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