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