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