279 if (buf == NULL) { 280 G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).", 281 pp->name, error); 282 return (NULL); 283 } 284 meta = (struct sii_raid_conf *)buf; 285 286 /* Check vendor ID. */ 287 if (meta->vendor_id != 0x1095) { 288 G_RAID_DEBUG(1, "SiI vendor ID check failed on %s (0x%04x)", 289 pp->name, meta->vendor_id); 290 g_free(buf); 291 return (NULL); 292 } 293 294 /* Check metadata major version. */ 295 if (meta->version_major != 2) { 296 G_RAID_DEBUG(1, "SiI version check failed on %s (%d.%d)", 297 pp->name, meta->version_major, meta->version_minor); 298 g_free(buf); 299 return (NULL); 300 } 301 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK); 302 memcpy(meta, buf, min(sizeof(*meta), pp->sectorsize)); 303 g_free(buf); 304 305 /* Check metadata checksum. */ 306 for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i <= 159; i++) 307 checksum += *ptr++; 308 if (checksum != 0) { 309 G_RAID_DEBUG(1, "SiI checksum check failed on %s", pp->name); 310 free(meta, M_MD_SII); 311 return (NULL); 312 } 313 314 /* Check raid type. */ 315 if (meta->type != SII_T_RAID0 && meta->type != SII_T_RAID1 && 316 meta->type != SII_T_RAID01 && meta->type != SII_T_SPARE && 317 meta->type != SII_T_RAID5 && meta->type != SII_T_CONCAT && 318 meta->type != SII_T_JBOD) { 319 G_RAID_DEBUG(1, "SiI unknown RAID level on %s (0x%02x)", 320 pp->name, meta->type); 321 free(meta, M_MD_SII); 322 return (NULL); 323 } 324 325 return (meta); 326 } 327 328 static int 329 sii_meta_write(struct g_consumer *cp, struct sii_raid_conf *meta) 330 { 331 struct g_provider *pp; 332 char *buf; 333 int error, i; 334 uint16_t checksum, *ptr; 335 336 pp = cp->provider; 337 338 /* Recalculate checksum for case if metadata were changed. */ 339 meta->checksum = 0; 340 for (checksum = 0, ptr = (uint16_t *)meta, i = 0; i < 159; i++) 341 checksum += *ptr++; 342 meta->checksum -= checksum; 343 344 /* Create and fill buffer. */ 345 buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO); 346 memcpy(buf, meta, sizeof(*meta)); 347 348 /* Write 4 copies of metadata. */ 349 for (i = 0; i < 4; i++) { 350 error = g_write_data(cp, 351 pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)), 352 buf, pp->sectorsize); 353 if (error != 0) { 354 G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).", 355 pp->name, error); 356 break; 357 } 358 } 359 360 free(buf, M_MD_SII); 361 return (error); 362 } 363 364 static int 365 sii_meta_erase(struct g_consumer *cp) 366 { 367 struct g_provider *pp; 368 char *buf; 369 int error, i; 370 371 pp = cp->provider; 372 buf = malloc(pp->sectorsize, M_MD_SII, M_WAITOK | M_ZERO); 373 /* Write 4 copies of metadata. */ 374 for (i = 0; i < 4; i++) { 375 error = g_write_data(cp, 376 pp->mediasize - (pp->sectorsize * (1 + 0x200 * i)), 377 buf, pp->sectorsize); 378 if (error != 0) { 379 G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).", 380 pp->name, error); 381 } 382 } 383 free(buf, M_MD_SII); 384 return (error); 385 } 386 387 static int 388 sii_meta_write_spare(struct g_consumer *cp) 389 { 390 struct sii_raid_conf *meta; 391 int error; 392 393 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO); 394 meta->total_sectors = cp->provider->mediasize / 395 cp->provider->sectorsize - 0x800; 396 meta->vendor_id = 0x1095; 397 meta->version_minor = 0; 398 meta->version_major = 2; 399 meta->timestamp[0] = arc4random(); 400 meta->timestamp[1] = arc4random(); 401 meta->timestamp[2] = arc4random(); 402 meta->timestamp[3] = arc4random(); 403 meta->timestamp[4] = arc4random(); 404 meta->timestamp[5] = arc4random(); 405 meta->type = SII_T_SPARE; 406 meta->generation = 1; 407 meta->raid1_ident = 0xff; 408 meta->raid_location = arc4random(); 409 error = sii_meta_write(cp, meta); 410 free(meta, M_MD_SII); 411 return (error); 412 } 413 414 static struct g_raid_disk * 415 g_raid_md_sii_get_disk(struct g_raid_softc *sc, int id) 416 { 417 struct g_raid_disk *disk; 418 struct g_raid_md_sii_perdisk *pd; 419 420 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 421 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 422 if (pd->pd_disk_pos == id) 423 break; 424 } 425 return (disk); 426 } 427 428 static int 429 g_raid_md_sii_supported(int level, int qual, int disks, int force) 430 { 431 432 if (disks > 8) 433 return (0); 434 switch (level) { 435 case G_RAID_VOLUME_RL_RAID0: 436 if (disks < 1) 437 return (0); 438 if (!force && (disks < 2 || disks > 6)) 439 return (0); 440 break; 441 case G_RAID_VOLUME_RL_RAID1: 442 if (disks < 1) 443 return (0); 444 if (!force && (disks != 2)) 445 return (0); 446 break; 447 case G_RAID_VOLUME_RL_RAID1E: 448 if (disks < 2) 449 return (0); 450 if (disks % 2 != 0) 451 return (0); 452 if (!force && (disks < 4)) 453 return (0); 454 break; 455 case G_RAID_VOLUME_RL_SINGLE: 456 if (disks != 1) 457 return (0); 458 break; 459 case G_RAID_VOLUME_RL_CONCAT: 460 if (disks < 2) 461 return (0); 462 break; 463 case G_RAID_VOLUME_RL_RAID5: 464 if (disks < 3) 465 return (0); 466 if (qual != G_RAID_VOLUME_RLQ_R5LS) 467 return (0); 468 break; 469 default: 470 return (0); 471 } 472 if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE) 473 return (0); 474 return (1); 475 } 476 477 static int 478 g_raid_md_sii_start_disk(struct g_raid_disk *disk) 479 { 480 struct g_raid_softc *sc; 481 struct g_raid_subdisk *sd, *tmpsd; 482 struct g_raid_disk *olddisk, *tmpdisk; 483 struct g_raid_md_object *md; 484 struct g_raid_md_sii_object *mdi; 485 struct g_raid_md_sii_perdisk *pd, *oldpd; 486 struct sii_raid_conf *meta; 487 int disk_pos, resurrection = 0; 488 489 sc = disk->d_softc; 490 md = sc->sc_md; 491 mdi = (struct g_raid_md_sii_object *)md; 492 meta = mdi->mdio_meta; 493 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 494 olddisk = NULL; 495 496 /* Find disk position in metadata by its serial. */ 497 if (pd->pd_meta != NULL) 498 disk_pos = sii_meta_disk_pos(meta, pd->pd_meta); 499 else 500 disk_pos = -3; 501 if (disk_pos < 0) { 502 G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk"); 503 /* If we are in the start process, that's all for now. */ 504 if (!mdi->mdio_started) 505 goto nofit; 506 /* 507 * If we have already started - try to get use of the disk. 508 * Try to replace OFFLINE disks first, then FAILED. 509 */ 510 TAILQ_FOREACH(tmpdisk, &sc->sc_disks, d_next) { 511 if (tmpdisk->d_state != G_RAID_DISK_S_OFFLINE && 512 tmpdisk->d_state != G_RAID_DISK_S_FAILED) 513 continue; 514 /* Make sure this disk is big enough. */ 515 TAILQ_FOREACH(sd, &tmpdisk->d_subdisks, sd_next) { 516 if (sd->sd_offset + sd->sd_size + 512 > 517 pd->pd_disk_size) { 518 G_RAID_DEBUG1(1, sc, 519 "Disk too small (%ju < %ju)", 520 pd->pd_disk_size, 521 sd->sd_offset + sd->sd_size + 512); 522 break; 523 } 524 } 525 if (sd != NULL) 526 continue; 527 if (tmpdisk->d_state == G_RAID_DISK_S_OFFLINE) { 528 olddisk = tmpdisk; 529 break; 530 } else if (olddisk == NULL) 531 olddisk = tmpdisk; 532 } 533 if (olddisk == NULL) { 534 nofit: 535 if (disk_pos == -3 || pd->pd_disk_pos == -3) { 536 g_raid_change_disk_state(disk, 537 G_RAID_DISK_S_SPARE); 538 return (1); 539 } else { 540 g_raid_change_disk_state(disk, 541 G_RAID_DISK_S_STALE); 542 return (0); 543 } 544 } 545 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data; 546 disk_pos = oldpd->pd_disk_pos; 547 resurrection = 1; 548 } 549 550 if (olddisk == NULL) { 551 /* Find placeholder by position. */ 552 olddisk = g_raid_md_sii_get_disk(sc, disk_pos); 553 if (olddisk == NULL) 554 panic("No disk at position %d!", disk_pos); 555 if (olddisk->d_state != G_RAID_DISK_S_OFFLINE) { 556 G_RAID_DEBUG1(1, sc, "More than one disk for pos %d", 557 disk_pos); 558 g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE); 559 return (0); 560 } 561 oldpd = (struct g_raid_md_sii_perdisk *)olddisk->d_md_data; 562 } 563 564 /* Replace failed disk or placeholder with new disk. */ 565 TAILQ_FOREACH_SAFE(sd, &olddisk->d_subdisks, sd_next, tmpsd) { 566 TAILQ_REMOVE(&olddisk->d_subdisks, sd, sd_next); 567 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 568 sd->sd_disk = disk; 569 } 570 oldpd->pd_disk_pos = -2; 571 pd->pd_disk_pos = disk_pos; 572 573 /* If it was placeholder -- destroy it. */ 574 if (olddisk->d_state == G_RAID_DISK_S_OFFLINE) { 575 g_raid_destroy_disk(olddisk); 576 } else { 577 /* Otherwise, make it STALE_FAILED. */ 578 g_raid_change_disk_state(olddisk, G_RAID_DISK_S_STALE_FAILED); 579 } 580 581 /* Welcome the new disk. */ 582 if (resurrection) 583 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 584 else if (pd->pd_meta->disk_status == SII_S_CURRENT || 585 pd->pd_meta->disk_status == SII_S_REBUILD) 586 g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE); 587 else 588 g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED); 589 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 590 /* 591 * Different disks may have different sizes, 592 * in concat mode. Update from real disk size. 593 */ 594 if (meta->type == SII_T_CONCAT || meta->type == SII_T_JBOD) 595 sd->sd_size = pd->pd_disk_size - 0x800 * 512; 596 597 if (resurrection) { 598 /* New or ex-spare disk. */ 599 g_raid_change_subdisk_state(sd, 600 G_RAID_SUBDISK_S_NEW); 601 } else if (pd->pd_meta->disk_status == SII_S_REBUILD) { 602 /* Rebuilding disk. */ 603 g_raid_change_subdisk_state(sd, 604 G_RAID_SUBDISK_S_REBUILD); 605 if (pd->pd_meta->generation == meta->generation) 606 sd->sd_rebuild_pos = pd->pd_meta->rebuild_lba * 512; 607 else 608 sd->sd_rebuild_pos = 0; 609 } else if (pd->pd_meta->disk_status == SII_S_CURRENT) { 610 if (pd->pd_meta->raid_status == SII_S_ONLINE || 611 pd->pd_meta->generation != meta->generation) { 612 /* Dirty or resyncing disk. */ 613 g_raid_change_subdisk_state(sd, 614 G_RAID_SUBDISK_S_STALE); 615 } else { 616 /* Up to date disk. */ 617 g_raid_change_subdisk_state(sd, 618 G_RAID_SUBDISK_S_ACTIVE); 619 } 620 } else { 621 g_raid_change_subdisk_state(sd, 622 G_RAID_SUBDISK_S_FAILED); 623 } 624 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 625 G_RAID_EVENT_SUBDISK); 626 } 627 628 /* Update status of our need for spare. */ 629 if (mdi->mdio_started) { 630 mdi->mdio_incomplete = 631 (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) < 632 mdi->mdio_total_disks); 633 } 634 635 return (resurrection); 636 } 637 638 static void 639 g_disk_md_sii_retaste(void *arg, int pending) 640 { 641 642 G_RAID_DEBUG(1, "Array is not complete, trying to retaste."); 643 g_retaste(&g_raid_class); 644 free(arg, M_MD_SII); 645 } 646 647 static void 648 g_raid_md_sii_refill(struct g_raid_softc *sc) 649 { 650 struct g_raid_md_object *md; 651 struct g_raid_md_sii_object *mdi; 652 struct g_raid_disk *disk; 653 struct task *task; 654 int update, na; 655 656 md = sc->sc_md; 657 mdi = (struct g_raid_md_sii_object *)md; 658 update = 0; 659 do { 660 /* Make sure we miss anything. */ 661 na = g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE); 662 if (na == mdi->mdio_total_disks) 663 break; 664 665 G_RAID_DEBUG1(1, md->mdo_softc, 666 "Array is not complete (%d of %d), " 667 "trying to refill.", na, mdi->mdio_total_disks); 668 669 /* Try to get use some of STALE disks. */ 670 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 671 if (disk->d_state == G_RAID_DISK_S_STALE) { 672 update += g_raid_md_sii_start_disk(disk); 673 if (disk->d_state == G_RAID_DISK_S_ACTIVE) 674 break; 675 } 676 } 677 if (disk != NULL) 678 continue; 679 680 /* Try to get use some of SPARE disks. */ 681 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 682 if (disk->d_state == G_RAID_DISK_S_SPARE) { 683 update += g_raid_md_sii_start_disk(disk); 684 if (disk->d_state == G_RAID_DISK_S_ACTIVE) 685 break; 686 } 687 } 688 } while (disk != NULL); 689 690 /* Write new metadata if we changed something. */ 691 if (update) 692 g_raid_md_write_sii(md, NULL, NULL, NULL); 693 694 /* Update status of our need for spare. */ 695 mdi->mdio_incomplete = (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) < 696 mdi->mdio_total_disks); 697 698 /* Request retaste hoping to find spare. */ 699 if (mdi->mdio_incomplete) { 700 task = malloc(sizeof(struct task), 701 M_MD_SII, M_WAITOK | M_ZERO); 702 TASK_INIT(task, 0, g_disk_md_sii_retaste, task); 703 taskqueue_enqueue(taskqueue_swi, task); 704 } 705 } 706 707 static void 708 g_raid_md_sii_start(struct g_raid_softc *sc) 709 { 710 struct g_raid_md_object *md; 711 struct g_raid_md_sii_object *mdi; 712 struct g_raid_md_sii_perdisk *pd; 713 struct sii_raid_conf *meta; 714 struct g_raid_volume *vol; 715 struct g_raid_subdisk *sd; 716 struct g_raid_disk *disk, *best; 717 off_t size; 718 int j, disk_pos; 719 uint32_t gendiff, bestgendiff; 720 char buf[17]; 721 722 md = sc->sc_md; 723 mdi = (struct g_raid_md_sii_object *)md; 724 meta = mdi->mdio_meta; 725 726 /* Create volumes and subdisks. */ 727 sii_meta_get_name(meta, buf); 728 vol = g_raid_create_volume(sc, buf, -1); 729 vol->v_mediasize = (off_t)meta->total_sectors * 512; 730 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE; 731 if (meta->type == SII_T_RAID0) { 732 vol->v_raid_level = G_RAID_VOLUME_RL_RAID0; 733 size = vol->v_mediasize / mdi->mdio_total_disks; 734 } else if (meta->type == SII_T_RAID1) { 735 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1; 736 size = vol->v_mediasize; 737 } else if (meta->type == SII_T_RAID01) { 738 vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E; 739 size = vol->v_mediasize / (mdi->mdio_total_disks / 2); 740 } else if (meta->type == SII_T_CONCAT) { 741 if (mdi->mdio_total_disks == 1) 742 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 743 else 744 vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT; 745 size = 0; 746 } else if (meta->type == SII_T_RAID5) { 747 vol->v_raid_level = G_RAID_VOLUME_RL_RAID5; 748 vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LS; 749 size = vol->v_mediasize / (mdi->mdio_total_disks - 1); 750 } else if (meta->type == SII_T_JBOD) { 751 vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE; 752 size = 0; 753 } else { 754 vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN; 755 size = 0; 756 } 757 vol->v_strip_size = meta->strip_sectors * 512; //ZZZ 758 vol->v_disks_count = mdi->mdio_total_disks; 759 vol->v_sectorsize = 512; //ZZZ 760 for (j = 0; j < vol->v_disks_count; j++) { 761 sd = &vol->v_subdisks[j]; 762 sd->sd_offset = 0; 763 sd->sd_size = size; 764 } 765 g_raid_start_volume(vol); 766 767 /* Create disk placeholders to store data for later writing. */ 768 for (disk_pos = 0; disk_pos < mdi->mdio_total_disks; disk_pos++) { 769 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 770 pd->pd_disk_pos = disk_pos; 771 disk = g_raid_create_disk(sc); 772 disk->d_md_data = (void *)pd; 773 disk->d_state = G_RAID_DISK_S_OFFLINE; 774 sd = &vol->v_subdisks[disk_pos]; 775 sd->sd_disk = disk; 776 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 777 } 778 779 /* 780 * Make all disks found till the moment take their places 781 * in order of their generation numbers. 782 */ 783 do { 784 best = NULL; 785 bestgendiff = 0xffffffff; 786 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 787 if (disk->d_state != G_RAID_DISK_S_NONE) 788 continue; 789 pd = disk->d_md_data; 790 if (pd->pd_meta == NULL) 791 gendiff = 0xfffffffe; 792 else 793 gendiff = meta->generation - 794 pd->pd_meta->generation; 795 if (gendiff < bestgendiff) { 796 best = disk; 797 bestgendiff = gendiff; 798 } 799 } 800 if (best != NULL) 801 g_raid_md_sii_start_disk(best); 802 } while (best != NULL); 803 804 mdi->mdio_started = 1; 805 G_RAID_DEBUG1(0, sc, "Array started."); 806 g_raid_md_write_sii(md, NULL, NULL, NULL); 807 808 /* Pickup any STALE/SPARE disks to refill array if needed. */ 809 g_raid_md_sii_refill(sc); 810 811 g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME); 812 813 callout_stop(&mdi->mdio_start_co); 814 G_RAID_DEBUG1(1, sc, "root_mount_rel %p", mdi->mdio_rootmount); 815 root_mount_rel(mdi->mdio_rootmount); 816 mdi->mdio_rootmount = NULL; 817 } 818 819 static void 820 g_raid_md_sii_new_disk(struct g_raid_disk *disk) 821 { 822 struct g_raid_softc *sc; 823 struct g_raid_md_object *md; 824 struct g_raid_md_sii_object *mdi; 825 struct sii_raid_conf *pdmeta; 826 struct g_raid_md_sii_perdisk *pd; 827 828 sc = disk->d_softc; 829 md = sc->sc_md; 830 mdi = (struct g_raid_md_sii_object *)md; 831 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 832 pdmeta = pd->pd_meta; 833 834 if (mdi->mdio_started) { 835 if (g_raid_md_sii_start_disk(disk)) 836 g_raid_md_write_sii(md, NULL, NULL, NULL); 837 } else { 838 if (mdi->mdio_meta == NULL || 839 ((int32_t)(pdmeta->generation - mdi->mdio_generation)) > 0) { 840 G_RAID_DEBUG1(1, sc, "Newer disk"); 841 if (mdi->mdio_meta != NULL) 842 free(mdi->mdio_meta, M_MD_SII); 843 mdi->mdio_meta = sii_meta_copy(pdmeta); 844 mdi->mdio_generation = mdi->mdio_meta->generation; 845 mdi->mdio_total_disks = sii_meta_total_disks(pdmeta); 846 mdi->mdio_disks_present = 1; 847 } else if (pdmeta->generation == mdi->mdio_generation) { 848 mdi->mdio_disks_present++; 849 G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)", 850 mdi->mdio_disks_present, 851 mdi->mdio_total_disks); 852 } else { 853 G_RAID_DEBUG1(1, sc, "Older disk"); 854 } 855 856 /* If we collected all needed disks - start array. */ 857 if (mdi->mdio_disks_present == mdi->mdio_total_disks) 858 g_raid_md_sii_start(sc); 859 } 860 } 861 862 static void 863 g_raid_sii_go(void *arg) 864 { 865 struct g_raid_softc *sc; 866 struct g_raid_md_object *md; 867 struct g_raid_md_sii_object *mdi; 868 869 sc = arg; 870 md = sc->sc_md; 871 mdi = (struct g_raid_md_sii_object *)md; 872 if (!mdi->mdio_started) { 873 G_RAID_DEBUG1(0, sc, "Force array start due to timeout."); 874 g_raid_event_send(sc, G_RAID_NODE_E_START, 0); 875 } 876 } 877 878 static int 879 g_raid_md_create_sii(struct g_raid_md_object *md, struct g_class *mp, 880 struct g_geom **gp) 881 { 882 struct g_raid_softc *sc; 883 struct g_raid_md_sii_object *mdi; 884 char name[32]; 885 886 mdi = (struct g_raid_md_sii_object *)md; 887 mdi->mdio_timestamp[5] = arc4random(); 888 mdi->mdio_timestamp[4] = arc4random(); 889 mdi->mdio_timestamp[3] = arc4random(); 890 mdi->mdio_timestamp[2] = arc4random(); 891 mdi->mdio_timestamp[1] = arc4random(); 892 mdi->mdio_timestamp[0] = arc4random(); 893 mdi->mdio_location = arc4random(); 894 mdi->mdio_generation = 0; 895 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x", 896 mdi->mdio_timestamp[5], mdi->mdio_timestamp[4], 897 mdi->mdio_timestamp[3], mdi->mdio_timestamp[2], 898 mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]); 899 sc = g_raid_create_node(mp, name, md); 900 if (sc == NULL) 901 return (G_RAID_MD_TASTE_FAIL); 902 md->mdo_softc = sc; 903 *gp = sc->sc_geom; 904 return (G_RAID_MD_TASTE_NEW); 905 } 906 907 static int 908 g_raid_md_taste_sii(struct g_raid_md_object *md, struct g_class *mp, 909 struct g_consumer *cp, struct g_geom **gp) 910 { 911 struct g_consumer *rcp; 912 struct g_provider *pp; 913 struct g_raid_md_sii_object *mdi, *mdi1; 914 struct g_raid_softc *sc; 915 struct g_raid_disk *disk; 916 struct sii_raid_conf *meta; 917 struct g_raid_md_sii_perdisk *pd; 918 struct g_geom *geom; 919 int disk_pos, result, spare, len; 920 char name[32]; 921 uint16_t vendor; 922 923 G_RAID_DEBUG(1, "Tasting SiI on %s", cp->provider->name); 924 mdi = (struct g_raid_md_sii_object *)md; 925 pp = cp->provider; 926 927 /* Read metadata from device. */ 928 meta = NULL; 929 g_topology_unlock(); 930 vendor = 0xffff; 931 len = sizeof(vendor); 932 if (pp->geom->rank == 1) 933 g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor); 934 meta = sii_meta_read(cp); 935 g_topology_lock(); 936 if (meta == NULL) { 937 if (g_raid_aggressive_spare) { 938 if (vendor == 0x1095) { 939 G_RAID_DEBUG(1, 940 "No SiI metadata, forcing spare."); 941 spare = 2; 942 goto search; 943 } else { 944 G_RAID_DEBUG(1, 945 "SiI vendor mismatch 0x%04x != 0x1095", 946 vendor); 947 } 948 } 949 return (G_RAID_MD_TASTE_FAIL); 950 } 951 952 /* Check this disk position in obtained metadata. */ 953 disk_pos = sii_meta_disk_pos(meta, meta); 954 if (disk_pos == -1) { 955 G_RAID_DEBUG(1, "SiI disk position not found"); 956 goto fail1; 957 } 958 959 /* Metadata valid. Print it. */ 960 g_raid_md_sii_print(meta); 961 G_RAID_DEBUG(1, "SiI disk position %d", disk_pos); 962 spare = (meta->type == SII_T_SPARE) ? 1 : 0; 963 964 search: 965 /* Search for matching node. */ 966 sc = NULL; 967 mdi1 = NULL; 968 LIST_FOREACH(geom, &mp->geom, geom) { 969 sc = geom->softc; 970 if (sc == NULL) 971 continue; 972 if (sc->sc_stopping != 0) 973 continue; 974 if (sc->sc_md->mdo_class != md->mdo_class) 975 continue; 976 mdi1 = (struct g_raid_md_sii_object *)sc->sc_md; 977 if (spare) { 978 if (mdi1->mdio_incomplete) 979 break; 980 } else { 981 if (mdi1->mdio_location == meta->raid_location && 982 memcmp(&mdi1->mdio_timestamp, 983 &meta->timestamp, 6) == 0) 984 break; 985 } 986 } 987 988 /* Found matching node. */ 989 if (geom != NULL) { 990 G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name); 991 result = G_RAID_MD_TASTE_EXISTING; 992 993 } else if (spare) { /* Not found needy node -- left for later. */ 994 G_RAID_DEBUG(1, "Spare is not needed at this time"); 995 goto fail1; 996 997 } else { /* Not found matching node -- create one. */ 998 result = G_RAID_MD_TASTE_NEW; 999 memcpy(&mdi->mdio_timestamp, &meta->timestamp, 6); 1000 mdi->mdio_location = meta->raid_location; 1001 snprintf(name, sizeof(name), "SiI-%02x%02x%02x%02x%02x%02x", 1002 mdi->mdio_timestamp[5], mdi->mdio_timestamp[4], 1003 mdi->mdio_timestamp[3], mdi->mdio_timestamp[2], 1004 mdi->mdio_timestamp[1], mdi->mdio_timestamp[0]); 1005 sc = g_raid_create_node(mp, name, md); 1006 md->mdo_softc = sc; 1007 geom = sc->sc_geom; 1008 callout_init(&mdi->mdio_start_co, 1); 1009 callout_reset(&mdi->mdio_start_co, g_raid_start_timeout * hz, 1010 g_raid_sii_go, sc); 1011 mdi->mdio_rootmount = root_mount_hold("GRAID-SiI"); 1012 G_RAID_DEBUG1(1, sc, "root_mount_hold %p", mdi->mdio_rootmount); 1013 } 1014 1015 /* There is no return after this point, so we close passed consumer. */ 1016 g_access(cp, -1, 0, 0); 1017 1018 rcp = g_new_consumer(geom); 1019 rcp->flags |= G_CF_DIRECT_RECEIVE; 1020 g_attach(rcp, pp); 1021 if (g_access(rcp, 1, 1, 1) != 0) 1022 ; //goto fail1; 1023 1024 g_topology_unlock(); 1025 sx_xlock(&sc->sc_lock); 1026 1027 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1028 pd->pd_meta = meta; 1029 if (spare == 2) { 1030 pd->pd_disk_pos = -3; 1031 } else { 1032 pd->pd_disk_pos = -1; 1033 } 1034 pd->pd_disk_size = pp->mediasize; 1035 disk = g_raid_create_disk(sc); 1036 disk->d_md_data = (void *)pd; 1037 disk->d_consumer = rcp; 1038 rcp->private = disk; 1039 1040 g_raid_get_disk_info(disk); 1041 1042 g_raid_md_sii_new_disk(disk); 1043 1044 sx_xunlock(&sc->sc_lock); 1045 g_topology_lock(); 1046 *gp = geom; 1047 return (result); 1048 fail1: 1049 free(meta, M_MD_SII); 1050 return (G_RAID_MD_TASTE_FAIL); 1051 } 1052 1053 static int 1054 g_raid_md_event_sii(struct g_raid_md_object *md, 1055 struct g_raid_disk *disk, u_int event) 1056 { 1057 struct g_raid_softc *sc; 1058 struct g_raid_subdisk *sd; 1059 struct g_raid_md_sii_object *mdi; 1060 struct g_raid_md_sii_perdisk *pd; 1061 1062 sc = md->mdo_softc; 1063 mdi = (struct g_raid_md_sii_object *)md; 1064 if (disk == NULL) { 1065 switch (event) { 1066 case G_RAID_NODE_E_START: 1067 if (!mdi->mdio_started) 1068 g_raid_md_sii_start(sc); 1069 return (0); 1070 } 1071 return (-1); 1072 } 1073 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1074 switch (event) { 1075 case G_RAID_DISK_E_DISCONNECTED: 1076 /* If disk was assigned, just update statuses. */ 1077 if (pd->pd_disk_pos >= 0) { 1078 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1079 if (disk->d_consumer) { 1080 g_raid_kill_consumer(sc, disk->d_consumer); 1081 disk->d_consumer = NULL; 1082 } 1083 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 1084 g_raid_change_subdisk_state(sd, 1085 G_RAID_SUBDISK_S_NONE); 1086 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED, 1087 G_RAID_EVENT_SUBDISK); 1088 } 1089 } else { 1090 /* Otherwise -- delete. */ 1091 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1092 g_raid_destroy_disk(disk); 1093 } 1094 1095 /* Write updated metadata to all disks. */ 1096 g_raid_md_write_sii(md, NULL, NULL, NULL); 1097 1098 /* Check if anything left except placeholders. */ 1099 if (g_raid_ndisks(sc, -1) == 1100 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1101 g_raid_destroy_node(sc, 0); 1102 else 1103 g_raid_md_sii_refill(sc); 1104 return (0); 1105 } 1106 return (-2); 1107 } 1108 1109 static int 1110 g_raid_md_ctl_sii(struct g_raid_md_object *md, 1111 struct gctl_req *req) 1112 { 1113 struct g_raid_softc *sc; 1114 struct g_raid_volume *vol; 1115 struct g_raid_subdisk *sd; 1116 struct g_raid_disk *disk; 1117 struct g_raid_md_sii_object *mdi; 1118 struct g_raid_md_sii_perdisk *pd; 1119 struct g_consumer *cp; 1120 struct g_provider *pp; 1121 char arg[16]; 1122 const char *verb, *volname, *levelname, *diskname; 1123 int *nargs, *force; 1124 off_t size, sectorsize, strip; 1125 intmax_t *sizearg, *striparg; 1126 int numdisks, i, len, level, qual, update; 1127 int error; 1128 1129 sc = md->mdo_softc; 1130 mdi = (struct g_raid_md_sii_object *)md; 1131 verb = gctl_get_param(req, "verb", NULL); 1132 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 1133 error = 0; 1134 if (strcmp(verb, "label") == 0) { 1135 if (*nargs < 4) { 1136 gctl_error(req, "Invalid number of arguments."); 1137 return (-1); 1138 } 1139 volname = gctl_get_asciiparam(req, "arg1"); 1140 if (volname == NULL) { 1141 gctl_error(req, "No volume name."); 1142 return (-2); 1143 } 1144 levelname = gctl_get_asciiparam(req, "arg2"); 1145 if (levelname == NULL) { 1146 gctl_error(req, "No RAID level."); 1147 return (-3); 1148 } 1149 if (strcasecmp(levelname, "RAID5") == 0) 1150 levelname = "RAID5-LS"; 1151 if (g_raid_volume_str2level(levelname, &level, &qual)) { 1152 gctl_error(req, "Unknown RAID level '%s'.", levelname); 1153 return (-4); 1154 } 1155 numdisks = *nargs - 3; 1156 force = gctl_get_paraml(req, "force", sizeof(*force)); 1157 if (!g_raid_md_sii_supported(level, qual, numdisks, 1158 force ? *force : 0)) { 1159 gctl_error(req, "Unsupported RAID level " 1160 "(0x%02x/0x%02x), or number of disks (%d).", 1161 level, qual, numdisks); 1162 return (-5); 1163 } 1164 1165 /* Search for disks, connect them and probe. */ 1166 size = 0x7fffffffffffffffllu; 1167 sectorsize = 0; 1168 for (i = 0; i < numdisks; i++) { 1169 snprintf(arg, sizeof(arg), "arg%d", i + 3); 1170 diskname = gctl_get_asciiparam(req, arg); 1171 if (diskname == NULL) { 1172 gctl_error(req, "No disk name (%s).", arg); 1173 error = -6; 1174 break; 1175 } 1176 if (strcmp(diskname, "NONE") == 0) { 1177 cp = NULL; 1178 pp = NULL; 1179 } else { 1180 g_topology_lock(); 1181 cp = g_raid_open_consumer(sc, diskname); 1182 if (cp == NULL) { 1183 gctl_error(req, "Can't open '%s'.", 1184 diskname); 1185 g_topology_unlock(); 1186 error = -7; 1187 break; 1188 } 1189 pp = cp->provider; 1190 } 1191 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1192 pd->pd_disk_pos = i; 1193 disk = g_raid_create_disk(sc); 1194 disk->d_md_data = (void *)pd; 1195 disk->d_consumer = cp; 1196 if (cp == NULL) 1197 continue; 1198 cp->private = disk; 1199 g_topology_unlock(); 1200 1201 g_raid_get_disk_info(disk); 1202 1203 pd->pd_disk_size = pp->mediasize; 1204 if (size > pp->mediasize) 1205 size = pp->mediasize; 1206 if (sectorsize < pp->sectorsize) 1207 sectorsize = pp->sectorsize; 1208 } 1209 if (error != 0) 1210 return (error); 1211 1212 if (sectorsize <= 0) { 1213 gctl_error(req, "Can't get sector size."); 1214 return (-8); 1215 } 1216 1217 /* Reserve space for metadata. */ 1218 size -= 0x800 * sectorsize; 1219 1220 /* Handle size argument. */ 1221 len = sizeof(*sizearg); 1222 sizearg = gctl_get_param(req, "size", &len); 1223 if (sizearg != NULL && len == sizeof(*sizearg) && 1224 *sizearg > 0) { 1225 if (*sizearg > size) { 1226 gctl_error(req, "Size too big %lld > %lld.", 1227 (long long)*sizearg, (long long)size); 1228 return (-9); 1229 } 1230 size = *sizearg; 1231 } 1232 1233 /* Handle strip argument. */ 1234 strip = 131072; 1235 len = sizeof(*striparg); 1236 striparg = gctl_get_param(req, "strip", &len); 1237 if (striparg != NULL && len == sizeof(*striparg) && 1238 *striparg > 0) { 1239 if (*striparg < sectorsize) { 1240 gctl_error(req, "Strip size too small."); 1241 return (-10); 1242 } 1243 if (*striparg % sectorsize != 0) { 1244 gctl_error(req, "Incorrect strip size."); 1245 return (-11); 1246 } 1247 if (strip > 65535 * sectorsize) { 1248 gctl_error(req, "Strip size too big."); 1249 return (-12); 1250 } 1251 strip = *striparg; 1252 } 1253 1254 /* Round size down to strip or sector. */ 1255 if (level == G_RAID_VOLUME_RL_RAID1) 1256 size -= (size % sectorsize); 1257 else if (level == G_RAID_VOLUME_RL_RAID1E && 1258 (numdisks & 1) != 0) 1259 size -= (size % (2 * strip)); 1260 else 1261 size -= (size % strip); 1262 if (size <= 0) { 1263 gctl_error(req, "Size too small."); 1264 return (-13); 1265 } 1266 if (size > 0xffffffffffffllu * sectorsize) { 1267 gctl_error(req, "Size too big."); 1268 return (-14); 1269 } 1270 1271 /* We have all we need, create things: volume, ... */ 1272 mdi->mdio_total_disks = numdisks; 1273 mdi->mdio_started = 1; 1274 vol = g_raid_create_volume(sc, volname, -1); 1275 vol->v_md_data = (void *)(intptr_t)0; 1276 vol->v_raid_level = level; 1277 vol->v_raid_level_qualifier = qual; 1278 vol->v_strip_size = strip; 1279 vol->v_disks_count = numdisks; 1280 if (level == G_RAID_VOLUME_RL_RAID0 || 1281 level == G_RAID_VOLUME_RL_CONCAT || 1282 level == G_RAID_VOLUME_RL_SINGLE) 1283 vol->v_mediasize = size * numdisks; 1284 else if (level == G_RAID_VOLUME_RL_RAID1) 1285 vol->v_mediasize = size; 1286 else if (level == G_RAID_VOLUME_RL_RAID5) 1287 vol->v_mediasize = size * (numdisks - 1); 1288 else { /* RAID1E */ 1289 vol->v_mediasize = ((size * numdisks) / strip / 2) * 1290 strip; 1291 } 1292 vol->v_sectorsize = sectorsize; 1293 g_raid_start_volume(vol); 1294 1295 /* , and subdisks. */ 1296 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1297 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1298 sd = &vol->v_subdisks[pd->pd_disk_pos]; 1299 sd->sd_disk = disk; 1300 sd->sd_offset = 0; 1301 sd->sd_size = size; 1302 TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next); 1303 if (sd->sd_disk->d_consumer != NULL) { 1304 g_raid_change_disk_state(disk, 1305 G_RAID_DISK_S_ACTIVE); 1306 g_raid_change_subdisk_state(sd, 1307 G_RAID_SUBDISK_S_ACTIVE); 1308 g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW, 1309 G_RAID_EVENT_SUBDISK); 1310 } else { 1311 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1312 } 1313 } 1314 1315 /* Write metadata based on created entities. */ 1316 G_RAID_DEBUG1(0, sc, "Array started."); 1317 g_raid_md_write_sii(md, NULL, NULL, NULL); 1318 1319 /* Pickup any STALE/SPARE disks to refill array if needed. */ 1320 g_raid_md_sii_refill(sc); 1321 1322 g_raid_event_send(vol, G_RAID_VOLUME_E_START, 1323 G_RAID_EVENT_VOLUME); 1324 return (0); 1325 } 1326 if (strcmp(verb, "delete") == 0) { 1327 /* Check if some volume is still open. */ 1328 force = gctl_get_paraml(req, "force", sizeof(*force)); 1329 if (force != NULL && *force == 0 && 1330 g_raid_nopens(sc) != 0) { 1331 gctl_error(req, "Some volume is still open."); 1332 return (-4); 1333 } 1334 1335 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1336 if (disk->d_consumer) 1337 sii_meta_erase(disk->d_consumer); 1338 } 1339 g_raid_destroy_node(sc, 0); 1340 return (0); 1341 } 1342 if (strcmp(verb, "remove") == 0 || 1343 strcmp(verb, "fail") == 0) { 1344 if (*nargs < 2) { 1345 gctl_error(req, "Invalid number of arguments."); 1346 return (-1); 1347 } 1348 for (i = 1; i < *nargs; i++) { 1349 snprintf(arg, sizeof(arg), "arg%d", i); 1350 diskname = gctl_get_asciiparam(req, arg); 1351 if (diskname == NULL) { 1352 gctl_error(req, "No disk name (%s).", arg); 1353 error = -2; 1354 break; 1355 } 1356 if (strncmp(diskname, _PATH_DEV, 5) == 0) 1357 diskname += 5; 1358 1359 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1360 if (disk->d_consumer != NULL && 1361 disk->d_consumer->provider != NULL && 1362 strcmp(disk->d_consumer->provider->name, 1363 diskname) == 0) 1364 break; 1365 } 1366 if (disk == NULL) { 1367 gctl_error(req, "Disk '%s' not found.", 1368 diskname); 1369 error = -3; 1370 break; 1371 } 1372 1373 if (strcmp(verb, "fail") == 0) { 1374 g_raid_md_fail_disk_sii(md, NULL, disk); 1375 continue; 1376 } 1377 1378 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1379 1380 /* Erase metadata on deleting disk. */ 1381 sii_meta_erase(disk->d_consumer); 1382 1383 /* If disk was assigned, just update statuses. */ 1384 if (pd->pd_disk_pos >= 0) { 1385 g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE); 1386 g_raid_kill_consumer(sc, disk->d_consumer); 1387 disk->d_consumer = NULL; 1388 TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) { 1389 g_raid_change_subdisk_state(sd, 1390 G_RAID_SUBDISK_S_NONE); 1391 g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED, 1392 G_RAID_EVENT_SUBDISK); 1393 } 1394 } else { 1395 /* Otherwise -- delete. */ 1396 g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE); 1397 g_raid_destroy_disk(disk); 1398 } 1399 } 1400 1401 /* Write updated metadata to remaining disks. */ 1402 g_raid_md_write_sii(md, NULL, NULL, NULL); 1403 1404 /* Check if anything left except placeholders. */ 1405 if (g_raid_ndisks(sc, -1) == 1406 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1407 g_raid_destroy_node(sc, 0); 1408 else 1409 g_raid_md_sii_refill(sc); 1410 return (error); 1411 } 1412 if (strcmp(verb, "insert") == 0) { 1413 if (*nargs < 2) { 1414 gctl_error(req, "Invalid number of arguments."); 1415 return (-1); 1416 } 1417 update = 0; 1418 for (i = 1; i < *nargs; i++) { 1419 /* Get disk name. */ 1420 snprintf(arg, sizeof(arg), "arg%d", i); 1421 diskname = gctl_get_asciiparam(req, arg); 1422 if (diskname == NULL) { 1423 gctl_error(req, "No disk name (%s).", arg); 1424 error = -3; 1425 break; 1426 } 1427 1428 /* Try to find provider with specified name. */ 1429 g_topology_lock(); 1430 cp = g_raid_open_consumer(sc, diskname); 1431 if (cp == NULL) { 1432 gctl_error(req, "Can't open disk '%s'.", 1433 diskname); 1434 g_topology_unlock(); 1435 error = -4; 1436 break; 1437 } 1438 pp = cp->provider; 1439 1440 pd = malloc(sizeof(*pd), M_MD_SII, M_WAITOK | M_ZERO); 1441 pd->pd_disk_pos = -3; 1442 pd->pd_disk_size = pp->mediasize; 1443 1444 disk = g_raid_create_disk(sc); 1445 disk->d_consumer = cp; 1446 disk->d_md_data = (void *)pd; 1447 cp->private = disk; 1448 g_topology_unlock(); 1449 1450 g_raid_get_disk_info(disk); 1451 1452 /* Welcome the "new" disk. */ 1453 update += g_raid_md_sii_start_disk(disk); 1454 if (disk->d_state == G_RAID_DISK_S_SPARE) { 1455 sii_meta_write_spare(cp); 1456 g_raid_destroy_disk(disk); 1457 } else if (disk->d_state != G_RAID_DISK_S_ACTIVE) { 1458 gctl_error(req, "Disk '%s' doesn't fit.", 1459 diskname); 1460 g_raid_destroy_disk(disk); 1461 error = -8; 1462 break; 1463 } 1464 } 1465 1466 /* Write new metadata if we changed something. */ 1467 if (update) 1468 g_raid_md_write_sii(md, NULL, NULL, NULL); 1469 return (error); 1470 } 1471 gctl_error(req, "Command '%s' is not supported.", verb); 1472 return (-100); 1473 } 1474 1475 static int 1476 g_raid_md_write_sii(struct g_raid_md_object *md, struct g_raid_volume *tvol, 1477 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1478 { 1479 struct g_raid_softc *sc; 1480 struct g_raid_volume *vol; 1481 struct g_raid_subdisk *sd; 1482 struct g_raid_disk *disk; 1483 struct g_raid_md_sii_object *mdi; 1484 struct g_raid_md_sii_perdisk *pd; 1485 struct sii_raid_conf *meta; 1486 u_int i; 1487 1488 sc = md->mdo_softc; 1489 mdi = (struct g_raid_md_sii_object *)md; 1490 1491 if (sc->sc_stopping == G_RAID_DESTROY_HARD) 1492 return (0); 1493 1494 /* Bump generation. Newly written metadata may differ from previous. */ 1495 mdi->mdio_generation++; 1496 1497 /* There is only one volume. */ 1498 vol = TAILQ_FIRST(&sc->sc_volumes); 1499 1500 /* Fill global fields. */ 1501 meta = malloc(sizeof(*meta), M_MD_SII, M_WAITOK | M_ZERO); 1502 if (mdi->mdio_meta) 1503 memcpy(meta, mdi->mdio_meta, sizeof(*meta)); 1504 meta->total_sectors = vol->v_mediasize / vol->v_sectorsize; 1505 meta->vendor_id = 0x1095; 1506 meta->version_minor = 0; 1507 meta->version_major = 2; 1508 memcpy(&meta->timestamp, &mdi->mdio_timestamp, 6); 1509 meta->strip_sectors = vol->v_strip_size / vol->v_sectorsize; 1510 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0) { 1511 meta->type = SII_T_RAID0; 1512 meta->raid0_disks = vol->v_disks_count; 1513 meta->raid1_disks = 0xff; 1514 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) { 1515 meta->type = SII_T_RAID1; 1516 meta->raid0_disks = 0xff; 1517 meta->raid1_disks = vol->v_disks_count; 1518 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1519 meta->type = SII_T_RAID01; 1520 meta->raid0_disks = vol->v_disks_count / 2; 1521 meta->raid1_disks = 2; 1522 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT || 1523 vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE) { 1524 meta->type = SII_T_JBOD; 1525 meta->raid0_disks = vol->v_disks_count; 1526 meta->raid1_disks = 0xff; 1527 } else { 1528 meta->type = SII_T_RAID5; 1529 meta->raid0_disks = vol->v_disks_count; 1530 meta->raid1_disks = 0xff; 1531 } 1532 meta->generation = mdi->mdio_generation; 1533 meta->raid_status = vol->v_dirty ? SII_S_ONLINE : SII_S_AVAILABLE; 1534 for (i = 0; i < vol->v_disks_count; i++) { 1535 sd = &vol->v_subdisks[i]; 1536 if (sd->sd_state == G_RAID_SUBDISK_S_STALE || 1537 sd->sd_state == G_RAID_SUBDISK_S_RESYNC) 1538 meta->raid_status = SII_S_ONLINE; 1539 } 1540 meta->raid_location = mdi->mdio_location; 1541 sii_meta_put_name(meta, vol->v_name); 1542 1543 /* We are done. Print meta data and store them to disks. */ 1544 if (mdi->mdio_meta != NULL) 1545 free(mdi->mdio_meta, M_MD_SII); 1546 mdi->mdio_meta = meta; 1547 TAILQ_FOREACH(disk, &sc->sc_disks, d_next) { 1548 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1549 if (disk->d_state != G_RAID_DISK_S_ACTIVE) 1550 continue; 1551 if (pd->pd_meta != NULL) { 1552 free(pd->pd_meta, M_MD_SII); 1553 pd->pd_meta = NULL; 1554 } 1555 pd->pd_meta = sii_meta_copy(meta); 1556 if ((sd = TAILQ_FIRST(&disk->d_subdisks)) != NULL) { 1557 if (sd->sd_state < G_RAID_SUBDISK_S_NEW) 1558 pd->pd_meta->disk_status = SII_S_DROPPED; 1559 else if (sd->sd_state < G_RAID_SUBDISK_S_STALE) { 1560 pd->pd_meta->disk_status = SII_S_REBUILD; 1561 pd->pd_meta->rebuild_lba = 1562 sd->sd_rebuild_pos / vol->v_sectorsize; 1563 } else 1564 pd->pd_meta->disk_status = SII_S_CURRENT; 1565 if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1) { 1566 pd->pd_meta->disk_number = sd->sd_pos; 1567 pd->pd_meta->raid0_ident = 0xff; 1568 pd->pd_meta->raid1_ident = 0; 1569 } else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E) { 1570 pd->pd_meta->disk_number = sd->sd_pos / meta->raid1_disks; 1571 pd->pd_meta->raid0_ident = sd->sd_pos % meta->raid1_disks; 1572 pd->pd_meta->raid1_ident = sd->sd_pos / meta->raid1_disks; 1573 } else { 1574 pd->pd_meta->disk_number = sd->sd_pos; 1575 pd->pd_meta->raid0_ident = 0; 1576 pd->pd_meta->raid1_ident = 0xff; 1577 } 1578 } 1579 G_RAID_DEBUG(1, "Writing SiI metadata to %s", 1580 g_raid_get_diskname(disk)); 1581 g_raid_md_sii_print(pd->pd_meta); 1582 sii_meta_write(disk->d_consumer, pd->pd_meta); 1583 } 1584 return (0); 1585 } 1586 1587 static int 1588 g_raid_md_fail_disk_sii(struct g_raid_md_object *md, 1589 struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk) 1590 { 1591 struct g_raid_softc *sc; 1592 struct g_raid_md_sii_perdisk *pd; 1593 struct g_raid_subdisk *sd; 1594 1595 sc = md->mdo_softc; 1596 pd = (struct g_raid_md_sii_perdisk *)tdisk->d_md_data; 1597 1598 /* We can't fail disk that is not a part of array now. */ 1599 if (pd->pd_disk_pos < 0) 1600 return (-1); 1601 1602 /* 1603 * Mark disk as failed in metadata and try to write that metadata 1604 * to the disk itself to prevent it's later resurrection as STALE. 1605 */ 1606 if (tdisk->d_consumer) { 1607 if (pd->pd_meta) { 1608 pd->pd_meta->disk_status = SII_S_REMOVED; 1609 sii_meta_write(tdisk->d_consumer, pd->pd_meta); 1610 } else 1611 sii_meta_erase(tdisk->d_consumer); 1612 } 1613 1614 /* Change states. */ 1615 g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED); 1616 TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) { 1617 g_raid_change_subdisk_state(sd, 1618 G_RAID_SUBDISK_S_FAILED); 1619 g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED, 1620 G_RAID_EVENT_SUBDISK); 1621 } 1622 1623 /* Write updated metadata to remaining disks. */ 1624 g_raid_md_write_sii(md, NULL, NULL, tdisk); 1625 1626 /* Check if anything left except placeholders. */ 1627 if (g_raid_ndisks(sc, -1) == 1628 g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE)) 1629 g_raid_destroy_node(sc, 0); 1630 else 1631 g_raid_md_sii_refill(sc); 1632 return (0); 1633 } 1634 1635 static int 1636 g_raid_md_free_disk_sii(struct g_raid_md_object *md, 1637 struct g_raid_disk *disk) 1638 { 1639 struct g_raid_md_sii_perdisk *pd; 1640 1641 pd = (struct g_raid_md_sii_perdisk *)disk->d_md_data; 1642 if (pd->pd_meta != NULL) { 1643 free(pd->pd_meta, M_MD_SII); 1644 pd->pd_meta = NULL; 1645 } 1646 free(pd, M_MD_SII); 1647 disk->d_md_data = NULL; 1648 return (0); 1649 } 1650 1651 static int 1652 g_raid_md_free_sii(struct g_raid_md_object *md) 1653 { 1654 struct g_raid_md_sii_object *mdi; 1655 1656 mdi = (struct g_raid_md_sii_object *)md; 1657 if (!mdi->mdio_started) { 1658 mdi->mdio_started = 0; 1659 callout_stop(&mdi->mdio_start_co); 1660 G_RAID_DEBUG1(1, md->mdo_softc, 1661 "root_mount_rel %p", mdi->mdio_rootmount); 1662 root_mount_rel(mdi->mdio_rootmount); 1663 mdi->mdio_rootmount = NULL; 1664 } 1665 if (mdi->mdio_meta != NULL) { 1666 free(mdi->mdio_meta, M_MD_SII); 1667 mdi->mdio_meta = NULL; 1668 } 1669 return (0); 1670 } 1671 1672 G_RAID_MD_DECLARE(sii, "SiI"); 1673