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