xref: /illumos-gate/usr/src/cmd/zpool/zpool_main.c (revision 621be8d08fd45483b5ca1cb8e2e88239f1502b4d)
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) 2011, 2015 by Delphix. All rights reserved.
26  * Copyright (c) 2012 by Frederik Wessels. All rights reserved.
27  * Copyright (c) 2013 by Prasad Joshi (sTec). All rights reserved.
28  * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
29  */
30 
31 #include <assert.h>
32 #include <ctype.h>
33 #include <dirent.h>
34 #include <errno.h>
35 #include <fcntl.h>
36 #include <libgen.h>
37 #include <libintl.h>
38 #include <libuutil.h>
39 #include <locale.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <strings.h>
44 #include <unistd.h>
45 #include <priv.h>
46 #include <pwd.h>
47 #include <zone.h>
48 #include <zfs_prop.h>
49 #include <sys/fs/zfs.h>
50 #include <sys/stat.h>
51 
52 #include <libzfs.h>
53 
54 #include "zpool_util.h"
55 #include "zfs_comutil.h"
56 #include "zfeature_common.h"
57 
58 #include "statcommon.h"
59 
60 static int zpool_do_create(int, char **);
61 static int zpool_do_destroy(int, char **);
62 
63 static int zpool_do_add(int, char **);
64 static int zpool_do_remove(int, char **);
65 
66 static int zpool_do_list(int, char **);
67 static int zpool_do_iostat(int, char **);
68 static int zpool_do_status(int, char **);
69 
70 static int zpool_do_online(int, char **);
71 static int zpool_do_offline(int, char **);
72 static int zpool_do_clear(int, char **);
73 static int zpool_do_reopen(int, char **);
74 
75 static int zpool_do_reguid(int, char **);
76 
77 static int zpool_do_attach(int, char **);
78 static int zpool_do_detach(int, char **);
79 static int zpool_do_replace(int, char **);
80 static int zpool_do_split(int, char **);
81 
82 static int zpool_do_scrub(int, char **);
83 
84 static int zpool_do_import(int, char **);
85 static int zpool_do_export(int, char **);
86 
87 static int zpool_do_upgrade(int, char **);
88 
89 static int zpool_do_history(int, char **);
90 
91 static int zpool_do_get(int, char **);
92 static int zpool_do_set(int, char **);
93 
94 /*
95  * These libumem hooks provide a reasonable set of defaults for the allocator's
96  * debugging facilities.
97  */
98 
99 #ifdef DEBUG
100 const char *
101 _umem_debug_init(void)
102 {
103 	return ("default,verbose"); /* $UMEM_DEBUG setting */
104 }
105 
106 const char *
107 _umem_logging_init(void)
108 {
109 	return ("fail,contents"); /* $UMEM_LOGGING setting */
110 }
111 #endif
112 
113 typedef enum {
114 	HELP_ADD,
115 	HELP_ATTACH,
116 	HELP_CLEAR,
117 	HELP_CREATE,
118 	HELP_DESTROY,
119 	HELP_DETACH,
120 	HELP_EXPORT,
121 	HELP_HISTORY,
122 	HELP_IMPORT,
123 	HELP_IOSTAT,
124 	HELP_LIST,
125 	HELP_OFFLINE,
126 	HELP_ONLINE,
127 	HELP_REPLACE,
128 	HELP_REMOVE,
129 	HELP_SCRUB,
130 	HELP_STATUS,
131 	HELP_UPGRADE,
132 	HELP_GET,
133 	HELP_SET,
134 	HELP_SPLIT,
135 	HELP_REGUID,
136 	HELP_REOPEN
137 } zpool_help_t;
138 
139 
140 typedef struct zpool_command {
141 	const char	*name;
142 	int		(*func)(int, char **);
143 	zpool_help_t	usage;
144 } zpool_command_t;
145 
146 /*
147  * Master command table.  Each ZFS command has a name, associated function, and
148  * usage message.  The usage messages need to be internationalized, so we have
149  * to have a function to return the usage message based on a command index.
150  *
151  * These commands are organized according to how they are displayed in the usage
152  * message.  An empty command (one with a NULL name) indicates an empty line in
153  * the generic usage message.
154  */
155 static zpool_command_t command_table[] = {
156 	{ "create",	zpool_do_create,	HELP_CREATE		},
157 	{ "destroy",	zpool_do_destroy,	HELP_DESTROY		},
158 	{ NULL },
159 	{ "add",	zpool_do_add,		HELP_ADD		},
160 	{ "remove",	zpool_do_remove,	HELP_REMOVE		},
161 	{ NULL },
162 	{ "list",	zpool_do_list,		HELP_LIST		},
163 	{ "iostat",	zpool_do_iostat,	HELP_IOSTAT		},
164 	{ "status",	zpool_do_status,	HELP_STATUS		},
165 	{ NULL },
166 	{ "online",	zpool_do_online,	HELP_ONLINE		},
167 	{ "offline",	zpool_do_offline,	HELP_OFFLINE		},
168 	{ "clear",	zpool_do_clear,		HELP_CLEAR		},
169 	{ "reopen",	zpool_do_reopen,	HELP_REOPEN		},
170 	{ NULL },
171 	{ "attach",	zpool_do_attach,	HELP_ATTACH		},
172 	{ "detach",	zpool_do_detach,	HELP_DETACH		},
173 	{ "replace",	zpool_do_replace,	HELP_REPLACE		},
174 	{ "split",	zpool_do_split,		HELP_SPLIT		},
175 	{ NULL },
176 	{ "scrub",	zpool_do_scrub,		HELP_SCRUB		},
177 	{ NULL },
178 	{ "import",	zpool_do_import,	HELP_IMPORT		},
179 	{ "export",	zpool_do_export,	HELP_EXPORT		},
180 	{ "upgrade",	zpool_do_upgrade,	HELP_UPGRADE		},
181 	{ "reguid",	zpool_do_reguid,	HELP_REGUID		},
182 	{ NULL },
183 	{ "history",	zpool_do_history,	HELP_HISTORY		},
184 	{ "get",	zpool_do_get,		HELP_GET		},
185 	{ "set",	zpool_do_set,		HELP_SET		},
186 };
187 
188 #define	NCOMMAND	(sizeof (command_table) / sizeof (command_table[0]))
189 
190 static zpool_command_t *current_command;
191 static char history_str[HIS_MAX_RECORD_LEN];
192 static boolean_t log_history = B_TRUE;
193 static uint_t timestamp_fmt = NODATE;
194 
195 static const char *
196 get_usage(zpool_help_t idx)
197 {
198 	switch (idx) {
199 	case HELP_ADD:
200 		return (gettext("\tadd [-fn] <pool> <vdev> ...\n"));
201 	case HELP_ATTACH:
202 		return (gettext("\tattach [-f] <pool> <device> "
203 		    "<new-device>\n"));
204 	case HELP_CLEAR:
205 		return (gettext("\tclear [-nF] <pool> [device]\n"));
206 	case HELP_CREATE:
207 		return (gettext("\tcreate [-fnd] [-o property=value] ... \n"
208 		    "\t    [-O file-system-property=value] ... \n"
209 		    "\t    [-m mountpoint] [-R root] <pool> <vdev> ...\n"));
210 	case HELP_DESTROY:
211 		return (gettext("\tdestroy [-f] <pool>\n"));
212 	case HELP_DETACH:
213 		return (gettext("\tdetach <pool> <device>\n"));
214 	case HELP_EXPORT:
215 		return (gettext("\texport [-f] <pool> ...\n"));
216 	case HELP_HISTORY:
217 		return (gettext("\thistory [-il] [<pool>] ...\n"));
218 	case HELP_IMPORT:
219 		return (gettext("\timport [-d dir] [-D]\n"
220 		    "\timport [-d dir | -c cachefile] [-F [-n]] <pool | id>\n"
221 		    "\timport [-o mntopts] [-o property=value] ... \n"
222 		    "\t    [-d dir | -c cachefile] [-D] [-f] [-m] [-N] "
223 		    "[-R root] [-F [-n]] -a\n"
224 		    "\timport [-o mntopts] [-o property=value] ... \n"
225 		    "\t    [-d dir | -c cachefile] [-D] [-f] [-m] [-N] "
226 		    "[-R root] [-F [-n]]\n"
227 		    "\t    <pool | id> [newpool]\n"));
228 	case HELP_IOSTAT:
229 		return (gettext("\tiostat [-v] [-T d|u] [pool] ... [interval "
230 		    "[count]]\n"));
231 	case HELP_LIST:
232 		return (gettext("\tlist [-Hp] [-o property[,...]] "
233 		    "[-T d|u] [pool] ... [interval [count]]\n"));
234 	case HELP_OFFLINE:
235 		return (gettext("\toffline [-t] <pool> <device> ...\n"));
236 	case HELP_ONLINE:
237 		return (gettext("\tonline <pool> <device> ...\n"));
238 	case HELP_REPLACE:
239 		return (gettext("\treplace [-f] <pool> <device> "
240 		    "[new-device]\n"));
241 	case HELP_REMOVE:
242 		return (gettext("\tremove <pool> <device> ...\n"));
243 	case HELP_REOPEN:
244 		return (gettext("\treopen <pool>\n"));
245 	case HELP_SCRUB:
246 		return (gettext("\tscrub [-s] <pool> ...\n"));
247 	case HELP_STATUS:
248 		return (gettext("\tstatus [-vx] [-T d|u] [pool] ... [interval "
249 		    "[count]]\n"));
250 	case HELP_UPGRADE:
251 		return (gettext("\tupgrade\n"
252 		    "\tupgrade -v\n"
253 		    "\tupgrade [-V version] <-a | pool ...>\n"));
254 	case HELP_GET:
255 		return (gettext("\tget [-Hp] [-o \"all\" | field[,...]] "
256 		    "<\"all\" | property[,...]> <pool> ...\n"));
257 	case HELP_SET:
258 		return (gettext("\tset <property=value> <pool> \n"));
259 	case HELP_SPLIT:
260 		return (gettext("\tsplit [-n] [-R altroot] [-o mntopts]\n"
261 		    "\t    [-o property=value] <pool> <newpool> "
262 		    "[<device> ...]\n"));
263 	case HELP_REGUID:
264 		return (gettext("\treguid <pool>\n"));
265 	}
266 
267 	abort();
268 	/* NOTREACHED */
269 }
270 
271 
272 /*
273  * Callback routine that will print out a pool property value.
274  */
275 static int
276 print_prop_cb(int prop, void *cb)
277 {
278 	FILE *fp = cb;
279 
280 	(void) fprintf(fp, "\t%-15s  ", zpool_prop_to_name(prop));
281 
282 	if (zpool_prop_readonly(prop))
283 		(void) fprintf(fp, "  NO   ");
284 	else
285 		(void) fprintf(fp, " YES   ");
286 
287 	if (zpool_prop_values(prop) == NULL)
288 		(void) fprintf(fp, "-\n");
289 	else
290 		(void) fprintf(fp, "%s\n", zpool_prop_values(prop));
291 
292 	return (ZPROP_CONT);
293 }
294 
295 /*
296  * Display usage message.  If we're inside a command, display only the usage for
297  * that command.  Otherwise, iterate over the entire command table and display
298  * a complete usage message.
299  */
300 void
301 usage(boolean_t requested)
302 {
303 	FILE *fp = requested ? stdout : stderr;
304 
305 	if (current_command == NULL) {
306 		int i;
307 
308 		(void) fprintf(fp, gettext("usage: zpool command args ...\n"));
309 		(void) fprintf(fp,
310 		    gettext("where 'command' is one of the following:\n\n"));
311 
312 		for (i = 0; i < NCOMMAND; i++) {
313 			if (command_table[i].name == NULL)
314 				(void) fprintf(fp, "\n");
315 			else
316 				(void) fprintf(fp, "%s",
317 				    get_usage(command_table[i].usage));
318 		}
319 	} else {
320 		(void) fprintf(fp, gettext("usage:\n"));
321 		(void) fprintf(fp, "%s", get_usage(current_command->usage));
322 	}
323 
324 	if (current_command != NULL &&
325 	    ((strcmp(current_command->name, "set") == 0) ||
326 	    (strcmp(current_command->name, "get") == 0) ||
327 	    (strcmp(current_command->name, "list") == 0))) {
328 
329 		(void) fprintf(fp,
330 		    gettext("\nthe following properties are supported:\n"));
331 
332 		(void) fprintf(fp, "\n\t%-15s  %s   %s\n\n",
333 		    "PROPERTY", "EDIT", "VALUES");
334 
335 		/* Iterate over all properties */
336 		(void) zprop_iter(print_prop_cb, fp, B_FALSE, B_TRUE,
337 		    ZFS_TYPE_POOL);
338 
339 		(void) fprintf(fp, "\t%-15s   ", "feature@...");
340 		(void) fprintf(fp, "YES   disabled | enabled | active\n");
341 
342 		(void) fprintf(fp, gettext("\nThe feature@ properties must be "
343 		    "appended with a feature name.\nSee zpool-features(5).\n"));
344 	}
345 
346 	/*
347 	 * See comments at end of main().
348 	 */
349 	if (getenv("ZFS_ABORT") != NULL) {
350 		(void) printf("dumping core by request\n");
351 		abort();
352 	}
353 
354 	exit(requested ? 0 : 2);
355 }
356 
357 void
358 print_vdev_tree(zpool_handle_t *zhp, const char *name, nvlist_t *nv, int indent,
359     boolean_t print_logs)
360 {
361 	nvlist_t **child;
362 	uint_t c, children;
363 	char *vname;
364 
365 	if (name != NULL)
366 		(void) printf("\t%*s%s\n", indent, "", name);
367 
368 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
369 	    &child, &children) != 0)
370 		return;
371 
372 	for (c = 0; c < children; c++) {
373 		uint64_t is_log = B_FALSE;
374 
375 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
376 		    &is_log);
377 		if ((is_log && !print_logs) || (!is_log && print_logs))
378 			continue;
379 
380 		vname = zpool_vdev_name(g_zfs, zhp, child[c], B_FALSE);
381 		print_vdev_tree(zhp, vname, child[c], indent + 2,
382 		    B_FALSE);
383 		free(vname);
384 	}
385 }
386 
387 static boolean_t
388 prop_list_contains_feature(nvlist_t *proplist)
389 {
390 	nvpair_t *nvp;
391 	for (nvp = nvlist_next_nvpair(proplist, NULL); NULL != nvp;
392 	    nvp = nvlist_next_nvpair(proplist, nvp)) {
393 		if (zpool_prop_feature(nvpair_name(nvp)))
394 			return (B_TRUE);
395 	}
396 	return (B_FALSE);
397 }
398 
399 /*
400  * Add a property pair (name, string-value) into a property nvlist.
401  */
402 static int
403 add_prop_list(const char *propname, char *propval, nvlist_t **props,
404     boolean_t poolprop)
405 {
406 	zpool_prop_t prop = ZPROP_INVAL;
407 	zfs_prop_t fprop;
408 	nvlist_t *proplist;
409 	const char *normnm;
410 	char *strval;
411 
412 	if (*props == NULL &&
413 	    nvlist_alloc(props, NV_UNIQUE_NAME, 0) != 0) {
414 		(void) fprintf(stderr,
415 		    gettext("internal error: out of memory\n"));
416 		return (1);
417 	}
418 
419 	proplist = *props;
420 
421 	if (poolprop) {
422 		const char *vname = zpool_prop_to_name(ZPOOL_PROP_VERSION);
423 
424 		if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL &&
425 		    !zpool_prop_feature(propname)) {
426 			(void) fprintf(stderr, gettext("property '%s' is "
427 			    "not a valid pool property\n"), propname);
428 			return (2);
429 		}
430 
431 		/*
432 		 * feature@ properties and version should not be specified
433 		 * at the same time.
434 		 */
435 		if ((prop == ZPROP_INVAL && zpool_prop_feature(propname) &&
436 		    nvlist_exists(proplist, vname)) ||
437 		    (prop == ZPOOL_PROP_VERSION &&
438 		    prop_list_contains_feature(proplist))) {
439 			(void) fprintf(stderr, gettext("'feature@' and "
440 			    "'version' properties cannot be specified "
441 			    "together\n"));
442 			return (2);
443 		}
444 
445 
446 		if (zpool_prop_feature(propname))
447 			normnm = propname;
448 		else
449 			normnm = zpool_prop_to_name(prop);
450 	} else {
451 		if ((fprop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
452 			normnm = zfs_prop_to_name(fprop);
453 		} else {
454 			normnm = propname;
455 		}
456 	}
457 
458 	if (nvlist_lookup_string(proplist, normnm, &strval) == 0 &&
459 	    prop != ZPOOL_PROP_CACHEFILE) {
460 		(void) fprintf(stderr, gettext("property '%s' "
461 		    "specified multiple times\n"), propname);
462 		return (2);
463 	}
464 
465 	if (nvlist_add_string(proplist, normnm, propval) != 0) {
466 		(void) fprintf(stderr, gettext("internal "
467 		    "error: out of memory\n"));
468 		return (1);
469 	}
470 
471 	return (0);
472 }
473 
474 /*
475  * zpool add [-fn] <pool> <vdev> ...
476  *
477  *	-f	Force addition of devices, even if they appear in use
478  *	-n	Do not add the devices, but display the resulting layout if
479  *		they were to be added.
480  *
481  * Adds the given vdevs to 'pool'.  As with create, the bulk of this work is
482  * handled by get_vdev_spec(), which constructs the nvlist needed to pass to
483  * libzfs.
484  */
485 int
486 zpool_do_add(int argc, char **argv)
487 {
488 	boolean_t force = B_FALSE;
489 	boolean_t dryrun = B_FALSE;
490 	int c;
491 	nvlist_t *nvroot;
492 	char *poolname;
493 	int ret;
494 	zpool_handle_t *zhp;
495 	nvlist_t *config;
496 
497 	/* check options */
498 	while ((c = getopt(argc, argv, "fn")) != -1) {
499 		switch (c) {
500 		case 'f':
501 			force = B_TRUE;
502 			break;
503 		case 'n':
504 			dryrun = B_TRUE;
505 			break;
506 		case '?':
507 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
508 			    optopt);
509 			usage(B_FALSE);
510 		}
511 	}
512 
513 	argc -= optind;
514 	argv += optind;
515 
516 	/* get pool name and check number of arguments */
517 	if (argc < 1) {
518 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
519 		usage(B_FALSE);
520 	}
521 	if (argc < 2) {
522 		(void) fprintf(stderr, gettext("missing vdev specification\n"));
523 		usage(B_FALSE);
524 	}
525 
526 	poolname = argv[0];
527 
528 	argc--;
529 	argv++;
530 
531 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
532 		return (1);
533 
534 	if ((config = zpool_get_config(zhp, NULL)) == NULL) {
535 		(void) fprintf(stderr, gettext("pool '%s' is unavailable\n"),
536 		    poolname);
537 		zpool_close(zhp);
538 		return (1);
539 	}
540 
541 	/* pass off to get_vdev_spec for processing */
542 	nvroot = make_root_vdev(zhp, force, !force, B_FALSE, dryrun,
543 	    argc, argv);
544 	if (nvroot == NULL) {
545 		zpool_close(zhp);
546 		return (1);
547 	}
548 
549 	if (dryrun) {
550 		nvlist_t *poolnvroot;
551 
552 		verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
553 		    &poolnvroot) == 0);
554 
555 		(void) printf(gettext("would update '%s' to the following "
556 		    "configuration:\n"), zpool_get_name(zhp));
557 
558 		/* print original main pool and new tree */
559 		print_vdev_tree(zhp, poolname, poolnvroot, 0, B_FALSE);
560 		print_vdev_tree(zhp, NULL, nvroot, 0, B_FALSE);
561 
562 		/* Do the same for the logs */
563 		if (num_logs(poolnvroot) > 0) {
564 			print_vdev_tree(zhp, "logs", poolnvroot, 0, B_TRUE);
565 			print_vdev_tree(zhp, NULL, nvroot, 0, B_TRUE);
566 		} else if (num_logs(nvroot) > 0) {
567 			print_vdev_tree(zhp, "logs", nvroot, 0, B_TRUE);
568 		}
569 
570 		ret = 0;
571 	} else {
572 		ret = (zpool_add(zhp, nvroot) != 0);
573 	}
574 
575 	nvlist_free(nvroot);
576 	zpool_close(zhp);
577 
578 	return (ret);
579 }
580 
581 /*
582  * zpool remove  <pool> <vdev> ...
583  *
584  * Removes the given vdev from the pool.  Currently, this supports removing
585  * spares, cache, and log devices from the pool.
586  */
587 int
588 zpool_do_remove(int argc, char **argv)
589 {
590 	char *poolname;
591 	int i, ret = 0;
592 	zpool_handle_t *zhp;
593 
594 	argc--;
595 	argv++;
596 
597 	/* get pool name and check number of arguments */
598 	if (argc < 1) {
599 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
600 		usage(B_FALSE);
601 	}
602 	if (argc < 2) {
603 		(void) fprintf(stderr, gettext("missing device\n"));
604 		usage(B_FALSE);
605 	}
606 
607 	poolname = argv[0];
608 
609 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
610 		return (1);
611 
612 	for (i = 1; i < argc; i++) {
613 		if (zpool_vdev_remove(zhp, argv[i]) != 0)
614 			ret = 1;
615 	}
616 
617 	return (ret);
618 }
619 
620 /*
621  * zpool create [-fnd] [-o property=value] ...
622  *		[-O file-system-property=value] ...
623  *		[-R root] [-m mountpoint] <pool> <dev> ...
624  *
625  *	-f	Force creation, even if devices appear in use
626  *	-n	Do not create the pool, but display the resulting layout if it
627  *		were to be created.
628  *      -R	Create a pool under an alternate root
629  *      -m	Set default mountpoint for the root dataset.  By default it's
630  *		'/<pool>'
631  *	-o	Set property=value.
632  *	-d	Don't automatically enable all supported pool features
633  *		(individual features can be enabled with -o).
634  *	-O	Set fsproperty=value in the pool's root file system
635  *
636  * Creates the named pool according to the given vdev specification.  The
637  * bulk of the vdev processing is done in get_vdev_spec() in zpool_vdev.c.  Once
638  * we get the nvlist back from get_vdev_spec(), we either print out the contents
639  * (if '-n' was specified), or pass it to libzfs to do the creation.
640  */
641 int
642 zpool_do_create(int argc, char **argv)
643 {
644 	boolean_t force = B_FALSE;
645 	boolean_t dryrun = B_FALSE;
646 	boolean_t enable_all_pool_feat = B_TRUE;
647 	int c;
648 	nvlist_t *nvroot = NULL;
649 	char *poolname;
650 	int ret = 1;
651 	char *altroot = NULL;
652 	char *mountpoint = NULL;
653 	nvlist_t *fsprops = NULL;
654 	nvlist_t *props = NULL;
655 	char *propval;
656 
657 	/* check options */
658 	while ((c = getopt(argc, argv, ":fndR:m:o:O:")) != -1) {
659 		switch (c) {
660 		case 'f':
661 			force = B_TRUE;
662 			break;
663 		case 'n':
664 			dryrun = B_TRUE;
665 			break;
666 		case 'd':
667 			enable_all_pool_feat = B_FALSE;
668 			break;
669 		case 'R':
670 			altroot = optarg;
671 			if (add_prop_list(zpool_prop_to_name(
672 			    ZPOOL_PROP_ALTROOT), optarg, &props, B_TRUE))
673 				goto errout;
674 			if (nvlist_lookup_string(props,
675 			    zpool_prop_to_name(ZPOOL_PROP_CACHEFILE),
676 			    &propval) == 0)
677 				break;
678 			if (add_prop_list(zpool_prop_to_name(
679 			    ZPOOL_PROP_CACHEFILE), "none", &props, B_TRUE))
680 				goto errout;
681 			break;
682 		case 'm':
683 			/* Equivalent to -O mountpoint=optarg */
684 			mountpoint = optarg;
685 			break;
686 		case 'o':
687 			if ((propval = strchr(optarg, '=')) == NULL) {
688 				(void) fprintf(stderr, gettext("missing "
689 				    "'=' for -o option\n"));
690 				goto errout;
691 			}
692 			*propval = '\0';
693 			propval++;
694 
695 			if (add_prop_list(optarg, propval, &props, B_TRUE))
696 				goto errout;
697 
698 			/*
699 			 * If the user is creating a pool that doesn't support
700 			 * feature flags, don't enable any features.
701 			 */
702 			if (zpool_name_to_prop(optarg) == ZPOOL_PROP_VERSION) {
703 				char *end;
704 				u_longlong_t ver;
705 
706 				ver = strtoull(propval, &end, 10);
707 				if (*end == '\0' &&
708 				    ver < SPA_VERSION_FEATURES) {
709 					enable_all_pool_feat = B_FALSE;
710 				}
711 			}
712 			if (zpool_name_to_prop(optarg) == ZPOOL_PROP_ALTROOT)
713 				altroot = propval;
714 			break;
715 		case 'O':
716 			if ((propval = strchr(optarg, '=')) == NULL) {
717 				(void) fprintf(stderr, gettext("missing "
718 				    "'=' for -O option\n"));
719 				goto errout;
720 			}
721 			*propval = '\0';
722 			propval++;
723 
724 			/*
725 			 * Mountpoints are checked and then added later.
726 			 * Uniquely among properties, they can be specified
727 			 * more than once, to avoid conflict with -m.
728 			 */
729 			if (0 == strcmp(optarg,
730 			    zfs_prop_to_name(ZFS_PROP_MOUNTPOINT))) {
731 				mountpoint = propval;
732 			} else if (add_prop_list(optarg, propval, &fsprops,
733 			    B_FALSE)) {
734 				goto errout;
735 			}
736 			break;
737 		case ':':
738 			(void) fprintf(stderr, gettext("missing argument for "
739 			    "'%c' option\n"), optopt);
740 			goto badusage;
741 		case '?':
742 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
743 			    optopt);
744 			goto badusage;
745 		}
746 	}
747 
748 	argc -= optind;
749 	argv += optind;
750 
751 	/* get pool name and check number of arguments */
752 	if (argc < 1) {
753 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
754 		goto badusage;
755 	}
756 	if (argc < 2) {
757 		(void) fprintf(stderr, gettext("missing vdev specification\n"));
758 		goto badusage;
759 	}
760 
761 	poolname = argv[0];
762 
763 	/*
764 	 * As a special case, check for use of '/' in the name, and direct the
765 	 * user to use 'zfs create' instead.
766 	 */
767 	if (strchr(poolname, '/') != NULL) {
768 		(void) fprintf(stderr, gettext("cannot create '%s': invalid "
769 		    "character '/' in pool name\n"), poolname);
770 		(void) fprintf(stderr, gettext("use 'zfs create' to "
771 		    "create a dataset\n"));
772 		goto errout;
773 	}
774 
775 	/* pass off to get_vdev_spec for bulk processing */
776 	nvroot = make_root_vdev(NULL, force, !force, B_FALSE, dryrun,
777 	    argc - 1, argv + 1);
778 	if (nvroot == NULL)
779 		goto errout;
780 
781 	/* make_root_vdev() allows 0 toplevel children if there are spares */
782 	if (!zfs_allocatable_devs(nvroot)) {
783 		(void) fprintf(stderr, gettext("invalid vdev "
784 		    "specification: at least one toplevel vdev must be "
785 		    "specified\n"));
786 		goto errout;
787 	}
788 
789 	if (altroot != NULL && altroot[0] != '/') {
790 		(void) fprintf(stderr, gettext("invalid alternate root '%s': "
791 		    "must be an absolute path\n"), altroot);
792 		goto errout;
793 	}
794 
795 	/*
796 	 * Check the validity of the mountpoint and direct the user to use the
797 	 * '-m' mountpoint option if it looks like its in use.
798 	 */
799 	if (mountpoint == NULL ||
800 	    (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) != 0 &&
801 	    strcmp(mountpoint, ZFS_MOUNTPOINT_NONE) != 0)) {
802 		char buf[MAXPATHLEN];
803 		DIR *dirp;
804 
805 		if (mountpoint && mountpoint[0] != '/') {
806 			(void) fprintf(stderr, gettext("invalid mountpoint "
807 			    "'%s': must be an absolute path, 'legacy', or "
808 			    "'none'\n"), mountpoint);
809 			goto errout;
810 		}
811 
812 		if (mountpoint == NULL) {
813 			if (altroot != NULL)
814 				(void) snprintf(buf, sizeof (buf), "%s/%s",
815 				    altroot, poolname);
816 			else
817 				(void) snprintf(buf, sizeof (buf), "/%s",
818 				    poolname);
819 		} else {
820 			if (altroot != NULL)
821 				(void) snprintf(buf, sizeof (buf), "%s%s",
822 				    altroot, mountpoint);
823 			else
824 				(void) snprintf(buf, sizeof (buf), "%s",
825 				    mountpoint);
826 		}
827 
828 		if ((dirp = opendir(buf)) == NULL && errno != ENOENT) {
829 			(void) fprintf(stderr, gettext("mountpoint '%s' : "
830 			    "%s\n"), buf, strerror(errno));
831 			(void) fprintf(stderr, gettext("use '-m' "
832 			    "option to provide a different default\n"));
833 			goto errout;
834 		} else if (dirp) {
835 			int count = 0;
836 
837 			while (count < 3 && readdir(dirp) != NULL)
838 				count++;
839 			(void) closedir(dirp);
840 
841 			if (count > 2) {
842 				(void) fprintf(stderr, gettext("mountpoint "
843 				    "'%s' exists and is not empty\n"), buf);
844 				(void) fprintf(stderr, gettext("use '-m' "
845 				    "option to provide a "
846 				    "different default\n"));
847 				goto errout;
848 			}
849 		}
850 	}
851 
852 	/*
853 	 * Now that the mountpoint's validity has been checked, ensure that
854 	 * the property is set appropriately prior to creating the pool.
855 	 */
856 	if (mountpoint != NULL) {
857 		ret = add_prop_list(zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
858 		    mountpoint, &fsprops, B_FALSE);
859 		if (ret != 0)
860 			goto errout;
861 	}
862 
863 	ret = 1;
864 	if (dryrun) {
865 		/*
866 		 * For a dry run invocation, print out a basic message and run
867 		 * through all the vdevs in the list and print out in an
868 		 * appropriate hierarchy.
869 		 */
870 		(void) printf(gettext("would create '%s' with the "
871 		    "following layout:\n\n"), poolname);
872 
873 		print_vdev_tree(NULL, poolname, nvroot, 0, B_FALSE);
874 		if (num_logs(nvroot) > 0)
875 			print_vdev_tree(NULL, "logs", nvroot, 0, B_TRUE);
876 
877 		ret = 0;
878 	} else {
879 		/*
880 		 * Hand off to libzfs.
881 		 */
882 		if (enable_all_pool_feat) {
883 			spa_feature_t i;
884 			for (i = 0; i < SPA_FEATURES; i++) {
885 				char propname[MAXPATHLEN];
886 				zfeature_info_t *feat = &spa_feature_table[i];
887 
888 				(void) snprintf(propname, sizeof (propname),
889 				    "feature@%s", feat->fi_uname);
890 
891 				/*
892 				 * Skip feature if user specified it manually
893 				 * on the command line.
894 				 */
895 				if (nvlist_exists(props, propname))
896 					continue;
897 
898 				ret = add_prop_list(propname,
899 				    ZFS_FEATURE_ENABLED, &props, B_TRUE);
900 				if (ret != 0)
901 					goto errout;
902 			}
903 		}
904 
905 		ret = 1;
906 		if (zpool_create(g_zfs, poolname,
907 		    nvroot, props, fsprops) == 0) {
908 			zfs_handle_t *pool = zfs_open(g_zfs, poolname,
909 			    ZFS_TYPE_FILESYSTEM);
910 			if (pool != NULL) {
911 				if (zfs_mount(pool, NULL, 0) == 0)
912 					ret = zfs_shareall(pool);
913 				zfs_close(pool);
914 			}
915 		} else if (libzfs_errno(g_zfs) == EZFS_INVALIDNAME) {
916 			(void) fprintf(stderr, gettext("pool name may have "
917 			    "been omitted\n"));
918 		}
919 	}
920 
921 errout:
922 	nvlist_free(nvroot);
923 	nvlist_free(fsprops);
924 	nvlist_free(props);
925 	return (ret);
926 badusage:
927 	nvlist_free(fsprops);
928 	nvlist_free(props);
929 	usage(B_FALSE);
930 	return (2);
931 }
932 
933 /*
934  * zpool destroy <pool>
935  *
936  * 	-f	Forcefully unmount any datasets
937  *
938  * Destroy the given pool.  Automatically unmounts any datasets in the pool.
939  */
940 int
941 zpool_do_destroy(int argc, char **argv)
942 {
943 	boolean_t force = B_FALSE;
944 	int c;
945 	char *pool;
946 	zpool_handle_t *zhp;
947 	int ret;
948 
949 	/* check options */
950 	while ((c = getopt(argc, argv, "f")) != -1) {
951 		switch (c) {
952 		case 'f':
953 			force = B_TRUE;
954 			break;
955 		case '?':
956 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
957 			    optopt);
958 			usage(B_FALSE);
959 		}
960 	}
961 
962 	argc -= optind;
963 	argv += optind;
964 
965 	/* check arguments */
966 	if (argc < 1) {
967 		(void) fprintf(stderr, gettext("missing pool argument\n"));
968 		usage(B_FALSE);
969 	}
970 	if (argc > 1) {
971 		(void) fprintf(stderr, gettext("too many arguments\n"));
972 		usage(B_FALSE);
973 	}
974 
975 	pool = argv[0];
976 
977 	if ((zhp = zpool_open_canfail(g_zfs, pool)) == NULL) {
978 		/*
979 		 * As a special case, check for use of '/' in the name, and
980 		 * direct the user to use 'zfs destroy' instead.
981 		 */
982 		if (strchr(pool, '/') != NULL)
983 			(void) fprintf(stderr, gettext("use 'zfs destroy' to "
984 			    "destroy a dataset\n"));
985 		return (1);
986 	}
987 
988 	if (zpool_disable_datasets(zhp, force) != 0) {
989 		(void) fprintf(stderr, gettext("could not destroy '%s': "
990 		    "could not unmount datasets\n"), zpool_get_name(zhp));
991 		return (1);
992 	}
993 
994 	/* The history must be logged as part of the export */
995 	log_history = B_FALSE;
996 
997 	ret = (zpool_destroy(zhp, history_str) != 0);
998 
999 	zpool_close(zhp);
1000 
1001 	return (ret);
1002 }
1003 
1004 /*
1005  * zpool export [-f] <pool> ...
1006  *
1007  *	-f	Forcefully unmount datasets
1008  *
1009  * Export the given pools.  By default, the command will attempt to cleanly
1010  * unmount any active datasets within the pool.  If the '-f' flag is specified,
1011  * then the datasets will be forcefully unmounted.
1012  */
1013 int
1014 zpool_do_export(int argc, char **argv)
1015 {
1016 	boolean_t force = B_FALSE;
1017 	boolean_t hardforce = B_FALSE;
1018 	int c;
1019 	zpool_handle_t *zhp;
1020 	int ret;
1021 	int i;
1022 
1023 	/* check options */
1024 	while ((c = getopt(argc, argv, "fF")) != -1) {
1025 		switch (c) {
1026 		case 'f':
1027 			force = B_TRUE;
1028 			break;
1029 		case 'F':
1030 			hardforce = B_TRUE;
1031 			break;
1032 		case '?':
1033 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
1034 			    optopt);
1035 			usage(B_FALSE);
1036 		}
1037 	}
1038 
1039 	argc -= optind;
1040 	argv += optind;
1041 
1042 	/* check arguments */
1043 	if (argc < 1) {
1044 		(void) fprintf(stderr, gettext("missing pool argument\n"));
1045 		usage(B_FALSE);
1046 	}
1047 
1048 	ret = 0;
1049 	for (i = 0; i < argc; i++) {
1050 		if ((zhp = zpool_open_canfail(g_zfs, argv[i])) == NULL) {
1051 			ret = 1;
1052 			continue;
1053 		}
1054 
1055 		if (zpool_disable_datasets(zhp, force) != 0) {
1056 			ret = 1;
1057 			zpool_close(zhp);
1058 			continue;
1059 		}
1060 
1061 		/* The history must be logged as part of the export */
1062 		log_history = B_FALSE;
1063 
1064 		if (hardforce) {
1065 			if (zpool_export_force(zhp, history_str) != 0)
1066 				ret = 1;
1067 		} else if (zpool_export(zhp, force, history_str) != 0) {
1068 			ret = 1;
1069 		}
1070 
1071 		zpool_close(zhp);
1072 	}
1073 
1074 	return (ret);
1075 }
1076 
1077 /*
1078  * Given a vdev configuration, determine the maximum width needed for the device
1079  * name column.
1080  */
1081 static int
1082 max_width(zpool_handle_t *zhp, nvlist_t *nv, int depth, int max)
1083 {
1084 	char *name = zpool_vdev_name(g_zfs, zhp, nv, B_TRUE);
1085 	nvlist_t **child;
1086 	uint_t c, children;
1087 	int ret;
1088 
1089 	if (strlen(name) + depth > max)
1090 		max = strlen(name) + depth;
1091 
1092 	free(name);
1093 
1094 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
1095 	    &child, &children) == 0) {
1096 		for (c = 0; c < children; c++)
1097 			if ((ret = max_width(zhp, child[c], depth + 2,
1098 			    max)) > max)
1099 				max = ret;
1100 	}
1101 
1102 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
1103 	    &child, &children) == 0) {
1104 		for (c = 0; c < children; c++)
1105 			if ((ret = max_width(zhp, child[c], depth + 2,
1106 			    max)) > max)
1107 				max = ret;
1108 	}
1109 
1110 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1111 	    &child, &children) == 0) {
1112 		for (c = 0; c < children; c++)
1113 			if ((ret = max_width(zhp, child[c], depth + 2,
1114 			    max)) > max)
1115 				max = ret;
1116 	}
1117 
1118 
1119 	return (max);
1120 }
1121 
1122 typedef struct spare_cbdata {
1123 	uint64_t	cb_guid;
1124 	zpool_handle_t	*cb_zhp;
1125 } spare_cbdata_t;
1126 
1127 static boolean_t
1128 find_vdev(nvlist_t *nv, uint64_t search)
1129 {
1130 	uint64_t guid;
1131 	nvlist_t **child;
1132 	uint_t c, children;
1133 
1134 	if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) == 0 &&
1135 	    search == guid)
1136 		return (B_TRUE);
1137 
1138 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1139 	    &child, &children) == 0) {
1140 		for (c = 0; c < children; c++)
1141 			if (find_vdev(child[c], search))
1142 				return (B_TRUE);
1143 	}
1144 
1145 	return (B_FALSE);
1146 }
1147 
1148 static int
1149 find_spare(zpool_handle_t *zhp, void *data)
1150 {
1151 	spare_cbdata_t *cbp = data;
1152 	nvlist_t *config, *nvroot;
1153 
1154 	config = zpool_get_config(zhp, NULL);
1155 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
1156 	    &nvroot) == 0);
1157 
1158 	if (find_vdev(nvroot, cbp->cb_guid)) {
1159 		cbp->cb_zhp = zhp;
1160 		return (1);
1161 	}
1162 
1163 	zpool_close(zhp);
1164 	return (0);
1165 }
1166 
1167 /*
1168  * Print out configuration state as requested by status_callback.
1169  */
1170 void
1171 print_status_config(zpool_handle_t *zhp, const char *name, nvlist_t *nv,
1172     int namewidth, int depth, boolean_t isspare)
1173 {
1174 	nvlist_t **child;
1175 	uint_t c, children;
1176 	pool_scan_stat_t *ps = NULL;
1177 	vdev_stat_t *vs;
1178 	char rbuf[6], wbuf[6], cbuf[6];
1179 	char *vname;
1180 	uint64_t notpresent;
1181 	spare_cbdata_t cb;
1182 	char *state;
1183 
1184 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1185 	    &child, &children) != 0)
1186 		children = 0;
1187 
1188 	verify(nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
1189 	    (uint64_t **)&vs, &c) == 0);
1190 
1191 	state = zpool_state_to_name(vs->vs_state, vs->vs_aux);
1192 	if (isspare) {
1193 		/*
1194 		 * For hot spares, we use the terms 'INUSE' and 'AVAILABLE' for
1195 		 * online drives.
1196 		 */
1197 		if (vs->vs_aux == VDEV_AUX_SPARED)
1198 			state = "INUSE";
1199 		else if (vs->vs_state == VDEV_STATE_HEALTHY)
1200 			state = "AVAIL";
1201 	}
1202 
1203 	(void) printf("\t%*s%-*s  %-8s", depth, "", namewidth - depth,
1204 	    name, state);
1205 
1206 	if (!isspare) {
1207 		zfs_nicenum(vs->vs_read_errors, rbuf, sizeof (rbuf));
1208 		zfs_nicenum(vs->vs_write_errors, wbuf, sizeof (wbuf));
1209 		zfs_nicenum(vs->vs_checksum_errors, cbuf, sizeof (cbuf));
1210 		(void) printf(" %5s %5s %5s", rbuf, wbuf, cbuf);
1211 	}
1212 
1213 	if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT,
1214 	    &notpresent) == 0) {
1215 		char *path;
1216 		verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0);
1217 		(void) printf("  was %s", path);
1218 	} else if (vs->vs_aux != 0) {
1219 		(void) printf("  ");
1220 
1221 		switch (vs->vs_aux) {
1222 		case VDEV_AUX_OPEN_FAILED:
1223 			(void) printf(gettext("cannot open"));
1224 			break;
1225 
1226 		case VDEV_AUX_BAD_GUID_SUM:
1227 			(void) printf(gettext("missing device"));
1228 			break;
1229 
1230 		case VDEV_AUX_NO_REPLICAS:
1231 			(void) printf(gettext("insufficient replicas"));
1232 			break;
1233 
1234 		case VDEV_AUX_VERSION_NEWER:
1235 			(void) printf(gettext("newer version"));
1236 			break;
1237 
1238 		case VDEV_AUX_UNSUP_FEAT:
1239 			(void) printf(gettext("unsupported feature(s)"));
1240 			break;
1241 
1242 		case VDEV_AUX_SPARED:
1243 			verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
1244 			    &cb.cb_guid) == 0);
1245 			if (zpool_iter(g_zfs, find_spare, &cb) == 1) {
1246 				if (strcmp(zpool_get_name(cb.cb_zhp),
1247 				    zpool_get_name(zhp)) == 0)
1248 					(void) printf(gettext("currently in "
1249 					    "use"));
1250 				else
1251 					(void) printf(gettext("in use by "
1252 					    "pool '%s'"),
1253 					    zpool_get_name(cb.cb_zhp));
1254 				zpool_close(cb.cb_zhp);
1255 			} else {
1256 				(void) printf(gettext("currently in use"));
1257 			}
1258 			break;
1259 
1260 		case VDEV_AUX_ERR_EXCEEDED:
1261 			(void) printf(gettext("too many errors"));
1262 			break;
1263 
1264 		case VDEV_AUX_IO_FAILURE:
1265 			(void) printf(gettext("experienced I/O failures"));
1266 			break;
1267 
1268 		case VDEV_AUX_BAD_LOG:
1269 			(void) printf(gettext("bad intent log"));
1270 			break;
1271 
1272 		case VDEV_AUX_EXTERNAL:
1273 			(void) printf(gettext("external device fault"));
1274 			break;
1275 
1276 		case VDEV_AUX_SPLIT_POOL:
1277 			(void) printf(gettext("split into new pool"));
1278 			break;
1279 
1280 		default:
1281 			(void) printf(gettext("corrupted data"));
1282 			break;
1283 		}
1284 	}
1285 
1286 	(void) nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_SCAN_STATS,
1287 	    (uint64_t **)&ps, &c);
1288 
1289 	if (ps && ps->pss_state == DSS_SCANNING &&
1290 	    vs->vs_scan_processed != 0 && children == 0) {
1291 		(void) printf(gettext("  (%s)"),
1292 		    (ps->pss_func == POOL_SCAN_RESILVER) ?
1293 		    "resilvering" : "repairing");
1294 	}
1295 
1296 	(void) printf("\n");
1297 
1298 	for (c = 0; c < children; c++) {
1299 		uint64_t islog = B_FALSE, ishole = B_FALSE;
1300 
1301 		/* Don't print logs or holes here */
1302 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
1303 		    &islog);
1304 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE,
1305 		    &ishole);
1306 		if (islog || ishole)
1307 			continue;
1308 		vname = zpool_vdev_name(g_zfs, zhp, child[c], B_TRUE);
1309 		print_status_config(zhp, vname, child[c],
1310 		    namewidth, depth + 2, isspare);
1311 		free(vname);
1312 	}
1313 }
1314 
1315 
1316 /*
1317  * Print the configuration of an exported pool.  Iterate over all vdevs in the
1318  * pool, printing out the name and status for each one.
1319  */
1320 void
1321 print_import_config(const char *name, nvlist_t *nv, int namewidth, int depth)
1322 {
1323 	nvlist_t **child;
1324 	uint_t c, children;
1325 	vdev_stat_t *vs;
1326 	char *type, *vname;
1327 
1328 	verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0);
1329 	if (strcmp(type, VDEV_TYPE_MISSING) == 0 ||
1330 	    strcmp(type, VDEV_TYPE_HOLE) == 0)
1331 		return;
1332 
1333 	verify(nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
1334 	    (uint64_t **)&vs, &c) == 0);
1335 
1336 	(void) printf("\t%*s%-*s", depth, "", namewidth - depth, name);
1337 	(void) printf("  %s", zpool_state_to_name(vs->vs_state, vs->vs_aux));
1338 
1339 	if (vs->vs_aux != 0) {
1340 		(void) printf("  ");
1341 
1342 		switch (vs->vs_aux) {
1343 		case VDEV_AUX_OPEN_FAILED:
1344 			(void) printf(gettext("cannot open"));
1345 			break;
1346 
1347 		case VDEV_AUX_BAD_GUID_SUM:
1348 			(void) printf(gettext("missing device"));
1349 			break;
1350 
1351 		case VDEV_AUX_NO_REPLICAS:
1352 			(void) printf(gettext("insufficient replicas"));
1353 			break;
1354 
1355 		case VDEV_AUX_VERSION_NEWER:
1356 			(void) printf(gettext("newer version"));
1357 			break;
1358 
1359 		case VDEV_AUX_UNSUP_FEAT:
1360 			(void) printf(gettext("unsupported feature(s)"));
1361 			break;
1362 
1363 		case VDEV_AUX_ERR_EXCEEDED:
1364 			(void) printf(gettext("too many errors"));
1365 			break;
1366 
1367 		default:
1368 			(void) printf(gettext("corrupted data"));
1369 			break;
1370 		}
1371 	}
1372 	(void) printf("\n");
1373 
1374 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1375 	    &child, &children) != 0)
1376 		return;
1377 
1378 	for (c = 0; c < children; c++) {
1379 		uint64_t is_log = B_FALSE;
1380 
1381 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
1382 		    &is_log);
1383 		if (is_log)
1384 			continue;
1385 
1386 		vname = zpool_vdev_name(g_zfs, NULL, child[c], B_TRUE);
1387 		print_import_config(vname, child[c], namewidth, depth + 2);
1388 		free(vname);
1389 	}
1390 
1391 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
1392 	    &child, &children) == 0) {
1393 		(void) printf(gettext("\tcache\n"));
1394 		for (c = 0; c < children; c++) {
1395 			vname = zpool_vdev_name(g_zfs, NULL, child[c], B_FALSE);
1396 			(void) printf("\t  %s\n", vname);
1397 			free(vname);
1398 		}
1399 	}
1400 
1401 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
1402 	    &child, &children) == 0) {
1403 		(void) printf(gettext("\tspares\n"));
1404 		for (c = 0; c < children; c++) {
1405 			vname = zpool_vdev_name(g_zfs, NULL, child[c], B_FALSE);
1406 			(void) printf("\t  %s\n", vname);
1407 			free(vname);
1408 		}
1409 	}
1410 }
1411 
1412 /*
1413  * Print log vdevs.
1414  * Logs are recorded as top level vdevs in the main pool child array
1415  * but with "is_log" set to 1. We use either print_status_config() or
1416  * print_import_config() to print the top level logs then any log
1417  * children (eg mirrored slogs) are printed recursively - which
1418  * works because only the top level vdev is marked "is_log"
1419  */
1420 static void
1421 print_logs(zpool_handle_t *zhp, nvlist_t *nv, int namewidth, boolean_t verbose)
1422 {
1423 	uint_t c, children;
1424 	nvlist_t **child;
1425 
1426 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, &child,
1427 	    &children) != 0)
1428 		return;
1429 
1430 	(void) printf(gettext("\tlogs\n"));
1431 
1432 	for (c = 0; c < children; c++) {
1433 		uint64_t is_log = B_FALSE;
1434 		char *name;
1435 
1436 		(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
1437 		    &is_log);
1438 		if (!is_log)
1439 			continue;
1440 		name = zpool_vdev_name(g_zfs, zhp, child[c], B_TRUE);
1441 		if (verbose)
1442 			print_status_config(zhp, name, child[c], namewidth,
1443 			    2, B_FALSE);
1444 		else
1445 			print_import_config(name, child[c], namewidth, 2);
1446 		free(name);
1447 	}
1448 }
1449 
1450 /*
1451  * Display the status for the given pool.
1452  */
1453 static void
1454 show_import(nvlist_t *config)
1455 {
1456 	uint64_t pool_state;
1457 	vdev_stat_t *vs;
1458 	char *name;
1459 	uint64_t guid;
1460 	char *msgid;
1461 	nvlist_t *nvroot;
1462 	int reason;
1463 	const char *health;
1464 	uint_t vsc;
1465 	int namewidth;
1466 	char *comment;
1467 
1468 	verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
1469 	    &name) == 0);
1470 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
1471 	    &guid) == 0);
1472 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
1473 	    &pool_state) == 0);
1474 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
1475 	    &nvroot) == 0);
1476 
1477 	verify(nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_VDEV_STATS,
1478 	    (uint64_t **)&vs, &vsc) == 0);
1479 	health = zpool_state_to_name(vs->vs_state, vs->vs_aux);
1480 
1481 	reason = zpool_import_status(config, &msgid);
1482 
1483 	(void) printf(gettext("   pool: %s\n"), name);
1484 	(void) printf(gettext("     id: %llu\n"), (u_longlong_t)guid);
1485 	(void) printf(gettext("  state: %s"), health);
1486 	if (pool_state == POOL_STATE_DESTROYED)
1487 		(void) printf(gettext(" (DESTROYED)"));
1488 	(void) printf("\n");
1489 
1490 	switch (reason) {
1491 	case ZPOOL_STATUS_MISSING_DEV_R:
1492 	case ZPOOL_STATUS_MISSING_DEV_NR:
1493 	case ZPOOL_STATUS_BAD_GUID_SUM:
1494 		(void) printf(gettext(" status: One or more devices are "
1495 		    "missing from the system.\n"));
1496 		break;
1497 
1498 	case ZPOOL_STATUS_CORRUPT_LABEL_R:
1499 	case ZPOOL_STATUS_CORRUPT_LABEL_NR:
1500 		(void) printf(gettext(" status: One or more devices contains "
1501 		    "corrupted data.\n"));
1502 		break;
1503 
1504 	case ZPOOL_STATUS_CORRUPT_DATA:
1505 		(void) printf(
1506 		    gettext(" status: The pool data is corrupted.\n"));
1507 		break;
1508 
1509 	case ZPOOL_STATUS_OFFLINE_DEV:
1510 		(void) printf(gettext(" status: One or more devices "
1511 		    "are offlined.\n"));
1512 		break;
1513 
1514 	case ZPOOL_STATUS_CORRUPT_POOL:
1515 		(void) printf(gettext(" status: The pool metadata is "
1516 		    "corrupted.\n"));
1517 		break;
1518 
1519 	case ZPOOL_STATUS_VERSION_OLDER:
1520 		(void) printf(gettext(" status: The pool is formatted using a "
1521 		    "legacy on-disk version.\n"));
1522 		break;
1523 
1524 	case ZPOOL_STATUS_VERSION_NEWER:
1525 		(void) printf(gettext(" status: The pool is formatted using an "
1526 		    "incompatible version.\n"));
1527 		break;
1528 
1529 	case ZPOOL_STATUS_FEAT_DISABLED:
1530 		(void) printf(gettext(" status: Some supported features are "
1531 		    "not enabled on the pool.\n"));
1532 		break;
1533 
1534 	case ZPOOL_STATUS_UNSUP_FEAT_READ:
1535 		(void) printf(gettext("status: The pool uses the following "
1536 		    "feature(s) not supported on this sytem:\n"));
1537 		zpool_print_unsup_feat(config);
1538 		break;
1539 
1540 	case ZPOOL_STATUS_UNSUP_FEAT_WRITE:
1541 		(void) printf(gettext("status: The pool can only be accessed "
1542 		    "in read-only mode on this system. It\n\tcannot be "
1543 		    "accessed in read-write mode because it uses the "
1544 		    "following\n\tfeature(s) not supported on this system:\n"));
1545 		zpool_print_unsup_feat(config);
1546 		break;
1547 
1548 	case ZPOOL_STATUS_HOSTID_MISMATCH:
1549 		(void) printf(gettext(" status: The pool was last accessed by "
1550 		    "another system.\n"));
1551 		break;
1552 
1553 	case ZPOOL_STATUS_FAULTED_DEV_R:
1554 	case ZPOOL_STATUS_FAULTED_DEV_NR:
1555 		(void) printf(gettext(" status: One or more devices are "
1556 		    "faulted.\n"));
1557 		break;
1558 
1559 	case ZPOOL_STATUS_BAD_LOG:
1560 		(void) printf(gettext(" status: An intent log record cannot be "
1561 		    "read.\n"));
1562 		break;
1563 
1564 	case ZPOOL_STATUS_RESILVERING:
1565 		(void) printf(gettext(" status: One or more devices were being "
1566 		    "resilvered.\n"));
1567 		break;
1568 
1569 	default:
1570 		/*
1571 		 * No other status can be seen when importing pools.
1572 		 */
1573 		assert(reason == ZPOOL_STATUS_OK);
1574 	}
1575 
1576 	/*
1577 	 * Print out an action according to the overall state of the pool.
1578 	 */
1579 	if (vs->vs_state == VDEV_STATE_HEALTHY) {
1580 		if (reason == ZPOOL_STATUS_VERSION_OLDER ||
1581 		    reason == ZPOOL_STATUS_FEAT_DISABLED) {
1582 			(void) printf(gettext(" action: The pool can be "
1583 			    "imported using its name or numeric identifier, "
1584 			    "though\n\tsome features will not be available "
1585 			    "without an explicit 'zpool upgrade'.\n"));
1586 		} else if (reason == ZPOOL_STATUS_HOSTID_MISMATCH) {
1587 			(void) printf(gettext(" action: The pool can be "
1588 			    "imported using its name or numeric "
1589 			    "identifier and\n\tthe '-f' flag.\n"));
1590 		} else {
1591 			(void) printf(gettext(" action: The pool can be "
1592 			    "imported using its name or numeric "
1593 			    "identifier.\n"));
1594 		}
1595 	} else if (vs->vs_state == VDEV_STATE_DEGRADED) {
1596 		(void) printf(gettext(" action: The pool can be imported "
1597 		    "despite missing or damaged devices.  The\n\tfault "
1598 		    "tolerance of the pool may be compromised if imported.\n"));
1599 	} else {
1600 		switch (reason) {
1601 		case ZPOOL_STATUS_VERSION_NEWER:
1602 			(void) printf(gettext(" action: The pool cannot be "
1603 			    "imported.  Access the pool on a system running "
1604 			    "newer\n\tsoftware, or recreate the pool from "
1605 			    "backup.\n"));
1606 			break;
1607 		case ZPOOL_STATUS_UNSUP_FEAT_READ:
1608 			(void) printf(gettext("action: The pool cannot be "
1609 			    "imported. Access the pool on a system that "
1610 			    "supports\n\tthe required feature(s), or recreate "
1611 			    "the pool from backup.\n"));
1612 			break;
1613 		case ZPOOL_STATUS_UNSUP_FEAT_WRITE:
1614 			(void) printf(gettext("action: The pool cannot be "
1615 			    "imported in read-write mode. Import the pool "
1616 			    "with\n"
1617 			    "\t\"-o readonly=on\", access the pool on a system "
1618 			    "that supports the\n\trequired feature(s), or "
1619 			    "recreate the pool from backup.\n"));
1620 			break;
1621 		case ZPOOL_STATUS_MISSING_DEV_R:
1622 		case ZPOOL_STATUS_MISSING_DEV_NR:
1623 		case ZPOOL_STATUS_BAD_GUID_SUM:
1624 			(void) printf(gettext(" action: The pool cannot be "
1625 			    "imported. Attach the missing\n\tdevices and try "
1626 			    "again.\n"));
1627 			break;
1628 		default:
1629 			(void) printf(gettext(" action: The pool cannot be "
1630 			    "imported due to damaged devices or data.\n"));
1631 		}
1632 	}
1633 
1634 	/* Print the comment attached to the pool. */
1635 	if (nvlist_lookup_string(config, ZPOOL_CONFIG_COMMENT, &comment) == 0)
1636 		(void) printf(gettext("comment: %s\n"), comment);
1637 
1638 	/*
1639 	 * If the state is "closed" or "can't open", and the aux state
1640 	 * is "corrupt data":
1641 	 */
1642 	if (((vs->vs_state == VDEV_STATE_CLOSED) ||
1643 	    (vs->vs_state == VDEV_STATE_CANT_OPEN)) &&
1644 	    (vs->vs_aux == VDEV_AUX_CORRUPT_DATA)) {
1645 		if (pool_state == POOL_STATE_DESTROYED)
1646 			(void) printf(gettext("\tThe pool was destroyed, "
1647 			    "but can be imported using the '-Df' flags.\n"));
1648 		else if (pool_state != POOL_STATE_EXPORTED)
1649 			(void) printf(gettext("\tThe pool may be active on "
1650 			    "another system, but can be imported using\n\t"
1651 			    "the '-f' flag.\n"));
1652 	}
1653 
1654 	if (msgid != NULL)
1655 		(void) printf(gettext("   see: http://illumos.org/msg/%s\n"),
1656 		    msgid);
1657 
1658 	(void) printf(gettext(" config:\n\n"));
1659 
1660 	namewidth = max_width(NULL, nvroot, 0, 0);
1661 	if (namewidth < 10)
1662 		namewidth = 10;
1663 
1664 	print_import_config(name, nvroot, namewidth, 0);
1665 	if (num_logs(nvroot) > 0)
1666 		print_logs(NULL, nvroot, namewidth, B_FALSE);
1667 
1668 	if (reason == ZPOOL_STATUS_BAD_GUID_SUM) {
1669 		(void) printf(gettext("\n\tAdditional devices are known to "
1670 		    "be part of this pool, though their\n\texact "
1671 		    "configuration cannot be determined.\n"));
1672 	}
1673 }
1674 
1675 /*
1676  * Perform the import for the given configuration.  This passes the heavy
1677  * lifting off to zpool_import_props(), and then mounts the datasets contained
1678  * within the pool.
1679  */
1680 static int
1681 do_import(nvlist_t *config, const char *newname, const char *mntopts,
1682     nvlist_t *props, int flags)
1683 {
1684 	zpool_handle_t *zhp;
1685 	char *name;
1686 	uint64_t state;
1687 	uint64_t version;
1688 
1689 	verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
1690 	    &name) == 0);
1691 
1692 	verify(nvlist_lookup_uint64(config,
1693 	    ZPOOL_CONFIG_POOL_STATE, &state) == 0);
1694 	verify(nvlist_lookup_uint64(config,
1695 	    ZPOOL_CONFIG_VERSION, &version) == 0);
1696 	if (!SPA_VERSION_IS_SUPPORTED(version)) {
1697 		(void) fprintf(stderr, gettext("cannot import '%s': pool "
1698 		    "is formatted using an unsupported ZFS version\n"), name);
1699 		return (1);
1700 	} else if (state != POOL_STATE_EXPORTED &&
1701 	    !(flags & ZFS_IMPORT_ANY_HOST)) {
1702 		uint64_t hostid;
1703 
1704 		if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID,
1705 		    &hostid) == 0) {
1706 			if ((unsigned long)hostid != gethostid()) {
1707 				char *hostname;
1708 				uint64_t timestamp;
1709 				time_t t;
1710 
1711 				verify(nvlist_lookup_string(config,
1712 				    ZPOOL_CONFIG_HOSTNAME, &hostname) == 0);
1713 				verify(nvlist_lookup_uint64(config,
1714 				    ZPOOL_CONFIG_TIMESTAMP, &timestamp) == 0);
1715 				t = timestamp;
1716 				(void) fprintf(stderr, gettext("cannot import "
1717 				    "'%s': pool may be in use from other "
1718 				    "system, it was last accessed by %s "
1719 				    "(hostid: 0x%lx) on %s"), name, hostname,
1720 				    (unsigned long)hostid,
1721 				    asctime(localtime(&t)));
1722 				(void) fprintf(stderr, gettext("use '-f' to "
1723 				    "import anyway\n"));
1724 				return (1);
1725 			}
1726 		} else {
1727 			(void) fprintf(stderr, gettext("cannot import '%s': "
1728 			    "pool may be in use from other system\n"), name);
1729 			(void) fprintf(stderr, gettext("use '-f' to import "
1730 			    "anyway\n"));
1731 			return (1);
1732 		}
1733 	}
1734 
1735 	if (zpool_import_props(g_zfs, config, newname, props, flags) != 0)
1736 		return (1);
1737 
1738 	if (newname != NULL)
1739 		name = (char *)newname;
1740 
1741 	if ((zhp = zpool_open_canfail(g_zfs, name)) == NULL)
1742 		return (1);
1743 
1744 	if (zpool_get_state(zhp) != POOL_STATE_UNAVAIL &&
1745 	    !(flags & ZFS_IMPORT_ONLY) &&
1746 	    zpool_enable_datasets(zhp, mntopts, 0) != 0) {
1747 		zpool_close(zhp);
1748 		return (1);
1749 	}
1750 
1751 	zpool_close(zhp);
1752 	return (0);
1753 }
1754 
1755 /*
1756  * zpool import [-d dir] [-D]
1757  *       import [-o mntopts] [-o prop=value] ... [-R root] [-D]
1758  *              [-d dir | -c cachefile] [-f] -a
1759  *       import [-o mntopts] [-o prop=value] ... [-R root] [-D]
1760  *              [-d dir | -c cachefile] [-f] [-n] [-F] <pool | id> [newpool]
1761  *
1762  *	 -c	Read pool information from a cachefile instead of searching
1763  *		devices.
1764  *
1765  *       -d	Scan in a specific directory, other than /dev/dsk.  More than
1766  *		one directory can be specified using multiple '-d' options.
1767  *
1768  *       -D     Scan for previously destroyed pools or import all or only
1769  *              specified destroyed pools.
1770  *
1771  *       -R	Temporarily import the pool, with all mountpoints relative to
1772  *		the given root.  The pool will remain exported when the machine
1773  *		is rebooted.
1774  *
1775  *       -V	Import even in the presence of faulted vdevs.  This is an
1776  *       	intentionally undocumented option for testing purposes, and
1777  *       	treats the pool configuration as complete, leaving any bad
1778  *		vdevs in the FAULTED state. In other words, it does verbatim
1779  *		import.
1780  *
1781  *       -f	Force import, even if it appears that the pool is active.
1782  *
1783  *       -F     Attempt rewind if necessary.
1784  *
1785  *       -n     See if rewind would work, but don't actually rewind.
1786  *
1787  *       -N     Import the pool but don't mount datasets.
1788  *
1789  *       -T     Specify a starting txg to use for import. This option is
1790  *       	intentionally undocumented option for testing purposes.
1791  *
1792  *       -a	Import all pools found.
1793  *
1794  *       -o	Set property=value and/or temporary mount options (without '=').
1795  *
1796  * The import command scans for pools to import, and import pools based on pool
1797  * name and GUID.  The pool can also be renamed as part of the import process.
1798  */
1799 int
1800 zpool_do_import(int argc, char **argv)
1801 {
1802 	char **searchdirs = NULL;
1803 	int nsearch = 0;
1804 	int c;
1805 	int err = 0;
1806 	nvlist_t *pools = NULL;
1807 	boolean_t do_all = B_FALSE;
1808 	boolean_t do_destroyed = B_FALSE;
1809 	char *mntopts = NULL;
1810 	nvpair_t *elem;
1811 	nvlist_t *config;
1812 	uint64_t searchguid = 0;
1813 	char *searchname = NULL;
1814 	char *propval;
1815 	nvlist_t *found_config;
1816 	nvlist_t *policy = NULL;
1817 	nvlist_t *props = NULL;
1818 	boolean_t first;
1819 	int flags = ZFS_IMPORT_NORMAL;
1820 	uint32_t rewind_policy = ZPOOL_NO_REWIND;
1821 	boolean_t dryrun = B_FALSE;
1822 	boolean_t do_rewind = B_FALSE;
1823 	boolean_t xtreme_rewind = B_FALSE;
1824 	uint64_t pool_state, txg = -1ULL;
1825 	char *cachefile = NULL;
1826 	importargs_t idata = { 0 };
1827 	char *endptr;
1828 
1829 	/* check options */
1830 	while ((c = getopt(argc, argv, ":aCc:d:DEfFmnNo:rR:T:VX")) != -1) {
1831 		switch (c) {
1832 		case 'a':
1833 			do_all = B_TRUE;
1834 			break;
1835 		case 'c':
1836 			cachefile = optarg;
1837 			break;
1838 		case 'd':
1839 			if (searchdirs == NULL) {
1840 				searchdirs = safe_malloc(sizeof (char *));
1841 			} else {
1842 				char **tmp = safe_malloc((nsearch + 1) *
1843 				    sizeof (char *));
1844 				bcopy(searchdirs, tmp, nsearch *
1845 				    sizeof (char *));
1846 				free(searchdirs);
1847 				searchdirs = tmp;
1848 			}
1849 			searchdirs[nsearch++] = optarg;
1850 			break;
1851 		case 'D':
1852 			do_destroyed = B_TRUE;
1853 			break;
1854 		case 'f':
1855 			flags |= ZFS_IMPORT_ANY_HOST;
1856 			break;
1857 		case 'F':
1858 			do_rewind = B_TRUE;
1859 			break;
1860 		case 'm':
1861 			flags |= ZFS_IMPORT_MISSING_LOG;
1862 			break;
1863 		case 'n':
1864 			dryrun = B_TRUE;
1865 			break;
1866 		case 'N':
1867 			flags |= ZFS_IMPORT_ONLY;
1868 			break;
1869 		case 'o':
1870 			if ((propval = strchr(optarg, '=')) != NULL) {
1871 				*propval = '\0';
1872 				propval++;
1873 				if (add_prop_list(optarg, propval,
1874 				    &props, B_TRUE))
1875 					goto error;
1876 			} else {
1877 				mntopts = optarg;
1878 			}
1879 			break;
1880 		case 'R':
1881 			if (add_prop_list(zpool_prop_to_name(
1882 			    ZPOOL_PROP_ALTROOT), optarg, &props, B_TRUE))
1883 				goto error;
1884 			if (nvlist_lookup_string(props,
1885 			    zpool_prop_to_name(ZPOOL_PROP_CACHEFILE),
1886 			    &propval) == 0)
1887 				break;
1888 			if (add_prop_list(zpool_prop_to_name(
1889 			    ZPOOL_PROP_CACHEFILE), "none", &props, B_TRUE))
1890 				goto error;
1891 			break;
1892 		case 'T':
1893 			errno = 0;
1894 			txg = strtoull(optarg, &endptr, 0);
1895 			if (errno != 0 || *endptr != '\0') {
1896 				(void) fprintf(stderr,
1897 				    gettext("invalid txg value\n"));
1898 				usage(B_FALSE);
1899 			}
1900 			rewind_policy = ZPOOL_DO_REWIND | ZPOOL_EXTREME_REWIND;
1901 			break;
1902 		case 'V':
1903 			flags |= ZFS_IMPORT_VERBATIM;
1904 			break;
1905 		case 'X':
1906 			xtreme_rewind = B_TRUE;
1907 			break;
1908 		case ':':
1909 			(void) fprintf(stderr, gettext("missing argument for "
1910 			    "'%c' option\n"), optopt);
1911 			usage(B_FALSE);
1912 			break;
1913 		case '?':
1914 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
1915 			    optopt);
1916 			usage(B_FALSE);
1917 		}
1918 	}
1919 
1920 	argc -= optind;
1921 	argv += optind;
1922 
1923 	if (cachefile && nsearch != 0) {
1924 		(void) fprintf(stderr, gettext("-c is incompatible with -d\n"));
1925 		usage(B_FALSE);
1926 	}
1927 
1928 	if ((dryrun || xtreme_rewind) && !do_rewind) {
1929 		(void) fprintf(stderr,
1930 		    gettext("-n or -X only meaningful with -F\n"));
1931 		usage(B_FALSE);
1932 	}
1933 	if (dryrun)
1934 		rewind_policy = ZPOOL_TRY_REWIND;
1935 	else if (do_rewind)
1936 		rewind_policy = ZPOOL_DO_REWIND;
1937 	if (xtreme_rewind)
1938 		rewind_policy |= ZPOOL_EXTREME_REWIND;
1939 
1940 	/* In the future, we can capture further policy and include it here */
1941 	if (nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) != 0 ||
1942 	    nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, txg) != 0 ||
1943 	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind_policy) != 0)
1944 		goto error;
1945 
1946 	if (searchdirs == NULL) {
1947 		searchdirs = safe_malloc(sizeof (char *));
1948 		searchdirs[0] = "/dev/dsk";
1949 		nsearch = 1;
1950 	}
1951 
1952 	/* check argument count */
1953 	if (do_all) {
1954 		if (argc != 0) {
1955 			(void) fprintf(stderr, gettext("too many arguments\n"));
1956 			usage(B_FALSE);
1957 		}
1958 	} else {
1959 		if (argc > 2) {
1960 			(void) fprintf(stderr, gettext("too many arguments\n"));
1961 			usage(B_FALSE);
1962 		}
1963 
1964 		/*
1965 		 * Check for the SYS_CONFIG privilege.  We do this explicitly
1966 		 * here because otherwise any attempt to discover pools will
1967 		 * silently fail.
1968 		 */
1969 		if (argc == 0 && !priv_ineffect(PRIV_SYS_CONFIG)) {
1970 			(void) fprintf(stderr, gettext("cannot "
1971 			    "discover pools: permission denied\n"));
1972 			free(searchdirs);
1973 			nvlist_free(policy);
1974 			return (1);
1975 		}
1976 	}
1977 
1978 	/*
1979 	 * Depending on the arguments given, we do one of the following:
1980 	 *
1981 	 *	<none>	Iterate through all pools and display information about
1982 	 *		each one.
1983 	 *
1984 	 *	-a	Iterate through all pools and try to import each one.
1985 	 *
1986 	 *	<id>	Find the pool that corresponds to the given GUID/pool
1987 	 *		name and import that one.
1988 	 *
1989 	 *	-D	Above options applies only to destroyed pools.
1990 	 */
1991 	if (argc != 0) {
1992 		char *endptr;
1993 
1994 		errno = 0;
1995 		searchguid = strtoull(argv[0], &endptr, 10);
1996 		if (errno != 0 || *endptr != '\0') {
1997 			searchname = argv[0];
1998 			searchguid = 0;
1999 		}
2000 		found_config = NULL;
2001 
2002 		/*
2003 		 * User specified a name or guid.  Ensure it's unique.
2004 		 */
2005 		idata.unique = B_TRUE;
2006 	}
2007 
2008 
2009 	idata.path = searchdirs;
2010 	idata.paths = nsearch;
2011 	idata.poolname = searchname;
2012 	idata.guid = searchguid;
2013 	idata.cachefile = cachefile;
2014 
2015 	pools = zpool_search_import(g_zfs, &idata);
2016 
2017 	if (pools != NULL && idata.exists &&
2018 	    (argc == 1 || strcmp(argv[0], argv[1]) == 0)) {
2019 		(void) fprintf(stderr, gettext("cannot import '%s': "
2020 		    "a pool with that name already exists\n"),
2021 		    argv[0]);
2022 		(void) fprintf(stderr, gettext("use the form '%s "
2023 		    "<pool | id> <newpool>' to give it a new name\n"),
2024 		    "zpool import");
2025 		err = 1;
2026 	} else if (pools == NULL && idata.exists) {
2027 		(void) fprintf(stderr, gettext("cannot import '%s': "
2028 		    "a pool with that name is already created/imported,\n"),
2029 		    argv[0]);
2030 		(void) fprintf(stderr, gettext("and no additional pools "
2031 		    "with that name were found\n"));
2032 		err = 1;
2033 	} else if (pools == NULL) {
2034 		if (argc != 0) {
2035 			(void) fprintf(stderr, gettext("cannot import '%s': "
2036 			    "no such pool available\n"), argv[0]);
2037 		}
2038 		err = 1;
2039 	}
2040 
2041 	if (err == 1) {
2042 		free(searchdirs);
2043 		nvlist_free(policy);
2044 		return (1);
2045 	}
2046 
2047 	/*
2048 	 * At this point we have a list of import candidate configs. Even if
2049 	 * we were searching by pool name or guid, we still need to
2050 	 * post-process the list to deal with pool state and possible
2051 	 * duplicate names.
2052 	 */
2053 	err = 0;
2054 	elem = NULL;
2055 	first = B_TRUE;
2056 	while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2057 
2058 		verify(nvpair_value_nvlist(elem, &config) == 0);
2059 
2060 		verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
2061 		    &pool_state) == 0);
2062 		if (!do_destroyed && pool_state == POOL_STATE_DESTROYED)
2063 			continue;
2064 		if (do_destroyed && pool_state != POOL_STATE_DESTROYED)
2065 			continue;
2066 
2067 		verify(nvlist_add_nvlist(config, ZPOOL_REWIND_POLICY,
2068 		    policy) == 0);
2069 
2070 		if (argc == 0) {
2071 			if (first)
2072 				first = B_FALSE;
2073 			else if (!do_all)
2074 				(void) printf("\n");
2075 
2076 			if (do_all) {
2077 				err |= do_import(config, NULL, mntopts,
2078 				    props, flags);
2079 			} else {
2080 				show_import(config);
2081 			}
2082 		} else if (searchname != NULL) {
2083 			char *name;
2084 
2085 			/*
2086 			 * We are searching for a pool based on name.
2087 			 */
2088 			verify(nvlist_lookup_string(config,
2089 			    ZPOOL_CONFIG_POOL_NAME, &name) == 0);
2090 
2091 			if (strcmp(name, searchname) == 0) {
2092 				if (found_config != NULL) {
2093 					(void) fprintf(stderr, gettext(
2094 					    "cannot import '%s': more than "
2095 					    "one matching pool\n"), searchname);
2096 					(void) fprintf(stderr, gettext(
2097 					    "import by numeric ID instead\n"));
2098 					err = B_TRUE;
2099 				}
2100 				found_config = config;
2101 			}
2102 		} else {
2103 			uint64_t guid;
2104 
2105 			/*
2106 			 * Search for a pool by guid.
2107 			 */
2108 			verify(nvlist_lookup_uint64(config,
2109 			    ZPOOL_CONFIG_POOL_GUID, &guid) == 0);
2110 
2111 			if (guid == searchguid)
2112 				found_config = config;
2113 		}
2114 	}
2115 
2116 	/*
2117 	 * If we were searching for a specific pool, verify that we found a
2118 	 * pool, and then do the import.
2119 	 */
2120 	if (argc != 0 && err == 0) {
2121 		if (found_config == NULL) {
2122 			(void) fprintf(stderr, gettext("cannot import '%s': "
2123 			    "no such pool available\n"), argv[0]);
2124 			err = B_TRUE;
2125 		} else {
2126 			err |= do_import(found_config, argc == 1 ? NULL :
2127 			    argv[1], mntopts, props, flags);
2128 		}
2129 	}
2130 
2131 	/*
2132 	 * If we were just looking for pools, report an error if none were
2133 	 * found.
2134 	 */
2135 	if (argc == 0 && first)
2136 		(void) fprintf(stderr,
2137 		    gettext("no pools available to import\n"));
2138 
2139 error:
2140 	nvlist_free(props);
2141 	nvlist_free(pools);
2142 	nvlist_free(policy);
2143 	free(searchdirs);
2144 
2145 	return (err ? 1 : 0);
2146 }
2147 
2148 typedef struct iostat_cbdata {
2149 	boolean_t cb_verbose;
2150 	int cb_namewidth;
2151 	int cb_iteration;
2152 	zpool_list_t *cb_list;
2153 } iostat_cbdata_t;
2154 
2155 static void
2156 print_iostat_separator(iostat_cbdata_t *cb)
2157 {
2158 	int i = 0;
2159 
2160 	for (i = 0; i < cb->cb_namewidth; i++)
2161 		(void) printf("-");
2162 	(void) printf("  -----  -----  -----  -----  -----  -----\n");
2163 }
2164 
2165 static void
2166 print_iostat_header(iostat_cbdata_t *cb)
2167 {
2168 	(void) printf("%*s     capacity     operations    bandwidth\n",
2169 	    cb->cb_namewidth, "");
2170 	(void) printf("%-*s  alloc   free   read  write   read  write\n",
2171 	    cb->cb_namewidth, "pool");
2172 	print_iostat_separator(cb);
2173 }
2174 
2175 /*
2176  * Display a single statistic.
2177  */
2178 static void
2179 print_one_stat(uint64_t value)
2180 {
2181 	char buf[64];
2182 
2183 	zfs_nicenum(value, buf, sizeof (buf));
2184 	(void) printf("  %5s", buf);
2185 }
2186 
2187 /*
2188  * Print out all the statistics for the given vdev.  This can either be the
2189  * toplevel configuration, or called recursively.  If 'name' is NULL, then this
2190  * is a verbose output, and we don't want to display the toplevel pool stats.
2191  */
2192 void
2193 print_vdev_stats(zpool_handle_t *zhp, const char *name, nvlist_t *oldnv,
2194     nvlist_t *newnv, iostat_cbdata_t *cb, int depth)
2195 {
2196 	nvlist_t **oldchild, **newchild;
2197 	uint_t c, children;
2198 	vdev_stat_t *oldvs, *newvs;
2199 	vdev_stat_t zerovs = { 0 };
2200 	uint64_t tdelta;
2201 	double scale;
2202 	char *vname;
2203 
2204 	if (oldnv != NULL) {
2205 		verify(nvlist_lookup_uint64_array(oldnv,
2206 		    ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&oldvs, &c) == 0);
2207 	} else {
2208 		oldvs = &zerovs;
2209 	}
2210 
2211 	verify(nvlist_lookup_uint64_array(newnv, ZPOOL_CONFIG_VDEV_STATS,
2212 	    (uint64_t **)&newvs, &c) == 0);
2213 
2214 	if (strlen(name) + depth > cb->cb_namewidth)
2215 		(void) printf("%*s%s", depth, "", name);
2216 	else
2217 		(void) printf("%*s%s%*s", depth, "", name,
2218 		    (int)(cb->cb_namewidth - strlen(name) - depth), "");
2219 
2220 	tdelta = newvs->vs_timestamp - oldvs->vs_timestamp;
2221 
2222 	if (tdelta == 0)
2223 		scale = 1.0;
2224 	else
2225 		scale = (double)NANOSEC / tdelta;
2226 
2227 	/* only toplevel vdevs have capacity stats */
2228 	if (newvs->vs_space == 0) {
2229 		(void) printf("      -      -");
2230 	} else {
2231 		print_one_stat(newvs->vs_alloc);
2232 		print_one_stat(newvs->vs_space - newvs->vs_alloc);
2233 	}
2234 
2235 	print_one_stat((uint64_t)(scale * (newvs->vs_ops[ZIO_TYPE_READ] -
2236 	    oldvs->vs_ops[ZIO_TYPE_READ])));
2237 
2238 	print_one_stat((uint64_t)(scale * (newvs->vs_ops[ZIO_TYPE_WRITE] -
2239 	    oldvs->vs_ops[ZIO_TYPE_WRITE])));
2240 
2241 	print_one_stat((uint64_t)(scale * (newvs->vs_bytes[ZIO_TYPE_READ] -
2242 	    oldvs->vs_bytes[ZIO_TYPE_READ])));
2243 
2244 	print_one_stat((uint64_t)(scale * (newvs->vs_bytes[ZIO_TYPE_WRITE] -
2245 	    oldvs->vs_bytes[ZIO_TYPE_WRITE])));
2246 
2247 	(void) printf("\n");
2248 
2249 	if (!cb->cb_verbose)
2250 		return;
2251 
2252 	if (nvlist_lookup_nvlist_array(newnv, ZPOOL_CONFIG_CHILDREN,
2253 	    &newchild, &children) != 0)
2254 		return;
2255 
2256 	if (oldnv && nvlist_lookup_nvlist_array(oldnv, ZPOOL_CONFIG_CHILDREN,
2257 	    &oldchild, &c) != 0)
2258 		return;
2259 
2260 	for (c = 0; c < children; c++) {
2261 		uint64_t ishole = B_FALSE, islog = B_FALSE;
2262 
2263 		(void) nvlist_lookup_uint64(newchild[c], ZPOOL_CONFIG_IS_HOLE,
2264 		    &ishole);
2265 
2266 		(void) nvlist_lookup_uint64(newchild[c], ZPOOL_CONFIG_IS_LOG,
2267 		    &islog);
2268 
2269 		if (ishole || islog)
2270 			continue;
2271 
2272 		vname = zpool_vdev_name(g_zfs, zhp, newchild[c], B_FALSE);
2273 		print_vdev_stats(zhp, vname, oldnv ? oldchild[c] : NULL,
2274 		    newchild[c], cb, depth + 2);
2275 		free(vname);
2276 	}
2277 
2278 	/*
2279 	 * Log device section
2280 	 */
2281 
2282 	if (num_logs(newnv) > 0) {
2283 		(void) printf("%-*s      -      -      -      -      -      "
2284 		    "-\n", cb->cb_namewidth, "logs");
2285 
2286 		for (c = 0; c < children; c++) {
2287 			uint64_t islog = B_FALSE;
2288 			(void) nvlist_lookup_uint64(newchild[c],
2289 			    ZPOOL_CONFIG_IS_LOG, &islog);
2290 
2291 			if (islog) {
2292 				vname = zpool_vdev_name(g_zfs, zhp, newchild[c],
2293 				    B_FALSE);
2294 				print_vdev_stats(zhp, vname, oldnv ?
2295 				    oldchild[c] : NULL, newchild[c],
2296 				    cb, depth + 2);
2297 				free(vname);
2298 			}
2299 		}
2300 
2301 	}
2302 
2303 	/*
2304 	 * Include level 2 ARC devices in iostat output
2305 	 */
2306 	if (nvlist_lookup_nvlist_array(newnv, ZPOOL_CONFIG_L2CACHE,
2307 	    &newchild, &children) != 0)
2308 		return;
2309 
2310 	if (oldnv && nvlist_lookup_nvlist_array(oldnv, ZPOOL_CONFIG_L2CACHE,
2311 	    &oldchild, &c) != 0)
2312 		return;
2313 
2314 	if (children > 0) {
2315 		(void) printf("%-*s      -      -      -      -      -      "
2316 		    "-\n", cb->cb_namewidth, "cache");
2317 		for (c = 0; c < children; c++) {
2318 			vname = zpool_vdev_name(g_zfs, zhp, newchild[c],
2319 			    B_FALSE);
2320 			print_vdev_stats(zhp, vname, oldnv ? oldchild[c] : NULL,
2321 			    newchild[c], cb, depth + 2);
2322 			free(vname);
2323 		}
2324 	}
2325 }
2326 
2327 static int
2328 refresh_iostat(zpool_handle_t *zhp, void *data)
2329 {
2330 	iostat_cbdata_t *cb = data;
2331 	boolean_t missing;
2332 
2333 	/*
2334 	 * If the pool has disappeared, remove it from the list and continue.
2335 	 */
2336 	if (zpool_refresh_stats(zhp, &missing) != 0)
2337 		return (-1);
2338 
2339 	if (missing)
2340 		pool_list_remove(cb->cb_list, zhp);
2341 
2342 	return (0);
2343 }
2344 
2345 /*
2346  * Callback to print out the iostats for the given pool.
2347  */
2348 int
2349 print_iostat(zpool_handle_t *zhp, void *data)
2350 {
2351 	iostat_cbdata_t *cb = data;
2352 	nvlist_t *oldconfig, *newconfig;
2353 	nvlist_t *oldnvroot, *newnvroot;
2354 
2355 	newconfig = zpool_get_config(zhp, &oldconfig);
2356 
2357 	if (cb->cb_iteration == 1)
2358 		oldconfig = NULL;
2359 
2360 	verify(nvlist_lookup_nvlist(newconfig, ZPOOL_CONFIG_VDEV_TREE,
2361 	    &newnvroot) == 0);
2362 
2363 	if (oldconfig == NULL)
2364 		oldnvroot = NULL;
2365 	else
2366 		verify(nvlist_lookup_nvlist(oldconfig, ZPOOL_CONFIG_VDEV_TREE,
2367 		    &oldnvroot) == 0);
2368 
2369 	/*
2370 	 * Print out the statistics for the pool.
2371 	 */
2372 	print_vdev_stats(zhp, zpool_get_name(zhp), oldnvroot, newnvroot, cb, 0);
2373 
2374 	if (cb->cb_verbose)
2375 		print_iostat_separator(cb);
2376 
2377 	return (0);
2378 }
2379 
2380 int
2381 get_namewidth(zpool_handle_t *zhp, void *data)
2382 {
2383 	iostat_cbdata_t *cb = data;
2384 	nvlist_t *config, *nvroot;
2385 
2386 	if ((config = zpool_get_config(zhp, NULL)) != NULL) {
2387 		verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2388 		    &nvroot) == 0);
2389 		if (!cb->cb_verbose)
2390 			cb->cb_namewidth = strlen(zpool_get_name(zhp));
2391 		else
2392 			cb->cb_namewidth = max_width(zhp, nvroot, 0,
2393 			    cb->cb_namewidth);
2394 	}
2395 
2396 	/*
2397 	 * The width must fall into the range [10,38].  The upper limit is the
2398 	 * maximum we can have and still fit in 80 columns.
2399 	 */
2400 	if (cb->cb_namewidth < 10)
2401 		cb->cb_namewidth = 10;
2402 	if (cb->cb_namewidth > 38)
2403 		cb->cb_namewidth = 38;
2404 
2405 	return (0);
2406 }
2407 
2408 /*
2409  * Parse the input string, get the 'interval' and 'count' value if there is one.
2410  */
2411 static void
2412 get_interval_count(int *argcp, char **argv, unsigned long *iv,
2413     unsigned long *cnt)
2414 {
2415 	unsigned long interval = 0, count = 0;
2416 	int argc = *argcp, errno;
2417 
2418 	/*
2419 	 * Determine if the last argument is an integer or a pool name
2420 	 */
2421 	if (argc > 0 && isdigit(argv[argc - 1][0])) {
2422 		char *end;
2423 
2424 		errno = 0;
2425 		interval = strtoul(argv[argc - 1], &end, 10);
2426 
2427 		if (*end == '\0' && errno == 0) {
2428 			if (interval == 0) {
2429 				(void) fprintf(stderr, gettext("interval "
2430 				    "cannot be zero\n"));
2431 				usage(B_FALSE);
2432 			}
2433 			/*
2434 			 * Ignore the last parameter
2435 			 */
2436 			argc--;
2437 		} else {
2438 			/*
2439 			 * If this is not a valid number, just plow on.  The
2440 			 * user will get a more informative error message later
2441 			 * on.
2442 			 */
2443 			interval = 0;
2444 		}
2445 	}
2446 
2447 	/*
2448 	 * If the last argument is also an integer, then we have both a count
2449 	 * and an interval.
2450 	 */
2451 	if (argc > 0 && isdigit(argv[argc - 1][0])) {
2452 		char *end;
2453 
2454 		errno = 0;
2455 		count = interval;
2456 		interval = strtoul(argv[argc - 1], &end, 10);
2457 
2458 		if (*end == '\0' && errno == 0) {
2459 			if (interval == 0) {
2460 				(void) fprintf(stderr, gettext("interval "
2461 				    "cannot be zero\n"));
2462 				usage(B_FALSE);
2463 			}
2464 
2465 			/*
2466 			 * Ignore the last parameter
2467 			 */
2468 			argc--;
2469 		} else {
2470 			interval = 0;
2471 		}
2472 	}
2473 
2474 	*iv = interval;
2475 	*cnt = count;
2476 	*argcp = argc;
2477 }
2478 
2479 static void
2480 get_timestamp_arg(char c)
2481 {
2482 	if (c == 'u')
2483 		timestamp_fmt = UDATE;
2484 	else if (c == 'd')
2485 		timestamp_fmt = DDATE;
2486 	else
2487 		usage(B_FALSE);
2488 }
2489 
2490 /*
2491  * zpool iostat [-v] [-T d|u] [pool] ... [interval [count]]
2492  *
2493  *	-v	Display statistics for individual vdevs
2494  *	-T	Display a timestamp in date(1) or Unix format
2495  *
2496  * This command can be tricky because we want to be able to deal with pool
2497  * creation/destruction as well as vdev configuration changes.  The bulk of this
2498  * processing is handled by the pool_list_* routines in zpool_iter.c.  We rely
2499  * on pool_list_update() to detect the addition of new pools.  Configuration
2500  * changes are all handled within libzfs.
2501  */
2502 int
2503 zpool_do_iostat(int argc, char **argv)
2504 {
2505 	int c;
2506 	int ret;
2507 	int npools;
2508 	unsigned long interval = 0, count = 0;
2509 	zpool_list_t *list;
2510 	boolean_t verbose = B_FALSE;
2511 	iostat_cbdata_t cb;
2512 
2513 	/* check options */
2514 	while ((c = getopt(argc, argv, "T:v")) != -1) {
2515 		switch (c) {
2516 		case 'T':
2517 			get_timestamp_arg(*optarg);
2518 			break;
2519 		case 'v':
2520 			verbose = B_TRUE;
2521 			break;
2522 		case '?':
2523 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
2524 			    optopt);
2525 			usage(B_FALSE);
2526 		}
2527 	}
2528 
2529 	argc -= optind;
2530 	argv += optind;
2531 
2532 	get_interval_count(&argc, argv, &interval, &count);
2533 
2534 	/*
2535 	 * Construct the list of all interesting pools.
2536 	 */
2537 	ret = 0;
2538 	if ((list = pool_list_get(argc, argv, NULL, &ret)) == NULL)
2539 		return (1);
2540 
2541 	if (pool_list_count(list) == 0 && argc != 0) {
2542 		pool_list_free(list);
2543 		return (1);
2544 	}
2545 
2546 	if (pool_list_count(list) == 0 && interval == 0) {
2547 		pool_list_free(list);
2548 		(void) fprintf(stderr, gettext("no pools available\n"));
2549 		return (1);
2550 	}
2551 
2552 	/*
2553 	 * Enter the main iostat loop.
2554 	 */
2555 	cb.cb_list = list;
2556 	cb.cb_verbose = verbose;
2557 	cb.cb_iteration = 0;
2558 	cb.cb_namewidth = 0;
2559 
2560 	for (;;) {
2561 		pool_list_update(list);
2562 
2563 		if ((npools = pool_list_count(list)) == 0)
2564 			break;
2565 
2566 		/*
2567 		 * Refresh all statistics.  This is done as an explicit step
2568 		 * before calculating the maximum name width, so that any
2569 		 * configuration changes are properly accounted for.
2570 		 */
2571 		(void) pool_list_iter(list, B_FALSE, refresh_iostat, &cb);
2572 
2573 		/*
2574 		 * Iterate over all pools to determine the maximum width
2575 		 * for the pool / device name column across all pools.
2576 		 */
2577 		cb.cb_namewidth = 0;
2578 		(void) pool_list_iter(list, B_FALSE, get_namewidth, &cb);
2579 
2580 		if (timestamp_fmt != NODATE)
2581 			print_timestamp(timestamp_fmt);
2582 
2583 		/*
2584 		 * If it's the first time, or verbose mode, print the header.
2585 		 */
2586 		if (++cb.cb_iteration == 1 || verbose)
2587 			print_iostat_header(&cb);
2588 
2589 		(void) pool_list_iter(list, B_FALSE, print_iostat, &cb);
2590 
2591 		/*
2592 		 * If there's more than one pool, and we're not in verbose mode
2593 		 * (which prints a separator for us), then print a separator.
2594 		 */
2595 		if (npools > 1 && !verbose)
2596 			print_iostat_separator(&cb);
2597 
2598 		if (verbose)
2599 			(void) printf("\n");
2600 
2601 		/*
2602 		 * Flush the output so that redirection to a file isn't buffered
2603 		 * indefinitely.
2604 		 */
2605 		(void) fflush(stdout);
2606 
2607 		if (interval == 0)
2608 			break;
2609 
2610 		if (count != 0 && --count == 0)
2611 			break;
2612 
2613 		(void) sleep(interval);
2614 	}
2615 
2616 	pool_list_free(list);
2617 
2618 	return (ret);
2619 }
2620 
2621 typedef struct list_cbdata {
2622 	boolean_t	cb_verbose;
2623 	int		cb_namewidth;
2624 	boolean_t	cb_scripted;
2625 	zprop_list_t	*cb_proplist;
2626 	boolean_t	cb_literal;
2627 } list_cbdata_t;
2628 
2629 /*
2630  * Given a list of columns to display, output appropriate headers for each one.
2631  */
2632 static void
2633 print_header(list_cbdata_t *cb)
2634 {
2635 	zprop_list_t *pl = cb->cb_proplist;
2636 	char headerbuf[ZPOOL_MAXPROPLEN];
2637 	const char *header;
2638 	boolean_t first = B_TRUE;
2639 	boolean_t right_justify;
2640 	size_t width = 0;
2641 
2642 	for (; pl != NULL; pl = pl->pl_next) {
2643 		width = pl->pl_width;
2644 		if (first && cb->cb_verbose) {
2645 			/*
2646 			 * Reset the width to accommodate the verbose listing
2647 			 * of devices.
2648 			 */
2649 			width = cb->cb_namewidth;
2650 		}
2651 
2652 		if (!first)
2653 			(void) printf("  ");
2654 		else
2655 			first = B_FALSE;
2656 
2657 		right_justify = B_FALSE;
2658 		if (pl->pl_prop != ZPROP_INVAL) {
2659 			header = zpool_prop_column_name(pl->pl_prop);
2660 			right_justify = zpool_prop_align_right(pl->pl_prop);
2661 		} else {
2662 			int i;
2663 
2664 			for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
2665 				headerbuf[i] = toupper(pl->pl_user_prop[i]);
2666 			headerbuf[i] = '\0';
2667 			header = headerbuf;
2668 		}
2669 
2670 		if (pl->pl_next == NULL && !right_justify)
2671 			(void) printf("%s", header);
2672 		else if (right_justify)
2673 			(void) printf("%*s", width, header);
2674 		else
2675 			(void) printf("%-*s", width, header);
2676 
2677 	}
2678 
2679 	(void) printf("\n");
2680 }
2681 
2682 /*
2683  * Given a pool and a list of properties, print out all the properties according
2684  * to the described layout.
2685  */
2686 static void
2687 print_pool(zpool_handle_t *zhp, list_cbdata_t *cb)
2688 {
2689 	zprop_list_t *pl = cb->cb_proplist;
2690 	boolean_t first = B_TRUE;
2691 	char property[ZPOOL_MAXPROPLEN];
2692 	char *propstr;
2693 	boolean_t right_justify;
2694 	size_t width;
2695 
2696 	for (; pl != NULL; pl = pl->pl_next) {
2697 
2698 		width = pl->pl_width;
2699 		if (first && cb->cb_verbose) {
2700 			/*
2701 			 * Reset the width to accommodate the verbose listing
2702 			 * of devices.
2703 			 */
2704 			width = cb->cb_namewidth;
2705 		}
2706 
2707 		if (!first) {
2708 			if (cb->cb_scripted)
2709 				(void) printf("\t");
2710 			else
2711 				(void) printf("  ");
2712 		} else {
2713 			first = B_FALSE;
2714 		}
2715 
2716 		right_justify = B_FALSE;
2717 		if (pl->pl_prop != ZPROP_INVAL) {
2718 			if (zpool_get_prop(zhp, pl->pl_prop, property,
2719 			    sizeof (property), NULL, cb->cb_literal) != 0)
2720 				propstr = "-";
2721 			else
2722 				propstr = property;
2723 
2724 			right_justify = zpool_prop_align_right(pl->pl_prop);
2725 		} else if ((zpool_prop_feature(pl->pl_user_prop) ||
2726 		    zpool_prop_unsupported(pl->pl_user_prop)) &&
2727 		    zpool_prop_get_feature(zhp, pl->pl_user_prop, property,
2728 		    sizeof (property)) == 0) {
2729 			propstr = property;
2730 		} else {
2731 			propstr = "-";
2732 		}
2733 
2734 
2735 		/*
2736 		 * If this is being called in scripted mode, or if this is the
2737 		 * last column and it is left-justified, don't include a width
2738 		 * format specifier.
2739 		 */
2740 		if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
2741 			(void) printf("%s", propstr);
2742 		else if (right_justify)
2743 			(void) printf("%*s", width, propstr);
2744 		else
2745 			(void) printf("%-*s", width, propstr);
2746 	}
2747 
2748 	(void) printf("\n");
2749 }
2750 
2751 static void
2752 print_one_column(zpool_prop_t prop, uint64_t value, boolean_t scripted,
2753     boolean_t valid)
2754 {
2755 	char propval[64];
2756 	boolean_t fixed;
2757 	size_t width = zprop_width(prop, &fixed, ZFS_TYPE_POOL);
2758 
2759 	switch (prop) {
2760 	case ZPOOL_PROP_EXPANDSZ:
2761 		if (value == 0)
2762 			(void) strlcpy(propval, "-", sizeof (propval));
2763 		else
2764 			zfs_nicenum(value, propval, sizeof (propval));
2765 		break;
2766 	case ZPOOL_PROP_FRAGMENTATION:
2767 		if (value == ZFS_FRAG_INVALID) {
2768 			(void) strlcpy(propval, "-", sizeof (propval));
2769 		} else {
2770 			(void) snprintf(propval, sizeof (propval), "%llu%%",
2771 			    value);
2772 		}
2773 		break;
2774 	case ZPOOL_PROP_CAPACITY:
2775 		(void) snprintf(propval, sizeof (propval), "%llu%%", value);
2776 		break;
2777 	default:
2778 		zfs_nicenum(value, propval, sizeof (propval));
2779 	}
2780 
2781 	if (!valid)
2782 		(void) strlcpy(propval, "-", sizeof (propval));
2783 
2784 	if (scripted)
2785 		(void) printf("\t%s", propval);
2786 	else
2787 		(void) printf("  %*s", width, propval);
2788 }
2789 
2790 void
2791 print_list_stats(zpool_handle_t *zhp, const char *name, nvlist_t *nv,
2792     list_cbdata_t *cb, int depth)
2793 {
2794 	nvlist_t **child;
2795 	vdev_stat_t *vs;
2796 	uint_t c, children;
2797 	char *vname;
2798 	boolean_t scripted = cb->cb_scripted;
2799 	uint64_t islog = B_FALSE;
2800 	boolean_t haslog = B_FALSE;
2801 	char *dashes = "%-*s      -      -      -         -      -      -\n";
2802 
2803 	verify(nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
2804 	    (uint64_t **)&vs, &c) == 0);
2805 
2806 	if (name != NULL) {
2807 		boolean_t toplevel = (vs->vs_space != 0);
2808 		uint64_t cap;
2809 
2810 		if (scripted)
2811 			(void) printf("\t%s", name);
2812 		else if (strlen(name) + depth > cb->cb_namewidth)
2813 			(void) printf("%*s%s", depth, "", name);
2814 		else
2815 			(void) printf("%*s%s%*s", depth, "", name,
2816 			    (int)(cb->cb_namewidth - strlen(name) - depth), "");
2817 
2818 		/*
2819 		 * Print the properties for the individual vdevs. Some
2820 		 * properties are only applicable to toplevel vdevs. The
2821 		 * 'toplevel' boolean value is passed to the print_one_column()
2822 		 * to indicate that the value is valid.
2823 		 */
2824 		print_one_column(ZPOOL_PROP_SIZE, vs->vs_space, scripted,
2825 		    toplevel);
2826 		print_one_column(ZPOOL_PROP_ALLOCATED, vs->vs_alloc, scripted,
2827 		    toplevel);
2828 		print_one_column(ZPOOL_PROP_FREE, vs->vs_space - vs->vs_alloc,
2829 		    scripted, toplevel);
2830 		print_one_column(ZPOOL_PROP_EXPANDSZ, vs->vs_esize, scripted,
2831 		    B_TRUE);
2832 		print_one_column(ZPOOL_PROP_FRAGMENTATION,
2833 		    vs->vs_fragmentation, scripted,
2834 		    (vs->vs_fragmentation != ZFS_FRAG_INVALID && toplevel));
2835 		cap = (vs->vs_space == 0) ? 0 :
2836 		    (vs->vs_alloc * 100 / vs->vs_space);
2837 		print_one_column(ZPOOL_PROP_CAPACITY, cap, scripted, toplevel);
2838 		(void) printf("\n");
2839 	}
2840 
2841 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
2842 	    &child, &children) != 0)
2843 		return;
2844 
2845 	for (c = 0; c < children; c++) {
2846 		uint64_t ishole = B_FALSE;
2847 
2848 		if (nvlist_lookup_uint64(child[c],
2849 		    ZPOOL_CONFIG_IS_HOLE, &ishole) == 0 && ishole)
2850 			continue;
2851 
2852 		if (nvlist_lookup_uint64(child[c],
2853 		    ZPOOL_CONFIG_IS_LOG, &islog) == 0 && islog) {
2854 			haslog = B_TRUE;
2855 			continue;
2856 		}
2857 
2858 		vname = zpool_vdev_name(g_zfs, zhp, child[c], B_FALSE);
2859 		print_list_stats(zhp, vname, child[c], cb, depth + 2);
2860 		free(vname);
2861 	}
2862 
2863 	if (haslog == B_TRUE) {
2864 		/* LINTED E_SEC_PRINTF_VAR_FMT */
2865 		(void) printf(dashes, cb->cb_namewidth, "log");
2866 		for (c = 0; c < children; c++) {
2867 			if (nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
2868 			    &islog) != 0 || !islog)
2869 				continue;
2870 			vname = zpool_vdev_name(g_zfs, zhp, child[c], B_FALSE);
2871 			print_list_stats(zhp, vname, child[c], cb, depth + 2);
2872 			free(vname);
2873 		}
2874 	}
2875 
2876 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
2877 	    &child, &children) == 0 && children > 0) {
2878 		/* LINTED E_SEC_PRINTF_VAR_FMT */
2879 		(void) printf(dashes, cb->cb_namewidth, "cache");
2880 		for (c = 0; c < children; c++) {
2881 			vname = zpool_vdev_name(g_zfs, zhp, child[c], B_FALSE);
2882 			print_list_stats(zhp, vname, child[c], cb, depth + 2);
2883 			free(vname);
2884 		}
2885 	}
2886 
2887 	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, &child,
2888 	    &children) == 0 && children > 0) {
2889 		/* LINTED E_SEC_PRINTF_VAR_FMT */
2890 		(void) printf(dashes, cb->cb_namewidth, "spare");
2891 		for (c = 0; c < children; c++) {
2892 			vname = zpool_vdev_name(g_zfs, zhp, child[c], B_FALSE);
2893 			print_list_stats(zhp, vname, child[c], cb, depth + 2);
2894 			free(vname);
2895 		}
2896 	}
2897 }
2898 
2899 
2900 /*
2901  * Generic callback function to list a pool.
2902  */
2903 int
2904 list_callback(zpool_handle_t *zhp, void *data)
2905 {
2906 	list_cbdata_t *cbp = data;
2907 	nvlist_t *config;
2908 	nvlist_t *nvroot;
2909 
2910 	config = zpool_get_config(zhp, NULL);
2911 
2912 	print_pool(zhp, cbp);
2913 	if (!cbp->cb_verbose)
2914 		return (0);
2915 
2916 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2917 	    &nvroot) == 0);
2918 	print_list_stats(zhp, NULL, nvroot, cbp, 0);
2919 
2920 	return (0);
2921 }
2922 
2923 /*
2924  * zpool list [-Hp] [-o prop[,prop]*] [-T d|u] [pool] ... [interval [count]]
2925  *
2926  *	-H	Scripted mode.  Don't display headers, and separate properties
2927  *		by a single tab.
2928  *	-o	List of properties to display.  Defaults to
2929  *		"name,size,allocated,free,expandsize,fragmentation,capacity,"
2930  *		"dedupratio,health,altroot"
2931  * 	-p	Diplay values in parsable (exact) format.
2932  *	-T	Display a timestamp in date(1) or Unix format
2933  *
2934  * List all pools in the system, whether or not they're healthy.  Output space
2935  * statistics for each one, as well as health status summary.
2936  */
2937 int
2938 zpool_do_list(int argc, char **argv)
2939 {
2940 	int c;
2941 	int ret;
2942 	list_cbdata_t cb = { 0 };
2943 	static char default_props[] =
2944 	    "name,size,allocated,free,expandsize,fragmentation,capacity,"
2945 	    "dedupratio,health,altroot";
2946 	char *props = default_props;
2947 	unsigned long interval = 0, count = 0;
2948 	zpool_list_t *list;
2949 	boolean_t first = B_TRUE;
2950 
2951 	/* check options */
2952 	while ((c = getopt(argc, argv, ":Ho:pT:v")) != -1) {
2953 		switch (c) {
2954 		case 'H':
2955 			cb.cb_scripted = B_TRUE;
2956 			break;
2957 		case 'o':
2958 			props = optarg;
2959 			break;
2960 		case 'p':
2961 			cb.cb_literal = B_TRUE;
2962 			break;
2963 		case 'T':
2964 			get_timestamp_arg(*optarg);
2965 			break;
2966 		case 'v':
2967 			cb.cb_verbose = B_TRUE;
2968 			break;
2969 		case ':':
2970 			(void) fprintf(stderr, gettext("missing argument for "
2971 			    "'%c' option\n"), optopt);
2972 			usage(B_FALSE);
2973 			break;
2974 		case '?':
2975 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
2976 			    optopt);
2977 			usage(B_FALSE);
2978 		}
2979 	}
2980 
2981 	argc -= optind;
2982 	argv += optind;
2983 
2984 	get_interval_count(&argc, argv, &interval, &count);
2985 
2986 	if (zprop_get_list(g_zfs, props, &cb.cb_proplist, ZFS_TYPE_POOL) != 0)
2987 		usage(B_FALSE);
2988 
2989 	for (;;) {
2990 		if ((list = pool_list_get(argc, argv, &cb.cb_proplist,
2991 		    &ret)) == NULL)
2992 			return (1);
2993 
2994 		if (pool_list_count(list) == 0)
2995 			break;
2996 
2997 		cb.cb_namewidth = 0;
2998 		(void) pool_list_iter(list, B_FALSE, get_namewidth, &cb);
2999 
3000 		if (timestamp_fmt != NODATE)
3001 			print_timestamp(timestamp_fmt);
3002 
3003 		if (!cb.cb_scripted && (first || cb.cb_verbose)) {
3004 			print_header(&cb);
3005 			first = B_FALSE;
3006 		}
3007 		ret = pool_list_iter(list, B_TRUE, list_callback, &cb);
3008 
3009 		if (interval == 0)
3010 			break;
3011 
3012 		if (count != 0 && --count == 0)
3013 			break;
3014 
3015 		pool_list_free(list);
3016 		(void) sleep(interval);
3017 	}
3018 
3019 	if (argc == 0 && !cb.cb_scripted && pool_list_count(list) == 0) {
3020 		(void) printf(gettext("no pools available\n"));
3021 		ret = 0;
3022 	}
3023 
3024 	pool_list_free(list);
3025 	zprop_free_list(cb.cb_proplist);
3026 	return (ret);
3027 }
3028 
3029 static int
3030 zpool_do_attach_or_replace(int argc, char **argv, int replacing)
3031 {
3032 	boolean_t force = B_FALSE;
3033 	int c;
3034 	nvlist_t *nvroot;
3035 	char *poolname, *old_disk, *new_disk;
3036 	zpool_handle_t *zhp;
3037 	int ret;
3038 
3039 	/* check options */
3040 	while ((c = getopt(argc, argv, "f")) != -1) {
3041 		switch (c) {
3042 		case 'f':
3043 			force = B_TRUE;
3044 			break;
3045 		case '?':
3046 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3047 			    optopt);
3048 			usage(B_FALSE);
3049 		}
3050 	}
3051 
3052 	argc -= optind;
3053 	argv += optind;
3054 
3055 	/* get pool name and check number of arguments */
3056 	if (argc < 1) {
3057 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
3058 		usage(B_FALSE);
3059 	}
3060 
3061 	poolname = argv[0];
3062 
3063 	if (argc < 2) {
3064 		(void) fprintf(stderr,
3065 		    gettext("missing <device> specification\n"));
3066 		usage(B_FALSE);
3067 	}
3068 
3069 	old_disk = argv[1];
3070 
3071 	if (argc < 3) {
3072 		if (!replacing) {
3073 			(void) fprintf(stderr,
3074 			    gettext("missing <new_device> specification\n"));
3075 			usage(B_FALSE);
3076 		}
3077 		new_disk = old_disk;
3078 		argc -= 1;
3079 		argv += 1;
3080 	} else {
3081 		new_disk = argv[2];
3082 		argc -= 2;
3083 		argv += 2;
3084 	}
3085 
3086 	if (argc > 1) {
3087 		(void) fprintf(stderr, gettext("too many arguments\n"));
3088 		usage(B_FALSE);
3089 	}
3090 
3091 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3092 		return (1);
3093 
3094 	if (zpool_get_config(zhp, NULL) == NULL) {
3095 		(void) fprintf(stderr, gettext("pool '%s' is unavailable\n"),
3096 		    poolname);
3097 		zpool_close(zhp);
3098 		return (1);
3099 	}
3100 
3101 	nvroot = make_root_vdev(zhp, force, B_FALSE, replacing, B_FALSE,
3102 	    argc, argv);
3103 	if (nvroot == NULL) {
3104 		zpool_close(zhp);
3105 		return (1);
3106 	}
3107 
3108 	ret = zpool_vdev_attach(zhp, old_disk, new_disk, nvroot, replacing);
3109 
3110 	nvlist_free(nvroot);
3111 	zpool_close(zhp);
3112 
3113 	return (ret);
3114 }
3115 
3116 /*
3117  * zpool replace [-f] <pool> <device> <new_device>
3118  *
3119  *	-f	Force attach, even if <new_device> appears to be in use.
3120  *
3121  * Replace <device> with <new_device>.
3122  */
3123 /* ARGSUSED */
3124 int
3125 zpool_do_replace(int argc, char **argv)
3126 {
3127 	return (zpool_do_attach_or_replace(argc, argv, B_TRUE));
3128 }
3129 
3130 /*
3131  * zpool attach [-f] <pool> <device> <new_device>
3132  *
3133  *	-f	Force attach, even if <new_device> appears to be in use.
3134  *
3135  * Attach <new_device> to the mirror containing <device>.  If <device> is not
3136  * part of a mirror, then <device> will be transformed into a mirror of
3137  * <device> and <new_device>.  In either case, <new_device> will begin life
3138  * with a DTL of [0, now], and will immediately begin to resilver itself.
3139  */
3140 int
3141 zpool_do_attach(int argc, char **argv)
3142 {
3143 	return (zpool_do_attach_or_replace(argc, argv, B_FALSE));
3144 }
3145 
3146 /*
3147  * zpool detach [-f] <pool> <device>
3148  *
3149  *	-f	Force detach of <device>, even if DTLs argue against it
3150  *		(not supported yet)
3151  *
3152  * Detach a device from a mirror.  The operation will be refused if <device>
3153  * is the last device in the mirror, or if the DTLs indicate that this device
3154  * has the only valid copy of some data.
3155  */
3156 /* ARGSUSED */
3157 int
3158 zpool_do_detach(int argc, char **argv)
3159 {
3160 	int c;
3161 	char *poolname, *path;
3162 	zpool_handle_t *zhp;
3163 	int ret;
3164 
3165 	/* check options */
3166 	while ((c = getopt(argc, argv, "f")) != -1) {
3167 		switch (c) {
3168 		case 'f':
3169 		case '?':
3170 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3171 			    optopt);
3172 			usage(B_FALSE);
3173 		}
3174 	}
3175 
3176 	argc -= optind;
3177 	argv += optind;
3178 
3179 	/* get pool name and check number of arguments */
3180 	if (argc < 1) {
3181 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
3182 		usage(B_FALSE);
3183 	}
3184 
3185 	if (argc < 2) {
3186 		(void) fprintf(stderr,
3187 		    gettext("missing <device> specification\n"));
3188 		usage(B_FALSE);
3189 	}
3190 
3191 	poolname = argv[0];
3192 	path = argv[1];
3193 
3194 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3195 		return (1);
3196 
3197 	ret = zpool_vdev_detach(zhp, path);
3198 
3199 	zpool_close(zhp);
3200 
3201 	return (ret);
3202 }
3203 
3204 /*
3205  * zpool split [-n] [-o prop=val] ...
3206  *		[-o mntopt] ...
3207  *		[-R altroot] <pool> <newpool> [<device> ...]
3208  *
3209  *	-n	Do not split the pool, but display the resulting layout if
3210  *		it were to be split.
3211  *	-o	Set property=value, or set mount options.
3212  *	-R	Mount the split-off pool under an alternate root.
3213  *
3214  * Splits the named pool and gives it the new pool name.  Devices to be split
3215  * off may be listed, provided that no more than one device is specified
3216  * per top-level vdev mirror.  The newly split pool is left in an exported
3217  * state unless -R is specified.
3218  *
3219  * Restrictions: the top-level of the pool pool must only be made up of
3220  * mirrors; all devices in the pool must be healthy; no device may be
3221  * undergoing a resilvering operation.
3222  */
3223 int
3224 zpool_do_split(int argc, char **argv)
3225 {
3226 	char *srcpool, *newpool, *propval;
3227 	char *mntopts = NULL;
3228 	splitflags_t flags;
3229 	int c, ret = 0;
3230 	zpool_handle_t *zhp;
3231 	nvlist_t *config, *props = NULL;
3232 
3233 	flags.dryrun = B_FALSE;
3234 	flags.import = B_FALSE;
3235 
3236 	/* check options */
3237 	while ((c = getopt(argc, argv, ":R:no:")) != -1) {
3238 		switch (c) {
3239 		case 'R':
3240 			flags.import = B_TRUE;
3241 			if (add_prop_list(
3242 			    zpool_prop_to_name(ZPOOL_PROP_ALTROOT), optarg,
3243 			    &props, B_TRUE) != 0) {
3244 				nvlist_free(props);
3245 				usage(B_FALSE);
3246 			}
3247 			break;
3248 		case 'n':
3249 			flags.dryrun = B_TRUE;
3250 			break;
3251 		case 'o':
3252 			if ((propval = strchr(optarg, '=')) != NULL) {
3253 				*propval = '\0';
3254 				propval++;
3255 				if (add_prop_list(optarg, propval,
3256 				    &props, B_TRUE) != 0) {
3257 					nvlist_free(props);
3258 					usage(B_FALSE);
3259 				}
3260 			} else {
3261 				mntopts = optarg;
3262 			}
3263 			break;
3264 		case ':':
3265 			(void) fprintf(stderr, gettext("missing argument for "
3266 			    "'%c' option\n"), optopt);
3267 			usage(B_FALSE);
3268 			break;
3269 		case '?':
3270 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3271 			    optopt);
3272 			usage(B_FALSE);
3273 			break;
3274 		}
3275 	}
3276 
3277 	if (!flags.import && mntopts != NULL) {
3278 		(void) fprintf(stderr, gettext("setting mntopts is only "
3279 		    "valid when importing the pool\n"));
3280 		usage(B_FALSE);
3281 	}
3282 
3283 	argc -= optind;
3284 	argv += optind;
3285 
3286 	if (argc < 1) {
3287 		(void) fprintf(stderr, gettext("Missing pool name\n"));
3288 		usage(B_FALSE);
3289 	}
3290 	if (argc < 2) {
3291 		(void) fprintf(stderr, gettext("Missing new pool name\n"));
3292 		usage(B_FALSE);
3293 	}
3294 
3295 	srcpool = argv[0];
3296 	newpool = argv[1];
3297 
3298 	argc -= 2;
3299 	argv += 2;
3300 
3301 	if ((zhp = zpool_open(g_zfs, srcpool)) == NULL)
3302 		return (1);
3303 
3304 	config = split_mirror_vdev(zhp, newpool, props, flags, argc, argv);
3305 	if (config == NULL) {
3306 		ret = 1;
3307 	} else {
3308 		if (flags.dryrun) {
3309 			(void) printf(gettext("would create '%s' with the "
3310 			    "following layout:\n\n"), newpool);
3311 			print_vdev_tree(NULL, newpool, config, 0, B_FALSE);
3312 		}
3313 		nvlist_free(config);
3314 	}
3315 
3316 	zpool_close(zhp);
3317 
3318 	if (ret != 0 || flags.dryrun || !flags.import)
3319 		return (ret);
3320 
3321 	/*
3322 	 * The split was successful. Now we need to open the new
3323 	 * pool and import it.
3324 	 */
3325 	if ((zhp = zpool_open_canfail(g_zfs, newpool)) == NULL)
3326 		return (1);
3327 	if (zpool_get_state(zhp) != POOL_STATE_UNAVAIL &&
3328 	    zpool_enable_datasets(zhp, mntopts, 0) != 0) {
3329 		ret = 1;
3330 		(void) fprintf(stderr, gettext("Split was successful, but "
3331 		    "the datasets could not all be mounted\n"));
3332 		(void) fprintf(stderr, gettext("Try doing '%s' with a "
3333 		    "different altroot\n"), "zpool import");
3334 	}
3335 	zpool_close(zhp);
3336 
3337 	return (ret);
3338 }
3339 
3340 
3341 
3342 /*
3343  * zpool online <pool> <device> ...
3344  */
3345 int
3346 zpool_do_online(int argc, char **argv)
3347 {
3348 	int c, i;
3349 	char *poolname;
3350 	zpool_handle_t *zhp;
3351 	int ret = 0;
3352 	vdev_state_t newstate;
3353 	int flags = 0;
3354 
3355 	/* check options */
3356 	while ((c = getopt(argc, argv, "et")) != -1) {
3357 		switch (c) {
3358 		case 'e':
3359 			flags |= ZFS_ONLINE_EXPAND;
3360 			break;
3361 		case 't':
3362 		case '?':
3363 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3364 			    optopt);
3365 			usage(B_FALSE);
3366 		}
3367 	}
3368 
3369 	argc -= optind;
3370 	argv += optind;
3371 
3372 	/* get pool name and check number of arguments */
3373 	if (argc < 1) {
3374 		(void) fprintf(stderr, gettext("missing pool name\n"));
3375 		usage(B_FALSE);
3376 	}
3377 	if (argc < 2) {
3378 		(void) fprintf(stderr, gettext("missing device name\n"));
3379 		usage(B_FALSE);
3380 	}
3381 
3382 	poolname = argv[0];
3383 
3384 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3385 		return (1);
3386 
3387 	for (i = 1; i < argc; i++) {
3388 		if (zpool_vdev_online(zhp, argv[i], flags, &newstate) == 0) {
3389 			if (newstate != VDEV_STATE_HEALTHY) {
3390 				(void) printf(gettext("warning: device '%s' "
3391 				    "onlined, but remains in faulted state\n"),
3392 				    argv[i]);
3393 				if (newstate == VDEV_STATE_FAULTED)
3394 					(void) printf(gettext("use 'zpool "
3395 					    "clear' to restore a faulted "
3396 					    "device\n"));
3397 				else
3398 					(void) printf(gettext("use 'zpool "
3399 					    "replace' to replace devices "
3400 					    "that are no longer present\n"));
3401 			}
3402 		} else {
3403 			ret = 1;
3404 		}
3405 	}
3406 
3407 	zpool_close(zhp);
3408 
3409 	return (ret);
3410 }
3411 
3412 /*
3413  * zpool offline [-ft] <pool> <device> ...
3414  *
3415  *	-f	Force the device into the offline state, even if doing
3416  *		so would appear to compromise pool availability.
3417  *		(not supported yet)
3418  *
3419  *	-t	Only take the device off-line temporarily.  The offline
3420  *		state will not be persistent across reboots.
3421  */
3422 /* ARGSUSED */
3423 int
3424 zpool_do_offline(int argc, char **argv)
3425 {
3426 	int c, i;
3427 	char *poolname;
3428 	zpool_handle_t *zhp;
3429 	int ret = 0;
3430 	boolean_t istmp = B_FALSE;
3431 
3432 	/* check options */
3433 	while ((c = getopt(argc, argv, "ft")) != -1) {
3434 		switch (c) {
3435 		case 't':
3436 			istmp = B_TRUE;
3437 			break;
3438 		case 'f':
3439 		case '?':
3440 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3441 			    optopt);
3442 			usage(B_FALSE);
3443 		}
3444 	}
3445 
3446 	argc -= optind;
3447 	argv += optind;
3448 
3449 	/* get pool name and check number of arguments */
3450 	if (argc < 1) {
3451 		(void) fprintf(stderr, gettext("missing pool name\n"));
3452 		usage(B_FALSE);
3453 	}
3454 	if (argc < 2) {
3455 		(void) fprintf(stderr, gettext("missing device name\n"));
3456 		usage(B_FALSE);
3457 	}
3458 
3459 	poolname = argv[0];
3460 
3461 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3462 		return (1);
3463 
3464 	for (i = 1; i < argc; i++) {
3465 		if (zpool_vdev_offline(zhp, argv[i], istmp) != 0)
3466 			ret = 1;
3467 	}
3468 
3469 	zpool_close(zhp);
3470 
3471 	return (ret);
3472 }
3473 
3474 /*
3475  * zpool clear <pool> [device]
3476  *
3477  * Clear all errors associated with a pool or a particular device.
3478  */
3479 int
3480 zpool_do_clear(int argc, char **argv)
3481 {
3482 	int c;
3483 	int ret = 0;
3484 	boolean_t dryrun = B_FALSE;
3485 	boolean_t do_rewind = B_FALSE;
3486 	boolean_t xtreme_rewind = B_FALSE;
3487 	uint32_t rewind_policy = ZPOOL_NO_REWIND;
3488 	nvlist_t *policy = NULL;
3489 	zpool_handle_t *zhp;
3490 	char *pool, *device;
3491 
3492 	/* check options */
3493 	while ((c = getopt(argc, argv, "FnX")) != -1) {
3494 		switch (c) {
3495 		case 'F':
3496 			do_rewind = B_TRUE;
3497 			break;
3498 		case 'n':
3499 			dryrun = B_TRUE;
3500 			break;
3501 		case 'X':
3502 			xtreme_rewind = B_TRUE;
3503 			break;
3504 		case '?':
3505 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3506 			    optopt);
3507 			usage(B_FALSE);
3508 		}
3509 	}
3510 
3511 	argc -= optind;
3512 	argv += optind;
3513 
3514 	if (argc < 1) {
3515 		(void) fprintf(stderr, gettext("missing pool name\n"));
3516 		usage(B_FALSE);
3517 	}
3518 
3519 	if (argc > 2) {
3520 		(void) fprintf(stderr, gettext("too many arguments\n"));
3521 		usage(B_FALSE);
3522 	}
3523 
3524 	if ((dryrun || xtreme_rewind) && !do_rewind) {
3525 		(void) fprintf(stderr,
3526 		    gettext("-n or -X only meaningful with -F\n"));
3527 		usage(B_FALSE);
3528 	}
3529 	if (dryrun)
3530 		rewind_policy = ZPOOL_TRY_REWIND;
3531 	else if (do_rewind)
3532 		rewind_policy = ZPOOL_DO_REWIND;
3533 	if (xtreme_rewind)
3534 		rewind_policy |= ZPOOL_EXTREME_REWIND;
3535 
3536 	/* In future, further rewind policy choices can be passed along here */
3537 	if (nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) != 0 ||
3538 	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind_policy) != 0)
3539 		return (1);
3540 
3541 	pool = argv[0];
3542 	device = argc == 2 ? argv[1] : NULL;
3543 
3544 	if ((zhp = zpool_open_canfail(g_zfs, pool)) == NULL) {
3545 		nvlist_free(policy);
3546 		return (1);
3547 	}
3548 
3549 	if (zpool_clear(zhp, device, policy) != 0)
3550 		ret = 1;
3551 
3552 	zpool_close(zhp);
3553 
3554 	nvlist_free(policy);
3555 
3556 	return (ret);
3557 }
3558 
3559 /*
3560  * zpool reguid <pool>
3561  */
3562 int
3563 zpool_do_reguid(int argc, char **argv)
3564 {
3565 	int c;
3566 	char *poolname;
3567 	zpool_handle_t *zhp;
3568 	int ret = 0;
3569 
3570 	/* check options */
3571 	while ((c = getopt(argc, argv, "")) != -1) {
3572 		switch (c) {
3573 		case '?':
3574 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3575 			    optopt);
3576 			usage(B_FALSE);
3577 		}
3578 	}
3579 
3580 	argc -= optind;
3581 	argv += optind;
3582 
3583 	/* get pool name and check number of arguments */
3584 	if (argc < 1) {
3585 		(void) fprintf(stderr, gettext("missing pool name\n"));
3586 		usage(B_FALSE);
3587 	}
3588 
3589 	if (argc > 1) {
3590 		(void) fprintf(stderr, gettext("too many arguments\n"));
3591 		usage(B_FALSE);
3592 	}
3593 
3594 	poolname = argv[0];
3595 	if ((zhp = zpool_open(g_zfs, poolname)) == NULL)
3596 		return (1);
3597 
3598 	ret = zpool_reguid(zhp);
3599 
3600 	zpool_close(zhp);
3601 	return (ret);
3602 }
3603 
3604 
3605 /*
3606  * zpool reopen <pool>
3607  *
3608  * Reopen the pool so that the kernel can update the sizes of all vdevs.
3609  */
3610 int
3611 zpool_do_reopen(int argc, char **argv)
3612 {
3613 	int c;
3614 	int ret = 0;
3615 	zpool_handle_t *zhp;
3616 	char *pool;
3617 
3618 	/* check options */
3619 	while ((c = getopt(argc, argv, "")) != -1) {
3620 		switch (c) {
3621 		case '?':
3622 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3623 			    optopt);
3624 			usage(B_FALSE);
3625 		}
3626 	}
3627 
3628 	argc--;
3629 	argv++;
3630 
3631 	if (argc < 1) {
3632 		(void) fprintf(stderr, gettext("missing pool name\n"));
3633 		usage(B_FALSE);
3634 	}
3635 
3636 	if (argc > 1) {
3637 		(void) fprintf(stderr, gettext("too many arguments\n"));
3638 		usage(B_FALSE);
3639 	}
3640 
3641 	pool = argv[0];
3642 	if ((zhp = zpool_open_canfail(g_zfs, pool)) == NULL)
3643 		return (1);
3644 
3645 	ret = zpool_reopen(zhp);
3646 	zpool_close(zhp);
3647 	return (ret);
3648 }
3649 
3650 typedef struct scrub_cbdata {
3651 	int	cb_type;
3652 	int	cb_argc;
3653 	char	**cb_argv;
3654 } scrub_cbdata_t;
3655 
3656 int
3657 scrub_callback(zpool_handle_t *zhp, void *data)
3658 {
3659 	scrub_cbdata_t *cb = data;
3660 	int err;
3661 
3662 	/*
3663 	 * Ignore faulted pools.
3664 	 */
3665 	if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) {
3666 		(void) fprintf(stderr, gettext("cannot scrub '%s': pool is "
3667 		    "currently unavailable\n"), zpool_get_name(zhp));
3668 		return (1);
3669 	}
3670 
3671 	err = zpool_scan(zhp, cb->cb_type);
3672 
3673 	return (err != 0);
3674 }
3675 
3676 /*
3677  * zpool scrub [-s] <pool> ...
3678  *
3679  *	-s	Stop.  Stops any in-progress scrub.
3680  */
3681 int
3682 zpool_do_scrub(int argc, char **argv)
3683 {
3684 	int c;
3685 	scrub_cbdata_t cb;
3686 
3687 	cb.cb_type = POOL_SCAN_SCRUB;
3688 
3689 	/* check options */
3690 	while ((c = getopt(argc, argv, "s")) != -1) {
3691 		switch (c) {
3692 		case 's':
3693 			cb.cb_type = POOL_SCAN_NONE;
3694 			break;
3695 		case '?':
3696 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
3697 			    optopt);
3698 			usage(B_FALSE);
3699 		}
3700 	}
3701 
3702 	cb.cb_argc = argc;
3703 	cb.cb_argv = argv;
3704 	argc -= optind;
3705 	argv += optind;
3706 
3707 	if (argc < 1) {
3708 		(void) fprintf(stderr, gettext("missing pool name argument\n"));
3709 		usage(B_FALSE);
3710 	}
3711 
3712 	return (for_each_pool(argc, argv, B_TRUE, NULL, scrub_callback, &cb));
3713 }
3714 
3715 typedef struct status_cbdata {
3716 	int		cb_count;
3717 	boolean_t	cb_allpools;
3718 	boolean_t	cb_verbose;
3719 	boolean_t	cb_explain;
3720 	boolean_t	cb_first;
3721 	boolean_t	cb_dedup_stats;
3722 } status_cbdata_t;
3723 
3724 /*
3725  * Print out detailed scrub status.
3726  */
3727 void
3728 print_scan_status(pool_scan_stat_t *ps)
3729 {
3730 	time_t start, end;
3731 	uint64_t elapsed, mins_left, hours_left;
3732 	uint64_t pass_exam, examined, total;
3733 	uint_t rate;
3734 	double fraction_done;
3735 	char processed_buf[7], examined_buf[7], total_buf[7], rate_buf[7];
3736 
3737 	(void) printf(gettext("  scan: "));
3738 
3739 	/* If there's never been a scan, there's not much to say. */
3740 	if (ps == NULL || ps->pss_func == POOL_SCAN_NONE ||
3741 	    ps->pss_func >= POOL_SCAN_FUNCS) {
3742 		(void) printf(gettext("none requested\n"));
3743 		return;
3744 	}
3745 
3746 	start = ps->pss_start_time;
3747 	end = ps->pss_end_time;
3748 	zfs_nicenum(ps->pss_processed, processed_buf, sizeof (processed_buf));
3749 
3750 	assert(ps->pss_func == POOL_SCAN_SCRUB ||
3751 	    ps->pss_func == POOL_SCAN_RESILVER);
3752 	/*
3753 	 * Scan is finished or canceled.
3754 	 */
3755 	if (ps->pss_state == DSS_FINISHED) {
3756 		uint64_t minutes_taken = (end - start) / 60;
3757 		char *fmt = NULL;
3758 
3759 		if (ps->pss_func == POOL_SCAN_SCRUB) {
3760 			fmt = gettext("scrub repaired %s in %lluh%um with "
3761 			    "%llu errors on %s");
3762 		} else if (ps->pss_func == POOL_SCAN_RESILVER) {
3763 			fmt = gettext("resilvered %s in %lluh%um with "
3764 			    "%llu errors on %s");
3765 		}
3766 		/* LINTED */
3767 		(void) printf(fmt, processed_buf,
3768 		    (u_longlong_t)(minutes_taken / 60),
3769 		    (uint_t)(minutes_taken % 60),
3770 		    (u_longlong_t)ps->pss_errors,
3771 		    ctime((time_t *)&end));
3772 		return;
3773 	} else if (ps->pss_state == DSS_CANCELED) {
3774 		if (ps->pss_func == POOL_SCAN_SCRUB) {
3775 			(void) printf(gettext("scrub canceled on %s"),
3776 			    ctime(&end));
3777 		} else if (ps->pss_func == POOL_SCAN_RESILVER) {
3778 			(void) printf(gettext("resilver canceled on %s"),
3779 			    ctime(&end));
3780 		}
3781 		return;
3782 	}
3783 
3784 	assert(ps->pss_state == DSS_SCANNING);
3785 
3786 	/*
3787 	 * Scan is in progress.
3788 	 */
3789 	if (ps->pss_func == POOL_SCAN_SCRUB) {
3790 		(void) printf(gettext("scrub in progress since %s"),
3791 		    ctime(&start));
3792 	} else if (ps->pss_func == POOL_SCAN_RESILVER) {
3793 		(void) printf(gettext("resilver in progress since %s"),
3794 		    ctime(&start));
3795 	}
3796 
3797 	examined = ps->pss_examined ? ps->pss_examined : 1;
3798 	total = ps->pss_to_examine;
3799 	fraction_done = (double)examined / total;
3800 
3801 	/* elapsed time for this pass */
3802 	elapsed = time(NULL) - ps->pss_pass_start;
3803 	elapsed = elapsed ? elapsed : 1;
3804 	pass_exam = ps->pss_pass_exam ? ps->pss_pass_exam : 1;
3805 	rate = pass_exam / elapsed;
3806 	rate = rate ? rate : 1;
3807 	mins_left = ((total - examined) / rate) / 60;
3808 	hours_left = mins_left / 60;
3809 
3810 	zfs_nicenum(examined, examined_buf, sizeof (examined_buf));
3811 	zfs_nicenum(total, total_buf, sizeof (total_buf));
3812 	zfs_nicenum(rate, rate_buf, sizeof (rate_buf));
3813 
3814 	/*
3815 	 * do not print estimated time if hours_left is more than 30 days
3816 	 */
3817 	(void) printf(gettext("    %s scanned out of %s at %s/s"),
3818 	    examined_buf, total_buf, rate_buf);
3819 	if (hours_left < (30 * 24)) {
3820 		(void) printf(gettext(", %lluh%um to go\n"),
3821 		    (u_longlong_t)hours_left, (uint_t)(mins_left % 60));
3822 	} else {
3823 		(void) printf(gettext(
3824 		    ", (scan is slow, no estimated time)\n"));
3825 	}
3826 
3827 	if (ps->pss_func == POOL_SCAN_RESILVER) {
3828 		(void) printf(gettext("    %s resilvered, %.2f%% done\n"),
3829 		    processed_buf, 100 * fraction_done);
3830 	} else if (ps->pss_func == POOL_SCAN_SCRUB) {
3831 		(void) printf(gettext("    %s repaired, %.2f%% done\n"),
3832 		    processed_buf, 100 * fraction_done);
3833 	}
3834 }
3835 
3836 static void
3837 print_error_log(zpool_handle_t *zhp)
3838 {
3839 	nvlist_t *nverrlist = NULL;
3840 	nvpair_t *elem;
3841 	char *pathname;
3842 	size_t len = MAXPATHLEN * 2;
3843 
3844 	if (zpool_get_errlog(zhp, &nverrlist) != 0) {
3845 		(void) printf("errors: List of errors unavailable "
3846 		    "(insufficient privileges)\n");
3847 		return;
3848 	}
3849 
3850 	(void) printf("errors: Permanent errors have been "
3851 	    "detected in the following files:\n\n");
3852 
3853 	pathname = safe_malloc(len);
3854 	elem = NULL;
3855 	while ((elem = nvlist_next_nvpair(nverrlist, elem)) != NULL) {
3856 		nvlist_t *nv;
3857 		uint64_t dsobj, obj;
3858 
3859 		verify(nvpair_value_nvlist(elem, &nv) == 0);
3860 		verify(nvlist_lookup_uint64(nv, ZPOOL_ERR_DATASET,
3861 		    &dsobj) == 0);
3862 		verify(nvlist_lookup_uint64(nv, ZPOOL_ERR_OBJECT,
3863 		    &obj) == 0);
3864 		zpool_obj_to_path(zhp, dsobj, obj, pathname, len);
3865 		(void) printf("%7s %s\n", "", pathname);
3866 	}
3867 	free(pathname);
3868 	nvlist_free(nverrlist);
3869 }
3870 
3871 static void
3872 print_spares(zpool_handle_t *zhp, nvlist_t **spares, uint_t nspares,
3873     int namewidth)
3874 {
3875 	uint_t i;
3876 	char *name;
3877 
3878 	if (nspares == 0)
3879 		return;
3880 
3881 	(void) printf(gettext("\tspares\n"));
3882 
3883 	for (i = 0; i < nspares; i++) {
3884 		name = zpool_vdev_name(g_zfs, zhp, spares[i], B_FALSE);
3885 		print_status_config(zhp, name, spares[i],
3886 		    namewidth, 2, B_TRUE);
3887 		free(name);
3888 	}
3889 }
3890 
3891 static void
3892 print_l2cache(zpool_handle_t *zhp, nvlist_t **l2cache, uint_t nl2cache,
3893     int namewidth)
3894 {
3895 	uint_t i;
3896 	char *name;
3897 
3898 	if (nl2cache == 0)
3899 		return;
3900 
3901 	(void) printf(gettext("\tcache\n"));
3902 
3903 	for (i = 0; i < nl2cache; i++) {
3904 		name = zpool_vdev_name(g_zfs, zhp, l2cache[i], B_FALSE);
3905 		print_status_config(zhp, name, l2cache[i],
3906 		    namewidth, 2, B_FALSE);
3907 		free(name);
3908 	}
3909 }
3910 
3911 static void
3912 print_dedup_stats(nvlist_t *config)
3913 {
3914 	ddt_histogram_t *ddh;
3915 	ddt_stat_t *dds;
3916 	ddt_object_t *ddo;
3917 	uint_t c;
3918 
3919 	/*
3920 	 * If the pool was faulted then we may not have been able to
3921 	 * obtain the config. Otherwise, if we have anything in the dedup
3922 	 * table continue processing the stats.
3923 	 */
3924 	if (nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_DDT_OBJ_STATS,
3925 	    (uint64_t **)&ddo, &c) != 0)
3926 		return;
3927 
3928 	(void) printf("\n");
3929 	(void) printf(gettext(" dedup: "));
3930 	if (ddo->ddo_count == 0) {
3931 		(void) printf(gettext("no DDT entries\n"));
3932 		return;
3933 	}
3934 
3935 	(void) printf("DDT entries %llu, size %llu on disk, %llu in core\n",
3936 	    (u_longlong_t)ddo->ddo_count,
3937 	    (u_longlong_t)ddo->ddo_dspace,
3938 	    (u_longlong_t)ddo->ddo_mspace);
3939 
3940 	verify(nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_DDT_STATS,
3941 	    (uint64_t **)&dds, &c) == 0);
3942 	verify(nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_DDT_HISTOGRAM,
3943 	    (uint64_t **)&ddh, &c) == 0);
3944 	zpool_dump_ddt(dds, ddh);
3945 }
3946 
3947 /*
3948  * Display a summary of pool status.  Displays a summary such as:
3949  *
3950  *        pool: tank
3951  *	status: DEGRADED
3952  *	reason: One or more devices ...
3953  *         see: http://illumos.org/msg/ZFS-xxxx-01
3954  *	config:
3955  *		mirror		DEGRADED
3956  *                c1t0d0	OK
3957  *                c2t0d0	UNAVAIL
3958  *
3959  * When given the '-v' option, we print out the complete config.  If the '-e'
3960  * option is specified, then we print out error rate information as well.
3961  */
3962 int
3963 status_callback(zpool_handle_t *zhp, void *data)
3964 {
3965 	status_cbdata_t *cbp = data;
3966 	nvlist_t *config, *nvroot;
3967 	char *msgid;
3968 	int reason;
3969 	const char *health;
3970 	uint_t c;
3971 	vdev_stat_t *vs;
3972 
3973 	config = zpool_get_config(zhp, NULL);
3974 	reason = zpool_get_status(zhp, &msgid);
3975 
3976 	cbp->cb_count++;
3977 
3978 	/*
3979 	 * If we were given 'zpool status -x', only report those pools with
3980 	 * problems.
3981 	 */
3982 	if (cbp->cb_explain &&
3983 	    (reason == ZPOOL_STATUS_OK ||
3984 	    reason == ZPOOL_STATUS_VERSION_OLDER ||
3985 	    reason == ZPOOL_STATUS_FEAT_DISABLED)) {
3986 		if (!cbp->cb_allpools) {
3987 			(void) printf(gettext("pool '%s' is healthy\n"),
3988 			    zpool_get_name(zhp));
3989 			if (cbp->cb_first)
3990 				cbp->cb_first = B_FALSE;
3991 		}
3992 		return (0);
3993 	}
3994 
3995 	if (cbp->cb_first)
3996 		cbp->cb_first = B_FALSE;
3997 	else
3998 		(void) printf("\n");
3999 
4000 	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
4001 	    &nvroot) == 0);
4002 	verify(nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_VDEV_STATS,
4003 	    (uint64_t **)&vs, &c) == 0);
4004 	health = zpool_state_to_name(vs->vs_state, vs->vs_aux);
4005 
4006 	(void) printf(gettext("  pool: %s\n"), zpool_get_name(zhp));
4007 	(void) printf(gettext(" state: %s\n"), health);
4008 
4009 	switch (reason) {
4010 	case ZPOOL_STATUS_MISSING_DEV_R:
4011 		(void) printf(gettext("status: One or more devices could not "
4012 		    "be opened.  Sufficient replicas exist for\n\tthe pool to "
4013 		    "continue functioning in a degraded state.\n"));
4014 		(void) printf(gettext("action: Attach the missing device and "
4015 		    "online it using 'zpool online'.\n"));
4016 		break;
4017 
4018 	case ZPOOL_STATUS_MISSING_DEV_NR:
4019 		(void) printf(gettext("status: One or more devices could not "
4020 		    "be opened.  There are insufficient\n\treplicas for the "
4021 		    "pool to continue functioning.\n"));
4022 		(void) printf(gettext("action: Attach the missing device and "
4023 		    "online it using 'zpool online'.\n"));
4024 		break;
4025 
4026 	case ZPOOL_STATUS_CORRUPT_LABEL_R:
4027 		(void) printf(gettext("status: One or more devices could not "
4028 		    "be used because the label is missing or\n\tinvalid.  "
4029 		    "Sufficient replicas exist for the pool to continue\n\t"
4030 		    "functioning in a degraded state.\n"));
4031 		(void) printf(gettext("action: Replace the device using "
4032 		    "'zpool replace'.\n"));
4033 		break;
4034 
4035 	case ZPOOL_STATUS_CORRUPT_LABEL_NR:
4036 		(void) printf(gettext("status: One or more devices could not "
4037 		    "be used because the label is missing \n\tor invalid.  "
4038 		    "There are insufficient replicas for the pool to "
4039 		    "continue\n\tfunctioning.\n"));
4040 		zpool_explain_recover(zpool_get_handle(zhp),
4041 		    zpool_get_name(zhp), reason, config);
4042 		break;
4043 
4044 	case ZPOOL_STATUS_FAILING_DEV:
4045 		(void) printf(gettext("status: One or more devices has "
4046 		    "experienced an unrecoverable error.  An\n\tattempt was "
4047 		    "made to correct the error.  Applications are "
4048 		    "unaffected.\n"));
4049 		(void) printf(gettext("action: Determine if the device needs "
4050 		    "to be replaced, and clear the errors\n\tusing "
4051 		    "'zpool clear' or replace the device with 'zpool "
4052 		    "replace'.\n"));
4053 		break;
4054 
4055 	case ZPOOL_STATUS_OFFLINE_DEV:
4056 		(void) printf(gettext("status: One or more devices has "
4057 		    "been taken offline by the administrator.\n\tSufficient "
4058 		    "replicas exist for the pool to continue functioning in "
4059 		    "a\n\tdegraded state.\n"));
4060 		(void) printf(gettext("action: Online the device using "
4061 		    "'zpool online' or replace the device with\n\t'zpool "
4062 		    "replace'.\n"));
4063 		break;
4064 
4065 	case ZPOOL_STATUS_REMOVED_DEV:
4066 		(void) printf(gettext("status: One or more devices has "
4067 		    "been removed by the administrator.\n\tSufficient "
4068 		    "replicas exist for the pool to continue functioning in "
4069 		    "a\n\tdegraded state.\n"));
4070 		(void) printf(gettext("action: Online the device using "
4071 		    "'zpool online' or replace the device with\n\t'zpool "
4072 		    "replace'.\n"));
4073 		break;
4074 
4075 	case ZPOOL_STATUS_RESILVERING:
4076 		(void) printf(gettext("status: One or more devices is "
4077 		    "currently being resilvered.  The pool will\n\tcontinue "
4078 		    "to function, possibly in a degraded state.\n"));
4079 		(void) printf(gettext("action: Wait for the resilver to "
4080 		    "complete.\n"));
4081 		break;
4082 
4083 	case ZPOOL_STATUS_CORRUPT_DATA:
4084 		(void) printf(gettext("status: One or more devices has "
4085 		    "experienced an error resulting in data\n\tcorruption.  "
4086 		    "Applications may be affected.\n"));
4087 		(void) printf(gettext("action: Restore the file in question "
4088 		    "if possible.  Otherwise restore the\n\tentire pool from "
4089 		    "backup.\n"));
4090 		break;
4091 
4092 	case ZPOOL_STATUS_CORRUPT_POOL:
4093 		(void) printf(gettext("status: The pool metadata is corrupted "
4094 		    "and the pool cannot be opened.\n"));
4095 		zpool_explain_recover(zpool_get_handle(zhp),
4096 		    zpool_get_name(zhp), reason, config);
4097 		break;
4098 
4099 	case ZPOOL_STATUS_VERSION_OLDER:
4100 		(void) printf(gettext("status: The pool is formatted using a "
4101 		    "legacy on-disk format.  The pool can\n\tstill be used, "
4102 		    "but some features are unavailable.\n"));
4103 		(void) printf(gettext("action: Upgrade the pool using 'zpool "
4104 		    "upgrade'.  Once this is done, the\n\tpool will no longer "
4105 		    "be accessible on software that does not support feature\n"
4106 		    "\tflags.\n"));
4107 		break;
4108 
4109 	case ZPOOL_STATUS_VERSION_NEWER:
4110 		(void) printf(gettext("status: The pool has been upgraded to a "
4111 		    "newer, incompatible on-disk version.\n\tThe pool cannot "
4112 		    "be accessed on this system.\n"));
4113 		(void) printf(gettext("action: Access the pool from a system "
4114 		    "running more recent software, or\n\trestore the pool from "
4115 		    "backup.\n"));
4116 		break;
4117 
4118 	case ZPOOL_STATUS_FEAT_DISABLED:
4119 		(void) printf(gettext("status: Some supported features are not "
4120 		    "enabled on the pool. The pool can\n\tstill be used, but "
4121 		    "some features are unavailable.\n"));
4122 		(void) printf(gettext("action: Enable all features using "
4123 		    "'zpool upgrade'. Once this is done,\n\tthe pool may no "
4124 		    "longer be accessible by software that does not support\n\t"
4125 		    "the features. See zpool-features(5) for details.\n"));
4126 		break;
4127 
4128 	case ZPOOL_STATUS_UNSUP_FEAT_READ:
4129 		(void) printf(gettext("status: The pool cannot be accessed on "
4130 		    "this system because it uses the\n\tfollowing feature(s) "
4131 		    "not supported on this system:\n"));
4132 		zpool_print_unsup_feat(config);
4133 		(void) printf("\n");
4134 		(void) printf(gettext("action: Access the pool from a system "
4135 		    "that supports the required feature(s),\n\tor restore the "
4136 		    "pool from backup.\n"));
4137 		break;
4138 
4139 	case ZPOOL_STATUS_UNSUP_FEAT_WRITE:
4140 		(void) printf(gettext("status: The pool can only be accessed "
4141 		    "in read-only mode on this system. It\n\tcannot be "
4142 		    "accessed in read-write mode because it uses the "
4143 		    "following\n\tfeature(s) not supported on this system:\n"));
4144 		zpool_print_unsup_feat(config);
4145 		(void) printf("\n");
4146 		(void) printf(gettext("action: The pool cannot be accessed in "
4147 		    "read-write mode. Import the pool with\n"
4148 		    "\t\"-o readonly=on\", access the pool from a system that "
4149 		    "supports the\n\trequired feature(s), or restore the "
4150 		    "pool from backup.\n"));
4151 		break;
4152 
4153 	case ZPOOL_STATUS_FAULTED_DEV_R:
4154 		(void) printf(gettext("status: One or more devices are "
4155 		    "faulted in response to persistent errors.\n\tSufficient "
4156 		    "replicas exist for the pool to continue functioning "
4157 		    "in a\n\tdegraded state.\n"));
4158 		(void) printf(gettext("action: Replace the faulted device, "
4159 		    "or use 'zpool clear' to mark the device\n\trepaired.\n"));
4160 		break;
4161 
4162 	case ZPOOL_STATUS_FAULTED_DEV_NR:
4163 		(void) printf(gettext("status: One or more devices are "
4164 		    "faulted in response to persistent errors.  There are "
4165 		    "insufficient replicas for the pool to\n\tcontinue "
4166 		    "functioning.\n"));
4167 		(void) printf(gettext("action: Destroy and re-create the pool "
4168 		    "from a backup source.  Manually marking the device\n"
4169 		    "\trepaired using 'zpool clear' may allow some data "
4170 		    "to be recovered.\n"));
4171 		break;
4172 
4173 	case ZPOOL_STATUS_IO_FAILURE_WAIT:
4174 	case ZPOOL_STATUS_IO_FAILURE_CONTINUE:
4175 		(void) printf(gettext("status: One or more devices are "
4176 		    "faulted in response to IO failures.\n"));
4177 		(void) printf(gettext("action: Make sure the affected devices "
4178 		    "are connected, then run 'zpool clear'.\n"));
4179 		break;
4180 
4181 	case ZPOOL_STATUS_BAD_LOG:
4182 		(void) printf(gettext("status: An intent log record "
4183 		    "could not be read.\n"
4184 		    "\tWaiting for adminstrator intervention to fix the "
4185 		    "faulted pool.\n"));
4186 		(void) printf(gettext("action: Either restore the affected "
4187 		    "device(s) and run 'zpool online',\n"
4188 		    "\tor ignore the intent log records by running "
4189 		    "'zpool clear'.\n"));
4190 		break;
4191 
4192 	default:
4193 		/*
4194 		 * The remaining errors can't actually be generated, yet.
4195 		 */
4196 		assert(reason == ZPOOL_STATUS_OK);
4197 	}
4198 
4199 	if (msgid != NULL)
4200 		(void) printf(gettext("   see: http://illumos.org/msg/%s\n"),
4201 		    msgid);
4202 
4203 	if (config != NULL) {
4204 		int namewidth;
4205 		uint64_t nerr;
4206 		nvlist_t **spares, **l2cache;
4207 		uint_t nspares, nl2cache;
4208 		pool_scan_stat_t *ps = NULL;
4209 
4210 		(void) nvlist_lookup_uint64_array(nvroot,
4211 		    ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &c);
4212 		print_scan_status(ps);
4213 
4214 		namewidth = max_width(zhp, nvroot, 0, 0);
4215 		if (namewidth < 10)
4216 			namewidth = 10;
4217 
4218 		(void) printf(gettext("config:\n\n"));
4219 		(void) printf(gettext("\t%-*s  %-8s %5s %5s %5s\n"), namewidth,
4220 		    "NAME", "STATE", "READ", "WRITE", "CKSUM");
4221 		print_status_config(zhp, zpool_get_name(zhp), nvroot,
4222 		    namewidth, 0, B_FALSE);
4223 
4224 		if (num_logs(nvroot) > 0)
4225 			print_logs(zhp, nvroot, namewidth, B_TRUE);
4226 		if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
4227 		    &l2cache, &nl2cache) == 0)
4228 			print_l2cache(zhp, l2cache, nl2cache, namewidth);
4229 
4230 		if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
4231 		    &spares, &nspares) == 0)
4232 			print_spares(zhp, spares, nspares, namewidth);
4233 
4234 		if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_ERRCOUNT,
4235 		    &nerr) == 0) {
4236 			nvlist_t *nverrlist = NULL;
4237 
4238 			/*
4239 			 * If the approximate error count is small, get a
4240 			 * precise count by fetching the entire log and
4241 			 * uniquifying the results.
4242 			 */
4243 			if (nerr > 0 && nerr < 100 && !cbp->cb_verbose &&
4244 			    zpool_get_errlog(zhp, &nverrlist) == 0) {
4245 				nvpair_t *elem;
4246 
4247 				elem = NULL;
4248 				nerr = 0;
4249 				while ((elem = nvlist_next_nvpair(nverrlist,
4250 				    elem)) != NULL) {
4251 					nerr++;
4252 				}
4253 			}
4254 			nvlist_free(nverrlist);
4255 
4256 			(void) printf("\n");
4257 
4258 			if (nerr == 0)
4259 				(void) printf(gettext("errors: No known data "
4260 				    "errors\n"));
4261 			else if (!cbp->cb_verbose)
4262 				(void) printf(gettext("errors: %llu data "
4263 				    "errors, use '-v' for a list\n"),
4264 				    (u_longlong_t)nerr);
4265 			else
4266 				print_error_log(zhp);
4267 		}
4268 
4269 		if (cbp->cb_dedup_stats)
4270 			print_dedup_stats(config);
4271 	} else {
4272 		(void) printf(gettext("config: The configuration cannot be "
4273 		    "determined.\n"));
4274 	}
4275 
4276 	return (0);
4277 }
4278 
4279 /*
4280  * zpool status [-vx] [-T d|u] [pool] ... [interval [count]]
4281  *
4282  *	-v	Display complete error logs
4283  *	-x	Display only pools with potential problems
4284  *	-D	Display dedup status (undocumented)
4285  *	-T	Display a timestamp in date(1) or Unix format
4286  *
4287  * Describes the health status of all pools or some subset.
4288  */
4289 int
4290 zpool_do_status(int argc, char **argv)
4291 {
4292 	int c;
4293 	int ret;
4294 	unsigned long interval = 0, count = 0;
4295 	status_cbdata_t cb = { 0 };
4296 
4297 	/* check options */
4298 	while ((c = getopt(argc, argv, "vxDT:")) != -1) {
4299 		switch (c) {
4300 		case 'v':
4301 			cb.cb_verbose = B_TRUE;
4302 			break;
4303 		case 'x':
4304 			cb.cb_explain = B_TRUE;
4305 			break;
4306 		case 'D':
4307 			cb.cb_dedup_stats = B_TRUE;
4308 			break;
4309 		case 'T':
4310 			get_timestamp_arg(*optarg);
4311 			break;
4312 		case '?':
4313 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
4314 			    optopt);
4315 			usage(B_FALSE);
4316 		}
4317 	}
4318 
4319 	argc -= optind;
4320 	argv += optind;
4321 
4322 	get_interval_count(&argc, argv, &interval, &count);
4323 
4324 	if (argc == 0)
4325 		cb.cb_allpools = B_TRUE;
4326 
4327 	cb.cb_first = B_TRUE;
4328 
4329 	for (;;) {
4330 		if (timestamp_fmt != NODATE)
4331 			print_timestamp(timestamp_fmt);
4332 
4333 		ret = for_each_pool(argc, argv, B_TRUE, NULL,
4334 		    status_callback, &cb);
4335 
4336 		if (argc == 0 && cb.cb_count == 0)
4337 			(void) printf(gettext("no pools available\n"));
4338 		else if (cb.cb_explain && cb.cb_first && cb.cb_allpools)
4339 			(void) printf(gettext("all pools are healthy\n"));
4340 
4341 		if (ret != 0)
4342 			return (ret);
4343 
4344 		if (interval == 0)
4345 			break;
4346 
4347 		if (count != 0 && --count == 0)
4348 			break;
4349 
4350 		(void) sleep(interval);
4351 	}
4352 
4353 	return (0);
4354 }
4355 
4356 typedef struct upgrade_cbdata {
4357 	int	cb_first;
4358 	int	cb_argc;
4359 	uint64_t cb_version;
4360 	char	**cb_argv;
4361 } upgrade_cbdata_t;
4362 
4363 static int
4364 upgrade_version(zpool_handle_t *zhp, uint64_t version)
4365 {
4366 	int ret;
4367 	nvlist_t *config;
4368 	uint64_t oldversion;
4369 
4370 	config = zpool_get_config(zhp, NULL);
4371 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
4372 	    &oldversion) == 0);
4373 
4374 	assert(SPA_VERSION_IS_SUPPORTED(oldversion));
4375 	assert(oldversion < version);
4376 
4377 	ret = zpool_upgrade(zhp, version);
4378 	if (ret != 0)
4379 		return (ret);
4380 
4381 	if (version >= SPA_VERSION_FEATURES) {
4382 		(void) printf(gettext("Successfully upgraded "
4383 		    "'%s' from version %llu to feature flags.\n"),
4384 		    zpool_get_name(zhp), oldversion);
4385 	} else {
4386 		(void) printf(gettext("Successfully upgraded "
4387 		    "'%s' from version %llu to version %llu.\n"),
4388 		    zpool_get_name(zhp), oldversion, version);
4389 	}
4390 
4391 	return (0);
4392 }
4393 
4394 static int
4395 upgrade_enable_all(zpool_handle_t *zhp, int *countp)
4396 {
4397 	int i, ret, count;
4398 	boolean_t firstff = B_TRUE;
4399 	nvlist_t *enabled = zpool_get_features(zhp);
4400 
4401 	count = 0;
4402 	for (i = 0; i < SPA_FEATURES; i++) {
4403 		const char *fname = spa_feature_table[i].fi_uname;
4404 		const char *fguid = spa_feature_table[i].fi_guid;
4405 		if (!nvlist_exists(enabled, fguid)) {
4406 			char *propname;
4407 			verify(-1 != asprintf(&propname, "feature@%s", fname));
4408 			ret = zpool_set_prop(zhp, propname,
4409 			    ZFS_FEATURE_ENABLED);
4410 			if (ret != 0) {
4411 				free(propname);
4412 				return (ret);
4413 			}
4414 			count++;
4415 
4416 			if (firstff) {
4417 				(void) printf(gettext("Enabled the "
4418 				    "following features on '%s':\n"),
4419 				    zpool_get_name(zhp));
4420 				firstff = B_FALSE;
4421 			}
4422 			(void) printf(gettext("  %s\n"), fname);
4423 			free(propname);
4424 		}
4425 	}
4426 
4427 	if (countp != NULL)
4428 		*countp = count;
4429 	return (0);
4430 }
4431 
4432 static int
4433 upgrade_cb(zpool_handle_t *zhp, void *arg)
4434 {
4435 	upgrade_cbdata_t *cbp = arg;
4436 	nvlist_t *config;
4437 	uint64_t version;
4438 	boolean_t printnl = B_FALSE;
4439 	int ret;
4440 
4441 	config = zpool_get_config(zhp, NULL);
4442 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
4443 	    &version) == 0);
4444 
4445 	assert(SPA_VERSION_IS_SUPPORTED(version));
4446 
4447 	if (version < cbp->cb_version) {
4448 		cbp->cb_first = B_FALSE;
4449 		ret = upgrade_version(zhp, cbp->cb_version);
4450 		if (ret != 0)
4451 			return (ret);
4452 		printnl = B_TRUE;
4453 
4454 		/*
4455 		 * If they did "zpool upgrade -a", then we could
4456 		 * be doing ioctls to different pools.  We need
4457 		 * to log this history once to each pool, and bypass
4458 		 * the normal history logging that happens in main().
4459 		 */
4460 		(void) zpool_log_history(g_zfs, history_str);
4461 		log_history = B_FALSE;
4462 	}
4463 
4464 	if (cbp->cb_version >= SPA_VERSION_FEATURES) {
4465 		int count;
4466 		ret = upgrade_enable_all(zhp, &count);
4467 		if (ret != 0)
4468 			return (ret);
4469 
4470 		if (count > 0) {
4471 			cbp->cb_first = B_FALSE;
4472 			printnl = B_TRUE;
4473 		}
4474 	}
4475 
4476 	if (printnl) {
4477 		(void) printf(gettext("\n"));
4478 	}
4479 
4480 	return (0);
4481 }
4482 
4483 static int
4484 upgrade_list_older_cb(zpool_handle_t *zhp, void *arg)
4485 {
4486 	upgrade_cbdata_t *cbp = arg;
4487 	nvlist_t *config;
4488 	uint64_t version;
4489 
4490 	config = zpool_get_config(zhp, NULL);
4491 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
4492 	    &version) == 0);
4493 
4494 	assert(SPA_VERSION_IS_SUPPORTED(version));
4495 
4496 	if (version < SPA_VERSION_FEATURES) {
4497 		if (cbp->cb_first) {
4498 			(void) printf(gettext("The following pools are "
4499 			    "formatted with legacy version numbers and can\n"
4500 			    "be upgraded to use feature flags.  After "
4501 			    "being upgraded, these pools\nwill no "
4502 			    "longer be accessible by software that does not "
4503 			    "support feature\nflags.\n\n"));
4504 			(void) printf(gettext("VER  POOL\n"));
4505 			(void) printf(gettext("---  ------------\n"));
4506 			cbp->cb_first = B_FALSE;
4507 		}
4508 
4509 		(void) printf("%2llu   %s\n", (u_longlong_t)version,
4510 		    zpool_get_name(zhp));
4511 	}
4512 
4513 	return (0);
4514 }
4515 
4516 static int
4517 upgrade_list_disabled_cb(zpool_handle_t *zhp, void *arg)
4518 {
4519 	upgrade_cbdata_t *cbp = arg;
4520 	nvlist_t *config;
4521 	uint64_t version;
4522 
4523 	config = zpool_get_config(zhp, NULL);
4524 	verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
4525 	    &version) == 0);
4526 
4527 	if (version >= SPA_VERSION_FEATURES) {
4528 		int i;
4529 		boolean_t poolfirst = B_TRUE;
4530 		nvlist_t *enabled = zpool_get_features(zhp);
4531 
4532 		for (i = 0; i < SPA_FEATURES; i++) {
4533 			const char *fguid = spa_feature_table[i].fi_guid;
4534 			const char *fname = spa_feature_table[i].fi_uname;
4535 			if (!nvlist_exists(enabled, fguid)) {
4536 				if (cbp->cb_first) {
4537 					(void) printf(gettext("\nSome "
4538 					    "supported features are not "
4539 					    "enabled on the following pools. "
4540 					    "Once a\nfeature is enabled the "
4541 					    "pool may become incompatible with "
4542 					    "software\nthat does not support "
4543 					    "the feature. See "
4544 					    "zpool-features(5) for "
4545 					    "details.\n\n"));
4546 					(void) printf(gettext("POOL  "
4547 					    "FEATURE\n"));
4548 					(void) printf(gettext("------"
4549 					    "---------\n"));
4550 					cbp->cb_first = B_FALSE;
4551 				}
4552 
4553 				if (poolfirst) {
4554 					(void) printf(gettext("%s\n"),
4555 					    zpool_get_name(zhp));
4556 					poolfirst = B_FALSE;
4557 				}
4558 
4559 				(void) printf(gettext("      %s\n"), fname);
4560 			}
4561 		}
4562 	}
4563 
4564 	return (0);
4565 }
4566 
4567 /* ARGSUSED */
4568 static int
4569 upgrade_one(zpool_handle_t *zhp, void *data)
4570 {
4571 	boolean_t printnl = B_FALSE;
4572 	upgrade_cbdata_t *cbp = data;
4573 	uint64_t cur_version;
4574 	int ret;
4575 
4576 	if (strcmp("log", zpool_get_name(zhp)) == 0) {
4577 		(void) printf(gettext("'log' is now a reserved word\n"
4578 		    "Pool 'log' must be renamed using export and import"
4579 		    " to upgrade.\n"));
4580 		return (1);
4581 	}
4582 
4583 	cur_version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
4584 	if (cur_version > cbp->cb_version) {
4585 		(void) printf(gettext("Pool '%s' is already formatted "
4586 		    "using more current version '%llu'.\n\n"),
4587 		    zpool_get_name(zhp), cur_version);
4588 		return (0);
4589 	}
4590 
4591 	if (cbp->cb_version != SPA_VERSION && cur_version == cbp->cb_version) {
4592 		(void) printf(gettext("Pool '%s' is already formatted "
4593 		    "using version %llu.\n\n"), zpool_get_name(zhp),
4594 		    cbp->cb_version);
4595 		return (0);
4596 	}
4597 
4598 	if (cur_version != cbp->cb_version) {
4599 		printnl = B_TRUE;
4600 		ret = upgrade_version(zhp, cbp->cb_version);
4601 		if (ret != 0)
4602 			return (ret);
4603 	}
4604 
4605 	if (cbp->cb_version >= SPA_VERSION_FEATURES) {
4606 		int count = 0;
4607 		ret = upgrade_enable_all(zhp, &count);
4608 		if (ret != 0)
4609 			return (ret);
4610 
4611 		if (count != 0) {
4612 			printnl = B_TRUE;
4613 		} else if (cur_version == SPA_VERSION) {
4614 			(void) printf(gettext("Pool '%s' already has all "
4615 			    "supported features enabled.\n"),
4616 			    zpool_get_name(zhp));
4617 		}
4618 	}
4619 
4620 	if (printnl) {
4621 		(void) printf(gettext("\n"));
4622 	}
4623 
4624 	return (0);
4625 }
4626 
4627 /*
4628  * zpool upgrade
4629  * zpool upgrade -v
4630  * zpool upgrade [-V version] <-a | pool ...>
4631  *
4632  * With no arguments, display downrev'd ZFS pool available for upgrade.
4633  * Individual pools can be upgraded by specifying the pool, and '-a' will
4634  * upgrade all pools.
4635  */
4636 int
4637 zpool_do_upgrade(int argc, char **argv)
4638 {
4639 	int c;
4640 	upgrade_cbdata_t cb = { 0 };
4641 	int ret = 0;
4642 	boolean_t showversions = B_FALSE;
4643 	boolean_t upgradeall = B_FALSE;
4644 	char *end;
4645 
4646 
4647 	/* check options */
4648 	while ((c = getopt(argc, argv, ":avV:")) != -1) {
4649 		switch (c) {
4650 		case 'a':
4651 			upgradeall = B_TRUE;
4652 			break;
4653 		case 'v':
4654 			showversions = B_TRUE;
4655 			break;
4656 		case 'V':
4657 			cb.cb_version = strtoll(optarg, &end, 10);
4658 			if (*end != '\0' ||
4659 			    !SPA_VERSION_IS_SUPPORTED(cb.cb_version)) {
4660 				(void) fprintf(stderr,
4661 				    gettext("invalid version '%s'\n"), optarg);
4662 				usage(B_FALSE);
4663 			}
4664 			break;
4665 		case ':':
4666 			(void) fprintf(stderr, gettext("missing argument for "
4667 			    "'%c' option\n"), optopt);
4668 			usage(B_FALSE);
4669 			break;
4670 		case '?':
4671 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
4672 			    optopt);
4673 			usage(B_FALSE);
4674 		}
4675 	}
4676 
4677 	cb.cb_argc = argc;
4678 	cb.cb_argv = argv;
4679 	argc -= optind;
4680 	argv += optind;
4681 
4682 	if (cb.cb_version == 0) {
4683 		cb.cb_version = SPA_VERSION;
4684 	} else if (!upgradeall && argc == 0) {
4685 		(void) fprintf(stderr, gettext("-V option is "
4686 		    "incompatible with other arguments\n"));
4687 		usage(B_FALSE);
4688 	}
4689 
4690 	if (showversions) {
4691 		if (upgradeall || argc != 0) {
4692 			(void) fprintf(stderr, gettext("-v option is "
4693 			    "incompatible with other arguments\n"));
4694 			usage(B_FALSE);
4695 		}
4696 	} else if (upgradeall) {
4697 		if (argc != 0) {
4698 			(void) fprintf(stderr, gettext("-a option should not "
4699 			    "be used along with a pool name\n"));
4700 			usage(B_FALSE);
4701 		}
4702 	}
4703 
4704 	(void) printf(gettext("This system supports ZFS pool feature "
4705 	    "flags.\n\n"));
4706 	if (showversions) {
4707 		int i;
4708 
4709 		(void) printf(gettext("The following features are "
4710 		    "supported:\n\n"));
4711 		(void) printf(gettext("FEAT DESCRIPTION\n"));
4712 		(void) printf("----------------------------------------------"
4713 		    "---------------\n");
4714 		for (i = 0; i < SPA_FEATURES; i++) {
4715 			zfeature_info_t *fi = &spa_feature_table[i];
4716 			const char *ro =
4717 			    (fi->fi_flags & ZFEATURE_FLAG_READONLY_COMPAT) ?
4718 			    " (read-only compatible)" : "";
4719 
4720 			(void) printf("%-37s%s\n", fi->fi_uname, ro);
4721 			(void) printf("     %s\n", fi->fi_desc);
4722 		}
4723 		(void) printf("\n");
4724 
4725 		(void) printf(gettext("The following legacy versions are also "
4726 		    "supported:\n\n"));
4727 		(void) printf(gettext("VER  DESCRIPTION\n"));
4728 		(void) printf("---  -----------------------------------------"
4729 		    "---------------\n");
4730 		(void) printf(gettext(" 1   Initial ZFS version\n"));
4731 		(void) printf(gettext(" 2   Ditto blocks "
4732 		    "(replicated metadata)\n"));
4733 		(void) printf(gettext(" 3   Hot spares and double parity "
4734 		    "RAID-Z\n"));
4735 		(void) printf(gettext(" 4   zpool history\n"));
4736 		(void) printf(gettext(" 5   Compression using the gzip "
4737 		    "algorithm\n"));
4738 		(void) printf(gettext(" 6   bootfs pool property\n"));
4739 		(void) printf(gettext(" 7   Separate intent log devices\n"));
4740 		(void) printf(gettext(" 8   Delegated administration\n"));
4741 		(void) printf(gettext(" 9   refquota and refreservation "
4742 		    "properties\n"));
4743 		(void) printf(gettext(" 10  Cache devices\n"));
4744 		(void) printf(gettext(" 11  Improved scrub performance\n"));
4745 		(void) printf(gettext(" 12  Snapshot properties\n"));
4746 		(void) printf(gettext(" 13  snapused property\n"));
4747 		(void) printf(gettext(" 14  passthrough-x aclinherit\n"));
4748 		(void) printf(gettext(" 15  user/group space accounting\n"));
4749 		(void) printf(gettext(" 16  stmf property support\n"));
4750 		(void) printf(gettext(" 17  Triple-parity RAID-Z\n"));
4751 		(void) printf(gettext(" 18  Snapshot user holds\n"));
4752 		(void) printf(gettext(" 19  Log device removal\n"));
4753 		(void) printf(gettext(" 20  Compression using zle "
4754 		    "(zero-length encoding)\n"));
4755 		(void) printf(gettext(" 21  Deduplication\n"));
4756 		(void) printf(gettext(" 22  Received properties\n"));
4757 		(void) printf(gettext(" 23  Slim ZIL\n"));
4758 		(void) printf(gettext(" 24  System attributes\n"));
4759 		(void) printf(gettext(" 25  Improved scrub stats\n"));
4760 		(void) printf(gettext(" 26  Improved snapshot deletion "
4761 		    "performance\n"));
4762 		(void) printf(gettext(" 27  Improved snapshot creation "
4763 		    "performance\n"));
4764 		(void) printf(gettext(" 28  Multiple vdev replacements\n"));
4765 		(void) printf(gettext("\nFor more information on a particular "
4766 		    "version, including supported releases,\n"));
4767 		(void) printf(gettext("see the ZFS Administration Guide.\n\n"));
4768 	} else if (argc == 0 && upgradeall) {
4769 		cb.cb_first = B_TRUE;
4770 		ret = zpool_iter(g_zfs, upgrade_cb, &cb);
4771 		if (ret == 0 && cb.cb_first) {
4772 			if (cb.cb_version == SPA_VERSION) {
4773 				(void) printf(gettext("All pools are already "
4774 				    "formatted using feature flags.\n\n"));
4775 				(void) printf(gettext("Every feature flags "
4776 				    "pool already has all supported features "
4777 				    "enabled.\n"));
4778 			} else {
4779 				(void) printf(gettext("All pools are already "
4780 				    "formatted with version %llu or higher.\n"),
4781 				    cb.cb_version);
4782 			}
4783 		}
4784 	} else if (argc == 0) {
4785 		cb.cb_first = B_TRUE;
4786 		ret = zpool_iter(g_zfs, upgrade_list_older_cb, &cb);
4787 		assert(ret == 0);
4788 
4789 		if (cb.cb_first) {
4790 			(void) printf(gettext("All pools are formatted "
4791 			    "using feature flags.\n\n"));
4792 		} else {
4793 			(void) printf(gettext("\nUse 'zpool upgrade -v' "
4794 			    "for a list of available legacy versions.\n"));
4795 		}
4796 
4797 		cb.cb_first = B_TRUE;
4798 		ret = zpool_iter(g_zfs, upgrade_list_disabled_cb, &cb);
4799 		assert(ret == 0);
4800 
4801 		if (cb.cb_first) {
4802 			(void) printf(gettext("Every feature flags pool has "
4803 			    "all supported features enabled.\n"));
4804 		} else {
4805 			(void) printf(gettext("\n"));
4806 		}
4807 	} else {
4808 		ret = for_each_pool(argc, argv, B_FALSE, NULL,
4809 		    upgrade_one, &cb);
4810 	}
4811 
4812 	return (ret);
4813 }
4814 
4815 typedef struct hist_cbdata {
4816 	boolean_t first;
4817 	boolean_t longfmt;
4818 	boolean_t internal;
4819 } hist_cbdata_t;
4820 
4821 /*
4822  * Print out the command history for a specific pool.
4823  */
4824 static int
4825 get_history_one(zpool_handle_t *zhp, void *data)
4826 {
4827 	nvlist_t *nvhis;
4828 	nvlist_t **records;
4829 	uint_t numrecords;
4830 	int ret, i;
4831 	hist_cbdata_t *cb = (hist_cbdata_t *)data;
4832 
4833 	cb->first = B_FALSE;
4834 
4835 	(void) printf(gettext("History for '%s':\n"), zpool_get_name(zhp));
4836 
4837 	if ((ret = zpool_get_history(zhp, &nvhis)) != 0)
4838 		return (ret);
4839 
4840 	verify(nvlist_lookup_nvlist_array(nvhis, ZPOOL_HIST_RECORD,
4841 	    &records, &numrecords) == 0);
4842 	for (i = 0; i < numrecords; i++) {
4843 		nvlist_t *rec = records[i];
4844 		char tbuf[30] = "";
4845 
4846 		if (nvlist_exists(rec, ZPOOL_HIST_TIME)) {
4847 			time_t tsec;
4848 			struct tm t;
4849 
4850 			tsec = fnvlist_lookup_uint64(records[i],
4851 			    ZPOOL_HIST_TIME);
4852 			(void) localtime_r(&tsec, &t);
4853 			(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
4854 		}
4855 
4856 		if (nvlist_exists(rec, ZPOOL_HIST_CMD)) {
4857 			(void) printf("%s %s", tbuf,
4858 			    fnvlist_lookup_string(rec, ZPOOL_HIST_CMD));
4859 		} else if (nvlist_exists(rec, ZPOOL_HIST_INT_EVENT)) {
4860 			int ievent =
4861 			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_INT_EVENT);
4862 			if (!cb->internal)
4863 				continue;
4864 			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS) {
4865 				(void) printf("%s unrecognized record:\n",
4866 				    tbuf);
4867 				dump_nvlist(rec, 4);
4868 				continue;
4869 			}
4870 			(void) printf("%s [internal %s txg:%lld] %s", tbuf,
4871 			    zfs_history_event_names[ievent],
4872 			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_TXG),
4873 			    fnvlist_lookup_string(rec, ZPOOL_HIST_INT_STR));
4874 		} else if (nvlist_exists(rec, ZPOOL_HIST_INT_NAME)) {
4875 			if (!cb->internal)
4876 				continue;
4877 			(void) printf("%s [txg:%lld] %s", tbuf,
4878 			    fnvlist_lookup_uint64(rec, ZPOOL_HIST_TXG),
4879 			    fnvlist_lookup_string(rec, ZPOOL_HIST_INT_NAME));
4880 			if (nvlist_exists(rec, ZPOOL_HIST_DSNAME)) {
4881 				(void) printf(" %s (%llu)",
4882 				    fnvlist_lookup_string(rec,
4883 				    ZPOOL_HIST_DSNAME),
4884 				    fnvlist_lookup_uint64(rec,
4885 				    ZPOOL_HIST_DSID));
4886 			}
4887 			(void) printf(" %s", fnvlist_lookup_string(rec,
4888 			    ZPOOL_HIST_INT_STR));
4889 		} else if (nvlist_exists(rec, ZPOOL_HIST_IOCTL)) {
4890 			if (!cb->internal)
4891 				continue;
4892 			(void) printf("%s ioctl %s\n", tbuf,
4893 			    fnvlist_lookup_string(rec, ZPOOL_HIST_IOCTL));
4894 			if (nvlist_exists(rec, ZPOOL_HIST_INPUT_NVL)) {
4895 				(void) printf("    input:\n");
4896 				dump_nvlist(fnvlist_lookup_nvlist(rec,
4897 				    ZPOOL_HIST_INPUT_NVL), 8);
4898 			}
4899 			if (nvlist_exists(rec, ZPOOL_HIST_OUTPUT_NVL)) {
4900 				(void) printf("    output:\n");
4901 				dump_nvlist(fnvlist_lookup_nvlist(rec,
4902 				    ZPOOL_HIST_OUTPUT_NVL), 8);
4903 			}
4904 		} else {
4905 			if (!cb->internal)
4906 				continue;
4907 			(void) printf("%s unrecognized record:\n", tbuf);
4908 			dump_nvlist(rec, 4);
4909 		}
4910 
4911 		if (!cb->longfmt) {
4912 			(void) printf("\n");
4913 			continue;
4914 		}
4915 		(void) printf(" [");
4916 		if (nvlist_exists(rec, ZPOOL_HIST_WHO)) {
4917 			uid_t who = fnvlist_lookup_uint64(rec, ZPOOL_HIST_WHO);
4918 			struct passwd *pwd = getpwuid(who);
4919 			(void) printf("user %d ", (int)who);
4920 			if (pwd != NULL)
4921 				(void) printf("(%s) ", pwd->pw_name);
4922 		}
4923 		if (nvlist_exists(rec, ZPOOL_HIST_HOST)) {
4924 			(void) printf("on %s",
4925 			    fnvlist_lookup_string(rec, ZPOOL_HIST_HOST));
4926 		}
4927 		if (nvlist_exists(rec, ZPOOL_HIST_ZONE)) {
4928 			(void) printf(":%s",
4929 			    fnvlist_lookup_string(rec, ZPOOL_HIST_ZONE));
4930 		}
4931 		(void) printf("]");
4932 		(void) printf("\n");
4933 	}
4934 	(void) printf("\n");
4935 	nvlist_free(nvhis);
4936 
4937 	return (ret);
4938 }
4939 
4940 /*
4941  * zpool history <pool>
4942  *
4943  * Displays the history of commands that modified pools.
4944  */
4945 int
4946 zpool_do_history(int argc, char **argv)
4947 {
4948 	hist_cbdata_t cbdata = { 0 };
4949 	int ret;
4950 	int c;
4951 
4952 	cbdata.first = B_TRUE;
4953 	/* check options */
4954 	while ((c = getopt(argc, argv, "li")) != -1) {
4955 		switch (c) {
4956 		case 'l':
4957 			cbdata.longfmt = B_TRUE;
4958 			break;
4959 		case 'i':
4960 			cbdata.internal = B_TRUE;
4961 			break;
4962 		case '?':
4963 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
4964 			    optopt);
4965 			usage(B_FALSE);
4966 		}
4967 	}
4968 	argc -= optind;
4969 	argv += optind;
4970 
4971 	ret = for_each_pool(argc, argv, B_FALSE,  NULL, get_history_one,
4972 	    &cbdata);
4973 
4974 	if (argc == 0 && cbdata.first == B_TRUE) {
4975 		(void) printf(gettext("no pools available\n"));
4976 		return (0);
4977 	}
4978 
4979 	return (ret);
4980 }
4981 
4982 static int
4983 get_callback(zpool_handle_t *zhp, void *data)
4984 {
4985 	zprop_get_cbdata_t *cbp = (zprop_get_cbdata_t *)data;
4986 	char value[MAXNAMELEN];
4987 	zprop_source_t srctype;
4988 	zprop_list_t *pl;
4989 
4990 	for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) {
4991 
4992 		/*
4993 		 * Skip the special fake placeholder. This will also skip
4994 		 * over the name property when 'all' is specified.
4995 		 */
4996 		if (pl->pl_prop == ZPOOL_PROP_NAME &&
4997 		    pl == cbp->cb_proplist)
4998 			continue;
4999 
5000 		if (pl->pl_prop == ZPROP_INVAL &&
5001 		    (zpool_prop_feature(pl->pl_user_prop) ||
5002 		    zpool_prop_unsupported(pl->pl_user_prop))) {
5003 			srctype = ZPROP_SRC_LOCAL;
5004 
5005 			if (zpool_prop_get_feature(zhp, pl->pl_user_prop,
5006 			    value, sizeof (value)) == 0) {
5007 				zprop_print_one_property(zpool_get_name(zhp),
5008 				    cbp, pl->pl_user_prop, value, srctype,
5009 				    NULL, NULL);
5010 			}
5011 		} else {
5012 			if (zpool_get_prop(zhp, pl->pl_prop, value,
5013 			    sizeof (value), &srctype, cbp->cb_literal) != 0)
5014 				continue;
5015 
5016 			zprop_print_one_property(zpool_get_name(zhp), cbp,
5017 			    zpool_prop_to_name(pl->pl_prop), value, srctype,
5018 			    NULL, NULL);
5019 		}
5020 	}
5021 	return (0);
5022 }
5023 
5024 /*
5025  * zpool get [-Hp] [-o "all" | field[,...]] <"all" | property[,...]> <pool> ...
5026  *
5027  *	-H	Scripted mode.  Don't display headers, and separate properties
5028  *		by a single tab.
5029  *	-o	List of columns to display.  Defaults to
5030  *		"name,property,value,source".
5031  * 	-p	Diplay values in parsable (exact) format.
5032  *
5033  * Get properties of pools in the system. Output space statistics
5034  * for each one as well as other attributes.
5035  */
5036 int
5037 zpool_do_get(int argc, char **argv)
5038 {
5039 	zprop_get_cbdata_t cb = { 0 };
5040 	zprop_list_t fake_name = { 0 };
5041 	int ret;
5042 	int c, i;
5043 	char *value;
5044 
5045 	cb.cb_first = B_TRUE;
5046 
5047 	/*
5048 	 * Set up default columns and sources.
5049 	 */
5050 	cb.cb_sources = ZPROP_SRC_ALL;
5051 	cb.cb_columns[0] = GET_COL_NAME;
5052 	cb.cb_columns[1] = GET_COL_PROPERTY;
5053 	cb.cb_columns[2] = GET_COL_VALUE;
5054 	cb.cb_columns[3] = GET_COL_SOURCE;
5055 	cb.cb_type = ZFS_TYPE_POOL;
5056 
5057 	/* check options */
5058 	while ((c = getopt(argc, argv, ":Hpo:")) != -1) {
5059 		switch (c) {
5060 		case 'p':
5061 			cb.cb_literal = B_TRUE;
5062 			break;
5063 		case 'H':
5064 			cb.cb_scripted = B_TRUE;
5065 			break;
5066 		case 'o':
5067 			bzero(&cb.cb_columns, sizeof (cb.cb_columns));
5068 			i = 0;
5069 			while (*optarg != '\0') {
5070 				static char *col_subopts[] =
5071 				{ "name", "property", "value", "source",
5072 				"all", NULL };
5073 
5074 				if (i == ZFS_GET_NCOLS) {
5075 					(void) fprintf(stderr, gettext("too "
5076 					"many fields given to -o "
5077 					"option\n"));
5078 					usage(B_FALSE);
5079 				}
5080 
5081 				switch (getsubopt(&optarg, col_subopts,
5082 				    &value)) {
5083 				case 0:
5084 					cb.cb_columns[i++] = GET_COL_NAME;
5085 					break;
5086 				case 1:
5087 					cb.cb_columns[i++] = GET_COL_PROPERTY;
5088 					break;
5089 				case 2:
5090 					cb.cb_columns[i++] = GET_COL_VALUE;
5091 					break;
5092 				case 3:
5093 					cb.cb_columns[i++] = GET_COL_SOURCE;
5094 					break;
5095 				case 4:
5096 					if (i > 0) {
5097 						(void) fprintf(stderr,
5098 						    gettext("\"all\" conflicts "
5099 						    "with specific fields "
5100 						    "given to -o option\n"));
5101 						usage(B_FALSE);
5102 					}
5103 					cb.cb_columns[0] = GET_COL_NAME;
5104 					cb.cb_columns[1] = GET_COL_PROPERTY;
5105 					cb.cb_columns[2] = GET_COL_VALUE;
5106 					cb.cb_columns[3] = GET_COL_SOURCE;
5107 					i = ZFS_GET_NCOLS;
5108 					break;
5109 				default:
5110 					(void) fprintf(stderr,
5111 					    gettext("invalid column name "
5112 					    "'%s'\n"), value);
5113 					usage(B_FALSE);
5114 				}
5115 			}
5116 			break;
5117 		case '?':
5118 			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
5119 			    optopt);
5120 			usage(B_FALSE);
5121 		}
5122 	}
5123 
5124 	argc -= optind;
5125 	argv += optind;
5126 
5127 	if (argc < 1) {
5128 		(void) fprintf(stderr, gettext("missing property "
5129 		    "argument\n"));
5130 		usage(B_FALSE);
5131 	}
5132 
5133 	if (zprop_get_list(g_zfs, argv[0], &cb.cb_proplist,
5134 	    ZFS_TYPE_POOL) != 0)
5135 		usage(B_FALSE);
5136 
5137 	argc--;
5138 	argv++;
5139 
5140 	if (cb.cb_proplist != NULL) {
5141 		fake_name.pl_prop = ZPOOL_PROP_NAME;
5142 		fake_name.pl_width = strlen(gettext("NAME"));
5143 		fake_name.pl_next = cb.cb_proplist;
5144 		cb.cb_proplist = &fake_name;
5145 	}
5146 
5147 	ret = for_each_pool(argc, argv, B_TRUE, &cb.cb_proplist,
5148 	    get_callback, &cb);
5149 
5150 	if (cb.cb_proplist == &fake_name)
5151 		zprop_free_list(fake_name.pl_next);
5152 	else
5153 		zprop_free_list(cb.cb_proplist);
5154 
5155 	return (ret);
5156 }
5157 
5158 typedef struct set_cbdata {
5159 	char *cb_propname;
5160 	char *cb_value;
5161 	boolean_t cb_any_successful;
5162 } set_cbdata_t;
5163 
5164 int
5165 set_callback(zpool_handle_t *zhp, void *data)
5166 {
5167 	int error;
5168 	set_cbdata_t *cb = (set_cbdata_t *)data;
5169 
5170 	error = zpool_set_prop(zhp, cb->cb_propname, cb->cb_value);
5171 
5172 	if (!error)
5173 		cb->cb_any_successful = B_TRUE;
5174 
5175 	return (error);
5176 }
5177 
5178 int
5179 zpool_do_set(int argc, char **argv)
5180 {
5181 	set_cbdata_t cb = { 0 };
5182 	int error;
5183 
5184 	if (argc > 1 && argv[1][0] == '-') {
5185 		(void) fprintf(stderr, gettext("invalid option '%c'\n"),
5186 		    argv[1][1]);
5187 		usage(B_FALSE);
5188 	}
5189 
5190 	if (argc < 2) {
5191 		(void) fprintf(stderr, gettext("missing property=value "
5192 		    "argument\n"));
5193 		usage(B_FALSE);
5194 	}
5195 
5196 	if (argc < 3) {
5197 		(void) fprintf(stderr, gettext("missing pool name\n"));
5198 		usage(B_FALSE);
5199 	}
5200 
5201 	if (argc > 3) {
5202 		(void) fprintf(stderr, gettext("too many pool names\n"));
5203 		usage(B_FALSE);
5204 	}
5205 
5206 	cb.cb_propname = argv[1];
5207 	cb.cb_value = strchr(cb.cb_propname, '=');
5208 	if (cb.cb_value == NULL) {
5209 		(void) fprintf(stderr, gettext("missing value in "
5210 		    "property=value argument\n"));
5211 		usage(B_FALSE);
5212 	}
5213 
5214 	*(cb.cb_value) = '\0';
5215 	cb.cb_value++;
5216 
5217 	error = for_each_pool(argc - 2, argv + 2, B_TRUE, NULL,
5218 	    set_callback, &cb);
5219 
5220 	return (error);
5221 }
5222 
5223 static int
5224 find_command_idx(char *command, int *idx)
5225 {
5226 	int i;
5227 
5228 	for (i = 0; i < NCOMMAND; i++) {
5229 		if (command_table[i].name == NULL)
5230 			continue;
5231 
5232 		if (strcmp(command, command_table[i].name) == 0) {
5233 			*idx = i;
5234 			return (0);
5235 		}
5236 	}
5237 	return (1);
5238 }
5239 
5240 int
5241 main(int argc, char **argv)
5242 {
5243 	int ret = 0;
5244 	int i;
5245 	char *cmdname;
5246 
5247 	(void) setlocale(LC_ALL, "");
5248 	(void) textdomain(TEXT_DOMAIN);
5249 
5250 	if ((g_zfs = libzfs_init()) == NULL) {
5251 		(void) fprintf(stderr, gettext("internal error: failed to "
5252 		    "initialize ZFS library\n"));
5253 		return (1);
5254 	}
5255 
5256 	libzfs_print_on_error(g_zfs, B_TRUE);
5257 
5258 	opterr = 0;
5259 
5260 	/*
5261 	 * Make sure the user has specified some command.
5262 	 */
5263 	if (argc < 2) {
5264 		(void) fprintf(stderr, gettext("missing command\n"));
5265 		usage(B_FALSE);
5266 	}
5267 
5268 	cmdname = argv[1];
5269 
5270 	/*
5271 	 * Special case '-?'
5272 	 */
5273 	if (strcmp(cmdname, "-?") == 0)
5274 		usage(B_TRUE);
5275 
5276 	zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
5277 
5278 	/*
5279 	 * Run the appropriate command.
5280 	 */
5281 	if (find_command_idx(cmdname, &i) == 0) {
5282 		current_command = &command_table[i];
5283 		ret = command_table[i].func(argc - 1, argv + 1);
5284 	} else if (strchr(cmdname, '=')) {
5285 		verify(find_command_idx("set", &i) == 0);
5286 		current_command = &command_table[i];
5287 		ret = command_table[i].func(argc, argv);
5288 	} else if (strcmp(cmdname, "freeze") == 0 && argc == 3) {
5289 		/*
5290 		 * 'freeze' is a vile debugging abomination, so we treat
5291 		 * it as such.
5292 		 */
5293 		char buf[16384];
5294 		int fd = open(ZFS_DEV, O_RDWR);
5295 		(void) strcpy((void *)buf, argv[2]);
5296 		return (!!ioctl(fd, ZFS_IOC_POOL_FREEZE, buf));
5297 	} else {
5298 		(void) fprintf(stderr, gettext("unrecognized "
5299 		    "command '%s'\n"), cmdname);
5300 		usage(B_FALSE);
5301 	}
5302 
5303 	if (ret == 0 && log_history)
5304 		(void) zpool_log_history(g_zfs, history_str);
5305 
5306 	libzfs_fini(g_zfs);
5307 
5308 	/*
5309 	 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
5310 	 * for the purposes of running ::findleaks.
5311 	 */
5312 	if (getenv("ZFS_ABORT") != NULL) {
5313 		(void) printf("dumping core by request\n");
5314 		abort();
5315 	}
5316 
5317 	return (ret);
5318 }
5319