1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
24 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
25 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
26 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
27 */
28
29 #include <sys/types.h>
30 #include <sys/stat.h>
31 #include <ctype.h>
32 #include <errno.h>
33 #include <devid.h>
34 #include <fcntl.h>
35 #include <libintl.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <strings.h>
39 #include <unistd.h>
40 #include <libgen.h>
41 #include <sys/zfs_ioctl.h>
42 #include <dlfcn.h>
43
44 #include "zfs_namecheck.h"
45 #include "zfs_prop.h"
46 #include "libzfs_impl.h"
47 #include "zfs_comutil.h"
48 #include "zfeature_common.h"
49
50 static int read_efi_label(nvlist_t *config, diskaddr_t *sb);
51
52 #define DISK_ROOT "/dev/dsk"
53 #define RDISK_ROOT "/dev/rdsk"
54 #define BACKUP_SLICE "s2"
55
56 typedef struct prop_flags {
57 int create:1; /* Validate property on creation */
58 int import:1; /* Validate property on import */
59 } prop_flags_t;
60
61 /*
62 * ====================================================================
63 * zpool property functions
64 * ====================================================================
65 */
66
67 static int
zpool_get_all_props(zpool_handle_t * zhp)68 zpool_get_all_props(zpool_handle_t *zhp)
69 {
70 zfs_cmd_t zc = { 0 };
71 libzfs_handle_t *hdl = zhp->zpool_hdl;
72
73 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
74
75 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
76 return (-1);
77
78 while (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) {
79 if (errno == ENOMEM) {
80 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
81 zcmd_free_nvlists(&zc);
82 return (-1);
83 }
84 } else {
85 zcmd_free_nvlists(&zc);
86 return (-1);
87 }
88 }
89
90 if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zpool_props) != 0) {
91 zcmd_free_nvlists(&zc);
92 return (-1);
93 }
94
95 zcmd_free_nvlists(&zc);
96
97 return (0);
98 }
99
100 static int
zpool_props_refresh(zpool_handle_t * zhp)101 zpool_props_refresh(zpool_handle_t *zhp)
102 {
103 nvlist_t *old_props;
104
105 old_props = zhp->zpool_props;
106
107 if (zpool_get_all_props(zhp) != 0)
108 return (-1);
109
110 nvlist_free(old_props);
111 return (0);
112 }
113
114 static char *
zpool_get_prop_string(zpool_handle_t * zhp,zpool_prop_t prop,zprop_source_t * src)115 zpool_get_prop_string(zpool_handle_t *zhp, zpool_prop_t prop,
116 zprop_source_t *src)
117 {
118 nvlist_t *nv, *nvl;
119 uint64_t ival;
120 char *value;
121 zprop_source_t source;
122
123 nvl = zhp->zpool_props;
124 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) {
125 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &ival) == 0);
126 source = ival;
127 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0);
128 } else {
129 source = ZPROP_SRC_DEFAULT;
130 if ((value = (char *)zpool_prop_default_string(prop)) == NULL)
131 value = "-";
132 }
133
134 if (src)
135 *src = source;
136
137 return (value);
138 }
139
140 uint64_t
zpool_get_prop_int(zpool_handle_t * zhp,zpool_prop_t prop,zprop_source_t * src)141 zpool_get_prop_int(zpool_handle_t *zhp, zpool_prop_t prop, zprop_source_t *src)
142 {
143 nvlist_t *nv, *nvl;
144 uint64_t value;
145 zprop_source_t source;
146
147 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp)) {
148 /*
149 * zpool_get_all_props() has most likely failed because
150 * the pool is faulted, but if all we need is the top level
151 * vdev's guid then get it from the zhp config nvlist.
152 */
153 if ((prop == ZPOOL_PROP_GUID) &&
154 (nvlist_lookup_nvlist(zhp->zpool_config,
155 ZPOOL_CONFIG_VDEV_TREE, &nv) == 0) &&
156 (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value)
157 == 0)) {
158 return (value);
159 }
160 return (zpool_prop_default_numeric(prop));
161 }
162
163 nvl = zhp->zpool_props;
164 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) {
165 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &value) == 0);
166 source = value;
167 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0);
168 } else {
169 source = ZPROP_SRC_DEFAULT;
170 value = zpool_prop_default_numeric(prop);
171 }
172
173 if (src)
174 *src = source;
175
176 return (value);
177 }
178
179 /*
180 * Map VDEV STATE to printed strings.
181 */
182 const char *
zpool_state_to_name(vdev_state_t state,vdev_aux_t aux)183 zpool_state_to_name(vdev_state_t state, vdev_aux_t aux)
184 {
185 switch (state) {
186 case VDEV_STATE_CLOSED:
187 case VDEV_STATE_OFFLINE:
188 return (gettext("OFFLINE"));
189 case VDEV_STATE_REMOVED:
190 return (gettext("REMOVED"));
191 case VDEV_STATE_CANT_OPEN:
192 if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG)
193 return (gettext("FAULTED"));
194 else if (aux == VDEV_AUX_SPLIT_POOL)
195 return (gettext("SPLIT"));
196 else
197 return (gettext("UNAVAIL"));
198 case VDEV_STATE_FAULTED:
199 return (gettext("FAULTED"));
200 case VDEV_STATE_DEGRADED:
201 return (gettext("DEGRADED"));
202 case VDEV_STATE_HEALTHY:
203 return (gettext("ONLINE"));
204 }
205
206 return (gettext("UNKNOWN"));
207 }
208
209 /*
210 * Map POOL STATE to printed strings.
211 */
212 const char *
zpool_pool_state_to_name(pool_state_t state)213 zpool_pool_state_to_name(pool_state_t state)
214 {
215 switch (state) {
216 case POOL_STATE_ACTIVE:
217 return (gettext("ACTIVE"));
218 case POOL_STATE_EXPORTED:
219 return (gettext("EXPORTED"));
220 case POOL_STATE_DESTROYED:
221 return (gettext("DESTROYED"));
222 case POOL_STATE_SPARE:
223 return (gettext("SPARE"));
224 case POOL_STATE_L2CACHE:
225 return (gettext("L2CACHE"));
226 case POOL_STATE_UNINITIALIZED:
227 return (gettext("UNINITIALIZED"));
228 case POOL_STATE_UNAVAIL:
229 return (gettext("UNAVAIL"));
230 case POOL_STATE_POTENTIALLY_ACTIVE:
231 return (gettext("POTENTIALLY_ACTIVE"));
232 }
233
234 return (gettext("UNKNOWN"));
235 }
236
237 /*
238 * Get a zpool property value for 'prop' and return the value in
239 * a pre-allocated buffer.
240 */
241 int
zpool_get_prop(zpool_handle_t * zhp,zpool_prop_t prop,char * buf,size_t len,zprop_source_t * srctype,boolean_t literal)242 zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len,
243 zprop_source_t *srctype, boolean_t literal)
244 {
245 uint64_t intval;
246 const char *strval;
247 zprop_source_t src = ZPROP_SRC_NONE;
248 nvlist_t *nvroot;
249 vdev_stat_t *vs;
250 uint_t vsc;
251
252 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) {
253 switch (prop) {
254 case ZPOOL_PROP_NAME:
255 (void) strlcpy(buf, zpool_get_name(zhp), len);
256 break;
257
258 case ZPOOL_PROP_HEALTH:
259 (void) strlcpy(buf,
260 zpool_pool_state_to_name(POOL_STATE_UNAVAIL), len);
261 break;
262
263 case ZPOOL_PROP_GUID:
264 intval = zpool_get_prop_int(zhp, prop, &src);
265 (void) snprintf(buf, len, "%llu", intval);
266 break;
267
268 case ZPOOL_PROP_ALTROOT:
269 case ZPOOL_PROP_CACHEFILE:
270 case ZPOOL_PROP_COMMENT:
271 if (zhp->zpool_props != NULL ||
272 zpool_get_all_props(zhp) == 0) {
273 (void) strlcpy(buf,
274 zpool_get_prop_string(zhp, prop, &src),
275 len);
276 break;
277 }
278 /* FALLTHROUGH */
279 default:
280 (void) strlcpy(buf, "-", len);
281 break;
282 }
283
284 if (srctype != NULL)
285 *srctype = src;
286 return (0);
287 }
288
289 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) &&
290 prop != ZPOOL_PROP_NAME)
291 return (-1);
292
293 switch (zpool_prop_get_type(prop)) {
294 case PROP_TYPE_STRING:
295 (void) strlcpy(buf, zpool_get_prop_string(zhp, prop, &src),
296 len);
297 break;
298
299 case PROP_TYPE_NUMBER:
300 intval = zpool_get_prop_int(zhp, prop, &src);
301
302 switch (prop) {
303 case ZPOOL_PROP_SIZE:
304 case ZPOOL_PROP_ALLOCATED:
305 case ZPOOL_PROP_FREE:
306 case ZPOOL_PROP_FREEING:
307 case ZPOOL_PROP_LEAKED:
308 if (literal) {
309 (void) snprintf(buf, len, "%llu",
310 (u_longlong_t)intval);
311 } else {
312 (void) zfs_nicenum(intval, buf, len);
313 }
314 break;
315 case ZPOOL_PROP_EXPANDSZ:
316 if (intval == 0) {
317 (void) strlcpy(buf, "-", len);
318 } else if (literal) {
319 (void) snprintf(buf, len, "%llu",
320 (u_longlong_t)intval);
321 } else {
322 (void) zfs_nicenum(intval, buf, len);
323 }
324 break;
325 case ZPOOL_PROP_CAPACITY:
326 if (literal) {
327 (void) snprintf(buf, len, "%llu",
328 (u_longlong_t)intval);
329 } else {
330 (void) snprintf(buf, len, "%llu%%",
331 (u_longlong_t)intval);
332 }
333 break;
334 case ZPOOL_PROP_FRAGMENTATION:
335 if (intval == UINT64_MAX) {
336 (void) strlcpy(buf, "-", len);
337 } else {
338 (void) snprintf(buf, len, "%llu%%",
339 (u_longlong_t)intval);
340 }
341 break;
342 case ZPOOL_PROP_DEDUPRATIO:
343 (void) snprintf(buf, len, "%llu.%02llux",
344 (u_longlong_t)(intval / 100),
345 (u_longlong_t)(intval % 100));
346 break;
347 case ZPOOL_PROP_HEALTH:
348 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
349 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
350 verify(nvlist_lookup_uint64_array(nvroot,
351 ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc)
352 == 0);
353
354 (void) strlcpy(buf, zpool_state_to_name(intval,
355 vs->vs_aux), len);
356 break;
357 case ZPOOL_PROP_VERSION:
358 if (intval >= SPA_VERSION_FEATURES) {
359 (void) snprintf(buf, len, "-");
360 break;
361 }
362 /* FALLTHROUGH */
363 default:
364 (void) snprintf(buf, len, "%llu", intval);
365 }
366 break;
367
368 case PROP_TYPE_INDEX:
369 intval = zpool_get_prop_int(zhp, prop, &src);
370 if (zpool_prop_index_to_string(prop, intval, &strval)
371 != 0)
372 return (-1);
373 (void) strlcpy(buf, strval, len);
374 break;
375
376 default:
377 abort();
378 }
379
380 if (srctype)
381 *srctype = src;
382
383 return (0);
384 }
385
386 /*
387 * Check if the bootfs name has the same pool name as it is set to.
388 * Assuming bootfs is a valid dataset name.
389 */
390 static boolean_t
bootfs_name_valid(const char * pool,char * bootfs)391 bootfs_name_valid(const char *pool, char *bootfs)
392 {
393 int len = strlen(pool);
394
395 if (!zfs_name_valid(bootfs, ZFS_TYPE_FILESYSTEM|ZFS_TYPE_SNAPSHOT))
396 return (B_FALSE);
397
398 if (strncmp(pool, bootfs, len) == 0 &&
399 (bootfs[len] == '/' || bootfs[len] == '\0'))
400 return (B_TRUE);
401
402 return (B_FALSE);
403 }
404
405 /*
406 * Inspect the configuration to determine if any of the devices contain
407 * an EFI label.
408 */
409 static boolean_t
pool_uses_efi(nvlist_t * config)410 pool_uses_efi(nvlist_t *config)
411 {
412 #ifdef sun
413 nvlist_t **child;
414 uint_t c, children;
415
416 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN,
417 &child, &children) != 0)
418 return (read_efi_label(config, NULL) >= 0);
419
420 for (c = 0; c < children; c++) {
421 if (pool_uses_efi(child[c]))
422 return (B_TRUE);
423 }
424 #endif /* sun */
425 return (B_FALSE);
426 }
427
428 boolean_t
zpool_is_bootable(zpool_handle_t * zhp)429 zpool_is_bootable(zpool_handle_t *zhp)
430 {
431 char bootfs[ZPOOL_MAXNAMELEN];
432
433 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs,
434 sizeof (bootfs), NULL, B_FALSE) == 0 && strncmp(bootfs, "-",
435 sizeof (bootfs)) != 0);
436 }
437
438
439 /*
440 * Given an nvlist of zpool properties to be set, validate that they are
441 * correct, and parse any numeric properties (index, boolean, etc) if they are
442 * specified as strings.
443 */
444 static nvlist_t *
zpool_valid_proplist(libzfs_handle_t * hdl,const char * poolname,nvlist_t * props,uint64_t version,prop_flags_t flags,char * errbuf)445 zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
446 nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf)
447 {
448 nvpair_t *elem;
449 nvlist_t *retprops;
450 zpool_prop_t prop;
451 char *strval;
452 uint64_t intval;
453 char *slash, *check;
454 struct stat64 statbuf;
455 zpool_handle_t *zhp;
456 nvlist_t *nvroot;
457
458 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) {
459 (void) no_memory(hdl);
460 return (NULL);
461 }
462
463 elem = NULL;
464 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
465 const char *propname = nvpair_name(elem);
466
467 prop = zpool_name_to_prop(propname);
468 if (prop == ZPROP_INVAL && zpool_prop_feature(propname)) {
469 int err;
470 char *fname = strchr(propname, '@') + 1;
471
472 err = zfeature_lookup_name(fname, NULL);
473 if (err != 0) {
474 ASSERT3U(err, ==, ENOENT);
475 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
476 "invalid feature '%s'"), fname);
477 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
478 goto error;
479 }
480
481 if (nvpair_type(elem) != DATA_TYPE_STRING) {
482 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
483 "'%s' must be a string"), propname);
484 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
485 goto error;
486 }
487
488 (void) nvpair_value_string(elem, &strval);
489 if (strcmp(strval, ZFS_FEATURE_ENABLED) != 0) {
490 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
491 "property '%s' can only be set to "
492 "'enabled'"), propname);
493 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
494 goto error;
495 }
496
497 if (nvlist_add_uint64(retprops, propname, 0) != 0) {
498 (void) no_memory(hdl);
499 goto error;
500 }
501 continue;
502 }
503
504 /*
505 * Make sure this property is valid and applies to this type.
506 */
507 if (prop == ZPROP_INVAL) {
508 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
509 "invalid property '%s'"), propname);
510 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
511 goto error;
512 }
513
514 if (zpool_prop_readonly(prop)) {
515 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
516 "is readonly"), propname);
517 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
518 goto error;
519 }
520
521 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops,
522 &strval, &intval, errbuf) != 0)
523 goto error;
524
525 /*
526 * Perform additional checking for specific properties.
527 */
528 switch (prop) {
529 case ZPOOL_PROP_VERSION:
530 if (intval < version ||
531 !SPA_VERSION_IS_SUPPORTED(intval)) {
532 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
533 "property '%s' number %d is invalid."),
534 propname, intval);
535 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
536 goto error;
537 }
538 break;
539
540 case ZPOOL_PROP_BOOTFS:
541 if (flags.create || flags.import) {
542 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
543 "property '%s' cannot be set at creation "
544 "or import time"), propname);
545 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
546 goto error;
547 }
548
549 if (version < SPA_VERSION_BOOTFS) {
550 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
551 "pool must be upgraded to support "
552 "'%s' property"), propname);
553 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
554 goto error;
555 }
556
557 /*
558 * bootfs property value has to be a dataset name and
559 * the dataset has to be in the same pool as it sets to.
560 */
561 if (strval[0] != '\0' && !bootfs_name_valid(poolname,
562 strval)) {
563 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
564 "is an invalid name"), strval);
565 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
566 goto error;
567 }
568
569 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) {
570 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
571 "could not open pool '%s'"), poolname);
572 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf);
573 goto error;
574 }
575 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
576 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
577
578 #ifdef sun
579 /*
580 * bootfs property cannot be set on a disk which has
581 * been EFI labeled.
582 */
583 if (pool_uses_efi(nvroot)) {
584 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
585 "property '%s' not supported on "
586 "EFI labeled devices"), propname);
587 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf);
588 zpool_close(zhp);
589 goto error;
590 }
591 #endif /* sun */
592 zpool_close(zhp);
593 break;
594
595 case ZPOOL_PROP_ALTROOT:
596 if (!flags.create && !flags.import) {
597 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
598 "property '%s' can only be set during pool "
599 "creation or import"), propname);
600 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
601 goto error;
602 }
603
604 if (strval[0] != '/') {
605 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
606 "bad alternate root '%s'"), strval);
607 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
608 goto error;
609 }
610 break;
611
612 case ZPOOL_PROP_CACHEFILE:
613 if (strval[0] == '\0')
614 break;
615
616 if (strcmp(strval, "none") == 0)
617 break;
618
619 if (strval[0] != '/') {
620 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
621 "property '%s' must be empty, an "
622 "absolute path, or 'none'"), propname);
623 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
624 goto error;
625 }
626
627 slash = strrchr(strval, '/');
628
629 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 ||
630 strcmp(slash, "/..") == 0) {
631 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
632 "'%s' is not a valid file"), strval);
633 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
634 goto error;
635 }
636
637 *slash = '\0';
638
639 if (strval[0] != '\0' &&
640 (stat64(strval, &statbuf) != 0 ||
641 !S_ISDIR(statbuf.st_mode))) {
642 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
643 "'%s' is not a valid directory"),
644 strval);
645 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
646 goto error;
647 }
648
649 *slash = '/';
650 break;
651
652 case ZPOOL_PROP_COMMENT:
653 for (check = strval; *check != '\0'; check++) {
654 if (!isprint(*check)) {
655 zfs_error_aux(hdl,
656 dgettext(TEXT_DOMAIN,
657 "comment may only have printable "
658 "characters"));
659 (void) zfs_error(hdl, EZFS_BADPROP,
660 errbuf);
661 goto error;
662 }
663 }
664 if (strlen(strval) > ZPROP_MAX_COMMENT) {
665 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
666 "comment must not exceed %d characters"),
667 ZPROP_MAX_COMMENT);
668 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
669 goto error;
670 }
671 break;
672 case ZPOOL_PROP_READONLY:
673 if (!flags.import) {
674 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
675 "property '%s' can only be set at "
676 "import time"), propname);
677 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
678 goto error;
679 }
680 break;
681 }
682 }
683
684 return (retprops);
685 error:
686 nvlist_free(retprops);
687 return (NULL);
688 }
689
690 /*
691 * Set zpool property : propname=propval.
692 */
693 int
zpool_set_prop(zpool_handle_t * zhp,const char * propname,const char * propval)694 zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval)
695 {
696 zfs_cmd_t zc = { 0 };
697 int ret = -1;
698 char errbuf[1024];
699 nvlist_t *nvl = NULL;
700 nvlist_t *realprops;
701 uint64_t version;
702 prop_flags_t flags = { 0 };
703
704 (void) snprintf(errbuf, sizeof (errbuf),
705 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
706 zhp->zpool_name);
707
708 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
709 return (no_memory(zhp->zpool_hdl));
710
711 if (nvlist_add_string(nvl, propname, propval) != 0) {
712 nvlist_free(nvl);
713 return (no_memory(zhp->zpool_hdl));
714 }
715
716 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
717 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl,
718 zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) {
719 nvlist_free(nvl);
720 return (-1);
721 }
722
723 nvlist_free(nvl);
724 nvl = realprops;
725
726 /*
727 * Execute the corresponding ioctl() to set this property.
728 */
729 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
730
731 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) {
732 nvlist_free(nvl);
733 return (-1);
734 }
735
736 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc);
737
738 zcmd_free_nvlists(&zc);
739 nvlist_free(nvl);
740
741 if (ret)
742 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf);
743 else
744 (void) zpool_props_refresh(zhp);
745
746 return (ret);
747 }
748
749 int
zpool_expand_proplist(zpool_handle_t * zhp,zprop_list_t ** plp)750 zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp)
751 {
752 libzfs_handle_t *hdl = zhp->zpool_hdl;
753 zprop_list_t *entry;
754 char buf[ZFS_MAXPROPLEN];
755 nvlist_t *features = NULL;
756 zprop_list_t **last;
757 boolean_t firstexpand = (NULL == *plp);
758
759 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0)
760 return (-1);
761
762 last = plp;
763 while (*last != NULL)
764 last = &(*last)->pl_next;
765
766 if ((*plp)->pl_all)
767 features = zpool_get_features(zhp);
768
769 if ((*plp)->pl_all && firstexpand) {
770 for (int i = 0; i < SPA_FEATURES; i++) {
771 zprop_list_t *entry = zfs_alloc(hdl,
772 sizeof (zprop_list_t));
773 entry->pl_prop = ZPROP_INVAL;
774 entry->pl_user_prop = zfs_asprintf(hdl, "feature@%s",
775 spa_feature_table[i].fi_uname);
776 entry->pl_width = strlen(entry->pl_user_prop);
777 entry->pl_all = B_TRUE;
778
779 *last = entry;
780 last = &entry->pl_next;
781 }
782 }
783
784 /* add any unsupported features */
785 for (nvpair_t *nvp = nvlist_next_nvpair(features, NULL);
786 nvp != NULL; nvp = nvlist_next_nvpair(features, nvp)) {
787 char *propname;
788 boolean_t found;
789 zprop_list_t *entry;
790
791 if (zfeature_is_supported(nvpair_name(nvp)))
792 continue;
793
794 propname = zfs_asprintf(hdl, "unsupported@%s",
795 nvpair_name(nvp));
796
797 /*
798 * Before adding the property to the list make sure that no
799 * other pool already added the same property.
800 */
801 found = B_FALSE;
802 entry = *plp;
803 while (entry != NULL) {
804 if (entry->pl_user_prop != NULL &&
805 strcmp(propname, entry->pl_user_prop) == 0) {
806 found = B_TRUE;
807 break;
808 }
809 entry = entry->pl_next;
810 }
811 if (found) {
812 free(propname);
813 continue;
814 }
815
816 entry = zfs_alloc(hdl, sizeof (zprop_list_t));
817 entry->pl_prop = ZPROP_INVAL;
818 entry->pl_user_prop = propname;
819 entry->pl_width = strlen(entry->pl_user_prop);
820 entry->pl_all = B_TRUE;
821
822 *last = entry;
823 last = &entry->pl_next;
824 }
825
826 for (entry = *plp; entry != NULL; entry = entry->pl_next) {
827
828 if (entry->pl_fixed)
829 continue;
830
831 if (entry->pl_prop != ZPROP_INVAL &&
832 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf),
833 NULL, B_FALSE) == 0) {
834 if (strlen(buf) > entry->pl_width)
835 entry->pl_width = strlen(buf);
836 }
837 }
838
839 return (0);
840 }
841
842 /*
843 * Get the state for the given feature on the given ZFS pool.
844 */
845 int
zpool_prop_get_feature(zpool_handle_t * zhp,const char * propname,char * buf,size_t len)846 zpool_prop_get_feature(zpool_handle_t *zhp, const char *propname, char *buf,
847 size_t len)
848 {
849 uint64_t refcount;
850 boolean_t found = B_FALSE;
851 nvlist_t *features = zpool_get_features(zhp);
852 boolean_t supported;
853 const char *feature = strchr(propname, '@') + 1;
854
855 supported = zpool_prop_feature(propname);
856 ASSERT(supported || zpool_prop_unsupported(propname));
857
858 /*
859 * Convert from feature name to feature guid. This conversion is
860 * unecessary for unsupported@... properties because they already
861 * use guids.
862 */
863 if (supported) {
864 int ret;
865 spa_feature_t fid;
866
867 ret = zfeature_lookup_name(feature, &fid);
868 if (ret != 0) {
869 (void) strlcpy(buf, "-", len);
870 return (ENOTSUP);
871 }
872 feature = spa_feature_table[fid].fi_guid;
873 }
874
875 if (nvlist_lookup_uint64(features, feature, &refcount) == 0)
876 found = B_TRUE;
877
878 if (supported) {
879 if (!found) {
880 (void) strlcpy(buf, ZFS_FEATURE_DISABLED, len);
881 } else {
882 if (refcount == 0)
883 (void) strlcpy(buf, ZFS_FEATURE_ENABLED, len);
884 else
885 (void) strlcpy(buf, ZFS_FEATURE_ACTIVE, len);
886 }
887 } else {
888 if (found) {
889 if (refcount == 0) {
890 (void) strcpy(buf, ZFS_UNSUPPORTED_INACTIVE);
891 } else {
892 (void) strcpy(buf, ZFS_UNSUPPORTED_READONLY);
893 }
894 } else {
895 (void) strlcpy(buf, "-", len);
896 return (ENOTSUP);
897 }
898 }
899
900 return (0);
901 }
902
903 /*
904 * Don't start the slice at the default block of 34; many storage
905 * devices will use a stripe width of 128k, so start there instead.
906 */
907 #define NEW_START_BLOCK 256
908
909 /*
910 * Validate the given pool name, optionally putting an extended error message in
911 * 'buf'.
912 */
913 boolean_t
zpool_name_valid(libzfs_handle_t * hdl,boolean_t isopen,const char * pool)914 zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool)
915 {
916 namecheck_err_t why;
917 char what;
918 int ret;
919
920 ret = pool_namecheck(pool, &why, &what);
921
922 /*
923 * The rules for reserved pool names were extended at a later point.
924 * But we need to support users with existing pools that may now be
925 * invalid. So we only check for this expanded set of names during a
926 * create (or import), and only in userland.
927 */
928 if (ret == 0 && !isopen &&
929 (strncmp(pool, "mirror", 6) == 0 ||
930 strncmp(pool, "raidz", 5) == 0 ||
931 strncmp(pool, "spare", 5) == 0 ||
932 strcmp(pool, "log") == 0)) {
933 if (hdl != NULL)
934 zfs_error_aux(hdl,
935 dgettext(TEXT_DOMAIN, "name is reserved"));
936 return (B_FALSE);
937 }
938
939
940 if (ret != 0) {
941 if (hdl != NULL) {
942 switch (why) {
943 case NAME_ERR_TOOLONG:
944 zfs_error_aux(hdl,
945 dgettext(TEXT_DOMAIN, "name is too long"));
946 break;
947
948 case NAME_ERR_INVALCHAR:
949 zfs_error_aux(hdl,
950 dgettext(TEXT_DOMAIN, "invalid character "
951 "'%c' in pool name"), what);
952 break;
953
954 case NAME_ERR_NOLETTER:
955 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
956 "name must begin with a letter"));
957 break;
958
959 case NAME_ERR_RESERVED:
960 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
961 "name is reserved"));
962 break;
963
964 case NAME_ERR_DISKLIKE:
965 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
966 "pool name is reserved"));
967 break;
968
969 case NAME_ERR_LEADING_SLASH:
970 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
971 "leading slash in name"));
972 break;
973
974 case NAME_ERR_EMPTY_COMPONENT:
975 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
976 "empty component in name"));
977 break;
978
979 case NAME_ERR_TRAILING_SLASH:
980 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
981 "trailing slash in name"));
982 break;
983
984 case NAME_ERR_MULTIPLE_AT:
985 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
986 "multiple '@' delimiters in name"));
987 break;
988
989 }
990 }
991 return (B_FALSE);
992 }
993
994 return (B_TRUE);
995 }
996
997 /*
998 * Open a handle to the given pool, even if the pool is currently in the FAULTED
999 * state.
1000 */
1001 zpool_handle_t *
zpool_open_canfail(libzfs_handle_t * hdl,const char * pool)1002 zpool_open_canfail(libzfs_handle_t *hdl, const char *pool)
1003 {
1004 zpool_handle_t *zhp;
1005 boolean_t missing;
1006
1007 /*
1008 * Make sure the pool name is valid.
1009 */
1010 if (!zpool_name_valid(hdl, B_TRUE, pool)) {
1011 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME,
1012 dgettext(TEXT_DOMAIN, "cannot open '%s'"),
1013 pool);
1014 return (NULL);
1015 }
1016
1017 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL)
1018 return (NULL);
1019
1020 zhp->zpool_hdl = hdl;
1021 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name));
1022
1023 if (zpool_refresh_stats(zhp, &missing) != 0) {
1024 zpool_close(zhp);
1025 return (NULL);
1026 }
1027
1028 if (missing) {
1029 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool"));
1030 (void) zfs_error_fmt(hdl, EZFS_NOENT,
1031 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool);
1032 zpool_close(zhp);
1033 return (NULL);
1034 }
1035
1036 return (zhp);
1037 }
1038
1039 /*
1040 * Like the above, but silent on error. Used when iterating over pools (because
1041 * the configuration cache may be out of date).
1042 */
1043 int
zpool_open_silent(libzfs_handle_t * hdl,const char * pool,zpool_handle_t ** ret)1044 zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret)
1045 {
1046 zpool_handle_t *zhp;
1047 boolean_t missing;
1048
1049 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL)
1050 return (-1);
1051
1052 zhp->zpool_hdl = hdl;
1053 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name));
1054
1055 if (zpool_refresh_stats(zhp, &missing) != 0) {
1056 zpool_close(zhp);
1057 return (-1);
1058 }
1059
1060 if (missing) {
1061 zpool_close(zhp);
1062 *ret = NULL;
1063 return (0);
1064 }
1065
1066 *ret = zhp;
1067 return (0);
1068 }
1069
1070 /*
1071 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted
1072 * state.
1073 */
1074 zpool_handle_t *
zpool_open(libzfs_handle_t * hdl,const char * pool)1075 zpool_open(libzfs_handle_t *hdl, const char *pool)
1076 {
1077 zpool_handle_t *zhp;
1078
1079 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL)
1080 return (NULL);
1081
1082 if (zhp->zpool_state == POOL_STATE_UNAVAIL) {
1083 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL,
1084 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name);
1085 zpool_close(zhp);
1086 return (NULL);
1087 }
1088
1089 return (zhp);
1090 }
1091
1092 /*
1093 * Close the handle. Simply frees the memory associated with the handle.
1094 */
1095 void
zpool_close(zpool_handle_t * zhp)1096 zpool_close(zpool_handle_t *zhp)
1097 {
1098 if (zhp->zpool_config)
1099 nvlist_free(zhp->zpool_config);
1100 if (zhp->zpool_old_config)
1101 nvlist_free(zhp->zpool_old_config);
1102 if (zhp->zpool_props)
1103 nvlist_free(zhp->zpool_props);
1104 free(zhp);
1105 }
1106
1107 /*
1108 * Return the name of the pool.
1109 */
1110 const char *
zpool_get_name(zpool_handle_t * zhp)1111 zpool_get_name(zpool_handle_t *zhp)
1112 {
1113 return (zhp->zpool_name);
1114 }
1115
1116
1117 /*
1118 * Return the state of the pool (ACTIVE or UNAVAILABLE)
1119 */
1120 int
zpool_get_state(zpool_handle_t * zhp)1121 zpool_get_state(zpool_handle_t *zhp)
1122 {
1123 return (zhp->zpool_state);
1124 }
1125
1126 /*
1127 * Create the named pool, using the provided vdev list. It is assumed
1128 * that the consumer has already validated the contents of the nvlist, so we
1129 * don't have to worry about error semantics.
1130 */
1131 int
zpool_create(libzfs_handle_t * hdl,const char * pool,nvlist_t * nvroot,nvlist_t * props,nvlist_t * fsprops)1132 zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot,
1133 nvlist_t *props, nvlist_t *fsprops)
1134 {
1135 zfs_cmd_t zc = { 0 };
1136 nvlist_t *zc_fsprops = NULL;
1137 nvlist_t *zc_props = NULL;
1138 char msg[1024];
1139 int ret = -1;
1140
1141 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1142 "cannot create '%s'"), pool);
1143
1144 if (!zpool_name_valid(hdl, B_FALSE, pool))
1145 return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
1146
1147 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
1148 return (-1);
1149
1150 if (props) {
1151 prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE };
1152
1153 if ((zc_props = zpool_valid_proplist(hdl, pool, props,
1154 SPA_VERSION_1, flags, msg)) == NULL) {
1155 goto create_failed;
1156 }
1157 }
1158
1159 if (fsprops) {
1160 uint64_t zoned;
1161 char *zonestr;
1162
1163 zoned = ((nvlist_lookup_string(fsprops,
1164 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) &&
1165 strcmp(zonestr, "on") == 0);
1166
1167 if ((zc_fsprops = zfs_valid_proplist(hdl,
1168 ZFS_TYPE_FILESYSTEM, fsprops, zoned, NULL, msg)) == NULL) {
1169 goto create_failed;
1170 }
1171 if (!zc_props &&
1172 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) {
1173 goto create_failed;
1174 }
1175 if (nvlist_add_nvlist(zc_props,
1176 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) {
1177 goto create_failed;
1178 }
1179 }
1180
1181 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
1182 goto create_failed;
1183
1184 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name));
1185
1186 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) {
1187
1188 zcmd_free_nvlists(&zc);
1189 nvlist_free(zc_props);
1190 nvlist_free(zc_fsprops);
1191
1192 switch (errno) {
1193 case EBUSY:
1194 /*
1195 * This can happen if the user has specified the same
1196 * device multiple times. We can't reliably detect this
1197 * until we try to add it and see we already have a
1198 * label.
1199 */
1200 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1201 "one or more vdevs refer to the same device"));
1202 return (zfs_error(hdl, EZFS_BADDEV, msg));
1203
1204 case EOVERFLOW:
1205 /*
1206 * This occurs when one of the devices is below
1207 * SPA_MINDEVSIZE. Unfortunately, we can't detect which
1208 * device was the problem device since there's no
1209 * reliable way to determine device size from userland.
1210 */
1211 {
1212 char buf[64];
1213
1214 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf));
1215
1216 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1217 "one or more devices is less than the "
1218 "minimum size (%s)"), buf);
1219 }
1220 return (zfs_error(hdl, EZFS_BADDEV, msg));
1221
1222 case ENOSPC:
1223 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1224 "one or more devices is out of space"));
1225 return (zfs_error(hdl, EZFS_BADDEV, msg));
1226
1227 case ENOTBLK:
1228 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1229 "cache device must be a disk or disk slice"));
1230 return (zfs_error(hdl, EZFS_BADDEV, msg));
1231
1232 default:
1233 return (zpool_standard_error(hdl, errno, msg));
1234 }
1235 }
1236
1237 create_failed:
1238 zcmd_free_nvlists(&zc);
1239 nvlist_free(zc_props);
1240 nvlist_free(zc_fsprops);
1241 return (ret);
1242 }
1243
1244 /*
1245 * Destroy the given pool. It is up to the caller to ensure that there are no
1246 * datasets left in the pool.
1247 */
1248 int
zpool_destroy(zpool_handle_t * zhp,const char * log_str)1249 zpool_destroy(zpool_handle_t *zhp, const char *log_str)
1250 {
1251 zfs_cmd_t zc = { 0 };
1252 zfs_handle_t *zfp = NULL;
1253 libzfs_handle_t *hdl = zhp->zpool_hdl;
1254 char msg[1024];
1255
1256 if (zhp->zpool_state == POOL_STATE_ACTIVE &&
1257 (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL)
1258 return (-1);
1259
1260 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1261 zc.zc_history = (uint64_t)(uintptr_t)log_str;
1262
1263 if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) {
1264 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1265 "cannot destroy '%s'"), zhp->zpool_name);
1266
1267 if (errno == EROFS) {
1268 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1269 "one or more devices is read only"));
1270 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1271 } else {
1272 (void) zpool_standard_error(hdl, errno, msg);
1273 }
1274
1275 if (zfp)
1276 zfs_close(zfp);
1277 return (-1);
1278 }
1279
1280 if (zfp) {
1281 remove_mountpoint(zfp);
1282 zfs_close(zfp);
1283 }
1284
1285 return (0);
1286 }
1287
1288 /*
1289 * Add the given vdevs to the pool. The caller must have already performed the
1290 * necessary verification to ensure that the vdev specification is well-formed.
1291 */
1292 int
zpool_add(zpool_handle_t * zhp,nvlist_t * nvroot)1293 zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot)
1294 {
1295 zfs_cmd_t zc = { 0 };
1296 int ret;
1297 libzfs_handle_t *hdl = zhp->zpool_hdl;
1298 char msg[1024];
1299 nvlist_t **spares, **l2cache;
1300 uint_t nspares, nl2cache;
1301
1302 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1303 "cannot add to '%s'"), zhp->zpool_name);
1304
1305 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) <
1306 SPA_VERSION_SPARES &&
1307 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
1308 &spares, &nspares) == 0) {
1309 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be "
1310 "upgraded to add hot spares"));
1311 return (zfs_error(hdl, EZFS_BADVERSION, msg));
1312 }
1313
1314 if (zpool_is_bootable(zhp) && nvlist_lookup_nvlist_array(nvroot,
1315 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0) {
1316 uint64_t s;
1317
1318 for (s = 0; s < nspares; s++) {
1319 char *path;
1320
1321 if (nvlist_lookup_string(spares[s], ZPOOL_CONFIG_PATH,
1322 &path) == 0 && pool_uses_efi(spares[s])) {
1323 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1324 "device '%s' contains an EFI label and "
1325 "cannot be used on root pools."),
1326 zpool_vdev_name(hdl, NULL, spares[s],
1327 B_FALSE));
1328 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg));
1329 }
1330 }
1331 }
1332
1333 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) <
1334 SPA_VERSION_L2CACHE &&
1335 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
1336 &l2cache, &nl2cache) == 0) {
1337 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be "
1338 "upgraded to add cache devices"));
1339 return (zfs_error(hdl, EZFS_BADVERSION, msg));
1340 }
1341
1342 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
1343 return (-1);
1344 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1345
1346 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) {
1347 switch (errno) {
1348 case EBUSY:
1349 /*
1350 * This can happen if the user has specified the same
1351 * device multiple times. We can't reliably detect this
1352 * until we try to add it and see we already have a
1353 * label.
1354 */
1355 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1356 "one or more vdevs refer to the same device"));
1357 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1358 break;
1359
1360 case EOVERFLOW:
1361 /*
1362 * This occurrs when one of the devices is below
1363 * SPA_MINDEVSIZE. Unfortunately, we can't detect which
1364 * device was the problem device since there's no
1365 * reliable way to determine device size from userland.
1366 */
1367 {
1368 char buf[64];
1369
1370 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf));
1371
1372 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1373 "device is less than the minimum "
1374 "size (%s)"), buf);
1375 }
1376 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1377 break;
1378
1379 case ENOTSUP:
1380 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1381 "pool must be upgraded to add these vdevs"));
1382 (void) zfs_error(hdl, EZFS_BADVERSION, msg);
1383 break;
1384
1385 case EDOM:
1386 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1387 "root pool can not have multiple vdevs"
1388 " or separate logs"));
1389 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, msg);
1390 break;
1391
1392 case ENOTBLK:
1393 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1394 "cache device must be a disk or disk slice"));
1395 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1396 break;
1397
1398 default:
1399 (void) zpool_standard_error(hdl, errno, msg);
1400 }
1401
1402 ret = -1;
1403 } else {
1404 ret = 0;
1405 }
1406
1407 zcmd_free_nvlists(&zc);
1408
1409 return (ret);
1410 }
1411
1412 /*
1413 * Exports the pool from the system. The caller must ensure that there are no
1414 * mounted datasets in the pool.
1415 */
1416 static int
zpool_export_common(zpool_handle_t * zhp,boolean_t force,boolean_t hardforce,const char * log_str)1417 zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce,
1418 const char *log_str)
1419 {
1420 zfs_cmd_t zc = { 0 };
1421 char msg[1024];
1422
1423 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1424 "cannot export '%s'"), zhp->zpool_name);
1425
1426 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1427 zc.zc_cookie = force;
1428 zc.zc_guid = hardforce;
1429 zc.zc_history = (uint64_t)(uintptr_t)log_str;
1430
1431 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) {
1432 switch (errno) {
1433 case EXDEV:
1434 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN,
1435 "use '-f' to override the following errors:\n"
1436 "'%s' has an active shared spare which could be"
1437 " used by other pools once '%s' is exported."),
1438 zhp->zpool_name, zhp->zpool_name);
1439 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE,
1440 msg));
1441 default:
1442 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno,
1443 msg));
1444 }
1445 }
1446
1447 return (0);
1448 }
1449
1450 int
zpool_export(zpool_handle_t * zhp,boolean_t force,const char * log_str)1451 zpool_export(zpool_handle_t *zhp, boolean_t force, const char *log_str)
1452 {
1453 return (zpool_export_common(zhp, force, B_FALSE, log_str));
1454 }
1455
1456 int
zpool_export_force(zpool_handle_t * zhp,const char * log_str)1457 zpool_export_force(zpool_handle_t *zhp, const char *log_str)
1458 {
1459 return (zpool_export_common(zhp, B_TRUE, B_TRUE, log_str));
1460 }
1461
1462 static void
zpool_rewind_exclaim(libzfs_handle_t * hdl,const char * name,boolean_t dryrun,nvlist_t * config)1463 zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun,
1464 nvlist_t *config)
1465 {
1466 nvlist_t *nv = NULL;
1467 uint64_t rewindto;
1468 int64_t loss = -1;
1469 struct tm t;
1470 char timestr[128];
1471
1472 if (!hdl->libzfs_printerr || config == NULL)
1473 return;
1474
1475 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 ||
1476 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0) {
1477 return;
1478 }
1479
1480 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
1481 return;
1482 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
1483
1484 if (localtime_r((time_t *)&rewindto, &t) != NULL &&
1485 strftime(timestr, 128, 0, &t) != 0) {
1486 if (dryrun) {
1487 (void) printf(dgettext(TEXT_DOMAIN,
1488 "Would be able to return %s "
1489 "to its state as of %s.\n"),
1490 name, timestr);
1491 } else {
1492 (void) printf(dgettext(TEXT_DOMAIN,
1493 "Pool %s returned to its state as of %s.\n"),
1494 name, timestr);
1495 }
1496 if (loss > 120) {
1497 (void) printf(dgettext(TEXT_DOMAIN,
1498 "%s approximately %lld "),
1499 dryrun ? "Would discard" : "Discarded",
1500 (loss + 30) / 60);
1501 (void) printf(dgettext(TEXT_DOMAIN,
1502 "minutes of transactions.\n"));
1503 } else if (loss > 0) {
1504 (void) printf(dgettext(TEXT_DOMAIN,
1505 "%s approximately %lld "),
1506 dryrun ? "Would discard" : "Discarded", loss);
1507 (void) printf(dgettext(TEXT_DOMAIN,
1508 "seconds of transactions.\n"));
1509 }
1510 }
1511 }
1512
1513 void
zpool_explain_recover(libzfs_handle_t * hdl,const char * name,int reason,nvlist_t * config)1514 zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason,
1515 nvlist_t *config)
1516 {
1517 nvlist_t *nv = NULL;
1518 int64_t loss = -1;
1519 uint64_t edata = UINT64_MAX;
1520 uint64_t rewindto;
1521 struct tm t;
1522 char timestr[128];
1523
1524 if (!hdl->libzfs_printerr)
1525 return;
1526
1527 if (reason >= 0)
1528 (void) printf(dgettext(TEXT_DOMAIN, "action: "));
1529 else
1530 (void) printf(dgettext(TEXT_DOMAIN, "\t"));
1531
1532 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */
1533 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 ||
1534 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0 ||
1535 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
1536 goto no_info;
1537
1538 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
1539 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS,
1540 &edata);
1541
1542 (void) printf(dgettext(TEXT_DOMAIN,
1543 "Recovery is possible, but will result in some data loss.\n"));
1544
1545 if (localtime_r((time_t *)&rewindto, &t) != NULL &&
1546 strftime(timestr, 128, 0, &t) != 0) {
1547 (void) printf(dgettext(TEXT_DOMAIN,
1548 "\tReturning the pool to its state as of %s\n"
1549 "\tshould correct the problem. "),
1550 timestr);
1551 } else {
1552 (void) printf(dgettext(TEXT_DOMAIN,
1553 "\tReverting the pool to an earlier state "
1554 "should correct the problem.\n\t"));
1555 }
1556
1557 if (loss > 120) {
1558 (void) printf(dgettext(TEXT_DOMAIN,
1559 "Approximately %lld minutes of data\n"
1560 "\tmust be discarded, irreversibly. "), (loss + 30) / 60);
1561 } else if (loss > 0) {
1562 (void) printf(dgettext(TEXT_DOMAIN,
1563 "Approximately %lld seconds of data\n"
1564 "\tmust be discarded, irreversibly. "), loss);
1565 }
1566 if (edata != 0 && edata != UINT64_MAX) {
1567 if (edata == 1) {
1568 (void) printf(dgettext(TEXT_DOMAIN,
1569 "After rewind, at least\n"
1570 "\tone persistent user-data error will remain. "));
1571 } else {
1572 (void) printf(dgettext(TEXT_DOMAIN,
1573 "After rewind, several\n"
1574 "\tpersistent user-data errors will remain. "));
1575 }
1576 }
1577 (void) printf(dgettext(TEXT_DOMAIN,
1578 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "),
1579 reason >= 0 ? "clear" : "import", name);
1580
1581 (void) printf(dgettext(TEXT_DOMAIN,
1582 "A scrub of the pool\n"
1583 "\tis strongly recommended after recovery.\n"));
1584 return;
1585
1586 no_info:
1587 (void) printf(dgettext(TEXT_DOMAIN,
1588 "Destroy and re-create the pool from\n\ta backup source.\n"));
1589 }
1590
1591 /*
1592 * zpool_import() is a contracted interface. Should be kept the same
1593 * if possible.
1594 *
1595 * Applications should use zpool_import_props() to import a pool with
1596 * new properties value to be set.
1597 */
1598 int
zpool_import(libzfs_handle_t * hdl,nvlist_t * config,const char * newname,char * altroot)1599 zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
1600 char *altroot)
1601 {
1602 nvlist_t *props = NULL;
1603 int ret;
1604
1605 if (altroot != NULL) {
1606 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
1607 return (zfs_error_fmt(hdl, EZFS_NOMEM,
1608 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1609 newname));
1610 }
1611
1612 if (nvlist_add_string(props,
1613 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 ||
1614 nvlist_add_string(props,
1615 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) {
1616 nvlist_free(props);
1617 return (zfs_error_fmt(hdl, EZFS_NOMEM,
1618 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1619 newname));
1620 }
1621 }
1622
1623 ret = zpool_import_props(hdl, config, newname, props,
1624 ZFS_IMPORT_NORMAL);
1625 if (props)
1626 nvlist_free(props);
1627 return (ret);
1628 }
1629
1630 static void
print_vdev_tree(libzfs_handle_t * hdl,const char * name,nvlist_t * nv,int indent)1631 print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv,
1632 int indent)
1633 {
1634 nvlist_t **child;
1635 uint_t c, children;
1636 char *vname;
1637 uint64_t is_log = 0;
1638
1639 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG,
1640 &is_log);
1641
1642 if (name != NULL)
1643 (void) printf("\t%*s%s%s\n", indent, "", name,
1644 is_log ? " [log]" : "");
1645
1646 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1647 &child, &children) != 0)
1648 return;
1649
1650 for (c = 0; c < children; c++) {
1651 vname = zpool_vdev_name(hdl, NULL, child[c], B_TRUE);
1652 print_vdev_tree(hdl, vname, child[c], indent + 2);
1653 free(vname);
1654 }
1655 }
1656
1657 void
zpool_print_unsup_feat(nvlist_t * config)1658 zpool_print_unsup_feat(nvlist_t *config)
1659 {
1660 nvlist_t *nvinfo, *unsup_feat;
1661
1662 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nvinfo) ==
1663 0);
1664 verify(nvlist_lookup_nvlist(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT,
1665 &unsup_feat) == 0);
1666
1667 for (nvpair_t *nvp = nvlist_next_nvpair(unsup_feat, NULL); nvp != NULL;
1668 nvp = nvlist_next_nvpair(unsup_feat, nvp)) {
1669 char *desc;
1670
1671 verify(nvpair_type(nvp) == DATA_TYPE_STRING);
1672 verify(nvpair_value_string(nvp, &desc) == 0);
1673
1674 if (strlen(desc) > 0)
1675 (void) printf("\t%s (%s)\n", nvpair_name(nvp), desc);
1676 else
1677 (void) printf("\t%s\n", nvpair_name(nvp));
1678 }
1679 }
1680
1681 /*
1682 * Import the given pool using the known configuration and a list of
1683 * properties to be set. The configuration should have come from
1684 * zpool_find_import(). The 'newname' parameters control whether the pool
1685 * is imported with a different name.
1686 */
1687 int
zpool_import_props(libzfs_handle_t * hdl,nvlist_t * config,const char * newname,nvlist_t * props,int flags)1688 zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
1689 nvlist_t *props, int flags)
1690 {
1691 zfs_cmd_t zc = { 0 };
1692 zpool_rewind_policy_t policy;
1693 nvlist_t *nv = NULL;
1694 nvlist_t *nvinfo = NULL;
1695 nvlist_t *missing = NULL;
1696 char *thename;
1697 char *origname;
1698 int ret;
1699 int error = 0;
1700 char errbuf[1024];
1701
1702 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
1703 &origname) == 0);
1704
1705 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
1706 "cannot import pool '%s'"), origname);
1707
1708 if (newname != NULL) {
1709 if (!zpool_name_valid(hdl, B_FALSE, newname))
1710 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME,
1711 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1712 newname));
1713 thename = (char *)newname;
1714 } else {
1715 thename = origname;
1716 }
1717
1718 if (props != NULL) {
1719 uint64_t version;
1720 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
1721
1722 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
1723 &version) == 0);
1724
1725 if ((props = zpool_valid_proplist(hdl, origname,
1726 props, version, flags, errbuf)) == NULL)
1727 return (-1);
1728 if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
1729 nvlist_free(props);
1730 return (-1);
1731 }
1732 nvlist_free(props);
1733 }
1734
1735 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name));
1736
1737 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
1738 &zc.zc_guid) == 0);
1739
1740 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) {
1741 zcmd_free_nvlists(&zc);
1742 return (-1);
1743 }
1744 if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) {
1745 zcmd_free_nvlists(&zc);
1746 return (-1);
1747 }
1748
1749 zc.zc_cookie = flags;
1750 while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 &&
1751 errno == ENOMEM) {
1752 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
1753 zcmd_free_nvlists(&zc);
1754 return (-1);
1755 }
1756 }
1757 if (ret != 0)
1758 error = errno;
1759
1760 (void) zcmd_read_dst_nvlist(hdl, &zc, &nv);
1761
1762 zcmd_free_nvlists(&zc);
1763
1764 zpool_get_rewind_policy(config, &policy);
1765
1766 if (error) {
1767 char desc[1024];
1768
1769 /*
1770 * Dry-run failed, but we print out what success
1771 * looks like if we found a best txg
1772 */
1773 if (policy.zrp_request & ZPOOL_TRY_REWIND) {
1774 zpool_rewind_exclaim(hdl, newname ? origname : thename,
1775 B_TRUE, nv);
1776 nvlist_free(nv);
1777 return (-1);
1778 }
1779
1780 if (newname == NULL)
1781 (void) snprintf(desc, sizeof (desc),
1782 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1783 thename);
1784 else
1785 (void) snprintf(desc, sizeof (desc),
1786 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"),
1787 origname, thename);
1788
1789 switch (error) {
1790 case ENOTSUP:
1791 if (nv != NULL && nvlist_lookup_nvlist(nv,
1792 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 &&
1793 nvlist_exists(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT)) {
1794 (void) printf(dgettext(TEXT_DOMAIN, "This "
1795 "pool uses the following feature(s) not "
1796 "supported by this system:\n"));
1797 zpool_print_unsup_feat(nv);
1798 if (nvlist_exists(nvinfo,
1799 ZPOOL_CONFIG_CAN_RDONLY)) {
1800 (void) printf(dgettext(TEXT_DOMAIN,
1801 "All unsupported features are only "
1802 "required for writing to the pool."
1803 "\nThe pool can be imported using "
1804 "'-o readonly=on'.\n"));
1805 }
1806 }
1807 /*
1808 * Unsupported version.
1809 */
1810 (void) zfs_error(hdl, EZFS_BADVERSION, desc);
1811 break;
1812
1813 case EINVAL:
1814 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc);
1815 break;
1816
1817 case EROFS:
1818 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1819 "one or more devices is read only"));
1820 (void) zfs_error(hdl, EZFS_BADDEV, desc);
1821 break;
1822
1823 case ENXIO:
1824 if (nv && nvlist_lookup_nvlist(nv,
1825 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 &&
1826 nvlist_lookup_nvlist(nvinfo,
1827 ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) {
1828 (void) printf(dgettext(TEXT_DOMAIN,
1829 "The devices below are missing, use "
1830 "'-m' to import the pool anyway:\n"));
1831 print_vdev_tree(hdl, NULL, missing, 2);
1832 (void) printf("\n");
1833 }
1834 (void) zpool_standard_error(hdl, error, desc);
1835 break;
1836
1837 case EEXIST:
1838 (void) zpool_standard_error(hdl, error, desc);
1839 break;
1840
1841 default:
1842 (void) zpool_standard_error(hdl, error, desc);
1843 zpool_explain_recover(hdl,
1844 newname ? origname : thename, -error, nv);
1845 break;
1846 }
1847
1848 nvlist_free(nv);
1849 ret = -1;
1850 } else {
1851 zpool_handle_t *zhp;
1852
1853 /*
1854 * This should never fail, but play it safe anyway.
1855 */
1856 if (zpool_open_silent(hdl, thename, &zhp) != 0)
1857 ret = -1;
1858 else if (zhp != NULL)
1859 zpool_close(zhp);
1860 if (policy.zrp_request &
1861 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
1862 zpool_rewind_exclaim(hdl, newname ? origname : thename,
1863 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv);
1864 }
1865 nvlist_free(nv);
1866 return (0);
1867 }
1868
1869 return (ret);
1870 }
1871
1872 /*
1873 * Scan the pool.
1874 */
1875 int
zpool_scan(zpool_handle_t * zhp,pool_scan_func_t func)1876 zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func)
1877 {
1878 zfs_cmd_t zc = { 0 };
1879 char msg[1024];
1880 libzfs_handle_t *hdl = zhp->zpool_hdl;
1881
1882 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1883 zc.zc_cookie = func;
1884
1885 if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 ||
1886 (errno == ENOENT && func != POOL_SCAN_NONE))
1887 return (0);
1888
1889 if (func == POOL_SCAN_SCRUB) {
1890 (void) snprintf(msg, sizeof (msg),
1891 dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name);
1892 } else if (func == POOL_SCAN_NONE) {
1893 (void) snprintf(msg, sizeof (msg),
1894 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"),
1895 zc.zc_name);
1896 } else {
1897 assert(!"unexpected result");
1898 }
1899
1900 if (errno == EBUSY) {
1901 nvlist_t *nvroot;
1902 pool_scan_stat_t *ps = NULL;
1903 uint_t psc;
1904
1905 verify(nvlist_lookup_nvlist(zhp->zpool_config,
1906 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
1907 (void) nvlist_lookup_uint64_array(nvroot,
1908 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc);
1909 if (ps && ps->pss_func == POOL_SCAN_SCRUB)
1910 return (zfs_error(hdl, EZFS_SCRUBBING, msg));
1911 else
1912 return (zfs_error(hdl, EZFS_RESILVERING, msg));
1913 } else if (errno == ENOENT) {
1914 return (zfs_error(hdl, EZFS_NO_SCRUB, msg));
1915 } else {
1916 return (zpool_standard_error(hdl, errno, msg));
1917 }
1918 }
1919
1920 #ifdef illumos
1921 /*
1922 * This provides a very minimal check whether a given string is likely a
1923 * c#t#d# style string. Users of this are expected to do their own
1924 * verification of the s# part.
1925 */
1926 #define CTD_CHECK(str) (str && str[0] == 'c' && isdigit(str[1]))
1927
1928 /*
1929 * More elaborate version for ones which may start with "/dev/dsk/"
1930 * and the like.
1931 */
1932 static int
ctd_check_path(char * str)1933 ctd_check_path(char *str) {
1934 /*
1935 * If it starts with a slash, check the last component.
1936 */
1937 if (str && str[0] == '/') {
1938 char *tmp = strrchr(str, '/');
1939
1940 /*
1941 * If it ends in "/old", check the second-to-last
1942 * component of the string instead.
1943 */
1944 if (tmp != str && strcmp(tmp, "/old") == 0) {
1945 for (tmp--; *tmp != '/'; tmp--)
1946 ;
1947 }
1948 str = tmp + 1;
1949 }
1950 return (CTD_CHECK(str));
1951 }
1952 #endif
1953
1954 /*
1955 * Find a vdev that matches the search criteria specified. We use the
1956 * the nvpair name to determine how we should look for the device.
1957 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL
1958 * spare; but FALSE if its an INUSE spare.
1959 */
1960 static nvlist_t *
vdev_to_nvlist_iter(nvlist_t * nv,nvlist_t * search,boolean_t * avail_spare,boolean_t * l2cache,boolean_t * log)1961 vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare,
1962 boolean_t *l2cache, boolean_t *log)
1963 {
1964 uint_t c, children;
1965 nvlist_t **child;
1966 nvlist_t *ret;
1967 uint64_t is_log;
1968 char *srchkey;
1969 nvpair_t *pair = nvlist_next_nvpair(search, NULL);
1970
1971 /* Nothing to look for */
1972 if (search == NULL || pair == NULL)
1973 return (NULL);
1974
1975 /* Obtain the key we will use to search */
1976 srchkey = nvpair_name(pair);
1977
1978 switch (nvpair_type(pair)) {
1979 case DATA_TYPE_UINT64:
1980 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) {
1981 uint64_t srchval, theguid;
1982
1983 verify(nvpair_value_uint64(pair, &srchval) == 0);
1984 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
1985 &theguid) == 0);
1986 if (theguid == srchval)
1987 return (nv);
1988 }
1989 break;
1990
1991 case DATA_TYPE_STRING: {
1992 char *srchval, *val;
1993
1994 verify(nvpair_value_string(pair, &srchval) == 0);
1995 if (nvlist_lookup_string(nv, srchkey, &val) != 0)
1996 break;
1997
1998 /*
1999 * Search for the requested value. Special cases:
2000 *
2001 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in
2002 * "s0" or "s0/old". The "s0" part is hidden from the user,
2003 * but included in the string, so this matches around it.
2004 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE).
2005 *
2006 * Otherwise, all other searches are simple string compares.
2007 */
2008 #ifdef illumos
2009 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 &&
2010 ctd_check_path(val)) {
2011 uint64_t wholedisk = 0;
2012
2013 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
2014 &wholedisk);
2015 if (wholedisk) {
2016 int slen = strlen(srchval);
2017 int vlen = strlen(val);
2018
2019 if (slen != vlen - 2)
2020 break;
2021
2022 /*
2023 * make_leaf_vdev() should only set
2024 * wholedisk for ZPOOL_CONFIG_PATHs which
2025 * will include "/dev/dsk/", giving plenty of
2026 * room for the indices used next.
2027 */
2028 ASSERT(vlen >= 6);
2029
2030 /*
2031 * strings identical except trailing "s0"
2032 */
2033 if (strcmp(&val[vlen - 2], "s0") == 0 &&
2034 strncmp(srchval, val, slen) == 0)
2035 return (nv);
2036
2037 /*
2038 * strings identical except trailing "s0/old"
2039 */
2040 if (strcmp(&val[vlen - 6], "s0/old") == 0 &&
2041 strcmp(&srchval[slen - 4], "/old") == 0 &&
2042 strncmp(srchval, val, slen - 4) == 0)
2043 return (nv);
2044
2045 break;
2046 }
2047 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) {
2048 #else
2049 if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) {
2050 #endif
2051 char *type, *idx, *end, *p;
2052 uint64_t id, vdev_id;
2053
2054 /*
2055 * Determine our vdev type, keeping in mind
2056 * that the srchval is composed of a type and
2057 * vdev id pair (i.e. mirror-4).
2058 */
2059 if ((type = strdup(srchval)) == NULL)
2060 return (NULL);
2061
2062 if ((p = strrchr(type, '-')) == NULL) {
2063 free(type);
2064 break;
2065 }
2066 idx = p + 1;
2067 *p = '\0';
2068
2069 /*
2070 * If the types don't match then keep looking.
2071 */
2072 if (strncmp(val, type, strlen(val)) != 0) {
2073 free(type);
2074 break;
2075 }
2076
2077 verify(strncmp(type, VDEV_TYPE_RAIDZ,
2078 strlen(VDEV_TYPE_RAIDZ)) == 0 ||
2079 strncmp(type, VDEV_TYPE_MIRROR,
2080 strlen(VDEV_TYPE_MIRROR)) == 0);
2081 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
2082 &id) == 0);
2083
2084 errno = 0;
2085 vdev_id = strtoull(idx, &end, 10);
2086
2087 free(type);
2088 if (errno != 0)
2089 return (NULL);
2090
2091 /*
2092 * Now verify that we have the correct vdev id.
2093 */
2094 if (vdev_id == id)
2095 return (nv);
2096 }
2097
2098 /*
2099 * Common case
2100 */
2101 if (strcmp(srchval, val) == 0)
2102 return (nv);
2103 break;
2104 }
2105
2106 default:
2107 break;
2108 }
2109
2110 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
2111 &child, &children) != 0)
2112 return (NULL);
2113
2114 for (c = 0; c < children; c++) {
2115 if ((ret = vdev_to_nvlist_iter(child[c], search,
2116 avail_spare, l2cache, NULL)) != NULL) {
2117 /*
2118 * The 'is_log' value is only set for the toplevel
2119 * vdev, not the leaf vdevs. So we always lookup the
2120 * log device from the root of the vdev tree (where
2121 * 'log' is non-NULL).
2122 */
2123 if (log != NULL &&
2124 nvlist_lookup_uint64(child[c],
2125 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 &&
2126 is_log) {
2127 *log = B_TRUE;
2128 }
2129 return (ret);
2130 }
2131 }
2132
2133 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
2134 &child, &children) == 0) {
2135 for (c = 0; c < children; c++) {
2136 if ((ret = vdev_to_nvlist_iter(child[c], search,
2137 avail_spare, l2cache, NULL)) != NULL) {
2138 *avail_spare = B_TRUE;
2139 return (ret);
2140 }
2141 }
2142 }
2143
2144 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
2145 &child, &children) == 0) {
2146 for (c = 0; c < children; c++) {
2147 if ((ret = vdev_to_nvlist_iter(child[c], search,
2148 avail_spare, l2cache, NULL)) != NULL) {
2149 *l2cache = B_TRUE;
2150 return (ret);
2151 }
2152 }
2153 }
2154
2155 return (NULL);
2156 }
2157
2158 /*
2159 * Given a physical path (minus the "/devices" prefix), find the
2160 * associated vdev.
2161 */
2162 nvlist_t *
2163 zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath,
2164 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log)
2165 {
2166 nvlist_t *search, *nvroot, *ret;
2167
2168 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2169 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0);
2170
2171 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
2172 &nvroot) == 0);
2173
2174 *avail_spare = B_FALSE;
2175 *l2cache = B_FALSE;
2176 if (log != NULL)
2177 *log = B_FALSE;
2178 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
2179 nvlist_free(search);
2180
2181 return (ret);
2182 }
2183
2184 /*
2185 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz).
2186 */
2187 boolean_t
2188 zpool_vdev_is_interior(const char *name)
2189 {
2190 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 ||
2191 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0)
2192 return (B_TRUE);
2193 return (B_FALSE);
2194 }
2195
2196 nvlist_t *
2197 zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare,
2198 boolean_t *l2cache, boolean_t *log)
2199 {
2200 char buf[MAXPATHLEN];
2201 char *end;
2202 nvlist_t *nvroot, *search, *ret;
2203 uint64_t guid;
2204
2205 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2206
2207 guid = strtoull(path, &end, 10);
2208 if (guid != 0 && *end == '\0') {
2209 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0);
2210 } else if (zpool_vdev_is_interior(path)) {
2211 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0);
2212 } else if (path[0] != '/') {
2213 (void) snprintf(buf, sizeof (buf), "%s%s", _PATH_DEV, path);
2214 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0);
2215 } else {
2216 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0);
2217 }
2218
2219 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
2220 &nvroot) == 0);
2221
2222 *avail_spare = B_FALSE;
2223 *l2cache = B_FALSE;
2224 if (log != NULL)
2225 *log = B_FALSE;
2226 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
2227 nvlist_free(search);
2228
2229 return (ret);
2230 }
2231
2232 static int
2233 vdev_online(nvlist_t *nv)
2234 {
2235 uint64_t ival;
2236
2237 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 ||
2238 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 ||
2239 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0)
2240 return (0);
2241
2242 return (1);
2243 }
2244
2245 /*
2246 * Helper function for zpool_get_physpaths().
2247 */
2248 static int
2249 vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size,
2250 size_t *bytes_written)
2251 {
2252 size_t bytes_left, pos, rsz;
2253 char *tmppath;
2254 const char *format;
2255
2256 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH,
2257 &tmppath) != 0)
2258 return (EZFS_NODEVICE);
2259
2260 pos = *bytes_written;
2261 bytes_left = physpath_size - pos;
2262 format = (pos == 0) ? "%s" : " %s";
2263
2264 rsz = snprintf(physpath + pos, bytes_left, format, tmppath);
2265 *bytes_written += rsz;
2266
2267 if (rsz >= bytes_left) {
2268 /* if physpath was not copied properly, clear it */
2269 if (bytes_left != 0) {
2270 physpath[pos] = 0;
2271 }
2272 return (EZFS_NOSPC);
2273 }
2274 return (0);
2275 }
2276
2277 static int
2278 vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size,
2279 size_t *rsz, boolean_t is_spare)
2280 {
2281 char *type;
2282 int ret;
2283
2284 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0)
2285 return (EZFS_INVALCONFIG);
2286
2287 if (strcmp(type, VDEV_TYPE_DISK) == 0) {
2288 /*
2289 * An active spare device has ZPOOL_CONFIG_IS_SPARE set.
2290 * For a spare vdev, we only want to boot from the active
2291 * spare device.
2292 */
2293 if (is_spare) {
2294 uint64_t spare = 0;
2295 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE,
2296 &spare);
2297 if (!spare)
2298 return (EZFS_INVALCONFIG);
2299 }
2300
2301 if (vdev_online(nv)) {
2302 if ((ret = vdev_get_one_physpath(nv, physpath,
2303 phypath_size, rsz)) != 0)
2304 return (ret);
2305 }
2306 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 ||
2307 strcmp(type, VDEV_TYPE_REPLACING) == 0 ||
2308 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) {
2309 nvlist_t **child;
2310 uint_t count;
2311 int i, ret;
2312
2313 if (nvlist_lookup_nvlist_array(nv,
2314 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0)
2315 return (EZFS_INVALCONFIG);
2316
2317 for (i = 0; i < count; i++) {
2318 ret = vdev_get_physpaths(child[i], physpath,
2319 phypath_size, rsz, is_spare);
2320 if (ret == EZFS_NOSPC)
2321 return (ret);
2322 }
2323 }
2324
2325 return (EZFS_POOL_INVALARG);
2326 }
2327
2328 /*
2329 * Get phys_path for a root pool config.
2330 * Return 0 on success; non-zero on failure.
2331 */
2332 static int
2333 zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size)
2334 {
2335 size_t rsz;
2336 nvlist_t *vdev_root;
2337 nvlist_t **child;
2338 uint_t count;
2339 char *type;
2340
2341 rsz = 0;
2342
2343 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2344 &vdev_root) != 0)
2345 return (EZFS_INVALCONFIG);
2346
2347 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 ||
2348 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN,
2349 &child, &count) != 0)
2350 return (EZFS_INVALCONFIG);
2351
2352 /*
2353 * root pool can not have EFI labeled disks and can only have
2354 * a single top-level vdev.
2355 */
2356 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1 ||
2357 pool_uses_efi(vdev_root))
2358 return (EZFS_POOL_INVALARG);
2359
2360 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz,
2361 B_FALSE);
2362
2363 /* No online devices */
2364 if (rsz == 0)
2365 return (EZFS_NODEVICE);
2366
2367 return (0);
2368 }
2369
2370 /*
2371 * Get phys_path for a root pool
2372 * Return 0 on success; non-zero on failure.
2373 */
2374 int
2375 zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size)
2376 {
2377 return (zpool_get_config_physpath(zhp->zpool_config, physpath,
2378 phypath_size));
2379 }
2380
2381 /*
2382 * If the device has being dynamically expanded then we need to relabel
2383 * the disk to use the new unallocated space.
2384 */
2385 static int
2386 zpool_relabel_disk(libzfs_handle_t *hdl, const char *name)
2387 {
2388 #ifdef sun
2389 char path[MAXPATHLEN];
2390 char errbuf[1024];
2391 int fd, error;
2392 int (*_efi_use_whole_disk)(int);
2393
2394 if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT,
2395 "efi_use_whole_disk")) == NULL)
2396 return (-1);
2397
2398 (void) snprintf(path, sizeof (path), "%s/%s", RDISK_ROOT, name);
2399
2400 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) {
2401 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
2402 "relabel '%s': unable to open device"), name);
2403 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf));
2404 }
2405
2406 /*
2407 * It's possible that we might encounter an error if the device
2408 * does not have any unallocated space left. If so, we simply
2409 * ignore that error and continue on.
2410 */
2411 error = _efi_use_whole_disk(fd);
2412 (void) close(fd);
2413 if (error && error != VT_ENOSPC) {
2414 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
2415 "relabel '%s': unable to read disk capacity"), name);
2416 return (zfs_error(hdl, EZFS_NOCAP, errbuf));
2417 }
2418 #endif /* sun */
2419 return (0);
2420 }
2421
2422 /*
2423 * Bring the specified vdev online. The 'flags' parameter is a set of the
2424 * ZFS_ONLINE_* flags.
2425 */
2426 int
2427 zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
2428 vdev_state_t *newstate)
2429 {
2430 zfs_cmd_t zc = { 0 };
2431 char msg[1024];
2432 nvlist_t *tgt;
2433 boolean_t avail_spare, l2cache, islog;
2434 libzfs_handle_t *hdl = zhp->zpool_hdl;
2435
2436 if (flags & ZFS_ONLINE_EXPAND) {
2437 (void) snprintf(msg, sizeof (msg),
2438 dgettext(TEXT_DOMAIN, "cannot expand %s"), path);
2439 } else {
2440 (void) snprintf(msg, sizeof (msg),
2441 dgettext(TEXT_DOMAIN, "cannot online %s"), path);
2442 }
2443
2444 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2445 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
2446 &islog)) == NULL)
2447 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2448
2449 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2450
2451 if (avail_spare)
2452 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2453
2454 if (flags & ZFS_ONLINE_EXPAND ||
2455 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) {
2456 char *pathname = NULL;
2457 uint64_t wholedisk = 0;
2458
2459 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK,
2460 &wholedisk);
2461 verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH,
2462 &pathname) == 0);
2463
2464 /*
2465 * XXX - L2ARC 1.0 devices can't support expansion.
2466 */
2467 if (l2cache) {
2468 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2469 "cannot expand cache devices"));
2470 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg));
2471 }
2472
2473 if (wholedisk) {
2474 pathname += strlen(DISK_ROOT) + 1;
2475 (void) zpool_relabel_disk(hdl, pathname);
2476 }
2477 }
2478
2479 zc.zc_cookie = VDEV_STATE_ONLINE;
2480 zc.zc_obj = flags;
2481
2482 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) {
2483 if (errno == EINVAL) {
2484 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split "
2485 "from this pool into a new one. Use '%s' "
2486 "instead"), "zpool detach");
2487 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg));
2488 }
2489 return (zpool_standard_error(hdl, errno, msg));
2490 }
2491
2492 *newstate = zc.zc_cookie;
2493 return (0);
2494 }
2495
2496 /*
2497 * Take the specified vdev offline
2498 */
2499 int
2500 zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
2501 {
2502 zfs_cmd_t zc = { 0 };
2503 char msg[1024];
2504 nvlist_t *tgt;
2505 boolean_t avail_spare, l2cache;
2506 libzfs_handle_t *hdl = zhp->zpool_hdl;
2507
2508 (void) snprintf(msg, sizeof (msg),
2509 dgettext(TEXT_DOMAIN, "cannot offline %s"), path);
2510
2511 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2512 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
2513 NULL)) == NULL)
2514 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2515
2516 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2517
2518 if (avail_spare)
2519 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2520
2521 zc.zc_cookie = VDEV_STATE_OFFLINE;
2522 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0;
2523
2524 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
2525 return (0);
2526
2527 switch (errno) {
2528 case EBUSY:
2529
2530 /*
2531 * There are no other replicas of this device.
2532 */
2533 return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
2534
2535 case EEXIST:
2536 /*
2537 * The log device has unplayed logs
2538 */
2539 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg));
2540
2541 default:
2542 return (zpool_standard_error(hdl, errno, msg));
2543 }
2544 }
2545
2546 /*
2547 * Mark the given vdev faulted.
2548 */
2549 int
2550 zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
2551 {
2552 zfs_cmd_t zc = { 0 };
2553 char msg[1024];
2554 libzfs_handle_t *hdl = zhp->zpool_hdl;
2555
2556 (void) snprintf(msg, sizeof (msg),
2557 dgettext(TEXT_DOMAIN, "cannot fault %llu"), guid);
2558
2559 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2560 zc.zc_guid = guid;
2561 zc.zc_cookie = VDEV_STATE_FAULTED;
2562 zc.zc_obj = aux;
2563
2564 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
2565 return (0);
2566
2567 switch (errno) {
2568 case EBUSY:
2569
2570 /*
2571 * There are no other replicas of this device.
2572 */
2573 return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
2574
2575 default:
2576 return (zpool_standard_error(hdl, errno, msg));
2577 }
2578
2579 }
2580
2581 /*
2582 * Mark the given vdev degraded.
2583 */
2584 int
2585 zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
2586 {
2587 zfs_cmd_t zc = { 0 };
2588 char msg[1024];
2589 libzfs_handle_t *hdl = zhp->zpool_hdl;
2590
2591 (void) snprintf(msg, sizeof (msg),
2592 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), guid);
2593
2594 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2595 zc.zc_guid = guid;
2596 zc.zc_cookie = VDEV_STATE_DEGRADED;
2597 zc.zc_obj = aux;
2598
2599 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
2600 return (0);
2601
2602 return (zpool_standard_error(hdl, errno, msg));
2603 }
2604
2605 /*
2606 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as
2607 * a hot spare.
2608 */
2609 static boolean_t
2610 is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which)
2611 {
2612 nvlist_t **child;
2613 uint_t c, children;
2614 char *type;
2615
2616 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child,
2617 &children) == 0) {
2618 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE,
2619 &type) == 0);
2620
2621 if (strcmp(type, VDEV_TYPE_SPARE) == 0 &&
2622 children == 2 && child[which] == tgt)
2623 return (B_TRUE);
2624
2625 for (c = 0; c < children; c++)
2626 if (is_replacing_spare(child[c], tgt, which))
2627 return (B_TRUE);
2628 }
2629
2630 return (B_FALSE);
2631 }
2632
2633 /*
2634 * Attach new_disk (fully described by nvroot) to old_disk.
2635 * If 'replacing' is specified, the new disk will replace the old one.
2636 */
2637 int
2638 zpool_vdev_attach(zpool_handle_t *zhp,
2639 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing)
2640 {
2641 zfs_cmd_t zc = { 0 };
2642 char msg[1024];
2643 int ret;
2644 nvlist_t *tgt;
2645 boolean_t avail_spare, l2cache, islog;
2646 uint64_t val;
2647 char *newname;
2648 nvlist_t **child;
2649 uint_t children;
2650 nvlist_t *config_root;
2651 libzfs_handle_t *hdl = zhp->zpool_hdl;
2652 boolean_t rootpool = zpool_is_bootable(zhp);
2653
2654 if (replacing)
2655 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2656 "cannot replace %s with %s"), old_disk, new_disk);
2657 else
2658 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2659 "cannot attach %s to %s"), new_disk, old_disk);
2660
2661 /*
2662 * If this is a root pool, make sure that we're not attaching an
2663 * EFI labeled device.
2664 */
2665 if (rootpool && pool_uses_efi(nvroot)) {
2666 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2667 "EFI labeled devices are not supported on root pools."));
2668 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg));
2669 }
2670
2671 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2672 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache,
2673 &islog)) == 0)
2674 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2675
2676 if (avail_spare)
2677 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2678
2679 if (l2cache)
2680 return (zfs_error(hdl, EZFS_ISL2CACHE, msg));
2681
2682 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2683 zc.zc_cookie = replacing;
2684
2685 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
2686 &child, &children) != 0 || children != 1) {
2687 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2688 "new device must be a single disk"));
2689 return (zfs_error(hdl, EZFS_INVALCONFIG, msg));
2690 }
2691
2692 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
2693 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0);
2694
2695 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL)
2696 return (-1);
2697
2698 /*
2699 * If the target is a hot spare that has been swapped in, we can only
2700 * replace it with another hot spare.
2701 */
2702 if (replacing &&
2703 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 &&
2704 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache,
2705 NULL) == NULL || !avail_spare) &&
2706 is_replacing_spare(config_root, tgt, 1)) {
2707 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2708 "can only be replaced by another hot spare"));
2709 free(newname);
2710 return (zfs_error(hdl, EZFS_BADTARGET, msg));
2711 }
2712
2713 free(newname);
2714
2715 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
2716 return (-1);
2717
2718 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc);
2719
2720 zcmd_free_nvlists(&zc);
2721
2722 if (ret == 0) {
2723 if (rootpool) {
2724 /*
2725 * XXX need a better way to prevent user from
2726 * booting up a half-baked vdev.
2727 */
2728 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make "
2729 "sure to wait until resilver is done "
2730 "before rebooting.\n"));
2731 (void) fprintf(stderr, "\n");
2732 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "If "
2733 "you boot from pool '%s', you may need to update\n"
2734 "boot code on newly attached disk '%s'.\n\n"
2735 "Assuming you use GPT partitioning and 'da0' is "
2736 "your new boot disk\n"
2737 "you may use the following command:\n\n"
2738 "\tgpart bootcode -b /boot/pmbr -p "
2739 "/boot/gptzfsboot -i 1 da0\n\n"),
2740 zhp->zpool_name, new_disk);
2741 }
2742 return (0);
2743 }
2744
2745 switch (errno) {
2746 case ENOTSUP:
2747 /*
2748 * Can't attach to or replace this type of vdev.
2749 */
2750 if (replacing) {
2751 uint64_t version = zpool_get_prop_int(zhp,
2752 ZPOOL_PROP_VERSION, NULL);
2753
2754 if (islog)
2755 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2756 "cannot replace a log with a spare"));
2757 else if (version >= SPA_VERSION_MULTI_REPLACE)
2758 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2759 "already in replacing/spare config; wait "
2760 "for completion or use 'zpool detach'"));
2761 else
2762 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2763 "cannot replace a replacing device"));
2764 } else {
2765 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2766 "can only attach to mirrors and top-level "
2767 "disks"));
2768 }
2769 (void) zfs_error(hdl, EZFS_BADTARGET, msg);
2770 break;
2771
2772 case EINVAL:
2773 /*
2774 * The new device must be a single disk.
2775 */
2776 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2777 "new device must be a single disk"));
2778 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg);
2779 break;
2780
2781 case EBUSY:
2782 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"),
2783 new_disk);
2784 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2785 break;
2786
2787 case EOVERFLOW:
2788 /*
2789 * The new device is too small.
2790 */
2791 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2792 "device is too small"));
2793 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2794 break;
2795
2796 case EDOM:
2797 /*
2798 * The new device has a different alignment requirement.
2799 */
2800 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2801 "devices have different sector alignment"));
2802 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2803 break;
2804
2805 case ENAMETOOLONG:
2806 /*
2807 * The resulting top-level vdev spec won't fit in the label.
2808 */
2809 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg);
2810 break;
2811
2812 default:
2813 (void) zpool_standard_error(hdl, errno, msg);
2814 }
2815
2816 return (-1);
2817 }
2818
2819 /*
2820 * Detach the specified device.
2821 */
2822 int
2823 zpool_vdev_detach(zpool_handle_t *zhp, const char *path)
2824 {
2825 zfs_cmd_t zc = { 0 };
2826 char msg[1024];
2827 nvlist_t *tgt;
2828 boolean_t avail_spare, l2cache;
2829 libzfs_handle_t *hdl = zhp->zpool_hdl;
2830
2831 (void) snprintf(msg, sizeof (msg),
2832 dgettext(TEXT_DOMAIN, "cannot detach %s"), path);
2833
2834 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2835 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
2836 NULL)) == 0)
2837 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2838
2839 if (avail_spare)
2840 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2841
2842 if (l2cache)
2843 return (zfs_error(hdl, EZFS_ISL2CACHE, msg));
2844
2845 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2846
2847 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0)
2848 return (0);
2849
2850 switch (errno) {
2851
2852 case ENOTSUP:
2853 /*
2854 * Can't detach from this type of vdev.
2855 */
2856 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only "
2857 "applicable to mirror and replacing vdevs"));
2858 (void) zfs_error(hdl, EZFS_BADTARGET, msg);
2859 break;
2860
2861 case EBUSY:
2862 /*
2863 * There are no other replicas of this device.
2864 */
2865 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg);
2866 break;
2867
2868 default:
2869 (void) zpool_standard_error(hdl, errno, msg);
2870 }
2871
2872 return (-1);
2873 }
2874
2875 /*
2876 * Find a mirror vdev in the source nvlist.
2877 *
2878 * The mchild array contains a list of disks in one of the top-level mirrors
2879 * of the source pool. The schild array contains a list of disks that the
2880 * user specified on the command line. We loop over the mchild array to
2881 * see if any entry in the schild array matches.
2882 *
2883 * If a disk in the mchild array is found in the schild array, we return
2884 * the index of that entry. Otherwise we return -1.
2885 */
2886 static int
2887 find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren,
2888 nvlist_t **schild, uint_t schildren)
2889 {
2890 uint_t mc;
2891
2892 for (mc = 0; mc < mchildren; mc++) {
2893 uint_t sc;
2894 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp,
2895 mchild[mc], B_FALSE);
2896
2897 for (sc = 0; sc < schildren; sc++) {
2898 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp,
2899 schild[sc], B_FALSE);
2900 boolean_t result = (strcmp(mpath, spath) == 0);
2901
2902 free(spath);
2903 if (result) {
2904 free(mpath);
2905 return (mc);
2906 }
2907 }
2908
2909 free(mpath);
2910 }
2911
2912 return (-1);
2913 }
2914
2915 /*
2916 * Split a mirror pool. If newroot points to null, then a new nvlist
2917 * is generated and it is the responsibility of the caller to free it.
2918 */
2919 int
2920 zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot,
2921 nvlist_t *props, splitflags_t flags)
2922 {
2923 zfs_cmd_t zc = { 0 };
2924 char msg[1024];
2925 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL;
2926 nvlist_t **varray = NULL, *zc_props = NULL;
2927 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0;
2928 libzfs_handle_t *hdl = zhp->zpool_hdl;
2929 uint64_t vers;
2930 boolean_t freelist = B_FALSE, memory_err = B_TRUE;
2931 int retval = 0;
2932
2933 (void) snprintf(msg, sizeof (msg),
2934 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name);
2935
2936 if (!zpool_name_valid(hdl, B_FALSE, newname))
2937 return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
2938
2939 if ((config = zpool_get_config(zhp, NULL)) == NULL) {
2940 (void) fprintf(stderr, gettext("Internal error: unable to "
2941 "retrieve pool configuration\n"));
2942 return (-1);
2943 }
2944
2945 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree)
2946 == 0);
2947 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0);
2948
2949 if (props) {
2950 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
2951 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name,
2952 props, vers, flags, msg)) == NULL)
2953 return (-1);
2954 }
2955
2956 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
2957 &children) != 0) {
2958 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2959 "Source pool is missing vdev tree"));
2960 if (zc_props)
2961 nvlist_free(zc_props);
2962 return (-1);
2963 }
2964
2965 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *));
2966 vcount = 0;
2967
2968 if (*newroot == NULL ||
2969 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN,
2970 &newchild, &newchildren) != 0)
2971 newchildren = 0;
2972
2973 for (c = 0; c < children; c++) {
2974 uint64_t is_log = B_FALSE, is_hole = B_FALSE;
2975 char *type;
2976 nvlist_t **mchild, *vdev;
2977 uint_t mchildren;
2978 int entry;
2979
2980 /*
2981 * Unlike cache & spares, slogs are stored in the
2982 * ZPOOL_CONFIG_CHILDREN array. We filter them out here.
2983 */
2984 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
2985 &is_log);
2986 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE,
2987 &is_hole);
2988 if (is_log || is_hole) {
2989 /*
2990 * Create a hole vdev and put it in the config.
2991 */
2992 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0)
2993 goto out;
2994 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE,
2995 VDEV_TYPE_HOLE) != 0)
2996 goto out;
2997 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE,
2998 1) != 0)
2999 goto out;
3000 if (lastlog == 0)
3001 lastlog = vcount;
3002 varray[vcount++] = vdev;
3003 continue;
3004 }
3005 lastlog = 0;
3006 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type)
3007 == 0);
3008 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) {
3009 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3010 "Source pool must be composed only of mirrors\n"));
3011 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
3012 goto out;
3013 }
3014
3015 verify(nvlist_lookup_nvlist_array(child[c],
3016 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
3017
3018 /* find or add an entry for this top-level vdev */
3019 if (newchildren > 0 &&
3020 (entry = find_vdev_entry(zhp, mchild, mchildren,
3021 newchild, newchildren)) >= 0) {
3022 /* We found a disk that the user specified. */
3023 vdev = mchild[entry];
3024 ++found;
3025 } else {
3026 /* User didn't specify a disk for this vdev. */
3027 vdev = mchild[mchildren - 1];
3028 }
3029
3030 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0)
3031 goto out;
3032 }
3033
3034 /* did we find every disk the user specified? */
3035 if (found != newchildren) {
3036 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must "
3037 "include at most one disk from each mirror"));
3038 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
3039 goto out;
3040 }
3041
3042 /* Prepare the nvlist for populating. */
3043 if (*newroot == NULL) {
3044 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0)
3045 goto out;
3046 freelist = B_TRUE;
3047 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE,
3048 VDEV_TYPE_ROOT) != 0)
3049 goto out;
3050 } else {
3051 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0);
3052 }
3053
3054 /* Add all the children we found */
3055 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray,
3056 lastlog == 0 ? vcount : lastlog) != 0)
3057 goto out;
3058
3059 /*
3060 * If we're just doing a dry run, exit now with success.
3061 */
3062 if (flags.dryrun) {
3063 memory_err = B_FALSE;
3064 freelist = B_FALSE;
3065 goto out;
3066 }
3067
3068 /* now build up the config list & call the ioctl */
3069 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0)
3070 goto out;
3071
3072 if (nvlist_add_nvlist(newconfig,
3073 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 ||
3074 nvlist_add_string(newconfig,
3075 ZPOOL_CONFIG_POOL_NAME, newname) != 0 ||
3076 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0)
3077 goto out;
3078
3079 /*
3080 * The new pool is automatically part of the namespace unless we
3081 * explicitly export it.
3082 */
3083 if (!flags.import)
3084 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT;
3085 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3086 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string));
3087 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0)
3088 goto out;
3089 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
3090 goto out;
3091
3092 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) {
3093 retval = zpool_standard_error(hdl, errno, msg);
3094 goto out;
3095 }
3096
3097 freelist = B_FALSE;
3098 memory_err = B_FALSE;
3099
3100 out:
3101 if (varray != NULL) {
3102 int v;
3103
3104 for (v = 0; v < vcount; v++)
3105 nvlist_free(varray[v]);
3106 free(varray);
3107 }
3108 zcmd_free_nvlists(&zc);
3109 if (zc_props)
3110 nvlist_free(zc_props);
3111 if (newconfig)
3112 nvlist_free(newconfig);
3113 if (freelist) {
3114 nvlist_free(*newroot);
3115 *newroot = NULL;
3116 }
3117
3118 if (retval != 0)
3119 return (retval);
3120
3121 if (memory_err)
3122 return (no_memory(hdl));
3123
3124 return (0);
3125 }
3126
3127 /*
3128 * Remove the given device. Currently, this is supported only for hot spares
3129 * and level 2 cache devices.
3130 */
3131 int
3132 zpool_vdev_remove(zpool_handle_t *zhp, const char *path)
3133 {
3134 zfs_cmd_t zc = { 0 };
3135 char msg[1024];
3136 nvlist_t *tgt;
3137 boolean_t avail_spare, l2cache, islog;
3138 libzfs_handle_t *hdl = zhp->zpool_hdl;
3139 uint64_t version;
3140
3141 (void) snprintf(msg, sizeof (msg),
3142 dgettext(TEXT_DOMAIN, "cannot remove %s"), path);
3143
3144 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3145 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
3146 &islog)) == 0)
3147 return (zfs_error(hdl, EZFS_NODEVICE, msg));
3148 /*
3149 * XXX - this should just go away.
3150 */
3151 if (!avail_spare && !l2cache && !islog) {
3152 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3153 "only inactive hot spares, cache, top-level, "
3154 "or log devices can be removed"));
3155 return (zfs_error(hdl, EZFS_NODEVICE, msg));
3156 }
3157
3158 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
3159 if (islog && version < SPA_VERSION_HOLES) {
3160 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3161 "pool must be upgrade to support log removal"));
3162 return (zfs_error(hdl, EZFS_BADVERSION, msg));
3163 }
3164
3165 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
3166
3167 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0)
3168 return (0);
3169
3170 return (zpool_standard_error(hdl, errno, msg));
3171 }
3172
3173 /*
3174 * Clear the errors for the pool, or the particular device if specified.
3175 */
3176 int
3177 zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl)
3178 {
3179 zfs_cmd_t zc = { 0 };
3180 char msg[1024];
3181 nvlist_t *tgt;
3182 zpool_rewind_policy_t policy;
3183 boolean_t avail_spare, l2cache;
3184 libzfs_handle_t *hdl = zhp->zpool_hdl;
3185 nvlist_t *nvi = NULL;
3186 int error;
3187
3188 if (path)
3189 (void) snprintf(msg, sizeof (msg),
3190 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"),
3191 path);
3192 else
3193 (void) snprintf(msg, sizeof (msg),
3194 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"),
3195 zhp->zpool_name);
3196
3197 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3198 if (path) {
3199 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare,
3200 &l2cache, NULL)) == 0)
3201 return (zfs_error(hdl, EZFS_NODEVICE, msg));
3202
3203 /*
3204 * Don't allow error clearing for hot spares. Do allow
3205 * error clearing for l2cache devices.
3206 */
3207 if (avail_spare)
3208 return (zfs_error(hdl, EZFS_ISSPARE, msg));
3209
3210 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID,
3211 &zc.zc_guid) == 0);
3212 }
3213
3214 zpool_get_rewind_policy(rewindnvl, &policy);
3215 zc.zc_cookie = policy.zrp_request;
3216
3217 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0)
3218 return (-1);
3219
3220 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0)
3221 return (-1);
3222
3223 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 &&
3224 errno == ENOMEM) {
3225 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
3226 zcmd_free_nvlists(&zc);
3227 return (-1);
3228 }
3229 }
3230
3231 if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) &&
3232 errno != EPERM && errno != EACCES)) {
3233 if (policy.zrp_request &
3234 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
3235 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi);
3236 zpool_rewind_exclaim(hdl, zc.zc_name,
3237 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0),
3238 nvi);
3239 nvlist_free(nvi);
3240 }
3241 zcmd_free_nvlists(&zc);
3242 return (0);
3243 }
3244
3245 zcmd_free_nvlists(&zc);
3246 return (zpool_standard_error(hdl, errno, msg));
3247 }
3248
3249 /*
3250 * Similar to zpool_clear(), but takes a GUID (used by fmd).
3251 */
3252 int
3253 zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid)
3254 {
3255 zfs_cmd_t zc = { 0 };
3256 char msg[1024];
3257 libzfs_handle_t *hdl = zhp->zpool_hdl;
3258
3259 (void) snprintf(msg, sizeof (msg),
3260 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"),
3261 guid);
3262
3263 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3264 zc.zc_guid = guid;
3265 zc.zc_cookie = ZPOOL_NO_REWIND;
3266
3267 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0)
3268 return (0);
3269
3270 return (zpool_standard_error(hdl, errno, msg));
3271 }
3272
3273 /*
3274 * Change the GUID for a pool.
3275 */
3276 int
3277 zpool_reguid(zpool_handle_t *zhp)
3278 {
3279 char msg[1024];
3280 libzfs_handle_t *hdl = zhp->zpool_hdl;
3281 zfs_cmd_t zc = { 0 };
3282
3283 (void) snprintf(msg, sizeof (msg),
3284 dgettext(TEXT_DOMAIN, "cannot reguid '%s'"), zhp->zpool_name);
3285
3286 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3287 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REGUID, &zc) == 0)
3288 return (0);
3289
3290 return (zpool_standard_error(hdl, errno, msg));
3291 }
3292
3293 /*
3294 * Reopen the pool.
3295 */
3296 int
3297 zpool_reopen(zpool_handle_t *zhp)
3298 {
3299 zfs_cmd_t zc = { 0 };
3300 char msg[1024];
3301 libzfs_handle_t *hdl = zhp->zpool_hdl;
3302
3303 (void) snprintf(msg, sizeof (msg),
3304 dgettext(TEXT_DOMAIN, "cannot reopen '%s'"),
3305 zhp->zpool_name);
3306
3307 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3308 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REOPEN, &zc) == 0)
3309 return (0);
3310 return (zpool_standard_error(hdl, errno, msg));
3311 }
3312
3313 /*
3314 * Convert from a devid string to a path.
3315 */
3316 static char *
3317 devid_to_path(char *devid_str)
3318 {
3319 ddi_devid_t devid;
3320 char *minor;
3321 char *path;
3322 devid_nmlist_t *list = NULL;
3323 int ret;
3324
3325 if (devid_str_decode(devid_str, &devid, &minor) != 0)
3326 return (NULL);
3327
3328 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list);
3329
3330 devid_str_free(minor);
3331 devid_free(devid);
3332
3333 if (ret != 0)
3334 return (NULL);
3335
3336 /*
3337 * In a case the strdup() fails, we will just return NULL below.
3338 */
3339 path = strdup(list[0].devname);
3340
3341 devid_free_nmlist(list);
3342
3343 return (path);
3344 }
3345
3346 /*
3347 * Convert from a path to a devid string.
3348 */
3349 static char *
3350 path_to_devid(const char *path)
3351 {
3352 #ifdef have_devid
3353 int fd;
3354 ddi_devid_t devid;
3355 char *minor, *ret;
3356
3357 if ((fd = open(path, O_RDONLY)) < 0)
3358 return (NULL);
3359
3360 minor = NULL;
3361 ret = NULL;
3362 if (devid_get(fd, &devid) == 0) {
3363 if (devid_get_minor_name(fd, &minor) == 0)
3364 ret = devid_str_encode(devid, minor);
3365 if (minor != NULL)
3366 devid_str_free(minor);
3367 devid_free(devid);
3368 }
3369 (void) close(fd);
3370
3371 return (ret);
3372 #else
3373 return (NULL);
3374 #endif
3375 }
3376
3377 /*
3378 * Issue the necessary ioctl() to update the stored path value for the vdev. We
3379 * ignore any failure here, since a common case is for an unprivileged user to
3380 * type 'zpool status', and we'll display the correct information anyway.
3381 */
3382 static void
3383 set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path)
3384 {
3385 zfs_cmd_t zc = { 0 };
3386
3387 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3388 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value));
3389 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
3390 &zc.zc_guid) == 0);
3391
3392 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc);
3393 }
3394
3395 /*
3396 * Given a vdev, return the name to display in iostat. If the vdev has a path,
3397 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type.
3398 * We also check if this is a whole disk, in which case we strip off the
3399 * trailing 's0' slice name.
3400 *
3401 * This routine is also responsible for identifying when disks have been
3402 * reconfigured in a new location. The kernel will have opened the device by
3403 * devid, but the path will still refer to the old location. To catch this, we
3404 * first do a path -> devid translation (which is fast for the common case). If
3405 * the devid matches, we're done. If not, we do a reverse devid -> path
3406 * translation and issue the appropriate ioctl() to update the path of the vdev.
3407 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any
3408 * of these checks.
3409 */
3410 char *
3411 zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv,
3412 boolean_t verbose)
3413 {
3414 char *path, *devid;
3415 uint64_t value;
3416 char buf[64];
3417 vdev_stat_t *vs;
3418 uint_t vsc;
3419 int have_stats;
3420 int have_path;
3421
3422 have_stats = nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
3423 (uint64_t **)&vs, &vsc) == 0;
3424 have_path = nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0;
3425
3426 /*
3427 * If the device is not currently present, assume it will not
3428 * come back at the same device path. Display the device by GUID.
3429 */
3430 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &value) == 0 ||
3431 have_path && have_stats && vs->vs_state <= VDEV_STATE_CANT_OPEN) {
3432 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
3433 &value) == 0);
3434 (void) snprintf(buf, sizeof (buf), "%llu",
3435 (u_longlong_t)value);
3436 path = buf;
3437 } else if (have_path) {
3438
3439 /*
3440 * If the device is dead (faulted, offline, etc) then don't
3441 * bother opening it. Otherwise we may be forcing the user to
3442 * open a misbehaving device, which can have undesirable
3443 * effects.
3444 */
3445 if ((have_stats == 0 ||
3446 vs->vs_state >= VDEV_STATE_DEGRADED) &&
3447 zhp != NULL &&
3448 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) {
3449 /*
3450 * Determine if the current path is correct.
3451 */
3452 char *newdevid = path_to_devid(path);
3453
3454 if (newdevid == NULL ||
3455 strcmp(devid, newdevid) != 0) {
3456 char *newpath;
3457
3458 if ((newpath = devid_to_path(devid)) != NULL) {
3459 /*
3460 * Update the path appropriately.
3461 */
3462 set_path(zhp, nv, newpath);
3463 if (nvlist_add_string(nv,
3464 ZPOOL_CONFIG_PATH, newpath) == 0)
3465 verify(nvlist_lookup_string(nv,
3466 ZPOOL_CONFIG_PATH,
3467 &path) == 0);
3468 free(newpath);
3469 }
3470 }
3471
3472 if (newdevid)
3473 devid_str_free(newdevid);
3474 }
3475
3476 #ifdef sun
3477 if (strncmp(path, "/dev/dsk/", 9) == 0)
3478 path += 9;
3479
3480 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
3481 &value) == 0 && value) {
3482 int pathlen = strlen(path);
3483 char *tmp = zfs_strdup(hdl, path);
3484
3485 /*
3486 * If it starts with c#, and ends with "s0", chop
3487 * the "s0" off, or if it ends with "s0/old", remove
3488 * the "s0" from the middle.
3489 */
3490 if (CTD_CHECK(tmp)) {
3491 if (strcmp(&tmp[pathlen - 2], "s0") == 0) {
3492 tmp[pathlen - 2] = '\0';
3493 } else if (pathlen > 6 &&
3494 strcmp(&tmp[pathlen - 6], "s0/old") == 0) {
3495 (void) strcpy(&tmp[pathlen - 6],
3496 "/old");
3497 }
3498 }
3499 return (tmp);
3500 }
3501 #else /* !sun */
3502 if (strncmp(path, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
3503 path += sizeof(_PATH_DEV) - 1;
3504 #endif /* !sun */
3505 } else {
3506 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0);
3507
3508 /*
3509 * If it's a raidz device, we need to stick in the parity level.
3510 */
3511 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) {
3512 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY,
3513 &value) == 0);
3514 (void) snprintf(buf, sizeof (buf), "%s%llu", path,
3515 (u_longlong_t)value);
3516 path = buf;
3517 }
3518
3519 /*
3520 * We identify each top-level vdev by using a <type-id>
3521 * naming convention.
3522 */
3523 if (verbose) {
3524 uint64_t id;
3525
3526 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
3527 &id) == 0);
3528 (void) snprintf(buf, sizeof (buf), "%s-%llu", path,
3529 (u_longlong_t)id);
3530 path = buf;
3531 }
3532 }
3533
3534 return (zfs_strdup(hdl, path));
3535 }
3536
3537 static int
3538 zbookmark_compare(const void *a, const void *b)
3539 {
3540 return (memcmp(a, b, sizeof (zbookmark_phys_t)));
3541 }
3542
3543 /*
3544 * Retrieve the persistent error log, uniquify the members, and return to the
3545 * caller.
3546 */
3547 int
3548 zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp)
3549 {
3550 zfs_cmd_t zc = { 0 };
3551 uint64_t count;
3552 zbookmark_phys_t *zb = NULL;
3553 int i;
3554
3555 /*
3556 * Retrieve the raw error list from the kernel. If the number of errors
3557 * has increased, allocate more space and continue until we get the
3558 * entire list.
3559 */
3560 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT,
3561 &count) == 0);
3562 if (count == 0)
3563 return (0);
3564 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl,
3565 count * sizeof (zbookmark_phys_t))) == (uintptr_t)NULL)
3566 return (-1);
3567 zc.zc_nvlist_dst_size = count;
3568 (void) strcpy(zc.zc_name, zhp->zpool_name);
3569 for (;;) {
3570 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG,
3571 &zc) != 0) {
3572 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3573 if (errno == ENOMEM) {
3574 void *dst;
3575
3576 count = zc.zc_nvlist_dst_size;
3577 dst = zfs_alloc(zhp->zpool_hdl, count *
3578 sizeof (zbookmark_phys_t));
3579 if (dst == NULL)
3580 return (-1);
3581 zc.zc_nvlist_dst = (uintptr_t)dst;
3582 } else {
3583 return (-1);
3584 }
3585 } else {
3586 break;
3587 }
3588 }
3589
3590 /*
3591 * Sort the resulting bookmarks. This is a little confusing due to the
3592 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last
3593 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks
3594 * _not_ copied as part of the process. So we point the start of our
3595 * array appropriate and decrement the total number of elements.
3596 */
3597 zb = ((zbookmark_phys_t *)(uintptr_t)zc.zc_nvlist_dst) +
3598 zc.zc_nvlist_dst_size;
3599 count -= zc.zc_nvlist_dst_size;
3600
3601 qsort(zb, count, sizeof (zbookmark_phys_t), zbookmark_compare);
3602
3603 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0);
3604
3605 /*
3606 * Fill in the nverrlistp with nvlist's of dataset and object numbers.
3607 */
3608 for (i = 0; i < count; i++) {
3609 nvlist_t *nv;
3610
3611 /* ignoring zb_blkid and zb_level for now */
3612 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset &&
3613 zb[i-1].zb_object == zb[i].zb_object)
3614 continue;
3615
3616 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0)
3617 goto nomem;
3618 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET,
3619 zb[i].zb_objset) != 0) {
3620 nvlist_free(nv);
3621 goto nomem;
3622 }
3623 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT,
3624 zb[i].zb_object) != 0) {
3625 nvlist_free(nv);
3626 goto nomem;
3627 }
3628 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) {
3629 nvlist_free(nv);
3630 goto nomem;
3631 }
3632 nvlist_free(nv);
3633 }
3634
3635 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3636 return (0);
3637
3638 nomem:
3639 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3640 return (no_memory(zhp->zpool_hdl));
3641 }
3642
3643 /*
3644 * Upgrade a ZFS pool to the latest on-disk version.
3645 */
3646 int
3647 zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version)
3648 {
3649 zfs_cmd_t zc = { 0 };
3650 libzfs_handle_t *hdl = zhp->zpool_hdl;
3651
3652 (void) strcpy(zc.zc_name, zhp->zpool_name);
3653 zc.zc_cookie = new_version;
3654
3655 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0)
3656 return (zpool_standard_error_fmt(hdl, errno,
3657 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"),
3658 zhp->zpool_name));
3659 return (0);
3660 }
3661
3662 void
3663 zfs_save_arguments(int argc, char **argv, char *string, int len)
3664 {
3665 (void) strlcpy(string, basename(argv[0]), len);
3666 for (int i = 1; i < argc; i++) {
3667 (void) strlcat(string, " ", len);
3668 (void) strlcat(string, argv[i], len);
3669 }
3670 }
3671
3672 int
3673 zpool_log_history(libzfs_handle_t *hdl, const char *message)
3674 {
3675 zfs_cmd_t zc = { 0 };
3676 nvlist_t *args;
3677 int err;
3678
3679 args = fnvlist_alloc();
3680 fnvlist_add_string(args, "message", message);
3681 err = zcmd_write_src_nvlist(hdl, &zc, args);
3682 if (err == 0)
3683 err = ioctl(hdl->libzfs_fd, ZFS_IOC_LOG_HISTORY, &zc);
3684 nvlist_free(args);
3685 zcmd_free_nvlists(&zc);
3686 return (err);
3687 }
3688
3689 /*
3690 * Perform ioctl to get some command history of a pool.
3691 *
3692 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the
3693 * logical offset of the history buffer to start reading from.
3694 *
3695 * Upon return, 'off' is the next logical offset to read from and
3696 * 'len' is the actual amount of bytes read into 'buf'.
3697 */
3698 static int
3699 get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len)
3700 {
3701 zfs_cmd_t zc = { 0 };
3702 libzfs_handle_t *hdl = zhp->zpool_hdl;
3703
3704 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3705
3706 zc.zc_history = (uint64_t)(uintptr_t)buf;
3707 zc.zc_history_len = *len;
3708 zc.zc_history_offset = *off;
3709
3710 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) {
3711 switch (errno) {
3712 case EPERM:
3713 return (zfs_error_fmt(hdl, EZFS_PERM,
3714 dgettext(TEXT_DOMAIN,
3715 "cannot show history for pool '%s'"),
3716 zhp->zpool_name));
3717 case ENOENT:
3718 return (zfs_error_fmt(hdl, EZFS_NOHISTORY,
3719 dgettext(TEXT_DOMAIN, "cannot get history for pool "
3720 "'%s'"), zhp->zpool_name));
3721 case ENOTSUP:
3722 return (zfs_error_fmt(hdl, EZFS_BADVERSION,
3723 dgettext(TEXT_DOMAIN, "cannot get history for pool "
3724 "'%s', pool must be upgraded"), zhp->zpool_name));
3725 default:
3726 return (zpool_standard_error_fmt(hdl, errno,
3727 dgettext(TEXT_DOMAIN,
3728 "cannot get history for '%s'"), zhp->zpool_name));
3729 }
3730 }
3731
3732 *len = zc.zc_history_len;
3733 *off = zc.zc_history_offset;
3734
3735 return (0);
3736 }
3737
3738 /*
3739 * Process the buffer of nvlists, unpacking and storing each nvlist record
3740 * into 'records'. 'leftover' is set to the number of bytes that weren't
3741 * processed as there wasn't a complete record.
3742 */
3743 int
3744 zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover,
3745 nvlist_t ***records, uint_t *numrecords)
3746 {
3747 uint64_t reclen;
3748 nvlist_t *nv;
3749 int i;
3750
3751 while (bytes_read > sizeof (reclen)) {
3752
3753 /* get length of packed record (stored as little endian) */
3754 for (i = 0, reclen = 0; i < sizeof (reclen); i++)
3755 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i);
3756
3757 if (bytes_read < sizeof (reclen) + reclen)
3758 break;
3759
3760 /* unpack record */
3761 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0)
3762 return (ENOMEM);
3763 bytes_read -= sizeof (reclen) + reclen;
3764 buf += sizeof (reclen) + reclen;
3765
3766 /* add record to nvlist array */
3767 (*numrecords)++;
3768 if (ISP2(*numrecords + 1)) {
3769 *records = realloc(*records,
3770 *numrecords * 2 * sizeof (nvlist_t *));
3771 }
3772 (*records)[*numrecords - 1] = nv;
3773 }
3774
3775 *leftover = bytes_read;
3776 return (0);
3777 }
3778
3779 /* from spa_history.c: spa_history_create_obj() */
3780 #define HIS_BUF_LEN_DEF (128 << 10)
3781 #define HIS_BUF_LEN_MAX (1 << 30)
3782
3783 /*
3784 * Retrieve the command history of a pool.
3785 */
3786 int
3787 zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp)
3788 {
3789 char *buf = NULL;
3790 uint64_t bufsize = HIS_BUF_LEN_DEF;
3791 uint64_t off = 0;
3792 nvlist_t **records = NULL;
3793 uint_t numrecords = 0;
3794 int err, i;
3795
3796 if ((buf = malloc(bufsize)) == NULL)
3797 return (ENOMEM);
3798 do {
3799 uint64_t bytes_read = bufsize;
3800 uint64_t leftover;
3801
3802 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0)
3803 break;
3804
3805 /* if nothing else was read in, we're at EOF, just return */
3806 if (bytes_read == 0)
3807 break;
3808
3809 if ((err = zpool_history_unpack(buf, bytes_read,
3810 &leftover, &records, &numrecords)) != 0)
3811 break;
3812 off -= leftover;
3813
3814 /*
3815 * If the history block is too big, double the buffer
3816 * size and try again.
3817 */
3818 if (leftover == bytes_read) {
3819 free(buf);
3820 buf = NULL;
3821
3822 bufsize <<= 1;
3823 if ((bufsize >= HIS_BUF_LEN_MAX) ||
3824 ((buf = malloc(bufsize)) == NULL)) {
3825 err = ENOMEM;
3826 break;
3827 }
3828 }
3829
3830 /* CONSTCOND */
3831 } while (1);
3832 free(buf);
3833
3834 if (!err) {
3835 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0);
3836 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD,
3837 records, numrecords) == 0);
3838 }
3839 for (i = 0; i < numrecords; i++)
3840 nvlist_free(records[i]);
3841 free(records);
3842
3843 return (err);
3844 }
3845
3846 void
3847 zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj,
3848 char *pathname, size_t len)
3849 {
3850 zfs_cmd_t zc = { 0 };
3851 boolean_t mounted = B_FALSE;
3852 char *mntpnt = NULL;
3853 char dsname[MAXNAMELEN];
3854
3855 if (dsobj == 0) {
3856 /* special case for the MOS */
3857 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", obj);
3858 return;
3859 }
3860
3861 /* get the dataset's name */
3862 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3863 zc.zc_obj = dsobj;
3864 if (ioctl(zhp->zpool_hdl->libzfs_fd,
3865 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) {
3866 /* just write out a path of two object numbers */
3867 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>",
3868 dsobj, obj);
3869 return;
3870 }
3871 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname));
3872
3873 /* find out if the dataset is mounted */
3874 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt);
3875
3876 /* get the corrupted object's path */
3877 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name));
3878 zc.zc_obj = obj;
3879 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH,
3880 &zc) == 0) {
3881 if (mounted) {
3882 (void) snprintf(pathname, len, "%s%s", mntpnt,
3883 zc.zc_value);
3884 } else {
3885 (void) snprintf(pathname, len, "%s:%s",
3886 dsname, zc.zc_value);
3887 }
3888 } else {
3889 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, obj);
3890 }
3891 free(mntpnt);
3892 }
3893
3894 #ifdef sun
3895 /*
3896 * Read the EFI label from the config, if a label does not exist then
3897 * pass back the error to the caller. If the caller has passed a non-NULL
3898 * diskaddr argument then we set it to the starting address of the EFI
3899 * partition.
3900 */
3901 static int
3902 read_efi_label(nvlist_t *config, diskaddr_t *sb)
3903 {
3904 char *path;
3905 int fd;
3906 char diskname[MAXPATHLEN];
3907 int err = -1;
3908
3909 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0)
3910 return (err);
3911
3912 (void) snprintf(diskname, sizeof (diskname), "%s%s", RDISK_ROOT,
3913 strrchr(path, '/'));
3914 if ((fd = open(diskname, O_RDONLY|O_NDELAY)) >= 0) {
3915 struct dk_gpt *vtoc;
3916
3917 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) {
3918 if (sb != NULL)
3919 *sb = vtoc->efi_parts[0].p_start;
3920 efi_free(vtoc);
3921 }
3922 (void) close(fd);
3923 }
3924 return (err);
3925 }
3926
3927 /*
3928 * determine where a partition starts on a disk in the current
3929 * configuration
3930 */
3931 static diskaddr_t
3932 find_start_block(nvlist_t *config)
3933 {
3934 nvlist_t **child;
3935 uint_t c, children;
3936 diskaddr_t sb = MAXOFFSET_T;
3937 uint64_t wholedisk;
3938
3939 if (nvlist_lookup_nvlist_array(config,
3940 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) {
3941 if (nvlist_lookup_uint64(config,
3942 ZPOOL_CONFIG_WHOLE_DISK,
3943 &wholedisk) != 0 || !wholedisk) {
3944 return (MAXOFFSET_T);
3945 }
3946 if (read_efi_label(config, &sb) < 0)
3947 sb = MAXOFFSET_T;
3948 return (sb);
3949 }
3950
3951 for (c = 0; c < children; c++) {
3952 sb = find_start_block(child[c]);
3953 if (sb != MAXOFFSET_T) {
3954 return (sb);
3955 }
3956 }
3957 return (MAXOFFSET_T);
3958 }
3959 #endif /* sun */
3960
3961 /*
3962 * Label an individual disk. The name provided is the short name,
3963 * stripped of any leading /dev path.
3964 */
3965 int
3966 zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name)
3967 {
3968 #ifdef sun
3969 char path[MAXPATHLEN];
3970 struct dk_gpt *vtoc;
3971 int fd;
3972 size_t resv = EFI_MIN_RESV_SIZE;
3973 uint64_t slice_size;
3974 diskaddr_t start_block;
3975 char errbuf[1024];
3976
3977 /* prepare an error message just in case */
3978 (void) snprintf(errbuf, sizeof (errbuf),
3979 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name);
3980
3981 if (zhp) {
3982 nvlist_t *nvroot;
3983
3984 if (zpool_is_bootable(zhp)) {
3985 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3986 "EFI labeled devices are not supported on root "
3987 "pools."));
3988 return (zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf));
3989 }
3990
3991 verify(nvlist_lookup_nvlist(zhp->zpool_config,
3992 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
3993
3994 if (zhp->zpool_start_block == 0)
3995 start_block = find_start_block(nvroot);
3996 else
3997 start_block = zhp->zpool_start_block;
3998 zhp->zpool_start_block = start_block;
3999 } else {
4000 /* new pool */
4001 start_block = NEW_START_BLOCK;
4002 }
4003
4004 (void) snprintf(path, sizeof (path), "%s/%s%s", RDISK_ROOT, name,
4005 BACKUP_SLICE);
4006
4007 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) {
4008 /*
4009 * This shouldn't happen. We've long since verified that this
4010 * is a valid device.
4011 */
4012 zfs_error_aux(hdl,
4013 dgettext(TEXT_DOMAIN, "unable to open device"));
4014 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf));
4015 }
4016
4017 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) {
4018 /*
4019 * The only way this can fail is if we run out of memory, or we
4020 * were unable to read the disk's capacity
4021 */
4022 if (errno == ENOMEM)
4023 (void) no_memory(hdl);
4024
4025 (void) close(fd);
4026 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4027 "unable to read disk capacity"), name);
4028
4029 return (zfs_error(hdl, EZFS_NOCAP, errbuf));
4030 }
4031
4032 slice_size = vtoc->efi_last_u_lba + 1;
4033 slice_size -= EFI_MIN_RESV_SIZE;
4034 if (start_block == MAXOFFSET_T)
4035 start_block = NEW_START_BLOCK;
4036 slice_size -= start_block;
4037
4038 vtoc->efi_parts[0].p_start = start_block;
4039 vtoc->efi_parts[0].p_size = slice_size;
4040
4041 /*
4042 * Why we use V_USR: V_BACKUP confuses users, and is considered
4043 * disposable by some EFI utilities (since EFI doesn't have a backup
4044 * slice). V_UNASSIGNED is supposed to be used only for zero size
4045 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT,
4046 * etc. were all pretty specific. V_USR is as close to reality as we
4047 * can get, in the absence of V_OTHER.
4048 */
4049 vtoc->efi_parts[0].p_tag = V_USR;
4050 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs");
4051
4052 vtoc->efi_parts[8].p_start = slice_size + start_block;
4053 vtoc->efi_parts[8].p_size = resv;
4054 vtoc->efi_parts[8].p_tag = V_RESERVED;
4055
4056 if (efi_write(fd, vtoc) != 0) {
4057 /*
4058 * Some block drivers (like pcata) may not support EFI
4059 * GPT labels. Print out a helpful error message dir-
4060 * ecting the user to manually label the disk and give
4061 * a specific slice.
4062 */
4063 (void) close(fd);
4064 efi_free(vtoc);
4065
4066 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4067 "try using fdisk(1M) and then provide a specific slice"));
4068 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf));
4069 }
4070
4071 (void) close(fd);
4072 efi_free(vtoc);
4073 #endif /* sun */
4074 return (0);
4075 }
4076
4077 static boolean_t
4078 supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf)
4079 {
4080 char *type;
4081 nvlist_t **child;
4082 uint_t children, c;
4083
4084 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_TYPE, &type) == 0);
4085 if (strcmp(type, VDEV_TYPE_FILE) == 0 ||
4086 strcmp(type, VDEV_TYPE_HOLE) == 0 ||
4087 strcmp(type, VDEV_TYPE_MISSING) == 0) {
4088 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4089 "vdev type '%s' is not supported"), type);
4090 (void) zfs_error(hdl, EZFS_VDEVNOTSUP, errbuf);
4091 return (B_FALSE);
4092 }
4093 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN,
4094 &child, &children) == 0) {
4095 for (c = 0; c < children; c++) {
4096 if (!supported_dump_vdev_type(hdl, child[c], errbuf))
4097 return (B_FALSE);
4098 }
4099 }
4100 return (B_TRUE);
4101 }
4102
4103 /*
4104 * Check if this zvol is allowable for use as a dump device; zero if
4105 * it is, > 0 if it isn't, < 0 if it isn't a zvol.
4106 *
4107 * Allowable storage configurations include mirrors, all raidz variants, and
4108 * pools with log, cache, and spare devices. Pools which are backed by files or
4109 * have missing/hole vdevs are not suitable.
4110 */
4111 int
4112 zvol_check_dump_config(char *arg)
4113 {
4114 zpool_handle_t *zhp = NULL;
4115 nvlist_t *config, *nvroot;
4116 char *p, *volname;
4117 nvlist_t **top;
4118 uint_t toplevels;
4119 libzfs_handle_t *hdl;
4120 char errbuf[1024];
4121 char poolname[ZPOOL_MAXNAMELEN];
4122 int pathlen = strlen(ZVOL_FULL_DEV_DIR);
4123 int ret = 1;
4124
4125 if (strncmp(arg, ZVOL_FULL_DEV_DIR, pathlen)) {
4126 return (-1);
4127 }
4128
4129 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
4130 "dump is not supported on device '%s'"), arg);
4131
4132 if ((hdl = libzfs_init()) == NULL)
4133 return (1);
4134 libzfs_print_on_error(hdl, B_TRUE);
4135
4136 volname = arg + pathlen;
4137
4138 /* check the configuration of the pool */
4139 if ((p = strchr(volname, '/')) == NULL) {
4140 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4141 "malformed dataset name"));
4142 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
4143 return (1);
4144 } else if (p - volname >= ZFS_MAXNAMELEN) {
4145 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4146 "dataset name is too long"));
4147 (void) zfs_error(hdl, EZFS_NAMETOOLONG, errbuf);
4148 return (1);
4149 } else {
4150 (void) strncpy(poolname, volname, p - volname);
4151 poolname[p - volname] = '\0';
4152 }
4153
4154 if ((zhp = zpool_open(hdl, poolname)) == NULL) {
4155 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4156 "could not open pool '%s'"), poolname);
4157 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf);
4158 goto out;
4159 }
4160 config = zpool_get_config(zhp, NULL);
4161 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
4162 &nvroot) != 0) {
4163 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4164 "could not obtain vdev configuration for '%s'"), poolname);
4165 (void) zfs_error(hdl, EZFS_INVALCONFIG, errbuf);
4166 goto out;
4167 }
4168
4169 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
4170 &top, &toplevels) == 0);
4171
4172 if (!supported_dump_vdev_type(hdl, top[0], errbuf)) {
4173 goto out;
4174 }
4175 ret = 0;
4176
4177 out:
4178 if (zhp)
4179 zpool_close(zhp);
4180 libzfs_fini(hdl);
4181 return (ret);
4182 }
4183