libzfs_pool.c revision 299430
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 * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 25 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 26 * Copyright 2016 Nexenta Systems, Inc. 27 */ 28 29#include <sys/types.h> 30#include <sys/stat.h> 31#include <ctype.h> 32#include <errno.h> 33#include <devid.h> 34#include <fcntl.h> 35#include <libintl.h> 36#include <stdio.h> 37#include <stdlib.h> 38#include <strings.h> 39#include <unistd.h> 40#include <libgen.h> 41#include <sys/zfs_ioctl.h> 42#include <dlfcn.h> 43 44#include "zfs_namecheck.h" 45#include "zfs_prop.h" 46#include "libzfs_impl.h" 47#include "zfs_comutil.h" 48#include "zfeature_common.h" 49 50static int read_efi_label(nvlist_t *config, diskaddr_t *sb); 51 52#define BACKUP_SLICE "s2" 53 54typedef struct prop_flags { 55 int create:1; /* Validate property on creation */ 56 int import:1; /* Validate property on import */ 57} prop_flags_t; 58 59/* 60 * ==================================================================== 61 * zpool property functions 62 * ==================================================================== 63 */ 64 65static int 66zpool_get_all_props(zpool_handle_t *zhp) 67{ 68 zfs_cmd_t zc = { 0 }; 69 libzfs_handle_t *hdl = zhp->zpool_hdl; 70 71 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 72 73 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 74 return (-1); 75 76 while (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) { 77 if (errno == ENOMEM) { 78 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 79 zcmd_free_nvlists(&zc); 80 return (-1); 81 } 82 } else { 83 zcmd_free_nvlists(&zc); 84 return (-1); 85 } 86 } 87 88 if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zpool_props) != 0) { 89 zcmd_free_nvlists(&zc); 90 return (-1); 91 } 92 93 zcmd_free_nvlists(&zc); 94 95 return (0); 96} 97 98static int 99zpool_props_refresh(zpool_handle_t *zhp) 100{ 101 nvlist_t *old_props; 102 103 old_props = zhp->zpool_props; 104 105 if (zpool_get_all_props(zhp) != 0) 106 return (-1); 107 108 nvlist_free(old_props); 109 return (0); 110} 111 112static char * 113zpool_get_prop_string(zpool_handle_t *zhp, zpool_prop_t prop, 114 zprop_source_t *src) 115{ 116 nvlist_t *nv, *nvl; 117 uint64_t ival; 118 char *value; 119 zprop_source_t source; 120 121 nvl = zhp->zpool_props; 122 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) { 123 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &ival) == 0); 124 source = ival; 125 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 126 } else { 127 source = ZPROP_SRC_DEFAULT; 128 if ((value = (char *)zpool_prop_default_string(prop)) == NULL) 129 value = "-"; 130 } 131 132 if (src) 133 *src = source; 134 135 return (value); 136} 137 138uint64_t 139zpool_get_prop_int(zpool_handle_t *zhp, zpool_prop_t prop, zprop_source_t *src) 140{ 141 nvlist_t *nv, *nvl; 142 uint64_t value; 143 zprop_source_t source; 144 145 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp)) { 146 /* 147 * zpool_get_all_props() has most likely failed because 148 * the pool is faulted, but if all we need is the top level 149 * vdev's guid then get it from the zhp config nvlist. 150 */ 151 if ((prop == ZPOOL_PROP_GUID) && 152 (nvlist_lookup_nvlist(zhp->zpool_config, 153 ZPOOL_CONFIG_VDEV_TREE, &nv) == 0) && 154 (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value) 155 == 0)) { 156 return (value); 157 } 158 return (zpool_prop_default_numeric(prop)); 159 } 160 161 nvl = zhp->zpool_props; 162 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) { 163 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &value) == 0); 164 source = value; 165 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 166 } else { 167 source = ZPROP_SRC_DEFAULT; 168 value = zpool_prop_default_numeric(prop); 169 } 170 171 if (src) 172 *src = source; 173 174 return (value); 175} 176 177/* 178 * Map VDEV STATE to printed strings. 179 */ 180const char * 181zpool_state_to_name(vdev_state_t state, vdev_aux_t aux) 182{ 183 switch (state) { 184 case VDEV_STATE_CLOSED: 185 case VDEV_STATE_OFFLINE: 186 return (gettext("OFFLINE")); 187 case VDEV_STATE_REMOVED: 188 return (gettext("REMOVED")); 189 case VDEV_STATE_CANT_OPEN: 190 if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG) 191 return (gettext("FAULTED")); 192 else if (aux == VDEV_AUX_SPLIT_POOL) 193 return (gettext("SPLIT")); 194 else 195 return (gettext("UNAVAIL")); 196 case VDEV_STATE_FAULTED: 197 return (gettext("FAULTED")); 198 case VDEV_STATE_DEGRADED: 199 return (gettext("DEGRADED")); 200 case VDEV_STATE_HEALTHY: 201 return (gettext("ONLINE")); 202 } 203 204 return (gettext("UNKNOWN")); 205} 206 207/* 208 * Map POOL STATE to printed strings. 209 */ 210const char * 211zpool_pool_state_to_name(pool_state_t state) 212{ 213 switch (state) { 214 case POOL_STATE_ACTIVE: 215 return (gettext("ACTIVE")); 216 case POOL_STATE_EXPORTED: 217 return (gettext("EXPORTED")); 218 case POOL_STATE_DESTROYED: 219 return (gettext("DESTROYED")); 220 case POOL_STATE_SPARE: 221 return (gettext("SPARE")); 222 case POOL_STATE_L2CACHE: 223 return (gettext("L2CACHE")); 224 case POOL_STATE_UNINITIALIZED: 225 return (gettext("UNINITIALIZED")); 226 case POOL_STATE_UNAVAIL: 227 return (gettext("UNAVAIL")); 228 case POOL_STATE_POTENTIALLY_ACTIVE: 229 return (gettext("POTENTIALLY_ACTIVE")); 230 } 231 232 return (gettext("UNKNOWN")); 233} 234 235/* 236 * Get a zpool property value for 'prop' and return the value in 237 * a pre-allocated buffer. 238 */ 239int 240zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len, 241 zprop_source_t *srctype, boolean_t literal) 242{ 243 uint64_t intval; 244 const char *strval; 245 zprop_source_t src = ZPROP_SRC_NONE; 246 nvlist_t *nvroot; 247 vdev_stat_t *vs; 248 uint_t vsc; 249 250 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) { 251 switch (prop) { 252 case ZPOOL_PROP_NAME: 253 (void) strlcpy(buf, zpool_get_name(zhp), len); 254 break; 255 256 case ZPOOL_PROP_HEALTH: 257 (void) strlcpy(buf, 258 zpool_pool_state_to_name(POOL_STATE_UNAVAIL), len); 259 break; 260 261 case ZPOOL_PROP_GUID: 262 intval = zpool_get_prop_int(zhp, prop, &src); 263 (void) snprintf(buf, len, "%llu", intval); 264 break; 265 266 case ZPOOL_PROP_ALTROOT: 267 case ZPOOL_PROP_CACHEFILE: 268 case ZPOOL_PROP_COMMENT: 269 if (zhp->zpool_props != NULL || 270 zpool_get_all_props(zhp) == 0) { 271 (void) strlcpy(buf, 272 zpool_get_prop_string(zhp, prop, &src), 273 len); 274 break; 275 } 276 /* FALLTHROUGH */ 277 default: 278 (void) strlcpy(buf, "-", len); 279 break; 280 } 281 282 if (srctype != NULL) 283 *srctype = src; 284 return (0); 285 } 286 287 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) && 288 prop != ZPOOL_PROP_NAME) 289 return (-1); 290 291 switch (zpool_prop_get_type(prop)) { 292 case PROP_TYPE_STRING: 293 (void) strlcpy(buf, zpool_get_prop_string(zhp, prop, &src), 294 len); 295 break; 296 297 case PROP_TYPE_NUMBER: 298 intval = zpool_get_prop_int(zhp, prop, &src); 299 300 switch (prop) { 301 case ZPOOL_PROP_SIZE: 302 case ZPOOL_PROP_ALLOCATED: 303 case ZPOOL_PROP_FREE: 304 case ZPOOL_PROP_FREEING: 305 case ZPOOL_PROP_LEAKED: 306 if (literal) { 307 (void) snprintf(buf, len, "%llu", 308 (u_longlong_t)intval); 309 } else { 310 (void) zfs_nicenum(intval, buf, len); 311 } 312 break; 313 case ZPOOL_PROP_EXPANDSZ: 314 if (intval == 0) { 315 (void) strlcpy(buf, "-", len); 316 } else if (literal) { 317 (void) snprintf(buf, len, "%llu", 318 (u_longlong_t)intval); 319 } else { 320 (void) zfs_nicenum(intval, buf, len); 321 } 322 break; 323 case ZPOOL_PROP_CAPACITY: 324 if (literal) { 325 (void) snprintf(buf, len, "%llu", 326 (u_longlong_t)intval); 327 } else { 328 (void) snprintf(buf, len, "%llu%%", 329 (u_longlong_t)intval); 330 } 331 break; 332 case ZPOOL_PROP_FRAGMENTATION: 333 if (intval == UINT64_MAX) { 334 (void) strlcpy(buf, "-", len); 335 } else { 336 (void) snprintf(buf, len, "%llu%%", 337 (u_longlong_t)intval); 338 } 339 break; 340 case ZPOOL_PROP_DEDUPRATIO: 341 (void) snprintf(buf, len, "%llu.%02llux", 342 (u_longlong_t)(intval / 100), 343 (u_longlong_t)(intval % 100)); 344 break; 345 case ZPOOL_PROP_HEALTH: 346 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 347 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 348 verify(nvlist_lookup_uint64_array(nvroot, 349 ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) 350 == 0); 351 352 (void) strlcpy(buf, zpool_state_to_name(intval, 353 vs->vs_aux), len); 354 break; 355 case ZPOOL_PROP_VERSION: 356 if (intval >= SPA_VERSION_FEATURES) { 357 (void) snprintf(buf, len, "-"); 358 break; 359 } 360 /* FALLTHROUGH */ 361 default: 362 (void) snprintf(buf, len, "%llu", intval); 363 } 364 break; 365 366 case PROP_TYPE_INDEX: 367 intval = zpool_get_prop_int(zhp, prop, &src); 368 if (zpool_prop_index_to_string(prop, intval, &strval) 369 != 0) 370 return (-1); 371 (void) strlcpy(buf, strval, len); 372 break; 373 374 default: 375 abort(); 376 } 377 378 if (srctype) 379 *srctype = src; 380 381 return (0); 382} 383 384/* 385 * Check if the bootfs name has the same pool name as it is set to. 386 * Assuming bootfs is a valid dataset name. 387 */ 388static boolean_t 389bootfs_name_valid(const char *pool, char *bootfs) 390{ 391 int len = strlen(pool); 392 393 if (!zfs_name_valid(bootfs, ZFS_TYPE_FILESYSTEM|ZFS_TYPE_SNAPSHOT)) 394 return (B_FALSE); 395 396 if (strncmp(pool, bootfs, len) == 0 && 397 (bootfs[len] == '/' || bootfs[len] == '\0')) 398 return (B_TRUE); 399 400 return (B_FALSE); 401} 402 403boolean_t 404zpool_is_bootable(zpool_handle_t *zhp) 405{ 406 char bootfs[ZPOOL_MAXNAMELEN]; 407 408 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs, 409 sizeof (bootfs), NULL, B_FALSE) == 0 && strncmp(bootfs, "-", 410 sizeof (bootfs)) != 0); 411} 412 413 414/* 415 * Given an nvlist of zpool properties to be set, validate that they are 416 * correct, and parse any numeric properties (index, boolean, etc) if they are 417 * specified as strings. 418 */ 419static nvlist_t * 420zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname, 421 nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf) 422{ 423 nvpair_t *elem; 424 nvlist_t *retprops; 425 zpool_prop_t prop; 426 char *strval; 427 uint64_t intval; 428 char *slash, *check; 429 struct stat64 statbuf; 430 zpool_handle_t *zhp; 431 432 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) { 433 (void) no_memory(hdl); 434 return (NULL); 435 } 436 437 elem = NULL; 438 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 439 const char *propname = nvpair_name(elem); 440 441 prop = zpool_name_to_prop(propname); 442 if (prop == ZPROP_INVAL && zpool_prop_feature(propname)) { 443 int err; 444 char *fname = strchr(propname, '@') + 1; 445 446 err = zfeature_lookup_name(fname, NULL); 447 if (err != 0) { 448 ASSERT3U(err, ==, ENOENT); 449 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 450 "invalid feature '%s'"), fname); 451 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 452 goto error; 453 } 454 455 if (nvpair_type(elem) != DATA_TYPE_STRING) { 456 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 457 "'%s' must be a string"), propname); 458 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 459 goto error; 460 } 461 462 (void) nvpair_value_string(elem, &strval); 463 if (strcmp(strval, ZFS_FEATURE_ENABLED) != 0) { 464 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 465 "property '%s' can only be set to " 466 "'enabled'"), propname); 467 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 468 goto error; 469 } 470 471 if (nvlist_add_uint64(retprops, propname, 0) != 0) { 472 (void) no_memory(hdl); 473 goto error; 474 } 475 continue; 476 } 477 478 /* 479 * Make sure this property is valid and applies to this type. 480 */ 481 if (prop == ZPROP_INVAL) { 482 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 483 "invalid property '%s'"), propname); 484 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 485 goto error; 486 } 487 488 if (zpool_prop_readonly(prop)) { 489 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 490 "is readonly"), propname); 491 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 492 goto error; 493 } 494 495 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops, 496 &strval, &intval, errbuf) != 0) 497 goto error; 498 499 /* 500 * Perform additional checking for specific properties. 501 */ 502 switch (prop) { 503 case ZPOOL_PROP_VERSION: 504 if (intval < version || 505 !SPA_VERSION_IS_SUPPORTED(intval)) { 506 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 507 "property '%s' number %d is invalid."), 508 propname, intval); 509 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 510 goto error; 511 } 512 break; 513 514 case ZPOOL_PROP_BOOTFS: 515 if (flags.create || flags.import) { 516 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 517 "property '%s' cannot be set at creation " 518 "or import time"), propname); 519 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 520 goto error; 521 } 522 523 if (version < SPA_VERSION_BOOTFS) { 524 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 525 "pool must be upgraded to support " 526 "'%s' property"), propname); 527 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 528 goto error; 529 } 530 531 /* 532 * bootfs property value has to be a dataset name and 533 * the dataset has to be in the same pool as it sets to. 534 */ 535 if (strval[0] != '\0' && !bootfs_name_valid(poolname, 536 strval)) { 537 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 538 "is an invalid name"), strval); 539 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 540 goto error; 541 } 542 543 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) { 544 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 545 "could not open pool '%s'"), poolname); 546 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 547 goto error; 548 } 549 zpool_close(zhp); 550 break; 551 552 case ZPOOL_PROP_ALTROOT: 553 if (!flags.create && !flags.import) { 554 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 555 "property '%s' can only be set during pool " 556 "creation or import"), propname); 557 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 558 goto error; 559 } 560 561 if (strval[0] != '/') { 562 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 563 "bad alternate root '%s'"), strval); 564 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 565 goto error; 566 } 567 break; 568 569 case ZPOOL_PROP_CACHEFILE: 570 if (strval[0] == '\0') 571 break; 572 573 if (strcmp(strval, "none") == 0) 574 break; 575 576 if (strval[0] != '/') { 577 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 578 "property '%s' must be empty, an " 579 "absolute path, or 'none'"), propname); 580 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 581 goto error; 582 } 583 584 slash = strrchr(strval, '/'); 585 586 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || 587 strcmp(slash, "/..") == 0) { 588 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 589 "'%s' is not a valid file"), strval); 590 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 591 goto error; 592 } 593 594 *slash = '\0'; 595 596 if (strval[0] != '\0' && 597 (stat64(strval, &statbuf) != 0 || 598 !S_ISDIR(statbuf.st_mode))) { 599 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 600 "'%s' is not a valid directory"), 601 strval); 602 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 603 goto error; 604 } 605 606 *slash = '/'; 607 break; 608 609 case ZPOOL_PROP_COMMENT: 610 for (check = strval; *check != '\0'; check++) { 611 if (!isprint(*check)) { 612 zfs_error_aux(hdl, 613 dgettext(TEXT_DOMAIN, 614 "comment may only have printable " 615 "characters")); 616 (void) zfs_error(hdl, EZFS_BADPROP, 617 errbuf); 618 goto error; 619 } 620 } 621 if (strlen(strval) > ZPROP_MAX_COMMENT) { 622 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 623 "comment must not exceed %d characters"), 624 ZPROP_MAX_COMMENT); 625 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 626 goto error; 627 } 628 break; 629 case ZPOOL_PROP_READONLY: 630 if (!flags.import) { 631 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 632 "property '%s' can only be set at " 633 "import time"), propname); 634 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 635 goto error; 636 } 637 break; 638 } 639 } 640 641 return (retprops); 642error: 643 nvlist_free(retprops); 644 return (NULL); 645} 646 647/* 648 * Set zpool property : propname=propval. 649 */ 650int 651zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval) 652{ 653 zfs_cmd_t zc = { 0 }; 654 int ret = -1; 655 char errbuf[1024]; 656 nvlist_t *nvl = NULL; 657 nvlist_t *realprops; 658 uint64_t version; 659 prop_flags_t flags = { 0 }; 660 661 (void) snprintf(errbuf, sizeof (errbuf), 662 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 663 zhp->zpool_name); 664 665 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 666 return (no_memory(zhp->zpool_hdl)); 667 668 if (nvlist_add_string(nvl, propname, propval) != 0) { 669 nvlist_free(nvl); 670 return (no_memory(zhp->zpool_hdl)); 671 } 672 673 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 674 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl, 675 zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) { 676 nvlist_free(nvl); 677 return (-1); 678 } 679 680 nvlist_free(nvl); 681 nvl = realprops; 682 683 /* 684 * Execute the corresponding ioctl() to set this property. 685 */ 686 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 687 688 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) { 689 nvlist_free(nvl); 690 return (-1); 691 } 692 693 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc); 694 695 zcmd_free_nvlists(&zc); 696 nvlist_free(nvl); 697 698 if (ret) 699 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf); 700 else 701 (void) zpool_props_refresh(zhp); 702 703 return (ret); 704} 705 706int 707zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp) 708{ 709 libzfs_handle_t *hdl = zhp->zpool_hdl; 710 zprop_list_t *entry; 711 char buf[ZFS_MAXPROPLEN]; 712 nvlist_t *features = NULL; 713 zprop_list_t **last; 714 boolean_t firstexpand = (NULL == *plp); 715 716 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0) 717 return (-1); 718 719 last = plp; 720 while (*last != NULL) 721 last = &(*last)->pl_next; 722 723 if ((*plp)->pl_all) 724 features = zpool_get_features(zhp); 725 726 if ((*plp)->pl_all && firstexpand) { 727 for (int i = 0; i < SPA_FEATURES; i++) { 728 zprop_list_t *entry = zfs_alloc(hdl, 729 sizeof (zprop_list_t)); 730 entry->pl_prop = ZPROP_INVAL; 731 entry->pl_user_prop = zfs_asprintf(hdl, "feature@%s", 732 spa_feature_table[i].fi_uname); 733 entry->pl_width = strlen(entry->pl_user_prop); 734 entry->pl_all = B_TRUE; 735 736 *last = entry; 737 last = &entry->pl_next; 738 } 739 } 740 741 /* add any unsupported features */ 742 for (nvpair_t *nvp = nvlist_next_nvpair(features, NULL); 743 nvp != NULL; nvp = nvlist_next_nvpair(features, nvp)) { 744 char *propname; 745 boolean_t found; 746 zprop_list_t *entry; 747 748 if (zfeature_is_supported(nvpair_name(nvp))) 749 continue; 750 751 propname = zfs_asprintf(hdl, "unsupported@%s", 752 nvpair_name(nvp)); 753 754 /* 755 * Before adding the property to the list make sure that no 756 * other pool already added the same property. 757 */ 758 found = B_FALSE; 759 entry = *plp; 760 while (entry != NULL) { 761 if (entry->pl_user_prop != NULL && 762 strcmp(propname, entry->pl_user_prop) == 0) { 763 found = B_TRUE; 764 break; 765 } 766 entry = entry->pl_next; 767 } 768 if (found) { 769 free(propname); 770 continue; 771 } 772 773 entry = zfs_alloc(hdl, sizeof (zprop_list_t)); 774 entry->pl_prop = ZPROP_INVAL; 775 entry->pl_user_prop = propname; 776 entry->pl_width = strlen(entry->pl_user_prop); 777 entry->pl_all = B_TRUE; 778 779 *last = entry; 780 last = &entry->pl_next; 781 } 782 783 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 784 785 if (entry->pl_fixed) 786 continue; 787 788 if (entry->pl_prop != ZPROP_INVAL && 789 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf), 790 NULL, B_FALSE) == 0) { 791 if (strlen(buf) > entry->pl_width) 792 entry->pl_width = strlen(buf); 793 } 794 } 795 796 return (0); 797} 798 799/* 800 * Get the state for the given feature on the given ZFS pool. 801 */ 802int 803zpool_prop_get_feature(zpool_handle_t *zhp, const char *propname, char *buf, 804 size_t len) 805{ 806 uint64_t refcount; 807 boolean_t found = B_FALSE; 808 nvlist_t *features = zpool_get_features(zhp); 809 boolean_t supported; 810 const char *feature = strchr(propname, '@') + 1; 811 812 supported = zpool_prop_feature(propname); 813 ASSERT(supported || zpool_prop_unsupported(propname)); 814 815 /* 816 * Convert from feature name to feature guid. This conversion is 817 * unecessary for unsupported@... properties because they already 818 * use guids. 819 */ 820 if (supported) { 821 int ret; 822 spa_feature_t fid; 823 824 ret = zfeature_lookup_name(feature, &fid); 825 if (ret != 0) { 826 (void) strlcpy(buf, "-", len); 827 return (ENOTSUP); 828 } 829 feature = spa_feature_table[fid].fi_guid; 830 } 831 832 if (nvlist_lookup_uint64(features, feature, &refcount) == 0) 833 found = B_TRUE; 834 835 if (supported) { 836 if (!found) { 837 (void) strlcpy(buf, ZFS_FEATURE_DISABLED, len); 838 } else { 839 if (refcount == 0) 840 (void) strlcpy(buf, ZFS_FEATURE_ENABLED, len); 841 else 842 (void) strlcpy(buf, ZFS_FEATURE_ACTIVE, len); 843 } 844 } else { 845 if (found) { 846 if (refcount == 0) { 847 (void) strcpy(buf, ZFS_UNSUPPORTED_INACTIVE); 848 } else { 849 (void) strcpy(buf, ZFS_UNSUPPORTED_READONLY); 850 } 851 } else { 852 (void) strlcpy(buf, "-", len); 853 return (ENOTSUP); 854 } 855 } 856 857 return (0); 858} 859 860/* 861 * Don't start the slice at the default block of 34; many storage 862 * devices will use a stripe width of 128k, so start there instead. 863 */ 864#define NEW_START_BLOCK 256 865 866/* 867 * Validate the given pool name, optionally putting an extended error message in 868 * 'buf'. 869 */ 870boolean_t 871zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool) 872{ 873 namecheck_err_t why; 874 char what; 875 int ret; 876 877 ret = pool_namecheck(pool, &why, &what); 878 879 /* 880 * The rules for reserved pool names were extended at a later point. 881 * But we need to support users with existing pools that may now be 882 * invalid. So we only check for this expanded set of names during a 883 * create (or import), and only in userland. 884 */ 885 if (ret == 0 && !isopen && 886 (strncmp(pool, "mirror", 6) == 0 || 887 strncmp(pool, "raidz", 5) == 0 || 888 strncmp(pool, "spare", 5) == 0 || 889 strcmp(pool, "log") == 0)) { 890 if (hdl != NULL) 891 zfs_error_aux(hdl, 892 dgettext(TEXT_DOMAIN, "name is reserved")); 893 return (B_FALSE); 894 } 895 896 897 if (ret != 0) { 898 if (hdl != NULL) { 899 switch (why) { 900 case NAME_ERR_TOOLONG: 901 zfs_error_aux(hdl, 902 dgettext(TEXT_DOMAIN, "name is too long")); 903 break; 904 905 case NAME_ERR_INVALCHAR: 906 zfs_error_aux(hdl, 907 dgettext(TEXT_DOMAIN, "invalid character " 908 "'%c' in pool name"), what); 909 break; 910 911 case NAME_ERR_NOLETTER: 912 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 913 "name must begin with a letter")); 914 break; 915 916 case NAME_ERR_RESERVED: 917 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 918 "name is reserved")); 919 break; 920 921 case NAME_ERR_DISKLIKE: 922 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 923 "pool name is reserved")); 924 break; 925 926 case NAME_ERR_LEADING_SLASH: 927 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 928 "leading slash in name")); 929 break; 930 931 case NAME_ERR_EMPTY_COMPONENT: 932 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 933 "empty component in name")); 934 break; 935 936 case NAME_ERR_TRAILING_SLASH: 937 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 938 "trailing slash in name")); 939 break; 940 941 case NAME_ERR_MULTIPLE_AT: 942 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 943 "multiple '@' delimiters in name")); 944 break; 945 946 } 947 } 948 return (B_FALSE); 949 } 950 951 return (B_TRUE); 952} 953 954/* 955 * Open a handle to the given pool, even if the pool is currently in the FAULTED 956 * state. 957 */ 958zpool_handle_t * 959zpool_open_canfail(libzfs_handle_t *hdl, const char *pool) 960{ 961 zpool_handle_t *zhp; 962 boolean_t missing; 963 964 /* 965 * Make sure the pool name is valid. 966 */ 967 if (!zpool_name_valid(hdl, B_TRUE, pool)) { 968 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME, 969 dgettext(TEXT_DOMAIN, "cannot open '%s'"), 970 pool); 971 return (NULL); 972 } 973 974 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 975 return (NULL); 976 977 zhp->zpool_hdl = hdl; 978 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 979 980 if (zpool_refresh_stats(zhp, &missing) != 0) { 981 zpool_close(zhp); 982 return (NULL); 983 } 984 985 if (missing) { 986 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool")); 987 (void) zfs_error_fmt(hdl, EZFS_NOENT, 988 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool); 989 zpool_close(zhp); 990 return (NULL); 991 } 992 993 return (zhp); 994} 995 996/* 997 * Like the above, but silent on error. Used when iterating over pools (because 998 * the configuration cache may be out of date). 999 */ 1000int 1001zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret) 1002{ 1003 zpool_handle_t *zhp; 1004 boolean_t missing; 1005 1006 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 1007 return (-1); 1008 1009 zhp->zpool_hdl = hdl; 1010 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 1011 1012 if (zpool_refresh_stats(zhp, &missing) != 0) { 1013 zpool_close(zhp); 1014 return (-1); 1015 } 1016 1017 if (missing) { 1018 zpool_close(zhp); 1019 *ret = NULL; 1020 return (0); 1021 } 1022 1023 *ret = zhp; 1024 return (0); 1025} 1026 1027/* 1028 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted 1029 * state. 1030 */ 1031zpool_handle_t * 1032zpool_open(libzfs_handle_t *hdl, const char *pool) 1033{ 1034 zpool_handle_t *zhp; 1035 1036 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL) 1037 return (NULL); 1038 1039 if (zhp->zpool_state == POOL_STATE_UNAVAIL) { 1040 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL, 1041 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name); 1042 zpool_close(zhp); 1043 return (NULL); 1044 } 1045 1046 return (zhp); 1047} 1048 1049/* 1050 * Close the handle. Simply frees the memory associated with the handle. 1051 */ 1052void 1053zpool_close(zpool_handle_t *zhp) 1054{ 1055 nvlist_free(zhp->zpool_config); 1056 nvlist_free(zhp->zpool_old_config); 1057 nvlist_free(zhp->zpool_props); 1058 free(zhp); 1059} 1060 1061/* 1062 * Return the name of the pool. 1063 */ 1064const char * 1065zpool_get_name(zpool_handle_t *zhp) 1066{ 1067 return (zhp->zpool_name); 1068} 1069 1070 1071/* 1072 * Return the state of the pool (ACTIVE or UNAVAILABLE) 1073 */ 1074int 1075zpool_get_state(zpool_handle_t *zhp) 1076{ 1077 return (zhp->zpool_state); 1078} 1079 1080/* 1081 * Create the named pool, using the provided vdev list. It is assumed 1082 * that the consumer has already validated the contents of the nvlist, so we 1083 * don't have to worry about error semantics. 1084 */ 1085int 1086zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot, 1087 nvlist_t *props, nvlist_t *fsprops) 1088{ 1089 zfs_cmd_t zc = { 0 }; 1090 nvlist_t *zc_fsprops = NULL; 1091 nvlist_t *zc_props = NULL; 1092 char msg[1024]; 1093 int ret = -1; 1094 1095 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1096 "cannot create '%s'"), pool); 1097 1098 if (!zpool_name_valid(hdl, B_FALSE, pool)) 1099 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 1100 1101 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1102 return (-1); 1103 1104 if (props) { 1105 prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE }; 1106 1107 if ((zc_props = zpool_valid_proplist(hdl, pool, props, 1108 SPA_VERSION_1, flags, msg)) == NULL) { 1109 goto create_failed; 1110 } 1111 } 1112 1113 if (fsprops) { 1114 uint64_t zoned; 1115 char *zonestr; 1116 1117 zoned = ((nvlist_lookup_string(fsprops, 1118 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) && 1119 strcmp(zonestr, "on") == 0); 1120 1121 if ((zc_fsprops = zfs_valid_proplist(hdl, ZFS_TYPE_FILESYSTEM, 1122 fsprops, zoned, NULL, NULL, msg)) == NULL) { 1123 goto create_failed; 1124 } 1125 if (!zc_props && 1126 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) { 1127 goto create_failed; 1128 } 1129 if (nvlist_add_nvlist(zc_props, 1130 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) { 1131 goto create_failed; 1132 } 1133 } 1134 1135 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 1136 goto create_failed; 1137 1138 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name)); 1139 1140 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) { 1141 1142 zcmd_free_nvlists(&zc); 1143 nvlist_free(zc_props); 1144 nvlist_free(zc_fsprops); 1145 1146 switch (errno) { 1147 case EBUSY: 1148 /* 1149 * This can happen if the user has specified the same 1150 * device multiple times. We can't reliably detect this 1151 * until we try to add it and see we already have a 1152 * label. 1153 */ 1154 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1155 "one or more vdevs refer to the same device")); 1156 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1157 1158 case ERANGE: 1159 /* 1160 * This happens if the record size is smaller or larger 1161 * than the allowed size range, or not a power of 2. 1162 * 1163 * NOTE: although zfs_valid_proplist is called earlier, 1164 * this case may have slipped through since the 1165 * pool does not exist yet and it is therefore 1166 * impossible to read properties e.g. max blocksize 1167 * from the pool. 1168 */ 1169 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1170 "record size invalid")); 1171 return (zfs_error(hdl, EZFS_BADPROP, msg)); 1172 1173 case EOVERFLOW: 1174 /* 1175 * This occurs when one of the devices is below 1176 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1177 * device was the problem device since there's no 1178 * reliable way to determine device size from userland. 1179 */ 1180 { 1181 char buf[64]; 1182 1183 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1184 1185 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1186 "one or more devices is less than the " 1187 "minimum size (%s)"), buf); 1188 } 1189 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1190 1191 case ENOSPC: 1192 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1193 "one or more devices is out of space")); 1194 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1195 1196 case ENOTBLK: 1197 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1198 "cache device must be a disk or disk slice")); 1199 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1200 1201 default: 1202 return (zpool_standard_error(hdl, errno, msg)); 1203 } 1204 } 1205 1206create_failed: 1207 zcmd_free_nvlists(&zc); 1208 nvlist_free(zc_props); 1209 nvlist_free(zc_fsprops); 1210 return (ret); 1211} 1212 1213/* 1214 * Destroy the given pool. It is up to the caller to ensure that there are no 1215 * datasets left in the pool. 1216 */ 1217int 1218zpool_destroy(zpool_handle_t *zhp, const char *log_str) 1219{ 1220 zfs_cmd_t zc = { 0 }; 1221 zfs_handle_t *zfp = NULL; 1222 libzfs_handle_t *hdl = zhp->zpool_hdl; 1223 char msg[1024]; 1224 1225 if (zhp->zpool_state == POOL_STATE_ACTIVE && 1226 (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL) 1227 return (-1); 1228 1229 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1230 zc.zc_history = (uint64_t)(uintptr_t)log_str; 1231 1232 if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) { 1233 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1234 "cannot destroy '%s'"), zhp->zpool_name); 1235 1236 if (errno == EROFS) { 1237 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1238 "one or more devices is read only")); 1239 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1240 } else { 1241 (void) zpool_standard_error(hdl, errno, msg); 1242 } 1243 1244 if (zfp) 1245 zfs_close(zfp); 1246 return (-1); 1247 } 1248 1249 if (zfp) { 1250 remove_mountpoint(zfp); 1251 zfs_close(zfp); 1252 } 1253 1254 return (0); 1255} 1256 1257/* 1258 * Add the given vdevs to the pool. The caller must have already performed the 1259 * necessary verification to ensure that the vdev specification is well-formed. 1260 */ 1261int 1262zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot) 1263{ 1264 zfs_cmd_t zc = { 0 }; 1265 int ret; 1266 libzfs_handle_t *hdl = zhp->zpool_hdl; 1267 char msg[1024]; 1268 nvlist_t **spares, **l2cache; 1269 uint_t nspares, nl2cache; 1270 1271 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1272 "cannot add to '%s'"), zhp->zpool_name); 1273 1274 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1275 SPA_VERSION_SPARES && 1276 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 1277 &spares, &nspares) == 0) { 1278 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1279 "upgraded to add hot spares")); 1280 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1281 } 1282 1283 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1284 SPA_VERSION_L2CACHE && 1285 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, 1286 &l2cache, &nl2cache) == 0) { 1287 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1288 "upgraded to add cache devices")); 1289 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1290 } 1291 1292 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1293 return (-1); 1294 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1295 1296 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) { 1297 switch (errno) { 1298 case EBUSY: 1299 /* 1300 * This can happen if the user has specified the same 1301 * device multiple times. We can't reliably detect this 1302 * until we try to add it and see we already have a 1303 * label. 1304 */ 1305 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1306 "one or more vdevs refer to the same device")); 1307 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1308 break; 1309 1310 case EOVERFLOW: 1311 /* 1312 * This occurrs when one of the devices is below 1313 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1314 * device was the problem device since there's no 1315 * reliable way to determine device size from userland. 1316 */ 1317 { 1318 char buf[64]; 1319 1320 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1321 1322 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1323 "device is less than the minimum " 1324 "size (%s)"), buf); 1325 } 1326 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1327 break; 1328 1329 case ENOTSUP: 1330 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1331 "pool must be upgraded to add these vdevs")); 1332 (void) zfs_error(hdl, EZFS_BADVERSION, msg); 1333 break; 1334 1335 case EDOM: 1336 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1337 "root pool can not have multiple vdevs" 1338 " or separate logs")); 1339 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, msg); 1340 break; 1341 1342 case ENOTBLK: 1343 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1344 "cache device must be a disk or disk slice")); 1345 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1346 break; 1347 1348 default: 1349 (void) zpool_standard_error(hdl, errno, msg); 1350 } 1351 1352 ret = -1; 1353 } else { 1354 ret = 0; 1355 } 1356 1357 zcmd_free_nvlists(&zc); 1358 1359 return (ret); 1360} 1361 1362/* 1363 * Exports the pool from the system. The caller must ensure that there are no 1364 * mounted datasets in the pool. 1365 */ 1366static int 1367zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce, 1368 const char *log_str) 1369{ 1370 zfs_cmd_t zc = { 0 }; 1371 char msg[1024]; 1372 1373 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1374 "cannot export '%s'"), zhp->zpool_name); 1375 1376 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1377 zc.zc_cookie = force; 1378 zc.zc_guid = hardforce; 1379 zc.zc_history = (uint64_t)(uintptr_t)log_str; 1380 1381 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) { 1382 switch (errno) { 1383 case EXDEV: 1384 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN, 1385 "use '-f' to override the following errors:\n" 1386 "'%s' has an active shared spare which could be" 1387 " used by other pools once '%s' is exported."), 1388 zhp->zpool_name, zhp->zpool_name); 1389 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE, 1390 msg)); 1391 default: 1392 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno, 1393 msg)); 1394 } 1395 } 1396 1397 return (0); 1398} 1399 1400int 1401zpool_export(zpool_handle_t *zhp, boolean_t force, const char *log_str) 1402{ 1403 return (zpool_export_common(zhp, force, B_FALSE, log_str)); 1404} 1405 1406int 1407zpool_export_force(zpool_handle_t *zhp, const char *log_str) 1408{ 1409 return (zpool_export_common(zhp, B_TRUE, B_TRUE, log_str)); 1410} 1411 1412static void 1413zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun, 1414 nvlist_t *config) 1415{ 1416 nvlist_t *nv = NULL; 1417 uint64_t rewindto; 1418 int64_t loss = -1; 1419 struct tm t; 1420 char timestr[128]; 1421 1422 if (!hdl->libzfs_printerr || config == NULL) 1423 return; 1424 1425 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 || 1426 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0) { 1427 return; 1428 } 1429 1430 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1431 return; 1432 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss); 1433 1434 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1435 strftime(timestr, 128, 0, &t) != 0) { 1436 if (dryrun) { 1437 (void) printf(dgettext(TEXT_DOMAIN, 1438 "Would be able to return %s " 1439 "to its state as of %s.\n"), 1440 name, timestr); 1441 } else { 1442 (void) printf(dgettext(TEXT_DOMAIN, 1443 "Pool %s returned to its state as of %s.\n"), 1444 name, timestr); 1445 } 1446 if (loss > 120) { 1447 (void) printf(dgettext(TEXT_DOMAIN, 1448 "%s approximately %lld "), 1449 dryrun ? "Would discard" : "Discarded", 1450 (loss + 30) / 60); 1451 (void) printf(dgettext(TEXT_DOMAIN, 1452 "minutes of transactions.\n")); 1453 } else if (loss > 0) { 1454 (void) printf(dgettext(TEXT_DOMAIN, 1455 "%s approximately %lld "), 1456 dryrun ? "Would discard" : "Discarded", loss); 1457 (void) printf(dgettext(TEXT_DOMAIN, 1458 "seconds of transactions.\n")); 1459 } 1460 } 1461} 1462 1463void 1464zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason, 1465 nvlist_t *config) 1466{ 1467 nvlist_t *nv = NULL; 1468 int64_t loss = -1; 1469 uint64_t edata = UINT64_MAX; 1470 uint64_t rewindto; 1471 struct tm t; 1472 char timestr[128]; 1473 1474 if (!hdl->libzfs_printerr) 1475 return; 1476 1477 if (reason >= 0) 1478 (void) printf(dgettext(TEXT_DOMAIN, "action: ")); 1479 else 1480 (void) printf(dgettext(TEXT_DOMAIN, "\t")); 1481 1482 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */ 1483 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 || 1484 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0 || 1485 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1486 goto no_info; 1487 1488 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss); 1489 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS, 1490 &edata); 1491 1492 (void) printf(dgettext(TEXT_DOMAIN, 1493 "Recovery is possible, but will result in some data loss.\n")); 1494 1495 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1496 strftime(timestr, 128, 0, &t) != 0) { 1497 (void) printf(dgettext(TEXT_DOMAIN, 1498 "\tReturning the pool to its state as of %s\n" 1499 "\tshould correct the problem. "), 1500 timestr); 1501 } else { 1502 (void) printf(dgettext(TEXT_DOMAIN, 1503 "\tReverting the pool to an earlier state " 1504 "should correct the problem.\n\t")); 1505 } 1506 1507 if (loss > 120) { 1508 (void) printf(dgettext(TEXT_DOMAIN, 1509 "Approximately %lld minutes of data\n" 1510 "\tmust be discarded, irreversibly. "), (loss + 30) / 60); 1511 } else if (loss > 0) { 1512 (void) printf(dgettext(TEXT_DOMAIN, 1513 "Approximately %lld seconds of data\n" 1514 "\tmust be discarded, irreversibly. "), loss); 1515 } 1516 if (edata != 0 && edata != UINT64_MAX) { 1517 if (edata == 1) { 1518 (void) printf(dgettext(TEXT_DOMAIN, 1519 "After rewind, at least\n" 1520 "\tone persistent user-data error will remain. ")); 1521 } else { 1522 (void) printf(dgettext(TEXT_DOMAIN, 1523 "After rewind, several\n" 1524 "\tpersistent user-data errors will remain. ")); 1525 } 1526 } 1527 (void) printf(dgettext(TEXT_DOMAIN, 1528 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "), 1529 reason >= 0 ? "clear" : "import", name); 1530 1531 (void) printf(dgettext(TEXT_DOMAIN, 1532 "A scrub of the pool\n" 1533 "\tis strongly recommended after recovery.\n")); 1534 return; 1535 1536no_info: 1537 (void) printf(dgettext(TEXT_DOMAIN, 1538 "Destroy and re-create the pool from\n\ta backup source.\n")); 1539} 1540 1541/* 1542 * zpool_import() is a contracted interface. Should be kept the same 1543 * if possible. 1544 * 1545 * Applications should use zpool_import_props() to import a pool with 1546 * new properties value to be set. 1547 */ 1548int 1549zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1550 char *altroot) 1551{ 1552 nvlist_t *props = NULL; 1553 int ret; 1554 1555 if (altroot != NULL) { 1556 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 1557 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1558 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1559 newname)); 1560 } 1561 1562 if (nvlist_add_string(props, 1563 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 || 1564 nvlist_add_string(props, 1565 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) { 1566 nvlist_free(props); 1567 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1568 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1569 newname)); 1570 } 1571 } 1572 1573 ret = zpool_import_props(hdl, config, newname, props, 1574 ZFS_IMPORT_NORMAL); 1575 nvlist_free(props); 1576 return (ret); 1577} 1578 1579static void 1580print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv, 1581 int indent) 1582{ 1583 nvlist_t **child; 1584 uint_t c, children; 1585 char *vname; 1586 uint64_t is_log = 0; 1587 1588 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, 1589 &is_log); 1590 1591 if (name != NULL) 1592 (void) printf("\t%*s%s%s\n", indent, "", name, 1593 is_log ? " [log]" : ""); 1594 1595 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 1596 &child, &children) != 0) 1597 return; 1598 1599 for (c = 0; c < children; c++) { 1600 vname = zpool_vdev_name(hdl, NULL, child[c], B_TRUE); 1601 print_vdev_tree(hdl, vname, child[c], indent + 2); 1602 free(vname); 1603 } 1604} 1605 1606void 1607zpool_print_unsup_feat(nvlist_t *config) 1608{ 1609 nvlist_t *nvinfo, *unsup_feat; 1610 1611 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 1612 0); 1613 verify(nvlist_lookup_nvlist(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT, 1614 &unsup_feat) == 0); 1615 1616 for (nvpair_t *nvp = nvlist_next_nvpair(unsup_feat, NULL); nvp != NULL; 1617 nvp = nvlist_next_nvpair(unsup_feat, nvp)) { 1618 char *desc; 1619 1620 verify(nvpair_type(nvp) == DATA_TYPE_STRING); 1621 verify(nvpair_value_string(nvp, &desc) == 0); 1622 1623 if (strlen(desc) > 0) 1624 (void) printf("\t%s (%s)\n", nvpair_name(nvp), desc); 1625 else 1626 (void) printf("\t%s\n", nvpair_name(nvp)); 1627 } 1628} 1629 1630/* 1631 * Import the given pool using the known configuration and a list of 1632 * properties to be set. The configuration should have come from 1633 * zpool_find_import(). The 'newname' parameters control whether the pool 1634 * is imported with a different name. 1635 */ 1636int 1637zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1638 nvlist_t *props, int flags) 1639{ 1640 zfs_cmd_t zc = { 0 }; 1641 zpool_rewind_policy_t policy; 1642 nvlist_t *nv = NULL; 1643 nvlist_t *nvinfo = NULL; 1644 nvlist_t *missing = NULL; 1645 char *thename; 1646 char *origname; 1647 int ret; 1648 int error = 0; 1649 char errbuf[1024]; 1650 1651 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 1652 &origname) == 0); 1653 1654 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1655 "cannot import pool '%s'"), origname); 1656 1657 if (newname != NULL) { 1658 if (!zpool_name_valid(hdl, B_FALSE, newname)) 1659 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME, 1660 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1661 newname)); 1662 thename = (char *)newname; 1663 } else { 1664 thename = origname; 1665 } 1666 1667 if (props != NULL) { 1668 uint64_t version; 1669 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 1670 1671 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, 1672 &version) == 0); 1673 1674 if ((props = zpool_valid_proplist(hdl, origname, 1675 props, version, flags, errbuf)) == NULL) 1676 return (-1); 1677 if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { 1678 nvlist_free(props); 1679 return (-1); 1680 } 1681 nvlist_free(props); 1682 } 1683 1684 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name)); 1685 1686 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, 1687 &zc.zc_guid) == 0); 1688 1689 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) { 1690 zcmd_free_nvlists(&zc); 1691 return (-1); 1692 } 1693 if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) { 1694 zcmd_free_nvlists(&zc); 1695 return (-1); 1696 } 1697 1698 zc.zc_cookie = flags; 1699 while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 && 1700 errno == ENOMEM) { 1701 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 1702 zcmd_free_nvlists(&zc); 1703 return (-1); 1704 } 1705 } 1706 if (ret != 0) 1707 error = errno; 1708 1709 (void) zcmd_read_dst_nvlist(hdl, &zc, &nv); 1710 1711 zcmd_free_nvlists(&zc); 1712 1713 zpool_get_rewind_policy(config, &policy); 1714 1715 if (error) { 1716 char desc[1024]; 1717 1718 /* 1719 * Dry-run failed, but we print out what success 1720 * looks like if we found a best txg 1721 */ 1722 if (policy.zrp_request & ZPOOL_TRY_REWIND) { 1723 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1724 B_TRUE, nv); 1725 nvlist_free(nv); 1726 return (-1); 1727 } 1728 1729 if (newname == NULL) 1730 (void) snprintf(desc, sizeof (desc), 1731 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1732 thename); 1733 else 1734 (void) snprintf(desc, sizeof (desc), 1735 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"), 1736 origname, thename); 1737 1738 switch (error) { 1739 case ENOTSUP: 1740 if (nv != NULL && nvlist_lookup_nvlist(nv, 1741 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 && 1742 nvlist_exists(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT)) { 1743 (void) printf(dgettext(TEXT_DOMAIN, "This " 1744 "pool uses the following feature(s) not " 1745 "supported by this system:\n")); 1746 zpool_print_unsup_feat(nv); 1747 if (nvlist_exists(nvinfo, 1748 ZPOOL_CONFIG_CAN_RDONLY)) { 1749 (void) printf(dgettext(TEXT_DOMAIN, 1750 "All unsupported features are only " 1751 "required for writing to the pool." 1752 "\nThe pool can be imported using " 1753 "'-o readonly=on'.\n")); 1754 } 1755 } 1756 /* 1757 * Unsupported version. 1758 */ 1759 (void) zfs_error(hdl, EZFS_BADVERSION, desc); 1760 break; 1761 1762 case EINVAL: 1763 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc); 1764 break; 1765 1766 case EROFS: 1767 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1768 "one or more devices is read only")); 1769 (void) zfs_error(hdl, EZFS_BADDEV, desc); 1770 break; 1771 1772 case ENXIO: 1773 if (nv && nvlist_lookup_nvlist(nv, 1774 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 && 1775 nvlist_lookup_nvlist(nvinfo, 1776 ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) { 1777 (void) printf(dgettext(TEXT_DOMAIN, 1778 "The devices below are missing, use " 1779 "'-m' to import the pool anyway:\n")); 1780 print_vdev_tree(hdl, NULL, missing, 2); 1781 (void) printf("\n"); 1782 } 1783 (void) zpool_standard_error(hdl, error, desc); 1784 break; 1785 1786 case EEXIST: 1787 (void) zpool_standard_error(hdl, error, desc); 1788 break; 1789 1790 default: 1791 (void) zpool_standard_error(hdl, error, desc); 1792 zpool_explain_recover(hdl, 1793 newname ? origname : thename, -error, nv); 1794 break; 1795 } 1796 1797 nvlist_free(nv); 1798 ret = -1; 1799 } else { 1800 zpool_handle_t *zhp; 1801 1802 /* 1803 * This should never fail, but play it safe anyway. 1804 */ 1805 if (zpool_open_silent(hdl, thename, &zhp) != 0) 1806 ret = -1; 1807 else if (zhp != NULL) 1808 zpool_close(zhp); 1809 if (policy.zrp_request & 1810 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 1811 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1812 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv); 1813 } 1814 nvlist_free(nv); 1815 return (0); 1816 } 1817 1818 return (ret); 1819} 1820 1821/* 1822 * Scan the pool. 1823 */ 1824int 1825zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func) 1826{ 1827 zfs_cmd_t zc = { 0 }; 1828 char msg[1024]; 1829 libzfs_handle_t *hdl = zhp->zpool_hdl; 1830 1831 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1832 zc.zc_cookie = func; 1833 1834 if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 || 1835 (errno == ENOENT && func != POOL_SCAN_NONE)) 1836 return (0); 1837 1838 if (func == POOL_SCAN_SCRUB) { 1839 (void) snprintf(msg, sizeof (msg), 1840 dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name); 1841 } else if (func == POOL_SCAN_NONE) { 1842 (void) snprintf(msg, sizeof (msg), 1843 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"), 1844 zc.zc_name); 1845 } else { 1846 assert(!"unexpected result"); 1847 } 1848 1849 if (errno == EBUSY) { 1850 nvlist_t *nvroot; 1851 pool_scan_stat_t *ps = NULL; 1852 uint_t psc; 1853 1854 verify(nvlist_lookup_nvlist(zhp->zpool_config, 1855 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 1856 (void) nvlist_lookup_uint64_array(nvroot, 1857 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc); 1858 if (ps && ps->pss_func == POOL_SCAN_SCRUB) 1859 return (zfs_error(hdl, EZFS_SCRUBBING, msg)); 1860 else 1861 return (zfs_error(hdl, EZFS_RESILVERING, msg)); 1862 } else if (errno == ENOENT) { 1863 return (zfs_error(hdl, EZFS_NO_SCRUB, msg)); 1864 } else { 1865 return (zpool_standard_error(hdl, errno, msg)); 1866 } 1867} 1868 1869#ifdef illumos 1870/* 1871 * This provides a very minimal check whether a given string is likely a 1872 * c#t#d# style string. Users of this are expected to do their own 1873 * verification of the s# part. 1874 */ 1875#define CTD_CHECK(str) (str && str[0] == 'c' && isdigit(str[1])) 1876 1877/* 1878 * More elaborate version for ones which may start with "/dev/dsk/" 1879 * and the like. 1880 */ 1881static int 1882ctd_check_path(char *str) 1883{ 1884 /* 1885 * If it starts with a slash, check the last component. 1886 */ 1887 if (str && str[0] == '/') { 1888 char *tmp = strrchr(str, '/'); 1889 1890 /* 1891 * If it ends in "/old", check the second-to-last 1892 * component of the string instead. 1893 */ 1894 if (tmp != str && strcmp(tmp, "/old") == 0) { 1895 for (tmp--; *tmp != '/'; tmp--) 1896 ; 1897 } 1898 str = tmp + 1; 1899 } 1900 return (CTD_CHECK(str)); 1901} 1902#endif 1903 1904/* 1905 * Find a vdev that matches the search criteria specified. We use the 1906 * the nvpair name to determine how we should look for the device. 1907 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL 1908 * spare; but FALSE if its an INUSE spare. 1909 */ 1910static nvlist_t * 1911vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare, 1912 boolean_t *l2cache, boolean_t *log) 1913{ 1914 uint_t c, children; 1915 nvlist_t **child; 1916 nvlist_t *ret; 1917 uint64_t is_log; 1918 char *srchkey; 1919 nvpair_t *pair = nvlist_next_nvpair(search, NULL); 1920 1921 /* Nothing to look for */ 1922 if (search == NULL || pair == NULL) 1923 return (NULL); 1924 1925 /* Obtain the key we will use to search */ 1926 srchkey = nvpair_name(pair); 1927 1928 switch (nvpair_type(pair)) { 1929 case DATA_TYPE_UINT64: 1930 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) { 1931 uint64_t srchval, theguid; 1932 1933 verify(nvpair_value_uint64(pair, &srchval) == 0); 1934 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 1935 &theguid) == 0); 1936 if (theguid == srchval) 1937 return (nv); 1938 } 1939 break; 1940 1941 case DATA_TYPE_STRING: { 1942 char *srchval, *val; 1943 1944 verify(nvpair_value_string(pair, &srchval) == 0); 1945 if (nvlist_lookup_string(nv, srchkey, &val) != 0) 1946 break; 1947 1948 /* 1949 * Search for the requested value. Special cases: 1950 * 1951 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in 1952 * "s0" or "s0/old". The "s0" part is hidden from the user, 1953 * but included in the string, so this matches around it. 1954 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE). 1955 * 1956 * Otherwise, all other searches are simple string compares. 1957 */ 1958#ifdef illumos 1959 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 && 1960 ctd_check_path(val)) { 1961 uint64_t wholedisk = 0; 1962 1963 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 1964 &wholedisk); 1965 if (wholedisk) { 1966 int slen = strlen(srchval); 1967 int vlen = strlen(val); 1968 1969 if (slen != vlen - 2) 1970 break; 1971 1972 /* 1973 * make_leaf_vdev() should only set 1974 * wholedisk for ZPOOL_CONFIG_PATHs which 1975 * will include "/dev/dsk/", giving plenty of 1976 * room for the indices used next. 1977 */ 1978 ASSERT(vlen >= 6); 1979 1980 /* 1981 * strings identical except trailing "s0" 1982 */ 1983 if (strcmp(&val[vlen - 2], "s0") == 0 && 1984 strncmp(srchval, val, slen) == 0) 1985 return (nv); 1986 1987 /* 1988 * strings identical except trailing "s0/old" 1989 */ 1990 if (strcmp(&val[vlen - 6], "s0/old") == 0 && 1991 strcmp(&srchval[slen - 4], "/old") == 0 && 1992 strncmp(srchval, val, slen - 4) == 0) 1993 return (nv); 1994 1995 break; 1996 } 1997 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 1998#else 1999 if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2000#endif 2001 char *type, *idx, *end, *p; 2002 uint64_t id, vdev_id; 2003 2004 /* 2005 * Determine our vdev type, keeping in mind 2006 * that the srchval is composed of a type and 2007 * vdev id pair (i.e. mirror-4). 2008 */ 2009 if ((type = strdup(srchval)) == NULL) 2010 return (NULL); 2011 2012 if ((p = strrchr(type, '-')) == NULL) { 2013 free(type); 2014 break; 2015 } 2016 idx = p + 1; 2017 *p = '\0'; 2018 2019 /* 2020 * If the types don't match then keep looking. 2021 */ 2022 if (strncmp(val, type, strlen(val)) != 0) { 2023 free(type); 2024 break; 2025 } 2026 2027 verify(strncmp(type, VDEV_TYPE_RAIDZ, 2028 strlen(VDEV_TYPE_RAIDZ)) == 0 || 2029 strncmp(type, VDEV_TYPE_MIRROR, 2030 strlen(VDEV_TYPE_MIRROR)) == 0); 2031 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 2032 &id) == 0); 2033 2034 errno = 0; 2035 vdev_id = strtoull(idx, &end, 10); 2036 2037 free(type); 2038 if (errno != 0) 2039 return (NULL); 2040 2041 /* 2042 * Now verify that we have the correct vdev id. 2043 */ 2044 if (vdev_id == id) 2045 return (nv); 2046 } 2047 2048 /* 2049 * Common case 2050 */ 2051 if (strcmp(srchval, val) == 0) 2052 return (nv); 2053 break; 2054 } 2055 2056 default: 2057 break; 2058 } 2059 2060 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 2061 &child, &children) != 0) 2062 return (NULL); 2063 2064 for (c = 0; c < children; c++) { 2065 if ((ret = vdev_to_nvlist_iter(child[c], search, 2066 avail_spare, l2cache, NULL)) != NULL) { 2067 /* 2068 * The 'is_log' value is only set for the toplevel 2069 * vdev, not the leaf vdevs. So we always lookup the 2070 * log device from the root of the vdev tree (where 2071 * 'log' is non-NULL). 2072 */ 2073 if (log != NULL && 2074 nvlist_lookup_uint64(child[c], 2075 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 && 2076 is_log) { 2077 *log = B_TRUE; 2078 } 2079 return (ret); 2080 } 2081 } 2082 2083 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, 2084 &child, &children) == 0) { 2085 for (c = 0; c < children; c++) { 2086 if ((ret = vdev_to_nvlist_iter(child[c], search, 2087 avail_spare, l2cache, NULL)) != NULL) { 2088 *avail_spare = B_TRUE; 2089 return (ret); 2090 } 2091 } 2092 } 2093 2094 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, 2095 &child, &children) == 0) { 2096 for (c = 0; c < children; c++) { 2097 if ((ret = vdev_to_nvlist_iter(child[c], search, 2098 avail_spare, l2cache, NULL)) != NULL) { 2099 *l2cache = B_TRUE; 2100 return (ret); 2101 } 2102 } 2103 } 2104 2105 return (NULL); 2106} 2107 2108/* 2109 * Given a physical path (minus the "/devices" prefix), find the 2110 * associated vdev. 2111 */ 2112nvlist_t * 2113zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath, 2114 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log) 2115{ 2116 nvlist_t *search, *nvroot, *ret; 2117 2118 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2119 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0); 2120 2121 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2122 &nvroot) == 0); 2123 2124 *avail_spare = B_FALSE; 2125 *l2cache = B_FALSE; 2126 if (log != NULL) 2127 *log = B_FALSE; 2128 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2129 nvlist_free(search); 2130 2131 return (ret); 2132} 2133 2134/* 2135 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz). 2136 */ 2137boolean_t 2138zpool_vdev_is_interior(const char *name) 2139{ 2140 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 || 2141 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0) 2142 return (B_TRUE); 2143 return (B_FALSE); 2144} 2145 2146nvlist_t * 2147zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare, 2148 boolean_t *l2cache, boolean_t *log) 2149{ 2150 char buf[MAXPATHLEN]; 2151 char *end; 2152 nvlist_t *nvroot, *search, *ret; 2153 uint64_t guid; 2154 2155 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2156 2157 guid = strtoull(path, &end, 10); 2158 if (guid != 0 && *end == '\0') { 2159 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0); 2160 } else if (zpool_vdev_is_interior(path)) { 2161 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0); 2162 } else if (path[0] != '/') { 2163 (void) snprintf(buf, sizeof (buf), "%s%s", _PATH_DEV, path); 2164 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0); 2165 } else { 2166 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0); 2167 } 2168 2169 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2170 &nvroot) == 0); 2171 2172 *avail_spare = B_FALSE; 2173 *l2cache = B_FALSE; 2174 if (log != NULL) 2175 *log = B_FALSE; 2176 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2177 nvlist_free(search); 2178 2179 return (ret); 2180} 2181 2182static int 2183vdev_online(nvlist_t *nv) 2184{ 2185 uint64_t ival; 2186 2187 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 || 2188 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 || 2189 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0) 2190 return (0); 2191 2192 return (1); 2193} 2194 2195/* 2196 * Helper function for zpool_get_physpaths(). 2197 */ 2198static int 2199vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size, 2200 size_t *bytes_written) 2201{ 2202 size_t bytes_left, pos, rsz; 2203 char *tmppath; 2204 const char *format; 2205 2206 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH, 2207 &tmppath) != 0) 2208 return (EZFS_NODEVICE); 2209 2210 pos = *bytes_written; 2211 bytes_left = physpath_size - pos; 2212 format = (pos == 0) ? "%s" : " %s"; 2213 2214 rsz = snprintf(physpath + pos, bytes_left, format, tmppath); 2215 *bytes_written += rsz; 2216 2217 if (rsz >= bytes_left) { 2218 /* if physpath was not copied properly, clear it */ 2219 if (bytes_left != 0) { 2220 physpath[pos] = 0; 2221 } 2222 return (EZFS_NOSPC); 2223 } 2224 return (0); 2225} 2226 2227static int 2228vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size, 2229 size_t *rsz, boolean_t is_spare) 2230{ 2231 char *type; 2232 int ret; 2233 2234 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) 2235 return (EZFS_INVALCONFIG); 2236 2237 if (strcmp(type, VDEV_TYPE_DISK) == 0) { 2238 /* 2239 * An active spare device has ZPOOL_CONFIG_IS_SPARE set. 2240 * For a spare vdev, we only want to boot from the active 2241 * spare device. 2242 */ 2243 if (is_spare) { 2244 uint64_t spare = 0; 2245 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 2246 &spare); 2247 if (!spare) 2248 return (EZFS_INVALCONFIG); 2249 } 2250 2251 if (vdev_online(nv)) { 2252 if ((ret = vdev_get_one_physpath(nv, physpath, 2253 phypath_size, rsz)) != 0) 2254 return (ret); 2255 } 2256 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 || 2257 strcmp(type, VDEV_TYPE_REPLACING) == 0 || 2258 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) { 2259 nvlist_t **child; 2260 uint_t count; 2261 int i, ret; 2262 2263 if (nvlist_lookup_nvlist_array(nv, 2264 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0) 2265 return (EZFS_INVALCONFIG); 2266 2267 for (i = 0; i < count; i++) { 2268 ret = vdev_get_physpaths(child[i], physpath, 2269 phypath_size, rsz, is_spare); 2270 if (ret == EZFS_NOSPC) 2271 return (ret); 2272 } 2273 } 2274 2275 return (EZFS_POOL_INVALARG); 2276} 2277 2278/* 2279 * Get phys_path for a root pool config. 2280 * Return 0 on success; non-zero on failure. 2281 */ 2282static int 2283zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size) 2284{ 2285 size_t rsz; 2286 nvlist_t *vdev_root; 2287 nvlist_t **child; 2288 uint_t count; 2289 char *type; 2290 2291 rsz = 0; 2292 2293 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2294 &vdev_root) != 0) 2295 return (EZFS_INVALCONFIG); 2296 2297 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 || 2298 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN, 2299 &child, &count) != 0) 2300 return (EZFS_INVALCONFIG); 2301 2302 /* 2303 * root pool can only have a single top-level vdev. 2304 */ 2305 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1) 2306 return (EZFS_POOL_INVALARG); 2307 2308 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz, 2309 B_FALSE); 2310 2311 /* No online devices */ 2312 if (rsz == 0) 2313 return (EZFS_NODEVICE); 2314 2315 return (0); 2316} 2317 2318/* 2319 * Get phys_path for a root pool 2320 * Return 0 on success; non-zero on failure. 2321 */ 2322int 2323zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size) 2324{ 2325 return (zpool_get_config_physpath(zhp->zpool_config, physpath, 2326 phypath_size)); 2327} 2328 2329/* 2330 * If the device has being dynamically expanded then we need to relabel 2331 * the disk to use the new unallocated space. 2332 */ 2333static int 2334zpool_relabel_disk(libzfs_handle_t *hdl, const char *name) 2335{ 2336#ifdef illumos 2337 char path[MAXPATHLEN]; 2338 char errbuf[1024]; 2339 int fd, error; 2340 int (*_efi_use_whole_disk)(int); 2341 2342 if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT, 2343 "efi_use_whole_disk")) == NULL) 2344 return (-1); 2345 2346 (void) snprintf(path, sizeof (path), "%s/%s", ZFS_RDISK_ROOT, name); 2347 2348 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 2349 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2350 "relabel '%s': unable to open device"), name); 2351 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 2352 } 2353 2354 /* 2355 * It's possible that we might encounter an error if the device 2356 * does not have any unallocated space left. If so, we simply 2357 * ignore that error and continue on. 2358 */ 2359 error = _efi_use_whole_disk(fd); 2360 (void) close(fd); 2361 if (error && error != VT_ENOSPC) { 2362 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2363 "relabel '%s': unable to read disk capacity"), name); 2364 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 2365 } 2366#endif /* illumos */ 2367 return (0); 2368} 2369 2370/* 2371 * Bring the specified vdev online. The 'flags' parameter is a set of the 2372 * ZFS_ONLINE_* flags. 2373 */ 2374int 2375zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags, 2376 vdev_state_t *newstate) 2377{ 2378 zfs_cmd_t zc = { 0 }; 2379 char msg[1024]; 2380 nvlist_t *tgt; 2381 boolean_t avail_spare, l2cache, islog; 2382 libzfs_handle_t *hdl = zhp->zpool_hdl; 2383 2384 if (flags & ZFS_ONLINE_EXPAND) { 2385 (void) snprintf(msg, sizeof (msg), 2386 dgettext(TEXT_DOMAIN, "cannot expand %s"), path); 2387 } else { 2388 (void) snprintf(msg, sizeof (msg), 2389 dgettext(TEXT_DOMAIN, "cannot online %s"), path); 2390 } 2391 2392 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2393 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2394 &islog)) == NULL) 2395 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2396 2397 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2398 2399 if (avail_spare) 2400 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2401 2402 if (flags & ZFS_ONLINE_EXPAND || 2403 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) { 2404 char *pathname = NULL; 2405 uint64_t wholedisk = 0; 2406 2407 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK, 2408 &wholedisk); 2409 verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH, 2410 &pathname) == 0); 2411 2412 /* 2413 * XXX - L2ARC 1.0 devices can't support expansion. 2414 */ 2415 if (l2cache) { 2416 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2417 "cannot expand cache devices")); 2418 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg)); 2419 } 2420 2421 if (wholedisk) { 2422 pathname += strlen(ZFS_DISK_ROOT) + 1; 2423 (void) zpool_relabel_disk(hdl, pathname); 2424 } 2425 } 2426 2427 zc.zc_cookie = VDEV_STATE_ONLINE; 2428 zc.zc_obj = flags; 2429 2430 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) { 2431 if (errno == EINVAL) { 2432 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split " 2433 "from this pool into a new one. Use '%s' " 2434 "instead"), "zpool detach"); 2435 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg)); 2436 } 2437 return (zpool_standard_error(hdl, errno, msg)); 2438 } 2439 2440 *newstate = zc.zc_cookie; 2441 return (0); 2442} 2443 2444/* 2445 * Take the specified vdev offline 2446 */ 2447int 2448zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp) 2449{ 2450 zfs_cmd_t zc = { 0 }; 2451 char msg[1024]; 2452 nvlist_t *tgt; 2453 boolean_t avail_spare, l2cache; 2454 libzfs_handle_t *hdl = zhp->zpool_hdl; 2455 2456 (void) snprintf(msg, sizeof (msg), 2457 dgettext(TEXT_DOMAIN, "cannot offline %s"), path); 2458 2459 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2460 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2461 NULL)) == NULL) 2462 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2463 2464 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2465 2466 if (avail_spare) 2467 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2468 2469 zc.zc_cookie = VDEV_STATE_OFFLINE; 2470 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0; 2471 2472 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2473 return (0); 2474 2475 switch (errno) { 2476 case EBUSY: 2477 2478 /* 2479 * There are no other replicas of this device. 2480 */ 2481 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2482 2483 case EEXIST: 2484 /* 2485 * The log device has unplayed logs 2486 */ 2487 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg)); 2488 2489 default: 2490 return (zpool_standard_error(hdl, errno, msg)); 2491 } 2492} 2493 2494/* 2495 * Mark the given vdev faulted. 2496 */ 2497int 2498zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2499{ 2500 zfs_cmd_t zc = { 0 }; 2501 char msg[1024]; 2502 libzfs_handle_t *hdl = zhp->zpool_hdl; 2503 2504 (void) snprintf(msg, sizeof (msg), 2505 dgettext(TEXT_DOMAIN, "cannot fault %llu"), guid); 2506 2507 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2508 zc.zc_guid = guid; 2509 zc.zc_cookie = VDEV_STATE_FAULTED; 2510 zc.zc_obj = aux; 2511 2512 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2513 return (0); 2514 2515 switch (errno) { 2516 case EBUSY: 2517 2518 /* 2519 * There are no other replicas of this device. 2520 */ 2521 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2522 2523 default: 2524 return (zpool_standard_error(hdl, errno, msg)); 2525 } 2526 2527} 2528 2529/* 2530 * Mark the given vdev degraded. 2531 */ 2532int 2533zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2534{ 2535 zfs_cmd_t zc = { 0 }; 2536 char msg[1024]; 2537 libzfs_handle_t *hdl = zhp->zpool_hdl; 2538 2539 (void) snprintf(msg, sizeof (msg), 2540 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), guid); 2541 2542 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2543 zc.zc_guid = guid; 2544 zc.zc_cookie = VDEV_STATE_DEGRADED; 2545 zc.zc_obj = aux; 2546 2547 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2548 return (0); 2549 2550 return (zpool_standard_error(hdl, errno, msg)); 2551} 2552 2553/* 2554 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as 2555 * a hot spare. 2556 */ 2557static boolean_t 2558is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which) 2559{ 2560 nvlist_t **child; 2561 uint_t c, children; 2562 char *type; 2563 2564 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child, 2565 &children) == 0) { 2566 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE, 2567 &type) == 0); 2568 2569 if (strcmp(type, VDEV_TYPE_SPARE) == 0 && 2570 children == 2 && child[which] == tgt) 2571 return (B_TRUE); 2572 2573 for (c = 0; c < children; c++) 2574 if (is_replacing_spare(child[c], tgt, which)) 2575 return (B_TRUE); 2576 } 2577 2578 return (B_FALSE); 2579} 2580 2581/* 2582 * Attach new_disk (fully described by nvroot) to old_disk. 2583 * If 'replacing' is specified, the new disk will replace the old one. 2584 */ 2585int 2586zpool_vdev_attach(zpool_handle_t *zhp, 2587 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing) 2588{ 2589 zfs_cmd_t zc = { 0 }; 2590 char msg[1024]; 2591 int ret; 2592 nvlist_t *tgt; 2593 boolean_t avail_spare, l2cache, islog; 2594 uint64_t val; 2595 char *newname; 2596 nvlist_t **child; 2597 uint_t children; 2598 nvlist_t *config_root; 2599 libzfs_handle_t *hdl = zhp->zpool_hdl; 2600 boolean_t rootpool = zpool_is_bootable(zhp); 2601 2602 if (replacing) 2603 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2604 "cannot replace %s with %s"), old_disk, new_disk); 2605 else 2606 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2607 "cannot attach %s to %s"), new_disk, old_disk); 2608 2609 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2610 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache, 2611 &islog)) == 0) 2612 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2613 2614 if (avail_spare) 2615 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2616 2617 if (l2cache) 2618 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2619 2620 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2621 zc.zc_cookie = replacing; 2622 2623 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 2624 &child, &children) != 0 || children != 1) { 2625 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2626 "new device must be a single disk")); 2627 return (zfs_error(hdl, EZFS_INVALCONFIG, msg)); 2628 } 2629 2630 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 2631 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0); 2632 2633 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL) 2634 return (-1); 2635 2636 /* 2637 * If the target is a hot spare that has been swapped in, we can only 2638 * replace it with another hot spare. 2639 */ 2640 if (replacing && 2641 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 && 2642 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache, 2643 NULL) == NULL || !avail_spare) && 2644 is_replacing_spare(config_root, tgt, 1)) { 2645 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2646 "can only be replaced by another hot spare")); 2647 free(newname); 2648 return (zfs_error(hdl, EZFS_BADTARGET, msg)); 2649 } 2650 2651 free(newname); 2652 2653 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 2654 return (-1); 2655 2656 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc); 2657 2658 zcmd_free_nvlists(&zc); 2659 2660 if (ret == 0) { 2661 if (rootpool) { 2662 /* 2663 * XXX need a better way to prevent user from 2664 * booting up a half-baked vdev. 2665 */ 2666 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make " 2667 "sure to wait until resilver is done " 2668 "before rebooting.\n")); 2669 (void) fprintf(stderr, "\n"); 2670 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "If " 2671 "you boot from pool '%s', you may need to update\n" 2672 "boot code on newly attached disk '%s'.\n\n" 2673 "Assuming you use GPT partitioning and 'da0' is " 2674 "your new boot disk\n" 2675 "you may use the following command:\n\n" 2676 "\tgpart bootcode -b /boot/pmbr -p " 2677 "/boot/gptzfsboot -i 1 da0\n\n"), 2678 zhp->zpool_name, new_disk); 2679 } 2680 return (0); 2681 } 2682 2683 switch (errno) { 2684 case ENOTSUP: 2685 /* 2686 * Can't attach to or replace this type of vdev. 2687 */ 2688 if (replacing) { 2689 uint64_t version = zpool_get_prop_int(zhp, 2690 ZPOOL_PROP_VERSION, NULL); 2691 2692 if (islog) 2693 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2694 "cannot replace a log with a spare")); 2695 else if (version >= SPA_VERSION_MULTI_REPLACE) 2696 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2697 "already in replacing/spare config; wait " 2698 "for completion or use 'zpool detach'")); 2699 else 2700 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2701 "cannot replace a replacing device")); 2702 } else { 2703 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2704 "can only attach to mirrors and top-level " 2705 "disks")); 2706 } 2707 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2708 break; 2709 2710 case EINVAL: 2711 /* 2712 * The new device must be a single disk. 2713 */ 2714 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2715 "new device must be a single disk")); 2716 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg); 2717 break; 2718 2719 case EBUSY: 2720 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"), 2721 new_disk); 2722 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2723 break; 2724 2725 case EOVERFLOW: 2726 /* 2727 * The new device is too small. 2728 */ 2729 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2730 "device is too small")); 2731 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2732 break; 2733 2734 case EDOM: 2735 /* 2736 * The new device has a different alignment requirement. 2737 */ 2738 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2739 "devices have different sector alignment")); 2740 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2741 break; 2742 2743 case ENAMETOOLONG: 2744 /* 2745 * The resulting top-level vdev spec won't fit in the label. 2746 */ 2747 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg); 2748 break; 2749 2750 default: 2751 (void) zpool_standard_error(hdl, errno, msg); 2752 } 2753 2754 return (-1); 2755} 2756 2757/* 2758 * Detach the specified device. 2759 */ 2760int 2761zpool_vdev_detach(zpool_handle_t *zhp, const char *path) 2762{ 2763 zfs_cmd_t zc = { 0 }; 2764 char msg[1024]; 2765 nvlist_t *tgt; 2766 boolean_t avail_spare, l2cache; 2767 libzfs_handle_t *hdl = zhp->zpool_hdl; 2768 2769 (void) snprintf(msg, sizeof (msg), 2770 dgettext(TEXT_DOMAIN, "cannot detach %s"), path); 2771 2772 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2773 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2774 NULL)) == 0) 2775 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2776 2777 if (avail_spare) 2778 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2779 2780 if (l2cache) 2781 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2782 2783 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2784 2785 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0) 2786 return (0); 2787 2788 switch (errno) { 2789 2790 case ENOTSUP: 2791 /* 2792 * Can't detach from this type of vdev. 2793 */ 2794 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only " 2795 "applicable to mirror and replacing vdevs")); 2796 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2797 break; 2798 2799 case EBUSY: 2800 /* 2801 * There are no other replicas of this device. 2802 */ 2803 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg); 2804 break; 2805 2806 default: 2807 (void) zpool_standard_error(hdl, errno, msg); 2808 } 2809 2810 return (-1); 2811} 2812 2813/* 2814 * Find a mirror vdev in the source nvlist. 2815 * 2816 * The mchild array contains a list of disks in one of the top-level mirrors 2817 * of the source pool. The schild array contains a list of disks that the 2818 * user specified on the command line. We loop over the mchild array to 2819 * see if any entry in the schild array matches. 2820 * 2821 * If a disk in the mchild array is found in the schild array, we return 2822 * the index of that entry. Otherwise we return -1. 2823 */ 2824static int 2825find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren, 2826 nvlist_t **schild, uint_t schildren) 2827{ 2828 uint_t mc; 2829 2830 for (mc = 0; mc < mchildren; mc++) { 2831 uint_t sc; 2832 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2833 mchild[mc], B_FALSE); 2834 2835 for (sc = 0; sc < schildren; sc++) { 2836 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2837 schild[sc], B_FALSE); 2838 boolean_t result = (strcmp(mpath, spath) == 0); 2839 2840 free(spath); 2841 if (result) { 2842 free(mpath); 2843 return (mc); 2844 } 2845 } 2846 2847 free(mpath); 2848 } 2849 2850 return (-1); 2851} 2852 2853/* 2854 * Split a mirror pool. If newroot points to null, then a new nvlist 2855 * is generated and it is the responsibility of the caller to free it. 2856 */ 2857int 2858zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot, 2859 nvlist_t *props, splitflags_t flags) 2860{ 2861 zfs_cmd_t zc = { 0 }; 2862 char msg[1024]; 2863 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL; 2864 nvlist_t **varray = NULL, *zc_props = NULL; 2865 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0; 2866 libzfs_handle_t *hdl = zhp->zpool_hdl; 2867 uint64_t vers; 2868 boolean_t freelist = B_FALSE, memory_err = B_TRUE; 2869 int retval = 0; 2870 2871 (void) snprintf(msg, sizeof (msg), 2872 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name); 2873 2874 if (!zpool_name_valid(hdl, B_FALSE, newname)) 2875 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 2876 2877 if ((config = zpool_get_config(zhp, NULL)) == NULL) { 2878 (void) fprintf(stderr, gettext("Internal error: unable to " 2879 "retrieve pool configuration\n")); 2880 return (-1); 2881 } 2882 2883 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree) 2884 == 0); 2885 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0); 2886 2887 if (props) { 2888 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 2889 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name, 2890 props, vers, flags, msg)) == NULL) 2891 return (-1); 2892 } 2893 2894 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2895 &children) != 0) { 2896 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2897 "Source pool is missing vdev tree")); 2898 nvlist_free(zc_props); 2899 return (-1); 2900 } 2901 2902 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *)); 2903 vcount = 0; 2904 2905 if (*newroot == NULL || 2906 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, 2907 &newchild, &newchildren) != 0) 2908 newchildren = 0; 2909 2910 for (c = 0; c < children; c++) { 2911 uint64_t is_log = B_FALSE, is_hole = B_FALSE; 2912 char *type; 2913 nvlist_t **mchild, *vdev; 2914 uint_t mchildren; 2915 int entry; 2916 2917 /* 2918 * Unlike cache & spares, slogs are stored in the 2919 * ZPOOL_CONFIG_CHILDREN array. We filter them out here. 2920 */ 2921 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 2922 &is_log); 2923 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, 2924 &is_hole); 2925 if (is_log || is_hole) { 2926 /* 2927 * Create a hole vdev and put it in the config. 2928 */ 2929 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0) 2930 goto out; 2931 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, 2932 VDEV_TYPE_HOLE) != 0) 2933 goto out; 2934 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE, 2935 1) != 0) 2936 goto out; 2937 if (lastlog == 0) 2938 lastlog = vcount; 2939 varray[vcount++] = vdev; 2940 continue; 2941 } 2942 lastlog = 0; 2943 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type) 2944 == 0); 2945 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) { 2946 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2947 "Source pool must be composed only of mirrors\n")); 2948 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2949 goto out; 2950 } 2951 2952 verify(nvlist_lookup_nvlist_array(child[c], 2953 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2954 2955 /* find or add an entry for this top-level vdev */ 2956 if (newchildren > 0 && 2957 (entry = find_vdev_entry(zhp, mchild, mchildren, 2958 newchild, newchildren)) >= 0) { 2959 /* We found a disk that the user specified. */ 2960 vdev = mchild[entry]; 2961 ++found; 2962 } else { 2963 /* User didn't specify a disk for this vdev. */ 2964 vdev = mchild[mchildren - 1]; 2965 } 2966 2967 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0) 2968 goto out; 2969 } 2970 2971 /* did we find every disk the user specified? */ 2972 if (found != newchildren) { 2973 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must " 2974 "include at most one disk from each mirror")); 2975 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2976 goto out; 2977 } 2978 2979 /* Prepare the nvlist for populating. */ 2980 if (*newroot == NULL) { 2981 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0) 2982 goto out; 2983 freelist = B_TRUE; 2984 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE, 2985 VDEV_TYPE_ROOT) != 0) 2986 goto out; 2987 } else { 2988 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0); 2989 } 2990 2991 /* Add all the children we found */ 2992 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray, 2993 lastlog == 0 ? vcount : lastlog) != 0) 2994 goto out; 2995 2996 /* 2997 * If we're just doing a dry run, exit now with success. 2998 */ 2999 if (flags.dryrun) { 3000 memory_err = B_FALSE; 3001 freelist = B_FALSE; 3002 goto out; 3003 } 3004 3005 /* now build up the config list & call the ioctl */ 3006 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0) 3007 goto out; 3008 3009 if (nvlist_add_nvlist(newconfig, 3010 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 || 3011 nvlist_add_string(newconfig, 3012 ZPOOL_CONFIG_POOL_NAME, newname) != 0 || 3013 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0) 3014 goto out; 3015 3016 /* 3017 * The new pool is automatically part of the namespace unless we 3018 * explicitly export it. 3019 */ 3020 if (!flags.import) 3021 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT; 3022 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3023 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string)); 3024 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0) 3025 goto out; 3026 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 3027 goto out; 3028 3029 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) { 3030 retval = zpool_standard_error(hdl, errno, msg); 3031 goto out; 3032 } 3033 3034 freelist = B_FALSE; 3035 memory_err = B_FALSE; 3036 3037out: 3038 if (varray != NULL) { 3039 int v; 3040 3041 for (v = 0; v < vcount; v++) 3042 nvlist_free(varray[v]); 3043 free(varray); 3044 } 3045 zcmd_free_nvlists(&zc); 3046 nvlist_free(zc_props); 3047 nvlist_free(newconfig); 3048 if (freelist) { 3049 nvlist_free(*newroot); 3050 *newroot = NULL; 3051 } 3052 3053 if (retval != 0) 3054 return (retval); 3055 3056 if (memory_err) 3057 return (no_memory(hdl)); 3058 3059 return (0); 3060} 3061 3062/* 3063 * Remove the given device. Currently, this is supported only for hot spares 3064 * and level 2 cache devices. 3065 */ 3066int 3067zpool_vdev_remove(zpool_handle_t *zhp, const char *path) 3068{ 3069 zfs_cmd_t zc = { 0 }; 3070 char msg[1024]; 3071 nvlist_t *tgt; 3072 boolean_t avail_spare, l2cache, islog; 3073 libzfs_handle_t *hdl = zhp->zpool_hdl; 3074 uint64_t version; 3075 3076 (void) snprintf(msg, sizeof (msg), 3077 dgettext(TEXT_DOMAIN, "cannot remove %s"), path); 3078 3079 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3080 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 3081 &islog)) == 0) 3082 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3083 /* 3084 * XXX - this should just go away. 3085 */ 3086 if (!avail_spare && !l2cache && !islog) { 3087 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3088 "only inactive hot spares, cache, top-level, " 3089 "or log devices can be removed")); 3090 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3091 } 3092 3093 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 3094 if (islog && version < SPA_VERSION_HOLES) { 3095 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3096 "pool must be upgrade to support log removal")); 3097 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 3098 } 3099 3100 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 3101 3102 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0) 3103 return (0); 3104 3105 return (zpool_standard_error(hdl, errno, msg)); 3106} 3107 3108/* 3109 * Clear the errors for the pool, or the particular device if specified. 3110 */ 3111int 3112zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) 3113{ 3114 zfs_cmd_t zc = { 0 }; 3115 char msg[1024]; 3116 nvlist_t *tgt; 3117 zpool_rewind_policy_t policy; 3118 boolean_t avail_spare, l2cache; 3119 libzfs_handle_t *hdl = zhp->zpool_hdl; 3120 nvlist_t *nvi = NULL; 3121 int error; 3122 3123 if (path) 3124 (void) snprintf(msg, sizeof (msg), 3125 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3126 path); 3127 else 3128 (void) snprintf(msg, sizeof (msg), 3129 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3130 zhp->zpool_name); 3131 3132 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3133 if (path) { 3134 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, 3135 &l2cache, NULL)) == 0) 3136 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3137 3138 /* 3139 * Don't allow error clearing for hot spares. Do allow 3140 * error clearing for l2cache devices. 3141 */ 3142 if (avail_spare) 3143 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 3144 3145 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, 3146 &zc.zc_guid) == 0); 3147 } 3148 3149 zpool_get_rewind_policy(rewindnvl, &policy); 3150 zc.zc_cookie = policy.zrp_request; 3151 3152 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0) 3153 return (-1); 3154 3155 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0) 3156 return (-1); 3157 3158 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 && 3159 errno == ENOMEM) { 3160 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 3161 zcmd_free_nvlists(&zc); 3162 return (-1); 3163 } 3164 } 3165 3166 if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) && 3167 errno != EPERM && errno != EACCES)) { 3168 if (policy.zrp_request & 3169 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 3170 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 3171 zpool_rewind_exclaim(hdl, zc.zc_name, 3172 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), 3173 nvi); 3174 nvlist_free(nvi); 3175 } 3176 zcmd_free_nvlists(&zc); 3177 return (0); 3178 } 3179 3180 zcmd_free_nvlists(&zc); 3181 return (zpool_standard_error(hdl, errno, msg)); 3182} 3183 3184/* 3185 * Similar to zpool_clear(), but takes a GUID (used by fmd). 3186 */ 3187int 3188zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid) 3189{ 3190 zfs_cmd_t zc = { 0 }; 3191 char msg[1024]; 3192 libzfs_handle_t *hdl = zhp->zpool_hdl; 3193 3194 (void) snprintf(msg, sizeof (msg), 3195 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"), 3196 guid); 3197 3198 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3199 zc.zc_guid = guid; 3200 zc.zc_cookie = ZPOOL_NO_REWIND; 3201 3202 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0) 3203 return (0); 3204 3205 return (zpool_standard_error(hdl, errno, msg)); 3206} 3207 3208/* 3209 * Change the GUID for a pool. 3210 */ 3211int 3212zpool_reguid(zpool_handle_t *zhp) 3213{ 3214 char msg[1024]; 3215 libzfs_handle_t *hdl = zhp->zpool_hdl; 3216 zfs_cmd_t zc = { 0 }; 3217 3218 (void) snprintf(msg, sizeof (msg), 3219 dgettext(TEXT_DOMAIN, "cannot reguid '%s'"), zhp->zpool_name); 3220 3221 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3222 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REGUID, &zc) == 0) 3223 return (0); 3224 3225 return (zpool_standard_error(hdl, errno, msg)); 3226} 3227 3228/* 3229 * Reopen the pool. 3230 */ 3231int 3232zpool_reopen(zpool_handle_t *zhp) 3233{ 3234 zfs_cmd_t zc = { 0 }; 3235 char msg[1024]; 3236 libzfs_handle_t *hdl = zhp->zpool_hdl; 3237 3238 (void) snprintf(msg, sizeof (msg), 3239 dgettext(TEXT_DOMAIN, "cannot reopen '%s'"), 3240 zhp->zpool_name); 3241 3242 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3243 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REOPEN, &zc) == 0) 3244 return (0); 3245 return (zpool_standard_error(hdl, errno, msg)); 3246} 3247 3248/* 3249 * Convert from a devid string to a path. 3250 */ 3251static char * 3252devid_to_path(char *devid_str) 3253{ 3254 ddi_devid_t devid; 3255 char *minor; 3256 char *path; 3257 devid_nmlist_t *list = NULL; 3258 int ret; 3259 3260 if (devid_str_decode(devid_str, &devid, &minor) != 0) 3261 return (NULL); 3262 3263 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list); 3264 3265 devid_str_free(minor); 3266 devid_free(devid); 3267 3268 if (ret != 0) 3269 return (NULL); 3270 3271 /* 3272 * In a case the strdup() fails, we will just return NULL below. 3273 */ 3274 path = strdup(list[0].devname); 3275 3276 devid_free_nmlist(list); 3277 3278 return (path); 3279} 3280 3281/* 3282 * Convert from a path to a devid string. 3283 */ 3284static char * 3285path_to_devid(const char *path) 3286{ 3287#ifdef have_devid 3288 int fd; 3289 ddi_devid_t devid; 3290 char *minor, *ret; 3291 3292 if ((fd = open(path, O_RDONLY)) < 0) 3293 return (NULL); 3294 3295 minor = NULL; 3296 ret = NULL; 3297 if (devid_get(fd, &devid) == 0) { 3298 if (devid_get_minor_name(fd, &minor) == 0) 3299 ret = devid_str_encode(devid, minor); 3300 if (minor != NULL) 3301 devid_str_free(minor); 3302 devid_free(devid); 3303 } 3304 (void) close(fd); 3305 3306 return (ret); 3307#else 3308 return (NULL); 3309#endif 3310} 3311 3312/* 3313 * Issue the necessary ioctl() to update the stored path value for the vdev. We 3314 * ignore any failure here, since a common case is for an unprivileged user to 3315 * type 'zpool status', and we'll display the correct information anyway. 3316 */ 3317static void 3318set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path) 3319{ 3320 zfs_cmd_t zc = { 0 }; 3321 3322 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3323 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value)); 3324 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3325 &zc.zc_guid) == 0); 3326 3327 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc); 3328} 3329 3330/* 3331 * Given a vdev, return the name to display in iostat. If the vdev has a path, 3332 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type. 3333 * We also check if this is a whole disk, in which case we strip off the 3334 * trailing 's0' slice name. 3335 * 3336 * This routine is also responsible for identifying when disks have been 3337 * reconfigured in a new location. The kernel will have opened the device by 3338 * devid, but the path will still refer to the old location. To catch this, we 3339 * first do a path -> devid translation (which is fast for the common case). If 3340 * the devid matches, we're done. If not, we do a reverse devid -> path 3341 * translation and issue the appropriate ioctl() to update the path of the vdev. 3342 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any 3343 * of these checks. 3344 */ 3345char * 3346zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv, 3347 boolean_t verbose) 3348{ 3349 char *path, *devid; 3350 uint64_t value; 3351 char buf[64]; 3352 vdev_stat_t *vs; 3353 uint_t vsc; 3354 int have_stats; 3355 int have_path; 3356 3357 have_stats = nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 3358 (uint64_t **)&vs, &vsc) == 0; 3359 have_path = nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0; 3360 3361 /* 3362 * If the device is not currently present, assume it will not 3363 * come back at the same device path. Display the device by GUID. 3364 */ 3365 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &value) == 0 || 3366 have_path && have_stats && vs->vs_state <= VDEV_STATE_CANT_OPEN) { 3367 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3368 &value) == 0); 3369 (void) snprintf(buf, sizeof (buf), "%llu", 3370 (u_longlong_t)value); 3371 path = buf; 3372 } else if (have_path) { 3373 3374 /* 3375 * If the device is dead (faulted, offline, etc) then don't 3376 * bother opening it. Otherwise we may be forcing the user to 3377 * open a misbehaving device, which can have undesirable 3378 * effects. 3379 */ 3380 if ((have_stats == 0 || 3381 vs->vs_state >= VDEV_STATE_DEGRADED) && 3382 zhp != NULL && 3383 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) { 3384 /* 3385 * Determine if the current path is correct. 3386 */ 3387 char *newdevid = path_to_devid(path); 3388 3389 if (newdevid == NULL || 3390 strcmp(devid, newdevid) != 0) { 3391 char *newpath; 3392 3393 if ((newpath = devid_to_path(devid)) != NULL) { 3394 /* 3395 * Update the path appropriately. 3396 */ 3397 set_path(zhp, nv, newpath); 3398 if (nvlist_add_string(nv, 3399 ZPOOL_CONFIG_PATH, newpath) == 0) 3400 verify(nvlist_lookup_string(nv, 3401 ZPOOL_CONFIG_PATH, 3402 &path) == 0); 3403 free(newpath); 3404 } 3405 } 3406 3407 if (newdevid) 3408 devid_str_free(newdevid); 3409 } 3410 3411#ifdef illumos 3412 if (strncmp(path, ZFS_DISK_ROOTD, strlen(ZFS_DISK_ROOTD)) == 0) 3413 path += strlen(ZFS_DISK_ROOTD); 3414 3415 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 3416 &value) == 0 && value) { 3417 int pathlen = strlen(path); 3418 char *tmp = zfs_strdup(hdl, path); 3419 3420 /* 3421 * If it starts with c#, and ends with "s0", chop 3422 * the "s0" off, or if it ends with "s0/old", remove 3423 * the "s0" from the middle. 3424 */ 3425 if (CTD_CHECK(tmp)) { 3426 if (strcmp(&tmp[pathlen - 2], "s0") == 0) { 3427 tmp[pathlen - 2] = '\0'; 3428 } else if (pathlen > 6 && 3429 strcmp(&tmp[pathlen - 6], "s0/old") == 0) { 3430 (void) strcpy(&tmp[pathlen - 6], 3431 "/old"); 3432 } 3433 } 3434 return (tmp); 3435 } 3436#else /* !illumos */ 3437 if (strncmp(path, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 3438 path += sizeof(_PATH_DEV) - 1; 3439#endif /* illumos */ 3440 } else { 3441 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0); 3442 3443 /* 3444 * If it's a raidz device, we need to stick in the parity level. 3445 */ 3446 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) { 3447 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, 3448 &value) == 0); 3449 (void) snprintf(buf, sizeof (buf), "%s%llu", path, 3450 (u_longlong_t)value); 3451 path = buf; 3452 } 3453 3454 /* 3455 * We identify each top-level vdev by using a <type-id> 3456 * naming convention. 3457 */ 3458 if (verbose) { 3459 uint64_t id; 3460 3461 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 3462 &id) == 0); 3463 (void) snprintf(buf, sizeof (buf), "%s-%llu", path, 3464 (u_longlong_t)id); 3465 path = buf; 3466 } 3467 } 3468 3469 return (zfs_strdup(hdl, path)); 3470} 3471 3472static int 3473zbookmark_mem_compare(const void *a, const void *b) 3474{ 3475 return (memcmp(a, b, sizeof (zbookmark_phys_t))); 3476} 3477 3478/* 3479 * Retrieve the persistent error log, uniquify the members, and return to the 3480 * caller. 3481 */ 3482int 3483zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp) 3484{ 3485 zfs_cmd_t zc = { 0 }; 3486 uint64_t count; 3487 zbookmark_phys_t *zb = NULL; 3488 int i; 3489 3490 /* 3491 * Retrieve the raw error list from the kernel. If the number of errors 3492 * has increased, allocate more space and continue until we get the 3493 * entire list. 3494 */ 3495 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT, 3496 &count) == 0); 3497 if (count == 0) 3498 return (0); 3499 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl, 3500 count * sizeof (zbookmark_phys_t))) == (uintptr_t)NULL) 3501 return (-1); 3502 zc.zc_nvlist_dst_size = count; 3503 (void) strcpy(zc.zc_name, zhp->zpool_name); 3504 for (;;) { 3505 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG, 3506 &zc) != 0) { 3507 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3508 if (errno == ENOMEM) { 3509 void *dst; 3510 3511 count = zc.zc_nvlist_dst_size; 3512 dst = zfs_alloc(zhp->zpool_hdl, count * 3513 sizeof (zbookmark_phys_t)); 3514 if (dst == NULL) 3515 return (-1); 3516 zc.zc_nvlist_dst = (uintptr_t)dst; 3517 } else { 3518 return (-1); 3519 } 3520 } else { 3521 break; 3522 } 3523 } 3524 3525 /* 3526 * Sort the resulting bookmarks. This is a little confusing due to the 3527 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last 3528 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks 3529 * _not_ copied as part of the process. So we point the start of our 3530 * array appropriate and decrement the total number of elements. 3531 */ 3532 zb = ((zbookmark_phys_t *)(uintptr_t)zc.zc_nvlist_dst) + 3533 zc.zc_nvlist_dst_size; 3534 count -= zc.zc_nvlist_dst_size; 3535 3536 qsort(zb, count, sizeof (zbookmark_phys_t), zbookmark_mem_compare); 3537 3538 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0); 3539 3540 /* 3541 * Fill in the nverrlistp with nvlist's of dataset and object numbers. 3542 */ 3543 for (i = 0; i < count; i++) { 3544 nvlist_t *nv; 3545 3546 /* ignoring zb_blkid and zb_level for now */ 3547 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset && 3548 zb[i-1].zb_object == zb[i].zb_object) 3549 continue; 3550 3551 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0) 3552 goto nomem; 3553 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET, 3554 zb[i].zb_objset) != 0) { 3555 nvlist_free(nv); 3556 goto nomem; 3557 } 3558 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT, 3559 zb[i].zb_object) != 0) { 3560 nvlist_free(nv); 3561 goto nomem; 3562 } 3563 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) { 3564 nvlist_free(nv); 3565 goto nomem; 3566 } 3567 nvlist_free(nv); 3568 } 3569 3570 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3571 return (0); 3572 3573nomem: 3574 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3575 return (no_memory(zhp->zpool_hdl)); 3576} 3577 3578/* 3579 * Upgrade a ZFS pool to the latest on-disk version. 3580 */ 3581int 3582zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version) 3583{ 3584 zfs_cmd_t zc = { 0 }; 3585 libzfs_handle_t *hdl = zhp->zpool_hdl; 3586 3587 (void) strcpy(zc.zc_name, zhp->zpool_name); 3588 zc.zc_cookie = new_version; 3589 3590 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0) 3591 return (zpool_standard_error_fmt(hdl, errno, 3592 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"), 3593 zhp->zpool_name)); 3594 return (0); 3595} 3596 3597void 3598zfs_save_arguments(int argc, char **argv, char *string, int len) 3599{ 3600 (void) strlcpy(string, basename(argv[0]), len); 3601 for (int i = 1; i < argc; i++) { 3602 (void) strlcat(string, " ", len); 3603 (void) strlcat(string, argv[i], len); 3604 } 3605} 3606 3607int 3608zpool_log_history(libzfs_handle_t *hdl, const char *message) 3609{ 3610 zfs_cmd_t zc = { 0 }; 3611 nvlist_t *args; 3612 int err; 3613 3614 args = fnvlist_alloc(); 3615 fnvlist_add_string(args, "message", message); 3616 err = zcmd_write_src_nvlist(hdl, &zc, args); 3617 if (err == 0) 3618 err = ioctl(hdl->libzfs_fd, ZFS_IOC_LOG_HISTORY, &zc); 3619 nvlist_free(args); 3620 zcmd_free_nvlists(&zc); 3621 return (err); 3622} 3623 3624/* 3625 * Perform ioctl to get some command history of a pool. 3626 * 3627 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the 3628 * logical offset of the history buffer to start reading from. 3629 * 3630 * Upon return, 'off' is the next logical offset to read from and 3631 * 'len' is the actual amount of bytes read into 'buf'. 3632 */ 3633static int 3634get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len) 3635{ 3636 zfs_cmd_t zc = { 0 }; 3637 libzfs_handle_t *hdl = zhp->zpool_hdl; 3638 3639 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3640 3641 zc.zc_history = (uint64_t)(uintptr_t)buf; 3642 zc.zc_history_len = *len; 3643 zc.zc_history_offset = *off; 3644 3645 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) { 3646 switch (errno) { 3647 case EPERM: 3648 return (zfs_error_fmt(hdl, EZFS_PERM, 3649 dgettext(TEXT_DOMAIN, 3650 "cannot show history for pool '%s'"), 3651 zhp->zpool_name)); 3652 case ENOENT: 3653 return (zfs_error_fmt(hdl, EZFS_NOHISTORY, 3654 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3655 "'%s'"), zhp->zpool_name)); 3656 case ENOTSUP: 3657 return (zfs_error_fmt(hdl, EZFS_BADVERSION, 3658 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3659 "'%s', pool must be upgraded"), zhp->zpool_name)); 3660 default: 3661 return (zpool_standard_error_fmt(hdl, errno, 3662 dgettext(TEXT_DOMAIN, 3663 "cannot get history for '%s'"), zhp->zpool_name)); 3664 } 3665 } 3666 3667 *len = zc.zc_history_len; 3668 *off = zc.zc_history_offset; 3669 3670 return (0); 3671} 3672 3673/* 3674 * Process the buffer of nvlists, unpacking and storing each nvlist record 3675 * into 'records'. 'leftover' is set to the number of bytes that weren't 3676 * processed as there wasn't a complete record. 3677 */ 3678int 3679zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover, 3680 nvlist_t ***records, uint_t *numrecords) 3681{ 3682 uint64_t reclen; 3683 nvlist_t *nv; 3684 int i; 3685 3686 while (bytes_read > sizeof (reclen)) { 3687 3688 /* get length of packed record (stored as little endian) */ 3689 for (i = 0, reclen = 0; i < sizeof (reclen); i++) 3690 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i); 3691 3692 if (bytes_read < sizeof (reclen) + reclen) 3693 break; 3694 3695 /* unpack record */ 3696 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0) 3697 return (ENOMEM); 3698 bytes_read -= sizeof (reclen) + reclen; 3699 buf += sizeof (reclen) + reclen; 3700 3701 /* add record to nvlist array */ 3702 (*numrecords)++; 3703 if (ISP2(*numrecords + 1)) { 3704 *records = realloc(*records, 3705 *numrecords * 2 * sizeof (nvlist_t *)); 3706 } 3707 (*records)[*numrecords - 1] = nv; 3708 } 3709 3710 *leftover = bytes_read; 3711 return (0); 3712} 3713 3714/* from spa_history.c: spa_history_create_obj() */ 3715#define HIS_BUF_LEN_DEF (128 << 10) 3716#define HIS_BUF_LEN_MAX (1 << 30) 3717 3718/* 3719 * Retrieve the command history of a pool. 3720 */ 3721int 3722zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp) 3723{ 3724 char *buf; 3725 uint64_t buflen = HIS_BUF_LEN_DEF; 3726 uint64_t off = 0; 3727 nvlist_t **records = NULL; 3728 uint_t numrecords = 0; 3729 int err, i; 3730 3731 buf = malloc(buflen); 3732 if (buf == NULL) 3733 return (ENOMEM); 3734 do { 3735 uint64_t bytes_read = buflen; 3736 uint64_t leftover; 3737 3738 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0) 3739 break; 3740 3741 /* if nothing else was read in, we're at EOF, just return */ 3742 if (bytes_read == 0) 3743 break; 3744 3745 if ((err = zpool_history_unpack(buf, bytes_read, 3746 &leftover, &records, &numrecords)) != 0) 3747 break; 3748 off -= leftover; 3749 if (leftover == bytes_read) { 3750 /* 3751 * no progress made, because buffer is not big enough 3752 * to hold this record; resize and retry. 3753 */ 3754 buflen *= 2; 3755 free(buf); 3756 buf = NULL; 3757 if ((buflen >= HIS_BUF_LEN_MAX) || 3758 ((buf = malloc(buflen)) == NULL)) { 3759 err = ENOMEM; 3760 break; 3761 } 3762 } 3763 3764 /* CONSTCOND */ 3765 } while (1); 3766 3767 free(buf); 3768 3769 if (!err) { 3770 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0); 3771 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD, 3772 records, numrecords) == 0); 3773 } 3774 for (i = 0; i < numrecords; i++) 3775 nvlist_free(records[i]); 3776 free(records); 3777 3778 return (err); 3779} 3780 3781void 3782zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj, 3783 char *pathname, size_t len) 3784{ 3785 zfs_cmd_t zc = { 0 }; 3786 boolean_t mounted = B_FALSE; 3787 char *mntpnt = NULL; 3788 char dsname[MAXNAMELEN]; 3789 3790 if (dsobj == 0) { 3791 /* special case for the MOS */ 3792 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", obj); 3793 return; 3794 } 3795 3796 /* get the dataset's name */ 3797 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3798 zc.zc_obj = dsobj; 3799 if (ioctl(zhp->zpool_hdl->libzfs_fd, 3800 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) { 3801 /* just write out a path of two object numbers */ 3802 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>", 3803 dsobj, obj); 3804 return; 3805 } 3806 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname)); 3807 3808 /* find out if the dataset is mounted */ 3809 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt); 3810 3811 /* get the corrupted object's path */ 3812 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name)); 3813 zc.zc_obj = obj; 3814 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH, 3815 &zc) == 0) { 3816 if (mounted) { 3817 (void) snprintf(pathname, len, "%s%s", mntpnt, 3818 zc.zc_value); 3819 } else { 3820 (void) snprintf(pathname, len, "%s:%s", 3821 dsname, zc.zc_value); 3822 } 3823 } else { 3824 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, obj); 3825 } 3826 free(mntpnt); 3827} 3828 3829#ifdef illumos 3830/* 3831 * Read the EFI label from the config, if a label does not exist then 3832 * pass back the error to the caller. If the caller has passed a non-NULL 3833 * diskaddr argument then we set it to the starting address of the EFI 3834 * partition. 3835 */ 3836static int 3837read_efi_label(nvlist_t *config, diskaddr_t *sb) 3838{ 3839 char *path; 3840 int fd; 3841 char diskname[MAXPATHLEN]; 3842 int err = -1; 3843 3844 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0) 3845 return (err); 3846 3847 (void) snprintf(diskname, sizeof (diskname), "%s%s", ZFS_RDISK_ROOT, 3848 strrchr(path, '/')); 3849 if ((fd = open(diskname, O_RDONLY|O_NDELAY)) >= 0) { 3850 struct dk_gpt *vtoc; 3851 3852 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) { 3853 if (sb != NULL) 3854 *sb = vtoc->efi_parts[0].p_start; 3855 efi_free(vtoc); 3856 } 3857 (void) close(fd); 3858 } 3859 return (err); 3860} 3861 3862/* 3863 * determine where a partition starts on a disk in the current 3864 * configuration 3865 */ 3866static diskaddr_t 3867find_start_block(nvlist_t *config) 3868{ 3869 nvlist_t **child; 3870 uint_t c, children; 3871 diskaddr_t sb = MAXOFFSET_T; 3872 uint64_t wholedisk; 3873 3874 if (nvlist_lookup_nvlist_array(config, 3875 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) { 3876 if (nvlist_lookup_uint64(config, 3877 ZPOOL_CONFIG_WHOLE_DISK, 3878 &wholedisk) != 0 || !wholedisk) { 3879 return (MAXOFFSET_T); 3880 } 3881 if (read_efi_label(config, &sb) < 0) 3882 sb = MAXOFFSET_T; 3883 return (sb); 3884 } 3885 3886 for (c = 0; c < children; c++) { 3887 sb = find_start_block(child[c]); 3888 if (sb != MAXOFFSET_T) { 3889 return (sb); 3890 } 3891 } 3892 return (MAXOFFSET_T); 3893} 3894#endif /* illumos */ 3895 3896/* 3897 * Label an individual disk. The name provided is the short name, 3898 * stripped of any leading /dev path. 3899 */ 3900int 3901zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name) 3902{ 3903#ifdef illumos 3904 char path[MAXPATHLEN]; 3905 struct dk_gpt *vtoc; 3906 int fd; 3907 size_t resv = EFI_MIN_RESV_SIZE; 3908 uint64_t slice_size; 3909 diskaddr_t start_block; 3910 char errbuf[1024]; 3911 3912 /* prepare an error message just in case */ 3913 (void) snprintf(errbuf, sizeof (errbuf), 3914 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name); 3915 3916 if (zhp) { 3917 nvlist_t *nvroot; 3918 3919 verify(nvlist_lookup_nvlist(zhp->zpool_config, 3920 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 3921 3922 if (zhp->zpool_start_block == 0) 3923 start_block = find_start_block(nvroot); 3924 else 3925 start_block = zhp->zpool_start_block; 3926 zhp->zpool_start_block = start_block; 3927 } else { 3928 /* new pool */ 3929 start_block = NEW_START_BLOCK; 3930 } 3931 3932 (void) snprintf(path, sizeof (path), "%s/%s%s", ZFS_RDISK_ROOT, name, 3933 BACKUP_SLICE); 3934 3935 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 3936 /* 3937 * This shouldn't happen. We've long since verified that this 3938 * is a valid device. 3939 */ 3940 zfs_error_aux(hdl, 3941 dgettext(TEXT_DOMAIN, "unable to open device")); 3942 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 3943 } 3944 3945 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) { 3946 /* 3947 * The only way this can fail is if we run out of memory, or we 3948 * were unable to read the disk's capacity 3949 */ 3950 if (errno == ENOMEM) 3951 (void) no_memory(hdl); 3952 3953 (void) close(fd); 3954 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3955 "unable to read disk capacity"), name); 3956 3957 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 3958 } 3959 3960 slice_size = vtoc->efi_last_u_lba + 1; 3961 slice_size -= EFI_MIN_RESV_SIZE; 3962 if (start_block == MAXOFFSET_T) 3963 start_block = NEW_START_BLOCK; 3964 slice_size -= start_block; 3965 3966 vtoc->efi_parts[0].p_start = start_block; 3967 vtoc->efi_parts[0].p_size = slice_size; 3968 3969 /* 3970 * Why we use V_USR: V_BACKUP confuses users, and is considered 3971 * disposable by some EFI utilities (since EFI doesn't have a backup 3972 * slice). V_UNASSIGNED is supposed to be used only for zero size 3973 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT, 3974 * etc. were all pretty specific. V_USR is as close to reality as we 3975 * can get, in the absence of V_OTHER. 3976 */ 3977 vtoc->efi_parts[0].p_tag = V_USR; 3978 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs"); 3979 3980 vtoc->efi_parts[8].p_start = slice_size + start_block; 3981 vtoc->efi_parts[8].p_size = resv; 3982 vtoc->efi_parts[8].p_tag = V_RESERVED; 3983 3984 if (efi_write(fd, vtoc) != 0) { 3985 /* 3986 * Some block drivers (like pcata) may not support EFI 3987 * GPT labels. Print out a helpful error message dir- 3988 * ecting the user to manually label the disk and give 3989 * a specific slice. 3990 */ 3991 (void) close(fd); 3992 efi_free(vtoc); 3993 3994 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3995 "try using fdisk(1M) and then provide a specific slice")); 3996 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf)); 3997 } 3998 3999 (void) close(fd); 4000 efi_free(vtoc); 4001#endif /* illumos */ 4002 return (0); 4003} 4004 4005static boolean_t 4006supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf) 4007{ 4008 char *type; 4009 nvlist_t **child; 4010 uint_t children, c; 4011 4012 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_TYPE, &type) == 0); 4013 if (strcmp(type, VDEV_TYPE_FILE) == 0 || 4014 strcmp(type, VDEV_TYPE_HOLE) == 0 || 4015 strcmp(type, VDEV_TYPE_MISSING) == 0) { 4016 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4017 "vdev type '%s' is not supported"), type); 4018 (void) zfs_error(hdl, EZFS_VDEVNOTSUP, errbuf); 4019 return (B_FALSE); 4020 } 4021 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN, 4022 &child, &children) == 0) { 4023 for (c = 0; c < children; c++) { 4024 if (!supported_dump_vdev_type(hdl, child[c], errbuf)) 4025 return (B_FALSE); 4026 } 4027 } 4028 return (B_TRUE); 4029} 4030 4031/* 4032 * Check if this zvol is allowable for use as a dump device; zero if 4033 * it is, > 0 if it isn't, < 0 if it isn't a zvol. 4034 * 4035 * Allowable storage configurations include mirrors, all raidz variants, and 4036 * pools with log, cache, and spare devices. Pools which are backed by files or 4037 * have missing/hole vdevs are not suitable. 4038 */ 4039int 4040zvol_check_dump_config(char *arg) 4041{ 4042 zpool_handle_t *zhp = NULL; 4043 nvlist_t *config, *nvroot; 4044 char *p, *volname; 4045 nvlist_t **top; 4046 uint_t toplevels; 4047 libzfs_handle_t *hdl; 4048 char errbuf[1024]; 4049 char poolname[ZPOOL_MAXNAMELEN]; 4050 int pathlen = strlen(ZVOL_FULL_DEV_DIR); 4051 int ret = 1; 4052 4053 if (strncmp(arg, ZVOL_FULL_DEV_DIR, pathlen)) { 4054 return (-1); 4055 } 4056 4057 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4058 "dump is not supported on device '%s'"), arg); 4059 4060 if ((hdl = libzfs_init()) == NULL) 4061 return (1); 4062 libzfs_print_on_error(hdl, B_TRUE); 4063 4064 volname = arg + pathlen; 4065 4066 /* check the configuration of the pool */ 4067 if ((p = strchr(volname, '/')) == NULL) { 4068 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4069 "malformed dataset name")); 4070 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 4071 return (1); 4072 } else if (p - volname >= ZFS_MAXNAMELEN) { 4073 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4074 "dataset name is too long")); 4075 (void) zfs_error(hdl, EZFS_NAMETOOLONG, errbuf); 4076 return (1); 4077 } else { 4078 (void) strncpy(poolname, volname, p - volname); 4079 poolname[p - volname] = '\0'; 4080 } 4081 4082 if ((zhp = zpool_open(hdl, poolname)) == NULL) { 4083 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4084 "could not open pool '%s'"), poolname); 4085 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 4086 goto out; 4087 } 4088 config = zpool_get_config(zhp, NULL); 4089 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 4090 &nvroot) != 0) { 4091 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4092 "could not obtain vdev configuration for '%s'"), poolname); 4093 (void) zfs_error(hdl, EZFS_INVALCONFIG, errbuf); 4094 goto out; 4095 } 4096 4097 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 4098 &top, &toplevels) == 0); 4099 4100 if (!supported_dump_vdev_type(hdl, top[0], errbuf)) { 4101 goto out; 4102 } 4103 ret = 0; 4104 4105out: 4106 if (zhp) 4107 zpool_close(zhp); 4108 libzfs_fini(hdl); 4109 return (ret); 4110} 4111