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) 2004-2009 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/10.0/sys/geom/mirror/g_mirror_ctl.c 235600 2012-05-18 09:22:21Z ae $"); 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, *prov; 97 intmax_t *slicep, *priority; 98 uint32_t slice; 99 uint8_t balance; 100 int *autosync, *noautosync, *failsync, *nofailsync, *hardcode, *dynamic; 101 int *nargs, do_sync = 0, dirty = 1, do_priority = 0; 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 && *nargs != 2) { 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 priority = gctl_get_paraml(req, "priority", sizeof(*priority)); 153 if (priority == NULL) { 154 gctl_error(req, "No '%s' argument.", "priority"); 155 return; 156 } 157 if (*priority < -1 || *priority > 255) { 158 gctl_error(req, "Priority range is 0 to 255, %jd given", 159 *priority); 160 return; 161 } 162 /* 163 * Since we have a priority, we also need a provider now. 164 * Note: be WARNS safe, by always assigning prov and only throw an 165 * error if *priority != -1. 166 */ 167 prov = gctl_get_asciiparam(req, "arg1"); 168 if (*priority > -1) { 169 if (prov == NULL) { 170 gctl_error(req, "Priority needs a disk name"); 171 return; 172 } 173 do_priority = 1; 174 } 175 if (*autosync && *noautosync) { 176 gctl_error(req, "'%s' and '%s' specified.", "autosync", 177 "noautosync"); 178 return; 179 } 180 if (*failsync && *nofailsync) { 181 gctl_error(req, "'%s' and '%s' specified.", "failsync", 182 "nofailsync"); 183 return; 184 } 185 if (*hardcode && *dynamic) { 186 gctl_error(req, "'%s' and '%s' specified.", "hardcode", 187 "dynamic"); 188 return; 189 } 190 sc = g_mirror_find_device(mp, name); 191 if (sc == NULL) { 192 gctl_error(req, "No such device: %s.", name); 193 return; 194 } 195 if (*balancep == '\0') 196 balance = sc->sc_balance; 197 else { 198 if (balance_id(balancep) == -1) { 199 gctl_error(req, "Invalid balance algorithm."); 200 sx_xunlock(&sc->sc_lock); 201 return; 202 } 203 balance = balance_id(balancep); 204 } 205 slicep = gctl_get_paraml(req, "slice", sizeof(*slicep)); 206 if (slicep == NULL) { 207 gctl_error(req, "No '%s' argument.", "slice"); 208 sx_xunlock(&sc->sc_lock); 209 return; 210 } 211 if (*slicep == -1) 212 slice = sc->sc_slice; 213 else 214 slice = *slicep; 215 /* Enforce usage() of -p not allowing any other options. */ 216 if (do_priority && (*autosync || *noautosync || *failsync || 217 *nofailsync || *hardcode || *dynamic || *slicep != -1 || 218 *balancep != '\0')) { 219 sx_xunlock(&sc->sc_lock); 220 gctl_error(req, "only -p accepted when setting priority"); 221 return; 222 } 223 if (sc->sc_balance == balance && sc->sc_slice == slice && !*autosync && 224 !*noautosync && !*failsync && !*nofailsync && !*hardcode && 225 !*dynamic && !do_priority) { 226 sx_xunlock(&sc->sc_lock); 227 gctl_error(req, "Nothing has changed."); 228 return; 229 } 230 if ((!do_priority && *nargs != 1) || (do_priority && *nargs != 2)) { 231 sx_xunlock(&sc->sc_lock); 232 gctl_error(req, "Invalid number of arguments."); 233 return; 234 } 235 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) { 236 sx_xunlock(&sc->sc_lock); 237 gctl_error(req, "Not all disks connected. Try 'forget' command " 238 "first."); 239 return; 240 } 241 sc->sc_balance = balance; 242 sc->sc_slice = slice; 243 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) { 244 if (*autosync) { 245 sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOAUTOSYNC; 246 do_sync = 1; 247 } 248 } else { 249 if (*noautosync) 250 sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC; 251 } 252 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0) { 253 if (*failsync) 254 sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOFAILSYNC; 255 } else { 256 if (*nofailsync) { 257 sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC; 258 dirty = 0; 259 } 260 } 261 LIST_FOREACH(disk, &sc->sc_disks, d_next) { 262 /* 263 * Handle priority first, since we only need one disk, do one 264 * operation on it and then we're done. No need to check other 265 * flags, as usage doesn't allow it. 266 */ 267 if (do_priority) { 268 if (strcmp(disk->d_name, prov) == 0) { 269 if (disk->d_priority == *priority) 270 gctl_error(req, "Nothing has changed."); 271 else { 272 disk->d_priority = *priority; 273 g_mirror_update_metadata(disk); 274 } 275 break; 276 } 277 continue; 278 } 279 if (do_sync) { 280 if (disk->d_state == G_MIRROR_DISK_STATE_SYNCHRONIZING) 281 disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC; 282 } 283 if (*hardcode) 284 disk->d_flags |= G_MIRROR_DISK_FLAG_HARDCODED; 285 else if (*dynamic) 286 disk->d_flags &= ~G_MIRROR_DISK_FLAG_HARDCODED; 287 if (!dirty) 288 disk->d_flags &= ~G_MIRROR_DISK_FLAG_DIRTY; 289 g_mirror_update_metadata(disk); 290 if (do_sync) { 291 if (disk->d_state == G_MIRROR_DISK_STATE_STALE) { 292 g_mirror_event_send(disk, 293 G_MIRROR_DISK_STATE_DISCONNECTED, 294 G_MIRROR_EVENT_DONTWAIT); 295 } 296 } 297 } 298 sx_xunlock(&sc->sc_lock); 299 } 300 301 static void 302 g_mirror_ctl_rebuild(struct gctl_req *req, struct g_class *mp) 303 { 304 struct g_mirror_metadata md; 305 struct g_mirror_softc *sc; 306 struct g_mirror_disk *disk; 307 struct g_provider *pp; 308 const char *name; 309 char param[16]; 310 int error, *nargs; 311 u_int i; 312 313 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 314 if (nargs == NULL) { 315 gctl_error(req, "No '%s' argument.", "nargs"); 316 return; 317 } 318 if (*nargs < 2) { 319 gctl_error(req, "Too few arguments."); 320 return; 321 } 322 name = gctl_get_asciiparam(req, "arg0"); 323 if (name == NULL) { 324 gctl_error(req, "No 'arg%u' argument.", 0); 325 return; 326 } 327 sc = g_mirror_find_device(mp, name); 328 if (sc == NULL) { 329 gctl_error(req, "No such device: %s.", name); 330 return; 331 } 332 for (i = 1; i < (u_int)*nargs; i++) { 333 snprintf(param, sizeof(param), "arg%u", i); 334 name = gctl_get_asciiparam(req, param); 335 if (name == NULL) { 336 gctl_error(req, "No 'arg%u' argument.", i); 337 continue; 338 } 339 disk = g_mirror_find_disk(sc, name); 340 if (disk == NULL) { 341 gctl_error(req, "No such provider: %s.", name); 342 continue; 343 } 344 if (g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE) == 1 && 345 disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) { 346 /* 347 * This is the last active disk. There will be nothing 348 * to rebuild it from, so deny this request. 349 */ 350 gctl_error(req, 351 "Provider %s is the last active provider in %s.", 352 name, sc->sc_geom->name); 353 break; 354 } 355 /* 356 * Do rebuild by resetting syncid, disconnecting the disk and 357 * connecting it again. 358 */ 359 disk->d_sync.ds_syncid = 0; 360 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) 361 disk->d_flags |= G_MIRROR_DISK_FLAG_FORCE_SYNC; 362 g_mirror_update_metadata(disk); 363 pp = disk->d_consumer->provider; 364 g_topology_lock(); 365 error = g_mirror_read_metadata(disk->d_consumer, &md); 366 g_topology_unlock(); 367 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DISCONNECTED, 368 G_MIRROR_EVENT_WAIT); 369 if (error != 0) { 370 gctl_error(req, "Cannot read metadata from %s.", 371 pp->name); 372 continue; 373 } 374 error = g_mirror_add_disk(sc, pp, &md); 375 if (error != 0) { 376 gctl_error(req, "Cannot reconnect component %s.", 377 pp->name); 378 continue; 379 } 380 } 381 sx_xunlock(&sc->sc_lock); 382 } 383 384 static void 385 g_mirror_ctl_insert(struct gctl_req *req, struct g_class *mp) 386 { 387 struct g_mirror_softc *sc; 388 struct g_mirror_disk *disk; 389 struct g_mirror_metadata md; 390 struct g_provider *pp; 391 struct g_consumer *cp; 392 intmax_t *priority; 393 const char *name; 394 char param[16]; 395 u_char *sector; 396 u_int i, n; 397 int error, *nargs, *hardcode, *inactive; 398 struct { 399 struct g_provider *provider; 400 struct g_consumer *consumer; 401 } *disks; 402 403 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 404 if (nargs == NULL) { 405 gctl_error(req, "No '%s' argument.", "nargs"); 406 return; 407 } 408 if (*nargs < 2) { 409 gctl_error(req, "Too few arguments."); 410 return; 411 } 412 priority = gctl_get_paraml(req, "priority", sizeof(*priority)); 413 if (priority == NULL) { 414 gctl_error(req, "No '%s' argument.", "priority"); 415 return; 416 } 417 inactive = gctl_get_paraml(req, "inactive", sizeof(*inactive)); 418 if (inactive == NULL) { 419 gctl_error(req, "No '%s' argument.", "inactive"); 420 return; 421 } 422 hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode)); 423 if (hardcode == NULL) { 424 gctl_error(req, "No '%s' argument.", "hardcode"); 425 return; 426 } 427 name = gctl_get_asciiparam(req, "arg0"); 428 if (name == NULL) { 429 gctl_error(req, "No 'arg%u' argument.", 0); 430 return; 431 } 432 sc = g_mirror_find_device(mp, name); 433 if (sc == NULL) { 434 gctl_error(req, "No such device: %s.", name); 435 return; 436 } 437 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) { 438 gctl_error(req, "Not all disks connected."); 439 sx_xunlock(&sc->sc_lock); 440 return; 441 } 442 443 disks = g_malloc(sizeof(*disks) * (*nargs), M_WAITOK | M_ZERO); 444 g_topology_lock(); 445 for (i = 1, n = 0; i < (u_int)*nargs; i++) { 446 snprintf(param, sizeof(param), "arg%u", i); 447 name = gctl_get_asciiparam(req, param); 448 if (name == NULL) { 449 gctl_error(req, "No 'arg%u' argument.", i); 450 continue; 451 } 452 if (g_mirror_find_disk(sc, name) != NULL) { 453 gctl_error(req, "Provider %s already inserted.", name); 454 continue; 455 } 456 if (strncmp(name, "/dev/", 5) == 0) 457 name += 5; 458 pp = g_provider_by_name(name); 459 if (pp == NULL) { 460 gctl_error(req, "Unknown provider %s.", name); 461 continue; 462 } 463 if (sc->sc_provider->mediasize > 464 pp->mediasize - pp->sectorsize) { 465 gctl_error(req, "Provider %s too small.", name); 466 continue; 467 } 468 if ((sc->sc_provider->sectorsize % pp->sectorsize) != 0) { 469 gctl_error(req, "Invalid sectorsize of provider %s.", 470 name); 471 continue; 472 } 473 cp = g_new_consumer(sc->sc_geom); 474 if (g_attach(cp, pp) != 0) { 475 g_destroy_consumer(cp); 476 gctl_error(req, "Cannot attach to provider %s.", name); 477 continue; 478 } 479 if (g_access(cp, 0, 1, 1) != 0) { 480 g_detach(cp); 481 g_destroy_consumer(cp); 482 gctl_error(req, "Cannot access provider %s.", name); 483 continue; 484 } 485 disks[n].provider = pp; 486 disks[n].consumer = cp; 487 n++; 488 } 489 if (n == 0) { 490 g_topology_unlock(); 491 sx_xunlock(&sc->sc_lock); 492 g_free(disks); 493 return; 494 } 495 sc->sc_ndisks += n; 496 again: 497 for (i = 0; i < n; i++) { 498 if (disks[i].consumer == NULL) 499 continue; 500 g_mirror_fill_metadata(sc, NULL, &md); 501 md.md_priority = *priority; 502 if (*inactive) 503 md.md_dflags |= G_MIRROR_DISK_FLAG_INACTIVE; 504 pp = disks[i].provider; 505 if (*hardcode) { 506 strlcpy(md.md_provider, pp->name, 507 sizeof(md.md_provider)); 508 } else { 509 bzero(md.md_provider, sizeof(md.md_provider)); 510 } 511 md.md_provsize = pp->mediasize; 512 sector = g_malloc(pp->sectorsize, M_WAITOK); 513 mirror_metadata_encode(&md, sector); 514 error = g_write_data(disks[i].consumer, 515 pp->mediasize - pp->sectorsize, sector, pp->sectorsize); 516 g_free(sector); 517 if (error != 0) { 518 gctl_error(req, "Cannot store metadata on %s.", 519 pp->name); 520 g_access(disks[i].consumer, 0, -1, -1); 521 g_detach(disks[i].consumer); 522 g_destroy_consumer(disks[i].consumer); 523 disks[i].consumer = NULL; 524 disks[i].provider = NULL; 525 sc->sc_ndisks--; 526 goto again; 527 } 528 } 529 g_topology_unlock(); 530 if (i == 0) { 531 /* All writes failed. */ 532 sx_xunlock(&sc->sc_lock); 533 g_free(disks); 534 return; 535 } 536 LIST_FOREACH(disk, &sc->sc_disks, d_next) { 537 g_mirror_update_metadata(disk); 538 } 539 /* 540 * Release provider and wait for retaste. 541 */ 542 g_topology_lock(); 543 for (i = 0; i < n; i++) { 544 if (disks[i].consumer == NULL) 545 continue; 546 g_access(disks[i].consumer, 0, -1, -1); 547 g_detach(disks[i].consumer); 548 g_destroy_consumer(disks[i].consumer); 549 } 550 g_topology_unlock(); 551 sx_xunlock(&sc->sc_lock); 552 g_free(disks); 553 } 554 555 static void 556 g_mirror_ctl_remove(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, active; 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 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) { 585 sx_xunlock(&sc->sc_lock); 586 gctl_error(req, "Not all disks connected. Try 'forget' command " 587 "first."); 588 return; 589 } 590 active = g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE); 591 for (i = 1; i < (u_int)*nargs; i++) { 592 snprintf(param, sizeof(param), "arg%u", i); 593 name = gctl_get_asciiparam(req, param); 594 if (name == NULL) { 595 gctl_error(req, "No 'arg%u' argument.", i); 596 continue; 597 } 598 disk = g_mirror_find_disk(sc, name); 599 if (disk == NULL) { 600 gctl_error(req, "No such provider: %s.", name); 601 continue; 602 } 603 if (disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) { 604 if (active > 1) 605 active--; 606 else { 607 gctl_error(req, "%s: Can't remove the last " 608 "ACTIVE component %s.", sc->sc_geom->name, 609 name); 610 continue; 611 } 612 } 613 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DESTROY, 614 G_MIRROR_EVENT_DONTWAIT); 615 } 616 sx_xunlock(&sc->sc_lock); 617 } 618 619 static void 620 g_mirror_ctl_deactivate(struct gctl_req *req, struct g_class *mp) 621 { 622 struct g_mirror_softc *sc; 623 struct g_mirror_disk *disk; 624 const char *name; 625 char param[16]; 626 int *nargs; 627 u_int i; 628 629 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 630 if (nargs == NULL) { 631 gctl_error(req, "No '%s' argument.", "nargs"); 632 return; 633 } 634 if (*nargs < 2) { 635 gctl_error(req, "Too few arguments."); 636 return; 637 } 638 name = gctl_get_asciiparam(req, "arg0"); 639 if (name == NULL) { 640 gctl_error(req, "No 'arg%u' argument.", 0); 641 return; 642 } 643 sc = g_mirror_find_device(mp, name); 644 if (sc == NULL) { 645 gctl_error(req, "No such device: %s.", name); 646 return; 647 } 648 for (i = 1; i < (u_int)*nargs; i++) { 649 snprintf(param, sizeof(param), "arg%u", i); 650 name = gctl_get_asciiparam(req, param); 651 if (name == NULL) { 652 gctl_error(req, "No 'arg%u' argument.", i); 653 continue; 654 } 655 disk = g_mirror_find_disk(sc, name); 656 if (disk == NULL) { 657 gctl_error(req, "No such provider: %s.", name); 658 continue; 659 } 660 disk->d_flags |= G_MIRROR_DISK_FLAG_INACTIVE; 661 disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC; 662 g_mirror_update_metadata(disk); 663 sc->sc_bump_id |= G_MIRROR_BUMP_SYNCID; 664 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DISCONNECTED, 665 G_MIRROR_EVENT_DONTWAIT); 666 } 667 sx_xunlock(&sc->sc_lock); 668 } 669 670 static void 671 g_mirror_ctl_forget(struct gctl_req *req, struct g_class *mp) 672 { 673 struct g_mirror_softc *sc; 674 struct g_mirror_disk *disk; 675 const char *name; 676 char param[16]; 677 int *nargs; 678 u_int i; 679 680 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 681 if (nargs == NULL) { 682 gctl_error(req, "No '%s' argument.", "nargs"); 683 return; 684 } 685 if (*nargs < 1) { 686 gctl_error(req, "Missing device(s)."); 687 return; 688 } 689 690 for (i = 0; i < (u_int)*nargs; i++) { 691 snprintf(param, sizeof(param), "arg%u", i); 692 name = gctl_get_asciiparam(req, param); 693 if (name == NULL) { 694 gctl_error(req, "No 'arg%u' argument.", i); 695 return; 696 } 697 sc = g_mirror_find_device(mp, name); 698 if (sc == NULL) { 699 gctl_error(req, "No such device: %s.", name); 700 return; 701 } 702 if (g_mirror_ndisks(sc, -1) == sc->sc_ndisks) { 703 sx_xunlock(&sc->sc_lock); 704 G_MIRROR_DEBUG(1, 705 "All disks connected in %s, skipping.", 706 sc->sc_name); 707 continue; 708 } 709 sc->sc_ndisks = g_mirror_ndisks(sc, -1); 710 LIST_FOREACH(disk, &sc->sc_disks, d_next) { 711 g_mirror_update_metadata(disk); 712 } 713 sx_xunlock(&sc->sc_lock); 714 } 715 } 716 717 static void 718 g_mirror_ctl_stop(struct gctl_req *req, struct g_class *mp) 719 { 720 struct g_mirror_softc *sc; 721 int *force, *nargs, error; 722 const char *name; 723 char param[16]; 724 u_int i; 725 int how; 726 727 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 728 if (nargs == NULL) { 729 gctl_error(req, "No '%s' argument.", "nargs"); 730 return; 731 } 732 if (*nargs < 1) { 733 gctl_error(req, "Missing device(s)."); 734 return; 735 } 736 force = gctl_get_paraml(req, "force", sizeof(*force)); 737 if (force == NULL) { 738 gctl_error(req, "No '%s' argument.", "force"); 739 return; 740 } 741 if (*force) 742 how = G_MIRROR_DESTROY_HARD; 743 else 744 how = G_MIRROR_DESTROY_SOFT; 745 746 for (i = 0; i < (u_int)*nargs; i++) { 747 snprintf(param, sizeof(param), "arg%u", i); 748 name = gctl_get_asciiparam(req, param); 749 if (name == NULL) { 750 gctl_error(req, "No 'arg%u' argument.", i); 751 return; 752 } 753 sc = g_mirror_find_device(mp, name); 754 if (sc == NULL) { 755 gctl_error(req, "No such device: %s.", name); 756 return; 757 } 758 g_cancel_event(sc); 759 error = g_mirror_destroy(sc, how); 760 if (error != 0) { 761 gctl_error(req, "Cannot destroy device %s (error=%d).", 762 sc->sc_geom->name, error); 763 sx_xunlock(&sc->sc_lock); 764 return; 765 } 766 /* No need to unlock, because lock is already dead. */ 767 } 768 } 769 770 void 771 g_mirror_config(struct gctl_req *req, struct g_class *mp, const char *verb) 772 { 773 uint32_t *version; 774 775 g_topology_assert(); 776 777 version = gctl_get_paraml(req, "version", sizeof(*version)); 778 if (version == NULL) { 779 gctl_error(req, "No '%s' argument.", "version"); 780 return; 781 } 782 if (*version != G_MIRROR_VERSION) { 783 gctl_error(req, "Userland and kernel parts are out of sync."); 784 return; 785 } 786 787 g_topology_unlock(); 788 if (strcmp(verb, "configure") == 0) 789 g_mirror_ctl_configure(req, mp); 790 else if (strcmp(verb, "rebuild") == 0) 791 g_mirror_ctl_rebuild(req, mp); 792 else if (strcmp(verb, "insert") == 0) 793 g_mirror_ctl_insert(req, mp); 794 else if (strcmp(verb, "remove") == 0) 795 g_mirror_ctl_remove(req, mp); 796 else if (strcmp(verb, "deactivate") == 0) 797 g_mirror_ctl_deactivate(req, mp); 798 else if (strcmp(verb, "forget") == 0) 799 g_mirror_ctl_forget(req, mp); 800 else if (strcmp(verb, "stop") == 0) 801 g_mirror_ctl_stop(req, mp); 802 else 803 gctl_error(req, "Unknown verb."); 804 g_topology_lock(); 805 }
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