geom_vinum.c revision 223921
1/*- 2 * Copyright (c) 2004, 2007 Lukas Ertl 3 * Copyright (c) 2007, 2009 Ulf Lilleengen 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: head/sys/geom/vinum/geom_vinum.c 223921 2011-07-11 05:22:31Z ae $"); 31 32#include <sys/param.h> 33#include <sys/bio.h> 34#include <sys/kernel.h> 35#include <sys/kthread.h> 36#include <sys/lock.h> 37#include <sys/malloc.h> 38#include <sys/module.h> 39#include <sys/mutex.h> 40#include <sys/sbuf.h> 41#include <sys/sysctl.h> 42#include <sys/systm.h> 43 44#include <geom/geom.h> 45#include <geom/vinum/geom_vinum_var.h> 46#include <geom/vinum/geom_vinum.h> 47#include <geom/vinum/geom_vinum_raid5.h> 48 49SYSCTL_DECL(_kern_geom); 50SYSCTL_NODE(_kern_geom, OID_AUTO, vinum, CTLFLAG_RW, 0, "GEOM_VINUM stuff"); 51u_int g_vinum_debug = 0; 52TUNABLE_INT("kern.geom.vinum.debug", &g_vinum_debug); 53SYSCTL_UINT(_kern_geom_vinum, OID_AUTO, debug, CTLFLAG_RW, &g_vinum_debug, 0, 54 "Debug level"); 55 56static int gv_create(struct g_geom *, struct gctl_req *); 57static void gv_attach(struct gv_softc *, struct gctl_req *); 58static void gv_detach(struct gv_softc *, struct gctl_req *); 59static void gv_parityop(struct gv_softc *, struct gctl_req *); 60 61 62static void 63gv_orphan(struct g_consumer *cp) 64{ 65 struct g_geom *gp; 66 struct gv_softc *sc; 67 struct gv_drive *d; 68 69 g_topology_assert(); 70 71 KASSERT(cp != NULL, ("gv_orphan: null cp")); 72 gp = cp->geom; 73 KASSERT(gp != NULL, ("gv_orphan: null gp")); 74 sc = gp->softc; 75 KASSERT(sc != NULL, ("gv_orphan: null sc")); 76 d = cp->private; 77 KASSERT(d != NULL, ("gv_orphan: null d")); 78 79 g_trace(G_T_TOPOLOGY, "gv_orphan(%s)", gp->name); 80 81 gv_post_event(sc, GV_EVENT_DRIVE_LOST, d, NULL, 0, 0); 82} 83 84void 85gv_start(struct bio *bp) 86{ 87 struct g_geom *gp; 88 struct gv_softc *sc; 89 90 gp = bp->bio_to->geom; 91 sc = gp->softc; 92 93 switch (bp->bio_cmd) { 94 case BIO_READ: 95 case BIO_WRITE: 96 case BIO_DELETE: 97 break; 98 case BIO_GETATTR: 99 default: 100 g_io_deliver(bp, EOPNOTSUPP); 101 return; 102 } 103 mtx_lock(&sc->bqueue_mtx); 104 bioq_disksort(sc->bqueue_down, bp); 105 wakeup(sc); 106 mtx_unlock(&sc->bqueue_mtx); 107} 108 109void 110gv_done(struct bio *bp) 111{ 112 struct g_geom *gp; 113 struct gv_softc *sc; 114 115 KASSERT(bp != NULL, ("NULL bp")); 116 117 gp = bp->bio_from->geom; 118 sc = gp->softc; 119 120 mtx_lock(&sc->bqueue_mtx); 121 bioq_disksort(sc->bqueue_up, bp); 122 wakeup(sc); 123 mtx_unlock(&sc->bqueue_mtx); 124} 125 126int 127gv_access(struct g_provider *pp, int dr, int dw, int de) 128{ 129 struct g_geom *gp; 130 struct gv_softc *sc; 131 struct gv_drive *d, *d2; 132 int error; 133 134 gp = pp->geom; 135 sc = gp->softc; 136 /* 137 * We want to modify the read count with the write count in case we have 138 * plexes in a RAID-5 organization. 139 */ 140 dr += dw; 141 142 LIST_FOREACH(d, &sc->drives, drive) { 143 if (d->consumer == NULL) 144 continue; 145 error = g_access(d->consumer, dr, dw, de); 146 if (error) { 147 LIST_FOREACH(d2, &sc->drives, drive) { 148 if (d == d2) 149 break; 150 g_access(d2->consumer, -dr, -dw, -de); 151 } 152 G_VINUM_DEBUG(0, "g_access '%s' failed: %d", d->name, 153 error); 154 return (error); 155 } 156 } 157 return (0); 158} 159 160static void 161gv_init(struct g_class *mp) 162{ 163 struct g_geom *gp; 164 struct gv_softc *sc; 165 166 g_trace(G_T_TOPOLOGY, "gv_init(%p)", mp); 167 168 gp = g_new_geomf(mp, "VINUM"); 169 gp->spoiled = gv_orphan; 170 gp->orphan = gv_orphan; 171 gp->access = gv_access; 172 gp->start = gv_start; 173 gp->softc = g_malloc(sizeof(struct gv_softc), M_WAITOK | M_ZERO); 174 sc = gp->softc; 175 sc->geom = gp; 176 sc->bqueue_down = g_malloc(sizeof(struct bio_queue_head), 177 M_WAITOK | M_ZERO); 178 sc->bqueue_up = g_malloc(sizeof(struct bio_queue_head), 179 M_WAITOK | M_ZERO); 180 bioq_init(sc->bqueue_down); 181 bioq_init(sc->bqueue_up); 182 LIST_INIT(&sc->drives); 183 LIST_INIT(&sc->subdisks); 184 LIST_INIT(&sc->plexes); 185 LIST_INIT(&sc->volumes); 186 TAILQ_INIT(&sc->equeue); 187 mtx_init(&sc->config_mtx, "gv_config", NULL, MTX_DEF); 188 mtx_init(&sc->equeue_mtx, "gv_equeue", NULL, MTX_DEF); 189 mtx_init(&sc->bqueue_mtx, "gv_bqueue", NULL, MTX_DEF); 190 kproc_create(gv_worker, sc, &sc->worker, 0, 0, "gv_worker"); 191} 192 193static int 194gv_unload(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 195{ 196 struct gv_softc *sc; 197 198 g_trace(G_T_TOPOLOGY, "gv_unload(%p)", mp); 199 200 g_topology_assert(); 201 sc = gp->softc; 202 203 if (sc != NULL) { 204 gv_worker_exit(sc); 205 gp->softc = NULL; 206 g_wither_geom(gp, ENXIO); 207 } 208 209 return (0); 210} 211 212/* Handle userland request of attaching object. */ 213static void 214gv_attach(struct gv_softc *sc, struct gctl_req *req) 215{ 216 struct gv_volume *v; 217 struct gv_plex *p; 218 struct gv_sd *s; 219 off_t *offset; 220 int *rename, type_child, type_parent; 221 char *child, *parent; 222 223 child = gctl_get_param(req, "child", NULL); 224 if (child == NULL) { 225 gctl_error(req, "no child given"); 226 return; 227 } 228 parent = gctl_get_param(req, "parent", NULL); 229 if (parent == NULL) { 230 gctl_error(req, "no parent given"); 231 return; 232 } 233 offset = gctl_get_paraml(req, "offset", sizeof(*offset)); 234 if (offset == NULL) { 235 gctl_error(req, "no offset given"); 236 return; 237 } 238 rename = gctl_get_paraml(req, "rename", sizeof(*rename)); 239 if (rename == NULL) { 240 gctl_error(req, "no rename flag given"); 241 return; 242 } 243 244 type_child = gv_object_type(sc, child); 245 type_parent = gv_object_type(sc, parent); 246 247 switch (type_child) { 248 case GV_TYPE_PLEX: 249 if (type_parent != GV_TYPE_VOL) { 250 gctl_error(req, "no such volume to attach to"); 251 return; 252 } 253 v = gv_find_vol(sc, parent); 254 p = gv_find_plex(sc, child); 255 gv_post_event(sc, GV_EVENT_ATTACH_PLEX, p, v, *offset, *rename); 256 break; 257 case GV_TYPE_SD: 258 if (type_parent != GV_TYPE_PLEX) { 259 gctl_error(req, "no such plex to attach to"); 260 return; 261 } 262 p = gv_find_plex(sc, parent); 263 s = gv_find_sd(sc, child); 264 gv_post_event(sc, GV_EVENT_ATTACH_SD, s, p, *offset, *rename); 265 break; 266 default: 267 gctl_error(req, "invalid child type"); 268 break; 269 } 270} 271 272/* Handle userland request of detaching object. */ 273static void 274gv_detach(struct gv_softc *sc, struct gctl_req *req) 275{ 276 struct gv_plex *p; 277 struct gv_sd *s; 278 int *flags, type; 279 char *object; 280 281 object = gctl_get_param(req, "object", NULL); 282 if (object == NULL) { 283 gctl_error(req, "no argument given"); 284 return; 285 } 286 287 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 288 type = gv_object_type(sc, object); 289 switch (type) { 290 case GV_TYPE_PLEX: 291 p = gv_find_plex(sc, object); 292 gv_post_event(sc, GV_EVENT_DETACH_PLEX, p, NULL, *flags, 0); 293 break; 294 case GV_TYPE_SD: 295 s = gv_find_sd(sc, object); 296 gv_post_event(sc, GV_EVENT_DETACH_SD, s, NULL, *flags, 0); 297 break; 298 default: 299 gctl_error(req, "invalid object type"); 300 break; 301 } 302} 303 304/* Handle userland requests for creating new objects. */ 305static int 306gv_create(struct g_geom *gp, struct gctl_req *req) 307{ 308 struct gv_softc *sc; 309 struct gv_drive *d, *d2; 310 struct gv_plex *p, *p2; 311 struct gv_sd *s, *s2; 312 struct gv_volume *v, *v2; 313 struct g_provider *pp; 314 int error, i, *drives, *flags, *plexes, *subdisks, *volumes; 315 char buf[20]; 316 317 g_topology_assert(); 318 319 sc = gp->softc; 320 321 /* Find out how many of each object have been passed in. */ 322 volumes = gctl_get_paraml(req, "volumes", sizeof(*volumes)); 323 plexes = gctl_get_paraml(req, "plexes", sizeof(*plexes)); 324 subdisks = gctl_get_paraml(req, "subdisks", sizeof(*subdisks)); 325 drives = gctl_get_paraml(req, "drives", sizeof(*drives)); 326 if (volumes == NULL || plexes == NULL || subdisks == NULL || 327 drives == NULL) { 328 gctl_error(req, "number of objects not given"); 329 return (-1); 330 } 331 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 332 if (flags == NULL) { 333 gctl_error(req, "flags not given"); 334 return (-1); 335 } 336 337 /* First, handle drive definitions ... */ 338 for (i = 0; i < *drives; i++) { 339 snprintf(buf, sizeof(buf), "drive%d", i); 340 d2 = gctl_get_paraml(req, buf, sizeof(*d2)); 341 if (d2 == NULL) { 342 gctl_error(req, "no drive definition given"); 343 return (-1); 344 } 345 /* 346 * Make sure that the device specified in the drive config is 347 * an active GEOM provider. 348 */ 349 pp = g_provider_by_name(d2->device); 350 if (pp == NULL) { 351 gctl_error(req, "%s: device not found", d2->device); 352 goto error; 353 } 354 if (gv_find_drive(sc, d2->name) != NULL) { 355 /* Ignore error. */ 356 if (*flags & GV_FLAG_F) 357 continue; 358 gctl_error(req, "drive '%s' already exists", d2->name); 359 goto error; 360 } 361 if (gv_find_drive_device(sc, d2->device) != NULL) { 362 gctl_error(req, "device '%s' already configured in " 363 "gvinum", d2->device); 364 goto error; 365 } 366 367 368 d = g_malloc(sizeof(*d), M_WAITOK | M_ZERO); 369 bcopy(d2, d, sizeof(*d)); 370 371 gv_post_event(sc, GV_EVENT_CREATE_DRIVE, d, NULL, 0, 0); 372 } 373 374 /* ... then volume definitions ... */ 375 for (i = 0; i < *volumes; i++) { 376 error = 0; 377 snprintf(buf, sizeof(buf), "volume%d", i); 378 v2 = gctl_get_paraml(req, buf, sizeof(*v2)); 379 if (v2 == NULL) { 380 gctl_error(req, "no volume definition given"); 381 return (-1); 382 } 383 if (gv_find_vol(sc, v2->name) != NULL) { 384 /* Ignore error. */ 385 if (*flags & GV_FLAG_F) 386 continue; 387 gctl_error(req, "volume '%s' already exists", v2->name); 388 goto error; 389 } 390 391 v = g_malloc(sizeof(*v), M_WAITOK | M_ZERO); 392 bcopy(v2, v, sizeof(*v)); 393 394 gv_post_event(sc, GV_EVENT_CREATE_VOLUME, v, NULL, 0, 0); 395 } 396 397 /* ... then plex definitions ... */ 398 for (i = 0; i < *plexes; i++) { 399 error = 0; 400 snprintf(buf, sizeof(buf), "plex%d", i); 401 p2 = gctl_get_paraml(req, buf, sizeof(*p2)); 402 if (p2 == NULL) { 403 gctl_error(req, "no plex definition given"); 404 return (-1); 405 } 406 if (gv_find_plex(sc, p2->name) != NULL) { 407 /* Ignore error. */ 408 if (*flags & GV_FLAG_F) 409 continue; 410 gctl_error(req, "plex '%s' already exists", p2->name); 411 goto error; 412 } 413 414 p = g_malloc(sizeof(*p), M_WAITOK | M_ZERO); 415 bcopy(p2, p, sizeof(*p)); 416 417 gv_post_event(sc, GV_EVENT_CREATE_PLEX, p, NULL, 0, 0); 418 } 419 420 /* ... and, finally, subdisk definitions. */ 421 for (i = 0; i < *subdisks; i++) { 422 error = 0; 423 snprintf(buf, sizeof(buf), "sd%d", i); 424 s2 = gctl_get_paraml(req, buf, sizeof(*s2)); 425 if (s2 == NULL) { 426 gctl_error(req, "no subdisk definition given"); 427 return (-1); 428 } 429 if (gv_find_sd(sc, s2->name) != NULL) { 430 /* Ignore error. */ 431 if (*flags & GV_FLAG_F) 432 continue; 433 gctl_error(req, "sd '%s' already exists", s2->name); 434 goto error; 435 } 436 437 s = g_malloc(sizeof(*s), M_WAITOK | M_ZERO); 438 bcopy(s2, s, sizeof(*s)); 439 440 gv_post_event(sc, GV_EVENT_CREATE_SD, s, NULL, 0, 0); 441 } 442 443error: 444 gv_post_event(sc, GV_EVENT_SETUP_OBJECTS, sc, NULL, 0, 0); 445 gv_post_event(sc, GV_EVENT_SAVE_CONFIG, sc, NULL, 0, 0); 446 447 return (0); 448} 449 450static void 451gv_config(struct gctl_req *req, struct g_class *mp, char const *verb) 452{ 453 struct g_geom *gp; 454 struct gv_softc *sc; 455 struct sbuf *sb; 456 char *comment; 457 458 g_topology_assert(); 459 460 gp = LIST_FIRST(&mp->geom); 461 sc = gp->softc; 462 463 if (!strcmp(verb, "attach")) { 464 gv_attach(sc, req); 465 466 } else if (!strcmp(verb, "concat")) { 467 gv_concat(gp, req); 468 469 } else if (!strcmp(verb, "detach")) { 470 gv_detach(sc, req); 471 472 } else if (!strcmp(verb, "list")) { 473 gv_list(gp, req); 474 475 /* Save our configuration back to disk. */ 476 } else if (!strcmp(verb, "saveconfig")) { 477 gv_post_event(sc, GV_EVENT_SAVE_CONFIG, sc, NULL, 0, 0); 478 479 /* Return configuration in string form. */ 480 } else if (!strcmp(verb, "getconfig")) { 481 comment = gctl_get_param(req, "comment", NULL); 482 if (comment == NULL) { 483 gctl_error(req, "no comment parameter given"); 484 return; 485 } 486 sb = sbuf_new(NULL, NULL, GV_CFG_LEN, SBUF_FIXEDLEN); 487 gv_format_config(sc, sb, 0, comment); 488 sbuf_finish(sb); 489 gctl_set_param(req, "config", sbuf_data(sb), sbuf_len(sb) + 1); 490 sbuf_delete(sb); 491 492 } else if (!strcmp(verb, "create")) { 493 gv_create(gp, req); 494 495 } else if (!strcmp(verb, "mirror")) { 496 gv_mirror(gp, req); 497 498 } else if (!strcmp(verb, "move")) { 499 gv_move(gp, req); 500 501 } else if (!strcmp(verb, "raid5")) { 502 gv_raid5(gp, req); 503 504 } else if (!strcmp(verb, "rebuildparity") || 505 !strcmp(verb, "checkparity")) { 506 gv_parityop(sc, req); 507 508 } else if (!strcmp(verb, "remove")) { 509 gv_remove(gp, req); 510 511 } else if (!strcmp(verb, "rename")) { 512 gv_rename(gp, req); 513 514 } else if (!strcmp(verb, "resetconfig")) { 515 gv_post_event(sc, GV_EVENT_RESET_CONFIG, sc, NULL, 0, 0); 516 517 } else if (!strcmp(verb, "start")) { 518 gv_start_obj(gp, req); 519 520 } else if (!strcmp(verb, "stripe")) { 521 gv_stripe(gp, req); 522 523 } else if (!strcmp(verb, "setstate")) { 524 gv_setstate(gp, req); 525 } else 526 gctl_error(req, "Unknown verb parameter"); 527} 528 529static void 530gv_parityop(struct gv_softc *sc, struct gctl_req *req) 531{ 532 struct gv_plex *p; 533 int *flags, *rebuild, type; 534 char *plex; 535 536 plex = gctl_get_param(req, "plex", NULL); 537 if (plex == NULL) { 538 gctl_error(req, "no plex given"); 539 return; 540 } 541 542 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 543 if (flags == NULL) { 544 gctl_error(req, "no flags given"); 545 return; 546 } 547 548 rebuild = gctl_get_paraml(req, "rebuild", sizeof(*rebuild)); 549 if (rebuild == NULL) { 550 gctl_error(req, "no operation given"); 551 return; 552 } 553 554 type = gv_object_type(sc, plex); 555 if (type != GV_TYPE_PLEX) { 556 gctl_error(req, "'%s' is not a plex", plex); 557 return; 558 } 559 p = gv_find_plex(sc, plex); 560 561 if (p->state != GV_PLEX_UP) { 562 gctl_error(req, "plex %s is not completely accessible", 563 p->name); 564 return; 565 } 566 567 if (p->org != GV_PLEX_RAID5) { 568 gctl_error(req, "plex %s is not a RAID5 plex", p->name); 569 return; 570 } 571 572 /* Put it in the event queue. */ 573 /* XXX: The state of the plex might have changed when this event is 574 * picked up ... We should perhaps check this afterwards. */ 575 if (*rebuild) 576 gv_post_event(sc, GV_EVENT_PARITY_REBUILD, p, NULL, 0, 0); 577 else 578 gv_post_event(sc, GV_EVENT_PARITY_CHECK, p, NULL, 0, 0); 579} 580 581 582static struct g_geom * 583gv_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 584{ 585 struct g_geom *gp; 586 struct g_consumer *cp; 587 struct gv_softc *sc; 588 struct gv_hdr vhdr; 589 int error; 590 591 g_topology_assert(); 592 g_trace(G_T_TOPOLOGY, "gv_taste(%s, %s)", mp->name, pp->name); 593 594 gp = LIST_FIRST(&mp->geom); 595 if (gp == NULL) { 596 G_VINUM_DEBUG(0, "error: tasting, but not initialized?"); 597 return (NULL); 598 } 599 sc = gp->softc; 600 601 cp = g_new_consumer(gp); 602 if (g_attach(cp, pp) != 0) { 603 g_destroy_consumer(cp); 604 return (NULL); 605 } 606 if (g_access(cp, 1, 0, 0) != 0) { 607 g_detach(cp); 608 g_destroy_consumer(cp); 609 return (NULL); 610 } 611 g_topology_unlock(); 612 613 error = gv_read_header(cp, &vhdr); 614 615 g_topology_lock(); 616 g_access(cp, -1, 0, 0); 617 g_detach(cp); 618 g_destroy_consumer(cp); 619 620 /* Check if what we've been given is a valid vinum drive. */ 621 if (!error) 622 gv_post_event(sc, GV_EVENT_DRIVE_TASTED, pp, NULL, 0, 0); 623 624 return (NULL); 625} 626 627void 628gv_worker(void *arg) 629{ 630 struct g_provider *pp; 631 struct gv_softc *sc; 632 struct gv_event *ev; 633 struct gv_volume *v; 634 struct gv_plex *p; 635 struct gv_sd *s; 636 struct gv_drive *d; 637 struct bio *bp; 638 int newstate, flags, err, rename; 639 char *newname; 640 off_t offset; 641 642 sc = arg; 643 KASSERT(sc != NULL, ("NULL sc")); 644 for (;;) { 645 /* Look at the events first... */ 646 ev = gv_get_event(sc); 647 if (ev != NULL) { 648 gv_remove_event(sc, ev); 649 650 switch (ev->type) { 651 case GV_EVENT_DRIVE_TASTED: 652 G_VINUM_DEBUG(2, "event 'drive tasted'"); 653 pp = ev->arg1; 654 gv_drive_tasted(sc, pp); 655 break; 656 657 case GV_EVENT_DRIVE_LOST: 658 G_VINUM_DEBUG(2, "event 'drive lost'"); 659 d = ev->arg1; 660 gv_drive_lost(sc, d); 661 break; 662 663 case GV_EVENT_CREATE_DRIVE: 664 G_VINUM_DEBUG(2, "event 'create drive'"); 665 d = ev->arg1; 666 gv_create_drive(sc, d); 667 break; 668 669 case GV_EVENT_CREATE_VOLUME: 670 G_VINUM_DEBUG(2, "event 'create volume'"); 671 v = ev->arg1; 672 gv_create_volume(sc, v); 673 break; 674 675 case GV_EVENT_CREATE_PLEX: 676 G_VINUM_DEBUG(2, "event 'create plex'"); 677 p = ev->arg1; 678 gv_create_plex(sc, p); 679 break; 680 681 case GV_EVENT_CREATE_SD: 682 G_VINUM_DEBUG(2, "event 'create sd'"); 683 s = ev->arg1; 684 gv_create_sd(sc, s); 685 break; 686 687 case GV_EVENT_RM_DRIVE: 688 G_VINUM_DEBUG(2, "event 'remove drive'"); 689 d = ev->arg1; 690 flags = ev->arg3; 691 gv_rm_drive(sc, d, flags); 692 /*gv_setup_objects(sc);*/ 693 break; 694 695 case GV_EVENT_RM_VOLUME: 696 G_VINUM_DEBUG(2, "event 'remove volume'"); 697 v = ev->arg1; 698 gv_rm_vol(sc, v); 699 /*gv_setup_objects(sc);*/ 700 break; 701 702 case GV_EVENT_RM_PLEX: 703 G_VINUM_DEBUG(2, "event 'remove plex'"); 704 p = ev->arg1; 705 gv_rm_plex(sc, p); 706 /*gv_setup_objects(sc);*/ 707 break; 708 709 case GV_EVENT_RM_SD: 710 G_VINUM_DEBUG(2, "event 'remove sd'"); 711 s = ev->arg1; 712 gv_rm_sd(sc, s); 713 /*gv_setup_objects(sc);*/ 714 break; 715 716 case GV_EVENT_SAVE_CONFIG: 717 G_VINUM_DEBUG(2, "event 'save config'"); 718 gv_save_config(sc); 719 break; 720 721 case GV_EVENT_SET_SD_STATE: 722 G_VINUM_DEBUG(2, "event 'setstate sd'"); 723 s = ev->arg1; 724 newstate = ev->arg3; 725 flags = ev->arg4; 726 err = gv_set_sd_state(s, newstate, flags); 727 if (err) 728 G_VINUM_DEBUG(0, "error setting subdisk" 729 " state: error code %d", err); 730 break; 731 732 case GV_EVENT_SET_DRIVE_STATE: 733 G_VINUM_DEBUG(2, "event 'setstate drive'"); 734 d = ev->arg1; 735 newstate = ev->arg3; 736 flags = ev->arg4; 737 err = gv_set_drive_state(d, newstate, flags); 738 if (err) 739 G_VINUM_DEBUG(0, "error setting drive " 740 "state: error code %d", err); 741 break; 742 743 case GV_EVENT_SET_VOL_STATE: 744 G_VINUM_DEBUG(2, "event 'setstate volume'"); 745 v = ev->arg1; 746 newstate = ev->arg3; 747 flags = ev->arg4; 748 err = gv_set_vol_state(v, newstate, flags); 749 if (err) 750 G_VINUM_DEBUG(0, "error setting volume " 751 "state: error code %d", err); 752 break; 753 754 case GV_EVENT_SET_PLEX_STATE: 755 G_VINUM_DEBUG(2, "event 'setstate plex'"); 756 p = ev->arg1; 757 newstate = ev->arg3; 758 flags = ev->arg4; 759 err = gv_set_plex_state(p, newstate, flags); 760 if (err) 761 G_VINUM_DEBUG(0, "error setting plex " 762 "state: error code %d", err); 763 break; 764 765 case GV_EVENT_SETUP_OBJECTS: 766 G_VINUM_DEBUG(2, "event 'setup objects'"); 767 gv_setup_objects(sc); 768 break; 769 770 case GV_EVENT_RESET_CONFIG: 771 G_VINUM_DEBUG(2, "event 'resetconfig'"); 772 err = gv_resetconfig(sc); 773 if (err) 774 G_VINUM_DEBUG(0, "error resetting " 775 "config: error code %d", err); 776 break; 777 778 case GV_EVENT_PARITY_REBUILD: 779 /* 780 * Start the rebuild. The gv_plex_done will 781 * handle issuing of the remaining rebuild bio's 782 * until it's finished. 783 */ 784 G_VINUM_DEBUG(2, "event 'rebuild'"); 785 p = ev->arg1; 786 if (p->state != GV_PLEX_UP) { 787 G_VINUM_DEBUG(0, "plex %s is not " 788 "completely accessible", p->name); 789 break; 790 } 791 if (p->flags & GV_PLEX_SYNCING || 792 p->flags & GV_PLEX_REBUILDING || 793 p->flags & GV_PLEX_GROWING) { 794 G_VINUM_DEBUG(0, "plex %s is busy with " 795 "syncing or parity build", p->name); 796 break; 797 } 798 p->synced = 0; 799 p->flags |= GV_PLEX_REBUILDING; 800 g_topology_assert_not(); 801 g_topology_lock(); 802 err = gv_access(p->vol_sc->provider, 1, 1, 0); 803 if (err) { 804 G_VINUM_DEBUG(0, "unable to access " 805 "provider"); 806 break; 807 } 808 g_topology_unlock(); 809 gv_parity_request(p, GV_BIO_CHECK | 810 GV_BIO_PARITY, 0); 811 break; 812 813 case GV_EVENT_PARITY_CHECK: 814 /* Start parity check. */ 815 G_VINUM_DEBUG(2, "event 'check'"); 816 p = ev->arg1; 817 if (p->state != GV_PLEX_UP) { 818 G_VINUM_DEBUG(0, "plex %s is not " 819 "completely accessible", p->name); 820 break; 821 } 822 if (p->flags & GV_PLEX_SYNCING || 823 p->flags & GV_PLEX_REBUILDING || 824 p->flags & GV_PLEX_GROWING) { 825 G_VINUM_DEBUG(0, "plex %s is busy with " 826 "syncing or parity build", p->name); 827 break; 828 } 829 p->synced = 0; 830 g_topology_assert_not(); 831 g_topology_lock(); 832 err = gv_access(p->vol_sc->provider, 1, 1, 0); 833 if (err) { 834 G_VINUM_DEBUG(0, "unable to access " 835 "provider"); 836 break; 837 } 838 g_topology_unlock(); 839 gv_parity_request(p, GV_BIO_CHECK, 0); 840 break; 841 842 case GV_EVENT_START_PLEX: 843 G_VINUM_DEBUG(2, "event 'start' plex"); 844 p = ev->arg1; 845 gv_start_plex(p); 846 break; 847 848 case GV_EVENT_START_VOLUME: 849 G_VINUM_DEBUG(2, "event 'start' volume"); 850 v = ev->arg1; 851 gv_start_vol(v); 852 break; 853 854 case GV_EVENT_ATTACH_PLEX: 855 G_VINUM_DEBUG(2, "event 'attach' plex"); 856 p = ev->arg1; 857 v = ev->arg2; 858 rename = ev->arg4; 859 err = gv_attach_plex(p, v, rename); 860 if (err) 861 G_VINUM_DEBUG(0, "error attaching %s to" 862 " %s: error code %d", p->name, 863 v->name, err); 864 break; 865 866 case GV_EVENT_ATTACH_SD: 867 G_VINUM_DEBUG(2, "event 'attach' sd"); 868 s = ev->arg1; 869 p = ev->arg2; 870 offset = ev->arg3; 871 rename = ev->arg4; 872 err = gv_attach_sd(s, p, offset, rename); 873 if (err) 874 G_VINUM_DEBUG(0, "error attaching %s to" 875 " %s: error code %d", s->name, 876 p->name, err); 877 break; 878 879 case GV_EVENT_DETACH_PLEX: 880 G_VINUM_DEBUG(2, "event 'detach' plex"); 881 p = ev->arg1; 882 flags = ev->arg3; 883 err = gv_detach_plex(p, flags); 884 if (err) 885 G_VINUM_DEBUG(0, "error detaching %s: " 886 "error code %d", p->name, err); 887 break; 888 889 case GV_EVENT_DETACH_SD: 890 G_VINUM_DEBUG(2, "event 'detach' sd"); 891 s = ev->arg1; 892 flags = ev->arg3; 893 err = gv_detach_sd(s, flags); 894 if (err) 895 G_VINUM_DEBUG(0, "error detaching %s: " 896 "error code %d", s->name, err); 897 break; 898 899 case GV_EVENT_RENAME_VOL: 900 G_VINUM_DEBUG(2, "event 'rename' volume"); 901 v = ev->arg1; 902 newname = ev->arg2; 903 flags = ev->arg3; 904 err = gv_rename_vol(sc, v, newname, flags); 905 if (err) 906 G_VINUM_DEBUG(0, "error renaming %s to " 907 "%s: error code %d", v->name, 908 newname, err); 909 g_free(newname); 910 /* Destroy and recreate the provider if we can. */ 911 if (gv_provider_is_open(v->provider)) { 912 G_VINUM_DEBUG(0, "unable to rename " 913 "provider to %s: provider in use", 914 v->name); 915 break; 916 } 917 g_topology_lock(); 918 g_wither_provider(v->provider, ENOENT); 919 g_topology_unlock(); 920 v->provider = NULL; 921 gv_post_event(sc, GV_EVENT_SETUP_OBJECTS, sc, 922 NULL, 0, 0); 923 break; 924 925 case GV_EVENT_RENAME_PLEX: 926 G_VINUM_DEBUG(2, "event 'rename' plex"); 927 p = ev->arg1; 928 newname = ev->arg2; 929 flags = ev->arg3; 930 err = gv_rename_plex(sc, p, newname, flags); 931 if (err) 932 G_VINUM_DEBUG(0, "error renaming %s to " 933 "%s: error code %d", p->name, 934 newname, err); 935 g_free(newname); 936 break; 937 938 case GV_EVENT_RENAME_SD: 939 G_VINUM_DEBUG(2, "event 'rename' sd"); 940 s = ev->arg1; 941 newname = ev->arg2; 942 flags = ev->arg3; 943 err = gv_rename_sd(sc, s, newname, flags); 944 if (err) 945 G_VINUM_DEBUG(0, "error renaming %s to " 946 "%s: error code %d", s->name, 947 newname, err); 948 g_free(newname); 949 break; 950 951 case GV_EVENT_RENAME_DRIVE: 952 G_VINUM_DEBUG(2, "event 'rename' drive"); 953 d = ev->arg1; 954 newname = ev->arg2; 955 flags = ev->arg3; 956 err = gv_rename_drive(sc, d, newname, flags); 957 if (err) 958 G_VINUM_DEBUG(0, "error renaming %s to " 959 "%s: error code %d", d->name, 960 newname, err); 961 g_free(newname); 962 break; 963 964 case GV_EVENT_MOVE_SD: 965 G_VINUM_DEBUG(2, "event 'move' sd"); 966 s = ev->arg1; 967 d = ev->arg2; 968 flags = ev->arg3; 969 err = gv_move_sd(sc, s, d, flags); 970 if (err) 971 G_VINUM_DEBUG(0, "error moving %s to " 972 "%s: error code %d", s->name, 973 d->name, err); 974 break; 975 976 case GV_EVENT_THREAD_EXIT: 977 G_VINUM_DEBUG(2, "event 'thread exit'"); 978 g_free(ev); 979 mtx_lock(&sc->equeue_mtx); 980 mtx_lock(&sc->bqueue_mtx); 981 gv_cleanup(sc); 982 mtx_destroy(&sc->bqueue_mtx); 983 mtx_destroy(&sc->equeue_mtx); 984 g_free(sc->bqueue_down); 985 g_free(sc->bqueue_up); 986 g_free(sc); 987 kproc_exit(0); 988 /* NOTREACHED */ 989 990 default: 991 G_VINUM_DEBUG(1, "unknown event %d", ev->type); 992 } 993 994 g_free(ev); 995 continue; 996 } 997 998 /* ... then do I/O processing. */ 999 mtx_lock(&sc->bqueue_mtx); 1000 /* First do new requests. */ 1001 bp = bioq_takefirst(sc->bqueue_down); 1002 if (bp != NULL) { 1003 mtx_unlock(&sc->bqueue_mtx); 1004 /* A bio that interfered with another bio. */ 1005 if (bp->bio_pflags & GV_BIO_ONHOLD) { 1006 s = bp->bio_caller1; 1007 p = s->plex_sc; 1008 /* Is it still locked out? */ 1009 if (gv_stripe_active(p, bp)) { 1010 /* Park the bio on the waiting queue. */ 1011 bioq_disksort(p->wqueue, bp); 1012 } else { 1013 bp->bio_pflags &= ~GV_BIO_ONHOLD; 1014 g_io_request(bp, s->drive_sc->consumer); 1015 } 1016 /* A special request requireing special handling. */ 1017 } else if (bp->bio_pflags & GV_BIO_INTERNAL) { 1018 p = bp->bio_caller1; 1019 gv_plex_start(p, bp); 1020 } else { 1021 gv_volume_start(sc, bp); 1022 } 1023 mtx_lock(&sc->bqueue_mtx); 1024 } 1025 /* Then do completed requests. */ 1026 bp = bioq_takefirst(sc->bqueue_up); 1027 if (bp == NULL) { 1028 msleep(sc, &sc->bqueue_mtx, PRIBIO, "-", hz/10); 1029 mtx_unlock(&sc->bqueue_mtx); 1030 continue; 1031 } 1032 mtx_unlock(&sc->bqueue_mtx); 1033 gv_bio_done(sc, bp); 1034 } 1035} 1036 1037#define VINUM_CLASS_NAME "VINUM" 1038 1039static struct g_class g_vinum_class = { 1040 .name = VINUM_CLASS_NAME, 1041 .version = G_VERSION, 1042 .init = gv_init, 1043 .taste = gv_taste, 1044 .ctlreq = gv_config, 1045 .destroy_geom = gv_unload, 1046}; 1047 1048DECLARE_GEOM_CLASS(g_vinum_class, g_vinum); 1049