1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 #include <ctype.h> 27 #include <errno.h> 28 #include <devid.h> 29 #include <fcntl.h> 30 #include <libintl.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <strings.h> 34 #include <unistd.h> 35 #include <sys/efi_partition.h> 36 #include <sys/vtoc.h> 37 #include <sys/zfs_ioctl.h> 38 #include <dlfcn.h> 39 40 #include "zfs_namecheck.h" 41 #include "zfs_prop.h" 42 #include "libzfs_impl.h" 43 #include "zfs_comutil.h" 44 45 static int read_efi_label(nvlist_t *config, diskaddr_t *sb); 46 47 #if defined(__i386) || defined(__amd64) 48 #define BOOTCMD "installgrub(1M)" 49 #else 50 #define BOOTCMD "installboot(1M)" 51 #endif 52 53 #define DISK_ROOT "/dev/dsk" 54 #define RDISK_ROOT "/dev/rdsk" 55 #define BACKUP_SLICE "s2" 56 57 /* 58 * ==================================================================== 59 * zpool property functions 60 * ==================================================================== 61 */ 62 63 static int 64 zpool_get_all_props(zpool_handle_t *zhp) 65 { 66 zfs_cmd_t zc = { 0 }; 67 libzfs_handle_t *hdl = zhp->zpool_hdl; 68 69 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 70 71 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 72 return (-1); 73 74 while (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) { 75 if (errno == ENOMEM) { 76 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 77 zcmd_free_nvlists(&zc); 78 return (-1); 79 } 80 } else { 81 zcmd_free_nvlists(&zc); 82 return (-1); 83 } 84 } 85 86 if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zpool_props) != 0) { 87 zcmd_free_nvlists(&zc); 88 return (-1); 89 } 90 91 zcmd_free_nvlists(&zc); 92 93 return (0); 94 } 95 96 static int 97 zpool_props_refresh(zpool_handle_t *zhp) 98 { 99 nvlist_t *old_props; 100 101 old_props = zhp->zpool_props; 102 103 if (zpool_get_all_props(zhp) != 0) 104 return (-1); 105 106 nvlist_free(old_props); 107 return (0); 108 } 109 110 static char * 111 zpool_get_prop_string(zpool_handle_t *zhp, zpool_prop_t prop, 112 zprop_source_t *src) 113 { 114 nvlist_t *nv, *nvl; 115 uint64_t ival; 116 char *value; 117 zprop_source_t source; 118 119 nvl = zhp->zpool_props; 120 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) { 121 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &ival) == 0); 122 source = ival; 123 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 124 } else { 125 source = ZPROP_SRC_DEFAULT; 126 if ((value = (char *)zpool_prop_default_string(prop)) == NULL) 127 value = "-"; 128 } 129 130 if (src) 131 *src = source; 132 133 return (value); 134 } 135 136 uint64_t 137 zpool_get_prop_int(zpool_handle_t *zhp, zpool_prop_t prop, zprop_source_t *src) 138 { 139 nvlist_t *nv, *nvl; 140 uint64_t value; 141 zprop_source_t source; 142 143 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp)) { 144 /* 145 * zpool_get_all_props() has most likely failed because 146 * the pool is faulted, but if all we need is the top level 147 * vdev's guid then get it from the zhp config nvlist. 148 */ 149 if ((prop == ZPOOL_PROP_GUID) && 150 (nvlist_lookup_nvlist(zhp->zpool_config, 151 ZPOOL_CONFIG_VDEV_TREE, &nv) == 0) && 152 (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value) 153 == 0)) { 154 return (value); 155 } 156 return (zpool_prop_default_numeric(prop)); 157 } 158 159 nvl = zhp->zpool_props; 160 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) { 161 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &value) == 0); 162 source = value; 163 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 164 } else { 165 source = ZPROP_SRC_DEFAULT; 166 value = zpool_prop_default_numeric(prop); 167 } 168 169 if (src) 170 *src = source; 171 172 return (value); 173 } 174 175 /* 176 * Map VDEV STATE to printed strings. 177 */ 178 char * 179 zpool_state_to_name(vdev_state_t state, vdev_aux_t aux) 180 { 181 switch (state) { 182 case VDEV_STATE_CLOSED: 183 case VDEV_STATE_OFFLINE: 184 return (gettext("OFFLINE")); 185 case VDEV_STATE_REMOVED: 186 return (gettext("REMOVED")); 187 case VDEV_STATE_CANT_OPEN: 188 if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG) 189 return (gettext("FAULTED")); 190 else if (aux == VDEV_AUX_SPLIT_POOL) 191 return (gettext("SPLIT")); 192 else 193 return (gettext("UNAVAIL")); 194 case VDEV_STATE_FAULTED: 195 return (gettext("FAULTED")); 196 case VDEV_STATE_DEGRADED: 197 return (gettext("DEGRADED")); 198 case VDEV_STATE_HEALTHY: 199 return (gettext("ONLINE")); 200 } 201 202 return (gettext("UNKNOWN")); 203 } 204 205 /* 206 * Get a zpool property value for 'prop' and return the value in 207 * a pre-allocated buffer. 208 */ 209 int 210 zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len, 211 zprop_source_t *srctype) 212 { 213 uint64_t intval; 214 const char *strval; 215 zprop_source_t src = ZPROP_SRC_NONE; 216 nvlist_t *nvroot; 217 vdev_stat_t *vs; 218 uint_t vsc; 219 220 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) { 221 switch (prop) { 222 case ZPOOL_PROP_NAME: 223 (void) strlcpy(buf, zpool_get_name(zhp), len); 224 break; 225 226 case ZPOOL_PROP_HEALTH: 227 (void) strlcpy(buf, "FAULTED", len); 228 break; 229 230 case ZPOOL_PROP_GUID: 231 intval = zpool_get_prop_int(zhp, prop, &src); 232 (void) snprintf(buf, len, "%llu", intval); 233 break; 234 235 case ZPOOL_PROP_ALTROOT: 236 case ZPOOL_PROP_CACHEFILE: 237 if (zhp->zpool_props != NULL || 238 zpool_get_all_props(zhp) == 0) { 239 (void) strlcpy(buf, 240 zpool_get_prop_string(zhp, prop, &src), 241 len); 242 if (srctype != NULL) 243 *srctype = src; 244 return (0); 245 } 246 /* FALLTHROUGH */ 247 default: 248 (void) strlcpy(buf, "-", len); 249 break; 250 } 251 252 if (srctype != NULL) 253 *srctype = src; 254 return (0); 255 } 256 257 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) && 258 prop != ZPOOL_PROP_NAME) 259 return (-1); 260 261 switch (zpool_prop_get_type(prop)) { 262 case PROP_TYPE_STRING: 263 (void) strlcpy(buf, zpool_get_prop_string(zhp, prop, &src), 264 len); 265 break; 266 267 case PROP_TYPE_NUMBER: 268 intval = zpool_get_prop_int(zhp, prop, &src); 269 270 switch (prop) { 271 case ZPOOL_PROP_SIZE: 272 case ZPOOL_PROP_ALLOCATED: 273 case ZPOOL_PROP_FREE: 274 (void) zfs_nicenum(intval, buf, len); 275 break; 276 277 case ZPOOL_PROP_CAPACITY: 278 (void) snprintf(buf, len, "%llu%%", 279 (u_longlong_t)intval); 280 break; 281 282 case ZPOOL_PROP_DEDUPRATIO: 283 (void) snprintf(buf, len, "%llu.%02llux", 284 (u_longlong_t)(intval / 100), 285 (u_longlong_t)(intval % 100)); 286 break; 287 288 case ZPOOL_PROP_HEALTH: 289 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 290 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 291 verify(nvlist_lookup_uint64_array(nvroot, 292 ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) 293 == 0); 294 295 (void) strlcpy(buf, zpool_state_to_name(intval, 296 vs->vs_aux), len); 297 break; 298 default: 299 (void) snprintf(buf, len, "%llu", intval); 300 } 301 break; 302 303 case PROP_TYPE_INDEX: 304 intval = zpool_get_prop_int(zhp, prop, &src); 305 if (zpool_prop_index_to_string(prop, intval, &strval) 306 != 0) 307 return (-1); 308 (void) strlcpy(buf, strval, len); 309 break; 310 311 default: 312 abort(); 313 } 314 315 if (srctype) 316 *srctype = src; 317 318 return (0); 319 } 320 321 /* 322 * Check if the bootfs name has the same pool name as it is set to. 323 * Assuming bootfs is a valid dataset name. 324 */ 325 static boolean_t 326 bootfs_name_valid(const char *pool, char *bootfs) 327 { 328 int len = strlen(pool); 329 330 if (!zfs_name_valid(bootfs, ZFS_TYPE_FILESYSTEM|ZFS_TYPE_SNAPSHOT)) 331 return (B_FALSE); 332 333 if (strncmp(pool, bootfs, len) == 0 && 334 (bootfs[len] == '/' || bootfs[len] == '\0')) 335 return (B_TRUE); 336 337 return (B_FALSE); 338 } 339 340 /* 341 * Inspect the configuration to determine if any of the devices contain 342 * an EFI label. 343 */ 344 static boolean_t 345 pool_uses_efi(nvlist_t *config) 346 { 347 nvlist_t **child; 348 uint_t c, children; 349 350 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN, 351 &child, &children) != 0) 352 return (read_efi_label(config, NULL) >= 0); 353 354 for (c = 0; c < children; c++) { 355 if (pool_uses_efi(child[c])) 356 return (B_TRUE); 357 } 358 return (B_FALSE); 359 } 360 361 static boolean_t 362 pool_is_bootable(zpool_handle_t *zhp) 363 { 364 char bootfs[ZPOOL_MAXNAMELEN]; 365 366 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs, 367 sizeof (bootfs), NULL) == 0 && strncmp(bootfs, "-", 368 sizeof (bootfs)) != 0); 369 } 370 371 372 /* 373 * Given an nvlist of zpool properties to be set, validate that they are 374 * correct, and parse any numeric properties (index, boolean, etc) if they are 375 * specified as strings. 376 */ 377 static nvlist_t * 378 zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname, 379 nvlist_t *props, uint64_t version, boolean_t create_or_import, char *errbuf) 380 { 381 nvpair_t *elem; 382 nvlist_t *retprops; 383 zpool_prop_t prop; 384 char *strval; 385 uint64_t intval; 386 char *slash; 387 struct stat64 statbuf; 388 zpool_handle_t *zhp; 389 nvlist_t *nvroot; 390 391 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) { 392 (void) no_memory(hdl); 393 return (NULL); 394 } 395 396 elem = NULL; 397 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 398 const char *propname = nvpair_name(elem); 399 400 /* 401 * Make sure this property is valid and applies to this type. 402 */ 403 if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL) { 404 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 405 "invalid property '%s'"), propname); 406 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 407 goto error; 408 } 409 410 if (zpool_prop_readonly(prop)) { 411 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 412 "is readonly"), propname); 413 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 414 goto error; 415 } 416 417 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops, 418 &strval, &intval, errbuf) != 0) 419 goto error; 420 421 /* 422 * Perform additional checking for specific properties. 423 */ 424 switch (prop) { 425 case ZPOOL_PROP_VERSION: 426 if (intval < version || intval > SPA_VERSION) { 427 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 428 "property '%s' number %d is invalid."), 429 propname, intval); 430 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 431 goto error; 432 } 433 break; 434 435 case ZPOOL_PROP_BOOTFS: 436 if (create_or_import) { 437 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 438 "property '%s' cannot be set at creation " 439 "or import time"), propname); 440 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 441 goto error; 442 } 443 444 if (version < SPA_VERSION_BOOTFS) { 445 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 446 "pool must be upgraded to support " 447 "'%s' property"), propname); 448 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 449 goto error; 450 } 451 452 /* 453 * bootfs property value has to be a dataset name and 454 * the dataset has to be in the same pool as it sets to. 455 */ 456 if (strval[0] != '\0' && !bootfs_name_valid(poolname, 457 strval)) { 458 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 459 "is an invalid name"), strval); 460 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 461 goto error; 462 } 463 464 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) { 465 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 466 "could not open pool '%s'"), poolname); 467 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 468 goto error; 469 } 470 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 471 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 472 473 /* 474 * bootfs property cannot be set on a disk which has 475 * been EFI labeled. 476 */ 477 if (pool_uses_efi(nvroot)) { 478 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 479 "property '%s' not supported on " 480 "EFI labeled devices"), propname); 481 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf); 482 zpool_close(zhp); 483 goto error; 484 } 485 zpool_close(zhp); 486 break; 487 488 case ZPOOL_PROP_ALTROOT: 489 if (!create_or_import) { 490 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 491 "property '%s' can only be set during pool " 492 "creation or import"), propname); 493 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 494 goto error; 495 } 496 497 if (strval[0] != '/') { 498 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 499 "bad alternate root '%s'"), strval); 500 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 501 goto error; 502 } 503 break; 504 505 case ZPOOL_PROP_CACHEFILE: 506 if (strval[0] == '\0') 507 break; 508 509 if (strcmp(strval, "none") == 0) 510 break; 511 512 if (strval[0] != '/') { 513 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 514 "property '%s' must be empty, an " 515 "absolute path, or 'none'"), propname); 516 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 517 goto error; 518 } 519 520 slash = strrchr(strval, '/'); 521 522 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || 523 strcmp(slash, "/..") == 0) { 524 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 525 "'%s' is not a valid file"), strval); 526 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 527 goto error; 528 } 529 530 *slash = '\0'; 531 532 if (strval[0] != '\0' && 533 (stat64(strval, &statbuf) != 0 || 534 !S_ISDIR(statbuf.st_mode))) { 535 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 536 "'%s' is not a valid directory"), 537 strval); 538 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 539 goto error; 540 } 541 542 *slash = '/'; 543 break; 544 } 545 } 546 547 return (retprops); 548 error: 549 nvlist_free(retprops); 550 return (NULL); 551 } 552 553 /* 554 * Set zpool property : propname=propval. 555 */ 556 int 557 zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval) 558 { 559 zfs_cmd_t zc = { 0 }; 560 int ret = -1; 561 char errbuf[1024]; 562 nvlist_t *nvl = NULL; 563 nvlist_t *realprops; 564 uint64_t version; 565 566 (void) snprintf(errbuf, sizeof (errbuf), 567 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 568 zhp->zpool_name); 569 570 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 571 return (no_memory(zhp->zpool_hdl)); 572 573 if (nvlist_add_string(nvl, propname, propval) != 0) { 574 nvlist_free(nvl); 575 return (no_memory(zhp->zpool_hdl)); 576 } 577 578 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 579 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl, 580 zhp->zpool_name, nvl, version, B_FALSE, errbuf)) == NULL) { 581 nvlist_free(nvl); 582 return (-1); 583 } 584 585 nvlist_free(nvl); 586 nvl = realprops; 587 588 /* 589 * Execute the corresponding ioctl() to set this property. 590 */ 591 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 592 593 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) { 594 nvlist_free(nvl); 595 return (-1); 596 } 597 598 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc); 599 600 zcmd_free_nvlists(&zc); 601 nvlist_free(nvl); 602 603 if (ret) 604 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf); 605 else 606 (void) zpool_props_refresh(zhp); 607 608 return (ret); 609 } 610 611 int 612 zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp) 613 { 614 libzfs_handle_t *hdl = zhp->zpool_hdl; 615 zprop_list_t *entry; 616 char buf[ZFS_MAXPROPLEN]; 617 618 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0) 619 return (-1); 620 621 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 622 623 if (entry->pl_fixed) 624 continue; 625 626 if (entry->pl_prop != ZPROP_INVAL && 627 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf), 628 NULL) == 0) { 629 if (strlen(buf) > entry->pl_width) 630 entry->pl_width = strlen(buf); 631 } 632 } 633 634 return (0); 635 } 636 637 638 /* 639 * Don't start the slice at the default block of 34; many storage 640 * devices will use a stripe width of 128k, so start there instead. 641 */ 642 #define NEW_START_BLOCK 256 643 644 /* 645 * Validate the given pool name, optionally putting an extended error message in 646 * 'buf'. 647 */ 648 boolean_t 649 zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool) 650 { 651 namecheck_err_t why; 652 char what; 653 int ret; 654 655 ret = pool_namecheck(pool, &why, &what); 656 657 /* 658 * The rules for reserved pool names were extended at a later point. 659 * But we need to support users with existing pools that may now be 660 * invalid. So we only check for this expanded set of names during a 661 * create (or import), and only in userland. 662 */ 663 if (ret == 0 && !isopen && 664 (strncmp(pool, "mirror", 6) == 0 || 665 strncmp(pool, "raidz", 5) == 0 || 666 strncmp(pool, "spare", 5) == 0 || 667 strcmp(pool, "log") == 0)) { 668 if (hdl != NULL) 669 zfs_error_aux(hdl, 670 dgettext(TEXT_DOMAIN, "name is reserved")); 671 return (B_FALSE); 672 } 673 674 675 if (ret != 0) { 676 if (hdl != NULL) { 677 switch (why) { 678 case NAME_ERR_TOOLONG: 679 zfs_error_aux(hdl, 680 dgettext(TEXT_DOMAIN, "name is too long")); 681 break; 682 683 case NAME_ERR_INVALCHAR: 684 zfs_error_aux(hdl, 685 dgettext(TEXT_DOMAIN, "invalid character " 686 "'%c' in pool name"), what); 687 break; 688 689 case NAME_ERR_NOLETTER: 690 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 691 "name must begin with a letter")); 692 break; 693 694 case NAME_ERR_RESERVED: 695 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 696 "name is reserved")); 697 break; 698 699 case NAME_ERR_DISKLIKE: 700 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 701 "pool name is reserved")); 702 break; 703 704 case NAME_ERR_LEADING_SLASH: 705 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 706 "leading slash in name")); 707 break; 708 709 case NAME_ERR_EMPTY_COMPONENT: 710 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 711 "empty component in name")); 712 break; 713 714 case NAME_ERR_TRAILING_SLASH: 715 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 716 "trailing slash in name")); 717 break; 718 719 case NAME_ERR_MULTIPLE_AT: 720 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 721 "multiple '@' delimiters in name")); 722 break; 723 724 } 725 } 726 return (B_FALSE); 727 } 728 729 return (B_TRUE); 730 } 731 732 /* 733 * Open a handle to the given pool, even if the pool is currently in the FAULTED 734 * state. 735 */ 736 zpool_handle_t * 737 zpool_open_canfail(libzfs_handle_t *hdl, const char *pool) 738 { 739 zpool_handle_t *zhp; 740 boolean_t missing; 741 742 /* 743 * Make sure the pool name is valid. 744 */ 745 if (!zpool_name_valid(hdl, B_TRUE, pool)) { 746 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME, 747 dgettext(TEXT_DOMAIN, "cannot open '%s'"), 748 pool); 749 return (NULL); 750 } 751 752 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 753 return (NULL); 754 755 zhp->zpool_hdl = hdl; 756 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 757 758 if (zpool_refresh_stats(zhp, &missing) != 0) { 759 zpool_close(zhp); 760 return (NULL); 761 } 762 763 if (missing) { 764 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool")); 765 (void) zfs_error_fmt(hdl, EZFS_NOENT, 766 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool); 767 zpool_close(zhp); 768 return (NULL); 769 } 770 771 return (zhp); 772 } 773 774 /* 775 * Like the above, but silent on error. Used when iterating over pools (because 776 * the configuration cache may be out of date). 777 */ 778 int 779 zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret) 780 { 781 zpool_handle_t *zhp; 782 boolean_t missing; 783 784 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 785 return (-1); 786 787 zhp->zpool_hdl = hdl; 788 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 789 790 if (zpool_refresh_stats(zhp, &missing) != 0) { 791 zpool_close(zhp); 792 return (-1); 793 } 794 795 if (missing) { 796 zpool_close(zhp); 797 *ret = NULL; 798 return (0); 799 } 800 801 *ret = zhp; 802 return (0); 803 } 804 805 /* 806 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted 807 * state. 808 */ 809 zpool_handle_t * 810 zpool_open(libzfs_handle_t *hdl, const char *pool) 811 { 812 zpool_handle_t *zhp; 813 814 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL) 815 return (NULL); 816 817 if (zhp->zpool_state == POOL_STATE_UNAVAIL) { 818 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL, 819 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name); 820 zpool_close(zhp); 821 return (NULL); 822 } 823 824 return (zhp); 825 } 826 827 /* 828 * Close the handle. Simply frees the memory associated with the handle. 829 */ 830 void 831 zpool_close(zpool_handle_t *zhp) 832 { 833 if (zhp->zpool_config) 834 nvlist_free(zhp->zpool_config); 835 if (zhp->zpool_old_config) 836 nvlist_free(zhp->zpool_old_config); 837 if (zhp->zpool_props) 838 nvlist_free(zhp->zpool_props); 839 free(zhp); 840 } 841 842 /* 843 * Return the name of the pool. 844 */ 845 const char * 846 zpool_get_name(zpool_handle_t *zhp) 847 { 848 return (zhp->zpool_name); 849 } 850 851 852 /* 853 * Return the state of the pool (ACTIVE or UNAVAILABLE) 854 */ 855 int 856 zpool_get_state(zpool_handle_t *zhp) 857 { 858 return (zhp->zpool_state); 859 } 860 861 /* 862 * Create the named pool, using the provided vdev list. It is assumed 863 * that the consumer has already validated the contents of the nvlist, so we 864 * don't have to worry about error semantics. 865 */ 866 int 867 zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot, 868 nvlist_t *props, nvlist_t *fsprops) 869 { 870 zfs_cmd_t zc = { 0 }; 871 nvlist_t *zc_fsprops = NULL; 872 nvlist_t *zc_props = NULL; 873 char msg[1024]; 874 char *altroot; 875 int ret = -1; 876 877 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 878 "cannot create '%s'"), pool); 879 880 if (!zpool_name_valid(hdl, B_FALSE, pool)) 881 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 882 883 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 884 return (-1); 885 886 if (props) { 887 if ((zc_props = zpool_valid_proplist(hdl, pool, props, 888 SPA_VERSION_1, B_TRUE, msg)) == NULL) { 889 goto create_failed; 890 } 891 } 892 893 if (fsprops) { 894 uint64_t zoned; 895 char *zonestr; 896 897 zoned = ((nvlist_lookup_string(fsprops, 898 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) && 899 strcmp(zonestr, "on") == 0); 900 901 if ((zc_fsprops = zfs_valid_proplist(hdl, 902 ZFS_TYPE_FILESYSTEM, fsprops, zoned, NULL, msg)) == NULL) { 903 goto create_failed; 904 } 905 if (!zc_props && 906 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) { 907 goto create_failed; 908 } 909 if (nvlist_add_nvlist(zc_props, 910 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) { 911 goto create_failed; 912 } 913 } 914 915 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 916 goto create_failed; 917 918 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name)); 919 920 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) { 921 922 zcmd_free_nvlists(&zc); 923 nvlist_free(zc_props); 924 nvlist_free(zc_fsprops); 925 926 switch (errno) { 927 case EBUSY: 928 /* 929 * This can happen if the user has specified the same 930 * device multiple times. We can't reliably detect this 931 * until we try to add it and see we already have a 932 * label. 933 */ 934 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 935 "one or more vdevs refer to the same device")); 936 return (zfs_error(hdl, EZFS_BADDEV, msg)); 937 938 case EOVERFLOW: 939 /* 940 * This occurs when one of the devices is below 941 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 942 * device was the problem device since there's no 943 * reliable way to determine device size from userland. 944 */ 945 { 946 char buf[64]; 947 948 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 949 950 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 951 "one or more devices is less than the " 952 "minimum size (%s)"), buf); 953 } 954 return (zfs_error(hdl, EZFS_BADDEV, msg)); 955 956 case ENOSPC: 957 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 958 "one or more devices is out of space")); 959 return (zfs_error(hdl, EZFS_BADDEV, msg)); 960 961 case ENOTBLK: 962 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 963 "cache device must be a disk or disk slice")); 964 return (zfs_error(hdl, EZFS_BADDEV, msg)); 965 966 default: 967 return (zpool_standard_error(hdl, errno, msg)); 968 } 969 } 970 971 /* 972 * If this is an alternate root pool, then we automatically set the 973 * mountpoint of the root dataset to be '/'. 974 */ 975 if (nvlist_lookup_string(props, zpool_prop_to_name(ZPOOL_PROP_ALTROOT), 976 &altroot) == 0) { 977 zfs_handle_t *zhp; 978 979 verify((zhp = zfs_open(hdl, pool, ZFS_TYPE_DATASET)) != NULL); 980 verify(zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT), 981 "/") == 0); 982 983 zfs_close(zhp); 984 } 985 986 create_failed: 987 zcmd_free_nvlists(&zc); 988 nvlist_free(zc_props); 989 nvlist_free(zc_fsprops); 990 return (ret); 991 } 992 993 /* 994 * Destroy the given pool. It is up to the caller to ensure that there are no 995 * datasets left in the pool. 996 */ 997 int 998 zpool_destroy(zpool_handle_t *zhp) 999 { 1000 zfs_cmd_t zc = { 0 }; 1001 zfs_handle_t *zfp = NULL; 1002 libzfs_handle_t *hdl = zhp->zpool_hdl; 1003 char msg[1024]; 1004 1005 if (zhp->zpool_state == POOL_STATE_ACTIVE && 1006 (zfp = zfs_open(zhp->zpool_hdl, zhp->zpool_name, 1007 ZFS_TYPE_FILESYSTEM)) == NULL) 1008 return (-1); 1009 1010 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1011 1012 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) { 1013 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1014 "cannot destroy '%s'"), zhp->zpool_name); 1015 1016 if (errno == EROFS) { 1017 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1018 "one or more devices is read only")); 1019 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1020 } else { 1021 (void) zpool_standard_error(hdl, errno, msg); 1022 } 1023 1024 if (zfp) 1025 zfs_close(zfp); 1026 return (-1); 1027 } 1028 1029 if (zfp) { 1030 remove_mountpoint(zfp); 1031 zfs_close(zfp); 1032 } 1033 1034 return (0); 1035 } 1036 1037 /* 1038 * Add the given vdevs to the pool. The caller must have already performed the 1039 * necessary verification to ensure that the vdev specification is well-formed. 1040 */ 1041 int 1042 zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot) 1043 { 1044 zfs_cmd_t zc = { 0 }; 1045 int ret; 1046 libzfs_handle_t *hdl = zhp->zpool_hdl; 1047 char msg[1024]; 1048 nvlist_t **spares, **l2cache; 1049 uint_t nspares, nl2cache; 1050 1051 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1052 "cannot add to '%s'"), zhp->zpool_name); 1053 1054 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1055 SPA_VERSION_SPARES && 1056 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 1057 &spares, &nspares) == 0) { 1058 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1059 "upgraded to add hot spares")); 1060 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1061 } 1062 1063 if (pool_is_bootable(zhp) && nvlist_lookup_nvlist_array(nvroot, 1064 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0) { 1065 uint64_t s; 1066 1067 for (s = 0; s < nspares; s++) { 1068 char *path; 1069 1070 if (nvlist_lookup_string(spares[s], ZPOOL_CONFIG_PATH, 1071 &path) == 0 && pool_uses_efi(spares[s])) { 1072 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1073 "device '%s' contains an EFI label and " 1074 "cannot be used on root pools."), 1075 zpool_vdev_name(hdl, NULL, spares[s], 1076 B_FALSE)); 1077 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg)); 1078 } 1079 } 1080 } 1081 1082 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1083 SPA_VERSION_L2CACHE && 1084 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, 1085 &l2cache, &nl2cache) == 0) { 1086 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1087 "upgraded to add cache devices")); 1088 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1089 } 1090 1091 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1092 return (-1); 1093 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1094 1095 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) { 1096 switch (errno) { 1097 case EBUSY: 1098 /* 1099 * This can happen if the user has specified the same 1100 * device multiple times. We can't reliably detect this 1101 * until we try to add it and see we already have a 1102 * label. 1103 */ 1104 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1105 "one or more vdevs refer to the same device")); 1106 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1107 break; 1108 1109 case EOVERFLOW: 1110 /* 1111 * This occurrs when one of the devices is below 1112 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1113 * device was the problem device since there's no 1114 * reliable way to determine device size from userland. 1115 */ 1116 { 1117 char buf[64]; 1118 1119 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1120 1121 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1122 "device is less than the minimum " 1123 "size (%s)"), buf); 1124 } 1125 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1126 break; 1127 1128 case ENOTSUP: 1129 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1130 "pool must be upgraded to add these vdevs")); 1131 (void) zfs_error(hdl, EZFS_BADVERSION, msg); 1132 break; 1133 1134 case EDOM: 1135 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1136 "root pool can not have multiple vdevs" 1137 " or separate logs")); 1138 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, msg); 1139 break; 1140 1141 case ENOTBLK: 1142 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1143 "cache device must be a disk or disk slice")); 1144 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1145 break; 1146 1147 default: 1148 (void) zpool_standard_error(hdl, errno, msg); 1149 } 1150 1151 ret = -1; 1152 } else { 1153 ret = 0; 1154 } 1155 1156 zcmd_free_nvlists(&zc); 1157 1158 return (ret); 1159 } 1160 1161 /* 1162 * Exports the pool from the system. The caller must ensure that there are no 1163 * mounted datasets in the pool. 1164 */ 1165 int 1166 zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce) 1167 { 1168 zfs_cmd_t zc = { 0 }; 1169 char msg[1024]; 1170 1171 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1172 "cannot export '%s'"), zhp->zpool_name); 1173 1174 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1175 zc.zc_cookie = force; 1176 zc.zc_guid = hardforce; 1177 1178 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) { 1179 switch (errno) { 1180 case EXDEV: 1181 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN, 1182 "use '-f' to override the following errors:\n" 1183 "'%s' has an active shared spare which could be" 1184 " used by other pools once '%s' is exported."), 1185 zhp->zpool_name, zhp->zpool_name); 1186 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE, 1187 msg)); 1188 default: 1189 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno, 1190 msg)); 1191 } 1192 } 1193 1194 return (0); 1195 } 1196 1197 int 1198 zpool_export(zpool_handle_t *zhp, boolean_t force) 1199 { 1200 return (zpool_export_common(zhp, force, B_FALSE)); 1201 } 1202 1203 int 1204 zpool_export_force(zpool_handle_t *zhp) 1205 { 1206 return (zpool_export_common(zhp, B_TRUE, B_TRUE)); 1207 } 1208 1209 static void 1210 zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun, 1211 nvlist_t *rbi) 1212 { 1213 uint64_t rewindto; 1214 int64_t loss = -1; 1215 struct tm t; 1216 char timestr[128]; 1217 1218 if (!hdl->libzfs_printerr || rbi == NULL) 1219 return; 1220 1221 if (nvlist_lookup_uint64(rbi, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1222 return; 1223 (void) nvlist_lookup_int64(rbi, ZPOOL_CONFIG_REWIND_TIME, &loss); 1224 1225 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1226 strftime(timestr, 128, 0, &t) != 0) { 1227 if (dryrun) { 1228 (void) printf(dgettext(TEXT_DOMAIN, 1229 "Would be able to return %s " 1230 "to its state as of %s.\n"), 1231 name, timestr); 1232 } else { 1233 (void) printf(dgettext(TEXT_DOMAIN, 1234 "Pool %s returned to its state as of %s.\n"), 1235 name, timestr); 1236 } 1237 if (loss > 120) { 1238 (void) printf(dgettext(TEXT_DOMAIN, 1239 "%s approximately %lld "), 1240 dryrun ? "Would discard" : "Discarded", 1241 (loss + 30) / 60); 1242 (void) printf(dgettext(TEXT_DOMAIN, 1243 "minutes of transactions.\n")); 1244 } else if (loss > 0) { 1245 (void) printf(dgettext(TEXT_DOMAIN, 1246 "%s approximately %lld "), 1247 dryrun ? "Would discard" : "Discarded", loss); 1248 (void) printf(dgettext(TEXT_DOMAIN, 1249 "seconds of transactions.\n")); 1250 } 1251 } 1252 } 1253 1254 void 1255 zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason, 1256 nvlist_t *config) 1257 { 1258 int64_t loss = -1; 1259 uint64_t edata = UINT64_MAX; 1260 uint64_t rewindto; 1261 struct tm t; 1262 char timestr[128]; 1263 1264 if (!hdl->libzfs_printerr) 1265 return; 1266 1267 if (reason >= 0) 1268 (void) printf(dgettext(TEXT_DOMAIN, "action: ")); 1269 else 1270 (void) printf(dgettext(TEXT_DOMAIN, "\t")); 1271 1272 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */ 1273 if (nvlist_lookup_uint64(config, 1274 ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1275 goto no_info; 1276 1277 (void) nvlist_lookup_int64(config, ZPOOL_CONFIG_REWIND_TIME, &loss); 1278 (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_LOAD_DATA_ERRORS, 1279 &edata); 1280 1281 (void) printf(dgettext(TEXT_DOMAIN, 1282 "Recovery is possible, but will result in some data loss.\n")); 1283 1284 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1285 strftime(timestr, 128, 0, &t) != 0) { 1286 (void) printf(dgettext(TEXT_DOMAIN, 1287 "\tReturning the pool to its state as of %s\n" 1288 "\tshould correct the problem. "), 1289 timestr); 1290 } else { 1291 (void) printf(dgettext(TEXT_DOMAIN, 1292 "\tReverting the pool to an earlier state " 1293 "should correct the problem.\n\t")); 1294 } 1295 1296 if (loss > 120) { 1297 (void) printf(dgettext(TEXT_DOMAIN, 1298 "Approximately %lld minutes of data\n" 1299 "\tmust be discarded, irreversibly. "), (loss + 30) / 60); 1300 } else if (loss > 0) { 1301 (void) printf(dgettext(TEXT_DOMAIN, 1302 "Approximately %lld seconds of data\n" 1303 "\tmust be discarded, irreversibly. "), loss); 1304 } 1305 if (edata != 0 && edata != UINT64_MAX) { 1306 if (edata == 1) { 1307 (void) printf(dgettext(TEXT_DOMAIN, 1308 "After rewind, at least\n" 1309 "\tone persistent user-data error will remain. ")); 1310 } else { 1311 (void) printf(dgettext(TEXT_DOMAIN, 1312 "After rewind, several\n" 1313 "\tpersistent user-data errors will remain. ")); 1314 } 1315 } 1316 (void) printf(dgettext(TEXT_DOMAIN, 1317 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "), 1318 reason >= 0 ? "clear" : "import", name); 1319 1320 (void) printf(dgettext(TEXT_DOMAIN, 1321 "A scrub of the pool\n" 1322 "\tis strongly recommended after recovery.\n")); 1323 return; 1324 1325 no_info: 1326 (void) printf(dgettext(TEXT_DOMAIN, 1327 "Destroy and re-create the pool from\n\ta backup source.\n")); 1328 } 1329 1330 /* 1331 * zpool_import() is a contracted interface. Should be kept the same 1332 * if possible. 1333 * 1334 * Applications should use zpool_import_props() to import a pool with 1335 * new properties value to be set. 1336 */ 1337 int 1338 zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1339 char *altroot) 1340 { 1341 nvlist_t *props = NULL; 1342 int ret; 1343 1344 if (altroot != NULL) { 1345 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 1346 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1347 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1348 newname)); 1349 } 1350 1351 if (nvlist_add_string(props, 1352 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 || 1353 nvlist_add_string(props, 1354 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) { 1355 nvlist_free(props); 1356 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1357 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1358 newname)); 1359 } 1360 } 1361 1362 ret = zpool_import_props(hdl, config, newname, props, B_FALSE); 1363 if (props) 1364 nvlist_free(props); 1365 return (ret); 1366 } 1367 1368 /* 1369 * Import the given pool using the known configuration and a list of 1370 * properties to be set. The configuration should have come from 1371 * zpool_find_import(). The 'newname' parameters control whether the pool 1372 * is imported with a different name. 1373 */ 1374 int 1375 zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1376 nvlist_t *props, boolean_t importfaulted) 1377 { 1378 zfs_cmd_t zc = { 0 }; 1379 zpool_rewind_policy_t policy; 1380 nvlist_t *nvi = NULL; 1381 char *thename; 1382 char *origname; 1383 uint64_t returned_size; 1384 int ret; 1385 char errbuf[1024]; 1386 1387 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 1388 &origname) == 0); 1389 1390 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1391 "cannot import pool '%s'"), origname); 1392 1393 if (newname != NULL) { 1394 if (!zpool_name_valid(hdl, B_FALSE, newname)) 1395 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME, 1396 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1397 newname)); 1398 thename = (char *)newname; 1399 } else { 1400 thename = origname; 1401 } 1402 1403 if (props) { 1404 uint64_t version; 1405 1406 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, 1407 &version) == 0); 1408 1409 if ((props = zpool_valid_proplist(hdl, origname, 1410 props, version, B_TRUE, errbuf)) == NULL) { 1411 return (-1); 1412 } else if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { 1413 nvlist_free(props); 1414 return (-1); 1415 } 1416 } 1417 1418 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name)); 1419 1420 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, 1421 &zc.zc_guid) == 0); 1422 1423 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) { 1424 nvlist_free(props); 1425 return (-1); 1426 } 1427 returned_size = zc.zc_nvlist_conf_size + 512; 1428 if (zcmd_alloc_dst_nvlist(hdl, &zc, returned_size) != 0) { 1429 nvlist_free(props); 1430 return (-1); 1431 } 1432 1433 zc.zc_cookie = (uint64_t)importfaulted; 1434 ret = 0; 1435 if (zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc) != 0) { 1436 char desc[1024]; 1437 1438 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 1439 zpool_get_rewind_policy(config, &policy); 1440 /* 1441 * Dry-run failed, but we print out what success 1442 * looks like if we found a best txg 1443 */ 1444 if ((policy.zrp_request & ZPOOL_TRY_REWIND) && nvi) { 1445 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1446 B_TRUE, nvi); 1447 nvlist_free(nvi); 1448 return (-1); 1449 } 1450 1451 if (newname == NULL) 1452 (void) snprintf(desc, sizeof (desc), 1453 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1454 thename); 1455 else 1456 (void) snprintf(desc, sizeof (desc), 1457 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"), 1458 origname, thename); 1459 1460 switch (errno) { 1461 case ENOTSUP: 1462 /* 1463 * Unsupported version. 1464 */ 1465 (void) zfs_error(hdl, EZFS_BADVERSION, desc); 1466 break; 1467 1468 case EINVAL: 1469 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc); 1470 break; 1471 1472 case EROFS: 1473 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1474 "one or more devices is read only")); 1475 (void) zfs_error(hdl, EZFS_BADDEV, desc); 1476 break; 1477 1478 default: 1479 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 1480 (void) zpool_standard_error(hdl, errno, desc); 1481 zpool_explain_recover(hdl, 1482 newname ? origname : thename, -errno, nvi); 1483 nvlist_free(nvi); 1484 break; 1485 } 1486 1487 ret = -1; 1488 } else { 1489 zpool_handle_t *zhp; 1490 1491 /* 1492 * This should never fail, but play it safe anyway. 1493 */ 1494 if (zpool_open_silent(hdl, thename, &zhp) != 0) 1495 ret = -1; 1496 else if (zhp != NULL) 1497 zpool_close(zhp); 1498 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 1499 zpool_get_rewind_policy(config, &policy); 1500 if (policy.zrp_request & 1501 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 1502 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1503 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), 1504 nvi); 1505 } 1506 nvlist_free(nvi); 1507 return (0); 1508 } 1509 1510 zcmd_free_nvlists(&zc); 1511 nvlist_free(props); 1512 1513 return (ret); 1514 } 1515 1516 /* 1517 * Scan the pool. 1518 */ 1519 int 1520 zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func) 1521 { 1522 zfs_cmd_t zc = { 0 }; 1523 char msg[1024]; 1524 libzfs_handle_t *hdl = zhp->zpool_hdl; 1525 1526 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1527 zc.zc_cookie = func; 1528 1529 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 || 1530 (errno == ENOENT && func != POOL_SCAN_NONE)) 1531 return (0); 1532 1533 if (func == POOL_SCAN_SCRUB) { 1534 (void) snprintf(msg, sizeof (msg), 1535 dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name); 1536 } else if (func == POOL_SCAN_NONE) { 1537 (void) snprintf(msg, sizeof (msg), 1538 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"), 1539 zc.zc_name); 1540 } else { 1541 assert(!"unexpected result"); 1542 } 1543 1544 if (errno == EBUSY) { 1545 nvlist_t *nvroot; 1546 pool_scan_stat_t *ps = NULL; 1547 uint_t psc; 1548 1549 verify(nvlist_lookup_nvlist(zhp->zpool_config, 1550 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 1551 (void) nvlist_lookup_uint64_array(nvroot, 1552 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc); 1553 if (ps && ps->pss_func == POOL_SCAN_SCRUB) 1554 return (zfs_error(hdl, EZFS_SCRUBBING, msg)); 1555 else 1556 return (zfs_error(hdl, EZFS_RESILVERING, msg)); 1557 } else if (errno == ENOENT) { 1558 return (zfs_error(hdl, EZFS_NO_SCRUB, msg)); 1559 } else { 1560 return (zpool_standard_error(hdl, errno, msg)); 1561 } 1562 } 1563 1564 /* 1565 * This provides a very minimal check whether a given string is likely a 1566 * c#t#d# style string. Users of this are expected to do their own 1567 * verification of the s# part. 1568 */ 1569 #define CTD_CHECK(str) (str && str[0] == 'c' && isdigit(str[1])) 1570 1571 /* 1572 * More elaborate version for ones which may start with "/dev/dsk/" 1573 * and the like. 1574 */ 1575 static int 1576 ctd_check_path(char *str) { 1577 /* 1578 * If it starts with a slash, check the last component. 1579 */ 1580 if (str && str[0] == '/') { 1581 char *tmp = strrchr(str, '/'); 1582 1583 /* 1584 * If it ends in "/old", check the second-to-last 1585 * component of the string instead. 1586 */ 1587 if (tmp != str && strcmp(tmp, "/old") == 0) { 1588 for (tmp--; *tmp != '/'; tmp--) 1589 ; 1590 } 1591 str = tmp + 1; 1592 } 1593 return (CTD_CHECK(str)); 1594 } 1595 1596 /* 1597 * Find a vdev that matches the search criteria specified. We use the 1598 * the nvpair name to determine how we should look for the device. 1599 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL 1600 * spare; but FALSE if its an INUSE spare. 1601 */ 1602 static nvlist_t * 1603 vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare, 1604 boolean_t *l2cache, boolean_t *log) 1605 { 1606 uint_t c, children; 1607 nvlist_t **child; 1608 nvlist_t *ret; 1609 uint64_t is_log; 1610 char *srchkey; 1611 nvpair_t *pair = nvlist_next_nvpair(search, NULL); 1612 1613 /* Nothing to look for */ 1614 if (search == NULL || pair == NULL) 1615 return (NULL); 1616 1617 /* Obtain the key we will use to search */ 1618 srchkey = nvpair_name(pair); 1619 1620 switch (nvpair_type(pair)) { 1621 case DATA_TYPE_UINT64: { 1622 uint64_t srchval, theguid, present; 1623 1624 verify(nvpair_value_uint64(pair, &srchval) == 0); 1625 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) { 1626 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, 1627 &present) == 0) { 1628 /* 1629 * If the device has never been present since 1630 * import, the only reliable way to match the 1631 * vdev is by GUID. 1632 */ 1633 verify(nvlist_lookup_uint64(nv, 1634 ZPOOL_CONFIG_GUID, &theguid) == 0); 1635 if (theguid == srchval) 1636 return (nv); 1637 } 1638 } 1639 break; 1640 } 1641 1642 case DATA_TYPE_STRING: { 1643 char *srchval, *val; 1644 1645 verify(nvpair_value_string(pair, &srchval) == 0); 1646 if (nvlist_lookup_string(nv, srchkey, &val) != 0) 1647 break; 1648 1649 /* 1650 * Search for the requested value. Special cases: 1651 * 1652 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in 1653 * "s0" or "s0/old". The "s0" part is hidden from the user, 1654 * but included in the string, so this matches around it. 1655 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE). 1656 * 1657 * Otherwise, all other searches are simple string compares. 1658 */ 1659 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 && 1660 ctd_check_path(val)) { 1661 uint64_t wholedisk = 0; 1662 1663 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 1664 &wholedisk); 1665 if (wholedisk) { 1666 int slen = strlen(srchval); 1667 int vlen = strlen(val); 1668 1669 if (slen != vlen - 2) 1670 break; 1671 1672 /* 1673 * make_leaf_vdev() should only set 1674 * wholedisk for ZPOOL_CONFIG_PATHs which 1675 * will include "/dev/dsk/", giving plenty of 1676 * room for the indices used next. 1677 */ 1678 ASSERT(vlen >= 6); 1679 1680 /* 1681 * strings identical except trailing "s0" 1682 */ 1683 if (strcmp(&val[vlen - 2], "s0") == 0 && 1684 strncmp(srchval, val, slen) == 0) 1685 return (nv); 1686 1687 /* 1688 * strings identical except trailing "s0/old" 1689 */ 1690 if (strcmp(&val[vlen - 6], "s0/old") == 0 && 1691 strcmp(&srchval[slen - 4], "/old") == 0 && 1692 strncmp(srchval, val, slen - 4) == 0) 1693 return (nv); 1694 1695 break; 1696 } 1697 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 1698 char *type, *idx, *end, *p; 1699 uint64_t id, vdev_id; 1700 1701 /* 1702 * Determine our vdev type, keeping in mind 1703 * that the srchval is composed of a type and 1704 * vdev id pair (i.e. mirror-4). 1705 */ 1706 if ((type = strdup(srchval)) == NULL) 1707 return (NULL); 1708 1709 if ((p = strrchr(type, '-')) == NULL) { 1710 free(type); 1711 break; 1712 } 1713 idx = p + 1; 1714 *p = '\0'; 1715 1716 /* 1717 * If the types don't match then keep looking. 1718 */ 1719 if (strncmp(val, type, strlen(val)) != 0) { 1720 free(type); 1721 break; 1722 } 1723 1724 verify(strncmp(type, VDEV_TYPE_RAIDZ, 1725 strlen(VDEV_TYPE_RAIDZ)) == 0 || 1726 strncmp(type, VDEV_TYPE_MIRROR, 1727 strlen(VDEV_TYPE_MIRROR)) == 0); 1728 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 1729 &id) == 0); 1730 1731 errno = 0; 1732 vdev_id = strtoull(idx, &end, 10); 1733 1734 free(type); 1735 if (errno != 0) 1736 return (NULL); 1737 1738 /* 1739 * Now verify that we have the correct vdev id. 1740 */ 1741 if (vdev_id == id) 1742 return (nv); 1743 } 1744 1745 /* 1746 * Common case 1747 */ 1748 if (strcmp(srchval, val) == 0) 1749 return (nv); 1750 break; 1751 } 1752 1753 default: 1754 break; 1755 } 1756 1757 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 1758 &child, &children) != 0) 1759 return (NULL); 1760 1761 for (c = 0; c < children; c++) { 1762 if ((ret = vdev_to_nvlist_iter(child[c], search, 1763 avail_spare, l2cache, NULL)) != NULL) { 1764 /* 1765 * The 'is_log' value is only set for the toplevel 1766 * vdev, not the leaf vdevs. So we always lookup the 1767 * log device from the root of the vdev tree (where 1768 * 'log' is non-NULL). 1769 */ 1770 if (log != NULL && 1771 nvlist_lookup_uint64(child[c], 1772 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 && 1773 is_log) { 1774 *log = B_TRUE; 1775 } 1776 return (ret); 1777 } 1778 } 1779 1780 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, 1781 &child, &children) == 0) { 1782 for (c = 0; c < children; c++) { 1783 if ((ret = vdev_to_nvlist_iter(child[c], search, 1784 avail_spare, l2cache, NULL)) != NULL) { 1785 *avail_spare = B_TRUE; 1786 return (ret); 1787 } 1788 } 1789 } 1790 1791 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, 1792 &child, &children) == 0) { 1793 for (c = 0; c < children; c++) { 1794 if ((ret = vdev_to_nvlist_iter(child[c], search, 1795 avail_spare, l2cache, NULL)) != NULL) { 1796 *l2cache = B_TRUE; 1797 return (ret); 1798 } 1799 } 1800 } 1801 1802 return (NULL); 1803 } 1804 1805 /* 1806 * Given a physical path (minus the "/devices" prefix), find the 1807 * associated vdev. 1808 */ 1809 nvlist_t * 1810 zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath, 1811 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log) 1812 { 1813 nvlist_t *search, *nvroot, *ret; 1814 1815 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1816 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0); 1817 1818 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 1819 &nvroot) == 0); 1820 1821 *avail_spare = B_FALSE; 1822 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 1823 nvlist_free(search); 1824 1825 return (ret); 1826 } 1827 1828 /* 1829 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz). 1830 */ 1831 boolean_t 1832 zpool_vdev_is_interior(const char *name) 1833 { 1834 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 || 1835 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0) 1836 return (B_TRUE); 1837 return (B_FALSE); 1838 } 1839 1840 nvlist_t * 1841 zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare, 1842 boolean_t *l2cache, boolean_t *log) 1843 { 1844 char buf[MAXPATHLEN]; 1845 char *end; 1846 nvlist_t *nvroot, *search, *ret; 1847 uint64_t guid; 1848 1849 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 1850 1851 guid = strtoull(path, &end, 10); 1852 if (guid != 0 && *end == '\0') { 1853 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0); 1854 } else if (zpool_vdev_is_interior(path)) { 1855 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0); 1856 } else if (path[0] != '/') { 1857 (void) snprintf(buf, sizeof (buf), "%s%s", "/dev/dsk/", path); 1858 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0); 1859 } else { 1860 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0); 1861 } 1862 1863 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 1864 &nvroot) == 0); 1865 1866 *avail_spare = B_FALSE; 1867 *l2cache = B_FALSE; 1868 if (log != NULL) 1869 *log = B_FALSE; 1870 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 1871 nvlist_free(search); 1872 1873 return (ret); 1874 } 1875 1876 static int 1877 vdev_online(nvlist_t *nv) 1878 { 1879 uint64_t ival; 1880 1881 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 || 1882 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 || 1883 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0) 1884 return (0); 1885 1886 return (1); 1887 } 1888 1889 /* 1890 * Helper function for zpool_get_physpaths(). 1891 */ 1892 static int 1893 vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size, 1894 size_t *bytes_written) 1895 { 1896 size_t bytes_left, pos, rsz; 1897 char *tmppath; 1898 const char *format; 1899 1900 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH, 1901 &tmppath) != 0) 1902 return (EZFS_NODEVICE); 1903 1904 pos = *bytes_written; 1905 bytes_left = physpath_size - pos; 1906 format = (pos == 0) ? "%s" : " %s"; 1907 1908 rsz = snprintf(physpath + pos, bytes_left, format, tmppath); 1909 *bytes_written += rsz; 1910 1911 if (rsz >= bytes_left) { 1912 /* if physpath was not copied properly, clear it */ 1913 if (bytes_left != 0) { 1914 physpath[pos] = 0; 1915 } 1916 return (EZFS_NOSPC); 1917 } 1918 return (0); 1919 } 1920 1921 static int 1922 vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size, 1923 size_t *rsz, boolean_t is_spare) 1924 { 1925 char *type; 1926 int ret; 1927 1928 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) 1929 return (EZFS_INVALCONFIG); 1930 1931 if (strcmp(type, VDEV_TYPE_DISK) == 0) { 1932 /* 1933 * An active spare device has ZPOOL_CONFIG_IS_SPARE set. 1934 * For a spare vdev, we only want to boot from the active 1935 * spare device. 1936 */ 1937 if (is_spare) { 1938 uint64_t spare = 0; 1939 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 1940 &spare); 1941 if (!spare) 1942 return (EZFS_INVALCONFIG); 1943 } 1944 1945 if (vdev_online(nv)) { 1946 if ((ret = vdev_get_one_physpath(nv, physpath, 1947 phypath_size, rsz)) != 0) 1948 return (ret); 1949 } 1950 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 || 1951 strcmp(type, VDEV_TYPE_REPLACING) == 0 || 1952 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) { 1953 nvlist_t **child; 1954 uint_t count; 1955 int i, ret; 1956 1957 if (nvlist_lookup_nvlist_array(nv, 1958 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0) 1959 return (EZFS_INVALCONFIG); 1960 1961 for (i = 0; i < count; i++) { 1962 ret = vdev_get_physpaths(child[i], physpath, 1963 phypath_size, rsz, is_spare); 1964 if (ret == EZFS_NOSPC) 1965 return (ret); 1966 } 1967 } 1968 1969 return (EZFS_POOL_INVALARG); 1970 } 1971 1972 /* 1973 * Get phys_path for a root pool config. 1974 * Return 0 on success; non-zero on failure. 1975 */ 1976 static int 1977 zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size) 1978 { 1979 size_t rsz; 1980 nvlist_t *vdev_root; 1981 nvlist_t **child; 1982 uint_t count; 1983 char *type; 1984 1985 rsz = 0; 1986 1987 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 1988 &vdev_root) != 0) 1989 return (EZFS_INVALCONFIG); 1990 1991 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 || 1992 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN, 1993 &child, &count) != 0) 1994 return (EZFS_INVALCONFIG); 1995 1996 /* 1997 * root pool can not have EFI labeled disks and can only have 1998 * a single top-level vdev. 1999 */ 2000 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1 || 2001 pool_uses_efi(vdev_root)) 2002 return (EZFS_POOL_INVALARG); 2003 2004 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz, 2005 B_FALSE); 2006 2007 /* No online devices */ 2008 if (rsz == 0) 2009 return (EZFS_NODEVICE); 2010 2011 return (0); 2012 } 2013 2014 /* 2015 * Get phys_path for a root pool 2016 * Return 0 on success; non-zero on failure. 2017 */ 2018 int 2019 zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size) 2020 { 2021 return (zpool_get_config_physpath(zhp->zpool_config, physpath, 2022 phypath_size)); 2023 } 2024 2025 /* 2026 * If the device has being dynamically expanded then we need to relabel 2027 * the disk to use the new unallocated space. 2028 */ 2029 static int 2030 zpool_relabel_disk(libzfs_handle_t *hdl, const char *name) 2031 { 2032 char path[MAXPATHLEN]; 2033 char errbuf[1024]; 2034 int fd, error; 2035 int (*_efi_use_whole_disk)(int); 2036 2037 if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT, 2038 "efi_use_whole_disk")) == NULL) 2039 return (-1); 2040 2041 (void) snprintf(path, sizeof (path), "%s/%s", RDISK_ROOT, name); 2042 2043 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 2044 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2045 "relabel '%s': unable to open device"), name); 2046 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 2047 } 2048 2049 /* 2050 * It's possible that we might encounter an error if the device 2051 * does not have any unallocated space left. If so, we simply 2052 * ignore that error and continue on. 2053 */ 2054 error = _efi_use_whole_disk(fd); 2055 (void) close(fd); 2056 if (error && error != VT_ENOSPC) { 2057 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2058 "relabel '%s': unable to read disk capacity"), name); 2059 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 2060 } 2061 return (0); 2062 } 2063 2064 /* 2065 * Bring the specified vdev online. The 'flags' parameter is a set of the 2066 * ZFS_ONLINE_* flags. 2067 */ 2068 int 2069 zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags, 2070 vdev_state_t *newstate) 2071 { 2072 zfs_cmd_t zc = { 0 }; 2073 char msg[1024]; 2074 nvlist_t *tgt; 2075 boolean_t avail_spare, l2cache, islog; 2076 libzfs_handle_t *hdl = zhp->zpool_hdl; 2077 2078 if (flags & ZFS_ONLINE_EXPAND) { 2079 (void) snprintf(msg, sizeof (msg), 2080 dgettext(TEXT_DOMAIN, "cannot expand %s"), path); 2081 } else { 2082 (void) snprintf(msg, sizeof (msg), 2083 dgettext(TEXT_DOMAIN, "cannot online %s"), path); 2084 } 2085 2086 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2087 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2088 &islog)) == NULL) 2089 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2090 2091 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2092 2093 if (avail_spare) 2094 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2095 2096 if (flags & ZFS_ONLINE_EXPAND || 2097 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) { 2098 char *pathname = NULL; 2099 uint64_t wholedisk = 0; 2100 2101 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK, 2102 &wholedisk); 2103 verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH, 2104 &pathname) == 0); 2105 2106 /* 2107 * XXX - L2ARC 1.0 devices can't support expansion. 2108 */ 2109 if (l2cache) { 2110 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2111 "cannot expand cache devices")); 2112 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg)); 2113 } 2114 2115 if (wholedisk) { 2116 pathname += strlen(DISK_ROOT) + 1; 2117 (void) zpool_relabel_disk(zhp->zpool_hdl, pathname); 2118 } 2119 } 2120 2121 zc.zc_cookie = VDEV_STATE_ONLINE; 2122 zc.zc_obj = flags; 2123 2124 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) { 2125 if (errno == EINVAL) { 2126 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split " 2127 "from this pool into a new one. Use '%s' " 2128 "instead"), "zpool detach"); 2129 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg)); 2130 } 2131 return (zpool_standard_error(hdl, errno, msg)); 2132 } 2133 2134 *newstate = zc.zc_cookie; 2135 return (0); 2136 } 2137 2138 /* 2139 * Take the specified vdev offline 2140 */ 2141 int 2142 zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp) 2143 { 2144 zfs_cmd_t zc = { 0 }; 2145 char msg[1024]; 2146 nvlist_t *tgt; 2147 boolean_t avail_spare, l2cache; 2148 libzfs_handle_t *hdl = zhp->zpool_hdl; 2149 2150 (void) snprintf(msg, sizeof (msg), 2151 dgettext(TEXT_DOMAIN, "cannot offline %s"), path); 2152 2153 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2154 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2155 NULL)) == NULL) 2156 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2157 2158 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2159 2160 if (avail_spare) 2161 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2162 2163 zc.zc_cookie = VDEV_STATE_OFFLINE; 2164 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0; 2165 2166 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2167 return (0); 2168 2169 switch (errno) { 2170 case EBUSY: 2171 2172 /* 2173 * There are no other replicas of this device. 2174 */ 2175 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2176 2177 case EEXIST: 2178 /* 2179 * The log device has unplayed logs 2180 */ 2181 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg)); 2182 2183 default: 2184 return (zpool_standard_error(hdl, errno, msg)); 2185 } 2186 } 2187 2188 /* 2189 * Mark the given vdev faulted. 2190 */ 2191 int 2192 zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2193 { 2194 zfs_cmd_t zc = { 0 }; 2195 char msg[1024]; 2196 libzfs_handle_t *hdl = zhp->zpool_hdl; 2197 2198 (void) snprintf(msg, sizeof (msg), 2199 dgettext(TEXT_DOMAIN, "cannot fault %llu"), guid); 2200 2201 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2202 zc.zc_guid = guid; 2203 zc.zc_cookie = VDEV_STATE_FAULTED; 2204 zc.zc_obj = aux; 2205 2206 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2207 return (0); 2208 2209 switch (errno) { 2210 case EBUSY: 2211 2212 /* 2213 * There are no other replicas of this device. 2214 */ 2215 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2216 2217 default: 2218 return (zpool_standard_error(hdl, errno, msg)); 2219 } 2220 2221 } 2222 2223 /* 2224 * Mark the given vdev degraded. 2225 */ 2226 int 2227 zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2228 { 2229 zfs_cmd_t zc = { 0 }; 2230 char msg[1024]; 2231 libzfs_handle_t *hdl = zhp->zpool_hdl; 2232 2233 (void) snprintf(msg, sizeof (msg), 2234 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), guid); 2235 2236 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2237 zc.zc_guid = guid; 2238 zc.zc_cookie = VDEV_STATE_DEGRADED; 2239 zc.zc_obj = aux; 2240 2241 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2242 return (0); 2243 2244 return (zpool_standard_error(hdl, errno, msg)); 2245 } 2246 2247 /* 2248 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as 2249 * a hot spare. 2250 */ 2251 static boolean_t 2252 is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which) 2253 { 2254 nvlist_t **child; 2255 uint_t c, children; 2256 char *type; 2257 2258 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child, 2259 &children) == 0) { 2260 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE, 2261 &type) == 0); 2262 2263 if (strcmp(type, VDEV_TYPE_SPARE) == 0 && 2264 children == 2 && child[which] == tgt) 2265 return (B_TRUE); 2266 2267 for (c = 0; c < children; c++) 2268 if (is_replacing_spare(child[c], tgt, which)) 2269 return (B_TRUE); 2270 } 2271 2272 return (B_FALSE); 2273 } 2274 2275 /* 2276 * Attach new_disk (fully described by nvroot) to old_disk. 2277 * If 'replacing' is specified, the new disk will replace the old one. 2278 */ 2279 int 2280 zpool_vdev_attach(zpool_handle_t *zhp, 2281 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing) 2282 { 2283 zfs_cmd_t zc = { 0 }; 2284 char msg[1024]; 2285 int ret; 2286 nvlist_t *tgt; 2287 boolean_t avail_spare, l2cache, islog; 2288 uint64_t val; 2289 char *path, *newname; 2290 nvlist_t **child; 2291 uint_t children; 2292 nvlist_t *config_root; 2293 libzfs_handle_t *hdl = zhp->zpool_hdl; 2294 boolean_t rootpool = pool_is_bootable(zhp); 2295 2296 if (replacing) 2297 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2298 "cannot replace %s with %s"), old_disk, new_disk); 2299 else 2300 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2301 "cannot attach %s to %s"), new_disk, old_disk); 2302 2303 /* 2304 * If this is a root pool, make sure that we're not attaching an 2305 * EFI labeled device. 2306 */ 2307 if (rootpool && pool_uses_efi(nvroot)) { 2308 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2309 "EFI labeled devices are not supported on root pools.")); 2310 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg)); 2311 } 2312 2313 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2314 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache, 2315 &islog)) == 0) 2316 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2317 2318 if (avail_spare) 2319 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2320 2321 if (l2cache) 2322 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2323 2324 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2325 zc.zc_cookie = replacing; 2326 2327 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 2328 &child, &children) != 0 || children != 1) { 2329 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2330 "new device must be a single disk")); 2331 return (zfs_error(hdl, EZFS_INVALCONFIG, msg)); 2332 } 2333 2334 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 2335 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0); 2336 2337 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL) 2338 return (-1); 2339 2340 /* 2341 * If the target is a hot spare that has been swapped in, we can only 2342 * replace it with another hot spare. 2343 */ 2344 if (replacing && 2345 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 && 2346 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache, 2347 NULL) == NULL || !avail_spare) && 2348 is_replacing_spare(config_root, tgt, 1)) { 2349 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2350 "can only be replaced by another hot spare")); 2351 free(newname); 2352 return (zfs_error(hdl, EZFS_BADTARGET, msg)); 2353 } 2354 2355 /* 2356 * If we are attempting to replace a spare, it canot be applied to an 2357 * already spared device. 2358 */ 2359 if (replacing && 2360 nvlist_lookup_string(child[0], ZPOOL_CONFIG_PATH, &path) == 0 && 2361 zpool_find_vdev(zhp, newname, &avail_spare, 2362 &l2cache, NULL) != NULL && avail_spare && 2363 is_replacing_spare(config_root, tgt, 0)) { 2364 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2365 "device has already been replaced with a spare")); 2366 free(newname); 2367 return (zfs_error(hdl, EZFS_BADTARGET, msg)); 2368 } 2369 2370 free(newname); 2371 2372 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 2373 return (-1); 2374 2375 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_VDEV_ATTACH, &zc); 2376 2377 zcmd_free_nvlists(&zc); 2378 2379 if (ret == 0) { 2380 if (rootpool) { 2381 /* 2382 * XXX - This should be removed once we can 2383 * automatically install the bootblocks on the 2384 * newly attached disk. 2385 */ 2386 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Please " 2387 "be sure to invoke %s to make '%s' bootable.\n"), 2388 BOOTCMD, new_disk); 2389 2390 /* 2391 * XXX need a better way to prevent user from 2392 * booting up a half-baked vdev. 2393 */ 2394 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make " 2395 "sure to wait until resilver is done " 2396 "before rebooting.\n")); 2397 } 2398 return (0); 2399 } 2400 2401 switch (errno) { 2402 case ENOTSUP: 2403 /* 2404 * Can't attach to or replace this type of vdev. 2405 */ 2406 if (replacing) { 2407 if (islog) 2408 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2409 "cannot replace a log with a spare")); 2410 else 2411 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2412 "cannot replace a replacing device")); 2413 } else { 2414 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2415 "can only attach to mirrors and top-level " 2416 "disks")); 2417 } 2418 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2419 break; 2420 2421 case EINVAL: 2422 /* 2423 * The new device must be a single disk. 2424 */ 2425 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2426 "new device must be a single disk")); 2427 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg); 2428 break; 2429 2430 case EBUSY: 2431 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"), 2432 new_disk); 2433 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2434 break; 2435 2436 case EOVERFLOW: 2437 /* 2438 * The new device is too small. 2439 */ 2440 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2441 "device is too small")); 2442 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2443 break; 2444 2445 case EDOM: 2446 /* 2447 * The new device has a different alignment requirement. 2448 */ 2449 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2450 "devices have different sector alignment")); 2451 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2452 break; 2453 2454 case ENAMETOOLONG: 2455 /* 2456 * The resulting top-level vdev spec won't fit in the label. 2457 */ 2458 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg); 2459 break; 2460 2461 default: 2462 (void) zpool_standard_error(hdl, errno, msg); 2463 } 2464 2465 return (-1); 2466 } 2467 2468 /* 2469 * Detach the specified device. 2470 */ 2471 int 2472 zpool_vdev_detach(zpool_handle_t *zhp, const char *path) 2473 { 2474 zfs_cmd_t zc = { 0 }; 2475 char msg[1024]; 2476 nvlist_t *tgt; 2477 boolean_t avail_spare, l2cache; 2478 libzfs_handle_t *hdl = zhp->zpool_hdl; 2479 2480 (void) snprintf(msg, sizeof (msg), 2481 dgettext(TEXT_DOMAIN, "cannot detach %s"), path); 2482 2483 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2484 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2485 NULL)) == 0) 2486 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2487 2488 if (avail_spare) 2489 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2490 2491 if (l2cache) 2492 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2493 2494 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2495 2496 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0) 2497 return (0); 2498 2499 switch (errno) { 2500 2501 case ENOTSUP: 2502 /* 2503 * Can't detach from this type of vdev. 2504 */ 2505 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only " 2506 "applicable to mirror and replacing vdevs")); 2507 (void) zfs_error(zhp->zpool_hdl, EZFS_BADTARGET, msg); 2508 break; 2509 2510 case EBUSY: 2511 /* 2512 * There are no other replicas of this device. 2513 */ 2514 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg); 2515 break; 2516 2517 default: 2518 (void) zpool_standard_error(hdl, errno, msg); 2519 } 2520 2521 return (-1); 2522 } 2523 2524 /* 2525 * Find a mirror vdev in the source nvlist. 2526 * 2527 * The mchild array contains a list of disks in one of the top-level mirrors 2528 * of the source pool. The schild array contains a list of disks that the 2529 * user specified on the command line. We loop over the mchild array to 2530 * see if any entry in the schild array matches. 2531 * 2532 * If a disk in the mchild array is found in the schild array, we return 2533 * the index of that entry. Otherwise we return -1. 2534 */ 2535 static int 2536 find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren, 2537 nvlist_t **schild, uint_t schildren) 2538 { 2539 uint_t mc; 2540 2541 for (mc = 0; mc < mchildren; mc++) { 2542 uint_t sc; 2543 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2544 mchild[mc], B_FALSE); 2545 2546 for (sc = 0; sc < schildren; sc++) { 2547 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2548 schild[sc], B_FALSE); 2549 boolean_t result = (strcmp(mpath, spath) == 0); 2550 2551 free(spath); 2552 if (result) { 2553 free(mpath); 2554 return (mc); 2555 } 2556 } 2557 2558 free(mpath); 2559 } 2560 2561 return (-1); 2562 } 2563 2564 /* 2565 * Split a mirror pool. If newroot points to null, then a new nvlist 2566 * is generated and it is the responsibility of the caller to free it. 2567 */ 2568 int 2569 zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot, 2570 nvlist_t *props, splitflags_t flags) 2571 { 2572 zfs_cmd_t zc = { 0 }; 2573 char msg[1024]; 2574 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL; 2575 nvlist_t **varray = NULL, *zc_props = NULL; 2576 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0; 2577 libzfs_handle_t *hdl = zhp->zpool_hdl; 2578 uint64_t vers; 2579 boolean_t freelist = B_FALSE, memory_err = B_TRUE; 2580 int retval = 0; 2581 2582 (void) snprintf(msg, sizeof (msg), 2583 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name); 2584 2585 if (!zpool_name_valid(hdl, B_FALSE, newname)) 2586 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 2587 2588 if ((config = zpool_get_config(zhp, NULL)) == NULL) { 2589 (void) fprintf(stderr, gettext("Internal error: unable to " 2590 "retrieve pool configuration\n")); 2591 return (-1); 2592 } 2593 2594 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree) 2595 == 0); 2596 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0); 2597 2598 if (props) { 2599 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name, 2600 props, vers, B_TRUE, msg)) == NULL) 2601 return (-1); 2602 } 2603 2604 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2605 &children) != 0) { 2606 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2607 "Source pool is missing vdev tree")); 2608 if (zc_props) 2609 nvlist_free(zc_props); 2610 return (-1); 2611 } 2612 2613 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *)); 2614 vcount = 0; 2615 2616 if (*newroot == NULL || 2617 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, 2618 &newchild, &newchildren) != 0) 2619 newchildren = 0; 2620 2621 for (c = 0; c < children; c++) { 2622 uint64_t is_log = B_FALSE, is_hole = B_FALSE; 2623 char *type; 2624 nvlist_t **mchild, *vdev; 2625 uint_t mchildren; 2626 int entry; 2627 2628 /* 2629 * Unlike cache & spares, slogs are stored in the 2630 * ZPOOL_CONFIG_CHILDREN array. We filter them out here. 2631 */ 2632 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 2633 &is_log); 2634 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, 2635 &is_hole); 2636 if (is_log || is_hole) { 2637 /* 2638 * Create a hole vdev and put it in the config. 2639 */ 2640 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0) 2641 goto out; 2642 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, 2643 VDEV_TYPE_HOLE) != 0) 2644 goto out; 2645 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE, 2646 1) != 0) 2647 goto out; 2648 if (lastlog == 0) 2649 lastlog = vcount; 2650 varray[vcount++] = vdev; 2651 continue; 2652 } 2653 lastlog = 0; 2654 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type) 2655 == 0); 2656 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) { 2657 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2658 "Source pool must be composed only of mirrors\n")); 2659 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2660 goto out; 2661 } 2662 2663 verify(nvlist_lookup_nvlist_array(child[c], 2664 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2665 2666 /* find or add an entry for this top-level vdev */ 2667 if (newchildren > 0 && 2668 (entry = find_vdev_entry(zhp, mchild, mchildren, 2669 newchild, newchildren)) >= 0) { 2670 /* We found a disk that the user specified. */ 2671 vdev = mchild[entry]; 2672 ++found; 2673 } else { 2674 /* User didn't specify a disk for this vdev. */ 2675 vdev = mchild[mchildren - 1]; 2676 } 2677 2678 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0) 2679 goto out; 2680 } 2681 2682 /* did we find every disk the user specified? */ 2683 if (found != newchildren) { 2684 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must " 2685 "include at most one disk from each mirror")); 2686 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2687 goto out; 2688 } 2689 2690 /* Prepare the nvlist for populating. */ 2691 if (*newroot == NULL) { 2692 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0) 2693 goto out; 2694 freelist = B_TRUE; 2695 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE, 2696 VDEV_TYPE_ROOT) != 0) 2697 goto out; 2698 } else { 2699 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0); 2700 } 2701 2702 /* Add all the children we found */ 2703 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray, 2704 lastlog == 0 ? vcount : lastlog) != 0) 2705 goto out; 2706 2707 /* 2708 * If we're just doing a dry run, exit now with success. 2709 */ 2710 if (flags.dryrun) { 2711 memory_err = B_FALSE; 2712 freelist = B_FALSE; 2713 goto out; 2714 } 2715 2716 /* now build up the config list & call the ioctl */ 2717 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0) 2718 goto out; 2719 2720 if (nvlist_add_nvlist(newconfig, 2721 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 || 2722 nvlist_add_string(newconfig, 2723 ZPOOL_CONFIG_POOL_NAME, newname) != 0 || 2724 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0) 2725 goto out; 2726 2727 /* 2728 * The new pool is automatically part of the namespace unless we 2729 * explicitly export it. 2730 */ 2731 if (!flags.import) 2732 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT; 2733 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2734 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string)); 2735 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0) 2736 goto out; 2737 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 2738 goto out; 2739 2740 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) { 2741 retval = zpool_standard_error(hdl, errno, msg); 2742 goto out; 2743 } 2744 2745 freelist = B_FALSE; 2746 memory_err = B_FALSE; 2747 2748 out: 2749 if (varray != NULL) { 2750 int v; 2751 2752 for (v = 0; v < vcount; v++) 2753 nvlist_free(varray[v]); 2754 free(varray); 2755 } 2756 zcmd_free_nvlists(&zc); 2757 if (zc_props) 2758 nvlist_free(zc_props); 2759 if (newconfig) 2760 nvlist_free(newconfig); 2761 if (freelist) { 2762 nvlist_free(*newroot); 2763 *newroot = NULL; 2764 } 2765 2766 if (retval != 0) 2767 return (retval); 2768 2769 if (memory_err) 2770 return (no_memory(hdl)); 2771 2772 return (0); 2773 } 2774 2775 /* 2776 * Remove the given device. Currently, this is supported only for hot spares 2777 * and level 2 cache devices. 2778 */ 2779 int 2780 zpool_vdev_remove(zpool_handle_t *zhp, const char *path) 2781 { 2782 zfs_cmd_t zc = { 0 }; 2783 char msg[1024]; 2784 nvlist_t *tgt; 2785 boolean_t avail_spare, l2cache, islog; 2786 libzfs_handle_t *hdl = zhp->zpool_hdl; 2787 uint64_t version; 2788 2789 (void) snprintf(msg, sizeof (msg), 2790 dgettext(TEXT_DOMAIN, "cannot remove %s"), path); 2791 2792 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2793 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2794 &islog)) == 0) 2795 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2796 /* 2797 * XXX - this should just go away. 2798 */ 2799 if (!avail_spare && !l2cache && !islog) { 2800 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2801 "only inactive hot spares, cache, top-level, " 2802 "or log devices can be removed")); 2803 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2804 } 2805 2806 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 2807 if (islog && version < SPA_VERSION_HOLES) { 2808 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2809 "pool must be upgrade to support log removal")); 2810 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 2811 } 2812 2813 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2814 2815 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0) 2816 return (0); 2817 2818 return (zpool_standard_error(hdl, errno, msg)); 2819 } 2820 2821 /* 2822 * Clear the errors for the pool, or the particular device if specified. 2823 */ 2824 int 2825 zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) 2826 { 2827 zfs_cmd_t zc = { 0 }; 2828 char msg[1024]; 2829 nvlist_t *tgt; 2830 zpool_rewind_policy_t policy; 2831 boolean_t avail_spare, l2cache; 2832 libzfs_handle_t *hdl = zhp->zpool_hdl; 2833 nvlist_t *nvi = NULL; 2834 2835 if (path) 2836 (void) snprintf(msg, sizeof (msg), 2837 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 2838 path); 2839 else 2840 (void) snprintf(msg, sizeof (msg), 2841 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 2842 zhp->zpool_name); 2843 2844 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2845 if (path) { 2846 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, 2847 &l2cache, NULL)) == 0) 2848 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2849 2850 /* 2851 * Don't allow error clearing for hot spares. Do allow 2852 * error clearing for l2cache devices. 2853 */ 2854 if (avail_spare) 2855 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2856 2857 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, 2858 &zc.zc_guid) == 0); 2859 } 2860 2861 zpool_get_rewind_policy(rewindnvl, &policy); 2862 zc.zc_cookie = policy.zrp_request; 2863 2864 if (zcmd_alloc_dst_nvlist(hdl, &zc, 8192) != 0) 2865 return (-1); 2866 2867 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, rewindnvl) != 0) 2868 return (-1); 2869 2870 if (zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc) == 0 || 2871 ((policy.zrp_request & ZPOOL_TRY_REWIND) && 2872 errno != EPERM && errno != EACCES)) { 2873 if (policy.zrp_request & 2874 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 2875 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 2876 zpool_rewind_exclaim(hdl, zc.zc_name, 2877 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), 2878 nvi); 2879 nvlist_free(nvi); 2880 } 2881 zcmd_free_nvlists(&zc); 2882 return (0); 2883 } 2884 2885 zcmd_free_nvlists(&zc); 2886 return (zpool_standard_error(hdl, errno, msg)); 2887 } 2888 2889 /* 2890 * Similar to zpool_clear(), but takes a GUID (used by fmd). 2891 */ 2892 int 2893 zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid) 2894 { 2895 zfs_cmd_t zc = { 0 }; 2896 char msg[1024]; 2897 libzfs_handle_t *hdl = zhp->zpool_hdl; 2898 2899 (void) snprintf(msg, sizeof (msg), 2900 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"), 2901 guid); 2902 2903 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2904 zc.zc_guid = guid; 2905 zc.zc_cookie = ZPOOL_NO_REWIND; 2906 2907 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0) 2908 return (0); 2909 2910 return (zpool_standard_error(hdl, errno, msg)); 2911 } 2912 2913 /* 2914 * Convert from a devid string to a path. 2915 */ 2916 static char * 2917 devid_to_path(char *devid_str) 2918 { 2919 ddi_devid_t devid; 2920 char *minor; 2921 char *path; 2922 devid_nmlist_t *list = NULL; 2923 int ret; 2924 2925 if (devid_str_decode(devid_str, &devid, &minor) != 0) 2926 return (NULL); 2927 2928 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list); 2929 2930 devid_str_free(minor); 2931 devid_free(devid); 2932 2933 if (ret != 0) 2934 return (NULL); 2935 2936 if ((path = strdup(list[0].devname)) == NULL) 2937 return (NULL); 2938 2939 devid_free_nmlist(list); 2940 2941 return (path); 2942 } 2943 2944 /* 2945 * Convert from a path to a devid string. 2946 */ 2947 static char * 2948 path_to_devid(const char *path) 2949 { 2950 int fd; 2951 ddi_devid_t devid; 2952 char *minor, *ret; 2953 2954 if ((fd = open(path, O_RDONLY)) < 0) 2955 return (NULL); 2956 2957 minor = NULL; 2958 ret = NULL; 2959 if (devid_get(fd, &devid) == 0) { 2960 if (devid_get_minor_name(fd, &minor) == 0) 2961 ret = devid_str_encode(devid, minor); 2962 if (minor != NULL) 2963 devid_str_free(minor); 2964 devid_free(devid); 2965 } 2966 (void) close(fd); 2967 2968 return (ret); 2969 } 2970 2971 /* 2972 * Issue the necessary ioctl() to update the stored path value for the vdev. We 2973 * ignore any failure here, since a common case is for an unprivileged user to 2974 * type 'zpool status', and we'll display the correct information anyway. 2975 */ 2976 static void 2977 set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path) 2978 { 2979 zfs_cmd_t zc = { 0 }; 2980 2981 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2982 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value)); 2983 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 2984 &zc.zc_guid) == 0); 2985 2986 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc); 2987 } 2988 2989 /* 2990 * Given a vdev, return the name to display in iostat. If the vdev has a path, 2991 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type. 2992 * We also check if this is a whole disk, in which case we strip off the 2993 * trailing 's0' slice name. 2994 * 2995 * This routine is also responsible for identifying when disks have been 2996 * reconfigured in a new location. The kernel will have opened the device by 2997 * devid, but the path will still refer to the old location. To catch this, we 2998 * first do a path -> devid translation (which is fast for the common case). If 2999 * the devid matches, we're done. If not, we do a reverse devid -> path 3000 * translation and issue the appropriate ioctl() to update the path of the vdev. 3001 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any 3002 * of these checks. 3003 */ 3004 char * 3005 zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv, 3006 boolean_t verbose) 3007 { 3008 char *path, *devid; 3009 uint64_t value; 3010 char buf[64]; 3011 vdev_stat_t *vs; 3012 uint_t vsc; 3013 3014 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, 3015 &value) == 0) { 3016 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3017 &value) == 0); 3018 (void) snprintf(buf, sizeof (buf), "%llu", 3019 (u_longlong_t)value); 3020 path = buf; 3021 } else if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0) { 3022 3023 /* 3024 * If the device is dead (faulted, offline, etc) then don't 3025 * bother opening it. Otherwise we may be forcing the user to 3026 * open a misbehaving device, which can have undesirable 3027 * effects. 3028 */ 3029 if ((nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 3030 (uint64_t **)&vs, &vsc) != 0 || 3031 vs->vs_state >= VDEV_STATE_DEGRADED) && 3032 zhp != NULL && 3033 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) { 3034 /* 3035 * Determine if the current path is correct. 3036 */ 3037 char *newdevid = path_to_devid(path); 3038 3039 if (newdevid == NULL || 3040 strcmp(devid, newdevid) != 0) { 3041 char *newpath; 3042 3043 if ((newpath = devid_to_path(devid)) != NULL) { 3044 /* 3045 * Update the path appropriately. 3046 */ 3047 set_path(zhp, nv, newpath); 3048 if (nvlist_add_string(nv, 3049 ZPOOL_CONFIG_PATH, newpath) == 0) 3050 verify(nvlist_lookup_string(nv, 3051 ZPOOL_CONFIG_PATH, 3052 &path) == 0); 3053 free(newpath); 3054 } 3055 } 3056 3057 if (newdevid) 3058 devid_str_free(newdevid); 3059 } 3060 3061 if (strncmp(path, "/dev/dsk/", 9) == 0) 3062 path += 9; 3063 3064 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 3065 &value) == 0 && value) { 3066 int pathlen = strlen(path); 3067 char *tmp = zfs_strdup(hdl, path); 3068 3069 /* 3070 * If it starts with c#, and ends with "s0", chop 3071 * the "s0" off, or if it ends with "s0/old", remove 3072 * the "s0" from the middle. 3073 */ 3074 if (CTD_CHECK(tmp)) { 3075 if (strcmp(&tmp[pathlen - 2], "s0") == 0) { 3076 tmp[pathlen - 2] = '\0'; 3077 } else if (pathlen > 6 && 3078 strcmp(&tmp[pathlen - 6], "s0/old") == 0) { 3079 (void) strcpy(&tmp[pathlen - 6], 3080 "/old"); 3081 } 3082 } 3083 return (tmp); 3084 } 3085 } else { 3086 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0); 3087 3088 /* 3089 * If it's a raidz device, we need to stick in the parity level. 3090 */ 3091 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) { 3092 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, 3093 &value) == 0); 3094 (void) snprintf(buf, sizeof (buf), "%s%llu", path, 3095 (u_longlong_t)value); 3096 path = buf; 3097 } 3098 3099 /* 3100 * We identify each top-level vdev by using a <type-id> 3101 * naming convention. 3102 */ 3103 if (verbose) { 3104 uint64_t id; 3105 3106 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 3107 &id) == 0); 3108 (void) snprintf(buf, sizeof (buf), "%s-%llu", path, 3109 (u_longlong_t)id); 3110 path = buf; 3111 } 3112 } 3113 3114 return (zfs_strdup(hdl, path)); 3115 } 3116 3117 static int 3118 zbookmark_compare(const void *a, const void *b) 3119 { 3120 return (memcmp(a, b, sizeof (zbookmark_t))); 3121 } 3122 3123 /* 3124 * Retrieve the persistent error log, uniquify the members, and return to the 3125 * caller. 3126 */ 3127 int 3128 zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp) 3129 { 3130 zfs_cmd_t zc = { 0 }; 3131 uint64_t count; 3132 zbookmark_t *zb = NULL; 3133 int i; 3134 3135 /* 3136 * Retrieve the raw error list from the kernel. If the number of errors 3137 * has increased, allocate more space and continue until we get the 3138 * entire list. 3139 */ 3140 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT, 3141 &count) == 0); 3142 if (count == 0) 3143 return (0); 3144 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl, 3145 count * sizeof (zbookmark_t))) == (uintptr_t)NULL) 3146 return (-1); 3147 zc.zc_nvlist_dst_size = count; 3148 (void) strcpy(zc.zc_name, zhp->zpool_name); 3149 for (;;) { 3150 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG, 3151 &zc) != 0) { 3152 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3153 if (errno == ENOMEM) { 3154 count = zc.zc_nvlist_dst_size; 3155 if ((zc.zc_nvlist_dst = (uintptr_t) 3156 zfs_alloc(zhp->zpool_hdl, count * 3157 sizeof (zbookmark_t))) == (uintptr_t)NULL) 3158 return (-1); 3159 } else { 3160 return (-1); 3161 } 3162 } else { 3163 break; 3164 } 3165 } 3166 3167 /* 3168 * Sort the resulting bookmarks. This is a little confusing due to the 3169 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last 3170 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks 3171 * _not_ copied as part of the process. So we point the start of our 3172 * array appropriate and decrement the total number of elements. 3173 */ 3174 zb = ((zbookmark_t *)(uintptr_t)zc.zc_nvlist_dst) + 3175 zc.zc_nvlist_dst_size; 3176 count -= zc.zc_nvlist_dst_size; 3177 3178 qsort(zb, count, sizeof (zbookmark_t), zbookmark_compare); 3179 3180 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0); 3181 3182 /* 3183 * Fill in the nverrlistp with nvlist's of dataset and object numbers. 3184 */ 3185 for (i = 0; i < count; i++) { 3186 nvlist_t *nv; 3187 3188 /* ignoring zb_blkid and zb_level for now */ 3189 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset && 3190 zb[i-1].zb_object == zb[i].zb_object) 3191 continue; 3192 3193 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0) 3194 goto nomem; 3195 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET, 3196 zb[i].zb_objset) != 0) { 3197 nvlist_free(nv); 3198 goto nomem; 3199 } 3200 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT, 3201 zb[i].zb_object) != 0) { 3202 nvlist_free(nv); 3203 goto nomem; 3204 } 3205 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) { 3206 nvlist_free(nv); 3207 goto nomem; 3208 } 3209 nvlist_free(nv); 3210 } 3211 3212 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3213 return (0); 3214 3215 nomem: 3216 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3217 return (no_memory(zhp->zpool_hdl)); 3218 } 3219 3220 /* 3221 * Upgrade a ZFS pool to the latest on-disk version. 3222 */ 3223 int 3224 zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version) 3225 { 3226 zfs_cmd_t zc = { 0 }; 3227 libzfs_handle_t *hdl = zhp->zpool_hdl; 3228 3229 (void) strcpy(zc.zc_name, zhp->zpool_name); 3230 zc.zc_cookie = new_version; 3231 3232 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0) 3233 return (zpool_standard_error_fmt(hdl, errno, 3234 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"), 3235 zhp->zpool_name)); 3236 return (0); 3237 } 3238 3239 void 3240 zpool_set_history_str(const char *subcommand, int argc, char **argv, 3241 char *history_str) 3242 { 3243 int i; 3244 3245 (void) strlcpy(history_str, subcommand, HIS_MAX_RECORD_LEN); 3246 for (i = 1; i < argc; i++) { 3247 if (strlen(history_str) + 1 + strlen(argv[i]) > 3248 HIS_MAX_RECORD_LEN) 3249 break; 3250 (void) strlcat(history_str, " ", HIS_MAX_RECORD_LEN); 3251 (void) strlcat(history_str, argv[i], HIS_MAX_RECORD_LEN); 3252 } 3253 } 3254 3255 /* 3256 * Stage command history for logging. 3257 */ 3258 int 3259 zpool_stage_history(libzfs_handle_t *hdl, const char *history_str) 3260 { 3261 if (history_str == NULL) 3262 return (EINVAL); 3263 3264 if (strlen(history_str) > HIS_MAX_RECORD_LEN) 3265 return (EINVAL); 3266 3267 if (hdl->libzfs_log_str != NULL) 3268 free(hdl->libzfs_log_str); 3269 3270 if ((hdl->libzfs_log_str = strdup(history_str)) == NULL) 3271 return (no_memory(hdl)); 3272 3273 return (0); 3274 } 3275 3276 /* 3277 * Perform ioctl to get some command history of a pool. 3278 * 3279 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the 3280 * logical offset of the history buffer to start reading from. 3281 * 3282 * Upon return, 'off' is the next logical offset to read from and 3283 * 'len' is the actual amount of bytes read into 'buf'. 3284 */ 3285 static int 3286 get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len) 3287 { 3288 zfs_cmd_t zc = { 0 }; 3289 libzfs_handle_t *hdl = zhp->zpool_hdl; 3290 3291 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3292 3293 zc.zc_history = (uint64_t)(uintptr_t)buf; 3294 zc.zc_history_len = *len; 3295 zc.zc_history_offset = *off; 3296 3297 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) { 3298 switch (errno) { 3299 case EPERM: 3300 return (zfs_error_fmt(hdl, EZFS_PERM, 3301 dgettext(TEXT_DOMAIN, 3302 "cannot show history for pool '%s'"), 3303 zhp->zpool_name)); 3304 case ENOENT: 3305 return (zfs_error_fmt(hdl, EZFS_NOHISTORY, 3306 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3307 "'%s'"), zhp->zpool_name)); 3308 case ENOTSUP: 3309 return (zfs_error_fmt(hdl, EZFS_BADVERSION, 3310 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3311 "'%s', pool must be upgraded"), zhp->zpool_name)); 3312 default: 3313 return (zpool_standard_error_fmt(hdl, errno, 3314 dgettext(TEXT_DOMAIN, 3315 "cannot get history for '%s'"), zhp->zpool_name)); 3316 } 3317 } 3318 3319 *len = zc.zc_history_len; 3320 *off = zc.zc_history_offset; 3321 3322 return (0); 3323 } 3324 3325 /* 3326 * Process the buffer of nvlists, unpacking and storing each nvlist record 3327 * into 'records'. 'leftover' is set to the number of bytes that weren't 3328 * processed as there wasn't a complete record. 3329 */ 3330 int 3331 zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover, 3332 nvlist_t ***records, uint_t *numrecords) 3333 { 3334 uint64_t reclen; 3335 nvlist_t *nv; 3336 int i; 3337 3338 while (bytes_read > sizeof (reclen)) { 3339 3340 /* get length of packed record (stored as little endian) */ 3341 for (i = 0, reclen = 0; i < sizeof (reclen); i++) 3342 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i); 3343 3344 if (bytes_read < sizeof (reclen) + reclen) 3345 break; 3346 3347 /* unpack record */ 3348 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0) 3349 return (ENOMEM); 3350 bytes_read -= sizeof (reclen) + reclen; 3351 buf += sizeof (reclen) + reclen; 3352 3353 /* add record to nvlist array */ 3354 (*numrecords)++; 3355 if (ISP2(*numrecords + 1)) { 3356 *records = realloc(*records, 3357 *numrecords * 2 * sizeof (nvlist_t *)); 3358 } 3359 (*records)[*numrecords - 1] = nv; 3360 } 3361 3362 *leftover = bytes_read; 3363 return (0); 3364 } 3365 3366 #define HIS_BUF_LEN (128*1024) 3367 3368 /* 3369 * Retrieve the command history of a pool. 3370 */ 3371 int 3372 zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp) 3373 { 3374 char buf[HIS_BUF_LEN]; 3375 uint64_t off = 0; 3376 nvlist_t **records = NULL; 3377 uint_t numrecords = 0; 3378 int err, i; 3379 3380 do { 3381 uint64_t bytes_read = sizeof (buf); 3382 uint64_t leftover; 3383 3384 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0) 3385 break; 3386 3387 /* if nothing else was read in, we're at EOF, just return */ 3388 if (!bytes_read) 3389 break; 3390 3391 if ((err = zpool_history_unpack(buf, bytes_read, 3392 &leftover, &records, &numrecords)) != 0) 3393 break; 3394 off -= leftover; 3395 3396 /* CONSTCOND */ 3397 } while (1); 3398 3399 if (!err) { 3400 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0); 3401 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD, 3402 records, numrecords) == 0); 3403 } 3404 for (i = 0; i < numrecords; i++) 3405 nvlist_free(records[i]); 3406 free(records); 3407 3408 return (err); 3409 } 3410 3411 void 3412 zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj, 3413 char *pathname, size_t len) 3414 { 3415 zfs_cmd_t zc = { 0 }; 3416 boolean_t mounted = B_FALSE; 3417 char *mntpnt = NULL; 3418 char dsname[MAXNAMELEN]; 3419 3420 if (dsobj == 0) { 3421 /* special case for the MOS */ 3422 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", obj); 3423 return; 3424 } 3425 3426 /* get the dataset's name */ 3427 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3428 zc.zc_obj = dsobj; 3429 if (ioctl(zhp->zpool_hdl->libzfs_fd, 3430 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) { 3431 /* just write out a path of two object numbers */ 3432 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>", 3433 dsobj, obj); 3434 return; 3435 } 3436 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname)); 3437 3438 /* find out if the dataset is mounted */ 3439 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt); 3440 3441 /* get the corrupted object's path */ 3442 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name)); 3443 zc.zc_obj = obj; 3444 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH, 3445 &zc) == 0) { 3446 if (mounted) { 3447 (void) snprintf(pathname, len, "%s%s", mntpnt, 3448 zc.zc_value); 3449 } else { 3450 (void) snprintf(pathname, len, "%s:%s", 3451 dsname, zc.zc_value); 3452 } 3453 } else { 3454 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, obj); 3455 } 3456 free(mntpnt); 3457 } 3458 3459 /* 3460 * Read the EFI label from the config, if a label does not exist then 3461 * pass back the error to the caller. If the caller has passed a non-NULL 3462 * diskaddr argument then we set it to the starting address of the EFI 3463 * partition. 3464 */ 3465 static int 3466 read_efi_label(nvlist_t *config, diskaddr_t *sb) 3467 { 3468 char *path; 3469 int fd; 3470 char diskname[MAXPATHLEN]; 3471 int err = -1; 3472 3473 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0) 3474 return (err); 3475 3476 (void) snprintf(diskname, sizeof (diskname), "%s%s", RDISK_ROOT, 3477 strrchr(path, '/')); 3478 if ((fd = open(diskname, O_RDONLY|O_NDELAY)) >= 0) { 3479 struct dk_gpt *vtoc; 3480 3481 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) { 3482 if (sb != NULL) 3483 *sb = vtoc->efi_parts[0].p_start; 3484 efi_free(vtoc); 3485 } 3486 (void) close(fd); 3487 } 3488 return (err); 3489 } 3490 3491 /* 3492 * determine where a partition starts on a disk in the current 3493 * configuration 3494 */ 3495 static diskaddr_t 3496 find_start_block(nvlist_t *config) 3497 { 3498 nvlist_t **child; 3499 uint_t c, children; 3500 diskaddr_t sb = MAXOFFSET_T; 3501 uint64_t wholedisk; 3502 3503 if (nvlist_lookup_nvlist_array(config, 3504 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) { 3505 if (nvlist_lookup_uint64(config, 3506 ZPOOL_CONFIG_WHOLE_DISK, 3507 &wholedisk) != 0 || !wholedisk) { 3508 return (MAXOFFSET_T); 3509 } 3510 if (read_efi_label(config, &sb) < 0) 3511 sb = MAXOFFSET_T; 3512 return (sb); 3513 } 3514 3515 for (c = 0; c < children; c++) { 3516 sb = find_start_block(child[c]); 3517 if (sb != MAXOFFSET_T) { 3518 return (sb); 3519 } 3520 } 3521 return (MAXOFFSET_T); 3522 } 3523 3524 /* 3525 * Label an individual disk. The name provided is the short name, 3526 * stripped of any leading /dev path. 3527 */ 3528 int 3529 zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, char *name) 3530 { 3531 char path[MAXPATHLEN]; 3532 struct dk_gpt *vtoc; 3533 int fd; 3534 size_t resv = EFI_MIN_RESV_SIZE; 3535 uint64_t slice_size; 3536 diskaddr_t start_block; 3537 char errbuf[1024]; 3538 3539 /* prepare an error message just in case */ 3540 (void) snprintf(errbuf, sizeof (errbuf), 3541 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name); 3542 3543 if (zhp) { 3544 nvlist_t *nvroot; 3545 3546 if (pool_is_bootable(zhp)) { 3547 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3548 "EFI labeled devices are not supported on root " 3549 "pools.")); 3550 return (zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf)); 3551 } 3552 3553 verify(nvlist_lookup_nvlist(zhp->zpool_config, 3554 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 3555 3556 if (zhp->zpool_start_block == 0) 3557 start_block = find_start_block(nvroot); 3558 else 3559 start_block = zhp->zpool_start_block; 3560 zhp->zpool_start_block = start_block; 3561 } else { 3562 /* new pool */ 3563 start_block = NEW_START_BLOCK; 3564 } 3565 3566 (void) snprintf(path, sizeof (path), "%s/%s%s", RDISK_ROOT, name, 3567 BACKUP_SLICE); 3568 3569 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 3570 /* 3571 * This shouldn't happen. We've long since verified that this 3572 * is a valid device. 3573 */ 3574 zfs_error_aux(hdl, 3575 dgettext(TEXT_DOMAIN, "unable to open device")); 3576 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 3577 } 3578 3579 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) { 3580 /* 3581 * The only way this can fail is if we run out of memory, or we 3582 * were unable to read the disk's capacity 3583 */ 3584 if (errno == ENOMEM) 3585 (void) no_memory(hdl); 3586 3587 (void) close(fd); 3588 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3589 "unable to read disk capacity"), name); 3590 3591 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 3592 } 3593 3594 slice_size = vtoc->efi_last_u_lba + 1; 3595 slice_size -= EFI_MIN_RESV_SIZE; 3596 if (start_block == MAXOFFSET_T) 3597 start_block = NEW_START_BLOCK; 3598 slice_size -= start_block; 3599 3600 vtoc->efi_parts[0].p_start = start_block; 3601 vtoc->efi_parts[0].p_size = slice_size; 3602 3603 /* 3604 * Why we use V_USR: V_BACKUP confuses users, and is considered 3605 * disposable by some EFI utilities (since EFI doesn't have a backup 3606 * slice). V_UNASSIGNED is supposed to be used only for zero size 3607 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT, 3608 * etc. were all pretty specific. V_USR is as close to reality as we 3609 * can get, in the absence of V_OTHER. 3610 */ 3611 vtoc->efi_parts[0].p_tag = V_USR; 3612 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs"); 3613 3614 vtoc->efi_parts[8].p_start = slice_size + start_block; 3615 vtoc->efi_parts[8].p_size = resv; 3616 vtoc->efi_parts[8].p_tag = V_RESERVED; 3617 3618 if (efi_write(fd, vtoc) != 0) { 3619 /* 3620 * Some block drivers (like pcata) may not support EFI 3621 * GPT labels. Print out a helpful error message dir- 3622 * ecting the user to manually label the disk and give 3623 * a specific slice. 3624 */ 3625 (void) close(fd); 3626 efi_free(vtoc); 3627 3628 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3629 "try using fdisk(1M) and then provide a specific slice")); 3630 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf)); 3631 } 3632 3633 (void) close(fd); 3634 efi_free(vtoc); 3635 return (0); 3636 } 3637 3638 static boolean_t 3639 supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf) 3640 { 3641 char *type; 3642 nvlist_t **child; 3643 uint_t children, c; 3644 3645 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_TYPE, &type) == 0); 3646 if (strcmp(type, VDEV_TYPE_RAIDZ) == 0 || 3647 strcmp(type, VDEV_TYPE_FILE) == 0 || 3648 strcmp(type, VDEV_TYPE_LOG) == 0 || 3649 strcmp(type, VDEV_TYPE_HOLE) == 0 || 3650 strcmp(type, VDEV_TYPE_MISSING) == 0) { 3651 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3652 "vdev type '%s' is not supported"), type); 3653 (void) zfs_error(hdl, EZFS_VDEVNOTSUP, errbuf); 3654 return (B_FALSE); 3655 } 3656 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN, 3657 &child, &children) == 0) { 3658 for (c = 0; c < children; c++) { 3659 if (!supported_dump_vdev_type(hdl, child[c], errbuf)) 3660 return (B_FALSE); 3661 } 3662 } 3663 return (B_TRUE); 3664 } 3665 3666 /* 3667 * check if this zvol is allowable for use as a dump device; zero if 3668 * it is, > 0 if it isn't, < 0 if it isn't a zvol 3669 */ 3670 int 3671 zvol_check_dump_config(char *arg) 3672 { 3673 zpool_handle_t *zhp = NULL; 3674 nvlist_t *config, *nvroot; 3675 char *p, *volname; 3676 nvlist_t **top; 3677 uint_t toplevels; 3678 libzfs_handle_t *hdl; 3679 char errbuf[1024]; 3680 char poolname[ZPOOL_MAXNAMELEN]; 3681 int pathlen = strlen(ZVOL_FULL_DEV_DIR); 3682 int ret = 1; 3683 3684 if (strncmp(arg, ZVOL_FULL_DEV_DIR, pathlen)) { 3685 return (-1); 3686 } 3687 3688 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 3689 "dump is not supported on device '%s'"), arg); 3690 3691 if ((hdl = libzfs_init()) == NULL) 3692 return (1); 3693 libzfs_print_on_error(hdl, B_TRUE); 3694 3695 volname = arg + pathlen; 3696 3697 /* check the configuration of the pool */ 3698 if ((p = strchr(volname, '/')) == NULL) { 3699 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3700 "malformed dataset name")); 3701 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 3702 return (1); 3703 } else if (p - volname >= ZFS_MAXNAMELEN) { 3704 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3705 "dataset name is too long")); 3706 (void) zfs_error(hdl, EZFS_NAMETOOLONG, errbuf); 3707 return (1); 3708 } else { 3709 (void) strncpy(poolname, volname, p - volname); 3710 poolname[p - volname] = '\0'; 3711 } 3712 3713 if ((zhp = zpool_open(hdl, poolname)) == NULL) { 3714 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3715 "could not open pool '%s'"), poolname); 3716 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 3717 goto out; 3718 } 3719 config = zpool_get_config(zhp, NULL); 3720 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 3721 &nvroot) != 0) { 3722 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3723 "could not obtain vdev configuration for '%s'"), poolname); 3724 (void) zfs_error(hdl, EZFS_INVALCONFIG, errbuf); 3725 goto out; 3726 } 3727 3728 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 3729 &top, &toplevels) == 0); 3730 if (toplevels != 1) { 3731 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3732 "'%s' has multiple top level vdevs"), poolname); 3733 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, errbuf); 3734 goto out; 3735 } 3736 3737 if (!supported_dump_vdev_type(hdl, top[0], errbuf)) { 3738 goto out; 3739 } 3740 ret = 0; 3741 3742 out: 3743 if (zhp) 3744 zpool_close(zhp); 3745 libzfs_fini(hdl); 3746 return (ret); 3747 } 3748