1/* $OpenBSD: softraid.c,v 1.430 2024/02/03 18:51:58 beck Exp $ */ 2/* 3 * Copyright (c) 2007, 2008, 2009 Marco Peereboom <marco@peereboom.us> 4 * Copyright (c) 2008 Chris Kuethe <ckuethe@openbsd.org> 5 * Copyright (c) 2009 Joel Sing <jsing@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20#include "bio.h" 21 22#include <sys/param.h> 23#include <sys/systm.h> 24#include <sys/buf.h> 25#include <sys/device.h> 26#include <sys/ioctl.h> 27#include <sys/malloc.h> 28#include <sys/pool.h> 29#include <sys/kernel.h> 30#include <sys/disk.h> 31#include <sys/rwlock.h> 32#include <sys/queue.h> 33#include <sys/fcntl.h> 34#include <sys/disklabel.h> 35#include <sys/vnode.h> 36#include <sys/lock.h> 37#include <sys/mount.h> 38#include <sys/sensors.h> 39#include <sys/stat.h> 40#include <sys/conf.h> 41#include <sys/uio.h> 42#include <sys/task.h> 43#include <sys/kthread.h> 44#include <sys/dkio.h> 45#include <sys/stdint.h> 46 47#include <scsi/scsi_all.h> 48#include <scsi/scsiconf.h> 49#include <scsi/scsi_disk.h> 50 51#include <dev/softraidvar.h> 52 53#ifdef HIBERNATE 54#include <lib/libsa/aes_xts.h> 55#include <sys/hibernate.h> 56#include <scsi/sdvar.h> 57#endif /* HIBERNATE */ 58 59/* #define SR_FANCY_STATS */ 60 61#ifdef SR_DEBUG 62#define SR_FANCY_STATS 63uint32_t sr_debug = 0 64 /* | SR_D_CMD */ 65 /* | SR_D_MISC */ 66 /* | SR_D_INTR */ 67 /* | SR_D_IOCTL */ 68 /* | SR_D_CCB */ 69 /* | SR_D_WU */ 70 /* | SR_D_META */ 71 /* | SR_D_DIS */ 72 /* | SR_D_STATE */ 73 /* | SR_D_REBUILD */ 74 ; 75#endif 76 77struct sr_softc *softraid0; 78struct sr_uuid sr_bootuuid; 79u_int8_t sr_bootkey[SR_CRYPTO_MAXKEYBYTES]; 80 81int sr_match(struct device *, void *, void *); 82void sr_attach(struct device *, struct device *, void *); 83int sr_detach(struct device *, int); 84void sr_map_root(void); 85 86const struct cfattach softraid_ca = { 87 sizeof(struct sr_softc), sr_match, sr_attach, sr_detach, 88}; 89 90struct cfdriver softraid_cd = { 91 NULL, "softraid", DV_DULL 92}; 93 94/* scsi & discipline */ 95void sr_scsi_cmd(struct scsi_xfer *); 96int sr_scsi_probe(struct scsi_link *); 97int sr_scsi_ioctl(struct scsi_link *, u_long, 98 caddr_t, int); 99int sr_bio_ioctl(struct device *, u_long, caddr_t); 100int sr_bio_handler(struct sr_softc *, 101 struct sr_discipline *, u_long, struct bio *); 102int sr_ioctl_inq(struct sr_softc *, struct bioc_inq *); 103int sr_ioctl_vol(struct sr_softc *, struct bioc_vol *); 104int sr_ioctl_disk(struct sr_softc *, struct bioc_disk *); 105int sr_ioctl_setstate(struct sr_softc *, 106 struct bioc_setstate *); 107int sr_ioctl_createraid(struct sr_softc *, 108 struct bioc_createraid *, int, void *); 109int sr_ioctl_deleteraid(struct sr_softc *, 110 struct sr_discipline *, struct bioc_deleteraid *); 111int sr_ioctl_discipline(struct sr_softc *, 112 struct sr_discipline *, struct bioc_discipline *); 113int sr_ioctl_installboot(struct sr_softc *, 114 struct sr_discipline *, struct bioc_installboot *); 115void sr_chunks_unwind(struct sr_softc *, 116 struct sr_chunk_head *); 117void sr_discipline_free(struct sr_discipline *); 118void sr_discipline_shutdown(struct sr_discipline *, int, int); 119int sr_discipline_init(struct sr_discipline *, int); 120int sr_alloc_resources(struct sr_discipline *); 121void sr_free_resources(struct sr_discipline *); 122void sr_set_chunk_state(struct sr_discipline *, int, int); 123void sr_set_vol_state(struct sr_discipline *); 124 125/* utility functions */ 126void sr_shutdown(int); 127void sr_uuid_generate(struct sr_uuid *); 128char *sr_uuid_format(struct sr_uuid *); 129void sr_uuid_print(struct sr_uuid *, int); 130void sr_checksum_print(u_int8_t *); 131int sr_boot_assembly(struct sr_softc *); 132int sr_already_assembled(struct sr_discipline *); 133int sr_hotspare(struct sr_softc *, dev_t); 134void sr_hotspare_rebuild(struct sr_discipline *); 135int sr_rebuild_init(struct sr_discipline *, dev_t, int); 136void sr_rebuild_start(void *); 137void sr_rebuild_thread(void *); 138void sr_rebuild(struct sr_discipline *); 139void sr_roam_chunks(struct sr_discipline *); 140int sr_chunk_in_use(struct sr_softc *, dev_t); 141int sr_rw(struct sr_softc *, dev_t, char *, size_t, 142 daddr_t, long); 143void sr_wu_done_callback(void *); 144struct sr_discipline *sr_find_discipline(struct sr_softc *sc, const char *); 145 146/* don't include these on RAMDISK */ 147#ifndef SMALL_KERNEL 148void sr_sensors_refresh(void *); 149int sr_sensors_create(struct sr_discipline *); 150void sr_sensors_delete(struct sr_discipline *); 151#endif 152 153/* metadata */ 154int sr_meta_probe(struct sr_discipline *, dev_t *, int); 155int sr_meta_attach(struct sr_discipline *, int, int); 156int sr_meta_rw(struct sr_discipline *, dev_t, void *, long); 157int sr_meta_clear(struct sr_discipline *); 158void sr_meta_init(struct sr_discipline *, int, int); 159void sr_meta_init_complete(struct sr_discipline *); 160void sr_meta_opt_handler(struct sr_discipline *, 161 struct sr_meta_opt_hdr *); 162 163/* hotplug magic */ 164void sr_disk_attach(struct disk *, int); 165 166struct sr_hotplug_list { 167 void (*sh_hotplug)(struct sr_discipline *, 168 struct disk *, int); 169 struct sr_discipline *sh_sd; 170 171 SLIST_ENTRY(sr_hotplug_list) shl_link; 172}; 173SLIST_HEAD(sr_hotplug_list_head, sr_hotplug_list); 174 175struct sr_hotplug_list_head sr_hotplug_callbacks; 176extern void (*softraid_disk_attach)(struct disk *, int); 177 178/* scsi glue */ 179const struct scsi_adapter sr_switch = { 180 sr_scsi_cmd, NULL, sr_scsi_probe, NULL, sr_scsi_ioctl 181}; 182 183/* native metadata format */ 184int sr_meta_native_bootprobe(struct sr_softc *, dev_t, 185 struct sr_boot_chunk_head *); 186#define SR_META_NOTCLAIMED (0) 187#define SR_META_CLAIMED (1) 188int sr_meta_native_probe(struct sr_softc *, 189 struct sr_chunk *); 190int sr_meta_native_attach(struct sr_discipline *, int); 191int sr_meta_native_write(struct sr_discipline *, dev_t, 192 struct sr_metadata *,void *); 193 194#ifdef SR_DEBUG 195void sr_meta_print(struct sr_metadata *); 196#else 197#define sr_meta_print(m) 198#endif 199 200/* the metadata driver should remain stateless */ 201struct sr_meta_driver { 202 daddr_t smd_offset; /* metadata location */ 203 u_int32_t smd_size; /* size of metadata */ 204 205 int (*smd_probe)(struct sr_softc *, 206 struct sr_chunk *); 207 int (*smd_attach)(struct sr_discipline *, int); 208 int (*smd_detach)(struct sr_discipline *); 209 int (*smd_read)(struct sr_discipline *, dev_t, 210 struct sr_metadata *, void *); 211 int (*smd_write)(struct sr_discipline *, dev_t, 212 struct sr_metadata *, void *); 213 int (*smd_validate)(struct sr_discipline *, 214 struct sr_metadata *, void *); 215} smd[] = { 216 { SR_META_OFFSET, SR_META_SIZE * DEV_BSIZE, 217 sr_meta_native_probe, sr_meta_native_attach, NULL, 218 sr_meta_native_read, sr_meta_native_write, NULL }, 219 { 0, 0, NULL, NULL, NULL, NULL } 220}; 221 222int 223sr_meta_attach(struct sr_discipline *sd, int chunk_no, int force) 224{ 225 struct sr_softc *sc = sd->sd_sc; 226 struct sr_chunk_head *cl; 227 struct sr_chunk *ch_entry, *chunk1, *chunk2; 228 int rv = 1, i = 0; 229 230 DNPRINTF(SR_D_META, "%s: sr_meta_attach(%d)\n", DEVNAME(sc), chunk_no); 231 232 /* in memory copy of metadata */ 233 sd->sd_meta = malloc(SR_META_SIZE * DEV_BSIZE, M_DEVBUF, 234 M_ZERO | M_NOWAIT); 235 if (!sd->sd_meta) { 236 sr_error(sc, "could not allocate memory for metadata"); 237 goto bad; 238 } 239 240 if (sd->sd_meta_type != SR_META_F_NATIVE) { 241 /* in memory copy of foreign metadata */ 242 sd->sd_meta_foreign = malloc(smd[sd->sd_meta_type].smd_size, 243 M_DEVBUF, M_ZERO | M_NOWAIT); 244 if (!sd->sd_meta_foreign) { 245 /* unwind frees sd_meta */ 246 sr_error(sc, "could not allocate memory for foreign " 247 "metadata"); 248 goto bad; 249 } 250 } 251 252 /* we have a valid list now create an array index */ 253 cl = &sd->sd_vol.sv_chunk_list; 254 sd->sd_vol.sv_chunks = mallocarray(chunk_no, sizeof(struct sr_chunk *), 255 M_DEVBUF, M_WAITOK | M_ZERO); 256 257 /* fill out chunk array */ 258 i = 0; 259 SLIST_FOREACH(ch_entry, cl, src_link) 260 sd->sd_vol.sv_chunks[i++] = ch_entry; 261 262 /* attach metadata */ 263 if (smd[sd->sd_meta_type].smd_attach(sd, force)) 264 goto bad; 265 266 /* Force chunks into correct order now that metadata is attached. */ 267 SLIST_INIT(cl); 268 for (i = 0; i < chunk_no; i++) { 269 ch_entry = sd->sd_vol.sv_chunks[i]; 270 chunk2 = NULL; 271 SLIST_FOREACH(chunk1, cl, src_link) { 272 if (chunk1->src_meta.scmi.scm_chunk_id > 273 ch_entry->src_meta.scmi.scm_chunk_id) 274 break; 275 chunk2 = chunk1; 276 } 277 if (chunk2 == NULL) 278 SLIST_INSERT_HEAD(cl, ch_entry, src_link); 279 else 280 SLIST_INSERT_AFTER(chunk2, ch_entry, src_link); 281 } 282 i = 0; 283 SLIST_FOREACH(ch_entry, cl, src_link) 284 sd->sd_vol.sv_chunks[i++] = ch_entry; 285 286 rv = 0; 287bad: 288 return (rv); 289} 290 291int 292sr_meta_probe(struct sr_discipline *sd, dev_t *dt, int no_chunk) 293{ 294 struct sr_softc *sc = sd->sd_sc; 295 struct vnode *vn; 296 struct sr_chunk *ch_entry, *ch_prev = NULL; 297 struct sr_chunk_head *cl; 298 char devname[32]; 299 int i, d, type, found, prevf, error; 300 dev_t dev; 301 302 DNPRINTF(SR_D_META, "%s: sr_meta_probe(%d)\n", DEVNAME(sc), no_chunk); 303 304 if (no_chunk == 0) 305 goto unwind; 306 307 cl = &sd->sd_vol.sv_chunk_list; 308 309 for (d = 0, prevf = SR_META_F_INVALID; d < no_chunk; d++) { 310 ch_entry = malloc(sizeof(struct sr_chunk), M_DEVBUF, 311 M_WAITOK | M_ZERO); 312 /* keep disks in user supplied order */ 313 if (ch_prev) 314 SLIST_INSERT_AFTER(ch_prev, ch_entry, src_link); 315 else 316 SLIST_INSERT_HEAD(cl, ch_entry, src_link); 317 ch_prev = ch_entry; 318 dev = dt[d]; 319 ch_entry->src_dev_mm = dev; 320 321 if (dev == NODEV) { 322 ch_entry->src_meta.scm_status = BIOC_SDOFFLINE; 323 continue; 324 } else { 325 sr_meta_getdevname(sc, dev, devname, sizeof(devname)); 326 if (bdevvp(dev, &vn)) { 327 sr_error(sc, "sr_meta_probe: cannot allocate " 328 "vnode"); 329 goto unwind; 330 } 331 332 /* 333 * XXX leaving dev open for now; move this to attach 334 * and figure out the open/close dance for unwind. 335 */ 336 error = VOP_OPEN(vn, FREAD | FWRITE, NOCRED, curproc); 337 if (error) { 338 DNPRINTF(SR_D_META,"%s: sr_meta_probe can't " 339 "open %s\n", DEVNAME(sc), devname); 340 vput(vn); 341 goto unwind; 342 } 343 344 strlcpy(ch_entry->src_devname, devname, 345 sizeof(ch_entry->src_devname)); 346 ch_entry->src_vn = vn; 347 } 348 349 /* determine if this is a device we understand */ 350 for (i = 0, found = SR_META_F_INVALID; smd[i].smd_probe; i++) { 351 type = smd[i].smd_probe(sc, ch_entry); 352 if (type == SR_META_F_INVALID) 353 continue; 354 else { 355 found = type; 356 break; 357 } 358 } 359 360 if (found == SR_META_F_INVALID) 361 goto unwind; 362 if (prevf == SR_META_F_INVALID) 363 prevf = found; 364 if (prevf != found) { 365 DNPRINTF(SR_D_META, "%s: prevf != found\n", 366 DEVNAME(sc)); 367 goto unwind; 368 } 369 } 370 371 return (prevf); 372unwind: 373 return (SR_META_F_INVALID); 374} 375 376void 377sr_meta_getdevname(struct sr_softc *sc, dev_t dev, char *buf, int size) 378{ 379 int maj, unit, part; 380 char *name; 381 382 DNPRINTF(SR_D_META, "%s: sr_meta_getdevname(%p, %d)\n", 383 DEVNAME(sc), buf, size); 384 385 if (!buf) 386 return; 387 388 maj = major(dev); 389 part = DISKPART(dev); 390 unit = DISKUNIT(dev); 391 392 name = findblkname(maj); 393 if (name == NULL) 394 return; 395 396 snprintf(buf, size, "%s%d%c", name, unit, part + 'a'); 397} 398 399int 400sr_rw(struct sr_softc *sc, dev_t dev, char *buf, size_t size, daddr_t blkno, 401 long flags) 402{ 403 struct vnode *vp; 404 struct buf b; 405 size_t bufsize, dma_bufsize; 406 int rv = 1; 407 char *dma_buf; 408 int s; 409 410 DNPRINTF(SR_D_MISC, "%s: sr_rw(0x%x, %p, %zu, %lld 0x%lx)\n", 411 DEVNAME(sc), dev, buf, size, (long long)blkno, flags); 412 413 dma_bufsize = (size > MAXPHYS) ? MAXPHYS : size; 414 dma_buf = dma_alloc(dma_bufsize, PR_WAITOK); 415 416 if (bdevvp(dev, &vp)) { 417 printf("%s: sr_rw: failed to allocate vnode\n", DEVNAME(sc)); 418 goto done; 419 } 420 421 while (size > 0) { 422 DNPRINTF(SR_D_MISC, "%s: dma_buf %p, size %zu, blkno %lld)\n", 423 DEVNAME(sc), dma_buf, size, (long long)blkno); 424 425 bufsize = (size > MAXPHYS) ? MAXPHYS : size; 426 if (flags == B_WRITE) 427 memcpy(dma_buf, buf, bufsize); 428 429 bzero(&b, sizeof(b)); 430 b.b_flags = flags | B_PHYS; 431 b.b_proc = curproc; 432 b.b_dev = dev; 433 b.b_iodone = NULL; 434 b.b_error = 0; 435 b.b_blkno = blkno; 436 b.b_data = dma_buf; 437 b.b_bcount = bufsize; 438 b.b_bufsize = bufsize; 439 b.b_resid = bufsize; 440 b.b_vp = vp; 441 442 if ((b.b_flags & B_READ) == 0) { 443 s = splbio(); 444 vp->v_numoutput++; 445 splx(s); 446 } 447 448 VOP_STRATEGY(vp, &b); 449 biowait(&b); 450 451 if (b.b_flags & B_ERROR) { 452 printf("%s: I/O error %d on dev 0x%x at block %llu\n", 453 DEVNAME(sc), b.b_error, dev, b.b_blkno); 454 goto done; 455 } 456 457 if (flags == B_READ) 458 memcpy(buf, dma_buf, bufsize); 459 460 size -= bufsize; 461 buf += bufsize; 462 blkno += howmany(bufsize, DEV_BSIZE); 463 } 464 465 rv = 0; 466 467done: 468 if (vp) 469 vput(vp); 470 471 dma_free(dma_buf, dma_bufsize); 472 473 return (rv); 474} 475 476int 477sr_meta_rw(struct sr_discipline *sd, dev_t dev, void *md, long flags) 478{ 479 int rv = 1; 480 481 DNPRINTF(SR_D_META, "%s: sr_meta_rw(0x%x, %p, 0x%lx)\n", 482 DEVNAME(sd->sd_sc), dev, md, flags); 483 484 if (md == NULL) { 485 printf("%s: sr_meta_rw: invalid metadata pointer\n", 486 DEVNAME(sd->sd_sc)); 487 goto done; 488 } 489 490 rv = sr_rw(sd->sd_sc, dev, md, SR_META_SIZE * DEV_BSIZE, 491 SR_META_OFFSET, flags); 492 493done: 494 return (rv); 495} 496 497int 498sr_meta_clear(struct sr_discipline *sd) 499{ 500 struct sr_softc *sc = sd->sd_sc; 501 struct sr_chunk_head *cl = &sd->sd_vol.sv_chunk_list; 502 struct sr_chunk *ch_entry; 503 void *m; 504 int rv = 1; 505 506 DNPRINTF(SR_D_META, "%s: sr_meta_clear\n", DEVNAME(sc)); 507 508 if (sd->sd_meta_type != SR_META_F_NATIVE) { 509 sr_error(sc, "cannot clear foreign metadata"); 510 goto done; 511 } 512 513 m = malloc(SR_META_SIZE * DEV_BSIZE, M_DEVBUF, M_WAITOK | M_ZERO); 514 SLIST_FOREACH(ch_entry, cl, src_link) { 515 if (sr_meta_native_write(sd, ch_entry->src_dev_mm, m, NULL)) { 516 /* XXX mark disk offline */ 517 DNPRINTF(SR_D_META, "%s: sr_meta_clear failed to " 518 "clear %s\n", DEVNAME(sc), ch_entry->src_devname); 519 rv++; 520 continue; 521 } 522 bzero(&ch_entry->src_meta, sizeof(ch_entry->src_meta)); 523 } 524 525 bzero(sd->sd_meta, SR_META_SIZE * DEV_BSIZE); 526 527 free(m, M_DEVBUF, SR_META_SIZE * DEV_BSIZE); 528 rv = 0; 529done: 530 return (rv); 531} 532 533void 534sr_meta_init(struct sr_discipline *sd, int level, int no_chunk) 535{ 536 struct sr_softc *sc = sd->sd_sc; 537 struct sr_metadata *sm = sd->sd_meta; 538 struct sr_chunk_head *cl = &sd->sd_vol.sv_chunk_list; 539 struct sr_meta_chunk *scm; 540 struct sr_chunk *chunk; 541 int cid = 0; 542 u_int64_t max_chunk_sz = 0, min_chunk_sz = 0; 543 u_int32_t secsize = DEV_BSIZE; 544 545 DNPRINTF(SR_D_META, "%s: sr_meta_init\n", DEVNAME(sc)); 546 547 if (!sm) 548 return; 549 550 /* Initialise volume metadata. */ 551 sm->ssdi.ssd_magic = SR_MAGIC; 552 sm->ssdi.ssd_version = SR_META_VERSION; 553 sm->ssdi.ssd_vol_flags = sd->sd_meta_flags; 554 sm->ssdi.ssd_volid = 0; 555 sm->ssdi.ssd_chunk_no = no_chunk; 556 sm->ssdi.ssd_level = level; 557 558 sm->ssd_data_blkno = SR_DATA_OFFSET; 559 sm->ssd_ondisk = 0; 560 561 sr_uuid_generate(&sm->ssdi.ssd_uuid); 562 563 /* Initialise chunk metadata and get min/max chunk sizes & secsize. */ 564 SLIST_FOREACH(chunk, cl, src_link) { 565 scm = &chunk->src_meta; 566 scm->scmi.scm_size = chunk->src_size; 567 scm->scmi.scm_chunk_id = cid++; 568 scm->scm_status = BIOC_SDONLINE; 569 scm->scmi.scm_volid = 0; 570 strlcpy(scm->scmi.scm_devname, chunk->src_devname, 571 sizeof(scm->scmi.scm_devname)); 572 memcpy(&scm->scmi.scm_uuid, &sm->ssdi.ssd_uuid, 573 sizeof(scm->scmi.scm_uuid)); 574 sr_checksum(sc, scm, &scm->scm_checksum, 575 sizeof(scm->scm_checksum)); 576 577 if (min_chunk_sz == 0) 578 min_chunk_sz = scm->scmi.scm_size; 579 if (chunk->src_secsize > secsize) 580 secsize = chunk->src_secsize; 581 min_chunk_sz = MIN(min_chunk_sz, scm->scmi.scm_size); 582 max_chunk_sz = MAX(max_chunk_sz, scm->scmi.scm_size); 583 } 584 585 sm->ssdi.ssd_secsize = secsize; 586 587 /* Equalize chunk sizes. */ 588 SLIST_FOREACH(chunk, cl, src_link) 589 chunk->src_meta.scmi.scm_coerced_size = min_chunk_sz; 590 591 sd->sd_vol.sv_chunk_minsz = min_chunk_sz; 592 sd->sd_vol.sv_chunk_maxsz = max_chunk_sz; 593} 594 595void 596sr_meta_init_complete(struct sr_discipline *sd) 597{ 598#ifdef SR_DEBUG 599 struct sr_softc *sc = sd->sd_sc; 600#endif 601 struct sr_metadata *sm = sd->sd_meta; 602 603 DNPRINTF(SR_D_META, "%s: sr_meta_complete\n", DEVNAME(sc)); 604 605 /* Complete initialisation of volume metadata. */ 606 strlcpy(sm->ssdi.ssd_vendor, "OPENBSD", sizeof(sm->ssdi.ssd_vendor)); 607 snprintf(sm->ssdi.ssd_product, sizeof(sm->ssdi.ssd_product), 608 "SR %s", sd->sd_name); 609 snprintf(sm->ssdi.ssd_revision, sizeof(sm->ssdi.ssd_revision), 610 "%03d", sm->ssdi.ssd_version); 611} 612 613void 614sr_meta_opt_handler(struct sr_discipline *sd, struct sr_meta_opt_hdr *om) 615{ 616 if (om->som_type != SR_OPT_BOOT) 617 panic("unknown optional metadata type"); 618} 619 620void 621sr_meta_save_callback(void *xsd) 622{ 623 struct sr_discipline *sd = xsd; 624 int s; 625 626 s = splbio(); 627 628 if (sr_meta_save(sd, SR_META_DIRTY)) 629 printf("%s: save metadata failed\n", DEVNAME(sd->sd_sc)); 630 631 sd->sd_must_flush = 0; 632 splx(s); 633} 634 635int 636sr_meta_save(struct sr_discipline *sd, u_int32_t flags) 637{ 638 struct sr_softc *sc = sd->sd_sc; 639 struct sr_metadata *sm = sd->sd_meta, *m; 640 struct sr_meta_driver *s; 641 struct sr_chunk *src; 642 struct sr_meta_chunk *cm; 643 struct sr_workunit wu; 644 struct sr_meta_opt_hdr *omh; 645 struct sr_meta_opt_item *omi; 646 int i; 647 648 DNPRINTF(SR_D_META, "%s: sr_meta_save %s\n", 649 DEVNAME(sc), sd->sd_meta->ssd_devname); 650 651 if (!sm) { 652 printf("%s: no in memory copy of metadata\n", DEVNAME(sc)); 653 goto bad; 654 } 655 656 /* meta scratchpad */ 657 s = &smd[sd->sd_meta_type]; 658 m = malloc(SR_META_SIZE * DEV_BSIZE, M_DEVBUF, M_ZERO | M_NOWAIT); 659 if (!m) { 660 printf("%s: could not allocate metadata scratch area\n", 661 DEVNAME(sc)); 662 goto bad; 663 } 664 665 /* from here on out metadata is updated */ 666restart: 667 sm->ssd_ondisk++; 668 sm->ssd_meta_flags = flags; 669 memcpy(m, sm, sizeof(*m)); 670 671 /* Chunk metadata. */ 672 cm = (struct sr_meta_chunk *)(m + 1); 673 for (i = 0; i < sm->ssdi.ssd_chunk_no; i++) { 674 src = sd->sd_vol.sv_chunks[i]; 675 memcpy(cm, &src->src_meta, sizeof(*cm)); 676 cm++; 677 } 678 679 /* Optional metadata. */ 680 omh = (struct sr_meta_opt_hdr *)(cm); 681 SLIST_FOREACH(omi, &sd->sd_meta_opt, omi_link) { 682 DNPRINTF(SR_D_META, "%s: saving optional metadata type %u with " 683 "length %u\n", DEVNAME(sc), omi->omi_som->som_type, 684 omi->omi_som->som_length); 685 bzero(&omi->omi_som->som_checksum, MD5_DIGEST_LENGTH); 686 sr_checksum(sc, omi->omi_som, &omi->omi_som->som_checksum, 687 omi->omi_som->som_length); 688 memcpy(omh, omi->omi_som, omi->omi_som->som_length); 689 omh = (struct sr_meta_opt_hdr *)((u_int8_t *)omh + 690 omi->omi_som->som_length); 691 } 692 693 for (i = 0; i < sm->ssdi.ssd_chunk_no; i++) { 694 src = sd->sd_vol.sv_chunks[i]; 695 696 /* skip disks that are offline */ 697 if (src->src_meta.scm_status == BIOC_SDOFFLINE) 698 continue; 699 700 /* calculate metadata checksum for correct chunk */ 701 m->ssdi.ssd_chunk_id = i; 702 sr_checksum(sc, m, &m->ssd_checksum, 703 sizeof(struct sr_meta_invariant)); 704 705#ifdef SR_DEBUG 706 DNPRINTF(SR_D_META, "%s: sr_meta_save %s: volid: %d " 707 "chunkid: %d checksum: ", 708 DEVNAME(sc), src->src_meta.scmi.scm_devname, 709 m->ssdi.ssd_volid, m->ssdi.ssd_chunk_id); 710 711 if (sr_debug & SR_D_META) 712 sr_checksum_print((u_int8_t *)&m->ssd_checksum); 713 DNPRINTF(SR_D_META, "\n"); 714 sr_meta_print(m); 715#endif 716 717 /* translate and write to disk */ 718 if (s->smd_write(sd, src->src_dev_mm, m, NULL /* XXX */)) { 719 printf("%s: could not write metadata to %s\n", 720 DEVNAME(sc), src->src_devname); 721 /* restart the meta write */ 722 src->src_meta.scm_status = BIOC_SDOFFLINE; 723 /* XXX recalculate volume status */ 724 goto restart; 725 } 726 } 727 728 /* not all disciplines have sync */ 729 if (sd->sd_scsi_sync) { 730 bzero(&wu, sizeof(wu)); 731 wu.swu_flags |= SR_WUF_FAKE; 732 wu.swu_dis = sd; 733 sd->sd_scsi_sync(&wu); 734 } 735 free(m, M_DEVBUF, SR_META_SIZE * DEV_BSIZE); 736 return (0); 737bad: 738 return (1); 739} 740 741int 742sr_meta_read(struct sr_discipline *sd) 743{ 744 struct sr_softc *sc = sd->sd_sc; 745 struct sr_chunk_head *cl = &sd->sd_vol.sv_chunk_list; 746 struct sr_metadata *sm; 747 struct sr_chunk *ch_entry; 748 struct sr_meta_chunk *cp; 749 struct sr_meta_driver *s; 750 void *fm = NULL; 751 int no_disk = 0, got_meta = 0; 752 753 DNPRINTF(SR_D_META, "%s: sr_meta_read\n", DEVNAME(sc)); 754 755 sm = malloc(SR_META_SIZE * DEV_BSIZE, M_DEVBUF, M_WAITOK | M_ZERO); 756 s = &smd[sd->sd_meta_type]; 757 if (sd->sd_meta_type != SR_META_F_NATIVE) 758 fm = malloc(s->smd_size, M_DEVBUF, M_WAITOK | M_ZERO); 759 760 cp = (struct sr_meta_chunk *)(sm + 1); 761 SLIST_FOREACH(ch_entry, cl, src_link) { 762 /* skip disks that are offline */ 763 if (ch_entry->src_meta.scm_status == BIOC_SDOFFLINE) { 764 DNPRINTF(SR_D_META, 765 "%s: %s chunk marked offline, spoofing status\n", 766 DEVNAME(sc), ch_entry->src_devname); 767 cp++; /* adjust chunk pointer to match failure */ 768 continue; 769 } else if (s->smd_read(sd, ch_entry->src_dev_mm, sm, fm)) { 770 /* read and translate */ 771 /* XXX mark chunk offline, elsewhere!! */ 772 ch_entry->src_meta.scm_status = BIOC_SDOFFLINE; 773 cp++; /* adjust chunk pointer to match failure */ 774 DNPRINTF(SR_D_META, "%s: sr_meta_read failed\n", 775 DEVNAME(sc)); 776 continue; 777 } 778 779 if (sm->ssdi.ssd_magic != SR_MAGIC) { 780 DNPRINTF(SR_D_META, "%s: sr_meta_read !SR_MAGIC\n", 781 DEVNAME(sc)); 782 continue; 783 } 784 785 /* validate metadata */ 786 if (sr_meta_validate(sd, ch_entry->src_dev_mm, sm, fm)) { 787 DNPRINTF(SR_D_META, "%s: invalid metadata\n", 788 DEVNAME(sc)); 789 no_disk = -1; 790 goto done; 791 } 792 793 /* assume first chunk contains metadata */ 794 if (got_meta == 0) { 795 sr_meta_opt_load(sc, sm, &sd->sd_meta_opt); 796 memcpy(sd->sd_meta, sm, sizeof(*sd->sd_meta)); 797 got_meta = 1; 798 } 799 800 memcpy(&ch_entry->src_meta, cp, sizeof(ch_entry->src_meta)); 801 802 no_disk++; 803 cp++; 804 } 805 806 free(sm, M_DEVBUF, SR_META_SIZE * DEV_BSIZE); 807 free(fm, M_DEVBUF, s->smd_size); 808 809done: 810 DNPRINTF(SR_D_META, "%s: sr_meta_read found %d parts\n", DEVNAME(sc), 811 no_disk); 812 return (no_disk); 813} 814 815void 816sr_meta_opt_load(struct sr_softc *sc, struct sr_metadata *sm, 817 struct sr_meta_opt_head *som) 818{ 819 struct sr_meta_opt_hdr *omh; 820 struct sr_meta_opt_item *omi; 821 u_int8_t checksum[MD5_DIGEST_LENGTH]; 822 int i; 823 824 /* Process optional metadata. */ 825 omh = (struct sr_meta_opt_hdr *)((u_int8_t *)(sm + 1) + 826 sizeof(struct sr_meta_chunk) * sm->ssdi.ssd_chunk_no); 827 for (i = 0; i < sm->ssdi.ssd_opt_no; i++) { 828 829 omi = malloc(sizeof(struct sr_meta_opt_item), M_DEVBUF, 830 M_WAITOK | M_ZERO); 831 SLIST_INSERT_HEAD(som, omi, omi_link); 832 833 if (omh->som_length == 0) { 834 835 /* Load old fixed length optional metadata. */ 836 DNPRINTF(SR_D_META, "%s: old optional metadata of type " 837 "%u\n", DEVNAME(sc), omh->som_type); 838 839 /* Validate checksum. */ 840 sr_checksum(sc, (void *)omh, &checksum, 841 SR_OLD_META_OPT_SIZE - MD5_DIGEST_LENGTH); 842 if (bcmp(&checksum, (void *)omh + SR_OLD_META_OPT_MD5, 843 sizeof(checksum))) 844 panic("%s: invalid optional metadata checksum", 845 DEVNAME(sc)); 846 847 /* Determine correct length. */ 848 switch (omh->som_type) { 849 case SR_OPT_CRYPTO: 850 omh->som_length = sizeof(struct sr_meta_crypto); 851 break; 852 case SR_OPT_BOOT: 853 omh->som_length = sizeof(struct sr_meta_boot); 854 break; 855 case SR_OPT_KEYDISK: 856 omh->som_length = 857 sizeof(struct sr_meta_keydisk); 858 break; 859 default: 860 panic("unknown old optional metadata type %u", 861 omh->som_type); 862 } 863 864 omi->omi_som = malloc(omh->som_length, M_DEVBUF, 865 M_WAITOK | M_ZERO); 866 memcpy((u_int8_t *)omi->omi_som + sizeof(*omi->omi_som), 867 (u_int8_t *)omh + SR_OLD_META_OPT_OFFSET, 868 omh->som_length - sizeof(*omi->omi_som)); 869 omi->omi_som->som_type = omh->som_type; 870 omi->omi_som->som_length = omh->som_length; 871 872 omh = (struct sr_meta_opt_hdr *)((void *)omh + 873 SR_OLD_META_OPT_SIZE); 874 } else { 875 876 /* Load variable length optional metadata. */ 877 DNPRINTF(SR_D_META, "%s: optional metadata of type %u, " 878 "length %u\n", DEVNAME(sc), omh->som_type, 879 omh->som_length); 880 omi->omi_som = malloc(omh->som_length, M_DEVBUF, 881 M_WAITOK | M_ZERO); 882 memcpy(omi->omi_som, omh, omh->som_length); 883 884 /* Validate checksum. */ 885 memcpy(&checksum, &omi->omi_som->som_checksum, 886 MD5_DIGEST_LENGTH); 887 bzero(&omi->omi_som->som_checksum, MD5_DIGEST_LENGTH); 888 sr_checksum(sc, omi->omi_som, 889 &omi->omi_som->som_checksum, omh->som_length); 890 if (bcmp(&checksum, &omi->omi_som->som_checksum, 891 sizeof(checksum))) 892 panic("%s: invalid optional metadata checksum", 893 DEVNAME(sc)); 894 895 omh = (struct sr_meta_opt_hdr *)((void *)omh + 896 omh->som_length); 897 } 898 } 899} 900 901int 902sr_meta_validate(struct sr_discipline *sd, dev_t dev, struct sr_metadata *sm, 903 void *fm) 904{ 905 struct sr_softc *sc = sd->sd_sc; 906 struct sr_meta_driver *s; 907#ifdef SR_DEBUG 908 struct sr_meta_chunk *mc; 909#endif 910 u_int8_t checksum[MD5_DIGEST_LENGTH]; 911 char devname[32]; 912 int rv = 1; 913 914 DNPRINTF(SR_D_META, "%s: sr_meta_validate(%p)\n", DEVNAME(sc), sm); 915 916 sr_meta_getdevname(sc, dev, devname, sizeof(devname)); 917 918 s = &smd[sd->sd_meta_type]; 919 if (sd->sd_meta_type != SR_META_F_NATIVE) 920 if (s->smd_validate(sd, sm, fm)) { 921 sr_error(sc, "invalid foreign metadata"); 922 goto done; 923 } 924 925 /* 926 * at this point all foreign metadata has been translated to the native 927 * format and will be treated just like the native format 928 */ 929 930 if (sm->ssdi.ssd_magic != SR_MAGIC) { 931 sr_error(sc, "not valid softraid metadata"); 932 goto done; 933 } 934 935 /* Verify metadata checksum. */ 936 sr_checksum(sc, sm, &checksum, sizeof(struct sr_meta_invariant)); 937 if (bcmp(&checksum, &sm->ssd_checksum, sizeof(checksum))) { 938 sr_error(sc, "invalid metadata checksum"); 939 goto done; 940 } 941 942 /* Handle changes between versions. */ 943 if (sm->ssdi.ssd_version == 3) { 944 945 /* 946 * Version 3 - update metadata version and fix up data blkno 947 * value since this did not exist in version 3. 948 */ 949 if (sm->ssd_data_blkno == 0) 950 sm->ssd_data_blkno = SR_META_V3_DATA_OFFSET; 951 sm->ssdi.ssd_secsize = DEV_BSIZE; 952 953 } else if (sm->ssdi.ssd_version == 4) { 954 955 /* 956 * Version 4 - original metadata format did not store 957 * data blkno so fix this up if necessary. 958 */ 959 if (sm->ssd_data_blkno == 0) 960 sm->ssd_data_blkno = SR_DATA_OFFSET; 961 sm->ssdi.ssd_secsize = DEV_BSIZE; 962 963 } else if (sm->ssdi.ssd_version == 5) { 964 965 /* 966 * Version 5 - variable length optional metadata. Migration 967 * from earlier fixed length optional metadata is handled 968 * in sr_meta_read(). 969 */ 970 sm->ssdi.ssd_secsize = DEV_BSIZE; 971 972 } else if (sm->ssdi.ssd_version == SR_META_VERSION) { 973 974 /* 975 * Version 6 - store & report a sector size. 976 */ 977 978 } else { 979 980 sr_error(sc, "cannot read metadata version %u on %s, " 981 "expected version %u or earlier", 982 sm->ssdi.ssd_version, devname, SR_META_VERSION); 983 goto done; 984 985 } 986 987 /* Update version number and revision string. */ 988 sm->ssdi.ssd_version = SR_META_VERSION; 989 snprintf(sm->ssdi.ssd_revision, sizeof(sm->ssdi.ssd_revision), 990 "%03d", SR_META_VERSION); 991 992#ifdef SR_DEBUG 993 /* warn if disk changed order */ 994 mc = (struct sr_meta_chunk *)(sm + 1); 995 if (strncmp(mc[sm->ssdi.ssd_chunk_id].scmi.scm_devname, devname, 996 sizeof(mc[sm->ssdi.ssd_chunk_id].scmi.scm_devname))) 997 DNPRINTF(SR_D_META, "%s: roaming device %s -> %s\n", 998 DEVNAME(sc), mc[sm->ssdi.ssd_chunk_id].scmi.scm_devname, 999 devname); 1000#endif 1001 1002 /* we have meta data on disk */ 1003 DNPRINTF(SR_D_META, "%s: sr_meta_validate valid metadata %s\n", 1004 DEVNAME(sc), devname); 1005 1006 rv = 0; 1007done: 1008 return (rv); 1009} 1010 1011int 1012sr_meta_native_bootprobe(struct sr_softc *sc, dev_t devno, 1013 struct sr_boot_chunk_head *bch) 1014{ 1015 struct vnode *vn; 1016 struct disklabel label; 1017 struct sr_metadata *md = NULL; 1018 struct sr_discipline *fake_sd = NULL; 1019 struct sr_boot_chunk *bc; 1020 char devname[32]; 1021 dev_t chrdev, rawdev; 1022 int error, i; 1023 int rv = SR_META_NOTCLAIMED; 1024 1025 DNPRINTF(SR_D_META, "%s: sr_meta_native_bootprobe\n", DEVNAME(sc)); 1026 1027 /* 1028 * Use character raw device to avoid SCSI complaints about missing 1029 * media on removable media devices. 1030 */ 1031 chrdev = blktochr(devno); 1032 rawdev = MAKEDISKDEV(major(chrdev), DISKUNIT(devno), RAW_PART); 1033 if (cdevvp(rawdev, &vn)) { 1034 sr_error(sc, "sr_meta_native_bootprobe: cannot allocate vnode"); 1035 goto done; 1036 } 1037 1038 /* open device */ 1039 error = VOP_OPEN(vn, FREAD, NOCRED, curproc); 1040 if (error) { 1041 DNPRINTF(SR_D_META, "%s: sr_meta_native_bootprobe open " 1042 "failed\n", DEVNAME(sc)); 1043 vput(vn); 1044 goto done; 1045 } 1046 1047 /* get disklabel */ 1048 error = VOP_IOCTL(vn, DIOCGDINFO, (caddr_t)&label, FREAD, NOCRED, 1049 curproc); 1050 if (error) { 1051 DNPRINTF(SR_D_META, "%s: sr_meta_native_bootprobe ioctl " 1052 "failed\n", DEVNAME(sc)); 1053 VOP_CLOSE(vn, FREAD, NOCRED, curproc); 1054 vput(vn); 1055 goto done; 1056 } 1057 1058 /* we are done, close device */ 1059 error = VOP_CLOSE(vn, FREAD, NOCRED, curproc); 1060 if (error) { 1061 DNPRINTF(SR_D_META, "%s: sr_meta_native_bootprobe close " 1062 "failed\n", DEVNAME(sc)); 1063 vput(vn); 1064 goto done; 1065 } 1066 vput(vn); 1067 1068 md = malloc(SR_META_SIZE * DEV_BSIZE, M_DEVBUF, M_ZERO | M_NOWAIT); 1069 if (md == NULL) { 1070 sr_error(sc, "not enough memory for metadata buffer"); 1071 goto done; 1072 } 1073 1074 /* create fake sd to use utility functions */ 1075 fake_sd = malloc(sizeof(struct sr_discipline), M_DEVBUF, 1076 M_ZERO | M_NOWAIT); 1077 if (fake_sd == NULL) { 1078 sr_error(sc, "not enough memory for fake discipline"); 1079 goto done; 1080 } 1081 fake_sd->sd_sc = sc; 1082 fake_sd->sd_meta_type = SR_META_F_NATIVE; 1083 1084 for (i = 0; i < MAXPARTITIONS; i++) { 1085 if (label.d_partitions[i].p_fstype != FS_RAID) 1086 continue; 1087 1088 /* open partition */ 1089 rawdev = MAKEDISKDEV(major(devno), DISKUNIT(devno), i); 1090 if (bdevvp(rawdev, &vn)) { 1091 sr_error(sc, "sr_meta_native_bootprobe: cannot " 1092 "allocate vnode for partition"); 1093 goto done; 1094 } 1095 error = VOP_OPEN(vn, FREAD, NOCRED, curproc); 1096 if (error) { 1097 DNPRINTF(SR_D_META, "%s: sr_meta_native_bootprobe " 1098 "open failed, partition %d\n", 1099 DEVNAME(sc), i); 1100 vput(vn); 1101 continue; 1102 } 1103 1104 if (sr_meta_native_read(fake_sd, rawdev, md, NULL)) { 1105 sr_error(sc, "native bootprobe could not read native " 1106 "metadata"); 1107 VOP_CLOSE(vn, FREAD, NOCRED, curproc); 1108 vput(vn); 1109 continue; 1110 } 1111 1112 /* are we a softraid partition? */ 1113 if (md->ssdi.ssd_magic != SR_MAGIC) { 1114 VOP_CLOSE(vn, FREAD, NOCRED, curproc); 1115 vput(vn); 1116 continue; 1117 } 1118 1119 sr_meta_getdevname(sc, rawdev, devname, sizeof(devname)); 1120 if (sr_meta_validate(fake_sd, rawdev, md, NULL) == 0) { 1121 /* XXX fix M_WAITOK, this is boot time */ 1122 bc = malloc(sizeof(struct sr_boot_chunk), 1123 M_DEVBUF, M_WAITOK | M_ZERO); 1124 bc->sbc_metadata = malloc(sizeof(struct sr_metadata), 1125 M_DEVBUF, M_WAITOK | M_ZERO); 1126 memcpy(bc->sbc_metadata, md, sizeof(struct sr_metadata)); 1127 bc->sbc_mm = rawdev; 1128 SLIST_INSERT_HEAD(bch, bc, sbc_link); 1129 rv = SR_META_CLAIMED; 1130 } 1131 1132 /* we are done, close partition */ 1133 VOP_CLOSE(vn, FREAD, NOCRED, curproc); 1134 vput(vn); 1135 } 1136 1137done: 1138 free(fake_sd, M_DEVBUF, sizeof(struct sr_discipline)); 1139 free(md, M_DEVBUF, SR_META_SIZE * DEV_BSIZE); 1140 1141 return (rv); 1142} 1143 1144int 1145sr_boot_assembly(struct sr_softc *sc) 1146{ 1147 struct sr_boot_volume_head bvh; 1148 struct sr_boot_chunk_head bch, kdh; 1149 struct sr_boot_volume *bv, *bv1, *bv2; 1150 struct sr_boot_chunk *bc, *bcnext, *bc1, *bc2; 1151 struct sr_disk_head sdklist; 1152 struct sr_disk *sdk; 1153 struct disk *dk; 1154 struct bioc_createraid bcr; 1155 struct sr_meta_chunk *hm; 1156 struct sr_chunk_head *cl; 1157 struct sr_chunk *hotspare, *chunk, *last; 1158 u_int64_t *ondisk = NULL; 1159 dev_t *devs = NULL; 1160 void *data; 1161 char devname[32]; 1162 int rv = 0, i; 1163 1164 DNPRINTF(SR_D_META, "%s: sr_boot_assembly\n", DEVNAME(sc)); 1165 1166 SLIST_INIT(&sdklist); 1167 SLIST_INIT(&bvh); 1168 SLIST_INIT(&bch); 1169 SLIST_INIT(&kdh); 1170 1171 dk = TAILQ_FIRST(&disklist); 1172 while (dk != NULL) { 1173 1174 /* See if this disk has been checked. */ 1175 SLIST_FOREACH(sdk, &sdklist, sdk_link) 1176 if (sdk->sdk_devno == dk->dk_devno) 1177 break; 1178 1179 if (sdk != NULL || dk->dk_devno == NODEV) { 1180 dk = TAILQ_NEXT(dk, dk_link); 1181 continue; 1182 } 1183 1184 /* Add this disk to the list that we've checked. */ 1185 sdk = malloc(sizeof(struct sr_disk), M_DEVBUF, 1186 M_NOWAIT | M_ZERO); 1187 if (sdk == NULL) 1188 goto unwind; 1189 sdk->sdk_devno = dk->dk_devno; 1190 SLIST_INSERT_HEAD(&sdklist, sdk, sdk_link); 1191 1192 /* Only check sd(4) and wd(4) devices. */ 1193 if (strncmp(dk->dk_name, "sd", 2) && 1194 strncmp(dk->dk_name, "wd", 2)) { 1195 dk = TAILQ_NEXT(dk, dk_link); 1196 continue; 1197 } 1198 1199 /* native softraid uses partitions */ 1200 rw_enter_write(&sc->sc_lock); 1201 bio_status_init(&sc->sc_status, &sc->sc_dev); 1202 sr_meta_native_bootprobe(sc, dk->dk_devno, &bch); 1203 rw_exit_write(&sc->sc_lock); 1204 1205 /* probe non-native disks if native failed. */ 1206 1207 /* Restart scan since we may have slept. */ 1208 dk = TAILQ_FIRST(&disklist); 1209 } 1210 1211 /* 1212 * Create a list of volumes and associate chunks with each volume. 1213 */ 1214 for (bc = SLIST_FIRST(&bch); bc != NULL; bc = bcnext) { 1215 1216 bcnext = SLIST_NEXT(bc, sbc_link); 1217 SLIST_REMOVE(&bch, bc, sr_boot_chunk, sbc_link); 1218 bc->sbc_chunk_id = bc->sbc_metadata->ssdi.ssd_chunk_id; 1219 1220 /* Handle key disks separately. */ 1221 if (bc->sbc_metadata->ssdi.ssd_level == SR_KEYDISK_LEVEL) { 1222 SLIST_INSERT_HEAD(&kdh, bc, sbc_link); 1223 continue; 1224 } 1225 1226 SLIST_FOREACH(bv, &bvh, sbv_link) { 1227 if (bcmp(&bc->sbc_metadata->ssdi.ssd_uuid, 1228 &bv->sbv_uuid, 1229 sizeof(bc->sbc_metadata->ssdi.ssd_uuid)) == 0) 1230 break; 1231 } 1232 1233 if (bv == NULL) { 1234 bv = malloc(sizeof(struct sr_boot_volume), 1235 M_DEVBUF, M_NOWAIT | M_ZERO); 1236 if (bv == NULL) { 1237 printf("%s: failed to allocate boot volume\n", 1238 DEVNAME(sc)); 1239 goto unwind; 1240 } 1241 1242 bv->sbv_level = bc->sbc_metadata->ssdi.ssd_level; 1243 bv->sbv_volid = bc->sbc_metadata->ssdi.ssd_volid; 1244 bv->sbv_chunk_no = bc->sbc_metadata->ssdi.ssd_chunk_no; 1245 bv->sbv_flags = bc->sbc_metadata->ssdi.ssd_vol_flags; 1246 memcpy(&bv->sbv_uuid, &bc->sbc_metadata->ssdi.ssd_uuid, 1247 sizeof(bc->sbc_metadata->ssdi.ssd_uuid)); 1248 SLIST_INIT(&bv->sbv_chunks); 1249 1250 /* Maintain volume order. */ 1251 bv2 = NULL; 1252 SLIST_FOREACH(bv1, &bvh, sbv_link) { 1253 if (bv1->sbv_volid > bv->sbv_volid) 1254 break; 1255 bv2 = bv1; 1256 } 1257 if (bv2 == NULL) { 1258 DNPRINTF(SR_D_META, "%s: insert volume %u " 1259 "at head\n", DEVNAME(sc), bv->sbv_volid); 1260 SLIST_INSERT_HEAD(&bvh, bv, sbv_link); 1261 } else { 1262 DNPRINTF(SR_D_META, "%s: insert volume %u " 1263 "after %u\n", DEVNAME(sc), bv->sbv_volid, 1264 bv2->sbv_volid); 1265 SLIST_INSERT_AFTER(bv2, bv, sbv_link); 1266 } 1267 } 1268 1269 /* Maintain chunk order. */ 1270 bc2 = NULL; 1271 SLIST_FOREACH(bc1, &bv->sbv_chunks, sbc_link) { 1272 if (bc1->sbc_chunk_id > bc->sbc_chunk_id) 1273 break; 1274 bc2 = bc1; 1275 } 1276 if (bc2 == NULL) { 1277 DNPRINTF(SR_D_META, "%s: volume %u insert chunk %u " 1278 "at head\n", DEVNAME(sc), bv->sbv_volid, 1279 bc->sbc_chunk_id); 1280 SLIST_INSERT_HEAD(&bv->sbv_chunks, bc, sbc_link); 1281 } else { 1282 DNPRINTF(SR_D_META, "%s: volume %u insert chunk %u " 1283 "after %u\n", DEVNAME(sc), bv->sbv_volid, 1284 bc->sbc_chunk_id, bc2->sbc_chunk_id); 1285 SLIST_INSERT_AFTER(bc2, bc, sbc_link); 1286 } 1287 1288 bv->sbv_chunks_found++; 1289 } 1290 1291 /* Allocate memory for device and ondisk version arrays. */ 1292 devs = mallocarray(BIOC_CRMAXLEN, sizeof(dev_t), M_DEVBUF, 1293 M_NOWAIT); 1294 if (devs == NULL) { 1295 printf("%s: failed to allocate device array\n", DEVNAME(sc)); 1296 goto unwind; 1297 } 1298 ondisk = mallocarray(BIOC_CRMAXLEN, sizeof(u_int64_t), M_DEVBUF, 1299 M_NOWAIT); 1300 if (ondisk == NULL) { 1301 printf("%s: failed to allocate ondisk array\n", DEVNAME(sc)); 1302 goto unwind; 1303 } 1304 1305 /* 1306 * Assemble hotspare "volumes". 1307 */ 1308 SLIST_FOREACH(bv, &bvh, sbv_link) { 1309 1310 /* Check if this is a hotspare "volume". */ 1311 if (bv->sbv_level != SR_HOTSPARE_LEVEL || 1312 bv->sbv_chunk_no != 1) 1313 continue; 1314 1315#ifdef SR_DEBUG 1316 DNPRINTF(SR_D_META, "%s: assembling hotspare volume ", 1317 DEVNAME(sc)); 1318 if (sr_debug & SR_D_META) 1319 sr_uuid_print(&bv->sbv_uuid, 0); 1320 DNPRINTF(SR_D_META, " volid %u with %u chunks\n", 1321 bv->sbv_volid, bv->sbv_chunk_no); 1322#endif 1323 1324 /* Create hotspare chunk metadata. */ 1325 hotspare = malloc(sizeof(struct sr_chunk), M_DEVBUF, 1326 M_NOWAIT | M_ZERO); 1327 if (hotspare == NULL) { 1328 printf("%s: failed to allocate hotspare\n", 1329 DEVNAME(sc)); 1330 goto unwind; 1331 } 1332 1333 bc = SLIST_FIRST(&bv->sbv_chunks); 1334 sr_meta_getdevname(sc, bc->sbc_mm, devname, sizeof(devname)); 1335 hotspare->src_dev_mm = bc->sbc_mm; 1336 strlcpy(hotspare->src_devname, devname, 1337 sizeof(hotspare->src_devname)); 1338 hotspare->src_size = bc->sbc_metadata->ssdi.ssd_size; 1339 1340 hm = &hotspare->src_meta; 1341 hm->scmi.scm_volid = SR_HOTSPARE_VOLID; 1342 hm->scmi.scm_chunk_id = 0; 1343 hm->scmi.scm_size = bc->sbc_metadata->ssdi.ssd_size; 1344 hm->scmi.scm_coerced_size = bc->sbc_metadata->ssdi.ssd_size; 1345 strlcpy(hm->scmi.scm_devname, devname, 1346 sizeof(hm->scmi.scm_devname)); 1347 memcpy(&hm->scmi.scm_uuid, &bc->sbc_metadata->ssdi.ssd_uuid, 1348 sizeof(struct sr_uuid)); 1349 1350 sr_checksum(sc, hm, &hm->scm_checksum, 1351 sizeof(struct sr_meta_chunk_invariant)); 1352 1353 hm->scm_status = BIOC_SDHOTSPARE; 1354 1355 /* Add chunk to hotspare list. */ 1356 rw_enter_write(&sc->sc_hs_lock); 1357 cl = &sc->sc_hotspare_list; 1358 if (SLIST_EMPTY(cl)) 1359 SLIST_INSERT_HEAD(cl, hotspare, src_link); 1360 else { 1361 SLIST_FOREACH(chunk, cl, src_link) 1362 last = chunk; 1363 SLIST_INSERT_AFTER(last, hotspare, src_link); 1364 } 1365 sc->sc_hotspare_no++; 1366 rw_exit_write(&sc->sc_hs_lock); 1367 1368 } 1369 1370 /* 1371 * Assemble RAID volumes. 1372 */ 1373 SLIST_FOREACH(bv, &bvh, sbv_link) { 1374 1375 bzero(&bcr, sizeof(bcr)); 1376 data = NULL; 1377 1378 /* Check if this is a hotspare "volume". */ 1379 if (bv->sbv_level == SR_HOTSPARE_LEVEL && 1380 bv->sbv_chunk_no == 1) 1381 continue; 1382 1383 /* 1384 * Skip volumes that are marked as no auto assemble, unless 1385 * this was the volume which we actually booted from. 1386 */ 1387 if (bcmp(&sr_bootuuid, &bv->sbv_uuid, sizeof(sr_bootuuid)) != 0) 1388 if (bv->sbv_flags & BIOC_SCNOAUTOASSEMBLE) 1389 continue; 1390 1391#ifdef SR_DEBUG 1392 DNPRINTF(SR_D_META, "%s: assembling volume ", DEVNAME(sc)); 1393 if (sr_debug & SR_D_META) 1394 sr_uuid_print(&bv->sbv_uuid, 0); 1395 DNPRINTF(SR_D_META, " volid %u with %u chunks\n", 1396 bv->sbv_volid, bv->sbv_chunk_no); 1397#endif 1398 1399 /* 1400 * If this is a crypto volume, try to find a matching 1401 * key disk... 1402 */ 1403 bcr.bc_key_disk = NODEV; 1404 if (bv->sbv_level == 'C' || bv->sbv_level == 0x1C) { 1405 SLIST_FOREACH(bc, &kdh, sbc_link) { 1406 if (bcmp(&bc->sbc_metadata->ssdi.ssd_uuid, 1407 &bv->sbv_uuid, 1408 sizeof(bc->sbc_metadata->ssdi.ssd_uuid)) 1409 == 0) 1410 bcr.bc_key_disk = bc->sbc_mm; 1411 } 1412 } 1413 1414 for (i = 0; i < BIOC_CRMAXLEN; i++) { 1415 devs[i] = NODEV; /* mark device as illegal */ 1416 ondisk[i] = 0; 1417 } 1418 1419 SLIST_FOREACH(bc, &bv->sbv_chunks, sbc_link) { 1420 if (devs[bc->sbc_chunk_id] != NODEV) { 1421 bv->sbv_chunks_found--; 1422 sr_meta_getdevname(sc, bc->sbc_mm, devname, 1423 sizeof(devname)); 1424 printf("%s: found duplicate chunk %u for " 1425 "volume %u on device %s\n", DEVNAME(sc), 1426 bc->sbc_chunk_id, bv->sbv_volid, devname); 1427 } 1428 1429 if (devs[bc->sbc_chunk_id] == NODEV || 1430 bc->sbc_metadata->ssd_ondisk > 1431 ondisk[bc->sbc_chunk_id]) { 1432 devs[bc->sbc_chunk_id] = bc->sbc_mm; 1433 ondisk[bc->sbc_chunk_id] = 1434 bc->sbc_metadata->ssd_ondisk; 1435 DNPRINTF(SR_D_META, "%s: using ondisk " 1436 "metadata version %llu for chunk %u\n", 1437 DEVNAME(sc), ondisk[bc->sbc_chunk_id], 1438 bc->sbc_chunk_id); 1439 } 1440 } 1441 1442 if (bv->sbv_chunk_no != bv->sbv_chunks_found) { 1443 printf("%s: not all chunks were provided; " 1444 "attempting to bring volume %d online\n", 1445 DEVNAME(sc), bv->sbv_volid); 1446 } 1447 1448 bcr.bc_level = bv->sbv_level; 1449 bcr.bc_dev_list_len = bv->sbv_chunk_no * sizeof(dev_t); 1450 bcr.bc_dev_list = devs; 1451 bcr.bc_flags = BIOC_SCDEVT | 1452 (bv->sbv_flags & BIOC_SCNOAUTOASSEMBLE); 1453 1454 if ((bv->sbv_level == 'C' || bv->sbv_level == 0x1C) && 1455 bcmp(&sr_bootuuid, &bv->sbv_uuid, sizeof(sr_bootuuid)) == 0) 1456 data = sr_bootkey; 1457 1458 rw_enter_write(&sc->sc_lock); 1459 bio_status_init(&sc->sc_status, &sc->sc_dev); 1460 sr_ioctl_createraid(sc, &bcr, 0, data); 1461 rw_exit_write(&sc->sc_lock); 1462 1463 rv++; 1464 } 1465 1466 /* done with metadata */ 1467unwind: 1468 /* Free boot volumes and associated chunks. */ 1469 for (bv1 = SLIST_FIRST(&bvh); bv1 != NULL; bv1 = bv2) { 1470 bv2 = SLIST_NEXT(bv1, sbv_link); 1471 for (bc1 = SLIST_FIRST(&bv1->sbv_chunks); bc1 != NULL; 1472 bc1 = bc2) { 1473 bc2 = SLIST_NEXT(bc1, sbc_link); 1474 free(bc1->sbc_metadata, M_DEVBUF, 1475 sizeof(*bc1->sbc_metadata)); 1476 free(bc1, M_DEVBUF, sizeof(*bc1)); 1477 } 1478 free(bv1, M_DEVBUF, sizeof(*bv1)); 1479 } 1480 /* Free keydisks chunks. */ 1481 for (bc1 = SLIST_FIRST(&kdh); bc1 != NULL; bc1 = bc2) { 1482 bc2 = SLIST_NEXT(bc1, sbc_link); 1483 free(bc1->sbc_metadata, M_DEVBUF, sizeof(*bc1->sbc_metadata)); 1484 free(bc1, M_DEVBUF, sizeof(*bc1)); 1485 } 1486 /* Free unallocated chunks. */ 1487 for (bc1 = SLIST_FIRST(&bch); bc1 != NULL; bc1 = bc2) { 1488 bc2 = SLIST_NEXT(bc1, sbc_link); 1489 free(bc1->sbc_metadata, M_DEVBUF, sizeof(*bc1->sbc_metadata)); 1490 free(bc1, M_DEVBUF, sizeof(*bc1)); 1491 } 1492 1493 while (!SLIST_EMPTY(&sdklist)) { 1494 sdk = SLIST_FIRST(&sdklist); 1495 SLIST_REMOVE_HEAD(&sdklist, sdk_link); 1496 free(sdk, M_DEVBUF, sizeof(*sdk)); 1497 } 1498 1499 free(devs, M_DEVBUF, BIOC_CRMAXLEN * sizeof(dev_t)); 1500 free(ondisk, M_DEVBUF, BIOC_CRMAXLEN * sizeof(u_int64_t)); 1501 1502 return (rv); 1503} 1504 1505void 1506sr_map_root(void) 1507{ 1508 struct sr_softc *sc = softraid0; 1509 struct sr_discipline *sd; 1510 struct sr_meta_opt_item *omi; 1511 struct sr_meta_boot *sbm; 1512 u_char duid[8]; 1513 int i; 1514 1515 if (sc == NULL) 1516 return; 1517 1518 DNPRINTF(SR_D_MISC, "%s: sr_map_root\n", DEVNAME(sc)); 1519 1520 bzero(duid, sizeof(duid)); 1521 if (bcmp(rootduid, duid, sizeof(duid)) == 0) { 1522 DNPRINTF(SR_D_MISC, "%s: root duid is zero\n", DEVNAME(sc)); 1523 return; 1524 } 1525 1526 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) { 1527 SLIST_FOREACH(omi, &sd->sd_meta_opt, omi_link) { 1528 if (omi->omi_som->som_type != SR_OPT_BOOT) 1529 continue; 1530 sbm = (struct sr_meta_boot *)omi->omi_som; 1531 for (i = 0; i < SR_MAX_BOOT_DISKS; i++) { 1532 if (bcmp(rootduid, sbm->sbm_boot_duid[i], 1533 sizeof(rootduid)) == 0) { 1534 memcpy(rootduid, sbm->sbm_root_duid, 1535 sizeof(rootduid)); 1536 DNPRINTF(SR_D_MISC, "%s: root duid " 1537 "mapped to %s\n", DEVNAME(sc), 1538 duid_format(rootduid)); 1539 return; 1540 } 1541 } 1542 } 1543 } 1544} 1545 1546int 1547sr_meta_native_probe(struct sr_softc *sc, struct sr_chunk *ch_entry) 1548{ 1549 struct disklabel label; 1550 char *devname; 1551 int error, part; 1552 u_int64_t size; 1553 1554 DNPRINTF(SR_D_META, "%s: sr_meta_native_probe(%s)\n", 1555 DEVNAME(sc), ch_entry->src_devname); 1556 1557 devname = ch_entry->src_devname; 1558 part = DISKPART(ch_entry->src_dev_mm); 1559 1560 /* get disklabel */ 1561 error = VOP_IOCTL(ch_entry->src_vn, DIOCGDINFO, (caddr_t)&label, FREAD, 1562 NOCRED, curproc); 1563 if (error) { 1564 DNPRINTF(SR_D_META, "%s: %s can't obtain disklabel\n", 1565 DEVNAME(sc), devname); 1566 goto unwind; 1567 } 1568 memcpy(ch_entry->src_duid, label.d_uid, sizeof(ch_entry->src_duid)); 1569 1570 /* make sure the partition is of the right type */ 1571 if (label.d_partitions[part].p_fstype != FS_RAID) { 1572 DNPRINTF(SR_D_META, 1573 "%s: %s partition not of type RAID (%d)\n", DEVNAME(sc), 1574 devname, 1575 label.d_partitions[part].p_fstype); 1576 goto unwind; 1577 } 1578 1579 size = DL_SECTOBLK(&label, DL_GETPSIZE(&label.d_partitions[part])); 1580 if (size <= SR_DATA_OFFSET) { 1581 DNPRINTF(SR_D_META, "%s: %s partition too small\n", DEVNAME(sc), 1582 devname); 1583 goto unwind; 1584 } 1585 size -= SR_DATA_OFFSET; 1586 if (size > INT64_MAX) { 1587 DNPRINTF(SR_D_META, "%s: %s partition too large\n", DEVNAME(sc), 1588 devname); 1589 goto unwind; 1590 } 1591 ch_entry->src_size = size; 1592 ch_entry->src_secsize = label.d_secsize; 1593 1594 DNPRINTF(SR_D_META, "%s: probe found %s size %lld\n", DEVNAME(sc), 1595 devname, (long long)size); 1596 1597 return (SR_META_F_NATIVE); 1598unwind: 1599 DNPRINTF(SR_D_META, "%s: invalid device: %s\n", DEVNAME(sc), 1600 devname ? devname : "nodev"); 1601 return (SR_META_F_INVALID); 1602} 1603 1604int 1605sr_meta_native_attach(struct sr_discipline *sd, int force) 1606{ 1607 struct sr_softc *sc = sd->sd_sc; 1608 struct sr_chunk_head *cl = &sd->sd_vol.sv_chunk_list; 1609 struct sr_metadata *md = NULL; 1610 struct sr_chunk *ch_entry, *ch_next; 1611 struct sr_uuid uuid; 1612 u_int64_t version = 0; 1613 int sr, not_sr, rv = 1, d, expected = -1, old_meta = 0; 1614 1615 DNPRINTF(SR_D_META, "%s: sr_meta_native_attach\n", DEVNAME(sc)); 1616 1617 md = malloc(SR_META_SIZE * DEV_BSIZE, M_DEVBUF, M_ZERO | M_NOWAIT); 1618 if (md == NULL) { 1619 sr_error(sc, "not enough memory for metadata buffer"); 1620 goto bad; 1621 } 1622 1623 bzero(&uuid, sizeof uuid); 1624 1625 sr = not_sr = d = 0; 1626 SLIST_FOREACH(ch_entry, cl, src_link) { 1627 if (ch_entry->src_dev_mm == NODEV) 1628 continue; 1629 1630 if (sr_meta_native_read(sd, ch_entry->src_dev_mm, md, NULL)) { 1631 sr_error(sc, "could not read native metadata"); 1632 goto bad; 1633 } 1634 1635 if (md->ssdi.ssd_magic == SR_MAGIC) { 1636 sr++; 1637 ch_entry->src_meta.scmi.scm_chunk_id = 1638 md->ssdi.ssd_chunk_id; 1639 if (d == 0) { 1640 memcpy(&uuid, &md->ssdi.ssd_uuid, sizeof uuid); 1641 expected = md->ssdi.ssd_chunk_no; 1642 version = md->ssd_ondisk; 1643 d++; 1644 continue; 1645 } else if (bcmp(&md->ssdi.ssd_uuid, &uuid, 1646 sizeof uuid)) { 1647 sr_error(sc, "not part of the same volume"); 1648 goto bad; 1649 } 1650 if (md->ssd_ondisk != version) { 1651 old_meta++; 1652 version = MAX(md->ssd_ondisk, version); 1653 } 1654 } else 1655 not_sr++; 1656 } 1657 1658 if (sr && not_sr && !force) { 1659 sr_error(sc, "not all chunks are of the native metadata " 1660 "format"); 1661 goto bad; 1662 } 1663 1664 /* mixed metadata versions; mark bad disks offline */ 1665 if (old_meta) { 1666 d = 0; 1667 for (ch_entry = SLIST_FIRST(cl); ch_entry != NULL; 1668 ch_entry = ch_next, d++) { 1669 ch_next = SLIST_NEXT(ch_entry, src_link); 1670 1671 /* XXX do we want to read this again? */ 1672 if (ch_entry->src_dev_mm == NODEV) 1673 panic("src_dev_mm == NODEV"); 1674 if (sr_meta_native_read(sd, ch_entry->src_dev_mm, md, 1675 NULL)) 1676 sr_warn(sc, "could not read native metadata"); 1677 if (md->ssd_ondisk != version) 1678 sd->sd_vol.sv_chunks[d]->src_meta.scm_status = 1679 BIOC_SDOFFLINE; 1680 } 1681 } 1682 1683 if (expected != sr && !force && expected != -1) { 1684 DNPRINTF(SR_D_META, "%s: not all chunks were provided, trying " 1685 "anyway\n", DEVNAME(sc)); 1686 } 1687 1688 rv = 0; 1689bad: 1690 free(md, M_DEVBUF, SR_META_SIZE * DEV_BSIZE); 1691 return (rv); 1692} 1693 1694int 1695sr_meta_native_read(struct sr_discipline *sd, dev_t dev, 1696 struct sr_metadata *md, void *fm) 1697{ 1698#ifdef SR_DEBUG 1699 struct sr_softc *sc = sd->sd_sc; 1700#endif 1701 DNPRINTF(SR_D_META, "%s: sr_meta_native_read(0x%x, %p)\n", 1702 DEVNAME(sc), dev, md); 1703 1704 return (sr_meta_rw(sd, dev, md, B_READ)); 1705} 1706 1707int 1708sr_meta_native_write(struct sr_discipline *sd, dev_t dev, 1709 struct sr_metadata *md, void *fm) 1710{ 1711#ifdef SR_DEBUG 1712 struct sr_softc *sc = sd->sd_sc; 1713#endif 1714 DNPRINTF(SR_D_META, "%s: sr_meta_native_write(0x%x, %p)\n", 1715 DEVNAME(sc), dev, md); 1716 1717 return (sr_meta_rw(sd, dev, md, B_WRITE)); 1718} 1719 1720void 1721sr_hotplug_register(struct sr_discipline *sd, void *func) 1722{ 1723 struct sr_hotplug_list *mhe; 1724 1725 DNPRINTF(SR_D_MISC, "%s: sr_hotplug_register: %p\n", 1726 DEVNAME(sd->sd_sc), func); 1727 1728 /* make sure we aren't on the list yet */ 1729 SLIST_FOREACH(mhe, &sr_hotplug_callbacks, shl_link) 1730 if (mhe->sh_hotplug == func) 1731 return; 1732 1733 mhe = malloc(sizeof(struct sr_hotplug_list), M_DEVBUF, 1734 M_WAITOK | M_ZERO); 1735 mhe->sh_hotplug = func; 1736 mhe->sh_sd = sd; 1737 SLIST_INSERT_HEAD(&sr_hotplug_callbacks, mhe, shl_link); 1738} 1739 1740void 1741sr_hotplug_unregister(struct sr_discipline *sd, void *func) 1742{ 1743 struct sr_hotplug_list *mhe; 1744 1745 DNPRINTF(SR_D_MISC, "%s: sr_hotplug_unregister: %s %p\n", 1746 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname, func); 1747 1748 /* make sure we are on the list yet */ 1749 SLIST_FOREACH(mhe, &sr_hotplug_callbacks, shl_link) { 1750 if (mhe->sh_hotplug == func) 1751 break; 1752 } 1753 if (mhe != NULL) { 1754 SLIST_REMOVE(&sr_hotplug_callbacks, mhe, 1755 sr_hotplug_list, shl_link); 1756 free(mhe, M_DEVBUF, sizeof(*mhe)); 1757 } 1758} 1759 1760void 1761sr_disk_attach(struct disk *diskp, int action) 1762{ 1763 struct sr_hotplug_list *mhe; 1764 1765 SLIST_FOREACH(mhe, &sr_hotplug_callbacks, shl_link) 1766 if (mhe->sh_sd->sd_ready) 1767 mhe->sh_hotplug(mhe->sh_sd, diskp, action); 1768} 1769 1770int 1771sr_match(struct device *parent, void *match, void *aux) 1772{ 1773 return (1); 1774} 1775 1776void 1777sr_attach(struct device *parent, struct device *self, void *aux) 1778{ 1779 struct sr_softc *sc = (void *)self; 1780 struct scsibus_attach_args saa; 1781 1782 DNPRINTF(SR_D_MISC, "\n%s: sr_attach", DEVNAME(sc)); 1783 1784 if (softraid0 == NULL) 1785 softraid0 = sc; 1786 1787 rw_init(&sc->sc_lock, "sr_lock"); 1788 rw_init(&sc->sc_hs_lock, "sr_hs_lock"); 1789 1790 SLIST_INIT(&sr_hotplug_callbacks); 1791 TAILQ_INIT(&sc->sc_dis_list); 1792 SLIST_INIT(&sc->sc_hotspare_list); 1793 1794#if NBIO > 0 1795 if (bio_register(&sc->sc_dev, sr_bio_ioctl) != 0) 1796 printf("%s: controller registration failed", DEVNAME(sc)); 1797#endif /* NBIO > 0 */ 1798 1799#ifndef SMALL_KERNEL 1800 strlcpy(sc->sc_sensordev.xname, DEVNAME(sc), 1801 sizeof(sc->sc_sensordev.xname)); 1802 sensordev_install(&sc->sc_sensordev); 1803#endif /* SMALL_KERNEL */ 1804 1805 printf("\n"); 1806 1807 saa.saa_adapter_softc = sc; 1808 saa.saa_adapter = &sr_switch; 1809 saa.saa_adapter_target = SDEV_NO_ADAPTER_TARGET; 1810 saa.saa_adapter_buswidth = SR_MAX_LD; 1811 saa.saa_luns = 1; 1812 saa.saa_openings = 0; 1813 saa.saa_pool = NULL; 1814 saa.saa_quirks = saa.saa_flags = 0; 1815 saa.saa_wwpn = saa.saa_wwnn = 0; 1816 1817 sc->sc_scsibus = (struct scsibus_softc *)config_found(&sc->sc_dev, &saa, 1818 scsiprint); 1819 1820 softraid_disk_attach = sr_disk_attach; 1821 1822 sr_boot_assembly(sc); 1823 1824 explicit_bzero(sr_bootkey, sizeof(sr_bootkey)); 1825} 1826 1827int 1828sr_detach(struct device *self, int flags) 1829{ 1830 struct sr_softc *sc = (void *)self; 1831 int rv; 1832 1833 DNPRINTF(SR_D_MISC, "%s: sr_detach\n", DEVNAME(sc)); 1834 1835 softraid_disk_attach = NULL; 1836 1837 sr_shutdown(0); 1838 1839#ifndef SMALL_KERNEL 1840 if (sc->sc_sensor_task != NULL) 1841 sensor_task_unregister(sc->sc_sensor_task); 1842 sensordev_deinstall(&sc->sc_sensordev); 1843#endif /* SMALL_KERNEL */ 1844 1845 if (sc->sc_scsibus != NULL) { 1846 rv = config_detach((struct device *)sc->sc_scsibus, flags); 1847 if (rv != 0) 1848 return (rv); 1849 sc->sc_scsibus = NULL; 1850 } 1851 1852 return (0); 1853} 1854 1855void 1856sr_info(struct sr_softc *sc, const char *fmt, ...) 1857{ 1858 va_list ap; 1859 1860 rw_assert_wrlock(&sc->sc_lock); 1861 1862 va_start(ap, fmt); 1863 bio_status(&sc->sc_status, 0, BIO_MSG_INFO, fmt, &ap); 1864 va_end(ap); 1865} 1866 1867void 1868sr_warn(struct sr_softc *sc, const char *fmt, ...) 1869{ 1870 va_list ap; 1871 1872 rw_assert_wrlock(&sc->sc_lock); 1873 1874 va_start(ap, fmt); 1875 bio_status(&sc->sc_status, 1, BIO_MSG_WARN, fmt, &ap); 1876 va_end(ap); 1877} 1878 1879void 1880sr_error(struct sr_softc *sc, const char *fmt, ...) 1881{ 1882 va_list ap; 1883 1884 rw_assert_wrlock(&sc->sc_lock); 1885 1886 va_start(ap, fmt); 1887 bio_status(&sc->sc_status, 1, BIO_MSG_ERROR, fmt, &ap); 1888 va_end(ap); 1889} 1890 1891int 1892sr_ccb_alloc(struct sr_discipline *sd) 1893{ 1894 struct sr_ccb *ccb; 1895 int i; 1896 1897 if (!sd) 1898 return (1); 1899 1900 DNPRINTF(SR_D_CCB, "%s: sr_ccb_alloc\n", DEVNAME(sd->sd_sc)); 1901 1902 if (sd->sd_ccb) 1903 return (1); 1904 1905 sd->sd_ccb = mallocarray(sd->sd_max_wu, 1906 sd->sd_max_ccb_per_wu * sizeof(struct sr_ccb), 1907 M_DEVBUF, M_WAITOK | M_ZERO); 1908 TAILQ_INIT(&sd->sd_ccb_freeq); 1909 for (i = 0; i < sd->sd_max_wu * sd->sd_max_ccb_per_wu; i++) { 1910 ccb = &sd->sd_ccb[i]; 1911 ccb->ccb_dis = sd; 1912 sr_ccb_put(ccb); 1913 } 1914 1915 DNPRINTF(SR_D_CCB, "%s: sr_ccb_alloc ccb: %d\n", 1916 DEVNAME(sd->sd_sc), sd->sd_max_wu * sd->sd_max_ccb_per_wu); 1917 1918 return (0); 1919} 1920 1921void 1922sr_ccb_free(struct sr_discipline *sd) 1923{ 1924 struct sr_ccb *ccb; 1925 1926 if (!sd) 1927 return; 1928 1929 DNPRINTF(SR_D_CCB, "%s: sr_ccb_free %p\n", DEVNAME(sd->sd_sc), sd); 1930 1931 while ((ccb = TAILQ_FIRST(&sd->sd_ccb_freeq)) != NULL) 1932 TAILQ_REMOVE(&sd->sd_ccb_freeq, ccb, ccb_link); 1933 1934 free(sd->sd_ccb, M_DEVBUF, sd->sd_max_wu * sd->sd_max_ccb_per_wu * 1935 sizeof(struct sr_ccb)); 1936} 1937 1938struct sr_ccb * 1939sr_ccb_get(struct sr_discipline *sd) 1940{ 1941 struct sr_ccb *ccb; 1942 int s; 1943 1944 s = splbio(); 1945 1946 ccb = TAILQ_FIRST(&sd->sd_ccb_freeq); 1947 if (ccb) { 1948 TAILQ_REMOVE(&sd->sd_ccb_freeq, ccb, ccb_link); 1949 ccb->ccb_state = SR_CCB_INPROGRESS; 1950 } 1951 1952 splx(s); 1953 1954 DNPRINTF(SR_D_CCB, "%s: sr_ccb_get: %p\n", DEVNAME(sd->sd_sc), 1955 ccb); 1956 1957 return (ccb); 1958} 1959 1960void 1961sr_ccb_put(struct sr_ccb *ccb) 1962{ 1963 struct sr_discipline *sd = ccb->ccb_dis; 1964 int s; 1965 1966 DNPRINTF(SR_D_CCB, "%s: sr_ccb_put: %p\n", DEVNAME(sd->sd_sc), 1967 ccb); 1968 1969 s = splbio(); 1970 1971 ccb->ccb_wu = NULL; 1972 ccb->ccb_state = SR_CCB_FREE; 1973 ccb->ccb_target = -1; 1974 ccb->ccb_opaque = NULL; 1975 1976 TAILQ_INSERT_TAIL(&sd->sd_ccb_freeq, ccb, ccb_link); 1977 1978 splx(s); 1979} 1980 1981struct sr_ccb * 1982sr_ccb_rw(struct sr_discipline *sd, int chunk, daddr_t blkno, 1983 long len, u_int8_t *data, int xsflags, int ccbflags) 1984{ 1985 struct sr_chunk *sc = sd->sd_vol.sv_chunks[chunk]; 1986 struct sr_ccb *ccb = NULL; 1987 int s; 1988 1989 ccb = sr_ccb_get(sd); 1990 if (ccb == NULL) 1991 goto out; 1992 1993 ccb->ccb_flags = ccbflags; 1994 ccb->ccb_target = chunk; 1995 1996 ccb->ccb_buf.b_flags = B_PHYS | B_CALL; 1997 if (ISSET(xsflags, SCSI_DATA_IN)) 1998 ccb->ccb_buf.b_flags |= B_READ; 1999 else 2000 ccb->ccb_buf.b_flags |= B_WRITE; 2001 2002 ccb->ccb_buf.b_blkno = blkno + sd->sd_meta->ssd_data_blkno; 2003 ccb->ccb_buf.b_bcount = len; 2004 ccb->ccb_buf.b_bufsize = len; 2005 ccb->ccb_buf.b_resid = len; 2006 ccb->ccb_buf.b_data = data; 2007 ccb->ccb_buf.b_error = 0; 2008 ccb->ccb_buf.b_iodone = sd->sd_scsi_intr; 2009 ccb->ccb_buf.b_proc = curproc; 2010 ccb->ccb_buf.b_dev = sc->src_dev_mm; 2011 ccb->ccb_buf.b_vp = sc->src_vn; 2012 ccb->ccb_buf.b_bq = NULL; 2013 2014 if (!ISSET(ccb->ccb_buf.b_flags, B_READ)) { 2015 s = splbio(); 2016 ccb->ccb_buf.b_vp->v_numoutput++; 2017 splx(s); 2018 } 2019 2020 DNPRINTF(SR_D_DIS, "%s: %s %s ccb " 2021 "b_bcount %ld b_blkno %lld b_flags 0x%0lx b_data %p\n", 2022 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname, sd->sd_name, 2023 ccb->ccb_buf.b_bcount, (long long)ccb->ccb_buf.b_blkno, 2024 ccb->ccb_buf.b_flags, ccb->ccb_buf.b_data); 2025 2026out: 2027 return ccb; 2028} 2029 2030void 2031sr_ccb_done(struct sr_ccb *ccb) 2032{ 2033 struct sr_workunit *wu = ccb->ccb_wu; 2034 struct sr_discipline *sd = wu->swu_dis; 2035 struct sr_softc *sc = sd->sd_sc; 2036 2037 DNPRINTF(SR_D_INTR, "%s: %s %s ccb done b_bcount %ld b_resid %zu" 2038 " b_flags 0x%0lx block %lld target %d\n", 2039 DEVNAME(sc), sd->sd_meta->ssd_devname, sd->sd_name, 2040 ccb->ccb_buf.b_bcount, ccb->ccb_buf.b_resid, ccb->ccb_buf.b_flags, 2041 (long long)ccb->ccb_buf.b_blkno, ccb->ccb_target); 2042 2043 splassert(IPL_BIO); 2044 2045 if (ccb->ccb_target == -1) 2046 panic("%s: invalid target on wu: %p", DEVNAME(sc), wu); 2047 2048 if (ccb->ccb_buf.b_flags & B_ERROR) { 2049 DNPRINTF(SR_D_INTR, "%s: i/o error on block %lld target %d\n", 2050 DEVNAME(sc), (long long)ccb->ccb_buf.b_blkno, 2051 ccb->ccb_target); 2052 if (ISSET(sd->sd_capabilities, SR_CAP_REDUNDANT)) 2053 sd->sd_set_chunk_state(sd, ccb->ccb_target, 2054 BIOC_SDOFFLINE); 2055 else 2056 printf("%s: %s: i/o error %d @ %s block %lld\n", 2057 DEVNAME(sc), sd->sd_meta->ssd_devname, 2058 ccb->ccb_buf.b_error, sd->sd_name, 2059 (long long)ccb->ccb_buf.b_blkno); 2060 ccb->ccb_state = SR_CCB_FAILED; 2061 wu->swu_ios_failed++; 2062 } else { 2063 ccb->ccb_state = SR_CCB_OK; 2064 wu->swu_ios_succeeded++; 2065 } 2066 2067 wu->swu_ios_complete++; 2068} 2069 2070int 2071sr_wu_alloc(struct sr_discipline *sd) 2072{ 2073 struct sr_workunit *wu; 2074 int i, no_wu; 2075 2076 DNPRINTF(SR_D_WU, "%s: sr_wu_alloc %p %d\n", DEVNAME(sd->sd_sc), 2077 sd, sd->sd_max_wu); 2078 2079 no_wu = sd->sd_max_wu; 2080 sd->sd_wu_pending = no_wu; 2081 2082 mtx_init(&sd->sd_wu_mtx, IPL_BIO); 2083 TAILQ_INIT(&sd->sd_wu); 2084 TAILQ_INIT(&sd->sd_wu_freeq); 2085 TAILQ_INIT(&sd->sd_wu_pendq); 2086 TAILQ_INIT(&sd->sd_wu_defq); 2087 2088 for (i = 0; i < no_wu; i++) { 2089 wu = malloc(sd->sd_wu_size, M_DEVBUF, M_WAITOK | M_ZERO); 2090 TAILQ_INSERT_TAIL(&sd->sd_wu, wu, swu_next); 2091 TAILQ_INIT(&wu->swu_ccb); 2092 wu->swu_dis = sd; 2093 task_set(&wu->swu_task, sr_wu_done_callback, wu); 2094 sr_wu_put(sd, wu); 2095 } 2096 2097 return (0); 2098} 2099 2100void 2101sr_wu_free(struct sr_discipline *sd) 2102{ 2103 struct sr_workunit *wu; 2104 2105 DNPRINTF(SR_D_WU, "%s: sr_wu_free %p\n", DEVNAME(sd->sd_sc), sd); 2106 2107 while ((wu = TAILQ_FIRST(&sd->sd_wu_freeq)) != NULL) 2108 TAILQ_REMOVE(&sd->sd_wu_freeq, wu, swu_link); 2109 while ((wu = TAILQ_FIRST(&sd->sd_wu_pendq)) != NULL) 2110 TAILQ_REMOVE(&sd->sd_wu_pendq, wu, swu_link); 2111 while ((wu = TAILQ_FIRST(&sd->sd_wu_defq)) != NULL) 2112 TAILQ_REMOVE(&sd->sd_wu_defq, wu, swu_link); 2113 2114 while ((wu = TAILQ_FIRST(&sd->sd_wu)) != NULL) { 2115 TAILQ_REMOVE(&sd->sd_wu, wu, swu_next); 2116 free(wu, M_DEVBUF, sd->sd_wu_size); 2117 } 2118} 2119 2120void * 2121sr_wu_get(void *xsd) 2122{ 2123 struct sr_discipline *sd = (struct sr_discipline *)xsd; 2124 struct sr_workunit *wu; 2125 2126 mtx_enter(&sd->sd_wu_mtx); 2127 wu = TAILQ_FIRST(&sd->sd_wu_freeq); 2128 if (wu) { 2129 TAILQ_REMOVE(&sd->sd_wu_freeq, wu, swu_link); 2130 sd->sd_wu_pending++; 2131 } 2132 mtx_leave(&sd->sd_wu_mtx); 2133 2134 DNPRINTF(SR_D_WU, "%s: sr_wu_get: %p\n", DEVNAME(sd->sd_sc), wu); 2135 2136 return (wu); 2137} 2138 2139void 2140sr_wu_put(void *xsd, void *xwu) 2141{ 2142 struct sr_discipline *sd = (struct sr_discipline *)xsd; 2143 struct sr_workunit *wu = (struct sr_workunit *)xwu; 2144 2145 DNPRINTF(SR_D_WU, "%s: sr_wu_put: %p\n", DEVNAME(sd->sd_sc), wu); 2146 2147 sr_wu_release_ccbs(wu); 2148 sr_wu_init(sd, wu); 2149 2150 mtx_enter(&sd->sd_wu_mtx); 2151 TAILQ_INSERT_TAIL(&sd->sd_wu_freeq, wu, swu_link); 2152 sd->sd_wu_pending--; 2153 mtx_leave(&sd->sd_wu_mtx); 2154} 2155 2156void 2157sr_wu_init(struct sr_discipline *sd, struct sr_workunit *wu) 2158{ 2159 int s; 2160 2161 s = splbio(); 2162 if (wu->swu_cb_active == 1) 2163 panic("%s: sr_wu_init got active wu", DEVNAME(sd->sd_sc)); 2164 splx(s); 2165 2166 wu->swu_xs = NULL; 2167 wu->swu_state = SR_WU_FREE; 2168 wu->swu_flags = 0; 2169 wu->swu_blk_start = 0; 2170 wu->swu_blk_end = 0; 2171 wu->swu_collider = NULL; 2172} 2173 2174void 2175sr_wu_enqueue_ccb(struct sr_workunit *wu, struct sr_ccb *ccb) 2176{ 2177 struct sr_discipline *sd = wu->swu_dis; 2178 int s; 2179 2180 s = splbio(); 2181 if (wu->swu_cb_active == 1) 2182 panic("%s: sr_wu_enqueue_ccb got active wu", 2183 DEVNAME(sd->sd_sc)); 2184 ccb->ccb_wu = wu; 2185 wu->swu_io_count++; 2186 TAILQ_INSERT_TAIL(&wu->swu_ccb, ccb, ccb_link); 2187 splx(s); 2188} 2189 2190void 2191sr_wu_release_ccbs(struct sr_workunit *wu) 2192{ 2193 struct sr_ccb *ccb; 2194 2195 /* Return all ccbs that are associated with this workunit. */ 2196 while ((ccb = TAILQ_FIRST(&wu->swu_ccb)) != NULL) { 2197 TAILQ_REMOVE(&wu->swu_ccb, ccb, ccb_link); 2198 sr_ccb_put(ccb); 2199 } 2200 2201 wu->swu_io_count = 0; 2202 wu->swu_ios_complete = 0; 2203 wu->swu_ios_failed = 0; 2204 wu->swu_ios_succeeded = 0; 2205} 2206 2207void 2208sr_wu_done(struct sr_workunit *wu) 2209{ 2210 struct sr_discipline *sd = wu->swu_dis; 2211 2212 DNPRINTF(SR_D_INTR, "%s: sr_wu_done count %d completed %d failed %d\n", 2213 DEVNAME(sd->sd_sc), wu->swu_io_count, wu->swu_ios_complete, 2214 wu->swu_ios_failed); 2215 2216 if (wu->swu_ios_complete < wu->swu_io_count) 2217 return; 2218 2219 task_add(sd->sd_taskq, &wu->swu_task); 2220} 2221 2222void 2223sr_wu_done_callback(void *xwu) 2224{ 2225 struct sr_workunit *wu = xwu; 2226 struct sr_discipline *sd = wu->swu_dis; 2227 struct scsi_xfer *xs = wu->swu_xs; 2228 struct sr_workunit *wup; 2229 int s; 2230 2231 /* 2232 * The SR_WUF_DISCIPLINE or SR_WUF_REBUILD flag must be set if 2233 * the work unit is not associated with a scsi_xfer. 2234 */ 2235 KASSERT(xs != NULL || 2236 (wu->swu_flags & (SR_WUF_DISCIPLINE|SR_WUF_REBUILD))); 2237 2238 s = splbio(); 2239 2240 if (xs != NULL) { 2241 if (wu->swu_ios_failed) 2242 xs->error = XS_DRIVER_STUFFUP; 2243 else 2244 xs->error = XS_NOERROR; 2245 } 2246 2247 if (sd->sd_scsi_wu_done) { 2248 if (sd->sd_scsi_wu_done(wu) == SR_WU_RESTART) 2249 goto done; 2250 } 2251 2252 /* Remove work unit from pending queue. */ 2253 TAILQ_FOREACH(wup, &sd->sd_wu_pendq, swu_link) 2254 if (wup == wu) 2255 break; 2256 if (wup == NULL) 2257 panic("%s: wu %p not on pending queue", 2258 DEVNAME(sd->sd_sc), wu); 2259 TAILQ_REMOVE(&sd->sd_wu_pendq, wu, swu_link); 2260 2261 if (wu->swu_collider) { 2262 if (wu->swu_ios_failed) 2263 sr_raid_recreate_wu(wu->swu_collider); 2264 2265 /* XXX Should the collider be failed if this xs failed? */ 2266 sr_raid_startwu(wu->swu_collider); 2267 } 2268 2269 /* 2270 * If a discipline provides its own sd_scsi_done function, then it 2271 * is responsible for calling sr_scsi_done() once I/O is complete. 2272 */ 2273 if (wu->swu_flags & SR_WUF_REBUILD) 2274 wu->swu_flags |= SR_WUF_REBUILDIOCOMP; 2275 if (wu->swu_flags & SR_WUF_WAKEUP) 2276 wakeup(wu); 2277 if (sd->sd_scsi_done) 2278 sd->sd_scsi_done(wu); 2279 else if (wu->swu_flags & SR_WUF_DISCIPLINE) 2280 sr_scsi_wu_put(sd, wu); 2281 else if (!(wu->swu_flags & SR_WUF_REBUILD)) 2282 sr_scsi_done(sd, xs); 2283 2284done: 2285 splx(s); 2286} 2287 2288struct sr_workunit * 2289sr_scsi_wu_get(struct sr_discipline *sd, int flags) 2290{ 2291 return scsi_io_get(&sd->sd_iopool, flags); 2292} 2293 2294void 2295sr_scsi_wu_put(struct sr_discipline *sd, struct sr_workunit *wu) 2296{ 2297 scsi_io_put(&sd->sd_iopool, wu); 2298 2299 if (sd->sd_sync && sd->sd_wu_pending == 0) 2300 wakeup(sd); 2301} 2302 2303void 2304sr_scsi_done(struct sr_discipline *sd, struct scsi_xfer *xs) 2305{ 2306 DNPRINTF(SR_D_DIS, "%s: sr_scsi_done: xs %p\n", DEVNAME(sd->sd_sc), xs); 2307 2308 if (xs->error == XS_NOERROR) 2309 xs->resid = 0; 2310 2311 scsi_done(xs); 2312 2313 if (sd->sd_sync && sd->sd_wu_pending == 0) 2314 wakeup(sd); 2315} 2316 2317void 2318sr_scsi_cmd(struct scsi_xfer *xs) 2319{ 2320 struct scsi_link *link = xs->sc_link; 2321 struct sr_softc *sc = link->bus->sb_adapter_softc; 2322 struct sr_workunit *wu = xs->io; 2323 struct sr_discipline *sd; 2324 2325 DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd target %d xs %p flags %#x\n", 2326 DEVNAME(sc), link->target, xs, xs->flags); 2327 2328 sd = sc->sc_targets[link->target]; 2329 if (sd == NULL) 2330 panic("%s: sr_scsi_cmd NULL discipline", DEVNAME(sc)); 2331 2332 if (sd->sd_deleted) { 2333 printf("%s: %s device is being deleted, failing io\n", 2334 DEVNAME(sc), sd->sd_meta->ssd_devname); 2335 goto stuffup; 2336 } 2337 2338 /* scsi layer *can* re-send wu without calling sr_wu_put(). */ 2339 sr_wu_release_ccbs(wu); 2340 sr_wu_init(sd, wu); 2341 wu->swu_state = SR_WU_INPROGRESS; 2342 wu->swu_xs = xs; 2343 2344 switch (xs->cmd.opcode) { 2345 case READ_COMMAND: 2346 case READ_10: 2347 case READ_16: 2348 case WRITE_COMMAND: 2349 case WRITE_10: 2350 case WRITE_16: 2351 DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: READ/WRITE %02x\n", 2352 DEVNAME(sc), xs->cmd.opcode); 2353 if (sd->sd_scsi_rw(wu)) 2354 goto stuffup; 2355 break; 2356 2357 case SYNCHRONIZE_CACHE: 2358 DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: SYNCHRONIZE_CACHE\n", 2359 DEVNAME(sc)); 2360 if (sd->sd_scsi_sync(wu)) 2361 goto stuffup; 2362 goto complete; 2363 2364 case TEST_UNIT_READY: 2365 DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: TEST_UNIT_READY\n", 2366 DEVNAME(sc)); 2367 if (sd->sd_scsi_tur(wu)) 2368 goto stuffup; 2369 goto complete; 2370 2371 case START_STOP: 2372 DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: START_STOP\n", 2373 DEVNAME(sc)); 2374 if (sd->sd_scsi_start_stop(wu)) 2375 goto stuffup; 2376 goto complete; 2377 2378 case INQUIRY: 2379 DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: INQUIRY\n", 2380 DEVNAME(sc)); 2381 if (sd->sd_scsi_inquiry(wu)) 2382 goto stuffup; 2383 goto complete; 2384 2385 case READ_CAPACITY: 2386 case READ_CAPACITY_16: 2387 DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd READ CAPACITY 0x%02x\n", 2388 DEVNAME(sc), xs->cmd.opcode); 2389 if (sd->sd_scsi_read_cap(wu)) 2390 goto stuffup; 2391 goto complete; 2392 2393 case REQUEST_SENSE: 2394 DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd REQUEST SENSE\n", 2395 DEVNAME(sc)); 2396 if (sd->sd_scsi_req_sense(wu)) 2397 goto stuffup; 2398 goto complete; 2399 2400 default: 2401 DNPRINTF(SR_D_CMD, "%s: unsupported scsi command %x\n", 2402 DEVNAME(sc), xs->cmd.opcode); 2403 /* XXX might need to add generic function to handle others */ 2404 goto stuffup; 2405 } 2406 2407 return; 2408stuffup: 2409 if (sd->sd_scsi_sense.error_code) { 2410 xs->error = XS_SENSE; 2411 memcpy(&xs->sense, &sd->sd_scsi_sense, sizeof(xs->sense)); 2412 bzero(&sd->sd_scsi_sense, sizeof(sd->sd_scsi_sense)); 2413 } else { 2414 xs->error = XS_DRIVER_STUFFUP; 2415 } 2416complete: 2417 sr_scsi_done(sd, xs); 2418} 2419 2420int 2421sr_scsi_probe(struct scsi_link *link) 2422{ 2423 struct sr_softc *sc = link->bus->sb_adapter_softc; 2424 struct sr_discipline *sd; 2425 2426 KASSERT(link->target < SR_MAX_LD && link->lun == 0); 2427 2428 sd = sc->sc_targets[link->target]; 2429 if (sd == NULL) 2430 return (ENODEV); 2431 2432 link->pool = &sd->sd_iopool; 2433 if (sd->sd_openings) 2434 link->openings = sd->sd_openings(sd); 2435 else 2436 link->openings = sd->sd_max_wu; 2437 2438 return (0); 2439} 2440 2441int 2442sr_scsi_ioctl(struct scsi_link *link, u_long cmd, caddr_t addr, int flag) 2443{ 2444 struct sr_softc *sc = link->bus->sb_adapter_softc; 2445 struct sr_discipline *sd; 2446 2447 sd = sc->sc_targets[link->target]; 2448 if (sd == NULL) 2449 return (ENODEV); 2450 2451 DNPRINTF(SR_D_IOCTL, "%s: %s sr_scsi_ioctl cmd: %#lx\n", 2452 DEVNAME(sc), sd->sd_meta->ssd_devname, cmd); 2453 2454 /* Pass bio ioctls through to the bio handler. */ 2455 if (IOCGROUP(cmd) == 'B') 2456 return (sr_bio_handler(sc, sd, cmd, (struct bio *)addr)); 2457 2458 switch (cmd) { 2459 case DIOCGCACHE: 2460 case DIOCSCACHE: 2461 return (EOPNOTSUPP); 2462 default: 2463 return (ENOTTY); 2464 } 2465} 2466 2467int 2468sr_bio_ioctl(struct device *dev, u_long cmd, caddr_t addr) 2469{ 2470 struct sr_softc *sc = (struct sr_softc *) dev; 2471 DNPRINTF(SR_D_IOCTL, "%s: sr_bio_ioctl\n", DEVNAME(sc)); 2472 2473 return sr_bio_handler(sc, NULL, cmd, (struct bio *)addr); 2474} 2475 2476int 2477sr_bio_handler(struct sr_softc *sc, struct sr_discipline *sd, u_long cmd, 2478 struct bio *bio) 2479{ 2480 int rv = 0; 2481 2482 DNPRINTF(SR_D_IOCTL, "%s: sr_bio_handler ", DEVNAME(sc)); 2483 2484 rw_enter_write(&sc->sc_lock); 2485 2486 bio_status_init(&sc->sc_status, &sc->sc_dev); 2487 2488 switch (cmd) { 2489 case BIOCINQ: 2490 DNPRINTF(SR_D_IOCTL, "inq\n"); 2491 rv = sr_ioctl_inq(sc, (struct bioc_inq *)bio); 2492 break; 2493 2494 case BIOCVOL: 2495 DNPRINTF(SR_D_IOCTL, "vol\n"); 2496 rv = sr_ioctl_vol(sc, (struct bioc_vol *)bio); 2497 break; 2498 2499 case BIOCDISK: 2500 DNPRINTF(SR_D_IOCTL, "disk\n"); 2501 rv = sr_ioctl_disk(sc, (struct bioc_disk *)bio); 2502 break; 2503 2504 case BIOCALARM: 2505 DNPRINTF(SR_D_IOCTL, "alarm\n"); 2506 /*rv = sr_ioctl_alarm(sc, (struct bioc_alarm *)bio); */ 2507 break; 2508 2509 case BIOCBLINK: 2510 DNPRINTF(SR_D_IOCTL, "blink\n"); 2511 /*rv = sr_ioctl_blink(sc, (struct bioc_blink *)bio); */ 2512 break; 2513 2514 case BIOCSETSTATE: 2515 DNPRINTF(SR_D_IOCTL, "setstate\n"); 2516 rv = sr_ioctl_setstate(sc, (struct bioc_setstate *)bio); 2517 break; 2518 2519 case BIOCCREATERAID: 2520 DNPRINTF(SR_D_IOCTL, "createraid\n"); 2521 rv = sr_ioctl_createraid(sc, (struct bioc_createraid *)bio, 2522 1, NULL); 2523 break; 2524 2525 case BIOCDELETERAID: 2526 DNPRINTF(SR_D_IOCTL, "deleteraid\n"); 2527 rv = sr_ioctl_deleteraid(sc, sd, (struct bioc_deleteraid *)bio); 2528 break; 2529 2530 case BIOCDISCIPLINE: 2531 DNPRINTF(SR_D_IOCTL, "discipline\n"); 2532 rv = sr_ioctl_discipline(sc, sd, (struct bioc_discipline *)bio); 2533 break; 2534 2535 case BIOCINSTALLBOOT: 2536 DNPRINTF(SR_D_IOCTL, "installboot\n"); 2537 rv = sr_ioctl_installboot(sc, sd, 2538 (struct bioc_installboot *)bio); 2539 break; 2540 2541 default: 2542 DNPRINTF(SR_D_IOCTL, "invalid ioctl\n"); 2543 rv = ENOTTY; 2544 } 2545 2546 sc->sc_status.bs_status = (rv ? BIO_STATUS_ERROR : BIO_STATUS_SUCCESS); 2547 2548 if (sc->sc_status.bs_msg_count > 0) 2549 rv = 0; 2550 2551 memcpy(&bio->bio_status, &sc->sc_status, sizeof(struct bio_status)); 2552 2553 rw_exit_write(&sc->sc_lock); 2554 2555 return (rv); 2556} 2557 2558int 2559sr_ioctl_inq(struct sr_softc *sc, struct bioc_inq *bi) 2560{ 2561 struct sr_discipline *sd; 2562 int vol = 0, disk = 0; 2563 2564 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) { 2565 vol++; 2566 disk += sd->sd_meta->ssdi.ssd_chunk_no; 2567 } 2568 2569 strlcpy(bi->bi_dev, sc->sc_dev.dv_xname, sizeof(bi->bi_dev)); 2570 bi->bi_novol = vol + sc->sc_hotspare_no; 2571 bi->bi_nodisk = disk + sc->sc_hotspare_no; 2572 2573 return (0); 2574} 2575 2576int 2577sr_ioctl_vol(struct sr_softc *sc, struct bioc_vol *bv) 2578{ 2579 int vol = -1, rv = EINVAL; 2580 struct sr_discipline *sd; 2581 struct sr_chunk *hotspare; 2582 2583 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) { 2584 vol++; 2585 if (vol != bv->bv_volid) 2586 continue; 2587 2588 bv->bv_status = sd->sd_vol_status; 2589 bv->bv_size = sd->sd_meta->ssdi.ssd_size << DEV_BSHIFT; 2590 bv->bv_level = sd->sd_meta->ssdi.ssd_level; 2591 bv->bv_nodisk = sd->sd_meta->ssdi.ssd_chunk_no; 2592 2593#ifdef CRYPTO 2594 if (sd->sd_meta->ssdi.ssd_level == 'C' && 2595 sd->mds.mdd_crypto.key_disk != NULL) 2596 bv->bv_nodisk++; 2597 else if (sd->sd_meta->ssdi.ssd_level == 0x1C && 2598 sd->mds.mdd_raid1c.sr1c_crypto.key_disk != NULL) 2599 bv->bv_nodisk++; 2600#endif 2601 if (bv->bv_status == BIOC_SVREBUILD) 2602 bv->bv_percent = sr_rebuild_percent(sd); 2603 2604 strlcpy(bv->bv_dev, sd->sd_meta->ssd_devname, 2605 sizeof(bv->bv_dev)); 2606 strlcpy(bv->bv_vendor, sd->sd_meta->ssdi.ssd_vendor, 2607 sizeof(bv->bv_vendor)); 2608 rv = 0; 2609 goto done; 2610 } 2611 2612 /* Check hotspares list. */ 2613 SLIST_FOREACH(hotspare, &sc->sc_hotspare_list, src_link) { 2614 vol++; 2615 if (vol != bv->bv_volid) 2616 continue; 2617 2618 bv->bv_status = BIOC_SVONLINE; 2619 bv->bv_size = hotspare->src_meta.scmi.scm_size << DEV_BSHIFT; 2620 bv->bv_level = -1; /* Hotspare. */ 2621 bv->bv_nodisk = 1; 2622 strlcpy(bv->bv_dev, hotspare->src_meta.scmi.scm_devname, 2623 sizeof(bv->bv_dev)); 2624 strlcpy(bv->bv_vendor, hotspare->src_meta.scmi.scm_devname, 2625 sizeof(bv->bv_vendor)); 2626 rv = 0; 2627 goto done; 2628 } 2629 2630done: 2631 return (rv); 2632} 2633 2634int 2635sr_ioctl_disk(struct sr_softc *sc, struct bioc_disk *bd) 2636{ 2637 struct sr_discipline *sd; 2638 struct sr_chunk *src, *hotspare; 2639 int vol = -1, rv = EINVAL; 2640 2641 if (bd->bd_diskid < 0) 2642 goto done; 2643 2644 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) { 2645 vol++; 2646 if (vol != bd->bd_volid) 2647 continue; 2648 2649 if (bd->bd_diskid < sd->sd_meta->ssdi.ssd_chunk_no) 2650 src = sd->sd_vol.sv_chunks[bd->bd_diskid]; 2651#ifdef CRYPTO 2652 else if (bd->bd_diskid == sd->sd_meta->ssdi.ssd_chunk_no && 2653 sd->sd_meta->ssdi.ssd_level == 'C' && 2654 sd->mds.mdd_crypto.key_disk != NULL) 2655 src = sd->mds.mdd_crypto.key_disk; 2656 else if (bd->bd_diskid == sd->sd_meta->ssdi.ssd_chunk_no && 2657 sd->sd_meta->ssdi.ssd_level == 0x1C && 2658 sd->mds.mdd_raid1c.sr1c_crypto.key_disk != NULL) 2659 src = sd->mds.mdd_crypto.key_disk; 2660#endif 2661 else 2662 break; 2663 2664 bd->bd_status = src->src_meta.scm_status; 2665 bd->bd_size = src->src_meta.scmi.scm_size << DEV_BSHIFT; 2666 bd->bd_channel = vol; 2667 bd->bd_target = bd->bd_diskid; 2668 strlcpy(bd->bd_vendor, src->src_meta.scmi.scm_devname, 2669 sizeof(bd->bd_vendor)); 2670 rv = 0; 2671 goto done; 2672 } 2673 2674 /* Check hotspares list. */ 2675 SLIST_FOREACH(hotspare, &sc->sc_hotspare_list, src_link) { 2676 vol++; 2677 if (vol != bd->bd_volid) 2678 continue; 2679 2680 if (bd->bd_diskid != 0) 2681 break; 2682 2683 bd->bd_status = hotspare->src_meta.scm_status; 2684 bd->bd_size = hotspare->src_meta.scmi.scm_size << DEV_BSHIFT; 2685 bd->bd_channel = vol; 2686 bd->bd_target = bd->bd_diskid; 2687 strlcpy(bd->bd_vendor, hotspare->src_meta.scmi.scm_devname, 2688 sizeof(bd->bd_vendor)); 2689 rv = 0; 2690 goto done; 2691 } 2692 2693done: 2694 return (rv); 2695} 2696 2697int 2698sr_ioctl_setstate(struct sr_softc *sc, struct bioc_setstate *bs) 2699{ 2700 int rv = EINVAL; 2701 int vol = -1, found, c; 2702 struct sr_discipline *sd; 2703 struct sr_chunk *ch_entry; 2704 struct sr_chunk_head *cl; 2705 2706 if (bs->bs_other_id_type == BIOC_SSOTHER_UNUSED) 2707 goto done; 2708 2709 if (bs->bs_status == BIOC_SSHOTSPARE) { 2710 rv = sr_hotspare(sc, (dev_t)bs->bs_other_id); 2711 goto done; 2712 } 2713 2714 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) { 2715 vol++; 2716 if (vol == bs->bs_volid) 2717 break; 2718 } 2719 if (sd == NULL) 2720 goto done; 2721 2722 switch (bs->bs_status) { 2723 case BIOC_SSOFFLINE: 2724 /* Take chunk offline */ 2725 found = c = 0; 2726 cl = &sd->sd_vol.sv_chunk_list; 2727 SLIST_FOREACH(ch_entry, cl, src_link) { 2728 if (ch_entry->src_dev_mm == bs->bs_other_id) { 2729 found = 1; 2730 break; 2731 } 2732 c++; 2733 } 2734 if (found == 0) { 2735 sr_error(sc, "chunk not part of array"); 2736 goto done; 2737 } 2738 2739 /* XXX: check current state first */ 2740 sd->sd_set_chunk_state(sd, c, BIOC_SDOFFLINE); 2741 2742 if (sr_meta_save(sd, SR_META_DIRTY)) { 2743 sr_error(sc, "could not save metadata for %s", 2744 sd->sd_meta->ssd_devname); 2745 goto done; 2746 } 2747 rv = 0; 2748 break; 2749 2750 case BIOC_SDSCRUB: 2751 break; 2752 2753 case BIOC_SSREBUILD: 2754 rv = sr_rebuild_init(sd, (dev_t)bs->bs_other_id, 0); 2755 break; 2756 2757 default: 2758 sr_error(sc, "unsupported state request %d", bs->bs_status); 2759 } 2760 2761done: 2762 return (rv); 2763} 2764 2765int 2766sr_chunk_in_use(struct sr_softc *sc, dev_t dev) 2767{ 2768 struct sr_discipline *sd; 2769 struct sr_chunk *chunk; 2770 int i; 2771 2772 DNPRINTF(SR_D_MISC, "%s: sr_chunk_in_use(%d)\n", DEVNAME(sc), dev); 2773 2774 if (dev == NODEV) 2775 return BIOC_SDINVALID; 2776 2777 /* See if chunk is already in use. */ 2778 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) { 2779 for (i = 0; i < sd->sd_meta->ssdi.ssd_chunk_no; i++) { 2780 chunk = sd->sd_vol.sv_chunks[i]; 2781 if (chunk->src_dev_mm == dev) 2782 return chunk->src_meta.scm_status; 2783 } 2784 } 2785 2786 /* Check hotspares list. */ 2787 SLIST_FOREACH(chunk, &sc->sc_hotspare_list, src_link) 2788 if (chunk->src_dev_mm == dev) 2789 return chunk->src_meta.scm_status; 2790 2791 return BIOC_SDINVALID; 2792} 2793 2794int 2795sr_hotspare(struct sr_softc *sc, dev_t dev) 2796{ 2797 struct sr_discipline *sd = NULL; 2798 struct sr_metadata *sm = NULL; 2799 struct sr_meta_chunk *hm; 2800 struct sr_chunk_head *cl; 2801 struct sr_chunk *chunk, *last, *hotspare = NULL; 2802 struct sr_uuid uuid; 2803 struct disklabel label; 2804 struct vnode *vn; 2805 u_int64_t size; 2806 char devname[32]; 2807 int rv = EINVAL; 2808 int c, part, open = 0; 2809 2810 /* 2811 * Add device to global hotspares list. 2812 */ 2813 2814 sr_meta_getdevname(sc, dev, devname, sizeof(devname)); 2815 2816 /* Make sure chunk is not already in use. */ 2817 c = sr_chunk_in_use(sc, dev); 2818 if (c != BIOC_SDINVALID && c != BIOC_SDOFFLINE) { 2819 if (c == BIOC_SDHOTSPARE) 2820 sr_error(sc, "%s is already a hotspare", devname); 2821 else 2822 sr_error(sc, "%s is already in use", devname); 2823 goto done; 2824 } 2825 2826 /* XXX - See if there is an existing degraded volume... */ 2827 2828 /* Open device. */ 2829 if (bdevvp(dev, &vn)) { 2830 sr_error(sc, "sr_hotspare: cannot allocate vnode"); 2831 goto done; 2832 } 2833 if (VOP_OPEN(vn, FREAD | FWRITE, NOCRED, curproc)) { 2834 DNPRINTF(SR_D_META,"%s: sr_hotspare cannot open %s\n", 2835 DEVNAME(sc), devname); 2836 vput(vn); 2837 goto fail; 2838 } 2839 open = 1; /* close dev on error */ 2840 2841 /* Get partition details. */ 2842 part = DISKPART(dev); 2843 if (VOP_IOCTL(vn, DIOCGDINFO, (caddr_t)&label, FREAD, 2844 NOCRED, curproc)) { 2845 DNPRINTF(SR_D_META, "%s: sr_hotspare ioctl failed\n", 2846 DEVNAME(sc)); 2847 goto fail; 2848 } 2849 if (label.d_partitions[part].p_fstype != FS_RAID) { 2850 sr_error(sc, "%s partition not of type RAID (%d)", 2851 devname, label.d_partitions[part].p_fstype); 2852 goto fail; 2853 } 2854 2855 /* Calculate partition size. */ 2856 size = DL_SECTOBLK(&label, DL_GETPSIZE(&label.d_partitions[part])); 2857 if (size <= SR_DATA_OFFSET) { 2858 DNPRINTF(SR_D_META, "%s: %s partition too small\n", DEVNAME(sc), 2859 devname); 2860 goto fail; 2861 } 2862 size -= SR_DATA_OFFSET; 2863 if (size > INT64_MAX) { 2864 DNPRINTF(SR_D_META, "%s: %s partition too large\n", DEVNAME(sc), 2865 devname); 2866 goto fail; 2867 } 2868 2869 /* 2870 * Create and populate chunk metadata. 2871 */ 2872 2873 sr_uuid_generate(&uuid); 2874 hotspare = malloc(sizeof(struct sr_chunk), M_DEVBUF, M_WAITOK | M_ZERO); 2875 2876 hotspare->src_dev_mm = dev; 2877 hotspare->src_vn = vn; 2878 strlcpy(hotspare->src_devname, devname, sizeof(hm->scmi.scm_devname)); 2879 hotspare->src_size = size; 2880 2881 hm = &hotspare->src_meta; 2882 hm->scmi.scm_volid = SR_HOTSPARE_VOLID; 2883 hm->scmi.scm_chunk_id = 0; 2884 hm->scmi.scm_size = size; 2885 hm->scmi.scm_coerced_size = size; 2886 strlcpy(hm->scmi.scm_devname, devname, sizeof(hm->scmi.scm_devname)); 2887 memcpy(&hm->scmi.scm_uuid, &uuid, sizeof(struct sr_uuid)); 2888 2889 sr_checksum(sc, hm, &hm->scm_checksum, 2890 sizeof(struct sr_meta_chunk_invariant)); 2891 2892 hm->scm_status = BIOC_SDHOTSPARE; 2893 2894 /* 2895 * Create and populate our own discipline and metadata. 2896 */ 2897 2898 sm = malloc(sizeof(struct sr_metadata), M_DEVBUF, M_WAITOK | M_ZERO); 2899 sm->ssdi.ssd_magic = SR_MAGIC; 2900 sm->ssdi.ssd_version = SR_META_VERSION; 2901 sm->ssd_ondisk = 0; 2902 sm->ssdi.ssd_vol_flags = 0; 2903 memcpy(&sm->ssdi.ssd_uuid, &uuid, sizeof(struct sr_uuid)); 2904 sm->ssdi.ssd_chunk_no = 1; 2905 sm->ssdi.ssd_volid = SR_HOTSPARE_VOLID; 2906 sm->ssdi.ssd_level = SR_HOTSPARE_LEVEL; 2907 sm->ssdi.ssd_size = size; 2908 sm->ssdi.ssd_secsize = label.d_secsize; 2909 strlcpy(sm->ssdi.ssd_vendor, "OPENBSD", sizeof(sm->ssdi.ssd_vendor)); 2910 snprintf(sm->ssdi.ssd_product, sizeof(sm->ssdi.ssd_product), 2911 "SR %s", "HOTSPARE"); 2912 snprintf(sm->ssdi.ssd_revision, sizeof(sm->ssdi.ssd_revision), 2913 "%03d", SR_META_VERSION); 2914 2915 sd = malloc(sizeof(struct sr_discipline), M_DEVBUF, M_WAITOK | M_ZERO); 2916 sd->sd_sc = sc; 2917 sd->sd_meta = sm; 2918 sd->sd_meta_type = SR_META_F_NATIVE; 2919 sd->sd_vol_status = BIOC_SVONLINE; 2920 strlcpy(sd->sd_name, "HOTSPARE", sizeof(sd->sd_name)); 2921 SLIST_INIT(&sd->sd_meta_opt); 2922 2923 /* Add chunk to volume. */ 2924 sd->sd_vol.sv_chunks = malloc(sizeof(struct sr_chunk *), M_DEVBUF, 2925 M_WAITOK | M_ZERO); 2926 sd->sd_vol.sv_chunks[0] = hotspare; 2927 SLIST_INIT(&sd->sd_vol.sv_chunk_list); 2928 SLIST_INSERT_HEAD(&sd->sd_vol.sv_chunk_list, hotspare, src_link); 2929 2930 /* Save metadata. */ 2931 if (sr_meta_save(sd, SR_META_DIRTY)) { 2932 sr_error(sc, "could not save metadata to %s", devname); 2933 goto fail; 2934 } 2935 2936 /* 2937 * Add chunk to hotspare list. 2938 */ 2939 rw_enter_write(&sc->sc_hs_lock); 2940 cl = &sc->sc_hotspare_list; 2941 if (SLIST_EMPTY(cl)) 2942 SLIST_INSERT_HEAD(cl, hotspare, src_link); 2943 else { 2944 SLIST_FOREACH(chunk, cl, src_link) 2945 last = chunk; 2946 SLIST_INSERT_AFTER(last, hotspare, src_link); 2947 } 2948 sc->sc_hotspare_no++; 2949 rw_exit_write(&sc->sc_hs_lock); 2950 2951 rv = 0; 2952 goto done; 2953 2954fail: 2955 free(hotspare, M_DEVBUF, sizeof(*hotspare)); 2956 2957done: 2958 if (sd) 2959 free(sd->sd_vol.sv_chunks, M_DEVBUF, 2960 sizeof(sd->sd_vol.sv_chunks)); 2961 free(sd, M_DEVBUF, sizeof(*sd)); 2962 free(sm, M_DEVBUF, sizeof(*sm)); 2963 if (open) { 2964 VOP_CLOSE(vn, FREAD | FWRITE, NOCRED, curproc); 2965 vput(vn); 2966 } 2967 2968 return (rv); 2969} 2970 2971void 2972sr_hotspare_rebuild_callback(void *xsd) 2973{ 2974 struct sr_discipline *sd = xsd; 2975 sr_hotspare_rebuild(sd); 2976} 2977 2978void 2979sr_hotspare_rebuild(struct sr_discipline *sd) 2980{ 2981 struct sr_softc *sc = sd->sd_sc; 2982 struct sr_chunk_head *cl; 2983 struct sr_chunk *hotspare, *chunk = NULL; 2984 struct sr_workunit *wu; 2985 struct sr_ccb *ccb; 2986 int i, s, cid, busy; 2987 2988 /* 2989 * Attempt to locate a hotspare and initiate rebuild. 2990 */ 2991 2992 /* Find first offline chunk. */ 2993 for (cid = 0; cid < sd->sd_meta->ssdi.ssd_chunk_no; cid++) { 2994 if (sd->sd_vol.sv_chunks[cid]->src_meta.scm_status == 2995 BIOC_SDOFFLINE) { 2996 chunk = sd->sd_vol.sv_chunks[cid]; 2997 break; 2998 } 2999 } 3000 if (chunk == NULL) { 3001 printf("%s: no offline chunk found on %s!\n", 3002 DEVNAME(sc), sd->sd_meta->ssd_devname); 3003 return; 3004 } 3005 3006 /* See if we have a suitable hotspare... */ 3007 rw_enter_write(&sc->sc_hs_lock); 3008 cl = &sc->sc_hotspare_list; 3009 SLIST_FOREACH(hotspare, cl, src_link) 3010 if (hotspare->src_size >= chunk->src_size && 3011 hotspare->src_secsize <= sd->sd_meta->ssdi.ssd_secsize) 3012 break; 3013 3014 if (hotspare != NULL) { 3015 3016 printf("%s: %s volume degraded, will attempt to " 3017 "rebuild on hotspare %s\n", DEVNAME(sc), 3018 sd->sd_meta->ssd_devname, hotspare->src_devname); 3019 3020 /* 3021 * Ensure that all pending I/O completes on the failed chunk 3022 * before trying to initiate a rebuild. 3023 */ 3024 i = 0; 3025 do { 3026 busy = 0; 3027 3028 s = splbio(); 3029 TAILQ_FOREACH(wu, &sd->sd_wu_pendq, swu_link) { 3030 TAILQ_FOREACH(ccb, &wu->swu_ccb, ccb_link) { 3031 if (ccb->ccb_target == cid) 3032 busy = 1; 3033 } 3034 } 3035 TAILQ_FOREACH(wu, &sd->sd_wu_defq, swu_link) { 3036 TAILQ_FOREACH(ccb, &wu->swu_ccb, ccb_link) { 3037 if (ccb->ccb_target == cid) 3038 busy = 1; 3039 } 3040 } 3041 splx(s); 3042 3043 if (busy) { 3044 tsleep_nsec(sd, PRIBIO, "sr_hotspare", 3045 SEC_TO_NSEC(1)); 3046 i++; 3047 } 3048 3049 } while (busy && i < 120); 3050 3051 DNPRINTF(SR_D_META, "%s: waited %i seconds for I/O to " 3052 "complete on failed chunk %s\n", DEVNAME(sc), 3053 i, chunk->src_devname); 3054 3055 if (busy) { 3056 printf("%s: pending I/O failed to complete on " 3057 "failed chunk %s, hotspare rebuild aborted...\n", 3058 DEVNAME(sc), chunk->src_devname); 3059 goto done; 3060 } 3061 3062 s = splbio(); 3063 rw_enter_write(&sc->sc_lock); 3064 bio_status_init(&sc->sc_status, &sc->sc_dev); 3065 if (sr_rebuild_init(sd, hotspare->src_dev_mm, 1) == 0) { 3066 3067 /* Remove hotspare from available list. */ 3068 sc->sc_hotspare_no--; 3069 SLIST_REMOVE(cl, hotspare, sr_chunk, src_link); 3070 free(hotspare, M_DEVBUF, sizeof(*hotspare)); 3071 3072 } 3073 rw_exit_write(&sc->sc_lock); 3074 splx(s); 3075 } 3076done: 3077 rw_exit_write(&sc->sc_hs_lock); 3078} 3079 3080int 3081sr_rebuild_init(struct sr_discipline *sd, dev_t dev, int hotspare) 3082{ 3083 struct sr_softc *sc = sd->sd_sc; 3084 struct sr_chunk *chunk = NULL; 3085 struct sr_meta_chunk *meta; 3086 struct disklabel label; 3087 struct vnode *vn; 3088 u_int64_t size; 3089 int64_t csize; 3090 char devname[32]; 3091 int rv = EINVAL, open = 0; 3092 int cid, i, part, status; 3093 3094 /* 3095 * Attempt to initiate a rebuild onto the specified device. 3096 */ 3097 3098 if (!(sd->sd_capabilities & SR_CAP_REBUILD)) { 3099 sr_error(sc, "discipline does not support rebuild"); 3100 goto done; 3101 } 3102 3103 /* make sure volume is in the right state */ 3104 if (sd->sd_vol_status == BIOC_SVREBUILD) { 3105 sr_error(sc, "rebuild already in progress"); 3106 goto done; 3107 } 3108 if (sd->sd_vol_status != BIOC_SVDEGRADED) { 3109 sr_error(sc, "volume not degraded"); 3110 goto done; 3111 } 3112 3113 /* Find first offline chunk. */ 3114 for (cid = 0; cid < sd->sd_meta->ssdi.ssd_chunk_no; cid++) { 3115 if (sd->sd_vol.sv_chunks[cid]->src_meta.scm_status == 3116 BIOC_SDOFFLINE) { 3117 chunk = sd->sd_vol.sv_chunks[cid]; 3118 break; 3119 } 3120 } 3121 if (chunk == NULL) { 3122 sr_error(sc, "no offline chunks available to rebuild"); 3123 goto done; 3124 } 3125 3126 /* Get coerced size from another online chunk. */ 3127 csize = 0; 3128 for (i = 0; i < sd->sd_meta->ssdi.ssd_chunk_no; i++) { 3129 if (sd->sd_vol.sv_chunks[i]->src_meta.scm_status == 3130 BIOC_SDONLINE) { 3131 meta = &sd->sd_vol.sv_chunks[i]->src_meta; 3132 csize = meta->scmi.scm_coerced_size; 3133 break; 3134 } 3135 } 3136 if (csize == 0) { 3137 sr_error(sc, "no online chunks available for rebuild"); 3138 goto done; 3139 } 3140 3141 sr_meta_getdevname(sc, dev, devname, sizeof(devname)); 3142 if (bdevvp(dev, &vn)) { 3143 printf("%s: sr_rebuild_init: can't allocate vnode\n", 3144 DEVNAME(sc)); 3145 goto done; 3146 } 3147 if (VOP_OPEN(vn, FREAD | FWRITE, NOCRED, curproc)) { 3148 DNPRINTF(SR_D_META,"%s: sr_ioctl_setstate can't " 3149 "open %s\n", DEVNAME(sc), devname); 3150 vput(vn); 3151 goto done; 3152 } 3153 open = 1; /* close dev on error */ 3154 3155 /* Get disklabel and check partition. */ 3156 part = DISKPART(dev); 3157 if (VOP_IOCTL(vn, DIOCGDINFO, (caddr_t)&label, FREAD, 3158 NOCRED, curproc)) { 3159 DNPRINTF(SR_D_META, "%s: sr_ioctl_setstate ioctl failed\n", 3160 DEVNAME(sc)); 3161 goto done; 3162 } 3163 if (label.d_partitions[part].p_fstype != FS_RAID) { 3164 sr_error(sc, "%s partition not of type RAID (%d)", 3165 devname, label.d_partitions[part].p_fstype); 3166 goto done; 3167 } 3168 3169 /* Is the partition large enough? */ 3170 size = DL_SECTOBLK(&label, DL_GETPSIZE(&label.d_partitions[part])); 3171 if (size <= sd->sd_meta->ssd_data_blkno) { 3172 sr_error(sc, "%s: %s partition too small", DEVNAME(sc), 3173 devname); 3174 goto done; 3175 } 3176 size -= sd->sd_meta->ssd_data_blkno; 3177 if (size > INT64_MAX) { 3178 sr_error(sc, "%s: %s partition too large", DEVNAME(sc), 3179 devname); 3180 goto done; 3181 } 3182 if (size < csize) { 3183 sr_error(sc, "%s partition too small, at least %lld bytes " 3184 "required", devname, (long long)(csize << DEV_BSHIFT)); 3185 goto done; 3186 } else if (size > csize) 3187 sr_warn(sc, "%s partition too large, wasting %lld bytes", 3188 devname, (long long)((size - csize) << DEV_BSHIFT)); 3189 if (label.d_secsize > sd->sd_meta->ssdi.ssd_secsize) { 3190 sr_error(sc, "%s sector size too large, <= %u bytes " 3191 "required", devname, sd->sd_meta->ssdi.ssd_secsize); 3192 goto done; 3193 } 3194 3195 /* Ensure that this chunk is not already in use. */ 3196 status = sr_chunk_in_use(sc, dev); 3197 if (status != BIOC_SDINVALID && status != BIOC_SDOFFLINE && 3198 !(hotspare && status == BIOC_SDHOTSPARE)) { 3199 sr_error(sc, "%s is already in use", devname); 3200 goto done; 3201 } 3202 3203 /* Reset rebuild counter since we rebuilding onto a new chunk. */ 3204 sd->sd_meta->ssd_rebuild = 0; 3205 3206 open = 0; /* leave dev open from here on out */ 3207 3208 /* Fix up chunk. */ 3209 memcpy(chunk->src_duid, label.d_uid, sizeof(chunk->src_duid)); 3210 chunk->src_dev_mm = dev; 3211 chunk->src_vn = vn; 3212 3213 /* Reconstruct metadata. */ 3214 meta = &chunk->src_meta; 3215 meta->scmi.scm_volid = sd->sd_meta->ssdi.ssd_volid; 3216 meta->scmi.scm_chunk_id = cid; 3217 strlcpy(meta->scmi.scm_devname, devname, 3218 sizeof(meta->scmi.scm_devname)); 3219 meta->scmi.scm_size = size; 3220 meta->scmi.scm_coerced_size = csize; 3221 memcpy(&meta->scmi.scm_uuid, &sd->sd_meta->ssdi.ssd_uuid, 3222 sizeof(meta->scmi.scm_uuid)); 3223 sr_checksum(sc, meta, &meta->scm_checksum, 3224 sizeof(struct sr_meta_chunk_invariant)); 3225 3226 sd->sd_set_chunk_state(sd, cid, BIOC_SDREBUILD); 3227 3228 if (sr_meta_save(sd, SR_META_DIRTY)) { 3229 sr_error(sc, "could not save metadata to %s", devname); 3230 open = 1; 3231 goto done; 3232 } 3233 3234 sr_warn(sc, "rebuild of %s started on %s", 3235 sd->sd_meta->ssd_devname, devname); 3236 3237 sd->sd_reb_abort = 0; 3238 kthread_create_deferred(sr_rebuild_start, sd); 3239 3240 rv = 0; 3241done: 3242 if (open) { 3243 VOP_CLOSE(vn, FREAD | FWRITE, NOCRED, curproc); 3244 vput(vn); 3245 } 3246 3247 return (rv); 3248} 3249 3250int 3251sr_rebuild_percent(struct sr_discipline *sd) 3252{ 3253 daddr_t rb, sz; 3254 3255 sz = sd->sd_meta->ssdi.ssd_size; 3256 rb = sd->sd_meta->ssd_rebuild; 3257 3258 if (rb > 0) 3259 return (100 - ((sz * 100 - rb * 100) / sz) - 1); 3260 3261 return (0); 3262} 3263 3264void 3265sr_roam_chunks(struct sr_discipline *sd) 3266{ 3267 struct sr_softc *sc = sd->sd_sc; 3268 struct sr_chunk *chunk; 3269 struct sr_meta_chunk *meta; 3270 int roamed = 0; 3271 3272 /* Have any chunks roamed? */ 3273 SLIST_FOREACH(chunk, &sd->sd_vol.sv_chunk_list, src_link) { 3274 meta = &chunk->src_meta; 3275 if (strncmp(meta->scmi.scm_devname, chunk->src_devname, 3276 sizeof(meta->scmi.scm_devname))) { 3277 3278 printf("%s: roaming device %s -> %s\n", DEVNAME(sc), 3279 meta->scmi.scm_devname, chunk->src_devname); 3280 3281 strlcpy(meta->scmi.scm_devname, chunk->src_devname, 3282 sizeof(meta->scmi.scm_devname)); 3283 3284 roamed++; 3285 } 3286 } 3287 3288 if (roamed) 3289 sr_meta_save(sd, SR_META_DIRTY); 3290} 3291 3292int 3293sr_ioctl_createraid(struct sr_softc *sc, struct bioc_createraid *bc, 3294 int user, void *data) 3295{ 3296 struct sr_meta_opt_item *omi; 3297 struct sr_chunk_head *cl; 3298 struct sr_discipline *sd = NULL; 3299 struct sr_chunk *ch_entry; 3300 struct scsi_link *link; 3301 struct device *dev; 3302 char *uuid, devname[32]; 3303 dev_t *dt = NULL; 3304 int i, no_chunk, rv = EINVAL, target, vol; 3305 int no_meta; 3306 3307 DNPRINTF(SR_D_IOCTL, "%s: sr_ioctl_createraid(%d)\n", 3308 DEVNAME(sc), user); 3309 3310 /* user input */ 3311 if (bc->bc_dev_list_len > BIOC_CRMAXLEN) 3312 goto unwind; 3313 3314 dt = malloc(bc->bc_dev_list_len, M_DEVBUF, M_WAITOK | M_ZERO); 3315 if (user) { 3316 if (copyin(bc->bc_dev_list, dt, bc->bc_dev_list_len) != 0) 3317 goto unwind; 3318 } else 3319 memcpy(dt, bc->bc_dev_list, bc->bc_dev_list_len); 3320 3321 /* Initialise discipline. */ 3322 sd = malloc(sizeof(struct sr_discipline), M_DEVBUF, M_WAITOK | M_ZERO); 3323 sd->sd_sc = sc; 3324 SLIST_INIT(&sd->sd_meta_opt); 3325 sd->sd_taskq = taskq_create("srdis", 1, IPL_BIO, 0); 3326 if (sd->sd_taskq == NULL) { 3327 sr_error(sc, "could not create discipline taskq"); 3328 goto unwind; 3329 } 3330 if (sr_discipline_init(sd, bc->bc_level)) { 3331 sr_error(sc, "could not initialize discipline"); 3332 goto unwind; 3333 } 3334 3335 no_chunk = bc->bc_dev_list_len / sizeof(dev_t); 3336 cl = &sd->sd_vol.sv_chunk_list; 3337 SLIST_INIT(cl); 3338 3339 /* Ensure that chunks are not already in use. */ 3340 for (i = 0; i < no_chunk; i++) { 3341 if (sr_chunk_in_use(sc, dt[i]) != BIOC_SDINVALID) { 3342 sr_meta_getdevname(sc, dt[i], devname, sizeof(devname)); 3343 sr_error(sc, "chunk %s already in use", devname); 3344 goto unwind; 3345 } 3346 } 3347 3348 sd->sd_meta_type = sr_meta_probe(sd, dt, no_chunk); 3349 if (sd->sd_meta_type == SR_META_F_INVALID) { 3350 sr_error(sc, "invalid metadata format"); 3351 goto unwind; 3352 } 3353 3354 if (sr_meta_attach(sd, no_chunk, bc->bc_flags & BIOC_SCFORCE)) 3355 goto unwind; 3356 3357 /* force the raid volume by clearing metadata region */ 3358 if (bc->bc_flags & BIOC_SCFORCE) { 3359 /* make sure disk isn't up and running */ 3360 if (sr_meta_read(sd)) 3361 if (sr_already_assembled(sd)) { 3362 uuid = sr_uuid_format( 3363 &sd->sd_meta->ssdi.ssd_uuid); 3364 sr_error(sc, "disk %s is currently in use; " 3365 "cannot force create", uuid); 3366 free(uuid, M_DEVBUF, 37); 3367 goto unwind; 3368 } 3369 3370 if (sr_meta_clear(sd)) { 3371 sr_error(sc, "failed to clear metadata"); 3372 goto unwind; 3373 } 3374 } 3375 3376 no_meta = sr_meta_read(sd); 3377 if (no_meta == -1) { 3378 3379 /* Corrupt metadata on one or more chunks. */ 3380 sr_error(sc, "one of the chunks has corrupt metadata; " 3381 "aborting assembly"); 3382 goto unwind; 3383 3384 } else if (no_meta == 0) { 3385 3386 /* Initialise volume and chunk metadata. */ 3387 sr_meta_init(sd, bc->bc_level, no_chunk); 3388 sd->sd_vol_status = BIOC_SVONLINE; 3389 sd->sd_meta_flags = bc->bc_flags & BIOC_SCNOAUTOASSEMBLE; 3390 if (sd->sd_create) { 3391 if ((i = sd->sd_create(sd, bc, no_chunk, 3392 sd->sd_vol.sv_chunk_minsz))) { 3393 rv = i; 3394 goto unwind; 3395 } 3396 } 3397 sr_meta_init_complete(sd); 3398 3399 DNPRINTF(SR_D_IOCTL, 3400 "%s: sr_ioctl_createraid: vol_size: %lld\n", 3401 DEVNAME(sc), sd->sd_meta->ssdi.ssd_size); 3402 3403 /* Warn if we've wasted chunk space due to coercing. */ 3404 if ((sd->sd_capabilities & SR_CAP_NON_COERCED) == 0 && 3405 sd->sd_vol.sv_chunk_minsz != sd->sd_vol.sv_chunk_maxsz) 3406 sr_warn(sc, "chunk sizes are not equal; up to %llu " 3407 "blocks wasted per chunk", 3408 sd->sd_vol.sv_chunk_maxsz - 3409 sd->sd_vol.sv_chunk_minsz); 3410 3411 } else { 3412 3413 /* Ensure we are assembling the correct # of chunks. */ 3414 if (bc->bc_level == 0x1C && 3415 sd->sd_meta->ssdi.ssd_chunk_no > no_chunk) { 3416 sr_warn(sc, "trying to bring up %s degraded", 3417 sd->sd_meta->ssd_devname); 3418 } else if (sd->sd_meta->ssdi.ssd_chunk_no != no_chunk) { 3419 sr_error(sc, "volume chunk count does not match metadata " 3420 "chunk count"); 3421 goto unwind; 3422 } 3423 3424 /* Ensure metadata level matches requested assembly level. */ 3425 if (sd->sd_meta->ssdi.ssd_level != bc->bc_level) { 3426 sr_error(sc, "volume level does not match metadata " 3427 "level"); 3428 goto unwind; 3429 } 3430 3431 if (sr_already_assembled(sd)) { 3432 uuid = sr_uuid_format(&sd->sd_meta->ssdi.ssd_uuid); 3433 sr_error(sc, "disk %s already assembled", uuid); 3434 free(uuid, M_DEVBUF, 37); 3435 goto unwind; 3436 } 3437 3438 if (user == 0 && sd->sd_meta_flags & BIOC_SCNOAUTOASSEMBLE) { 3439 DNPRINTF(SR_D_META, "%s: disk not auto assembled from " 3440 "metadata\n", DEVNAME(sc)); 3441 goto unwind; 3442 } 3443 3444 if (no_meta != no_chunk) 3445 sr_warn(sc, "trying to bring up %s degraded", 3446 sd->sd_meta->ssd_devname); 3447 3448 if (sd->sd_meta->ssd_meta_flags & SR_META_DIRTY) 3449 sr_warn(sc, "%s was not shutdown properly", 3450 sd->sd_meta->ssd_devname); 3451 3452 SLIST_FOREACH(omi, &sd->sd_meta_opt, omi_link) 3453 if (sd->sd_meta_opt_handler == NULL || 3454 sd->sd_meta_opt_handler(sd, omi->omi_som) != 0) 3455 sr_meta_opt_handler(sd, omi->omi_som); 3456 3457 if (sd->sd_assemble) { 3458 if ((i = sd->sd_assemble(sd, bc, no_chunk, data))) { 3459 rv = i; 3460 goto unwind; 3461 } 3462 } 3463 3464 DNPRINTF(SR_D_META, "%s: disk assembled from metadata\n", 3465 DEVNAME(sc)); 3466 3467 } 3468 3469 /* Metadata MUST be fully populated by this point. */ 3470 TAILQ_INSERT_TAIL(&sc->sc_dis_list, sd, sd_link); 3471 3472 /* Allocate all resources. */ 3473 if ((rv = sd->sd_alloc_resources(sd))) 3474 goto unwind; 3475 3476 /* Adjust flags if necessary. */ 3477 if ((sd->sd_capabilities & SR_CAP_AUTO_ASSEMBLE) && 3478 (bc->bc_flags & BIOC_SCNOAUTOASSEMBLE) != 3479 (sd->sd_meta->ssdi.ssd_vol_flags & BIOC_SCNOAUTOASSEMBLE)) { 3480 sd->sd_meta->ssdi.ssd_vol_flags &= ~BIOC_SCNOAUTOASSEMBLE; 3481 sd->sd_meta->ssdi.ssd_vol_flags |= 3482 bc->bc_flags & BIOC_SCNOAUTOASSEMBLE; 3483 } 3484 3485 if (sd->sd_capabilities & SR_CAP_SYSTEM_DISK) { 3486 /* Initialise volume state. */ 3487 sd->sd_set_vol_state(sd); 3488 if (sd->sd_vol_status == BIOC_SVOFFLINE) { 3489 sr_error(sc, "%s is offline, will not be brought " 3490 "online", sd->sd_meta->ssd_devname); 3491 goto unwind; 3492 } 3493 3494 /* Setup SCSI iopool. */ 3495 scsi_iopool_init(&sd->sd_iopool, sd, sr_wu_get, sr_wu_put); 3496 3497 /* 3498 * All checks passed - return ENXIO if volume cannot be created. 3499 */ 3500 rv = ENXIO; 3501 3502 /* 3503 * Find a free target. 3504 * 3505 * XXX: We reserve sd_target == 0 to indicate the 3506 * discipline is not linked into sc->sc_targets, so begin 3507 * the search with target = 1. 3508 */ 3509 for (target = 1; target < SR_MAX_LD; target++) 3510 if (sc->sc_targets[target] == NULL) 3511 break; 3512 if (target == SR_MAX_LD) { 3513 sr_error(sc, "no free target for %s", 3514 sd->sd_meta->ssd_devname); 3515 goto unwind; 3516 } 3517 3518 /* Clear sense data. */ 3519 bzero(&sd->sd_scsi_sense, sizeof(sd->sd_scsi_sense)); 3520 3521 /* Attach discipline and get midlayer to probe it. */ 3522 sd->sd_target = target; 3523 sc->sc_targets[target] = sd; 3524 if (scsi_probe_lun(sc->sc_scsibus, target, 0) != 0) { 3525 sr_error(sc, "scsi_probe_lun failed"); 3526 sc->sc_targets[target] = NULL; 3527 sd->sd_target = 0; 3528 goto unwind; 3529 } 3530 3531 link = scsi_get_link(sc->sc_scsibus, target, 0); 3532 if (link == NULL) 3533 goto unwind; 3534 3535 dev = link->device_softc; 3536 DNPRINTF(SR_D_IOCTL, "%s: sr device added: %s at target %d\n", 3537 DEVNAME(sc), dev->dv_xname, sd->sd_target); 3538 3539 /* XXX - Count volumes, not targets. */ 3540 for (i = 0, vol = -1; i <= sd->sd_target; i++) 3541 if (sc->sc_targets[i]) 3542 vol++; 3543 3544 rv = 0; 3545 3546 if (sd->sd_meta->ssd_devname[0] != '\0' && 3547 strncmp(sd->sd_meta->ssd_devname, dev->dv_xname, 3548 sizeof(dev->dv_xname))) 3549 sr_warn(sc, "volume %s is roaming, it used to be %s, " 3550 "updating metadata", dev->dv_xname, 3551 sd->sd_meta->ssd_devname); 3552 3553 /* Populate remaining volume metadata. */ 3554 sd->sd_meta->ssdi.ssd_volid = vol; 3555 strlcpy(sd->sd_meta->ssd_devname, dev->dv_xname, 3556 sizeof(sd->sd_meta->ssd_devname)); 3557 3558 sr_info(sc, "%s volume attached as %s", 3559 sd->sd_name, sd->sd_meta->ssd_devname); 3560 3561 /* Update device name on any roaming chunks. */ 3562 sr_roam_chunks(sd); 3563 3564#ifndef SMALL_KERNEL 3565 if (sr_sensors_create(sd)) 3566 sr_warn(sc, "unable to create sensor for %s", 3567 dev->dv_xname); 3568#endif /* SMALL_KERNEL */ 3569 } else { 3570 /* This volume does not attach as a system disk. */ 3571 ch_entry = SLIST_FIRST(cl); /* XXX */ 3572 strlcpy(sd->sd_meta->ssd_devname, ch_entry->src_devname, 3573 sizeof(sd->sd_meta->ssd_devname)); 3574 3575 if (sd->sd_start_discipline(sd)) 3576 goto unwind; 3577 } 3578 3579 /* Save current metadata to disk. */ 3580 rv = sr_meta_save(sd, SR_META_DIRTY); 3581 3582 if (sd->sd_vol_status == BIOC_SVREBUILD) 3583 kthread_create_deferred(sr_rebuild_start, sd); 3584 3585 sd->sd_ready = 1; 3586 3587 free(dt, M_DEVBUF, bc->bc_dev_list_len); 3588 3589 return (rv); 3590 3591unwind: 3592 free(dt, M_DEVBUF, bc->bc_dev_list_len); 3593 3594 sr_discipline_shutdown(sd, 0, 0); 3595 3596 if (rv == EAGAIN) 3597 rv = 0; 3598 3599 return (rv); 3600} 3601 3602int 3603sr_ioctl_deleteraid(struct sr_softc *sc, struct sr_discipline *sd, 3604 struct bioc_deleteraid *bd) 3605{ 3606 int rv = 1; 3607 3608 DNPRINTF(SR_D_IOCTL, "%s: sr_ioctl_deleteraid %s\n", 3609 DEVNAME(sc), bd->bd_dev); 3610 3611 if (sd == NULL && (sd = sr_find_discipline(sc, bd->bd_dev)) == NULL) { 3612 sr_error(sc, "volume %s not found", bd->bd_dev); 3613 goto bad; 3614 } 3615 3616 /* 3617 * XXX Better check for mounted file systems and refuse to detach any 3618 * volume that is actively in use. 3619 */ 3620 if (bcmp(&sr_bootuuid, &sd->sd_meta->ssdi.ssd_uuid, 3621 sizeof(sr_bootuuid)) == 0) { 3622 sr_error(sc, "refusing to delete boot volume"); 3623 goto bad; 3624 } 3625 3626 sd->sd_deleted = 1; 3627 sd->sd_meta->ssdi.ssd_vol_flags = BIOC_SCNOAUTOASSEMBLE; 3628 sr_discipline_shutdown(sd, 1, 0); 3629 3630 rv = 0; 3631bad: 3632 return (rv); 3633} 3634 3635int 3636sr_ioctl_discipline(struct sr_softc *sc, struct sr_discipline *sd, 3637 struct bioc_discipline *bd) 3638{ 3639 int rv = 1; 3640 3641 /* Dispatch a discipline specific ioctl. */ 3642 3643 DNPRINTF(SR_D_IOCTL, "%s: sr_ioctl_discipline %s\n", DEVNAME(sc), 3644 bd->bd_dev); 3645 3646 if (sd == NULL && (sd = sr_find_discipline(sc, bd->bd_dev)) == NULL) { 3647 sr_error(sc, "volume %s not found", bd->bd_dev); 3648 goto bad; 3649 } 3650 3651 if (sd->sd_ioctl_handler) 3652 rv = sd->sd_ioctl_handler(sd, bd); 3653 3654bad: 3655 return (rv); 3656} 3657 3658int 3659sr_ioctl_installboot(struct sr_softc *sc, struct sr_discipline *sd, 3660 struct bioc_installboot *bb) 3661{ 3662 void *bootblk = NULL, *bootldr = NULL; 3663 struct sr_chunk *chunk; 3664 struct sr_meta_opt_item *omi; 3665 struct sr_meta_boot *sbm; 3666 struct disk *dk; 3667 u_int32_t bbs = 0, bls = 0, secsize; 3668 u_char duid[8]; 3669 int rv = EINVAL; 3670 int i; 3671 3672 DNPRINTF(SR_D_IOCTL, "%s: sr_ioctl_installboot %s\n", DEVNAME(sc), 3673 bb->bb_dev); 3674 3675 if (sd == NULL && (sd = sr_find_discipline(sc, bb->bb_dev)) == NULL) { 3676 sr_error(sc, "volume %s not found", bb->bb_dev); 3677 goto done; 3678 } 3679 3680 TAILQ_FOREACH(dk, &disklist, dk_link) 3681 if (!strncmp(dk->dk_name, bb->bb_dev, sizeof(bb->bb_dev))) 3682 break; 3683 if (dk == NULL || dk->dk_label == NULL || 3684 duid_iszero(dk->dk_label->d_uid)) { 3685 sr_error(sc, "failed to get DUID for softraid volume"); 3686 goto done; 3687 } 3688 memcpy(duid, dk->dk_label->d_uid, sizeof(duid)); 3689 3690 /* Ensure that boot storage area is large enough. */ 3691 if (sd->sd_meta->ssd_data_blkno < (SR_BOOT_OFFSET + SR_BOOT_SIZE)) { 3692 sr_error(sc, "insufficient boot storage"); 3693 goto done; 3694 } 3695 3696 if (bb->bb_bootblk_size > SR_BOOT_BLOCKS_SIZE * DEV_BSIZE) { 3697 sr_error(sc, "boot block too large (%d > %d)", 3698 bb->bb_bootblk_size, SR_BOOT_BLOCKS_SIZE * DEV_BSIZE); 3699 goto done; 3700 } 3701 3702 if (bb->bb_bootldr_size > SR_BOOT_LOADER_SIZE * DEV_BSIZE) { 3703 sr_error(sc, "boot loader too large (%d > %d)", 3704 bb->bb_bootldr_size, SR_BOOT_LOADER_SIZE * DEV_BSIZE); 3705 goto done; 3706 } 3707 3708 secsize = sd->sd_meta->ssdi.ssd_secsize; 3709 3710 /* Copy in boot block. */ 3711 bbs = howmany(bb->bb_bootblk_size, secsize) * secsize; 3712 bootblk = malloc(bbs, M_DEVBUF, M_WAITOK | M_ZERO); 3713 if (copyin(bb->bb_bootblk, bootblk, bb->bb_bootblk_size) != 0) 3714 goto done; 3715 3716 /* Copy in boot loader. */ 3717 bls = howmany(bb->bb_bootldr_size, secsize) * secsize; 3718 bootldr = malloc(bls, M_DEVBUF, M_WAITOK | M_ZERO); 3719 if (copyin(bb->bb_bootldr, bootldr, bb->bb_bootldr_size) != 0) 3720 goto done; 3721 3722 /* Create or update optional meta for bootable volumes. */ 3723 SLIST_FOREACH(omi, &sd->sd_meta_opt, omi_link) 3724 if (omi->omi_som->som_type == SR_OPT_BOOT) 3725 break; 3726 if (omi == NULL) { 3727 omi = malloc(sizeof(struct sr_meta_opt_item), M_DEVBUF, 3728 M_WAITOK | M_ZERO); 3729 omi->omi_som = malloc(sizeof(struct sr_meta_boot), M_DEVBUF, 3730 M_WAITOK | M_ZERO); 3731 omi->omi_som->som_type = SR_OPT_BOOT; 3732 omi->omi_som->som_length = sizeof(struct sr_meta_boot); 3733 SLIST_INSERT_HEAD(&sd->sd_meta_opt, omi, omi_link); 3734 sd->sd_meta->ssdi.ssd_opt_no++; 3735 } 3736 sbm = (struct sr_meta_boot *)omi->omi_som; 3737 3738 memcpy(sbm->sbm_root_duid, duid, sizeof(sbm->sbm_root_duid)); 3739 bzero(&sbm->sbm_boot_duid, sizeof(sbm->sbm_boot_duid)); 3740 sbm->sbm_bootblk_size = bbs; 3741 sbm->sbm_bootldr_size = bls; 3742 3743 DNPRINTF(SR_D_IOCTL, "sr_ioctl_installboot: root duid is %s\n", 3744 duid_format(sbm->sbm_root_duid)); 3745 3746 /* Save boot block and boot loader to each chunk. */ 3747 for (i = 0; i < sd->sd_meta->ssdi.ssd_chunk_no; i++) { 3748 3749 chunk = sd->sd_vol.sv_chunks[i]; 3750 if (chunk->src_meta.scm_status != BIOC_SDONLINE && 3751 chunk->src_meta.scm_status != BIOC_SDREBUILD) 3752 continue; 3753 3754 if (i < SR_MAX_BOOT_DISKS) 3755 memcpy(&sbm->sbm_boot_duid[i], chunk->src_duid, 3756 sizeof(sbm->sbm_boot_duid[i])); 3757 3758 /* Save boot blocks. */ 3759 DNPRINTF(SR_D_IOCTL, 3760 "sr_ioctl_installboot: saving boot block to %s " 3761 "(%u bytes)\n", chunk->src_devname, bbs); 3762 3763 if (sr_rw(sc, chunk->src_dev_mm, bootblk, bbs, 3764 SR_BOOT_BLOCKS_OFFSET, B_WRITE)) { 3765 sr_error(sc, "failed to write boot block"); 3766 goto done; 3767 } 3768 3769 /* Save boot loader.*/ 3770 DNPRINTF(SR_D_IOCTL, 3771 "sr_ioctl_installboot: saving boot loader to %s " 3772 "(%u bytes)\n", chunk->src_devname, bls); 3773 3774 if (sr_rw(sc, chunk->src_dev_mm, bootldr, bls, 3775 SR_BOOT_LOADER_OFFSET, B_WRITE)) { 3776 sr_error(sc, "failed to write boot loader"); 3777 goto done; 3778 } 3779 } 3780 3781 /* XXX - Install boot block on disk - MD code. */ 3782 3783 /* Mark volume as bootable and save metadata. */ 3784 sd->sd_meta->ssdi.ssd_vol_flags |= BIOC_SCBOOTABLE; 3785 if (sr_meta_save(sd, SR_META_DIRTY)) { 3786 sr_error(sc, "could not save metadata to %s", DEVNAME(sc)); 3787 goto done; 3788 } 3789 3790 rv = 0; 3791 3792done: 3793 free(bootblk, M_DEVBUF, bbs); 3794 free(bootldr, M_DEVBUF, bls); 3795 3796 return (rv); 3797} 3798 3799void 3800sr_chunks_unwind(struct sr_softc *sc, struct sr_chunk_head *cl) 3801{ 3802 struct sr_chunk *ch_entry, *ch_next; 3803 3804 DNPRINTF(SR_D_IOCTL, "%s: sr_chunks_unwind\n", DEVNAME(sc)); 3805 3806 if (!cl) 3807 return; 3808 3809 for (ch_entry = SLIST_FIRST(cl); ch_entry != NULL; ch_entry = ch_next) { 3810 ch_next = SLIST_NEXT(ch_entry, src_link); 3811 3812 DNPRINTF(SR_D_IOCTL, "%s: sr_chunks_unwind closing: %s\n", 3813 DEVNAME(sc), ch_entry->src_devname); 3814 if (ch_entry->src_vn) { 3815 /* 3816 * XXX - explicitly lock the vnode until we can resolve 3817 * the problem introduced by vnode aliasing... specfs 3818 * has no locking, whereas ufs/ffs does! 3819 */ 3820 vn_lock(ch_entry->src_vn, LK_EXCLUSIVE | LK_RETRY); 3821 VOP_CLOSE(ch_entry->src_vn, FREAD | FWRITE, NOCRED, 3822 curproc); 3823 vput(ch_entry->src_vn); 3824 } 3825 free(ch_entry, M_DEVBUF, sizeof(*ch_entry)); 3826 } 3827 SLIST_INIT(cl); 3828} 3829 3830void 3831sr_discipline_free(struct sr_discipline *sd) 3832{ 3833 struct sr_softc *sc; 3834 struct sr_discipline *sdtmp1; 3835 struct sr_meta_opt_head *som; 3836 struct sr_meta_opt_item *omi, *omi_next; 3837 3838 if (!sd) 3839 return; 3840 3841 sc = sd->sd_sc; 3842 3843 DNPRINTF(SR_D_DIS, "%s: sr_discipline_free %s\n", 3844 DEVNAME(sc), 3845 sd->sd_meta ? sd->sd_meta->ssd_devname : "nodev"); 3846 if (sd->sd_free_resources) 3847 sd->sd_free_resources(sd); 3848 free(sd->sd_vol.sv_chunks, M_DEVBUF, 0); 3849 free(sd->sd_meta, M_DEVBUF, SR_META_SIZE * DEV_BSIZE); 3850 free(sd->sd_meta_foreign, M_DEVBUF, smd[sd->sd_meta_type].smd_size); 3851 3852 som = &sd->sd_meta_opt; 3853 for (omi = SLIST_FIRST(som); omi != NULL; omi = omi_next) { 3854 omi_next = SLIST_NEXT(omi, omi_link); 3855 free(omi->omi_som, M_DEVBUF, 0); 3856 free(omi, M_DEVBUF, sizeof(*omi)); 3857 } 3858 3859 if (sd->sd_target != 0) { 3860 KASSERT(sc->sc_targets[sd->sd_target] == sd); 3861 sc->sc_targets[sd->sd_target] = NULL; 3862 } 3863 3864 TAILQ_FOREACH(sdtmp1, &sc->sc_dis_list, sd_link) { 3865 if (sdtmp1 == sd) 3866 break; 3867 } 3868 if (sdtmp1 != NULL) 3869 TAILQ_REMOVE(&sc->sc_dis_list, sd, sd_link); 3870 3871 explicit_bzero(sd, sizeof *sd); 3872 free(sd, M_DEVBUF, sizeof(*sd)); 3873} 3874 3875void 3876sr_discipline_shutdown(struct sr_discipline *sd, int meta_save, int dying) 3877{ 3878 struct sr_softc *sc; 3879 int ret, s; 3880 3881 if (!sd) 3882 return; 3883 sc = sd->sd_sc; 3884 3885 DNPRINTF(SR_D_DIS, "%s: sr_discipline_shutdown %s\n", DEVNAME(sc), 3886 sd->sd_meta ? sd->sd_meta->ssd_devname : "nodev"); 3887 3888 /* If rebuilding, abort rebuild and drain I/O. */ 3889 if (sd->sd_reb_active) { 3890 sd->sd_reb_abort = 1; 3891 while (sd->sd_reb_active) 3892 tsleep_nsec(sd, PWAIT, "sr_shutdown", MSEC_TO_NSEC(1)); 3893 } 3894 3895 if (meta_save) 3896 sr_meta_save(sd, 0); 3897 3898 s = splbio(); 3899 3900 sd->sd_ready = 0; 3901 3902 /* make sure there isn't a sync pending and yield */ 3903 wakeup(sd); 3904 while (sd->sd_sync || sd->sd_must_flush) { 3905 ret = tsleep_nsec(&sd->sd_sync, MAXPRI, "sr_down", 3906 SEC_TO_NSEC(60)); 3907 if (ret == EWOULDBLOCK) 3908 break; 3909 } 3910 if (dying == -1) { 3911 sd->sd_ready = 1; 3912 splx(s); 3913 return; 3914 } 3915 3916#ifndef SMALL_KERNEL 3917 sr_sensors_delete(sd); 3918#endif /* SMALL_KERNEL */ 3919 3920 if (sd->sd_target != 0) 3921 scsi_detach_lun(sc->sc_scsibus, sd->sd_target, 0, 3922 dying ? 0 : DETACH_FORCE); 3923 3924 sr_chunks_unwind(sc, &sd->sd_vol.sv_chunk_list); 3925 3926 if (sd->sd_taskq) 3927 taskq_destroy(sd->sd_taskq); 3928 3929 sr_discipline_free(sd); 3930 3931 splx(s); 3932} 3933 3934int 3935sr_discipline_init(struct sr_discipline *sd, int level) 3936{ 3937 int rv = 1; 3938 3939 /* Initialise discipline function pointers with defaults. */ 3940 sd->sd_alloc_resources = sr_alloc_resources; 3941 sd->sd_assemble = NULL; 3942 sd->sd_create = NULL; 3943 sd->sd_free_resources = sr_free_resources; 3944 sd->sd_ioctl_handler = NULL; 3945 sd->sd_openings = NULL; 3946 sd->sd_meta_opt_handler = NULL; 3947 sd->sd_rebuild = sr_rebuild; 3948 sd->sd_scsi_inquiry = sr_raid_inquiry; 3949 sd->sd_scsi_read_cap = sr_raid_read_cap; 3950 sd->sd_scsi_tur = sr_raid_tur; 3951 sd->sd_scsi_req_sense = sr_raid_request_sense; 3952 sd->sd_scsi_start_stop = sr_raid_start_stop; 3953 sd->sd_scsi_sync = sr_raid_sync; 3954 sd->sd_scsi_rw = NULL; 3955 sd->sd_scsi_intr = sr_raid_intr; 3956 sd->sd_scsi_wu_done = NULL; 3957 sd->sd_scsi_done = NULL; 3958 sd->sd_set_chunk_state = sr_set_chunk_state; 3959 sd->sd_set_vol_state = sr_set_vol_state; 3960 sd->sd_start_discipline = NULL; 3961 3962 task_set(&sd->sd_meta_save_task, sr_meta_save_callback, sd); 3963 task_set(&sd->sd_hotspare_rebuild_task, sr_hotspare_rebuild_callback, 3964 sd); 3965 3966 sd->sd_wu_size = sizeof(struct sr_workunit); 3967 switch (level) { 3968 case 0: 3969 sr_raid0_discipline_init(sd); 3970 break; 3971 case 1: 3972 sr_raid1_discipline_init(sd); 3973 break; 3974 case 5: 3975 sr_raid5_discipline_init(sd); 3976 break; 3977 case 6: 3978 sr_raid6_discipline_init(sd); 3979 break; 3980#ifdef CRYPTO 3981 case 'C': 3982 sr_crypto_discipline_init(sd); 3983 break; 3984 case 0x1C: 3985 sr_raid1c_discipline_init(sd); 3986 break; 3987#endif 3988 case 'c': 3989 sr_concat_discipline_init(sd); 3990 break; 3991 default: 3992 goto bad; 3993 } 3994 3995 rv = 0; 3996bad: 3997 return (rv); 3998} 3999 4000int 4001sr_raid_inquiry(struct sr_workunit *wu) 4002{ 4003 struct sr_discipline *sd = wu->swu_dis; 4004 struct scsi_xfer *xs = wu->swu_xs; 4005 struct scsi_inquiry *cdb = (struct scsi_inquiry *)&xs->cmd; 4006 struct scsi_inquiry_data inq; 4007 4008 DNPRINTF(SR_D_DIS, "%s: sr_raid_inquiry\n", DEVNAME(sd->sd_sc)); 4009 4010 if (xs->cmdlen != sizeof(*cdb)) 4011 return (EINVAL); 4012 4013 if (ISSET(cdb->flags, SI_EVPD)) 4014 return (EOPNOTSUPP); 4015 4016 bzero(&inq, sizeof(inq)); 4017 inq.device = T_DIRECT; 4018 inq.dev_qual2 = 0; 4019 inq.version = SCSI_REV_2; 4020 inq.response_format = SID_SCSI2_RESPONSE; 4021 inq.additional_length = SID_SCSI2_ALEN; 4022 inq.flags |= SID_CmdQue; 4023 strlcpy(inq.vendor, sd->sd_meta->ssdi.ssd_vendor, 4024 sizeof(inq.vendor)); 4025 strlcpy(inq.product, sd->sd_meta->ssdi.ssd_product, 4026 sizeof(inq.product)); 4027 strlcpy(inq.revision, sd->sd_meta->ssdi.ssd_revision, 4028 sizeof(inq.revision)); 4029 scsi_copy_internal_data(xs, &inq, sizeof(inq)); 4030 4031 return (0); 4032} 4033 4034int 4035sr_raid_read_cap(struct sr_workunit *wu) 4036{ 4037 struct sr_discipline *sd = wu->swu_dis; 4038 struct scsi_xfer *xs = wu->swu_xs; 4039 struct scsi_read_cap_data rcd; 4040 struct scsi_read_cap_data_16 rcd16; 4041 u_int64_t addr; 4042 int rv = 1; 4043 u_int32_t secsize; 4044 4045 DNPRINTF(SR_D_DIS, "%s: sr_raid_read_cap\n", DEVNAME(sd->sd_sc)); 4046 4047 secsize = sd->sd_meta->ssdi.ssd_secsize; 4048 4049 addr = ((sd->sd_meta->ssdi.ssd_size * DEV_BSIZE) / secsize) - 1; 4050 if (xs->cmd.opcode == READ_CAPACITY) { 4051 bzero(&rcd, sizeof(rcd)); 4052 if (addr > 0xffffffffllu) 4053 _lto4b(0xffffffff, rcd.addr); 4054 else 4055 _lto4b(addr, rcd.addr); 4056 _lto4b(secsize, rcd.length); 4057 scsi_copy_internal_data(xs, &rcd, sizeof(rcd)); 4058 rv = 0; 4059 } else if (xs->cmd.opcode == READ_CAPACITY_16) { 4060 bzero(&rcd16, sizeof(rcd16)); 4061 _lto8b(addr, rcd16.addr); 4062 _lto4b(secsize, rcd16.length); 4063 scsi_copy_internal_data(xs, &rcd16, sizeof(rcd16)); 4064 rv = 0; 4065 } 4066 4067 return (rv); 4068} 4069 4070int 4071sr_raid_tur(struct sr_workunit *wu) 4072{ 4073 struct sr_discipline *sd = wu->swu_dis; 4074 4075 DNPRINTF(SR_D_DIS, "%s: sr_raid_tur\n", DEVNAME(sd->sd_sc)); 4076 4077 if (sd->sd_vol_status == BIOC_SVOFFLINE) { 4078 sd->sd_scsi_sense.error_code = SSD_ERRCODE_CURRENT; 4079 sd->sd_scsi_sense.flags = SKEY_NOT_READY; 4080 sd->sd_scsi_sense.add_sense_code = 0x04; 4081 sd->sd_scsi_sense.add_sense_code_qual = 0x11; 4082 sd->sd_scsi_sense.extra_len = 4; 4083 return (1); 4084 } else if (sd->sd_vol_status == BIOC_SVINVALID) { 4085 sd->sd_scsi_sense.error_code = SSD_ERRCODE_CURRENT; 4086 sd->sd_scsi_sense.flags = SKEY_HARDWARE_ERROR; 4087 sd->sd_scsi_sense.add_sense_code = 0x05; 4088 sd->sd_scsi_sense.add_sense_code_qual = 0x00; 4089 sd->sd_scsi_sense.extra_len = 4; 4090 return (1); 4091 } 4092 4093 return (0); 4094} 4095 4096int 4097sr_raid_request_sense(struct sr_workunit *wu) 4098{ 4099 struct sr_discipline *sd = wu->swu_dis; 4100 struct scsi_xfer *xs = wu->swu_xs; 4101 4102 DNPRINTF(SR_D_DIS, "%s: sr_raid_request_sense\n", 4103 DEVNAME(sd->sd_sc)); 4104 4105 /* use latest sense data */ 4106 memcpy(&xs->sense, &sd->sd_scsi_sense, sizeof(xs->sense)); 4107 4108 /* clear sense data */ 4109 bzero(&sd->sd_scsi_sense, sizeof(sd->sd_scsi_sense)); 4110 4111 return (0); 4112} 4113 4114int 4115sr_raid_start_stop(struct sr_workunit *wu) 4116{ 4117 struct scsi_xfer *xs = wu->swu_xs; 4118 struct scsi_start_stop *ss = (struct scsi_start_stop *)&xs->cmd; 4119 4120 DNPRINTF(SR_D_DIS, "%s: sr_raid_start_stop\n", 4121 DEVNAME(wu->swu_dis->sd_sc)); 4122 4123 if (!ss) 4124 return (1); 4125 4126 /* 4127 * do nothing! 4128 * a softraid discipline should always reflect correct status 4129 */ 4130 return (0); 4131} 4132 4133int 4134sr_raid_sync(struct sr_workunit *wu) 4135{ 4136 struct sr_discipline *sd = wu->swu_dis; 4137 int s, ret, rv = 0, ios; 4138 4139 DNPRINTF(SR_D_DIS, "%s: sr_raid_sync\n", DEVNAME(sd->sd_sc)); 4140 4141 /* when doing a fake sync don't count the wu */ 4142 ios = (wu->swu_flags & SR_WUF_FAKE) ? 0 : 1; 4143 4144 s = splbio(); 4145 sd->sd_sync = 1; 4146 while (sd->sd_wu_pending > ios) { 4147 ret = tsleep_nsec(sd, PRIBIO, "sr_sync", SEC_TO_NSEC(15)); 4148 if (ret == EWOULDBLOCK) { 4149 DNPRINTF(SR_D_DIS, "%s: sr_raid_sync timeout\n", 4150 DEVNAME(sd->sd_sc)); 4151 rv = 1; 4152 break; 4153 } 4154 } 4155 sd->sd_sync = 0; 4156 splx(s); 4157 4158 wakeup(&sd->sd_sync); 4159 4160 return (rv); 4161} 4162 4163void 4164sr_raid_intr(struct buf *bp) 4165{ 4166 struct sr_ccb *ccb = (struct sr_ccb *)bp; 4167 struct sr_workunit *wu = ccb->ccb_wu; 4168#ifdef SR_DEBUG 4169 struct sr_discipline *sd = wu->swu_dis; 4170 struct scsi_xfer *xs = wu->swu_xs; 4171#endif 4172 int s; 4173 4174 DNPRINTF(SR_D_INTR, "%s: %s %s intr bp %p xs %p\n", 4175 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname, sd->sd_name, bp, xs); 4176 4177 s = splbio(); 4178 sr_ccb_done(ccb); 4179 sr_wu_done(wu); 4180 splx(s); 4181} 4182 4183void 4184sr_schedule_wu(struct sr_workunit *wu) 4185{ 4186 struct sr_discipline *sd = wu->swu_dis; 4187 struct sr_workunit *wup; 4188 int s; 4189 4190 DNPRINTF(SR_D_WU, "sr_schedule_wu: schedule wu %p state %i " 4191 "flags 0x%x\n", wu, wu->swu_state, wu->swu_flags); 4192 4193 KASSERT(wu->swu_io_count > 0); 4194 4195 s = splbio(); 4196 4197 /* Construct the work unit, do not schedule it. */ 4198 if (wu->swu_state == SR_WU_CONSTRUCT) 4199 goto queued; 4200 4201 /* Deferred work unit being reconstructed, do not start. */ 4202 if (wu->swu_state == SR_WU_REQUEUE) 4203 goto queued; 4204 4205 /* Current work unit failed, restart. */ 4206 if (wu->swu_state == SR_WU_RESTART) 4207 goto start; 4208 4209 if (wu->swu_state != SR_WU_INPROGRESS) 4210 panic("sr_schedule_wu: work unit not in progress (state %i)", 4211 wu->swu_state); 4212 4213 /* Walk queue backwards and fill in collider if we have one. */ 4214 TAILQ_FOREACH_REVERSE(wup, &sd->sd_wu_pendq, sr_wu_list, swu_link) { 4215 if (wu->swu_blk_end < wup->swu_blk_start || 4216 wup->swu_blk_end < wu->swu_blk_start) 4217 continue; 4218 4219 /* Defer work unit due to LBA collision. */ 4220 DNPRINTF(SR_D_WU, "sr_schedule_wu: deferring work unit %p\n", 4221 wu); 4222 wu->swu_state = SR_WU_DEFERRED; 4223 while (wup->swu_collider) 4224 wup = wup->swu_collider; 4225 wup->swu_collider = wu; 4226 TAILQ_INSERT_TAIL(&sd->sd_wu_defq, wu, swu_link); 4227 sd->sd_wu_collisions++; 4228 goto queued; 4229 } 4230 4231start: 4232 sr_raid_startwu(wu); 4233 4234queued: 4235 splx(s); 4236} 4237 4238void 4239sr_raid_startwu(struct sr_workunit *wu) 4240{ 4241 struct sr_discipline *sd = wu->swu_dis; 4242 struct sr_ccb *ccb; 4243 4244 DNPRINTF(SR_D_WU, "sr_raid_startwu: start wu %p\n", wu); 4245 4246 splassert(IPL_BIO); 4247 4248 if (wu->swu_state == SR_WU_DEFERRED) { 4249 TAILQ_REMOVE(&sd->sd_wu_defq, wu, swu_link); 4250 wu->swu_state = SR_WU_INPROGRESS; 4251 } 4252 4253 if (wu->swu_state != SR_WU_RESTART) 4254 TAILQ_INSERT_TAIL(&sd->sd_wu_pendq, wu, swu_link); 4255 4256 /* Start all of the individual I/Os. */ 4257 if (wu->swu_cb_active == 1) 4258 panic("%s: sr_startwu_callback", DEVNAME(sd->sd_sc)); 4259 wu->swu_cb_active = 1; 4260 4261 TAILQ_FOREACH(ccb, &wu->swu_ccb, ccb_link) 4262 VOP_STRATEGY(ccb->ccb_buf.b_vp, &ccb->ccb_buf); 4263 4264 wu->swu_cb_active = 0; 4265} 4266 4267void 4268sr_raid_recreate_wu(struct sr_workunit *wu) 4269{ 4270 struct sr_discipline *sd = wu->swu_dis; 4271 struct sr_workunit *wup = wu; 4272 4273 /* 4274 * Recreate a work unit by releasing the associated CCBs and reissuing 4275 * the SCSI I/O request. This process is then repeated for all of the 4276 * colliding work units. 4277 */ 4278 do { 4279 sr_wu_release_ccbs(wup); 4280 4281 wup->swu_state = SR_WU_REQUEUE; 4282 if (sd->sd_scsi_rw(wup)) 4283 panic("could not requeue I/O"); 4284 4285 wup = wup->swu_collider; 4286 } while (wup); 4287} 4288 4289int 4290sr_alloc_resources(struct sr_discipline *sd) 4291{ 4292 if (sr_wu_alloc(sd)) { 4293 sr_error(sd->sd_sc, "unable to allocate work units"); 4294 return (ENOMEM); 4295 } 4296 if (sr_ccb_alloc(sd)) { 4297 sr_error(sd->sd_sc, "unable to allocate ccbs"); 4298 return (ENOMEM); 4299 } 4300 4301 return (0); 4302} 4303 4304void 4305sr_free_resources(struct sr_discipline *sd) 4306{ 4307 sr_wu_free(sd); 4308 sr_ccb_free(sd); 4309} 4310 4311void 4312sr_set_chunk_state(struct sr_discipline *sd, int c, int new_state) 4313{ 4314 int old_state, s; 4315 4316 DNPRINTF(SR_D_STATE, "%s: %s: %s: sr_set_chunk_state %d -> %d\n", 4317 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname, 4318 sd->sd_vol.sv_chunks[c]->src_meta.scmi.scm_devname, c, new_state); 4319 4320 /* ok to go to splbio since this only happens in error path */ 4321 s = splbio(); 4322 old_state = sd->sd_vol.sv_chunks[c]->src_meta.scm_status; 4323 4324 /* multiple IOs to the same chunk that fail will come through here */ 4325 if (old_state == new_state) 4326 goto done; 4327 4328 switch (old_state) { 4329 case BIOC_SDONLINE: 4330 if (new_state == BIOC_SDOFFLINE) 4331 break; 4332 else 4333 goto die; 4334 break; 4335 4336 case BIOC_SDOFFLINE: 4337 goto die; 4338 4339 default: 4340die: 4341 splx(s); /* XXX */ 4342 panic("%s: %s: %s: invalid chunk state transition %d -> %d", 4343 DEVNAME(sd->sd_sc), 4344 sd->sd_meta->ssd_devname, 4345 sd->sd_vol.sv_chunks[c]->src_meta.scmi.scm_devname, 4346 old_state, new_state); 4347 /* NOTREACHED */ 4348 } 4349 4350 sd->sd_vol.sv_chunks[c]->src_meta.scm_status = new_state; 4351 sd->sd_set_vol_state(sd); 4352 4353 sd->sd_must_flush = 1; 4354 task_add(systq, &sd->sd_meta_save_task); 4355done: 4356 splx(s); 4357} 4358 4359void 4360sr_set_vol_state(struct sr_discipline *sd) 4361{ 4362 int states[SR_MAX_STATES]; 4363 int new_state, i, nd; 4364 int old_state = sd->sd_vol_status; 4365 u_int32_t s; 4366 4367 DNPRINTF(SR_D_STATE, "%s: %s: sr_set_vol_state\n", 4368 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname); 4369 4370 nd = sd->sd_meta->ssdi.ssd_chunk_no; 4371 4372 for (i = 0; i < SR_MAX_STATES; i++) 4373 states[i] = 0; 4374 4375 for (i = 0; i < nd; i++) { 4376 s = sd->sd_vol.sv_chunks[i]->src_meta.scm_status; 4377 if (s >= SR_MAX_STATES) 4378 panic("%s: %s: %s: invalid chunk state", 4379 DEVNAME(sd->sd_sc), 4380 sd->sd_meta->ssd_devname, 4381 sd->sd_vol.sv_chunks[i]->src_meta.scmi.scm_devname); 4382 states[s]++; 4383 } 4384 4385 if (states[BIOC_SDONLINE] == nd) 4386 new_state = BIOC_SVONLINE; 4387 else 4388 new_state = BIOC_SVOFFLINE; 4389 4390 DNPRINTF(SR_D_STATE, "%s: %s: sr_set_vol_state %d -> %d\n", 4391 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname, 4392 old_state, new_state); 4393 4394 switch (old_state) { 4395 case BIOC_SVONLINE: 4396 if (new_state == BIOC_SVOFFLINE || new_state == BIOC_SVONLINE) 4397 break; 4398 else 4399 goto die; 4400 break; 4401 4402 case BIOC_SVOFFLINE: 4403 /* XXX this might be a little too much */ 4404 goto die; 4405 4406 default: 4407die: 4408 panic("%s: %s: invalid volume state transition %d -> %d", 4409 DEVNAME(sd->sd_sc), 4410 sd->sd_meta->ssd_devname, 4411 old_state, new_state); 4412 /* NOTREACHED */ 4413 } 4414 4415 sd->sd_vol_status = new_state; 4416} 4417 4418void * 4419sr_block_get(struct sr_discipline *sd, long length) 4420{ 4421 return dma_alloc(length, PR_NOWAIT | PR_ZERO); 4422} 4423 4424void 4425sr_block_put(struct sr_discipline *sd, void *ptr, int length) 4426{ 4427 dma_free(ptr, length); 4428} 4429 4430void 4431sr_checksum_print(u_int8_t *md5) 4432{ 4433 int i; 4434 4435 for (i = 0; i < MD5_DIGEST_LENGTH; i++) 4436 printf("%02x", md5[i]); 4437} 4438 4439void 4440sr_checksum(struct sr_softc *sc, void *src, void *md5, u_int32_t len) 4441{ 4442 MD5_CTX ctx; 4443 4444 DNPRINTF(SR_D_MISC, "%s: sr_checksum(%p %p %d)\n", DEVNAME(sc), src, 4445 md5, len); 4446 4447 MD5Init(&ctx); 4448 MD5Update(&ctx, src, len); 4449 MD5Final(md5, &ctx); 4450} 4451 4452void 4453sr_uuid_generate(struct sr_uuid *uuid) 4454{ 4455 arc4random_buf(uuid->sui_id, sizeof(uuid->sui_id)); 4456 /* UUID version 4: random */ 4457 uuid->sui_id[6] &= 0x0f; 4458 uuid->sui_id[6] |= 0x40; 4459 /* RFC4122 variant */ 4460 uuid->sui_id[8] &= 0x3f; 4461 uuid->sui_id[8] |= 0x80; 4462} 4463 4464char * 4465sr_uuid_format(struct sr_uuid *uuid) 4466{ 4467 char *uuidstr; 4468 4469 uuidstr = malloc(37, M_DEVBUF, M_WAITOK); 4470 4471 snprintf(uuidstr, 37, 4472 "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-" 4473 "%02x%02x%02x%02x%02x%02x", 4474 uuid->sui_id[0], uuid->sui_id[1], 4475 uuid->sui_id[2], uuid->sui_id[3], 4476 uuid->sui_id[4], uuid->sui_id[5], 4477 uuid->sui_id[6], uuid->sui_id[7], 4478 uuid->sui_id[8], uuid->sui_id[9], 4479 uuid->sui_id[10], uuid->sui_id[11], 4480 uuid->sui_id[12], uuid->sui_id[13], 4481 uuid->sui_id[14], uuid->sui_id[15]); 4482 4483 return uuidstr; 4484} 4485 4486void 4487sr_uuid_print(struct sr_uuid *uuid, int cr) 4488{ 4489 char *uuidstr; 4490 4491 uuidstr = sr_uuid_format(uuid); 4492 printf("%s%s", uuidstr, (cr ? "\n" : "")); 4493 free(uuidstr, M_DEVBUF, 37); 4494} 4495 4496int 4497sr_already_assembled(struct sr_discipline *sd) 4498{ 4499 struct sr_softc *sc = sd->sd_sc; 4500 struct sr_discipline *sdtmp; 4501 4502 TAILQ_FOREACH(sdtmp, &sc->sc_dis_list, sd_link) { 4503 if (!bcmp(&sd->sd_meta->ssdi.ssd_uuid, 4504 &sdtmp->sd_meta->ssdi.ssd_uuid, 4505 sizeof(sd->sd_meta->ssdi.ssd_uuid))) 4506 return (1); 4507 } 4508 4509 return (0); 4510} 4511 4512int32_t 4513sr_validate_stripsize(u_int32_t b) 4514{ 4515 int s = 0; 4516 4517 if (b % DEV_BSIZE) 4518 return (-1); 4519 4520 while ((b & 1) == 0) { 4521 b >>= 1; 4522 s++; 4523 } 4524 4525 /* only multiple of twos */ 4526 b >>= 1; 4527 if (b) 4528 return(-1); 4529 4530 return (s); 4531} 4532 4533void 4534sr_quiesce(void) 4535{ 4536 struct sr_softc *sc = softraid0; 4537 struct sr_discipline *sd, *nsd; 4538 4539 if (sc == NULL) 4540 return; 4541 4542 /* Shutdown disciplines in reverse attach order. */ 4543 TAILQ_FOREACH_REVERSE_SAFE(sd, &sc->sc_dis_list, 4544 sr_discipline_list, sd_link, nsd) 4545 sr_discipline_shutdown(sd, 1, -1); 4546} 4547 4548void 4549sr_shutdown(int dying) 4550{ 4551 struct sr_softc *sc = softraid0; 4552 struct sr_discipline *sd; 4553 4554 if (sc == NULL) 4555 return; 4556 4557 DNPRINTF(SR_D_MISC, "%s: sr_shutdown\n", DEVNAME(sc)); 4558 4559 /* 4560 * Since softraid is not under mainbus, we have to explicitly 4561 * notify its children that the power is going down, so they 4562 * can execute their shutdown hooks. 4563 */ 4564 config_suspend((struct device *)sc, DVACT_POWERDOWN); 4565 4566 /* Shutdown disciplines in reverse attach order. */ 4567 while ((sd = TAILQ_LAST(&sc->sc_dis_list, sr_discipline_list)) != NULL) 4568 sr_discipline_shutdown(sd, 1, dying); 4569} 4570 4571int 4572sr_validate_io(struct sr_workunit *wu, daddr_t *blkno, char *func) 4573{ 4574 struct sr_discipline *sd = wu->swu_dis; 4575 struct scsi_xfer *xs = wu->swu_xs; 4576 int rv = 1; 4577 4578 DNPRINTF(SR_D_DIS, "%s: %s 0x%02x\n", DEVNAME(sd->sd_sc), func, 4579 xs->cmd.opcode); 4580 4581 if (sd->sd_meta->ssd_data_blkno == 0) 4582 panic("invalid data blkno"); 4583 4584 if (sd->sd_vol_status == BIOC_SVOFFLINE) { 4585 DNPRINTF(SR_D_DIS, "%s: %s device offline\n", 4586 DEVNAME(sd->sd_sc), func); 4587 goto bad; 4588 } 4589 4590 if (xs->datalen == 0) { 4591 printf("%s: %s: illegal block count for %s\n", 4592 DEVNAME(sd->sd_sc), func, sd->sd_meta->ssd_devname); 4593 goto bad; 4594 } 4595 4596 if (xs->cmdlen == 10) 4597 *blkno = _4btol(((struct scsi_rw_10 *)&xs->cmd)->addr); 4598 else if (xs->cmdlen == 16) 4599 *blkno = _8btol(((struct scsi_rw_16 *)&xs->cmd)->addr); 4600 else if (xs->cmdlen == 6) 4601 *blkno = _3btol(((struct scsi_rw *)&xs->cmd)->addr); 4602 else { 4603 printf("%s: %s: illegal cmdlen for %s\n", 4604 DEVNAME(sd->sd_sc), func, sd->sd_meta->ssd_devname); 4605 goto bad; 4606 } 4607 4608 *blkno *= (sd->sd_meta->ssdi.ssd_secsize / DEV_BSIZE); 4609 4610 wu->swu_blk_start = *blkno; 4611 wu->swu_blk_end = *blkno + (xs->datalen >> DEV_BSHIFT) - 1; 4612 4613 if (wu->swu_blk_end > sd->sd_meta->ssdi.ssd_size) { 4614 DNPRINTF(SR_D_DIS, "%s: %s out of bounds start: %lld " 4615 "end: %lld length: %d\n", 4616 DEVNAME(sd->sd_sc), func, (long long)wu->swu_blk_start, 4617 (long long)wu->swu_blk_end, xs->datalen); 4618 4619 sd->sd_scsi_sense.error_code = SSD_ERRCODE_CURRENT | 4620 SSD_ERRCODE_VALID; 4621 sd->sd_scsi_sense.flags = SKEY_ILLEGAL_REQUEST; 4622 sd->sd_scsi_sense.add_sense_code = 0x21; 4623 sd->sd_scsi_sense.add_sense_code_qual = 0x00; 4624 sd->sd_scsi_sense.extra_len = 4; 4625 goto bad; 4626 } 4627 4628 rv = 0; 4629bad: 4630 return (rv); 4631} 4632 4633void 4634sr_rebuild_start(void *arg) 4635{ 4636 struct sr_discipline *sd = arg; 4637 struct sr_softc *sc = sd->sd_sc; 4638 4639 DNPRINTF(SR_D_REBUILD, "%s: %s starting rebuild thread\n", 4640 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname); 4641 4642 if (kthread_create(sr_rebuild_thread, sd, &sd->sd_background_proc, 4643 DEVNAME(sc)) != 0) 4644 printf("%s: unable to start background operation\n", 4645 DEVNAME(sc)); 4646} 4647 4648void 4649sr_rebuild_thread(void *arg) 4650{ 4651 struct sr_discipline *sd = arg; 4652 4653 DNPRINTF(SR_D_REBUILD, "%s: %s rebuild thread started\n", 4654 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname); 4655 4656 sd->sd_reb_active = 1; 4657 sd->sd_rebuild(sd); 4658 sd->sd_reb_active = 0; 4659 4660 kthread_exit(0); 4661} 4662 4663void 4664sr_rebuild(struct sr_discipline *sd) 4665{ 4666 struct sr_softc *sc = sd->sd_sc; 4667 u_int64_t sz, whole_blk, partial_blk, blk, restart; 4668 daddr_t lba; 4669 struct sr_workunit *wu_r, *wu_w; 4670 struct scsi_xfer xs_r, xs_w; 4671 struct scsi_rw_16 *cr, *cw; 4672 int c, s, slept, percent = 0, old_percent = -1; 4673 u_int8_t *buf; 4674 4675 whole_blk = sd->sd_meta->ssdi.ssd_size / SR_REBUILD_IO_SIZE; 4676 partial_blk = sd->sd_meta->ssdi.ssd_size % SR_REBUILD_IO_SIZE; 4677 4678 restart = sd->sd_meta->ssd_rebuild / SR_REBUILD_IO_SIZE; 4679 if (restart > whole_blk) { 4680 printf("%s: bogus rebuild restart offset, starting from 0\n", 4681 DEVNAME(sc)); 4682 restart = 0; 4683 } 4684 if (restart) { 4685 /* 4686 * XXX there is a hole here; there is a possibility that we 4687 * had a restart however the chunk that was supposed to 4688 * be rebuilt is no longer valid; we can reach this situation 4689 * when a rebuild is in progress and the box crashes and 4690 * on reboot the rebuild chunk is different (like zero'd or 4691 * replaced). We need to check the uuid of the chunk that is 4692 * being rebuilt to assert this. 4693 */ 4694 percent = sr_rebuild_percent(sd); 4695 printf("%s: resuming rebuild on %s at %d%%\n", 4696 DEVNAME(sc), sd->sd_meta->ssd_devname, percent); 4697 } 4698 4699 /* currently this is 64k therefore we can use dma_alloc */ 4700 buf = dma_alloc(SR_REBUILD_IO_SIZE << DEV_BSHIFT, PR_WAITOK); 4701 for (blk = restart; blk <= whole_blk; blk++) { 4702 lba = blk * SR_REBUILD_IO_SIZE; 4703 sz = SR_REBUILD_IO_SIZE; 4704 if (blk == whole_blk) { 4705 if (partial_blk == 0) 4706 break; 4707 sz = partial_blk; 4708 } 4709 4710 /* get some wu */ 4711 wu_r = sr_scsi_wu_get(sd, 0); 4712 wu_w = sr_scsi_wu_get(sd, 0); 4713 4714 DNPRINTF(SR_D_REBUILD, "%s: %s rebuild wu_r %p, wu_w %p\n", 4715 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname, wu_r, wu_w); 4716 4717 /* setup read io */ 4718 bzero(&xs_r, sizeof xs_r); 4719 xs_r.error = XS_NOERROR; 4720 xs_r.flags = SCSI_DATA_IN; 4721 xs_r.datalen = sz << DEV_BSHIFT; 4722 xs_r.data = buf; 4723 xs_r.cmdlen = sizeof(*cr); 4724 cr = (struct scsi_rw_16 *)&xs_r.cmd; 4725 cr->opcode = READ_16; 4726 _lto4b(sz, cr->length); 4727 _lto8b(lba, cr->addr); 4728 wu_r->swu_state = SR_WU_CONSTRUCT; 4729 wu_r->swu_flags |= SR_WUF_REBUILD; 4730 wu_r->swu_xs = &xs_r; 4731 if (sd->sd_scsi_rw(wu_r)) { 4732 printf("%s: could not create read io\n", 4733 DEVNAME(sc)); 4734 goto fail; 4735 } 4736 4737 /* setup write io */ 4738 bzero(&xs_w, sizeof xs_w); 4739 xs_w.error = XS_NOERROR; 4740 xs_w.flags = SCSI_DATA_OUT; 4741 xs_w.datalen = sz << DEV_BSHIFT; 4742 xs_w.data = buf; 4743 xs_w.cmdlen = sizeof(*cw); 4744 cw = (struct scsi_rw_16 *)&xs_w.cmd; 4745 cw->opcode = WRITE_16; 4746 _lto4b(sz, cw->length); 4747 _lto8b(lba, cw->addr); 4748 wu_w->swu_state = SR_WU_CONSTRUCT; 4749 wu_w->swu_flags |= SR_WUF_REBUILD | SR_WUF_WAKEUP; 4750 wu_w->swu_xs = &xs_w; 4751 if (sd->sd_scsi_rw(wu_w)) { 4752 printf("%s: could not create write io\n", 4753 DEVNAME(sc)); 4754 goto fail; 4755 } 4756 4757 /* 4758 * collide with the read io so that we get automatically 4759 * started when the read is done 4760 */ 4761 wu_w->swu_state = SR_WU_DEFERRED; 4762 wu_r->swu_collider = wu_w; 4763 s = splbio(); 4764 TAILQ_INSERT_TAIL(&sd->sd_wu_defq, wu_w, swu_link); 4765 splx(s); 4766 4767 DNPRINTF(SR_D_REBUILD, "%s: %s rebuild scheduling wu_r %p\n", 4768 DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname, wu_r); 4769 4770 wu_r->swu_state = SR_WU_INPROGRESS; 4771 sr_schedule_wu(wu_r); 4772 4773 /* wait for write completion */ 4774 slept = 0; 4775 while ((wu_w->swu_flags & SR_WUF_REBUILDIOCOMP) == 0) { 4776 tsleep_nsec(wu_w, PRIBIO, "sr_rebuild", INFSLP); 4777 slept = 1; 4778 } 4779 /* yield if we didn't sleep */ 4780 if (slept == 0) 4781 tsleep_nsec(sc, PWAIT, "sr_yield", MSEC_TO_NSEC(1)); 4782 4783 sr_scsi_wu_put(sd, wu_r); 4784 sr_scsi_wu_put(sd, wu_w); 4785 4786 sd->sd_meta->ssd_rebuild = lba; 4787 4788 /* XXX - this should be based on size, not percentage. */ 4789 /* save metadata every percent */ 4790 percent = sr_rebuild_percent(sd); 4791 if (percent != old_percent && blk != whole_blk) { 4792 if (sr_meta_save(sd, SR_META_DIRTY)) 4793 printf("%s: could not save metadata to %s\n", 4794 DEVNAME(sc), sd->sd_meta->ssd_devname); 4795 old_percent = percent; 4796 } 4797 4798 if (sd->sd_reb_abort) 4799 goto abort; 4800 } 4801 4802 /* all done */ 4803 sd->sd_meta->ssd_rebuild = 0; 4804 for (c = 0; c < sd->sd_meta->ssdi.ssd_chunk_no; c++) { 4805 if (sd->sd_vol.sv_chunks[c]->src_meta.scm_status == 4806 BIOC_SDREBUILD) { 4807 sd->sd_set_chunk_state(sd, c, BIOC_SDONLINE); 4808 break; 4809 } 4810 } 4811 4812abort: 4813 if (sr_meta_save(sd, SR_META_DIRTY)) 4814 printf("%s: could not save metadata to %s\n", 4815 DEVNAME(sc), sd->sd_meta->ssd_devname); 4816fail: 4817 dma_free(buf, SR_REBUILD_IO_SIZE << DEV_BSHIFT); 4818} 4819 4820struct sr_discipline * 4821sr_find_discipline(struct sr_softc *sc, const char *devname) 4822{ 4823 struct sr_discipline *sd; 4824 4825 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) 4826 if (!strncmp(sd->sd_meta->ssd_devname, devname, 4827 sizeof(sd->sd_meta->ssd_devname))) 4828 break; 4829 return sd; 4830} 4831 4832#ifndef SMALL_KERNEL 4833int 4834sr_sensors_create(struct sr_discipline *sd) 4835{ 4836 struct sr_softc *sc = sd->sd_sc; 4837 int rv = 1; 4838 4839 DNPRINTF(SR_D_STATE, "%s: %s: sr_sensors_create\n", 4840 DEVNAME(sc), sd->sd_meta->ssd_devname); 4841 4842 sd->sd_vol.sv_sensor.type = SENSOR_DRIVE; 4843 sd->sd_vol.sv_sensor.status = SENSOR_S_UNKNOWN; 4844 strlcpy(sd->sd_vol.sv_sensor.desc, sd->sd_meta->ssd_devname, 4845 sizeof(sd->sd_vol.sv_sensor.desc)); 4846 4847 sensor_attach(&sc->sc_sensordev, &sd->sd_vol.sv_sensor); 4848 sd->sd_vol.sv_sensor_attached = 1; 4849 4850 if (sc->sc_sensor_task == NULL) { 4851 sc->sc_sensor_task = sensor_task_register(sc, 4852 sr_sensors_refresh, 10); 4853 if (sc->sc_sensor_task == NULL) 4854 goto bad; 4855 } 4856 4857 rv = 0; 4858bad: 4859 return (rv); 4860} 4861 4862void 4863sr_sensors_delete(struct sr_discipline *sd) 4864{ 4865 DNPRINTF(SR_D_STATE, "%s: sr_sensors_delete\n", DEVNAME(sd->sd_sc)); 4866 4867 if (sd->sd_vol.sv_sensor_attached) 4868 sensor_detach(&sd->sd_sc->sc_sensordev, &sd->sd_vol.sv_sensor); 4869} 4870 4871void 4872sr_sensors_refresh(void *arg) 4873{ 4874 struct sr_softc *sc = arg; 4875 struct sr_volume *sv; 4876 struct sr_discipline *sd; 4877 4878 DNPRINTF(SR_D_STATE, "%s: sr_sensors_refresh\n", DEVNAME(sc)); 4879 4880 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) { 4881 sv = &sd->sd_vol; 4882 4883 switch(sd->sd_vol_status) { 4884 case BIOC_SVOFFLINE: 4885 sv->sv_sensor.value = SENSOR_DRIVE_FAIL; 4886 sv->sv_sensor.status = SENSOR_S_CRIT; 4887 break; 4888 4889 case BIOC_SVDEGRADED: 4890 sv->sv_sensor.value = SENSOR_DRIVE_PFAIL; 4891 sv->sv_sensor.status = SENSOR_S_WARN; 4892 break; 4893 4894 case BIOC_SVREBUILD: 4895 sv->sv_sensor.value = SENSOR_DRIVE_REBUILD; 4896 sv->sv_sensor.status = SENSOR_S_WARN; 4897 break; 4898 4899 case BIOC_SVSCRUB: 4900 case BIOC_SVONLINE: 4901 sv->sv_sensor.value = SENSOR_DRIVE_ONLINE; 4902 sv->sv_sensor.status = SENSOR_S_OK; 4903 break; 4904 4905 default: 4906 sv->sv_sensor.value = 0; /* unknown */ 4907 sv->sv_sensor.status = SENSOR_S_UNKNOWN; 4908 } 4909 } 4910} 4911#endif /* SMALL_KERNEL */ 4912 4913#ifdef SR_FANCY_STATS 4914void sr_print_stats(void); 4915 4916void 4917sr_print_stats(void) 4918{ 4919 struct sr_softc *sc = softraid0; 4920 struct sr_discipline *sd; 4921 4922 if (sc == NULL) { 4923 printf("no softraid softc found\n"); 4924 return; 4925 } 4926 4927 TAILQ_FOREACH(sd, &sc->sc_dis_list, sd_link) { 4928 printf("%s: ios pending %d, collisions %llu\n", 4929 sd->sd_meta->ssd_devname, 4930 sd->sd_wu_pending, 4931 sd->sd_wu_collisions); 4932 } 4933} 4934#endif /* SR_FANCY_STATS */ 4935 4936#ifdef SR_DEBUG 4937void 4938sr_meta_print(struct sr_metadata *m) 4939{ 4940 int i; 4941 struct sr_meta_chunk *mc; 4942 struct sr_meta_opt_hdr *omh; 4943 4944 if (!(sr_debug & SR_D_META)) 4945 return; 4946 4947 printf("\tssd_magic 0x%llx\n", m->ssdi.ssd_magic); 4948 printf("\tssd_version %d\n", m->ssdi.ssd_version); 4949 printf("\tssd_vol_flags 0x%x\n", m->ssdi.ssd_vol_flags); 4950 printf("\tssd_uuid "); 4951 sr_uuid_print(&m->ssdi.ssd_uuid, 1); 4952 printf("\tssd_chunk_no %d\n", m->ssdi.ssd_chunk_no); 4953 printf("\tssd_chunk_id %d\n", m->ssdi.ssd_chunk_id); 4954 printf("\tssd_opt_no %d\n", m->ssdi.ssd_opt_no); 4955 printf("\tssd_volid %d\n", m->ssdi.ssd_volid); 4956 printf("\tssd_level %d\n", m->ssdi.ssd_level); 4957 printf("\tssd_size %lld\n", m->ssdi.ssd_size); 4958 printf("\tssd_devname %s\n", m->ssd_devname); 4959 printf("\tssd_vendor %s\n", m->ssdi.ssd_vendor); 4960 printf("\tssd_product %s\n", m->ssdi.ssd_product); 4961 printf("\tssd_revision %s\n", m->ssdi.ssd_revision); 4962 printf("\tssd_strip_size %d\n", m->ssdi.ssd_strip_size); 4963 printf("\tssd_checksum "); 4964 sr_checksum_print(m->ssd_checksum); 4965 printf("\n"); 4966 printf("\tssd_meta_flags 0x%x\n", m->ssd_meta_flags); 4967 printf("\tssd_ondisk %llu\n", m->ssd_ondisk); 4968 4969 mc = (struct sr_meta_chunk *)(m + 1); 4970 for (i = 0; i < m->ssdi.ssd_chunk_no; i++, mc++) { 4971 printf("\t\tscm_volid %d\n", mc->scmi.scm_volid); 4972 printf("\t\tscm_chunk_id %d\n", mc->scmi.scm_chunk_id); 4973 printf("\t\tscm_devname %s\n", mc->scmi.scm_devname); 4974 printf("\t\tscm_size %lld\n", mc->scmi.scm_size); 4975 printf("\t\tscm_coerced_size %lld\n",mc->scmi.scm_coerced_size); 4976 printf("\t\tscm_uuid "); 4977 sr_uuid_print(&mc->scmi.scm_uuid, 1); 4978 printf("\t\tscm_checksum "); 4979 sr_checksum_print(mc->scm_checksum); 4980 printf("\n"); 4981 printf("\t\tscm_status %d\n", mc->scm_status); 4982 } 4983 4984 omh = (struct sr_meta_opt_hdr *)((u_int8_t *)(m + 1) + 4985 sizeof(struct sr_meta_chunk) * m->ssdi.ssd_chunk_no); 4986 for (i = 0; i < m->ssdi.ssd_opt_no; i++) { 4987 printf("\t\t\tsom_type %d\n", omh->som_type); 4988 printf("\t\t\tsom_checksum "); 4989 sr_checksum_print(omh->som_checksum); 4990 printf("\n"); 4991 omh = (struct sr_meta_opt_hdr *)((void *)omh + 4992 omh->som_length); 4993 } 4994} 4995 4996void 4997sr_dump_block(void *blk, int len) 4998{ 4999 uint8_t *b = blk; 5000 int i, j, c; 5001 5002 for (i = 0; i < len; i += 16) { 5003 for (j = 0; j < 16; j++) 5004 printf("%.2x ", b[i + j]); 5005 printf(" "); 5006 for (j = 0; j < 16; j++) { 5007 c = b[i + j]; 5008 if (c < ' ' || c > 'z' || i + j > len) 5009 c = '.'; 5010 printf("%c", c); 5011 } 5012 printf("\n"); 5013 } 5014} 5015 5016void 5017sr_dump_mem(u_int8_t *p, int len) 5018{ 5019 int i; 5020 5021 for (i = 0; i < len; i++) 5022 printf("%02x ", *p++); 5023 printf("\n"); 5024} 5025 5026#endif /* SR_DEBUG */ 5027 5028#ifdef HIBERNATE 5029/* 5030 * Side-effect free (no malloc, printf, pool, splx) softraid crypto writer. 5031 * 5032 * This function must perform the following: 5033 * 1. Determine the underlying device's own side-effect free I/O function 5034 * (eg, ahci_hibernate_io, wd_hibernate_io, etc). 5035 * 2. Store enough information in the provided page argument for subsequent 5036 * I/O calls (such as the crypto discipline structure for the keys, the 5037 * offset of the softraid partition on the underlying disk, as well as 5038 * the offset of the swap partition within the crypto volume. 5039 * 3. Encrypt the incoming data using the sr_discipline keys, then pass 5040 * the request to the underlying device's own I/O function. 5041 */ 5042int 5043sr_hibernate_io(dev_t dev, daddr_t blkno, vaddr_t addr, size_t size, int op, void *page) 5044{ 5045 /* Struct for stashing data obtained on HIB_INIT. 5046 * XXX 5047 * We share the page with the underlying device's own 5048 * side-effect free I/O function, so we pad our data to 5049 * the end of the page. Presently this does not overlap 5050 * with either of the two other side-effect free i/o 5051 * functions (ahci/wd). 5052 */ 5053 struct { 5054 char pad[3072]; 5055 struct sr_discipline *srd; 5056 hibio_fn subfn; /* underlying device i/o fn */ 5057 dev_t subdev; /* underlying device dev_t */ 5058 daddr_t sr_swapoff; /* ofs of swap part in sr volume */ 5059 char buf[DEV_BSIZE]; /* encryption performed into this buf */ 5060 } *my = page; 5061 extern struct cfdriver sd_cd; 5062 char errstr[128], *dl_ret; 5063 struct sr_chunk *schunk; 5064 struct sd_softc *sd; 5065 struct aes_xts_ctx ctx; 5066 struct sr_softc *sc; 5067 struct device *dv; 5068 daddr_t key_blkno; 5069 uint32_t sub_raidoff; /* ofs of sr part in underlying dev */ 5070 struct disklabel dl; 5071 struct partition *pp; 5072 size_t i, j; 5073 u_char iv[8]; 5074 5075 /* 5076 * In HIB_INIT, we are passed the swap partition size and offset 5077 * in 'size' and 'blkno' respectively. These are relative to the 5078 * start of the softraid partition, and we need to save these 5079 * for later translation to the underlying device's layout. 5080 */ 5081 if (op == HIB_INIT) { 5082 dv = disk_lookup(&sd_cd, DISKUNIT(dev)); 5083 sd = (struct sd_softc *)dv; 5084 sc = (struct sr_softc *)dv->dv_parent->dv_parent; 5085 5086 /* 5087 * Look up the sr discipline. This is used to determine 5088 * if we are SR crypto and what the underlying device is. 5089 */ 5090 my->srd = sc->sc_targets[sd->sc_link->target]; 5091 DNPRINTF(SR_D_MISC, "sr_hibernate_io: discipline is %s\n", 5092 my->srd->sd_name); 5093 if (strncmp(my->srd->sd_name, "CRYPTO", 5094 sizeof(my->srd->sd_name))) 5095 return (ENOTSUP); 5096 5097 /* Find the underlying device */ 5098 schunk = my->srd->sd_vol.sv_chunks[0]; 5099 my->subdev = schunk->src_dev_mm; 5100 5101 /* 5102 * Find the appropriate underlying device side effect free 5103 * I/O function, based on the type of device it is. 5104 */ 5105 my->subfn = get_hibernate_io_function(my->subdev); 5106 if (!my->subfn) 5107 return (ENODEV); 5108 5109 /* 5110 * Find blkno where this raid partition starts on 5111 * the underlying disk. 5112 */ 5113 dl_ret = disk_readlabel(&dl, my->subdev, errstr, 5114 sizeof(errstr)); 5115 if (dl_ret) { 5116 printf("Hibernate error reading disklabel: %s\n", dl_ret); 5117 return (ENOTSUP); 5118 } 5119 5120 pp = &dl.d_partitions[DISKPART(my->subdev)]; 5121 if (pp->p_fstype != FS_RAID || DL_GETPSIZE(pp) == 0) 5122 return (ENOTSUP); 5123 5124 /* Find the blkno of the SR part in the underlying device */ 5125 sub_raidoff = my->srd->sd_meta->ssd_data_blkno + 5126 DL_SECTOBLK(&dl, DL_GETPOFFSET(pp)); 5127 DNPRINTF(SR_D_MISC,"sr_hibernate_io: blk trans ofs: %d blks\n", 5128 sub_raidoff); 5129 5130 /* Save the blkno of the swap partition in the SR disk */ 5131 my->sr_swapoff = blkno; 5132 5133 /* Initialize the sub-device */ 5134 return my->subfn(my->subdev, sub_raidoff + blkno, 5135 addr, size, op, page); 5136 } 5137 5138 /* Hibernate only uses (and we only support) writes */ 5139 if (op != HIB_W) 5140 return (ENOTSUP); 5141 5142 /* 5143 * Blocks act as the IV for the encryption. These block numbers 5144 * are relative to the start of the sr partition, but the 'blkno' 5145 * passed above is relative to the start of the swap partition 5146 * inside the sr partition, so bias appropriately. 5147 */ 5148 key_blkno = my->sr_swapoff + blkno; 5149 5150 /* Process each disk block one at a time. */ 5151 for (i = 0; i < size; i += DEV_BSIZE) { 5152 int res; 5153 5154 bzero(&ctx, sizeof(ctx)); 5155 5156 /* 5157 * Set encryption key (from the sr discipline stashed 5158 * during HIB_INIT. This code is based on the softraid 5159 * bootblock code. 5160 */ 5161 aes_xts_setkey(&ctx, my->srd->mds.mdd_crypto.scr_key[0], 64); 5162 /* We encrypt DEV_BSIZE bytes at a time in my->buf */ 5163 memcpy(my->buf, ((char *)addr) + i, DEV_BSIZE); 5164 5165 /* Block number is the IV */ 5166 memcpy(&iv, &key_blkno, sizeof(key_blkno)); 5167 aes_xts_reinit(&ctx, iv); 5168 5169 /* Encrypt DEV_BSIZE bytes, AES_XTS_BLOCKSIZE bytes at a time */ 5170 for (j = 0; j < DEV_BSIZE; j += AES_XTS_BLOCKSIZE) 5171 aes_xts_encrypt(&ctx, my->buf + j); 5172 5173 /* 5174 * Write one block out from my->buf to the underlying device 5175 * using its own side-effect free I/O function. 5176 */ 5177 res = my->subfn(my->subdev, blkno + (i / DEV_BSIZE), 5178 (vaddr_t)(my->buf), DEV_BSIZE, op, page); 5179 if (res != 0) 5180 return (res); 5181 key_blkno++; 5182 } 5183 return (0); 5184} 5185#endif /* HIBERNATE */ 5186