spa.c revision 0a4e9518a44f226be6d39383330b5b1792d2f184
1fa9e406ahrens/*
2fa9e406ahrens * CDDL HEADER START
3fa9e406ahrens *
4fa9e406ahrens * The contents of this file are subject to the terms of the
5ea8dc4beschrock * Common Development and Distribution License (the "License").
6ea8dc4beschrock * You may not use this file except in compliance with the License.
7fa9e406ahrens *
8fa9e406ahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9fa9e406ahrens * or http://www.opensolaris.org/os/licensing.
10fa9e406ahrens * See the License for the specific language governing permissions
11fa9e406ahrens * and limitations under the License.
12fa9e406ahrens *
13fa9e406ahrens * When distributing Covered Code, include this CDDL HEADER in each
14fa9e406ahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15fa9e406ahrens * If applicable, add the following below this CDDL HEADER, with the
16fa9e406ahrens * fields enclosed by brackets "[]" replaced with your own identifying
17fa9e406ahrens * information: Portions Copyright [yyyy] [name of copyright owner]
18fa9e406ahrens *
19fa9e406ahrens * CDDL HEADER END
20fa9e406ahrens */
2199653d4eschrock
22fa9e406ahrens/*
2339c2341eschrock * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24fa9e406ahrens * Use is subject to license terms.
25fa9e406ahrens */
26fa9e406ahrens
27fa9e406ahrens#pragma ident	"%Z%%M%	%I%	%E% SMI"
28fa9e406ahrens
29fa9e406ahrens/*
30fa9e406ahrens * This file contains all the routines used when modifying on-disk SPA state.
31fa9e406ahrens * This includes opening, importing, destroying, exporting a pool, and syncing a
32fa9e406ahrens * pool.
33fa9e406ahrens */
34fa9e406ahrens
35fa9e406ahrens#include <sys/zfs_context.h>
36ea8dc4beschrock#include <sys/fm/fs/zfs.h>
37fa9e406ahrens#include <sys/spa_impl.h>
38fa9e406ahrens#include <sys/zio.h>
39fa9e406ahrens#include <sys/zio_checksum.h>
40fa9e406ahrens#include <sys/zio_compress.h>
41fa9e406ahrens#include <sys/dmu.h>
42fa9e406ahrens#include <sys/dmu_tx.h>
43fa9e406ahrens#include <sys/zap.h>
44fa9e406ahrens#include <sys/zil.h>
45fa9e406ahrens#include <sys/vdev_impl.h>
46fa9e406ahrens#include <sys/metaslab.h>
47fa9e406ahrens#include <sys/uberblock_impl.h>
48fa9e406ahrens#include <sys/txg.h>
49fa9e406ahrens#include <sys/avl.h>
50fa9e406ahrens#include <sys/dmu_traverse.h>
51b1b8ab3lling#include <sys/dmu_objset.h>
52fa9e406ahrens#include <sys/unique.h>
53fa9e406ahrens#include <sys/dsl_pool.h>
54b1b8ab3lling#include <sys/dsl_dataset.h>
55fa9e406ahrens#include <sys/dsl_dir.h>
56fa9e406ahrens#include <sys/dsl_prop.h>
57b1b8ab3lling#include <sys/dsl_synctask.h>
58fa9e406ahrens#include <sys/fs/zfs.h>
59fa9e406ahrens#include <sys/callb.h>
609517395ek#include <sys/systeminfo.h>
619517395ek#include <sys/sunddi.h>
62fa9e406ahrens
63990b485lling#include "zfs_prop.h"
64990b485lling
65416e0cdekint zio_taskq_threads = 8;
66416e0cdek
67990b485llingstatic void spa_sync_props(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx);
68990b485lling
69990b485lling/*
70990b485lling * ==========================================================================
71990b485lling * SPA properties routines
72990b485lling * ==========================================================================
73990b485lling */
74990b485lling
75990b485lling/*
76990b485lling * Add a (source=src, propname=propval) list to an nvlist.
77990b485lling */
78990b485llingstatic int
79990b485llingspa_prop_add_list(nvlist_t *nvl, zpool_prop_t prop, char *strval,
80990b485lling    uint64_t intval, zprop_source_t src)
81990b485lling{
82990b485lling	const char *propname = zpool_prop_to_name(prop);
83990b485lling	nvlist_t *propval;
84990b485lling	int err = 0;
85990b485lling
86990b485lling	if (err = nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP))
87990b485lling		return (err);
88990b485lling
89990b485lling	if (err = nvlist_add_uint64(propval, ZPROP_SOURCE, src))
90990b485lling		goto out;
91990b485lling
92990b485lling	if (strval != NULL) {
93990b485lling		if (err = nvlist_add_string(propval, ZPROP_VALUE, strval))
94990b485lling			goto out;
95990b485lling	} else {
96990b485lling		if (err = nvlist_add_uint64(propval, ZPROP_VALUE, intval))
97990b485lling			goto out;
98990b485lling	}
99990b485lling
100990b485lling	err = nvlist_add_nvlist(nvl, propname, propval);
101990b485llingout:
102990b485lling	nvlist_free(propval);
103990b485lling	return (err);
104990b485lling}
105990b485lling
106990b485lling/*
107990b485lling * Get property values from the spa configuration.
108990b485lling */
109990b485llingstatic int
110990b485llingspa_prop_get_config(spa_t *spa, nvlist_t **nvp)
111990b485lling{
112990b485lling	uint64_t size = spa_get_space(spa);
113990b485lling	uint64_t used = spa_get_alloc(spa);
114990b485lling	uint64_t cap, version;
115990b485lling	zprop_source_t src = ZPROP_SRC_NONE;
116990b485lling	int err;
117990b485lling
118990b485lling	/*
119990b485lling	 * readonly properties
120990b485lling	 */
121990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_NAME, spa->spa_name,
122990b485lling	    0, src))
123990b485lling		return (err);
124990b485lling
125990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_SIZE, NULL, size, src))
126990b485lling		return (err);
127990b485lling
128990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_USED, NULL, used, src))
129990b485lling		return (err);
130990b485lling
131990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_AVAILABLE, NULL,
132990b485lling	    size - used, src))
133990b485lling		return (err);
134990b485lling
135990b485lling	cap = (size == 0) ? 0 : (used * 100 / size);
136990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_CAPACITY, NULL, cap, src))
137990b485lling		return (err);
138990b485lling
139990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_GUID, NULL,
140990b485lling	    spa_guid(spa), src))
141990b485lling		return (err);
142990b485lling
143990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_HEALTH, NULL,
144990b485lling	    spa->spa_root_vdev->vdev_state, src))
145990b485lling		return (err);
146990b485lling
147990b485lling	/*
148990b485lling	 * settable properties that are not stored in the pool property object.
149990b485lling	 */
150990b485lling	version = spa_version(spa);
151990b485lling	if (version == zpool_prop_default_numeric(ZPOOL_PROP_VERSION))
152990b485lling		src = ZPROP_SRC_DEFAULT;
153990b485lling	else
154990b485lling		src = ZPROP_SRC_LOCAL;
155990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_VERSION, NULL,
156990b485lling	    version, src))
157990b485lling		return (err);
158990b485lling
159990b485lling	if (spa->spa_root != NULL) {
160990b485lling		src = ZPROP_SRC_LOCAL;
161990b485lling		if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_ALTROOT,
162990b485lling		    spa->spa_root, 0, src))
163990b485lling			return (err);
164990b485lling	}
165990b485lling
166990b485lling	if (spa->spa_temporary ==
167990b485lling	    zpool_prop_default_numeric(ZPOOL_PROP_TEMPORARY))
168990b485lling		src = ZPROP_SRC_DEFAULT;
169990b485lling	else
170990b485lling		src = ZPROP_SRC_LOCAL;
171990b485lling	if (err = spa_prop_add_list(*nvp, ZPOOL_PROP_TEMPORARY, NULL,
172990b485lling	    spa->spa_temporary, src))
173990b485lling		return (err);
174990b485lling
175990b485lling	return (0);
176990b485lling}
177990b485lling
178990b485lling/*
179990b485lling * Get zpool property values.
180990b485lling */
181990b485llingint
182990b485llingspa_prop_get(spa_t *spa, nvlist_t **nvp)
183990b485lling{
184990b485lling	zap_cursor_t zc;
185990b485lling	zap_attribute_t za;
186990b485lling	objset_t *mos = spa->spa_meta_objset;
187990b485lling	int err;
188990b485lling
189990b485lling	if (err = nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP))
190990b485lling		return (err);
191990b485lling
192990b485lling	/*
193990b485lling	 * Get properties from the spa config.
194990b485lling	 */
195990b485lling	if (err = spa_prop_get_config(spa, nvp))
196990b485lling		goto out;
197990b485lling
198990b485lling	mutex_enter(&spa->spa_props_lock);
199990b485lling	/* If no pool property object, no more prop to get. */
200990b485lling	if (spa->spa_pool_props_object == 0) {
201990b485lling		mutex_exit(&spa->spa_props_lock);
202990b485lling		return (0);
203990b485lling	}
204990b485lling
205990b485lling	/*
206990b485lling	 * Get properties from the MOS pool property object.
207990b485lling	 */
208990b485lling	for (zap_cursor_init(&zc, mos, spa->spa_pool_props_object);
209990b485lling	    (err = zap_cursor_retrieve(&zc, &za)) == 0;
210990b485lling	    zap_cursor_advance(&zc)) {
211990b485lling		uint64_t intval = 0;
212990b485lling		char *strval = NULL;
213990b485lling		zprop_source_t src = ZPROP_SRC_DEFAULT;
214990b485lling		zpool_prop_t prop;
215990b485lling
216990b485lling		if ((prop = zpool_name_to_prop(za.za_name)) == ZPROP_INVAL)
217990b485lling			continue;
218990b485lling
219990b485lling		switch (za.za_integer_length) {
220990b485lling		case 8:
221990b485lling			/* integer property */
222990b485lling			if (za.za_first_integer !=
223990b485lling			    zpool_prop_default_numeric(prop))
224990b485lling				src = ZPROP_SRC_LOCAL;
225990b485lling
226990b485lling			if (prop == ZPOOL_PROP_BOOTFS) {
227990b485lling				dsl_pool_t *dp;
228990b485lling				dsl_dataset_t *ds = NULL;
229990b485lling
230990b485lling				dp = spa_get_dsl(spa);
231990b485lling				rw_enter(&dp->dp_config_rwlock, RW_READER);
232990b485lling				if (err = dsl_dataset_open_obj(dp,
233990b485lling				    za.za_first_integer, NULL, DS_MODE_NONE,
234990b485lling				    FTAG, &ds)) {
235990b485lling					rw_exit(&dp->dp_config_rwlock);
236990b485lling					break;
237990b485lling				}
238990b485lling
239990b485lling				strval = kmem_alloc(
240990b485lling				    MAXNAMELEN + strlen(MOS_DIR_NAME) + 1,
241990b485lling				    KM_SLEEP);
242990b485lling				dsl_dataset_name(ds, strval);
243990b485lling				dsl_dataset_close(ds, DS_MODE_NONE, FTAG);
244990b485lling				rw_exit(&dp->dp_config_rwlock);
245990b485lling			} else {
246990b485lling				strval = NULL;
247990b485lling				intval = za.za_first_integer;
248990b485lling			}
249990b485lling
250990b485lling			err = spa_prop_add_list(*nvp, prop, strval,
251990b485lling			    intval, src);
252990b485lling
253990b485lling			if (strval != NULL)
254990b485lling				kmem_free(strval,
255990b485lling				    MAXNAMELEN + strlen(MOS_DIR_NAME) + 1);
256990b485lling
257990b485lling			break;
258990b485lling
259990b485lling		case 1:
260990b485lling			/* string property */
261990b485lling			strval = kmem_alloc(za.za_num_integers, KM_SLEEP);
262990b485lling			err = zap_lookup(mos, spa->spa_pool_props_object,
263990b485lling			    za.za_name, 1, za.za_num_integers, strval);
264990b485lling			if (err) {
265990b485lling				kmem_free(strval, za.za_num_integers);
266990b485lling				break;
267990b485lling			}
268990b485lling			err = spa_prop_add_list(*nvp, prop, strval, 0, src);
269990b485lling			kmem_free(strval, za.za_num_integers);
270990b485lling			break;
271990b485lling
272990b485lling		default:
273990b485lling			break;
274990b485lling		}
275990b485lling	}
276990b485lling	zap_cursor_fini(&zc);
277990b485lling	mutex_exit(&spa->spa_props_lock);
278990b485llingout:
279990b485lling	if (err && err != ENOENT) {
280990b485lling		nvlist_free(*nvp);
281990b485lling		return (err);
282990b485lling	}
283990b485lling
284990b485lling	return (0);
285990b485lling}
286990b485lling
287990b485lling/*
288990b485lling * Validate the given pool properties nvlist and modify the list
289990b485lling * for the property values to be set.
290990b485lling */
291990b485llingstatic int
292990b485llingspa_prop_validate(spa_t *spa, nvlist_t *props)
293990b485lling{
294990b485lling	nvpair_t *elem;
295990b485lling	int error = 0, reset_bootfs = 0;
296990b485lling	uint64_t objnum;
297990b485lling
298990b485lling	elem = NULL;
299990b485lling	while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
300990b485lling		zpool_prop_t prop;
301990b485lling		char *propname, *strval;
302990b485lling		uint64_t intval;
303990b485lling		vdev_t *rvdev;
304990b485lling		char *vdev_type;
305990b485lling		objset_t *os;
306990b485lling
307990b485lling		propname = nvpair_name(elem);
308990b485lling
309990b485lling		if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL)
310990b485lling			return (EINVAL);
311990b485lling
312990b485lling		switch (prop) {
313990b485lling		case ZPOOL_PROP_VERSION:
314990b485lling			error = nvpair_value_uint64(elem, &intval);
315990b485lling			if (!error &&
316990b485lling			    (intval < spa_version(spa) || intval > SPA_VERSION))
317990b485lling				error = EINVAL;
318990b485lling			break;
319990b485lling
320990b485lling		case ZPOOL_PROP_DELEGATION:
321990b485lling		case ZPOOL_PROP_AUTOREPLACE:
322990b485lling			error = nvpair_value_uint64(elem, &intval);
323990b485lling			if (!error && intval > 1)
324990b485lling				error = EINVAL;
325990b485lling			break;
326990b485lling
327990b485lling		case ZPOOL_PROP_BOOTFS:
328990b485lling			if (spa_version(spa) < SPA_VERSION_BOOTFS) {
329990b485lling				error = ENOTSUP;
330990b485lling				break;
331990b485lling			}
332990b485lling
333990b485lling			/*
334990b485lling			 * A bootable filesystem can not be on a RAIDZ pool
335990b485lling			 * nor a striped pool with more than 1 device.
336990b485lling			 */
337990b485lling			rvdev = spa->spa_root_vdev;
338990b485lling			vdev_type =
339990b485lling			    rvdev->vdev_child[0]->vdev_ops->vdev_op_type;
340990b485lling			if (rvdev->vdev_children > 1 ||
341990b485lling			    strcmp(vdev_type, VDEV_TYPE_RAIDZ) == 0 ||
342990b485lling			    strcmp(vdev_type, VDEV_TYPE_MISSING) == 0) {
343990b485lling				error = ENOTSUP;
344990b485lling				break;
345990b485lling			}
346990b485lling
347990b485lling			reset_bootfs = 1;
348990b485lling
349990b485lling			error = nvpair_value_string(elem, &strval);
350990b485lling
351990b485lling			if (!error) {
352990b485lling				if (strval == NULL || strval[0] == '\0') {
353990b485lling					objnum = zpool_prop_default_numeric(
354990b485lling					    ZPOOL_PROP_BOOTFS);
355990b485lling					break;
356990b485lling				}
357990b485lling
358990b485lling				if (error = dmu_objset_open(strval, DMU_OST_ZFS,
359990b485lling				    DS_MODE_STANDARD | DS_MODE_READONLY, &os))
360990b485lling					break;
361990b485lling				objnum = dmu_objset_id(os);
362990b485lling				dmu_objset_close(os);
363990b485lling			}
364990b485lling			break;
3650a4e951gw		case ZPOOL_PROP_FAILUREMODE:
3660a4e951gw			error = nvpair_value_uint64(elem, &intval);
3670a4e951gw			if (!error && (intval < ZIO_FAILURE_MODE_WAIT ||
3680a4e951gw			    intval > ZIO_FAILURE_MODE_PANIC))
3690a4e951gw				error = EINVAL;
3700a4e951gw
3710a4e951gw			/*
3720a4e951gw			 * This is a special case which only occurs when
3730a4e951gw			 * the pool has completely failed. This allows
3740a4e951gw			 * the user to change the in-core failmode property
3750a4e951gw			 * without syncing it out to disk (I/Os might
3760a4e951gw			 * currently be blocked). We do this by returning
3770a4e951gw			 * EIO to the caller (spa_prop_set) to trick it
3780a4e951gw			 * into thinking we encountered a property validation
3790a4e951gw			 * error.
3800a4e951gw			 */
3810a4e951gw			if (!error && spa_state(spa) == POOL_STATE_IO_FAILURE) {
3820a4e951gw				spa->spa_failmode = intval;
3830a4e951gw				error = EIO;
3840a4e951gw			}
3850a4e951gw			break;
386990b485lling		}
387990b485lling
388990b485lling		if (error)
389990b485lling			break;
390990b485lling	}
391990b485lling
392990b485lling	if (!error && reset_bootfs) {
393990b485lling		error = nvlist_remove(props,
394990b485lling		    zpool_prop_to_name(ZPOOL_PROP_BOOTFS), DATA_TYPE_STRING);
395990b485lling
396990b485lling		if (!error) {
397990b485lling			error = nvlist_add_uint64(props,
398990b485lling			    zpool_prop_to_name(ZPOOL_PROP_BOOTFS), objnum);
399990b485lling		}
400990b485lling	}
401990b485lling
402990b485lling	return (error);
403990b485lling}
404990b485lling
405990b485llingint
406990b485llingspa_prop_set(spa_t *spa, nvlist_t *nvp)
407990b485lling{
408990b485lling	int error;
409990b485lling
410990b485lling	if ((error = spa_prop_validate(spa, nvp)) != 0)
411990b485lling		return (error);
412990b485lling
413990b485lling	return (dsl_sync_task_do(spa_get_dsl(spa), NULL, spa_sync_props,
414990b485lling	    spa, nvp, 3));
415990b485lling}
416990b485lling
417990b485lling/*
418990b485lling * If the bootfs property value is dsobj, clear it.
419990b485lling */
420990b485llingvoid
421990b485llingspa_prop_clear_bootfs(spa_t *spa, uint64_t dsobj, dmu_tx_t *tx)
422990b485lling{
423990b485lling	if (spa->spa_bootfs == dsobj && spa->spa_pool_props_object != 0) {
424990b485lling		VERIFY(zap_remove(spa->spa_meta_objset,
425990b485lling		    spa->spa_pool_props_object,
426990b485lling		    zpool_prop_to_name(ZPOOL_PROP_BOOTFS), tx) == 0);
427990b485lling		spa->spa_bootfs = 0;
428990b485lling	}
429990b485lling}
430990b485lling
431fa9e406ahrens/*
432fa9e406ahrens * ==========================================================================
433fa9e406ahrens * SPA state manipulation (open/create/destroy/import/export)
434fa9e406ahrens * ==========================================================================
435fa9e406ahrens */
436fa9e406ahrens
437ea8dc4beschrockstatic int
438ea8dc4beschrockspa_error_entry_compare(const void *a, const void *b)
439ea8dc4beschrock{
440ea8dc4beschrock	spa_error_entry_t *sa = (spa_error_entry_t *)a;
441ea8dc4beschrock	spa_error_entry_t *sb = (spa_error_entry_t *)b;
442ea8dc4beschrock	int ret;
443ea8dc4beschrock
444ea8dc4beschrock	ret = bcmp(&sa->se_bookmark, &sb->se_bookmark,
445ea8dc4beschrock	    sizeof (zbookmark_t));
446ea8dc4beschrock
447ea8dc4beschrock	if (ret < 0)
448ea8dc4beschrock		return (-1);
449ea8dc4beschrock	else if (ret > 0)
450ea8dc4beschrock		return (1);
451ea8dc4beschrock	else
452ea8dc4beschrock		return (0);
453ea8dc4beschrock}
454ea8dc4beschrock
455ea8dc4beschrock/*
456ea8dc4beschrock * Utility function which retrieves copies of the current logs and
457ea8dc4beschrock * re-initializes them in the process.
458ea8dc4beschrock */
459ea8dc4beschrockvoid
460ea8dc4beschrockspa_get_errlists(spa_t *spa, avl_tree_t *last, avl_tree_t *scrub)
461ea8dc4beschrock{
462ea8dc4beschrock	ASSERT(MUTEX_HELD(&spa->spa_errlist_lock));
463ea8dc4beschrock
464ea8dc4beschrock	bcopy(&spa->spa_errlist_last, last, sizeof (avl_tree_t));
465ea8dc4beschrock	bcopy(&spa->spa_errlist_scrub, scrub, sizeof (avl_tree_t));
466ea8dc4beschrock
467ea8dc4beschrock	avl_create(&spa->spa_errlist_scrub,
468ea8dc4beschrock	    spa_error_entry_compare, sizeof (spa_error_entry_t),
469ea8dc4beschrock	    offsetof(spa_error_entry_t, se_avl));
470ea8dc4beschrock	avl_create(&spa->spa_errlist_last,
471ea8dc4beschrock	    spa_error_entry_compare, sizeof (spa_error_entry_t),
472ea8dc4beschrock	    offsetof(spa_error_entry_t, se_avl));
473ea8dc4beschrock}
474ea8dc4beschrock
475fa9e406ahrens/*
476fa9e406ahrens * Activate an uninitialized pool.
477fa9e406ahrens */
478fa9e406ahrensstatic void
479fa9e406ahrensspa_activate(spa_t *spa)
480fa9e406ahrens{
481fa9e406ahrens	int t;
482fa9e406ahrens
483fa9e406ahrens	ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED);
484fa9e406ahrens
485fa9e406ahrens	spa->spa_state = POOL_STATE_ACTIVE;
486fa9e406ahrens
487fa9e406ahrens	spa->spa_normal_class = metaslab_class_create();
4888654d02perrin	spa->spa_log_class = metaslab_class_create();
489fa9e406ahrens
490fa9e406ahrens	for (t = 0; t < ZIO_TYPES; t++) {
491fa9e406ahrens		spa->spa_zio_issue_taskq[t] = taskq_create("spa_zio_issue",
492416e0cdek		    zio_taskq_threads, maxclsyspri, 50, INT_MAX,
493fa9e406ahrens		    TASKQ_PREPOPULATE);
494fa9e406ahrens		spa->spa_zio_intr_taskq[t] = taskq_create("spa_zio_intr",
495416e0cdek		    zio_taskq_threads, maxclsyspri, 50, INT_MAX,
496fa9e406ahrens		    TASKQ_PREPOPULATE);
497fa9e406ahrens	}
498fa9e406ahrens
499fa9e406ahrens	list_create(&spa->spa_dirty_list, sizeof (vdev_t),
500fa9e406ahrens	    offsetof(vdev_t, vdev_dirty_node));
5010a4e951gw	list_create(&spa->spa_zio_list, sizeof (zio_t),
5020a4e951gw	    offsetof(zio_t, zio_link_node));
503fa9e406ahrens
504fa9e406ahrens	txg_list_create(&spa->spa_vdev_txg_list,
505fa9e406ahrens	    offsetof(struct vdev, vdev_txg_node));
506ea8dc4beschrock
507ea8dc4beschrock	avl_create(&spa->spa_errlist_scrub,
508ea8dc4beschrock	    spa_error_entry_compare, sizeof (spa_error_entry_t),
509ea8dc4beschrock	    offsetof(spa_error_entry_t, se_avl));
510ea8dc4beschrock	avl_create(&spa->spa_errlist_last,
511ea8dc4beschrock	    spa_error_entry_compare, sizeof (spa_error_entry_t),
512ea8dc4beschrock	    offsetof(spa_error_entry_t, se_avl));
513fa9e406ahrens}
514fa9e406ahrens
515fa9e406ahrens/*
516fa9e406ahrens * Opposite of spa_activate().
517fa9e406ahrens */
518fa9e406ahrensstatic void
519fa9e406ahrensspa_deactivate(spa_t *spa)
520fa9e406ahrens{
521fa9e406ahrens	int t;
522fa9e406ahrens
523fa9e406ahrens	ASSERT(spa->spa_sync_on == B_FALSE);
524fa9e406ahrens	ASSERT(spa->spa_dsl_pool == NULL);
525fa9e406ahrens	ASSERT(spa->spa_root_vdev == NULL);
526fa9e406ahrens
527fa9e406ahrens	ASSERT(spa->spa_state != POOL_STATE_UNINITIALIZED);
528fa9e406ahrens
529fa9e406ahrens	txg_list_destroy(&spa->spa_vdev_txg_list);
530fa9e406ahrens
531fa9e406ahrens	list_destroy(&spa->spa_dirty_list);
5320a4e951gw	list_destroy(&spa->spa_zio_list);
533fa9e406ahrens
534fa9e406ahrens	for (t = 0; t < ZIO_TYPES; t++) {
535fa9e406ahrens		taskq_destroy(spa->spa_zio_issue_taskq[t]);
536fa9e406ahrens		taskq_destroy(spa->spa_zio_intr_taskq[t]);
537fa9e406ahrens		spa->spa_zio_issue_taskq[t] = NULL;
538fa9e406ahrens		spa->spa_zio_intr_taskq[t] = NULL;
539fa9e406ahrens	}
540fa9e406ahrens
541fa9e406ahrens	metaslab_class_destroy(spa->spa_normal_class);
542fa9e406ahrens	spa->spa_normal_class = NULL;
543fa9e406ahrens
5448654d02perrin	metaslab_class_destroy(spa->spa_log_class);
5458654d02perrin	spa->spa_log_class = NULL;
5468654d02perrin
547ea8dc4beschrock	/*
548ea8dc4beschrock	 * If this was part of an import or the open otherwise failed, we may
549ea8dc4beschrock	 * still have errors left in the queues.  Empty them just in case.
550ea8dc4beschrock	 */
551ea8dc4beschrock	spa_errlog_drain(spa);
552ea8dc4beschrock
553ea8dc4beschrock	avl_destroy(&spa->spa_errlist_scrub);
554ea8dc4beschrock	avl_destroy(&spa->spa_errlist_last);
555ea8dc4beschrock
556fa9e406ahrens	spa->spa_state = POOL_STATE_UNINITIALIZED;
557fa9e406ahrens}
558fa9e406ahrens
559fa9e406ahrens/*
560fa9e406ahrens * Verify a pool configuration, and construct the vdev tree appropriately.  This
561fa9e406ahrens * will create all the necessary vdevs in the appropriate layout, with each vdev
562fa9e406ahrens * in the CLOSED state.  This will prep the pool before open/creation/import.
563fa9e406ahrens * All vdev validation is done by the vdev_alloc() routine.
564fa9e406ahrens */
56599653d4eschrockstatic int
56699653d4eschrockspa_config_parse(spa_t *spa, vdev_t **vdp, nvlist_t *nv, vdev_t *parent,
56799653d4eschrock    uint_t id, int atype)
568fa9e406ahrens{
569fa9e406ahrens	nvlist_t **child;
570fa9e406ahrens	uint_t c, children;
57199653d4eschrock	int error;
572fa9e406ahrens
57399653d4eschrock	if ((error = vdev_alloc(spa, vdp, nv, parent, id, atype)) != 0)
57499653d4eschrock		return (error);
575fa9e406ahrens
57699653d4eschrock	if ((*vdp)->vdev_ops->vdev_op_leaf)
57799653d4eschrock		return (0);
578fa9e406ahrens
579fa9e406ahrens	if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
580fa9e406ahrens	    &child, &children) != 0) {
58199653d4eschrock		vdev_free(*vdp);
582