libzfs_pool.c revision 289528
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 2015 Nexenta Systems, Inc. All rights reserved. 24 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. 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 405boolean_t 406zpool_is_bootable(zpool_handle_t *zhp) 407{ 408 char bootfs[ZPOOL_MAXNAMELEN]; 409 410 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs, 411 sizeof (bootfs), NULL, B_FALSE) == 0 && strncmp(bootfs, "-", 412 sizeof (bootfs)) != 0); 413} 414 415 416/* 417 * Given an nvlist of zpool properties to be set, validate that they are 418 * correct, and parse any numeric properties (index, boolean, etc) if they are 419 * specified as strings. 420 */ 421static nvlist_t * 422zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname, 423 nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf) 424{ 425 nvpair_t *elem; 426 nvlist_t *retprops; 427 zpool_prop_t prop; 428 char *strval; 429 uint64_t intval; 430 char *slash, *check; 431 struct stat64 statbuf; 432 zpool_handle_t *zhp; 433 434 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) { 435 (void) no_memory(hdl); 436 return (NULL); 437 } 438 439 elem = NULL; 440 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 441 const char *propname = nvpair_name(elem); 442 443 prop = zpool_name_to_prop(propname); 444 if (prop == ZPROP_INVAL && zpool_prop_feature(propname)) { 445 int err; 446 char *fname = strchr(propname, '@') + 1; 447 448 err = zfeature_lookup_name(fname, NULL); 449 if (err != 0) { 450 ASSERT3U(err, ==, ENOENT); 451 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 452 "invalid feature '%s'"), fname); 453 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 454 goto error; 455 } 456 457 if (nvpair_type(elem) != DATA_TYPE_STRING) { 458 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 459 "'%s' must be a string"), propname); 460 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 461 goto error; 462 } 463 464 (void) nvpair_value_string(elem, &strval); 465 if (strcmp(strval, ZFS_FEATURE_ENABLED) != 0) { 466 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 467 "property '%s' can only be set to " 468 "'enabled'"), propname); 469 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 470 goto error; 471 } 472 473 if (nvlist_add_uint64(retprops, propname, 0) != 0) { 474 (void) no_memory(hdl); 475 goto error; 476 } 477 continue; 478 } 479 480 /* 481 * Make sure this property is valid and applies to this type. 482 */ 483 if (prop == ZPROP_INVAL) { 484 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 485 "invalid property '%s'"), propname); 486 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 487 goto error; 488 } 489 490 if (zpool_prop_readonly(prop)) { 491 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 492 "is readonly"), propname); 493 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 494 goto error; 495 } 496 497 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops, 498 &strval, &intval, errbuf) != 0) 499 goto error; 500 501 /* 502 * Perform additional checking for specific properties. 503 */ 504 switch (prop) { 505 case ZPOOL_PROP_VERSION: 506 if (intval < version || 507 !SPA_VERSION_IS_SUPPORTED(intval)) { 508 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 509 "property '%s' number %d is invalid."), 510 propname, intval); 511 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 512 goto error; 513 } 514 break; 515 516 case ZPOOL_PROP_BOOTFS: 517 if (flags.create || flags.import) { 518 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 519 "property '%s' cannot be set at creation " 520 "or import time"), propname); 521 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 522 goto error; 523 } 524 525 if (version < SPA_VERSION_BOOTFS) { 526 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 527 "pool must be upgraded to support " 528 "'%s' property"), propname); 529 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 530 goto error; 531 } 532 533 /* 534 * bootfs property value has to be a dataset name and 535 * the dataset has to be in the same pool as it sets to. 536 */ 537 if (strval[0] != '\0' && !bootfs_name_valid(poolname, 538 strval)) { 539 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 540 "is an invalid name"), strval); 541 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 542 goto error; 543 } 544 545 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) { 546 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 547 "could not open pool '%s'"), poolname); 548 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 549 goto error; 550 } 551 zpool_close(zhp); 552 break; 553 554 case ZPOOL_PROP_ALTROOT: 555 if (!flags.create && !flags.import) { 556 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 557 "property '%s' can only be set during pool " 558 "creation or import"), propname); 559 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 560 goto error; 561 } 562 563 if (strval[0] != '/') { 564 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 565 "bad alternate root '%s'"), strval); 566 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 567 goto error; 568 } 569 break; 570 571 case ZPOOL_PROP_CACHEFILE: 572 if (strval[0] == '\0') 573 break; 574 575 if (strcmp(strval, "none") == 0) 576 break; 577 578 if (strval[0] != '/') { 579 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 580 "property '%s' must be empty, an " 581 "absolute path, or 'none'"), propname); 582 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 583 goto error; 584 } 585 586 slash = strrchr(strval, '/'); 587 588 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || 589 strcmp(slash, "/..") == 0) { 590 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 591 "'%s' is not a valid file"), strval); 592 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 593 goto error; 594 } 595 596 *slash = '\0'; 597 598 if (strval[0] != '\0' && 599 (stat64(strval, &statbuf) != 0 || 600 !S_ISDIR(statbuf.st_mode))) { 601 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 602 "'%s' is not a valid directory"), 603 strval); 604 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 605 goto error; 606 } 607 608 *slash = '/'; 609 break; 610 611 case ZPOOL_PROP_COMMENT: 612 for (check = strval; *check != '\0'; check++) { 613 if (!isprint(*check)) { 614 zfs_error_aux(hdl, 615 dgettext(TEXT_DOMAIN, 616 "comment may only have printable " 617 "characters")); 618 (void) zfs_error(hdl, EZFS_BADPROP, 619 errbuf); 620 goto error; 621 } 622 } 623 if (strlen(strval) > ZPROP_MAX_COMMENT) { 624 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 625 "comment must not exceed %d characters"), 626 ZPROP_MAX_COMMENT); 627 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 628 goto error; 629 } 630 break; 631 case ZPOOL_PROP_READONLY: 632 if (!flags.import) { 633 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 634 "property '%s' can only be set at " 635 "import time"), propname); 636 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 637 goto error; 638 } 639 break; 640 } 641 } 642 643 return (retprops); 644error: 645 nvlist_free(retprops); 646 return (NULL); 647} 648 649/* 650 * Set zpool property : propname=propval. 651 */ 652int 653zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval) 654{ 655 zfs_cmd_t zc = { 0 }; 656 int ret = -1; 657 char errbuf[1024]; 658 nvlist_t *nvl = NULL; 659 nvlist_t *realprops; 660 uint64_t version; 661 prop_flags_t flags = { 0 }; 662 663 (void) snprintf(errbuf, sizeof (errbuf), 664 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 665 zhp->zpool_name); 666 667 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 668 return (no_memory(zhp->zpool_hdl)); 669 670 if (nvlist_add_string(nvl, propname, propval) != 0) { 671 nvlist_free(nvl); 672 return (no_memory(zhp->zpool_hdl)); 673 } 674 675 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 676 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl, 677 zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) { 678 nvlist_free(nvl); 679 return (-1); 680 } 681 682 nvlist_free(nvl); 683 nvl = realprops; 684 685 /* 686 * Execute the corresponding ioctl() to set this property. 687 */ 688 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 689 690 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) { 691 nvlist_free(nvl); 692 return (-1); 693 } 694 695 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc); 696 697 zcmd_free_nvlists(&zc); 698 nvlist_free(nvl); 699 700 if (ret) 701 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf); 702 else 703 (void) zpool_props_refresh(zhp); 704 705 return (ret); 706} 707 708int 709zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp) 710{ 711 libzfs_handle_t *hdl = zhp->zpool_hdl; 712 zprop_list_t *entry; 713 char buf[ZFS_MAXPROPLEN]; 714 nvlist_t *features = NULL; 715 zprop_list_t **last; 716 boolean_t firstexpand = (NULL == *plp); 717 718 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0) 719 return (-1); 720 721 last = plp; 722 while (*last != NULL) 723 last = &(*last)->pl_next; 724 725 if ((*plp)->pl_all) 726 features = zpool_get_features(zhp); 727 728 if ((*plp)->pl_all && firstexpand) { 729 for (int i = 0; i < SPA_FEATURES; i++) { 730 zprop_list_t *entry = zfs_alloc(hdl, 731 sizeof (zprop_list_t)); 732 entry->pl_prop = ZPROP_INVAL; 733 entry->pl_user_prop = zfs_asprintf(hdl, "feature@%s", 734 spa_feature_table[i].fi_uname); 735 entry->pl_width = strlen(entry->pl_user_prop); 736 entry->pl_all = B_TRUE; 737 738 *last = entry; 739 last = &entry->pl_next; 740 } 741 } 742 743 /* add any unsupported features */ 744 for (nvpair_t *nvp = nvlist_next_nvpair(features, NULL); 745 nvp != NULL; nvp = nvlist_next_nvpair(features, nvp)) { 746 char *propname; 747 boolean_t found; 748 zprop_list_t *entry; 749 750 if (zfeature_is_supported(nvpair_name(nvp))) 751 continue; 752 753 propname = zfs_asprintf(hdl, "unsupported@%s", 754 nvpair_name(nvp)); 755 756 /* 757 * Before adding the property to the list make sure that no 758 * other pool already added the same property. 759 */ 760 found = B_FALSE; 761 entry = *plp; 762 while (entry != NULL) { 763 if (entry->pl_user_prop != NULL && 764 strcmp(propname, entry->pl_user_prop) == 0) { 765 found = B_TRUE; 766 break; 767 } 768 entry = entry->pl_next; 769 } 770 if (found) { 771 free(propname); 772 continue; 773 } 774 775 entry = zfs_alloc(hdl, sizeof (zprop_list_t)); 776 entry->pl_prop = ZPROP_INVAL; 777 entry->pl_user_prop = propname; 778 entry->pl_width = strlen(entry->pl_user_prop); 779 entry->pl_all = B_TRUE; 780 781 *last = entry; 782 last = &entry->pl_next; 783 } 784 785 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 786 787 if (entry->pl_fixed) 788 continue; 789 790 if (entry->pl_prop != ZPROP_INVAL && 791 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf), 792 NULL, B_FALSE) == 0) { 793 if (strlen(buf) > entry->pl_width) 794 entry->pl_width = strlen(buf); 795 } 796 } 797 798 return (0); 799} 800 801/* 802 * Get the state for the given feature on the given ZFS pool. 803 */ 804int 805zpool_prop_get_feature(zpool_handle_t *zhp, const char *propname, char *buf, 806 size_t len) 807{ 808 uint64_t refcount; 809 boolean_t found = B_FALSE; 810 nvlist_t *features = zpool_get_features(zhp); 811 boolean_t supported; 812 const char *feature = strchr(propname, '@') + 1; 813 814 supported = zpool_prop_feature(propname); 815 ASSERT(supported || zpool_prop_unsupported(propname)); 816 817 /* 818 * Convert from feature name to feature guid. This conversion is 819 * unecessary for unsupported@... properties because they already 820 * use guids. 821 */ 822 if (supported) { 823 int ret; 824 spa_feature_t fid; 825 826 ret = zfeature_lookup_name(feature, &fid); 827 if (ret != 0) { 828 (void) strlcpy(buf, "-", len); 829 return (ENOTSUP); 830 } 831 feature = spa_feature_table[fid].fi_guid; 832 } 833 834 if (nvlist_lookup_uint64(features, feature, &refcount) == 0) 835 found = B_TRUE; 836 837 if (supported) { 838 if (!found) { 839 (void) strlcpy(buf, ZFS_FEATURE_DISABLED, len); 840 } else { 841 if (refcount == 0) 842 (void) strlcpy(buf, ZFS_FEATURE_ENABLED, len); 843 else 844 (void) strlcpy(buf, ZFS_FEATURE_ACTIVE, len); 845 } 846 } else { 847 if (found) { 848 if (refcount == 0) { 849 (void) strcpy(buf, ZFS_UNSUPPORTED_INACTIVE); 850 } else { 851 (void) strcpy(buf, ZFS_UNSUPPORTED_READONLY); 852 } 853 } else { 854 (void) strlcpy(buf, "-", len); 855 return (ENOTSUP); 856 } 857 } 858 859 return (0); 860} 861 862/* 863 * Don't start the slice at the default block of 34; many storage 864 * devices will use a stripe width of 128k, so start there instead. 865 */ 866#define NEW_START_BLOCK 256 867 868/* 869 * Validate the given pool name, optionally putting an extended error message in 870 * 'buf'. 871 */ 872boolean_t 873zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool) 874{ 875 namecheck_err_t why; 876 char what; 877 int ret; 878 879 ret = pool_namecheck(pool, &why, &what); 880 881 /* 882 * The rules for reserved pool names were extended at a later point. 883 * But we need to support users with existing pools that may now be 884 * invalid. So we only check for this expanded set of names during a 885 * create (or import), and only in userland. 886 */ 887 if (ret == 0 && !isopen && 888 (strncmp(pool, "mirror", 6) == 0 || 889 strncmp(pool, "raidz", 5) == 0 || 890 strncmp(pool, "spare", 5) == 0 || 891 strcmp(pool, "log") == 0)) { 892 if (hdl != NULL) 893 zfs_error_aux(hdl, 894 dgettext(TEXT_DOMAIN, "name is reserved")); 895 return (B_FALSE); 896 } 897 898 899 if (ret != 0) { 900 if (hdl != NULL) { 901 switch (why) { 902 case NAME_ERR_TOOLONG: 903 zfs_error_aux(hdl, 904 dgettext(TEXT_DOMAIN, "name is too long")); 905 break; 906 907 case NAME_ERR_INVALCHAR: 908 zfs_error_aux(hdl, 909 dgettext(TEXT_DOMAIN, "invalid character " 910 "'%c' in pool name"), what); 911 break; 912 913 case NAME_ERR_NOLETTER: 914 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 915 "name must begin with a letter")); 916 break; 917 918 case NAME_ERR_RESERVED: 919 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 920 "name is reserved")); 921 break; 922 923 case NAME_ERR_DISKLIKE: 924 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 925 "pool name is reserved")); 926 break; 927 928 case NAME_ERR_LEADING_SLASH: 929 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 930 "leading slash in name")); 931 break; 932 933 case NAME_ERR_EMPTY_COMPONENT: 934 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 935 "empty component in name")); 936 break; 937 938 case NAME_ERR_TRAILING_SLASH: 939 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 940 "trailing slash in name")); 941 break; 942 943 case NAME_ERR_MULTIPLE_AT: 944 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 945 "multiple '@' delimiters in name")); 946 break; 947 948 } 949 } 950 return (B_FALSE); 951 } 952 953 return (B_TRUE); 954} 955 956/* 957 * Open a handle to the given pool, even if the pool is currently in the FAULTED 958 * state. 959 */ 960zpool_handle_t * 961zpool_open_canfail(libzfs_handle_t *hdl, const char *pool) 962{ 963 zpool_handle_t *zhp; 964 boolean_t missing; 965 966 /* 967 * Make sure the pool name is valid. 968 */ 969 if (!zpool_name_valid(hdl, B_TRUE, pool)) { 970 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME, 971 dgettext(TEXT_DOMAIN, "cannot open '%s'"), 972 pool); 973 return (NULL); 974 } 975 976 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 977 return (NULL); 978 979 zhp->zpool_hdl = hdl; 980 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 981 982 if (zpool_refresh_stats(zhp, &missing) != 0) { 983 zpool_close(zhp); 984 return (NULL); 985 } 986 987 if (missing) { 988 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool")); 989 (void) zfs_error_fmt(hdl, EZFS_NOENT, 990 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool); 991 zpool_close(zhp); 992 return (NULL); 993 } 994 995 return (zhp); 996} 997 998/* 999 * Like the above, but silent on error. Used when iterating over pools (because 1000 * the configuration cache may be out of date). 1001 */ 1002int 1003zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret) 1004{ 1005 zpool_handle_t *zhp; 1006 boolean_t missing; 1007 1008 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 1009 return (-1); 1010 1011 zhp->zpool_hdl = hdl; 1012 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 1013 1014 if (zpool_refresh_stats(zhp, &missing) != 0) { 1015 zpool_close(zhp); 1016 return (-1); 1017 } 1018 1019 if (missing) { 1020 zpool_close(zhp); 1021 *ret = NULL; 1022 return (0); 1023 } 1024 1025 *ret = zhp; 1026 return (0); 1027} 1028 1029/* 1030 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted 1031 * state. 1032 */ 1033zpool_handle_t * 1034zpool_open(libzfs_handle_t *hdl, const char *pool) 1035{ 1036 zpool_handle_t *zhp; 1037 1038 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL) 1039 return (NULL); 1040 1041 if (zhp->zpool_state == POOL_STATE_UNAVAIL) { 1042 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL, 1043 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name); 1044 zpool_close(zhp); 1045 return (NULL); 1046 } 1047 1048 return (zhp); 1049} 1050 1051/* 1052 * Close the handle. Simply frees the memory associated with the handle. 1053 */ 1054void 1055zpool_close(zpool_handle_t *zhp) 1056{ 1057 if (zhp->zpool_config) 1058 nvlist_free(zhp->zpool_config); 1059 if (zhp->zpool_old_config) 1060 nvlist_free(zhp->zpool_old_config); 1061 if (zhp->zpool_props) 1062 nvlist_free(zhp->zpool_props); 1063 free(zhp); 1064} 1065 1066/* 1067 * Return the name of the pool. 1068 */ 1069const char * 1070zpool_get_name(zpool_handle_t *zhp) 1071{ 1072 return (zhp->zpool_name); 1073} 1074 1075 1076/* 1077 * Return the state of the pool (ACTIVE or UNAVAILABLE) 1078 */ 1079int 1080zpool_get_state(zpool_handle_t *zhp) 1081{ 1082 return (zhp->zpool_state); 1083} 1084 1085/* 1086 * Create the named pool, using the provided vdev list. It is assumed 1087 * that the consumer has already validated the contents of the nvlist, so we 1088 * don't have to worry about error semantics. 1089 */ 1090int 1091zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot, 1092 nvlist_t *props, nvlist_t *fsprops) 1093{ 1094 zfs_cmd_t zc = { 0 }; 1095 nvlist_t *zc_fsprops = NULL; 1096 nvlist_t *zc_props = NULL; 1097 char msg[1024]; 1098 int ret = -1; 1099 1100 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1101 "cannot create '%s'"), pool); 1102 1103 if (!zpool_name_valid(hdl, B_FALSE, pool)) 1104 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 1105 1106 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1107 return (-1); 1108 1109 if (props) { 1110 prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE }; 1111 1112 if ((zc_props = zpool_valid_proplist(hdl, pool, props, 1113 SPA_VERSION_1, flags, msg)) == NULL) { 1114 goto create_failed; 1115 } 1116 } 1117 1118 if (fsprops) { 1119 uint64_t zoned; 1120 char *zonestr; 1121 1122 zoned = ((nvlist_lookup_string(fsprops, 1123 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) && 1124 strcmp(zonestr, "on") == 0); 1125 1126 if ((zc_fsprops = zfs_valid_proplist(hdl, ZFS_TYPE_FILESYSTEM, 1127 fsprops, zoned, NULL, NULL, msg)) == NULL) { 1128 goto create_failed; 1129 } 1130 if (!zc_props && 1131 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) { 1132 goto create_failed; 1133 } 1134 if (nvlist_add_nvlist(zc_props, 1135 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) { 1136 goto create_failed; 1137 } 1138 } 1139 1140 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 1141 goto create_failed; 1142 1143 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name)); 1144 1145 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) { 1146 1147 zcmd_free_nvlists(&zc); 1148 nvlist_free(zc_props); 1149 nvlist_free(zc_fsprops); 1150 1151 switch (errno) { 1152 case EBUSY: 1153 /* 1154 * This can happen if the user has specified the same 1155 * device multiple times. We can't reliably detect this 1156 * until we try to add it and see we already have a 1157 * label. 1158 */ 1159 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1160 "one or more vdevs refer to the same device")); 1161 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1162 1163 case ERANGE: 1164 /* 1165 * This happens if the record size is smaller or larger 1166 * than the allowed size range, or not a power of 2. 1167 * 1168 * NOTE: although zfs_valid_proplist is called earlier, 1169 * this case may have slipped through since the 1170 * pool does not exist yet and it is therefore 1171 * impossible to read properties e.g. max blocksize 1172 * from the pool. 1173 */ 1174 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1175 "record size invalid")); 1176 return (zfs_error(hdl, EZFS_BADPROP, msg)); 1177 1178 case EOVERFLOW: 1179 /* 1180 * This occurs when one of the devices is below 1181 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1182 * device was the problem device since there's no 1183 * reliable way to determine device size from userland. 1184 */ 1185 { 1186 char buf[64]; 1187 1188 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1189 1190 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1191 "one or more devices is less than the " 1192 "minimum size (%s)"), buf); 1193 } 1194 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1195 1196 case ENOSPC: 1197 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1198 "one or more devices is out of space")); 1199 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1200 1201 case ENOTBLK: 1202 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1203 "cache device must be a disk or disk slice")); 1204 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1205 1206 default: 1207 return (zpool_standard_error(hdl, errno, msg)); 1208 } 1209 } 1210 1211create_failed: 1212 zcmd_free_nvlists(&zc); 1213 nvlist_free(zc_props); 1214 nvlist_free(zc_fsprops); 1215 return (ret); 1216} 1217 1218/* 1219 * Destroy the given pool. It is up to the caller to ensure that there are no 1220 * datasets left in the pool. 1221 */ 1222int 1223zpool_destroy(zpool_handle_t *zhp, const char *log_str) 1224{ 1225 zfs_cmd_t zc = { 0 }; 1226 zfs_handle_t *zfp = NULL; 1227 libzfs_handle_t *hdl = zhp->zpool_hdl; 1228 char msg[1024]; 1229 1230 if (zhp->zpool_state == POOL_STATE_ACTIVE && 1231 (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL) 1232 return (-1); 1233 1234 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1235 zc.zc_history = (uint64_t)(uintptr_t)log_str; 1236 1237 if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) { 1238 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1239 "cannot destroy '%s'"), zhp->zpool_name); 1240 1241 if (errno == EROFS) { 1242 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1243 "one or more devices is read only")); 1244 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1245 } else { 1246 (void) zpool_standard_error(hdl, errno, msg); 1247 } 1248 1249 if (zfp) 1250 zfs_close(zfp); 1251 return (-1); 1252 } 1253 1254 if (zfp) { 1255 remove_mountpoint(zfp); 1256 zfs_close(zfp); 1257 } 1258 1259 return (0); 1260} 1261 1262/* 1263 * Add the given vdevs to the pool. The caller must have already performed the 1264 * necessary verification to ensure that the vdev specification is well-formed. 1265 */ 1266int 1267zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot) 1268{ 1269 zfs_cmd_t zc = { 0 }; 1270 int ret; 1271 libzfs_handle_t *hdl = zhp->zpool_hdl; 1272 char msg[1024]; 1273 nvlist_t **spares, **l2cache; 1274 uint_t nspares, nl2cache; 1275 1276 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1277 "cannot add to '%s'"), zhp->zpool_name); 1278 1279 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1280 SPA_VERSION_SPARES && 1281 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 1282 &spares, &nspares) == 0) { 1283 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1284 "upgraded to add hot spares")); 1285 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1286 } 1287 1288 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1289 SPA_VERSION_L2CACHE && 1290 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, 1291 &l2cache, &nl2cache) == 0) { 1292 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1293 "upgraded to add cache devices")); 1294 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1295 } 1296 1297 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1298 return (-1); 1299 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1300 1301 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) { 1302 switch (errno) { 1303 case EBUSY: 1304 /* 1305 * This can happen if the user has specified the same 1306 * device multiple times. We can't reliably detect this 1307 * until we try to add it and see we already have a 1308 * label. 1309 */ 1310 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1311 "one or more vdevs refer to the same device")); 1312 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1313 break; 1314 1315 case EOVERFLOW: 1316 /* 1317 * This occurrs when one of the devices is below 1318 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1319 * device was the problem device since there's no 1320 * reliable way to determine device size from userland. 1321 */ 1322 { 1323 char buf[64]; 1324 1325 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1326 1327 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1328 "device is less than the minimum " 1329 "size (%s)"), buf); 1330 } 1331 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1332 break; 1333 1334 case ENOTSUP: 1335 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1336 "pool must be upgraded to add these vdevs")); 1337 (void) zfs_error(hdl, EZFS_BADVERSION, msg); 1338 break; 1339 1340 case EDOM: 1341 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1342 "root pool can not have multiple vdevs" 1343 " or separate logs")); 1344 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, msg); 1345 break; 1346 1347 case ENOTBLK: 1348 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1349 "cache device must be a disk or disk slice")); 1350 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1351 break; 1352 1353 default: 1354 (void) zpool_standard_error(hdl, errno, msg); 1355 } 1356 1357 ret = -1; 1358 } else { 1359 ret = 0; 1360 } 1361 1362 zcmd_free_nvlists(&zc); 1363 1364 return (ret); 1365} 1366 1367/* 1368 * Exports the pool from the system. The caller must ensure that there are no 1369 * mounted datasets in the pool. 1370 */ 1371static int 1372zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce, 1373 const char *log_str) 1374{ 1375 zfs_cmd_t zc = { 0 }; 1376 char msg[1024]; 1377 1378 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1379 "cannot export '%s'"), zhp->zpool_name); 1380 1381 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1382 zc.zc_cookie = force; 1383 zc.zc_guid = hardforce; 1384 zc.zc_history = (uint64_t)(uintptr_t)log_str; 1385 1386 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) { 1387 switch (errno) { 1388 case EXDEV: 1389 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN, 1390 "use '-f' to override the following errors:\n" 1391 "'%s' has an active shared spare which could be" 1392 " used by other pools once '%s' is exported."), 1393 zhp->zpool_name, zhp->zpool_name); 1394 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE, 1395 msg)); 1396 default: 1397 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno, 1398 msg)); 1399 } 1400 } 1401 1402 return (0); 1403} 1404 1405int 1406zpool_export(zpool_handle_t *zhp, boolean_t force, const char *log_str) 1407{ 1408 return (zpool_export_common(zhp, force, B_FALSE, log_str)); 1409} 1410 1411int 1412zpool_export_force(zpool_handle_t *zhp, const char *log_str) 1413{ 1414 return (zpool_export_common(zhp, B_TRUE, B_TRUE, log_str)); 1415} 1416 1417static void 1418zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun, 1419 nvlist_t *config) 1420{ 1421 nvlist_t *nv = NULL; 1422 uint64_t rewindto; 1423 int64_t loss = -1; 1424 struct tm t; 1425 char timestr[128]; 1426 1427 if (!hdl->libzfs_printerr || config == NULL) 1428 return; 1429 1430 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 || 1431 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0) { 1432 return; 1433 } 1434 1435 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1436 return; 1437 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss); 1438 1439 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1440 strftime(timestr, 128, 0, &t) != 0) { 1441 if (dryrun) { 1442 (void) printf(dgettext(TEXT_DOMAIN, 1443 "Would be able to return %s " 1444 "to its state as of %s.\n"), 1445 name, timestr); 1446 } else { 1447 (void) printf(dgettext(TEXT_DOMAIN, 1448 "Pool %s returned to its state as of %s.\n"), 1449 name, timestr); 1450 } 1451 if (loss > 120) { 1452 (void) printf(dgettext(TEXT_DOMAIN, 1453 "%s approximately %lld "), 1454 dryrun ? "Would discard" : "Discarded", 1455 (loss + 30) / 60); 1456 (void) printf(dgettext(TEXT_DOMAIN, 1457 "minutes of transactions.\n")); 1458 } else if (loss > 0) { 1459 (void) printf(dgettext(TEXT_DOMAIN, 1460 "%s approximately %lld "), 1461 dryrun ? "Would discard" : "Discarded", loss); 1462 (void) printf(dgettext(TEXT_DOMAIN, 1463 "seconds of transactions.\n")); 1464 } 1465 } 1466} 1467 1468void 1469zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason, 1470 nvlist_t *config) 1471{ 1472 nvlist_t *nv = NULL; 1473 int64_t loss = -1; 1474 uint64_t edata = UINT64_MAX; 1475 uint64_t rewindto; 1476 struct tm t; 1477 char timestr[128]; 1478 1479 if (!hdl->libzfs_printerr) 1480 return; 1481 1482 if (reason >= 0) 1483 (void) printf(dgettext(TEXT_DOMAIN, "action: ")); 1484 else 1485 (void) printf(dgettext(TEXT_DOMAIN, "\t")); 1486 1487 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */ 1488 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 || 1489 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0 || 1490 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1491 goto no_info; 1492 1493 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss); 1494 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS, 1495 &edata); 1496 1497 (void) printf(dgettext(TEXT_DOMAIN, 1498 "Recovery is possible, but will result in some data loss.\n")); 1499 1500 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1501 strftime(timestr, 128, 0, &t) != 0) { 1502 (void) printf(dgettext(TEXT_DOMAIN, 1503 "\tReturning the pool to its state as of %s\n" 1504 "\tshould correct the problem. "), 1505 timestr); 1506 } else { 1507 (void) printf(dgettext(TEXT_DOMAIN, 1508 "\tReverting the pool to an earlier state " 1509 "should correct the problem.\n\t")); 1510 } 1511 1512 if (loss > 120) { 1513 (void) printf(dgettext(TEXT_DOMAIN, 1514 "Approximately %lld minutes of data\n" 1515 "\tmust be discarded, irreversibly. "), (loss + 30) / 60); 1516 } else if (loss > 0) { 1517 (void) printf(dgettext(TEXT_DOMAIN, 1518 "Approximately %lld seconds of data\n" 1519 "\tmust be discarded, irreversibly. "), loss); 1520 } 1521 if (edata != 0 && edata != UINT64_MAX) { 1522 if (edata == 1) { 1523 (void) printf(dgettext(TEXT_DOMAIN, 1524 "After rewind, at least\n" 1525 "\tone persistent user-data error will remain. ")); 1526 } else { 1527 (void) printf(dgettext(TEXT_DOMAIN, 1528 "After rewind, several\n" 1529 "\tpersistent user-data errors will remain. ")); 1530 } 1531 } 1532 (void) printf(dgettext(TEXT_DOMAIN, 1533 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "), 1534 reason >= 0 ? "clear" : "import", name); 1535 1536 (void) printf(dgettext(TEXT_DOMAIN, 1537 "A scrub of the pool\n" 1538 "\tis strongly recommended after recovery.\n")); 1539 return; 1540 1541no_info: 1542 (void) printf(dgettext(TEXT_DOMAIN, 1543 "Destroy and re-create the pool from\n\ta backup source.\n")); 1544} 1545 1546/* 1547 * zpool_import() is a contracted interface. Should be kept the same 1548 * if possible. 1549 * 1550 * Applications should use zpool_import_props() to import a pool with 1551 * new properties value to be set. 1552 */ 1553int 1554zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1555 char *altroot) 1556{ 1557 nvlist_t *props = NULL; 1558 int ret; 1559 1560 if (altroot != NULL) { 1561 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 1562 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1563 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1564 newname)); 1565 } 1566 1567 if (nvlist_add_string(props, 1568 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 || 1569 nvlist_add_string(props, 1570 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) { 1571 nvlist_free(props); 1572 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1573 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1574 newname)); 1575 } 1576 } 1577 1578 ret = zpool_import_props(hdl, config, newname, props, 1579 ZFS_IMPORT_NORMAL); 1580 if (props) 1581 nvlist_free(props); 1582 return (ret); 1583} 1584 1585static void 1586print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv, 1587 int indent) 1588{ 1589 nvlist_t **child; 1590 uint_t c, children; 1591 char *vname; 1592 uint64_t is_log = 0; 1593 1594 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, 1595 &is_log); 1596 1597 if (name != NULL) 1598 (void) printf("\t%*s%s%s\n", indent, "", name, 1599 is_log ? " [log]" : ""); 1600 1601 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 1602 &child, &children) != 0) 1603 return; 1604 1605 for (c = 0; c < children; c++) { 1606 vname = zpool_vdev_name(hdl, NULL, child[c], B_TRUE); 1607 print_vdev_tree(hdl, vname, child[c], indent + 2); 1608 free(vname); 1609 } 1610} 1611 1612void 1613zpool_print_unsup_feat(nvlist_t *config) 1614{ 1615 nvlist_t *nvinfo, *unsup_feat; 1616 1617 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 1618 0); 1619 verify(nvlist_lookup_nvlist(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT, 1620 &unsup_feat) == 0); 1621 1622 for (nvpair_t *nvp = nvlist_next_nvpair(unsup_feat, NULL); nvp != NULL; 1623 nvp = nvlist_next_nvpair(unsup_feat, nvp)) { 1624 char *desc; 1625 1626 verify(nvpair_type(nvp) == DATA_TYPE_STRING); 1627 verify(nvpair_value_string(nvp, &desc) == 0); 1628 1629 if (strlen(desc) > 0) 1630 (void) printf("\t%s (%s)\n", nvpair_name(nvp), desc); 1631 else 1632 (void) printf("\t%s\n", nvpair_name(nvp)); 1633 } 1634} 1635 1636/* 1637 * Import the given pool using the known configuration and a list of 1638 * properties to be set. The configuration should have come from 1639 * zpool_find_import(). The 'newname' parameters control whether the pool 1640 * is imported with a different name. 1641 */ 1642int 1643zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1644 nvlist_t *props, int flags) 1645{ 1646 zfs_cmd_t zc = { 0 }; 1647 zpool_rewind_policy_t policy; 1648 nvlist_t *nv = NULL; 1649 nvlist_t *nvinfo = NULL; 1650 nvlist_t *missing = NULL; 1651 char *thename; 1652 char *origname; 1653 int ret; 1654 int error = 0; 1655 char errbuf[1024]; 1656 1657 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 1658 &origname) == 0); 1659 1660 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1661 "cannot import pool '%s'"), origname); 1662 1663 if (newname != NULL) { 1664 if (!zpool_name_valid(hdl, B_FALSE, newname)) 1665 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME, 1666 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1667 newname)); 1668 thename = (char *)newname; 1669 } else { 1670 thename = origname; 1671 } 1672 1673 if (props != NULL) { 1674 uint64_t version; 1675 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 1676 1677 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, 1678 &version) == 0); 1679 1680 if ((props = zpool_valid_proplist(hdl, origname, 1681 props, version, flags, errbuf)) == NULL) 1682 return (-1); 1683 if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { 1684 nvlist_free(props); 1685 return (-1); 1686 } 1687 nvlist_free(props); 1688 } 1689 1690 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name)); 1691 1692 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, 1693 &zc.zc_guid) == 0); 1694 1695 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) { 1696 zcmd_free_nvlists(&zc); 1697 return (-1); 1698 } 1699 if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) { 1700 zcmd_free_nvlists(&zc); 1701 return (-1); 1702 } 1703 1704 zc.zc_cookie = flags; 1705 while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 && 1706 errno == ENOMEM) { 1707 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 1708 zcmd_free_nvlists(&zc); 1709 return (-1); 1710 } 1711 } 1712 if (ret != 0) 1713 error = errno; 1714 1715 (void) zcmd_read_dst_nvlist(hdl, &zc, &nv); 1716 1717 zcmd_free_nvlists(&zc); 1718 1719 zpool_get_rewind_policy(config, &policy); 1720 1721 if (error) { 1722 char desc[1024]; 1723 1724 /* 1725 * Dry-run failed, but we print out what success 1726 * looks like if we found a best txg 1727 */ 1728 if (policy.zrp_request & ZPOOL_TRY_REWIND) { 1729 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1730 B_TRUE, nv); 1731 nvlist_free(nv); 1732 return (-1); 1733 } 1734 1735 if (newname == NULL) 1736 (void) snprintf(desc, sizeof (desc), 1737 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1738 thename); 1739 else 1740 (void) snprintf(desc, sizeof (desc), 1741 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"), 1742 origname, thename); 1743 1744 switch (error) { 1745 case ENOTSUP: 1746 if (nv != NULL && nvlist_lookup_nvlist(nv, 1747 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 && 1748 nvlist_exists(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT)) { 1749 (void) printf(dgettext(TEXT_DOMAIN, "This " 1750 "pool uses the following feature(s) not " 1751 "supported by this system:\n")); 1752 zpool_print_unsup_feat(nv); 1753 if (nvlist_exists(nvinfo, 1754 ZPOOL_CONFIG_CAN_RDONLY)) { 1755 (void) printf(dgettext(TEXT_DOMAIN, 1756 "All unsupported features are only " 1757 "required for writing to the pool." 1758 "\nThe pool can be imported using " 1759 "'-o readonly=on'.\n")); 1760 } 1761 } 1762 /* 1763 * Unsupported version. 1764 */ 1765 (void) zfs_error(hdl, EZFS_BADVERSION, desc); 1766 break; 1767 1768 case EINVAL: 1769 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc); 1770 break; 1771 1772 case EROFS: 1773 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1774 "one or more devices is read only")); 1775 (void) zfs_error(hdl, EZFS_BADDEV, desc); 1776 break; 1777 1778 case ENXIO: 1779 if (nv && nvlist_lookup_nvlist(nv, 1780 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 && 1781 nvlist_lookup_nvlist(nvinfo, 1782 ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) { 1783 (void) printf(dgettext(TEXT_DOMAIN, 1784 "The devices below are missing, use " 1785 "'-m' to import the pool anyway:\n")); 1786 print_vdev_tree(hdl, NULL, missing, 2); 1787 (void) printf("\n"); 1788 } 1789 (void) zpool_standard_error(hdl, error, desc); 1790 break; 1791 1792 case EEXIST: 1793 (void) zpool_standard_error(hdl, error, desc); 1794 break; 1795 1796 default: 1797 (void) zpool_standard_error(hdl, error, desc); 1798 zpool_explain_recover(hdl, 1799 newname ? origname : thename, -error, nv); 1800 break; 1801 } 1802 1803 nvlist_free(nv); 1804 ret = -1; 1805 } else { 1806 zpool_handle_t *zhp; 1807 1808 /* 1809 * This should never fail, but play it safe anyway. 1810 */ 1811 if (zpool_open_silent(hdl, thename, &zhp) != 0) 1812 ret = -1; 1813 else if (zhp != NULL) 1814 zpool_close(zhp); 1815 if (policy.zrp_request & 1816 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 1817 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1818 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv); 1819 } 1820 nvlist_free(nv); 1821 return (0); 1822 } 1823 1824 return (ret); 1825} 1826 1827/* 1828 * Scan the pool. 1829 */ 1830int 1831zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func) 1832{ 1833 zfs_cmd_t zc = { 0 }; 1834 char msg[1024]; 1835 libzfs_handle_t *hdl = zhp->zpool_hdl; 1836 1837 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1838 zc.zc_cookie = func; 1839 1840 if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 || 1841 (errno == ENOENT && func != POOL_SCAN_NONE)) 1842 return (0); 1843 1844 if (func == POOL_SCAN_SCRUB) { 1845 (void) snprintf(msg, sizeof (msg), 1846 dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name); 1847 } else if (func == POOL_SCAN_NONE) { 1848 (void) snprintf(msg, sizeof (msg), 1849 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"), 1850 zc.zc_name); 1851 } else { 1852 assert(!"unexpected result"); 1853 } 1854 1855 if (errno == EBUSY) { 1856 nvlist_t *nvroot; 1857 pool_scan_stat_t *ps = NULL; 1858 uint_t psc; 1859 1860 verify(nvlist_lookup_nvlist(zhp->zpool_config, 1861 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 1862 (void) nvlist_lookup_uint64_array(nvroot, 1863 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc); 1864 if (ps && ps->pss_func == POOL_SCAN_SCRUB) 1865 return (zfs_error(hdl, EZFS_SCRUBBING, msg)); 1866 else 1867 return (zfs_error(hdl, EZFS_RESILVERING, msg)); 1868 } else if (errno == ENOENT) { 1869 return (zfs_error(hdl, EZFS_NO_SCRUB, msg)); 1870 } else { 1871 return (zpool_standard_error(hdl, errno, msg)); 1872 } 1873} 1874 1875#ifdef illumos 1876/* 1877 * This provides a very minimal check whether a given string is likely a 1878 * c#t#d# style string. Users of this are expected to do their own 1879 * verification of the s# part. 1880 */ 1881#define CTD_CHECK(str) (str && str[0] == 'c' && isdigit(str[1])) 1882 1883/* 1884 * More elaborate version for ones which may start with "/dev/dsk/" 1885 * and the like. 1886 */ 1887static int 1888ctd_check_path(char *str) { 1889 /* 1890 * If it starts with a slash, check the last component. 1891 */ 1892 if (str && str[0] == '/') { 1893 char *tmp = strrchr(str, '/'); 1894 1895 /* 1896 * If it ends in "/old", check the second-to-last 1897 * component of the string instead. 1898 */ 1899 if (tmp != str && strcmp(tmp, "/old") == 0) { 1900 for (tmp--; *tmp != '/'; tmp--) 1901 ; 1902 } 1903 str = tmp + 1; 1904 } 1905 return (CTD_CHECK(str)); 1906} 1907#endif 1908 1909/* 1910 * Find a vdev that matches the search criteria specified. We use the 1911 * the nvpair name to determine how we should look for the device. 1912 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL 1913 * spare; but FALSE if its an INUSE spare. 1914 */ 1915static nvlist_t * 1916vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare, 1917 boolean_t *l2cache, boolean_t *log) 1918{ 1919 uint_t c, children; 1920 nvlist_t **child; 1921 nvlist_t *ret; 1922 uint64_t is_log; 1923 char *srchkey; 1924 nvpair_t *pair = nvlist_next_nvpair(search, NULL); 1925 1926 /* Nothing to look for */ 1927 if (search == NULL || pair == NULL) 1928 return (NULL); 1929 1930 /* Obtain the key we will use to search */ 1931 srchkey = nvpair_name(pair); 1932 1933 switch (nvpair_type(pair)) { 1934 case DATA_TYPE_UINT64: 1935 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) { 1936 uint64_t srchval, theguid; 1937 1938 verify(nvpair_value_uint64(pair, &srchval) == 0); 1939 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 1940 &theguid) == 0); 1941 if (theguid == srchval) 1942 return (nv); 1943 } 1944 break; 1945 1946 case DATA_TYPE_STRING: { 1947 char *srchval, *val; 1948 1949 verify(nvpair_value_string(pair, &srchval) == 0); 1950 if (nvlist_lookup_string(nv, srchkey, &val) != 0) 1951 break; 1952 1953 /* 1954 * Search for the requested value. Special cases: 1955 * 1956 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in 1957 * "s0" or "s0/old". The "s0" part is hidden from the user, 1958 * but included in the string, so this matches around it. 1959 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE). 1960 * 1961 * Otherwise, all other searches are simple string compares. 1962 */ 1963#ifdef illumos 1964 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 && 1965 ctd_check_path(val)) { 1966 uint64_t wholedisk = 0; 1967 1968 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 1969 &wholedisk); 1970 if (wholedisk) { 1971 int slen = strlen(srchval); 1972 int vlen = strlen(val); 1973 1974 if (slen != vlen - 2) 1975 break; 1976 1977 /* 1978 * make_leaf_vdev() should only set 1979 * wholedisk for ZPOOL_CONFIG_PATHs which 1980 * will include "/dev/dsk/", giving plenty of 1981 * room for the indices used next. 1982 */ 1983 ASSERT(vlen >= 6); 1984 1985 /* 1986 * strings identical except trailing "s0" 1987 */ 1988 if (strcmp(&val[vlen - 2], "s0") == 0 && 1989 strncmp(srchval, val, slen) == 0) 1990 return (nv); 1991 1992 /* 1993 * strings identical except trailing "s0/old" 1994 */ 1995 if (strcmp(&val[vlen - 6], "s0/old") == 0 && 1996 strcmp(&srchval[slen - 4], "/old") == 0 && 1997 strncmp(srchval, val, slen - 4) == 0) 1998 return (nv); 1999 2000 break; 2001 } 2002 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2003#else 2004 if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2005#endif 2006 char *type, *idx, *end, *p; 2007 uint64_t id, vdev_id; 2008 2009 /* 2010 * Determine our vdev type, keeping in mind 2011 * that the srchval is composed of a type and 2012 * vdev id pair (i.e. mirror-4). 2013 */ 2014 if ((type = strdup(srchval)) == NULL) 2015 return (NULL); 2016 2017 if ((p = strrchr(type, '-')) == NULL) { 2018 free(type); 2019 break; 2020 } 2021 idx = p + 1; 2022 *p = '\0'; 2023 2024 /* 2025 * If the types don't match then keep looking. 2026 */ 2027 if (strncmp(val, type, strlen(val)) != 0) { 2028 free(type); 2029 break; 2030 } 2031 2032 verify(strncmp(type, VDEV_TYPE_RAIDZ, 2033 strlen(VDEV_TYPE_RAIDZ)) == 0 || 2034 strncmp(type, VDEV_TYPE_MIRROR, 2035 strlen(VDEV_TYPE_MIRROR)) == 0); 2036 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 2037 &id) == 0); 2038 2039 errno = 0; 2040 vdev_id = strtoull(idx, &end, 10); 2041 2042 free(type); 2043 if (errno != 0) 2044 return (NULL); 2045 2046 /* 2047 * Now verify that we have the correct vdev id. 2048 */ 2049 if (vdev_id == id) 2050 return (nv); 2051 } 2052 2053 /* 2054 * Common case 2055 */ 2056 if (strcmp(srchval, val) == 0) 2057 return (nv); 2058 break; 2059 } 2060 2061 default: 2062 break; 2063 } 2064 2065 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 2066 &child, &children) != 0) 2067 return (NULL); 2068 2069 for (c = 0; c < children; c++) { 2070 if ((ret = vdev_to_nvlist_iter(child[c], search, 2071 avail_spare, l2cache, NULL)) != NULL) { 2072 /* 2073 * The 'is_log' value is only set for the toplevel 2074 * vdev, not the leaf vdevs. So we always lookup the 2075 * log device from the root of the vdev tree (where 2076 * 'log' is non-NULL). 2077 */ 2078 if (log != NULL && 2079 nvlist_lookup_uint64(child[c], 2080 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 && 2081 is_log) { 2082 *log = B_TRUE; 2083 } 2084 return (ret); 2085 } 2086 } 2087 2088 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, 2089 &child, &children) == 0) { 2090 for (c = 0; c < children; c++) { 2091 if ((ret = vdev_to_nvlist_iter(child[c], search, 2092 avail_spare, l2cache, NULL)) != NULL) { 2093 *avail_spare = B_TRUE; 2094 return (ret); 2095 } 2096 } 2097 } 2098 2099 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, 2100 &child, &children) == 0) { 2101 for (c = 0; c < children; c++) { 2102 if ((ret = vdev_to_nvlist_iter(child[c], search, 2103 avail_spare, l2cache, NULL)) != NULL) { 2104 *l2cache = B_TRUE; 2105 return (ret); 2106 } 2107 } 2108 } 2109 2110 return (NULL); 2111} 2112 2113/* 2114 * Given a physical path (minus the "/devices" prefix), find the 2115 * associated vdev. 2116 */ 2117nvlist_t * 2118zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath, 2119 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log) 2120{ 2121 nvlist_t *search, *nvroot, *ret; 2122 2123 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2124 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0); 2125 2126 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2127 &nvroot) == 0); 2128 2129 *avail_spare = B_FALSE; 2130 *l2cache = B_FALSE; 2131 if (log != NULL) 2132 *log = B_FALSE; 2133 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2134 nvlist_free(search); 2135 2136 return (ret); 2137} 2138 2139/* 2140 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz). 2141 */ 2142boolean_t 2143zpool_vdev_is_interior(const char *name) 2144{ 2145 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 || 2146 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0) 2147 return (B_TRUE); 2148 return (B_FALSE); 2149} 2150 2151nvlist_t * 2152zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare, 2153 boolean_t *l2cache, boolean_t *log) 2154{ 2155 char buf[MAXPATHLEN]; 2156 char *end; 2157 nvlist_t *nvroot, *search, *ret; 2158 uint64_t guid; 2159 2160 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2161 2162 guid = strtoull(path, &end, 10); 2163 if (guid != 0 && *end == '\0') { 2164 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0); 2165 } else if (zpool_vdev_is_interior(path)) { 2166 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0); 2167 } else if (path[0] != '/') { 2168 (void) snprintf(buf, sizeof (buf), "%s%s", _PATH_DEV, path); 2169 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0); 2170 } else { 2171 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0); 2172 } 2173 2174 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2175 &nvroot) == 0); 2176 2177 *avail_spare = B_FALSE; 2178 *l2cache = B_FALSE; 2179 if (log != NULL) 2180 *log = B_FALSE; 2181 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2182 nvlist_free(search); 2183 2184 return (ret); 2185} 2186 2187static int 2188vdev_online(nvlist_t *nv) 2189{ 2190 uint64_t ival; 2191 2192 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 || 2193 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 || 2194 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0) 2195 return (0); 2196 2197 return (1); 2198} 2199 2200/* 2201 * Helper function for zpool_get_physpaths(). 2202 */ 2203static int 2204vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size, 2205 size_t *bytes_written) 2206{ 2207 size_t bytes_left, pos, rsz; 2208 char *tmppath; 2209 const char *format; 2210 2211 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH, 2212 &tmppath) != 0) 2213 return (EZFS_NODEVICE); 2214 2215 pos = *bytes_written; 2216 bytes_left = physpath_size - pos; 2217 format = (pos == 0) ? "%s" : " %s"; 2218 2219 rsz = snprintf(physpath + pos, bytes_left, format, tmppath); 2220 *bytes_written += rsz; 2221 2222 if (rsz >= bytes_left) { 2223 /* if physpath was not copied properly, clear it */ 2224 if (bytes_left != 0) { 2225 physpath[pos] = 0; 2226 } 2227 return (EZFS_NOSPC); 2228 } 2229 return (0); 2230} 2231 2232static int 2233vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size, 2234 size_t *rsz, boolean_t is_spare) 2235{ 2236 char *type; 2237 int ret; 2238 2239 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) 2240 return (EZFS_INVALCONFIG); 2241 2242 if (strcmp(type, VDEV_TYPE_DISK) == 0) { 2243 /* 2244 * An active spare device has ZPOOL_CONFIG_IS_SPARE set. 2245 * For a spare vdev, we only want to boot from the active 2246 * spare device. 2247 */ 2248 if (is_spare) { 2249 uint64_t spare = 0; 2250 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 2251 &spare); 2252 if (!spare) 2253 return (EZFS_INVALCONFIG); 2254 } 2255 2256 if (vdev_online(nv)) { 2257 if ((ret = vdev_get_one_physpath(nv, physpath, 2258 phypath_size, rsz)) != 0) 2259 return (ret); 2260 } 2261 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 || 2262 strcmp(type, VDEV_TYPE_REPLACING) == 0 || 2263 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) { 2264 nvlist_t **child; 2265 uint_t count; 2266 int i, ret; 2267 2268 if (nvlist_lookup_nvlist_array(nv, 2269 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0) 2270 return (EZFS_INVALCONFIG); 2271 2272 for (i = 0; i < count; i++) { 2273 ret = vdev_get_physpaths(child[i], physpath, 2274 phypath_size, rsz, is_spare); 2275 if (ret == EZFS_NOSPC) 2276 return (ret); 2277 } 2278 } 2279 2280 return (EZFS_POOL_INVALARG); 2281} 2282 2283/* 2284 * Get phys_path for a root pool config. 2285 * Return 0 on success; non-zero on failure. 2286 */ 2287static int 2288zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size) 2289{ 2290 size_t rsz; 2291 nvlist_t *vdev_root; 2292 nvlist_t **child; 2293 uint_t count; 2294 char *type; 2295 2296 rsz = 0; 2297 2298 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2299 &vdev_root) != 0) 2300 return (EZFS_INVALCONFIG); 2301 2302 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 || 2303 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN, 2304 &child, &count) != 0) 2305 return (EZFS_INVALCONFIG); 2306 2307 /* 2308 * root pool can only have a single top-level vdev. 2309 */ 2310 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1) 2311 return (EZFS_POOL_INVALARG); 2312 2313 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz, 2314 B_FALSE); 2315 2316 /* No online devices */ 2317 if (rsz == 0) 2318 return (EZFS_NODEVICE); 2319 2320 return (0); 2321} 2322 2323/* 2324 * Get phys_path for a root pool 2325 * Return 0 on success; non-zero on failure. 2326 */ 2327int 2328zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size) 2329{ 2330 return (zpool_get_config_physpath(zhp->zpool_config, physpath, 2331 phypath_size)); 2332} 2333 2334/* 2335 * If the device has being dynamically expanded then we need to relabel 2336 * the disk to use the new unallocated space. 2337 */ 2338static int 2339zpool_relabel_disk(libzfs_handle_t *hdl, const char *name) 2340{ 2341#ifdef illumos 2342 char path[MAXPATHLEN]; 2343 char errbuf[1024]; 2344 int fd, error; 2345 int (*_efi_use_whole_disk)(int); 2346 2347 if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT, 2348 "efi_use_whole_disk")) == NULL) 2349 return (-1); 2350 2351 (void) snprintf(path, sizeof (path), "%s/%s", RDISK_ROOT, name); 2352 2353 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 2354 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2355 "relabel '%s': unable to open device"), name); 2356 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 2357 } 2358 2359 /* 2360 * It's possible that we might encounter an error if the device 2361 * does not have any unallocated space left. If so, we simply 2362 * ignore that error and continue on. 2363 */ 2364 error = _efi_use_whole_disk(fd); 2365 (void) close(fd); 2366 if (error && error != VT_ENOSPC) { 2367 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2368 "relabel '%s': unable to read disk capacity"), name); 2369 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 2370 } 2371#endif /* illumos */ 2372 return (0); 2373} 2374 2375/* 2376 * Bring the specified vdev online. The 'flags' parameter is a set of the 2377 * ZFS_ONLINE_* flags. 2378 */ 2379int 2380zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags, 2381 vdev_state_t *newstate) 2382{ 2383 zfs_cmd_t zc = { 0 }; 2384 char msg[1024]; 2385 nvlist_t *tgt; 2386 boolean_t avail_spare, l2cache, islog; 2387 libzfs_handle_t *hdl = zhp->zpool_hdl; 2388 2389 if (flags & ZFS_ONLINE_EXPAND) { 2390 (void) snprintf(msg, sizeof (msg), 2391 dgettext(TEXT_DOMAIN, "cannot expand %s"), path); 2392 } else { 2393 (void) snprintf(msg, sizeof (msg), 2394 dgettext(TEXT_DOMAIN, "cannot online %s"), path); 2395 } 2396 2397 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2398 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2399 &islog)) == NULL) 2400 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2401 2402 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2403 2404 if (avail_spare) 2405 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2406 2407 if (flags & ZFS_ONLINE_EXPAND || 2408 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) { 2409 char *pathname = NULL; 2410 uint64_t wholedisk = 0; 2411 2412 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK, 2413 &wholedisk); 2414 verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH, 2415 &pathname) == 0); 2416 2417 /* 2418 * XXX - L2ARC 1.0 devices can't support expansion. 2419 */ 2420 if (l2cache) { 2421 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2422 "cannot expand cache devices")); 2423 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg)); 2424 } 2425 2426 if (wholedisk) { 2427 pathname += strlen(DISK_ROOT) + 1; 2428 (void) zpool_relabel_disk(hdl, pathname); 2429 } 2430 } 2431 2432 zc.zc_cookie = VDEV_STATE_ONLINE; 2433 zc.zc_obj = flags; 2434 2435 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) { 2436 if (errno == EINVAL) { 2437 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split " 2438 "from this pool into a new one. Use '%s' " 2439 "instead"), "zpool detach"); 2440 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg)); 2441 } 2442 return (zpool_standard_error(hdl, errno, msg)); 2443 } 2444 2445 *newstate = zc.zc_cookie; 2446 return (0); 2447} 2448 2449/* 2450 * Take the specified vdev offline 2451 */ 2452int 2453zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp) 2454{ 2455 zfs_cmd_t zc = { 0 }; 2456 char msg[1024]; 2457 nvlist_t *tgt; 2458 boolean_t avail_spare, l2cache; 2459 libzfs_handle_t *hdl = zhp->zpool_hdl; 2460 2461 (void) snprintf(msg, sizeof (msg), 2462 dgettext(TEXT_DOMAIN, "cannot offline %s"), path); 2463 2464 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2465 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2466 NULL)) == NULL) 2467 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2468 2469 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2470 2471 if (avail_spare) 2472 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2473 2474 zc.zc_cookie = VDEV_STATE_OFFLINE; 2475 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0; 2476 2477 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2478 return (0); 2479 2480 switch (errno) { 2481 case EBUSY: 2482 2483 /* 2484 * There are no other replicas of this device. 2485 */ 2486 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2487 2488 case EEXIST: 2489 /* 2490 * The log device has unplayed logs 2491 */ 2492 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg)); 2493 2494 default: 2495 return (zpool_standard_error(hdl, errno, msg)); 2496 } 2497} 2498 2499/* 2500 * Mark the given vdev faulted. 2501 */ 2502int 2503zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2504{ 2505 zfs_cmd_t zc = { 0 }; 2506 char msg[1024]; 2507 libzfs_handle_t *hdl = zhp->zpool_hdl; 2508 2509 (void) snprintf(msg, sizeof (msg), 2510 dgettext(TEXT_DOMAIN, "cannot fault %llu"), guid); 2511 2512 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2513 zc.zc_guid = guid; 2514 zc.zc_cookie = VDEV_STATE_FAULTED; 2515 zc.zc_obj = aux; 2516 2517 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2518 return (0); 2519 2520 switch (errno) { 2521 case EBUSY: 2522 2523 /* 2524 * There are no other replicas of this device. 2525 */ 2526 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2527 2528 default: 2529 return (zpool_standard_error(hdl, errno, msg)); 2530 } 2531 2532} 2533 2534/* 2535 * Mark the given vdev degraded. 2536 */ 2537int 2538zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2539{ 2540 zfs_cmd_t zc = { 0 }; 2541 char msg[1024]; 2542 libzfs_handle_t *hdl = zhp->zpool_hdl; 2543 2544 (void) snprintf(msg, sizeof (msg), 2545 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), guid); 2546 2547 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2548 zc.zc_guid = guid; 2549 zc.zc_cookie = VDEV_STATE_DEGRADED; 2550 zc.zc_obj = aux; 2551 2552 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2553 return (0); 2554 2555 return (zpool_standard_error(hdl, errno, msg)); 2556} 2557 2558/* 2559 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as 2560 * a hot spare. 2561 */ 2562static boolean_t 2563is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which) 2564{ 2565 nvlist_t **child; 2566 uint_t c, children; 2567 char *type; 2568 2569 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child, 2570 &children) == 0) { 2571 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE, 2572 &type) == 0); 2573 2574 if (strcmp(type, VDEV_TYPE_SPARE) == 0 && 2575 children == 2 && child[which] == tgt) 2576 return (B_TRUE); 2577 2578 for (c = 0; c < children; c++) 2579 if (is_replacing_spare(child[c], tgt, which)) 2580 return (B_TRUE); 2581 } 2582 2583 return (B_FALSE); 2584} 2585 2586/* 2587 * Attach new_disk (fully described by nvroot) to old_disk. 2588 * If 'replacing' is specified, the new disk will replace the old one. 2589 */ 2590int 2591zpool_vdev_attach(zpool_handle_t *zhp, 2592 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing) 2593{ 2594 zfs_cmd_t zc = { 0 }; 2595 char msg[1024]; 2596 int ret; 2597 nvlist_t *tgt; 2598 boolean_t avail_spare, l2cache, islog; 2599 uint64_t val; 2600 char *newname; 2601 nvlist_t **child; 2602 uint_t children; 2603 nvlist_t *config_root; 2604 libzfs_handle_t *hdl = zhp->zpool_hdl; 2605 boolean_t rootpool = zpool_is_bootable(zhp); 2606 2607 if (replacing) 2608 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2609 "cannot replace %s with %s"), old_disk, new_disk); 2610 else 2611 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2612 "cannot attach %s to %s"), new_disk, old_disk); 2613 2614 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2615 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache, 2616 &islog)) == 0) 2617 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2618 2619 if (avail_spare) 2620 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2621 2622 if (l2cache) 2623 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2624 2625 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2626 zc.zc_cookie = replacing; 2627 2628 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 2629 &child, &children) != 0 || children != 1) { 2630 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2631 "new device must be a single disk")); 2632 return (zfs_error(hdl, EZFS_INVALCONFIG, msg)); 2633 } 2634 2635 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 2636 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0); 2637 2638 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL) 2639 return (-1); 2640 2641 /* 2642 * If the target is a hot spare that has been swapped in, we can only 2643 * replace it with another hot spare. 2644 */ 2645 if (replacing && 2646 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 && 2647 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache, 2648 NULL) == NULL || !avail_spare) && 2649 is_replacing_spare(config_root, tgt, 1)) { 2650 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2651 "can only be replaced by another hot spare")); 2652 free(newname); 2653 return (zfs_error(hdl, EZFS_BADTARGET, msg)); 2654 } 2655 2656 free(newname); 2657 2658 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 2659 return (-1); 2660 2661 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc); 2662 2663 zcmd_free_nvlists(&zc); 2664 2665 if (ret == 0) { 2666 if (rootpool) { 2667 /* 2668 * XXX need a better way to prevent user from 2669 * booting up a half-baked vdev. 2670 */ 2671 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make " 2672 "sure to wait until resilver is done " 2673 "before rebooting.\n")); 2674 (void) fprintf(stderr, "\n"); 2675 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "If " 2676 "you boot from pool '%s', you may need to update\n" 2677 "boot code on newly attached disk '%s'.\n\n" 2678 "Assuming you use GPT partitioning and 'da0' is " 2679 "your new boot disk\n" 2680 "you may use the following command:\n\n" 2681 "\tgpart bootcode -b /boot/pmbr -p " 2682 "/boot/gptzfsboot -i 1 da0\n\n"), 2683 zhp->zpool_name, new_disk); 2684 } 2685 return (0); 2686 } 2687 2688 switch (errno) { 2689 case ENOTSUP: 2690 /* 2691 * Can't attach to or replace this type of vdev. 2692 */ 2693 if (replacing) { 2694 uint64_t version = zpool_get_prop_int(zhp, 2695 ZPOOL_PROP_VERSION, NULL); 2696 2697 if (islog) 2698 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2699 "cannot replace a log with a spare")); 2700 else if (version >= SPA_VERSION_MULTI_REPLACE) 2701 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2702 "already in replacing/spare config; wait " 2703 "for completion or use 'zpool detach'")); 2704 else 2705 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2706 "cannot replace a replacing device")); 2707 } else { 2708 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2709 "can only attach to mirrors and top-level " 2710 "disks")); 2711 } 2712 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2713 break; 2714 2715 case EINVAL: 2716 /* 2717 * The new device must be a single disk. 2718 */ 2719 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2720 "new device must be a single disk")); 2721 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg); 2722 break; 2723 2724 case EBUSY: 2725 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"), 2726 new_disk); 2727 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2728 break; 2729 2730 case EOVERFLOW: 2731 /* 2732 * The new device is too small. 2733 */ 2734 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2735 "device is too small")); 2736 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2737 break; 2738 2739 case EDOM: 2740 /* 2741 * The new device has a different alignment requirement. 2742 */ 2743 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2744 "devices have different sector alignment")); 2745 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2746 break; 2747 2748 case ENAMETOOLONG: 2749 /* 2750 * The resulting top-level vdev spec won't fit in the label. 2751 */ 2752 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg); 2753 break; 2754 2755 default: 2756 (void) zpool_standard_error(hdl, errno, msg); 2757 } 2758 2759 return (-1); 2760} 2761 2762/* 2763 * Detach the specified device. 2764 */ 2765int 2766zpool_vdev_detach(zpool_handle_t *zhp, const char *path) 2767{ 2768 zfs_cmd_t zc = { 0 }; 2769 char msg[1024]; 2770 nvlist_t *tgt; 2771 boolean_t avail_spare, l2cache; 2772 libzfs_handle_t *hdl = zhp->zpool_hdl; 2773 2774 (void) snprintf(msg, sizeof (msg), 2775 dgettext(TEXT_DOMAIN, "cannot detach %s"), path); 2776 2777 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2778 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2779 NULL)) == 0) 2780 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2781 2782 if (avail_spare) 2783 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2784 2785 if (l2cache) 2786 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2787 2788 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2789 2790 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0) 2791 return (0); 2792 2793 switch (errno) { 2794 2795 case ENOTSUP: 2796 /* 2797 * Can't detach from this type of vdev. 2798 */ 2799 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only " 2800 "applicable to mirror and replacing vdevs")); 2801 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2802 break; 2803 2804 case EBUSY: 2805 /* 2806 * There are no other replicas of this device. 2807 */ 2808 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg); 2809 break; 2810 2811 default: 2812 (void) zpool_standard_error(hdl, errno, msg); 2813 } 2814 2815 return (-1); 2816} 2817 2818/* 2819 * Find a mirror vdev in the source nvlist. 2820 * 2821 * The mchild array contains a list of disks in one of the top-level mirrors 2822 * of the source pool. The schild array contains a list of disks that the 2823 * user specified on the command line. We loop over the mchild array to 2824 * see if any entry in the schild array matches. 2825 * 2826 * If a disk in the mchild array is found in the schild array, we return 2827 * the index of that entry. Otherwise we return -1. 2828 */ 2829static int 2830find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren, 2831 nvlist_t **schild, uint_t schildren) 2832{ 2833 uint_t mc; 2834 2835 for (mc = 0; mc < mchildren; mc++) { 2836 uint_t sc; 2837 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2838 mchild[mc], B_FALSE); 2839 2840 for (sc = 0; sc < schildren; sc++) { 2841 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2842 schild[sc], B_FALSE); 2843 boolean_t result = (strcmp(mpath, spath) == 0); 2844 2845 free(spath); 2846 if (result) { 2847 free(mpath); 2848 return (mc); 2849 } 2850 } 2851 2852 free(mpath); 2853 } 2854 2855 return (-1); 2856} 2857 2858/* 2859 * Split a mirror pool. If newroot points to null, then a new nvlist 2860 * is generated and it is the responsibility of the caller to free it. 2861 */ 2862int 2863zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot, 2864 nvlist_t *props, splitflags_t flags) 2865{ 2866 zfs_cmd_t zc = { 0 }; 2867 char msg[1024]; 2868 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL; 2869 nvlist_t **varray = NULL, *zc_props = NULL; 2870 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0; 2871 libzfs_handle_t *hdl = zhp->zpool_hdl; 2872 uint64_t vers; 2873 boolean_t freelist = B_FALSE, memory_err = B_TRUE; 2874 int retval = 0; 2875 2876 (void) snprintf(msg, sizeof (msg), 2877 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name); 2878 2879 if (!zpool_name_valid(hdl, B_FALSE, newname)) 2880 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 2881 2882 if ((config = zpool_get_config(zhp, NULL)) == NULL) { 2883 (void) fprintf(stderr, gettext("Internal error: unable to " 2884 "retrieve pool configuration\n")); 2885 return (-1); 2886 } 2887 2888 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree) 2889 == 0); 2890 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0); 2891 2892 if (props) { 2893 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 2894 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name, 2895 props, vers, flags, msg)) == NULL) 2896 return (-1); 2897 } 2898 2899 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2900 &children) != 0) { 2901 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2902 "Source pool is missing vdev tree")); 2903 if (zc_props) 2904 nvlist_free(zc_props); 2905 return (-1); 2906 } 2907 2908 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *)); 2909 vcount = 0; 2910 2911 if (*newroot == NULL || 2912 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, 2913 &newchild, &newchildren) != 0) 2914 newchildren = 0; 2915 2916 for (c = 0; c < children; c++) { 2917 uint64_t is_log = B_FALSE, is_hole = B_FALSE; 2918 char *type; 2919 nvlist_t **mchild, *vdev; 2920 uint_t mchildren; 2921 int entry; 2922 2923 /* 2924 * Unlike cache & spares, slogs are stored in the 2925 * ZPOOL_CONFIG_CHILDREN array. We filter them out here. 2926 */ 2927 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 2928 &is_log); 2929 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, 2930 &is_hole); 2931 if (is_log || is_hole) { 2932 /* 2933 * Create a hole vdev and put it in the config. 2934 */ 2935 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0) 2936 goto out; 2937 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, 2938 VDEV_TYPE_HOLE) != 0) 2939 goto out; 2940 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE, 2941 1) != 0) 2942 goto out; 2943 if (lastlog == 0) 2944 lastlog = vcount; 2945 varray[vcount++] = vdev; 2946 continue; 2947 } 2948 lastlog = 0; 2949 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type) 2950 == 0); 2951 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) { 2952 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2953 "Source pool must be composed only of mirrors\n")); 2954 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2955 goto out; 2956 } 2957 2958 verify(nvlist_lookup_nvlist_array(child[c], 2959 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2960 2961 /* find or add an entry for this top-level vdev */ 2962 if (newchildren > 0 && 2963 (entry = find_vdev_entry(zhp, mchild, mchildren, 2964 newchild, newchildren)) >= 0) { 2965 /* We found a disk that the user specified. */ 2966 vdev = mchild[entry]; 2967 ++found; 2968 } else { 2969 /* User didn't specify a disk for this vdev. */ 2970 vdev = mchild[mchildren - 1]; 2971 } 2972 2973 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0) 2974 goto out; 2975 } 2976 2977 /* did we find every disk the user specified? */ 2978 if (found != newchildren) { 2979 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must " 2980 "include at most one disk from each mirror")); 2981 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2982 goto out; 2983 } 2984 2985 /* Prepare the nvlist for populating. */ 2986 if (*newroot == NULL) { 2987 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0) 2988 goto out; 2989 freelist = B_TRUE; 2990 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE, 2991 VDEV_TYPE_ROOT) != 0) 2992 goto out; 2993 } else { 2994 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0); 2995 } 2996 2997 /* Add all the children we found */ 2998 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray, 2999 lastlog == 0 ? vcount : lastlog) != 0) 3000 goto out; 3001 3002 /* 3003 * If we're just doing a dry run, exit now with success. 3004 */ 3005 if (flags.dryrun) { 3006 memory_err = B_FALSE; 3007 freelist = B_FALSE; 3008 goto out; 3009 } 3010 3011 /* now build up the config list & call the ioctl */ 3012 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0) 3013 goto out; 3014 3015 if (nvlist_add_nvlist(newconfig, 3016 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 || 3017 nvlist_add_string(newconfig, 3018 ZPOOL_CONFIG_POOL_NAME, newname) != 0 || 3019 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0) 3020 goto out; 3021 3022 /* 3023 * The new pool is automatically part of the namespace unless we 3024 * explicitly export it. 3025 */ 3026 if (!flags.import) 3027 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT; 3028 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3029 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string)); 3030 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0) 3031 goto out; 3032 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 3033 goto out; 3034 3035 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) { 3036 retval = zpool_standard_error(hdl, errno, msg); 3037 goto out; 3038 } 3039 3040 freelist = B_FALSE; 3041 memory_err = B_FALSE; 3042 3043out: 3044 if (varray != NULL) { 3045 int v; 3046 3047 for (v = 0; v < vcount; v++) 3048 nvlist_free(varray[v]); 3049 free(varray); 3050 } 3051 zcmd_free_nvlists(&zc); 3052 if (zc_props) 3053 nvlist_free(zc_props); 3054 if (newconfig) 3055 nvlist_free(newconfig); 3056 if (freelist) { 3057 nvlist_free(*newroot); 3058 *newroot = NULL; 3059 } 3060 3061 if (retval != 0) 3062 return (retval); 3063 3064 if (memory_err) 3065 return (no_memory(hdl)); 3066 3067 return (0); 3068} 3069 3070/* 3071 * Remove the given device. Currently, this is supported only for hot spares 3072 * and level 2 cache devices. 3073 */ 3074int 3075zpool_vdev_remove(zpool_handle_t *zhp, const char *path) 3076{ 3077 zfs_cmd_t zc = { 0 }; 3078 char msg[1024]; 3079 nvlist_t *tgt; 3080 boolean_t avail_spare, l2cache, islog; 3081 libzfs_handle_t *hdl = zhp->zpool_hdl; 3082 uint64_t version; 3083 3084 (void) snprintf(msg, sizeof (msg), 3085 dgettext(TEXT_DOMAIN, "cannot remove %s"), path); 3086 3087 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3088 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 3089 &islog)) == 0) 3090 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3091 /* 3092 * XXX - this should just go away. 3093 */ 3094 if (!avail_spare && !l2cache && !islog) { 3095 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3096 "only inactive hot spares, cache, top-level, " 3097 "or log devices can be removed")); 3098 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3099 } 3100 3101 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 3102 if (islog && version < SPA_VERSION_HOLES) { 3103 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3104 "pool must be upgrade to support log removal")); 3105 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 3106 } 3107 3108 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 3109 3110 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0) 3111 return (0); 3112 3113 return (zpool_standard_error(hdl, errno, msg)); 3114} 3115 3116/* 3117 * Clear the errors for the pool, or the particular device if specified. 3118 */ 3119int 3120zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) 3121{ 3122 zfs_cmd_t zc = { 0 }; 3123 char msg[1024]; 3124 nvlist_t *tgt; 3125 zpool_rewind_policy_t policy; 3126 boolean_t avail_spare, l2cache; 3127 libzfs_handle_t *hdl = zhp->zpool_hdl; 3128 nvlist_t *nvi = NULL; 3129 int error; 3130 3131 if (path) 3132 (void) snprintf(msg, sizeof (msg), 3133 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3134 path); 3135 else 3136 (void) snprintf(msg, sizeof (msg), 3137 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3138 zhp->zpool_name); 3139 3140 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3141 if (path) { 3142 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, 3143 &l2cache, NULL)) == 0) 3144 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3145 3146 /* 3147 * Don't allow error clearing for hot spares. Do allow 3148 * error clearing for l2cache devices. 3149 */ 3150 if (avail_spare) 3151 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 3152 3153 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, 3154 &zc.zc_guid) == 0); 3155 } 3156 3157 zpool_get_rewind_policy(rewindnvl, &policy); 3158 zc.zc_cookie = policy.zrp_request; 3159 3160 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0) 3161 return (-1); 3162 3163 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0) 3164 return (-1); 3165 3166 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 && 3167 errno == ENOMEM) { 3168 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 3169 zcmd_free_nvlists(&zc); 3170 return (-1); 3171 } 3172 } 3173 3174 if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) && 3175 errno != EPERM && errno != EACCES)) { 3176 if (policy.zrp_request & 3177 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 3178 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 3179 zpool_rewind_exclaim(hdl, zc.zc_name, 3180 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), 3181 nvi); 3182 nvlist_free(nvi); 3183 } 3184 zcmd_free_nvlists(&zc); 3185 return (0); 3186 } 3187 3188 zcmd_free_nvlists(&zc); 3189 return (zpool_standard_error(hdl, errno, msg)); 3190} 3191 3192/* 3193 * Similar to zpool_clear(), but takes a GUID (used by fmd). 3194 */ 3195int 3196zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid) 3197{ 3198 zfs_cmd_t zc = { 0 }; 3199 char msg[1024]; 3200 libzfs_handle_t *hdl = zhp->zpool_hdl; 3201 3202 (void) snprintf(msg, sizeof (msg), 3203 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"), 3204 guid); 3205 3206 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3207 zc.zc_guid = guid; 3208 zc.zc_cookie = ZPOOL_NO_REWIND; 3209 3210 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0) 3211 return (0); 3212 3213 return (zpool_standard_error(hdl, errno, msg)); 3214} 3215 3216/* 3217 * Change the GUID for a pool. 3218 */ 3219int 3220zpool_reguid(zpool_handle_t *zhp) 3221{ 3222 char msg[1024]; 3223 libzfs_handle_t *hdl = zhp->zpool_hdl; 3224 zfs_cmd_t zc = { 0 }; 3225 3226 (void) snprintf(msg, sizeof (msg), 3227 dgettext(TEXT_DOMAIN, "cannot reguid '%s'"), zhp->zpool_name); 3228 3229 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3230 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REGUID, &zc) == 0) 3231 return (0); 3232 3233 return (zpool_standard_error(hdl, errno, msg)); 3234} 3235 3236/* 3237 * Reopen the pool. 3238 */ 3239int 3240zpool_reopen(zpool_handle_t *zhp) 3241{ 3242 zfs_cmd_t zc = { 0 }; 3243 char msg[1024]; 3244 libzfs_handle_t *hdl = zhp->zpool_hdl; 3245 3246 (void) snprintf(msg, sizeof (msg), 3247 dgettext(TEXT_DOMAIN, "cannot reopen '%s'"), 3248 zhp->zpool_name); 3249 3250 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3251 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REOPEN, &zc) == 0) 3252 return (0); 3253 return (zpool_standard_error(hdl, errno, msg)); 3254} 3255 3256/* 3257 * Convert from a devid string to a path. 3258 */ 3259static char * 3260devid_to_path(char *devid_str) 3261{ 3262 ddi_devid_t devid; 3263 char *minor; 3264 char *path; 3265 devid_nmlist_t *list = NULL; 3266 int ret; 3267 3268 if (devid_str_decode(devid_str, &devid, &minor) != 0) 3269 return (NULL); 3270 3271 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list); 3272 3273 devid_str_free(minor); 3274 devid_free(devid); 3275 3276 if (ret != 0) 3277 return (NULL); 3278 3279 /* 3280 * In a case the strdup() fails, we will just return NULL below. 3281 */ 3282 path = strdup(list[0].devname); 3283 3284 devid_free_nmlist(list); 3285 3286 return (path); 3287} 3288 3289/* 3290 * Convert from a path to a devid string. 3291 */ 3292static char * 3293path_to_devid(const char *path) 3294{ 3295#ifdef have_devid 3296 int fd; 3297 ddi_devid_t devid; 3298 char *minor, *ret; 3299 3300 if ((fd = open(path, O_RDONLY)) < 0) 3301 return (NULL); 3302 3303 minor = NULL; 3304 ret = NULL; 3305 if (devid_get(fd, &devid) == 0) { 3306 if (devid_get_minor_name(fd, &minor) == 0) 3307 ret = devid_str_encode(devid, minor); 3308 if (minor != NULL) 3309 devid_str_free(minor); 3310 devid_free(devid); 3311 } 3312 (void) close(fd); 3313 3314 return (ret); 3315#else 3316 return (NULL); 3317#endif 3318} 3319 3320/* 3321 * Issue the necessary ioctl() to update the stored path value for the vdev. We 3322 * ignore any failure here, since a common case is for an unprivileged user to 3323 * type 'zpool status', and we'll display the correct information anyway. 3324 */ 3325static void 3326set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path) 3327{ 3328 zfs_cmd_t zc = { 0 }; 3329 3330 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3331 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value)); 3332 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3333 &zc.zc_guid) == 0); 3334 3335 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc); 3336} 3337 3338/* 3339 * Given a vdev, return the name to display in iostat. If the vdev has a path, 3340 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type. 3341 * We also check if this is a whole disk, in which case we strip off the 3342 * trailing 's0' slice name. 3343 * 3344 * This routine is also responsible for identifying when disks have been 3345 * reconfigured in a new location. The kernel will have opened the device by 3346 * devid, but the path will still refer to the old location. To catch this, we 3347 * first do a path -> devid translation (which is fast for the common case). If 3348 * the devid matches, we're done. If not, we do a reverse devid -> path 3349 * translation and issue the appropriate ioctl() to update the path of the vdev. 3350 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any 3351 * of these checks. 3352 */ 3353char * 3354zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv, 3355 boolean_t verbose) 3356{ 3357 char *path, *devid; 3358 uint64_t value; 3359 char buf[64]; 3360 vdev_stat_t *vs; 3361 uint_t vsc; 3362 int have_stats; 3363 int have_path; 3364 3365 have_stats = nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 3366 (uint64_t **)&vs, &vsc) == 0; 3367 have_path = nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0; 3368 3369 /* 3370 * If the device is not currently present, assume it will not 3371 * come back at the same device path. Display the device by GUID. 3372 */ 3373 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &value) == 0 || 3374 have_path && have_stats && vs->vs_state <= VDEV_STATE_CANT_OPEN) { 3375 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3376 &value) == 0); 3377 (void) snprintf(buf, sizeof (buf), "%llu", 3378 (u_longlong_t)value); 3379 path = buf; 3380 } else if (have_path) { 3381 3382 /* 3383 * If the device is dead (faulted, offline, etc) then don't 3384 * bother opening it. Otherwise we may be forcing the user to 3385 * open a misbehaving device, which can have undesirable 3386 * effects. 3387 */ 3388 if ((have_stats == 0 || 3389 vs->vs_state >= VDEV_STATE_DEGRADED) && 3390 zhp != NULL && 3391 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) { 3392 /* 3393 * Determine if the current path is correct. 3394 */ 3395 char *newdevid = path_to_devid(path); 3396 3397 if (newdevid == NULL || 3398 strcmp(devid, newdevid) != 0) { 3399 char *newpath; 3400 3401 if ((newpath = devid_to_path(devid)) != NULL) { 3402 /* 3403 * Update the path appropriately. 3404 */ 3405 set_path(zhp, nv, newpath); 3406 if (nvlist_add_string(nv, 3407 ZPOOL_CONFIG_PATH, newpath) == 0) 3408 verify(nvlist_lookup_string(nv, 3409 ZPOOL_CONFIG_PATH, 3410 &path) == 0); 3411 free(newpath); 3412 } 3413 } 3414 3415 if (newdevid) 3416 devid_str_free(newdevid); 3417 } 3418 3419#ifdef illumos 3420 if (strncmp(path, "/dev/dsk/", 9) == 0) 3421 path += 9; 3422 3423 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 3424 &value) == 0 && value) { 3425 int pathlen = strlen(path); 3426 char *tmp = zfs_strdup(hdl, path); 3427 3428 /* 3429 * If it starts with c#, and ends with "s0", chop 3430 * the "s0" off, or if it ends with "s0/old", remove 3431 * the "s0" from the middle. 3432 */ 3433 if (CTD_CHECK(tmp)) { 3434 if (strcmp(&tmp[pathlen - 2], "s0") == 0) { 3435 tmp[pathlen - 2] = '\0'; 3436 } else if (pathlen > 6 && 3437 strcmp(&tmp[pathlen - 6], "s0/old") == 0) { 3438 (void) strcpy(&tmp[pathlen - 6], 3439 "/old"); 3440 } 3441 } 3442 return (tmp); 3443 } 3444#else /* !illumos */ 3445 if (strncmp(path, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 3446 path += sizeof(_PATH_DEV) - 1; 3447#endif /* illumos */ 3448 } else { 3449 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0); 3450 3451 /* 3452 * If it's a raidz device, we need to stick in the parity level. 3453 */ 3454 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) { 3455 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, 3456 &value) == 0); 3457 (void) snprintf(buf, sizeof (buf), "%s%llu", path, 3458 (u_longlong_t)value); 3459 path = buf; 3460 } 3461 3462 /* 3463 * We identify each top-level vdev by using a <type-id> 3464 * naming convention. 3465 */ 3466 if (verbose) { 3467 uint64_t id; 3468 3469 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 3470 &id) == 0); 3471 (void) snprintf(buf, sizeof (buf), "%s-%llu", path, 3472 (u_longlong_t)id); 3473 path = buf; 3474 } 3475 } 3476 3477 return (zfs_strdup(hdl, path)); 3478} 3479 3480static int 3481zbookmark_mem_compare(const void *a, const void *b) 3482{ 3483 return (memcmp(a, b, sizeof (zbookmark_phys_t))); 3484} 3485 3486/* 3487 * Retrieve the persistent error log, uniquify the members, and return to the 3488 * caller. 3489 */ 3490int 3491zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp) 3492{ 3493 zfs_cmd_t zc = { 0 }; 3494 uint64_t count; 3495 zbookmark_phys_t *zb = NULL; 3496 int i; 3497 3498 /* 3499 * Retrieve the raw error list from the kernel. If the number of errors 3500 * has increased, allocate more space and continue until we get the 3501 * entire list. 3502 */ 3503 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT, 3504 &count) == 0); 3505 if (count == 0) 3506 return (0); 3507 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl, 3508 count * sizeof (zbookmark_phys_t))) == (uintptr_t)NULL) 3509 return (-1); 3510 zc.zc_nvlist_dst_size = count; 3511 (void) strcpy(zc.zc_name, zhp->zpool_name); 3512 for (;;) { 3513 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG, 3514 &zc) != 0) { 3515 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3516 if (errno == ENOMEM) { 3517 void *dst; 3518 3519 count = zc.zc_nvlist_dst_size; 3520 dst = zfs_alloc(zhp->zpool_hdl, count * 3521 sizeof (zbookmark_phys_t)); 3522 if (dst == NULL) 3523 return (-1); 3524 zc.zc_nvlist_dst = (uintptr_t)dst; 3525 } else { 3526 return (-1); 3527 } 3528 } else { 3529 break; 3530 } 3531 } 3532 3533 /* 3534 * Sort the resulting bookmarks. This is a little confusing due to the 3535 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last 3536 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks 3537 * _not_ copied as part of the process. So we point the start of our 3538 * array appropriate and decrement the total number of elements. 3539 */ 3540 zb = ((zbookmark_phys_t *)(uintptr_t)zc.zc_nvlist_dst) + 3541 zc.zc_nvlist_dst_size; 3542 count -= zc.zc_nvlist_dst_size; 3543 3544 qsort(zb, count, sizeof (zbookmark_phys_t), zbookmark_mem_compare); 3545 3546 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0); 3547 3548 /* 3549 * Fill in the nverrlistp with nvlist's of dataset and object numbers. 3550 */ 3551 for (i = 0; i < count; i++) { 3552 nvlist_t *nv; 3553 3554 /* ignoring zb_blkid and zb_level for now */ 3555 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset && 3556 zb[i-1].zb_object == zb[i].zb_object) 3557 continue; 3558 3559 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0) 3560 goto nomem; 3561 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET, 3562 zb[i].zb_objset) != 0) { 3563 nvlist_free(nv); 3564 goto nomem; 3565 } 3566 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT, 3567 zb[i].zb_object) != 0) { 3568 nvlist_free(nv); 3569 goto nomem; 3570 } 3571 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) { 3572 nvlist_free(nv); 3573 goto nomem; 3574 } 3575 nvlist_free(nv); 3576 } 3577 3578 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3579 return (0); 3580 3581nomem: 3582 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3583 return (no_memory(zhp->zpool_hdl)); 3584} 3585 3586/* 3587 * Upgrade a ZFS pool to the latest on-disk version. 3588 */ 3589int 3590zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version) 3591{ 3592 zfs_cmd_t zc = { 0 }; 3593 libzfs_handle_t *hdl = zhp->zpool_hdl; 3594 3595 (void) strcpy(zc.zc_name, zhp->zpool_name); 3596 zc.zc_cookie = new_version; 3597 3598 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0) 3599 return (zpool_standard_error_fmt(hdl, errno, 3600 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"), 3601 zhp->zpool_name)); 3602 return (0); 3603} 3604 3605void 3606zfs_save_arguments(int argc, char **argv, char *string, int len) 3607{ 3608 (void) strlcpy(string, basename(argv[0]), len); 3609 for (int i = 1; i < argc; i++) { 3610 (void) strlcat(string, " ", len); 3611 (void) strlcat(string, argv[i], len); 3612 } 3613} 3614 3615int 3616zpool_log_history(libzfs_handle_t *hdl, const char *message) 3617{ 3618 zfs_cmd_t zc = { 0 }; 3619 nvlist_t *args; 3620 int err; 3621 3622 args = fnvlist_alloc(); 3623 fnvlist_add_string(args, "message", message); 3624 err = zcmd_write_src_nvlist(hdl, &zc, args); 3625 if (err == 0) 3626 err = ioctl(hdl->libzfs_fd, ZFS_IOC_LOG_HISTORY, &zc); 3627 nvlist_free(args); 3628 zcmd_free_nvlists(&zc); 3629 return (err); 3630} 3631 3632/* 3633 * Perform ioctl to get some command history of a pool. 3634 * 3635 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the 3636 * logical offset of the history buffer to start reading from. 3637 * 3638 * Upon return, 'off' is the next logical offset to read from and 3639 * 'len' is the actual amount of bytes read into 'buf'. 3640 */ 3641static int 3642get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len) 3643{ 3644 zfs_cmd_t zc = { 0 }; 3645 libzfs_handle_t *hdl = zhp->zpool_hdl; 3646 3647 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3648 3649 zc.zc_history = (uint64_t)(uintptr_t)buf; 3650 zc.zc_history_len = *len; 3651 zc.zc_history_offset = *off; 3652 3653 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) { 3654 switch (errno) { 3655 case EPERM: 3656 return (zfs_error_fmt(hdl, EZFS_PERM, 3657 dgettext(TEXT_DOMAIN, 3658 "cannot show history for pool '%s'"), 3659 zhp->zpool_name)); 3660 case ENOENT: 3661 return (zfs_error_fmt(hdl, EZFS_NOHISTORY, 3662 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3663 "'%s'"), zhp->zpool_name)); 3664 case ENOTSUP: 3665 return (zfs_error_fmt(hdl, EZFS_BADVERSION, 3666 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3667 "'%s', pool must be upgraded"), zhp->zpool_name)); 3668 default: 3669 return (zpool_standard_error_fmt(hdl, errno, 3670 dgettext(TEXT_DOMAIN, 3671 "cannot get history for '%s'"), zhp->zpool_name)); 3672 } 3673 } 3674 3675 *len = zc.zc_history_len; 3676 *off = zc.zc_history_offset; 3677 3678 return (0); 3679} 3680 3681/* 3682 * Process the buffer of nvlists, unpacking and storing each nvlist record 3683 * into 'records'. 'leftover' is set to the number of bytes that weren't 3684 * processed as there wasn't a complete record. 3685 */ 3686int 3687zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover, 3688 nvlist_t ***records, uint_t *numrecords) 3689{ 3690 uint64_t reclen; 3691 nvlist_t *nv; 3692 int i; 3693 3694 while (bytes_read > sizeof (reclen)) { 3695 3696 /* get length of packed record (stored as little endian) */ 3697 for (i = 0, reclen = 0; i < sizeof (reclen); i++) 3698 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i); 3699 3700 if (bytes_read < sizeof (reclen) + reclen) 3701 break; 3702 3703 /* unpack record */ 3704 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0) 3705 return (ENOMEM); 3706 bytes_read -= sizeof (reclen) + reclen; 3707 buf += sizeof (reclen) + reclen; 3708 3709 /* add record to nvlist array */ 3710 (*numrecords)++; 3711 if (ISP2(*numrecords + 1)) { 3712 *records = realloc(*records, 3713 *numrecords * 2 * sizeof (nvlist_t *)); 3714 } 3715 (*records)[*numrecords - 1] = nv; 3716 } 3717 3718 *leftover = bytes_read; 3719 return (0); 3720} 3721 3722/* from spa_history.c: spa_history_create_obj() */ 3723#define HIS_BUF_LEN_DEF (128 << 10) 3724#define HIS_BUF_LEN_MAX (1 << 30) 3725 3726/* 3727 * Retrieve the command history of a pool. 3728 */ 3729int 3730zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp) 3731{ 3732 char *buf; 3733 uint64_t buflen = HIS_BUF_LEN_DEF; 3734 uint64_t off = 0; 3735 nvlist_t **records = NULL; 3736 uint_t numrecords = 0; 3737 int err, i; 3738 3739 buf = malloc(buflen); 3740 if (buf == NULL) 3741 return (ENOMEM); 3742 do { 3743 uint64_t bytes_read = buflen; 3744 uint64_t leftover; 3745 3746 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0) 3747 break; 3748 3749 /* if nothing else was read in, we're at EOF, just return */ 3750 if (bytes_read == 0) 3751 break; 3752 3753 if ((err = zpool_history_unpack(buf, bytes_read, 3754 &leftover, &records, &numrecords)) != 0) 3755 break; 3756 off -= leftover; 3757 if (leftover == bytes_read) { 3758 /* 3759 * no progress made, because buffer is not big enough 3760 * to hold this record; resize and retry. 3761 */ 3762 buflen *= 2; 3763 free(buf); 3764 buf = NULL; 3765 if ((buflen >= HIS_BUF_LEN_MAX) || 3766 ((buf = malloc(buflen)) == NULL)) { 3767 err = ENOMEM; 3768 break; 3769 } 3770 } 3771 3772 /* CONSTCOND */ 3773 } while (1); 3774 3775 free(buf); 3776 3777 if (!err) { 3778 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0); 3779 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD, 3780 records, numrecords) == 0); 3781 } 3782 for (i = 0; i < numrecords; i++) 3783 nvlist_free(records[i]); 3784 free(records); 3785 3786 return (err); 3787} 3788 3789void 3790zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj, 3791 char *pathname, size_t len) 3792{ 3793 zfs_cmd_t zc = { 0 }; 3794 boolean_t mounted = B_FALSE; 3795 char *mntpnt = NULL; 3796 char dsname[MAXNAMELEN]; 3797 3798 if (dsobj == 0) { 3799 /* special case for the MOS */ 3800 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", obj); 3801 return; 3802 } 3803 3804 /* get the dataset's name */ 3805 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3806 zc.zc_obj = dsobj; 3807 if (ioctl(zhp->zpool_hdl->libzfs_fd, 3808 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) { 3809 /* just write out a path of two object numbers */ 3810 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>", 3811 dsobj, obj); 3812 return; 3813 } 3814 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname)); 3815 3816 /* find out if the dataset is mounted */ 3817 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt); 3818 3819 /* get the corrupted object's path */ 3820 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name)); 3821 zc.zc_obj = obj; 3822 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH, 3823 &zc) == 0) { 3824 if (mounted) { 3825 (void) snprintf(pathname, len, "%s%s", mntpnt, 3826 zc.zc_value); 3827 } else { 3828 (void) snprintf(pathname, len, "%s:%s", 3829 dsname, zc.zc_value); 3830 } 3831 } else { 3832 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, obj); 3833 } 3834 free(mntpnt); 3835} 3836 3837#ifdef illumos 3838/* 3839 * Read the EFI label from the config, if a label does not exist then 3840 * pass back the error to the caller. If the caller has passed a non-NULL 3841 * diskaddr argument then we set it to the starting address of the EFI 3842 * partition. 3843 */ 3844static int 3845read_efi_label(nvlist_t *config, diskaddr_t *sb) 3846{ 3847 char *path; 3848 int fd; 3849 char diskname[MAXPATHLEN]; 3850 int err = -1; 3851 3852 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0) 3853 return (err); 3854 3855 (void) snprintf(diskname, sizeof (diskname), "%s%s", RDISK_ROOT, 3856 strrchr(path, '/')); 3857 if ((fd = open(diskname, O_RDONLY|O_NDELAY)) >= 0) { 3858 struct dk_gpt *vtoc; 3859 3860 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) { 3861 if (sb != NULL) 3862 *sb = vtoc->efi_parts[0].p_start; 3863 efi_free(vtoc); 3864 } 3865 (void) close(fd); 3866 } 3867 return (err); 3868} 3869 3870/* 3871 * determine where a partition starts on a disk in the current 3872 * configuration 3873 */ 3874static diskaddr_t 3875find_start_block(nvlist_t *config) 3876{ 3877 nvlist_t **child; 3878 uint_t c, children; 3879 diskaddr_t sb = MAXOFFSET_T; 3880 uint64_t wholedisk; 3881 3882 if (nvlist_lookup_nvlist_array(config, 3883 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) { 3884 if (nvlist_lookup_uint64(config, 3885 ZPOOL_CONFIG_WHOLE_DISK, 3886 &wholedisk) != 0 || !wholedisk) { 3887 return (MAXOFFSET_T); 3888 } 3889 if (read_efi_label(config, &sb) < 0) 3890 sb = MAXOFFSET_T; 3891 return (sb); 3892 } 3893 3894 for (c = 0; c < children; c++) { 3895 sb = find_start_block(child[c]); 3896 if (sb != MAXOFFSET_T) { 3897 return (sb); 3898 } 3899 } 3900 return (MAXOFFSET_T); 3901} 3902#endif /* illumos */ 3903 3904/* 3905 * Label an individual disk. The name provided is the short name, 3906 * stripped of any leading /dev path. 3907 */ 3908int 3909zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name) 3910{ 3911#ifdef illumos 3912 char path[MAXPATHLEN]; 3913 struct dk_gpt *vtoc; 3914 int fd; 3915 size_t resv = EFI_MIN_RESV_SIZE; 3916 uint64_t slice_size; 3917 diskaddr_t start_block; 3918 char errbuf[1024]; 3919 3920 /* prepare an error message just in case */ 3921 (void) snprintf(errbuf, sizeof (errbuf), 3922 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name); 3923 3924 if (zhp) { 3925 nvlist_t *nvroot; 3926 3927 verify(nvlist_lookup_nvlist(zhp->zpool_config, 3928 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 3929 3930 if (zhp->zpool_start_block == 0) 3931 start_block = find_start_block(nvroot); 3932 else 3933 start_block = zhp->zpool_start_block; 3934 zhp->zpool_start_block = start_block; 3935 } else { 3936 /* new pool */ 3937 start_block = NEW_START_BLOCK; 3938 } 3939 3940 (void) snprintf(path, sizeof (path), "%s/%s%s", RDISK_ROOT, name, 3941 BACKUP_SLICE); 3942 3943 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 3944 /* 3945 * This shouldn't happen. We've long since verified that this 3946 * is a valid device. 3947 */ 3948 zfs_error_aux(hdl, 3949 dgettext(TEXT_DOMAIN, "unable to open device")); 3950 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 3951 } 3952 3953 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) { 3954 /* 3955 * The only way this can fail is if we run out of memory, or we 3956 * were unable to read the disk's capacity 3957 */ 3958 if (errno == ENOMEM) 3959 (void) no_memory(hdl); 3960 3961 (void) close(fd); 3962 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3963 "unable to read disk capacity"), name); 3964 3965 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 3966 } 3967 3968 slice_size = vtoc->efi_last_u_lba + 1; 3969 slice_size -= EFI_MIN_RESV_SIZE; 3970 if (start_block == MAXOFFSET_T) 3971 start_block = NEW_START_BLOCK; 3972 slice_size -= start_block; 3973 3974 vtoc->efi_parts[0].p_start = start_block; 3975 vtoc->efi_parts[0].p_size = slice_size; 3976 3977 /* 3978 * Why we use V_USR: V_BACKUP confuses users, and is considered 3979 * disposable by some EFI utilities (since EFI doesn't have a backup 3980 * slice). V_UNASSIGNED is supposed to be used only for zero size 3981 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT, 3982 * etc. were all pretty specific. V_USR is as close to reality as we 3983 * can get, in the absence of V_OTHER. 3984 */ 3985 vtoc->efi_parts[0].p_tag = V_USR; 3986 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs"); 3987 3988 vtoc->efi_parts[8].p_start = slice_size + start_block; 3989 vtoc->efi_parts[8].p_size = resv; 3990 vtoc->efi_parts[8].p_tag = V_RESERVED; 3991 3992 if (efi_write(fd, vtoc) != 0) { 3993 /* 3994 * Some block drivers (like pcata) may not support EFI 3995 * GPT labels. Print out a helpful error message dir- 3996 * ecting the user to manually label the disk and give 3997 * a specific slice. 3998 */ 3999 (void) close(fd); 4000 efi_free(vtoc); 4001 4002 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4003 "try using fdisk(1M) and then provide a specific slice")); 4004 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf)); 4005 } 4006 4007 (void) close(fd); 4008 efi_free(vtoc); 4009#endif /* illumos */ 4010 return (0); 4011} 4012 4013static boolean_t 4014supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf) 4015{ 4016 char *type; 4017 nvlist_t **child; 4018 uint_t children, c; 4019 4020 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_TYPE, &type) == 0); 4021 if (strcmp(type, VDEV_TYPE_FILE) == 0 || 4022 strcmp(type, VDEV_TYPE_HOLE) == 0 || 4023 strcmp(type, VDEV_TYPE_MISSING) == 0) { 4024 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4025 "vdev type '%s' is not supported"), type); 4026 (void) zfs_error(hdl, EZFS_VDEVNOTSUP, errbuf); 4027 return (B_FALSE); 4028 } 4029 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN, 4030 &child, &children) == 0) { 4031 for (c = 0; c < children; c++) { 4032 if (!supported_dump_vdev_type(hdl, child[c], errbuf)) 4033 return (B_FALSE); 4034 } 4035 } 4036 return (B_TRUE); 4037} 4038 4039/* 4040 * Check if this zvol is allowable for use as a dump device; zero if 4041 * it is, > 0 if it isn't, < 0 if it isn't a zvol. 4042 * 4043 * Allowable storage configurations include mirrors, all raidz variants, and 4044 * pools with log, cache, and spare devices. Pools which are backed by files or 4045 * have missing/hole vdevs are not suitable. 4046 */ 4047int 4048zvol_check_dump_config(char *arg) 4049{ 4050 zpool_handle_t *zhp = NULL; 4051 nvlist_t *config, *nvroot; 4052 char *p, *volname; 4053 nvlist_t **top; 4054 uint_t toplevels; 4055 libzfs_handle_t *hdl; 4056 char errbuf[1024]; 4057 char poolname[ZPOOL_MAXNAMELEN]; 4058 int pathlen = strlen(ZVOL_FULL_DEV_DIR); 4059 int ret = 1; 4060 4061 if (strncmp(arg, ZVOL_FULL_DEV_DIR, pathlen)) { 4062 return (-1); 4063 } 4064 4065 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4066 "dump is not supported on device '%s'"), arg); 4067 4068 if ((hdl = libzfs_init()) == NULL) 4069 return (1); 4070 libzfs_print_on_error(hdl, B_TRUE); 4071 4072 volname = arg + pathlen; 4073 4074 /* check the configuration of the pool */ 4075 if ((p = strchr(volname, '/')) == NULL) { 4076 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4077 "malformed dataset name")); 4078 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 4079 return (1); 4080 } else if (p - volname >= ZFS_MAXNAMELEN) { 4081 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4082 "dataset name is too long")); 4083 (void) zfs_error(hdl, EZFS_NAMETOOLONG, errbuf); 4084 return (1); 4085 } else { 4086 (void) strncpy(poolname, volname, p - volname); 4087 poolname[p - volname] = '\0'; 4088 } 4089 4090 if ((zhp = zpool_open(hdl, poolname)) == NULL) { 4091 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4092 "could not open pool '%s'"), poolname); 4093 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 4094 goto out; 4095 } 4096 config = zpool_get_config(zhp, NULL); 4097 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 4098 &nvroot) != 0) { 4099 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4100 "could not obtain vdev configuration for '%s'"), poolname); 4101 (void) zfs_error(hdl, EZFS_INVALCONFIG, errbuf); 4102 goto out; 4103 } 4104 4105 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 4106 &top, &toplevels) == 0); 4107 4108 if (!supported_dump_vdev_type(hdl, top[0], errbuf)) { 4109 goto out; 4110 } 4111 ret = 0; 4112 4113out: 4114 if (zhp) 4115 zpool_close(zhp); 4116 libzfs_fini(hdl); 4117 return (ret); 4118} 4119