Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/geom/mirror/g_mirror_ctl.c
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1 /*- 2 * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD: releng/7.3/sys/geom/mirror/g_mirror_ctl.c 163888 2006-11-01 22:51:49Z pjd $"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/module.h> 34 #include <sys/lock.h> 35 #include <sys/mutex.h> 36 #include <sys/bio.h> 37 #include <sys/sysctl.h> 38 #include <sys/malloc.h> 39 #include <sys/bitstring.h> 40 #include <vm/uma.h> 41 #include <machine/atomic.h> 42 #include <geom/geom.h> 43 #include <sys/proc.h> 44 #include <sys/kthread.h> 45 #include <geom/mirror/g_mirror.h> 46 47 48 static struct g_mirror_softc * 49 g_mirror_find_device(struct g_class *mp, const char *name) 50 { 51 struct g_mirror_softc *sc; 52 struct g_geom *gp; 53 54 g_topology_lock(); 55 LIST_FOREACH(gp, &mp->geom, geom) { 56 sc = gp->softc; 57 if (sc == NULL) 58 continue; 59 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_DESTROY) != 0) 60 continue; 61 if (strcmp(gp->name, name) == 0 || 62 strcmp(sc->sc_name, name) == 0) { 63 g_topology_unlock(); 64 sx_xlock(&sc->sc_lock); 65 return (sc); 66 } 67 } 68 g_topology_unlock(); 69 return (NULL); 70 } 71 72 static struct g_mirror_disk * 73 g_mirror_find_disk(struct g_mirror_softc *sc, const char *name) 74 { 75 struct g_mirror_disk *disk; 76 77 sx_assert(&sc->sc_lock, SX_XLOCKED); 78 if (strncmp(name, "/dev/", 5) == 0) 79 name += 5; 80 LIST_FOREACH(disk, &sc->sc_disks, d_next) { 81 if (disk->d_consumer == NULL) 82 continue; 83 if (disk->d_consumer->provider == NULL) 84 continue; 85 if (strcmp(disk->d_consumer->provider->name, name) == 0) 86 return (disk); 87 } 88 return (NULL); 89 } 90 91 static void 92 g_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp) 93 { 94 struct g_mirror_softc *sc; 95 struct g_mirror_disk *disk; 96 const char *name, *balancep; 97 intmax_t *slicep; 98 uint32_t slice; 99 uint8_t balance; 100 int *autosync, *noautosync, *failsync, *nofailsync, *hardcode, *dynamic; 101 int *nargs, do_sync = 0, dirty = 1; 102 103 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 104 if (nargs == NULL) { 105 gctl_error(req, "No '%s' argument.", "nargs"); 106 return; 107 } 108 if (*nargs != 1) { 109 gctl_error(req, "Invalid number of arguments."); 110 return; 111 } 112 name = gctl_get_asciiparam(req, "arg0"); 113 if (name == NULL) { 114 gctl_error(req, "No 'arg%u' argument.", 0); 115 return; 116 } 117 balancep = gctl_get_asciiparam(req, "balance"); 118 if (balancep == NULL) { 119 gctl_error(req, "No '%s' argument.", "balance"); 120 return; 121 } 122 autosync = gctl_get_paraml(req, "autosync", sizeof(*autosync)); 123 if (autosync == NULL) { 124 gctl_error(req, "No '%s' argument.", "autosync"); 125 return; 126 } 127 noautosync = gctl_get_paraml(req, "noautosync", sizeof(*noautosync)); 128 if (noautosync == NULL) { 129 gctl_error(req, "No '%s' argument.", "noautosync"); 130 return; 131 } 132 failsync = gctl_get_paraml(req, "failsync", sizeof(*failsync)); 133 if (failsync == NULL) { 134 gctl_error(req, "No '%s' argument.", "failsync"); 135 return; 136 } 137 nofailsync = gctl_get_paraml(req, "nofailsync", sizeof(*nofailsync)); 138 if (nofailsync == NULL) { 139 gctl_error(req, "No '%s' argument.", "nofailsync"); 140 return; 141 } 142 hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode)); 143 if (hardcode == NULL) { 144 gctl_error(req, "No '%s' argument.", "hardcode"); 145 return; 146 } 147 dynamic = gctl_get_paraml(req, "dynamic", sizeof(*dynamic)); 148 if (dynamic == NULL) { 149 gctl_error(req, "No '%s' argument.", "dynamic"); 150 return; 151 } 152 if (*autosync && *noautosync) { 153 gctl_error(req, "'%s' and '%s' specified.", "autosync", 154 "noautosync"); 155 return; 156 } 157 if (*failsync && *nofailsync) { 158 gctl_error(req, "'%s' and '%s' specified.", "failsync", 159 "nofailsync"); 160 return; 161 } 162 if (*hardcode && *dynamic) { 163 gctl_error(req, "'%s' and '%s' specified.", "hardcode", 164 "dynamic"); 165 return; 166 } 167 sc = g_mirror_find_device(mp, name); 168 if (sc == NULL) { 169 gctl_error(req, "No such device: %s.", name); 170 return; 171 } 172 if (strcmp(balancep, "none") == 0) 173 balance = sc->sc_balance; 174 else { 175 if (balance_id(balancep) == -1) { 176 gctl_error(req, "Invalid balance algorithm."); 177 sx_xunlock(&sc->sc_lock); 178 return; 179 } 180 balance = balance_id(balancep); 181 } 182 slicep = gctl_get_paraml(req, "slice", sizeof(*slicep)); 183 if (slicep == NULL) { 184 gctl_error(req, "No '%s' argument.", "slice"); 185 sx_xunlock(&sc->sc_lock); 186 return; 187 } 188 if (*slicep == -1) 189 slice = sc->sc_slice; 190 else 191 slice = *slicep; 192 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) { 193 sx_xunlock(&sc->sc_lock); 194 gctl_error(req, "Not all disks connected. Try 'forget' command " 195 "first."); 196 return; 197 } 198 if (sc->sc_balance == balance && sc->sc_slice == slice && !*autosync && 199 !*noautosync && !*failsync && !*nofailsync && !*hardcode && 200 !*dynamic) { 201 sx_xunlock(&sc->sc_lock); 202 gctl_error(req, "Nothing has changed."); 203 return; 204 } 205 sc->sc_balance = balance; 206 sc->sc_slice = slice; 207 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) { 208 if (*autosync) { 209 sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOAUTOSYNC; 210 do_sync = 1; 211 } 212 } else { 213 if (*noautosync) 214 sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC; 215 } 216 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0) { 217 if (*failsync) 218 sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOFAILSYNC; 219 } else { 220 if (*nofailsync) { 221 sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC; 222 dirty = 0; 223 } 224 } 225 LIST_FOREACH(disk, &sc->sc_disks, d_next) { 226 if (do_sync) { 227 if (disk->d_state == G_MIRROR_DISK_STATE_SYNCHRONIZING) 228 disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC; 229 } 230 if (*hardcode) 231 disk->d_flags |= G_MIRROR_DISK_FLAG_HARDCODED; 232 else if (*dynamic) 233 disk->d_flags &= ~G_MIRROR_DISK_FLAG_HARDCODED; 234 if (!dirty) 235 disk->d_flags &= ~G_MIRROR_DISK_FLAG_DIRTY; 236 g_mirror_update_metadata(disk); 237 if (do_sync) { 238 if (disk->d_state == G_MIRROR_DISK_STATE_STALE) { 239 g_mirror_event_send(disk, 240 G_MIRROR_DISK_STATE_DISCONNECTED, 241 G_MIRROR_EVENT_DONTWAIT); 242 } 243 } 244 } 245 sx_xunlock(&sc->sc_lock); 246 } 247 248 static void 249 g_mirror_ctl_rebuild(struct gctl_req *req, struct g_class *mp) 250 { 251 struct g_mirror_metadata md; 252 struct g_mirror_softc *sc; 253 struct g_mirror_disk *disk; 254 struct g_provider *pp; 255 const char *name; 256 char param[16]; 257 int error, *nargs; 258 u_int i; 259 260 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 261 if (nargs == NULL) { 262 gctl_error(req, "No '%s' argument.", "nargs"); 263 return; 264 } 265 if (*nargs < 2) { 266 gctl_error(req, "Too few arguments."); 267 return; 268 } 269 name = gctl_get_asciiparam(req, "arg0"); 270 if (name == NULL) { 271 gctl_error(req, "No 'arg%u' argument.", 0); 272 return; 273 } 274 sc = g_mirror_find_device(mp, name); 275 if (sc == NULL) { 276 gctl_error(req, "No such device: %s.", name); 277 return; 278 } 279 for (i = 1; i < (u_int)*nargs; i++) { 280 snprintf(param, sizeof(param), "arg%u", i); 281 name = gctl_get_asciiparam(req, param); 282 if (name == NULL) { 283 gctl_error(req, "No 'arg%u' argument.", i); 284 continue; 285 } 286 disk = g_mirror_find_disk(sc, name); 287 if (disk == NULL) { 288 gctl_error(req, "No such provider: %s.", name); 289 continue; 290 } 291 if (g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE) == 1 && 292 disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) { 293 /* 294 * This is the last active disk. There will be nothing 295 * to rebuild it from, so deny this request. 296 */ 297 gctl_error(req, 298 "Provider %s is the last active provider in %s.", 299 name, sc->sc_geom->name); 300 break; 301 } 302 /* 303 * Do rebuild by resetting syncid, disconnecting the disk and 304 * connecting it again. 305 */ 306 disk->d_sync.ds_syncid = 0; 307 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) 308 disk->d_flags |= G_MIRROR_DISK_FLAG_FORCE_SYNC; 309 g_mirror_update_metadata(disk); 310 pp = disk->d_consumer->provider; 311 g_topology_lock(); 312 error = g_mirror_read_metadata(disk->d_consumer, &md); 313 g_topology_unlock(); 314 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DISCONNECTED, 315 G_MIRROR_EVENT_WAIT); 316 if (error != 0) { 317 gctl_error(req, "Cannot read metadata from %s.", 318 pp->name); 319 continue; 320 } 321 error = g_mirror_add_disk(sc, pp, &md); 322 if (error != 0) { 323 gctl_error(req, "Cannot reconnect component %s.", 324 pp->name); 325 continue; 326 } 327 } 328 sx_xunlock(&sc->sc_lock); 329 } 330 331 static void 332 g_mirror_ctl_insert(struct gctl_req *req, struct g_class *mp) 333 { 334 struct g_mirror_softc *sc; 335 struct g_mirror_disk *disk; 336 struct g_mirror_metadata md; 337 struct g_provider *pp; 338 struct g_consumer *cp; 339 intmax_t *priority; 340 const char *name; 341 char param[16]; 342 u_char *sector; 343 u_int i, n; 344 int error, *nargs, *hardcode, *inactive; 345 struct { 346 struct g_provider *provider; 347 struct g_consumer *consumer; 348 } *disks; 349 350 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 351 if (nargs == NULL) { 352 gctl_error(req, "No '%s' argument.", "nargs"); 353 return; 354 } 355 if (*nargs < 2) { 356 gctl_error(req, "Too few arguments."); 357 return; 358 } 359 priority = gctl_get_paraml(req, "priority", sizeof(*priority)); 360 if (priority == NULL) { 361 gctl_error(req, "No '%s' argument.", "priority"); 362 return; 363 } 364 inactive = gctl_get_paraml(req, "inactive", sizeof(*inactive)); 365 if (inactive == NULL) { 366 gctl_error(req, "No '%s' argument.", "inactive"); 367 return; 368 } 369 hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode)); 370 if (hardcode == NULL) { 371 gctl_error(req, "No '%s' argument.", "hardcode"); 372 return; 373 } 374 name = gctl_get_asciiparam(req, "arg0"); 375 if (name == NULL) { 376 gctl_error(req, "No 'arg%u' argument.", 0); 377 return; 378 } 379 sc = g_mirror_find_device(mp, name); 380 if (sc == NULL) { 381 gctl_error(req, "No such device: %s.", name); 382 return; 383 } 384 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) { 385 gctl_error(req, "Not all disks connected."); 386 sx_xunlock(&sc->sc_lock); 387 return; 388 } 389 390 disks = g_malloc(sizeof(*disks) * (*nargs), M_WAITOK | M_ZERO); 391 g_topology_lock(); 392 for (i = 1, n = 0; i < (u_int)*nargs; i++) { 393 snprintf(param, sizeof(param), "arg%u", i); 394 name = gctl_get_asciiparam(req, param); 395 if (name == NULL) { 396 gctl_error(req, "No 'arg%u' argument.", i); 397 continue; 398 } 399 if (g_mirror_find_disk(sc, name) != NULL) { 400 gctl_error(req, "Provider %s already inserted.", name); 401 continue; 402 } 403 if (strncmp(name, "/dev/", 5) == 0) 404 name += 5; 405 pp = g_provider_by_name(name); 406 if (pp == NULL) { 407 gctl_error(req, "Unknown provider %s.", name); 408 continue; 409 } 410 if (sc->sc_provider->mediasize > 411 pp->mediasize - pp->sectorsize) { 412 gctl_error(req, "Provider %s too small.", name); 413 continue; 414 } 415 if ((sc->sc_provider->sectorsize % pp->sectorsize) != 0) { 416 gctl_error(req, "Invalid sectorsize of provider %s.", 417 name); 418 continue; 419 } 420 cp = g_new_consumer(sc->sc_geom); 421 if (g_attach(cp, pp) != 0) { 422 g_destroy_consumer(cp); 423 gctl_error(req, "Cannot attach to provider %s.", name); 424 continue; 425 } 426 if (g_access(cp, 0, 1, 1) != 0) { 427 g_detach(cp); 428 g_destroy_consumer(cp); 429 gctl_error(req, "Cannot access provider %s.", name); 430 continue; 431 } 432 disks[n].provider = pp; 433 disks[n].consumer = cp; 434 n++; 435 } 436 if (n == 0) { 437 g_topology_unlock(); 438 sx_xunlock(&sc->sc_lock); 439 g_free(disks); 440 return; 441 } 442 sc->sc_ndisks += n; 443 again: 444 for (i = 0; i < n; i++) { 445 if (disks[i].consumer == NULL) 446 continue; 447 g_mirror_fill_metadata(sc, NULL, &md); 448 md.md_priority = *priority; 449 if (*inactive) 450 md.md_dflags |= G_MIRROR_DISK_FLAG_INACTIVE; 451 pp = disks[i].provider; 452 if (*hardcode) { 453 strlcpy(md.md_provider, pp->name, 454 sizeof(md.md_provider)); 455 } else { 456 bzero(md.md_provider, sizeof(md.md_provider)); 457 } 458 md.md_provsize = pp->mediasize; 459 sector = g_malloc(pp->sectorsize, M_WAITOK); 460 mirror_metadata_encode(&md, sector); 461 error = g_write_data(disks[i].consumer, 462 pp->mediasize - pp->sectorsize, sector, pp->sectorsize); 463 g_free(sector); 464 if (error != 0) { 465 gctl_error(req, "Cannot store metadata on %s.", 466 pp->name); 467 g_access(disks[i].consumer, 0, -1, -1); 468 g_detach(disks[i].consumer); 469 g_destroy_consumer(disks[i].consumer); 470 disks[i].consumer = NULL; 471 disks[i].provider = NULL; 472 sc->sc_ndisks--; 473 goto again; 474 } 475 } 476 g_topology_unlock(); 477 if (i == 0) { 478 /* All writes failed. */ 479 sx_xunlock(&sc->sc_lock); 480 g_free(disks); 481 return; 482 } 483 LIST_FOREACH(disk, &sc->sc_disks, d_next) { 484 g_mirror_update_metadata(disk); 485 } 486 /* 487 * Release provider and wait for retaste. 488 */ 489 g_topology_lock(); 490 for (i = 0; i < n; i++) { 491 if (disks[i].consumer == NULL) 492 continue; 493 g_access(disks[i].consumer, 0, -1, -1); 494 g_detach(disks[i].consumer); 495 g_destroy_consumer(disks[i].consumer); 496 } 497 g_topology_unlock(); 498 sx_xunlock(&sc->sc_lock); 499 g_free(disks); 500 } 501 502 static void 503 g_mirror_ctl_remove(struct gctl_req *req, struct g_class *mp) 504 { 505 struct g_mirror_softc *sc; 506 struct g_mirror_disk *disk; 507 const char *name; 508 char param[16]; 509 int *nargs; 510 u_int i; 511 512 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 513 if (nargs == NULL) { 514 gctl_error(req, "No '%s' argument.", "nargs"); 515 return; 516 } 517 if (*nargs < 2) { 518 gctl_error(req, "Too few arguments."); 519 return; 520 } 521 name = gctl_get_asciiparam(req, "arg0"); 522 if (name == NULL) { 523 gctl_error(req, "No 'arg%u' argument.", 0); 524 return; 525 } 526 sc = g_mirror_find_device(mp, name); 527 if (sc == NULL) { 528 gctl_error(req, "No such device: %s.", name); 529 return; 530 } 531 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) { 532 sx_xunlock(&sc->sc_lock); 533 gctl_error(req, "Not all disks connected. Try 'forget' command " 534 "first."); 535 return; 536 } 537 for (i = 1; i < (u_int)*nargs; i++) { 538 snprintf(param, sizeof(param), "arg%u", i); 539 name = gctl_get_asciiparam(req, param); 540 if (name == NULL) { 541 gctl_error(req, "No 'arg%u' argument.", i); 542 continue; 543 } 544 disk = g_mirror_find_disk(sc, name); 545 if (disk == NULL) { 546 gctl_error(req, "No such provider: %s.", name); 547 continue; 548 } 549 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DESTROY, 550 G_MIRROR_EVENT_DONTWAIT); 551 } 552 sx_xunlock(&sc->sc_lock); 553 } 554 555 static void 556 g_mirror_ctl_deactivate(struct gctl_req *req, struct g_class *mp) 557 { 558 struct g_mirror_softc *sc; 559 struct g_mirror_disk *disk; 560 const char *name; 561 char param[16]; 562 int *nargs; 563 u_int i; 564 565 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 566 if (nargs == NULL) { 567 gctl_error(req, "No '%s' argument.", "nargs"); 568 return; 569 } 570 if (*nargs < 2) { 571 gctl_error(req, "Too few arguments."); 572 return; 573 } 574 name = gctl_get_asciiparam(req, "arg0"); 575 if (name == NULL) { 576 gctl_error(req, "No 'arg%u' argument.", 0); 577 return; 578 } 579 sc = g_mirror_find_device(mp, name); 580 if (sc == NULL) { 581 gctl_error(req, "No such device: %s.", name); 582 return; 583 } 584 for (i = 1; i < (u_int)*nargs; i++) { 585 snprintf(param, sizeof(param), "arg%u", i); 586 name = gctl_get_asciiparam(req, param); 587 if (name == NULL) { 588 gctl_error(req, "No 'arg%u' argument.", i); 589 continue; 590 } 591 disk = g_mirror_find_disk(sc, name); 592 if (disk == NULL) { 593 gctl_error(req, "No such provider: %s.", name); 594 continue; 595 } 596 disk->d_flags |= G_MIRROR_DISK_FLAG_INACTIVE; 597 disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC; 598 g_mirror_update_metadata(disk); 599 sc->sc_bump_id |= G_MIRROR_BUMP_SYNCID; 600 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DISCONNECTED, 601 G_MIRROR_EVENT_DONTWAIT); 602 } 603 sx_xunlock(&sc->sc_lock); 604 } 605 606 static void 607 g_mirror_ctl_forget(struct gctl_req *req, struct g_class *mp) 608 { 609 struct g_mirror_softc *sc; 610 struct g_mirror_disk *disk; 611 const char *name; 612 char param[16]; 613 int *nargs; 614 u_int i; 615 616 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 617 if (nargs == NULL) { 618 gctl_error(req, "No '%s' argument.", "nargs"); 619 return; 620 } 621 if (*nargs < 1) { 622 gctl_error(req, "Missing device(s)."); 623 return; 624 } 625 626 for (i = 0; i < (u_int)*nargs; i++) { 627 snprintf(param, sizeof(param), "arg%u", i); 628 name = gctl_get_asciiparam(req, param); 629 if (name == NULL) { 630 gctl_error(req, "No 'arg%u' argument.", i); 631 return; 632 } 633 sc = g_mirror_find_device(mp, name); 634 if (sc == NULL) { 635 gctl_error(req, "No such device: %s.", name); 636 return; 637 } 638 if (g_mirror_ndisks(sc, -1) == sc->sc_ndisks) { 639 sx_xunlock(&sc->sc_lock); 640 G_MIRROR_DEBUG(1, 641 "All disks connected in %s, skipping.", 642 sc->sc_name); 643 continue; 644 } 645 sc->sc_ndisks = g_mirror_ndisks(sc, -1); 646 LIST_FOREACH(disk, &sc->sc_disks, d_next) { 647 g_mirror_update_metadata(disk); 648 } 649 sx_xunlock(&sc->sc_lock); 650 } 651 } 652 653 static void 654 g_mirror_ctl_stop(struct gctl_req *req, struct g_class *mp) 655 { 656 struct g_mirror_softc *sc; 657 int *force, *nargs, error; 658 const char *name; 659 char param[16]; 660 u_int i; 661 int how; 662 663 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 664 if (nargs == NULL) { 665 gctl_error(req, "No '%s' argument.", "nargs"); 666 return; 667 } 668 if (*nargs < 1) { 669 gctl_error(req, "Missing device(s)."); 670 return; 671 } 672 force = gctl_get_paraml(req, "force", sizeof(*force)); 673 if (force == NULL) { 674 gctl_error(req, "No '%s' argument.", "force"); 675 return; 676 } 677 if (*force) 678 how = G_MIRROR_DESTROY_HARD; 679 else 680 how = G_MIRROR_DESTROY_SOFT; 681 682 for (i = 0; i < (u_int)*nargs; i++) { 683 snprintf(param, sizeof(param), "arg%u", i); 684 name = gctl_get_asciiparam(req, param); 685 if (name == NULL) { 686 gctl_error(req, "No 'arg%u' argument.", i); 687 return; 688 } 689 sc = g_mirror_find_device(mp, name); 690 if (sc == NULL) { 691 gctl_error(req, "No such device: %s.", name); 692 return; 693 } 694 g_cancel_event(sc); 695 error = g_mirror_destroy(sc, how); 696 if (error != 0) { 697 gctl_error(req, "Cannot destroy device %s (error=%d).", 698 sc->sc_geom->name, error); 699 sx_xunlock(&sc->sc_lock); 700 return; 701 } 702 /* No need to unlock, because lock is already dead. */ 703 } 704 } 705 706 void 707 g_mirror_config(struct gctl_req *req, struct g_class *mp, const char *verb) 708 { 709 uint32_t *version; 710 711 g_topology_assert(); 712 713 version = gctl_get_paraml(req, "version", sizeof(*version)); 714 if (version == NULL) { 715 gctl_error(req, "No '%s' argument.", "version"); 716 return; 717 } 718 if (*version != G_MIRROR_VERSION) { 719 gctl_error(req, "Userland and kernel parts are out of sync."); 720 return; 721 } 722 723 g_topology_unlock(); 724 if (strcmp(verb, "configure") == 0) 725 g_mirror_ctl_configure(req, mp); 726 else if (strcmp(verb, "rebuild") == 0) 727 g_mirror_ctl_rebuild(req, mp); 728 else if (strcmp(verb, "insert") == 0) 729 g_mirror_ctl_insert(req, mp); 730 else if (strcmp(verb, "remove") == 0) 731 g_mirror_ctl_remove(req, mp); 732 else if (strcmp(verb, "deactivate") == 0) 733 g_mirror_ctl_deactivate(req, mp); 734 else if (strcmp(verb, "forget") == 0) 735 g_mirror_ctl_forget(req, mp); 736 else if (strcmp(verb, "stop") == 0) 737 g_mirror_ctl_stop(req, mp); 738 else 739 gctl_error(req, "Unknown verb."); 740 g_topology_lock(); 741 }
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