libzfs_pool.c revision 277906
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 2011 Nexenta Systems, Inc. All rights reserved. 25 * Copyright (c) 2011, 2014 by Delphix. All rights reserved. 26 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 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 DISK_ROOT "/dev/dsk" 53#define RDISK_ROOT "/dev/rdsk" 54#define BACKUP_SLICE "s2" 55 56typedef struct prop_flags { 57 int create:1; /* Validate property on creation */ 58 int import:1; /* Validate property on import */ 59} prop_flags_t; 60 61/* 62 * ==================================================================== 63 * zpool property functions 64 * ==================================================================== 65 */ 66 67static int 68zpool_get_all_props(zpool_handle_t *zhp) 69{ 70 zfs_cmd_t zc = { 0 }; 71 libzfs_handle_t *hdl = zhp->zpool_hdl; 72 73 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 74 75 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 76 return (-1); 77 78 while (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) { 79 if (errno == ENOMEM) { 80 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 81 zcmd_free_nvlists(&zc); 82 return (-1); 83 } 84 } else { 85 zcmd_free_nvlists(&zc); 86 return (-1); 87 } 88 } 89 90 if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zpool_props) != 0) { 91 zcmd_free_nvlists(&zc); 92 return (-1); 93 } 94 95 zcmd_free_nvlists(&zc); 96 97 return (0); 98} 99 100static int 101zpool_props_refresh(zpool_handle_t *zhp) 102{ 103 nvlist_t *old_props; 104 105 old_props = zhp->zpool_props; 106 107 if (zpool_get_all_props(zhp) != 0) 108 return (-1); 109 110 nvlist_free(old_props); 111 return (0); 112} 113 114static char * 115zpool_get_prop_string(zpool_handle_t *zhp, zpool_prop_t prop, 116 zprop_source_t *src) 117{ 118 nvlist_t *nv, *nvl; 119 uint64_t ival; 120 char *value; 121 zprop_source_t source; 122 123 nvl = zhp->zpool_props; 124 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) { 125 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &ival) == 0); 126 source = ival; 127 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 128 } else { 129 source = ZPROP_SRC_DEFAULT; 130 if ((value = (char *)zpool_prop_default_string(prop)) == NULL) 131 value = "-"; 132 } 133 134 if (src) 135 *src = source; 136 137 return (value); 138} 139 140uint64_t 141zpool_get_prop_int(zpool_handle_t *zhp, zpool_prop_t prop, zprop_source_t *src) 142{ 143 nvlist_t *nv, *nvl; 144 uint64_t value; 145 zprop_source_t source; 146 147 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp)) { 148 /* 149 * zpool_get_all_props() has most likely failed because 150 * the pool is faulted, but if all we need is the top level 151 * vdev's guid then get it from the zhp config nvlist. 152 */ 153 if ((prop == ZPOOL_PROP_GUID) && 154 (nvlist_lookup_nvlist(zhp->zpool_config, 155 ZPOOL_CONFIG_VDEV_TREE, &nv) == 0) && 156 (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value) 157 == 0)) { 158 return (value); 159 } 160 return (zpool_prop_default_numeric(prop)); 161 } 162 163 nvl = zhp->zpool_props; 164 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) { 165 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &value) == 0); 166 source = value; 167 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 168 } else { 169 source = ZPROP_SRC_DEFAULT; 170 value = zpool_prop_default_numeric(prop); 171 } 172 173 if (src) 174 *src = source; 175 176 return (value); 177} 178 179/* 180 * Map VDEV STATE to printed strings. 181 */ 182const char * 183zpool_state_to_name(vdev_state_t state, vdev_aux_t aux) 184{ 185 switch (state) { 186 case VDEV_STATE_CLOSED: 187 case VDEV_STATE_OFFLINE: 188 return (gettext("OFFLINE")); 189 case VDEV_STATE_REMOVED: 190 return (gettext("REMOVED")); 191 case VDEV_STATE_CANT_OPEN: 192 if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG) 193 return (gettext("FAULTED")); 194 else if (aux == VDEV_AUX_SPLIT_POOL) 195 return (gettext("SPLIT")); 196 else 197 return (gettext("UNAVAIL")); 198 case VDEV_STATE_FAULTED: 199 return (gettext("FAULTED")); 200 case VDEV_STATE_DEGRADED: 201 return (gettext("DEGRADED")); 202 case VDEV_STATE_HEALTHY: 203 return (gettext("ONLINE")); 204 } 205 206 return (gettext("UNKNOWN")); 207} 208 209/* 210 * Map POOL STATE to printed strings. 211 */ 212const char * 213zpool_pool_state_to_name(pool_state_t state) 214{ 215 switch (state) { 216 case POOL_STATE_ACTIVE: 217 return (gettext("ACTIVE")); 218 case POOL_STATE_EXPORTED: 219 return (gettext("EXPORTED")); 220 case POOL_STATE_DESTROYED: 221 return (gettext("DESTROYED")); 222 case POOL_STATE_SPARE: 223 return (gettext("SPARE")); 224 case POOL_STATE_L2CACHE: 225 return (gettext("L2CACHE")); 226 case POOL_STATE_UNINITIALIZED: 227 return (gettext("UNINITIALIZED")); 228 case POOL_STATE_UNAVAIL: 229 return (gettext("UNAVAIL")); 230 case POOL_STATE_POTENTIALLY_ACTIVE: 231 return (gettext("POTENTIALLY_ACTIVE")); 232 } 233 234 return (gettext("UNKNOWN")); 235} 236 237/* 238 * Get a zpool property value for 'prop' and return the value in 239 * a pre-allocated buffer. 240 */ 241int 242zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len, 243 zprop_source_t *srctype, boolean_t literal) 244{ 245 uint64_t intval; 246 const char *strval; 247 zprop_source_t src = ZPROP_SRC_NONE; 248 nvlist_t *nvroot; 249 vdev_stat_t *vs; 250 uint_t vsc; 251 252 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) { 253 switch (prop) { 254 case ZPOOL_PROP_NAME: 255 (void) strlcpy(buf, zpool_get_name(zhp), len); 256 break; 257 258 case ZPOOL_PROP_HEALTH: 259 (void) strlcpy(buf, 260 zpool_pool_state_to_name(POOL_STATE_UNAVAIL), len); 261 break; 262 263 case ZPOOL_PROP_GUID: 264 intval = zpool_get_prop_int(zhp, prop, &src); 265 (void) snprintf(buf, len, "%llu", intval); 266 break; 267 268 case ZPOOL_PROP_ALTROOT: 269 case ZPOOL_PROP_CACHEFILE: 270 case ZPOOL_PROP_COMMENT: 271 if (zhp->zpool_props != NULL || 272 zpool_get_all_props(zhp) == 0) { 273 (void) strlcpy(buf, 274 zpool_get_prop_string(zhp, prop, &src), 275 len); 276 break; 277 } 278 /* FALLTHROUGH */ 279 default: 280 (void) strlcpy(buf, "-", len); 281 break; 282 } 283 284 if (srctype != NULL) 285 *srctype = src; 286 return (0); 287 } 288 289 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) && 290 prop != ZPOOL_PROP_NAME) 291 return (-1); 292 293 switch (zpool_prop_get_type(prop)) { 294 case PROP_TYPE_STRING: 295 (void) strlcpy(buf, zpool_get_prop_string(zhp, prop, &src), 296 len); 297 break; 298 299 case PROP_TYPE_NUMBER: 300 intval = zpool_get_prop_int(zhp, prop, &src); 301 302 switch (prop) { 303 case ZPOOL_PROP_SIZE: 304 case ZPOOL_PROP_ALLOCATED: 305 case ZPOOL_PROP_FREE: 306 case ZPOOL_PROP_FREEING: 307 case ZPOOL_PROP_LEAKED: 308 if (literal) { 309 (void) snprintf(buf, len, "%llu", 310 (u_longlong_t)intval); 311 } else { 312 (void) zfs_nicenum(intval, buf, len); 313 } 314 break; 315 case ZPOOL_PROP_EXPANDSZ: 316 if (intval == 0) { 317 (void) strlcpy(buf, "-", len); 318 } else if (literal) { 319 (void) snprintf(buf, len, "%llu", 320 (u_longlong_t)intval); 321 } else { 322 (void) zfs_nicenum(intval, buf, len); 323 } 324 break; 325 case ZPOOL_PROP_CAPACITY: 326 if (literal) { 327 (void) snprintf(buf, len, "%llu", 328 (u_longlong_t)intval); 329 } else { 330 (void) snprintf(buf, len, "%llu%%", 331 (u_longlong_t)intval); 332 } 333 break; 334 case ZPOOL_PROP_FRAGMENTATION: 335 if (intval == UINT64_MAX) { 336 (void) strlcpy(buf, "-", len); 337 } else { 338 (void) snprintf(buf, len, "%llu%%", 339 (u_longlong_t)intval); 340 } 341 break; 342 case ZPOOL_PROP_DEDUPRATIO: 343 (void) snprintf(buf, len, "%llu.%02llux", 344 (u_longlong_t)(intval / 100), 345 (u_longlong_t)(intval % 100)); 346 break; 347 case ZPOOL_PROP_HEALTH: 348 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 349 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 350 verify(nvlist_lookup_uint64_array(nvroot, 351 ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) 352 == 0); 353 354 (void) strlcpy(buf, zpool_state_to_name(intval, 355 vs->vs_aux), len); 356 break; 357 case ZPOOL_PROP_VERSION: 358 if (intval >= SPA_VERSION_FEATURES) { 359 (void) snprintf(buf, len, "-"); 360 break; 361 } 362 /* FALLTHROUGH */ 363 default: 364 (void) snprintf(buf, len, "%llu", intval); 365 } 366 break; 367 368 case PROP_TYPE_INDEX: 369 intval = zpool_get_prop_int(zhp, prop, &src); 370 if (zpool_prop_index_to_string(prop, intval, &strval) 371 != 0) 372 return (-1); 373 (void) strlcpy(buf, strval, len); 374 break; 375 376 default: 377 abort(); 378 } 379 380 if (srctype) 381 *srctype = src; 382 383 return (0); 384} 385 386/* 387 * Check if the bootfs name has the same pool name as it is set to. 388 * Assuming bootfs is a valid dataset name. 389 */ 390static boolean_t 391bootfs_name_valid(const char *pool, char *bootfs) 392{ 393 int len = strlen(pool); 394 395 if (!zfs_name_valid(bootfs, ZFS_TYPE_FILESYSTEM|ZFS_TYPE_SNAPSHOT)) 396 return (B_FALSE); 397 398 if (strncmp(pool, bootfs, len) == 0 && 399 (bootfs[len] == '/' || bootfs[len] == '\0')) 400 return (B_TRUE); 401 402 return (B_FALSE); 403} 404 405/* 406 * Inspect the configuration to determine if any of the devices contain 407 * an EFI label. 408 */ 409static boolean_t 410pool_uses_efi(nvlist_t *config) 411{ 412#ifdef sun 413 nvlist_t **child; 414 uint_t c, children; 415 416 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN, 417 &child, &children) != 0) 418 return (read_efi_label(config, NULL) >= 0); 419 420 for (c = 0; c < children; c++) { 421 if (pool_uses_efi(child[c])) 422 return (B_TRUE); 423 } 424#endif /* sun */ 425 return (B_FALSE); 426} 427 428boolean_t 429zpool_is_bootable(zpool_handle_t *zhp) 430{ 431 char bootfs[ZPOOL_MAXNAMELEN]; 432 433 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs, 434 sizeof (bootfs), NULL, B_FALSE) == 0 && strncmp(bootfs, "-", 435 sizeof (bootfs)) != 0); 436} 437 438 439/* 440 * Given an nvlist of zpool properties to be set, validate that they are 441 * correct, and parse any numeric properties (index, boolean, etc) if they are 442 * specified as strings. 443 */ 444static nvlist_t * 445zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname, 446 nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf) 447{ 448 nvpair_t *elem; 449 nvlist_t *retprops; 450 zpool_prop_t prop; 451 char *strval; 452 uint64_t intval; 453 char *slash, *check; 454 struct stat64 statbuf; 455 zpool_handle_t *zhp; 456 nvlist_t *nvroot; 457 458 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) { 459 (void) no_memory(hdl); 460 return (NULL); 461 } 462 463 elem = NULL; 464 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 465 const char *propname = nvpair_name(elem); 466 467 prop = zpool_name_to_prop(propname); 468 if (prop == ZPROP_INVAL && zpool_prop_feature(propname)) { 469 int err; 470 char *fname = strchr(propname, '@') + 1; 471 472 err = zfeature_lookup_name(fname, NULL); 473 if (err != 0) { 474 ASSERT3U(err, ==, ENOENT); 475 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 476 "invalid feature '%s'"), fname); 477 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 478 goto error; 479 } 480 481 if (nvpair_type(elem) != DATA_TYPE_STRING) { 482 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 483 "'%s' must be a string"), propname); 484 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 485 goto error; 486 } 487 488 (void) nvpair_value_string(elem, &strval); 489 if (strcmp(strval, ZFS_FEATURE_ENABLED) != 0) { 490 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 491 "property '%s' can only be set to " 492 "'enabled'"), propname); 493 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 494 goto error; 495 } 496 497 if (nvlist_add_uint64(retprops, propname, 0) != 0) { 498 (void) no_memory(hdl); 499 goto error; 500 } 501 continue; 502 } 503 504 /* 505 * Make sure this property is valid and applies to this type. 506 */ 507 if (prop == ZPROP_INVAL) { 508 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 509 "invalid property '%s'"), propname); 510 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 511 goto error; 512 } 513 514 if (zpool_prop_readonly(prop)) { 515 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 516 "is readonly"), propname); 517 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 518 goto error; 519 } 520 521 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops, 522 &strval, &intval, errbuf) != 0) 523 goto error; 524 525 /* 526 * Perform additional checking for specific properties. 527 */ 528 switch (prop) { 529 case ZPOOL_PROP_VERSION: 530 if (intval < version || 531 !SPA_VERSION_IS_SUPPORTED(intval)) { 532 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 533 "property '%s' number %d is invalid."), 534 propname, intval); 535 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 536 goto error; 537 } 538 break; 539 540 case ZPOOL_PROP_BOOTFS: 541 if (flags.create || flags.import) { 542 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 543 "property '%s' cannot be set at creation " 544 "or import time"), propname); 545 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 546 goto error; 547 } 548 549 if (version < SPA_VERSION_BOOTFS) { 550 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 551 "pool must be upgraded to support " 552 "'%s' property"), propname); 553 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 554 goto error; 555 } 556 557 /* 558 * bootfs property value has to be a dataset name and 559 * the dataset has to be in the same pool as it sets to. 560 */ 561 if (strval[0] != '\0' && !bootfs_name_valid(poolname, 562 strval)) { 563 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 564 "is an invalid name"), strval); 565 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 566 goto error; 567 } 568 569 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) { 570 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 571 "could not open pool '%s'"), poolname); 572 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 573 goto error; 574 } 575 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 576 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 577 578#ifdef sun 579 /* 580 * bootfs property cannot be set on a disk which has 581 * been EFI labeled. 582 */ 583 if (pool_uses_efi(nvroot)) { 584 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 585 "property '%s' not supported on " 586 "EFI labeled devices"), propname); 587 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf); 588 zpool_close(zhp); 589 goto error; 590 } 591#endif /* sun */ 592 zpool_close(zhp); 593 break; 594 595 case ZPOOL_PROP_ALTROOT: 596 if (!flags.create && !flags.import) { 597 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 598 "property '%s' can only be set during pool " 599 "creation or import"), propname); 600 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 601 goto error; 602 } 603 604 if (strval[0] != '/') { 605 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 606 "bad alternate root '%s'"), strval); 607 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 608 goto error; 609 } 610 break; 611 612 case ZPOOL_PROP_CACHEFILE: 613 if (strval[0] == '\0') 614 break; 615 616 if (strcmp(strval, "none") == 0) 617 break; 618 619 if (strval[0] != '/') { 620 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 621 "property '%s' must be empty, an " 622 "absolute path, or 'none'"), propname); 623 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 624 goto error; 625 } 626 627 slash = strrchr(strval, '/'); 628 629 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || 630 strcmp(slash, "/..") == 0) { 631 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 632 "'%s' is not a valid file"), strval); 633 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 634 goto error; 635 } 636 637 *slash = '\0'; 638 639 if (strval[0] != '\0' && 640 (stat64(strval, &statbuf) != 0 || 641 !S_ISDIR(statbuf.st_mode))) { 642 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 643 "'%s' is not a valid directory"), 644 strval); 645 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 646 goto error; 647 } 648 649 *slash = '/'; 650 break; 651 652 case ZPOOL_PROP_COMMENT: 653 for (check = strval; *check != '\0'; check++) { 654 if (!isprint(*check)) { 655 zfs_error_aux(hdl, 656 dgettext(TEXT_DOMAIN, 657 "comment may only have printable " 658 "characters")); 659 (void) zfs_error(hdl, EZFS_BADPROP, 660 errbuf); 661 goto error; 662 } 663 } 664 if (strlen(strval) > ZPROP_MAX_COMMENT) { 665 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 666 "comment must not exceed %d characters"), 667 ZPROP_MAX_COMMENT); 668 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 669 goto error; 670 } 671 break; 672 case ZPOOL_PROP_READONLY: 673 if (!flags.import) { 674 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 675 "property '%s' can only be set at " 676 "import time"), propname); 677 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 678 goto error; 679 } 680 break; 681 } 682 } 683 684 return (retprops); 685error: 686 nvlist_free(retprops); 687 return (NULL); 688} 689 690/* 691 * Set zpool property : propname=propval. 692 */ 693int 694zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval) 695{ 696 zfs_cmd_t zc = { 0 }; 697 int ret = -1; 698 char errbuf[1024]; 699 nvlist_t *nvl = NULL; 700 nvlist_t *realprops; 701 uint64_t version; 702 prop_flags_t flags = { 0 }; 703 704 (void) snprintf(errbuf, sizeof (errbuf), 705 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 706 zhp->zpool_name); 707 708 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 709 return (no_memory(zhp->zpool_hdl)); 710 711 if (nvlist_add_string(nvl, propname, propval) != 0) { 712 nvlist_free(nvl); 713 return (no_memory(zhp->zpool_hdl)); 714 } 715 716 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 717 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl, 718 zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) { 719 nvlist_free(nvl); 720 return (-1); 721 } 722 723 nvlist_free(nvl); 724 nvl = realprops; 725 726 /* 727 * Execute the corresponding ioctl() to set this property. 728 */ 729 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 730 731 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) { 732 nvlist_free(nvl); 733 return (-1); 734 } 735 736 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc); 737 738 zcmd_free_nvlists(&zc); 739 nvlist_free(nvl); 740 741 if (ret) 742 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf); 743 else 744 (void) zpool_props_refresh(zhp); 745 746 return (ret); 747} 748 749int 750zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp) 751{ 752 libzfs_handle_t *hdl = zhp->zpool_hdl; 753 zprop_list_t *entry; 754 char buf[ZFS_MAXPROPLEN]; 755 nvlist_t *features = NULL; 756 zprop_list_t **last; 757 boolean_t firstexpand = (NULL == *plp); 758 759 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0) 760 return (-1); 761 762 last = plp; 763 while (*last != NULL) 764 last = &(*last)->pl_next; 765 766 if ((*plp)->pl_all) 767 features = zpool_get_features(zhp); 768 769 if ((*plp)->pl_all && firstexpand) { 770 for (int i = 0; i < SPA_FEATURES; i++) { 771 zprop_list_t *entry = zfs_alloc(hdl, 772 sizeof (zprop_list_t)); 773 entry->pl_prop = ZPROP_INVAL; 774 entry->pl_user_prop = zfs_asprintf(hdl, "feature@%s", 775 spa_feature_table[i].fi_uname); 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 } 783 784 /* add any unsupported features */ 785 for (nvpair_t *nvp = nvlist_next_nvpair(features, NULL); 786 nvp != NULL; nvp = nvlist_next_nvpair(features, nvp)) { 787 char *propname; 788 boolean_t found; 789 zprop_list_t *entry; 790 791 if (zfeature_is_supported(nvpair_name(nvp))) 792 continue; 793 794 propname = zfs_asprintf(hdl, "unsupported@%s", 795 nvpair_name(nvp)); 796 797 /* 798 * Before adding the property to the list make sure that no 799 * other pool already added the same property. 800 */ 801 found = B_FALSE; 802 entry = *plp; 803 while (entry != NULL) { 804 if (entry->pl_user_prop != NULL && 805 strcmp(propname, entry->pl_user_prop) == 0) { 806 found = B_TRUE; 807 break; 808 } 809 entry = entry->pl_next; 810 } 811 if (found) { 812 free(propname); 813 continue; 814 } 815 816 entry = zfs_alloc(hdl, sizeof (zprop_list_t)); 817 entry->pl_prop = ZPROP_INVAL; 818 entry->pl_user_prop = propname; 819 entry->pl_width = strlen(entry->pl_user_prop); 820 entry->pl_all = B_TRUE; 821 822 *last = entry; 823 last = &entry->pl_next; 824 } 825 826 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 827 828 if (entry->pl_fixed) 829 continue; 830 831 if (entry->pl_prop != ZPROP_INVAL && 832 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf), 833 NULL, B_FALSE) == 0) { 834 if (strlen(buf) > entry->pl_width) 835 entry->pl_width = strlen(buf); 836 } 837 } 838 839 return (0); 840} 841 842/* 843 * Get the state for the given feature on the given ZFS pool. 844 */ 845int 846zpool_prop_get_feature(zpool_handle_t *zhp, const char *propname, char *buf, 847 size_t len) 848{ 849 uint64_t refcount; 850 boolean_t found = B_FALSE; 851 nvlist_t *features = zpool_get_features(zhp); 852 boolean_t supported; 853 const char *feature = strchr(propname, '@') + 1; 854 855 supported = zpool_prop_feature(propname); 856 ASSERT(supported || zpool_prop_unsupported(propname)); 857 858 /* 859 * Convert from feature name to feature guid. This conversion is 860 * unecessary for unsupported@... properties because they already 861 * use guids. 862 */ 863 if (supported) { 864 int ret; 865 spa_feature_t fid; 866 867 ret = zfeature_lookup_name(feature, &fid); 868 if (ret != 0) { 869 (void) strlcpy(buf, "-", len); 870 return (ENOTSUP); 871 } 872 feature = spa_feature_table[fid].fi_guid; 873 } 874 875 if (nvlist_lookup_uint64(features, feature, &refcount) == 0) 876 found = B_TRUE; 877 878 if (supported) { 879 if (!found) { 880 (void) strlcpy(buf, ZFS_FEATURE_DISABLED, len); 881 } else { 882 if (refcount == 0) 883 (void) strlcpy(buf, ZFS_FEATURE_ENABLED, len); 884 else 885 (void) strlcpy(buf, ZFS_FEATURE_ACTIVE, len); 886 } 887 } else { 888 if (found) { 889 if (refcount == 0) { 890 (void) strcpy(buf, ZFS_UNSUPPORTED_INACTIVE); 891 } else { 892 (void) strcpy(buf, ZFS_UNSUPPORTED_READONLY); 893 } 894 } else { 895 (void) strlcpy(buf, "-", len); 896 return (ENOTSUP); 897 } 898 } 899 900 return (0); 901} 902 903/* 904 * Don't start the slice at the default block of 34; many storage 905 * devices will use a stripe width of 128k, so start there instead. 906 */ 907#define NEW_START_BLOCK 256 908 909/* 910 * Validate the given pool name, optionally putting an extended error message in 911 * 'buf'. 912 */ 913boolean_t 914zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool) 915{ 916 namecheck_err_t why; 917 char what; 918 int ret; 919 920 ret = pool_namecheck(pool, &why, &what); 921 922 /* 923 * The rules for reserved pool names were extended at a later point. 924 * But we need to support users with existing pools that may now be 925 * invalid. So we only check for this expanded set of names during a 926 * create (or import), and only in userland. 927 */ 928 if (ret == 0 && !isopen && 929 (strncmp(pool, "mirror", 6) == 0 || 930 strncmp(pool, "raidz", 5) == 0 || 931 strncmp(pool, "spare", 5) == 0 || 932 strcmp(pool, "log") == 0)) { 933 if (hdl != NULL) 934 zfs_error_aux(hdl, 935 dgettext(TEXT_DOMAIN, "name is reserved")); 936 return (B_FALSE); 937 } 938 939 940 if (ret != 0) { 941 if (hdl != NULL) { 942 switch (why) { 943 case NAME_ERR_TOOLONG: 944 zfs_error_aux(hdl, 945 dgettext(TEXT_DOMAIN, "name is too long")); 946 break; 947 948 case NAME_ERR_INVALCHAR: 949 zfs_error_aux(hdl, 950 dgettext(TEXT_DOMAIN, "invalid character " 951 "'%c' in pool name"), what); 952 break; 953 954 case NAME_ERR_NOLETTER: 955 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 956 "name must begin with a letter")); 957 break; 958 959 case NAME_ERR_RESERVED: 960 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 961 "name is reserved")); 962 break; 963 964 case NAME_ERR_DISKLIKE: 965 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 966 "pool name is reserved")); 967 break; 968 969 case NAME_ERR_LEADING_SLASH: 970 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 971 "leading slash in name")); 972 break; 973 974 case NAME_ERR_EMPTY_COMPONENT: 975 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 976 "empty component in name")); 977 break; 978 979 case NAME_ERR_TRAILING_SLASH: 980 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 981 "trailing slash in name")); 982 break; 983 984 case NAME_ERR_MULTIPLE_AT: 985 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 986 "multiple '@' delimiters in name")); 987 break; 988 989 } 990 } 991 return (B_FALSE); 992 } 993 994 return (B_TRUE); 995} 996 997/* 998 * Open a handle to the given pool, even if the pool is currently in the FAULTED 999 * state. 1000 */ 1001zpool_handle_t * 1002zpool_open_canfail(libzfs_handle_t *hdl, const char *pool) 1003{ 1004 zpool_handle_t *zhp; 1005 boolean_t missing; 1006 1007 /* 1008 * Make sure the pool name is valid. 1009 */ 1010 if (!zpool_name_valid(hdl, B_TRUE, pool)) { 1011 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME, 1012 dgettext(TEXT_DOMAIN, "cannot open '%s'"), 1013 pool); 1014 return (NULL); 1015 } 1016 1017 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 1018 return (NULL); 1019 1020 zhp->zpool_hdl = hdl; 1021 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 1022 1023 if (zpool_refresh_stats(zhp, &missing) != 0) { 1024 zpool_close(zhp); 1025 return (NULL); 1026 } 1027 1028 if (missing) { 1029 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool")); 1030 (void) zfs_error_fmt(hdl, EZFS_NOENT, 1031 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool); 1032 zpool_close(zhp); 1033 return (NULL); 1034 } 1035 1036 return (zhp); 1037} 1038 1039/* 1040 * Like the above, but silent on error. Used when iterating over pools (because 1041 * the configuration cache may be out of date). 1042 */ 1043int 1044zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret) 1045{ 1046 zpool_handle_t *zhp; 1047 boolean_t missing; 1048 1049 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 1050 return (-1); 1051 1052 zhp->zpool_hdl = hdl; 1053 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 1054 1055 if (zpool_refresh_stats(zhp, &missing) != 0) { 1056 zpool_close(zhp); 1057 return (-1); 1058 } 1059 1060 if (missing) { 1061 zpool_close(zhp); 1062 *ret = NULL; 1063 return (0); 1064 } 1065 1066 *ret = zhp; 1067 return (0); 1068} 1069 1070/* 1071 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted 1072 * state. 1073 */ 1074zpool_handle_t * 1075zpool_open(libzfs_handle_t *hdl, const char *pool) 1076{ 1077 zpool_handle_t *zhp; 1078 1079 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL) 1080 return (NULL); 1081 1082 if (zhp->zpool_state == POOL_STATE_UNAVAIL) { 1083 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL, 1084 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name); 1085 zpool_close(zhp); 1086 return (NULL); 1087 } 1088 1089 return (zhp); 1090} 1091 1092/* 1093 * Close the handle. Simply frees the memory associated with the handle. 1094 */ 1095void 1096zpool_close(zpool_handle_t *zhp) 1097{ 1098 if (zhp->zpool_config) 1099 nvlist_free(zhp->zpool_config); 1100 if (zhp->zpool_old_config) 1101 nvlist_free(zhp->zpool_old_config); 1102 if (zhp->zpool_props) 1103 nvlist_free(zhp->zpool_props); 1104 free(zhp); 1105} 1106 1107/* 1108 * Return the name of the pool. 1109 */ 1110const char * 1111zpool_get_name(zpool_handle_t *zhp) 1112{ 1113 return (zhp->zpool_name); 1114} 1115 1116 1117/* 1118 * Return the state of the pool (ACTIVE or UNAVAILABLE) 1119 */ 1120int 1121zpool_get_state(zpool_handle_t *zhp) 1122{ 1123 return (zhp->zpool_state); 1124} 1125 1126/* 1127 * Create the named pool, using the provided vdev list. It is assumed 1128 * that the consumer has already validated the contents of the nvlist, so we 1129 * don't have to worry about error semantics. 1130 */ 1131int 1132zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot, 1133 nvlist_t *props, nvlist_t *fsprops) 1134{ 1135 zfs_cmd_t zc = { 0 }; 1136 nvlist_t *zc_fsprops = NULL; 1137 nvlist_t *zc_props = NULL; 1138 char msg[1024]; 1139 int ret = -1; 1140 1141 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1142 "cannot create '%s'"), pool); 1143 1144 if (!zpool_name_valid(hdl, B_FALSE, pool)) 1145 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 1146 1147 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1148 return (-1); 1149 1150 if (props) { 1151 prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE }; 1152 1153 if ((zc_props = zpool_valid_proplist(hdl, pool, props, 1154 SPA_VERSION_1, flags, msg)) == NULL) { 1155 goto create_failed; 1156 } 1157 } 1158 1159 if (fsprops) { 1160 uint64_t zoned; 1161 char *zonestr; 1162 1163 zoned = ((nvlist_lookup_string(fsprops, 1164 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) && 1165 strcmp(zonestr, "on") == 0); 1166 1167 if ((zc_fsprops = zfs_valid_proplist(hdl, 1168 ZFS_TYPE_FILESYSTEM, fsprops, zoned, NULL, msg)) == NULL) { 1169 goto create_failed; 1170 } 1171 if (!zc_props && 1172 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) { 1173 goto create_failed; 1174 } 1175 if (nvlist_add_nvlist(zc_props, 1176 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) { 1177 goto create_failed; 1178 } 1179 } 1180 1181 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 1182 goto create_failed; 1183 1184 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name)); 1185 1186 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) { 1187 1188 zcmd_free_nvlists(&zc); 1189 nvlist_free(zc_props); 1190 nvlist_free(zc_fsprops); 1191 1192 switch (errno) { 1193 case EBUSY: 1194 /* 1195 * This can happen if the user has specified the same 1196 * device multiple times. We can't reliably detect this 1197 * until we try to add it and see we already have a 1198 * label. 1199 */ 1200 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1201 "one or more vdevs refer to the same device")); 1202 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1203 1204 case EOVERFLOW: 1205 /* 1206 * This occurs when one of the devices is below 1207 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1208 * device was the problem device since there's no 1209 * reliable way to determine device size from userland. 1210 */ 1211 { 1212 char buf[64]; 1213 1214 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1215 1216 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1217 "one or more devices is less than the " 1218 "minimum size (%s)"), buf); 1219 } 1220 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1221 1222 case ENOSPC: 1223 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1224 "one or more devices is out of space")); 1225 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1226 1227 case ENOTBLK: 1228 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1229 "cache device must be a disk or disk slice")); 1230 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1231 1232 default: 1233 return (zpool_standard_error(hdl, errno, msg)); 1234 } 1235 } 1236 1237create_failed: 1238 zcmd_free_nvlists(&zc); 1239 nvlist_free(zc_props); 1240 nvlist_free(zc_fsprops); 1241 return (ret); 1242} 1243 1244/* 1245 * Destroy the given pool. It is up to the caller to ensure that there are no 1246 * datasets left in the pool. 1247 */ 1248int 1249zpool_destroy(zpool_handle_t *zhp, const char *log_str) 1250{ 1251 zfs_cmd_t zc = { 0 }; 1252 zfs_handle_t *zfp = NULL; 1253 libzfs_handle_t *hdl = zhp->zpool_hdl; 1254 char msg[1024]; 1255 1256 if (zhp->zpool_state == POOL_STATE_ACTIVE && 1257 (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL) 1258 return (-1); 1259 1260 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1261 zc.zc_history = (uint64_t)(uintptr_t)log_str; 1262 1263 if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) { 1264 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1265 "cannot destroy '%s'"), zhp->zpool_name); 1266 1267 if (errno == EROFS) { 1268 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1269 "one or more devices is read only")); 1270 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1271 } else { 1272 (void) zpool_standard_error(hdl, errno, msg); 1273 } 1274 1275 if (zfp) 1276 zfs_close(zfp); 1277 return (-1); 1278 } 1279 1280 if (zfp) { 1281 remove_mountpoint(zfp); 1282 zfs_close(zfp); 1283 } 1284 1285 return (0); 1286} 1287 1288/* 1289 * Add the given vdevs to the pool. The caller must have already performed the 1290 * necessary verification to ensure that the vdev specification is well-formed. 1291 */ 1292int 1293zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot) 1294{ 1295 zfs_cmd_t zc = { 0 }; 1296 int ret; 1297 libzfs_handle_t *hdl = zhp->zpool_hdl; 1298 char msg[1024]; 1299 nvlist_t **spares, **l2cache; 1300 uint_t nspares, nl2cache; 1301 1302 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1303 "cannot add to '%s'"), zhp->zpool_name); 1304 1305 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1306 SPA_VERSION_SPARES && 1307 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 1308 &spares, &nspares) == 0) { 1309 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1310 "upgraded to add hot spares")); 1311 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1312 } 1313 1314 if (zpool_is_bootable(zhp) && nvlist_lookup_nvlist_array(nvroot, 1315 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0) { 1316 uint64_t s; 1317 1318 for (s = 0; s < nspares; s++) { 1319 char *path; 1320 1321 if (nvlist_lookup_string(spares[s], ZPOOL_CONFIG_PATH, 1322 &path) == 0 && pool_uses_efi(spares[s])) { 1323 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1324 "device '%s' contains an EFI label and " 1325 "cannot be used on root pools."), 1326 zpool_vdev_name(hdl, NULL, spares[s], 1327 B_FALSE)); 1328 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg)); 1329 } 1330 } 1331 } 1332 1333 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1334 SPA_VERSION_L2CACHE && 1335 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, 1336 &l2cache, &nl2cache) == 0) { 1337 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1338 "upgraded to add cache devices")); 1339 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1340 } 1341 1342 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1343 return (-1); 1344 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1345 1346 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) { 1347 switch (errno) { 1348 case EBUSY: 1349 /* 1350 * This can happen if the user has specified the same 1351 * device multiple times. We can't reliably detect this 1352 * until we try to add it and see we already have a 1353 * label. 1354 */ 1355 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1356 "one or more vdevs refer to the same device")); 1357 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1358 break; 1359 1360 case EOVERFLOW: 1361 /* 1362 * This occurrs when one of the devices is below 1363 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1364 * device was the problem device since there's no 1365 * reliable way to determine device size from userland. 1366 */ 1367 { 1368 char buf[64]; 1369 1370 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1371 1372 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1373 "device is less than the minimum " 1374 "size (%s)"), buf); 1375 } 1376 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1377 break; 1378 1379 case ENOTSUP: 1380 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1381 "pool must be upgraded to add these vdevs")); 1382 (void) zfs_error(hdl, EZFS_BADVERSION, msg); 1383 break; 1384 1385 case EDOM: 1386 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1387 "root pool can not have multiple vdevs" 1388 " or separate logs")); 1389 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, msg); 1390 break; 1391 1392 case ENOTBLK: 1393 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1394 "cache device must be a disk or disk slice")); 1395 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1396 break; 1397 1398 default: 1399 (void) zpool_standard_error(hdl, errno, msg); 1400 } 1401 1402 ret = -1; 1403 } else { 1404 ret = 0; 1405 } 1406 1407 zcmd_free_nvlists(&zc); 1408 1409 return (ret); 1410} 1411 1412/* 1413 * Exports the pool from the system. The caller must ensure that there are no 1414 * mounted datasets in the pool. 1415 */ 1416static int 1417zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce, 1418 const char *log_str) 1419{ 1420 zfs_cmd_t zc = { 0 }; 1421 char msg[1024]; 1422 1423 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1424 "cannot export '%s'"), zhp->zpool_name); 1425 1426 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1427 zc.zc_cookie = force; 1428 zc.zc_guid = hardforce; 1429 zc.zc_history = (uint64_t)(uintptr_t)log_str; 1430 1431 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) { 1432 switch (errno) { 1433 case EXDEV: 1434 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN, 1435 "use '-f' to override the following errors:\n" 1436 "'%s' has an active shared spare which could be" 1437 " used by other pools once '%s' is exported."), 1438 zhp->zpool_name, zhp->zpool_name); 1439 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE, 1440 msg)); 1441 default: 1442 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno, 1443 msg)); 1444 } 1445 } 1446 1447 return (0); 1448} 1449 1450int 1451zpool_export(zpool_handle_t *zhp, boolean_t force, const char *log_str) 1452{ 1453 return (zpool_export_common(zhp, force, B_FALSE, log_str)); 1454} 1455 1456int 1457zpool_export_force(zpool_handle_t *zhp, const char *log_str) 1458{ 1459 return (zpool_export_common(zhp, B_TRUE, B_TRUE, log_str)); 1460} 1461 1462static void 1463zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun, 1464 nvlist_t *config) 1465{ 1466 nvlist_t *nv = NULL; 1467 uint64_t rewindto; 1468 int64_t loss = -1; 1469 struct tm t; 1470 char timestr[128]; 1471 1472 if (!hdl->libzfs_printerr || config == NULL) 1473 return; 1474 1475 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 || 1476 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0) { 1477 return; 1478 } 1479 1480 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1481 return; 1482 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss); 1483 1484 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1485 strftime(timestr, 128, 0, &t) != 0) { 1486 if (dryrun) { 1487 (void) printf(dgettext(TEXT_DOMAIN, 1488 "Would be able to return %s " 1489 "to its state as of %s.\n"), 1490 name, timestr); 1491 } else { 1492 (void) printf(dgettext(TEXT_DOMAIN, 1493 "Pool %s returned to its state as of %s.\n"), 1494 name, timestr); 1495 } 1496 if (loss > 120) { 1497 (void) printf(dgettext(TEXT_DOMAIN, 1498 "%s approximately %lld "), 1499 dryrun ? "Would discard" : "Discarded", 1500 (loss + 30) / 60); 1501 (void) printf(dgettext(TEXT_DOMAIN, 1502 "minutes of transactions.\n")); 1503 } else if (loss > 0) { 1504 (void) printf(dgettext(TEXT_DOMAIN, 1505 "%s approximately %lld "), 1506 dryrun ? "Would discard" : "Discarded", loss); 1507 (void) printf(dgettext(TEXT_DOMAIN, 1508 "seconds of transactions.\n")); 1509 } 1510 } 1511} 1512 1513void 1514zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason, 1515 nvlist_t *config) 1516{ 1517 nvlist_t *nv = NULL; 1518 int64_t loss = -1; 1519 uint64_t edata = UINT64_MAX; 1520 uint64_t rewindto; 1521 struct tm t; 1522 char timestr[128]; 1523 1524 if (!hdl->libzfs_printerr) 1525 return; 1526 1527 if (reason >= 0) 1528 (void) printf(dgettext(TEXT_DOMAIN, "action: ")); 1529 else 1530 (void) printf(dgettext(TEXT_DOMAIN, "\t")); 1531 1532 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */ 1533 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 || 1534 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0 || 1535 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1536 goto no_info; 1537 1538 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss); 1539 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS, 1540 &edata); 1541 1542 (void) printf(dgettext(TEXT_DOMAIN, 1543 "Recovery is possible, but will result in some data loss.\n")); 1544 1545 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1546 strftime(timestr, 128, 0, &t) != 0) { 1547 (void) printf(dgettext(TEXT_DOMAIN, 1548 "\tReturning the pool to its state as of %s\n" 1549 "\tshould correct the problem. "), 1550 timestr); 1551 } else { 1552 (void) printf(dgettext(TEXT_DOMAIN, 1553 "\tReverting the pool to an earlier state " 1554 "should correct the problem.\n\t")); 1555 } 1556 1557 if (loss > 120) { 1558 (void) printf(dgettext(TEXT_DOMAIN, 1559 "Approximately %lld minutes of data\n" 1560 "\tmust be discarded, irreversibly. "), (loss + 30) / 60); 1561 } else if (loss > 0) { 1562 (void) printf(dgettext(TEXT_DOMAIN, 1563 "Approximately %lld seconds of data\n" 1564 "\tmust be discarded, irreversibly. "), loss); 1565 } 1566 if (edata != 0 && edata != UINT64_MAX) { 1567 if (edata == 1) { 1568 (void) printf(dgettext(TEXT_DOMAIN, 1569 "After rewind, at least\n" 1570 "\tone persistent user-data error will remain. ")); 1571 } else { 1572 (void) printf(dgettext(TEXT_DOMAIN, 1573 "After rewind, several\n" 1574 "\tpersistent user-data errors will remain. ")); 1575 } 1576 } 1577 (void) printf(dgettext(TEXT_DOMAIN, 1578 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "), 1579 reason >= 0 ? "clear" : "import", name); 1580 1581 (void) printf(dgettext(TEXT_DOMAIN, 1582 "A scrub of the pool\n" 1583 "\tis strongly recommended after recovery.\n")); 1584 return; 1585 1586no_info: 1587 (void) printf(dgettext(TEXT_DOMAIN, 1588 "Destroy and re-create the pool from\n\ta backup source.\n")); 1589} 1590 1591/* 1592 * zpool_import() is a contracted interface. Should be kept the same 1593 * if possible. 1594 * 1595 * Applications should use zpool_import_props() to import a pool with 1596 * new properties value to be set. 1597 */ 1598int 1599zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1600 char *altroot) 1601{ 1602 nvlist_t *props = NULL; 1603 int ret; 1604 1605 if (altroot != NULL) { 1606 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 1607 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1608 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1609 newname)); 1610 } 1611 1612 if (nvlist_add_string(props, 1613 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 || 1614 nvlist_add_string(props, 1615 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) { 1616 nvlist_free(props); 1617 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1618 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1619 newname)); 1620 } 1621 } 1622 1623 ret = zpool_import_props(hdl, config, newname, props, 1624 ZFS_IMPORT_NORMAL); 1625 if (props) 1626 nvlist_free(props); 1627 return (ret); 1628} 1629 1630static void 1631print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv, 1632 int indent) 1633{ 1634 nvlist_t **child; 1635 uint_t c, children; 1636 char *vname; 1637 uint64_t is_log = 0; 1638 1639 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, 1640 &is_log); 1641 1642 if (name != NULL) 1643 (void) printf("\t%*s%s%s\n", indent, "", name, 1644 is_log ? " [log]" : ""); 1645 1646 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 1647 &child, &children) != 0) 1648 return; 1649 1650 for (c = 0; c < children; c++) { 1651 vname = zpool_vdev_name(hdl, NULL, child[c], B_TRUE); 1652 print_vdev_tree(hdl, vname, child[c], indent + 2); 1653 free(vname); 1654 } 1655} 1656 1657void 1658zpool_print_unsup_feat(nvlist_t *config) 1659{ 1660 nvlist_t *nvinfo, *unsup_feat; 1661 1662 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 1663 0); 1664 verify(nvlist_lookup_nvlist(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT, 1665 &unsup_feat) == 0); 1666 1667 for (nvpair_t *nvp = nvlist_next_nvpair(unsup_feat, NULL); nvp != NULL; 1668 nvp = nvlist_next_nvpair(unsup_feat, nvp)) { 1669 char *desc; 1670 1671 verify(nvpair_type(nvp) == DATA_TYPE_STRING); 1672 verify(nvpair_value_string(nvp, &desc) == 0); 1673 1674 if (strlen(desc) > 0) 1675 (void) printf("\t%s (%s)\n", nvpair_name(nvp), desc); 1676 else 1677 (void) printf("\t%s\n", nvpair_name(nvp)); 1678 } 1679} 1680 1681/* 1682 * Import the given pool using the known configuration and a list of 1683 * properties to be set. The configuration should have come from 1684 * zpool_find_import(). The 'newname' parameters control whether the pool 1685 * is imported with a different name. 1686 */ 1687int 1688zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1689 nvlist_t *props, int flags) 1690{ 1691 zfs_cmd_t zc = { 0 }; 1692 zpool_rewind_policy_t policy; 1693 nvlist_t *nv = NULL; 1694 nvlist_t *nvinfo = NULL; 1695 nvlist_t *missing = NULL; 1696 char *thename; 1697 char *origname; 1698 int ret; 1699 int error = 0; 1700 char errbuf[1024]; 1701 1702 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 1703 &origname) == 0); 1704 1705 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1706 "cannot import pool '%s'"), origname); 1707 1708 if (newname != NULL) { 1709 if (!zpool_name_valid(hdl, B_FALSE, newname)) 1710 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME, 1711 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1712 newname)); 1713 thename = (char *)newname; 1714 } else { 1715 thename = origname; 1716 } 1717 1718 if (props) { 1719 uint64_t version; 1720 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 1721 1722 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, 1723 &version) == 0); 1724 1725 if ((props = zpool_valid_proplist(hdl, origname, 1726 props, version, flags, errbuf)) == NULL) { 1727 return (-1); 1728 } else if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { 1729 nvlist_free(props); 1730 return (-1); 1731 } 1732 } 1733 1734 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name)); 1735 1736 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, 1737 &zc.zc_guid) == 0); 1738 1739 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) { 1740 nvlist_free(props); 1741 return (-1); 1742 } 1743 if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) { 1744 nvlist_free(props); 1745 return (-1); 1746 } 1747 1748 zc.zc_cookie = flags; 1749 while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 && 1750 errno == ENOMEM) { 1751 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 1752 zcmd_free_nvlists(&zc); 1753 return (-1); 1754 } 1755 } 1756 if (ret != 0) 1757 error = errno; 1758 1759 (void) zcmd_read_dst_nvlist(hdl, &zc, &nv); 1760 zpool_get_rewind_policy(config, &policy); 1761 1762 if (error) { 1763 char desc[1024]; 1764 1765 /* 1766 * Dry-run failed, but we print out what success 1767 * looks like if we found a best txg 1768 */ 1769 if (policy.zrp_request & ZPOOL_TRY_REWIND) { 1770 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1771 B_TRUE, nv); 1772 nvlist_free(nv); 1773 return (-1); 1774 } 1775 1776 if (newname == NULL) 1777 (void) snprintf(desc, sizeof (desc), 1778 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1779 thename); 1780 else 1781 (void) snprintf(desc, sizeof (desc), 1782 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"), 1783 origname, thename); 1784 1785 switch (error) { 1786 case ENOTSUP: 1787 if (nv != NULL && nvlist_lookup_nvlist(nv, 1788 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 && 1789 nvlist_exists(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT)) { 1790 (void) printf(dgettext(TEXT_DOMAIN, "This " 1791 "pool uses the following feature(s) not " 1792 "supported by this system:\n")); 1793 zpool_print_unsup_feat(nv); 1794 if (nvlist_exists(nvinfo, 1795 ZPOOL_CONFIG_CAN_RDONLY)) { 1796 (void) printf(dgettext(TEXT_DOMAIN, 1797 "All unsupported features are only " 1798 "required for writing to the pool." 1799 "\nThe pool can be imported using " 1800 "'-o readonly=on'.\n")); 1801 } 1802 } 1803 /* 1804 * Unsupported version. 1805 */ 1806 (void) zfs_error(hdl, EZFS_BADVERSION, desc); 1807 break; 1808 1809 case EINVAL: 1810 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc); 1811 break; 1812 1813 case EROFS: 1814 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1815 "one or more devices is read only")); 1816 (void) zfs_error(hdl, EZFS_BADDEV, desc); 1817 break; 1818 1819 case ENXIO: 1820 if (nv && nvlist_lookup_nvlist(nv, 1821 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 && 1822 nvlist_lookup_nvlist(nvinfo, 1823 ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) { 1824 (void) printf(dgettext(TEXT_DOMAIN, 1825 "The devices below are missing, use " 1826 "'-m' to import the pool anyway:\n")); 1827 print_vdev_tree(hdl, NULL, missing, 2); 1828 (void) printf("\n"); 1829 } 1830 (void) zpool_standard_error(hdl, error, desc); 1831 break; 1832 1833 case EEXIST: 1834 (void) zpool_standard_error(hdl, error, desc); 1835 break; 1836 1837 default: 1838 (void) zpool_standard_error(hdl, error, desc); 1839 zpool_explain_recover(hdl, 1840 newname ? origname : thename, -error, nv); 1841 break; 1842 } 1843 1844 nvlist_free(nv); 1845 ret = -1; 1846 } else { 1847 zpool_handle_t *zhp; 1848 1849 /* 1850 * This should never fail, but play it safe anyway. 1851 */ 1852 if (zpool_open_silent(hdl, thename, &zhp) != 0) 1853 ret = -1; 1854 else if (zhp != NULL) 1855 zpool_close(zhp); 1856 if (policy.zrp_request & 1857 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 1858 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1859 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv); 1860 } 1861 nvlist_free(nv); 1862 return (0); 1863 } 1864 1865 zcmd_free_nvlists(&zc); 1866 nvlist_free(props); 1867 1868 return (ret); 1869} 1870 1871/* 1872 * Scan the pool. 1873 */ 1874int 1875zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func) 1876{ 1877 zfs_cmd_t zc = { 0 }; 1878 char msg[1024]; 1879 libzfs_handle_t *hdl = zhp->zpool_hdl; 1880 1881 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1882 zc.zc_cookie = func; 1883 1884 if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 || 1885 (errno == ENOENT && func != POOL_SCAN_NONE)) 1886 return (0); 1887 1888 if (func == POOL_SCAN_SCRUB) { 1889 (void) snprintf(msg, sizeof (msg), 1890 dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name); 1891 } else if (func == POOL_SCAN_NONE) { 1892 (void) snprintf(msg, sizeof (msg), 1893 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"), 1894 zc.zc_name); 1895 } else { 1896 assert(!"unexpected result"); 1897 } 1898 1899 if (errno == EBUSY) { 1900 nvlist_t *nvroot; 1901 pool_scan_stat_t *ps = NULL; 1902 uint_t psc; 1903 1904 verify(nvlist_lookup_nvlist(zhp->zpool_config, 1905 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 1906 (void) nvlist_lookup_uint64_array(nvroot, 1907 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc); 1908 if (ps && ps->pss_func == POOL_SCAN_SCRUB) 1909 return (zfs_error(hdl, EZFS_SCRUBBING, msg)); 1910 else 1911 return (zfs_error(hdl, EZFS_RESILVERING, msg)); 1912 } else if (errno == ENOENT) { 1913 return (zfs_error(hdl, EZFS_NO_SCRUB, msg)); 1914 } else { 1915 return (zpool_standard_error(hdl, errno, msg)); 1916 } 1917} 1918 1919#ifdef illumos 1920/* 1921 * This provides a very minimal check whether a given string is likely a 1922 * c#t#d# style string. Users of this are expected to do their own 1923 * verification of the s# part. 1924 */ 1925#define CTD_CHECK(str) (str && str[0] == 'c' && isdigit(str[1])) 1926 1927/* 1928 * More elaborate version for ones which may start with "/dev/dsk/" 1929 * and the like. 1930 */ 1931static int 1932ctd_check_path(char *str) { 1933 /* 1934 * If it starts with a slash, check the last component. 1935 */ 1936 if (str && str[0] == '/') { 1937 char *tmp = strrchr(str, '/'); 1938 1939 /* 1940 * If it ends in "/old", check the second-to-last 1941 * component of the string instead. 1942 */ 1943 if (tmp != str && strcmp(tmp, "/old") == 0) { 1944 for (tmp--; *tmp != '/'; tmp--) 1945 ; 1946 } 1947 str = tmp + 1; 1948 } 1949 return (CTD_CHECK(str)); 1950} 1951#endif 1952 1953/* 1954 * Find a vdev that matches the search criteria specified. We use the 1955 * the nvpair name to determine how we should look for the device. 1956 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL 1957 * spare; but FALSE if its an INUSE spare. 1958 */ 1959static nvlist_t * 1960vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare, 1961 boolean_t *l2cache, boolean_t *log) 1962{ 1963 uint_t c, children; 1964 nvlist_t **child; 1965 nvlist_t *ret; 1966 uint64_t is_log; 1967 char *srchkey; 1968 nvpair_t *pair = nvlist_next_nvpair(search, NULL); 1969 1970 /* Nothing to look for */ 1971 if (search == NULL || pair == NULL) 1972 return (NULL); 1973 1974 /* Obtain the key we will use to search */ 1975 srchkey = nvpair_name(pair); 1976 1977 switch (nvpair_type(pair)) { 1978 case DATA_TYPE_UINT64: 1979 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) { 1980 uint64_t srchval, theguid; 1981 1982 verify(nvpair_value_uint64(pair, &srchval) == 0); 1983 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 1984 &theguid) == 0); 1985 if (theguid == srchval) 1986 return (nv); 1987 } 1988 break; 1989 1990 case DATA_TYPE_STRING: { 1991 char *srchval, *val; 1992 1993 verify(nvpair_value_string(pair, &srchval) == 0); 1994 if (nvlist_lookup_string(nv, srchkey, &val) != 0) 1995 break; 1996 1997 /* 1998 * Search for the requested value. Special cases: 1999 * 2000 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in 2001 * "s0" or "s0/old". The "s0" part is hidden from the user, 2002 * but included in the string, so this matches around it. 2003 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE). 2004 * 2005 * Otherwise, all other searches are simple string compares. 2006 */ 2007#ifdef illumos 2008 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 && 2009 ctd_check_path(val)) { 2010 uint64_t wholedisk = 0; 2011 2012 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 2013 &wholedisk); 2014 if (wholedisk) { 2015 int slen = strlen(srchval); 2016 int vlen = strlen(val); 2017 2018 if (slen != vlen - 2) 2019 break; 2020 2021 /* 2022 * make_leaf_vdev() should only set 2023 * wholedisk for ZPOOL_CONFIG_PATHs which 2024 * will include "/dev/dsk/", giving plenty of 2025 * room for the indices used next. 2026 */ 2027 ASSERT(vlen >= 6); 2028 2029 /* 2030 * strings identical except trailing "s0" 2031 */ 2032 if (strcmp(&val[vlen - 2], "s0") == 0 && 2033 strncmp(srchval, val, slen) == 0) 2034 return (nv); 2035 2036 /* 2037 * strings identical except trailing "s0/old" 2038 */ 2039 if (strcmp(&val[vlen - 6], "s0/old") == 0 && 2040 strcmp(&srchval[slen - 4], "/old") == 0 && 2041 strncmp(srchval, val, slen - 4) == 0) 2042 return (nv); 2043 2044 break; 2045 } 2046 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2047#else 2048 if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2049#endif 2050 char *type, *idx, *end, *p; 2051 uint64_t id, vdev_id; 2052 2053 /* 2054 * Determine our vdev type, keeping in mind 2055 * that the srchval is composed of a type and 2056 * vdev id pair (i.e. mirror-4). 2057 */ 2058 if ((type = strdup(srchval)) == NULL) 2059 return (NULL); 2060 2061 if ((p = strrchr(type, '-')) == NULL) { 2062 free(type); 2063 break; 2064 } 2065 idx = p + 1; 2066 *p = '\0'; 2067 2068 /* 2069 * If the types don't match then keep looking. 2070 */ 2071 if (strncmp(val, type, strlen(val)) != 0) { 2072 free(type); 2073 break; 2074 } 2075 2076 verify(strncmp(type, VDEV_TYPE_RAIDZ, 2077 strlen(VDEV_TYPE_RAIDZ)) == 0 || 2078 strncmp(type, VDEV_TYPE_MIRROR, 2079 strlen(VDEV_TYPE_MIRROR)) == 0); 2080 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 2081 &id) == 0); 2082 2083 errno = 0; 2084 vdev_id = strtoull(idx, &end, 10); 2085 2086 free(type); 2087 if (errno != 0) 2088 return (NULL); 2089 2090 /* 2091 * Now verify that we have the correct vdev id. 2092 */ 2093 if (vdev_id == id) 2094 return (nv); 2095 } 2096 2097 /* 2098 * Common case 2099 */ 2100 if (strcmp(srchval, val) == 0) 2101 return (nv); 2102 break; 2103 } 2104 2105 default: 2106 break; 2107 } 2108 2109 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 2110 &child, &children) != 0) 2111 return (NULL); 2112 2113 for (c = 0; c < children; c++) { 2114 if ((ret = vdev_to_nvlist_iter(child[c], search, 2115 avail_spare, l2cache, NULL)) != NULL) { 2116 /* 2117 * The 'is_log' value is only set for the toplevel 2118 * vdev, not the leaf vdevs. So we always lookup the 2119 * log device from the root of the vdev tree (where 2120 * 'log' is non-NULL). 2121 */ 2122 if (log != NULL && 2123 nvlist_lookup_uint64(child[c], 2124 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 && 2125 is_log) { 2126 *log = B_TRUE; 2127 } 2128 return (ret); 2129 } 2130 } 2131 2132 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, 2133 &child, &children) == 0) { 2134 for (c = 0; c < children; c++) { 2135 if ((ret = vdev_to_nvlist_iter(child[c], search, 2136 avail_spare, l2cache, NULL)) != NULL) { 2137 *avail_spare = B_TRUE; 2138 return (ret); 2139 } 2140 } 2141 } 2142 2143 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, 2144 &child, &children) == 0) { 2145 for (c = 0; c < children; c++) { 2146 if ((ret = vdev_to_nvlist_iter(child[c], search, 2147 avail_spare, l2cache, NULL)) != NULL) { 2148 *l2cache = B_TRUE; 2149 return (ret); 2150 } 2151 } 2152 } 2153 2154 return (NULL); 2155} 2156 2157/* 2158 * Given a physical path (minus the "/devices" prefix), find the 2159 * associated vdev. 2160 */ 2161nvlist_t * 2162zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath, 2163 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log) 2164{ 2165 nvlist_t *search, *nvroot, *ret; 2166 2167 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2168 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0); 2169 2170 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2171 &nvroot) == 0); 2172 2173 *avail_spare = B_FALSE; 2174 *l2cache = B_FALSE; 2175 if (log != NULL) 2176 *log = B_FALSE; 2177 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2178 nvlist_free(search); 2179 2180 return (ret); 2181} 2182 2183/* 2184 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz). 2185 */ 2186boolean_t 2187zpool_vdev_is_interior(const char *name) 2188{ 2189 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 || 2190 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0) 2191 return (B_TRUE); 2192 return (B_FALSE); 2193} 2194 2195nvlist_t * 2196zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare, 2197 boolean_t *l2cache, boolean_t *log) 2198{ 2199 char buf[MAXPATHLEN]; 2200 char *end; 2201 nvlist_t *nvroot, *search, *ret; 2202 uint64_t guid; 2203 2204 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2205 2206 guid = strtoull(path, &end, 10); 2207 if (guid != 0 && *end == '\0') { 2208 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0); 2209 } else if (zpool_vdev_is_interior(path)) { 2210 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0); 2211 } else if (path[0] != '/') { 2212 (void) snprintf(buf, sizeof (buf), "%s%s", _PATH_DEV, path); 2213 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0); 2214 } else { 2215 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0); 2216 } 2217 2218 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2219 &nvroot) == 0); 2220 2221 *avail_spare = B_FALSE; 2222 *l2cache = B_FALSE; 2223 if (log != NULL) 2224 *log = B_FALSE; 2225 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2226 nvlist_free(search); 2227 2228 return (ret); 2229} 2230 2231static int 2232vdev_online(nvlist_t *nv) 2233{ 2234 uint64_t ival; 2235 2236 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 || 2237 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 || 2238 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0) 2239 return (0); 2240 2241 return (1); 2242} 2243 2244/* 2245 * Helper function for zpool_get_physpaths(). 2246 */ 2247static int 2248vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size, 2249 size_t *bytes_written) 2250{ 2251 size_t bytes_left, pos, rsz; 2252 char *tmppath; 2253 const char *format; 2254 2255 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH, 2256 &tmppath) != 0) 2257 return (EZFS_NODEVICE); 2258 2259 pos = *bytes_written; 2260 bytes_left = physpath_size - pos; 2261 format = (pos == 0) ? "%s" : " %s"; 2262 2263 rsz = snprintf(physpath + pos, bytes_left, format, tmppath); 2264 *bytes_written += rsz; 2265 2266 if (rsz >= bytes_left) { 2267 /* if physpath was not copied properly, clear it */ 2268 if (bytes_left != 0) { 2269 physpath[pos] = 0; 2270 } 2271 return (EZFS_NOSPC); 2272 } 2273 return (0); 2274} 2275 2276static int 2277vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size, 2278 size_t *rsz, boolean_t is_spare) 2279{ 2280 char *type; 2281 int ret; 2282 2283 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) 2284 return (EZFS_INVALCONFIG); 2285 2286 if (strcmp(type, VDEV_TYPE_DISK) == 0) { 2287 /* 2288 * An active spare device has ZPOOL_CONFIG_IS_SPARE set. 2289 * For a spare vdev, we only want to boot from the active 2290 * spare device. 2291 */ 2292 if (is_spare) { 2293 uint64_t spare = 0; 2294 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 2295 &spare); 2296 if (!spare) 2297 return (EZFS_INVALCONFIG); 2298 } 2299 2300 if (vdev_online(nv)) { 2301 if ((ret = vdev_get_one_physpath(nv, physpath, 2302 phypath_size, rsz)) != 0) 2303 return (ret); 2304 } 2305 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 || 2306 strcmp(type, VDEV_TYPE_REPLACING) == 0 || 2307 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) { 2308 nvlist_t **child; 2309 uint_t count; 2310 int i, ret; 2311 2312 if (nvlist_lookup_nvlist_array(nv, 2313 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0) 2314 return (EZFS_INVALCONFIG); 2315 2316 for (i = 0; i < count; i++) { 2317 ret = vdev_get_physpaths(child[i], physpath, 2318 phypath_size, rsz, is_spare); 2319 if (ret == EZFS_NOSPC) 2320 return (ret); 2321 } 2322 } 2323 2324 return (EZFS_POOL_INVALARG); 2325} 2326 2327/* 2328 * Get phys_path for a root pool config. 2329 * Return 0 on success; non-zero on failure. 2330 */ 2331static int 2332zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size) 2333{ 2334 size_t rsz; 2335 nvlist_t *vdev_root; 2336 nvlist_t **child; 2337 uint_t count; 2338 char *type; 2339 2340 rsz = 0; 2341 2342 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2343 &vdev_root) != 0) 2344 return (EZFS_INVALCONFIG); 2345 2346 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 || 2347 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN, 2348 &child, &count) != 0) 2349 return (EZFS_INVALCONFIG); 2350 2351 /* 2352 * root pool can not have EFI labeled disks and can only have 2353 * a single top-level vdev. 2354 */ 2355 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1 || 2356 pool_uses_efi(vdev_root)) 2357 return (EZFS_POOL_INVALARG); 2358 2359 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz, 2360 B_FALSE); 2361 2362 /* No online devices */ 2363 if (rsz == 0) 2364 return (EZFS_NODEVICE); 2365 2366 return (0); 2367} 2368 2369/* 2370 * Get phys_path for a root pool 2371 * Return 0 on success; non-zero on failure. 2372 */ 2373int 2374zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size) 2375{ 2376 return (zpool_get_config_physpath(zhp->zpool_config, physpath, 2377 phypath_size)); 2378} 2379 2380/* 2381 * If the device has being dynamically expanded then we need to relabel 2382 * the disk to use the new unallocated space. 2383 */ 2384static int 2385zpool_relabel_disk(libzfs_handle_t *hdl, const char *name) 2386{ 2387#ifdef sun 2388 char path[MAXPATHLEN]; 2389 char errbuf[1024]; 2390 int fd, error; 2391 int (*_efi_use_whole_disk)(int); 2392 2393 if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT, 2394 "efi_use_whole_disk")) == NULL) 2395 return (-1); 2396 2397 (void) snprintf(path, sizeof (path), "%s/%s", RDISK_ROOT, name); 2398 2399 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 2400 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2401 "relabel '%s': unable to open device"), name); 2402 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 2403 } 2404 2405 /* 2406 * It's possible that we might encounter an error if the device 2407 * does not have any unallocated space left. If so, we simply 2408 * ignore that error and continue on. 2409 */ 2410 error = _efi_use_whole_disk(fd); 2411 (void) close(fd); 2412 if (error && error != VT_ENOSPC) { 2413 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2414 "relabel '%s': unable to read disk capacity"), name); 2415 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 2416 } 2417#endif /* sun */ 2418 return (0); 2419} 2420 2421/* 2422 * Bring the specified vdev online. The 'flags' parameter is a set of the 2423 * ZFS_ONLINE_* flags. 2424 */ 2425int 2426zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags, 2427 vdev_state_t *newstate) 2428{ 2429 zfs_cmd_t zc = { 0 }; 2430 char msg[1024]; 2431 nvlist_t *tgt; 2432 boolean_t avail_spare, l2cache, islog; 2433 libzfs_handle_t *hdl = zhp->zpool_hdl; 2434 2435 if (flags & ZFS_ONLINE_EXPAND) { 2436 (void) snprintf(msg, sizeof (msg), 2437 dgettext(TEXT_DOMAIN, "cannot expand %s"), path); 2438 } else { 2439 (void) snprintf(msg, sizeof (msg), 2440 dgettext(TEXT_DOMAIN, "cannot online %s"), path); 2441 } 2442 2443 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2444 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2445 &islog)) == NULL) 2446 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2447 2448 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2449 2450 if (avail_spare) 2451 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2452 2453 if (flags & ZFS_ONLINE_EXPAND || 2454 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) { 2455 char *pathname = NULL; 2456 uint64_t wholedisk = 0; 2457 2458 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK, 2459 &wholedisk); 2460 verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH, 2461 &pathname) == 0); 2462 2463 /* 2464 * XXX - L2ARC 1.0 devices can't support expansion. 2465 */ 2466 if (l2cache) { 2467 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2468 "cannot expand cache devices")); 2469 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg)); 2470 } 2471 2472 if (wholedisk) { 2473 pathname += strlen(DISK_ROOT) + 1; 2474 (void) zpool_relabel_disk(hdl, pathname); 2475 } 2476 } 2477 2478 zc.zc_cookie = VDEV_STATE_ONLINE; 2479 zc.zc_obj = flags; 2480 2481 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) { 2482 if (errno == EINVAL) { 2483 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split " 2484 "from this pool into a new one. Use '%s' " 2485 "instead"), "zpool detach"); 2486 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg)); 2487 } 2488 return (zpool_standard_error(hdl, errno, msg)); 2489 } 2490 2491 *newstate = zc.zc_cookie; 2492 return (0); 2493} 2494 2495/* 2496 * Take the specified vdev offline 2497 */ 2498int 2499zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp) 2500{ 2501 zfs_cmd_t zc = { 0 }; 2502 char msg[1024]; 2503 nvlist_t *tgt; 2504 boolean_t avail_spare, l2cache; 2505 libzfs_handle_t *hdl = zhp->zpool_hdl; 2506 2507 (void) snprintf(msg, sizeof (msg), 2508 dgettext(TEXT_DOMAIN, "cannot offline %s"), path); 2509 2510 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2511 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2512 NULL)) == NULL) 2513 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2514 2515 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2516 2517 if (avail_spare) 2518 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2519 2520 zc.zc_cookie = VDEV_STATE_OFFLINE; 2521 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0; 2522 2523 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2524 return (0); 2525 2526 switch (errno) { 2527 case EBUSY: 2528 2529 /* 2530 * There are no other replicas of this device. 2531 */ 2532 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2533 2534 case EEXIST: 2535 /* 2536 * The log device has unplayed logs 2537 */ 2538 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg)); 2539 2540 default: 2541 return (zpool_standard_error(hdl, errno, msg)); 2542 } 2543} 2544 2545/* 2546 * Mark the given vdev faulted. 2547 */ 2548int 2549zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2550{ 2551 zfs_cmd_t zc = { 0 }; 2552 char msg[1024]; 2553 libzfs_handle_t *hdl = zhp->zpool_hdl; 2554 2555 (void) snprintf(msg, sizeof (msg), 2556 dgettext(TEXT_DOMAIN, "cannot fault %llu"), guid); 2557 2558 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2559 zc.zc_guid = guid; 2560 zc.zc_cookie = VDEV_STATE_FAULTED; 2561 zc.zc_obj = aux; 2562 2563 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2564 return (0); 2565 2566 switch (errno) { 2567 case EBUSY: 2568 2569 /* 2570 * There are no other replicas of this device. 2571 */ 2572 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2573 2574 default: 2575 return (zpool_standard_error(hdl, errno, msg)); 2576 } 2577 2578} 2579 2580/* 2581 * Mark the given vdev degraded. 2582 */ 2583int 2584zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2585{ 2586 zfs_cmd_t zc = { 0 }; 2587 char msg[1024]; 2588 libzfs_handle_t *hdl = zhp->zpool_hdl; 2589 2590 (void) snprintf(msg, sizeof (msg), 2591 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), guid); 2592 2593 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2594 zc.zc_guid = guid; 2595 zc.zc_cookie = VDEV_STATE_DEGRADED; 2596 zc.zc_obj = aux; 2597 2598 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2599 return (0); 2600 2601 return (zpool_standard_error(hdl, errno, msg)); 2602} 2603 2604/* 2605 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as 2606 * a hot spare. 2607 */ 2608static boolean_t 2609is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which) 2610{ 2611 nvlist_t **child; 2612 uint_t c, children; 2613 char *type; 2614 2615 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child, 2616 &children) == 0) { 2617 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE, 2618 &type) == 0); 2619 2620 if (strcmp(type, VDEV_TYPE_SPARE) == 0 && 2621 children == 2 && child[which] == tgt) 2622 return (B_TRUE); 2623 2624 for (c = 0; c < children; c++) 2625 if (is_replacing_spare(child[c], tgt, which)) 2626 return (B_TRUE); 2627 } 2628 2629 return (B_FALSE); 2630} 2631 2632/* 2633 * Attach new_disk (fully described by nvroot) to old_disk. 2634 * If 'replacing' is specified, the new disk will replace the old one. 2635 */ 2636int 2637zpool_vdev_attach(zpool_handle_t *zhp, 2638 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing) 2639{ 2640 zfs_cmd_t zc = { 0 }; 2641 char msg[1024]; 2642 int ret; 2643 nvlist_t *tgt; 2644 boolean_t avail_spare, l2cache, islog; 2645 uint64_t val; 2646 char *newname; 2647 nvlist_t **child; 2648 uint_t children; 2649 nvlist_t *config_root; 2650 libzfs_handle_t *hdl = zhp->zpool_hdl; 2651 boolean_t rootpool = zpool_is_bootable(zhp); 2652 2653 if (replacing) 2654 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2655 "cannot replace %s with %s"), old_disk, new_disk); 2656 else 2657 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2658 "cannot attach %s to %s"), new_disk, old_disk); 2659 2660 /* 2661 * If this is a root pool, make sure that we're not attaching an 2662 * EFI labeled device. 2663 */ 2664 if (rootpool && pool_uses_efi(nvroot)) { 2665 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2666 "EFI labeled devices are not supported on root pools.")); 2667 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg)); 2668 } 2669 2670 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2671 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache, 2672 &islog)) == 0) 2673 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2674 2675 if (avail_spare) 2676 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2677 2678 if (l2cache) 2679 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2680 2681 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2682 zc.zc_cookie = replacing; 2683 2684 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 2685 &child, &children) != 0 || children != 1) { 2686 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2687 "new device must be a single disk")); 2688 return (zfs_error(hdl, EZFS_INVALCONFIG, msg)); 2689 } 2690 2691 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 2692 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0); 2693 2694 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL) 2695 return (-1); 2696 2697 /* 2698 * If the target is a hot spare that has been swapped in, we can only 2699 * replace it with another hot spare. 2700 */ 2701 if (replacing && 2702 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 && 2703 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache, 2704 NULL) == NULL || !avail_spare) && 2705 is_replacing_spare(config_root, tgt, 1)) { 2706 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2707 "can only be replaced by another hot spare")); 2708 free(newname); 2709 return (zfs_error(hdl, EZFS_BADTARGET, msg)); 2710 } 2711 2712 free(newname); 2713 2714 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 2715 return (-1); 2716 2717 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc); 2718 2719 zcmd_free_nvlists(&zc); 2720 2721 if (ret == 0) { 2722 if (rootpool) { 2723 /* 2724 * XXX need a better way to prevent user from 2725 * booting up a half-baked vdev. 2726 */ 2727 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make " 2728 "sure to wait until resilver is done " 2729 "before rebooting.\n")); 2730 (void) fprintf(stderr, "\n"); 2731 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "If " 2732 "you boot from pool '%s', you may need to update\n" 2733 "boot code on newly attached disk '%s'.\n\n" 2734 "Assuming you use GPT partitioning and 'da0' is " 2735 "your new boot disk\n" 2736 "you may use the following command:\n\n" 2737 "\tgpart bootcode -b /boot/pmbr -p " 2738 "/boot/gptzfsboot -i 1 da0\n\n"), 2739 zhp->zpool_name, new_disk); 2740 } 2741 return (0); 2742 } 2743 2744 switch (errno) { 2745 case ENOTSUP: 2746 /* 2747 * Can't attach to or replace this type of vdev. 2748 */ 2749 if (replacing) { 2750 uint64_t version = zpool_get_prop_int(zhp, 2751 ZPOOL_PROP_VERSION, NULL); 2752 2753 if (islog) 2754 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2755 "cannot replace a log with a spare")); 2756 else if (version >= SPA_VERSION_MULTI_REPLACE) 2757 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2758 "already in replacing/spare config; wait " 2759 "for completion or use 'zpool detach'")); 2760 else 2761 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2762 "cannot replace a replacing device")); 2763 } else { 2764 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2765 "can only attach to mirrors and top-level " 2766 "disks")); 2767 } 2768 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2769 break; 2770 2771 case EINVAL: 2772 /* 2773 * The new device must be a single disk. 2774 */ 2775 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2776 "new device must be a single disk")); 2777 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg); 2778 break; 2779 2780 case EBUSY: 2781 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"), 2782 new_disk); 2783 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2784 break; 2785 2786 case EOVERFLOW: 2787 /* 2788 * The new device is too small. 2789 */ 2790 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2791 "device is too small")); 2792 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2793 break; 2794 2795 case EDOM: 2796 /* 2797 * The new device has a different alignment requirement. 2798 */ 2799 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2800 "devices have different sector alignment")); 2801 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2802 break; 2803 2804 case ENAMETOOLONG: 2805 /* 2806 * The resulting top-level vdev spec won't fit in the label. 2807 */ 2808 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg); 2809 break; 2810 2811 default: 2812 (void) zpool_standard_error(hdl, errno, msg); 2813 } 2814 2815 return (-1); 2816} 2817 2818/* 2819 * Detach the specified device. 2820 */ 2821int 2822zpool_vdev_detach(zpool_handle_t *zhp, const char *path) 2823{ 2824 zfs_cmd_t zc = { 0 }; 2825 char msg[1024]; 2826 nvlist_t *tgt; 2827 boolean_t avail_spare, l2cache; 2828 libzfs_handle_t *hdl = zhp->zpool_hdl; 2829 2830 (void) snprintf(msg, sizeof (msg), 2831 dgettext(TEXT_DOMAIN, "cannot detach %s"), path); 2832 2833 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2834 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2835 NULL)) == 0) 2836 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2837 2838 if (avail_spare) 2839 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2840 2841 if (l2cache) 2842 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2843 2844 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2845 2846 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0) 2847 return (0); 2848 2849 switch (errno) { 2850 2851 case ENOTSUP: 2852 /* 2853 * Can't detach from this type of vdev. 2854 */ 2855 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only " 2856 "applicable to mirror and replacing vdevs")); 2857 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2858 break; 2859 2860 case EBUSY: 2861 /* 2862 * There are no other replicas of this device. 2863 */ 2864 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg); 2865 break; 2866 2867 default: 2868 (void) zpool_standard_error(hdl, errno, msg); 2869 } 2870 2871 return (-1); 2872} 2873 2874/* 2875 * Find a mirror vdev in the source nvlist. 2876 * 2877 * The mchild array contains a list of disks in one of the top-level mirrors 2878 * of the source pool. The schild array contains a list of disks that the 2879 * user specified on the command line. We loop over the mchild array to 2880 * see if any entry in the schild array matches. 2881 * 2882 * If a disk in the mchild array is found in the schild array, we return 2883 * the index of that entry. Otherwise we return -1. 2884 */ 2885static int 2886find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren, 2887 nvlist_t **schild, uint_t schildren) 2888{ 2889 uint_t mc; 2890 2891 for (mc = 0; mc < mchildren; mc++) { 2892 uint_t sc; 2893 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2894 mchild[mc], B_FALSE); 2895 2896 for (sc = 0; sc < schildren; sc++) { 2897 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2898 schild[sc], B_FALSE); 2899 boolean_t result = (strcmp(mpath, spath) == 0); 2900 2901 free(spath); 2902 if (result) { 2903 free(mpath); 2904 return (mc); 2905 } 2906 } 2907 2908 free(mpath); 2909 } 2910 2911 return (-1); 2912} 2913 2914/* 2915 * Split a mirror pool. If newroot points to null, then a new nvlist 2916 * is generated and it is the responsibility of the caller to free it. 2917 */ 2918int 2919zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot, 2920 nvlist_t *props, splitflags_t flags) 2921{ 2922 zfs_cmd_t zc = { 0 }; 2923 char msg[1024]; 2924 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL; 2925 nvlist_t **varray = NULL, *zc_props = NULL; 2926 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0; 2927 libzfs_handle_t *hdl = zhp->zpool_hdl; 2928 uint64_t vers; 2929 boolean_t freelist = B_FALSE, memory_err = B_TRUE; 2930 int retval = 0; 2931 2932 (void) snprintf(msg, sizeof (msg), 2933 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name); 2934 2935 if (!zpool_name_valid(hdl, B_FALSE, newname)) 2936 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 2937 2938 if ((config = zpool_get_config(zhp, NULL)) == NULL) { 2939 (void) fprintf(stderr, gettext("Internal error: unable to " 2940 "retrieve pool configuration\n")); 2941 return (-1); 2942 } 2943 2944 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree) 2945 == 0); 2946 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0); 2947 2948 if (props) { 2949 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 2950 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name, 2951 props, vers, flags, msg)) == NULL) 2952 return (-1); 2953 } 2954 2955 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2956 &children) != 0) { 2957 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2958 "Source pool is missing vdev tree")); 2959 if (zc_props) 2960 nvlist_free(zc_props); 2961 return (-1); 2962 } 2963 2964 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *)); 2965 vcount = 0; 2966 2967 if (*newroot == NULL || 2968 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, 2969 &newchild, &newchildren) != 0) 2970 newchildren = 0; 2971 2972 for (c = 0; c < children; c++) { 2973 uint64_t is_log = B_FALSE, is_hole = B_FALSE; 2974 char *type; 2975 nvlist_t **mchild, *vdev; 2976 uint_t mchildren; 2977 int entry; 2978 2979 /* 2980 * Unlike cache & spares, slogs are stored in the 2981 * ZPOOL_CONFIG_CHILDREN array. We filter them out here. 2982 */ 2983 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 2984 &is_log); 2985 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, 2986 &is_hole); 2987 if (is_log || is_hole) { 2988 /* 2989 * Create a hole vdev and put it in the config. 2990 */ 2991 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0) 2992 goto out; 2993 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, 2994 VDEV_TYPE_HOLE) != 0) 2995 goto out; 2996 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE, 2997 1) != 0) 2998 goto out; 2999 if (lastlog == 0) 3000 lastlog = vcount; 3001 varray[vcount++] = vdev; 3002 continue; 3003 } 3004 lastlog = 0; 3005 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type) 3006 == 0); 3007 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) { 3008 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3009 "Source pool must be composed only of mirrors\n")); 3010 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 3011 goto out; 3012 } 3013 3014 verify(nvlist_lookup_nvlist_array(child[c], 3015 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 3016 3017 /* find or add an entry for this top-level vdev */ 3018 if (newchildren > 0 && 3019 (entry = find_vdev_entry(zhp, mchild, mchildren, 3020 newchild, newchildren)) >= 0) { 3021 /* We found a disk that the user specified. */ 3022 vdev = mchild[entry]; 3023 ++found; 3024 } else { 3025 /* User didn't specify a disk for this vdev. */ 3026 vdev = mchild[mchildren - 1]; 3027 } 3028 3029 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0) 3030 goto out; 3031 } 3032 3033 /* did we find every disk the user specified? */ 3034 if (found != newchildren) { 3035 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must " 3036 "include at most one disk from each mirror")); 3037 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 3038 goto out; 3039 } 3040 3041 /* Prepare the nvlist for populating. */ 3042 if (*newroot == NULL) { 3043 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0) 3044 goto out; 3045 freelist = B_TRUE; 3046 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE, 3047 VDEV_TYPE_ROOT) != 0) 3048 goto out; 3049 } else { 3050 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0); 3051 } 3052 3053 /* Add all the children we found */ 3054 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray, 3055 lastlog == 0 ? vcount : lastlog) != 0) 3056 goto out; 3057 3058 /* 3059 * If we're just doing a dry run, exit now with success. 3060 */ 3061 if (flags.dryrun) { 3062 memory_err = B_FALSE; 3063 freelist = B_FALSE; 3064 goto out; 3065 } 3066 3067 /* now build up the config list & call the ioctl */ 3068 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0) 3069 goto out; 3070 3071 if (nvlist_add_nvlist(newconfig, 3072 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 || 3073 nvlist_add_string(newconfig, 3074 ZPOOL_CONFIG_POOL_NAME, newname) != 0 || 3075 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0) 3076 goto out; 3077 3078 /* 3079 * The new pool is automatically part of the namespace unless we 3080 * explicitly export it. 3081 */ 3082 if (!flags.import) 3083 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT; 3084 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3085 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string)); 3086 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0) 3087 goto out; 3088 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 3089 goto out; 3090 3091 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) { 3092 retval = zpool_standard_error(hdl, errno, msg); 3093 goto out; 3094 } 3095 3096 freelist = B_FALSE; 3097 memory_err = B_FALSE; 3098 3099out: 3100 if (varray != NULL) { 3101 int v; 3102 3103 for (v = 0; v < vcount; v++) 3104 nvlist_free(varray[v]); 3105 free(varray); 3106 } 3107 zcmd_free_nvlists(&zc); 3108 if (zc_props) 3109 nvlist_free(zc_props); 3110 if (newconfig) 3111 nvlist_free(newconfig); 3112 if (freelist) { 3113 nvlist_free(*newroot); 3114 *newroot = NULL; 3115 } 3116 3117 if (retval != 0) 3118 return (retval); 3119 3120 if (memory_err) 3121 return (no_memory(hdl)); 3122 3123 return (0); 3124} 3125 3126/* 3127 * Remove the given device. Currently, this is supported only for hot spares 3128 * and level 2 cache devices. 3129 */ 3130int 3131zpool_vdev_remove(zpool_handle_t *zhp, const char *path) 3132{ 3133 zfs_cmd_t zc = { 0 }; 3134 char msg[1024]; 3135 nvlist_t *tgt; 3136 boolean_t avail_spare, l2cache, islog; 3137 libzfs_handle_t *hdl = zhp->zpool_hdl; 3138 uint64_t version; 3139 3140 (void) snprintf(msg, sizeof (msg), 3141 dgettext(TEXT_DOMAIN, "cannot remove %s"), path); 3142 3143 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3144 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 3145 &islog)) == 0) 3146 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3147 /* 3148 * XXX - this should just go away. 3149 */ 3150 if (!avail_spare && !l2cache && !islog) { 3151 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3152 "only inactive hot spares, cache, top-level, " 3153 "or log devices can be removed")); 3154 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3155 } 3156 3157 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 3158 if (islog && version < SPA_VERSION_HOLES) { 3159 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3160 "pool must be upgrade to support log removal")); 3161 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 3162 } 3163 3164 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 3165 3166 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0) 3167 return (0); 3168 3169 return (zpool_standard_error(hdl, errno, msg)); 3170} 3171 3172/* 3173 * Clear the errors for the pool, or the particular device if specified. 3174 */ 3175int 3176zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) 3177{ 3178 zfs_cmd_t zc = { 0 }; 3179 char msg[1024]; 3180 nvlist_t *tgt; 3181 zpool_rewind_policy_t policy; 3182 boolean_t avail_spare, l2cache; 3183 libzfs_handle_t *hdl = zhp->zpool_hdl; 3184 nvlist_t *nvi = NULL; 3185 int error; 3186 3187 if (path) 3188 (void) snprintf(msg, sizeof (msg), 3189 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3190 path); 3191 else 3192 (void) snprintf(msg, sizeof (msg), 3193 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3194 zhp->zpool_name); 3195 3196 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3197 if (path) { 3198 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, 3199 &l2cache, NULL)) == 0) 3200 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3201 3202 /* 3203 * Don't allow error clearing for hot spares. Do allow 3204 * error clearing for l2cache devices. 3205 */ 3206 if (avail_spare) 3207 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 3208 3209 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, 3210 &zc.zc_guid) == 0); 3211 } 3212 3213 zpool_get_rewind_policy(rewindnvl, &policy); 3214 zc.zc_cookie = policy.zrp_request; 3215 3216 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0) 3217 return (-1); 3218 3219 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0) 3220 return (-1); 3221 3222 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 && 3223 errno == ENOMEM) { 3224 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 3225 zcmd_free_nvlists(&zc); 3226 return (-1); 3227 } 3228 } 3229 3230 if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) && 3231 errno != EPERM && errno != EACCES)) { 3232 if (policy.zrp_request & 3233 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 3234 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 3235 zpool_rewind_exclaim(hdl, zc.zc_name, 3236 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), 3237 nvi); 3238 nvlist_free(nvi); 3239 } 3240 zcmd_free_nvlists(&zc); 3241 return (0); 3242 } 3243 3244 zcmd_free_nvlists(&zc); 3245 return (zpool_standard_error(hdl, errno, msg)); 3246} 3247 3248/* 3249 * Similar to zpool_clear(), but takes a GUID (used by fmd). 3250 */ 3251int 3252zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid) 3253{ 3254 zfs_cmd_t zc = { 0 }; 3255 char msg[1024]; 3256 libzfs_handle_t *hdl = zhp->zpool_hdl; 3257 3258 (void) snprintf(msg, sizeof (msg), 3259 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"), 3260 guid); 3261 3262 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3263 zc.zc_guid = guid; 3264 zc.zc_cookie = ZPOOL_NO_REWIND; 3265 3266 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0) 3267 return (0); 3268 3269 return (zpool_standard_error(hdl, errno, msg)); 3270} 3271 3272/* 3273 * Change the GUID for a pool. 3274 */ 3275int 3276zpool_reguid(zpool_handle_t *zhp) 3277{ 3278 char msg[1024]; 3279 libzfs_handle_t *hdl = zhp->zpool_hdl; 3280 zfs_cmd_t zc = { 0 }; 3281 3282 (void) snprintf(msg, sizeof (msg), 3283 dgettext(TEXT_DOMAIN, "cannot reguid '%s'"), zhp->zpool_name); 3284 3285 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3286 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REGUID, &zc) == 0) 3287 return (0); 3288 3289 return (zpool_standard_error(hdl, errno, msg)); 3290} 3291 3292/* 3293 * Reopen the pool. 3294 */ 3295int 3296zpool_reopen(zpool_handle_t *zhp) 3297{ 3298 zfs_cmd_t zc = { 0 }; 3299 char msg[1024]; 3300 libzfs_handle_t *hdl = zhp->zpool_hdl; 3301 3302 (void) snprintf(msg, sizeof (msg), 3303 dgettext(TEXT_DOMAIN, "cannot reopen '%s'"), 3304 zhp->zpool_name); 3305 3306 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3307 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REOPEN, &zc) == 0) 3308 return (0); 3309 return (zpool_standard_error(hdl, errno, msg)); 3310} 3311 3312/* 3313 * Convert from a devid string to a path. 3314 */ 3315static char * 3316devid_to_path(char *devid_str) 3317{ 3318 ddi_devid_t devid; 3319 char *minor; 3320 char *path; 3321 devid_nmlist_t *list = NULL; 3322 int ret; 3323 3324 if (devid_str_decode(devid_str, &devid, &minor) != 0) 3325 return (NULL); 3326 3327 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list); 3328 3329 devid_str_free(minor); 3330 devid_free(devid); 3331 3332 if (ret != 0) 3333 return (NULL); 3334 3335 if ((path = strdup(list[0].devname)) == NULL) 3336 return (NULL); 3337 3338 devid_free_nmlist(list); 3339 3340 return (path); 3341} 3342 3343/* 3344 * Convert from a path to a devid string. 3345 */ 3346static char * 3347path_to_devid(const char *path) 3348{ 3349#ifdef have_devid 3350 int fd; 3351 ddi_devid_t devid; 3352 char *minor, *ret; 3353 3354 if ((fd = open(path, O_RDONLY)) < 0) 3355 return (NULL); 3356 3357 minor = NULL; 3358 ret = NULL; 3359 if (devid_get(fd, &devid) == 0) { 3360 if (devid_get_minor_name(fd, &minor) == 0) 3361 ret = devid_str_encode(devid, minor); 3362 if (minor != NULL) 3363 devid_str_free(minor); 3364 devid_free(devid); 3365 } 3366 (void) close(fd); 3367 3368 return (ret); 3369#else 3370 return (NULL); 3371#endif 3372} 3373 3374/* 3375 * Issue the necessary ioctl() to update the stored path value for the vdev. We 3376 * ignore any failure here, since a common case is for an unprivileged user to 3377 * type 'zpool status', and we'll display the correct information anyway. 3378 */ 3379static void 3380set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path) 3381{ 3382 zfs_cmd_t zc = { 0 }; 3383 3384 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3385 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value)); 3386 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3387 &zc.zc_guid) == 0); 3388 3389 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc); 3390} 3391 3392/* 3393 * Given a vdev, return the name to display in iostat. If the vdev has a path, 3394 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type. 3395 * We also check if this is a whole disk, in which case we strip off the 3396 * trailing 's0' slice name. 3397 * 3398 * This routine is also responsible for identifying when disks have been 3399 * reconfigured in a new location. The kernel will have opened the device by 3400 * devid, but the path will still refer to the old location. To catch this, we 3401 * first do a path -> devid translation (which is fast for the common case). If 3402 * the devid matches, we're done. If not, we do a reverse devid -> path 3403 * translation and issue the appropriate ioctl() to update the path of the vdev. 3404 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any 3405 * of these checks. 3406 */ 3407char * 3408zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv, 3409 boolean_t verbose) 3410{ 3411 char *path, *devid; 3412 uint64_t value; 3413 char buf[64]; 3414 vdev_stat_t *vs; 3415 uint_t vsc; 3416 int have_stats; 3417 int have_path; 3418 3419 have_stats = nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 3420 (uint64_t **)&vs, &vsc) == 0; 3421 have_path = nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0; 3422 3423 /* 3424 * If the device is not currently present, assume it will not 3425 * come back at the same device path. Display the device by GUID. 3426 */ 3427 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &value) == 0 || 3428 have_path && have_stats && vs->vs_state <= VDEV_STATE_CANT_OPEN) { 3429 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3430 &value) == 0); 3431 (void) snprintf(buf, sizeof (buf), "%llu", 3432 (u_longlong_t)value); 3433 path = buf; 3434 } else if (have_path) { 3435 3436 /* 3437 * If the device is dead (faulted, offline, etc) then don't 3438 * bother opening it. Otherwise we may be forcing the user to 3439 * open a misbehaving device, which can have undesirable 3440 * effects. 3441 */ 3442 if ((have_stats == 0 || 3443 vs->vs_state >= VDEV_STATE_DEGRADED) && 3444 zhp != NULL && 3445 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) { 3446 /* 3447 * Determine if the current path is correct. 3448 */ 3449 char *newdevid = path_to_devid(path); 3450 3451 if (newdevid == NULL || 3452 strcmp(devid, newdevid) != 0) { 3453 char *newpath; 3454 3455 if ((newpath = devid_to_path(devid)) != NULL) { 3456 /* 3457 * Update the path appropriately. 3458 */ 3459 set_path(zhp, nv, newpath); 3460 if (nvlist_add_string(nv, 3461 ZPOOL_CONFIG_PATH, newpath) == 0) 3462 verify(nvlist_lookup_string(nv, 3463 ZPOOL_CONFIG_PATH, 3464 &path) == 0); 3465 free(newpath); 3466 } 3467 } 3468 3469 if (newdevid) 3470 devid_str_free(newdevid); 3471 } 3472 3473#ifdef sun 3474 if (strncmp(path, "/dev/dsk/", 9) == 0) 3475 path += 9; 3476 3477 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 3478 &value) == 0 && value) { 3479 int pathlen = strlen(path); 3480 char *tmp = zfs_strdup(hdl, path); 3481 3482 /* 3483 * If it starts with c#, and ends with "s0", chop 3484 * the "s0" off, or if it ends with "s0/old", remove 3485 * the "s0" from the middle. 3486 */ 3487 if (CTD_CHECK(tmp)) { 3488 if (strcmp(&tmp[pathlen - 2], "s0") == 0) { 3489 tmp[pathlen - 2] = '\0'; 3490 } else if (pathlen > 6 && 3491 strcmp(&tmp[pathlen - 6], "s0/old") == 0) { 3492 (void) strcpy(&tmp[pathlen - 6], 3493 "/old"); 3494 } 3495 } 3496 return (tmp); 3497 } 3498#else /* !sun */ 3499 if (strncmp(path, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 3500 path += sizeof(_PATH_DEV) - 1; 3501#endif /* !sun */ 3502 } else { 3503 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0); 3504 3505 /* 3506 * If it's a raidz device, we need to stick in the parity level. 3507 */ 3508 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) { 3509 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, 3510 &value) == 0); 3511 (void) snprintf(buf, sizeof (buf), "%s%llu", path, 3512 (u_longlong_t)value); 3513 path = buf; 3514 } 3515 3516 /* 3517 * We identify each top-level vdev by using a <type-id> 3518 * naming convention. 3519 */ 3520 if (verbose) { 3521 uint64_t id; 3522 3523 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 3524 &id) == 0); 3525 (void) snprintf(buf, sizeof (buf), "%s-%llu", path, 3526 (u_longlong_t)id); 3527 path = buf; 3528 } 3529 } 3530 3531 return (zfs_strdup(hdl, path)); 3532} 3533 3534static int 3535zbookmark_compare(const void *a, const void *b) 3536{ 3537 return (memcmp(a, b, sizeof (zbookmark_phys_t))); 3538} 3539 3540/* 3541 * Retrieve the persistent error log, uniquify the members, and return to the 3542 * caller. 3543 */ 3544int 3545zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp) 3546{ 3547 zfs_cmd_t zc = { 0 }; 3548 uint64_t count; 3549 zbookmark_phys_t *zb = NULL; 3550 int i; 3551 3552 /* 3553 * Retrieve the raw error list from the kernel. If the number of errors 3554 * has increased, allocate more space and continue until we get the 3555 * entire list. 3556 */ 3557 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT, 3558 &count) == 0); 3559 if (count == 0) 3560 return (0); 3561 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl, 3562 count * sizeof (zbookmark_phys_t))) == (uintptr_t)NULL) 3563 return (-1); 3564 zc.zc_nvlist_dst_size = count; 3565 (void) strcpy(zc.zc_name, zhp->zpool_name); 3566 for (;;) { 3567 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG, 3568 &zc) != 0) { 3569 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3570 if (errno == ENOMEM) { 3571 void *dst; 3572 3573 count = zc.zc_nvlist_dst_size; 3574 dst = zfs_alloc(zhp->zpool_hdl, count * 3575 sizeof (zbookmark_phys_t)); 3576 if (dst == NULL) 3577 return (-1); 3578 zc.zc_nvlist_dst = (uintptr_t)dst; 3579 } else { 3580 return (-1); 3581 } 3582 } else { 3583 break; 3584 } 3585 } 3586 3587 /* 3588 * Sort the resulting bookmarks. This is a little confusing due to the 3589 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last 3590 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks 3591 * _not_ copied as part of the process. So we point the start of our 3592 * array appropriate and decrement the total number of elements. 3593 */ 3594 zb = ((zbookmark_phys_t *)(uintptr_t)zc.zc_nvlist_dst) + 3595 zc.zc_nvlist_dst_size; 3596 count -= zc.zc_nvlist_dst_size; 3597 3598 qsort(zb, count, sizeof (zbookmark_phys_t), zbookmark_compare); 3599 3600 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0); 3601 3602 /* 3603 * Fill in the nverrlistp with nvlist's of dataset and object numbers. 3604 */ 3605 for (i = 0; i < count; i++) { 3606 nvlist_t *nv; 3607 3608 /* ignoring zb_blkid and zb_level for now */ 3609 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset && 3610 zb[i-1].zb_object == zb[i].zb_object) 3611 continue; 3612 3613 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0) 3614 goto nomem; 3615 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET, 3616 zb[i].zb_objset) != 0) { 3617 nvlist_free(nv); 3618 goto nomem; 3619 } 3620 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT, 3621 zb[i].zb_object) != 0) { 3622 nvlist_free(nv); 3623 goto nomem; 3624 } 3625 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) { 3626 nvlist_free(nv); 3627 goto nomem; 3628 } 3629 nvlist_free(nv); 3630 } 3631 3632 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3633 return (0); 3634 3635nomem: 3636 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3637 return (no_memory(zhp->zpool_hdl)); 3638} 3639 3640/* 3641 * Upgrade a ZFS pool to the latest on-disk version. 3642 */ 3643int 3644zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version) 3645{ 3646 zfs_cmd_t zc = { 0 }; 3647 libzfs_handle_t *hdl = zhp->zpool_hdl; 3648 3649 (void) strcpy(zc.zc_name, zhp->zpool_name); 3650 zc.zc_cookie = new_version; 3651 3652 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0) 3653 return (zpool_standard_error_fmt(hdl, errno, 3654 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"), 3655 zhp->zpool_name)); 3656 return (0); 3657} 3658 3659void 3660zfs_save_arguments(int argc, char **argv, char *string, int len) 3661{ 3662 (void) strlcpy(string, basename(argv[0]), len); 3663 for (int i = 1; i < argc; i++) { 3664 (void) strlcat(string, " ", len); 3665 (void) strlcat(string, argv[i], len); 3666 } 3667} 3668 3669int 3670zpool_log_history(libzfs_handle_t *hdl, const char *message) 3671{ 3672 zfs_cmd_t zc = { 0 }; 3673 nvlist_t *args; 3674 int err; 3675 3676 args = fnvlist_alloc(); 3677 fnvlist_add_string(args, "message", message); 3678 err = zcmd_write_src_nvlist(hdl, &zc, args); 3679 if (err == 0) 3680 err = ioctl(hdl->libzfs_fd, ZFS_IOC_LOG_HISTORY, &zc); 3681 nvlist_free(args); 3682 zcmd_free_nvlists(&zc); 3683 return (err); 3684} 3685 3686/* 3687 * Perform ioctl to get some command history of a pool. 3688 * 3689 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the 3690 * logical offset of the history buffer to start reading from. 3691 * 3692 * Upon return, 'off' is the next logical offset to read from and 3693 * 'len' is the actual amount of bytes read into 'buf'. 3694 */ 3695static int 3696get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len) 3697{ 3698 zfs_cmd_t zc = { 0 }; 3699 libzfs_handle_t *hdl = zhp->zpool_hdl; 3700 3701 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3702 3703 zc.zc_history = (uint64_t)(uintptr_t)buf; 3704 zc.zc_history_len = *len; 3705 zc.zc_history_offset = *off; 3706 3707 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) { 3708 switch (errno) { 3709 case EPERM: 3710 return (zfs_error_fmt(hdl, EZFS_PERM, 3711 dgettext(TEXT_DOMAIN, 3712 "cannot show history for pool '%s'"), 3713 zhp->zpool_name)); 3714 case ENOENT: 3715 return (zfs_error_fmt(hdl, EZFS_NOHISTORY, 3716 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3717 "'%s'"), zhp->zpool_name)); 3718 case ENOTSUP: 3719 return (zfs_error_fmt(hdl, EZFS_BADVERSION, 3720 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3721 "'%s', pool must be upgraded"), zhp->zpool_name)); 3722 default: 3723 return (zpool_standard_error_fmt(hdl, errno, 3724 dgettext(TEXT_DOMAIN, 3725 "cannot get history for '%s'"), zhp->zpool_name)); 3726 } 3727 } 3728 3729 *len = zc.zc_history_len; 3730 *off = zc.zc_history_offset; 3731 3732 return (0); 3733} 3734 3735/* 3736 * Process the buffer of nvlists, unpacking and storing each nvlist record 3737 * into 'records'. 'leftover' is set to the number of bytes that weren't 3738 * processed as there wasn't a complete record. 3739 */ 3740int 3741zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover, 3742 nvlist_t ***records, uint_t *numrecords) 3743{ 3744 uint64_t reclen; 3745 nvlist_t *nv; 3746 int i; 3747 3748 while (bytes_read > sizeof (reclen)) { 3749 3750 /* get length of packed record (stored as little endian) */ 3751 for (i = 0, reclen = 0; i < sizeof (reclen); i++) 3752 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i); 3753 3754 if (bytes_read < sizeof (reclen) + reclen) 3755 break; 3756 3757 /* unpack record */ 3758 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0) 3759 return (ENOMEM); 3760 bytes_read -= sizeof (reclen) + reclen; 3761 buf += sizeof (reclen) + reclen; 3762 3763 /* add record to nvlist array */ 3764 (*numrecords)++; 3765 if (ISP2(*numrecords + 1)) { 3766 *records = realloc(*records, 3767 *numrecords * 2 * sizeof (nvlist_t *)); 3768 } 3769 (*records)[*numrecords - 1] = nv; 3770 } 3771 3772 *leftover = bytes_read; 3773 return (0); 3774} 3775 3776/* from spa_history.c: spa_history_create_obj() */ 3777#define HIS_BUF_LEN_DEF (128 << 10) 3778#define HIS_BUF_LEN_MAX (1 << 30) 3779 3780/* 3781 * Retrieve the command history of a pool. 3782 */ 3783int 3784zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp) 3785{ 3786 char *buf = NULL; 3787 uint64_t bufsize = HIS_BUF_LEN_DEF; 3788 uint64_t off = 0; 3789 nvlist_t **records = NULL; 3790 uint_t numrecords = 0; 3791 int err, i; 3792 3793 if ((buf = malloc(bufsize)) == NULL) 3794 return (ENOMEM); 3795 do { 3796 uint64_t bytes_read = bufsize; 3797 uint64_t leftover; 3798 3799 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0) 3800 break; 3801 3802 /* if nothing else was read in, we're at EOF, just return */ 3803 if (bytes_read == 0) 3804 break; 3805 3806 if ((err = zpool_history_unpack(buf, bytes_read, 3807 &leftover, &records, &numrecords)) != 0) 3808 break; 3809 off -= leftover; 3810 3811 /* 3812 * If the history block is too big, double the buffer 3813 * size and try again. 3814 */ 3815 if (leftover == bytes_read) { 3816 free(buf); 3817 buf = NULL; 3818 3819 bufsize <<= 1; 3820 if ((bufsize >= HIS_BUF_LEN_MAX) || 3821 ((buf = malloc(bufsize)) == NULL)) { 3822 err = ENOMEM; 3823 break; 3824 } 3825 } 3826 3827 /* CONSTCOND */ 3828 } while (1); 3829 free(buf); 3830 3831 if (!err) { 3832 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0); 3833 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD, 3834 records, numrecords) == 0); 3835 } 3836 for (i = 0; i < numrecords; i++) 3837 nvlist_free(records[i]); 3838 free(records); 3839 3840 return (err); 3841} 3842 3843void 3844zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj, 3845 char *pathname, size_t len) 3846{ 3847 zfs_cmd_t zc = { 0 }; 3848 boolean_t mounted = B_FALSE; 3849 char *mntpnt = NULL; 3850 char dsname[MAXNAMELEN]; 3851 3852 if (dsobj == 0) { 3853 /* special case for the MOS */ 3854 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", obj); 3855 return; 3856 } 3857 3858 /* get the dataset's name */ 3859 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3860 zc.zc_obj = dsobj; 3861 if (ioctl(zhp->zpool_hdl->libzfs_fd, 3862 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) { 3863 /* just write out a path of two object numbers */ 3864 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>", 3865 dsobj, obj); 3866 return; 3867 } 3868 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname)); 3869 3870 /* find out if the dataset is mounted */ 3871 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt); 3872 3873 /* get the corrupted object's path */ 3874 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name)); 3875 zc.zc_obj = obj; 3876 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH, 3877 &zc) == 0) { 3878 if (mounted) { 3879 (void) snprintf(pathname, len, "%s%s", mntpnt, 3880 zc.zc_value); 3881 } else { 3882 (void) snprintf(pathname, len, "%s:%s", 3883 dsname, zc.zc_value); 3884 } 3885 } else { 3886 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, obj); 3887 } 3888 free(mntpnt); 3889} 3890 3891#ifdef sun 3892/* 3893 * Read the EFI label from the config, if a label does not exist then 3894 * pass back the error to the caller. If the caller has passed a non-NULL 3895 * diskaddr argument then we set it to the starting address of the EFI 3896 * partition. 3897 */ 3898static int 3899read_efi_label(nvlist_t *config, diskaddr_t *sb) 3900{ 3901 char *path; 3902 int fd; 3903 char diskname[MAXPATHLEN]; 3904 int err = -1; 3905 3906 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0) 3907 return (err); 3908 3909 (void) snprintf(diskname, sizeof (diskname), "%s%s", RDISK_ROOT, 3910 strrchr(path, '/')); 3911 if ((fd = open(diskname, O_RDONLY|O_NDELAY)) >= 0) { 3912 struct dk_gpt *vtoc; 3913 3914 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) { 3915 if (sb != NULL) 3916 *sb = vtoc->efi_parts[0].p_start; 3917 efi_free(vtoc); 3918 } 3919 (void) close(fd); 3920 } 3921 return (err); 3922} 3923 3924/* 3925 * determine where a partition starts on a disk in the current 3926 * configuration 3927 */ 3928static diskaddr_t 3929find_start_block(nvlist_t *config) 3930{ 3931 nvlist_t **child; 3932 uint_t c, children; 3933 diskaddr_t sb = MAXOFFSET_T; 3934 uint64_t wholedisk; 3935 3936 if (nvlist_lookup_nvlist_array(config, 3937 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) { 3938 if (nvlist_lookup_uint64(config, 3939 ZPOOL_CONFIG_WHOLE_DISK, 3940 &wholedisk) != 0 || !wholedisk) { 3941 return (MAXOFFSET_T); 3942 } 3943 if (read_efi_label(config, &sb) < 0) 3944 sb = MAXOFFSET_T; 3945 return (sb); 3946 } 3947 3948 for (c = 0; c < children; c++) { 3949 sb = find_start_block(child[c]); 3950 if (sb != MAXOFFSET_T) { 3951 return (sb); 3952 } 3953 } 3954 return (MAXOFFSET_T); 3955} 3956#endif /* sun */ 3957 3958/* 3959 * Label an individual disk. The name provided is the short name, 3960 * stripped of any leading /dev path. 3961 */ 3962int 3963zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name) 3964{ 3965#ifdef sun 3966 char path[MAXPATHLEN]; 3967 struct dk_gpt *vtoc; 3968 int fd; 3969 size_t resv = EFI_MIN_RESV_SIZE; 3970 uint64_t slice_size; 3971 diskaddr_t start_block; 3972 char errbuf[1024]; 3973 3974 /* prepare an error message just in case */ 3975 (void) snprintf(errbuf, sizeof (errbuf), 3976 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name); 3977 3978 if (zhp) { 3979 nvlist_t *nvroot; 3980 3981 if (zpool_is_bootable(zhp)) { 3982 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3983 "EFI labeled devices are not supported on root " 3984 "pools.")); 3985 return (zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf)); 3986 } 3987 3988 verify(nvlist_lookup_nvlist(zhp->zpool_config, 3989 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 3990 3991 if (zhp->zpool_start_block == 0) 3992 start_block = find_start_block(nvroot); 3993 else 3994 start_block = zhp->zpool_start_block; 3995 zhp->zpool_start_block = start_block; 3996 } else { 3997 /* new pool */ 3998 start_block = NEW_START_BLOCK; 3999 } 4000 4001 (void) snprintf(path, sizeof (path), "%s/%s%s", RDISK_ROOT, name, 4002 BACKUP_SLICE); 4003 4004 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 4005 /* 4006 * This shouldn't happen. We've long since verified that this 4007 * is a valid device. 4008 */ 4009 zfs_error_aux(hdl, 4010 dgettext(TEXT_DOMAIN, "unable to open device")); 4011 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 4012 } 4013 4014 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) { 4015 /* 4016 * The only way this can fail is if we run out of memory, or we 4017 * were unable to read the disk's capacity 4018 */ 4019 if (errno == ENOMEM) 4020 (void) no_memory(hdl); 4021 4022 (void) close(fd); 4023 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4024 "unable to read disk capacity"), name); 4025 4026 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 4027 } 4028 4029 slice_size = vtoc->efi_last_u_lba + 1; 4030 slice_size -= EFI_MIN_RESV_SIZE; 4031 if (start_block == MAXOFFSET_T) 4032 start_block = NEW_START_BLOCK; 4033 slice_size -= start_block; 4034 4035 vtoc->efi_parts[0].p_start = start_block; 4036 vtoc->efi_parts[0].p_size = slice_size; 4037 4038 /* 4039 * Why we use V_USR: V_BACKUP confuses users, and is considered 4040 * disposable by some EFI utilities (since EFI doesn't have a backup 4041 * slice). V_UNASSIGNED is supposed to be used only for zero size 4042 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT, 4043 * etc. were all pretty specific. V_USR is as close to reality as we 4044 * can get, in the absence of V_OTHER. 4045 */ 4046 vtoc->efi_parts[0].p_tag = V_USR; 4047 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs"); 4048 4049 vtoc->efi_parts[8].p_start = slice_size + start_block; 4050 vtoc->efi_parts[8].p_size = resv; 4051 vtoc->efi_parts[8].p_tag = V_RESERVED; 4052 4053 if (efi_write(fd, vtoc) != 0) { 4054 /* 4055 * Some block drivers (like pcata) may not support EFI 4056 * GPT labels. Print out a helpful error message dir- 4057 * ecting the user to manually label the disk and give 4058 * a specific slice. 4059 */ 4060 (void) close(fd); 4061 efi_free(vtoc); 4062 4063 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4064 "try using fdisk(1M) and then provide a specific slice")); 4065 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf)); 4066 } 4067 4068 (void) close(fd); 4069 efi_free(vtoc); 4070#endif /* sun */ 4071 return (0); 4072} 4073 4074static boolean_t 4075supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf) 4076{ 4077 char *type; 4078 nvlist_t **child; 4079 uint_t children, c; 4080 4081 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_TYPE, &type) == 0); 4082 if (strcmp(type, VDEV_TYPE_FILE) == 0 || 4083 strcmp(type, VDEV_TYPE_HOLE) == 0 || 4084 strcmp(type, VDEV_TYPE_MISSING) == 0) { 4085 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4086 "vdev type '%s' is not supported"), type); 4087 (void) zfs_error(hdl, EZFS_VDEVNOTSUP, errbuf); 4088 return (B_FALSE); 4089 } 4090 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN, 4091 &child, &children) == 0) { 4092 for (c = 0; c < children; c++) { 4093 if (!supported_dump_vdev_type(hdl, child[c], errbuf)) 4094 return (B_FALSE); 4095 } 4096 } 4097 return (B_TRUE); 4098} 4099 4100/* 4101 * Check if this zvol is allowable for use as a dump device; zero if 4102 * it is, > 0 if it isn't, < 0 if it isn't a zvol. 4103 * 4104 * Allowable storage configurations include mirrors, all raidz variants, and 4105 * pools with log, cache, and spare devices. Pools which are backed by files or 4106 * have missing/hole vdevs are not suitable. 4107 */ 4108int 4109zvol_check_dump_config(char *arg) 4110{ 4111 zpool_handle_t *zhp = NULL; 4112 nvlist_t *config, *nvroot; 4113 char *p, *volname; 4114 nvlist_t **top; 4115 uint_t toplevels; 4116 libzfs_handle_t *hdl; 4117 char errbuf[1024]; 4118 char poolname[ZPOOL_MAXNAMELEN]; 4119 int pathlen = strlen(ZVOL_FULL_DEV_DIR); 4120 int ret = 1; 4121 4122 if (strncmp(arg, ZVOL_FULL_DEV_DIR, pathlen)) { 4123 return (-1); 4124 } 4125 4126 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4127 "dump is not supported on device '%s'"), arg); 4128 4129 if ((hdl = libzfs_init()) == NULL) 4130 return (1); 4131 libzfs_print_on_error(hdl, B_TRUE); 4132 4133 volname = arg + pathlen; 4134 4135 /* check the configuration of the pool */ 4136 if ((p = strchr(volname, '/')) == NULL) { 4137 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4138 "malformed dataset name")); 4139 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 4140 return (1); 4141 } else if (p - volname >= ZFS_MAXNAMELEN) { 4142 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4143 "dataset name is too long")); 4144 (void) zfs_error(hdl, EZFS_NAMETOOLONG, errbuf); 4145 return (1); 4146 } else { 4147 (void) strncpy(poolname, volname, p - volname); 4148 poolname[p - volname] = '\0'; 4149 } 4150 4151 if ((zhp = zpool_open(hdl, poolname)) == NULL) { 4152 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4153 "could not open pool '%s'"), poolname); 4154 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 4155 goto out; 4156 } 4157 config = zpool_get_config(zhp, NULL); 4158 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 4159 &nvroot) != 0) { 4160 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4161 "could not obtain vdev configuration for '%s'"), poolname); 4162 (void) zfs_error(hdl, EZFS_INVALCONFIG, errbuf); 4163 goto out; 4164 } 4165 4166 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 4167 &top, &toplevels) == 0); 4168 4169 if (!supported_dump_vdev_type(hdl, top[0], errbuf)) { 4170 goto out; 4171 } 4172 ret = 0; 4173 4174out: 4175 if (zhp) 4176 zpool_close(zhp); 4177 libzfs_fini(hdl); 4178 return (ret); 4179} 4180