libzfs_pool.c revision 297077
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, 2015 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 /* 1891 * If it starts with a slash, check the last component. 1892 */ 1893 if (str && str[0] == '/') { 1894 char *tmp = strrchr(str, '/'); 1895 1896 /* 1897 * If it ends in "/old", check the second-to-last 1898 * component of the string instead. 1899 */ 1900 if (tmp != str && strcmp(tmp, "/old") == 0) { 1901 for (tmp--; *tmp != '/'; tmp--) 1902 ; 1903 } 1904 str = tmp + 1; 1905 } 1906 return (CTD_CHECK(str)); 1907} 1908#endif 1909 1910/* 1911 * Find a vdev that matches the search criteria specified. We use the 1912 * the nvpair name to determine how we should look for the device. 1913 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL 1914 * spare; but FALSE if its an INUSE spare. 1915 */ 1916static nvlist_t * 1917vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare, 1918 boolean_t *l2cache, boolean_t *log) 1919{ 1920 uint_t c, children; 1921 nvlist_t **child; 1922 nvlist_t *ret; 1923 uint64_t is_log; 1924 char *srchkey; 1925 nvpair_t *pair = nvlist_next_nvpair(search, NULL); 1926 1927 /* Nothing to look for */ 1928 if (search == NULL || pair == NULL) 1929 return (NULL); 1930 1931 /* Obtain the key we will use to search */ 1932 srchkey = nvpair_name(pair); 1933 1934 switch (nvpair_type(pair)) { 1935 case DATA_TYPE_UINT64: 1936 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) { 1937 uint64_t srchval, theguid; 1938 1939 verify(nvpair_value_uint64(pair, &srchval) == 0); 1940 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 1941 &theguid) == 0); 1942 if (theguid == srchval) 1943 return (nv); 1944 } 1945 break; 1946 1947 case DATA_TYPE_STRING: { 1948 char *srchval, *val; 1949 1950 verify(nvpair_value_string(pair, &srchval) == 0); 1951 if (nvlist_lookup_string(nv, srchkey, &val) != 0) 1952 break; 1953 1954 /* 1955 * Search for the requested value. Special cases: 1956 * 1957 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in 1958 * "s0" or "s0/old". The "s0" part is hidden from the user, 1959 * but included in the string, so this matches around it. 1960 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE). 1961 * 1962 * Otherwise, all other searches are simple string compares. 1963 */ 1964#ifdef illumos 1965 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 && 1966 ctd_check_path(val)) { 1967 uint64_t wholedisk = 0; 1968 1969 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 1970 &wholedisk); 1971 if (wholedisk) { 1972 int slen = strlen(srchval); 1973 int vlen = strlen(val); 1974 1975 if (slen != vlen - 2) 1976 break; 1977 1978 /* 1979 * make_leaf_vdev() should only set 1980 * wholedisk for ZPOOL_CONFIG_PATHs which 1981 * will include "/dev/dsk/", giving plenty of 1982 * room for the indices used next. 1983 */ 1984 ASSERT(vlen >= 6); 1985 1986 /* 1987 * strings identical except trailing "s0" 1988 */ 1989 if (strcmp(&val[vlen - 2], "s0") == 0 && 1990 strncmp(srchval, val, slen) == 0) 1991 return (nv); 1992 1993 /* 1994 * strings identical except trailing "s0/old" 1995 */ 1996 if (strcmp(&val[vlen - 6], "s0/old") == 0 && 1997 strcmp(&srchval[slen - 4], "/old") == 0 && 1998 strncmp(srchval, val, slen - 4) == 0) 1999 return (nv); 2000 2001 break; 2002 } 2003 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2004#else 2005 if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2006#endif 2007 char *type, *idx, *end, *p; 2008 uint64_t id, vdev_id; 2009 2010 /* 2011 * Determine our vdev type, keeping in mind 2012 * that the srchval is composed of a type and 2013 * vdev id pair (i.e. mirror-4). 2014 */ 2015 if ((type = strdup(srchval)) == NULL) 2016 return (NULL); 2017 2018 if ((p = strrchr(type, '-')) == NULL) { 2019 free(type); 2020 break; 2021 } 2022 idx = p + 1; 2023 *p = '\0'; 2024 2025 /* 2026 * If the types don't match then keep looking. 2027 */ 2028 if (strncmp(val, type, strlen(val)) != 0) { 2029 free(type); 2030 break; 2031 } 2032 2033 verify(strncmp(type, VDEV_TYPE_RAIDZ, 2034 strlen(VDEV_TYPE_RAIDZ)) == 0 || 2035 strncmp(type, VDEV_TYPE_MIRROR, 2036 strlen(VDEV_TYPE_MIRROR)) == 0); 2037 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 2038 &id) == 0); 2039 2040 errno = 0; 2041 vdev_id = strtoull(idx, &end, 10); 2042 2043 free(type); 2044 if (errno != 0) 2045 return (NULL); 2046 2047 /* 2048 * Now verify that we have the correct vdev id. 2049 */ 2050 if (vdev_id == id) 2051 return (nv); 2052 } 2053 2054 /* 2055 * Common case 2056 */ 2057 if (strcmp(srchval, val) == 0) 2058 return (nv); 2059 break; 2060 } 2061 2062 default: 2063 break; 2064 } 2065 2066 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 2067 &child, &children) != 0) 2068 return (NULL); 2069 2070 for (c = 0; c < children; c++) { 2071 if ((ret = vdev_to_nvlist_iter(child[c], search, 2072 avail_spare, l2cache, NULL)) != NULL) { 2073 /* 2074 * The 'is_log' value is only set for the toplevel 2075 * vdev, not the leaf vdevs. So we always lookup the 2076 * log device from the root of the vdev tree (where 2077 * 'log' is non-NULL). 2078 */ 2079 if (log != NULL && 2080 nvlist_lookup_uint64(child[c], 2081 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 && 2082 is_log) { 2083 *log = B_TRUE; 2084 } 2085 return (ret); 2086 } 2087 } 2088 2089 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, 2090 &child, &children) == 0) { 2091 for (c = 0; c < children; c++) { 2092 if ((ret = vdev_to_nvlist_iter(child[c], search, 2093 avail_spare, l2cache, NULL)) != NULL) { 2094 *avail_spare = B_TRUE; 2095 return (ret); 2096 } 2097 } 2098 } 2099 2100 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, 2101 &child, &children) == 0) { 2102 for (c = 0; c < children; c++) { 2103 if ((ret = vdev_to_nvlist_iter(child[c], search, 2104 avail_spare, l2cache, NULL)) != NULL) { 2105 *l2cache = B_TRUE; 2106 return (ret); 2107 } 2108 } 2109 } 2110 2111 return (NULL); 2112} 2113 2114/* 2115 * Given a physical path (minus the "/devices" prefix), find the 2116 * associated vdev. 2117 */ 2118nvlist_t * 2119zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath, 2120 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log) 2121{ 2122 nvlist_t *search, *nvroot, *ret; 2123 2124 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2125 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0); 2126 2127 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2128 &nvroot) == 0); 2129 2130 *avail_spare = B_FALSE; 2131 *l2cache = B_FALSE; 2132 if (log != NULL) 2133 *log = B_FALSE; 2134 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2135 nvlist_free(search); 2136 2137 return (ret); 2138} 2139 2140/* 2141 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz). 2142 */ 2143boolean_t 2144zpool_vdev_is_interior(const char *name) 2145{ 2146 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 || 2147 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0) 2148 return (B_TRUE); 2149 return (B_FALSE); 2150} 2151 2152nvlist_t * 2153zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare, 2154 boolean_t *l2cache, boolean_t *log) 2155{ 2156 char buf[MAXPATHLEN]; 2157 char *end; 2158 nvlist_t *nvroot, *search, *ret; 2159 uint64_t guid; 2160 2161 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2162 2163 guid = strtoull(path, &end, 10); 2164 if (guid != 0 && *end == '\0') { 2165 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0); 2166 } else if (zpool_vdev_is_interior(path)) { 2167 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0); 2168 } else if (path[0] != '/') { 2169 (void) snprintf(buf, sizeof (buf), "%s%s", _PATH_DEV, path); 2170 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0); 2171 } else { 2172 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0); 2173 } 2174 2175 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2176 &nvroot) == 0); 2177 2178 *avail_spare = B_FALSE; 2179 *l2cache = B_FALSE; 2180 if (log != NULL) 2181 *log = B_FALSE; 2182 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2183 nvlist_free(search); 2184 2185 return (ret); 2186} 2187 2188static int 2189vdev_online(nvlist_t *nv) 2190{ 2191 uint64_t ival; 2192 2193 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 || 2194 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 || 2195 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0) 2196 return (0); 2197 2198 return (1); 2199} 2200 2201/* 2202 * Helper function for zpool_get_physpaths(). 2203 */ 2204static int 2205vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size, 2206 size_t *bytes_written) 2207{ 2208 size_t bytes_left, pos, rsz; 2209 char *tmppath; 2210 const char *format; 2211 2212 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH, 2213 &tmppath) != 0) 2214 return (EZFS_NODEVICE); 2215 2216 pos = *bytes_written; 2217 bytes_left = physpath_size - pos; 2218 format = (pos == 0) ? "%s" : " %s"; 2219 2220 rsz = snprintf(physpath + pos, bytes_left, format, tmppath); 2221 *bytes_written += rsz; 2222 2223 if (rsz >= bytes_left) { 2224 /* if physpath was not copied properly, clear it */ 2225 if (bytes_left != 0) { 2226 physpath[pos] = 0; 2227 } 2228 return (EZFS_NOSPC); 2229 } 2230 return (0); 2231} 2232 2233static int 2234vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size, 2235 size_t *rsz, boolean_t is_spare) 2236{ 2237 char *type; 2238 int ret; 2239 2240 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) 2241 return (EZFS_INVALCONFIG); 2242 2243 if (strcmp(type, VDEV_TYPE_DISK) == 0) { 2244 /* 2245 * An active spare device has ZPOOL_CONFIG_IS_SPARE set. 2246 * For a spare vdev, we only want to boot from the active 2247 * spare device. 2248 */ 2249 if (is_spare) { 2250 uint64_t spare = 0; 2251 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 2252 &spare); 2253 if (!spare) 2254 return (EZFS_INVALCONFIG); 2255 } 2256 2257 if (vdev_online(nv)) { 2258 if ((ret = vdev_get_one_physpath(nv, physpath, 2259 phypath_size, rsz)) != 0) 2260 return (ret); 2261 } 2262 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 || 2263 strcmp(type, VDEV_TYPE_REPLACING) == 0 || 2264 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) { 2265 nvlist_t **child; 2266 uint_t count; 2267 int i, ret; 2268 2269 if (nvlist_lookup_nvlist_array(nv, 2270 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0) 2271 return (EZFS_INVALCONFIG); 2272 2273 for (i = 0; i < count; i++) { 2274 ret = vdev_get_physpaths(child[i], physpath, 2275 phypath_size, rsz, is_spare); 2276 if (ret == EZFS_NOSPC) 2277 return (ret); 2278 } 2279 } 2280 2281 return (EZFS_POOL_INVALARG); 2282} 2283 2284/* 2285 * Get phys_path for a root pool config. 2286 * Return 0 on success; non-zero on failure. 2287 */ 2288static int 2289zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size) 2290{ 2291 size_t rsz; 2292 nvlist_t *vdev_root; 2293 nvlist_t **child; 2294 uint_t count; 2295 char *type; 2296 2297 rsz = 0; 2298 2299 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2300 &vdev_root) != 0) 2301 return (EZFS_INVALCONFIG); 2302 2303 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 || 2304 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN, 2305 &child, &count) != 0) 2306 return (EZFS_INVALCONFIG); 2307 2308 /* 2309 * root pool can only have a single top-level vdev. 2310 */ 2311 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1) 2312 return (EZFS_POOL_INVALARG); 2313 2314 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz, 2315 B_FALSE); 2316 2317 /* No online devices */ 2318 if (rsz == 0) 2319 return (EZFS_NODEVICE); 2320 2321 return (0); 2322} 2323 2324/* 2325 * Get phys_path for a root pool 2326 * Return 0 on success; non-zero on failure. 2327 */ 2328int 2329zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size) 2330{ 2331 return (zpool_get_config_physpath(zhp->zpool_config, physpath, 2332 phypath_size)); 2333} 2334 2335/* 2336 * If the device has being dynamically expanded then we need to relabel 2337 * the disk to use the new unallocated space. 2338 */ 2339static int 2340zpool_relabel_disk(libzfs_handle_t *hdl, const char *name) 2341{ 2342#ifdef illumos 2343 char path[MAXPATHLEN]; 2344 char errbuf[1024]; 2345 int fd, error; 2346 int (*_efi_use_whole_disk)(int); 2347 2348 if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT, 2349 "efi_use_whole_disk")) == NULL) 2350 return (-1); 2351 2352 (void) snprintf(path, sizeof (path), "%s/%s", RDISK_ROOT, name); 2353 2354 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 2355 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2356 "relabel '%s': unable to open device"), name); 2357 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 2358 } 2359 2360 /* 2361 * It's possible that we might encounter an error if the device 2362 * does not have any unallocated space left. If so, we simply 2363 * ignore that error and continue on. 2364 */ 2365 error = _efi_use_whole_disk(fd); 2366 (void) close(fd); 2367 if (error && error != VT_ENOSPC) { 2368 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2369 "relabel '%s': unable to read disk capacity"), name); 2370 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 2371 } 2372#endif /* illumos */ 2373 return (0); 2374} 2375 2376/* 2377 * Bring the specified vdev online. The 'flags' parameter is a set of the 2378 * ZFS_ONLINE_* flags. 2379 */ 2380int 2381zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags, 2382 vdev_state_t *newstate) 2383{ 2384 zfs_cmd_t zc = { 0 }; 2385 char msg[1024]; 2386 nvlist_t *tgt; 2387 boolean_t avail_spare, l2cache, islog; 2388 libzfs_handle_t *hdl = zhp->zpool_hdl; 2389 2390 if (flags & ZFS_ONLINE_EXPAND) { 2391 (void) snprintf(msg, sizeof (msg), 2392 dgettext(TEXT_DOMAIN, "cannot expand %s"), path); 2393 } else { 2394 (void) snprintf(msg, sizeof (msg), 2395 dgettext(TEXT_DOMAIN, "cannot online %s"), path); 2396 } 2397 2398 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2399 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2400 &islog)) == NULL) 2401 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2402 2403 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2404 2405 if (avail_spare) 2406 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2407 2408 if (flags & ZFS_ONLINE_EXPAND || 2409 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) { 2410 char *pathname = NULL; 2411 uint64_t wholedisk = 0; 2412 2413 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK, 2414 &wholedisk); 2415 verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH, 2416 &pathname) == 0); 2417 2418 /* 2419 * XXX - L2ARC 1.0 devices can't support expansion. 2420 */ 2421 if (l2cache) { 2422 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2423 "cannot expand cache devices")); 2424 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg)); 2425 } 2426 2427 if (wholedisk) { 2428 pathname += strlen(DISK_ROOT) + 1; 2429 (void) zpool_relabel_disk(hdl, pathname); 2430 } 2431 } 2432 2433 zc.zc_cookie = VDEV_STATE_ONLINE; 2434 zc.zc_obj = flags; 2435 2436 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) { 2437 if (errno == EINVAL) { 2438 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split " 2439 "from this pool into a new one. Use '%s' " 2440 "instead"), "zpool detach"); 2441 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg)); 2442 } 2443 return (zpool_standard_error(hdl, errno, msg)); 2444 } 2445 2446 *newstate = zc.zc_cookie; 2447 return (0); 2448} 2449 2450/* 2451 * Take the specified vdev offline 2452 */ 2453int 2454zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp) 2455{ 2456 zfs_cmd_t zc = { 0 }; 2457 char msg[1024]; 2458 nvlist_t *tgt; 2459 boolean_t avail_spare, l2cache; 2460 libzfs_handle_t *hdl = zhp->zpool_hdl; 2461 2462 (void) snprintf(msg, sizeof (msg), 2463 dgettext(TEXT_DOMAIN, "cannot offline %s"), path); 2464 2465 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2466 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2467 NULL)) == NULL) 2468 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2469 2470 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2471 2472 if (avail_spare) 2473 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2474 2475 zc.zc_cookie = VDEV_STATE_OFFLINE; 2476 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0; 2477 2478 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2479 return (0); 2480 2481 switch (errno) { 2482 case EBUSY: 2483 2484 /* 2485 * There are no other replicas of this device. 2486 */ 2487 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2488 2489 case EEXIST: 2490 /* 2491 * The log device has unplayed logs 2492 */ 2493 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg)); 2494 2495 default: 2496 return (zpool_standard_error(hdl, errno, msg)); 2497 } 2498} 2499 2500/* 2501 * Mark the given vdev faulted. 2502 */ 2503int 2504zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2505{ 2506 zfs_cmd_t zc = { 0 }; 2507 char msg[1024]; 2508 libzfs_handle_t *hdl = zhp->zpool_hdl; 2509 2510 (void) snprintf(msg, sizeof (msg), 2511 dgettext(TEXT_DOMAIN, "cannot fault %llu"), guid); 2512 2513 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2514 zc.zc_guid = guid; 2515 zc.zc_cookie = VDEV_STATE_FAULTED; 2516 zc.zc_obj = aux; 2517 2518 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2519 return (0); 2520 2521 switch (errno) { 2522 case EBUSY: 2523 2524 /* 2525 * There are no other replicas of this device. 2526 */ 2527 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2528 2529 default: 2530 return (zpool_standard_error(hdl, errno, msg)); 2531 } 2532 2533} 2534 2535/* 2536 * Mark the given vdev degraded. 2537 */ 2538int 2539zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2540{ 2541 zfs_cmd_t zc = { 0 }; 2542 char msg[1024]; 2543 libzfs_handle_t *hdl = zhp->zpool_hdl; 2544 2545 (void) snprintf(msg, sizeof (msg), 2546 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), guid); 2547 2548 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2549 zc.zc_guid = guid; 2550 zc.zc_cookie = VDEV_STATE_DEGRADED; 2551 zc.zc_obj = aux; 2552 2553 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2554 return (0); 2555 2556 return (zpool_standard_error(hdl, errno, msg)); 2557} 2558 2559/* 2560 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as 2561 * a hot spare. 2562 */ 2563static boolean_t 2564is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which) 2565{ 2566 nvlist_t **child; 2567 uint_t c, children; 2568 char *type; 2569 2570 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child, 2571 &children) == 0) { 2572 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE, 2573 &type) == 0); 2574 2575 if (strcmp(type, VDEV_TYPE_SPARE) == 0 && 2576 children == 2 && child[which] == tgt) 2577 return (B_TRUE); 2578 2579 for (c = 0; c < children; c++) 2580 if (is_replacing_spare(child[c], tgt, which)) 2581 return (B_TRUE); 2582 } 2583 2584 return (B_FALSE); 2585} 2586 2587/* 2588 * Attach new_disk (fully described by nvroot) to old_disk. 2589 * If 'replacing' is specified, the new disk will replace the old one. 2590 */ 2591int 2592zpool_vdev_attach(zpool_handle_t *zhp, 2593 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing) 2594{ 2595 zfs_cmd_t zc = { 0 }; 2596 char msg[1024]; 2597 int ret; 2598 nvlist_t *tgt; 2599 boolean_t avail_spare, l2cache, islog; 2600 uint64_t val; 2601 char *newname; 2602 nvlist_t **child; 2603 uint_t children; 2604 nvlist_t *config_root; 2605 libzfs_handle_t *hdl = zhp->zpool_hdl; 2606 boolean_t rootpool = zpool_is_bootable(zhp); 2607 2608 if (replacing) 2609 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2610 "cannot replace %s with %s"), old_disk, new_disk); 2611 else 2612 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2613 "cannot attach %s to %s"), new_disk, old_disk); 2614 2615 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2616 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache, 2617 &islog)) == 0) 2618 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2619 2620 if (avail_spare) 2621 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2622 2623 if (l2cache) 2624 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2625 2626 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2627 zc.zc_cookie = replacing; 2628 2629 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 2630 &child, &children) != 0 || children != 1) { 2631 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2632 "new device must be a single disk")); 2633 return (zfs_error(hdl, EZFS_INVALCONFIG, msg)); 2634 } 2635 2636 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 2637 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0); 2638 2639 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL) 2640 return (-1); 2641 2642 /* 2643 * If the target is a hot spare that has been swapped in, we can only 2644 * replace it with another hot spare. 2645 */ 2646 if (replacing && 2647 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 && 2648 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache, 2649 NULL) == NULL || !avail_spare) && 2650 is_replacing_spare(config_root, tgt, 1)) { 2651 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2652 "can only be replaced by another hot spare")); 2653 free(newname); 2654 return (zfs_error(hdl, EZFS_BADTARGET, msg)); 2655 } 2656 2657 free(newname); 2658 2659 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 2660 return (-1); 2661 2662 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc); 2663 2664 zcmd_free_nvlists(&zc); 2665 2666 if (ret == 0) { 2667 if (rootpool) { 2668 /* 2669 * XXX need a better way to prevent user from 2670 * booting up a half-baked vdev. 2671 */ 2672 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make " 2673 "sure to wait until resilver is done " 2674 "before rebooting.\n")); 2675 (void) fprintf(stderr, "\n"); 2676 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "If " 2677 "you boot from pool '%s', you may need to update\n" 2678 "boot code on newly attached disk '%s'.\n\n" 2679 "Assuming you use GPT partitioning and 'da0' is " 2680 "your new boot disk\n" 2681 "you may use the following command:\n\n" 2682 "\tgpart bootcode -b /boot/pmbr -p " 2683 "/boot/gptzfsboot -i 1 da0\n\n"), 2684 zhp->zpool_name, new_disk); 2685 } 2686 return (0); 2687 } 2688 2689 switch (errno) { 2690 case ENOTSUP: 2691 /* 2692 * Can't attach to or replace this type of vdev. 2693 */ 2694 if (replacing) { 2695 uint64_t version = zpool_get_prop_int(zhp, 2696 ZPOOL_PROP_VERSION, NULL); 2697 2698 if (islog) 2699 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2700 "cannot replace a log with a spare")); 2701 else if (version >= SPA_VERSION_MULTI_REPLACE) 2702 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2703 "already in replacing/spare config; wait " 2704 "for completion or use 'zpool detach'")); 2705 else 2706 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2707 "cannot replace a replacing device")); 2708 } else { 2709 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2710 "can only attach to mirrors and top-level " 2711 "disks")); 2712 } 2713 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2714 break; 2715 2716 case EINVAL: 2717 /* 2718 * The new device must be a single disk. 2719 */ 2720 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2721 "new device must be a single disk")); 2722 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg); 2723 break; 2724 2725 case EBUSY: 2726 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"), 2727 new_disk); 2728 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2729 break; 2730 2731 case EOVERFLOW: 2732 /* 2733 * The new device is too small. 2734 */ 2735 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2736 "device is too small")); 2737 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2738 break; 2739 2740 case EDOM: 2741 /* 2742 * The new device has a different alignment requirement. 2743 */ 2744 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2745 "devices have different sector alignment")); 2746 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2747 break; 2748 2749 case ENAMETOOLONG: 2750 /* 2751 * The resulting top-level vdev spec won't fit in the label. 2752 */ 2753 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg); 2754 break; 2755 2756 default: 2757 (void) zpool_standard_error(hdl, errno, msg); 2758 } 2759 2760 return (-1); 2761} 2762 2763/* 2764 * Detach the specified device. 2765 */ 2766int 2767zpool_vdev_detach(zpool_handle_t *zhp, const char *path) 2768{ 2769 zfs_cmd_t zc = { 0 }; 2770 char msg[1024]; 2771 nvlist_t *tgt; 2772 boolean_t avail_spare, l2cache; 2773 libzfs_handle_t *hdl = zhp->zpool_hdl; 2774 2775 (void) snprintf(msg, sizeof (msg), 2776 dgettext(TEXT_DOMAIN, "cannot detach %s"), path); 2777 2778 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2779 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2780 NULL)) == 0) 2781 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2782 2783 if (avail_spare) 2784 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2785 2786 if (l2cache) 2787 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2788 2789 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2790 2791 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0) 2792 return (0); 2793 2794 switch (errno) { 2795 2796 case ENOTSUP: 2797 /* 2798 * Can't detach from this type of vdev. 2799 */ 2800 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only " 2801 "applicable to mirror and replacing vdevs")); 2802 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2803 break; 2804 2805 case EBUSY: 2806 /* 2807 * There are no other replicas of this device. 2808 */ 2809 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg); 2810 break; 2811 2812 default: 2813 (void) zpool_standard_error(hdl, errno, msg); 2814 } 2815 2816 return (-1); 2817} 2818 2819/* 2820 * Find a mirror vdev in the source nvlist. 2821 * 2822 * The mchild array contains a list of disks in one of the top-level mirrors 2823 * of the source pool. The schild array contains a list of disks that the 2824 * user specified on the command line. We loop over the mchild array to 2825 * see if any entry in the schild array matches. 2826 * 2827 * If a disk in the mchild array is found in the schild array, we return 2828 * the index of that entry. Otherwise we return -1. 2829 */ 2830static int 2831find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren, 2832 nvlist_t **schild, uint_t schildren) 2833{ 2834 uint_t mc; 2835 2836 for (mc = 0; mc < mchildren; mc++) { 2837 uint_t sc; 2838 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2839 mchild[mc], B_FALSE); 2840 2841 for (sc = 0; sc < schildren; sc++) { 2842 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2843 schild[sc], B_FALSE); 2844 boolean_t result = (strcmp(mpath, spath) == 0); 2845 2846 free(spath); 2847 if (result) { 2848 free(mpath); 2849 return (mc); 2850 } 2851 } 2852 2853 free(mpath); 2854 } 2855 2856 return (-1); 2857} 2858 2859/* 2860 * Split a mirror pool. If newroot points to null, then a new nvlist 2861 * is generated and it is the responsibility of the caller to free it. 2862 */ 2863int 2864zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot, 2865 nvlist_t *props, splitflags_t flags) 2866{ 2867 zfs_cmd_t zc = { 0 }; 2868 char msg[1024]; 2869 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL; 2870 nvlist_t **varray = NULL, *zc_props = NULL; 2871 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0; 2872 libzfs_handle_t *hdl = zhp->zpool_hdl; 2873 uint64_t vers; 2874 boolean_t freelist = B_FALSE, memory_err = B_TRUE; 2875 int retval = 0; 2876 2877 (void) snprintf(msg, sizeof (msg), 2878 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name); 2879 2880 if (!zpool_name_valid(hdl, B_FALSE, newname)) 2881 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 2882 2883 if ((config = zpool_get_config(zhp, NULL)) == NULL) { 2884 (void) fprintf(stderr, gettext("Internal error: unable to " 2885 "retrieve pool configuration\n")); 2886 return (-1); 2887 } 2888 2889 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree) 2890 == 0); 2891 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0); 2892 2893 if (props) { 2894 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 2895 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name, 2896 props, vers, flags, msg)) == NULL) 2897 return (-1); 2898 } 2899 2900 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2901 &children) != 0) { 2902 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2903 "Source pool is missing vdev tree")); 2904 if (zc_props) 2905 nvlist_free(zc_props); 2906 return (-1); 2907 } 2908 2909 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *)); 2910 vcount = 0; 2911 2912 if (*newroot == NULL || 2913 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, 2914 &newchild, &newchildren) != 0) 2915 newchildren = 0; 2916 2917 for (c = 0; c < children; c++) { 2918 uint64_t is_log = B_FALSE, is_hole = B_FALSE; 2919 char *type; 2920 nvlist_t **mchild, *vdev; 2921 uint_t mchildren; 2922 int entry; 2923 2924 /* 2925 * Unlike cache & spares, slogs are stored in the 2926 * ZPOOL_CONFIG_CHILDREN array. We filter them out here. 2927 */ 2928 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 2929 &is_log); 2930 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, 2931 &is_hole); 2932 if (is_log || is_hole) { 2933 /* 2934 * Create a hole vdev and put it in the config. 2935 */ 2936 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0) 2937 goto out; 2938 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, 2939 VDEV_TYPE_HOLE) != 0) 2940 goto out; 2941 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE, 2942 1) != 0) 2943 goto out; 2944 if (lastlog == 0) 2945 lastlog = vcount; 2946 varray[vcount++] = vdev; 2947 continue; 2948 } 2949 lastlog = 0; 2950 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type) 2951 == 0); 2952 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) { 2953 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2954 "Source pool must be composed only of mirrors\n")); 2955 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2956 goto out; 2957 } 2958 2959 verify(nvlist_lookup_nvlist_array(child[c], 2960 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2961 2962 /* find or add an entry for this top-level vdev */ 2963 if (newchildren > 0 && 2964 (entry = find_vdev_entry(zhp, mchild, mchildren, 2965 newchild, newchildren)) >= 0) { 2966 /* We found a disk that the user specified. */ 2967 vdev = mchild[entry]; 2968 ++found; 2969 } else { 2970 /* User didn't specify a disk for this vdev. */ 2971 vdev = mchild[mchildren - 1]; 2972 } 2973 2974 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0) 2975 goto out; 2976 } 2977 2978 /* did we find every disk the user specified? */ 2979 if (found != newchildren) { 2980 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must " 2981 "include at most one disk from each mirror")); 2982 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2983 goto out; 2984 } 2985 2986 /* Prepare the nvlist for populating. */ 2987 if (*newroot == NULL) { 2988 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0) 2989 goto out; 2990 freelist = B_TRUE; 2991 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE, 2992 VDEV_TYPE_ROOT) != 0) 2993 goto out; 2994 } else { 2995 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0); 2996 } 2997 2998 /* Add all the children we found */ 2999 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray, 3000 lastlog == 0 ? vcount : lastlog) != 0) 3001 goto out; 3002 3003 /* 3004 * If we're just doing a dry run, exit now with success. 3005 */ 3006 if (flags.dryrun) { 3007 memory_err = B_FALSE; 3008 freelist = B_FALSE; 3009 goto out; 3010 } 3011 3012 /* now build up the config list & call the ioctl */ 3013 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0) 3014 goto out; 3015 3016 if (nvlist_add_nvlist(newconfig, 3017 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 || 3018 nvlist_add_string(newconfig, 3019 ZPOOL_CONFIG_POOL_NAME, newname) != 0 || 3020 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0) 3021 goto out; 3022 3023 /* 3024 * The new pool is automatically part of the namespace unless we 3025 * explicitly export it. 3026 */ 3027 if (!flags.import) 3028 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT; 3029 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3030 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string)); 3031 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0) 3032 goto out; 3033 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 3034 goto out; 3035 3036 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) { 3037 retval = zpool_standard_error(hdl, errno, msg); 3038 goto out; 3039 } 3040 3041 freelist = B_FALSE; 3042 memory_err = B_FALSE; 3043 3044out: 3045 if (varray != NULL) { 3046 int v; 3047 3048 for (v = 0; v < vcount; v++) 3049 nvlist_free(varray[v]); 3050 free(varray); 3051 } 3052 zcmd_free_nvlists(&zc); 3053 if (zc_props) 3054 nvlist_free(zc_props); 3055 if (newconfig) 3056 nvlist_free(newconfig); 3057 if (freelist) { 3058 nvlist_free(*newroot); 3059 *newroot = NULL; 3060 } 3061 3062 if (retval != 0) 3063 return (retval); 3064 3065 if (memory_err) 3066 return (no_memory(hdl)); 3067 3068 return (0); 3069} 3070 3071/* 3072 * Remove the given device. Currently, this is supported only for hot spares 3073 * and level 2 cache devices. 3074 */ 3075int 3076zpool_vdev_remove(zpool_handle_t *zhp, const char *path) 3077{ 3078 zfs_cmd_t zc = { 0 }; 3079 char msg[1024]; 3080 nvlist_t *tgt; 3081 boolean_t avail_spare, l2cache, islog; 3082 libzfs_handle_t *hdl = zhp->zpool_hdl; 3083 uint64_t version; 3084 3085 (void) snprintf(msg, sizeof (msg), 3086 dgettext(TEXT_DOMAIN, "cannot remove %s"), path); 3087 3088 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3089 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 3090 &islog)) == 0) 3091 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3092 /* 3093 * XXX - this should just go away. 3094 */ 3095 if (!avail_spare && !l2cache && !islog) { 3096 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3097 "only inactive hot spares, cache, top-level, " 3098 "or log devices can be removed")); 3099 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3100 } 3101 3102 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 3103 if (islog && version < SPA_VERSION_HOLES) { 3104 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3105 "pool must be upgrade to support log removal")); 3106 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 3107 } 3108 3109 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 3110 3111 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0) 3112 return (0); 3113 3114 return (zpool_standard_error(hdl, errno, msg)); 3115} 3116 3117/* 3118 * Clear the errors for the pool, or the particular device if specified. 3119 */ 3120int 3121zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) 3122{ 3123 zfs_cmd_t zc = { 0 }; 3124 char msg[1024]; 3125 nvlist_t *tgt; 3126 zpool_rewind_policy_t policy; 3127 boolean_t avail_spare, l2cache; 3128 libzfs_handle_t *hdl = zhp->zpool_hdl; 3129 nvlist_t *nvi = NULL; 3130 int error; 3131 3132 if (path) 3133 (void) snprintf(msg, sizeof (msg), 3134 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3135 path); 3136 else 3137 (void) snprintf(msg, sizeof (msg), 3138 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3139 zhp->zpool_name); 3140 3141 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3142 if (path) { 3143 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, 3144 &l2cache, NULL)) == 0) 3145 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3146 3147 /* 3148 * Don't allow error clearing for hot spares. Do allow 3149 * error clearing for l2cache devices. 3150 */ 3151 if (avail_spare) 3152 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 3153 3154 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, 3155 &zc.zc_guid) == 0); 3156 } 3157 3158 zpool_get_rewind_policy(rewindnvl, &policy); 3159 zc.zc_cookie = policy.zrp_request; 3160 3161 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0) 3162 return (-1); 3163 3164 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0) 3165 return (-1); 3166 3167 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 && 3168 errno == ENOMEM) { 3169 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 3170 zcmd_free_nvlists(&zc); 3171 return (-1); 3172 } 3173 } 3174 3175 if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) && 3176 errno != EPERM && errno != EACCES)) { 3177 if (policy.zrp_request & 3178 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 3179 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 3180 zpool_rewind_exclaim(hdl, zc.zc_name, 3181 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), 3182 nvi); 3183 nvlist_free(nvi); 3184 } 3185 zcmd_free_nvlists(&zc); 3186 return (0); 3187 } 3188 3189 zcmd_free_nvlists(&zc); 3190 return (zpool_standard_error(hdl, errno, msg)); 3191} 3192 3193/* 3194 * Similar to zpool_clear(), but takes a GUID (used by fmd). 3195 */ 3196int 3197zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid) 3198{ 3199 zfs_cmd_t zc = { 0 }; 3200 char msg[1024]; 3201 libzfs_handle_t *hdl = zhp->zpool_hdl; 3202 3203 (void) snprintf(msg, sizeof (msg), 3204 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"), 3205 guid); 3206 3207 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3208 zc.zc_guid = guid; 3209 zc.zc_cookie = ZPOOL_NO_REWIND; 3210 3211 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0) 3212 return (0); 3213 3214 return (zpool_standard_error(hdl, errno, msg)); 3215} 3216 3217/* 3218 * Change the GUID for a pool. 3219 */ 3220int 3221zpool_reguid(zpool_handle_t *zhp) 3222{ 3223 char msg[1024]; 3224 libzfs_handle_t *hdl = zhp->zpool_hdl; 3225 zfs_cmd_t zc = { 0 }; 3226 3227 (void) snprintf(msg, sizeof (msg), 3228 dgettext(TEXT_DOMAIN, "cannot reguid '%s'"), zhp->zpool_name); 3229 3230 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3231 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REGUID, &zc) == 0) 3232 return (0); 3233 3234 return (zpool_standard_error(hdl, errno, msg)); 3235} 3236 3237/* 3238 * Reopen the pool. 3239 */ 3240int 3241zpool_reopen(zpool_handle_t *zhp) 3242{ 3243 zfs_cmd_t zc = { 0 }; 3244 char msg[1024]; 3245 libzfs_handle_t *hdl = zhp->zpool_hdl; 3246 3247 (void) snprintf(msg, sizeof (msg), 3248 dgettext(TEXT_DOMAIN, "cannot reopen '%s'"), 3249 zhp->zpool_name); 3250 3251 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3252 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REOPEN, &zc) == 0) 3253 return (0); 3254 return (zpool_standard_error(hdl, errno, msg)); 3255} 3256 3257/* 3258 * Convert from a devid string to a path. 3259 */ 3260static char * 3261devid_to_path(char *devid_str) 3262{ 3263 ddi_devid_t devid; 3264 char *minor; 3265 char *path; 3266 devid_nmlist_t *list = NULL; 3267 int ret; 3268 3269 if (devid_str_decode(devid_str, &devid, &minor) != 0) 3270 return (NULL); 3271 3272 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list); 3273 3274 devid_str_free(minor); 3275 devid_free(devid); 3276 3277 if (ret != 0) 3278 return (NULL); 3279 3280 /* 3281 * In a case the strdup() fails, we will just return NULL below. 3282 */ 3283 path = strdup(list[0].devname); 3284 3285 devid_free_nmlist(list); 3286 3287 return (path); 3288} 3289 3290/* 3291 * Convert from a path to a devid string. 3292 */ 3293static char * 3294path_to_devid(const char *path) 3295{ 3296#ifdef have_devid 3297 int fd; 3298 ddi_devid_t devid; 3299 char *minor, *ret; 3300 3301 if ((fd = open(path, O_RDONLY)) < 0) 3302 return (NULL); 3303 3304 minor = NULL; 3305 ret = NULL; 3306 if (devid_get(fd, &devid) == 0) { 3307 if (devid_get_minor_name(fd, &minor) == 0) 3308 ret = devid_str_encode(devid, minor); 3309 if (minor != NULL) 3310 devid_str_free(minor); 3311 devid_free(devid); 3312 } 3313 (void) close(fd); 3314 3315 return (ret); 3316#else 3317 return (NULL); 3318#endif 3319} 3320 3321/* 3322 * Issue the necessary ioctl() to update the stored path value for the vdev. We 3323 * ignore any failure here, since a common case is for an unprivileged user to 3324 * type 'zpool status', and we'll display the correct information anyway. 3325 */ 3326static void 3327set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path) 3328{ 3329 zfs_cmd_t zc = { 0 }; 3330 3331 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3332 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value)); 3333 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3334 &zc.zc_guid) == 0); 3335 3336 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc); 3337} 3338 3339/* 3340 * Given a vdev, return the name to display in iostat. If the vdev has a path, 3341 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type. 3342 * We also check if this is a whole disk, in which case we strip off the 3343 * trailing 's0' slice name. 3344 * 3345 * This routine is also responsible for identifying when disks have been 3346 * reconfigured in a new location. The kernel will have opened the device by 3347 * devid, but the path will still refer to the old location. To catch this, we 3348 * first do a path -> devid translation (which is fast for the common case). If 3349 * the devid matches, we're done. If not, we do a reverse devid -> path 3350 * translation and issue the appropriate ioctl() to update the path of the vdev. 3351 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any 3352 * of these checks. 3353 */ 3354char * 3355zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv, 3356 boolean_t verbose) 3357{ 3358 char *path, *devid; 3359 uint64_t value; 3360 char buf[64]; 3361 vdev_stat_t *vs; 3362 uint_t vsc; 3363 int have_stats; 3364 int have_path; 3365 3366 have_stats = nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 3367 (uint64_t **)&vs, &vsc) == 0; 3368 have_path = nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0; 3369 3370 /* 3371 * If the device is not currently present, assume it will not 3372 * come back at the same device path. Display the device by GUID. 3373 */ 3374 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &value) == 0 || 3375 have_path && have_stats && vs->vs_state <= VDEV_STATE_CANT_OPEN) { 3376 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3377 &value) == 0); 3378 (void) snprintf(buf, sizeof (buf), "%llu", 3379 (u_longlong_t)value); 3380 path = buf; 3381 } else if (have_path) { 3382 3383 /* 3384 * If the device is dead (faulted, offline, etc) then don't 3385 * bother opening it. Otherwise we may be forcing the user to 3386 * open a misbehaving device, which can have undesirable 3387 * effects. 3388 */ 3389 if ((have_stats == 0 || 3390 vs->vs_state >= VDEV_STATE_DEGRADED) && 3391 zhp != NULL && 3392 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) { 3393 /* 3394 * Determine if the current path is correct. 3395 */ 3396 char *newdevid = path_to_devid(path); 3397 3398 if (newdevid == NULL || 3399 strcmp(devid, newdevid) != 0) { 3400 char *newpath; 3401 3402 if ((newpath = devid_to_path(devid)) != NULL) { 3403 /* 3404 * Update the path appropriately. 3405 */ 3406 set_path(zhp, nv, newpath); 3407 if (nvlist_add_string(nv, 3408 ZPOOL_CONFIG_PATH, newpath) == 0) 3409 verify(nvlist_lookup_string(nv, 3410 ZPOOL_CONFIG_PATH, 3411 &path) == 0); 3412 free(newpath); 3413 } 3414 } 3415 3416 if (newdevid) 3417 devid_str_free(newdevid); 3418 } 3419 3420#ifdef illumos 3421 if (strncmp(path, "/dev/dsk/", 9) == 0) 3422 path += 9; 3423 3424 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 3425 &value) == 0 && value) { 3426 int pathlen = strlen(path); 3427 char *tmp = zfs_strdup(hdl, path); 3428 3429 /* 3430 * If it starts with c#, and ends with "s0", chop 3431 * the "s0" off, or if it ends with "s0/old", remove 3432 * the "s0" from the middle. 3433 */ 3434 if (CTD_CHECK(tmp)) { 3435 if (strcmp(&tmp[pathlen - 2], "s0") == 0) { 3436 tmp[pathlen - 2] = '\0'; 3437 } else if (pathlen > 6 && 3438 strcmp(&tmp[pathlen - 6], "s0/old") == 0) { 3439 (void) strcpy(&tmp[pathlen - 6], 3440 "/old"); 3441 } 3442 } 3443 return (tmp); 3444 } 3445#else /* !illumos */ 3446 if (strncmp(path, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 3447 path += sizeof(_PATH_DEV) - 1; 3448#endif /* illumos */ 3449 } else { 3450 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0); 3451 3452 /* 3453 * If it's a raidz device, we need to stick in the parity level. 3454 */ 3455 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) { 3456 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, 3457 &value) == 0); 3458 (void) snprintf(buf, sizeof (buf), "%s%llu", path, 3459 (u_longlong_t)value); 3460 path = buf; 3461 } 3462 3463 /* 3464 * We identify each top-level vdev by using a <type-id> 3465 * naming convention. 3466 */ 3467 if (verbose) { 3468 uint64_t id; 3469 3470 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 3471 &id) == 0); 3472 (void) snprintf(buf, sizeof (buf), "%s-%llu", path, 3473 (u_longlong_t)id); 3474 path = buf; 3475 } 3476 } 3477 3478 return (zfs_strdup(hdl, path)); 3479} 3480 3481static int 3482zbookmark_mem_compare(const void *a, const void *b) 3483{ 3484 return (memcmp(a, b, sizeof (zbookmark_phys_t))); 3485} 3486 3487/* 3488 * Retrieve the persistent error log, uniquify the members, and return to the 3489 * caller. 3490 */ 3491int 3492zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp) 3493{ 3494 zfs_cmd_t zc = { 0 }; 3495 uint64_t count; 3496 zbookmark_phys_t *zb = NULL; 3497 int i; 3498 3499 /* 3500 * Retrieve the raw error list from the kernel. If the number of errors 3501 * has increased, allocate more space and continue until we get the 3502 * entire list. 3503 */ 3504 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT, 3505 &count) == 0); 3506 if (count == 0) 3507 return (0); 3508 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl, 3509 count * sizeof (zbookmark_phys_t))) == (uintptr_t)NULL) 3510 return (-1); 3511 zc.zc_nvlist_dst_size = count; 3512 (void) strcpy(zc.zc_name, zhp->zpool_name); 3513 for (;;) { 3514 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG, 3515 &zc) != 0) { 3516 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3517 if (errno == ENOMEM) { 3518 void *dst; 3519 3520 count = zc.zc_nvlist_dst_size; 3521 dst = zfs_alloc(zhp->zpool_hdl, count * 3522 sizeof (zbookmark_phys_t)); 3523 if (dst == NULL) 3524 return (-1); 3525 zc.zc_nvlist_dst = (uintptr_t)dst; 3526 } else { 3527 return (-1); 3528 } 3529 } else { 3530 break; 3531 } 3532 } 3533 3534 /* 3535 * Sort the resulting bookmarks. This is a little confusing due to the 3536 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last 3537 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks 3538 * _not_ copied as part of the process. So we point the start of our 3539 * array appropriate and decrement the total number of elements. 3540 */ 3541 zb = ((zbookmark_phys_t *)(uintptr_t)zc.zc_nvlist_dst) + 3542 zc.zc_nvlist_dst_size; 3543 count -= zc.zc_nvlist_dst_size; 3544 3545 qsort(zb, count, sizeof (zbookmark_phys_t), zbookmark_mem_compare); 3546 3547 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0); 3548 3549 /* 3550 * Fill in the nverrlistp with nvlist's of dataset and object numbers. 3551 */ 3552 for (i = 0; i < count; i++) { 3553 nvlist_t *nv; 3554 3555 /* ignoring zb_blkid and zb_level for now */ 3556 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset && 3557 zb[i-1].zb_object == zb[i].zb_object) 3558 continue; 3559 3560 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0) 3561 goto nomem; 3562 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET, 3563 zb[i].zb_objset) != 0) { 3564 nvlist_free(nv); 3565 goto nomem; 3566 } 3567 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT, 3568 zb[i].zb_object) != 0) { 3569 nvlist_free(nv); 3570 goto nomem; 3571 } 3572 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) { 3573 nvlist_free(nv); 3574 goto nomem; 3575 } 3576 nvlist_free(nv); 3577 } 3578 3579 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3580 return (0); 3581 3582nomem: 3583 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3584 return (no_memory(zhp->zpool_hdl)); 3585} 3586 3587/* 3588 * Upgrade a ZFS pool to the latest on-disk version. 3589 */ 3590int 3591zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version) 3592{ 3593 zfs_cmd_t zc = { 0 }; 3594 libzfs_handle_t *hdl = zhp->zpool_hdl; 3595 3596 (void) strcpy(zc.zc_name, zhp->zpool_name); 3597 zc.zc_cookie = new_version; 3598 3599 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0) 3600 return (zpool_standard_error_fmt(hdl, errno, 3601 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"), 3602 zhp->zpool_name)); 3603 return (0); 3604} 3605 3606void 3607zfs_save_arguments(int argc, char **argv, char *string, int len) 3608{ 3609 (void) strlcpy(string, basename(argv[0]), len); 3610 for (int i = 1; i < argc; i++) { 3611 (void) strlcat(string, " ", len); 3612 (void) strlcat(string, argv[i], len); 3613 } 3614} 3615 3616int 3617zpool_log_history(libzfs_handle_t *hdl, const char *message) 3618{ 3619 zfs_cmd_t zc = { 0 }; 3620 nvlist_t *args; 3621 int err; 3622 3623 args = fnvlist_alloc(); 3624 fnvlist_add_string(args, "message", message); 3625 err = zcmd_write_src_nvlist(hdl, &zc, args); 3626 if (err == 0) 3627 err = ioctl(hdl->libzfs_fd, ZFS_IOC_LOG_HISTORY, &zc); 3628 nvlist_free(args); 3629 zcmd_free_nvlists(&zc); 3630 return (err); 3631} 3632 3633/* 3634 * Perform ioctl to get some command history of a pool. 3635 * 3636 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the 3637 * logical offset of the history buffer to start reading from. 3638 * 3639 * Upon return, 'off' is the next logical offset to read from and 3640 * 'len' is the actual amount of bytes read into 'buf'. 3641 */ 3642static int 3643get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len) 3644{ 3645 zfs_cmd_t zc = { 0 }; 3646 libzfs_handle_t *hdl = zhp->zpool_hdl; 3647 3648 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3649 3650 zc.zc_history = (uint64_t)(uintptr_t)buf; 3651 zc.zc_history_len = *len; 3652 zc.zc_history_offset = *off; 3653 3654 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) { 3655 switch (errno) { 3656 case EPERM: 3657 return (zfs_error_fmt(hdl, EZFS_PERM, 3658 dgettext(TEXT_DOMAIN, 3659 "cannot show history for pool '%s'"), 3660 zhp->zpool_name)); 3661 case ENOENT: 3662 return (zfs_error_fmt(hdl, EZFS_NOHISTORY, 3663 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3664 "'%s'"), zhp->zpool_name)); 3665 case ENOTSUP: 3666 return (zfs_error_fmt(hdl, EZFS_BADVERSION, 3667 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3668 "'%s', pool must be upgraded"), zhp->zpool_name)); 3669 default: 3670 return (zpool_standard_error_fmt(hdl, errno, 3671 dgettext(TEXT_DOMAIN, 3672 "cannot get history for '%s'"), zhp->zpool_name)); 3673 } 3674 } 3675 3676 *len = zc.zc_history_len; 3677 *off = zc.zc_history_offset; 3678 3679 return (0); 3680} 3681 3682/* 3683 * Process the buffer of nvlists, unpacking and storing each nvlist record 3684 * into 'records'. 'leftover' is set to the number of bytes that weren't 3685 * processed as there wasn't a complete record. 3686 */ 3687int 3688zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover, 3689 nvlist_t ***records, uint_t *numrecords) 3690{ 3691 uint64_t reclen; 3692 nvlist_t *nv; 3693 int i; 3694 3695 while (bytes_read > sizeof (reclen)) { 3696 3697 /* get length of packed record (stored as little endian) */ 3698 for (i = 0, reclen = 0; i < sizeof (reclen); i++) 3699 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i); 3700 3701 if (bytes_read < sizeof (reclen) + reclen) 3702 break; 3703 3704 /* unpack record */ 3705 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0) 3706 return (ENOMEM); 3707 bytes_read -= sizeof (reclen) + reclen; 3708 buf += sizeof (reclen) + reclen; 3709 3710 /* add record to nvlist array */ 3711 (*numrecords)++; 3712 if (ISP2(*numrecords + 1)) { 3713 *records = realloc(*records, 3714 *numrecords * 2 * sizeof (nvlist_t *)); 3715 } 3716 (*records)[*numrecords - 1] = nv; 3717 } 3718 3719 *leftover = bytes_read; 3720 return (0); 3721} 3722 3723/* from spa_history.c: spa_history_create_obj() */ 3724#define HIS_BUF_LEN_DEF (128 << 10) 3725#define HIS_BUF_LEN_MAX (1 << 30) 3726 3727/* 3728 * Retrieve the command history of a pool. 3729 */ 3730int 3731zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp) 3732{ 3733 char *buf; 3734 uint64_t buflen = HIS_BUF_LEN_DEF; 3735 uint64_t off = 0; 3736 nvlist_t **records = NULL; 3737 uint_t numrecords = 0; 3738 int err, i; 3739 3740 buf = malloc(buflen); 3741 if (buf == NULL) 3742 return (ENOMEM); 3743 do { 3744 uint64_t bytes_read = buflen; 3745 uint64_t leftover; 3746 3747 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0) 3748 break; 3749 3750 /* if nothing else was read in, we're at EOF, just return */ 3751 if (bytes_read == 0) 3752 break; 3753 3754 if ((err = zpool_history_unpack(buf, bytes_read, 3755 &leftover, &records, &numrecords)) != 0) 3756 break; 3757 off -= leftover; 3758 if (leftover == bytes_read) { 3759 /* 3760 * no progress made, because buffer is not big enough 3761 * to hold this record; resize and retry. 3762 */ 3763 buflen *= 2; 3764 free(buf); 3765 buf = NULL; 3766 if ((buflen >= HIS_BUF_LEN_MAX) || 3767 ((buf = malloc(buflen)) == NULL)) { 3768 err = ENOMEM; 3769 break; 3770 } 3771 } 3772 3773 /* CONSTCOND */ 3774 } while (1); 3775 3776 free(buf); 3777 3778 if (!err) { 3779 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0); 3780 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD, 3781 records, numrecords) == 0); 3782 } 3783 for (i = 0; i < numrecords; i++) 3784 nvlist_free(records[i]); 3785 free(records); 3786 3787 return (err); 3788} 3789 3790void 3791zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj, 3792 char *pathname, size_t len) 3793{ 3794 zfs_cmd_t zc = { 0 }; 3795 boolean_t mounted = B_FALSE; 3796 char *mntpnt = NULL; 3797 char dsname[MAXNAMELEN]; 3798 3799 if (dsobj == 0) { 3800 /* special case for the MOS */ 3801 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", obj); 3802 return; 3803 } 3804 3805 /* get the dataset's name */ 3806 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3807 zc.zc_obj = dsobj; 3808 if (ioctl(zhp->zpool_hdl->libzfs_fd, 3809 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) { 3810 /* just write out a path of two object numbers */ 3811 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>", 3812 dsobj, obj); 3813 return; 3814 } 3815 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname)); 3816 3817 /* find out if the dataset is mounted */ 3818 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt); 3819 3820 /* get the corrupted object's path */ 3821 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name)); 3822 zc.zc_obj = obj; 3823 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH, 3824 &zc) == 0) { 3825 if (mounted) { 3826 (void) snprintf(pathname, len, "%s%s", mntpnt, 3827 zc.zc_value); 3828 } else { 3829 (void) snprintf(pathname, len, "%s:%s", 3830 dsname, zc.zc_value); 3831 } 3832 } else { 3833 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, obj); 3834 } 3835 free(mntpnt); 3836} 3837 3838#ifdef illumos 3839/* 3840 * Read the EFI label from the config, if a label does not exist then 3841 * pass back the error to the caller. If the caller has passed a non-NULL 3842 * diskaddr argument then we set it to the starting address of the EFI 3843 * partition. 3844 */ 3845static int 3846read_efi_label(nvlist_t *config, diskaddr_t *sb) 3847{ 3848 char *path; 3849 int fd; 3850 char diskname[MAXPATHLEN]; 3851 int err = -1; 3852 3853 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0) 3854 return (err); 3855 3856 (void) snprintf(diskname, sizeof (diskname), "%s%s", RDISK_ROOT, 3857 strrchr(path, '/')); 3858 if ((fd = open(diskname, O_RDONLY|O_NDELAY)) >= 0) { 3859 struct dk_gpt *vtoc; 3860 3861 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) { 3862 if (sb != NULL) 3863 *sb = vtoc->efi_parts[0].p_start; 3864 efi_free(vtoc); 3865 } 3866 (void) close(fd); 3867 } 3868 return (err); 3869} 3870 3871/* 3872 * determine where a partition starts on a disk in the current 3873 * configuration 3874 */ 3875static diskaddr_t 3876find_start_block(nvlist_t *config) 3877{ 3878 nvlist_t **child; 3879 uint_t c, children; 3880 diskaddr_t sb = MAXOFFSET_T; 3881 uint64_t wholedisk; 3882 3883 if (nvlist_lookup_nvlist_array(config, 3884 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) { 3885 if (nvlist_lookup_uint64(config, 3886 ZPOOL_CONFIG_WHOLE_DISK, 3887 &wholedisk) != 0 || !wholedisk) { 3888 return (MAXOFFSET_T); 3889 } 3890 if (read_efi_label(config, &sb) < 0) 3891 sb = MAXOFFSET_T; 3892 return (sb); 3893 } 3894 3895 for (c = 0; c < children; c++) { 3896 sb = find_start_block(child[c]); 3897 if (sb != MAXOFFSET_T) { 3898 return (sb); 3899 } 3900 } 3901 return (MAXOFFSET_T); 3902} 3903#endif /* illumos */ 3904 3905/* 3906 * Label an individual disk. The name provided is the short name, 3907 * stripped of any leading /dev path. 3908 */ 3909int 3910zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name) 3911{ 3912#ifdef illumos 3913 char path[MAXPATHLEN]; 3914 struct dk_gpt *vtoc; 3915 int fd; 3916 size_t resv = EFI_MIN_RESV_SIZE; 3917 uint64_t slice_size; 3918 diskaddr_t start_block; 3919 char errbuf[1024]; 3920 3921 /* prepare an error message just in case */ 3922 (void) snprintf(errbuf, sizeof (errbuf), 3923 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name); 3924 3925 if (zhp) { 3926 nvlist_t *nvroot; 3927 3928 verify(nvlist_lookup_nvlist(zhp->zpool_config, 3929 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 3930 3931 if (zhp->zpool_start_block == 0) 3932 start_block = find_start_block(nvroot); 3933 else 3934 start_block = zhp->zpool_start_block; 3935 zhp->zpool_start_block = start_block; 3936 } else { 3937 /* new pool */ 3938 start_block = NEW_START_BLOCK; 3939 } 3940 3941 (void) snprintf(path, sizeof (path), "%s/%s%s", RDISK_ROOT, name, 3942 BACKUP_SLICE); 3943 3944 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 3945 /* 3946 * This shouldn't happen. We've long since verified that this 3947 * is a valid device. 3948 */ 3949 zfs_error_aux(hdl, 3950 dgettext(TEXT_DOMAIN, "unable to open device")); 3951 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 3952 } 3953 3954 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) { 3955 /* 3956 * The only way this can fail is if we run out of memory, or we 3957 * were unable to read the disk's capacity 3958 */ 3959 if (errno == ENOMEM) 3960 (void) no_memory(hdl); 3961 3962 (void) close(fd); 3963 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3964 "unable to read disk capacity"), name); 3965 3966 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 3967 } 3968 3969 slice_size = vtoc->efi_last_u_lba + 1; 3970 slice_size -= EFI_MIN_RESV_SIZE; 3971 if (start_block == MAXOFFSET_T) 3972 start_block = NEW_START_BLOCK; 3973 slice_size -= start_block; 3974 3975 vtoc->efi_parts[0].p_start = start_block; 3976 vtoc->efi_parts[0].p_size = slice_size; 3977 3978 /* 3979 * Why we use V_USR: V_BACKUP confuses users, and is considered 3980 * disposable by some EFI utilities (since EFI doesn't have a backup 3981 * slice). V_UNASSIGNED is supposed to be used only for zero size 3982 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT, 3983 * etc. were all pretty specific. V_USR is as close to reality as we 3984 * can get, in the absence of V_OTHER. 3985 */ 3986 vtoc->efi_parts[0].p_tag = V_USR; 3987 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs"); 3988 3989 vtoc->efi_parts[8].p_start = slice_size + start_block; 3990 vtoc->efi_parts[8].p_size = resv; 3991 vtoc->efi_parts[8].p_tag = V_RESERVED; 3992 3993 if (efi_write(fd, vtoc) != 0) { 3994 /* 3995 * Some block drivers (like pcata) may not support EFI 3996 * GPT labels. Print out a helpful error message dir- 3997 * ecting the user to manually label the disk and give 3998 * a specific slice. 3999 */ 4000 (void) close(fd); 4001 efi_free(vtoc); 4002 4003 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4004 "try using fdisk(1M) and then provide a specific slice")); 4005 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf)); 4006 } 4007 4008 (void) close(fd); 4009 efi_free(vtoc); 4010#endif /* illumos */ 4011 return (0); 4012} 4013 4014static boolean_t 4015supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf) 4016{ 4017 char *type; 4018 nvlist_t **child; 4019 uint_t children, c; 4020 4021 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_TYPE, &type) == 0); 4022 if (strcmp(type, VDEV_TYPE_FILE) == 0 || 4023 strcmp(type, VDEV_TYPE_HOLE) == 0 || 4024 strcmp(type, VDEV_TYPE_MISSING) == 0) { 4025 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4026 "vdev type '%s' is not supported"), type); 4027 (void) zfs_error(hdl, EZFS_VDEVNOTSUP, errbuf); 4028 return (B_FALSE); 4029 } 4030 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN, 4031 &child, &children) == 0) { 4032 for (c = 0; c < children; c++) { 4033 if (!supported_dump_vdev_type(hdl, child[c], errbuf)) 4034 return (B_FALSE); 4035 } 4036 } 4037 return (B_TRUE); 4038} 4039 4040/* 4041 * Check if this zvol is allowable for use as a dump device; zero if 4042 * it is, > 0 if it isn't, < 0 if it isn't a zvol. 4043 * 4044 * Allowable storage configurations include mirrors, all raidz variants, and 4045 * pools with log, cache, and spare devices. Pools which are backed by files or 4046 * have missing/hole vdevs are not suitable. 4047 */ 4048int 4049zvol_check_dump_config(char *arg) 4050{ 4051 zpool_handle_t *zhp = NULL; 4052 nvlist_t *config, *nvroot; 4053 char *p, *volname; 4054 nvlist_t **top; 4055 uint_t toplevels; 4056 libzfs_handle_t *hdl; 4057 char errbuf[1024]; 4058 char poolname[ZPOOL_MAXNAMELEN]; 4059 int pathlen = strlen(ZVOL_FULL_DEV_DIR); 4060 int ret = 1; 4061 4062 if (strncmp(arg, ZVOL_FULL_DEV_DIR, pathlen)) { 4063 return (-1); 4064 } 4065 4066 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4067 "dump is not supported on device '%s'"), arg); 4068 4069 if ((hdl = libzfs_init()) == NULL) 4070 return (1); 4071 libzfs_print_on_error(hdl, B_TRUE); 4072 4073 volname = arg + pathlen; 4074 4075 /* check the configuration of the pool */ 4076 if ((p = strchr(volname, '/')) == NULL) { 4077 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4078 "malformed dataset name")); 4079 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 4080 return (1); 4081 } else if (p - volname >= ZFS_MAXNAMELEN) { 4082 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4083 "dataset name is too long")); 4084 (void) zfs_error(hdl, EZFS_NAMETOOLONG, errbuf); 4085 return (1); 4086 } else { 4087 (void) strncpy(poolname, volname, p - volname); 4088 poolname[p - volname] = '\0'; 4089 } 4090 4091 if ((zhp = zpool_open(hdl, poolname)) == NULL) { 4092 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4093 "could not open pool '%s'"), poolname); 4094 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 4095 goto out; 4096 } 4097 config = zpool_get_config(zhp, NULL); 4098 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 4099 &nvroot) != 0) { 4100 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4101 "could not obtain vdev configuration for '%s'"), poolname); 4102 (void) zfs_error(hdl, EZFS_INVALCONFIG, errbuf); 4103 goto out; 4104 } 4105 4106 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 4107 &top, &toplevels) == 0); 4108 4109 if (!supported_dump_vdev_type(hdl, top[0], errbuf)) { 4110 goto out; 4111 } 4112 ret = 0; 4113 4114out: 4115 if (zhp) 4116 zpool_close(zhp); 4117 libzfs_fini(hdl); 4118 return (ret); 4119} 4120