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FreeBSD/Linux Kernel Cross Reference
sys/geom/vinum/geom_vinum.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2004, 2007 Lukas Ertl 5 * Copyright (c) 2007, 2009 Ulf Lilleengen 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 #include <sys/bio.h> 36 #include <sys/kernel.h> 37 #include <sys/kthread.h> 38 #include <sys/lock.h> 39 #include <sys/malloc.h> 40 #include <sys/module.h> 41 #include <sys/mutex.h> 42 #include <sys/sbuf.h> 43 #include <sys/sysctl.h> 44 #include <sys/systm.h> 45 46 #include <geom/geom.h> 47 #include <geom/geom_dbg.h> 48 #include <geom/vinum/geom_vinum_var.h> 49 #include <geom/vinum/geom_vinum.h> 50 #include <geom/vinum/geom_vinum_raid5.h> 51 52 SYSCTL_DECL(_kern_geom); 53 static SYSCTL_NODE(_kern_geom, OID_AUTO, vinum, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 54 "GEOM_VINUM stuff"); 55 u_int g_vinum_debug = 0; 56 SYSCTL_UINT(_kern_geom_vinum, OID_AUTO, debug, CTLFLAG_RWTUN, &g_vinum_debug, 0, 57 "Debug level"); 58 59 static int gv_create(struct g_geom *, struct gctl_req *); 60 static void gv_attach(struct gv_softc *, struct gctl_req *); 61 static void gv_detach(struct gv_softc *, struct gctl_req *); 62 static void gv_parityop(struct gv_softc *, struct gctl_req *); 63 64 static void 65 gv_orphan(struct g_consumer *cp) 66 { 67 struct g_geom *gp; 68 struct gv_softc *sc; 69 struct gv_drive *d; 70 71 g_topology_assert(); 72 73 KASSERT(cp != NULL, ("gv_orphan: null cp")); 74 gp = cp->geom; 75 KASSERT(gp != NULL, ("gv_orphan: null gp")); 76 sc = gp->softc; 77 KASSERT(sc != NULL, ("gv_orphan: null sc")); 78 d = cp->private; 79 KASSERT(d != NULL, ("gv_orphan: null d")); 80 81 g_trace(G_T_TOPOLOGY, "gv_orphan(%s)", gp->name); 82 83 gv_post_event(sc, GV_EVENT_DRIVE_LOST, d, NULL, 0, 0); 84 } 85 86 void 87 gv_start(struct bio *bp) 88 { 89 struct g_geom *gp; 90 struct gv_softc *sc; 91 92 gp = bp->bio_to->geom; 93 sc = gp->softc; 94 95 switch (bp->bio_cmd) { 96 case BIO_READ: 97 case BIO_WRITE: 98 case BIO_DELETE: 99 break; 100 case BIO_GETATTR: 101 default: 102 g_io_deliver(bp, EOPNOTSUPP); 103 return; 104 } 105 mtx_lock(&sc->bqueue_mtx); 106 bioq_disksort(sc->bqueue_down, bp); 107 wakeup(sc); 108 mtx_unlock(&sc->bqueue_mtx); 109 } 110 111 void 112 gv_done(struct bio *bp) 113 { 114 struct g_geom *gp; 115 struct gv_softc *sc; 116 117 KASSERT(bp != NULL, ("NULL bp")); 118 119 gp = bp->bio_from->geom; 120 sc = gp->softc; 121 122 mtx_lock(&sc->bqueue_mtx); 123 bioq_disksort(sc->bqueue_up, bp); 124 wakeup(sc); 125 mtx_unlock(&sc->bqueue_mtx); 126 } 127 128 int 129 gv_access(struct g_provider *pp, int dr, int dw, int de) 130 { 131 struct g_geom *gp; 132 struct gv_softc *sc; 133 struct gv_drive *d, *d2; 134 int error; 135 136 gp = pp->geom; 137 sc = gp->softc; 138 /* 139 * We want to modify the read count with the write count in case we have 140 * plexes in a RAID-5 organization. 141 */ 142 dr += dw; 143 144 LIST_FOREACH(d, &sc->drives, drive) { 145 if (d->consumer == NULL) 146 continue; 147 error = g_access(d->consumer, dr, dw, de); 148 if (error) { 149 LIST_FOREACH(d2, &sc->drives, drive) { 150 if (d == d2) 151 break; 152 g_access(d2->consumer, -dr, -dw, -de); 153 } 154 G_VINUM_DEBUG(0, "g_access '%s' failed: %d", d->name, 155 error); 156 return (error); 157 } 158 } 159 return (0); 160 } 161 162 static void 163 gv_init(struct g_class *mp) 164 { 165 struct g_geom *gp; 166 struct gv_softc *sc; 167 168 g_trace(G_T_TOPOLOGY, "gv_init(%p)", mp); 169 170 gp = g_new_geomf(mp, "VINUM"); 171 gp->spoiled = gv_orphan; 172 gp->orphan = gv_orphan; 173 gp->access = gv_access; 174 gp->start = gv_start; 175 gp->softc = g_malloc(sizeof(struct gv_softc), M_WAITOK | M_ZERO); 176 sc = gp->softc; 177 sc->geom = gp; 178 sc->bqueue_down = g_malloc(sizeof(struct bio_queue_head), 179 M_WAITOK | M_ZERO); 180 sc->bqueue_up = g_malloc(sizeof(struct bio_queue_head), 181 M_WAITOK | M_ZERO); 182 bioq_init(sc->bqueue_down); 183 bioq_init(sc->bqueue_up); 184 LIST_INIT(&sc->drives); 185 LIST_INIT(&sc->subdisks); 186 LIST_INIT(&sc->plexes); 187 LIST_INIT(&sc->volumes); 188 TAILQ_INIT(&sc->equeue); 189 mtx_init(&sc->config_mtx, "gv_config", NULL, MTX_DEF); 190 mtx_init(&sc->equeue_mtx, "gv_equeue", NULL, MTX_DEF); 191 mtx_init(&sc->bqueue_mtx, "gv_bqueue", NULL, MTX_DEF); 192 kproc_create(gv_worker, sc, &sc->worker, 0, 0, "gv_worker"); 193 } 194 195 static int 196 gv_unload(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 197 { 198 struct gv_softc *sc; 199 200 g_trace(G_T_TOPOLOGY, "gv_unload(%p)", mp); 201 202 g_topology_assert(); 203 sc = gp->softc; 204 205 if (sc != NULL) { 206 gv_worker_exit(sc); 207 gp->softc = NULL; 208 g_wither_geom(gp, ENXIO); 209 } 210 211 return (0); 212 } 213 214 /* Handle userland request of attaching object. */ 215 static void 216 gv_attach(struct gv_softc *sc, struct gctl_req *req) 217 { 218 struct gv_volume *v; 219 struct gv_plex *p; 220 struct gv_sd *s; 221 off_t *offset; 222 int *rename, type_child, type_parent; 223 char *child, *parent; 224 225 child = gctl_get_param(req, "child", NULL); 226 if (child == NULL) { 227 gctl_error(req, "no child given"); 228 return; 229 } 230 parent = gctl_get_param(req, "parent", NULL); 231 if (parent == NULL) { 232 gctl_error(req, "no parent given"); 233 return; 234 } 235 offset = gctl_get_paraml(req, "offset", sizeof(*offset)); 236 if (offset == NULL) { 237 gctl_error(req, "no offset given"); 238 return; 239 } 240 rename = gctl_get_paraml(req, "rename", sizeof(*rename)); 241 if (rename == NULL) { 242 gctl_error(req, "no rename flag given"); 243 return; 244 } 245 246 type_child = gv_object_type(sc, child); 247 type_parent = gv_object_type(sc, parent); 248 249 switch (type_child) { 250 case GV_TYPE_PLEX: 251 if (type_parent != GV_TYPE_VOL) { 252 gctl_error(req, "no such volume to attach to"); 253 return; 254 } 255 v = gv_find_vol(sc, parent); 256 p = gv_find_plex(sc, child); 257 gv_post_event(sc, GV_EVENT_ATTACH_PLEX, p, v, *offset, *rename); 258 break; 259 case GV_TYPE_SD: 260 if (type_parent != GV_TYPE_PLEX) { 261 gctl_error(req, "no such plex to attach to"); 262 return; 263 } 264 p = gv_find_plex(sc, parent); 265 s = gv_find_sd(sc, child); 266 gv_post_event(sc, GV_EVENT_ATTACH_SD, s, p, *offset, *rename); 267 break; 268 default: 269 gctl_error(req, "invalid child type"); 270 break; 271 } 272 } 273 274 /* Handle userland request of detaching object. */ 275 static void 276 gv_detach(struct gv_softc *sc, struct gctl_req *req) 277 { 278 struct gv_plex *p; 279 struct gv_sd *s; 280 int *flags, type; 281 char *object; 282 283 object = gctl_get_param(req, "object", NULL); 284 if (object == NULL) { 285 gctl_error(req, "no argument given"); 286 return; 287 } 288 289 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 290 type = gv_object_type(sc, object); 291 switch (type) { 292 case GV_TYPE_PLEX: 293 p = gv_find_plex(sc, object); 294 gv_post_event(sc, GV_EVENT_DETACH_PLEX, p, NULL, *flags, 0); 295 break; 296 case GV_TYPE_SD: 297 s = gv_find_sd(sc, object); 298 gv_post_event(sc, GV_EVENT_DETACH_SD, s, NULL, *flags, 0); 299 break; 300 default: 301 gctl_error(req, "invalid object type"); 302 break; 303 } 304 } 305 306 /* Handle userland requests for creating new objects. */ 307 static int 308 gv_create(struct g_geom *gp, struct gctl_req *req) 309 { 310 struct gv_softc *sc; 311 struct gv_drive *d, *d2; 312 struct gv_plex *p, *p2; 313 struct gv_sd *s, *s2; 314 struct gv_volume *v, *v2; 315 struct g_provider *pp; 316 int error, i, *drives, *flags, *plexes, *subdisks, *volumes; 317 char buf[20]; 318 319 g_topology_assert(); 320 321 sc = gp->softc; 322 323 /* Find out how many of each object have been passed in. */ 324 volumes = gctl_get_paraml(req, "volumes", sizeof(*volumes)); 325 plexes = gctl_get_paraml(req, "plexes", sizeof(*plexes)); 326 subdisks = gctl_get_paraml(req, "subdisks", sizeof(*subdisks)); 327 drives = gctl_get_paraml(req, "drives", sizeof(*drives)); 328 if (volumes == NULL || plexes == NULL || subdisks == NULL || 329 drives == NULL) { 330 gctl_error(req, "number of objects not given"); 331 return (-1); 332 } 333 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 334 if (flags == NULL) { 335 gctl_error(req, "flags not given"); 336 return (-1); 337 } 338 339 /* First, handle drive definitions ... */ 340 for (i = 0; i < *drives; i++) { 341 snprintf(buf, sizeof(buf), "drive%d", i); 342 d2 = gctl_get_paraml(req, buf, sizeof(*d2)); 343 if (d2 == NULL) { 344 gctl_error(req, "no drive definition given"); 345 return (-1); 346 } 347 /* 348 * Make sure that the device specified in the drive config is 349 * an active GEOM provider. 350 */ 351 pp = g_provider_by_name(d2->device); 352 if (pp == NULL) { 353 gctl_error(req, "%s: device not found", d2->device); 354 goto error; 355 } 356 if (gv_find_drive(sc, d2->name) != NULL) { 357 /* Ignore error. */ 358 if (*flags & GV_FLAG_F) 359 continue; 360 gctl_error(req, "drive '%s' already exists", d2->name); 361 goto error; 362 } 363 if (gv_find_drive_device(sc, d2->device) != NULL) { 364 gctl_error(req, "device '%s' already configured in " 365 "gvinum", d2->device); 366 goto error; 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 static struct g_geom * 583 gv_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 } 626 627 void 628 gv_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 1039 static 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 1048 DECLARE_GEOM_CLASS(g_vinum_class, g_vinum); 1049 MODULE_VERSION(geom_vinum, 0);
Cache object: 3d43871882dfa24c1ee75341ae07b34e
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