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FreeBSD/Linux Kernel Cross Reference
sys/geom/vinum/geom_vinum.c
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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: releng/8.0/sys/geom/vinum/geom_vinum.c 195752 2009-07-18 11:12:48Z lulf $"); 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 error = ENXIO; 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 } 159 160 static void 161 gv_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, NULL, 0, 0, "gv_worker"); 191 } 192 193 static int 194 gv_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_post_event(sc, GV_EVENT_THREAD_EXIT, NULL, NULL, 0, 0); 205 gp->softc = NULL; 206 g_wither_geom(gp, ENXIO); 207 return (EAGAIN); 208 } 209 210 return (0); 211 } 212 213 /* Handle userland request of attaching object. */ 214 static void 215 gv_attach(struct gv_softc *sc, struct gctl_req *req) 216 { 217 struct gv_volume *v; 218 struct gv_plex *p; 219 struct gv_sd *s; 220 off_t *offset; 221 int *rename, type_child, type_parent; 222 char *child, *parent; 223 224 child = gctl_get_param(req, "child", NULL); 225 if (child == NULL) { 226 gctl_error(req, "no child given"); 227 return; 228 } 229 parent = gctl_get_param(req, "parent", NULL); 230 if (parent == NULL) { 231 gctl_error(req, "no parent given"); 232 return; 233 } 234 offset = gctl_get_paraml(req, "offset", sizeof(*offset)); 235 if (offset == NULL) { 236 gctl_error(req, "no offset given"); 237 return; 238 } 239 rename = gctl_get_paraml(req, "rename", sizeof(*rename)); 240 if (rename == NULL) { 241 gctl_error(req, "no rename flag given"); 242 return; 243 } 244 245 type_child = gv_object_type(sc, child); 246 type_parent = gv_object_type(sc, parent); 247 248 switch (type_child) { 249 case GV_TYPE_PLEX: 250 if (type_parent != GV_TYPE_VOL) { 251 gctl_error(req, "no such volume to attach to"); 252 return; 253 } 254 v = gv_find_vol(sc, parent); 255 p = gv_find_plex(sc, child); 256 gv_post_event(sc, GV_EVENT_ATTACH_PLEX, p, v, *offset, *rename); 257 break; 258 case GV_TYPE_SD: 259 if (type_parent != GV_TYPE_PLEX) { 260 gctl_error(req, "no such plex to attach to"); 261 return; 262 } 263 p = gv_find_plex(sc, parent); 264 s = gv_find_sd(sc, child); 265 gv_post_event(sc, GV_EVENT_ATTACH_SD, s, p, *offset, *rename); 266 break; 267 default: 268 gctl_error(req, "invalid child type"); 269 break; 270 } 271 } 272 273 /* Handle userland request of detaching object. */ 274 static void 275 gv_detach(struct gv_softc *sc, struct gctl_req *req) 276 { 277 struct gv_plex *p; 278 struct gv_sd *s; 279 int *flags, type; 280 char *object; 281 282 object = gctl_get_param(req, "object", NULL); 283 if (object == NULL) { 284 gctl_error(req, "no argument given"); 285 return; 286 } 287 288 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 289 type = gv_object_type(sc, object); 290 switch (type) { 291 case GV_TYPE_PLEX: 292 p = gv_find_plex(sc, object); 293 gv_post_event(sc, GV_EVENT_DETACH_PLEX, p, NULL, *flags, 0); 294 break; 295 case GV_TYPE_SD: 296 s = gv_find_sd(sc, object); 297 gv_post_event(sc, GV_EVENT_DETACH_SD, s, NULL, *flags, 0); 298 break; 299 default: 300 gctl_error(req, "invalid object type"); 301 break; 302 } 303 } 304 305 /* Handle userland requests for creating new objects. */ 306 static int 307 gv_create(struct g_geom *gp, struct gctl_req *req) 308 { 309 struct gv_softc *sc; 310 struct gv_drive *d, *d2; 311 struct gv_plex *p, *p2; 312 struct gv_sd *s, *s2; 313 struct gv_volume *v, *v2; 314 struct g_provider *pp; 315 int error, i, *drives, *flags, *plexes, *subdisks, *volumes; 316 char buf[20]; 317 318 g_topology_assert(); 319 320 sc = gp->softc; 321 322 /* Find out how many of each object have been passed in. */ 323 volumes = gctl_get_paraml(req, "volumes", sizeof(*volumes)); 324 plexes = gctl_get_paraml(req, "plexes", sizeof(*plexes)); 325 subdisks = gctl_get_paraml(req, "subdisks", sizeof(*subdisks)); 326 drives = gctl_get_paraml(req, "drives", sizeof(*drives)); 327 if (volumes == NULL || plexes == NULL || subdisks == NULL || 328 drives == NULL) { 329 gctl_error(req, "number of objects not given"); 330 return (-1); 331 } 332 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 333 if (flags == NULL) { 334 gctl_error(req, "flags not given"); 335 return (-1); 336 } 337 338 /* First, handle drive definitions ... */ 339 for (i = 0; i < *drives; i++) { 340 snprintf(buf, sizeof(buf), "drive%d", i); 341 d2 = gctl_get_paraml(req, buf, sizeof(*d2)); 342 if (d2 == NULL) { 343 gctl_error(req, "no drive definition given"); 344 return (-1); 345 } 346 /* 347 * Make sure that the device specified in the drive config is 348 * an active GEOM provider. 349 */ 350 pp = g_provider_by_name(d2->device); 351 if (pp == NULL) { 352 gctl_error(req, "%s: device not found", d2->device); 353 goto error; 354 } 355 if (gv_find_drive(sc, d2->name) != NULL) { 356 /* Ignore error. */ 357 if (*flags & GV_FLAG_F) 358 continue; 359 gctl_error(req, "drive '%s' already exists", d2->name); 360 goto error; 361 } 362 if (gv_find_drive_device(sc, d2->device) != NULL) { 363 gctl_error(req, "device '%s' already configured in " 364 "gvinum", d2->device); 365 goto error; 366 } 367 368 369 d = g_malloc(sizeof(*d), M_WAITOK | M_ZERO); 370 bcopy(d2, d, sizeof(*d)); 371 372 gv_post_event(sc, GV_EVENT_CREATE_DRIVE, d, NULL, 0, 0); 373 } 374 375 /* ... then volume definitions ... */ 376 for (i = 0; i < *volumes; i++) { 377 error = 0; 378 snprintf(buf, sizeof(buf), "volume%d", i); 379 v2 = gctl_get_paraml(req, buf, sizeof(*v2)); 380 if (v2 == NULL) { 381 gctl_error(req, "no volume definition given"); 382 return (-1); 383 } 384 if (gv_find_vol(sc, v2->name) != NULL) { 385 /* Ignore error. */ 386 if (*flags & GV_FLAG_F) 387 continue; 388 gctl_error(req, "volume '%s' already exists", v2->name); 389 goto error; 390 } 391 392 v = g_malloc(sizeof(*v), M_WAITOK | M_ZERO); 393 bcopy(v2, v, sizeof(*v)); 394 395 gv_post_event(sc, GV_EVENT_CREATE_VOLUME, v, NULL, 0, 0); 396 } 397 398 /* ... then plex definitions ... */ 399 for (i = 0; i < *plexes; i++) { 400 error = 0; 401 snprintf(buf, sizeof(buf), "plex%d", i); 402 p2 = gctl_get_paraml(req, buf, sizeof(*p2)); 403 if (p2 == NULL) { 404 gctl_error(req, "no plex definition given"); 405 return (-1); 406 } 407 if (gv_find_plex(sc, p2->name) != NULL) { 408 /* Ignore error. */ 409 if (*flags & GV_FLAG_F) 410 continue; 411 gctl_error(req, "plex '%s' already exists", p2->name); 412 goto error; 413 } 414 415 p = g_malloc(sizeof(*p), M_WAITOK | M_ZERO); 416 bcopy(p2, p, sizeof(*p)); 417 418 gv_post_event(sc, GV_EVENT_CREATE_PLEX, p, NULL, 0, 0); 419 } 420 421 /* ... and, finally, subdisk definitions. */ 422 for (i = 0; i < *subdisks; i++) { 423 error = 0; 424 snprintf(buf, sizeof(buf), "sd%d", i); 425 s2 = gctl_get_paraml(req, buf, sizeof(*s2)); 426 if (s2 == NULL) { 427 gctl_error(req, "no subdisk definition given"); 428 return (-1); 429 } 430 if (gv_find_sd(sc, s2->name) != NULL) { 431 /* Ignore error. */ 432 if (*flags & GV_FLAG_F) 433 continue; 434 gctl_error(req, "sd '%s' already exists", s2->name); 435 goto error; 436 } 437 438 s = g_malloc(sizeof(*s), M_WAITOK | M_ZERO); 439 bcopy(s2, s, sizeof(*s)); 440 441 gv_post_event(sc, GV_EVENT_CREATE_SD, s, NULL, 0, 0); 442 } 443 444 error: 445 gv_post_event(sc, GV_EVENT_SETUP_OBJECTS, sc, NULL, 0, 0); 446 gv_post_event(sc, GV_EVENT_SAVE_CONFIG, sc, NULL, 0, 0); 447 448 return (0); 449 } 450 451 static void 452 gv_config(struct gctl_req *req, struct g_class *mp, char const *verb) 453 { 454 struct g_geom *gp; 455 struct gv_softc *sc; 456 struct sbuf *sb; 457 char *comment; 458 459 g_topology_assert(); 460 461 gp = LIST_FIRST(&mp->geom); 462 sc = gp->softc; 463 464 if (!strcmp(verb, "attach")) { 465 gv_attach(sc, req); 466 467 } else if (!strcmp(verb, "concat")) { 468 gv_concat(gp, req); 469 470 } else if (!strcmp(verb, "detach")) { 471 gv_detach(sc, req); 472 473 } else if (!strcmp(verb, "list")) { 474 gv_list(gp, req); 475 476 /* Save our configuration back to disk. */ 477 } else if (!strcmp(verb, "saveconfig")) { 478 gv_post_event(sc, GV_EVENT_SAVE_CONFIG, sc, NULL, 0, 0); 479 480 /* Return configuration in string form. */ 481 } else if (!strcmp(verb, "getconfig")) { 482 comment = gctl_get_param(req, "comment", NULL); 483 if (comment == NULL) { 484 gctl_error(req, "no comment parameter given"); 485 return; 486 } 487 sb = sbuf_new(NULL, NULL, GV_CFG_LEN, SBUF_FIXEDLEN); 488 gv_format_config(sc, sb, 0, comment); 489 sbuf_finish(sb); 490 gctl_set_param(req, "config", sbuf_data(sb), sbuf_len(sb) + 1); 491 sbuf_delete(sb); 492 493 } else if (!strcmp(verb, "create")) { 494 gv_create(gp, req); 495 496 } else if (!strcmp(verb, "mirror")) { 497 gv_mirror(gp, req); 498 499 } else if (!strcmp(verb, "move")) { 500 gv_move(gp, req); 501 502 } else if (!strcmp(verb, "raid5")) { 503 gv_raid5(gp, req); 504 505 } else if (!strcmp(verb, "rebuildparity") || 506 !strcmp(verb, "checkparity")) { 507 gv_parityop(sc, req); 508 509 } else if (!strcmp(verb, "remove")) { 510 gv_remove(gp, req); 511 512 } else if (!strcmp(verb, "rename")) { 513 gv_rename(gp, req); 514 515 } else if (!strcmp(verb, "resetconfig")) { 516 gv_post_event(sc, GV_EVENT_RESET_CONFIG, sc, NULL, 0, 0); 517 518 } else if (!strcmp(verb, "start")) { 519 gv_start_obj(gp, req); 520 521 } else if (!strcmp(verb, "stripe")) { 522 gv_stripe(gp, req); 523 524 } else if (!strcmp(verb, "setstate")) { 525 gv_setstate(gp, req); 526 } else 527 gctl_error(req, "Unknown verb parameter"); 528 } 529 530 static void 531 gv_parityop(struct gv_softc *sc, struct gctl_req *req) 532 { 533 struct gv_plex *p; 534 int *flags, *rebuild, type; 535 char *plex; 536 537 plex = gctl_get_param(req, "plex", NULL); 538 if (plex == NULL) { 539 gctl_error(req, "no plex given"); 540 return; 541 } 542 543 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 544 if (flags == NULL) { 545 gctl_error(req, "no flags given"); 546 return; 547 } 548 549 rebuild = gctl_get_paraml(req, "rebuild", sizeof(*rebuild)); 550 if (rebuild == NULL) { 551 gctl_error(req, "no operation given"); 552 return; 553 } 554 555 type = gv_object_type(sc, plex); 556 if (type != GV_TYPE_PLEX) { 557 gctl_error(req, "'%s' is not a plex", plex); 558 return; 559 } 560 p = gv_find_plex(sc, plex); 561 562 if (p->state != GV_PLEX_UP) { 563 gctl_error(req, "plex %s is not completely accessible", 564 p->name); 565 return; 566 } 567 568 if (p->org != GV_PLEX_RAID5) { 569 gctl_error(req, "plex %s is not a RAID5 plex", p->name); 570 return; 571 } 572 573 /* Put it in the event queue. */ 574 /* XXX: The state of the plex might have changed when this event is 575 * picked up ... We should perhaps check this afterwards. */ 576 if (*rebuild) 577 gv_post_event(sc, GV_EVENT_PARITY_REBUILD, p, NULL, 0, 0); 578 else 579 gv_post_event(sc, GV_EVENT_PARITY_CHECK, p, NULL, 0, 0); 580 } 581 582 583 static struct g_geom * 584 gv_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 585 { 586 struct g_geom *gp; 587 struct g_consumer *cp; 588 struct gv_softc *sc; 589 struct gv_hdr vhdr; 590 int error; 591 592 g_topology_assert(); 593 g_trace(G_T_TOPOLOGY, "gv_taste(%s, %s)", mp->name, pp->name); 594 595 gp = LIST_FIRST(&mp->geom); 596 if (gp == NULL) { 597 G_VINUM_DEBUG(0, "error: tasting, but not initialized?"); 598 return (NULL); 599 } 600 sc = gp->softc; 601 602 cp = g_new_consumer(gp); 603 if (g_attach(cp, pp) != 0) { 604 g_destroy_consumer(cp); 605 return (NULL); 606 } 607 if (g_access(cp, 1, 0, 0) != 0) { 608 g_detach(cp); 609 g_destroy_consumer(cp); 610 return (NULL); 611 } 612 g_topology_unlock(); 613 614 error = gv_read_header(cp, &vhdr); 615 616 g_topology_lock(); 617 g_access(cp, -1, 0, 0); 618 g_detach(cp); 619 g_destroy_consumer(cp); 620 621 /* Check if what we've been given is a valid vinum drive. */ 622 if (!error) 623 gv_post_event(sc, GV_EVENT_DRIVE_TASTED, pp, NULL, 0, 0); 624 625 return (NULL); 626 } 627 628 void 629 gv_worker(void *arg) 630 { 631 struct g_provider *pp; 632 struct gv_softc *sc; 633 struct gv_event *ev; 634 struct gv_volume *v; 635 struct gv_plex *p; 636 struct gv_sd *s; 637 struct gv_drive *d; 638 struct bio *bp; 639 int newstate, flags, err, rename; 640 char *newname; 641 off_t offset; 642 643 sc = arg; 644 KASSERT(sc != NULL, ("NULL sc")); 645 for (;;) { 646 /* Look at the events first... */ 647 ev = gv_get_event(sc); 648 if (ev != NULL) { 649 gv_remove_event(sc, ev); 650 651 switch (ev->type) { 652 case GV_EVENT_DRIVE_TASTED: 653 G_VINUM_DEBUG(2, "event 'drive tasted'"); 654 pp = ev->arg1; 655 gv_drive_tasted(sc, pp); 656 break; 657 658 case GV_EVENT_DRIVE_LOST: 659 G_VINUM_DEBUG(2, "event 'drive lost'"); 660 d = ev->arg1; 661 gv_drive_lost(sc, d); 662 break; 663 664 case GV_EVENT_CREATE_DRIVE: 665 G_VINUM_DEBUG(2, "event 'create drive'"); 666 d = ev->arg1; 667 gv_create_drive(sc, d); 668 break; 669 670 case GV_EVENT_CREATE_VOLUME: 671 G_VINUM_DEBUG(2, "event 'create volume'"); 672 v = ev->arg1; 673 gv_create_volume(sc, v); 674 break; 675 676 case GV_EVENT_CREATE_PLEX: 677 G_VINUM_DEBUG(2, "event 'create plex'"); 678 p = ev->arg1; 679 gv_create_plex(sc, p); 680 break; 681 682 case GV_EVENT_CREATE_SD: 683 G_VINUM_DEBUG(2, "event 'create sd'"); 684 s = ev->arg1; 685 gv_create_sd(sc, s); 686 break; 687 688 case GV_EVENT_RM_DRIVE: 689 G_VINUM_DEBUG(2, "event 'remove drive'"); 690 d = ev->arg1; 691 flags = ev->arg3; 692 gv_rm_drive(sc, d, flags); 693 /*gv_setup_objects(sc);*/ 694 break; 695 696 case GV_EVENT_RM_VOLUME: 697 G_VINUM_DEBUG(2, "event 'remove volume'"); 698 v = ev->arg1; 699 gv_rm_vol(sc, v); 700 /*gv_setup_objects(sc);*/ 701 break; 702 703 case GV_EVENT_RM_PLEX: 704 G_VINUM_DEBUG(2, "event 'remove plex'"); 705 p = ev->arg1; 706 gv_rm_plex(sc, p); 707 /*gv_setup_objects(sc);*/ 708 break; 709 710 case GV_EVENT_RM_SD: 711 G_VINUM_DEBUG(2, "event 'remove sd'"); 712 s = ev->arg1; 713 gv_rm_sd(sc, s); 714 /*gv_setup_objects(sc);*/ 715 break; 716 717 case GV_EVENT_SAVE_CONFIG: 718 G_VINUM_DEBUG(2, "event 'save config'"); 719 gv_save_config(sc); 720 break; 721 722 case GV_EVENT_SET_SD_STATE: 723 G_VINUM_DEBUG(2, "event 'setstate sd'"); 724 s = ev->arg1; 725 newstate = ev->arg3; 726 flags = ev->arg4; 727 err = gv_set_sd_state(s, newstate, flags); 728 if (err) 729 G_VINUM_DEBUG(0, "error setting subdisk" 730 " state: error code %d", err); 731 break; 732 733 case GV_EVENT_SET_DRIVE_STATE: 734 G_VINUM_DEBUG(2, "event 'setstate drive'"); 735 d = ev->arg1; 736 newstate = ev->arg3; 737 flags = ev->arg4; 738 err = gv_set_drive_state(d, newstate, flags); 739 if (err) 740 G_VINUM_DEBUG(0, "error setting drive " 741 "state: error code %d", err); 742 break; 743 744 case GV_EVENT_SET_VOL_STATE: 745 G_VINUM_DEBUG(2, "event 'setstate volume'"); 746 v = ev->arg1; 747 newstate = ev->arg3; 748 flags = ev->arg4; 749 err = gv_set_vol_state(v, newstate, flags); 750 if (err) 751 G_VINUM_DEBUG(0, "error setting volume " 752 "state: error code %d", err); 753 break; 754 755 case GV_EVENT_SET_PLEX_STATE: 756 G_VINUM_DEBUG(2, "event 'setstate plex'"); 757 p = ev->arg1; 758 newstate = ev->arg3; 759 flags = ev->arg4; 760 err = gv_set_plex_state(p, newstate, flags); 761 if (err) 762 G_VINUM_DEBUG(0, "error setting plex " 763 "state: error code %d", err); 764 break; 765 766 case GV_EVENT_SETUP_OBJECTS: 767 G_VINUM_DEBUG(2, "event 'setup objects'"); 768 gv_setup_objects(sc); 769 break; 770 771 case GV_EVENT_RESET_CONFIG: 772 G_VINUM_DEBUG(2, "event 'resetconfig'"); 773 err = gv_resetconfig(sc); 774 if (err) 775 G_VINUM_DEBUG(0, "error resetting " 776 "config: error code %d", err); 777 break; 778 779 case GV_EVENT_PARITY_REBUILD: 780 /* 781 * Start the rebuild. The gv_plex_done will 782 * handle issuing of the remaining rebuild bio's 783 * until it's finished. 784 */ 785 G_VINUM_DEBUG(2, "event 'rebuild'"); 786 p = ev->arg1; 787 if (p->state != GV_PLEX_UP) { 788 G_VINUM_DEBUG(0, "plex %s is not " 789 "completely accessible", p->name); 790 break; 791 } 792 p->synced = 0; 793 g_topology_assert_not(); 794 g_topology_lock(); 795 err = gv_access(p->vol_sc->provider, 1, 1, 0); 796 if (err) { 797 G_VINUM_DEBUG(0, "unable to access " 798 "provider"); 799 break; 800 } 801 g_topology_unlock(); 802 gv_parity_request(p, GV_BIO_CHECK | 803 GV_BIO_PARITY, 0); 804 break; 805 806 case GV_EVENT_PARITY_CHECK: 807 /* Start parity check. */ 808 G_VINUM_DEBUG(2, "event 'check'"); 809 p = ev->arg1; 810 if (p->state != GV_PLEX_UP) { 811 G_VINUM_DEBUG(0, "plex %s is not " 812 "completely accessible", p->name); 813 break; 814 } 815 p->synced = 0; 816 g_topology_assert_not(); 817 g_topology_lock(); 818 err = gv_access(p->vol_sc->provider, 1, 1, 0); 819 if (err) { 820 G_VINUM_DEBUG(0, "unable to access " 821 "provider"); 822 break; 823 } 824 g_topology_unlock(); 825 gv_parity_request(p, GV_BIO_CHECK, 0); 826 break; 827 828 case GV_EVENT_START_PLEX: 829 G_VINUM_DEBUG(2, "event 'start' plex"); 830 p = ev->arg1; 831 gv_start_plex(p); 832 break; 833 834 case GV_EVENT_START_VOLUME: 835 G_VINUM_DEBUG(2, "event 'start' volume"); 836 v = ev->arg1; 837 gv_start_vol(v); 838 break; 839 840 case GV_EVENT_ATTACH_PLEX: 841 G_VINUM_DEBUG(2, "event 'attach' plex"); 842 p = ev->arg1; 843 v = ev->arg2; 844 rename = ev->arg4; 845 err = gv_attach_plex(p, v, rename); 846 if (err) 847 G_VINUM_DEBUG(0, "error attaching %s to" 848 " %s: error code %d", p->name, 849 v->name, err); 850 break; 851 852 case GV_EVENT_ATTACH_SD: 853 G_VINUM_DEBUG(2, "event 'attach' sd"); 854 s = ev->arg1; 855 p = ev->arg2; 856 offset = ev->arg3; 857 rename = ev->arg4; 858 err = gv_attach_sd(s, p, offset, rename); 859 if (err) 860 G_VINUM_DEBUG(0, "error attaching %s to" 861 " %s: error code %d", s->name, 862 p->name, err); 863 break; 864 865 case GV_EVENT_DETACH_PLEX: 866 G_VINUM_DEBUG(2, "event 'detach' plex"); 867 p = ev->arg1; 868 flags = ev->arg3; 869 err = gv_detach_plex(p, flags); 870 if (err) 871 G_VINUM_DEBUG(0, "error detaching %s: " 872 "error code %d", p->name, err); 873 break; 874 875 case GV_EVENT_DETACH_SD: 876 G_VINUM_DEBUG(2, "event 'detach' sd"); 877 s = ev->arg1; 878 flags = ev->arg3; 879 err = gv_detach_sd(s, flags); 880 if (err) 881 G_VINUM_DEBUG(0, "error detaching %s: " 882 "error code %d", s->name, err); 883 break; 884 885 case GV_EVENT_RENAME_VOL: 886 G_VINUM_DEBUG(2, "event 'rename' volume"); 887 v = ev->arg1; 888 newname = ev->arg2; 889 flags = ev->arg3; 890 err = gv_rename_vol(sc, v, newname, flags); 891 if (err) 892 G_VINUM_DEBUG(0, "error renaming %s to " 893 "%s: error code %d", v->name, 894 newname, err); 895 g_free(newname); 896 /* Destroy and recreate the provider if we can. */ 897 if (gv_provider_is_open(v->provider)) { 898 G_VINUM_DEBUG(0, "unable to rename " 899 "provider to %s: provider in use", 900 v->name); 901 break; 902 } 903 g_topology_lock(); 904 g_wither_provider(v->provider, ENOENT); 905 g_topology_unlock(); 906 v->provider = NULL; 907 gv_post_event(sc, GV_EVENT_SETUP_OBJECTS, sc, 908 NULL, 0, 0); 909 break; 910 911 case GV_EVENT_RENAME_PLEX: 912 G_VINUM_DEBUG(2, "event 'rename' plex"); 913 p = ev->arg1; 914 newname = ev->arg2; 915 flags = ev->arg3; 916 err = gv_rename_plex(sc, p, newname, flags); 917 if (err) 918 G_VINUM_DEBUG(0, "error renaming %s to " 919 "%s: error code %d", p->name, 920 newname, err); 921 g_free(newname); 922 break; 923 924 case GV_EVENT_RENAME_SD: 925 G_VINUM_DEBUG(2, "event 'rename' sd"); 926 s = ev->arg1; 927 newname = ev->arg2; 928 flags = ev->arg3; 929 err = gv_rename_sd(sc, s, newname, flags); 930 if (err) 931 G_VINUM_DEBUG(0, "error renaming %s to " 932 "%s: error code %d", s->name, 933 newname, err); 934 g_free(newname); 935 break; 936 937 case GV_EVENT_RENAME_DRIVE: 938 G_VINUM_DEBUG(2, "event 'rename' drive"); 939 d = ev->arg1; 940 newname = ev->arg2; 941 flags = ev->arg3; 942 err = gv_rename_drive(sc, d, newname, flags); 943 if (err) 944 G_VINUM_DEBUG(0, "error renaming %s to " 945 "%s: error code %d", d->name, 946 newname, err); 947 g_free(newname); 948 break; 949 950 case GV_EVENT_MOVE_SD: 951 G_VINUM_DEBUG(2, "event 'move' sd"); 952 s = ev->arg1; 953 d = ev->arg2; 954 flags = ev->arg3; 955 err = gv_move_sd(sc, s, d, flags); 956 if (err) 957 G_VINUM_DEBUG(0, "error moving %s to " 958 "%s: error code %d", s->name, 959 d->name, err); 960 break; 961 962 case GV_EVENT_THREAD_EXIT: 963 G_VINUM_DEBUG(2, "event 'thread exit'"); 964 g_free(ev); 965 mtx_lock(&sc->equeue_mtx); 966 mtx_lock(&sc->bqueue_mtx); 967 gv_cleanup(sc); 968 mtx_destroy(&sc->bqueue_mtx); 969 mtx_destroy(&sc->equeue_mtx); 970 g_free(sc->bqueue_down); 971 g_free(sc->bqueue_up); 972 g_free(sc); 973 kproc_exit(ENXIO); 974 break; /* not reached */ 975 976 default: 977 G_VINUM_DEBUG(1, "unknown event %d", ev->type); 978 } 979 980 g_free(ev); 981 continue; 982 } 983 984 /* ... then do I/O processing. */ 985 mtx_lock(&sc->bqueue_mtx); 986 /* First do new requests. */ 987 bp = bioq_takefirst(sc->bqueue_down); 988 if (bp != NULL) { 989 mtx_unlock(&sc->bqueue_mtx); 990 /* A bio that interfered with another bio. */ 991 if (bp->bio_pflags & GV_BIO_ONHOLD) { 992 s = bp->bio_caller1; 993 p = s->plex_sc; 994 /* Is it still locked out? */ 995 if (gv_stripe_active(p, bp)) { 996 /* Park the bio on the waiting queue. */ 997 bioq_disksort(p->wqueue, bp); 998 } else { 999 bp->bio_pflags &= ~GV_BIO_ONHOLD; 1000 g_io_request(bp, s->drive_sc->consumer); 1001 } 1002 /* A special request requireing special handling. */ 1003 } else if (bp->bio_pflags & GV_BIO_INTERNAL) { 1004 p = bp->bio_caller1; 1005 gv_plex_start(p, bp); 1006 } else { 1007 gv_volume_start(sc, bp); 1008 } 1009 mtx_lock(&sc->bqueue_mtx); 1010 } 1011 /* Then do completed requests. */ 1012 bp = bioq_takefirst(sc->bqueue_up); 1013 if (bp == NULL) { 1014 msleep(sc, &sc->bqueue_mtx, PRIBIO, "-", hz/10); 1015 mtx_unlock(&sc->bqueue_mtx); 1016 continue; 1017 } 1018 mtx_unlock(&sc->bqueue_mtx); 1019 gv_bio_done(sc, bp); 1020 } 1021 } 1022 1023 #define VINUM_CLASS_NAME "VINUM" 1024 1025 static struct g_class g_vinum_class = { 1026 .name = VINUM_CLASS_NAME, 1027 .version = G_VERSION, 1028 .init = gv_init, 1029 .taste = gv_taste, 1030 .ctlreq = gv_config, 1031 .destroy_geom = gv_unload, 1032 }; 1033 1034 DECLARE_GEOM_CLASS(g_vinum_class, g_vinum);
Cache object: a2932741b59d824b7d68bbf1b6159ef0
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