xref: /titanic_41/usr/src/cmd/zpool/zpool_main.c (revision 989f28072d20c73ae0955d6a1e3e2fc74831cb39)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25  * Copyright (c) 2012 by Delphix. All rights reserved.
26  * Copyright (c) 2012 by Frederik Wessels. All rights reserved.
27  */
28 
29 #include <assert.h>
30 #include <ctype.h>
31 #include <dirent.h>
32 #include <errno.h>
33 #include <fcntl.h>
34 #include <libgen.h>
35 #include <libintl.h>
36 #include <libuutil.h>
37 #include <locale.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <strings.h>
42 #include <unistd.h>
43 #include <priv.h>
44 #include <pwd.h>
45 #include <zone.h>
46 #include <zfs_prop.h>
47 #include <sys/fs/zfs.h>
48 #include <sys/stat.h>
49 
50 #include <libzfs.h>
51 
52 #include "zpool_util.h"
53 #include "zfs_comutil.h"
54 #include "zfeature_common.h"
55 
56 #include "statcommon.h"
57 
58 static int zpool_do_create(int, char **);
59 static int zpool_do_destroy(int, char **);
60 
61 static int zpool_do_add(int, char **);
62 static int zpool_do_remove(int, char **);
63 
64 static int zpool_do_list(int, char **);
65 static int zpool_do_iostat(int, char **);
66 static int zpool_do_status(int, char **);
67 
68 static int zpool_do_online(int, char **);
69 static int zpool_do_offline(int, char **);
70 static int zpool_do_clear(int, char **);
71 static int zpool_do_reopen(int, char **);
72 
73 static int zpool_do_reguid(int, char **);
74 
75 static int zpool_do_attach(int, char **);
76 static int zpool_do_detach(int, char **);
77 static int zpool_do_replace(int, char **);
78 static int zpool_do_split(int, char **);
79 
80 static int zpool_do_scrub(int, char **);
81 
82 static int zpool_do_import(int, char **);
83 static int zpool_do_export(int, char **);
84 
85 static int zpool_do_upgrade(int, char **);
86 
87 static int zpool_do_history(int, char **);
88 
89 static int zpool_do_get(int, char **);
90 static int zpool_do_set(int, char **);
91 
92 /*
93  * These libumem hooks provide a reasonable set of defaults for the allocator's
94  * debugging facilities.
95  */
96 
97 #ifdef DEBUG
98 const char *
99 _umem_debug_init(void)
100 {
101 	return ("default,verbose"); /* $UMEM_DEBUG setting */
102 }
103 
104 const char *
105 _umem_logging_init(void)
106 {
107 	return ("fail,contents"); /* $UMEM_LOGGING setting */
108 }
109 #endif
110 
111 typedef enum {
112 	HELP_ADD,
113 	HELP_ATTACH,
114 	HELP_CLEAR,
115 	HELP_CREATE,
116 	HELP_DESTROY,
117 	HELP_DETACH,
118 	HELP_EXPORT,
119 	HELP_HISTORY,
120 	HELP_IMPORT,
121 	HELP_IOSTAT,
122 	HELP_LIST,
123 	HELP_OFFLINE,
124 	HELP_ONLINE,
125 	HELP_REPLACE,
126 	HELP_REMOVE,
127 	HELP_SCRUB,
128 	HELP_STATUS,
129 	HELP_UPGRADE,
130 	HELP_GET,
131 	HELP_SET,
132 	HELP_SPLIT,
133 	HELP_REGUID,
134 	HELP_REOPEN
135 } zpool_help_t;
136 
137 
138 typedef struct zpool_command {
139 	const char	*name;
140 	int		(*func)(int, char **);
141 	zpool_help_t	usage;
142 } zpool_command_t;
143 
144 /*
145  * Master command table.  Each ZFS command has a name, associated function, and
146  * usage message.  The usage messages need to be internationalized, so we have
147  * to have a function to return the usage message based on a command index.
148  *
149  * These commands are organized according to how they are displayed in the usage
150  * message.  An empty command (one with a NULL name) indicates an empty line in
151  * the generic usage message.
152  */
153 static zpool_command_t command_table[] = {
154 	{ "create",	zpool_do_create,	HELP_CREATE		},
155 	{ "destroy",	zpool_do_destroy,	HELP_DESTROY		},
156 	{ NULL },
157 	{ "add",	zpool_do_add,		HELP_ADD		},
158 	{ "remove",	zpool_do_remove,	HELP_REMOVE		},
159 	{ NULL },
160 	{ "list",	zpool_do_list,		HELP_LIST		},
161 	{ "iostat",	zpool_do_iostat,	HELP_IOSTAT		},
162 	{ "status",	zpool_do_status,	HELP_STATUS		},
163 	{ NULL },
164 	{ "online",	zpool_do_online,	HELP_ONLINE		},
165 	{ "offline",	zpool_do_offline,	HELP_OFFLINE		},
166 	{ "clear",	zpool_do_clear,		HELP_CLEAR		},
167 	{ "reopen",	zpool_do_reopen,	HELP_REOPEN		},
168 	{ NULL },
169 	{ "attach",	zpool_do_attach,	HELP_ATTACH		},
170 	{ "detach",	zpool_do_detach,	HELP_DETACH		},
171 	{ "replace",	zpool_do_replace,	HELP_REPLACE		},
172 	{ "split",	zpool_do_split,		HELP_SPLIT		},
173 	{ NULL },
174 	{ "scrub",	zpool_do_scrub,		HELP_SCRUB		},
175 	{ NULL },
176 	{ "import",	zpool_do_import,	HELP_IMPORT		},
177 	{ "export",	zpool_do_export,	HELP_EXPORT		},
178 	{ "upgrade",	zpool_do_upgrade,	HELP_UPGRADE		},
179 	{ "reguid",	zpool_do_reguid,	HELP_REGUID		},
180 	{ NULL },
181 	{ "history",	zpool_do_history,	HELP_HISTORY		},
182 	{ "get",	zpool_do_get,		HELP_GET		},
183 	{ "set",	zpool_do_set,		HELP_SET		},
184 };
185 
186 #define	NCOMMAND	(sizeof (command_table) / sizeof (command_table[0]))
187 
188 static zpool_command_t *current_command;
189 static char history_str[HIS_MAX_RECORD_LEN];
190 static boolean_t log_history = B_TRUE;
191 static uint_t timestamp_fmt = NODATE;
192 
193 static const char *
194 get_usage(zpool_help_t idx) {
195 	switch (idx) {
196 	case HELP_ADD:
197 		return (gettext("\tadd [-fn] <pool> <vdev> ...\n"));
198 	case HELP_ATTACH:
199 		return (gettext("\tattach [-f] <pool> <device> "
200 		    "<new-device>\n"));
201 	case HELP_CLEAR:
202 		return (gettext("\tclear [-nF] <pool> [device]\n"));
203 	case HELP_CREATE:
204 		return (gettext("\tcreate [-fnd] [-o property=value] ... \n"
205 		    "\t    [-O file-system-property=value] ... \n"
206 		    "\t    [-m mountpoint] [-R root] <pool> <vdev> ...\n"));
207 	case HELP_DESTROY:
208 		return (gettext("\tdestroy [-f] <pool>\n"));
209 	case HELP_DETACH:
210 		return (gettext("\tdetach <pool> <device>\n"));
211 	case HELP_EXPORT:
212 		return (gettext("\texport [-f] <pool> ...\n"));
213 	case HELP_HISTORY:
214 		return (gettext("\thistory [-il] [<pool>] ...\n"));
215 	case HELP_IMPORT:
216 		return (gettext("\timport [-d dir] [-D]\n"
217 		    "\timport [-d dir | -c cachefile] [-F [-n]] <pool | id>\n"
218 		    "\timport [-o mntopts] [-o property=value] ... \n"
219 		    "\t    [-d dir | -c cachefile] [-D] [-f] [-m] [-N] "
220 		    "[-R root] [-F [-n]] -a\n"
221 		    "\timport [-o mntopts] [-o property=value] ... \n"
222 		    "\t    [-d dir | -c cachefile] [-D] [-f] [-m] [-N] "
223 		    "[-R root] [-F [-n]]\n"
224 		    "\t    <pool | id> [newpool]\n"));
225 	case HELP_IOSTAT:
226 		return (gettext("\tiostat [-v] [-T d|u] [pool] ... [interval "
227 		    "[count]]\n"));
228 	case HELP_LIST:
229 		return (gettext("\tlist [-H] [-o property[,...]] "
230 		    "[-T d|u] [pool] ... [interval [count]]\n"));
231 	case HELP_OFFLINE:
232 		return (gettext("\toffline [-t] <pool> <device> ...\n"));
233 	case HELP_ONLINE:
234 		return (gettext("\tonline <pool> <device> ...\n"));
235 	case HELP_REPLACE:
236 		return (gettext("\treplace [-f] <pool> <device> "
237 		    "[new-device]\n"));
238 	case HELP_REMOVE:
239 		return (gettext("\tremove <pool> <device> ...\n"));
240 	case HELP_REOPEN:
241 		return (""); /* Undocumented command */
242 	case HELP_SCRUB:
243 		return (gettext("\tscrub [-s] <pool> ...\n"));
244 	case HELP_STATUS:
245 		return (gettext("\tstatus [-vx] [-T d|u] [pool] ... [interval "
246 		    "[count]]\n"));
247 	case HELP_UPGRADE:
248 		return (gettext("\tupgrade\n"
249 		    "\tupgrade -v\n"
250 		    "\tupgrade [-V version] <-a | pool ...>\n"));
251 	case HELP_GET:
252 		return (gettext("\tget <\"all\" | property[,...]> "
253 		    "<pool> ...\n"));
254 	case HELP_SET:
255 		return (gettext("\tset <property=value> <pool> \n"));
256 	case HELP_SPLIT:
257 		return (gettext("\tsplit [-n] [-R altroot] [-o mntopts]\n"
258 		    "\t    [-o property=value] <pool> <newpool> "
259 		    "[<device> ...]\n"));
260 	case HELP_REGUID:
261 		return (gettext("\treguid <pool>\n"));
262 	}
263 
264 	abort();
265 	/* NOTREACHED */
266 }
267 
268 
269 /*
270  * Callback routine that will print out a pool property value.
271  */
272 static int
273 print_prop_cb(int prop, void *cb)
274 {
275 	FILE *fp = cb;
276 
277 	(void) fprintf(fp, "\t%-15s  ", zpool_prop_to_name(prop));
278 
279 	if (zpool_prop_readonly(prop))
280 		(void) fprintf(fp, "  NO   ");
281 	else
282 		(void) fprintf(fp, " YES   ");
283 
284 	if (zpool_prop_values(prop) == NULL)
285 		(void) fprintf(fp, "-\n");
286 	else
287 		(void) fprintf(fp, "%s\n", zpool_prop_values(prop));
288 
289 	return (ZPROP_CONT);
290 }
291 
292 /*
293  * Display usage message.  If we're inside a command, display only the usage for
294  * that command.  Otherwise, iterate over the entire command table and display
295  * a complete usage message.
296  */
297 void
298 usage(boolean_t requested)
299 {
300 	FILE *fp = requested ? stdout : stderr;
301 
302 	if (current_command == NULL) {
303 		int i;
304 
305 		(void) fprintf(fp, gettext("usage: zpool command args ...\n"));
306 		(void) fprintf(fp,
307 		    gettext("where 'command' is one of the following:\n\n"));
308 
309 		for (i = 0; i < NCOMMAND; i++) {
310 			if (command_table[i].name == NULL)
311 				(void) fprintf(fp, "\n");
312 			else
313 				(void) fprintf(fp, "%s",
314 				    get_usage(command_table[i].usage));
315 		}
316 	} else {
317 		(void) fprintf(fp, gettext("usage:\n"));
318 		(void) fprintf(fp, "%s", get_usage(current_command->usage));
319 	}
320 
321 	if (current_command != NULL &&
322 	    ((strcmp(current_command->name, "set") == 0) ||
323 	    (strcmp(current_command->name, "get") == 0) ||
324 	    (strcmp(current_command->name, "list") == 0))) {
325 
326 		(void) fprintf(fp,
327 		    gettext("\nthe following properties are supported:\n"));
328 
329 		(void) fprintf(fp, "\n\t%-15s  %s   %s\n\n",
330 		    "PROPERTY", "EDIT", "VALUES");
331 
332 		/* Iterate over all properties */
333 		(void) zprop_iter(print_prop_cb, fp, B_FALSE, B_TRUE,
334 		    ZFS_TYPE_POOL);
335 
336 		(void) fprintf(fp, "\t%-15s   ", "feature@...");
337 		(void) fprintf(fp, "YES   disabled | enabled | active\n");
338 
339 		(void) fprintf(fp, gettext("\nThe feature@ properties must be "
340 		    "appended with a feature name.\nSee zpool-features(5).\n"));
341 	}
342 
343 	/*
344 	 * See comments at end of main().
345 	 */
346 	if (getenv("ZFS_ABORT") != NULL) {
347 		(void) printf("dumping core by request\n");
348 		abort();
349 	}
350 
351 	exit(requested ? 0 : 2);
352 }
353 
354 void
355 print_vdev_tree(zpool_handle_t *zhp, const char *name, nvlist_t *nv, int indent,
356     boolean_t print_logs)
357 {
358 	nvlist_t **child;
359 	uint_t c, children;
360 	char *vname;
361 
362 	if (name != NULL)
363 		(void) printf("\t%*s%s\n", indent, "", name);
364 
365 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
366 	    &child, &children) != 0)
367 		return;
368 
369 	for (c = 0; c < children; c++) {
370 		uint64_t is_log = B_FALSE;
371 
372 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
373 		    &is_log);
374 		if ((is_log && !print_logs) || (!is_log && print_logs))
375 			continue;
376 
377 		vname = zpool_vdev_name(g_zfs, zhp, child[c], B_FALSE);
378 		print_vdev_tree(zhp, vname, child[c], indent + 2,
379 		    B_FALSE);
380 		free(vname);
381 	}
382 }
383 
384 static boolean_t
385 prop_list_contains_feature(nvlist_t *proplist)
386 {
387 	nvpair_t *nvp;
388 	for (nvp = nvlist_next_nvpair(proplist, NULL); NULL != nvp;
389 	    nvp = nvlist_next_nvpair(proplist, nvp)) {
390 		if (zpool_prop_feature(nvpair_name(nvp)))
391 			return (B_TRUE);
392 	}
393 	return (B_FALSE);
394 }
395 
396 /*
397  * Add a property pair (name, string-value) into a property nvlist.
398  */
399 static int
400 add_prop_list(const char *propname, char *propval, nvlist_t **props,
401     boolean_t poolprop)
402 {
403 	zpool_prop_t prop = ZPROP_INVAL;
404 	zfs_prop_t fprop;
405 	nvlist_t *proplist;
406 	const char *normnm;
407 	char *strval;
408 
409 	if (*props == NULL &&
410 	    nvlist_alloc(props, NV_UNIQUE_NAME, 0) != 0) {
411 		(void) fprintf(stderr,
412 		    gettext("internal error: out of memory\n"));
413 		return (1);
414 	}
415 
416 	proplist = *props;
417 
418 	if (poolprop) {
419 		const char *vname = zpool_prop_to_name(ZPOOL_PROP_VERSION);
420 
421 		if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL &&
422 		    !zpool_prop_feature(propname)) {
423 			(void) fprintf(stderr, gettext("property '%s' is "
424 			    "not a valid pool property\n"), propname);
425 			return (2);
426 		}
427 
428 		/*
429 		 * feature@ properties and version should not be specified
430 		 * at the same time.
431 		 */
432 		if ((prop == ZPROP_INVAL && zpool_prop_feature(propname) &&
433 		    nvlist_exists(proplist, vname)) ||
434 		    (prop == ZPOOL_PROP_VERSION &&
435 		    prop_list_contains_feature(proplist))) {
436 			(void) fprintf(stderr, gettext("'feature@' and "
437 			    "'version' properties cannot be specified "
438 			    "together\n"));
439 			return (2);
440 		}
441 
442 
443 		if (zpool_prop_feature(propname))
444 			normnm = propname;
445 		else
446 			normnm = zpool_prop_to_name(prop);
447 	} else {
448 		if ((fprop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
449 			normnm = zfs_prop_to_name(fprop);
450 		} else {
451 			normnm = propname;
452 		}
453 	}
454 
455 	if (nvlist_lookup_string(proplist, normnm, &strval) == 0 &&
456 	    prop != ZPOOL_PROP_CACHEFILE) {
457 		(void) fprintf(stderr, gettext("property '%s' "
458 		    "specified multiple times\n"), propname);
459 		return (2);
460 	}
461 
462 	if (nvlist_add_string(proplist, normnm, propval) != 0) {
463 		(void) fprintf(stderr, gettext("internal "
464 		    "error: out of memory\n"));
465 		return (1);
466 	}
467 
468 	return (0);
469 }
470 
471 /*
472  * zpool add [-fn] <pool> <vdev> ...
473  *
474  *	-f	Force addition of devices, even if they appear in use
475  *	-n	Do not add the devices, but display the resulting layout if
476  *		they were to be added.
477  *
478  * Adds the given vdevs to 'pool'.  As with create, the bulk of this work is
479  * handled by get_vdev_spec(), which constructs the nvlist needed to pass to
480  * libzfs.
481  */
482 int
483 zpool_do_add(int argc, char **argv)
484 {
485 	boolean_t force = B_FALSE;
486 	boolean_t dryrun = B_FALSE;
487 	int c;
488 	nvlist_t *nvroot;
489 	char *poolname;
490 	int ret;
491 	zpool_handle_t *zhp;
492 	nvlist_t *config;
493 
494 	/* check options */
495 	while ((c = getopt(argc, argv, "fn")) != -1) {
496 		switch (c) {
497 		case 'f':
498 			force = B_TRUE;
499 			break;
500 		case 'n':
501 			dryrun = B_TRUE;
502 			break;
503 		case '?':
504 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
505 			    optopt);
506 			usage(B_FALSE);
507 		}
508 	}
509 
510 	argc -= optind;
511 	argv += optind;
512 
513 	/* get pool name and check number of arguments */
514 	if (argc < 1) {
515 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
516 		usage(B_FALSE);
517 	}
518 	if (argc < 2) {
519 		(void) fprintf(stderr, gettext("missing vdev specification\n"));
520 		usage(B_FALSE);
521 	}
522 
523 	poolname = argv[0];
524 
525 	argc--;
526 	argv++;
527 
528 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
529 		return (1);
530 
531 	if ((config = zpool_get_config(zhp, NULL)) == NULL) {
532 		(void) fprintf(stderr, gettext("pool '%s' is unavailable\n"),
533 		    poolname);
534 		zpool_close(zhp);
535 		return (1);
536 	}
537 
538 	/* pass off to get_vdev_spec for processing */
539 	nvroot = make_root_vdev(zhp, force, !force, B_FALSE, dryrun,
540 	    argc, argv);
541 	if (nvroot == NULL) {
542 		zpool_close(zhp);
543 		return (1);
544 	}
545 
546 	if (dryrun) {
547 		nvlist_t *poolnvroot;
548 
549 		verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
550 		    &poolnvroot) == 0);
551 
552 		(void) printf(gettext("would update '%s' to the following "
553 		    "configuration:\n"), zpool_get_name(zhp));
554 
555 		/* print original main pool and new tree */
556 		print_vdev_tree(zhp, poolname, poolnvroot, 0, B_FALSE);
557 		print_vdev_tree(zhp, NULL, nvroot, 0, B_FALSE);
558 
559 		/* Do the same for the logs */
560 		if (num_logs(poolnvroot) > 0) {
561 			print_vdev_tree(zhp, "logs", poolnvroot, 0, B_TRUE);
562 			print_vdev_tree(zhp, NULL, nvroot, 0, B_TRUE);
563 		} else if (num_logs(nvroot) > 0) {
564 			print_vdev_tree(zhp, "logs", nvroot, 0, B_TRUE);
565 		}
566 
567 		ret = 0;
568 	} else {
569 		ret = (zpool_add(zhp, nvroot) != 0);
570 	}
571 
572 	nvlist_free(nvroot);
573 	zpool_close(zhp);
574 
575 	return (ret);
576 }
577 
578 /*
579  * zpool remove  <pool> <vdev> ...
580  *
581  * Removes the given vdev from the pool.  Currently, this supports removing
582  * spares, cache, and log devices from the pool.
583  */
584 int
585 zpool_do_remove(int argc, char **argv)
586 {
587 	char *poolname;
588 	int i, ret = 0;
589 	zpool_handle_t *zhp;
590 
591 	argc--;
592 	argv++;
593 
594 	/* get pool name and check number of arguments */
595 	if (argc < 1) {
596 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
597 		usage(B_FALSE);
598 	}
599 	if (argc < 2) {
600 		(void) fprintf(stderr, gettext("missing device\n"));
601 		usage(B_FALSE);
602 	}
603 
604 	poolname = argv[0];
605 
606 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
607 		return (1);
608 
609 	for (i = 1; i < argc; i++) {
610 		if (zpool_vdev_remove(zhp, argv[i]) != 0)
611 			ret = 1;
612 	}
613 
614 	return (ret);
615 }
616 
617 /*
618  * zpool create [-fnd] [-o property=value] ...
619  *		[-O file-system-property=value] ...
620  *		[-R root] [-m mountpoint] <pool> <dev> ...
621  *
622  *	-f	Force creation, even if devices appear in use
623  *	-n	Do not create the pool, but display the resulting layout if it
624  *		were to be created.
625  *      -R	Create a pool under an alternate root
626  *      -m	Set default mountpoint for the root dataset.  By default it's
627  *		'/<pool>'
628  *	-o	Set property=value.
629  *	-d	Don't automatically enable all supported pool features
630  *		(individual features can be enabled with -o).
631  *	-O	Set fsproperty=value in the pool's root file system
632  *
633  * Creates the named pool according to the given vdev specification.  The
634  * bulk of the vdev processing is done in get_vdev_spec() in zpool_vdev.c.  Once
635  * we get the nvlist back from get_vdev_spec(), we either print out the contents
636  * (if '-n' was specified), or pass it to libzfs to do the creation.
637  */
638 int
639 zpool_do_create(int argc, char **argv)
640 {
641 	boolean_t force = B_FALSE;
642 	boolean_t dryrun = B_FALSE;
643 	boolean_t enable_all_pool_feat = B_TRUE;
644 	int c;
645 	nvlist_t *nvroot = NULL;
646 	char *poolname;
647 	int ret = 1;
648 	char *altroot = NULL;
649 	char *mountpoint = NULL;
650 	nvlist_t *fsprops = NULL;
651 	nvlist_t *props = NULL;
652 	char *propval;
653 
654 	/* check options */
655 	while ((c = getopt(argc, argv, ":fndR:m:o:O:")) != -1) {
656 		switch (c) {
657 		case 'f':
658 			force = B_TRUE;
659 			break;
660 		case 'n':
661 			dryrun = B_TRUE;
662 			break;
663 		case 'd':
664 			enable_all_pool_feat = B_FALSE;
665 			break;
666 		case 'R':
667 			altroot = optarg;
668 			if (add_prop_list(zpool_prop_to_name(
669 			    ZPOOL_PROP_ALTROOT), optarg, &props, B_TRUE))
670 				goto errout;
671 			if (nvlist_lookup_string(props,
672 			    zpool_prop_to_name(ZPOOL_PROP_CACHEFILE),
673 			    &propval) == 0)
674 				break;
675 			if (add_prop_list(zpool_prop_to_name(
676 			    ZPOOL_PROP_CACHEFILE), "none", &props, B_TRUE))
677 				goto errout;
678 			break;
679 		case 'm':
680 			mountpoint = optarg;
681 			break;
682 		case 'o':
683 			if ((propval = strchr(optarg, '=')) == NULL) {
684 				(void) fprintf(stderr, gettext("missing "
685 				    "'=' for -o option\n"));
686 				goto errout;
687 			}
688 			*propval = '\0';
689 			propval++;
690 
691 			if (add_prop_list(optarg, propval, &props, B_TRUE))
692 				goto errout;
693 
694 			/*
695 			 * If the user is creating a pool that doesn't support
696 			 * feature flags, don't enable any features.
697 			 */
698 			if (zpool_name_to_prop(optarg) == ZPOOL_PROP_VERSION) {
699 				char *end;
700 				u_longlong_t ver;
701 
702 				ver = strtoull(propval, &end, 10);
703 				if (*end == '\0' &&
704 				    ver < SPA_VERSION_FEATURES) {
705 					enable_all_pool_feat = B_FALSE;
706 				}
707 			}
708 			break;
709 		case 'O':
710 			if ((propval = strchr(optarg, '=')) == NULL) {
711 				(void) fprintf(stderr, gettext("missing "
712 				    "'=' for -O option\n"));
713 				goto errout;
714 			}
715 			*propval = '\0';
716 			propval++;
717 
718 			if (add_prop_list(optarg, propval, &fsprops, B_FALSE))
719 				goto errout;
720 			break;
721 		case ':':
722 			(void) fprintf(stderr, gettext("missing argument for "
723 			    "'%c' option\n"), optopt);
724 			goto badusage;
725 		case '?':
726 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
727 			    optopt);
728 			goto badusage;
729 		}
730 	}
731 
732 	argc -= optind;
733 	argv += optind;
734 
735 	/* get pool name and check number of arguments */
736 	if (argc < 1) {
737 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
738 		goto badusage;
739 	}
740 	if (argc < 2) {
741 		(void) fprintf(stderr, gettext("missing vdev specification\n"));
742 		goto badusage;
743 	}
744 
745 	poolname = argv[0];
746 
747 	/*
748 	 * As a special case, check for use of '/' in the name, and direct the
749 	 * user to use 'zfs create' instead.
750 	 */
751 	if (strchr(poolname, '/') != NULL) {
752 		(void) fprintf(stderr, gettext("cannot create '%s': invalid "
753 		    "character '/' in pool name\n"), poolname);
754 		(void) fprintf(stderr, gettext("use 'zfs create' to "
755 		    "create a dataset\n"));
756 		goto errout;
757 	}
758 
759 	/* pass off to get_vdev_spec for bulk processing */
760 	nvroot = make_root_vdev(NULL, force, !force, B_FALSE, dryrun,
761 	    argc - 1, argv + 1);
762 	if (nvroot == NULL)
763 		goto errout;
764 
765 	/* make_root_vdev() allows 0 toplevel children if there are spares */
766 	if (!zfs_allocatable_devs(nvroot)) {
767 		(void) fprintf(stderr, gettext("invalid vdev "
768 		    "specification: at least one toplevel vdev must be "
769 		    "specified\n"));
770 		goto errout;
771 	}
772 
773 	if (altroot != NULL && altroot[0] != '/') {
774 		(void) fprintf(stderr, gettext("invalid alternate root '%s': "
775 		    "must be an absolute path\n"), altroot);
776 		goto errout;
777 	}
778 
779 	/*
780 	 * Check the validity of the mountpoint and direct the user to use the
781 	 * '-m' mountpoint option if it looks like its in use.
782 	 */
783 	if (mountpoint == NULL ||
784 	    (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) != 0 &&
785 	    strcmp(mountpoint, ZFS_MOUNTPOINT_NONE) != 0)) {
786 		char buf[MAXPATHLEN];
787 		DIR *dirp;
788 
789 		if (mountpoint && mountpoint[0] != '/') {
790 			(void) fprintf(stderr, gettext("invalid mountpoint "
791 			    "'%s': must be an absolute path, 'legacy', or "
792 			    "'none'\n"), mountpoint);
793 			goto errout;
794 		}
795 
796 		if (mountpoint == NULL) {
797 			if (altroot != NULL)
798 				(void) snprintf(buf, sizeof (buf), "%s/%s",
799 				    altroot, poolname);
800 			else
801 				(void) snprintf(buf, sizeof (buf), "/%s",
802 				    poolname);
803 		} else {
804 			if (altroot != NULL)
805 				(void) snprintf(buf, sizeof (buf), "%s%s",
806 				    altroot, mountpoint);
807 			else
808 				(void) snprintf(buf, sizeof (buf), "%s",
809 				    mountpoint);
810 		}
811 
812 		if ((dirp = opendir(buf)) == NULL && errno != ENOENT) {
813 			(void) fprintf(stderr, gettext("mountpoint '%s' : "
814 			    "%s\n"), buf, strerror(errno));
815 			(void) fprintf(stderr, gettext("use '-m' "
816 			    "option to provide a different default\n"));
817 			goto errout;
818 		} else if (dirp) {
819 			int count = 0;
820 
821 			while (count < 3 && readdir(dirp) != NULL)
822 				count++;
823 			(void) closedir(dirp);
824 
825 			if (count > 2) {
826 				(void) fprintf(stderr, gettext("mountpoint "
827 				    "'%s' exists and is not empty\n"), buf);
828 				(void) fprintf(stderr, gettext("use '-m' "
829 				    "option to provide a "
830 				    "different default\n"));
831 				goto errout;
832 			}
833 		}
834 	}
835 
836 	if (dryrun) {
837 		/*
838 		 * For a dry run invocation, print out a basic message and run
839 		 * through all the vdevs in the list and print out in an
840 		 * appropriate hierarchy.
841 		 */
842 		(void) printf(gettext("would create '%s' with the "
843 		    "following layout:\n\n"), poolname);
844 
845 		print_vdev_tree(NULL, poolname, nvroot, 0, B_FALSE);
846 		if (num_logs(nvroot) > 0)
847 			print_vdev_tree(NULL, "logs", nvroot, 0, B_TRUE);
848 
849 		ret = 0;
850 	} else {
851 		/*
852 		 * Hand off to libzfs.
853 		 */
854 		if (enable_all_pool_feat) {
855 			int i;
856 			for (i = 0; i < SPA_FEATURES; i++) {
857 				char propname[MAXPATHLEN];
858 				zfeature_info_t *feat = &spa_feature_table[i];
859 
860 				(void) snprintf(propname, sizeof (propname),
861 				    "feature@%s", feat->fi_uname);
862 
863 				/*
864 				 * Skip feature if user specified it manually
865 				 * on the command line.
866 				 */
867 				if (nvlist_exists(props, propname))
868 					continue;
869 
870 				if (add_prop_list(propname, ZFS_FEATURE_ENABLED,
871 				    &props, B_TRUE) != 0)
872 					goto errout;
873 			}
874 		}
875 		if (zpool_create(g_zfs, poolname,
876 		    nvroot, props, fsprops) == 0) {
877 			zfs_handle_t *pool = zfs_open(g_zfs, poolname,
878 			    ZFS_TYPE_FILESYSTEM);
879 			if (pool != NULL) {
880 				if (mountpoint != NULL)
881 					verify(zfs_prop_set(pool,
882 					    zfs_prop_to_name(
883 					    ZFS_PROP_MOUNTPOINT),
884 					    mountpoint) == 0);
885 				if (zfs_mount(pool, NULL, 0) == 0)
886 					ret = zfs_shareall(pool);
887 				zfs_close(pool);
888 			}
889 		} else if (libzfs_errno(g_zfs) == EZFS_INVALIDNAME) {
890 			(void) fprintf(stderr, gettext("pool name may have "
891 			    "been omitted\n"));
892 		}
893 	}
894 
895 errout:
896 	nvlist_free(nvroot);
897 	nvlist_free(fsprops);
898 	nvlist_free(props);
899 	return (ret);
900 badusage:
901 	nvlist_free(fsprops);
902 	nvlist_free(props);
903 	usage(B_FALSE);
904 	return (2);
905 }
906 
907 /*
908  * zpool destroy <pool>
909  *
910  * 	-f	Forcefully unmount any datasets
911  *
912  * Destroy the given pool.  Automatically unmounts any datasets in the pool.
913  */
914 int
915 zpool_do_destroy(int argc, char **argv)
916 {
917 	boolean_t force = B_FALSE;
918 	int c;
919 	char *pool;
920 	zpool_handle_t *zhp;
921 	int ret;
922 
923 	/* check options */
924 	while ((c = getopt(argc, argv, "f")) != -1) {
925 		switch (c) {
926 		case 'f':
927 			force = B_TRUE;
928 			break;
929 		case '?':
930 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
931 			    optopt);
932 			usage(B_FALSE);
933 		}
934 	}
935 
936 	argc -= optind;
937 	argv += optind;
938 
939 	/* check arguments */
940 	if (argc < 1) {
941 		(void) fprintf(stderr, gettext("missing pool argument\n"));
942 		usage(B_FALSE);
943 	}
944 	if (argc > 1) {
945 		(void) fprintf(stderr, gettext("too many arguments\n"));
946 		usage(B_FALSE);
947 	}
948 
949 	pool = argv[0];
950 
951 	if ((zhp = zpool_open_canfail(g_zfs, pool)) == NULL) {
952 		/*
953 		 * As a special case, check for use of '/' in the name, and
954 		 * direct the user to use 'zfs destroy' instead.
955 		 */
956 		if (strchr(pool, '/') != NULL)
957 			(void) fprintf(stderr, gettext("use 'zfs destroy' to "
958 			    "destroy a dataset\n"));
959 		return (1);
960 	}
961 
962 	if (zpool_disable_datasets(zhp, force) != 0) {
963 		(void) fprintf(stderr, gettext("could not destroy '%s': "
964 		    "could not unmount datasets\n"), zpool_get_name(zhp));
965 		return (1);
966 	}
967 
968 	/* The history must be logged as part of the export */
969 	log_history = B_FALSE;
970 
971 	ret = (zpool_destroy(zhp, history_str) != 0);
972 
973 	zpool_close(zhp);
974 
975 	return (ret);
976 }
977 
978 /*
979  * zpool export [-f] <pool> ...
980  *
981  *	-f	Forcefully unmount datasets
982  *
983  * Export the given pools.  By default, the command will attempt to cleanly
984  * unmount any active datasets within the pool.  If the '-f' flag is specified,
985  * then the datasets will be forcefully unmounted.
986  */
987 int
988 zpool_do_export(int argc, char **argv)
989 {
990 	boolean_t force = B_FALSE;
991 	boolean_t hardforce = B_FALSE;
992 	int c;
993 	zpool_handle_t *zhp;
994 	int ret;
995 	int i;
996 
997 	/* check options */
998 	while ((c = getopt(argc, argv, "fF")) != -1) {
999 		switch (c) {
1000 		case 'f':
1001 			force = B_TRUE;
1002 			break;
1003 		case 'F':
1004 			hardforce = B_TRUE;
1005 			break;
1006 		case '?':
1007 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
1008 			    optopt);
1009 			usage(B_FALSE);
1010 		}
1011 	}
1012 
1013 	argc -= optind;
1014 	argv += optind;
1015 
1016 	/* check arguments */
1017 	if (argc < 1) {
1018 		(void) fprintf(stderr, gettext("missing pool argument\n"));
1019 		usage(B_FALSE);
1020 	}
1021 
1022 	ret = 0;
1023 	for (i = 0; i < argc; i++) {
1024 		if ((zhp = zpool_open_canfail(g_zfs, argv[i])) == NULL) {
1025 			ret = 1;
1026 			continue;
1027 		}
1028 
1029 		if (zpool_disable_datasets(zhp, force) != 0) {
1030 			ret = 1;
1031 			zpool_close(zhp);
1032 			continue;
1033 		}
1034 
1035 		/* The history must be logged as part of the export */
1036 		log_history = B_FALSE;
1037 
1038 		if (hardforce) {
1039 			if (zpool_export_force(zhp, history_str) != 0)
1040 				ret = 1;
1041 		} else if (zpool_export(zhp, force, history_str) != 0) {
1042 			ret = 1;
1043 		}
1044 
1045 		zpool_close(zhp);
1046 	}
1047 
1048 	return (ret);
1049 }
1050 
1051 /*
1052  * Given a vdev configuration, determine the maximum width needed for the device
1053  * name column.
1054  */
1055 static int
1056 max_width(zpool_handle_t *zhp, nvlist_t *nv, int depth, int max)
1057 {
1058 	char *name = zpool_vdev_name(g_zfs, zhp, nv, B_TRUE);
1059 	nvlist_t **child;
1060 	uint_t c, children;
1061 	int ret;
1062 
1063 	if (strlen(name) + depth > max)
1064 		max = strlen(name) + depth;
1065 
1066 	free(name);
1067 
1068 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
1069 	    &child, &children) == 0) {
1070 		for (c = 0; c < children; c++)
1071 			if ((ret = max_width(zhp, child[c], depth + 2,
1072 			    max)) > max)
1073 				max = ret;
1074 	}
1075 
1076 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
1077 	    &child, &children) == 0) {
1078 		for (c = 0; c < children; c++)
1079 			if ((ret = max_width(zhp, child[c], depth + 2,
1080 			    max)) > max)
1081 				max = ret;
1082 	}
1083 
1084 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1085 	    &child, &children) == 0) {
1086 		for (c = 0; c < children; c++)
1087 			if ((ret = max_width(zhp, child[c], depth + 2,
1088 			    max)) > max)
1089 				max = ret;
1090 	}
1091 
1092 
1093 	return (max);
1094 }
1095 
1096 typedef struct spare_cbdata {
1097 	uint64_t	cb_guid;
1098 	zpool_handle_t	*cb_zhp;
1099 } spare_cbdata_t;
1100 
1101 static boolean_t
1102 find_vdev(nvlist_t *nv, uint64_t search)
1103 {
1104 	uint64_t guid;
1105 	nvlist_t **child;
1106 	uint_t c, children;
1107 
1108 	if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) == 0 &&
1109 	    search == guid)
1110 		return (B_TRUE);
1111 
1112 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1113 	    &child, &children) == 0) {
1114 		for (c = 0; c < children; c++)
1115 			if (find_vdev(child[c], search))
1116 				return (B_TRUE);
1117 	}
1118 
1119 	return (B_FALSE);
1120 }
1121 
1122 static int
1123 find_spare(zpool_handle_t *zhp, void *data)
1124 {
1125 	spare_cbdata_t *cbp = data;
1126 	nvlist_t *config, *nvroot;
1127 
1128 	config = zpool_get_config(zhp, NULL);
1129 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
1130 	    &nvroot) == 0);
1131 
1132 	if (find_vdev(nvroot, cbp->cb_guid)) {
1133 		cbp->cb_zhp = zhp;
1134 		return (1);
1135 	}
1136 
1137 	zpool_close(zhp);
1138 	return (0);
1139 }
1140 
1141 /*
1142  * Print out configuration state as requested by status_callback.
1143  */
1144 void
1145 print_status_config(zpool_handle_t *zhp, const char *name, nvlist_t *nv,
1146     int namewidth, int depth, boolean_t isspare)
1147 {
1148 	nvlist_t **child;
1149 	uint_t c, children;
1150 	pool_scan_stat_t *ps = NULL;
1151 	vdev_stat_t *vs;
1152 	char rbuf[6], wbuf[6], cbuf[6];
1153 	char *vname;
1154 	uint64_t notpresent;
1155 	spare_cbdata_t cb;
1156 	char *state;
1157 
1158 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1159 	    &child, &children) != 0)
1160 		children = 0;
1161 
1162 	verify(nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
1163 	    (uint64_t **)&vs, &c) == 0);
1164 
1165 	state = zpool_state_to_name(vs->vs_state, vs->vs_aux);
1166 	if (isspare) {
1167 		/*
1168 		 * For hot spares, we use the terms 'INUSE' and 'AVAILABLE' for
1169 		 * online drives.
1170 		 */
1171 		if (vs->vs_aux == VDEV_AUX_SPARED)
1172 			state = "INUSE";
1173 		else if (vs->vs_state == VDEV_STATE_HEALTHY)
1174 			state = "AVAIL";
1175 	}
1176 
1177 	(void) printf("\t%*s%-*s  %-8s", depth, "", namewidth - depth,
1178 	    name, state);
1179 
1180 	if (!isspare) {
1181 		zfs_nicenum(vs->vs_read_errors, rbuf, sizeof (rbuf));
1182 		zfs_nicenum(vs->vs_write_errors, wbuf, sizeof (wbuf));
1183 		zfs_nicenum(vs->vs_checksum_errors, cbuf, sizeof (cbuf));
1184 		(void) printf(" %5s %5s %5s", rbuf, wbuf, cbuf);
1185 	}
1186 
1187 	if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT,
1188 	    &notpresent) == 0) {
1189 		char *path;
1190 		verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0);
1191 		(void) printf("  was %s", path);
1192 	} else if (vs->vs_aux != 0) {
1193 		(void) printf("  ");
1194 
1195 		switch (vs->vs_aux) {
1196 		case VDEV_AUX_OPEN_FAILED:
1197 			(void) printf(gettext("cannot open"));
1198 			break;
1199 
1200 		case VDEV_AUX_BAD_GUID_SUM:
1201 			(void) printf(gettext("missing device"));
1202 			break;
1203 
1204 		case VDEV_AUX_NO_REPLICAS:
1205 			(void) printf(gettext("insufficient replicas"));
1206 			break;
1207 
1208 		case VDEV_AUX_VERSION_NEWER:
1209 			(void) printf(gettext("newer version"));
1210 			break;
1211 
1212 		case VDEV_AUX_UNSUP_FEAT:
1213 			(void) printf(gettext("unsupported feature(s)"));
1214 			break;
1215 
1216 		case VDEV_AUX_SPARED:
1217 			verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
1218 			    &cb.cb_guid) == 0);
1219 			if (zpool_iter(g_zfs, find_spare, &cb) == 1) {
1220 				if (strcmp(zpool_get_name(cb.cb_zhp),
1221 				    zpool_get_name(zhp)) == 0)
1222 					(void) printf(gettext("currently in "
1223 					    "use"));
1224 				else
1225 					(void) printf(gettext("in use by "
1226 					    "pool '%s'"),
1227 					    zpool_get_name(cb.cb_zhp));
1228 				zpool_close(cb.cb_zhp);
1229 			} else {
1230 				(void) printf(gettext("currently in use"));
1231 			}
1232 			break;
1233 
1234 		case VDEV_AUX_ERR_EXCEEDED:
1235 			(void) printf(gettext("too many errors"));
1236 			break;
1237 
1238 		case VDEV_AUX_IO_FAILURE:
1239 			(void) printf(gettext("experienced I/O failures"));
1240 			break;
1241 
1242 		case VDEV_AUX_BAD_LOG:
1243 			(void) printf(gettext("bad intent log"));
1244 			break;
1245 
1246 		case VDEV_AUX_EXTERNAL:
1247 			(void) printf(gettext("external device fault"));
1248 			break;
1249 
1250 		case VDEV_AUX_SPLIT_POOL:
1251 			(void) printf(gettext("split into new pool"));
1252 			break;
1253 
1254 		default:
1255 			(void) printf(gettext("corrupted data"));
1256 			break;
1257 		}
1258 	}
1259 
1260 	(void) nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_SCAN_STATS,
1261 	    (uint64_t **)&ps, &c);
1262 
1263 	if (ps && ps->pss_state == DSS_SCANNING &&
1264 	    vs->vs_scan_processed != 0 && children == 0) {
1265 		(void) printf(gettext("  (%s)"),
1266 		    (ps->pss_func == POOL_SCAN_RESILVER) ?
1267 		    "resilvering" : "repairing");
1268 	}
1269 
1270 	(void) printf("\n");
1271 
1272 	for (c = 0; c < children; c++) {
1273 		uint64_t islog = B_FALSE, ishole = B_FALSE;
1274 
1275 		/* Don't print logs or holes here */
1276 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
1277 		    &islog);
1278 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE,
1279 		    &ishole);
1280 		if (islog || ishole)
1281 			continue;
1282 		vname = zpool_vdev_name(g_zfs, zhp, child[c], B_TRUE);
1283 		print_status_config(zhp, vname, child[c],
1284 		    namewidth, depth + 2, isspare);
1285 		free(vname);
1286 	}
1287 }
1288 
1289 
1290 /*
1291  * Print the configuration of an exported pool.  Iterate over all vdevs in the
1292  * pool, printing out the name and status for each one.
1293  */
1294 void
1295 print_import_config(const char *name, nvlist_t *nv, int namewidth, int depth)
1296 {
1297 	nvlist_t **child;
1298 	uint_t c, children;
1299 	vdev_stat_t *vs;
1300 	char *type, *vname;
1301 
1302 	verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0);
1303 	if (strcmp(type, VDEV_TYPE_MISSING) == 0 ||
1304 	    strcmp(type, VDEV_TYPE_HOLE) == 0)
1305 		return;
1306 
1307 	verify(nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
1308 	    (uint64_t **)&vs, &c) == 0);
1309 
1310 	(void) printf("\t%*s%-*s", depth, "", namewidth - depth, name);
1311 	(void) printf("  %s", zpool_state_to_name(vs->vs_state, vs->vs_aux));
1312 
1313 	if (vs->vs_aux != 0) {
1314 		(void) printf("  ");
1315 
1316 		switch (vs->vs_aux) {
1317 		case VDEV_AUX_OPEN_FAILED:
1318 			(void) printf(gettext("cannot open"));
1319 			break;
1320 
1321 		case VDEV_AUX_BAD_GUID_SUM:
1322 			(void) printf(gettext("missing device"));
1323 			break;
1324 
1325 		case VDEV_AUX_NO_REPLICAS:
1326 			(void) printf(gettext("insufficient replicas"));
1327 			break;
1328 
1329 		case VDEV_AUX_VERSION_NEWER:
1330 			(void) printf(gettext("newer version"));
1331 			break;
1332 
1333 		case VDEV_AUX_UNSUP_FEAT:
1334 			(void) printf(gettext("unsupported feature(s)"));
1335 			break;
1336 
1337 		case VDEV_AUX_ERR_EXCEEDED:
1338 			(void) printf(gettext("too many errors"));
1339 			break;
1340 
1341 		default:
1342 			(void) printf(gettext("corrupted data"));
1343 			break;
1344 		}
1345 	}
1346 	(void) printf("\n");
1347 
1348 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1349 	    &child, &children) != 0)
1350 		return;
1351 
1352 	for (c = 0; c < children; c++) {
1353 		uint64_t is_log = B_FALSE;
1354 
1355 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
1356 		    &is_log);
1357 		if (is_log)
1358 			continue;
1359 
1360 		vname = zpool_vdev_name(g_zfs, NULL, child[c], B_TRUE);
1361 		print_import_config(vname, child[c], namewidth, depth + 2);
1362 		free(vname);
1363 	}
1364 
1365 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
1366 	    &child, &children) == 0) {
1367 		(void) printf(gettext("\tcache\n"));
1368 		for (c = 0; c < children; c++) {
1369 			vname = zpool_vdev_name(g_zfs, NULL, child[c], B_FALSE);
1370 			(void) printf("\t  %s\n", vname);
1371 			free(vname);
1372 		}
1373 	}
1374 
1375 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
1376 	    &child, &children) == 0) {
1377 		(void) printf(gettext("\tspares\n"));
1378 		for (c = 0; c < children; c++) {
1379 			vname = zpool_vdev_name(g_zfs, NULL, child[c], B_FALSE);
1380 			(void) printf("\t  %s\n", vname);
1381 			free(vname);
1382 		}
1383 	}
1384 }
1385 
1386 /*
1387  * Print log vdevs.
1388  * Logs are recorded as top level vdevs in the main pool child array
1389  * but with "is_log" set to 1. We use either print_status_config() or
1390  * print_import_config() to print the top level logs then any log
1391  * children (eg mirrored slogs) are printed recursively - which
1392  * works because only the top level vdev is marked "is_log"
1393  */
1394 static void
1395 print_logs(zpool_handle_t *zhp, nvlist_t *nv, int namewidth, boolean_t verbose)
1396 {
1397 	uint_t c, children;
1398 	nvlist_t **child;
1399 
1400 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, &child,
1401 	    &children) != 0)
1402 		return;
1403 
1404 	(void) printf(gettext("\tlogs\n"));
1405 
1406 	for (c = 0; c < children; c++) {
1407 		uint64_t is_log = B_FALSE;
1408 		char *name;
1409 
1410 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
1411 		    &is_log);
1412 		if (!is_log)
1413 			continue;
1414 		name = zpool_vdev_name(g_zfs, zhp, child[c], B_TRUE);
1415 		if (verbose)
1416 			print_status_config(zhp, name, child[c], namewidth,
1417 			    2, B_FALSE);
1418 		else
1419 			print_import_config(name, child[c], namewidth, 2);
1420 		free(name);
1421 	}
1422 }
1423 
1424 /*
1425  * Display the status for the given pool.
1426  */
1427 static void
1428 show_import(nvlist_t *config)
1429 {
1430 	uint64_t pool_state;
1431 	vdev_stat_t *vs;
1432 	char *name;
1433 	uint64_t guid;
1434 	char *msgid;
1435 	nvlist_t *nvroot;
1436 	int reason;
1437 	const char *health;
1438 	uint_t vsc;
1439 	int namewidth;
1440 	char *comment;
1441 
1442 	verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
1443 	    &name) == 0);
1444 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
1445 	    &guid) == 0);
1446 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
1447 	    &pool_state) == 0);
1448 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
1449 	    &nvroot) == 0);
1450 
1451 	verify(nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_VDEV_STATS,
1452 	    (uint64_t **)&vs, &vsc) == 0);
1453 	health = zpool_state_to_name(vs->vs_state, vs->vs_aux);
1454 
1455 	reason = zpool_import_status(config, &msgid);
1456 
1457 	(void) printf(gettext("   pool: %s\n"), name);
1458 	(void) printf(gettext("     id: %llu\n"), (u_longlong_t)guid);
1459 	(void) printf(gettext("  state: %s"), health);
1460 	if (pool_state == POOL_STATE_DESTROYED)
1461 		(void) printf(gettext(" (DESTROYED)"));
1462 	(void) printf("\n");
1463 
1464 	switch (reason) {
1465 	case ZPOOL_STATUS_MISSING_DEV_R:
1466 	case ZPOOL_STATUS_MISSING_DEV_NR:
1467 	case ZPOOL_STATUS_BAD_GUID_SUM:
1468 		(void) printf(gettext(" status: One or more devices are "
1469 		    "missing from the system.\n"));
1470 		break;
1471 
1472 	case ZPOOL_STATUS_CORRUPT_LABEL_R:
1473 	case ZPOOL_STATUS_CORRUPT_LABEL_NR:
1474 		(void) printf(gettext(" status: One or more devices contains "
1475 		    "corrupted data.\n"));
1476 		break;
1477 
1478 	case ZPOOL_STATUS_CORRUPT_DATA:
1479 		(void) printf(
1480 		    gettext(" status: The pool data is corrupted.\n"));
1481 		break;
1482 
1483 	case ZPOOL_STATUS_OFFLINE_DEV:
1484 		(void) printf(gettext(" status: One or more devices "
1485 		    "are offlined.\n"));
1486 		break;
1487 
1488 	case ZPOOL_STATUS_CORRUPT_POOL:
1489 		(void) printf(gettext(" status: The pool metadata is "
1490 		    "corrupted.\n"));
1491 		break;
1492 
1493 	case ZPOOL_STATUS_VERSION_OLDER:
1494 		(void) printf(gettext(" status: The pool is formatted using a "
1495 		    "legacy on-disk version.\n"));
1496 		break;
1497 
1498 	case ZPOOL_STATUS_VERSION_NEWER:
1499 		(void) printf(gettext(" status: The pool is formatted using an "
1500 		    "incompatible version.\n"));
1501 		break;
1502 
1503 	case ZPOOL_STATUS_FEAT_DISABLED:
1504 		(void) printf(gettext(" status: Some supported features are "
1505 		    "not enabled on the pool.\n"));
1506 		break;
1507 
1508 	case ZPOOL_STATUS_UNSUP_FEAT_READ:
1509 		(void) printf(gettext("status: The pool uses the following "
1510 		    "feature(s) not supported on this sytem:\n"));
1511 		zpool_print_unsup_feat(config);
1512 		break;
1513 
1514 	case ZPOOL_STATUS_UNSUP_FEAT_WRITE:
1515 		(void) printf(gettext("status: The pool can only be accessed "
1516 		    "in read-only mode on this system. It\n\tcannot be "
1517 		    "accessed in read-write mode because it uses the "
1518 		    "following\n\tfeature(s) not supported on this system:\n"));
1519 		zpool_print_unsup_feat(config);
1520 		break;
1521 
1522 	case ZPOOL_STATUS_HOSTID_MISMATCH:
1523 		(void) printf(gettext(" status: The pool was last accessed by "
1524 		    "another system.\n"));
1525 		break;
1526 
1527 	case ZPOOL_STATUS_FAULTED_DEV_R:
1528 	case ZPOOL_STATUS_FAULTED_DEV_NR:
1529 		(void) printf(gettext(" status: One or more devices are "
1530 		    "faulted.\n"));
1531 		break;
1532 
1533 	case ZPOOL_STATUS_BAD_LOG:
1534 		(void) printf(gettext(" status: An intent log record cannot be "
1535 		    "read.\n"));
1536 		break;
1537 
1538 	case ZPOOL_STATUS_RESILVERING:
1539 		(void) printf(gettext(" status: One or more devices were being "
1540 		    "resilvered.\n"));
1541 		break;
1542 
1543 	default:
1544 		/*
1545 		 * No other status can be seen when importing pools.
1546 		 */
1547 		assert(reason == ZPOOL_STATUS_OK);
1548 	}
1549 
1550 	/*
1551 	 * Print out an action according to the overall state of the pool.
1552 	 */
1553 	if (vs->vs_state == VDEV_STATE_HEALTHY) {
1554 		if (reason == ZPOOL_STATUS_VERSION_OLDER ||
1555 		    reason == ZPOOL_STATUS_FEAT_DISABLED) {
1556 			(void) printf(gettext(" action: The pool can be "
1557 			    "imported using its name or numeric identifier, "
1558 			    "though\n\tsome features will not be available "
1559 			    "without an explicit 'zpool upgrade'.\n"));
1560 		} else if (reason == ZPOOL_STATUS_HOSTID_MISMATCH) {
1561 			(void) printf(gettext(" action: The pool can be "
1562 			    "imported using its name or numeric "
1563 			    "identifier and\n\tthe '-f' flag.\n"));
1564 		} else {
1565 			(void) printf(gettext(" action: The pool can be "
1566 			    "imported using its name or numeric "
1567 			    "identifier.\n"));
1568 		}
1569 	} else if (vs->vs_state == VDEV_STATE_DEGRADED) {
1570 		(void) printf(gettext(" action: The pool can be imported "
1571 		    "despite missing or damaged devices.  The\n\tfault "
1572 		    "tolerance of the pool may be compromised if imported.\n"));
1573 	} else {
1574 		switch (reason) {
1575 		case ZPOOL_STATUS_VERSION_NEWER:
1576 			(void) printf(gettext(" action: The pool cannot be "
1577 			    "imported.  Access the pool on a system running "
1578 			    "newer\n\tsoftware, or recreate the pool from "
1579 			    "backup.\n"));
1580 			break;
1581 		case ZPOOL_STATUS_UNSUP_FEAT_READ:
1582 			(void) printf(gettext("action: The pool cannot be "
1583 			    "imported. Access the pool on a system that "
1584 			    "supports\n\tthe required feature(s), or recreate "
1585 			    "the pool from backup.\n"));
1586 			break;
1587 		case ZPOOL_STATUS_UNSUP_FEAT_WRITE:
1588 			(void) printf(gettext("action: The pool cannot be "
1589 			    "imported in read-write mode. Import the pool "
1590 			    "with\n"
1591 			    "\t\"-o readonly=on\", access the pool on a system "
1592 			    "that supports the\n\trequired feature(s), or "
1593 			    "recreate the pool from backup.\n"));
1594 			break;
1595 		case ZPOOL_STATUS_MISSING_DEV_R:
1596 		case ZPOOL_STATUS_MISSING_DEV_NR:
1597 		case ZPOOL_STATUS_BAD_GUID_SUM:
1598 			(void) printf(gettext(" action: The pool cannot be "
1599 			    "imported. Attach the missing\n\tdevices and try "
1600 			    "again.\n"));
1601 			break;
1602 		default:
1603 			(void) printf(gettext(" action: The pool cannot be "
1604 			    "imported due to damaged devices or data.\n"));
1605 		}
1606 	}
1607 
1608 	/* Print the comment attached to the pool. */
1609 	if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0)
1610 		(void) printf(gettext("comment: %s\n"), comment);
1611 
1612 	/*
1613 	 * If the state is "closed" or "can't open", and the aux state
1614 	 * is "corrupt data":
1615 	 */
1616 	if (((vs->vs_state == VDEV_STATE_CLOSED) ||
1617 	    (vs->vs_state == VDEV_STATE_CANT_OPEN)) &&
1618 	    (vs->vs_aux == VDEV_AUX_CORRUPT_DATA)) {
1619 		if (pool_state == POOL_STATE_DESTROYED)
1620 			(void) printf(gettext("\tThe pool was destroyed, "
1621 			    "but can be imported using the '-Df' flags.\n"));
1622 		else if (pool_state != POOL_STATE_EXPORTED)
1623 			(void) printf(gettext("\tThe pool may be active on "
1624 			    "another system, but can be imported using\n\t"
1625 			    "the '-f' flag.\n"));
1626 	}
1627 
1628 	if (msgid != NULL)
1629 		(void) printf(gettext("   see: http://illumos.org/msg/%s\n"),
1630 		    msgid);
1631 
1632 	(void) printf(gettext(" config:\n\n"));
1633 
1634 	namewidth = max_width(NULL, nvroot, 0, 0);
1635 	if (namewidth < 10)
1636 		namewidth = 10;
1637 
1638 	print_import_config(name, nvroot, namewidth, 0);
1639 	if (num_logs(nvroot) > 0)
1640 		print_logs(NULL, nvroot, namewidth, B_FALSE);
1641 
1642 	if (reason == ZPOOL_STATUS_BAD_GUID_SUM) {
1643 		(void) printf(gettext("\n\tAdditional devices are known to "
1644 		    "be part of this pool, though their\n\texact "
1645 		    "configuration cannot be determined.\n"));
1646 	}
1647 }
1648 
1649 /*
1650  * Perform the import for the given configuration.  This passes the heavy
1651  * lifting off to zpool_import_props(), and then mounts the datasets contained
1652  * within the pool.
1653  */
1654 static int
1655 do_import(nvlist_t *config, const char *newname, const char *mntopts,
1656     nvlist_t *props, int flags)
1657 {
1658 	zpool_handle_t *zhp;
1659 	char *name;
1660 	uint64_t state;
1661 	uint64_t version;
1662 
1663 	verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
1664 	    &name) == 0);
1665 
1666 	verify(nvlist_lookup_uint64(config,
1667 	    ZPOOL_CONFIG_POOL_STATE, &state) == 0);
1668 	verify(nvlist_lookup_uint64(config,
1669 	    ZPOOL_CONFIG_VERSION, &version) == 0);
1670 	if (!SPA_VERSION_IS_SUPPORTED(version)) {
1671 		(void) fprintf(stderr, gettext("cannot import '%s': pool "
1672 		    "is formatted using an unsupported ZFS version\n"), name);
1673 		return (1);
1674 	} else if (state != POOL_STATE_EXPORTED &&
1675 	    !(flags & ZFS_IMPORT_ANY_HOST)) {
1676 		uint64_t hostid;
1677 
1678 		if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID,
1679 		    &hostid) == 0) {
1680 			if ((unsigned long)hostid != gethostid()) {
1681 				char *hostname;
1682 				uint64_t timestamp;
1683 				time_t t;
1684 
1685 				verify(nvlist_lookup_string(config,
1686 				    ZPOOL_CONFIG_HOSTNAME, &hostname) == 0);
1687 				verify(nvlist_lookup_uint64(config,
1688 				    ZPOOL_CONFIG_TIMESTAMP, &timestamp) == 0);
1689 				t = timestamp;
1690 				(void) fprintf(stderr, gettext("cannot import "
1691 				    "'%s': pool may be in use from other "
1692 				    "system, it was last accessed by %s "
1693 				    "(hostid: 0x%lx) on %s"), name, hostname,
1694 				    (unsigned long)hostid,
1695 				    asctime(localtime(&t)));
1696 				(void) fprintf(stderr, gettext("use '-f' to "
1697 				    "import anyway\n"));
1698 				return (1);
1699 			}
1700 		} else {
1701 			(void) fprintf(stderr, gettext("cannot import '%s': "
1702 			    "pool may be in use from other system\n"), name);
1703 			(void) fprintf(stderr, gettext("use '-f' to import "
1704 			    "anyway\n"));
1705 			return (1);
1706 		}
1707 	}
1708 
1709 	if (zpool_import_props(g_zfs, config, newname, props, flags) != 0)
1710 		return (1);
1711 
1712 	if (newname != NULL)
1713 		name = (char *)newname;
1714 
1715 	if ((zhp = zpool_open_canfail(g_zfs, name)) == NULL)
1716 		return (1);
1717 
1718 	if (zpool_get_state(zhp) != POOL_STATE_UNAVAIL &&
1719 	    !(flags & ZFS_IMPORT_ONLY) &&
1720 	    zpool_enable_datasets(zhp, mntopts, 0) != 0) {
1721 		zpool_close(zhp);
1722 		return (1);
1723 	}
1724 
1725 	zpool_close(zhp);
1726 	return (0);
1727 }
1728 
1729 /*
1730  * zpool import [-d dir] [-D]
1731  *       import [-o mntopts] [-o prop=value] ... [-R root] [-D]
1732  *              [-d dir | -c cachefile] [-f] -a
1733  *       import [-o mntopts] [-o prop=value] ... [-R root] [-D]
1734  *              [-d dir | -c cachefile] [-f] [-n] [-F] <pool | id> [newpool]
1735  *
1736  *	 -c	Read pool information from a cachefile instead of searching
1737  *		devices.
1738  *
1739  *       -d	Scan in a specific directory, other than /dev/dsk.  More than
1740  *		one directory can be specified using multiple '-d' options.
1741  *
1742  *       -D     Scan for previously destroyed pools or import all or only
1743  *              specified destroyed pools.
1744  *
1745  *       -R	Temporarily import the pool, with all mountpoints relative to
1746  *		the given root.  The pool will remain exported when the machine
1747  *		is rebooted.
1748  *
1749  *       -V	Import even in the presence of faulted vdevs.  This is an
1750  *       	intentionally undocumented option for testing purposes, and
1751  *       	treats the pool configuration as complete, leaving any bad
1752  *		vdevs in the FAULTED state. In other words, it does verbatim
1753  *		import.
1754  *
1755  *       -f	Force import, even if it appears that the pool is active.
1756  *
1757  *       -F     Attempt rewind if necessary.
1758  *
1759  *       -n     See if rewind would work, but don't actually rewind.
1760  *
1761  *       -N     Import the pool but don't mount datasets.
1762  *
1763  *       -T     Specify a starting txg to use for import. This option is
1764  *       	intentionally undocumented option for testing purposes.
1765  *
1766  *       -a	Import all pools found.
1767  *
1768  *       -o	Set property=value and/or temporary mount options (without '=').
1769  *
1770  * The import command scans for pools to import, and import pools based on pool
1771  * name and GUID.  The pool can also be renamed as part of the import process.
1772  */
1773 int
1774 zpool_do_import(int argc, char **argv)
1775 {
1776 	char **searchdirs = NULL;
1777 	int nsearch = 0;
1778 	int c;
1779 	int err = 0;
1780 	nvlist_t *pools = NULL;
1781 	boolean_t do_all = B_FALSE;
1782 	boolean_t do_destroyed = B_FALSE;
1783 	char *mntopts = NULL;
1784 	nvpair_t *elem;
1785 	nvlist_t *config;
1786 	uint64_t searchguid = 0;
1787 	char *searchname = NULL;
1788 	char *propval;
1789 	nvlist_t *found_config;
1790 	nvlist_t *policy = NULL;
1791 	nvlist_t *props = NULL;
1792 	boolean_t first;
1793 	int flags = ZFS_IMPORT_NORMAL;
1794 	uint32_t rewind_policy = ZPOOL_NO_REWIND;
1795 	boolean_t dryrun = B_FALSE;
1796 	boolean_t do_rewind = B_FALSE;
1797 	boolean_t xtreme_rewind = B_FALSE;
1798 	uint64_t pool_state, txg = -1ULL;
1799 	char *cachefile = NULL;
1800 	importargs_t idata = { 0 };
1801 	char *endptr;
1802 
1803 	/* check options */
1804 	while ((c = getopt(argc, argv, ":aCc:d:DEfFmnNo:rR:T:VX")) != -1) {
1805 		switch (c) {
1806 		case 'a':
1807 			do_all = B_TRUE;
1808 			break;
1809 		case 'c':
1810 			cachefile = optarg;
1811 			break;
1812 		case 'd':
1813 			if (searchdirs == NULL) {
1814 				searchdirs = safe_malloc(sizeof (char *));
1815 			} else {
1816 				char **tmp = safe_malloc((nsearch + 1) *
1817 				    sizeof (char *));
1818 				bcopy(searchdirs, tmp, nsearch *
1819 				    sizeof (char *));
1820 				free(searchdirs);
1821 				searchdirs = tmp;
1822 			}
1823 			searchdirs[nsearch++] = optarg;
1824 			break;
1825 		case 'D':
1826 			do_destroyed = B_TRUE;
1827 			break;
1828 		case 'f':
1829 			flags |= ZFS_IMPORT_ANY_HOST;
1830 			break;
1831 		case 'F':
1832 			do_rewind = B_TRUE;
1833 			break;
1834 		case 'm':
1835 			flags |= ZFS_IMPORT_MISSING_LOG;
1836 			break;
1837 		case 'n':
1838 			dryrun = B_TRUE;
1839 			break;
1840 		case 'N':
1841 			flags |= ZFS_IMPORT_ONLY;
1842 			break;
1843 		case 'o':
1844 			if ((propval = strchr(optarg, '=')) != NULL) {
1845 				*propval = '\0';
1846 				propval++;
1847 				if (add_prop_list(optarg, propval,
1848 				    &props, B_TRUE))
1849 					goto error;
1850 			} else {
1851 				mntopts = optarg;
1852 			}
1853 			break;
1854 		case 'R':
1855 			if (add_prop_list(zpool_prop_to_name(
1856 			    ZPOOL_PROP_ALTROOT), optarg, &props, B_TRUE))
1857 				goto error;
1858 			if (nvlist_lookup_string(props,
1859 			    zpool_prop_to_name(ZPOOL_PROP_CACHEFILE),
1860 			    &propval) == 0)
1861 				break;
1862 			if (add_prop_list(zpool_prop_to_name(
1863 			    ZPOOL_PROP_CACHEFILE), "none", &props, B_TRUE))
1864 				goto error;
1865 			break;
1866 		case 'T':
1867 			errno = 0;
1868 			txg = strtoull(optarg, &endptr, 10);
1869 			if (errno != 0 || *endptr != '\0') {
1870 				(void) fprintf(stderr,
1871 				    gettext("invalid txg value\n"));
1872 				usage(B_FALSE);
1873 			}
1874 			rewind_policy = ZPOOL_DO_REWIND | ZPOOL_EXTREME_REWIND;
1875 			break;
1876 		case 'V':
1877 			flags |= ZFS_IMPORT_VERBATIM;
1878 			break;
1879 		case 'X':
1880 			xtreme_rewind = B_TRUE;
1881 			break;
1882 		case ':':
1883 			(void) fprintf(stderr, gettext("missing argument for "
1884 			    "'%c' option\n"), optopt);
1885 			usage(B_FALSE);
1886 			break;
1887 		case '?':
1888 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
1889 			    optopt);
1890 			usage(B_FALSE);
1891 		}
1892 	}
1893 
1894 	argc -= optind;
1895 	argv += optind;
1896 
1897 	if (cachefile && nsearch != 0) {
1898 		(void) fprintf(stderr, gettext("-c is incompatible with -d\n"));
1899 		usage(B_FALSE);
1900 	}
1901 
1902 	if ((dryrun || xtreme_rewind) && !do_rewind) {
1903 		(void) fprintf(stderr,
1904 		    gettext("-n or -X only meaningful with -F\n"));
1905 		usage(B_FALSE);
1906 	}
1907 	if (dryrun)
1908 		rewind_policy = ZPOOL_TRY_REWIND;
1909 	else if (do_rewind)
1910 		rewind_policy = ZPOOL_DO_REWIND;
1911 	if (xtreme_rewind)
1912 		rewind_policy |= ZPOOL_EXTREME_REWIND;
1913 
1914 	/* In the future, we can capture further policy and include it here */
1915 	if (nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) != 0 ||
1916 	    nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, txg) != 0 ||
1917 	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind_policy) != 0)
1918 		goto error;
1919 
1920 	if (searchdirs == NULL) {
1921 		searchdirs = safe_malloc(sizeof (char *));
1922 		searchdirs[0] = "/dev/dsk";
1923 		nsearch = 1;
1924 	}
1925 
1926 	/* check argument count */
1927 	if (do_all) {
1928 		if (argc != 0) {
1929 			(void) fprintf(stderr, gettext("too many arguments\n"));
1930 			usage(B_FALSE);
1931 		}
1932 	} else {
1933 		if (argc > 2) {
1934 			(void) fprintf(stderr, gettext("too many arguments\n"));
1935 			usage(B_FALSE);
1936 		}
1937 
1938 		/*
1939 		 * Check for the SYS_CONFIG privilege.  We do this explicitly
1940 		 * here because otherwise any attempt to discover pools will
1941 		 * silently fail.
1942 		 */
1943 		if (argc == 0 && !priv_ineffect(PRIV_SYS_CONFIG)) {
1944 			(void) fprintf(stderr, gettext("cannot "
1945 			    "discover pools: permission denied\n"));
1946 			free(searchdirs);
1947 			nvlist_free(policy);
1948 			return (1);
1949 		}
1950 	}
1951 
1952 	/*
1953 	 * Depending on the arguments given, we do one of the following:
1954 	 *
1955 	 *	<none>	Iterate through all pools and display information about
1956 	 *		each one.
1957 	 *
1958 	 *	-a	Iterate through all pools and try to import each one.
1959 	 *
1960 	 *	<id>	Find the pool that corresponds to the given GUID/pool
1961 	 *		name and import that one.
1962 	 *
1963 	 *	-D	Above options applies only to destroyed pools.
1964 	 */
1965 	if (argc != 0) {
1966 		char *endptr;
1967 
1968 		errno = 0;
1969 		searchguid = strtoull(argv[0], &endptr, 10);
1970 		if (errno != 0 || *endptr != '\0')
1971 			searchname = argv[0];
1972 		found_config = NULL;
1973 
1974 		/*
1975 		 * User specified a name or guid.  Ensure it's unique.
1976 		 */
1977 		idata.unique = B_TRUE;
1978 	}
1979 
1980 
1981 	idata.path = searchdirs;
1982 	idata.paths = nsearch;
1983 	idata.poolname = searchname;
1984 	idata.guid = searchguid;
1985 	idata.cachefile = cachefile;
1986 
1987 	pools = zpool_search_import(g_zfs, &idata);
1988 
1989 	if (pools != NULL && idata.exists &&
1990 	    (argc == 1 || strcmp(argv[0], argv[1]) == 0)) {
1991 		(void) fprintf(stderr, gettext("cannot import '%s': "
1992 		    "a pool with that name already exists\n"),
1993 		    argv[0]);
1994 		(void) fprintf(stderr, gettext("use the form '%s "
1995 		    "<pool | id> <newpool>' to give it a new name\n"),
1996 		    "zpool import");
1997 		err = 1;
1998 	} else if (pools == NULL && idata.exists) {
1999 		(void) fprintf(stderr, gettext("cannot import '%s': "
2000 		    "a pool with that name is already created/imported,\n"),
2001 		    argv[0]);
2002 		(void) fprintf(stderr, gettext("and no additional pools "
2003 		    "with that name were found\n"));
2004 		err = 1;
2005 	} else if (pools == NULL) {
2006 		if (argc != 0) {
2007 			(void) fprintf(stderr, gettext("cannot import '%s': "
2008 			    "no such pool available\n"), argv[0]);
2009 		}
2010 		err = 1;
2011 	}
2012 
2013 	if (err == 1) {
2014 		free(searchdirs);
2015 		nvlist_free(policy);
2016 		return (1);
2017 	}
2018 
2019 	/*
2020 	 * At this point we have a list of import candidate configs. Even if
2021 	 * we were searching by pool name or guid, we still need to
2022 	 * post-process the list to deal with pool state and possible
2023 	 * duplicate names.
2024 	 */
2025 	err = 0;
2026 	elem = NULL;
2027 	first = B_TRUE;
2028 	while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2029 
2030 		verify(nvpair_value_nvlist(elem, &config) == 0);
2031 
2032 		verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
2033 		    &pool_state) == 0);
2034 		if (!do_destroyed && pool_state == POOL_STATE_DESTROYED)
2035 			continue;
2036 		if (do_destroyed && pool_state != POOL_STATE_DESTROYED)
2037 			continue;
2038 
2039 		verify(nvlist_add_nvlist(config, ZPOOL_REWIND_POLICY,
2040 		    policy) == 0);
2041 
2042 		if (argc == 0) {
2043 			if (first)
2044 				first = B_FALSE;
2045 			else if (!do_all)
2046 				(void) printf("\n");
2047 
2048 			if (do_all) {
2049 				err |= do_import(config, NULL, mntopts,
2050 				    props, flags);
2051 			} else {
2052 				show_import(config);
2053 			}
2054 		} else if (searchname != NULL) {
2055 			char *name;
2056 
2057 			/*
2058 			 * We are searching for a pool based on name.
2059 			 */
2060 			verify(nvlist_lookup_string(config,
2061 			    ZPOOL_CONFIG_POOL_NAME, &name) == 0);
2062 
2063 			if (strcmp(name, searchname) == 0) {
2064 				if (found_config != NULL) {
2065 					(void) fprintf(stderr, gettext(
2066 					    "cannot import '%s': more than "
2067 					    "one matching pool\n"), searchname);
2068 					(void) fprintf(stderr, gettext(
2069 					    "import by numeric ID instead\n"));
2070 					err = B_TRUE;
2071 				}
2072 				found_config = config;
2073 			}
2074 		} else {
2075 			uint64_t guid;
2076 
2077 			/*
2078 			 * Search for a pool by guid.
2079 			 */
2080 			verify(nvlist_lookup_uint64(config,
2081 			    ZPOOL_CONFIG_POOL_GUID, &guid) == 0);
2082 
2083 			if (guid == searchguid)
2084 				found_config = config;
2085 		}
2086 	}
2087 
2088 	/*
2089 	 * If we were searching for a specific pool, verify that we found a
2090 	 * pool, and then do the import.
2091 	 */
2092 	if (argc != 0 && err == 0) {
2093 		if (found_config == NULL) {
2094 			(void) fprintf(stderr, gettext("cannot import '%s': "
2095 			    "no such pool available\n"), argv[0]);
2096 			err = B_TRUE;
2097 		} else {
2098 			err |= do_import(found_config, argc == 1 ? NULL :
2099 			    argv[1], mntopts, props, flags);
2100 		}
2101 	}
2102 
2103 	/*
2104 	 * If we were just looking for pools, report an error if none were
2105 	 * found.
2106 	 */
2107 	if (argc == 0 && first)
2108 		(void) fprintf(stderr,
2109 		    gettext("no pools available to import\n"));
2110 
2111 error:
2112 	nvlist_free(props);
2113 	nvlist_free(pools);
2114 	nvlist_free(policy);
2115 	free(searchdirs);
2116 
2117 	return (err ? 1 : 0);
2118 }
2119 
2120 typedef struct iostat_cbdata {
2121 	boolean_t cb_verbose;
2122 	int cb_namewidth;
2123 	int cb_iteration;
2124 	zpool_list_t *cb_list;
2125 } iostat_cbdata_t;
2126 
2127 static void
2128 print_iostat_separator(iostat_cbdata_t *cb)
2129 {
2130 	int i = 0;
2131 
2132 	for (i = 0; i < cb->cb_namewidth; i++)
2133 		(void) printf("-");
2134 	(void) printf("  -----  -----  -----  -----  -----  -----\n");
2135 }
2136 
2137 static void
2138 print_iostat_header(iostat_cbdata_t *cb)
2139 {
2140 	(void) printf("%*s     capacity     operations    bandwidth\n",
2141 	    cb->cb_namewidth, "");
2142 	(void) printf("%-*s  alloc   free   read  write   read  write\n",
2143 	    cb->cb_namewidth, "pool");
2144 	print_iostat_separator(cb);
2145 }
2146 
2147 /*
2148  * Display a single statistic.
2149  */
2150 static void
2151 print_one_stat(uint64_t value)
2152 {
2153 	char buf[64];
2154 
2155 	zfs_nicenum(value, buf, sizeof (buf));
2156 	(void) printf("  %5s", buf);
2157 }
2158 
2159 /*
2160  * Print out all the statistics for the given vdev.  This can either be the
2161  * toplevel configuration, or called recursively.  If 'name' is NULL, then this
2162  * is a verbose output, and we don't want to display the toplevel pool stats.
2163  */
2164 void
2165 print_vdev_stats(zpool_handle_t *zhp, const char *name, nvlist_t *oldnv,
2166     nvlist_t *newnv, iostat_cbdata_t *cb, int depth)
2167 {
2168 	nvlist_t **oldchild, **newchild;
2169 	uint_t c, children;
2170 	vdev_stat_t *oldvs, *newvs;
2171 	vdev_stat_t zerovs = { 0 };
2172 	uint64_t tdelta;
2173 	double scale;
2174 	char *vname;
2175 
2176 	if (oldnv != NULL) {
2177 		verify(nvlist_lookup_uint64_array(oldnv,
2178 		    ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&oldvs, &c) == 0);
2179 	} else {
2180 		oldvs = &zerovs;
2181 	}
2182 
2183 	verify(nvlist_lookup_uint64_array(newnv, ZPOOL_CONFIG_VDEV_STATS,
2184 	    (uint64_t **)&newvs, &c) == 0);
2185 
2186 	if (strlen(name) + depth > cb->cb_namewidth)
2187 		(void) printf("%*s%s", depth, "", name);
2188 	else
2189 		(void) printf("%*s%s%*s", depth, "", name,
2190 		    (int)(cb->cb_namewidth - strlen(name) - depth), "");
2191 
2192 	tdelta = newvs->vs_timestamp - oldvs->vs_timestamp;
2193 
2194 	if (tdelta == 0)
2195 		scale = 1.0;
2196 	else
2197 		scale = (double)NANOSEC / tdelta;
2198 
2199 	/* only toplevel vdevs have capacity stats */
2200 	if (newvs->vs_space == 0) {
2201 		(void) printf("      -      -");
2202 	} else {
2203 		print_one_stat(newvs->vs_alloc);
2204 		print_one_stat(newvs->vs_space - newvs->vs_alloc);
2205 	}
2206 
2207 	print_one_stat((uint64_t)(scale * (newvs->vs_ops[ZIO_TYPE_READ] -
2208 	    oldvs->vs_ops[ZIO_TYPE_READ])));
2209 
2210 	print_one_stat((uint64_t)(scale * (newvs->vs_ops[ZIO_TYPE_WRITE] -
2211 	    oldvs->vs_ops[ZIO_TYPE_WRITE])));
2212 
2213 	print_one_stat((uint64_t)(scale * (newvs->vs_bytes[ZIO_TYPE_READ] -
2214 	    oldvs->vs_bytes[ZIO_TYPE_READ])));
2215 
2216 	print_one_stat((uint64_t)(scale * (newvs->vs_bytes[ZIO_TYPE_WRITE] -
2217 	    oldvs->vs_bytes[ZIO_TYPE_WRITE])));
2218 
2219 	(void) printf("\n");
2220 
2221 	if (!cb->cb_verbose)
2222 		return;
2223 
2224 	if (nvlist_lookup_nvlist_array(newnv, ZPOOL_CONFIG_CHILDREN,
2225 	    &newchild, &children) != 0)
2226 		return;
2227 
2228 	if (oldnv && nvlist_lookup_nvlist_array(oldnv, ZPOOL_CONFIG_CHILDREN,
2229 	    &oldchild, &c) != 0)
2230 		return;
2231 
2232 	for (c = 0; c < children; c++) {
2233 		uint64_t ishole = B_FALSE, islog = B_FALSE;
2234 
2235 		(void) nvlist_lookup_uint64(newchild[c], ZPOOL_CONFIG_IS_HOLE,
2236 		    &ishole);
2237 
2238 		(void) nvlist_lookup_uint64(newchild[c], ZPOOL_CONFIG_IS_LOG,
2239 		    &islog);
2240 
2241 		if (ishole || islog)
2242 			continue;
2243 
2244 		vname = zpool_vdev_name(g_zfs, zhp, newchild[c], B_FALSE);
2245 		print_vdev_stats(zhp, vname, oldnv ? oldchild[c] : NULL,
2246 		    newchild[c], cb, depth + 2);
2247 		free(vname);
2248 	}
2249 
2250 	/*
2251 	 * Log device section
2252 	 */
2253 
2254 	if (num_logs(newnv) > 0) {
2255 		(void) printf("%-*s      -      -      -      -      -      "
2256 		    "-\n", cb->cb_namewidth, "logs");
2257 
2258 		for (c = 0; c < children; c++) {
2259 			uint64_t islog = B_FALSE;
2260 			(void) nvlist_lookup_uint64(newchild[c],
2261 			    ZPOOL_CONFIG_IS_LOG, &islog);
2262 
2263 			if (islog) {
2264 				vname = zpool_vdev_name(g_zfs, zhp, newchild[c],
2265 				    B_FALSE);
2266 				print_vdev_stats(zhp, vname, oldnv ?
2267 				    oldchild[c] : NULL, newchild[c],
2268 				    cb, depth + 2);
2269 				free(vname);
2270 			}
2271 		}
2272 
2273 	}
2274 
2275 	/*
2276 	 * Include level 2 ARC devices in iostat output
2277 	 */
2278 	if (nvlist_lookup_nvlist_array(newnv, ZPOOL_CONFIG_L2CACHE,
2279 	    &newchild, &children) != 0)
2280 		return;
2281 
2282 	if (oldnv && nvlist_lookup_nvlist_array(oldnv, ZPOOL_CONFIG_L2CACHE,
2283 	    &oldchild, &c) != 0)
2284 		return;
2285 
2286 	if (children > 0) {
2287 		(void) printf("%-*s      -      -      -      -      -      "
2288 		    "-\n", cb->cb_namewidth, "cache");
2289 		for (c = 0; c < children; c++) {
2290 			vname = zpool_vdev_name(g_zfs, zhp, newchild[c],
2291 			    B_FALSE);
2292 			print_vdev_stats(zhp, vname, oldnv ? oldchild[c] : NULL,
2293 			    newchild[c], cb, depth + 2);
2294 			free(vname);
2295 		}
2296 	}
2297 }
2298 
2299 static int
2300 refresh_iostat(zpool_handle_t *zhp, void *data)
2301 {
2302 	iostat_cbdata_t *cb = data;
2303 	boolean_t missing;
2304 
2305 	/*
2306 	 * If the pool has disappeared, remove it from the list and continue.
2307 	 */
2308 	if (zpool_refresh_stats(zhp, &missing) != 0)
2309 		return (-1);
2310 
2311 	if (missing)
2312 		pool_list_remove(cb->cb_list, zhp);
2313 
2314 	return (0);
2315 }
2316 
2317 /*
2318  * Callback to print out the iostats for the given pool.
2319  */
2320 int
2321 print_iostat(zpool_handle_t *zhp, void *data)
2322 {
2323 	iostat_cbdata_t *cb = data;
2324 	nvlist_t *oldconfig, *newconfig;
2325 	nvlist_t *oldnvroot, *newnvroot;
2326 
2327 	newconfig = zpool_get_config(zhp, &oldconfig);
2328 
2329 	if (cb->cb_iteration == 1)
2330 		oldconfig = NULL;
2331 
2332 	verify(nvlist_lookup_nvlist(newconfig, ZPOOL_CONFIG_VDEV_TREE,
2333 	    &newnvroot) == 0);
2334 
2335 	if (oldconfig == NULL)
2336 		oldnvroot = NULL;
2337 	else
2338 		verify(nvlist_lookup_nvlist(oldconfig, ZPOOL_CONFIG_VDEV_TREE,
2339 		    &oldnvroot) == 0);
2340 
2341 	/*
2342 	 * Print out the statistics for the pool.
2343 	 */
2344 	print_vdev_stats(zhp, zpool_get_name(zhp), oldnvroot, newnvroot, cb, 0);
2345 
2346 	if (cb->cb_verbose)
2347 		print_iostat_separator(cb);
2348 
2349 	return (0);
2350 }
2351 
2352 int
2353 get_namewidth(zpool_handle_t *zhp, void *data)
2354 {
2355 	iostat_cbdata_t *cb = data;
2356 	nvlist_t *config, *nvroot;
2357 
2358 	if ((config = zpool_get_config(zhp, NULL)) != NULL) {
2359 		verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2360 		    &nvroot) == 0);
2361 		if (!cb->cb_verbose)
2362 			cb->cb_namewidth = strlen(zpool_get_name(zhp));
2363 		else
2364 			cb->cb_namewidth = max_width(zhp, nvroot, 0,
2365 			    cb->cb_namewidth);
2366 	}
2367 
2368 	/*
2369 	 * The width must fall into the range [10,38].  The upper limit is the
2370 	 * maximum we can have and still fit in 80 columns.
2371 	 */
2372 	if (cb->cb_namewidth < 10)
2373 		cb->cb_namewidth = 10;
2374 	if (cb->cb_namewidth > 38)
2375 		cb->cb_namewidth = 38;
2376 
2377 	return (0);
2378 }
2379 
2380 /*
2381  * Parse the input string, get the 'interval' and 'count' value if there is one.
2382  */
2383 static void
2384 get_interval_count(int *argcp, char **argv, unsigned long *iv,
2385     unsigned long *cnt)
2386 {
2387 	unsigned long interval = 0, count = 0;
2388 	int argc = *argcp, errno;
2389 
2390 	/*
2391 	 * Determine if the last argument is an integer or a pool name
2392 	 */
2393 	if (argc > 0 && isdigit(argv[argc - 1][0])) {
2394 		char *end;
2395 
2396 		errno = 0;
2397 		interval = strtoul(argv[argc - 1], &end, 10);
2398 
2399 		if (*end == '\0' && errno == 0) {
2400 			if (interval == 0) {
2401 				(void) fprintf(stderr, gettext("interval "
2402 				    "cannot be zero\n"));
2403 				usage(B_FALSE);
2404 			}
2405 			/*
2406 			 * Ignore the last parameter
2407 			 */
2408 			argc--;
2409 		} else {
2410 			/*
2411 			 * If this is not a valid number, just plow on.  The
2412 			 * user will get a more informative error message later
2413 			 * on.
2414 			 */
2415 			interval = 0;
2416 		}
2417 	}
2418 
2419 	/*
2420 	 * If the last argument is also an integer, then we have both a count
2421 	 * and an interval.
2422 	 */
2423 	if (argc > 0 && isdigit(argv[argc - 1][0])) {
2424 		char *end;
2425 
2426 		errno = 0;
2427 		count = interval;
2428 		interval = strtoul(argv[argc - 1], &end, 10);
2429 
2430 		if (*end == '\0' && errno == 0) {
2431 			if (interval == 0) {
2432 				(void) fprintf(stderr, gettext("interval "
2433 				    "cannot be zero\n"));
2434 				usage(B_FALSE);
2435 			}
2436 
2437 			/*
2438 			 * Ignore the last parameter
2439 			 */
2440 			argc--;
2441 		} else {
2442 			interval = 0;
2443 		}
2444 	}
2445 
2446 	*iv = interval;
2447 	*cnt = count;
2448 	*argcp = argc;
2449 }
2450 
2451 static void
2452 get_timestamp_arg(char c)
2453 {
2454 	if (c == 'u')
2455 		timestamp_fmt = UDATE;
2456 	else if (c == 'd')
2457 		timestamp_fmt = DDATE;
2458 	else
2459 		usage(B_FALSE);
2460 }
2461 
2462 /*
2463  * zpool iostat [-v] [-T d|u] [pool] ... [interval [count]]
2464  *
2465  *	-v	Display statistics for individual vdevs
2466  *	-T	Display a timestamp in date(1) or Unix format
2467  *
2468  * This command can be tricky because we want to be able to deal with pool
2469  * creation/destruction as well as vdev configuration changes.  The bulk of this
2470  * processing is handled by the pool_list_* routines in zpool_iter.c.  We rely
2471  * on pool_list_update() to detect the addition of new pools.  Configuration
2472  * changes are all handled within libzfs.
2473  */
2474 int
2475 zpool_do_iostat(int argc, char **argv)
2476 {
2477 	int c;
2478 	int ret;
2479 	int npools;
2480 	unsigned long interval = 0, count = 0;
2481 	zpool_list_t *list;
2482 	boolean_t verbose = B_FALSE;
2483 	iostat_cbdata_t cb;
2484 
2485 	/* check options */
2486 	while ((c = getopt(argc, argv, "T:v")) != -1) {
2487 		switch (c) {
2488 		case 'T':
2489 			get_timestamp_arg(*optarg);
2490 			break;
2491 		case 'v':
2492 			verbose = B_TRUE;
2493 			break;
2494 		case '?':
2495 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
2496 			    optopt);
2497 			usage(B_FALSE);
2498 		}
2499 	}
2500 
2501 	argc -= optind;
2502 	argv += optind;
2503 
2504 	get_interval_count(&argc, argv, &interval, &count);
2505 
2506 	/*
2507 	 * Construct the list of all interesting pools.
2508 	 */
2509 	ret = 0;
2510 	if ((list = pool_list_get(argc, argv, NULL, &ret)) == NULL)
2511 		return (1);
2512 
2513 	if (pool_list_count(list) == 0 && argc != 0) {
2514 		pool_list_free(list);
2515 		return (1);
2516 	}
2517 
2518 	if (pool_list_count(list) == 0 && interval == 0) {
2519 		pool_list_free(list);
2520 		(void) fprintf(stderr, gettext("no pools available\n"));
2521 		return (1);
2522 	}
2523 
2524 	/*
2525 	 * Enter the main iostat loop.
2526 	 */
2527 	cb.cb_list = list;
2528 	cb.cb_verbose = verbose;
2529 	cb.cb_iteration = 0;
2530 	cb.cb_namewidth = 0;
2531 
2532 	for (;;) {
2533 		pool_list_update(list);
2534 
2535 		if ((npools = pool_list_count(list)) == 0)
2536 			break;
2537 
2538 		/*
2539 		 * Refresh all statistics.  This is done as an explicit step
2540 		 * before calculating the maximum name width, so that any
2541 		 * configuration changes are properly accounted for.
2542 		 */
2543 		(void) pool_list_iter(list, B_FALSE, refresh_iostat, &cb);
2544 
2545 		/*
2546 		 * Iterate over all pools to determine the maximum width
2547 		 * for the pool / device name column across all pools.
2548 		 */
2549 		cb.cb_namewidth = 0;
2550 		(void) pool_list_iter(list, B_FALSE, get_namewidth, &cb);
2551 
2552 		if (timestamp_fmt != NODATE)
2553 			print_timestamp(timestamp_fmt);
2554 
2555 		/*
2556 		 * If it's the first time, or verbose mode, print the header.
2557 		 */
2558 		if (++cb.cb_iteration == 1 || verbose)
2559 			print_iostat_header(&cb);
2560 
2561 		(void) pool_list_iter(list, B_FALSE, print_iostat, &cb);
2562 
2563 		/*
2564 		 * If there's more than one pool, and we're not in verbose mode
2565 		 * (which prints a separator for us), then print a separator.
2566 		 */
2567 		if (npools > 1 && !verbose)
2568 			print_iostat_separator(&cb);
2569 
2570 		if (verbose)
2571 			(void) printf("\n");
2572 
2573 		/*
2574 		 * Flush the output so that redirection to a file isn't buffered
2575 		 * indefinitely.
2576 		 */
2577 		(void) fflush(stdout);
2578 
2579 		if (interval == 0)
2580 			break;
2581 
2582 		if (count != 0 && --count == 0)
2583 			break;
2584 
2585 		(void) sleep(interval);
2586 	}
2587 
2588 	pool_list_free(list);
2589 
2590 	return (ret);
2591 }
2592 
2593 typedef struct list_cbdata {
2594 	boolean_t	cb_verbose;
2595 	int		cb_namewidth;
2596 	boolean_t	cb_scripted;
2597 	zprop_list_t	*cb_proplist;
2598 } list_cbdata_t;
2599 
2600 /*
2601  * Given a list of columns to display, output appropriate headers for each one.
2602  */
2603 static void
2604 print_header(list_cbdata_t *cb)
2605 {
2606 	zprop_list_t *pl = cb->cb_proplist;
2607 	char headerbuf[ZPOOL_MAXPROPLEN];
2608 	const char *header;
2609 	boolean_t first = B_TRUE;
2610 	boolean_t right_justify;
2611 	size_t width = 0;
2612 
2613 	for (; pl != NULL; pl = pl->pl_next) {
2614 		width = pl->pl_width;
2615 		if (first && cb->cb_verbose) {
2616 			/*
2617 			 * Reset the width to accommodate the verbose listing
2618 			 * of devices.
2619 			 */
2620 			width = cb->cb_namewidth;
2621 		}
2622 
2623 		if (!first)
2624 			(void) printf("  ");
2625 		else
2626 			first = B_FALSE;
2627 
2628 		right_justify = B_FALSE;
2629 		if (pl->pl_prop != ZPROP_INVAL) {
2630 			header = zpool_prop_column_name(pl->pl_prop);
2631 			right_justify = zpool_prop_align_right(pl->pl_prop);
2632 		} else {
2633 			int i;
2634 
2635 			for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2636 				headerbuf[i] = toupper(pl->pl_user_prop[i]);
2637 			headerbuf[i] = '\0';
2638 			header = headerbuf;
2639 		}
2640 
2641 		if (pl->pl_next == NULL && !right_justify)
2642 			(void) printf("%s", header);
2643 		else if (right_justify)
2644 			(void) printf("%*s", width, header);
2645 		else
2646 			(void) printf("%-*s", width, header);
2647 
2648 	}
2649 
2650 	(void) printf("\n");
2651 }
2652 
2653 /*
2654  * Given a pool and a list of properties, print out all the properties according
2655  * to the described layout.
2656  */
2657 static void
2658 print_pool(zpool_handle_t *zhp, list_cbdata_t *cb)
2659 {
2660 	zprop_list_t *pl = cb->cb_proplist;
2661 	boolean_t first = B_TRUE;
2662 	char property[ZPOOL_MAXPROPLEN];
2663 	char *propstr;
2664 	boolean_t right_justify;
2665 	size_t width;
2666 
2667 	for (; pl != NULL; pl = pl->pl_next) {
2668 
2669 		width = pl->pl_width;
2670 		if (first && cb->cb_verbose) {
2671 			/*
2672 			 * Reset the width to accommodate the verbose listing
2673 			 * of devices.
2674 			 */
2675 			width = cb->cb_namewidth;
2676 		}
2677 
2678 		if (!first) {
2679 			if (cb->cb_scripted)
2680 				(void) printf("\t");
2681 			else
2682 				(void) printf("  ");
2683 		} else {
2684 			first = B_FALSE;
2685 		}
2686 
2687 		right_justify = B_FALSE;
2688 		if (pl->pl_prop != ZPROP_INVAL) {
2689 			if (pl->pl_prop == ZPOOL_PROP_EXPANDSZ &&
2690 			    zpool_get_prop_int(zhp, pl->pl_prop, NULL) == 0)
2691 				propstr = "-";
2692 			else if (zpool_get_prop(zhp, pl->pl_prop, property,
2693 			    sizeof (property), NULL) != 0)
2694 				propstr = "-";
2695 			else
2696 				propstr = property;
2697 
2698 			right_justify = zpool_prop_align_right(pl->pl_prop);
2699 		} else if ((zpool_prop_feature(pl->pl_user_prop) ||
2700 		    zpool_prop_unsupported(pl->pl_user_prop)) &&
2701 		    zpool_prop_get_feature(zhp, pl->pl_user_prop, property,
2702 		    sizeof (property)) == 0) {
2703 			propstr = property;
2704 		} else {
2705 			propstr = "-";
2706 		}
2707 
2708 
2709 		/*
2710 		 * If this is being called in scripted mode, or if this is the
2711 		 * last column and it is left-justified, don't include a width
2712 		 * format specifier.
2713 		 */
2714 		if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
2715 			(void) printf("%s", propstr);
2716 		else if (right_justify)
2717 			(void) printf("%*s", width, propstr);
2718 		else
2719 			(void) printf("%-*s", width, propstr);
2720 	}
2721 
2722 	(void) printf("\n");
2723 }
2724 
2725 static void
2726 print_one_column(zpool_prop_t prop, uint64_t value, boolean_t scripted)
2727 {
2728 	char propval[64];
2729 	boolean_t fixed;
2730 	size_t width = zprop_width(prop, &fixed, ZFS_TYPE_POOL);
2731 
2732 	zfs_nicenum(value, propval, sizeof (propval));
2733 
2734 	if (prop == ZPOOL_PROP_EXPANDSZ && value == 0)
2735 		(void) strlcpy(propval, "-", sizeof (propval));
2736 
2737 	if (scripted)
2738 		(void) printf("\t%s", propval);
2739 	else
2740 		(void) printf("  %*s", width, propval);
2741 }
2742 
2743 void
2744 print_list_stats(zpool_handle_t *zhp, const char *name, nvlist_t *nv,
2745     list_cbdata_t *cb, int depth)
2746 {
2747 	nvlist_t **child;
2748 	vdev_stat_t *vs;
2749 	uint_t c, children;
2750 	char *vname;
2751 	boolean_t scripted = cb->cb_scripted;
2752 
2753 	verify(nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
2754 	    (uint64_t **)&vs, &c) == 0);
2755 
2756 	if (name != NULL) {
2757 		if (scripted)
2758 			(void) printf("\t%s", name);
2759 		else if (strlen(name) + depth > cb->cb_namewidth)
2760 			(void) printf("%*s%s", depth, "", name);
2761 		else
2762 			(void) printf("%*s%s%*s", depth, "", name,
2763 			    (int)(cb->cb_namewidth - strlen(name) - depth), "");
2764 
2765 		/* only toplevel vdevs have capacity stats */
2766 		if (vs->vs_space == 0) {
2767 			if (scripted)
2768 				(void) printf("\t-\t-\t-");
2769 			else
2770 				(void) printf("      -      -      -");
2771 		} else {
2772 			print_one_column(ZPOOL_PROP_SIZE, vs->vs_space,
2773 			    scripted);
2774 			print_one_column(ZPOOL_PROP_CAPACITY, vs->vs_alloc,
2775 			    scripted);
2776 			print_one_column(ZPOOL_PROP_FREE,
2777 			    vs->vs_space - vs->vs_alloc, scripted);
2778 		}
2779 		print_one_column(ZPOOL_PROP_EXPANDSZ, vs->vs_esize,
2780 		    scripted);
2781 		(void) printf("\n");
2782 	}
2783 
2784 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
2785 	    &child, &children) != 0)
2786 		return;
2787 
2788 	for (c = 0; c < children; c++) {
2789 		uint64_t ishole = B_FALSE;
2790 
2791 		if (nvlist_lookup_uint64(child[c],
2792 		    ZPOOL_CONFIG_IS_HOLE, &ishole) == 0 && ishole)
2793 			continue;
2794 
2795 		vname = zpool_vdev_name(g_zfs, zhp, child[c], B_FALSE);
2796 		print_list_stats(zhp, vname, child[c], cb, depth + 2);
2797 		free(vname);
2798 	}
2799 
2800 	/*
2801 	 * Include level 2 ARC devices in iostat output
2802 	 */
2803 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
2804 	    &child, &children) != 0)
2805 		return;
2806 
2807 	if (children > 0) {
2808 		(void) printf("%-*s      -      -      -      -      -      "
2809 		    "-\n", cb->cb_namewidth, "cache");
2810 		for (c = 0; c < children; c++) {
2811 			vname = zpool_vdev_name(g_zfs, zhp, child[c],
2812 			    B_FALSE);
2813 			print_list_stats(zhp, vname, child[c], cb, depth + 2);
2814 			free(vname);
2815 		}
2816 	}
2817 }
2818 
2819 
2820 /*
2821  * Generic callback function to list a pool.
2822  */
2823 int
2824 list_callback(zpool_handle_t *zhp, void *data)
2825 {
2826 	list_cbdata_t *cbp = data;
2827 	nvlist_t *config;
2828 	nvlist_t *nvroot;
2829 
2830 	config = zpool_get_config(zhp, NULL);
2831 
2832 	print_pool(zhp, cbp);
2833 	if (!cbp->cb_verbose)
2834 		return (0);
2835 
2836 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2837 	    &nvroot) == 0);
2838 	print_list_stats(zhp, NULL, nvroot, cbp, 0);
2839 
2840 	return (0);
2841 }
2842 
2843 /*
2844  * zpool list [-H] [-o prop[,prop]*] [-T d|u] [pool] ... [interval [count]]
2845  *
2846  *	-H	Scripted mode.  Don't display headers, and separate properties
2847  *		by a single tab.
2848  *	-o	List of properties to display.  Defaults to
2849  *		"name,size,allocated,free,capacity,health,altroot"
2850  *	-T	Display a timestamp in date(1) or Unix format
2851  *
2852  * List all pools in the system, whether or not they're healthy.  Output space
2853  * statistics for each one, as well as health status summary.
2854  */
2855 int
2856 zpool_do_list(int argc, char **argv)
2857 {
2858 	int c;
2859 	int ret;
2860 	list_cbdata_t cb = { 0 };
2861 	static char default_props[] =
2862 	    "name,size,allocated,free,expandsize,capacity,dedupratio,"
2863 	    "health,altroot";
2864 	char *props = default_props;
2865 	unsigned long interval = 0, count = 0;
2866 	zpool_list_t *list;
2867 	boolean_t first = B_TRUE;
2868 
2869 	/* check options */
2870 	while ((c = getopt(argc, argv, ":Ho:T:v")) != -1) {
2871 		switch (c) {
2872 		case 'H':
2873 			cb.cb_scripted = B_TRUE;
2874 			break;
2875 		case 'o':
2876 			props = optarg;
2877 			break;
2878 		case 'T':
2879 			get_timestamp_arg(*optarg);
2880 			break;
2881 		case 'v':
2882 			cb.cb_verbose = B_TRUE;
2883 			break;
2884 		case ':':
2885 			(void) fprintf(stderr, gettext("missing argument for "
2886 			    "'%c' option\n"), optopt);
2887 			usage(B_FALSE);
2888 			break;
2889 		case '?':
2890 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
2891 			    optopt);
2892 			usage(B_FALSE);
2893 		}
2894 	}
2895 
2896 	argc -= optind;
2897 	argv += optind;
2898 
2899 	get_interval_count(&argc, argv, &interval, &count);
2900 
2901 	if (zprop_get_list(g_zfs, props, &cb.cb_proplist, ZFS_TYPE_POOL) != 0)
2902 		usage(B_FALSE);
2903 
2904 	if ((list = pool_list_get(argc, argv, &cb.cb_proplist, &ret)) == NULL)
2905 		return (1);
2906 
2907 	if (argc == 0 && !cb.cb_scripted && pool_list_count(list) == 0) {
2908 		(void) printf(gettext("no pools available\n"));
2909 		zprop_free_list(cb.cb_proplist);
2910 		return (0);
2911 	}
2912 
2913 	for (;;) {
2914 		pool_list_update(list);
2915 
2916 		if (pool_list_count(list) == 0)
2917 			break;
2918 
2919 		cb.cb_namewidth = 0;
2920 		(void) pool_list_iter(list, B_FALSE, get_namewidth, &cb);
2921 
2922 		if (timestamp_fmt != NODATE)
2923 			print_timestamp(timestamp_fmt);
2924 
2925 		if (!cb.cb_scripted && (first || cb.cb_verbose)) {
2926 			print_header(&cb);
2927 			first = B_FALSE;
2928 		}
2929 		ret = pool_list_iter(list, B_TRUE, list_callback, &cb);
2930 
2931 		if (interval == 0)
2932 			break;
2933 
2934 		if (count != 0 && --count == 0)
2935 			break;
2936 
2937 		(void) sleep(interval);
2938 	}
2939 
2940 	zprop_free_list(cb.cb_proplist);
2941 	return (ret);
2942 }
2943 
2944 static nvlist_t *
2945 zpool_get_vdev_by_name(nvlist_t *nv, char *name)
2946 {
2947 	nvlist_t **child;
2948 	uint_t c, children;
2949 	nvlist_t *match;
2950 	char *path;
2951 
2952 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
2953 	    &child, &children) != 0) {
2954 		verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0);
2955 		if (strncmp(name, "/dev/dsk/", 9) == 0)
2956 			name += 9;
2957 		if (strncmp(path, "/dev/dsk/", 9) == 0)
2958 			path += 9;
2959 		if (strcmp(name, path) == 0)
2960 			return (nv);
2961 		return (NULL);
2962 	}
2963 
2964 	for (c = 0; c < children; c++)
2965 		if ((match = zpool_get_vdev_by_name(child[c], name)) != NULL)
2966 			return (match);
2967 
2968 	return (NULL);
2969 }
2970 
2971 static int
2972 zpool_do_attach_or_replace(int argc, char **argv, int replacing)
2973 {
2974 	boolean_t force = B_FALSE;
2975 	int c;
2976 	nvlist_t *nvroot;
2977 	char *poolname, *old_disk, *new_disk;
2978 	zpool_handle_t *zhp;
2979 	int ret;
2980 
2981 	/* check options */
2982 	while ((c = getopt(argc, argv, "f")) != -1) {
2983 		switch (c) {
2984 		case 'f':
2985 			force = B_TRUE;
2986 			break;
2987 		case '?':
2988 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
2989 			    optopt);
2990 			usage(B_FALSE);
2991 		}
2992 	}
2993 
2994 	argc -= optind;
2995 	argv += optind;
2996 
2997 	/* get pool name and check number of arguments */
2998 	if (argc < 1) {
2999 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
3000 		usage(B_FALSE);
3001 	}
3002 
3003 	poolname = argv[0];
3004 
3005 	if (argc < 2) {
3006 		(void) fprintf(stderr,
3007 		    gettext("missing <device> specification\n"));
3008 		usage(B_FALSE);
3009 	}
3010 
3011 	old_disk = argv[1];
3012 
3013 	if (argc < 3) {
3014 		if (!replacing) {
3015 			(void) fprintf(stderr,
3016 			    gettext("missing <new_device> specification\n"));
3017 			usage(B_FALSE);
3018 		}
3019 		new_disk = old_disk;
3020 		argc -= 1;
3021 		argv += 1;
3022 	} else {
3023 		new_disk = argv[2];
3024 		argc -= 2;
3025 		argv += 2;
3026 	}
3027 
3028 	if (argc > 1) {
3029 		(void) fprintf(stderr, gettext("too many arguments\n"));
3030 		usage(B_FALSE);
3031 	}
3032 
3033 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3034 		return (1);
3035 
3036 	if (zpool_get_config(zhp, NULL) == NULL) {
3037 		(void) fprintf(stderr, gettext("pool '%s' is unavailable\n"),
3038 		    poolname);
3039 		zpool_close(zhp);
3040 		return (1);
3041 	}
3042 
3043 	nvroot = make_root_vdev(zhp, force, B_FALSE, replacing, B_FALSE,
3044 	    argc, argv);
3045 	if (nvroot == NULL) {
3046 		zpool_close(zhp);
3047 		return (1);
3048 	}
3049 
3050 	ret = zpool_vdev_attach(zhp, old_disk, new_disk, nvroot, replacing);
3051 
3052 	nvlist_free(nvroot);
3053 	zpool_close(zhp);
3054 
3055 	return (ret);
3056 }
3057 
3058 /*
3059  * zpool replace [-f] <pool> <device> <new_device>
3060  *
3061  *	-f	Force attach, even if <new_device> appears to be in use.
3062  *
3063  * Replace <device> with <new_device>.
3064  */
3065 /* ARGSUSED */
3066 int
3067 zpool_do_replace(int argc, char **argv)
3068 {
3069 	return (zpool_do_attach_or_replace(argc, argv, B_TRUE));
3070 }
3071 
3072 /*
3073  * zpool attach [-f] <pool> <device> <new_device>
3074  *
3075  *	-f	Force attach, even if <new_device> appears to be in use.
3076  *
3077  * Attach <new_device> to the mirror containing <device>.  If <device> is not
3078  * part of a mirror, then <device> will be transformed into a mirror of
3079  * <device> and <new_device>.  In either case, <new_device> will begin life
3080  * with a DTL of [0, now], and will immediately begin to resilver itself.
3081  */
3082 int
3083 zpool_do_attach(int argc, char **argv)
3084 {
3085 	return (zpool_do_attach_or_replace(argc, argv, B_FALSE));
3086 }
3087 
3088 /*
3089  * zpool detach [-f] <pool> <device>
3090  *
3091  *	-f	Force detach of <device>, even if DTLs argue against it
3092  *		(not supported yet)
3093  *
3094  * Detach a device from a mirror.  The operation will be refused if <device>
3095  * is the last device in the mirror, or if the DTLs indicate that this device
3096  * has the only valid copy of some data.
3097  */
3098 /* ARGSUSED */
3099 int
3100 zpool_do_detach(int argc, char **argv)
3101 {
3102 	int c;
3103 	char *poolname, *path;
3104 	zpool_handle_t *zhp;
3105 	int ret;
3106 
3107 	/* check options */
3108 	while ((c = getopt(argc, argv, "f")) != -1) {
3109 		switch (c) {
3110 		case 'f':
3111 		case '?':
3112 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3113 			    optopt);
3114 			usage(B_FALSE);
3115 		}
3116 	}
3117 
3118 	argc -= optind;
3119 	argv += optind;
3120 
3121 	/* get pool name and check number of arguments */
3122 	if (argc < 1) {
3123 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
3124 		usage(B_FALSE);
3125 	}
3126 
3127 	if (argc < 2) {
3128 		(void) fprintf(stderr,
3129 		    gettext("missing <device> specification\n"));
3130 		usage(B_FALSE);
3131 	}
3132 
3133 	poolname = argv[0];
3134 	path = argv[1];
3135 
3136 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3137 		return (1);
3138 
3139 	ret = zpool_vdev_detach(zhp, path);
3140 
3141 	zpool_close(zhp);
3142 
3143 	return (ret);
3144 }
3145 
3146 /*
3147  * zpool split [-n] [-o prop=val] ...
3148  *		[-o mntopt] ...
3149  *		[-R altroot] <pool> <newpool> [<device> ...]
3150  *
3151  *	-n	Do not split the pool, but display the resulting layout if
3152  *		it were to be split.
3153  *	-o	Set property=value, or set mount options.
3154  *	-R	Mount the split-off pool under an alternate root.
3155  *
3156  * Splits the named pool and gives it the new pool name.  Devices to be split
3157  * off may be listed, provided that no more than one device is specified
3158  * per top-level vdev mirror.  The newly split pool is left in an exported
3159  * state unless -R is specified.
3160  *
3161  * Restrictions: the top-level of the pool pool must only be made up of
3162  * mirrors; all devices in the pool must be healthy; no device may be
3163  * undergoing a resilvering operation.
3164  */
3165 int
3166 zpool_do_split(int argc, char **argv)
3167 {
3168 	char *srcpool, *newpool, *propval;
3169 	char *mntopts = NULL;
3170 	splitflags_t flags;
3171 	int c, ret = 0;
3172 	zpool_handle_t *zhp;
3173 	nvlist_t *config, *props = NULL;
3174 
3175 	flags.dryrun = B_FALSE;
3176 	flags.import = B_FALSE;
3177 
3178 	/* check options */
3179 	while ((c = getopt(argc, argv, ":R:no:")) != -1) {
3180 		switch (c) {
3181 		case 'R':
3182 			flags.import = B_TRUE;
3183 			if (add_prop_list(
3184 			    zpool_prop_to_name(ZPOOL_PROP_ALTROOT), optarg,
3185 			    &props, B_TRUE) != 0) {
3186 				if (props)
3187 					nvlist_free(props);
3188 				usage(B_FALSE);
3189 			}
3190 			break;
3191 		case 'n':
3192 			flags.dryrun = B_TRUE;
3193 			break;
3194 		case 'o':
3195 			if ((propval = strchr(optarg, '=')) != NULL) {
3196 				*propval = '\0';
3197 				propval++;
3198 				if (add_prop_list(optarg, propval,
3199 				    &props, B_TRUE) != 0) {
3200 					if (props)
3201 						nvlist_free(props);
3202 					usage(B_FALSE);
3203 				}
3204 			} else {
3205 				mntopts = optarg;
3206 			}
3207 			break;
3208 		case ':':
3209 			(void) fprintf(stderr, gettext("missing argument for "
3210 			    "'%c' option\n"), optopt);
3211 			usage(B_FALSE);
3212 			break;
3213 		case '?':
3214 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3215 			    optopt);
3216 			usage(B_FALSE);
3217 			break;
3218 		}
3219 	}
3220 
3221 	if (!flags.import && mntopts != NULL) {
3222 		(void) fprintf(stderr, gettext("setting mntopts is only "
3223 		    "valid when importing the pool\n"));
3224 		usage(B_FALSE);
3225 	}
3226 
3227 	argc -= optind;
3228 	argv += optind;
3229 
3230 	if (argc < 1) {
3231 		(void) fprintf(stderr, gettext("Missing pool name\n"));
3232 		usage(B_FALSE);
3233 	}
3234 	if (argc < 2) {
3235 		(void) fprintf(stderr, gettext("Missing new pool name\n"));
3236 		usage(B_FALSE);
3237 	}
3238 
3239 	srcpool = argv[0];
3240 	newpool = argv[1];
3241 
3242 	argc -= 2;
3243 	argv += 2;
3244 
3245 	if ((zhp = zpool_open(g_zfs, srcpool)) == NULL)
3246 		return (1);
3247 
3248 	config = split_mirror_vdev(zhp, newpool, props, flags, argc, argv);
3249 	if (config == NULL) {
3250 		ret = 1;
3251 	} else {
3252 		if (flags.dryrun) {
3253 			(void) printf(gettext("would create '%s' with the "
3254 			    "following layout:\n\n"), newpool);
3255 			print_vdev_tree(NULL, newpool, config, 0, B_FALSE);
3256 		}
3257 		nvlist_free(config);
3258 	}
3259 
3260 	zpool_close(zhp);
3261 
3262 	if (ret != 0 || flags.dryrun || !flags.import)
3263 		return (ret);
3264 
3265 	/*
3266 	 * The split was successful. Now we need to open the new
3267 	 * pool and import it.
3268 	 */
3269 	if ((zhp = zpool_open_canfail(g_zfs, newpool)) == NULL)
3270 		return (1);
3271 	if (zpool_get_state(zhp) != POOL_STATE_UNAVAIL &&
3272 	    zpool_enable_datasets(zhp, mntopts, 0) != 0) {
3273 		ret = 1;
3274 		(void) fprintf(stderr, gettext("Split was successful, but "
3275 		    "the datasets could not all be mounted\n"));
3276 		(void) fprintf(stderr, gettext("Try doing '%s' with a "
3277 		    "different altroot\n"), "zpool import");
3278 	}
3279 	zpool_close(zhp);
3280 
3281 	return (ret);
3282 }
3283 
3284 
3285 
3286 /*
3287  * zpool online <pool> <device> ...
3288  */
3289 int
3290 zpool_do_online(int argc, char **argv)
3291 {
3292 	int c, i;
3293 	char *poolname;
3294 	zpool_handle_t *zhp;
3295 	int ret = 0;
3296 	vdev_state_t newstate;
3297 	int flags = 0;
3298 
3299 	/* check options */
3300 	while ((c = getopt(argc, argv, "et")) != -1) {
3301 		switch (c) {
3302 		case 'e':
3303 			flags |= ZFS_ONLINE_EXPAND;
3304 			break;
3305 		case 't':
3306 		case '?':
3307 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3308 			    optopt);
3309 			usage(B_FALSE);
3310 		}
3311 	}
3312 
3313 	argc -= optind;
3314 	argv += optind;
3315 
3316 	/* get pool name and check number of arguments */
3317 	if (argc < 1) {
3318 		(void) fprintf(stderr, gettext("missing pool name\n"));
3319 		usage(B_FALSE);
3320 	}
3321 	if (argc < 2) {
3322 		(void) fprintf(stderr, gettext("missing device name\n"));
3323 		usage(B_FALSE);
3324 	}
3325 
3326 	poolname = argv[0];
3327 
3328 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3329 		return (1);
3330 
3331 	for (i = 1; i < argc; i++) {
3332 		if (zpool_vdev_online(zhp, argv[i], flags, &newstate) == 0) {
3333 			if (newstate != VDEV_STATE_HEALTHY) {
3334 				(void) printf(gettext("warning: device '%s' "
3335 				    "onlined, but remains in faulted state\n"),
3336 				    argv[i]);
3337 				if (newstate == VDEV_STATE_FAULTED)
3338 					(void) printf(gettext("use 'zpool "
3339 					    "clear' to restore a faulted "
3340 					    "device\n"));
3341 				else
3342 					(void) printf(gettext("use 'zpool "
3343 					    "replace' to replace devices "
3344 					    "that are no longer present\n"));
3345 			}
3346 		} else {
3347 			ret = 1;
3348 		}
3349 	}
3350 
3351 	zpool_close(zhp);
3352 
3353 	return (ret);
3354 }
3355 
3356 /*
3357  * zpool offline [-ft] <pool> <device> ...
3358  *
3359  *	-f	Force the device into the offline state, even if doing
3360  *		so would appear to compromise pool availability.
3361  *		(not supported yet)
3362  *
3363  *	-t	Only take the device off-line temporarily.  The offline
3364  *		state will not be persistent across reboots.
3365  */
3366 /* ARGSUSED */
3367 int
3368 zpool_do_offline(int argc, char **argv)
3369 {
3370 	int c, i;
3371 	char *poolname;
3372 	zpool_handle_t *zhp;
3373 	int ret = 0;
3374 	boolean_t istmp = B_FALSE;
3375 
3376 	/* check options */
3377 	while ((c = getopt(argc, argv, "ft")) != -1) {
3378 		switch (c) {
3379 		case 't':
3380 			istmp = B_TRUE;
3381 			break;
3382 		case 'f':
3383 		case '?':
3384 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3385 			    optopt);
3386 			usage(B_FALSE);
3387 		}
3388 	}
3389 
3390 	argc -= optind;
3391 	argv += optind;
3392 
3393 	/* get pool name and check number of arguments */
3394 	if (argc < 1) {
3395 		(void) fprintf(stderr, gettext("missing pool name\n"));
3396 		usage(B_FALSE);
3397 	}
3398 	if (argc < 2) {
3399 		(void) fprintf(stderr, gettext("missing device name\n"));
3400 		usage(B_FALSE);
3401 	}
3402 
3403 	poolname = argv[0];
3404 
3405 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3406 		return (1);
3407 
3408 	for (i = 1; i < argc; i++) {
3409 		if (zpool_vdev_offline(zhp, argv[i], istmp) != 0)
3410 			ret = 1;
3411 	}
3412 
3413 	zpool_close(zhp);
3414 
3415 	return (ret);
3416 }
3417 
3418 /*
3419  * zpool clear <pool> [device]
3420  *
3421  * Clear all errors associated with a pool or a particular device.
3422  */
3423 int
3424 zpool_do_clear(int argc, char **argv)
3425 {
3426 	int c;
3427 	int ret = 0;
3428 	boolean_t dryrun = B_FALSE;
3429 	boolean_t do_rewind = B_FALSE;
3430 	boolean_t xtreme_rewind = B_FALSE;
3431 	uint32_t rewind_policy = ZPOOL_NO_REWIND;
3432 	nvlist_t *policy = NULL;
3433 	zpool_handle_t *zhp;
3434 	char *pool, *device;
3435 
3436 	/* check options */
3437 	while ((c = getopt(argc, argv, "FnX")) != -1) {
3438 		switch (c) {
3439 		case 'F':
3440 			do_rewind = B_TRUE;
3441 			break;
3442 		case 'n':
3443 			dryrun = B_TRUE;
3444 			break;
3445 		case 'X':
3446 			xtreme_rewind = B_TRUE;
3447 			break;
3448 		case '?':
3449 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3450 			    optopt);
3451 			usage(B_FALSE);
3452 		}
3453 	}
3454 
3455 	argc -= optind;
3456 	argv += optind;
3457 
3458 	if (argc < 1) {
3459 		(void) fprintf(stderr, gettext("missing pool name\n"));
3460 		usage(B_FALSE);
3461 	}
3462 
3463 	if (argc > 2) {
3464 		(void) fprintf(stderr, gettext("too many arguments\n"));
3465 		usage(B_FALSE);
3466 	}
3467 
3468 	if ((dryrun || xtreme_rewind) && !do_rewind) {
3469 		(void) fprintf(stderr,
3470 		    gettext("-n or -X only meaningful with -F\n"));
3471 		usage(B_FALSE);
3472 	}
3473 	if (dryrun)
3474 		rewind_policy = ZPOOL_TRY_REWIND;
3475 	else if (do_rewind)
3476 		rewind_policy = ZPOOL_DO_REWIND;
3477 	if (xtreme_rewind)
3478 		rewind_policy |= ZPOOL_EXTREME_REWIND;
3479 
3480 	/* In future, further rewind policy choices can be passed along here */
3481 	if (nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) != 0 ||
3482 	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind_policy) != 0)
3483 		return (1);
3484 
3485 	pool = argv[0];
3486 	device = argc == 2 ? argv[1] : NULL;
3487 
3488 	if ((zhp = zpool_open_canfail(g_zfs, pool)) == NULL) {
3489 		nvlist_free(policy);
3490 		return (1);
3491 	}
3492 
3493 	if (zpool_clear(zhp, device, policy) != 0)
3494 		ret = 1;
3495 
3496 	zpool_close(zhp);
3497 
3498 	nvlist_free(policy);
3499 
3500 	return (ret);
3501 }
3502 
3503 /*
3504  * zpool reguid <pool>
3505  */
3506 int
3507 zpool_do_reguid(int argc, char **argv)
3508 {
3509 	int c;
3510 	char *poolname;
3511 	zpool_handle_t *zhp;
3512 	int ret = 0;
3513 
3514 	/* check options */
3515 	while ((c = getopt(argc, argv, "")) != -1) {
3516 		switch (c) {
3517 		case '?':
3518 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3519 			    optopt);
3520 			usage(B_FALSE);
3521 		}
3522 	}
3523 
3524 	argc -= optind;
3525 	argv += optind;
3526 
3527 	/* get pool name and check number of arguments */
3528 	if (argc < 1) {
3529 		(void) fprintf(stderr, gettext("missing pool name\n"));
3530 		usage(B_FALSE);
3531 	}
3532 
3533 	if (argc > 1) {
3534 		(void) fprintf(stderr, gettext("too many arguments\n"));
3535 		usage(B_FALSE);
3536 	}
3537 
3538 	poolname = argv[0];
3539 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3540 		return (1);
3541 
3542 	ret = zpool_reguid(zhp);
3543 
3544 	zpool_close(zhp);
3545 	return (ret);
3546 }
3547 
3548 
3549 /*
3550  * zpool reopen <pool>
3551  *
3552  * Reopen the pool so that the kernel can update the sizes of all vdevs.
3553  *
3554  * NOTE: This command is currently undocumented.  If the command is ever
3555  * exposed then the appropriate usage() messages will need to be made.
3556  */
3557 int
3558 zpool_do_reopen(int argc, char **argv)
3559 {
3560 	int ret = 0;
3561 	zpool_handle_t *zhp;
3562 	char *pool;
3563 
3564 	argc--;
3565 	argv++;
3566 
3567 	if (argc != 1)
3568 		return (2);
3569 
3570 	pool = argv[0];
3571 	if ((zhp = zpool_open_canfail(g_zfs, pool)) == NULL)
3572 		return (1);
3573 
3574 	ret = zpool_reopen(zhp);
3575 	zpool_close(zhp);
3576 	return (ret);
3577 }
3578 
3579 typedef struct scrub_cbdata {
3580 	int	cb_type;
3581 	int	cb_argc;
3582 	char	**cb_argv;
3583 } scrub_cbdata_t;
3584 
3585 int
3586 scrub_callback(zpool_handle_t *zhp, void *data)
3587 {
3588 	scrub_cbdata_t *cb = data;
3589 	int err;
3590 
3591 	/*
3592 	 * Ignore faulted pools.
3593 	 */
3594 	if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) {
3595 		(void) fprintf(stderr, gettext("cannot scrub '%s': pool is "
3596 		    "currently unavailable\n"), zpool_get_name(zhp));
3597 		return (1);
3598 	}
3599 
3600 	err = zpool_scan(zhp, cb->cb_type);
3601 
3602 	return (err != 0);
3603 }
3604 
3605 /*
3606  * zpool scrub [-s] <pool> ...
3607  *
3608  *	-s	Stop.  Stops any in-progress scrub.
3609  */
3610 int
3611 zpool_do_scrub(int argc, char **argv)
3612 {
3613 	int c;
3614 	scrub_cbdata_t cb;
3615 
3616 	cb.cb_type = POOL_SCAN_SCRUB;
3617 
3618 	/* check options */
3619 	while ((c = getopt(argc, argv, "s")) != -1) {
3620 		switch (c) {
3621 		case 's':
3622 			cb.cb_type = POOL_SCAN_NONE;
3623 			break;
3624 		case '?':
3625 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3626 			    optopt);
3627 			usage(B_FALSE);
3628 		}
3629 	}
3630 
3631 	cb.cb_argc = argc;
3632 	cb.cb_argv = argv;
3633 	argc -= optind;
3634 	argv += optind;
3635 
3636 	if (argc < 1) {
3637 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
3638 		usage(B_FALSE);
3639 	}
3640 
3641 	return (for_each_pool(argc, argv, B_TRUE, NULL, scrub_callback, &cb));
3642 }
3643 
3644 typedef struct status_cbdata {
3645 	int		cb_count;
3646 	boolean_t	cb_allpools;
3647 	boolean_t	cb_verbose;
3648 	boolean_t	cb_explain;
3649 	boolean_t	cb_first;
3650 	boolean_t	cb_dedup_stats;
3651 } status_cbdata_t;
3652 
3653 /*
3654  * Print out detailed scrub status.
3655  */
3656 void
3657 print_scan_status(pool_scan_stat_t *ps)
3658 {
3659 	time_t start, end;
3660 	uint64_t elapsed, mins_left, hours_left;
3661 	uint64_t pass_exam, examined, total;
3662 	uint_t rate;
3663 	double fraction_done;
3664 	char processed_buf[7], examined_buf[7], total_buf[7], rate_buf[7];
3665 
3666 	(void) printf(gettext("  scan: "));
3667 
3668 	/* If there's never been a scan, there's not much to say. */
3669 	if (ps == NULL || ps->pss_func == POOL_SCAN_NONE ||
3670 	    ps->pss_func >= POOL_SCAN_FUNCS) {
3671 		(void) printf(gettext("none requested\n"));
3672 		return;
3673 	}
3674 
3675 	start = ps->pss_start_time;
3676 	end = ps->pss_end_time;
3677 	zfs_nicenum(ps->pss_processed, processed_buf, sizeof (processed_buf));
3678 
3679 	assert(ps->pss_func == POOL_SCAN_SCRUB ||
3680 	    ps->pss_func == POOL_SCAN_RESILVER);
3681 	/*
3682 	 * Scan is finished or canceled.
3683 	 */
3684 	if (ps->pss_state == DSS_FINISHED) {
3685 		uint64_t minutes_taken = (end - start) / 60;
3686 		char *fmt;
3687 
3688 		if (ps->pss_func == POOL_SCAN_SCRUB) {
3689 			fmt = gettext("scrub repaired %s in %lluh%um with "
3690 			    "%llu errors on %s");
3691 		} else if (ps->pss_func == POOL_SCAN_RESILVER) {
3692 			fmt = gettext("resilvered %s in %lluh%um with "
3693 			    "%llu errors on %s");
3694 		}
3695 		/* LINTED */
3696 		(void) printf(fmt, processed_buf,
3697 		    (u_longlong_t)(minutes_taken / 60),
3698 		    (uint_t)(minutes_taken % 60),
3699 		    (u_longlong_t)ps->pss_errors,
3700 		    ctime((time_t *)&end));
3701 		return;
3702 	} else if (ps->pss_state == DSS_CANCELED) {
3703 		if (ps->pss_func == POOL_SCAN_SCRUB) {
3704 			(void) printf(gettext("scrub canceled on %s"),
3705 			    ctime(&end));
3706 		} else if (ps->pss_func == POOL_SCAN_RESILVER) {
3707 			(void) printf(gettext("resilver canceled on %s"),
3708 			    ctime(&end));
3709 		}
3710 		return;
3711 	}
3712 
3713 	assert(ps->pss_state == DSS_SCANNING);
3714 
3715 	/*
3716 	 * Scan is in progress.
3717 	 */
3718 	if (ps->pss_func == POOL_SCAN_SCRUB) {
3719 		(void) printf(gettext("scrub in progress since %s"),
3720 		    ctime(&start));
3721 	} else if (ps->pss_func == POOL_SCAN_RESILVER) {
3722 		(void) printf(gettext("resilver in progress since %s"),
3723 		    ctime(&start));
3724 	}
3725 
3726 	examined = ps->pss_examined ? ps->pss_examined : 1;
3727 	total = ps->pss_to_examine;
3728 	fraction_done = (double)examined / total;
3729 
3730 	/* elapsed time for this pass */
3731 	elapsed = time(NULL) - ps->pss_pass_start;
3732 	elapsed = elapsed ? elapsed : 1;
3733 	pass_exam = ps->pss_pass_exam ? ps->pss_pass_exam : 1;
3734 	rate = pass_exam / elapsed;
3735 	rate = rate ? rate : 1;
3736 	mins_left = ((total - examined) / rate) / 60;
3737 	hours_left = mins_left / 60;
3738 
3739 	zfs_nicenum(examined, examined_buf, sizeof (examined_buf));
3740 	zfs_nicenum(total, total_buf, sizeof (total_buf));
3741 	zfs_nicenum(rate, rate_buf, sizeof (rate_buf));
3742 
3743 	/*
3744 	 * do not print estimated time if hours_left is more than 30 days
3745 	 */
3746 	(void) printf(gettext("    %s scanned out of %s at %s/s"),
3747 	    examined_buf, total_buf, rate_buf);
3748 	if (hours_left < (30 * 24)) {
3749 		(void) printf(gettext(", %lluh%um to go\n"),
3750 		    (u_longlong_t)hours_left, (uint_t)(mins_left % 60));
3751 	} else {
3752 		(void) printf(gettext(
3753 		    ", (scan is slow, no estimated time)\n"));
3754 	}
3755 
3756 	if (ps->pss_func == POOL_SCAN_RESILVER) {
3757 		(void) printf(gettext("    %s resilvered, %.2f%% done\n"),
3758 		    processed_buf, 100 * fraction_done);
3759 	} else if (ps->pss_func == POOL_SCAN_SCRUB) {
3760 		(void) printf(gettext("    %s repaired, %.2f%% done\n"),
3761 		    processed_buf, 100 * fraction_done);
3762 	}
3763 }
3764 
3765 static void
3766 print_error_log(zpool_handle_t *zhp)
3767 {
3768 	nvlist_t *nverrlist = NULL;
3769 	nvpair_t *elem;
3770 	char *pathname;
3771 	size_t len = MAXPATHLEN * 2;
3772 
3773 	if (zpool_get_errlog(zhp, &nverrlist) != 0) {
3774 		(void) printf("errors: List of errors unavailable "
3775 		    "(insufficient privileges)\n");
3776 		return;
3777 	}
3778 
3779 	(void) printf("errors: Permanent errors have been "
3780 	    "detected in the following files:\n\n");
3781 
3782 	pathname = safe_malloc(len);
3783 	elem = NULL;
3784 	while ((elem = nvlist_next_nvpair(nverrlist, elem)) != NULL) {
3785 		nvlist_t *nv;
3786 		uint64_t dsobj, obj;
3787 
3788 		verify(nvpair_value_nvlist(elem, &nv) == 0);
3789 		verify(nvlist_lookup_uint64(nv, ZPOOL_ERR_DATASET,
3790 		    &dsobj) == 0);
3791 		verify(nvlist_lookup_uint64(nv, ZPOOL_ERR_OBJECT,
3792 		    &obj) == 0);
3793 		zpool_obj_to_path(zhp, dsobj, obj, pathname, len);
3794 		(void) printf("%7s %s\n", "", pathname);
3795 	}
3796 	free(pathname);
3797 	nvlist_free(nverrlist);
3798 }
3799 
3800 static void
3801 print_spares(zpool_handle_t *zhp, nvlist_t **spares, uint_t nspares,
3802     int namewidth)
3803 {
3804 	uint_t i;
3805 	char *name;
3806 
3807 	if (nspares == 0)
3808 		return;
3809 
3810 	(void) printf(gettext("\tspares\n"));
3811 
3812 	for (i = 0; i < nspares; i++) {
3813 		name = zpool_vdev_name(g_zfs, zhp, spares[i], B_FALSE);
3814 		print_status_config(zhp, name, spares[i],
3815 		    namewidth, 2, B_TRUE);
3816 		free(name);
3817 	}
3818 }
3819 
3820 static void
3821 print_l2cache(zpool_handle_t *zhp, nvlist_t **l2cache, uint_t nl2cache,
3822     int namewidth)
3823 {
3824 	uint_t i;
3825 	char *name;
3826 
3827 	if (nl2cache == 0)
3828 		return;
3829 
3830 	(void) printf(gettext("\tcache\n"));
3831 
3832 	for (i = 0; i < nl2cache; i++) {
3833 		name = zpool_vdev_name(g_zfs, zhp, l2cache[i], B_FALSE);
3834 		print_status_config(zhp, name, l2cache[i],
3835 		    namewidth, 2, B_FALSE);
3836 		free(name);
3837 	}
3838 }
3839 
3840 static void
3841 print_dedup_stats(nvlist_t *config)
3842 {
3843 	ddt_histogram_t *ddh;
3844 	ddt_stat_t *dds;
3845 	ddt_object_t *ddo;
3846 	uint_t c;
3847 
3848 	/*
3849 	 * If the pool was faulted then we may not have been able to
3850 	 * obtain the config. Otherwise, if we have anything in the dedup
3851 	 * table continue processing the stats.
3852 	 */
3853 	if (nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_DDT_OBJ_STATS,
3854 	    (uint64_t **)&ddo, &c) != 0)
3855 		return;
3856 
3857 	(void) printf("\n");
3858 	(void) printf(gettext(" dedup: "));
3859 	if (ddo->ddo_count == 0) {
3860 		(void) printf(gettext("no DDT entries\n"));
3861 		return;
3862 	}
3863 
3864 	(void) printf("DDT entries %llu, size %llu on disk, %llu in core\n",
3865 	    (u_longlong_t)ddo->ddo_count,
3866 	    (u_longlong_t)ddo->ddo_dspace,
3867 	    (u_longlong_t)ddo->ddo_mspace);
3868 
3869 	verify(nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_DDT_STATS,
3870 	    (uint64_t **)&dds, &c) == 0);
3871 	verify(nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_DDT_HISTOGRAM,
3872 	    (uint64_t **)&ddh, &c) == 0);
3873 	zpool_dump_ddt(dds, ddh);
3874 }
3875 
3876 /*
3877  * Display a summary of pool status.  Displays a summary such as:
3878  *
3879  *        pool: tank
3880  *	status: DEGRADED
3881  *	reason: One or more devices ...
3882  *         see: http://illumos.org/msg/ZFS-xxxx-01
3883  *	config:
3884  *		mirror		DEGRADED
3885  *                c1t0d0	OK
3886  *                c2t0d0	UNAVAIL
3887  *
3888  * When given the '-v' option, we print out the complete config.  If the '-e'
3889  * option is specified, then we print out error rate information as well.
3890  */
3891 int
3892 status_callback(zpool_handle_t *zhp, void *data)
3893 {
3894 	status_cbdata_t *cbp = data;
3895 	nvlist_t *config, *nvroot;
3896 	char *msgid;
3897 	int reason;
3898 	const char *health;
3899 	uint_t c;
3900 	vdev_stat_t *vs;
3901 
3902 	config = zpool_get_config(zhp, NULL);
3903 	reason = zpool_get_status(zhp, &msgid);
3904 
3905 	cbp->cb_count++;
3906 
3907 	/*
3908 	 * If we were given 'zpool status -x', only report those pools with
3909 	 * problems.
3910 	 */
3911 	if (reason == ZPOOL_STATUS_OK && cbp->cb_explain) {
3912 		if (!cbp->cb_allpools) {
3913 			(void) printf(gettext("pool '%s' is healthy\n"),
3914 			    zpool_get_name(zhp));
3915 			if (cbp->cb_first)
3916 				cbp->cb_first = B_FALSE;
3917 		}
3918 		return (0);
3919 	}
3920 
3921 	if (cbp->cb_first)
3922 		cbp->cb_first = B_FALSE;
3923 	else
3924 		(void) printf("\n");
3925 
3926 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
3927 	    &nvroot) == 0);
3928 	verify(nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_VDEV_STATS,
3929 	    (uint64_t **)&vs, &c) == 0);
3930 	health = zpool_state_to_name(vs->vs_state, vs->vs_aux);
3931 
3932 	(void) printf(gettext("  pool: %s\n"), zpool_get_name(zhp));
3933 	(void) printf(gettext(" state: %s\n"), health);
3934 
3935 	switch (reason) {
3936 	case ZPOOL_STATUS_MISSING_DEV_R:
3937 		(void) printf(gettext("status: One or more devices could not "
3938 		    "be opened.  Sufficient replicas exist for\n\tthe pool to "
3939 		    "continue functioning in a degraded state.\n"));
3940 		(void) printf(gettext("action: Attach the missing device and "
3941 		    "online it using 'zpool online'.\n"));
3942 		break;
3943 
3944 	case ZPOOL_STATUS_MISSING_DEV_NR:
3945 		(void) printf(gettext("status: One or more devices could not "
3946 		    "be opened.  There are insufficient\n\treplicas for the "
3947 		    "pool to continue functioning.\n"));
3948 		(void) printf(gettext("action: Attach the missing device and "
3949 		    "online it using 'zpool online'.\n"));
3950 		break;
3951 
3952 	case ZPOOL_STATUS_CORRUPT_LABEL_R:
3953 		(void) printf(gettext("status: One or more devices could not "
3954 		    "be used because the label is missing or\n\tinvalid.  "
3955 		    "Sufficient replicas exist for the pool to continue\n\t"
3956 		    "functioning in a degraded state.\n"));
3957 		(void) printf(gettext("action: Replace the device using "
3958 		    "'zpool replace'.\n"));
3959 		break;
3960 
3961 	case ZPOOL_STATUS_CORRUPT_LABEL_NR:
3962 		(void) printf(gettext("status: One or more devices could not "
3963 		    "be used because the label is missing \n\tor invalid.  "
3964 		    "There are insufficient replicas for the pool to "
3965 		    "continue\n\tfunctioning.\n"));
3966 		zpool_explain_recover(zpool_get_handle(zhp),
3967 		    zpool_get_name(zhp), reason, config);
3968 		break;
3969 
3970 	case ZPOOL_STATUS_FAILING_DEV:
3971 		(void) printf(gettext("status: One or more devices has "
3972 		    "experienced an unrecoverable error.  An\n\tattempt was "
3973 		    "made to correct the error.  Applications are "
3974 		    "unaffected.\n"));
3975 		(void) printf(gettext("action: Determine if the device needs "
3976 		    "to be replaced, and clear the errors\n\tusing "
3977 		    "'zpool clear' or replace the device with 'zpool "
3978 		    "replace'.\n"));
3979 		break;
3980 
3981 	case ZPOOL_STATUS_OFFLINE_DEV:
3982 		(void) printf(gettext("status: One or more devices has "
3983 		    "been taken offline by the administrator.\n\tSufficient "
3984 		    "replicas exist for the pool to continue functioning in "
3985 		    "a\n\tdegraded state.\n"));
3986 		(void) printf(gettext("action: Online the device using "
3987 		    "'zpool online' or replace the device with\n\t'zpool "
3988 		    "replace'.\n"));
3989 		break;
3990 
3991 	case ZPOOL_STATUS_REMOVED_DEV:
3992 		(void) printf(gettext("status: One or more devices has "
3993 		    "been removed by the administrator.\n\tSufficient "
3994 		    "replicas exist for the pool to continue functioning in "
3995 		    "a\n\tdegraded state.\n"));
3996 		(void) printf(gettext("action: Online the device using "
3997 		    "'zpool online' or replace the device with\n\t'zpool "
3998 		    "replace'.\n"));
3999 		break;
4000 
4001 	case ZPOOL_STATUS_RESILVERING:
4002 		(void) printf(gettext("status: One or more devices is "
4003 		    "currently being resilvered.  The pool will\n\tcontinue "
4004 		    "to function, possibly in a degraded state.\n"));
4005 		(void) printf(gettext("action: Wait for the resilver to "
4006 		    "complete.\n"));
4007 		break;
4008 
4009 	case ZPOOL_STATUS_CORRUPT_DATA:
4010 		(void) printf(gettext("status: One or more devices has "
4011 		    "experienced an error resulting in data\n\tcorruption.  "
4012 		    "Applications may be affected.\n"));
4013 		(void) printf(gettext("action: Restore the file in question "
4014 		    "if possible.  Otherwise restore the\n\tentire pool from "
4015 		    "backup.\n"));
4016 		break;
4017 
4018 	case ZPOOL_STATUS_CORRUPT_POOL:
4019 		(void) printf(gettext("status: The pool metadata is corrupted "
4020 		    "and the pool cannot be opened.\n"));
4021 		zpool_explain_recover(zpool_get_handle(zhp),
4022 		    zpool_get_name(zhp), reason, config);
4023 		break;
4024 
4025 	case ZPOOL_STATUS_VERSION_OLDER:
4026 		(void) printf(gettext("status: The pool is formatted using a "
4027 		    "legacy on-disk format.  The pool can\n\tstill be used, "
4028 		    "but some features are unavailable.\n"));
4029 		(void) printf(gettext("action: Upgrade the pool using 'zpool "
4030 		    "upgrade'.  Once this is done, the\n\tpool will no longer "
4031 		    "be accessible on software that does not support feature\n"
4032 		    "\tflags.\n"));
4033 		break;
4034 
4035 	case ZPOOL_STATUS_VERSION_NEWER:
4036 		(void) printf(gettext("status: The pool has been upgraded to a "
4037 		    "newer, incompatible on-disk version.\n\tThe pool cannot "
4038 		    "be accessed on this system.\n"));
4039 		(void) printf(gettext("action: Access the pool from a system "
4040 		    "running more recent software, or\n\trestore the pool from "
4041 		    "backup.\n"));
4042 		break;
4043 
4044 	case ZPOOL_STATUS_FEAT_DISABLED:
4045 		(void) printf(gettext("status: Some supported features are not "
4046 		    "enabled on the pool. The pool can\n\tstill be used, but "
4047 		    "some features are unavailable.\n"));
4048 		(void) printf(gettext("action: Enable all features using "
4049 		    "'zpool upgrade'. Once this is done,\n\tthe pool may no "
4050 		    "longer be accessible by software that does not support\n\t"
4051 		    "the features. See zpool-features(5) for details.\n"));
4052 		break;
4053 
4054 	case ZPOOL_STATUS_UNSUP_FEAT_READ:
4055 		(void) printf(gettext("status: The pool cannot be accessed on "
4056 		    "this system because it uses the\n\tfollowing feature(s) "
4057 		    "not supported on this system:\n"));
4058 		zpool_print_unsup_feat(config);
4059 		(void) printf("\n");
4060 		(void) printf(gettext("action: Access the pool from a system "
4061 		    "that supports the required feature(s),\n\tor restore the "
4062 		    "pool from backup.\n"));
4063 		break;
4064 
4065 	case ZPOOL_STATUS_UNSUP_FEAT_WRITE:
4066 		(void) printf(gettext("status: The pool can only be accessed "
4067 		    "in read-only mode on this system. It\n\tcannot be "
4068 		    "accessed in read-write mode because it uses the "
4069 		    "following\n\tfeature(s) not supported on this system:\n"));
4070 		zpool_print_unsup_feat(config);
4071 		(void) printf("\n");
4072 		(void) printf(gettext("action: The pool cannot be accessed in "
4073 		    "read-write mode. Import the pool with\n"
4074 		    "\t\"-o readonly=on\", access the pool from a system that "
4075 		    "supports the\n\trequired feature(s), or restore the "
4076 		    "pool from backup.\n"));
4077 		break;
4078 
4079 	case ZPOOL_STATUS_FAULTED_DEV_R:
4080 		(void) printf(gettext("status: One or more devices are "
4081 		    "faulted in response to persistent errors.\n\tSufficient "
4082 		    "replicas exist for the pool to continue functioning "
4083 		    "in a\n\tdegraded state.\n"));
4084 		(void) printf(gettext("action: Replace the faulted device, "
4085 		    "or use 'zpool clear' to mark the device\n\trepaired.\n"));
4086 		break;
4087 
4088 	case ZPOOL_STATUS_FAULTED_DEV_NR:
4089 		(void) printf(gettext("status: One or more devices are "
4090 		    "faulted in response to persistent errors.  There are "
4091 		    "insufficient replicas for the pool to\n\tcontinue "
4092 		    "functioning.\n"));
4093 		(void) printf(gettext("action: Destroy and re-create the pool "
4094 		    "from a backup source.  Manually marking the device\n"
4095 		    "\trepaired using 'zpool clear' may allow some data "
4096 		    "to be recovered.\n"));
4097 		break;
4098 
4099 	case ZPOOL_STATUS_IO_FAILURE_WAIT:
4100 	case ZPOOL_STATUS_IO_FAILURE_CONTINUE:
4101 		(void) printf(gettext("status: One or more devices are "
4102 		    "faulted in response to IO failures.\n"));
4103 		(void) printf(gettext("action: Make sure the affected devices "
4104 		    "are connected, then run 'zpool clear'.\n"));
4105 		break;
4106 
4107 	case ZPOOL_STATUS_BAD_LOG:
4108 		(void) printf(gettext("status: An intent log record "
4109 		    "could not be read.\n"
4110 		    "\tWaiting for adminstrator intervention to fix the "
4111 		    "faulted pool.\n"));
4112 		(void) printf(gettext("action: Either restore the affected "
4113 		    "device(s) and run 'zpool online',\n"
4114 		    "\tor ignore the intent log records by running "
4115 		    "'zpool clear'.\n"));
4116 		break;
4117 
4118 	default:
4119 		/*
4120 		 * The remaining errors can't actually be generated, yet.
4121 		 */
4122 		assert(reason == ZPOOL_STATUS_OK);
4123 	}
4124 
4125 	if (msgid != NULL)
4126 		(void) printf(gettext("   see: http://illumos.org/msg/%s\n"),
4127 		    msgid);
4128 
4129 	if (config != NULL) {
4130 		int namewidth;
4131 		uint64_t nerr;
4132 		nvlist_t **spares, **l2cache;
4133 		uint_t nspares, nl2cache;
4134 		pool_scan_stat_t *ps = NULL;
4135 
4136 		(void) nvlist_lookup_uint64_array(nvroot,
4137 		    ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &c);
4138 		print_scan_status(ps);
4139 
4140 		namewidth = max_width(zhp, nvroot, 0, 0);
4141 		if (namewidth < 10)
4142 			namewidth = 10;
4143 
4144 		(void) printf(gettext("config:\n\n"));
4145 		(void) printf(gettext("\t%-*s  %-8s %5s %5s %5s\n"), namewidth,
4146 		    "NAME", "STATE", "READ", "WRITE", "CKSUM");
4147 		print_status_config(zhp, zpool_get_name(zhp), nvroot,
4148 		    namewidth, 0, B_FALSE);
4149 
4150 		if (num_logs(nvroot) > 0)
4151 			print_logs(zhp, nvroot, namewidth, B_TRUE);
4152 		if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
4153 		    &l2cache, &nl2cache) == 0)
4154 			print_l2cache(zhp, l2cache, nl2cache, namewidth);
4155 
4156 		if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
4157 		    &spares, &nspares) == 0)
4158 			print_spares(zhp, spares, nspares, namewidth);
4159 
4160 		if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_ERRCOUNT,
4161 		    &nerr) == 0) {
4162 			nvlist_t *nverrlist = NULL;
4163 
4164 			/*
4165 			 * If the approximate error count is small, get a
4166 			 * precise count by fetching the entire log and
4167 			 * uniquifying the results.
4168 			 */
4169 			if (nerr > 0 && nerr < 100 && !cbp->cb_verbose &&
4170 			    zpool_get_errlog(zhp, &nverrlist) == 0) {
4171 				nvpair_t *elem;
4172 
4173 				elem = NULL;
4174 				nerr = 0;
4175 				while ((elem = nvlist_next_nvpair(nverrlist,
4176 				    elem)) != NULL) {
4177 					nerr++;
4178 				}
4179 			}
4180 			nvlist_free(nverrlist);
4181 
4182 			(void) printf("\n");
4183 
4184 			if (nerr == 0)
4185 				(void) printf(gettext("errors: No known data "
4186 				    "errors\n"));
4187 			else if (!cbp->cb_verbose)
4188 				(void) printf(gettext("errors: %llu data "
4189 				    "errors, use '-v' for a list\n"),
4190 				    (u_longlong_t)nerr);
4191 			else
4192 				print_error_log(zhp);
4193 		}
4194 
4195 		if (cbp->cb_dedup_stats)
4196 			print_dedup_stats(config);
4197 	} else {
4198 		(void) printf(gettext("config: The configuration cannot be "
4199 		    "determined.\n"));
4200 	}
4201 
4202 	return (0);
4203 }
4204 
4205 /*
4206  * zpool status [-vx] [-T d|u] [pool] ... [interval [count]]
4207  *
4208  *	-v	Display complete error logs
4209  *	-x	Display only pools with potential problems
4210  *	-D	Display dedup status (undocumented)
4211  *	-T	Display a timestamp in date(1) or Unix format
4212  *
4213  * Describes the health status of all pools or some subset.
4214  */
4215 int
4216 zpool_do_status(int argc, char **argv)
4217 {
4218 	int c;
4219 	int ret;
4220 	unsigned long interval = 0, count = 0;
4221 	status_cbdata_t cb = { 0 };
4222 
4223 	/* check options */
4224 	while ((c = getopt(argc, argv, "vxDT:")) != -1) {
4225 		switch (c) {
4226 		case 'v':
4227 			cb.cb_verbose = B_TRUE;
4228 			break;
4229 		case 'x':
4230 			cb.cb_explain = B_TRUE;
4231 			break;
4232 		case 'D':
4233 			cb.cb_dedup_stats = B_TRUE;
4234 			break;
4235 		case 'T':
4236 			get_timestamp_arg(*optarg);
4237 			break;
4238 		case '?':
4239 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
4240 			    optopt);
4241 			usage(B_FALSE);
4242 		}
4243 	}
4244 
4245 	argc -= optind;
4246 	argv += optind;
4247 
4248 	get_interval_count(&argc, argv, &interval, &count);
4249 
4250 	if (argc == 0)
4251 		cb.cb_allpools = B_TRUE;
4252 
4253 	cb.cb_first = B_TRUE;
4254 
4255 	for (;;) {
4256 		if (timestamp_fmt != NODATE)
4257 			print_timestamp(timestamp_fmt);
4258 
4259 		ret = for_each_pool(argc, argv, B_TRUE, NULL,
4260 		    status_callback, &cb);
4261 
4262 		if (argc == 0 && cb.cb_count == 0)
4263 			(void) printf(gettext("no pools available\n"));
4264 		else if (cb.cb_explain && cb.cb_first && cb.cb_allpools)
4265 			(void) printf(gettext("all pools are healthy\n"));
4266 
4267 		if (ret != 0)
4268 			return (ret);
4269 
4270 		if (interval == 0)
4271 			break;
4272 
4273 		if (count != 0 && --count == 0)
4274 			break;
4275 
4276 		(void) sleep(interval);
4277 	}
4278 
4279 	return (0);
4280 }
4281 
4282 typedef struct upgrade_cbdata {
4283 	int	cb_first;
4284 	int	cb_argc;
4285 	uint64_t cb_version;
4286 	char	**cb_argv;
4287 } upgrade_cbdata_t;
4288 
4289 static int
4290 upgrade_version(zpool_handle_t *zhp, uint64_t version)
4291 {
4292 	int ret;
4293 	nvlist_t *config;
4294 	uint64_t oldversion;
4295 
4296 	config = zpool_get_config(zhp, NULL);
4297 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
4298 	    &oldversion) == 0);
4299 
4300 	assert(SPA_VERSION_IS_SUPPORTED(oldversion));
4301 	assert(oldversion < version);
4302 
4303 	ret = zpool_upgrade(zhp, version);
4304 	if (ret != 0)
4305 		return (ret);
4306 
4307 	if (version >= SPA_VERSION_FEATURES) {
4308 		(void) printf(gettext("Successfully upgraded "
4309 		    "'%s' from version %llu to feature flags.\n"),
4310 		    zpool_get_name(zhp), oldversion);
4311 	} else {
4312 		(void) printf(gettext("Successfully upgraded "
4313 		    "'%s' from version %llu to version %llu.\n"),
4314 		    zpool_get_name(zhp), oldversion, version);
4315 	}
4316 
4317 	return (0);
4318 }
4319 
4320 static int
4321 upgrade_enable_all(zpool_handle_t *zhp, int *countp)
4322 {
4323 	int i, ret, count;
4324 	boolean_t firstff = B_TRUE;
4325 	nvlist_t *enabled = zpool_get_features(zhp);
4326 
4327 	count = 0;
4328 	for (i = 0; i < SPA_FEATURES; i++) {
4329 		const char *fname = spa_feature_table[i].fi_uname;
4330 		const char *fguid = spa_feature_table[i].fi_guid;
4331 		if (!nvlist_exists(enabled, fguid)) {
4332 			char *propname;
4333 			verify(-1 != asprintf(&propname, "feature@%s", fname));
4334 			ret = zpool_set_prop(zhp, propname,
4335 			    ZFS_FEATURE_ENABLED);
4336 			if (ret != 0) {
4337 				free(propname);
4338 				return (ret);
4339 			}
4340 			count++;
4341 
4342 			if (firstff) {
4343 				(void) printf(gettext("Enabled the "
4344 				    "following features on '%s':\n"),
4345 				    zpool_get_name(zhp));
4346 				firstff = B_FALSE;
4347 			}
4348 			(void) printf(gettext("  %s\n"), fname);
4349 			free(propname);
4350 		}
4351 	}
4352 
4353 	if (countp != NULL)
4354 		*countp = count;
4355 	return (0);
4356 }
4357 
4358 static int
4359 upgrade_cb(zpool_handle_t *zhp, void *arg)
4360 {
4361 	upgrade_cbdata_t *cbp = arg;
4362 	nvlist_t *config;
4363 	uint64_t version;
4364 	boolean_t printnl = B_FALSE;
4365 	int ret;
4366 
4367 	config = zpool_get_config(zhp, NULL);
4368 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
4369 	    &version) == 0);
4370 
4371 	assert(SPA_VERSION_IS_SUPPORTED(version));
4372 
4373 	if (version < cbp->cb_version) {
4374 		cbp->cb_first = B_FALSE;
4375 		ret = upgrade_version(zhp, cbp->cb_version);
4376 		if (ret != 0)
4377 			return (ret);
4378 		printnl = B_TRUE;
4379 
4380 		/*
4381 		 * If they did "zpool upgrade -a", then we could
4382 		 * be doing ioctls to different pools.  We need
4383 		 * to log this history once to each pool, and bypass
4384 		 * the normal history logging that happens in main().
4385 		 */
4386 		(void) zpool_log_history(g_zfs, history_str);
4387 		log_history = B_FALSE;
4388 	}
4389 
4390 	if (cbp->cb_version >= SPA_VERSION_FEATURES) {
4391 		int count;
4392 		ret = upgrade_enable_all(zhp, &count);
4393 		if (ret != 0)
4394 			return (ret);
4395 
4396 		if (count > 0) {
4397 			cbp->cb_first = B_FALSE;
4398 			printnl = B_TRUE;
4399 		}
4400 	}
4401 
4402 	if (printnl) {
4403 		(void) printf(gettext("\n"));
4404 	}
4405 
4406 	return (0);
4407 }
4408 
4409 static int
4410 upgrade_list_older_cb(zpool_handle_t *zhp, void *arg)
4411 {
4412 	upgrade_cbdata_t *cbp = arg;
4413 	nvlist_t *config;
4414 	uint64_t version;
4415 
4416 	config = zpool_get_config(zhp, NULL);
4417 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
4418 	    &version) == 0);
4419 
4420 	assert(SPA_VERSION_IS_SUPPORTED(version));
4421 
4422 	if (version < SPA_VERSION_FEATURES) {
4423 		if (cbp->cb_first) {
4424 			(void) printf(gettext("The following pools are "
4425 			    "formatted with legacy version numbers and can\n"
4426 			    "be upgraded to use feature flags.  After "
4427 			    "being upgraded, these pools\nwill no "
4428 			    "longer be accessible by software that does not "
4429 			    "support feature\nflags.\n\n"));
4430 			(void) printf(gettext("VER  POOL\n"));
4431 			(void) printf(gettext("---  ------------\n"));
4432 			cbp->cb_first = B_FALSE;
4433 		}
4434 
4435 		(void) printf("%2llu   %s\n", (u_longlong_t)version,
4436 		    zpool_get_name(zhp));
4437 	}
4438 
4439 	return (0);
4440 }
4441 
4442 static int
4443 upgrade_list_disabled_cb(zpool_handle_t *zhp, void *arg)
4444 {
4445 	upgrade_cbdata_t *cbp = arg;
4446 	nvlist_t *config;
4447 	uint64_t version;
4448 
4449 	config = zpool_get_config(zhp, NULL);
4450 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
4451 	    &version) == 0);
4452 
4453 	if (version >= SPA_VERSION_FEATURES) {
4454 		int i;
4455 		boolean_t poolfirst = B_TRUE;
4456 		nvlist_t *enabled = zpool_get_features(zhp);
4457 
4458 		for (i = 0; i < SPA_FEATURES; i++) {
4459 			const char *fguid = spa_feature_table[i].fi_guid;
4460 			const char *fname = spa_feature_table[i].fi_uname;
4461 			if (!nvlist_exists(enabled, fguid)) {
4462 				if (cbp->cb_first) {
4463 					(void) printf(gettext("\nSome "
4464 					    "supported features are not "
4465 					    "enabled on the following pools. "
4466 					    "Once a\nfeature is enabled the "
4467 					    "pool may become incompatible with "
4468 					    "software\nthat does not support "
4469 					    "the feature. See "
4470 					    "zpool-features(5) for "
4471 					    "details.\n\n"));
4472 					(void) printf(gettext("POOL  "
4473 					    "FEATURE\n"));
4474 					(void) printf(gettext("------"
4475 					    "---------\n"));
4476 					cbp->cb_first = B_FALSE;
4477 				}
4478 
4479 				if (poolfirst) {
4480 					(void) printf(gettext("%s\n"),
4481 					    zpool_get_name(zhp));
4482 					poolfirst = B_FALSE;
4483 				}
4484 
4485 				(void) printf(gettext("      %s\n"), fname);
4486 			}
4487 		}
4488 	}
4489 
4490 	return (0);
4491 }
4492 
4493 /* ARGSUSED */
4494 static int
4495 upgrade_one(zpool_handle_t *zhp, void *data)
4496 {
4497 	boolean_t printnl = B_FALSE;
4498 	upgrade_cbdata_t *cbp = data;
4499 	uint64_t cur_version;
4500 	int ret;
4501 
4502 	if (strcmp("log", zpool_get_name(zhp)) == 0) {
4503 		(void) printf(gettext("'log' is now a reserved word\n"
4504 		    "Pool 'log' must be renamed using export and import"
4505 		    " to upgrade.\n"));
4506 		return (1);
4507 	}
4508 
4509 	cur_version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
4510 	if (cur_version > cbp->cb_version) {
4511 		(void) printf(gettext("Pool '%s' is already formatted "
4512 		    "using more current version '%llu'.\n\n"),
4513 		    zpool_get_name(zhp), cur_version);
4514 		return (0);
4515 	}
4516 
4517 	if (cbp->cb_version != SPA_VERSION && cur_version == cbp->cb_version) {
4518 		(void) printf(gettext("Pool '%s' is already formatted "
4519 		    "using version %llu.\n\n"), zpool_get_name(zhp),
4520 		    cbp->cb_version);
4521 		return (0);
4522 	}
4523 
4524 	if (cur_version != cbp->cb_version) {
4525 		printnl = B_TRUE;
4526 		ret = upgrade_version(zhp, cbp->cb_version);
4527 		if (ret != 0)
4528 			return (ret);
4529 	}
4530 
4531 	if (cbp->cb_version >= SPA_VERSION_FEATURES) {
4532 		int count = 0;
4533 		ret = upgrade_enable_all(zhp, &count);
4534 		if (ret != 0)
4535 			return (ret);
4536 
4537 		if (count != 0) {
4538 			printnl = B_TRUE;
4539 		} else if (cur_version == SPA_VERSION) {
4540 			(void) printf(gettext("Pool '%s' already has all "
4541 			    "supported features enabled.\n"),
4542 			    zpool_get_name(zhp));
4543 		}
4544 	}
4545 
4546 	if (printnl) {
4547 		(void) printf(gettext("\n"));
4548 	}
4549 
4550 	return (0);
4551 }
4552 
4553 /*
4554  * zpool upgrade
4555  * zpool upgrade -v
4556  * zpool upgrade [-V version] <-a | pool ...>
4557  *
4558  * With no arguments, display downrev'd ZFS pool available for upgrade.
4559  * Individual pools can be upgraded by specifying the pool, and '-a' will
4560  * upgrade all pools.
4561  */
4562 int
4563 zpool_do_upgrade(int argc, char **argv)
4564 {
4565 	int c;
4566 	upgrade_cbdata_t cb = { 0 };
4567 	int ret = 0;
4568 	boolean_t showversions = B_FALSE;
4569 	boolean_t upgradeall = B_FALSE;
4570 	char *end;
4571 
4572 
4573 	/* check options */
4574 	while ((c = getopt(argc, argv, ":avV:")) != -1) {
4575 		switch (c) {
4576 		case 'a':
4577 			upgradeall = B_TRUE;
4578 			break;
4579 		case 'v':
4580 			showversions = B_TRUE;
4581 			break;
4582 		case 'V':
4583 			cb.cb_version = strtoll(optarg, &end, 10);
4584 			if (*end != '\0' ||
4585 			    !SPA_VERSION_IS_SUPPORTED(cb.cb_version)) {
4586 				(void) fprintf(stderr,
4587 				    gettext("invalid version '%s'\n"), optarg);
4588 				usage(B_FALSE);
4589 			}
4590 			break;
4591 		case ':':
4592 			(void) fprintf(stderr, gettext("missing argument for "
4593 			    "'%c' option\n"), optopt);
4594 			usage(B_FALSE);
4595 			break;
4596 		case '?':
4597 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
4598 			    optopt);
4599 			usage(B_FALSE);
4600 		}
4601 	}
4602 
4603 	cb.cb_argc = argc;
4604 	cb.cb_argv = argv;
4605 	argc -= optind;
4606 	argv += optind;
4607 
4608 	if (cb.cb_version == 0) {
4609 		cb.cb_version = SPA_VERSION;
4610 	} else if (!upgradeall && argc == 0) {
4611 		(void) fprintf(stderr, gettext("-V option is "
4612 		    "incompatible with other arguments\n"));
4613 		usage(B_FALSE);
4614 	}
4615 
4616 	if (showversions) {
4617 		if (upgradeall || argc != 0) {
4618 			(void) fprintf(stderr, gettext("-v option is "
4619 			    "incompatible with other arguments\n"));
4620 			usage(B_FALSE);
4621 		}
4622 	} else if (upgradeall) {
4623 		if (argc != 0) {
4624 			(void) fprintf(stderr, gettext("-a option should not "
4625 			    "be used along with a pool name\n"));
4626 			usage(B_FALSE);
4627 		}
4628 	}
4629 
4630 	(void) printf(gettext("This system supports ZFS pool feature "
4631 	    "flags.\n\n"));
4632 	if (showversions) {
4633 		int i;
4634 
4635 		(void) printf(gettext("The following features are "
4636 		    "supported:\n\n"));
4637 		(void) printf(gettext("FEAT DESCRIPTION\n"));
4638 		(void) printf("----------------------------------------------"
4639 		    "---------------\n");
4640 		for (i = 0; i < SPA_FEATURES; i++) {
4641 			zfeature_info_t *fi = &spa_feature_table[i];
4642 			const char *ro = fi->fi_can_readonly ?
4643 			    " (read-only compatible)" : "";
4644 
4645 			(void) printf("%-37s%s\n", fi->fi_uname, ro);
4646 			(void) printf("     %s\n", fi->fi_desc);
4647 		}
4648 		(void) printf("\n");
4649 
4650 		(void) printf(gettext("The following legacy versions are also "
4651 		    "supported:\n\n"));
4652 		(void) printf(gettext("VER  DESCRIPTION\n"));
4653 		(void) printf("---  -----------------------------------------"
4654 		    "---------------\n");
4655 		(void) printf(gettext(" 1   Initial ZFS version\n"));
4656 		(void) printf(gettext(" 2   Ditto blocks "
4657 		    "(replicated metadata)\n"));
4658 		(void) printf(gettext(" 3   Hot spares and double parity "
4659 		    "RAID-Z\n"));
4660 		(void) printf(gettext(" 4   zpool history\n"));
4661 		(void) printf(gettext(" 5   Compression using the gzip "
4662 		    "algorithm\n"));
4663 		(void) printf(gettext(" 6   bootfs pool property\n"));
4664 		(void) printf(gettext(" 7   Separate intent log devices\n"));
4665 		(void) printf(gettext(" 8   Delegated administration\n"));
4666 		(void) printf(gettext(" 9   refquota and refreservation "
4667 		    "properties\n"));
4668 		(void) printf(gettext(" 10  Cache devices\n"));
4669 		(void) printf(gettext(" 11  Improved scrub performance\n"));
4670 		(void) printf(gettext(" 12  Snapshot properties\n"));
4671 		(void) printf(gettext(" 13  snapused property\n"));
4672 		(void) printf(gettext(" 14  passthrough-x aclinherit\n"));
4673 		(void) printf(gettext(" 15  user/group space accounting\n"));
4674 		(void) printf(gettext(" 16  stmf property support\n"));
4675 		(void) printf(gettext(" 17  Triple-parity RAID-Z\n"));
4676 		(void) printf(gettext(" 18  Snapshot user holds\n"));
4677 		(void) printf(gettext(" 19  Log device removal\n"));
4678 		(void) printf(gettext(" 20  Compression using zle "
4679 		    "(zero-length encoding)\n"));
4680 		(void) printf(gettext(" 21  Deduplication\n"));
4681 		(void) printf(gettext(" 22  Received properties\n"));
4682 		(void) printf(gettext(" 23  Slim ZIL\n"));
4683 		(void) printf(gettext(" 24  System attributes\n"));
4684 		(void) printf(gettext(" 25  Improved scrub stats\n"));
4685 		(void) printf(gettext(" 26  Improved snapshot deletion "
4686 		    "performance\n"));
4687 		(void) printf(gettext(" 27  Improved snapshot creation "
4688 		    "performance\n"));
4689 		(void) printf(gettext(" 28  Multiple vdev replacements\n"));
4690 		(void) printf(gettext("\nFor more information on a particular "
4691 		    "version, including supported releases,\n"));
4692 		(void) printf(gettext("see the ZFS Administration Guide.\n\n"));
4693 	} else if (argc == 0 && upgradeall) {
4694 		cb.cb_first = B_TRUE;
4695 		ret = zpool_iter(g_zfs, upgrade_cb, &cb);
4696 		if (ret == 0 && cb.cb_first) {
4697 			if (cb.cb_version == SPA_VERSION) {
4698 				(void) printf(gettext("All pools are already "
4699 				    "formatted using feature flags.\n\n"));
4700 				(void) printf(gettext("Every feature flags "
4701 				    "pool already has all supported features "
4702 				    "enabled.\n"));
4703 			} else {
4704 				(void) printf(gettext("All pools are already "
4705 				    "formatted with version %llu or higher.\n"),
4706 				    cb.cb_version);
4707 			}
4708 		}
4709 	} else if (argc == 0) {
4710 		cb.cb_first = B_TRUE;
4711 		ret = zpool_iter(g_zfs, upgrade_list_older_cb, &cb);
4712 		assert(ret == 0);
4713 
4714 		if (cb.cb_first) {
4715 			(void) printf(gettext("All pools are formatted "
4716 			    "using feature flags.\n\n"));
4717 		} else {
4718 			(void) printf(gettext("\nUse 'zpool upgrade -v' "
4719 			    "for a list of available legacy versions.\n"));
4720 		}
4721 
4722 		cb.cb_first = B_TRUE;
4723 		ret = zpool_iter(g_zfs, upgrade_list_disabled_cb, &cb);
4724 		assert(ret == 0);
4725 
4726 		if (cb.cb_first) {
4727 			(void) printf(gettext("Every feature flags pool has "
4728 			    "all supported features enabled.\n"));
4729 		} else {
4730 			(void) printf(gettext("\n"));
4731 		}
4732 	} else {
4733 		ret = for_each_pool(argc, argv, B_FALSE, NULL,
4734 		    upgrade_one, &cb);
4735 	}
4736 
4737 	return (ret);
4738 }
4739 
4740 typedef struct hist_cbdata {
4741 	boolean_t first;
4742 	boolean_t longfmt;
4743 	boolean_t internal;
4744 } hist_cbdata_t;
4745 
4746 /*
4747  * Print out the command history for a specific pool.
4748  */
4749 static int
4750 get_history_one(zpool_handle_t *zhp, void *data)
4751 {
4752 	nvlist_t *nvhis;
4753 	nvlist_t **records;
4754 	uint_t numrecords;
4755 	int ret, i;
4756 	hist_cbdata_t *cb = (hist_cbdata_t *)data;
4757 
4758 	cb->first = B_FALSE;
4759 
4760 	(void) printf(gettext("History for '%s':\n"), zpool_get_name(zhp));
4761 
4762 	if ((ret = zpool_get_history(zhp, &nvhis)) != 0)
4763 		return (ret);
4764 
4765 	verify(nvlist_lookup_nvlist_array(nvhis, ZPOOL_HIST_RECORD,
4766 	    &records, &numrecords) == 0);
4767 	for (i = 0; i < numrecords; i++) {
4768 		nvlist_t *rec = records[i];
4769 		char tbuf[30] = "";
4770 
4771 		if (nvlist_exists(rec, ZPOOL_HIST_TIME)) {
4772 			time_t tsec;
4773 			struct tm t;
4774 
4775 			tsec = fnvlist_lookup_uint64(records[i],
4776 			    ZPOOL_HIST_TIME);
4777 			(void) localtime_r(&tsec, &t);
4778 			(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
4779 		}
4780 
4781 		if (nvlist_exists(rec, ZPOOL_HIST_CMD)) {
4782 			(void) printf("%s %s", tbuf,
4783 			    fnvlist_lookup_string(rec, ZPOOL_HIST_CMD));
4784 		} else if (nvlist_exists(rec, ZPOOL_HIST_INT_EVENT)) {
4785 			int ievent =
4786 			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_INT_EVENT);
4787 			if (!cb->internal)
4788 				continue;
4789 			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS) {
4790 				(void) printf("%s unrecognized record:\n",
4791 				    tbuf);
4792 				dump_nvlist(rec, 4);
4793 				continue;
4794 			}
4795 			(void) printf("%s [internal %s txg:%lld] %s", tbuf,
4796 			    zfs_history_event_names[ievent],
4797 			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_TXG),
4798 			    fnvlist_lookup_string(rec, ZPOOL_HIST_INT_STR));
4799 		} else if (nvlist_exists(rec, ZPOOL_HIST_INT_NAME)) {
4800 			if (!cb->internal)
4801 				continue;
4802 			(void) printf("%s [txg:%lld] %s", tbuf,
4803 			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_TXG),
4804 			    fnvlist_lookup_string(rec, ZPOOL_HIST_INT_NAME));
4805 			if (nvlist_exists(rec, ZPOOL_HIST_DSNAME)) {
4806 				(void) printf(" %s (%llu)",
4807 				    fnvlist_lookup_string(rec,
4808 				    ZPOOL_HIST_DSNAME),
4809 				    fnvlist_lookup_uint64(rec,
4810 				    ZPOOL_HIST_DSID));
4811 			}
4812 			(void) printf(" %s", fnvlist_lookup_string(rec,
4813 			    ZPOOL_HIST_INT_STR));
4814 		} else if (nvlist_exists(rec, ZPOOL_HIST_IOCTL)) {
4815 			if (!cb->internal)
4816 				continue;
4817 			(void) printf("%s ioctl %s\n", tbuf,
4818 			    fnvlist_lookup_string(rec, ZPOOL_HIST_IOCTL));
4819 			if (nvlist_exists(rec, ZPOOL_HIST_INPUT_NVL)) {
4820 				(void) printf("    input:\n");
4821 				dump_nvlist(fnvlist_lookup_nvlist(rec,
4822 				    ZPOOL_HIST_INPUT_NVL), 8);
4823 			}
4824 			if (nvlist_exists(rec, ZPOOL_HIST_OUTPUT_NVL)) {
4825 				(void) printf("    output:\n");
4826 				dump_nvlist(fnvlist_lookup_nvlist(rec,
4827 				    ZPOOL_HIST_OUTPUT_NVL), 8);
4828 			}
4829 		} else {
4830 			if (!cb->internal)
4831 				continue;
4832 			(void) printf("%s unrecognized record:\n", tbuf);
4833 			dump_nvlist(rec, 4);
4834 		}
4835 
4836 		if (!cb->longfmt) {
4837 			(void) printf("\n");
4838 			continue;
4839 		}
4840 		(void) printf(" [");
4841 		if (nvlist_exists(rec, ZPOOL_HIST_WHO)) {
4842 			uid_t who = fnvlist_lookup_uint64(rec, ZPOOL_HIST_WHO);
4843 			struct passwd *pwd = getpwuid(who);
4844 			(void) printf("user %d ", (int)who);
4845 			if (pwd != NULL)
4846 				(void) printf("(%s) ", pwd->pw_name);
4847 		}
4848 		if (nvlist_exists(rec, ZPOOL_HIST_HOST)) {
4849 			(void) printf("on %s",
4850 			    fnvlist_lookup_string(rec, ZPOOL_HIST_HOST));
4851 		}
4852 		if (nvlist_exists(rec, ZPOOL_HIST_ZONE)) {
4853 			(void) printf(":%s",
4854 			    fnvlist_lookup_string(rec, ZPOOL_HIST_ZONE));
4855 		}
4856 		(void) printf("]");
4857 		(void) printf("\n");
4858 	}
4859 	(void) printf("\n");
4860 	nvlist_free(nvhis);
4861 
4862 	return (ret);
4863 }
4864 
4865 /*
4866  * zpool history <pool>
4867  *
4868  * Displays the history of commands that modified pools.
4869  */
4870 int
4871 zpool_do_history(int argc, char **argv)
4872 {
4873 	hist_cbdata_t cbdata = { 0 };
4874 	int ret;
4875 	int c;
4876 
4877 	cbdata.first = B_TRUE;
4878 	/* check options */
4879 	while ((c = getopt(argc, argv, "li")) != -1) {
4880 		switch (c) {
4881 		case 'l':
4882 			cbdata.longfmt = B_TRUE;
4883 			break;
4884 		case 'i':
4885 			cbdata.internal = B_TRUE;
4886 			break;
4887 		case '?':
4888 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
4889 			    optopt);
4890 			usage(B_FALSE);
4891 		}
4892 	}
4893 	argc -= optind;
4894 	argv += optind;
4895 
4896 	ret = for_each_pool(argc, argv, B_FALSE,  NULL, get_history_one,
4897 	    &cbdata);
4898 
4899 	if (argc == 0 && cbdata.first == B_TRUE) {
4900 		(void) printf(gettext("no pools available\n"));
4901 		return (0);
4902 	}
4903 
4904 	return (ret);
4905 }
4906 
4907 static int
4908 get_callback(zpool_handle_t *zhp, void *data)
4909 {
4910 	zprop_get_cbdata_t *cbp = (zprop_get_cbdata_t *)data;
4911 	char value[MAXNAMELEN];
4912 	zprop_source_t srctype;
4913 	zprop_list_t *pl;
4914 
4915 	for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
4916 
4917 		/*
4918 		 * Skip the special fake placeholder. This will also skip
4919 		 * over the name property when 'all' is specified.
4920 		 */
4921 		if (pl->pl_prop == ZPOOL_PROP_NAME &&
4922 		    pl == cbp->cb_proplist)
4923 			continue;
4924 
4925 		if (pl->pl_prop == ZPROP_INVAL &&
4926 		    (zpool_prop_feature(pl->pl_user_prop) ||
4927 		    zpool_prop_unsupported(pl->pl_user_prop))) {
4928 			srctype = ZPROP_SRC_LOCAL;
4929 
4930 			if (zpool_prop_get_feature(zhp, pl->pl_user_prop,
4931 			    value, sizeof (value)) == 0) {
4932 				zprop_print_one_property(zpool_get_name(zhp),
4933 				    cbp, pl->pl_user_prop, value, srctype,
4934 				    NULL, NULL);
4935 			}
4936 		} else {
4937 			if (zpool_get_prop(zhp, pl->pl_prop, value,
4938 			    sizeof (value), &srctype) != 0)
4939 				continue;
4940 
4941 			zprop_print_one_property(zpool_get_name(zhp), cbp,
4942 			    zpool_prop_to_name(pl->pl_prop), value, srctype,
4943 			    NULL, NULL);
4944 		}
4945 	}
4946 	return (0);
4947 }
4948 
4949 int
4950 zpool_do_get(int argc, char **argv)
4951 {
4952 	zprop_get_cbdata_t cb = { 0 };
4953 	zprop_list_t fake_name = { 0 };
4954 	int ret;
4955 
4956 	if (argc < 2) {
4957 		(void) fprintf(stderr, gettext("missing property "
4958 		    "argument\n"));
4959 		usage(B_FALSE);
4960 	}
4961 
4962 	cb.cb_first = B_TRUE;
4963 	cb.cb_sources = ZPROP_SRC_ALL;
4964 	cb.cb_columns[0] = GET_COL_NAME;
4965 	cb.cb_columns[1] = GET_COL_PROPERTY;
4966 	cb.cb_columns[2] = GET_COL_VALUE;
4967 	cb.cb_columns[3] = GET_COL_SOURCE;
4968 	cb.cb_type = ZFS_TYPE_POOL;
4969 
4970 	if (zprop_get_list(g_zfs, argv[1], &cb.cb_proplist,
4971 	    ZFS_TYPE_POOL) != 0)
4972 		usage(B_FALSE);
4973 
4974 	if (cb.cb_proplist != NULL) {
4975 		fake_name.pl_prop = ZPOOL_PROP_NAME;
4976 		fake_name.pl_width = strlen(gettext("NAME"));
4977 		fake_name.pl_next = cb.cb_proplist;
4978 		cb.cb_proplist = &fake_name;
4979 	}
4980 
4981 	ret = for_each_pool(argc - 2, argv + 2, B_TRUE, &cb.cb_proplist,
4982 	    get_callback, &cb);
4983 
4984 	if (cb.cb_proplist == &fake_name)
4985 		zprop_free_list(fake_name.pl_next);
4986 	else
4987 		zprop_free_list(cb.cb_proplist);
4988 
4989 	return (ret);
4990 }
4991 
4992 typedef struct set_cbdata {
4993 	char *cb_propname;
4994 	char *cb_value;
4995 	boolean_t cb_any_successful;
4996 } set_cbdata_t;
4997 
4998 int
4999 set_callback(zpool_handle_t *zhp, void *data)
5000 {
5001 	int error;
5002 	set_cbdata_t *cb = (set_cbdata_t *)data;
5003 
5004 	error = zpool_set_prop(zhp, cb->cb_propname, cb->cb_value);
5005 
5006 	if (!error)
5007 		cb->cb_any_successful = B_TRUE;
5008 
5009 	return (error);
5010 }
5011 
5012 int
5013 zpool_do_set(int argc, char **argv)
5014 {
5015 	set_cbdata_t cb = { 0 };
5016 	int error;
5017 
5018 	if (argc > 1 && argv[1][0] == '-') {
5019 		(void) fprintf(stderr, gettext("invalid option '%c'\n"),
5020 		    argv[1][1]);
5021 		usage(B_FALSE);
5022 	}
5023 
5024 	if (argc < 2) {
5025 		(void) fprintf(stderr, gettext("missing property=value "
5026 		    "argument\n"));
5027 		usage(B_FALSE);
5028 	}
5029 
5030 	if (argc < 3) {
5031 		(void) fprintf(stderr, gettext("missing pool name\n"));
5032 		usage(B_FALSE);
5033 	}
5034 
5035 	if (argc > 3) {
5036 		(void) fprintf(stderr, gettext("too many pool names\n"));
5037 		usage(B_FALSE);
5038 	}
5039 
5040 	cb.cb_propname = argv[1];
5041 	cb.cb_value = strchr(cb.cb_propname, '=');
5042 	if (cb.cb_value == NULL) {
5043 		(void) fprintf(stderr, gettext("missing value in "
5044 		    "property=value argument\n"));
5045 		usage(B_FALSE);
5046 	}
5047 
5048 	*(cb.cb_value) = '\0';
5049 	cb.cb_value++;
5050 
5051 	error = for_each_pool(argc - 2, argv + 2, B_TRUE, NULL,
5052 	    set_callback, &cb);
5053 
5054 	return (error);
5055 }
5056 
5057 static int
5058 find_command_idx(char *command, int *idx)
5059 {
5060 	int i;
5061 
5062 	for (i = 0; i < NCOMMAND; i++) {
5063 		if (command_table[i].name == NULL)
5064 			continue;
5065 
5066 		if (strcmp(command, command_table[i].name) == 0) {
5067 			*idx = i;
5068 			return (0);
5069 		}
5070 	}
5071 	return (1);
5072 }
5073 
5074 int
5075 main(int argc, char **argv)
5076 {
5077 	int ret;
5078 	int i;
5079 	char *cmdname;
5080 
5081 	(void) setlocale(LC_ALL, "");
5082 	(void) textdomain(TEXT_DOMAIN);
5083 
5084 	if ((g_zfs = libzfs_init()) == NULL) {
5085 		(void) fprintf(stderr, gettext("internal error: failed to "
5086 		    "initialize ZFS library\n"));
5087 		return (1);
5088 	}
5089 
5090 	libzfs_print_on_error(g_zfs, B_TRUE);
5091 
5092 	opterr = 0;
5093 
5094 	/*
5095 	 * Make sure the user has specified some command.
5096 	 */
5097 	if (argc < 2) {
5098 		(void) fprintf(stderr, gettext("missing command\n"));
5099 		usage(B_FALSE);
5100 	}
5101 
5102 	cmdname = argv[1];
5103 
5104 	/*
5105 	 * Special case '-?'
5106 	 */
5107 	if (strcmp(cmdname, "-?") == 0)
5108 		usage(B_TRUE);
5109 
5110 	zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
5111 
5112 	/*
5113 	 * Run the appropriate command.
5114 	 */
5115 	if (find_command_idx(cmdname, &i) == 0) {
5116 		current_command = &command_table[i];
5117 		ret = command_table[i].func(argc - 1, argv + 1);
5118 	} else if (strchr(cmdname, '=')) {
5119 		verify(find_command_idx("set", &i) == 0);
5120 		current_command = &command_table[i];
5121 		ret = command_table[i].func(argc, argv);
5122 	} else if (strcmp(cmdname, "freeze") == 0 && argc == 3) {
5123 		/*
5124 		 * 'freeze' is a vile debugging abomination, so we treat
5125 		 * it as such.
5126 		 */
5127 		char buf[16384];
5128 		int fd = open(ZFS_DEV, O_RDWR);
5129 		(void) strcpy((void *)buf, argv[2]);
5130 		return (!!ioctl(fd, ZFS_IOC_POOL_FREEZE, buf));
5131 	} else {
5132 		(void) fprintf(stderr, gettext("unrecognized "
5133 		    "command '%s'\n"), cmdname);
5134 		usage(B_FALSE);
5135 	}
5136 
5137 	if (ret == 0 && log_history)
5138 		(void) zpool_log_history(g_zfs, history_str);
5139 
5140 	libzfs_fini(g_zfs);
5141 
5142 	/*
5143 	 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
5144 	 * for the purposes of running ::findleaks.
5145 	 */
5146 	if (getenv("ZFS_ABORT") != NULL) {
5147 		(void) printf("dumping core by request\n");
5148 		abort();
5149 	}
5150 
5151 	return (ret);
5152 }
5153