libzfs_pool.c revision 307058
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 25 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 26 * Copyright 2016 Nexenta Systems, Inc. 27 * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com> 28 */ 29 30#include <sys/types.h> 31#include <sys/stat.h> 32#include <ctype.h> 33#include <errno.h> 34#include <devid.h> 35#include <fcntl.h> 36#include <libintl.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <strings.h> 40#include <unistd.h> 41#include <libgen.h> 42#include <sys/zfs_ioctl.h> 43#include <dlfcn.h> 44 45#include "zfs_namecheck.h" 46#include "zfs_prop.h" 47#include "libzfs_impl.h" 48#include "zfs_comutil.h" 49#include "zfeature_common.h" 50 51static int read_efi_label(nvlist_t *config, diskaddr_t *sb); 52 53#define BACKUP_SLICE "s2" 54 55typedef struct prop_flags { 56 int create:1; /* Validate property on creation */ 57 int import:1; /* Validate property on import */ 58} prop_flags_t; 59 60/* 61 * ==================================================================== 62 * zpool property functions 63 * ==================================================================== 64 */ 65 66static int 67zpool_get_all_props(zpool_handle_t *zhp) 68{ 69 zfs_cmd_t zc = { 0 }; 70 libzfs_handle_t *hdl = zhp->zpool_hdl; 71 72 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 73 74 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) 75 return (-1); 76 77 while (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) { 78 if (errno == ENOMEM) { 79 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 80 zcmd_free_nvlists(&zc); 81 return (-1); 82 } 83 } else { 84 zcmd_free_nvlists(&zc); 85 return (-1); 86 } 87 } 88 89 if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zpool_props) != 0) { 90 zcmd_free_nvlists(&zc); 91 return (-1); 92 } 93 94 zcmd_free_nvlists(&zc); 95 96 return (0); 97} 98 99static int 100zpool_props_refresh(zpool_handle_t *zhp) 101{ 102 nvlist_t *old_props; 103 104 old_props = zhp->zpool_props; 105 106 if (zpool_get_all_props(zhp) != 0) 107 return (-1); 108 109 nvlist_free(old_props); 110 return (0); 111} 112 113static char * 114zpool_get_prop_string(zpool_handle_t *zhp, zpool_prop_t prop, 115 zprop_source_t *src) 116{ 117 nvlist_t *nv, *nvl; 118 uint64_t ival; 119 char *value; 120 zprop_source_t source; 121 122 nvl = zhp->zpool_props; 123 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) { 124 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &ival) == 0); 125 source = ival; 126 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0); 127 } else { 128 source = ZPROP_SRC_DEFAULT; 129 if ((value = (char *)zpool_prop_default_string(prop)) == NULL) 130 value = "-"; 131 } 132 133 if (src) 134 *src = source; 135 136 return (value); 137} 138 139uint64_t 140zpool_get_prop_int(zpool_handle_t *zhp, zpool_prop_t prop, zprop_source_t *src) 141{ 142 nvlist_t *nv, *nvl; 143 uint64_t value; 144 zprop_source_t source; 145 146 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp)) { 147 /* 148 * zpool_get_all_props() has most likely failed because 149 * the pool is faulted, but if all we need is the top level 150 * vdev's guid then get it from the zhp config nvlist. 151 */ 152 if ((prop == ZPOOL_PROP_GUID) && 153 (nvlist_lookup_nvlist(zhp->zpool_config, 154 ZPOOL_CONFIG_VDEV_TREE, &nv) == 0) && 155 (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value) 156 == 0)) { 157 return (value); 158 } 159 return (zpool_prop_default_numeric(prop)); 160 } 161 162 nvl = zhp->zpool_props; 163 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) { 164 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &value) == 0); 165 source = value; 166 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0); 167 } else { 168 source = ZPROP_SRC_DEFAULT; 169 value = zpool_prop_default_numeric(prop); 170 } 171 172 if (src) 173 *src = source; 174 175 return (value); 176} 177 178/* 179 * Map VDEV STATE to printed strings. 180 */ 181const char * 182zpool_state_to_name(vdev_state_t state, vdev_aux_t aux) 183{ 184 switch (state) { 185 case VDEV_STATE_CLOSED: 186 case VDEV_STATE_OFFLINE: 187 return (gettext("OFFLINE")); 188 case VDEV_STATE_REMOVED: 189 return (gettext("REMOVED")); 190 case VDEV_STATE_CANT_OPEN: 191 if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG) 192 return (gettext("FAULTED")); 193 else if (aux == VDEV_AUX_SPLIT_POOL) 194 return (gettext("SPLIT")); 195 else 196 return (gettext("UNAVAIL")); 197 case VDEV_STATE_FAULTED: 198 return (gettext("FAULTED")); 199 case VDEV_STATE_DEGRADED: 200 return (gettext("DEGRADED")); 201 case VDEV_STATE_HEALTHY: 202 return (gettext("ONLINE")); 203 204 default: 205 break; 206 } 207 208 return (gettext("UNKNOWN")); 209} 210 211/* 212 * Map POOL STATE to printed strings. 213 */ 214const char * 215zpool_pool_state_to_name(pool_state_t state) 216{ 217 switch (state) { 218 case POOL_STATE_ACTIVE: 219 return (gettext("ACTIVE")); 220 case POOL_STATE_EXPORTED: 221 return (gettext("EXPORTED")); 222 case POOL_STATE_DESTROYED: 223 return (gettext("DESTROYED")); 224 case POOL_STATE_SPARE: 225 return (gettext("SPARE")); 226 case POOL_STATE_L2CACHE: 227 return (gettext("L2CACHE")); 228 case POOL_STATE_UNINITIALIZED: 229 return (gettext("UNINITIALIZED")); 230 case POOL_STATE_UNAVAIL: 231 return (gettext("UNAVAIL")); 232 case POOL_STATE_POTENTIALLY_ACTIVE: 233 return (gettext("POTENTIALLY_ACTIVE")); 234 } 235 236 return (gettext("UNKNOWN")); 237} 238 239/* 240 * Get a zpool property value for 'prop' and return the value in 241 * a pre-allocated buffer. 242 */ 243int 244zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len, 245 zprop_source_t *srctype, boolean_t literal) 246{ 247 uint64_t intval; 248 const char *strval; 249 zprop_source_t src = ZPROP_SRC_NONE; 250 nvlist_t *nvroot; 251 vdev_stat_t *vs; 252 uint_t vsc; 253 254 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) { 255 switch (prop) { 256 case ZPOOL_PROP_NAME: 257 (void) strlcpy(buf, zpool_get_name(zhp), len); 258 break; 259 260 case ZPOOL_PROP_HEALTH: 261 (void) strlcpy(buf, 262 zpool_pool_state_to_name(POOL_STATE_UNAVAIL), len); 263 break; 264 265 case ZPOOL_PROP_GUID: 266 intval = zpool_get_prop_int(zhp, prop, &src); 267 (void) snprintf(buf, len, "%llu", intval); 268 break; 269 270 case ZPOOL_PROP_ALTROOT: 271 case ZPOOL_PROP_CACHEFILE: 272 case ZPOOL_PROP_COMMENT: 273 if (zhp->zpool_props != NULL || 274 zpool_get_all_props(zhp) == 0) { 275 (void) strlcpy(buf, 276 zpool_get_prop_string(zhp, prop, &src), 277 len); 278 break; 279 } 280 /* FALLTHROUGH */ 281 default: 282 (void) strlcpy(buf, "-", len); 283 break; 284 } 285 286 if (srctype != NULL) 287 *srctype = src; 288 return (0); 289 } 290 291 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) && 292 prop != ZPOOL_PROP_NAME) 293 return (-1); 294 295 switch (zpool_prop_get_type(prop)) { 296 case PROP_TYPE_STRING: 297 (void) strlcpy(buf, zpool_get_prop_string(zhp, prop, &src), 298 len); 299 break; 300 301 case PROP_TYPE_NUMBER: 302 intval = zpool_get_prop_int(zhp, prop, &src); 303 304 switch (prop) { 305 case ZPOOL_PROP_SIZE: 306 case ZPOOL_PROP_ALLOCATED: 307 case ZPOOL_PROP_FREE: 308 case ZPOOL_PROP_FREEING: 309 case ZPOOL_PROP_LEAKED: 310 if (literal) { 311 (void) snprintf(buf, len, "%llu", 312 (u_longlong_t)intval); 313 } else { 314 (void) zfs_nicenum(intval, buf, len); 315 } 316 break; 317 case ZPOOL_PROP_EXPANDSZ: 318 if (intval == 0) { 319 (void) strlcpy(buf, "-", len); 320 } else if (literal) { 321 (void) snprintf(buf, len, "%llu", 322 (u_longlong_t)intval); 323 } else { 324 (void) zfs_nicenum(intval, buf, len); 325 } 326 break; 327 case ZPOOL_PROP_CAPACITY: 328 if (literal) { 329 (void) snprintf(buf, len, "%llu", 330 (u_longlong_t)intval); 331 } else { 332 (void) snprintf(buf, len, "%llu%%", 333 (u_longlong_t)intval); 334 } 335 break; 336 case ZPOOL_PROP_FRAGMENTATION: 337 if (intval == UINT64_MAX) { 338 (void) strlcpy(buf, "-", len); 339 } else { 340 (void) snprintf(buf, len, "%llu%%", 341 (u_longlong_t)intval); 342 } 343 break; 344 case ZPOOL_PROP_DEDUPRATIO: 345 (void) snprintf(buf, len, "%llu.%02llux", 346 (u_longlong_t)(intval / 100), 347 (u_longlong_t)(intval % 100)); 348 break; 349 case ZPOOL_PROP_HEALTH: 350 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 351 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 352 verify(nvlist_lookup_uint64_array(nvroot, 353 ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc) 354 == 0); 355 356 (void) strlcpy(buf, zpool_state_to_name(intval, 357 vs->vs_aux), len); 358 break; 359 case ZPOOL_PROP_VERSION: 360 if (intval >= SPA_VERSION_FEATURES) { 361 (void) snprintf(buf, len, "-"); 362 break; 363 } 364 /* FALLTHROUGH */ 365 default: 366 (void) snprintf(buf, len, "%llu", intval); 367 } 368 break; 369 370 case PROP_TYPE_INDEX: 371 intval = zpool_get_prop_int(zhp, prop, &src); 372 if (zpool_prop_index_to_string(prop, intval, &strval) 373 != 0) 374 return (-1); 375 (void) strlcpy(buf, strval, len); 376 break; 377 378 default: 379 abort(); 380 } 381 382 if (srctype) 383 *srctype = src; 384 385 return (0); 386} 387 388/* 389 * Check if the bootfs name has the same pool name as it is set to. 390 * Assuming bootfs is a valid dataset name. 391 */ 392static boolean_t 393bootfs_name_valid(const char *pool, char *bootfs) 394{ 395 int len = strlen(pool); 396 397 if (!zfs_name_valid(bootfs, ZFS_TYPE_FILESYSTEM|ZFS_TYPE_SNAPSHOT)) 398 return (B_FALSE); 399 400 if (strncmp(pool, bootfs, len) == 0 && 401 (bootfs[len] == '/' || bootfs[len] == '\0')) 402 return (B_TRUE); 403 404 return (B_FALSE); 405} 406 407boolean_t 408zpool_is_bootable(zpool_handle_t *zhp) 409{ 410 char bootfs[ZPOOL_MAXNAMELEN]; 411 412 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs, 413 sizeof (bootfs), NULL, B_FALSE) == 0 && strncmp(bootfs, "-", 414 sizeof (bootfs)) != 0); 415} 416 417 418/* 419 * Given an nvlist of zpool properties to be set, validate that they are 420 * correct, and parse any numeric properties (index, boolean, etc) if they are 421 * specified as strings. 422 */ 423static nvlist_t * 424zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname, 425 nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf) 426{ 427 nvpair_t *elem; 428 nvlist_t *retprops; 429 zpool_prop_t prop; 430 char *strval; 431 uint64_t intval; 432 char *slash, *check; 433 struct stat64 statbuf; 434 zpool_handle_t *zhp; 435 436 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) { 437 (void) no_memory(hdl); 438 return (NULL); 439 } 440 441 elem = NULL; 442 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { 443 const char *propname = nvpair_name(elem); 444 445 prop = zpool_name_to_prop(propname); 446 if (prop == ZPROP_INVAL && zpool_prop_feature(propname)) { 447 int err; 448 char *fname = strchr(propname, '@') + 1; 449 450 err = zfeature_lookup_name(fname, NULL); 451 if (err != 0) { 452 ASSERT3U(err, ==, ENOENT); 453 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 454 "invalid feature '%s'"), fname); 455 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 456 goto error; 457 } 458 459 if (nvpair_type(elem) != DATA_TYPE_STRING) { 460 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 461 "'%s' must be a string"), propname); 462 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 463 goto error; 464 } 465 466 (void) nvpair_value_string(elem, &strval); 467 if (strcmp(strval, ZFS_FEATURE_ENABLED) != 0) { 468 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 469 "property '%s' can only be set to " 470 "'enabled'"), propname); 471 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 472 goto error; 473 } 474 475 if (nvlist_add_uint64(retprops, propname, 0) != 0) { 476 (void) no_memory(hdl); 477 goto error; 478 } 479 continue; 480 } 481 482 /* 483 * Make sure this property is valid and applies to this type. 484 */ 485 if (prop == ZPROP_INVAL) { 486 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 487 "invalid property '%s'"), propname); 488 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 489 goto error; 490 } 491 492 if (zpool_prop_readonly(prop)) { 493 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 494 "is readonly"), propname); 495 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf); 496 goto error; 497 } 498 499 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops, 500 &strval, &intval, errbuf) != 0) 501 goto error; 502 503 /* 504 * Perform additional checking for specific properties. 505 */ 506 switch (prop) { 507 case ZPOOL_PROP_VERSION: 508 if (intval < version || 509 !SPA_VERSION_IS_SUPPORTED(intval)) { 510 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 511 "property '%s' number %d is invalid."), 512 propname, intval); 513 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 514 goto error; 515 } 516 break; 517 518 case ZPOOL_PROP_BOOTFS: 519 if (flags.create || flags.import) { 520 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 521 "property '%s' cannot be set at creation " 522 "or import time"), propname); 523 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 524 goto error; 525 } 526 527 if (version < SPA_VERSION_BOOTFS) { 528 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 529 "pool must be upgraded to support " 530 "'%s' property"), propname); 531 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); 532 goto error; 533 } 534 535 /* 536 * bootfs property value has to be a dataset name and 537 * the dataset has to be in the same pool as it sets to. 538 */ 539 if (strval[0] != '\0' && !bootfs_name_valid(poolname, 540 strval)) { 541 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' " 542 "is an invalid name"), strval); 543 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 544 goto error; 545 } 546 547 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) { 548 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 549 "could not open pool '%s'"), poolname); 550 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 551 goto error; 552 } 553 zpool_close(zhp); 554 break; 555 556 case ZPOOL_PROP_ALTROOT: 557 if (!flags.create && !flags.import) { 558 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 559 "property '%s' can only be set during pool " 560 "creation or import"), propname); 561 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 562 goto error; 563 } 564 565 if (strval[0] != '/') { 566 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 567 "bad alternate root '%s'"), strval); 568 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 569 goto error; 570 } 571 break; 572 573 case ZPOOL_PROP_CACHEFILE: 574 if (strval[0] == '\0') 575 break; 576 577 if (strcmp(strval, "none") == 0) 578 break; 579 580 if (strval[0] != '/') { 581 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 582 "property '%s' must be empty, an " 583 "absolute path, or 'none'"), propname); 584 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 585 goto error; 586 } 587 588 slash = strrchr(strval, '/'); 589 590 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 || 591 strcmp(slash, "/..") == 0) { 592 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 593 "'%s' is not a valid file"), strval); 594 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 595 goto error; 596 } 597 598 *slash = '\0'; 599 600 if (strval[0] != '\0' && 601 (stat64(strval, &statbuf) != 0 || 602 !S_ISDIR(statbuf.st_mode))) { 603 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 604 "'%s' is not a valid directory"), 605 strval); 606 (void) zfs_error(hdl, EZFS_BADPATH, errbuf); 607 goto error; 608 } 609 610 *slash = '/'; 611 break; 612 613 case ZPOOL_PROP_COMMENT: 614 for (check = strval; *check != '\0'; check++) { 615 if (!isprint(*check)) { 616 zfs_error_aux(hdl, 617 dgettext(TEXT_DOMAIN, 618 "comment may only have printable " 619 "characters")); 620 (void) zfs_error(hdl, EZFS_BADPROP, 621 errbuf); 622 goto error; 623 } 624 } 625 if (strlen(strval) > ZPROP_MAX_COMMENT) { 626 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 627 "comment must not exceed %d characters"), 628 ZPROP_MAX_COMMENT); 629 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 630 goto error; 631 } 632 break; 633 case ZPOOL_PROP_READONLY: 634 if (!flags.import) { 635 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 636 "property '%s' can only be set at " 637 "import time"), propname); 638 (void) zfs_error(hdl, EZFS_BADPROP, errbuf); 639 goto error; 640 } 641 break; 642 643 default: 644 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 645 "property '%s'(%d) not defined"), propname, prop); 646 break; 647 } 648 } 649 650 return (retprops); 651error: 652 nvlist_free(retprops); 653 return (NULL); 654} 655 656/* 657 * Set zpool property : propname=propval. 658 */ 659int 660zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval) 661{ 662 zfs_cmd_t zc = { 0 }; 663 int ret = -1; 664 char errbuf[1024]; 665 nvlist_t *nvl = NULL; 666 nvlist_t *realprops; 667 uint64_t version; 668 prop_flags_t flags = { 0 }; 669 670 (void) snprintf(errbuf, sizeof (errbuf), 671 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), 672 zhp->zpool_name); 673 674 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) 675 return (no_memory(zhp->zpool_hdl)); 676 677 if (nvlist_add_string(nvl, propname, propval) != 0) { 678 nvlist_free(nvl); 679 return (no_memory(zhp->zpool_hdl)); 680 } 681 682 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 683 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl, 684 zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) { 685 nvlist_free(nvl); 686 return (-1); 687 } 688 689 nvlist_free(nvl); 690 nvl = realprops; 691 692 /* 693 * Execute the corresponding ioctl() to set this property. 694 */ 695 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 696 697 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) { 698 nvlist_free(nvl); 699 return (-1); 700 } 701 702 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc); 703 704 zcmd_free_nvlists(&zc); 705 nvlist_free(nvl); 706 707 if (ret) 708 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf); 709 else 710 (void) zpool_props_refresh(zhp); 711 712 return (ret); 713} 714 715int 716zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp) 717{ 718 libzfs_handle_t *hdl = zhp->zpool_hdl; 719 zprop_list_t *entry; 720 char buf[ZFS_MAXPROPLEN]; 721 nvlist_t *features = NULL; 722 zprop_list_t **last; 723 boolean_t firstexpand = (NULL == *plp); 724 725 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0) 726 return (-1); 727 728 last = plp; 729 while (*last != NULL) 730 last = &(*last)->pl_next; 731 732 if ((*plp)->pl_all) 733 features = zpool_get_features(zhp); 734 735 if ((*plp)->pl_all && firstexpand) { 736 for (int i = 0; i < SPA_FEATURES; i++) { 737 zprop_list_t *entry = zfs_alloc(hdl, 738 sizeof (zprop_list_t)); 739 entry->pl_prop = ZPROP_INVAL; 740 entry->pl_user_prop = zfs_asprintf(hdl, "feature@%s", 741 spa_feature_table[i].fi_uname); 742 entry->pl_width = strlen(entry->pl_user_prop); 743 entry->pl_all = B_TRUE; 744 745 *last = entry; 746 last = &entry->pl_next; 747 } 748 } 749 750 /* add any unsupported features */ 751 for (nvpair_t *nvp = nvlist_next_nvpair(features, NULL); 752 nvp != NULL; nvp = nvlist_next_nvpair(features, nvp)) { 753 char *propname; 754 boolean_t found; 755 zprop_list_t *entry; 756 757 if (zfeature_is_supported(nvpair_name(nvp))) 758 continue; 759 760 propname = zfs_asprintf(hdl, "unsupported@%s", 761 nvpair_name(nvp)); 762 763 /* 764 * Before adding the property to the list make sure that no 765 * other pool already added the same property. 766 */ 767 found = B_FALSE; 768 entry = *plp; 769 while (entry != NULL) { 770 if (entry->pl_user_prop != NULL && 771 strcmp(propname, entry->pl_user_prop) == 0) { 772 found = B_TRUE; 773 break; 774 } 775 entry = entry->pl_next; 776 } 777 if (found) { 778 free(propname); 779 continue; 780 } 781 782 entry = zfs_alloc(hdl, sizeof (zprop_list_t)); 783 entry->pl_prop = ZPROP_INVAL; 784 entry->pl_user_prop = propname; 785 entry->pl_width = strlen(entry->pl_user_prop); 786 entry->pl_all = B_TRUE; 787 788 *last = entry; 789 last = &entry->pl_next; 790 } 791 792 for (entry = *plp; entry != NULL; entry = entry->pl_next) { 793 794 if (entry->pl_fixed) 795 continue; 796 797 if (entry->pl_prop != ZPROP_INVAL && 798 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf), 799 NULL, B_FALSE) == 0) { 800 if (strlen(buf) > entry->pl_width) 801 entry->pl_width = strlen(buf); 802 } 803 } 804 805 return (0); 806} 807 808/* 809 * Get the state for the given feature on the given ZFS pool. 810 */ 811int 812zpool_prop_get_feature(zpool_handle_t *zhp, const char *propname, char *buf, 813 size_t len) 814{ 815 uint64_t refcount; 816 boolean_t found = B_FALSE; 817 nvlist_t *features = zpool_get_features(zhp); 818 boolean_t supported; 819 const char *feature = strchr(propname, '@') + 1; 820 821 supported = zpool_prop_feature(propname); 822 ASSERT(supported || zpool_prop_unsupported(propname)); 823 824 /* 825 * Convert from feature name to feature guid. This conversion is 826 * unecessary for unsupported@... properties because they already 827 * use guids. 828 */ 829 if (supported) { 830 int ret; 831 spa_feature_t fid; 832 833 ret = zfeature_lookup_name(feature, &fid); 834 if (ret != 0) { 835 (void) strlcpy(buf, "-", len); 836 return (ENOTSUP); 837 } 838 feature = spa_feature_table[fid].fi_guid; 839 } 840 841 if (nvlist_lookup_uint64(features, feature, &refcount) == 0) 842 found = B_TRUE; 843 844 if (supported) { 845 if (!found) { 846 (void) strlcpy(buf, ZFS_FEATURE_DISABLED, len); 847 } else { 848 if (refcount == 0) 849 (void) strlcpy(buf, ZFS_FEATURE_ENABLED, len); 850 else 851 (void) strlcpy(buf, ZFS_FEATURE_ACTIVE, len); 852 } 853 } else { 854 if (found) { 855 if (refcount == 0) { 856 (void) strcpy(buf, ZFS_UNSUPPORTED_INACTIVE); 857 } else { 858 (void) strcpy(buf, ZFS_UNSUPPORTED_READONLY); 859 } 860 } else { 861 (void) strlcpy(buf, "-", len); 862 return (ENOTSUP); 863 } 864 } 865 866 return (0); 867} 868 869/* 870 * Don't start the slice at the default block of 34; many storage 871 * devices will use a stripe width of 128k, so start there instead. 872 */ 873#define NEW_START_BLOCK 256 874 875/* 876 * Validate the given pool name, optionally putting an extended error message in 877 * 'buf'. 878 */ 879boolean_t 880zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool) 881{ 882 namecheck_err_t why; 883 char what; 884 int ret; 885 886 ret = pool_namecheck(pool, &why, &what); 887 888 /* 889 * The rules for reserved pool names were extended at a later point. 890 * But we need to support users with existing pools that may now be 891 * invalid. So we only check for this expanded set of names during a 892 * create (or import), and only in userland. 893 */ 894 if (ret == 0 && !isopen && 895 (strncmp(pool, "mirror", 6) == 0 || 896 strncmp(pool, "raidz", 5) == 0 || 897 strncmp(pool, "spare", 5) == 0 || 898 strcmp(pool, "log") == 0)) { 899 if (hdl != NULL) 900 zfs_error_aux(hdl, 901 dgettext(TEXT_DOMAIN, "name is reserved")); 902 return (B_FALSE); 903 } 904 905 906 if (ret != 0) { 907 if (hdl != NULL) { 908 switch (why) { 909 case NAME_ERR_TOOLONG: 910 zfs_error_aux(hdl, 911 dgettext(TEXT_DOMAIN, "name is too long")); 912 break; 913 914 case NAME_ERR_INVALCHAR: 915 zfs_error_aux(hdl, 916 dgettext(TEXT_DOMAIN, "invalid character " 917 "'%c' in pool name"), what); 918 break; 919 920 case NAME_ERR_NOLETTER: 921 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 922 "name must begin with a letter")); 923 break; 924 925 case NAME_ERR_RESERVED: 926 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 927 "name is reserved")); 928 break; 929 930 case NAME_ERR_DISKLIKE: 931 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 932 "pool name is reserved")); 933 break; 934 935 case NAME_ERR_LEADING_SLASH: 936 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 937 "leading slash in name")); 938 break; 939 940 case NAME_ERR_EMPTY_COMPONENT: 941 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 942 "empty component in name")); 943 break; 944 945 case NAME_ERR_TRAILING_SLASH: 946 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 947 "trailing slash in name")); 948 break; 949 950 case NAME_ERR_MULTIPLE_AT: 951 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 952 "multiple '@' delimiters in name")); 953 break; 954 955 default: 956 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 957 "(%d) not defined"), why); 958 break; 959 } 960 } 961 return (B_FALSE); 962 } 963 964 return (B_TRUE); 965} 966 967/* 968 * Open a handle to the given pool, even if the pool is currently in the FAULTED 969 * state. 970 */ 971zpool_handle_t * 972zpool_open_canfail(libzfs_handle_t *hdl, const char *pool) 973{ 974 zpool_handle_t *zhp; 975 boolean_t missing; 976 977 /* 978 * Make sure the pool name is valid. 979 */ 980 if (!zpool_name_valid(hdl, B_TRUE, pool)) { 981 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME, 982 dgettext(TEXT_DOMAIN, "cannot open '%s'"), 983 pool); 984 return (NULL); 985 } 986 987 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 988 return (NULL); 989 990 zhp->zpool_hdl = hdl; 991 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 992 993 if (zpool_refresh_stats(zhp, &missing) != 0) { 994 zpool_close(zhp); 995 return (NULL); 996 } 997 998 if (missing) { 999 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool")); 1000 (void) zfs_error_fmt(hdl, EZFS_NOENT, 1001 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool); 1002 zpool_close(zhp); 1003 return (NULL); 1004 } 1005 1006 return (zhp); 1007} 1008 1009/* 1010 * Like the above, but silent on error. Used when iterating over pools (because 1011 * the configuration cache may be out of date). 1012 */ 1013int 1014zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret) 1015{ 1016 zpool_handle_t *zhp; 1017 boolean_t missing; 1018 1019 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL) 1020 return (-1); 1021 1022 zhp->zpool_hdl = hdl; 1023 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name)); 1024 1025 if (zpool_refresh_stats(zhp, &missing) != 0) { 1026 zpool_close(zhp); 1027 return (-1); 1028 } 1029 1030 if (missing) { 1031 zpool_close(zhp); 1032 *ret = NULL; 1033 return (0); 1034 } 1035 1036 *ret = zhp; 1037 return (0); 1038} 1039 1040/* 1041 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted 1042 * state. 1043 */ 1044zpool_handle_t * 1045zpool_open(libzfs_handle_t *hdl, const char *pool) 1046{ 1047 zpool_handle_t *zhp; 1048 1049 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL) 1050 return (NULL); 1051 1052 if (zhp->zpool_state == POOL_STATE_UNAVAIL) { 1053 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL, 1054 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name); 1055 zpool_close(zhp); 1056 return (NULL); 1057 } 1058 1059 return (zhp); 1060} 1061 1062/* 1063 * Close the handle. Simply frees the memory associated with the handle. 1064 */ 1065void 1066zpool_close(zpool_handle_t *zhp) 1067{ 1068 nvlist_free(zhp->zpool_config); 1069 nvlist_free(zhp->zpool_old_config); 1070 nvlist_free(zhp->zpool_props); 1071 free(zhp); 1072} 1073 1074/* 1075 * Return the name of the pool. 1076 */ 1077const char * 1078zpool_get_name(zpool_handle_t *zhp) 1079{ 1080 return (zhp->zpool_name); 1081} 1082 1083 1084/* 1085 * Return the state of the pool (ACTIVE or UNAVAILABLE) 1086 */ 1087int 1088zpool_get_state(zpool_handle_t *zhp) 1089{ 1090 return (zhp->zpool_state); 1091} 1092 1093/* 1094 * Create the named pool, using the provided vdev list. It is assumed 1095 * that the consumer has already validated the contents of the nvlist, so we 1096 * don't have to worry about error semantics. 1097 */ 1098int 1099zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot, 1100 nvlist_t *props, nvlist_t *fsprops) 1101{ 1102 zfs_cmd_t zc = { 0 }; 1103 nvlist_t *zc_fsprops = NULL; 1104 nvlist_t *zc_props = NULL; 1105 char msg[1024]; 1106 int ret = -1; 1107 1108 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1109 "cannot create '%s'"), pool); 1110 1111 if (!zpool_name_valid(hdl, B_FALSE, pool)) 1112 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 1113 1114 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1115 return (-1); 1116 1117 if (props) { 1118 prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE }; 1119 1120 if ((zc_props = zpool_valid_proplist(hdl, pool, props, 1121 SPA_VERSION_1, flags, msg)) == NULL) { 1122 goto create_failed; 1123 } 1124 } 1125 1126 if (fsprops) { 1127 uint64_t zoned; 1128 char *zonestr; 1129 1130 zoned = ((nvlist_lookup_string(fsprops, 1131 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) && 1132 strcmp(zonestr, "on") == 0); 1133 1134 if ((zc_fsprops = zfs_valid_proplist(hdl, ZFS_TYPE_FILESYSTEM, 1135 fsprops, zoned, NULL, NULL, msg)) == NULL) { 1136 goto create_failed; 1137 } 1138 if (!zc_props && 1139 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) { 1140 goto create_failed; 1141 } 1142 if (nvlist_add_nvlist(zc_props, 1143 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) { 1144 goto create_failed; 1145 } 1146 } 1147 1148 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 1149 goto create_failed; 1150 1151 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name)); 1152 1153 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) { 1154 1155 zcmd_free_nvlists(&zc); 1156 nvlist_free(zc_props); 1157 nvlist_free(zc_fsprops); 1158 1159 switch (errno) { 1160 case EBUSY: 1161 /* 1162 * This can happen if the user has specified the same 1163 * device multiple times. We can't reliably detect this 1164 * until we try to add it and see we already have a 1165 * label. 1166 */ 1167 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1168 "one or more vdevs refer to the same device")); 1169 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1170 1171 case ERANGE: 1172 /* 1173 * This happens if the record size is smaller or larger 1174 * than the allowed size range, or not a power of 2. 1175 * 1176 * NOTE: although zfs_valid_proplist is called earlier, 1177 * this case may have slipped through since the 1178 * pool does not exist yet and it is therefore 1179 * impossible to read properties e.g. max blocksize 1180 * from the pool. 1181 */ 1182 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1183 "record size invalid")); 1184 return (zfs_error(hdl, EZFS_BADPROP, msg)); 1185 1186 case EOVERFLOW: 1187 /* 1188 * This occurs when one of the devices is below 1189 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1190 * device was the problem device since there's no 1191 * reliable way to determine device size from userland. 1192 */ 1193 { 1194 char buf[64]; 1195 1196 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1197 1198 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1199 "one or more devices is less than the " 1200 "minimum size (%s)"), buf); 1201 } 1202 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1203 1204 case ENOSPC: 1205 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1206 "one or more devices is out of space")); 1207 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1208 1209 case ENOTBLK: 1210 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1211 "cache device must be a disk or disk slice")); 1212 return (zfs_error(hdl, EZFS_BADDEV, msg)); 1213 1214 default: 1215 return (zpool_standard_error(hdl, errno, msg)); 1216 } 1217 } 1218 1219create_failed: 1220 zcmd_free_nvlists(&zc); 1221 nvlist_free(zc_props); 1222 nvlist_free(zc_fsprops); 1223 return (ret); 1224} 1225 1226/* 1227 * Destroy the given pool. It is up to the caller to ensure that there are no 1228 * datasets left in the pool. 1229 */ 1230int 1231zpool_destroy(zpool_handle_t *zhp, const char *log_str) 1232{ 1233 zfs_cmd_t zc = { 0 }; 1234 zfs_handle_t *zfp = NULL; 1235 libzfs_handle_t *hdl = zhp->zpool_hdl; 1236 char msg[1024]; 1237 1238 if (zhp->zpool_state == POOL_STATE_ACTIVE && 1239 (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL) 1240 return (-1); 1241 1242 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1243 zc.zc_history = (uint64_t)(uintptr_t)log_str; 1244 1245 if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) { 1246 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1247 "cannot destroy '%s'"), zhp->zpool_name); 1248 1249 if (errno == EROFS) { 1250 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1251 "one or more devices is read only")); 1252 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1253 } else { 1254 (void) zpool_standard_error(hdl, errno, msg); 1255 } 1256 1257 if (zfp) 1258 zfs_close(zfp); 1259 return (-1); 1260 } 1261 1262 if (zfp) { 1263 remove_mountpoint(zfp); 1264 zfs_close(zfp); 1265 } 1266 1267 return (0); 1268} 1269 1270/* 1271 * Add the given vdevs to the pool. The caller must have already performed the 1272 * necessary verification to ensure that the vdev specification is well-formed. 1273 */ 1274int 1275zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot) 1276{ 1277 zfs_cmd_t zc = { 0 }; 1278 int ret; 1279 libzfs_handle_t *hdl = zhp->zpool_hdl; 1280 char msg[1024]; 1281 nvlist_t **spares, **l2cache; 1282 uint_t nspares, nl2cache; 1283 1284 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1285 "cannot add to '%s'"), zhp->zpool_name); 1286 1287 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1288 SPA_VERSION_SPARES && 1289 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 1290 &spares, &nspares) == 0) { 1291 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1292 "upgraded to add hot spares")); 1293 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1294 } 1295 1296 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) < 1297 SPA_VERSION_L2CACHE && 1298 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, 1299 &l2cache, &nl2cache) == 0) { 1300 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be " 1301 "upgraded to add cache devices")); 1302 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 1303 } 1304 1305 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 1306 return (-1); 1307 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1308 1309 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) { 1310 switch (errno) { 1311 case EBUSY: 1312 /* 1313 * This can happen if the user has specified the same 1314 * device multiple times. We can't reliably detect this 1315 * until we try to add it and see we already have a 1316 * label. 1317 */ 1318 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1319 "one or more vdevs refer to the same device")); 1320 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1321 break; 1322 1323 case EOVERFLOW: 1324 /* 1325 * This occurrs when one of the devices is below 1326 * SPA_MINDEVSIZE. Unfortunately, we can't detect which 1327 * device was the problem device since there's no 1328 * reliable way to determine device size from userland. 1329 */ 1330 { 1331 char buf[64]; 1332 1333 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf)); 1334 1335 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1336 "device is less than the minimum " 1337 "size (%s)"), buf); 1338 } 1339 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1340 break; 1341 1342 case ENOTSUP: 1343 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1344 "pool must be upgraded to add these vdevs")); 1345 (void) zfs_error(hdl, EZFS_BADVERSION, msg); 1346 break; 1347 1348 case EDOM: 1349 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1350 "root pool can not have multiple vdevs" 1351 " or separate logs")); 1352 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, msg); 1353 break; 1354 1355 case ENOTBLK: 1356 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1357 "cache device must be a disk or disk slice")); 1358 (void) zfs_error(hdl, EZFS_BADDEV, msg); 1359 break; 1360 1361 default: 1362 (void) zpool_standard_error(hdl, errno, msg); 1363 } 1364 1365 ret = -1; 1366 } else { 1367 ret = 0; 1368 } 1369 1370 zcmd_free_nvlists(&zc); 1371 1372 return (ret); 1373} 1374 1375/* 1376 * Exports the pool from the system. The caller must ensure that there are no 1377 * mounted datasets in the pool. 1378 */ 1379static int 1380zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce, 1381 const char *log_str) 1382{ 1383 zfs_cmd_t zc = { 0 }; 1384 char msg[1024]; 1385 1386 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 1387 "cannot export '%s'"), zhp->zpool_name); 1388 1389 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1390 zc.zc_cookie = force; 1391 zc.zc_guid = hardforce; 1392 zc.zc_history = (uint64_t)(uintptr_t)log_str; 1393 1394 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) { 1395 switch (errno) { 1396 case EXDEV: 1397 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN, 1398 "use '-f' to override the following errors:\n" 1399 "'%s' has an active shared spare which could be" 1400 " used by other pools once '%s' is exported."), 1401 zhp->zpool_name, zhp->zpool_name); 1402 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE, 1403 msg)); 1404 default: 1405 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno, 1406 msg)); 1407 } 1408 } 1409 1410 return (0); 1411} 1412 1413int 1414zpool_export(zpool_handle_t *zhp, boolean_t force, const char *log_str) 1415{ 1416 return (zpool_export_common(zhp, force, B_FALSE, log_str)); 1417} 1418 1419int 1420zpool_export_force(zpool_handle_t *zhp, const char *log_str) 1421{ 1422 return (zpool_export_common(zhp, B_TRUE, B_TRUE, log_str)); 1423} 1424 1425static void 1426zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun, 1427 nvlist_t *config) 1428{ 1429 nvlist_t *nv = NULL; 1430 uint64_t rewindto; 1431 int64_t loss = -1; 1432 struct tm t; 1433 char timestr[128]; 1434 1435 if (!hdl->libzfs_printerr || config == NULL) 1436 return; 1437 1438 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 || 1439 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0) { 1440 return; 1441 } 1442 1443 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1444 return; 1445 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss); 1446 1447 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1448 strftime(timestr, 128, 0, &t) != 0) { 1449 if (dryrun) { 1450 (void) printf(dgettext(TEXT_DOMAIN, 1451 "Would be able to return %s " 1452 "to its state as of %s.\n"), 1453 name, timestr); 1454 } else { 1455 (void) printf(dgettext(TEXT_DOMAIN, 1456 "Pool %s returned to its state as of %s.\n"), 1457 name, timestr); 1458 } 1459 if (loss > 120) { 1460 (void) printf(dgettext(TEXT_DOMAIN, 1461 "%s approximately %lld "), 1462 dryrun ? "Would discard" : "Discarded", 1463 (loss + 30) / 60); 1464 (void) printf(dgettext(TEXT_DOMAIN, 1465 "minutes of transactions.\n")); 1466 } else if (loss > 0) { 1467 (void) printf(dgettext(TEXT_DOMAIN, 1468 "%s approximately %lld "), 1469 dryrun ? "Would discard" : "Discarded", loss); 1470 (void) printf(dgettext(TEXT_DOMAIN, 1471 "seconds of transactions.\n")); 1472 } 1473 } 1474} 1475 1476void 1477zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason, 1478 nvlist_t *config) 1479{ 1480 nvlist_t *nv = NULL; 1481 int64_t loss = -1; 1482 uint64_t edata = UINT64_MAX; 1483 uint64_t rewindto; 1484 struct tm t; 1485 char timestr[128]; 1486 1487 if (!hdl->libzfs_printerr) 1488 return; 1489 1490 if (reason >= 0) 1491 (void) printf(dgettext(TEXT_DOMAIN, "action: ")); 1492 else 1493 (void) printf(dgettext(TEXT_DOMAIN, "\t")); 1494 1495 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */ 1496 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 || 1497 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0 || 1498 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0) 1499 goto no_info; 1500 1501 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss); 1502 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS, 1503 &edata); 1504 1505 (void) printf(dgettext(TEXT_DOMAIN, 1506 "Recovery is possible, but will result in some data loss.\n")); 1507 1508 if (localtime_r((time_t *)&rewindto, &t) != NULL && 1509 strftime(timestr, 128, 0, &t) != 0) { 1510 (void) printf(dgettext(TEXT_DOMAIN, 1511 "\tReturning the pool to its state as of %s\n" 1512 "\tshould correct the problem. "), 1513 timestr); 1514 } else { 1515 (void) printf(dgettext(TEXT_DOMAIN, 1516 "\tReverting the pool to an earlier state " 1517 "should correct the problem.\n\t")); 1518 } 1519 1520 if (loss > 120) { 1521 (void) printf(dgettext(TEXT_DOMAIN, 1522 "Approximately %lld minutes of data\n" 1523 "\tmust be discarded, irreversibly. "), (loss + 30) / 60); 1524 } else if (loss > 0) { 1525 (void) printf(dgettext(TEXT_DOMAIN, 1526 "Approximately %lld seconds of data\n" 1527 "\tmust be discarded, irreversibly. "), loss); 1528 } 1529 if (edata != 0 && edata != UINT64_MAX) { 1530 if (edata == 1) { 1531 (void) printf(dgettext(TEXT_DOMAIN, 1532 "After rewind, at least\n" 1533 "\tone persistent user-data error will remain. ")); 1534 } else { 1535 (void) printf(dgettext(TEXT_DOMAIN, 1536 "After rewind, several\n" 1537 "\tpersistent user-data errors will remain. ")); 1538 } 1539 } 1540 (void) printf(dgettext(TEXT_DOMAIN, 1541 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "), 1542 reason >= 0 ? "clear" : "import", name); 1543 1544 (void) printf(dgettext(TEXT_DOMAIN, 1545 "A scrub of the pool\n" 1546 "\tis strongly recommended after recovery.\n")); 1547 return; 1548 1549no_info: 1550 (void) printf(dgettext(TEXT_DOMAIN, 1551 "Destroy and re-create the pool from\n\ta backup source.\n")); 1552} 1553 1554/* 1555 * zpool_import() is a contracted interface. Should be kept the same 1556 * if possible. 1557 * 1558 * Applications should use zpool_import_props() to import a pool with 1559 * new properties value to be set. 1560 */ 1561int 1562zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1563 char *altroot) 1564{ 1565 nvlist_t *props = NULL; 1566 int ret; 1567 1568 if (altroot != NULL) { 1569 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) { 1570 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1571 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1572 newname)); 1573 } 1574 1575 if (nvlist_add_string(props, 1576 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 || 1577 nvlist_add_string(props, 1578 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) { 1579 nvlist_free(props); 1580 return (zfs_error_fmt(hdl, EZFS_NOMEM, 1581 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1582 newname)); 1583 } 1584 } 1585 1586 ret = zpool_import_props(hdl, config, newname, props, 1587 ZFS_IMPORT_NORMAL); 1588 nvlist_free(props); 1589 return (ret); 1590} 1591 1592static void 1593print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv, 1594 int indent) 1595{ 1596 nvlist_t **child; 1597 uint_t c, children; 1598 char *vname; 1599 uint64_t is_log = 0; 1600 1601 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, 1602 &is_log); 1603 1604 if (name != NULL) 1605 (void) printf("\t%*s%s%s\n", indent, "", name, 1606 is_log ? " [log]" : ""); 1607 1608 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 1609 &child, &children) != 0) 1610 return; 1611 1612 for (c = 0; c < children; c++) { 1613 vname = zpool_vdev_name(hdl, NULL, child[c], B_TRUE); 1614 print_vdev_tree(hdl, vname, child[c], indent + 2); 1615 free(vname); 1616 } 1617} 1618 1619void 1620zpool_print_unsup_feat(nvlist_t *config) 1621{ 1622 nvlist_t *nvinfo, *unsup_feat; 1623 1624 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 1625 0); 1626 verify(nvlist_lookup_nvlist(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT, 1627 &unsup_feat) == 0); 1628 1629 for (nvpair_t *nvp = nvlist_next_nvpair(unsup_feat, NULL); nvp != NULL; 1630 nvp = nvlist_next_nvpair(unsup_feat, nvp)) { 1631 char *desc; 1632 1633 verify(nvpair_type(nvp) == DATA_TYPE_STRING); 1634 verify(nvpair_value_string(nvp, &desc) == 0); 1635 1636 if (strlen(desc) > 0) 1637 (void) printf("\t%s (%s)\n", nvpair_name(nvp), desc); 1638 else 1639 (void) printf("\t%s\n", nvpair_name(nvp)); 1640 } 1641} 1642 1643/* 1644 * Import the given pool using the known configuration and a list of 1645 * properties to be set. The configuration should have come from 1646 * zpool_find_import(). The 'newname' parameters control whether the pool 1647 * is imported with a different name. 1648 */ 1649int 1650zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, 1651 nvlist_t *props, int flags) 1652{ 1653 zfs_cmd_t zc = { 0 }; 1654 zpool_rewind_policy_t policy; 1655 nvlist_t *nv = NULL; 1656 nvlist_t *nvinfo = NULL; 1657 nvlist_t *missing = NULL; 1658 char *thename; 1659 char *origname; 1660 int ret; 1661 int error = 0; 1662 char errbuf[1024]; 1663 1664 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, 1665 &origname) == 0); 1666 1667 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 1668 "cannot import pool '%s'"), origname); 1669 1670 if (newname != NULL) { 1671 if (!zpool_name_valid(hdl, B_FALSE, newname)) 1672 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME, 1673 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1674 newname)); 1675 thename = (char *)newname; 1676 } else { 1677 thename = origname; 1678 } 1679 1680 if (props != NULL) { 1681 uint64_t version; 1682 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 1683 1684 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, 1685 &version) == 0); 1686 1687 if ((props = zpool_valid_proplist(hdl, origname, 1688 props, version, flags, errbuf)) == NULL) 1689 return (-1); 1690 if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) { 1691 nvlist_free(props); 1692 return (-1); 1693 } 1694 nvlist_free(props); 1695 } 1696 1697 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name)); 1698 1699 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, 1700 &zc.zc_guid) == 0); 1701 1702 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) { 1703 zcmd_free_nvlists(&zc); 1704 return (-1); 1705 } 1706 if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) { 1707 zcmd_free_nvlists(&zc); 1708 return (-1); 1709 } 1710 1711 zc.zc_cookie = flags; 1712 while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 && 1713 errno == ENOMEM) { 1714 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 1715 zcmd_free_nvlists(&zc); 1716 return (-1); 1717 } 1718 } 1719 if (ret != 0) 1720 error = errno; 1721 1722 (void) zcmd_read_dst_nvlist(hdl, &zc, &nv); 1723 1724 zcmd_free_nvlists(&zc); 1725 1726 zpool_get_rewind_policy(config, &policy); 1727 1728 if (error) { 1729 char desc[1024]; 1730 1731 /* 1732 * Dry-run failed, but we print out what success 1733 * looks like if we found a best txg 1734 */ 1735 if (policy.zrp_request & ZPOOL_TRY_REWIND) { 1736 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1737 B_TRUE, nv); 1738 nvlist_free(nv); 1739 return (-1); 1740 } 1741 1742 if (newname == NULL) 1743 (void) snprintf(desc, sizeof (desc), 1744 dgettext(TEXT_DOMAIN, "cannot import '%s'"), 1745 thename); 1746 else 1747 (void) snprintf(desc, sizeof (desc), 1748 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"), 1749 origname, thename); 1750 1751 switch (error) { 1752 case ENOTSUP: 1753 if (nv != NULL && nvlist_lookup_nvlist(nv, 1754 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 && 1755 nvlist_exists(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT)) { 1756 (void) printf(dgettext(TEXT_DOMAIN, "This " 1757 "pool uses the following feature(s) not " 1758 "supported by this system:\n")); 1759 zpool_print_unsup_feat(nv); 1760 if (nvlist_exists(nvinfo, 1761 ZPOOL_CONFIG_CAN_RDONLY)) { 1762 (void) printf(dgettext(TEXT_DOMAIN, 1763 "All unsupported features are only " 1764 "required for writing to the pool." 1765 "\nThe pool can be imported using " 1766 "'-o readonly=on'.\n")); 1767 } 1768 } 1769 /* 1770 * Unsupported version. 1771 */ 1772 (void) zfs_error(hdl, EZFS_BADVERSION, desc); 1773 break; 1774 1775 case EINVAL: 1776 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc); 1777 break; 1778 1779 case EROFS: 1780 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 1781 "one or more devices is read only")); 1782 (void) zfs_error(hdl, EZFS_BADDEV, desc); 1783 break; 1784 1785 case ENXIO: 1786 if (nv && nvlist_lookup_nvlist(nv, 1787 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 && 1788 nvlist_lookup_nvlist(nvinfo, 1789 ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) { 1790 (void) printf(dgettext(TEXT_DOMAIN, 1791 "The devices below are missing, use " 1792 "'-m' to import the pool anyway:\n")); 1793 print_vdev_tree(hdl, NULL, missing, 2); 1794 (void) printf("\n"); 1795 } 1796 (void) zpool_standard_error(hdl, error, desc); 1797 break; 1798 1799 case EEXIST: 1800 (void) zpool_standard_error(hdl, error, desc); 1801 break; 1802 1803 default: 1804 (void) zpool_standard_error(hdl, error, desc); 1805 zpool_explain_recover(hdl, 1806 newname ? origname : thename, -error, nv); 1807 break; 1808 } 1809 1810 nvlist_free(nv); 1811 ret = -1; 1812 } else { 1813 zpool_handle_t *zhp; 1814 1815 /* 1816 * This should never fail, but play it safe anyway. 1817 */ 1818 if (zpool_open_silent(hdl, thename, &zhp) != 0) 1819 ret = -1; 1820 else if (zhp != NULL) 1821 zpool_close(zhp); 1822 if (policy.zrp_request & 1823 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 1824 zpool_rewind_exclaim(hdl, newname ? origname : thename, 1825 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv); 1826 } 1827 nvlist_free(nv); 1828 return (0); 1829 } 1830 1831 return (ret); 1832} 1833 1834/* 1835 * Scan the pool. 1836 */ 1837int 1838zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func) 1839{ 1840 zfs_cmd_t zc = { 0 }; 1841 char msg[1024]; 1842 libzfs_handle_t *hdl = zhp->zpool_hdl; 1843 1844 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 1845 zc.zc_cookie = func; 1846 1847 if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 || 1848 (errno == ENOENT && func != POOL_SCAN_NONE)) 1849 return (0); 1850 1851 if (func == POOL_SCAN_SCRUB) { 1852 (void) snprintf(msg, sizeof (msg), 1853 dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name); 1854 } else if (func == POOL_SCAN_NONE) { 1855 (void) snprintf(msg, sizeof (msg), 1856 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"), 1857 zc.zc_name); 1858 } else { 1859 assert(!"unexpected result"); 1860 } 1861 1862 if (errno == EBUSY) { 1863 nvlist_t *nvroot; 1864 pool_scan_stat_t *ps = NULL; 1865 uint_t psc; 1866 1867 verify(nvlist_lookup_nvlist(zhp->zpool_config, 1868 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 1869 (void) nvlist_lookup_uint64_array(nvroot, 1870 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc); 1871 if (ps && ps->pss_func == POOL_SCAN_SCRUB) 1872 return (zfs_error(hdl, EZFS_SCRUBBING, msg)); 1873 else 1874 return (zfs_error(hdl, EZFS_RESILVERING, msg)); 1875 } else if (errno == ENOENT) { 1876 return (zfs_error(hdl, EZFS_NO_SCRUB, msg)); 1877 } else { 1878 return (zpool_standard_error(hdl, errno, msg)); 1879 } 1880} 1881 1882#ifdef illumos 1883/* 1884 * This provides a very minimal check whether a given string is likely a 1885 * c#t#d# style string. Users of this are expected to do their own 1886 * verification of the s# part. 1887 */ 1888#define CTD_CHECK(str) (str && str[0] == 'c' && isdigit(str[1])) 1889 1890/* 1891 * More elaborate version for ones which may start with "/dev/dsk/" 1892 * and the like. 1893 */ 1894static int 1895ctd_check_path(char *str) 1896{ 1897 /* 1898 * If it starts with a slash, check the last component. 1899 */ 1900 if (str && str[0] == '/') { 1901 char *tmp = strrchr(str, '/'); 1902 1903 /* 1904 * If it ends in "/old", check the second-to-last 1905 * component of the string instead. 1906 */ 1907 if (tmp != str && strcmp(tmp, "/old") == 0) { 1908 for (tmp--; *tmp != '/'; tmp--) 1909 ; 1910 } 1911 str = tmp + 1; 1912 } 1913 return (CTD_CHECK(str)); 1914} 1915#endif 1916 1917/* 1918 * Find a vdev that matches the search criteria specified. We use the 1919 * the nvpair name to determine how we should look for the device. 1920 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL 1921 * spare; but FALSE if its an INUSE spare. 1922 */ 1923static nvlist_t * 1924vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare, 1925 boolean_t *l2cache, boolean_t *log) 1926{ 1927 uint_t c, children; 1928 nvlist_t **child; 1929 nvlist_t *ret; 1930 uint64_t is_log; 1931 char *srchkey; 1932 nvpair_t *pair = nvlist_next_nvpair(search, NULL); 1933 1934 /* Nothing to look for */ 1935 if (search == NULL || pair == NULL) 1936 return (NULL); 1937 1938 /* Obtain the key we will use to search */ 1939 srchkey = nvpair_name(pair); 1940 1941 switch (nvpair_type(pair)) { 1942 case DATA_TYPE_UINT64: 1943 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) { 1944 uint64_t srchval, theguid; 1945 1946 verify(nvpair_value_uint64(pair, &srchval) == 0); 1947 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 1948 &theguid) == 0); 1949 if (theguid == srchval) 1950 return (nv); 1951 } 1952 break; 1953 1954 case DATA_TYPE_STRING: { 1955 char *srchval, *val; 1956 1957 verify(nvpair_value_string(pair, &srchval) == 0); 1958 if (nvlist_lookup_string(nv, srchkey, &val) != 0) 1959 break; 1960 1961 /* 1962 * Search for the requested value. Special cases: 1963 * 1964 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in 1965 * "s0" or "s0/old". The "s0" part is hidden from the user, 1966 * but included in the string, so this matches around it. 1967 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE). 1968 * 1969 * Otherwise, all other searches are simple string compares. 1970 */ 1971#ifdef illumos 1972 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 && 1973 ctd_check_path(val)) { 1974 uint64_t wholedisk = 0; 1975 1976 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 1977 &wholedisk); 1978 if (wholedisk) { 1979 int slen = strlen(srchval); 1980 int vlen = strlen(val); 1981 1982 if (slen != vlen - 2) 1983 break; 1984 1985 /* 1986 * make_leaf_vdev() should only set 1987 * wholedisk for ZPOOL_CONFIG_PATHs which 1988 * will include "/dev/dsk/", giving plenty of 1989 * room for the indices used next. 1990 */ 1991 ASSERT(vlen >= 6); 1992 1993 /* 1994 * strings identical except trailing "s0" 1995 */ 1996 if (strcmp(&val[vlen - 2], "s0") == 0 && 1997 strncmp(srchval, val, slen) == 0) 1998 return (nv); 1999 2000 /* 2001 * strings identical except trailing "s0/old" 2002 */ 2003 if (strcmp(&val[vlen - 6], "s0/old") == 0 && 2004 strcmp(&srchval[slen - 4], "/old") == 0 && 2005 strncmp(srchval, val, slen - 4) == 0) 2006 return (nv); 2007 2008 break; 2009 } 2010 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2011#else 2012 if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) { 2013#endif 2014 char *type, *idx, *end, *p; 2015 uint64_t id, vdev_id; 2016 2017 /* 2018 * Determine our vdev type, keeping in mind 2019 * that the srchval is composed of a type and 2020 * vdev id pair (i.e. mirror-4). 2021 */ 2022 if ((type = strdup(srchval)) == NULL) 2023 return (NULL); 2024 2025 if ((p = strrchr(type, '-')) == NULL) { 2026 free(type); 2027 break; 2028 } 2029 idx = p + 1; 2030 *p = '\0'; 2031 2032 /* 2033 * If the types don't match then keep looking. 2034 */ 2035 if (strncmp(val, type, strlen(val)) != 0) { 2036 free(type); 2037 break; 2038 } 2039 2040 verify(strncmp(type, VDEV_TYPE_RAIDZ, 2041 strlen(VDEV_TYPE_RAIDZ)) == 0 || 2042 strncmp(type, VDEV_TYPE_MIRROR, 2043 strlen(VDEV_TYPE_MIRROR)) == 0); 2044 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 2045 &id) == 0); 2046 2047 errno = 0; 2048 vdev_id = strtoull(idx, &end, 10); 2049 2050 free(type); 2051 if (errno != 0) 2052 return (NULL); 2053 2054 /* 2055 * Now verify that we have the correct vdev id. 2056 */ 2057 if (vdev_id == id) 2058 return (nv); 2059 } 2060 2061 /* 2062 * Common case 2063 */ 2064 if (strcmp(srchval, val) == 0) 2065 return (nv); 2066 break; 2067 } 2068 2069 default: 2070 break; 2071 } 2072 2073 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 2074 &child, &children) != 0) 2075 return (NULL); 2076 2077 for (c = 0; c < children; c++) { 2078 if ((ret = vdev_to_nvlist_iter(child[c], search, 2079 avail_spare, l2cache, NULL)) != NULL) { 2080 /* 2081 * The 'is_log' value is only set for the toplevel 2082 * vdev, not the leaf vdevs. So we always lookup the 2083 * log device from the root of the vdev tree (where 2084 * 'log' is non-NULL). 2085 */ 2086 if (log != NULL && 2087 nvlist_lookup_uint64(child[c], 2088 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 && 2089 is_log) { 2090 *log = B_TRUE; 2091 } 2092 return (ret); 2093 } 2094 } 2095 2096 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, 2097 &child, &children) == 0) { 2098 for (c = 0; c < children; c++) { 2099 if ((ret = vdev_to_nvlist_iter(child[c], search, 2100 avail_spare, l2cache, NULL)) != NULL) { 2101 *avail_spare = B_TRUE; 2102 return (ret); 2103 } 2104 } 2105 } 2106 2107 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, 2108 &child, &children) == 0) { 2109 for (c = 0; c < children; c++) { 2110 if ((ret = vdev_to_nvlist_iter(child[c], search, 2111 avail_spare, l2cache, NULL)) != NULL) { 2112 *l2cache = B_TRUE; 2113 return (ret); 2114 } 2115 } 2116 } 2117 2118 return (NULL); 2119} 2120 2121/* 2122 * Given a physical path (minus the "/devices" prefix), find the 2123 * associated vdev. 2124 */ 2125nvlist_t * 2126zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath, 2127 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log) 2128{ 2129 nvlist_t *search, *nvroot, *ret; 2130 2131 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2132 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0); 2133 2134 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2135 &nvroot) == 0); 2136 2137 *avail_spare = B_FALSE; 2138 *l2cache = B_FALSE; 2139 if (log != NULL) 2140 *log = B_FALSE; 2141 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2142 nvlist_free(search); 2143 2144 return (ret); 2145} 2146 2147/* 2148 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz). 2149 */ 2150boolean_t 2151zpool_vdev_is_interior(const char *name) 2152{ 2153 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 || 2154 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0) 2155 return (B_TRUE); 2156 return (B_FALSE); 2157} 2158 2159nvlist_t * 2160zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare, 2161 boolean_t *l2cache, boolean_t *log) 2162{ 2163 char buf[MAXPATHLEN]; 2164 char *end; 2165 nvlist_t *nvroot, *search, *ret; 2166 uint64_t guid; 2167 2168 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0); 2169 2170 guid = strtoull(path, &end, 10); 2171 if (guid != 0 && *end == '\0') { 2172 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0); 2173 } else if (zpool_vdev_is_interior(path)) { 2174 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0); 2175 } else if (path[0] != '/') { 2176 (void) snprintf(buf, sizeof (buf), "%s%s", _PATH_DEV, path); 2177 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0); 2178 } else { 2179 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0); 2180 } 2181 2182 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE, 2183 &nvroot) == 0); 2184 2185 *avail_spare = B_FALSE; 2186 *l2cache = B_FALSE; 2187 if (log != NULL) 2188 *log = B_FALSE; 2189 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log); 2190 nvlist_free(search); 2191 2192 return (ret); 2193} 2194 2195static int 2196vdev_online(nvlist_t *nv) 2197{ 2198 uint64_t ival; 2199 2200 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 || 2201 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 || 2202 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0) 2203 return (0); 2204 2205 return (1); 2206} 2207 2208/* 2209 * Helper function for zpool_get_physpaths(). 2210 */ 2211static int 2212vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size, 2213 size_t *bytes_written) 2214{ 2215 size_t bytes_left, pos, rsz; 2216 char *tmppath; 2217 const char *format; 2218 2219 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH, 2220 &tmppath) != 0) 2221 return (EZFS_NODEVICE); 2222 2223 pos = *bytes_written; 2224 bytes_left = physpath_size - pos; 2225 format = (pos == 0) ? "%s" : " %s"; 2226 2227 rsz = snprintf(physpath + pos, bytes_left, format, tmppath); 2228 *bytes_written += rsz; 2229 2230 if (rsz >= bytes_left) { 2231 /* if physpath was not copied properly, clear it */ 2232 if (bytes_left != 0) { 2233 physpath[pos] = 0; 2234 } 2235 return (EZFS_NOSPC); 2236 } 2237 return (0); 2238} 2239 2240static int 2241vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size, 2242 size_t *rsz, boolean_t is_spare) 2243{ 2244 char *type; 2245 int ret; 2246 2247 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0) 2248 return (EZFS_INVALCONFIG); 2249 2250 if (strcmp(type, VDEV_TYPE_DISK) == 0) { 2251 /* 2252 * An active spare device has ZPOOL_CONFIG_IS_SPARE set. 2253 * For a spare vdev, we only want to boot from the active 2254 * spare device. 2255 */ 2256 if (is_spare) { 2257 uint64_t spare = 0; 2258 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 2259 &spare); 2260 if (!spare) 2261 return (EZFS_INVALCONFIG); 2262 } 2263 2264 if (vdev_online(nv)) { 2265 if ((ret = vdev_get_one_physpath(nv, physpath, 2266 phypath_size, rsz)) != 0) 2267 return (ret); 2268 } 2269 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 || 2270 strcmp(type, VDEV_TYPE_REPLACING) == 0 || 2271 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) { 2272 nvlist_t **child; 2273 uint_t count; 2274 int i, ret; 2275 2276 if (nvlist_lookup_nvlist_array(nv, 2277 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0) 2278 return (EZFS_INVALCONFIG); 2279 2280 for (i = 0; i < count; i++) { 2281 ret = vdev_get_physpaths(child[i], physpath, 2282 phypath_size, rsz, is_spare); 2283 if (ret == EZFS_NOSPC) 2284 return (ret); 2285 } 2286 } 2287 2288 return (EZFS_POOL_INVALARG); 2289} 2290 2291/* 2292 * Get phys_path for a root pool config. 2293 * Return 0 on success; non-zero on failure. 2294 */ 2295static int 2296zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size) 2297{ 2298 size_t rsz; 2299 nvlist_t *vdev_root; 2300 nvlist_t **child; 2301 uint_t count; 2302 char *type; 2303 2304 rsz = 0; 2305 2306 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 2307 &vdev_root) != 0) 2308 return (EZFS_INVALCONFIG); 2309 2310 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 || 2311 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN, 2312 &child, &count) != 0) 2313 return (EZFS_INVALCONFIG); 2314 2315 /* 2316 * root pool can only have a single top-level vdev. 2317 */ 2318 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1) 2319 return (EZFS_POOL_INVALARG); 2320 2321 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz, 2322 B_FALSE); 2323 2324 /* No online devices */ 2325 if (rsz == 0) 2326 return (EZFS_NODEVICE); 2327 2328 return (0); 2329} 2330 2331/* 2332 * Get phys_path for a root pool 2333 * Return 0 on success; non-zero on failure. 2334 */ 2335int 2336zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size) 2337{ 2338 return (zpool_get_config_physpath(zhp->zpool_config, physpath, 2339 phypath_size)); 2340} 2341 2342/* 2343 * If the device has being dynamically expanded then we need to relabel 2344 * the disk to use the new unallocated space. 2345 */ 2346static int 2347zpool_relabel_disk(libzfs_handle_t *hdl, const char *name) 2348{ 2349#ifdef illumos 2350 char path[MAXPATHLEN]; 2351 char errbuf[1024]; 2352 int fd, error; 2353 int (*_efi_use_whole_disk)(int); 2354 2355 if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT, 2356 "efi_use_whole_disk")) == NULL) 2357 return (-1); 2358 2359 (void) snprintf(path, sizeof (path), "%s/%s", ZFS_RDISK_ROOT, name); 2360 2361 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 2362 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2363 "relabel '%s': unable to open device"), name); 2364 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 2365 } 2366 2367 /* 2368 * It's possible that we might encounter an error if the device 2369 * does not have any unallocated space left. If so, we simply 2370 * ignore that error and continue on. 2371 */ 2372 error = _efi_use_whole_disk(fd); 2373 (void) close(fd); 2374 if (error && error != VT_ENOSPC) { 2375 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot " 2376 "relabel '%s': unable to read disk capacity"), name); 2377 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 2378 } 2379#endif /* illumos */ 2380 return (0); 2381} 2382 2383/* 2384 * Bring the specified vdev online. The 'flags' parameter is a set of the 2385 * ZFS_ONLINE_* flags. 2386 */ 2387int 2388zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags, 2389 vdev_state_t *newstate) 2390{ 2391 zfs_cmd_t zc = { 0 }; 2392 char msg[1024]; 2393 nvlist_t *tgt; 2394 boolean_t avail_spare, l2cache, islog; 2395 libzfs_handle_t *hdl = zhp->zpool_hdl; 2396 2397 if (flags & ZFS_ONLINE_EXPAND) { 2398 (void) snprintf(msg, sizeof (msg), 2399 dgettext(TEXT_DOMAIN, "cannot expand %s"), path); 2400 } else { 2401 (void) snprintf(msg, sizeof (msg), 2402 dgettext(TEXT_DOMAIN, "cannot online %s"), path); 2403 } 2404 2405 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2406 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2407 &islog)) == NULL) 2408 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2409 2410 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2411 2412 if (avail_spare) 2413 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2414 2415 if (flags & ZFS_ONLINE_EXPAND || 2416 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) { 2417 char *pathname = NULL; 2418 uint64_t wholedisk = 0; 2419 2420 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK, 2421 &wholedisk); 2422 verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH, 2423 &pathname) == 0); 2424 2425 /* 2426 * XXX - L2ARC 1.0 devices can't support expansion. 2427 */ 2428 if (l2cache) { 2429 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2430 "cannot expand cache devices")); 2431 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg)); 2432 } 2433 2434 if (wholedisk) { 2435 pathname += strlen(ZFS_DISK_ROOT) + 1; 2436 (void) zpool_relabel_disk(hdl, pathname); 2437 } 2438 } 2439 2440 zc.zc_cookie = VDEV_STATE_ONLINE; 2441 zc.zc_obj = flags; 2442 2443 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) { 2444 if (errno == EINVAL) { 2445 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split " 2446 "from this pool into a new one. Use '%s' " 2447 "instead"), "zpool detach"); 2448 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg)); 2449 } 2450 return (zpool_standard_error(hdl, errno, msg)); 2451 } 2452 2453 *newstate = zc.zc_cookie; 2454 return (0); 2455} 2456 2457/* 2458 * Take the specified vdev offline 2459 */ 2460int 2461zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp) 2462{ 2463 zfs_cmd_t zc = { 0 }; 2464 char msg[1024]; 2465 nvlist_t *tgt; 2466 boolean_t avail_spare, l2cache; 2467 libzfs_handle_t *hdl = zhp->zpool_hdl; 2468 2469 (void) snprintf(msg, sizeof (msg), 2470 dgettext(TEXT_DOMAIN, "cannot offline %s"), path); 2471 2472 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2473 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2474 NULL)) == NULL) 2475 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2476 2477 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2478 2479 if (avail_spare) 2480 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2481 2482 zc.zc_cookie = VDEV_STATE_OFFLINE; 2483 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0; 2484 2485 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2486 return (0); 2487 2488 switch (errno) { 2489 case EBUSY: 2490 2491 /* 2492 * There are no other replicas of this device. 2493 */ 2494 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2495 2496 case EEXIST: 2497 /* 2498 * The log device has unplayed logs 2499 */ 2500 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg)); 2501 2502 default: 2503 return (zpool_standard_error(hdl, errno, msg)); 2504 } 2505} 2506 2507/* 2508 * Mark the given vdev faulted. 2509 */ 2510int 2511zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2512{ 2513 zfs_cmd_t zc = { 0 }; 2514 char msg[1024]; 2515 libzfs_handle_t *hdl = zhp->zpool_hdl; 2516 2517 (void) snprintf(msg, sizeof (msg), 2518 dgettext(TEXT_DOMAIN, "cannot fault %llu"), guid); 2519 2520 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2521 zc.zc_guid = guid; 2522 zc.zc_cookie = VDEV_STATE_FAULTED; 2523 zc.zc_obj = aux; 2524 2525 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2526 return (0); 2527 2528 switch (errno) { 2529 case EBUSY: 2530 2531 /* 2532 * There are no other replicas of this device. 2533 */ 2534 return (zfs_error(hdl, EZFS_NOREPLICAS, msg)); 2535 2536 default: 2537 return (zpool_standard_error(hdl, errno, msg)); 2538 } 2539 2540} 2541 2542/* 2543 * Mark the given vdev degraded. 2544 */ 2545int 2546zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux) 2547{ 2548 zfs_cmd_t zc = { 0 }; 2549 char msg[1024]; 2550 libzfs_handle_t *hdl = zhp->zpool_hdl; 2551 2552 (void) snprintf(msg, sizeof (msg), 2553 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), guid); 2554 2555 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2556 zc.zc_guid = guid; 2557 zc.zc_cookie = VDEV_STATE_DEGRADED; 2558 zc.zc_obj = aux; 2559 2560 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) 2561 return (0); 2562 2563 return (zpool_standard_error(hdl, errno, msg)); 2564} 2565 2566/* 2567 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as 2568 * a hot spare. 2569 */ 2570static boolean_t 2571is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which) 2572{ 2573 nvlist_t **child; 2574 uint_t c, children; 2575 char *type; 2576 2577 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child, 2578 &children) == 0) { 2579 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE, 2580 &type) == 0); 2581 2582 if (strcmp(type, VDEV_TYPE_SPARE) == 0 && 2583 children == 2 && child[which] == tgt) 2584 return (B_TRUE); 2585 2586 for (c = 0; c < children; c++) 2587 if (is_replacing_spare(child[c], tgt, which)) 2588 return (B_TRUE); 2589 } 2590 2591 return (B_FALSE); 2592} 2593 2594/* 2595 * Attach new_disk (fully described by nvroot) to old_disk. 2596 * If 'replacing' is specified, the new disk will replace the old one. 2597 */ 2598int 2599zpool_vdev_attach(zpool_handle_t *zhp, 2600 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing) 2601{ 2602 zfs_cmd_t zc = { 0 }; 2603 char msg[1024]; 2604 int ret; 2605 nvlist_t *tgt; 2606 boolean_t avail_spare, l2cache, islog; 2607 uint64_t val; 2608 char *newname; 2609 nvlist_t **child; 2610 uint_t children; 2611 nvlist_t *config_root; 2612 libzfs_handle_t *hdl = zhp->zpool_hdl; 2613 boolean_t rootpool = zpool_is_bootable(zhp); 2614 2615 if (replacing) 2616 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2617 "cannot replace %s with %s"), old_disk, new_disk); 2618 else 2619 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN, 2620 "cannot attach %s to %s"), new_disk, old_disk); 2621 2622 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2623 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache, 2624 &islog)) == 0) 2625 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2626 2627 if (avail_spare) 2628 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2629 2630 if (l2cache) 2631 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2632 2633 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2634 zc.zc_cookie = replacing; 2635 2636 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 2637 &child, &children) != 0 || children != 1) { 2638 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2639 "new device must be a single disk")); 2640 return (zfs_error(hdl, EZFS_INVALCONFIG, msg)); 2641 } 2642 2643 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL), 2644 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0); 2645 2646 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL) 2647 return (-1); 2648 2649 /* 2650 * If the target is a hot spare that has been swapped in, we can only 2651 * replace it with another hot spare. 2652 */ 2653 if (replacing && 2654 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 && 2655 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache, 2656 NULL) == NULL || !avail_spare) && 2657 is_replacing_spare(config_root, tgt, 1)) { 2658 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2659 "can only be replaced by another hot spare")); 2660 free(newname); 2661 return (zfs_error(hdl, EZFS_BADTARGET, msg)); 2662 } 2663 2664 free(newname); 2665 2666 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0) 2667 return (-1); 2668 2669 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc); 2670 2671 zcmd_free_nvlists(&zc); 2672 2673 if (ret == 0) { 2674 if (rootpool) { 2675 /* 2676 * XXX need a better way to prevent user from 2677 * booting up a half-baked vdev. 2678 */ 2679 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make " 2680 "sure to wait until resilver is done " 2681 "before rebooting.\n")); 2682 (void) fprintf(stderr, "\n"); 2683 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "If " 2684 "you boot from pool '%s', you may need to update\n" 2685 "boot code on newly attached disk '%s'.\n\n" 2686 "Assuming you use GPT partitioning and 'da0' is " 2687 "your new boot disk\n" 2688 "you may use the following command:\n\n" 2689 "\tgpart bootcode -b /boot/pmbr -p " 2690 "/boot/gptzfsboot -i 1 da0\n\n"), 2691 zhp->zpool_name, new_disk); 2692 } 2693 return (0); 2694 } 2695 2696 switch (errno) { 2697 case ENOTSUP: 2698 /* 2699 * Can't attach to or replace this type of vdev. 2700 */ 2701 if (replacing) { 2702 uint64_t version = zpool_get_prop_int(zhp, 2703 ZPOOL_PROP_VERSION, NULL); 2704 2705 if (islog) 2706 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2707 "cannot replace a log with a spare")); 2708 else if (version >= SPA_VERSION_MULTI_REPLACE) 2709 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2710 "already in replacing/spare config; wait " 2711 "for completion or use 'zpool detach'")); 2712 else 2713 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2714 "cannot replace a replacing device")); 2715 } else { 2716 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2717 "can only attach to mirrors and top-level " 2718 "disks")); 2719 } 2720 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2721 break; 2722 2723 case EINVAL: 2724 /* 2725 * The new device must be a single disk. 2726 */ 2727 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2728 "new device must be a single disk")); 2729 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg); 2730 break; 2731 2732 case EBUSY: 2733 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"), 2734 new_disk); 2735 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2736 break; 2737 2738 case EOVERFLOW: 2739 /* 2740 * The new device is too small. 2741 */ 2742 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2743 "device is too small")); 2744 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2745 break; 2746 2747 case EDOM: 2748 /* 2749 * The new device has a different alignment requirement. 2750 */ 2751 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2752 "devices have different sector alignment")); 2753 (void) zfs_error(hdl, EZFS_BADDEV, msg); 2754 break; 2755 2756 case ENAMETOOLONG: 2757 /* 2758 * The resulting top-level vdev spec won't fit in the label. 2759 */ 2760 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg); 2761 break; 2762 2763 default: 2764 (void) zpool_standard_error(hdl, errno, msg); 2765 } 2766 2767 return (-1); 2768} 2769 2770/* 2771 * Detach the specified device. 2772 */ 2773int 2774zpool_vdev_detach(zpool_handle_t *zhp, const char *path) 2775{ 2776 zfs_cmd_t zc = { 0 }; 2777 char msg[1024]; 2778 nvlist_t *tgt; 2779 boolean_t avail_spare, l2cache; 2780 libzfs_handle_t *hdl = zhp->zpool_hdl; 2781 2782 (void) snprintf(msg, sizeof (msg), 2783 dgettext(TEXT_DOMAIN, "cannot detach %s"), path); 2784 2785 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 2786 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 2787 NULL)) == 0) 2788 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 2789 2790 if (avail_spare) 2791 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 2792 2793 if (l2cache) 2794 return (zfs_error(hdl, EZFS_ISL2CACHE, msg)); 2795 2796 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 2797 2798 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0) 2799 return (0); 2800 2801 switch (errno) { 2802 2803 case ENOTSUP: 2804 /* 2805 * Can't detach from this type of vdev. 2806 */ 2807 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only " 2808 "applicable to mirror and replacing vdevs")); 2809 (void) zfs_error(hdl, EZFS_BADTARGET, msg); 2810 break; 2811 2812 case EBUSY: 2813 /* 2814 * There are no other replicas of this device. 2815 */ 2816 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg); 2817 break; 2818 2819 default: 2820 (void) zpool_standard_error(hdl, errno, msg); 2821 } 2822 2823 return (-1); 2824} 2825 2826/* 2827 * Find a mirror vdev in the source nvlist. 2828 * 2829 * The mchild array contains a list of disks in one of the top-level mirrors 2830 * of the source pool. The schild array contains a list of disks that the 2831 * user specified on the command line. We loop over the mchild array to 2832 * see if any entry in the schild array matches. 2833 * 2834 * If a disk in the mchild array is found in the schild array, we return 2835 * the index of that entry. Otherwise we return -1. 2836 */ 2837static int 2838find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren, 2839 nvlist_t **schild, uint_t schildren) 2840{ 2841 uint_t mc; 2842 2843 for (mc = 0; mc < mchildren; mc++) { 2844 uint_t sc; 2845 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2846 mchild[mc], B_FALSE); 2847 2848 for (sc = 0; sc < schildren; sc++) { 2849 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp, 2850 schild[sc], B_FALSE); 2851 boolean_t result = (strcmp(mpath, spath) == 0); 2852 2853 free(spath); 2854 if (result) { 2855 free(mpath); 2856 return (mc); 2857 } 2858 } 2859 2860 free(mpath); 2861 } 2862 2863 return (-1); 2864} 2865 2866/* 2867 * Split a mirror pool. If newroot points to null, then a new nvlist 2868 * is generated and it is the responsibility of the caller to free it. 2869 */ 2870int 2871zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot, 2872 nvlist_t *props, splitflags_t flags) 2873{ 2874 zfs_cmd_t zc = { 0 }; 2875 char msg[1024]; 2876 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL; 2877 nvlist_t **varray = NULL, *zc_props = NULL; 2878 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0; 2879 libzfs_handle_t *hdl = zhp->zpool_hdl; 2880 uint64_t vers; 2881 boolean_t freelist = B_FALSE, memory_err = B_TRUE; 2882 int retval = 0; 2883 2884 (void) snprintf(msg, sizeof (msg), 2885 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name); 2886 2887 if (!zpool_name_valid(hdl, B_FALSE, newname)) 2888 return (zfs_error(hdl, EZFS_INVALIDNAME, msg)); 2889 2890 if ((config = zpool_get_config(zhp, NULL)) == NULL) { 2891 (void) fprintf(stderr, gettext("Internal error: unable to " 2892 "retrieve pool configuration\n")); 2893 return (-1); 2894 } 2895 2896 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree) 2897 == 0); 2898 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0); 2899 2900 if (props) { 2901 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE }; 2902 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name, 2903 props, vers, flags, msg)) == NULL) 2904 return (-1); 2905 } 2906 2907 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child, 2908 &children) != 0) { 2909 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2910 "Source pool is missing vdev tree")); 2911 nvlist_free(zc_props); 2912 return (-1); 2913 } 2914 2915 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *)); 2916 vcount = 0; 2917 2918 if (*newroot == NULL || 2919 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, 2920 &newchild, &newchildren) != 0) 2921 newchildren = 0; 2922 2923 for (c = 0; c < children; c++) { 2924 uint64_t is_log = B_FALSE, is_hole = B_FALSE; 2925 char *type; 2926 nvlist_t **mchild, *vdev; 2927 uint_t mchildren; 2928 int entry; 2929 2930 /* 2931 * Unlike cache & spares, slogs are stored in the 2932 * ZPOOL_CONFIG_CHILDREN array. We filter them out here. 2933 */ 2934 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, 2935 &is_log); 2936 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE, 2937 &is_hole); 2938 if (is_log || is_hole) { 2939 /* 2940 * Create a hole vdev and put it in the config. 2941 */ 2942 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0) 2943 goto out; 2944 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, 2945 VDEV_TYPE_HOLE) != 0) 2946 goto out; 2947 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE, 2948 1) != 0) 2949 goto out; 2950 if (lastlog == 0) 2951 lastlog = vcount; 2952 varray[vcount++] = vdev; 2953 continue; 2954 } 2955 lastlog = 0; 2956 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type) 2957 == 0); 2958 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) { 2959 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 2960 "Source pool must be composed only of mirrors\n")); 2961 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2962 goto out; 2963 } 2964 2965 verify(nvlist_lookup_nvlist_array(child[c], 2966 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0); 2967 2968 /* find or add an entry for this top-level vdev */ 2969 if (newchildren > 0 && 2970 (entry = find_vdev_entry(zhp, mchild, mchildren, 2971 newchild, newchildren)) >= 0) { 2972 /* We found a disk that the user specified. */ 2973 vdev = mchild[entry]; 2974 ++found; 2975 } else { 2976 /* User didn't specify a disk for this vdev. */ 2977 vdev = mchild[mchildren - 1]; 2978 } 2979 2980 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0) 2981 goto out; 2982 } 2983 2984 /* did we find every disk the user specified? */ 2985 if (found != newchildren) { 2986 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must " 2987 "include at most one disk from each mirror")); 2988 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg); 2989 goto out; 2990 } 2991 2992 /* Prepare the nvlist for populating. */ 2993 if (*newroot == NULL) { 2994 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0) 2995 goto out; 2996 freelist = B_TRUE; 2997 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE, 2998 VDEV_TYPE_ROOT) != 0) 2999 goto out; 3000 } else { 3001 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0); 3002 } 3003 3004 /* Add all the children we found */ 3005 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray, 3006 lastlog == 0 ? vcount : lastlog) != 0) 3007 goto out; 3008 3009 /* 3010 * If we're just doing a dry run, exit now with success. 3011 */ 3012 if (flags.dryrun) { 3013 memory_err = B_FALSE; 3014 freelist = B_FALSE; 3015 goto out; 3016 } 3017 3018 /* now build up the config list & call the ioctl */ 3019 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0) 3020 goto out; 3021 3022 if (nvlist_add_nvlist(newconfig, 3023 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 || 3024 nvlist_add_string(newconfig, 3025 ZPOOL_CONFIG_POOL_NAME, newname) != 0 || 3026 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0) 3027 goto out; 3028 3029 /* 3030 * The new pool is automatically part of the namespace unless we 3031 * explicitly export it. 3032 */ 3033 if (!flags.import) 3034 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT; 3035 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3036 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string)); 3037 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0) 3038 goto out; 3039 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0) 3040 goto out; 3041 3042 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) { 3043 retval = zpool_standard_error(hdl, errno, msg); 3044 goto out; 3045 } 3046 3047 freelist = B_FALSE; 3048 memory_err = B_FALSE; 3049 3050out: 3051 if (varray != NULL) { 3052 int v; 3053 3054 for (v = 0; v < vcount; v++) 3055 nvlist_free(varray[v]); 3056 free(varray); 3057 } 3058 zcmd_free_nvlists(&zc); 3059 nvlist_free(zc_props); 3060 nvlist_free(newconfig); 3061 if (freelist) { 3062 nvlist_free(*newroot); 3063 *newroot = NULL; 3064 } 3065 3066 if (retval != 0) 3067 return (retval); 3068 3069 if (memory_err) 3070 return (no_memory(hdl)); 3071 3072 return (0); 3073} 3074 3075/* 3076 * Remove the given device. Currently, this is supported only for hot spares 3077 * and level 2 cache devices. 3078 */ 3079int 3080zpool_vdev_remove(zpool_handle_t *zhp, const char *path) 3081{ 3082 zfs_cmd_t zc = { 0 }; 3083 char msg[1024]; 3084 nvlist_t *tgt; 3085 boolean_t avail_spare, l2cache, islog; 3086 libzfs_handle_t *hdl = zhp->zpool_hdl; 3087 uint64_t version; 3088 3089 (void) snprintf(msg, sizeof (msg), 3090 dgettext(TEXT_DOMAIN, "cannot remove %s"), path); 3091 3092 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3093 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache, 3094 &islog)) == 0) 3095 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3096 /* 3097 * XXX - this should just go away. 3098 */ 3099 if (!avail_spare && !l2cache && !islog) { 3100 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3101 "only inactive hot spares, cache, top-level, " 3102 "or log devices can be removed")); 3103 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3104 } 3105 3106 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL); 3107 if (islog && version < SPA_VERSION_HOLES) { 3108 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3109 "pool must be upgrade to support log removal")); 3110 return (zfs_error(hdl, EZFS_BADVERSION, msg)); 3111 } 3112 3113 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0); 3114 3115 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0) 3116 return (0); 3117 3118 return (zpool_standard_error(hdl, errno, msg)); 3119} 3120 3121/* 3122 * Clear the errors for the pool, or the particular device if specified. 3123 */ 3124int 3125zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) 3126{ 3127 zfs_cmd_t zc = { 0 }; 3128 char msg[1024]; 3129 nvlist_t *tgt; 3130 zpool_rewind_policy_t policy; 3131 boolean_t avail_spare, l2cache; 3132 libzfs_handle_t *hdl = zhp->zpool_hdl; 3133 nvlist_t *nvi = NULL; 3134 int error; 3135 3136 if (path) 3137 (void) snprintf(msg, sizeof (msg), 3138 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3139 path); 3140 else 3141 (void) snprintf(msg, sizeof (msg), 3142 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"), 3143 zhp->zpool_name); 3144 3145 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3146 if (path) { 3147 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, 3148 &l2cache, NULL)) == 0) 3149 return (zfs_error(hdl, EZFS_NODEVICE, msg)); 3150 3151 /* 3152 * Don't allow error clearing for hot spares. Do allow 3153 * error clearing for l2cache devices. 3154 */ 3155 if (avail_spare) 3156 return (zfs_error(hdl, EZFS_ISSPARE, msg)); 3157 3158 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, 3159 &zc.zc_guid) == 0); 3160 } 3161 3162 zpool_get_rewind_policy(rewindnvl, &policy); 3163 zc.zc_cookie = policy.zrp_request; 3164 3165 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0) 3166 return (-1); 3167 3168 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0) 3169 return (-1); 3170 3171 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 && 3172 errno == ENOMEM) { 3173 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { 3174 zcmd_free_nvlists(&zc); 3175 return (-1); 3176 } 3177 } 3178 3179 if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) && 3180 errno != EPERM && errno != EACCES)) { 3181 if (policy.zrp_request & 3182 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { 3183 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); 3184 zpool_rewind_exclaim(hdl, zc.zc_name, 3185 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), 3186 nvi); 3187 nvlist_free(nvi); 3188 } 3189 zcmd_free_nvlists(&zc); 3190 return (0); 3191 } 3192 3193 zcmd_free_nvlists(&zc); 3194 return (zpool_standard_error(hdl, errno, msg)); 3195} 3196 3197/* 3198 * Similar to zpool_clear(), but takes a GUID (used by fmd). 3199 */ 3200int 3201zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid) 3202{ 3203 zfs_cmd_t zc = { 0 }; 3204 char msg[1024]; 3205 libzfs_handle_t *hdl = zhp->zpool_hdl; 3206 3207 (void) snprintf(msg, sizeof (msg), 3208 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"), 3209 guid); 3210 3211 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3212 zc.zc_guid = guid; 3213 zc.zc_cookie = ZPOOL_NO_REWIND; 3214 3215 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0) 3216 return (0); 3217 3218 return (zpool_standard_error(hdl, errno, msg)); 3219} 3220 3221/* 3222 * Change the GUID for a pool. 3223 */ 3224int 3225zpool_reguid(zpool_handle_t *zhp) 3226{ 3227 char msg[1024]; 3228 libzfs_handle_t *hdl = zhp->zpool_hdl; 3229 zfs_cmd_t zc = { 0 }; 3230 3231 (void) snprintf(msg, sizeof (msg), 3232 dgettext(TEXT_DOMAIN, "cannot reguid '%s'"), zhp->zpool_name); 3233 3234 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3235 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REGUID, &zc) == 0) 3236 return (0); 3237 3238 return (zpool_standard_error(hdl, errno, msg)); 3239} 3240 3241/* 3242 * Reopen the pool. 3243 */ 3244int 3245zpool_reopen(zpool_handle_t *zhp) 3246{ 3247 zfs_cmd_t zc = { 0 }; 3248 char msg[1024]; 3249 libzfs_handle_t *hdl = zhp->zpool_hdl; 3250 3251 (void) snprintf(msg, sizeof (msg), 3252 dgettext(TEXT_DOMAIN, "cannot reopen '%s'"), 3253 zhp->zpool_name); 3254 3255 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3256 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REOPEN, &zc) == 0) 3257 return (0); 3258 return (zpool_standard_error(hdl, errno, msg)); 3259} 3260 3261/* 3262 * Convert from a devid string to a path. 3263 */ 3264static char * 3265devid_to_path(char *devid_str) 3266{ 3267 ddi_devid_t devid; 3268 char *minor; 3269 char *path; 3270 devid_nmlist_t *list = NULL; 3271 int ret; 3272 3273 if (devid_str_decode(devid_str, &devid, &minor) != 0) 3274 return (NULL); 3275 3276 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list); 3277 3278 devid_str_free(minor); 3279 devid_free(devid); 3280 3281 if (ret != 0) 3282 return (NULL); 3283 3284 /* 3285 * In a case the strdup() fails, we will just return NULL below. 3286 */ 3287 path = strdup(list[0].devname); 3288 3289 devid_free_nmlist(list); 3290 3291 return (path); 3292} 3293 3294/* 3295 * Convert from a path to a devid string. 3296 */ 3297static char * 3298path_to_devid(const char *path) 3299{ 3300#ifdef have_devid 3301 int fd; 3302 ddi_devid_t devid; 3303 char *minor, *ret; 3304 3305 if ((fd = open(path, O_RDONLY)) < 0) 3306 return (NULL); 3307 3308 minor = NULL; 3309 ret = NULL; 3310 if (devid_get(fd, &devid) == 0) { 3311 if (devid_get_minor_name(fd, &minor) == 0) 3312 ret = devid_str_encode(devid, minor); 3313 if (minor != NULL) 3314 devid_str_free(minor); 3315 devid_free(devid); 3316 } 3317 (void) close(fd); 3318 3319 return (ret); 3320#else 3321 return (NULL); 3322#endif 3323} 3324 3325/* 3326 * Issue the necessary ioctl() to update the stored path value for the vdev. We 3327 * ignore any failure here, since a common case is for an unprivileged user to 3328 * type 'zpool status', and we'll display the correct information anyway. 3329 */ 3330static void 3331set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path) 3332{ 3333 zfs_cmd_t zc = { 0 }; 3334 3335 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3336 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value)); 3337 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3338 &zc.zc_guid) == 0); 3339 3340 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc); 3341} 3342 3343/* 3344 * Given a vdev, return the name to display in iostat. If the vdev has a path, 3345 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type. 3346 * We also check if this is a whole disk, in which case we strip off the 3347 * trailing 's0' slice name. 3348 * 3349 * This routine is also responsible for identifying when disks have been 3350 * reconfigured in a new location. The kernel will have opened the device by 3351 * devid, but the path will still refer to the old location. To catch this, we 3352 * first do a path -> devid translation (which is fast for the common case). If 3353 * the devid matches, we're done. If not, we do a reverse devid -> path 3354 * translation and issue the appropriate ioctl() to update the path of the vdev. 3355 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any 3356 * of these checks. 3357 */ 3358char * 3359zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv, 3360 boolean_t verbose) 3361{ 3362 char *path, *devid; 3363 uint64_t value; 3364 char buf[64]; 3365 vdev_stat_t *vs; 3366 uint_t vsc; 3367 int have_stats; 3368 int have_path; 3369 3370 have_stats = nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, 3371 (uint64_t **)&vs, &vsc) == 0; 3372 have_path = nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0; 3373 3374 /* 3375 * If the device is not currently present, assume it will not 3376 * come back at the same device path. Display the device by GUID. 3377 */ 3378 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &value) == 0 || 3379 have_path && have_stats && vs->vs_state <= VDEV_STATE_CANT_OPEN) { 3380 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, 3381 &value) == 0); 3382 (void) snprintf(buf, sizeof (buf), "%llu", 3383 (u_longlong_t)value); 3384 path = buf; 3385 } else if (have_path) { 3386 3387 /* 3388 * If the device is dead (faulted, offline, etc) then don't 3389 * bother opening it. Otherwise we may be forcing the user to 3390 * open a misbehaving device, which can have undesirable 3391 * effects. 3392 */ 3393 if ((have_stats == 0 || 3394 vs->vs_state >= VDEV_STATE_DEGRADED) && 3395 zhp != NULL && 3396 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) { 3397 /* 3398 * Determine if the current path is correct. 3399 */ 3400 char *newdevid = path_to_devid(path); 3401 3402 if (newdevid == NULL || 3403 strcmp(devid, newdevid) != 0) { 3404 char *newpath; 3405 3406 if ((newpath = devid_to_path(devid)) != NULL) { 3407 /* 3408 * Update the path appropriately. 3409 */ 3410 set_path(zhp, nv, newpath); 3411 if (nvlist_add_string(nv, 3412 ZPOOL_CONFIG_PATH, newpath) == 0) 3413 verify(nvlist_lookup_string(nv, 3414 ZPOOL_CONFIG_PATH, 3415 &path) == 0); 3416 free(newpath); 3417 } 3418 } 3419 3420 if (newdevid) 3421 devid_str_free(newdevid); 3422 } 3423 3424#ifdef illumos 3425 if (strncmp(path, ZFS_DISK_ROOTD, strlen(ZFS_DISK_ROOTD)) == 0) 3426 path += strlen(ZFS_DISK_ROOTD); 3427 3428 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 3429 &value) == 0 && value) { 3430 int pathlen = strlen(path); 3431 char *tmp = zfs_strdup(hdl, path); 3432 3433 /* 3434 * If it starts with c#, and ends with "s0", chop 3435 * the "s0" off, or if it ends with "s0/old", remove 3436 * the "s0" from the middle. 3437 */ 3438 if (CTD_CHECK(tmp)) { 3439 if (strcmp(&tmp[pathlen - 2], "s0") == 0) { 3440 tmp[pathlen - 2] = '\0'; 3441 } else if (pathlen > 6 && 3442 strcmp(&tmp[pathlen - 6], "s0/old") == 0) { 3443 (void) strcpy(&tmp[pathlen - 6], 3444 "/old"); 3445 } 3446 } 3447 return (tmp); 3448 } 3449#else /* !illumos */ 3450 if (strncmp(path, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 3451 path += sizeof(_PATH_DEV) - 1; 3452#endif /* illumos */ 3453 } else { 3454 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0); 3455 3456 /* 3457 * If it's a raidz device, we need to stick in the parity level. 3458 */ 3459 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) { 3460 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY, 3461 &value) == 0); 3462 (void) snprintf(buf, sizeof (buf), "%s%llu", path, 3463 (u_longlong_t)value); 3464 path = buf; 3465 } 3466 3467 /* 3468 * We identify each top-level vdev by using a <type-id> 3469 * naming convention. 3470 */ 3471 if (verbose) { 3472 uint64_t id; 3473 3474 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID, 3475 &id) == 0); 3476 (void) snprintf(buf, sizeof (buf), "%s-%llu", path, 3477 (u_longlong_t)id); 3478 path = buf; 3479 } 3480 } 3481 3482 return (zfs_strdup(hdl, path)); 3483} 3484 3485static int 3486zbookmark_mem_compare(const void *a, const void *b) 3487{ 3488 return (memcmp(a, b, sizeof (zbookmark_phys_t))); 3489} 3490 3491/* 3492 * Retrieve the persistent error log, uniquify the members, and return to the 3493 * caller. 3494 */ 3495int 3496zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp) 3497{ 3498 zfs_cmd_t zc = { 0 }; 3499 uint64_t count; 3500 zbookmark_phys_t *zb = NULL; 3501 int i; 3502 3503 /* 3504 * Retrieve the raw error list from the kernel. If the number of errors 3505 * has increased, allocate more space and continue until we get the 3506 * entire list. 3507 */ 3508 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT, 3509 &count) == 0); 3510 if (count == 0) 3511 return (0); 3512 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl, 3513 count * sizeof (zbookmark_phys_t))) == (uintptr_t)NULL) 3514 return (-1); 3515 zc.zc_nvlist_dst_size = count; 3516 (void) strcpy(zc.zc_name, zhp->zpool_name); 3517 for (;;) { 3518 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG, 3519 &zc) != 0) { 3520 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3521 if (errno == ENOMEM) { 3522 void *dst; 3523 3524 count = zc.zc_nvlist_dst_size; 3525 dst = zfs_alloc(zhp->zpool_hdl, count * 3526 sizeof (zbookmark_phys_t)); 3527 if (dst == NULL) 3528 return (-1); 3529 zc.zc_nvlist_dst = (uintptr_t)dst; 3530 } else { 3531 return (-1); 3532 } 3533 } else { 3534 break; 3535 } 3536 } 3537 3538 /* 3539 * Sort the resulting bookmarks. This is a little confusing due to the 3540 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last 3541 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks 3542 * _not_ copied as part of the process. So we point the start of our 3543 * array appropriate and decrement the total number of elements. 3544 */ 3545 zb = ((zbookmark_phys_t *)(uintptr_t)zc.zc_nvlist_dst) + 3546 zc.zc_nvlist_dst_size; 3547 count -= zc.zc_nvlist_dst_size; 3548 3549 qsort(zb, count, sizeof (zbookmark_phys_t), zbookmark_mem_compare); 3550 3551 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0); 3552 3553 /* 3554 * Fill in the nverrlistp with nvlist's of dataset and object numbers. 3555 */ 3556 for (i = 0; i < count; i++) { 3557 nvlist_t *nv; 3558 3559 /* ignoring zb_blkid and zb_level for now */ 3560 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset && 3561 zb[i-1].zb_object == zb[i].zb_object) 3562 continue; 3563 3564 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0) 3565 goto nomem; 3566 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET, 3567 zb[i].zb_objset) != 0) { 3568 nvlist_free(nv); 3569 goto nomem; 3570 } 3571 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT, 3572 zb[i].zb_object) != 0) { 3573 nvlist_free(nv); 3574 goto nomem; 3575 } 3576 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) { 3577 nvlist_free(nv); 3578 goto nomem; 3579 } 3580 nvlist_free(nv); 3581 } 3582 3583 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3584 return (0); 3585 3586nomem: 3587 free((void *)(uintptr_t)zc.zc_nvlist_dst); 3588 return (no_memory(zhp->zpool_hdl)); 3589} 3590 3591/* 3592 * Upgrade a ZFS pool to the latest on-disk version. 3593 */ 3594int 3595zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version) 3596{ 3597 zfs_cmd_t zc = { 0 }; 3598 libzfs_handle_t *hdl = zhp->zpool_hdl; 3599 3600 (void) strcpy(zc.zc_name, zhp->zpool_name); 3601 zc.zc_cookie = new_version; 3602 3603 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0) 3604 return (zpool_standard_error_fmt(hdl, errno, 3605 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"), 3606 zhp->zpool_name)); 3607 return (0); 3608} 3609 3610void 3611zfs_save_arguments(int argc, char **argv, char *string, int len) 3612{ 3613 (void) strlcpy(string, basename(argv[0]), len); 3614 for (int i = 1; i < argc; i++) { 3615 (void) strlcat(string, " ", len); 3616 (void) strlcat(string, argv[i], len); 3617 } 3618} 3619 3620int 3621zpool_log_history(libzfs_handle_t *hdl, const char *message) 3622{ 3623 zfs_cmd_t zc = { 0 }; 3624 nvlist_t *args; 3625 int err; 3626 3627 args = fnvlist_alloc(); 3628 fnvlist_add_string(args, "message", message); 3629 err = zcmd_write_src_nvlist(hdl, &zc, args); 3630 if (err == 0) 3631 err = ioctl(hdl->libzfs_fd, ZFS_IOC_LOG_HISTORY, &zc); 3632 nvlist_free(args); 3633 zcmd_free_nvlists(&zc); 3634 return (err); 3635} 3636 3637/* 3638 * Perform ioctl to get some command history of a pool. 3639 * 3640 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the 3641 * logical offset of the history buffer to start reading from. 3642 * 3643 * Upon return, 'off' is the next logical offset to read from and 3644 * 'len' is the actual amount of bytes read into 'buf'. 3645 */ 3646static int 3647get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len) 3648{ 3649 zfs_cmd_t zc = { 0 }; 3650 libzfs_handle_t *hdl = zhp->zpool_hdl; 3651 3652 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3653 3654 zc.zc_history = (uint64_t)(uintptr_t)buf; 3655 zc.zc_history_len = *len; 3656 zc.zc_history_offset = *off; 3657 3658 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) { 3659 switch (errno) { 3660 case EPERM: 3661 return (zfs_error_fmt(hdl, EZFS_PERM, 3662 dgettext(TEXT_DOMAIN, 3663 "cannot show history for pool '%s'"), 3664 zhp->zpool_name)); 3665 case ENOENT: 3666 return (zfs_error_fmt(hdl, EZFS_NOHISTORY, 3667 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3668 "'%s'"), zhp->zpool_name)); 3669 case ENOTSUP: 3670 return (zfs_error_fmt(hdl, EZFS_BADVERSION, 3671 dgettext(TEXT_DOMAIN, "cannot get history for pool " 3672 "'%s', pool must be upgraded"), zhp->zpool_name)); 3673 default: 3674 return (zpool_standard_error_fmt(hdl, errno, 3675 dgettext(TEXT_DOMAIN, 3676 "cannot get history for '%s'"), zhp->zpool_name)); 3677 } 3678 } 3679 3680 *len = zc.zc_history_len; 3681 *off = zc.zc_history_offset; 3682 3683 return (0); 3684} 3685 3686/* 3687 * Process the buffer of nvlists, unpacking and storing each nvlist record 3688 * into 'records'. 'leftover' is set to the number of bytes that weren't 3689 * processed as there wasn't a complete record. 3690 */ 3691int 3692zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover, 3693 nvlist_t ***records, uint_t *numrecords) 3694{ 3695 uint64_t reclen; 3696 nvlist_t *nv; 3697 int i; 3698 3699 while (bytes_read > sizeof (reclen)) { 3700 3701 /* get length of packed record (stored as little endian) */ 3702 for (i = 0, reclen = 0; i < sizeof (reclen); i++) 3703 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i); 3704 3705 if (bytes_read < sizeof (reclen) + reclen) 3706 break; 3707 3708 /* unpack record */ 3709 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0) 3710 return (ENOMEM); 3711 bytes_read -= sizeof (reclen) + reclen; 3712 buf += sizeof (reclen) + reclen; 3713 3714 /* add record to nvlist array */ 3715 (*numrecords)++; 3716 if (ISP2(*numrecords + 1)) { 3717 *records = realloc(*records, 3718 *numrecords * 2 * sizeof (nvlist_t *)); 3719 } 3720 (*records)[*numrecords - 1] = nv; 3721 } 3722 3723 *leftover = bytes_read; 3724 return (0); 3725} 3726 3727/* from spa_history.c: spa_history_create_obj() */ 3728#define HIS_BUF_LEN_DEF (128 << 10) 3729#define HIS_BUF_LEN_MAX (1 << 30) 3730 3731/* 3732 * Retrieve the command history of a pool. 3733 */ 3734int 3735zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp) 3736{ 3737 char *buf; 3738 uint64_t buflen = HIS_BUF_LEN_DEF; 3739 uint64_t off = 0; 3740 nvlist_t **records = NULL; 3741 uint_t numrecords = 0; 3742 int err, i; 3743 3744 buf = malloc(buflen); 3745 if (buf == NULL) 3746 return (ENOMEM); 3747 do { 3748 uint64_t bytes_read = buflen; 3749 uint64_t leftover; 3750 3751 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0) 3752 break; 3753 3754 /* if nothing else was read in, we're at EOF, just return */ 3755 if (bytes_read == 0) 3756 break; 3757 3758 if ((err = zpool_history_unpack(buf, bytes_read, 3759 &leftover, &records, &numrecords)) != 0) 3760 break; 3761 off -= leftover; 3762 if (leftover == bytes_read) { 3763 /* 3764 * no progress made, because buffer is not big enough 3765 * to hold this record; resize and retry. 3766 */ 3767 buflen *= 2; 3768 free(buf); 3769 buf = NULL; 3770 if ((buflen >= HIS_BUF_LEN_MAX) || 3771 ((buf = malloc(buflen)) == NULL)) { 3772 err = ENOMEM; 3773 break; 3774 } 3775 } 3776 3777 /* CONSTCOND */ 3778 } while (1); 3779 3780 free(buf); 3781 3782 if (!err) { 3783 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0); 3784 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD, 3785 records, numrecords) == 0); 3786 } 3787 for (i = 0; i < numrecords; i++) 3788 nvlist_free(records[i]); 3789 free(records); 3790 3791 return (err); 3792} 3793 3794void 3795zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj, 3796 char *pathname, size_t len) 3797{ 3798 zfs_cmd_t zc = { 0 }; 3799 boolean_t mounted = B_FALSE; 3800 char *mntpnt = NULL; 3801 char dsname[MAXNAMELEN]; 3802 3803 if (dsobj == 0) { 3804 /* special case for the MOS */ 3805 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", obj); 3806 return; 3807 } 3808 3809 /* get the dataset's name */ 3810 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name)); 3811 zc.zc_obj = dsobj; 3812 if (ioctl(zhp->zpool_hdl->libzfs_fd, 3813 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) { 3814 /* just write out a path of two object numbers */ 3815 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>", 3816 dsobj, obj); 3817 return; 3818 } 3819 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname)); 3820 3821 /* find out if the dataset is mounted */ 3822 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt); 3823 3824 /* get the corrupted object's path */ 3825 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name)); 3826 zc.zc_obj = obj; 3827 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH, 3828 &zc) == 0) { 3829 if (mounted) { 3830 (void) snprintf(pathname, len, "%s%s", mntpnt, 3831 zc.zc_value); 3832 } else { 3833 (void) snprintf(pathname, len, "%s:%s", 3834 dsname, zc.zc_value); 3835 } 3836 } else { 3837 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, obj); 3838 } 3839 free(mntpnt); 3840} 3841 3842#ifdef illumos 3843/* 3844 * Read the EFI label from the config, if a label does not exist then 3845 * pass back the error to the caller. If the caller has passed a non-NULL 3846 * diskaddr argument then we set it to the starting address of the EFI 3847 * partition. 3848 */ 3849static int 3850read_efi_label(nvlist_t *config, diskaddr_t *sb) 3851{ 3852 char *path; 3853 int fd; 3854 char diskname[MAXPATHLEN]; 3855 int err = -1; 3856 3857 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0) 3858 return (err); 3859 3860 (void) snprintf(diskname, sizeof (diskname), "%s%s", ZFS_RDISK_ROOT, 3861 strrchr(path, '/')); 3862 if ((fd = open(diskname, O_RDONLY|O_NDELAY)) >= 0) { 3863 struct dk_gpt *vtoc; 3864 3865 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) { 3866 if (sb != NULL) 3867 *sb = vtoc->efi_parts[0].p_start; 3868 efi_free(vtoc); 3869 } 3870 (void) close(fd); 3871 } 3872 return (err); 3873} 3874 3875/* 3876 * determine where a partition starts on a disk in the current 3877 * configuration 3878 */ 3879static diskaddr_t 3880find_start_block(nvlist_t *config) 3881{ 3882 nvlist_t **child; 3883 uint_t c, children; 3884 diskaddr_t sb = MAXOFFSET_T; 3885 uint64_t wholedisk; 3886 3887 if (nvlist_lookup_nvlist_array(config, 3888 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) { 3889 if (nvlist_lookup_uint64(config, 3890 ZPOOL_CONFIG_WHOLE_DISK, 3891 &wholedisk) != 0 || !wholedisk) { 3892 return (MAXOFFSET_T); 3893 } 3894 if (read_efi_label(config, &sb) < 0) 3895 sb = MAXOFFSET_T; 3896 return (sb); 3897 } 3898 3899 for (c = 0; c < children; c++) { 3900 sb = find_start_block(child[c]); 3901 if (sb != MAXOFFSET_T) { 3902 return (sb); 3903 } 3904 } 3905 return (MAXOFFSET_T); 3906} 3907#endif /* illumos */ 3908 3909/* 3910 * Label an individual disk. The name provided is the short name, 3911 * stripped of any leading /dev path. 3912 */ 3913int 3914zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name) 3915{ 3916#ifdef illumos 3917 char path[MAXPATHLEN]; 3918 struct dk_gpt *vtoc; 3919 int fd; 3920 size_t resv = EFI_MIN_RESV_SIZE; 3921 uint64_t slice_size; 3922 diskaddr_t start_block; 3923 char errbuf[1024]; 3924 3925 /* prepare an error message just in case */ 3926 (void) snprintf(errbuf, sizeof (errbuf), 3927 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name); 3928 3929 if (zhp) { 3930 nvlist_t *nvroot; 3931 3932 verify(nvlist_lookup_nvlist(zhp->zpool_config, 3933 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0); 3934 3935 if (zhp->zpool_start_block == 0) 3936 start_block = find_start_block(nvroot); 3937 else 3938 start_block = zhp->zpool_start_block; 3939 zhp->zpool_start_block = start_block; 3940 } else { 3941 /* new pool */ 3942 start_block = NEW_START_BLOCK; 3943 } 3944 3945 (void) snprintf(path, sizeof (path), "%s/%s%s", ZFS_RDISK_ROOT, name, 3946 BACKUP_SLICE); 3947 3948 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) { 3949 /* 3950 * This shouldn't happen. We've long since verified that this 3951 * is a valid device. 3952 */ 3953 zfs_error_aux(hdl, 3954 dgettext(TEXT_DOMAIN, "unable to open device")); 3955 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf)); 3956 } 3957 3958 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) { 3959 /* 3960 * The only way this can fail is if we run out of memory, or we 3961 * were unable to read the disk's capacity 3962 */ 3963 if (errno == ENOMEM) 3964 (void) no_memory(hdl); 3965 3966 (void) close(fd); 3967 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 3968 "unable to read disk capacity"), name); 3969 3970 return (zfs_error(hdl, EZFS_NOCAP, errbuf)); 3971 } 3972 3973 slice_size = vtoc->efi_last_u_lba + 1; 3974 slice_size -= EFI_MIN_RESV_SIZE; 3975 if (start_block == MAXOFFSET_T) 3976 start_block = NEW_START_BLOCK; 3977 slice_size -= start_block; 3978 3979 vtoc->efi_parts[0].p_start = start_block; 3980 vtoc->efi_parts[0].p_size = slice_size; 3981 3982 /* 3983 * Why we use V_USR: V_BACKUP confuses users, and is considered 3984 * disposable by some EFI utilities (since EFI doesn't have a backup 3985 * slice). V_UNASSIGNED is supposed to be used only for zero size 3986 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT, 3987 * etc. were all pretty specific. V_USR is as close to reality as we 3988 * can get, in the absence of V_OTHER. 3989 */ 3990 vtoc->efi_parts[0].p_tag = V_USR; 3991 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs"); 3992 3993 vtoc->efi_parts[8].p_start = slice_size + start_block; 3994 vtoc->efi_parts[8].p_size = resv; 3995 vtoc->efi_parts[8].p_tag = V_RESERVED; 3996 3997 if (efi_write(fd, vtoc) != 0) { 3998 /* 3999 * Some block drivers (like pcata) may not support EFI 4000 * GPT labels. Print out a helpful error message dir- 4001 * ecting the user to manually label the disk and give 4002 * a specific slice. 4003 */ 4004 (void) close(fd); 4005 efi_free(vtoc); 4006 4007 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4008 "try using fdisk(1M) and then provide a specific slice")); 4009 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf)); 4010 } 4011 4012 (void) close(fd); 4013 efi_free(vtoc); 4014#endif /* illumos */ 4015 return (0); 4016} 4017 4018static boolean_t 4019supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf) 4020{ 4021 char *type; 4022 nvlist_t **child; 4023 uint_t children, c; 4024 4025 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_TYPE, &type) == 0); 4026 if (strcmp(type, VDEV_TYPE_FILE) == 0 || 4027 strcmp(type, VDEV_TYPE_HOLE) == 0 || 4028 strcmp(type, VDEV_TYPE_MISSING) == 0) { 4029 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4030 "vdev type '%s' is not supported"), type); 4031 (void) zfs_error(hdl, EZFS_VDEVNOTSUP, errbuf); 4032 return (B_FALSE); 4033 } 4034 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN, 4035 &child, &children) == 0) { 4036 for (c = 0; c < children; c++) { 4037 if (!supported_dump_vdev_type(hdl, child[c], errbuf)) 4038 return (B_FALSE); 4039 } 4040 } 4041 return (B_TRUE); 4042} 4043 4044/* 4045 * Check if this zvol is allowable for use as a dump device; zero if 4046 * it is, > 0 if it isn't, < 0 if it isn't a zvol. 4047 * 4048 * Allowable storage configurations include mirrors, all raidz variants, and 4049 * pools with log, cache, and spare devices. Pools which are backed by files or 4050 * have missing/hole vdevs are not suitable. 4051 */ 4052int 4053zvol_check_dump_config(char *arg) 4054{ 4055 zpool_handle_t *zhp = NULL; 4056 nvlist_t *config, *nvroot; 4057 char *p, *volname; 4058 nvlist_t **top; 4059 uint_t toplevels; 4060 libzfs_handle_t *hdl; 4061 char errbuf[1024]; 4062 char poolname[ZPOOL_MAXNAMELEN]; 4063 int pathlen = strlen(ZVOL_FULL_DEV_DIR); 4064 int ret = 1; 4065 4066 if (strncmp(arg, ZVOL_FULL_DEV_DIR, pathlen)) { 4067 return (-1); 4068 } 4069 4070 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, 4071 "dump is not supported on device '%s'"), arg); 4072 4073 if ((hdl = libzfs_init()) == NULL) 4074 return (1); 4075 libzfs_print_on_error(hdl, B_TRUE); 4076 4077 volname = arg + pathlen; 4078 4079 /* check the configuration of the pool */ 4080 if ((p = strchr(volname, '/')) == NULL) { 4081 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4082 "malformed dataset name")); 4083 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf); 4084 return (1); 4085 } else if (p - volname >= ZFS_MAXNAMELEN) { 4086 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4087 "dataset name is too long")); 4088 (void) zfs_error(hdl, EZFS_NAMETOOLONG, errbuf); 4089 return (1); 4090 } else { 4091 (void) strncpy(poolname, volname, p - volname); 4092 poolname[p - volname] = '\0'; 4093 } 4094 4095 if ((zhp = zpool_open(hdl, poolname)) == NULL) { 4096 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4097 "could not open pool '%s'"), poolname); 4098 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf); 4099 goto out; 4100 } 4101 config = zpool_get_config(zhp, NULL); 4102 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 4103 &nvroot) != 0) { 4104 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, 4105 "could not obtain vdev configuration for '%s'"), poolname); 4106 (void) zfs_error(hdl, EZFS_INVALCONFIG, errbuf); 4107 goto out; 4108 } 4109 4110 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 4111 &top, &toplevels) == 0); 4112 4113 if (!supported_dump_vdev_type(hdl, top[0], errbuf)) { 4114 goto out; 4115 } 4116 ret = 0; 4117 4118out: 4119 if (zhp) 4120 zpool_close(zhp); 4121 libzfs_fini(hdl); 4122 return (ret); 4123} 4124