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Set zvol discard_granularity to the volblocksize.
[mirror_zfs.git] / lib / libzfs / libzfs_pool.c
CommitLineData
34dc7c2f
BB		 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/*
428870ff 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
3541dc6d
GA		 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2011 by Delphix. All rights reserved.
34dc7c2f
BB		 26 */
27
34dc7c2f
BB		 28#include <ctype.h>
29#include <errno.h>
30#include <devid.h>
34dc7c2f
BB		 31#include <fcntl.h>
32#include <libintl.h>
33#include <stdio.h>
34#include <stdlib.h>
35#include <strings.h>
36#include <unistd.h>
d603ed6c
BB		 37#include <zone.h>
38#include <sys/stat.h>
34dc7c2f
BB		 39#include <sys/efi_partition.h>
40#include <sys/vtoc.h>
41#include <sys/zfs_ioctl.h>
9babb374 42#include <dlfcn.h>
34dc7c2f
BB		 43
44#include "zfs_namecheck.h"
45#include "zfs_prop.h"
46#include "libzfs_impl.h"
428870ff 47#include "zfs_comutil.h"
34dc7c2f 48
b128c09f
BB		 49static int read_efi_label(nvlist_t *config, diskaddr_t *sb);
50
572e2857
BB		 51typedef struct prop_flags {
52 int create:1; /* Validate property on creation */
53 int import:1; /* Validate property on import */
54} prop_flags_t;
55
34dc7c2f
BB		 56/*
57 * ====================================================================
58 * zpool property functions
59 * ====================================================================
60 */
61
62static int
63zpool_get_all_props(zpool_handle_t *zhp)
64{
2598c001 65 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 66 libzfs_handle_t *hdl = zhp->zpool_hdl;
67
68 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
69
70 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
71 return (-1);
72
73 while (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) {
74 if (errno == ENOMEM) {
75 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
76 zcmd_free_nvlists(&zc);
77 return (-1);
78 }
79 } else {
80 zcmd_free_nvlists(&zc);
81 return (-1);
82 }
83 }
84
85 if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zpool_props) != 0) {
86 zcmd_free_nvlists(&zc);
87 return (-1);
88 }
89
90 zcmd_free_nvlists(&zc);
91
92 return (0);
93}
94
95static int
96zpool_props_refresh(zpool_handle_t *zhp)
97{
98 nvlist_t *old_props;
99
100 old_props = zhp->zpool_props;
101
102 if (zpool_get_all_props(zhp) != 0)
103 return (-1);
104
105 nvlist_free(old_props);
106 return (0);
107}
108
109static char *
110zpool_get_prop_string(zpool_handle_t *zhp, zpool_prop_t prop,
111 zprop_source_t *src)
112{
113 nvlist_t *nv, *nvl;
114 uint64_t ival;
115 char *value;
116 zprop_source_t source;
117
118 nvl = zhp->zpool_props;
119 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) {
120 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &ival) == 0);
121 source = ival;
122 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0);
123 } else {
124 source = ZPROP_SRC_DEFAULT;
125 if ((value = (char *)zpool_prop_default_string(prop)) == NULL)
126 value = "-";
127 }
128
129 if (src)
130 *src = source;
131
132 return (value);
133}
134
135uint64_t
136zpool_get_prop_int(zpool_handle_t *zhp, zpool_prop_t prop, zprop_source_t *src)
137{
138 nvlist_t *nv, *nvl;
139 uint64_t value;
140 zprop_source_t source;
141
b128c09f
BB		 142 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp)) {
143 /*
144 * zpool_get_all_props() has most likely failed because
145 * the pool is faulted, but if all we need is the top level
146 * vdev's guid then get it from the zhp config nvlist.
147 */
148 if ((prop == ZPOOL_PROP_GUID) &&
149 (nvlist_lookup_nvlist(zhp->zpool_config,
150 ZPOOL_CONFIG_VDEV_TREE, &nv) == 0) &&
151 (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value)
152 == 0)) {
153 return (value);
154 }
34dc7c2f 155 return (zpool_prop_default_numeric(prop));
b128c09f 156 }
34dc7c2f
BB		 157
158 nvl = zhp->zpool_props;
159 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) {
160 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &value) == 0);
161 source = value;
162 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0);
163 } else {
164 source = ZPROP_SRC_DEFAULT;
165 value = zpool_prop_default_numeric(prop);
166 }
167
168 if (src)
169 *src = source;
170
171 return (value);
172}
173
174/*
175 * Map VDEV STATE to printed strings.
176 */
177char *
178zpool_state_to_name(vdev_state_t state, vdev_aux_t aux)
179{
180 switch (state) {
e75c13c3
BB		 181 default:
182 break;
34dc7c2f
BB		 183 case VDEV_STATE_CLOSED:
184 case VDEV_STATE_OFFLINE:
185 return (gettext("OFFLINE"));
186 case VDEV_STATE_REMOVED:
187 return (gettext("REMOVED"));
188 case VDEV_STATE_CANT_OPEN:
b128c09f 189 if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG)
34dc7c2f 190 return (gettext("FAULTED"));
428870ff
BB		 191 else if (aux == VDEV_AUX_SPLIT_POOL)
192 return (gettext("SPLIT"));
34dc7c2f
BB		 193 else
194 return (gettext("UNAVAIL"));
195 case VDEV_STATE_FAULTED:
196 return (gettext("FAULTED"));
197 case VDEV_STATE_DEGRADED:
198 return (gettext("DEGRADED"));
199 case VDEV_STATE_HEALTHY:
200 return (gettext("ONLINE"));
201 }
202
203 return (gettext("UNKNOWN"));
204}
205
206/*
207 * Get a zpool property value for 'prop' and return the value in
208 * a pre-allocated buffer.
209 */
210int
211zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len,
212 zprop_source_t *srctype)
213{
214 uint64_t intval;
215 const char *strval;
216 zprop_source_t src = ZPROP_SRC_NONE;
217 nvlist_t *nvroot;
218 vdev_stat_t *vs;
219 uint_t vsc;
220
221 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) {
d164b209
BB		 222 switch (prop) {
223 case ZPOOL_PROP_NAME:
34dc7c2f 224 (void) strlcpy(buf, zpool_get_name(zhp), len);
d164b209
BB		 225 break;
226
227 case ZPOOL_PROP_HEALTH:
34dc7c2f 228 (void) strlcpy(buf, "FAULTED", len);
d164b209
BB		 229 break;
230
231 case ZPOOL_PROP_GUID:
232 intval = zpool_get_prop_int(zhp, prop, &src);
b8864a23 233 (void) snprintf(buf, len, "%llu", (u_longlong_t)intval);
d164b209
BB		 234 break;
235
236 case ZPOOL_PROP_ALTROOT:
237 case ZPOOL_PROP_CACHEFILE:
238 if (zhp->zpool_props != NULL ||
239 zpool_get_all_props(zhp) == 0) {
240 (void) strlcpy(buf,
241 zpool_get_prop_string(zhp, prop, &src),
242 len);
243 if (srctype != NULL)
244 *srctype = src;
245 return (0);
246 }
247 /* FALLTHROUGH */
248 default:
34dc7c2f 249 (void) strlcpy(buf, "-", len);
d164b209
BB		 250 break;
251 }
252
253 if (srctype != NULL)
254 *srctype = src;
34dc7c2f
BB		 255 return (0);
256 }
257
258 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) &&
259 prop != ZPOOL_PROP_NAME)
260 return (-1);
261
262 switch (zpool_prop_get_type(prop)) {
263 case PROP_TYPE_STRING:
264 (void) strlcpy(buf, zpool_get_prop_string(zhp, prop, &src),
265 len);
266 break;
267
268 case PROP_TYPE_NUMBER:
269 intval = zpool_get_prop_int(zhp, prop, &src);
270
271 switch (prop) {
272 case ZPOOL_PROP_SIZE:
428870ff
BB		 273 case ZPOOL_PROP_ALLOCATED:
274 case ZPOOL_PROP_FREE:
df30f566 275 case ZPOOL_PROP_ASHIFT:
34dc7c2f
BB		 276 (void) zfs_nicenum(intval, buf, len);
277 break;
278
279 case ZPOOL_PROP_CAPACITY:
280 (void) snprintf(buf, len, "%llu%%",
281 (u_longlong_t)intval);
282 break;
283
428870ff
BB		 284 case ZPOOL_PROP_DEDUPRATIO:
285 (void) snprintf(buf, len, "%llu.%02llux",
286 (u_longlong_t)(intval / 100),
287 (u_longlong_t)(intval % 100));
288 break;
289
34dc7c2f
BB		 290 case ZPOOL_PROP_HEALTH:
291 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
292 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
293 verify(nvlist_lookup_uint64_array(nvroot,
428870ff
BB		 294 ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc)
295 == 0);
34dc7c2f
BB		 296
297 (void) strlcpy(buf, zpool_state_to_name(intval,
298 vs->vs_aux), len);
299 break;
300 default:
b8864a23 301 (void) snprintf(buf, len, "%llu", (u_longlong_t)intval);
34dc7c2f
BB		 302 }
303 break;
304
305 case PROP_TYPE_INDEX:
306 intval = zpool_get_prop_int(zhp, prop, &src);
307 if (zpool_prop_index_to_string(prop, intval, &strval)
308 != 0)
309 return (-1);
310 (void) strlcpy(buf, strval, len);
311 break;
312
313 default:
314 abort();
315 }
316
317 if (srctype)
318 *srctype = src;
319
320 return (0);
321}
322
323/*
324 * Check if the bootfs name has the same pool name as it is set to.
325 * Assuming bootfs is a valid dataset name.
326 */
327static boolean_t
328bootfs_name_valid(const char *pool, char *bootfs)
329{
330 int len = strlen(pool);
331
b128c09f 332 if (!zfs_name_valid(bootfs, ZFS_TYPE_FILESYSTEM|ZFS_TYPE_SNAPSHOT))
34dc7c2f
BB		 333 return (B_FALSE);
334
335 if (strncmp(pool, bootfs, len) == 0 &&
336 (bootfs[len] == '/' || bootfs[len] == '\0'))
337 return (B_TRUE);
338
339 return (B_FALSE);
340}
341
b128c09f
BB		 342/*
343 * Inspect the configuration to determine if any of the devices contain
344 * an EFI label.
345 */
346static boolean_t
347pool_uses_efi(nvlist_t *config)
348{
349 nvlist_t **child;
350 uint_t c, children;
351
352 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN,
353 &child, &children) != 0)
354 return (read_efi_label(config, NULL) >= 0);
355
356 for (c = 0; c < children; c++) {
357 if (pool_uses_efi(child[c]))
358 return (B_TRUE);
359 }
360 return (B_FALSE);
361}
362
363static boolean_t
364pool_is_bootable(zpool_handle_t *zhp)
365{
366 char bootfs[ZPOOL_MAXNAMELEN];
367
368 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs,
369 sizeof (bootfs), NULL) == 0 && strncmp(bootfs, "-",
370 sizeof (bootfs)) != 0);
371}
372
373
34dc7c2f
BB		 374/*
375 * Given an nvlist of zpool properties to be set, validate that they are
376 * correct, and parse any numeric properties (index, boolean, etc) if they are
377 * specified as strings.
378 */
379static nvlist_t *
b128c09f 380zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
572e2857 381 nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf)
34dc7c2f
BB		 382{
383 nvpair_t *elem;
384 nvlist_t *retprops;
385 zpool_prop_t prop;
386 char *strval;
387 uint64_t intval;
388 char *slash;
389 struct stat64 statbuf;
b128c09f
BB		 390 zpool_handle_t *zhp;
391 nvlist_t *nvroot;
34dc7c2f
BB		 392
393 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) {
394 (void) no_memory(hdl);
395 return (NULL);
396 }
397
398 elem = NULL;
399 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
400 const char *propname = nvpair_name(elem);
401
402 /*
403 * Make sure this property is valid and applies to this type.
404 */
405 if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL) {
406 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
407 "invalid property '%s'"), propname);
408 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
409 goto error;
410 }
411
412 if (zpool_prop_readonly(prop)) {
413 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
414 "is readonly"), propname);
415 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
416 goto error;
417 }
418
419 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops,
420 &strval, &intval, errbuf) != 0)
421 goto error;
422
423 /*
424 * Perform additional checking for specific properties.
425 */
426 switch (prop) {
e75c13c3
BB		 427 default:
428 break;
34dc7c2f
BB		 429 case ZPOOL_PROP_VERSION:
430 if (intval < version || intval > SPA_VERSION) {
431 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
432 "property '%s' number %d is invalid."),
433 propname, intval);
434 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
435 goto error;
436 }
437 break;
438
df30f566
CK		 439 case ZPOOL_PROP_ASHIFT:
440 if (!flags.create) {
441 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
442 "property '%s' can only be set at "
443 "creation time"), propname);
444 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
445 goto error;
446 }
447
b41c9906 448 if (intval != 0 && (intval < 9 || intval > 13)) {
df30f566
CK		 449 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
450 "property '%s' number %d is invalid."),
451 propname, intval);
452 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
453 goto error;
454 }
455 break;
456
34dc7c2f 457 case ZPOOL_PROP_BOOTFS:
572e2857 458 if (flags.create || flags.import) {
34dc7c2f
BB		 459 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
460 "property '%s' cannot be set at creation "
461 "or import time"), propname);
462 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
463 goto error;
464 }
465
466 if (version < SPA_VERSION_BOOTFS) {
467 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
468 "pool must be upgraded to support "
469 "'%s' property"), propname);
470 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
471 goto error;
472 }
473
474 /*
475 * bootfs property value has to be a dataset name and
476 * the dataset has to be in the same pool as it sets to.
477 */
478 if (strval[0] != '\0' && !bootfs_name_valid(poolname,
479 strval)) {
480 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
481 "is an invalid name"), strval);
482 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
483 goto error;
484 }
b128c09f
BB		 485
486 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) {
487 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
488 "could not open pool '%s'"), poolname);
489 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf);
490 goto error;
491 }
492 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
493 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
494
f783130a 495#if defined(__sun__) || defined(__sun)
b128c09f
BB		 496 /*
497 * bootfs property cannot be set on a disk which has
498 * been EFI labeled.
499 */
500 if (pool_uses_efi(nvroot)) {
501 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
502 "property '%s' not supported on "
503 "EFI labeled devices"), propname);
504 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf);
505 zpool_close(zhp);
506 goto error;
507 }
f783130a 508#endif
b128c09f 509 zpool_close(zhp);
34dc7c2f
BB		 510 break;
511
512 case ZPOOL_PROP_ALTROOT:
572e2857 513 if (!flags.create && !flags.import) {
34dc7c2f
BB		 514 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
515 "property '%s' can only be set during pool "
516 "creation or import"), propname);
517 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
518 goto error;
519 }
520
521 if (strval[0] != '/') {
522 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
523 "bad alternate root '%s'"), strval);
524 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
525 goto error;
526 }
527 break;
528
529 case ZPOOL_PROP_CACHEFILE:
530 if (strval[0] == '\0')
531 break;
532
533 if (strcmp(strval, "none") == 0)
534 break;
535
536 if (strval[0] != '/') {
537 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
538 "property '%s' must be empty, an "
539 "absolute path, or 'none'"), propname);
540 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
541 goto error;
542 }
543
544 slash = strrchr(strval, '/');
545
546 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 ||
547 strcmp(slash, "/..") == 0) {
548 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
549 "'%s' is not a valid file"), strval);
550 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
551 goto error;
552 }
553
554 *slash = '\0';
555
556 if (strval[0] != '\0' &&
557 (stat64(strval, &statbuf) != 0 ||
558 !S_ISDIR(statbuf.st_mode))) {
559 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
560 "'%s' is not a valid directory"),
561 strval);
562 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
563 goto error;
564 }
565
566 *slash = '/';
567 break;
572e2857
BB		 568
569 case ZPOOL_PROP_READONLY:
570 if (!flags.import) {
571 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
572 "property '%s' can only be set at "
573 "import time"), propname);
574 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
575 goto error;
576 }
577 break;
34dc7c2f
BB		 578 }
579 }
580
581 return (retprops);
582error:
583 nvlist_free(retprops);
584 return (NULL);
585}
586
587/*
588 * Set zpool property : propname=propval.
589 */
590int
591zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval)
592{
2598c001 593 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 594 int ret = -1;
595 char errbuf[1024];
596 nvlist_t *nvl = NULL;
597 nvlist_t *realprops;
598 uint64_t version;
572e2857 599 prop_flags_t flags = { 0 };
34dc7c2f
BB		 600
601 (void) snprintf(errbuf, sizeof (errbuf),
602 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
603 zhp->zpool_name);
604
34dc7c2f
BB		 605 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
606 return (no_memory(zhp->zpool_hdl));
607
608 if (nvlist_add_string(nvl, propname, propval) != 0) {
609 nvlist_free(nvl);
610 return (no_memory(zhp->zpool_hdl));
611 }
612
613 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
b128c09f 614 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl,
572e2857 615 zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) {
34dc7c2f
BB		 616 nvlist_free(nvl);
617 return (-1);
618 }
619
620 nvlist_free(nvl);
621 nvl = realprops;
622
623 /*
624 * Execute the corresponding ioctl() to set this property.
625 */
626 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
627
628 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) {
629 nvlist_free(nvl);
630 return (-1);
631 }
632
633 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc);
634
635 zcmd_free_nvlists(&zc);
636 nvlist_free(nvl);
637
638 if (ret)
639 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf);
640 else
641 (void) zpool_props_refresh(zhp);
642
643 return (ret);
644}
645
646int
647zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp)
648{
649 libzfs_handle_t *hdl = zhp->zpool_hdl;
650 zprop_list_t *entry;
651 char buf[ZFS_MAXPROPLEN];
652
653 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0)
654 return (-1);
655
656 for (entry = *plp; entry != NULL; entry = entry->pl_next) {
657
658 if (entry->pl_fixed)
659 continue;
660
661 if (entry->pl_prop != ZPROP_INVAL &&
662 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf),
663 NULL) == 0) {
664 if (strlen(buf) > entry->pl_width)
665 entry->pl_width = strlen(buf);
666 }
667 }
668
669 return (0);
670}
671
672
9babb374
BB		 673/*
674 * Don't start the slice at the default block of 34; many storage
d603ed6c
BB		 675 * devices will use a stripe width of 128k, other vendors prefer a 1m
676 * alignment. It is best to play it safe and ensure a 1m alignment
613d88ed
NB		 677 * given 512B blocks. When the block size is larger by a power of 2
678 * we will still be 1m aligned. Some devices are sensitive to the
679 * partition ending alignment as well.
9babb374 680 */
613d88ed
NB		 681#define NEW_START_BLOCK 2048
682#define PARTITION_END_ALIGNMENT 2048
9babb374 683
34dc7c2f
BB		 684/*
685 * Validate the given pool name, optionally putting an extended error message in
686 * 'buf'.
687 */
688boolean_t
689zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool)
690{
691 namecheck_err_t why;
692 char what;
693 int ret;
694
695 ret = pool_namecheck(pool, &why, &what);
696
697 /*
698 * The rules for reserved pool names were extended at a later point.
699 * But we need to support users with existing pools that may now be
700 * invalid. So we only check for this expanded set of names during a
701 * create (or import), and only in userland.
702 */
703 if (ret == 0 && !isopen &&
704 (strncmp(pool, "mirror", 6) == 0 ||
705 strncmp(pool, "raidz", 5) == 0 ||
706 strncmp(pool, "spare", 5) == 0 ||
707 strcmp(pool, "log") == 0)) {
708 if (hdl != NULL)
709 zfs_error_aux(hdl,
710 dgettext(TEXT_DOMAIN, "name is reserved"));
711 return (B_FALSE);
712 }
713
714
715 if (ret != 0) {
716 if (hdl != NULL) {
717 switch (why) {
718 case NAME_ERR_TOOLONG:
719 zfs_error_aux(hdl,
720 dgettext(TEXT_DOMAIN, "name is too long"));
721 break;
722
723 case NAME_ERR_INVALCHAR:
724 zfs_error_aux(hdl,
725 dgettext(TEXT_DOMAIN, "invalid character "
726 "'%c' in pool name"), what);
727 break;
728
729 case NAME_ERR_NOLETTER:
730 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
731 "name must begin with a letter"));
732 break;
733
734 case NAME_ERR_RESERVED:
735 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
736 "name is reserved"));
737 break;
738
739 case NAME_ERR_DISKLIKE:
740 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
741 "pool name is reserved"));
742 break;
743
744 case NAME_ERR_LEADING_SLASH:
745 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
746 "leading slash in name"));
747 break;
748
749 case NAME_ERR_EMPTY_COMPONENT:
750 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
751 "empty component in name"));
752 break;
753
754 case NAME_ERR_TRAILING_SLASH:
755 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
756 "trailing slash in name"));
757 break;
758
759 case NAME_ERR_MULTIPLE_AT:
760 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
761 "multiple '@' delimiters in name"));
762 break;
e75c13c3
BB		 763 case NAME_ERR_NO_AT:
764 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
765 "permission set is missing '@'"));
766 break;
34dc7c2f
BB		 767 }
768 }
769 return (B_FALSE);
770 }
771
772 return (B_TRUE);
773}
774
775/*
776 * Open a handle to the given pool, even if the pool is currently in the FAULTED
777 * state.
778 */
779zpool_handle_t *
780zpool_open_canfail(libzfs_handle_t *hdl, const char *pool)
781{
782 zpool_handle_t *zhp;
783 boolean_t missing;
784
785 /*
786 * Make sure the pool name is valid.
787 */
788 if (!zpool_name_valid(hdl, B_TRUE, pool)) {
789 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME,
790 dgettext(TEXT_DOMAIN, "cannot open '%s'"),
791 pool);
792 return (NULL);
793 }
794
795 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL)
796 return (NULL);
797
798 zhp->zpool_hdl = hdl;
799 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name));
800
801 if (zpool_refresh_stats(zhp, &missing) != 0) {
802 zpool_close(zhp);
803 return (NULL);
804 }
805
806 if (missing) {
807 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool"));
808 (void) zfs_error_fmt(hdl, EZFS_NOENT,
809 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool);
810 zpool_close(zhp);
811 return (NULL);
812 }
813
814 return (zhp);
815}
816
817/*
818 * Like the above, but silent on error. Used when iterating over pools (because
819 * the configuration cache may be out of date).
820 */
821int
822zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret)
823{
824 zpool_handle_t *zhp;
825 boolean_t missing;
826
827 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL)
828 return (-1);
829
830 zhp->zpool_hdl = hdl;
831 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name));
832
833 if (zpool_refresh_stats(zhp, &missing) != 0) {
834 zpool_close(zhp);
835 return (-1);
836 }
837
838 if (missing) {
839 zpool_close(zhp);
840 *ret = NULL;
841 return (0);
842 }
843
844 *ret = zhp;
845 return (0);
846}
847
848/*
849 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted
850 * state.
851 */
852zpool_handle_t *
853zpool_open(libzfs_handle_t *hdl, const char *pool)
854{
855 zpool_handle_t *zhp;
856
857 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL)
858 return (NULL);
859
860 if (zhp->zpool_state == POOL_STATE_UNAVAIL) {
861 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL,
862 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name);
863 zpool_close(zhp);
864 return (NULL);
865 }
866
867 return (zhp);
868}
869
870/*
871 * Close the handle. Simply frees the memory associated with the handle.
872 */
873void
874zpool_close(zpool_handle_t *zhp)
875{
876 if (zhp->zpool_config)
877 nvlist_free(zhp->zpool_config);
878 if (zhp->zpool_old_config)
879 nvlist_free(zhp->zpool_old_config);
880 if (zhp->zpool_props)
881 nvlist_free(zhp->zpool_props);
882 free(zhp);
883}
884
885/*
886 * Return the name of the pool.
887 */
888const char *
889zpool_get_name(zpool_handle_t *zhp)
890{
891 return (zhp->zpool_name);
892}
893
894
895/*
896 * Return the state of the pool (ACTIVE or UNAVAILABLE)
897 */
898int
899zpool_get_state(zpool_handle_t *zhp)
900{
901 return (zhp->zpool_state);
902}
903
904/*
905 * Create the named pool, using the provided vdev list. It is assumed
906 * that the consumer has already validated the contents of the nvlist, so we
907 * don't have to worry about error semantics.
908 */
909int
910zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot,
b128c09f 911 nvlist_t *props, nvlist_t *fsprops)
34dc7c2f 912{
2598c001 913 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
b128c09f
BB		 914 nvlist_t *zc_fsprops = NULL;
915 nvlist_t *zc_props = NULL;
34dc7c2f
BB		 916 char msg[1024];
917 char *altroot;
b128c09f 918 int ret = -1;
34dc7c2f
BB		 919
920 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
921 "cannot create '%s'"), pool);
922
923 if (!zpool_name_valid(hdl, B_FALSE, pool))
924 return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
925
926 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
927 return (-1);
928
b128c09f 929 if (props) {
572e2857
BB		 930 prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE };
931
b128c09f 932 if ((zc_props = zpool_valid_proplist(hdl, pool, props,
572e2857 933 SPA_VERSION_1, flags, msg)) == NULL) {
b128c09f
BB		 934 goto create_failed;
935 }
936 }
34dc7c2f 937
b128c09f
BB		 938 if (fsprops) {
939 uint64_t zoned;
940 char *zonestr;
941
942 zoned = ((nvlist_lookup_string(fsprops,
943 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) &&
944 strcmp(zonestr, "on") == 0);
945
946 if ((zc_fsprops = zfs_valid_proplist(hdl,
947 ZFS_TYPE_FILESYSTEM, fsprops, zoned, NULL, msg)) == NULL) {
948 goto create_failed;
949 }
950 if (!zc_props &&
951 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) {
952 goto create_failed;
953 }
954 if (nvlist_add_nvlist(zc_props,
955 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) {
956 goto create_failed;
957 }
34dc7c2f
BB		 958 }
959
b128c09f
BB		 960 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
961 goto create_failed;
962
34dc7c2f
BB		 963 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name));
964
b128c09f 965 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) {
34dc7c2f
BB		 966
967 zcmd_free_nvlists(&zc);
b128c09f
BB		 968 nvlist_free(zc_props);
969 nvlist_free(zc_fsprops);
34dc7c2f
BB		 970
971 switch (errno) {
972 case EBUSY:
973 /*
974 * This can happen if the user has specified the same
975 * device multiple times. We can't reliably detect this
976 * until we try to add it and see we already have a
d603ed6c
BB		 977 * label. This can also happen under if the device is
978 * part of an active md or lvm device.
34dc7c2f
BB		 979 */
980 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
d603ed6c
BB		 981 "one or more vdevs refer to the same device, or one of\n"
982 "the devices is part of an active md or lvm device"));
34dc7c2f
BB		 983 return (zfs_error(hdl, EZFS_BADDEV, msg));
984
985 case EOVERFLOW:
986 /*
987 * This occurs when one of the devices is below
988 * SPA_MINDEVSIZE. Unfortunately, we can't detect which
989 * device was the problem device since there's no
990 * reliable way to determine device size from userland.
991 */
992 {
993 char buf[64];
994
995 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf));
996
997 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
998 "one or more devices is less than the "
999 "minimum size (%s)"), buf);
1000 }
1001 return (zfs_error(hdl, EZFS_BADDEV, msg));
1002
1003 case ENOSPC:
1004 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1005 "one or more devices is out of space"));
1006 return (zfs_error(hdl, EZFS_BADDEV, msg));
1007
1008 case ENOTBLK:
1009 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1010 "cache device must be a disk or disk slice"));
1011 return (zfs_error(hdl, EZFS_BADDEV, msg));
1012
1013 default:
1014 return (zpool_standard_error(hdl, errno, msg));
1015 }
1016 }
1017
1018 /*
1019 * If this is an alternate root pool, then we automatically set the
1020 * mountpoint of the root dataset to be '/'.
1021 */
1022 if (nvlist_lookup_string(props, zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
1023 &altroot) == 0) {
1024 zfs_handle_t *zhp;
1025
1026 verify((zhp = zfs_open(hdl, pool, ZFS_TYPE_DATASET)) != NULL);
1027 verify(zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
1028 "/") == 0);
1029
1030 zfs_close(zhp);
1031 }
1032
b128c09f 1033create_failed:
34dc7c2f 1034 zcmd_free_nvlists(&zc);
b128c09f
BB		 1035 nvlist_free(zc_props);
1036 nvlist_free(zc_fsprops);
1037 return (ret);
34dc7c2f
BB		 1038}
1039
1040/*
1041 * Destroy the given pool. It is up to the caller to ensure that there are no
1042 * datasets left in the pool.
1043 */
1044int
1045zpool_destroy(zpool_handle_t *zhp)
1046{
2598c001 1047 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 1048 zfs_handle_t *zfp = NULL;
1049 libzfs_handle_t *hdl = zhp->zpool_hdl;
1050 char msg[1024];
1051
1052 if (zhp->zpool_state == POOL_STATE_ACTIVE &&
572e2857 1053 (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL)
34dc7c2f
BB		 1054 return (-1);
1055
34dc7c2f
BB		 1056 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1057
572e2857 1058 if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) {
34dc7c2f
BB		 1059 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1060 "cannot destroy '%s'"), zhp->zpool_name);
1061
1062 if (errno == EROFS) {
1063 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1064 "one or more devices is read only"));
1065 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1066 } else {
1067 (void) zpool_standard_error(hdl, errno, msg);
1068 }
1069
1070 if (zfp)
1071 zfs_close(zfp);
1072 return (-1);
1073 }
1074
1075 if (zfp) {
1076 remove_mountpoint(zfp);
1077 zfs_close(zfp);
1078 }
1079
1080 return (0);
1081}
1082
1083/*
1084 * Add the given vdevs to the pool. The caller must have already performed the
1085 * necessary verification to ensure that the vdev specification is well-formed.
1086 */
1087int
1088zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot)
1089{
2598c001 1090 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 1091 int ret;
1092 libzfs_handle_t *hdl = zhp->zpool_hdl;
1093 char msg[1024];
1094 nvlist_t **spares, **l2cache;
1095 uint_t nspares, nl2cache;
1096
1097 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1098 "cannot add to '%s'"), zhp->zpool_name);
1099
1100 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) <
1101 SPA_VERSION_SPARES &&
1102 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
1103 &spares, &nspares) == 0) {
1104 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be "
1105 "upgraded to add hot spares"));
1106 return (zfs_error(hdl, EZFS_BADVERSION, msg));
1107 }
1108
b128c09f
BB		 1109 if (pool_is_bootable(zhp) && nvlist_lookup_nvlist_array(nvroot,
1110 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0) {
1111 uint64_t s;
1112
1113 for (s = 0; s < nspares; s++) {
1114 char *path;
1115
1116 if (nvlist_lookup_string(spares[s], ZPOOL_CONFIG_PATH,
1117 &path) == 0 && pool_uses_efi(spares[s])) {
1118 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1119 "device '%s' contains an EFI label and "
1120 "cannot be used on root pools."),
428870ff
BB		 1121 zpool_vdev_name(hdl, NULL, spares[s],
1122 B_FALSE));
b128c09f
BB		 1123 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg));
1124 }
1125 }
1126 }
1127
34dc7c2f
BB		 1128 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) <
1129 SPA_VERSION_L2CACHE &&
1130 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
1131 &l2cache, &nl2cache) == 0) {
1132 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be "
1133 "upgraded to add cache devices"));
1134 return (zfs_error(hdl, EZFS_BADVERSION, msg));
1135 }
1136
1137 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
1138 return (-1);
1139 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1140
572e2857 1141 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) {
34dc7c2f
BB		 1142 switch (errno) {
1143 case EBUSY:
1144 /*
1145 * This can happen if the user has specified the same
1146 * device multiple times. We can't reliably detect this
1147 * until we try to add it and see we already have a
1148 * label.
1149 */
1150 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1151 "one or more vdevs refer to the same device"));
1152 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1153 break;
1154
1155 case EOVERFLOW:
1156 /*
1157 * This occurrs when one of the devices is below
1158 * SPA_MINDEVSIZE. Unfortunately, we can't detect which
1159 * device was the problem device since there's no
1160 * reliable way to determine device size from userland.
1161 */
1162 {
1163 char buf[64];
1164
1165 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf));
1166
1167 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1168 "device is less than the minimum "
1169 "size (%s)"), buf);
1170 }
1171 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1172 break;
1173
1174 case ENOTSUP:
1175 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1176 "pool must be upgraded to add these vdevs"));
1177 (void) zfs_error(hdl, EZFS_BADVERSION, msg);
1178 break;
1179
1180 case EDOM:
1181 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1182 "root pool can not have multiple vdevs"
1183 " or separate logs"));
1184 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, msg);
1185 break;
1186
1187 case ENOTBLK:
1188 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1189 "cache device must be a disk or disk slice"));
1190 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1191 break;
1192
1193 default:
1194 (void) zpool_standard_error(hdl, errno, msg);
1195 }
1196
1197 ret = -1;
1198 } else {
1199 ret = 0;
1200 }
1201
1202 zcmd_free_nvlists(&zc);
1203
1204 return (ret);
1205}
1206
1207/*
1208 * Exports the pool from the system. The caller must ensure that there are no
1209 * mounted datasets in the pool.
1210 */
1211int
fb5f0bc8 1212zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce)
34dc7c2f 1213{
2598c001 1214 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
b128c09f 1215 char msg[1024];
34dc7c2f 1216
b128c09f
BB		 1217 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1218 "cannot export '%s'"), zhp->zpool_name);
1219
34dc7c2f 1220 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 1221 zc.zc_cookie = force;
fb5f0bc8 1222 zc.zc_guid = hardforce;
b128c09f
BB		 1223
1224 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) {
1225 switch (errno) {
1226 case EXDEV:
1227 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN,
1228 "use '-f' to override the following errors:\n"
1229 "'%s' has an active shared spare which could be"
1230 " used by other pools once '%s' is exported."),
1231 zhp->zpool_name, zhp->zpool_name);
1232 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE,
1233 msg));
1234 default:
1235 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno,
1236 msg));
1237 }
1238 }
34dc7c2f 1239
34dc7c2f
BB		 1240 return (0);
1241}
1242
fb5f0bc8
BB		 1243int
1244zpool_export(zpool_handle_t *zhp, boolean_t force)
1245{
1246 return (zpool_export_common(zhp, force, B_FALSE));
1247}
1248
1249int
1250zpool_export_force(zpool_handle_t *zhp)
1251{
1252 return (zpool_export_common(zhp, B_TRUE, B_TRUE));
1253}
1254
428870ff
BB		 1255static void
1256zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun,
572e2857 1257 nvlist_t *config)
428870ff 1258{
572e2857 1259 nvlist_t *nv = NULL;
428870ff
BB		 1260 uint64_t rewindto;
1261 int64_t loss = -1;
1262 struct tm t;
1263 char timestr[128];
1264
572e2857
BB		 1265 if (!hdl->libzfs_printerr || config == NULL)
1266 return;
1267
1268 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0)
428870ff
BB		 1269 return;
1270
572e2857 1271 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
428870ff 1272 return;
572e2857 1273 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
428870ff
BB		 1274
1275 if (localtime_r((time_t *)&rewindto, &t) != NULL &&
b8864a23 1276 strftime(timestr, 128, "%c", &t) != 0) {
428870ff
BB		 1277 if (dryrun) {
1278 (void) printf(dgettext(TEXT_DOMAIN,
1279 "Would be able to return %s "
1280 "to its state as of %s.\n"),
1281 name, timestr);
1282 } else {
1283 (void) printf(dgettext(TEXT_DOMAIN,
1284 "Pool %s returned to its state as of %s.\n"),
1285 name, timestr);
1286 }
1287 if (loss > 120) {
1288 (void) printf(dgettext(TEXT_DOMAIN,
1289 "%s approximately %lld "),
1290 dryrun ? "Would discard" : "Discarded",
b8864a23 1291 ((longlong_t)loss + 30) / 60);
428870ff
BB		 1292 (void) printf(dgettext(TEXT_DOMAIN,
1293 "minutes of transactions.\n"));
1294 } else if (loss > 0) {
1295 (void) printf(dgettext(TEXT_DOMAIN,
1296 "%s approximately %lld "),
b8864a23
BB		 1297 dryrun ? "Would discard" : "Discarded",
1298 (longlong_t)loss);
428870ff
BB		 1299 (void) printf(dgettext(TEXT_DOMAIN,
1300 "seconds of transactions.\n"));
1301 }
1302 }
1303}
1304
1305void
1306zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason,
1307 nvlist_t *config)
1308{
572e2857 1309 nvlist_t *nv = NULL;
428870ff
BB		 1310 int64_t loss = -1;
1311 uint64_t edata = UINT64_MAX;
1312 uint64_t rewindto;
1313 struct tm t;
1314 char timestr[128];
1315
1316 if (!hdl->libzfs_printerr)
1317 return;
1318
1319 if (reason >= 0)
1320 (void) printf(dgettext(TEXT_DOMAIN, "action: "));
1321 else
1322 (void) printf(dgettext(TEXT_DOMAIN, "\t"));
1323
1324 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */
572e2857
BB		 1325 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 ||
1326 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
428870ff
BB		 1327 goto no_info;
1328
572e2857
BB		 1329 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
1330 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS,
428870ff
BB		 1331 &edata);
1332
1333 (void) printf(dgettext(TEXT_DOMAIN,
1334 "Recovery is possible, but will result in some data loss.\n"));
1335
1336 if (localtime_r((time_t *)&rewindto, &t) != NULL &&
b8864a23 1337 strftime(timestr, 128, "%c", &t) != 0) {
428870ff
BB		 1338 (void) printf(dgettext(TEXT_DOMAIN,
1339 "\tReturning the pool to its state as of %s\n"
1340 "\tshould correct the problem. "),
1341 timestr);
1342 } else {
1343 (void) printf(dgettext(TEXT_DOMAIN,
1344 "\tReverting the pool to an earlier state "
1345 "should correct the problem.\n\t"));
1346 }
1347
1348 if (loss > 120) {
1349 (void) printf(dgettext(TEXT_DOMAIN,
1350 "Approximately %lld minutes of data\n"
b8864a23
BB		 1351 "\tmust be discarded, irreversibly. "),
1352 ((longlong_t)loss + 30) / 60);
428870ff
BB		 1353 } else if (loss > 0) {
1354 (void) printf(dgettext(TEXT_DOMAIN,
1355 "Approximately %lld seconds of data\n"
b8864a23
BB		 1356 "\tmust be discarded, irreversibly. "),
1357 (longlong_t)loss);
428870ff
BB		 1358 }
1359 if (edata != 0 && edata != UINT64_MAX) {
1360 if (edata == 1) {
1361 (void) printf(dgettext(TEXT_DOMAIN,
1362 "After rewind, at least\n"
1363 "\tone persistent user-data error will remain. "));
1364 } else {
1365 (void) printf(dgettext(TEXT_DOMAIN,
1366 "After rewind, several\n"
1367 "\tpersistent user-data errors will remain. "));
1368 }
1369 }
1370 (void) printf(dgettext(TEXT_DOMAIN,
1371 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "),
1372 reason >= 0 ? "clear" : "import", name);
1373
1374 (void) printf(dgettext(TEXT_DOMAIN,
1375 "A scrub of the pool\n"
1376 "\tis strongly recommended after recovery.\n"));
1377 return;
1378
1379no_info:
1380 (void) printf(dgettext(TEXT_DOMAIN,
1381 "Destroy and re-create the pool from\n\ta backup source.\n"));
1382}
1383
34dc7c2f
BB		 1384/*
1385 * zpool_import() is a contracted interface. Should be kept the same
1386 * if possible.
1387 *
1388 * Applications should use zpool_import_props() to import a pool with
1389 * new properties value to be set.
1390 */
1391int
1392zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
1393 char *altroot)
1394{
1395 nvlist_t *props = NULL;
1396 int ret;
1397
1398 if (altroot != NULL) {
1399 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
1400 return (zfs_error_fmt(hdl, EZFS_NOMEM,
1401 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1402 newname));
1403 }
1404
1405 if (nvlist_add_string(props,
fb5f0bc8
BB		 1406 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 ||
1407 nvlist_add_string(props,
1408 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) {
34dc7c2f
BB		 1409 nvlist_free(props);
1410 return (zfs_error_fmt(hdl, EZFS_NOMEM,
1411 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1412 newname));
1413 }
1414 }
1415
572e2857
BB		 1416 ret = zpool_import_props(hdl, config, newname, props,
1417 ZFS_IMPORT_NORMAL);
34dc7c2f
BB		 1418 if (props)
1419 nvlist_free(props);
1420 return (ret);
1421}
1422
572e2857
BB		 1423static void
1424print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv,
1425 int indent)
1426{
1427 nvlist_t **child;
1428 uint_t c, children;
1429 char *vname;
1430 uint64_t is_log = 0;
1431
1432 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG,
1433 &is_log);
1434
1435 if (name != NULL)
1436 (void) printf("\t%*s%s%s\n", indent, "", name,
1437 is_log ? " [log]" : "");
1438
1439 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1440 &child, &children) != 0)
1441 return;
1442
1443 for (c = 0; c < children; c++) {
1444 vname = zpool_vdev_name(hdl, NULL, child[c], B_TRUE);
1445 print_vdev_tree(hdl, vname, child[c], indent + 2);
1446 free(vname);
1447 }
1448}
1449
34dc7c2f
BB		 1450/*
1451 * Import the given pool using the known configuration and a list of
1452 * properties to be set. The configuration should have come from
1453 * zpool_find_import(). The 'newname' parameters control whether the pool
1454 * is imported with a different name.
1455 */
1456int
1457zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
572e2857 1458 nvlist_t *props, int flags)
34dc7c2f 1459{
2598c001 1460 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
428870ff 1461 zpool_rewind_policy_t policy;
572e2857
BB		 1462 nvlist_t *nv = NULL;
1463 nvlist_t *nvinfo = NULL;
1464 nvlist_t *missing = NULL;
34dc7c2f
BB		 1465 char *thename;
1466 char *origname;
1467 int ret;
572e2857 1468 int error = 0;
34dc7c2f
BB		 1469 char errbuf[1024];
1470
1471 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
1472 &origname) == 0);
1473
1474 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
1475 "cannot import pool '%s'"), origname);
1476
1477 if (newname != NULL) {
1478 if (!zpool_name_valid(hdl, B_FALSE, newname))
1479 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME,
1480 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1481 newname));
1482 thename = (char *)newname;
1483 } else {
1484 thename = origname;
1485 }
1486
1487 if (props) {
1488 uint64_t version;
572e2857 1489 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
34dc7c2f
BB		 1490
1491 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
1492 &version) == 0);
1493
b128c09f 1494 if ((props = zpool_valid_proplist(hdl, origname,
572e2857 1495 props, version, flags, errbuf)) == NULL) {
34dc7c2f
BB		 1496 return (-1);
1497 } else if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
1498 nvlist_free(props);
1499 return (-1);
1500 }
1501 }
1502
1503 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name));
1504
1505 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
1506 &zc.zc_guid) == 0);
1507
1508 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) {
1509 nvlist_free(props);
1510 return (-1);
1511 }
572e2857 1512 if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) {
428870ff
BB		 1513 nvlist_free(props);
1514 return (-1);
1515 }
34dc7c2f 1516
572e2857
BB		 1517 zc.zc_cookie = flags;
1518 while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 &&
1519 errno == ENOMEM) {
1520 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
1521 zcmd_free_nvlists(&zc);
1522 return (-1);
1523 }
1524 }
1525 if (ret != 0)
1526 error = errno;
1527
1528 (void) zcmd_read_dst_nvlist(hdl, &zc, &nv);
1529 zpool_get_rewind_policy(config, &policy);
1530
1531 if (error) {
34dc7c2f 1532 char desc[1024];
428870ff 1533
428870ff
BB		 1534 /*
1535 * Dry-run failed, but we print out what success
1536 * looks like if we found a best txg
1537 */
572e2857 1538 if (policy.zrp_request & ZPOOL_TRY_REWIND) {
428870ff 1539 zpool_rewind_exclaim(hdl, newname ? origname : thename,
572e2857
BB		 1540 B_TRUE, nv);
1541 nvlist_free(nv);
428870ff
BB		 1542 return (-1);
1543 }
1544
34dc7c2f
BB		 1545 if (newname == NULL)
1546 (void) snprintf(desc, sizeof (desc),
1547 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1548 thename);
1549 else
1550 (void) snprintf(desc, sizeof (desc),
1551 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"),
1552 origname, thename);
1553
572e2857 1554 switch (error) {
34dc7c2f
BB		 1555 case ENOTSUP:
1556 /*
1557 * Unsupported version.
1558 */
1559 (void) zfs_error(hdl, EZFS_BADVERSION, desc);
1560 break;
1561
1562 case EINVAL:
1563 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc);
1564 break;
1565
428870ff
BB		 1566 case EROFS:
1567 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1568 "one or more devices is read only"));
1569 (void) zfs_error(hdl, EZFS_BADDEV, desc);
1570 break;
1571
572e2857
BB		 1572 case ENXIO:
1573 if (nv && nvlist_lookup_nvlist(nv,
1574 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 &&
1575 nvlist_lookup_nvlist(nvinfo,
1576 ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) {
1577 (void) printf(dgettext(TEXT_DOMAIN,
1578 "The devices below are missing, use "
1579 "'-m' to import the pool anyway:\n"));
1580 print_vdev_tree(hdl, NULL, missing, 2);
1581 (void) printf("\n");
1582 }
1583 (void) zpool_standard_error(hdl, error, desc);
1584 break;
1585
1586 case EEXIST:
1587 (void) zpool_standard_error(hdl, error, desc);
1588 break;
1589
abe5b8fb
BB		 1590 case EBUSY:
1591 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1592 "one or more devices are already in use\n"));
1593 (void) zfs_error(hdl, EZFS_BADDEV, desc);
1594 break;
1595
34dc7c2f 1596 default:
572e2857 1597 (void) zpool_standard_error(hdl, error, desc);
428870ff 1598 zpool_explain_recover(hdl,
572e2857 1599 newname ? origname : thename, -error, nv);
428870ff 1600 break;
34dc7c2f
BB		 1601 }
1602
572e2857 1603 nvlist_free(nv);
34dc7c2f
BB		 1604 ret = -1;
1605 } else {
1606 zpool_handle_t *zhp;
1607
1608 /*
1609 * This should never fail, but play it safe anyway.
1610 */
428870ff 1611 if (zpool_open_silent(hdl, thename, &zhp) != 0)
34dc7c2f 1612 ret = -1;
428870ff 1613 else if (zhp != NULL)
34dc7c2f 1614 zpool_close(zhp);
428870ff
BB		 1615 if (policy.zrp_request &
1616 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
1617 zpool_rewind_exclaim(hdl, newname ? origname : thename,
572e2857 1618 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv);
34dc7c2f 1619 }
572e2857 1620 nvlist_free(nv);
428870ff 1621 return (0);
34dc7c2f
BB		 1622 }
1623
1624 zcmd_free_nvlists(&zc);
1625 nvlist_free(props);
1626
1627 return (ret);
1628}
1629
1630/*
428870ff 1631 * Scan the pool.
34dc7c2f
BB		 1632 */
1633int
428870ff 1634zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func)
34dc7c2f 1635{
2598c001 1636 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 1637 char msg[1024];
1638 libzfs_handle_t *hdl = zhp->zpool_hdl;
1639
1640 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
428870ff 1641 zc.zc_cookie = func;
34dc7c2f 1642
572e2857 1643 if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 ||
428870ff 1644 (errno == ENOENT && func != POOL_SCAN_NONE))
34dc7c2f
BB		 1645 return (0);
1646
428870ff
BB		 1647 if (func == POOL_SCAN_SCRUB) {
1648 (void) snprintf(msg, sizeof (msg),
1649 dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name);
1650 } else if (func == POOL_SCAN_NONE) {
1651 (void) snprintf(msg, sizeof (msg),
1652 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"),
1653 zc.zc_name);
1654 } else {
1655 assert(!"unexpected result");
1656 }
34dc7c2f 1657
428870ff
BB		 1658 if (errno == EBUSY) {
1659 nvlist_t *nvroot;
1660 pool_scan_stat_t *ps = NULL;
1661 uint_t psc;
1662
1663 verify(nvlist_lookup_nvlist(zhp->zpool_config,
1664 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
1665 (void) nvlist_lookup_uint64_array(nvroot,
1666 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc);
1667 if (ps && ps->pss_func == POOL_SCAN_SCRUB)
1668 return (zfs_error(hdl, EZFS_SCRUBBING, msg));
1669 else
1670 return (zfs_error(hdl, EZFS_RESILVERING, msg));
1671 } else if (errno == ENOENT) {
1672 return (zfs_error(hdl, EZFS_NO_SCRUB, msg));
1673 } else {
34dc7c2f 1674 return (zpool_standard_error(hdl, errno, msg));
428870ff
BB		 1675 }
1676}
1677
34dc7c2f 1678/*
9babb374
BB		 1679 * Find a vdev that matches the search criteria specified. We use the
1680 * the nvpair name to determine how we should look for the device.
34dc7c2f
BB		 1681 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL
1682 * spare; but FALSE if its an INUSE spare.
1683 */
1684static nvlist_t *
9babb374
BB		 1685vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare,
1686 boolean_t *l2cache, boolean_t *log)
34dc7c2f
BB		 1687{
1688 uint_t c, children;
1689 nvlist_t **child;
34dc7c2f 1690 nvlist_t *ret;
b128c09f 1691 uint64_t is_log;
9babb374
BB		 1692 char *srchkey;
1693 nvpair_t *pair = nvlist_next_nvpair(search, NULL);
1694
1695 /* Nothing to look for */
1696 if (search == NULL || pair == NULL)
1697 return (NULL);
1698
1699 /* Obtain the key we will use to search */
1700 srchkey = nvpair_name(pair);
1701
1702 switch (nvpair_type(pair)) {
572e2857 1703 case DATA_TYPE_UINT64:
9babb374 1704 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) {
572e2857
BB		 1705 uint64_t srchval, theguid;
1706
1707 verify(nvpair_value_uint64(pair, &srchval) == 0);
1708 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
1709 &theguid) == 0);
1710 if (theguid == srchval)
1711 return (nv);
9babb374
BB		 1712 }
1713 break;
9babb374
BB		 1714
1715 case DATA_TYPE_STRING: {
1716 char *srchval, *val;
1717
1718 verify(nvpair_value_string(pair, &srchval) == 0);
1719 if (nvlist_lookup_string(nv, srchkey, &val) != 0)
1720 break;
34dc7c2f 1721
9babb374 1722 /*
428870ff
BB		 1723 * Search for the requested value. Special cases:
1724 *
a2c6816c
NB		 1725 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in with a
1726 * partition suffix "1", "-part1", or "p1". The suffix is hidden
1727 * from the user, but included in the string, so this matches around
1728 * it.
428870ff
BB		 1729 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE).
1730 *
1731 * Otherwise, all other searches are simple string compares.
9babb374 1732 */
a2c6816c 1733 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0) {
9babb374
BB		 1734 uint64_t wholedisk = 0;
1735
1736 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
1737 &wholedisk);
1738 if (wholedisk) {
a2c6816c 1739 char buf[MAXPATHLEN];
428870ff 1740
a2c6816c
NB		 1741 zfs_append_partition(srchval, buf, sizeof (buf));
1742 if (strcmp(val, buf) == 0)
428870ff
BB		 1743 return (nv);
1744
9babb374
BB		 1745 break;
1746 }
428870ff
BB		 1747 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) {
1748 char *type, *idx, *end, *p;
1749 uint64_t id, vdev_id;
1750
1751 /*
1752 * Determine our vdev type, keeping in mind
1753 * that the srchval is composed of a type and
1754 * vdev id pair (i.e. mirror-4).
1755 */
1756 if ((type = strdup(srchval)) == NULL)
1757 return (NULL);
1758
1759 if ((p = strrchr(type, '-')) == NULL) {
1760 free(type);
1761 break;
1762 }
1763 idx = p + 1;
1764 *p = '\0';
1765
1766 /*
1767 * If the types don't match then keep looking.
1768 */
1769 if (strncmp(val, type, strlen(val)) != 0) {
1770 free(type);
1771 break;
1772 }
1773
1774 verify(strncmp(type, VDEV_TYPE_RAIDZ,
1775 strlen(VDEV_TYPE_RAIDZ)) == 0 ||
1776 strncmp(type, VDEV_TYPE_MIRROR,
1777 strlen(VDEV_TYPE_MIRROR)) == 0);
1778 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
1779 &id) == 0);
1780
1781 errno = 0;
1782 vdev_id = strtoull(idx, &end, 10);
1783
1784 free(type);
1785 if (errno != 0)
1786 return (NULL);
1787
1788 /*
1789 * Now verify that we have the correct vdev id.
1790 */
1791 if (vdev_id == id)
1792 return (nv);
9babb374 1793 }
34dc7c2f 1794
34dc7c2f 1795 /*
9babb374 1796 * Common case
34dc7c2f 1797 */
9babb374 1798 if (strcmp(srchval, val) == 0)
34dc7c2f 1799 return (nv);
9babb374
BB		 1800 break;
1801 }
1802
1803 default:
1804 break;
34dc7c2f
BB		 1805 }
1806
1807 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1808 &child, &children) != 0)
1809 return (NULL);
1810
b128c09f 1811 for (c = 0; c < children; c++) {
9babb374 1812 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f
BB		 1813 avail_spare, l2cache, NULL)) != NULL) {
1814 /*
1815 * The 'is_log' value is only set for the toplevel
1816 * vdev, not the leaf vdevs. So we always lookup the
1817 * log device from the root of the vdev tree (where
1818 * 'log' is non-NULL).
1819 */
1820 if (log != NULL &&
1821 nvlist_lookup_uint64(child[c],
1822 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 &&
1823 is_log) {
1824 *log = B_TRUE;
1825 }
34dc7c2f 1826 return (ret);
b128c09f
BB		 1827 }
1828 }
34dc7c2f
BB		 1829
1830 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
1831 &child, &children) == 0) {
1832 for (c = 0; c < children; c++) {
9babb374 1833 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f 1834 avail_spare, l2cache, NULL)) != NULL) {
34dc7c2f
BB		 1835 *avail_spare = B_TRUE;
1836 return (ret);
1837 }
1838 }
1839 }
1840
1841 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
1842 &child, &children) == 0) {
1843 for (c = 0; c < children; c++) {
9babb374 1844 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f 1845 avail_spare, l2cache, NULL)) != NULL) {
34dc7c2f
BB		 1846 *l2cache = B_TRUE;
1847 return (ret);
1848 }
1849 }
1850 }
1851
1852 return (NULL);
1853}
1854
9babb374
BB		 1855/*
1856 * Given a physical path (minus the "/devices" prefix), find the
1857 * associated vdev.
1858 */
1859nvlist_t *
1860zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath,
1861 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log)
1862{
1863 nvlist_t *search, *nvroot, *ret;
1864
1865 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1866 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0);
1867
1868 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
1869 &nvroot) == 0);
1870
1871 *avail_spare = B_FALSE;
572e2857
BB		 1872 *l2cache = B_FALSE;
1873 if (log != NULL)
1874 *log = B_FALSE;
9babb374
BB		 1875 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
1876 nvlist_free(search);
1877
1878 return (ret);
1879}
1880
428870ff
BB		 1881/*
1882 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz).
1883 */
1884boolean_t
1885zpool_vdev_is_interior(const char *name)
1886{
1887 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 ||
1888 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0)
1889 return (B_TRUE);
1890 return (B_FALSE);
1891}
1892
34dc7c2f
BB		 1893nvlist_t *
1894zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare,
b128c09f 1895 boolean_t *l2cache, boolean_t *log)
34dc7c2f
BB		 1896{
1897 char buf[MAXPATHLEN];
34dc7c2f 1898 char *end;
9babb374 1899 nvlist_t *nvroot, *search, *ret;
34dc7c2f
BB		 1900 uint64_t guid;
1901
9babb374
BB		 1902 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1903
34dc7c2f
BB		 1904 guid = strtoull(path, &end, 10);
1905 if (guid != 0 && *end == '\0') {
9babb374 1906 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0);
428870ff
BB		 1907 } else if (zpool_vdev_is_interior(path)) {
1908 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0);
34dc7c2f 1909 } else if (path[0] != '/') {
a2c6816c
NB		 1910 if (zfs_resolve_shortname(path, buf, sizeof (buf)) < 0) {
1911 nvlist_free(search);
1912 return (NULL);
1913 }
9babb374 1914 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0);
34dc7c2f 1915 } else {
9babb374 1916 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0);
34dc7c2f
BB		 1917 }
1918
1919 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
1920 &nvroot) == 0);
1921
1922 *avail_spare = B_FALSE;
1923 *l2cache = B_FALSE;
b128c09f
BB		 1924 if (log != NULL)
1925 *log = B_FALSE;
9babb374
BB		 1926 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
1927 nvlist_free(search);
1928
1929 return (ret);
b128c09f
BB		 1930}
1931
1932static int
1933vdev_online(nvlist_t *nv)
1934{
1935 uint64_t ival;
1936
1937 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 ||
1938 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 ||
1939 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0)
1940 return (0);
1941
1942 return (1);
1943}
1944
1945/*
9babb374 1946 * Helper function for zpool_get_physpaths().
b128c09f 1947 */
9babb374
BB		 1948static int
1949vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size,
1950 size_t *bytes_written)
1951{
1952 size_t bytes_left, pos, rsz;
1953 char *tmppath;
1954 const char *format;
1955
1956 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH,
1957 &tmppath) != 0)
1958 return (EZFS_NODEVICE);
1959
1960 pos = *bytes_written;
1961 bytes_left = physpath_size - pos;
1962 format = (pos == 0) ? "%s" : " %s";
1963
1964 rsz = snprintf(physpath + pos, bytes_left, format, tmppath);
1965 *bytes_written += rsz;
1966
1967 if (rsz >= bytes_left) {
1968 /* if physpath was not copied properly, clear it */
1969 if (bytes_left != 0) {
1970 physpath[pos] = 0;
1971 }
1972 return (EZFS_NOSPC);
1973 }
1974 return (0);
1975}
1976
1977static int
1978vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size,
1979 size_t *rsz, boolean_t is_spare)
1980{
1981 char *type;
1982 int ret;
1983
1984 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0)
1985 return (EZFS_INVALCONFIG);
1986
1987 if (strcmp(type, VDEV_TYPE_DISK) == 0) {
1988 /*
1989 * An active spare device has ZPOOL_CONFIG_IS_SPARE set.
1990 * For a spare vdev, we only want to boot from the active
1991 * spare device.
1992 */
1993 if (is_spare) {
1994 uint64_t spare = 0;
1995 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE,
1996 &spare);
1997 if (!spare)
1998 return (EZFS_INVALCONFIG);
1999 }
2000
2001 if (vdev_online(nv)) {
2002 if ((ret = vdev_get_one_physpath(nv, physpath,
2003 phypath_size, rsz)) != 0)
2004 return (ret);
2005 }
2006 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 ||
2007 strcmp(type, VDEV_TYPE_REPLACING) == 0 ||
2008 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) {
2009 nvlist_t **child;
2010 uint_t count;
2011 int i, ret;
2012
2013 if (nvlist_lookup_nvlist_array(nv,
2014 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0)
2015 return (EZFS_INVALCONFIG);
2016
2017 for (i = 0; i < count; i++) {
2018 ret = vdev_get_physpaths(child[i], physpath,
2019 phypath_size, rsz, is_spare);
2020 if (ret == EZFS_NOSPC)
2021 return (ret);
2022 }
2023 }
2024
2025 return (EZFS_POOL_INVALARG);
2026}
2027
2028/*
2029 * Get phys_path for a root pool config.
2030 * Return 0 on success; non-zero on failure.
2031 */
2032static int
2033zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size)
b128c09f 2034{
9babb374 2035 size_t rsz;
b128c09f
BB		 2036 nvlist_t *vdev_root;
2037 nvlist_t **child;
2038 uint_t count;
9babb374 2039 char *type;
b128c09f 2040
9babb374 2041 rsz = 0;
b128c09f 2042
9babb374
BB		 2043 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2044 &vdev_root) != 0)
2045 return (EZFS_INVALCONFIG);
b128c09f 2046
9babb374
BB		 2047 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 ||
2048 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN,
b128c09f 2049 &child, &count) != 0)
9babb374 2050 return (EZFS_INVALCONFIG);
b128c09f 2051
9babb374
BB		 2052 /*
2053 * root pool can not have EFI labeled disks and can only have
2054 * a single top-level vdev.
2055 */
2056 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1 ||
2057 pool_uses_efi(vdev_root))
2058 return (EZFS_POOL_INVALARG);
b128c09f 2059
9babb374
BB		 2060 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz,
2061 B_FALSE);
2062
2063 /* No online devices */
2064 if (rsz == 0)
2065 return (EZFS_NODEVICE);
b128c09f
BB		 2066
2067 return (0);
34dc7c2f
BB		 2068}
2069
9babb374
BB		 2070/*
2071 * Get phys_path for a root pool
2072 * Return 0 on success; non-zero on failure.
2073 */
2074int
2075zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size)
2076{
2077 return (zpool_get_config_physpath(zhp->zpool_config, physpath,
2078 phypath_size));
2079}
2080
9babb374
BB		 2081/*
2082 * If the device has being dynamically expanded then we need to relabel
2083 * the disk to use the new unallocated space.
2084 */
2085static int
8adf4864 2086zpool_relabel_disk(libzfs_handle_t *hdl, const char *path, const char *msg)
9babb374 2087{
9babb374 2088 int fd, error;
9babb374 2089
d603ed6c 2090 if ((fd = open(path, O_RDWR|O_DIRECT)) < 0) {
9babb374 2091 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
109491a8 2092 "relabel '%s': unable to open device: %d"), path, errno);
8adf4864 2093 return (zfs_error(hdl, EZFS_OPENFAILED, msg));
9babb374
BB		 2094 }
2095
2096 /*
2097 * It's possible that we might encounter an error if the device
2098 * does not have any unallocated space left. If so, we simply
2099 * ignore that error and continue on.
b5a28807
ED		 2100 *
2101 * Also, we don't call efi_rescan() - that would just return EBUSY.
2102 * The module will do it for us in vdev_disk_open().
9babb374 2103 */
d603ed6c 2104 error = efi_use_whole_disk(fd);
9babb374
BB		 2105 (void) close(fd);
2106 if (error && error != VT_ENOSPC) {
2107 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
d603ed6c 2108 "relabel '%s': unable to read disk capacity"), path);
8adf4864 2109 return (zfs_error(hdl, EZFS_NOCAP, msg));
9babb374
BB		 2110 }
2111 return (0);
2112}
2113
34dc7c2f
BB		 2114/*
2115 * Bring the specified vdev online. The 'flags' parameter is a set of the
2116 * ZFS_ONLINE_* flags.
2117 */
2118int
2119zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
2120 vdev_state_t *newstate)
2121{
2598c001 2122 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2123 char msg[1024];
2124 nvlist_t *tgt;
9babb374 2125 boolean_t avail_spare, l2cache, islog;
34dc7c2f 2126 libzfs_handle_t *hdl = zhp->zpool_hdl;
8adf4864 2127 int error;
34dc7c2f 2128
9babb374
BB		 2129 if (flags & ZFS_ONLINE_EXPAND) {
2130 (void) snprintf(msg, sizeof (msg),
2131 dgettext(TEXT_DOMAIN, "cannot expand %s"), path);
2132 } else {
2133 (void) snprintf(msg, sizeof (msg),
2134 dgettext(TEXT_DOMAIN, "cannot online %s"), path);
2135 }
34dc7c2f
BB		 2136
2137 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 2138 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
9babb374 2139 &islog)) == NULL)
34dc7c2f
BB		 2140 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2141
2142 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2143
428870ff 2144 if (avail_spare)
34dc7c2f
BB		 2145 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2146
9babb374
BB		 2147 if (flags & ZFS_ONLINE_EXPAND ||
2148 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) {
9babb374
BB		 2149 uint64_t wholedisk = 0;
2150
2151 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK,
2152 &wholedisk);
9babb374
BB		 2153
2154 /*
2155 * XXX - L2ARC 1.0 devices can't support expansion.
2156 */
2157 if (l2cache) {
2158 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2159 "cannot expand cache devices"));
2160 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg));
2161 }
2162
2163 if (wholedisk) {
7608bd0d
ED		 2164 const char *fullpath = path;
2165 char buf[MAXPATHLEN];
2166
2167 if (path[0] != '/') {
2168 error = zfs_resolve_shortname(path, buf,
2169 sizeof(buf));
2170 if (error != 0)
2171 return (zfs_error(hdl, EZFS_NODEVICE,
2172 msg));
2173
2174 fullpath = buf;
2175 }
2176
2177 error = zpool_relabel_disk(hdl, fullpath, msg);
8adf4864
ED		 2178 if (error != 0)
2179 return (error);
9babb374
BB		 2180 }
2181 }
2182
34dc7c2f
BB		 2183 zc.zc_cookie = VDEV_STATE_ONLINE;
2184 zc.zc_obj = flags;
2185
572e2857 2186 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) {
428870ff
BB		 2187 if (errno == EINVAL) {
2188 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split "
2189 "from this pool into a new one. Use '%s' "
2190 "instead"), "zpool detach");
2191 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg));
2192 }
34dc7c2f 2193 return (zpool_standard_error(hdl, errno, msg));
428870ff 2194 }
34dc7c2f
BB		 2195
2196 *newstate = zc.zc_cookie;
2197 return (0);
2198}
2199
2200/*
2201 * Take the specified vdev offline
2202 */
2203int
2204zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
2205{
2598c001 2206 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2207 char msg[1024];
2208 nvlist_t *tgt;
2209 boolean_t avail_spare, l2cache;
2210 libzfs_handle_t *hdl = zhp->zpool_hdl;
2211
2212 (void) snprintf(msg, sizeof (msg),
2213 dgettext(TEXT_DOMAIN, "cannot offline %s"), path);
2214
2215 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f
BB		 2216 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
2217 NULL)) == NULL)
34dc7c2f
BB		 2218 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2219
2220 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2221
428870ff 2222 if (avail_spare)
34dc7c2f
BB		 2223 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2224
34dc7c2f
BB		 2225 zc.zc_cookie = VDEV_STATE_OFFLINE;
2226 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0;
2227
572e2857 2228 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2229 return (0);
2230
2231 switch (errno) {
2232 case EBUSY:
2233
2234 /*
2235 * There are no other replicas of this device.
2236 */
2237 return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
2238
9babb374
BB		 2239 case EEXIST:
2240 /*
2241 * The log device has unplayed logs
2242 */
2243 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg));
2244
34dc7c2f
BB		 2245 default:
2246 return (zpool_standard_error(hdl, errno, msg));
2247 }
2248}
2249
2250/*
2251 * Mark the given vdev faulted.
2252 */
2253int
428870ff 2254zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
34dc7c2f 2255{
2598c001 2256 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2257 char msg[1024];
2258 libzfs_handle_t *hdl = zhp->zpool_hdl;
2259
2260 (void) snprintf(msg, sizeof (msg),
b8864a23 2261 dgettext(TEXT_DOMAIN, "cannot fault %llu"), (u_longlong_t)guid);
34dc7c2f
BB		 2262
2263 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2264 zc.zc_guid = guid;
2265 zc.zc_cookie = VDEV_STATE_FAULTED;
428870ff 2266 zc.zc_obj = aux;
34dc7c2f 2267
572e2857 2268 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2269 return (0);
2270
2271 switch (errno) {
2272 case EBUSY:
2273
2274 /*
2275 * There are no other replicas of this device.
2276 */
2277 return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
2278
2279 default:
2280 return (zpool_standard_error(hdl, errno, msg));
2281 }
2282
2283}
2284
2285/*
2286 * Mark the given vdev degraded.
2287 */
2288int
428870ff 2289zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
34dc7c2f 2290{
2598c001 2291 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2292 char msg[1024];
2293 libzfs_handle_t *hdl = zhp->zpool_hdl;
2294
2295 (void) snprintf(msg, sizeof (msg),
b8864a23 2296 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), (u_longlong_t)guid);
34dc7c2f
BB		 2297
2298 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2299 zc.zc_guid = guid;
2300 zc.zc_cookie = VDEV_STATE_DEGRADED;
428870ff 2301 zc.zc_obj = aux;
34dc7c2f 2302
572e2857 2303 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2304 return (0);
2305
2306 return (zpool_standard_error(hdl, errno, msg));
2307}
2308
2309/*
2310 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as
2311 * a hot spare.
2312 */
2313static boolean_t
2314is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which)
2315{
2316 nvlist_t **child;
2317 uint_t c, children;
2318 char *type;
2319
2320 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child,
2321 &children) == 0) {
2322 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE,
2323 &type) == 0);
2324
2325 if (strcmp(type, VDEV_TYPE_SPARE) == 0 &&
2326 children == 2 && child[which] == tgt)
2327 return (B_TRUE);
2328
2329 for (c = 0; c < children; c++)
2330 if (is_replacing_spare(child[c], tgt, which))
2331 return (B_TRUE);
2332 }
2333
2334 return (B_FALSE);
2335}
2336
2337/*
2338 * Attach new_disk (fully described by nvroot) to old_disk.
2339 * If 'replacing' is specified, the new disk will replace the old one.
2340 */
2341int
2342zpool_vdev_attach(zpool_handle_t *zhp,
2343 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing)
2344{
2598c001 2345 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2346 char msg[1024];
2347 int ret;
2348 nvlist_t *tgt;
b128c09f
BB		 2349 boolean_t avail_spare, l2cache, islog;
2350 uint64_t val;
572e2857 2351 char *newname;
34dc7c2f
BB		 2352 nvlist_t **child;
2353 uint_t children;
2354 nvlist_t *config_root;
2355 libzfs_handle_t *hdl = zhp->zpool_hdl;
b128c09f 2356 boolean_t rootpool = pool_is_bootable(zhp);
34dc7c2f
BB		 2357
2358 if (replacing)
2359 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2360 "cannot replace %s with %s"), old_disk, new_disk);
2361 else
2362 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2363 "cannot attach %s to %s"), new_disk, old_disk);
2364
b128c09f
BB		 2365 /*
2366 * If this is a root pool, make sure that we're not attaching an
2367 * EFI labeled device.
2368 */
2369 if (rootpool && pool_uses_efi(nvroot)) {
2370 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2371 "EFI labeled devices are not supported on root pools."));
2372 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg));
2373 }
2374
34dc7c2f 2375 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f
BB		 2376 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache,
2377 &islog)) == 0)
34dc7c2f
BB		 2378 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2379
2380 if (avail_spare)
2381 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2382
2383 if (l2cache)
2384 return (zfs_error(hdl, EZFS_ISL2CACHE, msg));
2385
2386 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2387 zc.zc_cookie = replacing;
2388
2389 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
2390 &child, &children) != 0 || children != 1) {
2391 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2392 "new device must be a single disk"));
2393 return (zfs_error(hdl, EZFS_INVALCONFIG, msg));
2394 }
2395
2396 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
2397 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0);
2398
428870ff 2399 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL)
b128c09f
BB		 2400 return (-1);
2401
34dc7c2f
BB		 2402 /*
2403 * If the target is a hot spare that has been swapped in, we can only
2404 * replace it with another hot spare.
2405 */
2406 if (replacing &&
2407 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 &&
b128c09f
BB		 2408 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache,
2409 NULL) == NULL || !avail_spare) &&
2410 is_replacing_spare(config_root, tgt, 1)) {
34dc7c2f
BB		 2411 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2412 "can only be replaced by another hot spare"));
b128c09f 2413 free(newname);
34dc7c2f
BB		 2414 return (zfs_error(hdl, EZFS_BADTARGET, msg));
2415 }
2416
b128c09f
BB		 2417 free(newname);
2418
34dc7c2f
BB		 2419 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
2420 return (-1);
2421
572e2857 2422 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc);
34dc7c2f
BB		 2423
2424 zcmd_free_nvlists(&zc);
2425
b128c09f
BB		 2426 if (ret == 0) {
2427 if (rootpool) {
9babb374
BB		 2428 /*
2429 * XXX need a better way to prevent user from
2430 * booting up a half-baked vdev.
2431 */
2432 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make "
2433 "sure to wait until resilver is done "
2434 "before rebooting.\n"));
b128c09f 2435 }
34dc7c2f 2436 return (0);
b128c09f 2437 }
34dc7c2f
BB		 2438
2439 switch (errno) {
2440 case ENOTSUP:
2441 /*
2442 * Can't attach to or replace this type of vdev.
2443 */
2444 if (replacing) {
572e2857
BB		 2445 uint64_t version = zpool_get_prop_int(zhp,
2446 ZPOOL_PROP_VERSION, NULL);
2447
b128c09f 2448 if (islog)
34dc7c2f
BB		 2449 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2450 "cannot replace a log with a spare"));
572e2857
BB		 2451 else if (version >= SPA_VERSION_MULTI_REPLACE)
2452 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2453 "already in replacing/spare config; wait "
2454 "for completion or use 'zpool detach'"));
34dc7c2f
BB		 2455 else
2456 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2457 "cannot replace a replacing device"));
2458 } else {
2459 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2460 "can only attach to mirrors and top-level "
2461 "disks"));
2462 }
2463 (void) zfs_error(hdl, EZFS_BADTARGET, msg);
2464 break;
2465
2466 case EINVAL:
2467 /*
2468 * The new device must be a single disk.
2469 */
2470 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2471 "new device must be a single disk"));
2472 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg);
2473 break;
2474
2475 case EBUSY:
2476 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"),
2477 new_disk);
2478 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2479 break;
2480
2481 case EOVERFLOW:
2482 /*
2483 * The new device is too small.
2484 */
2485 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2486 "device is too small"));
2487 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2488 break;
2489
2490 case EDOM:
2491 /*
2492 * The new device has a different alignment requirement.
2493 */
2494 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2495 "devices have different sector alignment"));
2496 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2497 break;
2498
2499 case ENAMETOOLONG:
2500 /*
2501 * The resulting top-level vdev spec won't fit in the label.
2502 */
2503 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg);
2504 break;
2505
2506 default:
2507 (void) zpool_standard_error(hdl, errno, msg);
2508 }
2509
2510 return (-1);
2511}
2512
2513/*
2514 * Detach the specified device.
2515 */
2516int
2517zpool_vdev_detach(zpool_handle_t *zhp, const char *path)
2518{
2598c001 2519 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2520 char msg[1024];
2521 nvlist_t *tgt;
2522 boolean_t avail_spare, l2cache;
2523 libzfs_handle_t *hdl = zhp->zpool_hdl;
2524
2525 (void) snprintf(msg, sizeof (msg),
2526 dgettext(TEXT_DOMAIN, "cannot detach %s"), path);
2527
2528 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f
BB		 2529 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
2530 NULL)) == 0)
34dc7c2f
BB		 2531 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2532
2533 if (avail_spare)
2534 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2535
2536 if (l2cache)
2537 return (zfs_error(hdl, EZFS_ISL2CACHE, msg));
2538
2539 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2540
2541 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0)
2542 return (0);
2543
2544 switch (errno) {
2545
2546 case ENOTSUP:
2547 /*
2548 * Can't detach from this type of vdev.
2549 */
2550 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only "
2551 "applicable to mirror and replacing vdevs"));
572e2857 2552 (void) zfs_error(hdl, EZFS_BADTARGET, msg);
34dc7c2f
BB		 2553 break;
2554
2555 case EBUSY:
2556 /*
2557 * There are no other replicas of this device.
2558 */
2559 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg);
2560 break;
2561
2562 default:
2563 (void) zpool_standard_error(hdl, errno, msg);
2564 }
2565
2566 return (-1);
2567}
2568
428870ff
BB		 2569/*
2570 * Find a mirror vdev in the source nvlist.
2571 *
2572 * The mchild array contains a list of disks in one of the top-level mirrors
2573 * of the source pool. The schild array contains a list of disks that the
2574 * user specified on the command line. We loop over the mchild array to
2575 * see if any entry in the schild array matches.
2576 *
2577 * If a disk in the mchild array is found in the schild array, we return
2578 * the index of that entry. Otherwise we return -1.
2579 */
2580static int
2581find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren,
2582 nvlist_t **schild, uint_t schildren)
2583{
2584 uint_t mc;
2585
2586 for (mc = 0; mc < mchildren; mc++) {
2587 uint_t sc;
2588 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp,
2589 mchild[mc], B_FALSE);
2590
2591 for (sc = 0; sc < schildren; sc++) {
2592 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp,
2593 schild[sc], B_FALSE);
2594 boolean_t result = (strcmp(mpath, spath) == 0);
2595
2596 free(spath);
2597 if (result) {
2598 free(mpath);
2599 return (mc);
2600 }
2601 }
2602
2603 free(mpath);
2604 }
2605
2606 return (-1);
2607}
2608
2609/*
2610 * Split a mirror pool. If newroot points to null, then a new nvlist
2611 * is generated and it is the responsibility of the caller to free it.
2612 */
2613int
2614zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot,
2615 nvlist_t *props, splitflags_t flags)
2616{
2598c001 2617 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
428870ff
BB		 2618 char msg[1024];
2619 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL;
2620 nvlist_t **varray = NULL, *zc_props = NULL;
2621 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0;
2622 libzfs_handle_t *hdl = zhp->zpool_hdl;
2623 uint64_t vers;
2624 boolean_t freelist = B_FALSE, memory_err = B_TRUE;
2625 int retval = 0;
2626
2627 (void) snprintf(msg, sizeof (msg),
2628 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name);
2629
2630 if (!zpool_name_valid(hdl, B_FALSE, newname))
2631 return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
2632
2633 if ((config = zpool_get_config(zhp, NULL)) == NULL) {
2634 (void) fprintf(stderr, gettext("Internal error: unable to "
2635 "retrieve pool configuration\n"));
2636 return (-1);
2637 }
2638
2639 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree)
2640 == 0);
2641 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0);
2642
2643 if (props) {
572e2857 2644 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
428870ff 2645 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name,
572e2857 2646 props, vers, flags, msg)) == NULL)
428870ff
BB		 2647 return (-1);
2648 }
2649
2650 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
2651 &children) != 0) {
2652 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2653 "Source pool is missing vdev tree"));
2654 if (zc_props)
2655 nvlist_free(zc_props);
2656 return (-1);
2657 }
2658
2659 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *));
2660 vcount = 0;
2661
2662 if (*newroot == NULL ||
2663 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN,
2664 &newchild, &newchildren) != 0)
2665 newchildren = 0;
2666
2667 for (c = 0; c < children; c++) {
2668 uint64_t is_log = B_FALSE, is_hole = B_FALSE;
2669 char *type;
2670 nvlist_t **mchild, *vdev;
2671 uint_t mchildren;
2672 int entry;
2673
2674 /*
2675 * Unlike cache & spares, slogs are stored in the
2676 * ZPOOL_CONFIG_CHILDREN array. We filter them out here.
2677 */
2678 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
2679 &is_log);
2680 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE,
2681 &is_hole);
2682 if (is_log || is_hole) {
2683 /*
2684 * Create a hole vdev and put it in the config.
2685 */
2686 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0)
2687 goto out;
2688 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE,
2689 VDEV_TYPE_HOLE) != 0)
2690 goto out;
2691 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE,
2692 1) != 0)
2693 goto out;
2694 if (lastlog == 0)
2695 lastlog = vcount;
2696 varray[vcount++] = vdev;
2697 continue;
2698 }
2699 lastlog = 0;
2700 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type)
2701 == 0);
2702 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) {
2703 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2704 "Source pool must be composed only of mirrors\n"));
2705 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
2706 goto out;
2707 }
2708
2709 verify(nvlist_lookup_nvlist_array(child[c],
2710 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
2711
2712 /* find or add an entry for this top-level vdev */
2713 if (newchildren > 0 &&
2714 (entry = find_vdev_entry(zhp, mchild, mchildren,
2715 newchild, newchildren)) >= 0) {
2716 /* We found a disk that the user specified. */
2717 vdev = mchild[entry];
2718 ++found;
2719 } else {
2720 /* User didn't specify a disk for this vdev. */
2721 vdev = mchild[mchildren - 1];
2722 }
2723
2724 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0)
2725 goto out;
2726 }
2727
2728 /* did we find every disk the user specified? */
2729 if (found != newchildren) {
2730 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must "
2731 "include at most one disk from each mirror"));
2732 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
2733 goto out;
2734 }
2735
2736 /* Prepare the nvlist for populating. */
2737 if (*newroot == NULL) {
2738 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0)
2739 goto out;
2740 freelist = B_TRUE;
2741 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE,
2742 VDEV_TYPE_ROOT) != 0)
2743 goto out;
2744 } else {
2745 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0);
2746 }
2747
2748 /* Add all the children we found */
2749 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray,
2750 lastlog == 0 ? vcount : lastlog) != 0)
2751 goto out;
2752
2753 /*
2754 * If we're just doing a dry run, exit now with success.
2755 */
2756 if (flags.dryrun) {
2757 memory_err = B_FALSE;
2758 freelist = B_FALSE;
2759 goto out;
2760 }
2761
2762 /* now build up the config list & call the ioctl */
2763 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0)
2764 goto out;
2765
2766 if (nvlist_add_nvlist(newconfig,
2767 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 ||
2768 nvlist_add_string(newconfig,
2769 ZPOOL_CONFIG_POOL_NAME, newname) != 0 ||
2770 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0)
2771 goto out;
2772
2773 /*
2774 * The new pool is automatically part of the namespace unless we
2775 * explicitly export it.
2776 */
2777 if (!flags.import)
2778 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT;
2779 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2780 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string));
2781 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0)
2782 goto out;
2783 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
2784 goto out;
2785
2786 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) {
2787 retval = zpool_standard_error(hdl, errno, msg);
2788 goto out;
2789 }
2790
2791 freelist = B_FALSE;
2792 memory_err = B_FALSE;
2793
2794out:
2795 if (varray != NULL) {
2796 int v;
2797
2798 for (v = 0; v < vcount; v++)
2799 nvlist_free(varray[v]);
2800 free(varray);
2801 }
2802 zcmd_free_nvlists(&zc);
2803 if (zc_props)
2804 nvlist_free(zc_props);
2805 if (newconfig)
2806 nvlist_free(newconfig);
2807 if (freelist) {
2808 nvlist_free(*newroot);
2809 *newroot = NULL;
2810 }
2811
2812 if (retval != 0)
2813 return (retval);
2814
2815 if (memory_err)
2816 return (no_memory(hdl));
2817
2818 return (0);
2819}
2820
34dc7c2f
BB		 2821/*
2822 * Remove the given device. Currently, this is supported only for hot spares
2823 * and level 2 cache devices.
2824 */
2825int
2826zpool_vdev_remove(zpool_handle_t *zhp, const char *path)
2827{
2598c001 2828 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2829 char msg[1024];
2830 nvlist_t *tgt;
428870ff 2831 boolean_t avail_spare, l2cache, islog;
34dc7c2f 2832 libzfs_handle_t *hdl = zhp->zpool_hdl;
428870ff 2833 uint64_t version;
34dc7c2f
BB		 2834
2835 (void) snprintf(msg, sizeof (msg),
2836 dgettext(TEXT_DOMAIN, "cannot remove %s"), path);
2837
2838 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 2839 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
428870ff 2840 &islog)) == 0)
34dc7c2f 2841 return (zfs_error(hdl, EZFS_NODEVICE, msg));
428870ff
BB		 2842 /*
2843 * XXX - this should just go away.
2844 */
2845 if (!avail_spare && !l2cache && !islog) {
34dc7c2f 2846 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
428870ff
BB		 2847 "only inactive hot spares, cache, top-level, "
2848 "or log devices can be removed"));
34dc7c2f
BB		 2849 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2850 }
2851
428870ff
BB		 2852 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
2853 if (islog && version < SPA_VERSION_HOLES) {
2854 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2855 "pool must be upgrade to support log removal"));
2856 return (zfs_error(hdl, EZFS_BADVERSION, msg));
2857 }
2858
34dc7c2f
BB		 2859 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2860
2861 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0)
2862 return (0);
2863
2864 return (zpool_standard_error(hdl, errno, msg));
2865}
2866
2867/*
2868 * Clear the errors for the pool, or the particular device if specified.
2869 */
2870int
428870ff 2871zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl)
34dc7c2f 2872{
2598c001 2873 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2874 char msg[1024];
2875 nvlist_t *tgt;
428870ff 2876 zpool_rewind_policy_t policy;
34dc7c2f
BB		 2877 boolean_t avail_spare, l2cache;
2878 libzfs_handle_t *hdl = zhp->zpool_hdl;
428870ff 2879 nvlist_t *nvi = NULL;
572e2857 2880 int error;
34dc7c2f
BB		 2881
2882 if (path)
2883 (void) snprintf(msg, sizeof (msg),
2884 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"),
2885 path);
2886 else
2887 (void) snprintf(msg, sizeof (msg),
2888 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"),
2889 zhp->zpool_name);
2890
2891 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2892 if (path) {
2893 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare,
b128c09f 2894 &l2cache, NULL)) == 0)
34dc7c2f
BB		 2895 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2896
2897 /*
2898 * Don't allow error clearing for hot spares. Do allow
2899 * error clearing for l2cache devices.
2900 */
2901 if (avail_spare)
2902 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2903
2904 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID,
2905 &zc.zc_guid) == 0);
2906 }
2907
428870ff
BB		 2908 zpool_get_rewind_policy(rewindnvl, &policy);
2909 zc.zc_cookie = policy.zrp_request;
2910
572e2857 2911 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0)
428870ff
BB		 2912 return (-1);
2913
572e2857 2914 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0)
428870ff
BB		 2915 return (-1);
2916
572e2857
BB		 2917 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 &&
2918 errno == ENOMEM) {
2919 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
2920 zcmd_free_nvlists(&zc);
2921 return (-1);
2922 }
2923 }
2924
2925 if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) &&
428870ff
BB		 2926 errno != EPERM && errno != EACCES)) {
2927 if (policy.zrp_request &
2928 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
2929 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi);
2930 zpool_rewind_exclaim(hdl, zc.zc_name,
2931 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0),
2932 nvi);
2933 nvlist_free(nvi);
2934 }
2935 zcmd_free_nvlists(&zc);
34dc7c2f 2936 return (0);
428870ff 2937 }
34dc7c2f 2938
428870ff 2939 zcmd_free_nvlists(&zc);
34dc7c2f
BB		 2940 return (zpool_standard_error(hdl, errno, msg));
2941}
2942
2943/*
2944 * Similar to zpool_clear(), but takes a GUID (used by fmd).
2945 */
2946int
2947zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid)
2948{
2598c001 2949 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 2950 char msg[1024];
2951 libzfs_handle_t *hdl = zhp->zpool_hdl;
2952
2953 (void) snprintf(msg, sizeof (msg),
2954 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"),
b8864a23 2955 (u_longlong_t)guid);
34dc7c2f
BB		 2956
2957 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2958 zc.zc_guid = guid;
428870ff 2959 zc.zc_cookie = ZPOOL_NO_REWIND;
34dc7c2f
BB		 2960
2961 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0)
2962 return (0);
2963
2964 return (zpool_standard_error(hdl, errno, msg));
2965}
2966
3541dc6d
GA		 2967/*
2968 * Change the GUID for a pool.
2969 */
2970int
2971zpool_reguid(zpool_handle_t *zhp)
2972{
2973 char msg[1024];
2974 libzfs_handle_t *hdl = zhp->zpool_hdl;
2975 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
2976
2977 (void) snprintf(msg, sizeof (msg),
2978 dgettext(TEXT_DOMAIN, "cannot reguid '%s'"), zhp->zpool_name);
2979
2980 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2981 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REGUID, &zc) == 0)
2982 return (0);
2983
2984 return (zpool_standard_error(hdl, errno, msg));
2985}
2986
34dc7c2f
BB		 2987/*
2988 * Convert from a devid string to a path.
2989 */
2990static char *
2991devid_to_path(char *devid_str)
2992{
2993 ddi_devid_t devid;
2994 char *minor;
2995 char *path;
2996 devid_nmlist_t *list = NULL;
2997 int ret;
2998
2999 if (devid_str_decode(devid_str, &devid, &minor) != 0)
3000 return (NULL);
3001
3002 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list);
3003
3004 devid_str_free(minor);
3005 devid_free(devid);
3006
3007 if (ret != 0)
3008 return (NULL);
3009
3010 if ((path = strdup(list[0].devname)) == NULL)
3011 return (NULL);
3012
3013 devid_free_nmlist(list);
3014
3015 return (path);
3016}
3017
3018/*
3019 * Convert from a path to a devid string.
3020 */
3021static char *
3022path_to_devid(const char *path)
3023{
3024 int fd;
3025 ddi_devid_t devid;
3026 char *minor, *ret;
3027
3028 if ((fd = open(path, O_RDONLY)) < 0)
3029 return (NULL);
3030
3031 minor = NULL;
3032 ret = NULL;
3033 if (devid_get(fd, &devid) == 0) {
3034 if (devid_get_minor_name(fd, &minor) == 0)
3035 ret = devid_str_encode(devid, minor);
3036 if (minor != NULL)
3037 devid_str_free(minor);
3038 devid_free(devid);
3039 }
3040 (void) close(fd);
3041
3042 return (ret);
3043}
3044
3045/*
3046 * Issue the necessary ioctl() to update the stored path value for the vdev. We
3047 * ignore any failure here, since a common case is for an unprivileged user to
3048 * type 'zpool status', and we'll display the correct information anyway.
3049 */
3050static void
3051set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path)
3052{
2598c001 3053 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 3054
3055 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3056 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value));
3057 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
3058 &zc.zc_guid) == 0);
3059
3060 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc);
3061}
3062
83c62c93
NB		 3063/*
3064 * Remove partition suffix from a vdev path. Partition suffixes may take three
3065 * forms: "-partX", "pX", or "X", where X is a string of digits. The second
3066 * case only occurs when the suffix is preceded by a digit, i.e. "md0p0" The
3067 * third case only occurs when preceded by a string matching the regular
3068 * expression "^[hs]d[a-z]+", i.e. a scsi or ide disk.
3069 */
3070static char *
3071strip_partition(libzfs_handle_t *hdl, char *path)
3072{
3073 char *tmp = zfs_strdup(hdl, path);
3074 char *part = NULL, *d = NULL;
3075
3076 if ((part = strstr(tmp, "-part")) && part != tmp) {
3077 d = part + 5;
3078 } else if ((part = strrchr(tmp, 'p')) &&
3079 part > tmp + 1 && isdigit(*(part-1))) {
3080 d = part + 1;
3081 } else if ((tmp[0] == 'h' || tmp[0] == 's') && tmp[1] == 'd') {
3082 for (d = &tmp[2]; isalpha(*d); part = ++d);
3083 }
3084 if (part && d && *d != '\0') {
3085 for (; isdigit(*d); d++);
3086 if (*d == '\0')
3087 *part = '\0';
3088 }
3089 return (tmp);
3090}
3091
858219cc
NB		 3092#define PATH_BUF_LEN 64
3093
34dc7c2f
BB		 3094/*
3095 * Given a vdev, return the name to display in iostat. If the vdev has a path,
3096 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type.
3097 * We also check if this is a whole disk, in which case we strip off the
3098 * trailing 's0' slice name.
3099 *
3100 * This routine is also responsible for identifying when disks have been
3101 * reconfigured in a new location. The kernel will have opened the device by
3102 * devid, but the path will still refer to the old location. To catch this, we
3103 * first do a path -> devid translation (which is fast for the common case). If
3104 * the devid matches, we're done. If not, we do a reverse devid -> path
3105 * translation and issue the appropriate ioctl() to update the path of the vdev.
3106 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any
3107 * of these checks.
3108 */
3109char *
428870ff
BB		 3110zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv,
3111 boolean_t verbose)
34dc7c2f 3112{
d603ed6c 3113 char *path, *devid, *type;
34dc7c2f 3114 uint64_t value;
858219cc 3115 char buf[PATH_BUF_LEN];
34dc7c2f
BB		 3116 vdev_stat_t *vs;
3117 uint_t vsc;
3118
3119 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT,
3120 &value) == 0) {
3121 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
3122 &value) == 0);
3123 (void) snprintf(buf, sizeof (buf), "%llu",
3124 (u_longlong_t)value);
3125 path = buf;
3126 } else if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0) {
34dc7c2f
BB		 3127 /*
3128 * If the device is dead (faulted, offline, etc) then don't
3129 * bother opening it. Otherwise we may be forcing the user to
3130 * open a misbehaving device, which can have undesirable
3131 * effects.
3132 */
428870ff 3133 if ((nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
34dc7c2f
BB		 3134 (uint64_t **)&vs, &vsc) != 0 ||
3135 vs->vs_state >= VDEV_STATE_DEGRADED) &&
3136 zhp != NULL &&
3137 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) {
3138 /*
3139 * Determine if the current path is correct.
3140 */
3141 char *newdevid = path_to_devid(path);
3142
3143 if (newdevid == NULL ||
3144 strcmp(devid, newdevid) != 0) {
3145 char *newpath;
3146
3147 if ((newpath = devid_to_path(devid)) != NULL) {
3148 /*
3149 * Update the path appropriately.
3150 */
3151 set_path(zhp, nv, newpath);
3152 if (nvlist_add_string(nv,
3153 ZPOOL_CONFIG_PATH, newpath) == 0)
3154 verify(nvlist_lookup_string(nv,
3155 ZPOOL_CONFIG_PATH,
3156 &path) == 0);
3157 free(newpath);
3158 }
3159 }
3160
3161 if (newdevid)
3162 devid_str_free(newdevid);
3163 }
3164
d603ed6c
BB		 3165 /*
3166 * For a block device only use the name.
3167 */
3168 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0);
3169 if (strcmp(type, VDEV_TYPE_DISK) == 0) {
3170 path = strrchr(path, '/');
3171 path++;
3172 }
34dc7c2f 3173
d603ed6c 3174 /*
83c62c93 3175 * Remove the partition from the path it this is a whole disk.
d603ed6c 3176 */
34dc7c2f
BB		 3177 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
3178 &value) == 0 && value) {
83c62c93 3179 return strip_partition(hdl, path);
34dc7c2f
BB		 3180 }
3181 } else {
3182 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0);
3183
3184 /*
3185 * If it's a raidz device, we need to stick in the parity level.
3186 */
3187 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) {
858219cc
NB		 3188 char tmpbuf[PATH_BUF_LEN];
3189
34dc7c2f
BB		 3190 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY,
3191 &value) == 0);
858219cc 3192 (void) snprintf(tmpbuf, sizeof (tmpbuf), "%s%llu", path,
34dc7c2f 3193 (u_longlong_t)value);
858219cc 3194 path = tmpbuf;
34dc7c2f 3195 }
428870ff
BB		 3196
3197 /*
3198 * We identify each top-level vdev by using a <type-id>
3199 * naming convention.
3200 */
3201 if (verbose) {
3202 uint64_t id;
3203
3204 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
3205 &id) == 0);
3206 (void) snprintf(buf, sizeof (buf), "%s-%llu", path,
3207 (u_longlong_t)id);
3208 path = buf;
3209 }
34dc7c2f
BB		 3210 }
3211
3212 return (zfs_strdup(hdl, path));
3213}
3214
3215static int
3216zbookmark_compare(const void *a, const void *b)
3217{
3218 return (memcmp(a, b, sizeof (zbookmark_t)));
3219}
3220
3221/*
3222 * Retrieve the persistent error log, uniquify the members, and return to the
3223 * caller.
3224 */
3225int
3226zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp)
3227{
2598c001 3228 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 3229 uint64_t count;
3230 zbookmark_t *zb = NULL;
3231 int i;
3232
3233 /*
3234 * Retrieve the raw error list from the kernel. If the number of errors
3235 * has increased, allocate more space and continue until we get the
3236 * entire list.
3237 */
3238 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT,
3239 &count) == 0);
3240 if (count == 0)
3241 return (0);
3242 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl,
3243 count * sizeof (zbookmark_t))) == (uintptr_t)NULL)
3244 return (-1);
3245 zc.zc_nvlist_dst_size = count;
3246 (void) strcpy(zc.zc_name, zhp->zpool_name);
3247 for (;;) {
3248 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG,
3249 &zc) != 0) {
3250 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3251 if (errno == ENOMEM) {
3252 count = zc.zc_nvlist_dst_size;
3253 if ((zc.zc_nvlist_dst = (uintptr_t)
3254 zfs_alloc(zhp->zpool_hdl, count *
3255 sizeof (zbookmark_t))) == (uintptr_t)NULL)
3256 return (-1);
3257 } else {
3258 return (-1);
3259 }
3260 } else {
3261 break;
3262 }
3263 }
3264
3265 /*
3266 * Sort the resulting bookmarks. This is a little confusing due to the
3267 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last
3268 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks
3269 * _not_ copied as part of the process. So we point the start of our
3270 * array appropriate and decrement the total number of elements.
3271 */
3272 zb = ((zbookmark_t *)(uintptr_t)zc.zc_nvlist_dst) +
3273 zc.zc_nvlist_dst_size;
3274 count -= zc.zc_nvlist_dst_size;
3275
3276 qsort(zb, count, sizeof (zbookmark_t), zbookmark_compare);
3277
3278 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0);
3279
3280 /*
3281 * Fill in the nverrlistp with nvlist's of dataset and object numbers.
3282 */
3283 for (i = 0; i < count; i++) {
3284 nvlist_t *nv;
3285
3286 /* ignoring zb_blkid and zb_level for now */
3287 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset &&
3288 zb[i-1].zb_object == zb[i].zb_object)
3289 continue;
3290
3291 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0)
3292 goto nomem;
3293 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET,
3294 zb[i].zb_objset) != 0) {
3295 nvlist_free(nv);
3296 goto nomem;
3297 }
3298 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT,
3299 zb[i].zb_object) != 0) {
3300 nvlist_free(nv);
3301 goto nomem;
3302 }
3303 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) {
3304 nvlist_free(nv);
3305 goto nomem;
3306 }
3307 nvlist_free(nv);
3308 }
3309
3310 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3311 return (0);
3312
3313nomem:
3314 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3315 return (no_memory(zhp->zpool_hdl));
3316}
3317
3318/*
3319 * Upgrade a ZFS pool to the latest on-disk version.
3320 */
3321int
3322zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version)
3323{
2598c001 3324 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 3325 libzfs_handle_t *hdl = zhp->zpool_hdl;
3326
3327 (void) strcpy(zc.zc_name, zhp->zpool_name);
3328 zc.zc_cookie = new_version;
3329
3330 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0)
3331 return (zpool_standard_error_fmt(hdl, errno,
3332 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"),
3333 zhp->zpool_name));
3334 return (0);
3335}
3336
3337void
3338zpool_set_history_str(const char *subcommand, int argc, char **argv,
3339 char *history_str)
3340{
3341 int i;
3342
3343 (void) strlcpy(history_str, subcommand, HIS_MAX_RECORD_LEN);
3344 for (i = 1; i < argc; i++) {
3345 if (strlen(history_str) + 1 + strlen(argv[i]) >
3346 HIS_MAX_RECORD_LEN)
3347 break;
3348 (void) strlcat(history_str, " ", HIS_MAX_RECORD_LEN);
3349 (void) strlcat(history_str, argv[i], HIS_MAX_RECORD_LEN);
3350 }
3351}
3352
3353/*
3354 * Stage command history for logging.
3355 */
3356int
3357zpool_stage_history(libzfs_handle_t *hdl, const char *history_str)
3358{
3359 if (history_str == NULL)
3360 return (EINVAL);
3361
3362 if (strlen(history_str) > HIS_MAX_RECORD_LEN)
3363 return (EINVAL);
3364
3365 if (hdl->libzfs_log_str != NULL)
3366 free(hdl->libzfs_log_str);
3367
3368 if ((hdl->libzfs_log_str = strdup(history_str)) == NULL)
3369 return (no_memory(hdl));
3370
3371 return (0);
3372}
3373
3374/*
3375 * Perform ioctl to get some command history of a pool.
3376 *
3377 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the
3378 * logical offset of the history buffer to start reading from.
3379 *
3380 * Upon return, 'off' is the next logical offset to read from and
3381 * 'len' is the actual amount of bytes read into 'buf'.
3382 */
3383static int
3384get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len)
3385{
2598c001 3386 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 3387 libzfs_handle_t *hdl = zhp->zpool_hdl;
3388
3389 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3390
3391 zc.zc_history = (uint64_t)(uintptr_t)buf;
3392 zc.zc_history_len = *len;
3393 zc.zc_history_offset = *off;
3394
3395 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) {
3396 switch (errno) {
3397 case EPERM:
3398 return (zfs_error_fmt(hdl, EZFS_PERM,
3399 dgettext(TEXT_DOMAIN,
3400 "cannot show history for pool '%s'"),
3401 zhp->zpool_name));
3402 case ENOENT:
3403 return (zfs_error_fmt(hdl, EZFS_NOHISTORY,
3404 dgettext(TEXT_DOMAIN, "cannot get history for pool "
3405 "'%s'"), zhp->zpool_name));
3406 case ENOTSUP:
3407 return (zfs_error_fmt(hdl, EZFS_BADVERSION,
3408 dgettext(TEXT_DOMAIN, "cannot get history for pool "
3409 "'%s', pool must be upgraded"), zhp->zpool_name));
3410 default:
3411 return (zpool_standard_error_fmt(hdl, errno,
3412 dgettext(TEXT_DOMAIN,
3413 "cannot get history for '%s'"), zhp->zpool_name));
3414 }
3415 }
3416
3417 *len = zc.zc_history_len;
3418 *off = zc.zc_history_offset;
3419
3420 return (0);
3421}
3422
3423/*
3424 * Process the buffer of nvlists, unpacking and storing each nvlist record
3425 * into 'records'. 'leftover' is set to the number of bytes that weren't
3426 * processed as there wasn't a complete record.
3427 */
428870ff 3428int
34dc7c2f
BB		 3429zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover,
3430 nvlist_t ***records, uint_t *numrecords)
3431{
3432 uint64_t reclen;
3433 nvlist_t *nv;
3434 int i;
3435
3436 while (bytes_read > sizeof (reclen)) {
3437
3438 /* get length of packed record (stored as little endian) */
3439 for (i = 0, reclen = 0; i < sizeof (reclen); i++)
3440 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i);
3441
3442 if (bytes_read < sizeof (reclen) + reclen)
3443 break;
3444
3445 /* unpack record */
3446 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0)
3447 return (ENOMEM);
3448 bytes_read -= sizeof (reclen) + reclen;
3449 buf += sizeof (reclen) + reclen;
3450
3451 /* add record to nvlist array */
3452 (*numrecords)++;
3453 if (ISP2(*numrecords + 1)) {
3454 *records = realloc(*records,
3455 *numrecords * 2 * sizeof (nvlist_t *));
3456 }
3457 (*records)[*numrecords - 1] = nv;
3458 }
3459
3460 *leftover = bytes_read;
3461 return (0);
3462}
3463
3464#define HIS_BUF_LEN (128*1024)
3465
3466/*
3467 * Retrieve the command history of a pool.
3468 */
3469int
3470zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp)
3471{
3472 char buf[HIS_BUF_LEN];
3473 uint64_t off = 0;
3474 nvlist_t **records = NULL;
3475 uint_t numrecords = 0;
3476 int err, i;
3477
3478 do {
3479 uint64_t bytes_read = sizeof (buf);
3480 uint64_t leftover;
3481
3482 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0)
3483 break;
3484
3485 /* if nothing else was read in, we're at EOF, just return */
3486 if (!bytes_read)
3487 break;
3488
3489 if ((err = zpool_history_unpack(buf, bytes_read,
3490 &leftover, &records, &numrecords)) != 0)
3491 break;
3492 off -= leftover;
3493
3494 /* CONSTCOND */
3495 } while (1);
3496
3497 if (!err) {
3498 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0);
3499 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD,
3500 records, numrecords) == 0);
3501 }
3502 for (i = 0; i < numrecords; i++)
3503 nvlist_free(records[i]);
3504 free(records);
3505
3506 return (err);
3507}
3508
26685276
BB		 3509/*
3510 * Retrieve the next event. If there is a new event available 'nvp' will
3511 * contain a newly allocated nvlist and 'dropped' will be set to the number
3512 * of missed events since the last call to this function. When 'nvp' is
3513 * set to NULL it indicates no new events are available. In either case
3514 * the function returns 0 and it is up to the caller to free 'nvp'. In
3515 * the case of a fatal error the function will return a non-zero value.
3516 * When the function is called in blocking mode it will not return until
3517 * a new event is available.
3518 */
3519int
3520zpool_events_next(libzfs_handle_t *hdl, nvlist_t **nvp,
3521 int *dropped, int block, int cleanup_fd)
3522{
3523 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
3524 int error = 0;
3525
3526 *nvp = NULL;
3527 *dropped = 0;
3528 zc.zc_cleanup_fd = cleanup_fd;
3529
3530 if (!block)
3531 zc.zc_guid = ZEVENT_NONBLOCK;
3532
3533 if (zcmd_alloc_dst_nvlist(hdl, &zc, ZEVENT_SIZE) != 0)
3534 return (-1);
3535
3536retry:
3537 if (zfs_ioctl(hdl, ZFS_IOC_EVENTS_NEXT, &zc) != 0) {
3538 switch (errno) {
3539 case ESHUTDOWN:
3540 error = zfs_error_fmt(hdl, EZFS_POOLUNAVAIL,
3541 dgettext(TEXT_DOMAIN, "zfs shutdown"));
3542 goto out;
3543 case ENOENT:
3544 /* Blocking error case should not occur */
3545 if (block)
3546 error = zpool_standard_error_fmt(hdl, errno,
3547 dgettext(TEXT_DOMAIN, "cannot get event"));
3548
3549 goto out;
3550 case ENOMEM:
3551 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
3552 error = zfs_error_fmt(hdl, EZFS_NOMEM,
3553 dgettext(TEXT_DOMAIN, "cannot get event"));
3554 goto out;
3555 } else {
3556 goto retry;
3557 }
3558 default:
3559 error = zpool_standard_error_fmt(hdl, errno,
3560 dgettext(TEXT_DOMAIN, "cannot get event"));
3561 goto out;
3562 }
3563 }
3564
3565 error = zcmd_read_dst_nvlist(hdl, &zc, nvp);
3566 if (error != 0)
3567 goto out;
3568
3569 *dropped = (int)zc.zc_cookie;
3570out:
3571 zcmd_free_nvlists(&zc);
3572
3573 return (error);
3574}
3575
3576/*
3577 * Clear all events.
3578 */
3579int
3580zpool_events_clear(libzfs_handle_t *hdl, int *count)
3581{
3582 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
3583 char msg[1024];
3584
3585 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
3586 "cannot clear events"));
3587
3588 if (zfs_ioctl(hdl, ZFS_IOC_EVENTS_CLEAR, &zc) != 0)
3589 return (zpool_standard_error_fmt(hdl, errno, msg));
3590
3591 if (count != NULL)
3592 *count = (int)zc.zc_cookie; /* # of events cleared */
3593
3594 return (0);
3595}
3596
34dc7c2f
BB		 3597void
3598zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj,
3599 char *pathname, size_t len)
3600{
2598c001 3601 zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 };
34dc7c2f
BB		 3602 boolean_t mounted = B_FALSE;
3603 char *mntpnt = NULL;
3604 char dsname[MAXNAMELEN];
3605
3606 if (dsobj == 0) {
3607 /* special case for the MOS */
b8864a23 3608 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", (longlong_t)obj);
34dc7c2f
BB		 3609 return;
3610 }
3611
3612 /* get the dataset's name */
3613 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3614 zc.zc_obj = dsobj;
3615 if (ioctl(zhp->zpool_hdl->libzfs_fd,
3616 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) {
3617 /* just write out a path of two object numbers */
3618 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>",
b8864a23 3619 (longlong_t)dsobj, (longlong_t)obj);
34dc7c2f
BB		 3620 return;
3621 }
3622 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname));
3623
3624 /* find out if the dataset is mounted */
3625 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt);
3626
3627 /* get the corrupted object's path */
3628 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name));
3629 zc.zc_obj = obj;
3630 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH,
3631 &zc) == 0) {
3632 if (mounted) {
3633 (void) snprintf(pathname, len, "%s%s", mntpnt,
3634 zc.zc_value);
3635 } else {
3636 (void) snprintf(pathname, len, "%s:%s",
3637 dsname, zc.zc_value);
3638 }
3639 } else {
b8864a23 3640 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, (longlong_t)obj);
34dc7c2f
BB		 3641 }
3642 free(mntpnt);
3643}
3644
b128c09f
BB		 3645/*
3646 * Read the EFI label from the config, if a label does not exist then
3647 * pass back the error to the caller. If the caller has passed a non-NULL
3648 * diskaddr argument then we set it to the starting address of the EFI
3649 * partition.
3650 */
3651static int
3652read_efi_label(nvlist_t *config, diskaddr_t *sb)
3653{
3654 char *path;
3655 int fd;
3656 char diskname[MAXPATHLEN];
3657 int err = -1;
3658
3659 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0)
3660 return (err);
3661
3662 (void) snprintf(diskname, sizeof (diskname), "%s%s", RDISK_ROOT,
3663 strrchr(path, '/'));
d603ed6c 3664 if ((fd = open(diskname, O_RDWR|O_DIRECT)) >= 0) {
b128c09f
BB		 3665 struct dk_gpt *vtoc;
3666
3667 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) {
3668 if (sb != NULL)
3669 *sb = vtoc->efi_parts[0].p_start;
3670 efi_free(vtoc);
3671 }
3672 (void) close(fd);
3673 }
3674 return (err);
3675}
3676
34dc7c2f
BB		 3677/*
3678 * determine where a partition starts on a disk in the current
3679 * configuration
3680 */
3681static diskaddr_t
3682find_start_block(nvlist_t *config)
3683{
3684 nvlist_t **child;
3685 uint_t c, children;
34dc7c2f 3686 diskaddr_t sb = MAXOFFSET_T;
34dc7c2f
BB		 3687 uint64_t wholedisk;
3688
3689 if (nvlist_lookup_nvlist_array(config,
3690 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) {
3691 if (nvlist_lookup_uint64(config,
3692 ZPOOL_CONFIG_WHOLE_DISK,
3693 &wholedisk) != 0 || !wholedisk) {
3694 return (MAXOFFSET_T);
3695 }
b128c09f
BB		 3696 if (read_efi_label(config, &sb) < 0)
3697 sb = MAXOFFSET_T;
34dc7c2f
BB		 3698 return (sb);
3699 }
3700
3701 for (c = 0; c < children; c++) {
3702 sb = find_start_block(child[c]);
3703 if (sb != MAXOFFSET_T) {
3704 return (sb);
3705 }
3706 }
3707 return (MAXOFFSET_T);
3708}
3709
d603ed6c
BB		 3710int
3711zpool_label_disk_wait(char *path, int timeout)
3712{
3713 struct stat64 statbuf;
3714 int i;
3715
3716 /*
3717 * Wait timeout miliseconds for a newly created device to be available
3718 * from the given path. There is a small window when a /dev/ device
3719 * will exist and the udev link will not, so we must wait for the
3720 * symlink. Depending on the udev rules this may take a few seconds.
3721 */
3722 for (i = 0; i < timeout; i++) {
3723 usleep(1000);
3724
3725 errno = 0;
3726 if ((stat64(path, &statbuf) == 0) && (errno == 0))
3727 return (0);
3728 }
3729
3730 return (ENOENT);
3731}
3732
3733int
3734zpool_label_disk_check(char *path)
3735{
3736 struct dk_gpt *vtoc;
3737 int fd, err;
3738
3739 if ((fd = open(path, O_RDWR|O_DIRECT)) < 0)
3740 return errno;
3741
3742 if ((err = efi_alloc_and_read(fd, &vtoc)) != 0) {
3743 (void) close(fd);
3744 return err;
3745 }
3746
3747 if (vtoc->efi_flags & EFI_GPT_PRIMARY_CORRUPT) {
3748 efi_free(vtoc);
3749 (void) close(fd);
3750 return EIDRM;
3751 }
3752
3753 efi_free(vtoc);
3754 (void) close(fd);
3755 return 0;
3756}
3757
34dc7c2f
BB		 3758/*
3759 * Label an individual disk. The name provided is the short name,
3760 * stripped of any leading /dev path.
3761 */
3762int
3763zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, char *name)
3764{
3765 char path[MAXPATHLEN];
3766 struct dk_gpt *vtoc;
d603ed6c 3767 int rval, fd;
34dc7c2f
BB		 3768 size_t resv = EFI_MIN_RESV_SIZE;
3769 uint64_t slice_size;
3770 diskaddr_t start_block;
3771 char errbuf[1024];
3772
3773 /* prepare an error message just in case */
3774 (void) snprintf(errbuf, sizeof (errbuf),
3775 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name);
3776
3777 if (zhp) {
3778 nvlist_t *nvroot;
3779
b128c09f
BB		 3780 if (pool_is_bootable(zhp)) {
3781 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3782 "EFI labeled devices are not supported on root "
3783 "pools."));
3784 return (zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf));
3785 }
3786
34dc7c2f
BB		 3787 verify(nvlist_lookup_nvlist(zhp->zpool_config,
3788 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
3789
3790 if (zhp->zpool_start_block == 0)
3791 start_block = find_start_block(nvroot);
3792 else
3793 start_block = zhp->zpool_start_block;
3794 zhp->zpool_start_block = start_block;
3795 } else {
3796 /* new pool */
3797 start_block = NEW_START_BLOCK;
3798 }
3799
3800 (void) snprintf(path, sizeof (path), "%s/%s%s", RDISK_ROOT, name,
3801 BACKUP_SLICE);
3802
d603ed6c 3803 if ((fd = open(path, O_RDWR|O_DIRECT)) < 0) {
34dc7c2f
BB		 3804 /*
3805 * This shouldn't happen. We've long since verified that this
3806 * is a valid device.
3807 */
109491a8
RL		 3808 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
3809 "label '%s': unable to open device: %d"), path, errno);
34dc7c2f
BB		 3810 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf));
3811 }
3812
3813 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) {
3814 /*
3815 * The only way this can fail is if we run out of memory, or we
3816 * were unable to read the disk's capacity
3817 */
3818 if (errno == ENOMEM)
3819 (void) no_memory(hdl);
3820
3821 (void) close(fd);
109491a8
RL		 3822 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
3823 "label '%s': unable to read disk capacity"), path);
34dc7c2f
BB		 3824
3825 return (zfs_error(hdl, EZFS_NOCAP, errbuf));
3826 }
3827
3828 slice_size = vtoc->efi_last_u_lba + 1;
3829 slice_size -= EFI_MIN_RESV_SIZE;
3830 if (start_block == MAXOFFSET_T)
3831 start_block = NEW_START_BLOCK;
3832 slice_size -= start_block;
613d88ed 3833 slice_size = P2ALIGN(slice_size, PARTITION_END_ALIGNMENT);
34dc7c2f
BB		 3834
3835 vtoc->efi_parts[0].p_start = start_block;
3836 vtoc->efi_parts[0].p_size = slice_size;
3837
3838 /*
3839 * Why we use V_USR: V_BACKUP confuses users, and is considered
3840 * disposable by some EFI utilities (since EFI doesn't have a backup
3841 * slice). V_UNASSIGNED is supposed to be used only for zero size
3842 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT,
3843 * etc. were all pretty specific. V_USR is as close to reality as we
3844 * can get, in the absence of V_OTHER.
3845 */
3846 vtoc->efi_parts[0].p_tag = V_USR;
3847 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs");
3848
3849 vtoc->efi_parts[8].p_start = slice_size + start_block;
3850 vtoc->efi_parts[8].p_size = resv;
3851 vtoc->efi_parts[8].p_tag = V_RESERVED;
3852
b5a28807 3853 if ((rval = efi_write(fd, vtoc)) != 0 || (rval = efi_rescan(fd)) != 0) {
34dc7c2f
BB		 3854 /*
3855 * Some block drivers (like pcata) may not support EFI
3856 * GPT labels. Print out a helpful error message dir-
3857 * ecting the user to manually label the disk and give
3858 * a specific slice.
3859 */
3860 (void) close(fd);
3861 efi_free(vtoc);
3862
d603ed6c
BB		 3863 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "try using "
3864 "parted(8) and then provide a specific slice: %d"), rval);
34dc7c2f
BB		 3865 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf));
3866 }
3867
3868 (void) close(fd);
3869 efi_free(vtoc);
34dc7c2f 3870
d603ed6c
BB		 3871 /* Wait for the first expected slice to appear. */
3872 (void) snprintf(path, sizeof (path), "%s/%s%s%s", DISK_ROOT, name,
3873 isdigit(name[strlen(name)-1]) ? "p" : "", FIRST_SLICE);
3874 rval = zpool_label_disk_wait(path, 3000);
3875 if (rval) {
3876 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "failed to "
3877 "detect device partitions on '%s': %d"), path, rval);
3878 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf));
34dc7c2f
BB		 3879 }
3880
d603ed6c
BB		 3881 /* We can't be to paranoid. Read the label back and verify it. */
3882 (void) snprintf(path, sizeof (path), "%s/%s", DISK_ROOT, name);
3883 rval = zpool_label_disk_check(path);
3884 if (rval) {
3885 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "freshly written "
3886 "EFI label on '%s' is damaged. Ensure\nthis device "
3887 "is not in in use, and is functioning properly: %d"),
3888 path, rval);
3889 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf));
34dc7c2f 3890 }
34dc7c2f 3891
d603ed6c 3892 return 0;
34dc7c2f 3893}
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