zpool_vdev.c revision 297077
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2013 by Delphix. All rights reserved. 25 */ 26 27/* 28 * Functions to convert between a list of vdevs and an nvlist representing the 29 * configuration. Each entry in the list can be one of: 30 * 31 * Device vdevs 32 * disk=(path=..., devid=...) 33 * file=(path=...) 34 * 35 * Group vdevs 36 * raidz[1|2]=(...) 37 * mirror=(...) 38 * 39 * Hot spares 40 * 41 * While the underlying implementation supports it, group vdevs cannot contain 42 * other group vdevs. All userland verification of devices is contained within 43 * this file. If successful, the nvlist returned can be passed directly to the 44 * kernel; we've done as much verification as possible in userland. 45 * 46 * Hot spares are a special case, and passed down as an array of disk vdevs, at 47 * the same level as the root of the vdev tree. 48 * 49 * The only function exported by this file is 'make_root_vdev'. The 50 * function performs several passes: 51 * 52 * 1. Construct the vdev specification. Performs syntax validation and 53 * makes sure each device is valid. 54 * 2. Check for devices in use. Using libdiskmgt, makes sure that no 55 * devices are also in use. Some can be overridden using the 'force' 56 * flag, others cannot. 57 * 3. Check for replication errors if the 'force' flag is not specified. 58 * validates that the replication level is consistent across the 59 * entire pool. 60 * 4. Call libzfs to label any whole disks with an EFI label. 61 */ 62 63#include <assert.h> 64#include <devid.h> 65#include <errno.h> 66#include <fcntl.h> 67#include <libintl.h> 68#include <libnvpair.h> 69#include <limits.h> 70#include <stdio.h> 71#include <string.h> 72#include <unistd.h> 73#include <paths.h> 74#include <sys/stat.h> 75#include <sys/disk.h> 76#include <sys/mntent.h> 77#include <libgeom.h> 78 79#include "zpool_util.h" 80 81#define DISK_ROOT "/dev/dsk" 82#define RDISK_ROOT "/dev/rdsk" 83#define BACKUP_SLICE "s2" 84 85/* 86 * For any given vdev specification, we can have multiple errors. The 87 * vdev_error() function keeps track of whether we have seen an error yet, and 88 * prints out a header if its the first error we've seen. 89 */ 90boolean_t error_seen; 91boolean_t is_force; 92 93/*PRINTFLIKE1*/ 94static void 95vdev_error(const char *fmt, ...) 96{ 97 va_list ap; 98 99 if (!error_seen) { 100 (void) fprintf(stderr, gettext("invalid vdev specification\n")); 101 if (!is_force) 102 (void) fprintf(stderr, gettext("use '-f' to override " 103 "the following errors:\n")); 104 else 105 (void) fprintf(stderr, gettext("the following errors " 106 "must be manually repaired:\n")); 107 error_seen = B_TRUE; 108 } 109 110 va_start(ap, fmt); 111 (void) vfprintf(stderr, fmt, ap); 112 va_end(ap); 113} 114 115#ifdef illumos 116static void 117libdiskmgt_error(int error) 118{ 119 /* 120 * ENXIO/ENODEV is a valid error message if the device doesn't live in 121 * /dev/dsk. Don't bother printing an error message in this case. 122 */ 123 if (error == ENXIO || error == ENODEV) 124 return; 125 126 (void) fprintf(stderr, gettext("warning: device in use checking " 127 "failed: %s\n"), strerror(error)); 128} 129 130/* 131 * Validate a device, passing the bulk of the work off to libdiskmgt. 132 */ 133static int 134check_slice(const char *path, int force, boolean_t wholedisk, boolean_t isspare) 135{ 136 char *msg; 137 int error = 0; 138 dm_who_type_t who; 139 140 if (force) 141 who = DM_WHO_ZPOOL_FORCE; 142 else if (isspare) 143 who = DM_WHO_ZPOOL_SPARE; 144 else 145 who = DM_WHO_ZPOOL; 146 147 if (dm_inuse((char *)path, &msg, who, &error) || error) { 148 if (error != 0) { 149 libdiskmgt_error(error); 150 return (0); 151 } else { 152 vdev_error("%s", msg); 153 free(msg); 154 return (-1); 155 } 156 } 157 158 /* 159 * If we're given a whole disk, ignore overlapping slices since we're 160 * about to label it anyway. 161 */ 162 error = 0; 163 if (!wholedisk && !force && 164 (dm_isoverlapping((char *)path, &msg, &error) || error)) { 165 if (error == 0) { 166 /* dm_isoverlapping returned -1 */ 167 vdev_error(gettext("%s overlaps with %s\n"), path, msg); 168 free(msg); 169 return (-1); 170 } else if (error != ENODEV) { 171 /* libdiskmgt's devcache only handles physical drives */ 172 libdiskmgt_error(error); 173 return (0); 174 } 175 } 176 177 return (0); 178} 179 180 181/* 182 * Validate a whole disk. Iterate over all slices on the disk and make sure 183 * that none is in use by calling check_slice(). 184 */ 185static int 186check_disk(const char *name, dm_descriptor_t disk, int force, int isspare) 187{ 188 dm_descriptor_t *drive, *media, *slice; 189 int err = 0; 190 int i; 191 int ret; 192 193 /* 194 * Get the drive associated with this disk. This should never fail, 195 * because we already have an alias handle open for the device. 196 */ 197 if ((drive = dm_get_associated_descriptors(disk, DM_DRIVE, 198 &err)) == NULL || *drive == NULL) { 199 if (err) 200 libdiskmgt_error(err); 201 return (0); 202 } 203 204 if ((media = dm_get_associated_descriptors(*drive, DM_MEDIA, 205 &err)) == NULL) { 206 dm_free_descriptors(drive); 207 if (err) 208 libdiskmgt_error(err); 209 return (0); 210 } 211 212 dm_free_descriptors(drive); 213 214 /* 215 * It is possible that the user has specified a removable media drive, 216 * and the media is not present. 217 */ 218 if (*media == NULL) { 219 dm_free_descriptors(media); 220 vdev_error(gettext("'%s' has no media in drive\n"), name); 221 return (-1); 222 } 223 224 if ((slice = dm_get_associated_descriptors(*media, DM_SLICE, 225 &err)) == NULL) { 226 dm_free_descriptors(media); 227 if (err) 228 libdiskmgt_error(err); 229 return (0); 230 } 231 232 dm_free_descriptors(media); 233 234 ret = 0; 235 236 /* 237 * Iterate over all slices and report any errors. We don't care about 238 * overlapping slices because we are using the whole disk. 239 */ 240 for (i = 0; slice[i] != NULL; i++) { 241 char *name = dm_get_name(slice[i], &err); 242 243 if (check_slice(name, force, B_TRUE, isspare) != 0) 244 ret = -1; 245 246 dm_free_name(name); 247 } 248 249 dm_free_descriptors(slice); 250 return (ret); 251} 252 253/* 254 * Validate a device. 255 */ 256static int 257check_device(const char *path, boolean_t force, boolean_t isspare) 258{ 259 dm_descriptor_t desc; 260 int err; 261 char *dev; 262 263 /* 264 * For whole disks, libdiskmgt does not include the leading dev path. 265 */ 266 dev = strrchr(path, '/'); 267 assert(dev != NULL); 268 dev++; 269 if ((desc = dm_get_descriptor_by_name(DM_ALIAS, dev, &err)) != NULL) { 270 err = check_disk(path, desc, force, isspare); 271 dm_free_descriptor(desc); 272 return (err); 273 } 274 275 return (check_slice(path, force, B_FALSE, isspare)); 276} 277#endif /* illumos */ 278 279/* 280 * Check that a file is valid. All we can do in this case is check that it's 281 * not in use by another pool, and not in use by swap. 282 */ 283static int 284check_file(const char *file, boolean_t force, boolean_t isspare) 285{ 286 char *name; 287 int fd; 288 int ret = 0; 289 int err; 290 pool_state_t state; 291 boolean_t inuse; 292 293#ifdef illumos 294 if (dm_inuse_swap(file, &err)) { 295 if (err) 296 libdiskmgt_error(err); 297 else 298 vdev_error(gettext("%s is currently used by swap. " 299 "Please see swap(1M).\n"), file); 300 return (-1); 301 } 302#endif 303 304 if ((fd = open(file, O_RDONLY)) < 0) 305 return (0); 306 307 if (zpool_in_use(g_zfs, fd, &state, &name, &inuse) == 0 && inuse) { 308 const char *desc; 309 310 switch (state) { 311 case POOL_STATE_ACTIVE: 312 desc = gettext("active"); 313 break; 314 315 case POOL_STATE_EXPORTED: 316 desc = gettext("exported"); 317 break; 318 319 case POOL_STATE_POTENTIALLY_ACTIVE: 320 desc = gettext("potentially active"); 321 break; 322 323 default: 324 desc = gettext("unknown"); 325 break; 326 } 327 328 /* 329 * Allow hot spares to be shared between pools. 330 */ 331 if (state == POOL_STATE_SPARE && isspare) 332 return (0); 333 334 if (state == POOL_STATE_ACTIVE || 335 state == POOL_STATE_SPARE || !force) { 336 switch (state) { 337 case POOL_STATE_SPARE: 338 vdev_error(gettext("%s is reserved as a hot " 339 "spare for pool %s\n"), file, name); 340 break; 341 default: 342 vdev_error(gettext("%s is part of %s pool " 343 "'%s'\n"), file, desc, name); 344 break; 345 } 346 ret = -1; 347 } 348 349 free(name); 350 } 351 352 (void) close(fd); 353 return (ret); 354} 355 356static int 357check_device(const char *name, boolean_t force, boolean_t isspare) 358{ 359 char path[MAXPATHLEN]; 360 361 if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) != 0) 362 snprintf(path, sizeof(path), "%s%s", _PATH_DEV, name); 363 else 364 strlcpy(path, name, sizeof(path)); 365 366 return (check_file(path, force, isspare)); 367} 368 369/* 370 * By "whole disk" we mean an entire physical disk (something we can 371 * label, toggle the write cache on, etc.) as opposed to the full 372 * capacity of a pseudo-device such as lofi or did. We act as if we 373 * are labeling the disk, which should be a pretty good test of whether 374 * it's a viable device or not. Returns B_TRUE if it is and B_FALSE if 375 * it isn't. 376 */ 377static boolean_t 378is_whole_disk(const char *arg) 379{ 380#ifdef illumos 381 struct dk_gpt *label; 382 int fd; 383 char path[MAXPATHLEN]; 384 385 (void) snprintf(path, sizeof (path), "%s%s%s", 386 RDISK_ROOT, strrchr(arg, '/'), BACKUP_SLICE); 387 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) 388 return (B_FALSE); 389 if (efi_alloc_and_init(fd, EFI_NUMPAR, &label) != 0) { 390 (void) close(fd); 391 return (B_FALSE); 392 } 393 efi_free(label); 394 (void) close(fd); 395 return (B_TRUE); 396#else 397 int fd; 398 399 fd = g_open(arg, 0); 400 if (fd >= 0) { 401 g_close(fd); 402 return (B_TRUE); 403 } 404 return (B_FALSE); 405#endif 406} 407 408/* 409 * Create a leaf vdev. Determine if this is a file or a device. If it's a 410 * device, fill in the device id to make a complete nvlist. Valid forms for a 411 * leaf vdev are: 412 * 413 * /dev/dsk/xxx Complete disk path 414 * /xxx Full path to file 415 * xxx Shorthand for /dev/dsk/xxx 416 */ 417static nvlist_t * 418make_leaf_vdev(const char *arg, uint64_t is_log) 419{ 420 char path[MAXPATHLEN]; 421 struct stat64 statbuf; 422 nvlist_t *vdev = NULL; 423 char *type = NULL; 424 boolean_t wholedisk = B_FALSE; 425 426 /* 427 * Determine what type of vdev this is, and put the full path into 428 * 'path'. We detect whether this is a device of file afterwards by 429 * checking the st_mode of the file. 430 */ 431 if (arg[0] == '/') { 432 /* 433 * Complete device or file path. Exact type is determined by 434 * examining the file descriptor afterwards. 435 */ 436 wholedisk = is_whole_disk(arg); 437 if (!wholedisk && (stat64(arg, &statbuf) != 0)) { 438 (void) fprintf(stderr, 439 gettext("cannot open '%s': %s\n"), 440 arg, strerror(errno)); 441 return (NULL); 442 } 443 444 (void) strlcpy(path, arg, sizeof (path)); 445 } else { 446 /* 447 * This may be a short path for a device, or it could be total 448 * gibberish. Check to see if it's a known device in 449 * /dev/dsk/. As part of this check, see if we've been given a 450 * an entire disk (minus the slice number). 451 */ 452 if (strncmp(arg, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 453 strlcpy(path, arg, sizeof (path)); 454 else 455 snprintf(path, sizeof (path), "%s%s", _PATH_DEV, arg); 456 wholedisk = is_whole_disk(path); 457 if (!wholedisk && (stat64(path, &statbuf) != 0)) { 458 /* 459 * If we got ENOENT, then the user gave us 460 * gibberish, so try to direct them with a 461 * reasonable error message. Otherwise, 462 * regurgitate strerror() since it's the best we 463 * can do. 464 */ 465 if (errno == ENOENT) { 466 (void) fprintf(stderr, 467 gettext("cannot open '%s': no such " 468 "GEOM provider\n"), arg); 469 (void) fprintf(stderr, 470 gettext("must be a full path or " 471 "shorthand device name\n")); 472 return (NULL); 473 } else { 474 (void) fprintf(stderr, 475 gettext("cannot open '%s': %s\n"), 476 path, strerror(errno)); 477 return (NULL); 478 } 479 } 480 } 481 482#ifdef __FreeBSD__ 483 if (S_ISCHR(statbuf.st_mode)) { 484 statbuf.st_mode &= ~S_IFCHR; 485 statbuf.st_mode |= S_IFBLK; 486 wholedisk = B_FALSE; 487 } 488#endif 489 490 /* 491 * Determine whether this is a device or a file. 492 */ 493 if (wholedisk || S_ISBLK(statbuf.st_mode)) { 494 type = VDEV_TYPE_DISK; 495 } else if (S_ISREG(statbuf.st_mode)) { 496 type = VDEV_TYPE_FILE; 497 } else { 498 (void) fprintf(stderr, gettext("cannot use '%s': must be a " 499 "GEOM provider or regular file\n"), path); 500 return (NULL); 501 } 502 503 /* 504 * Finally, we have the complete device or file, and we know that it is 505 * acceptable to use. Construct the nvlist to describe this vdev. All 506 * vdevs have a 'path' element, and devices also have a 'devid' element. 507 */ 508 verify(nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) == 0); 509 verify(nvlist_add_string(vdev, ZPOOL_CONFIG_PATH, path) == 0); 510 verify(nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, type) == 0); 511 verify(nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_LOG, is_log) == 0); 512 if (strcmp(type, VDEV_TYPE_DISK) == 0) 513 verify(nvlist_add_uint64(vdev, ZPOOL_CONFIG_WHOLE_DISK, 514 (uint64_t)wholedisk) == 0); 515 516#ifdef have_devid 517 /* 518 * For a whole disk, defer getting its devid until after labeling it. 519 */ 520 if (S_ISBLK(statbuf.st_mode) && !wholedisk) { 521 /* 522 * Get the devid for the device. 523 */ 524 int fd; 525 ddi_devid_t devid; 526 char *minor = NULL, *devid_str = NULL; 527 528 if ((fd = open(path, O_RDONLY)) < 0) { 529 (void) fprintf(stderr, gettext("cannot open '%s': " 530 "%s\n"), path, strerror(errno)); 531 nvlist_free(vdev); 532 return (NULL); 533 } 534 535 if (devid_get(fd, &devid) == 0) { 536 if (devid_get_minor_name(fd, &minor) == 0 && 537 (devid_str = devid_str_encode(devid, minor)) != 538 NULL) { 539 verify(nvlist_add_string(vdev, 540 ZPOOL_CONFIG_DEVID, devid_str) == 0); 541 } 542 if (devid_str != NULL) 543 devid_str_free(devid_str); 544 if (minor != NULL) 545 devid_str_free(minor); 546 devid_free(devid); 547 } 548 549 (void) close(fd); 550 } 551#endif 552 553 return (vdev); 554} 555 556/* 557 * Go through and verify the replication level of the pool is consistent. 558 * Performs the following checks: 559 * 560 * For the new spec, verifies that devices in mirrors and raidz are the 561 * same size. 562 * 563 * If the current configuration already has inconsistent replication 564 * levels, ignore any other potential problems in the new spec. 565 * 566 * Otherwise, make sure that the current spec (if there is one) and the new 567 * spec have consistent replication levels. 568 */ 569typedef struct replication_level { 570 char *zprl_type; 571 uint64_t zprl_children; 572 uint64_t zprl_parity; 573} replication_level_t; 574 575#define ZPOOL_FUZZ (16 * 1024 * 1024) 576 577/* 578 * Given a list of toplevel vdevs, return the current replication level. If 579 * the config is inconsistent, then NULL is returned. If 'fatal' is set, then 580 * an error message will be displayed for each self-inconsistent vdev. 581 */ 582static replication_level_t * 583get_replication(nvlist_t *nvroot, boolean_t fatal) 584{ 585 nvlist_t **top; 586 uint_t t, toplevels; 587 nvlist_t **child; 588 uint_t c, children; 589 nvlist_t *nv; 590 char *type; 591 replication_level_t lastrep, rep, *ret; 592 boolean_t dontreport; 593 594 ret = safe_malloc(sizeof (replication_level_t)); 595 596 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 597 &top, &toplevels) == 0); 598 599 lastrep.zprl_type = NULL; 600 for (t = 0; t < toplevels; t++) { 601 uint64_t is_log = B_FALSE; 602 603 nv = top[t]; 604 605 /* 606 * For separate logs we ignore the top level vdev replication 607 * constraints. 608 */ 609 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); 610 if (is_log) 611 continue; 612 613 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, 614 &type) == 0); 615 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 616 &child, &children) != 0) { 617 /* 618 * This is a 'file' or 'disk' vdev. 619 */ 620 rep.zprl_type = type; 621 rep.zprl_children = 1; 622 rep.zprl_parity = 0; 623 } else { 624 uint64_t vdev_size; 625 626 /* 627 * This is a mirror or RAID-Z vdev. Go through and make 628 * sure the contents are all the same (files vs. disks), 629 * keeping track of the number of elements in the 630 * process. 631 * 632 * We also check that the size of each vdev (if it can 633 * be determined) is the same. 634 */ 635 rep.zprl_type = type; 636 rep.zprl_children = 0; 637 638 if (strcmp(type, VDEV_TYPE_RAIDZ) == 0) { 639 verify(nvlist_lookup_uint64(nv, 640 ZPOOL_CONFIG_NPARITY, 641 &rep.zprl_parity) == 0); 642 assert(rep.zprl_parity != 0); 643 } else { 644 rep.zprl_parity = 0; 645 } 646 647 /* 648 * The 'dontreport' variable indicates that we've 649 * already reported an error for this spec, so don't 650 * bother doing it again. 651 */ 652 type = NULL; 653 dontreport = 0; 654 vdev_size = -1ULL; 655 for (c = 0; c < children; c++) { 656 nvlist_t *cnv = child[c]; 657 char *path; 658 struct stat64 statbuf; 659 uint64_t size = -1ULL; 660 char *childtype; 661 int fd, err; 662 663 rep.zprl_children++; 664 665 verify(nvlist_lookup_string(cnv, 666 ZPOOL_CONFIG_TYPE, &childtype) == 0); 667 668 /* 669 * If this is a replacing or spare vdev, then 670 * get the real first child of the vdev. 671 */ 672 if (strcmp(childtype, 673 VDEV_TYPE_REPLACING) == 0 || 674 strcmp(childtype, VDEV_TYPE_SPARE) == 0) { 675 nvlist_t **rchild; 676 uint_t rchildren; 677 678 verify(nvlist_lookup_nvlist_array(cnv, 679 ZPOOL_CONFIG_CHILDREN, &rchild, 680 &rchildren) == 0); 681 assert(rchildren == 2); 682 cnv = rchild[0]; 683 684 verify(nvlist_lookup_string(cnv, 685 ZPOOL_CONFIG_TYPE, 686 &childtype) == 0); 687 } 688 689 verify(nvlist_lookup_string(cnv, 690 ZPOOL_CONFIG_PATH, &path) == 0); 691 692 /* 693 * If we have a raidz/mirror that combines disks 694 * with files, report it as an error. 695 */ 696 if (!dontreport && type != NULL && 697 strcmp(type, childtype) != 0) { 698 if (ret != NULL) 699 free(ret); 700 ret = NULL; 701 if (fatal) 702 vdev_error(gettext( 703 "mismatched replication " 704 "level: %s contains both " 705 "files and devices\n"), 706 rep.zprl_type); 707 else 708 return (NULL); 709 dontreport = B_TRUE; 710 } 711 712 /* 713 * According to stat(2), the value of 'st_size' 714 * is undefined for block devices and character 715 * devices. But there is no effective way to 716 * determine the real size in userland. 717 * 718 * Instead, we'll take advantage of an 719 * implementation detail of spec_size(). If the 720 * device is currently open, then we (should) 721 * return a valid size. 722 * 723 * If we still don't get a valid size (indicated 724 * by a size of 0 or MAXOFFSET_T), then ignore 725 * this device altogether. 726 */ 727 if ((fd = open(path, O_RDONLY)) >= 0) { 728 err = fstat64(fd, &statbuf); 729 (void) close(fd); 730 } else { 731 err = stat64(path, &statbuf); 732 } 733 734 if (err != 0 || 735 statbuf.st_size == 0 || 736 statbuf.st_size == MAXOFFSET_T) 737 continue; 738 739 size = statbuf.st_size; 740 741 /* 742 * Also make sure that devices and 743 * slices have a consistent size. If 744 * they differ by a significant amount 745 * (~16MB) then report an error. 746 */ 747 if (!dontreport && 748 (vdev_size != -1ULL && 749 (labs(size - vdev_size) > 750 ZPOOL_FUZZ))) { 751 if (ret != NULL) 752 free(ret); 753 ret = NULL; 754 if (fatal) 755 vdev_error(gettext( 756 "%s contains devices of " 757 "different sizes\n"), 758 rep.zprl_type); 759 else 760 return (NULL); 761 dontreport = B_TRUE; 762 } 763 764 type = childtype; 765 vdev_size = size; 766 } 767 } 768 769 /* 770 * At this point, we have the replication of the last toplevel 771 * vdev in 'rep'. Compare it to 'lastrep' to see if its 772 * different. 773 */ 774 if (lastrep.zprl_type != NULL) { 775 if (strcmp(lastrep.zprl_type, rep.zprl_type) != 0) { 776 if (ret != NULL) 777 free(ret); 778 ret = NULL; 779 if (fatal) 780 vdev_error(gettext( 781 "mismatched replication level: " 782 "both %s and %s vdevs are " 783 "present\n"), 784 lastrep.zprl_type, rep.zprl_type); 785 else 786 return (NULL); 787 } else if (lastrep.zprl_parity != rep.zprl_parity) { 788 if (ret) 789 free(ret); 790 ret = NULL; 791 if (fatal) 792 vdev_error(gettext( 793 "mismatched replication level: " 794 "both %llu and %llu device parity " 795 "%s vdevs are present\n"), 796 lastrep.zprl_parity, 797 rep.zprl_parity, 798 rep.zprl_type); 799 else 800 return (NULL); 801 } else if (lastrep.zprl_children != rep.zprl_children) { 802 if (ret) 803 free(ret); 804 ret = NULL; 805 if (fatal) 806 vdev_error(gettext( 807 "mismatched replication level: " 808 "both %llu-way and %llu-way %s " 809 "vdevs are present\n"), 810 lastrep.zprl_children, 811 rep.zprl_children, 812 rep.zprl_type); 813 else 814 return (NULL); 815 } 816 } 817 lastrep = rep; 818 } 819 820 if (ret != NULL) 821 *ret = rep; 822 823 return (ret); 824} 825 826/* 827 * Check the replication level of the vdev spec against the current pool. Calls 828 * get_replication() to make sure the new spec is self-consistent. If the pool 829 * has a consistent replication level, then we ignore any errors. Otherwise, 830 * report any difference between the two. 831 */ 832static int 833check_replication(nvlist_t *config, nvlist_t *newroot) 834{ 835 nvlist_t **child; 836 uint_t children; 837 replication_level_t *current = NULL, *new; 838 int ret; 839 840 /* 841 * If we have a current pool configuration, check to see if it's 842 * self-consistent. If not, simply return success. 843 */ 844 if (config != NULL) { 845 nvlist_t *nvroot; 846 847 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 848 &nvroot) == 0); 849 if ((current = get_replication(nvroot, B_FALSE)) == NULL) 850 return (0); 851 } 852 /* 853 * for spares there may be no children, and therefore no 854 * replication level to check 855 */ 856 if ((nvlist_lookup_nvlist_array(newroot, ZPOOL_CONFIG_CHILDREN, 857 &child, &children) != 0) || (children == 0)) { 858 free(current); 859 return (0); 860 } 861 862 /* 863 * If all we have is logs then there's no replication level to check. 864 */ 865 if (num_logs(newroot) == children) { 866 free(current); 867 return (0); 868 } 869 870 /* 871 * Get the replication level of the new vdev spec, reporting any 872 * inconsistencies found. 873 */ 874 if ((new = get_replication(newroot, B_TRUE)) == NULL) { 875 free(current); 876 return (-1); 877 } 878 879 /* 880 * Check to see if the new vdev spec matches the replication level of 881 * the current pool. 882 */ 883 ret = 0; 884 if (current != NULL) { 885 if (strcmp(current->zprl_type, new->zprl_type) != 0) { 886 vdev_error(gettext( 887 "mismatched replication level: pool uses %s " 888 "and new vdev is %s\n"), 889 current->zprl_type, new->zprl_type); 890 ret = -1; 891 } else if (current->zprl_parity != new->zprl_parity) { 892 vdev_error(gettext( 893 "mismatched replication level: pool uses %llu " 894 "device parity and new vdev uses %llu\n"), 895 current->zprl_parity, new->zprl_parity); 896 ret = -1; 897 } else if (current->zprl_children != new->zprl_children) { 898 vdev_error(gettext( 899 "mismatched replication level: pool uses %llu-way " 900 "%s and new vdev uses %llu-way %s\n"), 901 current->zprl_children, current->zprl_type, 902 new->zprl_children, new->zprl_type); 903 ret = -1; 904 } 905 } 906 907 free(new); 908 if (current != NULL) 909 free(current); 910 911 return (ret); 912} 913 914#ifdef illumos 915/* 916 * Go through and find any whole disks in the vdev specification, labelling them 917 * as appropriate. When constructing the vdev spec, we were unable to open this 918 * device in order to provide a devid. Now that we have labelled the disk and 919 * know that slice 0 is valid, we can construct the devid now. 920 * 921 * If the disk was already labeled with an EFI label, we will have gotten the 922 * devid already (because we were able to open the whole disk). Otherwise, we 923 * need to get the devid after we label the disk. 924 */ 925static int 926make_disks(zpool_handle_t *zhp, nvlist_t *nv) 927{ 928 nvlist_t **child; 929 uint_t c, children; 930 char *type, *path, *diskname; 931 char buf[MAXPATHLEN]; 932 uint64_t wholedisk; 933 int fd; 934 int ret; 935 ddi_devid_t devid; 936 char *minor = NULL, *devid_str = NULL; 937 938 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0); 939 940 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 941 &child, &children) != 0) { 942 943 if (strcmp(type, VDEV_TYPE_DISK) != 0) 944 return (0); 945 946 /* 947 * We have a disk device. Get the path to the device 948 * and see if it's a whole disk by appending the backup 949 * slice and stat()ing the device. 950 */ 951 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0); 952 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 953 &wholedisk) != 0 || !wholedisk) 954 return (0); 955 956 diskname = strrchr(path, '/'); 957 assert(diskname != NULL); 958 diskname++; 959 if (zpool_label_disk(g_zfs, zhp, diskname) == -1) 960 return (-1); 961 962 /* 963 * Fill in the devid, now that we've labeled the disk. 964 */ 965 (void) snprintf(buf, sizeof (buf), "%ss0", path); 966 if ((fd = open(buf, O_RDONLY)) < 0) { 967 (void) fprintf(stderr, 968 gettext("cannot open '%s': %s\n"), 969 buf, strerror(errno)); 970 return (-1); 971 } 972 973 if (devid_get(fd, &devid) == 0) { 974 if (devid_get_minor_name(fd, &minor) == 0 && 975 (devid_str = devid_str_encode(devid, minor)) != 976 NULL) { 977 verify(nvlist_add_string(nv, 978 ZPOOL_CONFIG_DEVID, devid_str) == 0); 979 } 980 if (devid_str != NULL) 981 devid_str_free(devid_str); 982 if (minor != NULL) 983 devid_str_free(minor); 984 devid_free(devid); 985 } 986 987 /* 988 * Update the path to refer to the 's0' slice. The presence of 989 * the 'whole_disk' field indicates to the CLI that we should 990 * chop off the slice number when displaying the device in 991 * future output. 992 */ 993 verify(nvlist_add_string(nv, ZPOOL_CONFIG_PATH, buf) == 0); 994 995 (void) close(fd); 996 997 return (0); 998 } 999 1000 for (c = 0; c < children; c++) 1001 if ((ret = make_disks(zhp, child[c])) != 0) 1002 return (ret); 1003 1004 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, 1005 &child, &children) == 0) 1006 for (c = 0; c < children; c++) 1007 if ((ret = make_disks(zhp, child[c])) != 0) 1008 return (ret); 1009 1010 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, 1011 &child, &children) == 0) 1012 for (c = 0; c < children; c++) 1013 if ((ret = make_disks(zhp, child[c])) != 0) 1014 return (ret); 1015 1016 return (0); 1017} 1018#endif /* illumos */ 1019 1020/* 1021 * Determine if the given path is a hot spare within the given configuration. 1022 */ 1023static boolean_t 1024is_spare(nvlist_t *config, const char *path) 1025{ 1026 int fd; 1027 pool_state_t state; 1028 char *name = NULL; 1029 nvlist_t *label; 1030 uint64_t guid, spareguid; 1031 nvlist_t *nvroot; 1032 nvlist_t **spares; 1033 uint_t i, nspares; 1034 boolean_t inuse; 1035 1036 if ((fd = open(path, O_RDONLY)) < 0) 1037 return (B_FALSE); 1038 1039 if (zpool_in_use(g_zfs, fd, &state, &name, &inuse) != 0 || 1040 !inuse || 1041 state != POOL_STATE_SPARE || 1042 zpool_read_label(fd, &label) != 0) { 1043 free(name); 1044 (void) close(fd); 1045 return (B_FALSE); 1046 } 1047 free(name); 1048 (void) close(fd); 1049 1050 verify(nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) == 0); 1051 nvlist_free(label); 1052 1053 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, 1054 &nvroot) == 0); 1055 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 1056 &spares, &nspares) == 0) { 1057 for (i = 0; i < nspares; i++) { 1058 verify(nvlist_lookup_uint64(spares[i], 1059 ZPOOL_CONFIG_GUID, &spareguid) == 0); 1060 if (spareguid == guid) 1061 return (B_TRUE); 1062 } 1063 } 1064 1065 return (B_FALSE); 1066} 1067 1068/* 1069 * Go through and find any devices that are in use. We rely on libdiskmgt for 1070 * the majority of this task. 1071 */ 1072static boolean_t 1073is_device_in_use(nvlist_t *config, nvlist_t *nv, boolean_t force, 1074 boolean_t replacing, boolean_t isspare) 1075{ 1076 nvlist_t **child; 1077 uint_t c, children; 1078 char *type, *path; 1079 int ret; 1080 char buf[MAXPATHLEN]; 1081 uint64_t wholedisk; 1082 boolean_t anyinuse = B_FALSE; 1083 1084 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0); 1085 1086 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, 1087 &child, &children) != 0) { 1088 1089 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0); 1090 1091 /* 1092 * As a generic check, we look to see if this is a replace of a 1093 * hot spare within the same pool. If so, we allow it 1094 * regardless of what libdiskmgt or zpool_in_use() says. 1095 */ 1096 if (replacing) { 1097#ifdef illumos 1098 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 1099 &wholedisk) == 0 && wholedisk) 1100 (void) snprintf(buf, sizeof (buf), "%ss0", 1101 path); 1102 else 1103#endif 1104 (void) strlcpy(buf, path, sizeof (buf)); 1105 1106 if (is_spare(config, buf)) 1107 return (B_FALSE); 1108 } 1109 1110 if (strcmp(type, VDEV_TYPE_DISK) == 0) 1111 ret = check_device(path, force, isspare); 1112 else if (strcmp(type, VDEV_TYPE_FILE) == 0) 1113 ret = check_file(path, force, isspare); 1114 1115 return (ret != 0); 1116 } 1117 1118 for (c = 0; c < children; c++) 1119 if (is_device_in_use(config, child[c], force, replacing, 1120 B_FALSE)) 1121 anyinuse = B_TRUE; 1122 1123 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, 1124 &child, &children) == 0) 1125 for (c = 0; c < children; c++) 1126 if (is_device_in_use(config, child[c], force, replacing, 1127 B_TRUE)) 1128 anyinuse = B_TRUE; 1129 1130 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, 1131 &child, &children) == 0) 1132 for (c = 0; c < children; c++) 1133 if (is_device_in_use(config, child[c], force, replacing, 1134 B_FALSE)) 1135 anyinuse = B_TRUE; 1136 1137 return (anyinuse); 1138} 1139 1140static const char * 1141is_grouping(const char *type, int *mindev, int *maxdev) 1142{ 1143 if (strncmp(type, "raidz", 5) == 0) { 1144 const char *p = type + 5; 1145 char *end; 1146 long nparity; 1147 1148 if (*p == '\0') { 1149 nparity = 1; 1150 } else if (*p == '0') { 1151 return (NULL); /* no zero prefixes allowed */ 1152 } else { 1153 errno = 0; 1154 nparity = strtol(p, &end, 10); 1155 if (errno != 0 || nparity < 1 || nparity >= 255 || 1156 *end != '\0') 1157 return (NULL); 1158 } 1159 1160 if (mindev != NULL) 1161 *mindev = nparity + 1; 1162 if (maxdev != NULL) 1163 *maxdev = 255; 1164 return (VDEV_TYPE_RAIDZ); 1165 } 1166 1167 if (maxdev != NULL) 1168 *maxdev = INT_MAX; 1169 1170 if (strcmp(type, "mirror") == 0) { 1171 if (mindev != NULL) 1172 *mindev = 2; 1173 return (VDEV_TYPE_MIRROR); 1174 } 1175 1176 if (strcmp(type, "spare") == 0) { 1177 if (mindev != NULL) 1178 *mindev = 1; 1179 return (VDEV_TYPE_SPARE); 1180 } 1181 1182 if (strcmp(type, "log") == 0) { 1183 if (mindev != NULL) 1184 *mindev = 1; 1185 return (VDEV_TYPE_LOG); 1186 } 1187 1188 if (strcmp(type, "cache") == 0) { 1189 if (mindev != NULL) 1190 *mindev = 1; 1191 return (VDEV_TYPE_L2CACHE); 1192 } 1193 1194 return (NULL); 1195} 1196 1197/* 1198 * Construct a syntactically valid vdev specification, 1199 * and ensure that all devices and files exist and can be opened. 1200 * Note: we don't bother freeing anything in the error paths 1201 * because the program is just going to exit anyway. 1202 */ 1203nvlist_t * 1204construct_spec(int argc, char **argv) 1205{ 1206 nvlist_t *nvroot, *nv, **top, **spares, **l2cache; 1207 int t, toplevels, mindev, maxdev, nspares, nlogs, nl2cache; 1208 const char *type; 1209 uint64_t is_log; 1210 boolean_t seen_logs; 1211 1212 top = NULL; 1213 toplevels = 0; 1214 spares = NULL; 1215 l2cache = NULL; 1216 nspares = 0; 1217 nlogs = 0; 1218 nl2cache = 0; 1219 is_log = B_FALSE; 1220 seen_logs = B_FALSE; 1221 1222 while (argc > 0) { 1223 nv = NULL; 1224 1225 /* 1226 * If it's a mirror or raidz, the subsequent arguments are 1227 * its leaves -- until we encounter the next mirror or raidz. 1228 */ 1229 if ((type = is_grouping(argv[0], &mindev, &maxdev)) != NULL) { 1230 nvlist_t **child = NULL; 1231 int c, children = 0; 1232 1233 if (strcmp(type, VDEV_TYPE_SPARE) == 0) { 1234 if (spares != NULL) { 1235 (void) fprintf(stderr, 1236 gettext("invalid vdev " 1237 "specification: 'spare' can be " 1238 "specified only once\n")); 1239 return (NULL); 1240 } 1241 is_log = B_FALSE; 1242 } 1243 1244 if (strcmp(type, VDEV_TYPE_LOG) == 0) { 1245 if (seen_logs) { 1246 (void) fprintf(stderr, 1247 gettext("invalid vdev " 1248 "specification: 'log' can be " 1249 "specified only once\n")); 1250 return (NULL); 1251 } 1252 seen_logs = B_TRUE; 1253 is_log = B_TRUE; 1254 argc--; 1255 argv++; 1256 /* 1257 * A log is not a real grouping device. 1258 * We just set is_log and continue. 1259 */ 1260 continue; 1261 } 1262 1263 if (strcmp(type, VDEV_TYPE_L2CACHE) == 0) { 1264 if (l2cache != NULL) { 1265 (void) fprintf(stderr, 1266 gettext("invalid vdev " 1267 "specification: 'cache' can be " 1268 "specified only once\n")); 1269 return (NULL); 1270 } 1271 is_log = B_FALSE; 1272 } 1273 1274 if (is_log) { 1275 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) { 1276 (void) fprintf(stderr, 1277 gettext("invalid vdev " 1278 "specification: unsupported 'log' " 1279 "device: %s\n"), type); 1280 return (NULL); 1281 } 1282 nlogs++; 1283 } 1284 1285 for (c = 1; c < argc; c++) { 1286 if (is_grouping(argv[c], NULL, NULL) != NULL) 1287 break; 1288 children++; 1289 child = realloc(child, 1290 children * sizeof (nvlist_t *)); 1291 if (child == NULL) 1292 zpool_no_memory(); 1293 if ((nv = make_leaf_vdev(argv[c], B_FALSE)) 1294 == NULL) 1295 return (NULL); 1296 child[children - 1] = nv; 1297 } 1298 1299 if (children < mindev) { 1300 (void) fprintf(stderr, gettext("invalid vdev " 1301 "specification: %s requires at least %d " 1302 "devices\n"), argv[0], mindev); 1303 return (NULL); 1304 } 1305 1306 if (children > maxdev) { 1307 (void) fprintf(stderr, gettext("invalid vdev " 1308 "specification: %s supports no more than " 1309 "%d devices\n"), argv[0], maxdev); 1310 return (NULL); 1311 } 1312 1313 argc -= c; 1314 argv += c; 1315 1316 if (strcmp(type, VDEV_TYPE_SPARE) == 0) { 1317 spares = child; 1318 nspares = children; 1319 continue; 1320 } else if (strcmp(type, VDEV_TYPE_L2CACHE) == 0) { 1321 l2cache = child; 1322 nl2cache = children; 1323 continue; 1324 } else { 1325 verify(nvlist_alloc(&nv, NV_UNIQUE_NAME, 1326 0) == 0); 1327 verify(nvlist_add_string(nv, ZPOOL_CONFIG_TYPE, 1328 type) == 0); 1329 verify(nvlist_add_uint64(nv, 1330 ZPOOL_CONFIG_IS_LOG, is_log) == 0); 1331 if (strcmp(type, VDEV_TYPE_RAIDZ) == 0) { 1332 verify(nvlist_add_uint64(nv, 1333 ZPOOL_CONFIG_NPARITY, 1334 mindev - 1) == 0); 1335 } 1336 verify(nvlist_add_nvlist_array(nv, 1337 ZPOOL_CONFIG_CHILDREN, child, 1338 children) == 0); 1339 1340 for (c = 0; c < children; c++) 1341 nvlist_free(child[c]); 1342 free(child); 1343 } 1344 } else { 1345 /* 1346 * We have a device. Pass off to make_leaf_vdev() to 1347 * construct the appropriate nvlist describing the vdev. 1348 */ 1349 if ((nv = make_leaf_vdev(argv[0], is_log)) == NULL) 1350 return (NULL); 1351 if (is_log) 1352 nlogs++; 1353 argc--; 1354 argv++; 1355 } 1356 1357 toplevels++; 1358 top = realloc(top, toplevels * sizeof (nvlist_t *)); 1359 if (top == NULL) 1360 zpool_no_memory(); 1361 top[toplevels - 1] = nv; 1362 } 1363 1364 if (toplevels == 0 && nspares == 0 && nl2cache == 0) { 1365 (void) fprintf(stderr, gettext("invalid vdev " 1366 "specification: at least one toplevel vdev must be " 1367 "specified\n")); 1368 return (NULL); 1369 } 1370 1371 if (seen_logs && nlogs == 0) { 1372 (void) fprintf(stderr, gettext("invalid vdev specification: " 1373 "log requires at least 1 device\n")); 1374 return (NULL); 1375 } 1376 1377 /* 1378 * Finally, create nvroot and add all top-level vdevs to it. 1379 */ 1380 verify(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, 0) == 0); 1381 verify(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, 1382 VDEV_TYPE_ROOT) == 0); 1383 verify(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, 1384 top, toplevels) == 0); 1385 if (nspares != 0) 1386 verify(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, 1387 spares, nspares) == 0); 1388 if (nl2cache != 0) 1389 verify(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, 1390 l2cache, nl2cache) == 0); 1391 1392 for (t = 0; t < toplevels; t++) 1393 nvlist_free(top[t]); 1394 for (t = 0; t < nspares; t++) 1395 nvlist_free(spares[t]); 1396 for (t = 0; t < nl2cache; t++) 1397 nvlist_free(l2cache[t]); 1398 if (spares) 1399 free(spares); 1400 if (l2cache) 1401 free(l2cache); 1402 free(top); 1403 1404 return (nvroot); 1405} 1406 1407nvlist_t * 1408split_mirror_vdev(zpool_handle_t *zhp, char *newname, nvlist_t *props, 1409 splitflags_t flags, int argc, char **argv) 1410{ 1411 nvlist_t *newroot = NULL, **child; 1412 uint_t c, children; 1413 1414 if (argc > 0) { 1415 if ((newroot = construct_spec(argc, argv)) == NULL) { 1416 (void) fprintf(stderr, gettext("Unable to build a " 1417 "pool from the specified devices\n")); 1418 return (NULL); 1419 } 1420 1421#ifdef illumos 1422 if (!flags.dryrun && make_disks(zhp, newroot) != 0) { 1423 nvlist_free(newroot); 1424 return (NULL); 1425 } 1426#endif 1427 1428 /* avoid any tricks in the spec */ 1429 verify(nvlist_lookup_nvlist_array(newroot, 1430 ZPOOL_CONFIG_CHILDREN, &child, &children) == 0); 1431 for (c = 0; c < children; c++) { 1432 char *path; 1433 const char *type; 1434 int min, max; 1435 1436 verify(nvlist_lookup_string(child[c], 1437 ZPOOL_CONFIG_PATH, &path) == 0); 1438 if ((type = is_grouping(path, &min, &max)) != NULL) { 1439 (void) fprintf(stderr, gettext("Cannot use " 1440 "'%s' as a device for splitting\n"), type); 1441 nvlist_free(newroot); 1442 return (NULL); 1443 } 1444 } 1445 } 1446 1447 if (zpool_vdev_split(zhp, newname, &newroot, props, flags) != 0) { 1448 if (newroot != NULL) 1449 nvlist_free(newroot); 1450 return (NULL); 1451 } 1452 1453 return (newroot); 1454} 1455 1456/* 1457 * Get and validate the contents of the given vdev specification. This ensures 1458 * that the nvlist returned is well-formed, that all the devices exist, and that 1459 * they are not currently in use by any other known consumer. The 'poolconfig' 1460 * parameter is the current configuration of the pool when adding devices 1461 * existing pool, and is used to perform additional checks, such as changing the 1462 * replication level of the pool. It can be 'NULL' to indicate that this is a 1463 * new pool. The 'force' flag controls whether devices should be forcefully 1464 * added, even if they appear in use. 1465 */ 1466nvlist_t * 1467make_root_vdev(zpool_handle_t *zhp, int force, int check_rep, 1468 boolean_t replacing, boolean_t dryrun, int argc, char **argv) 1469{ 1470 nvlist_t *newroot; 1471 nvlist_t *poolconfig = NULL; 1472 is_force = force; 1473 1474 /* 1475 * Construct the vdev specification. If this is successful, we know 1476 * that we have a valid specification, and that all devices can be 1477 * opened. 1478 */ 1479 if ((newroot = construct_spec(argc, argv)) == NULL) 1480 return (NULL); 1481 1482 if (zhp && ((poolconfig = zpool_get_config(zhp, NULL)) == NULL)) 1483 return (NULL); 1484 1485 /* 1486 * Validate each device to make sure that its not shared with another 1487 * subsystem. We do this even if 'force' is set, because there are some 1488 * uses (such as a dedicated dump device) that even '-f' cannot 1489 * override. 1490 */ 1491 if (is_device_in_use(poolconfig, newroot, force, replacing, B_FALSE)) { 1492 nvlist_free(newroot); 1493 return (NULL); 1494 } 1495 1496 /* 1497 * Check the replication level of the given vdevs and report any errors 1498 * found. We include the existing pool spec, if any, as we need to 1499 * catch changes against the existing replication level. 1500 */ 1501 if (check_rep && check_replication(poolconfig, newroot) != 0) { 1502 nvlist_free(newroot); 1503 return (NULL); 1504 } 1505 1506#ifdef illumos 1507 /* 1508 * Run through the vdev specification and label any whole disks found. 1509 */ 1510 if (!dryrun && make_disks(zhp, newroot) != 0) { 1511 nvlist_free(newroot); 1512 return (NULL); 1513 } 1514#endif 1515 1516 return (newroot); 1517} 1518