spa_impl.h revision b5989ec7cd031c9bb066c68877fb5017e45f205b
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
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 */
22ea8dc4beschrock * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23fa9e406ahrens * Use is subject to license terms.
24fa9e406ahrens */
26fa9e406ahrens#ifndef _SYS_SPA_IMPL_H
27fa9e406ahrens#define	_SYS_SPA_IMPL_H
29fa9e406ahrens#pragma ident	"%Z%%M%	%I%	%E% SMI"
31fa9e406ahrens#include <sys/spa.h>
32fa9e406ahrens#include <sys/vdev.h>
33fa9e406ahrens#include <sys/metaslab.h>
34fa9e406ahrens#include <sys/dmu.h>
35fa9e406ahrens#include <sys/dsl_pool.h>
36fa9e406ahrens#include <sys/uberblock_impl.h>
37fa9e406ahrens#include <sys/zfs_context.h>
38fa9e406ahrens#include <sys/avl.h>
39fa9e406ahrens#include <sys/refcount.h>
40fa9e406ahrens#include <sys/bplist.h>
42fa9e406ahrens#ifdef	__cplusplus
43fa9e406ahrensextern "C" {
46fa9e406ahrenstypedef struct spa_config_lock {
47fa9e406ahrens	kmutex_t	scl_lock;
48ea8dc4beschrock	refcount_t	scl_count;
49fa9e406ahrens	kthread_t	*scl_writer;
50fa9e406ahrens	kcondvar_t	scl_cv;
51fa9e406ahrens} spa_config_lock_t;
53ea8dc4beschrocktypedef struct spa_error_entry {
54ea8dc4beschrock	zbookmark_t	se_bookmark;
55ea8dc4beschrock	char		*se_name;
56ea8dc4beschrock	avl_node_t	se_avl;
57ea8dc4beschrock} spa_error_entry_t;
59fa9e406ahrensstruct spa {
60fa9e406ahrens	/*
61fa9e406ahrens	 * Fields protected by spa_namespace_lock.
62fa9e406ahrens	 */
630373e76bonwick	char		*spa_name;		/* pool name */
640373e76bonwick	avl_node_t	spa_avl;		/* node in spa_namespace_avl */
650373e76bonwick	nvlist_t	*spa_config;		/* last synced config */
660373e76bonwick	nvlist_t	*spa_config_syncing;	/* currently syncing config */
67fa9e406ahrens	uint64_t	spa_config_txg;		/* txg of last config change */
68fa9e406ahrens	kmutex_t	spa_config_cache_lock;	/* for spa_config RW_READER */
69fa9e406ahrens	int		spa_sync_pass;		/* iterate-to-convergence */
70fa9e406ahrens	int		spa_state;		/* pool state */
71ea8dc4beschrock	int		spa_inject_ref;		/* injection references */
72fa9e406ahrens	uint8_t		spa_traverse_wanted;	/* traverse lock wanted */
73ea8dc4beschrock	uint8_t		spa_sync_on;		/* sync threads are running */
74ea8dc4beschrock	spa_load_state_t spa_load_state;	/* current load operation */
75fa9e406ahrens	taskq_t		*spa_zio_issue_taskq[ZIO_TYPES];
76fa9e406ahrens	taskq_t		*spa_zio_intr_taskq[ZIO_TYPES];
77fa9e406ahrens	dsl_pool_t	*spa_dsl_pool;
78fa9e406ahrens	metaslab_class_t *spa_normal_class;	/* normal data class */
79fa9e406ahrens	uint64_t	spa_first_txg;		/* first txg after spa_open() */
800373e76bonwick	uint64_t	spa_final_txg;		/* txg of export/destroy */
81fa9e406ahrens	uint64_t	spa_freeze_txg;		/* freeze pool at this txg */
82fa9e406ahrens	objset_t	*spa_meta_objset;	/* copy of dp->dp_meta_objset */
83fa9e406ahrens	txg_list_t	spa_vdev_txg_list;	/* per-txg dirty vdev list */
84fa9e406ahrens	vdev_t		*spa_root_vdev;		/* top-level vdev container */
85b5989eceschrock	uint64_t	spa_load_guid;		/* initial guid for spa_load */
86fa9e406ahrens	list_t		spa_dirty_list;		/* vdevs with dirty labels */
8799653d4eschrock	uint64_t	spa_spares_object;	/* MOS object for spare list */
8899653d4eschrock	nvlist_t	*spa_sparelist;		/* cached spare config */
8999653d4eschrock	vdev_t		**spa_spares;		/* available hot spares */
9099653d4eschrock	int		spa_nspares;		/* number of hot spares */
9199653d4eschrock	boolean_t	spa_sync_spares;	/* sync the spares list */
92fa9e406ahrens	uint64_t	spa_config_object;	/* MOS object for pool config */
93fa9e406ahrens	uint64_t	spa_syncing_txg;	/* txg currently syncing */
94fa9e406ahrens	uint64_t	spa_sync_bplist_obj;	/* object for deferred frees */
95fa9e406ahrens	bplist_t	spa_sync_bplist;	/* deferred-free bplist */
96fa9e406ahrens	krwlock_t	spa_traverse_lock;	/* traverse vs. spa_sync() */
97fa9e406ahrens	uberblock_t	spa_ubsync;		/* last synced uberblock */
98fa9e406ahrens	uberblock_t	spa_uberblock;		/* current uberblock */
99fa9e406ahrens	kmutex_t	spa_scrub_lock;		/* resilver/scrub lock */
100fa9e406ahrens	kthread_t	*spa_scrub_thread;	/* scrub/resilver thread */
101fa9e406ahrens	traverse_handle_t *spa_scrub_th;	/* scrub traverse handle */
102fa9e406ahrens	uint64_t	spa_scrub_restart_txg;	/* need to restart */
103ea8dc4beschrock	uint64_t	spa_scrub_mintxg;	/* min txg we'll scrub */
104fa9e406ahrens	uint64_t	spa_scrub_maxtxg;	/* max txg we'll scrub */
105fa9e406ahrens	uint64_t	spa_scrub_inflight;	/* in-flight scrub I/Os */
106ea8dc4beschrock	int64_t		spa_scrub_throttled;	/* over-throttle scrub I/Os */
107fa9e406ahrens	uint64_t	spa_scrub_errors;	/* scrub I/O error count */
108ea8dc4beschrock	int		spa_scrub_suspended;	/* tell scrubber to suspend */
109fa9e406ahrens	kcondvar_t	spa_scrub_cv;		/* scrub thread state change */
110fa9e406ahrens	kcondvar_t	spa_scrub_io_cv;	/* scrub I/O completion */
111fa9e406ahrens	uint8_t		spa_scrub_stop;		/* tell scrubber to stop */
112fa9e406ahrens	uint8_t		spa_scrub_active;	/* active or suspended? */
113fa9e406ahrens	uint8_t		spa_scrub_type;		/* type of scrub we're doing */
1140373e76bonwick	uint8_t		spa_scrub_finished;	/* indicator to rotate logs */
115ea8dc4beschrock	kmutex_t	spa_async_lock;		/* protect async state */
116ea8dc4beschrock	kthread_t	*spa_async_thread;	/* thread doing async task */
117ea8dc4beschrock	int		spa_async_suspended;	/* async tasks suspended */
118ea8dc4beschrock	kcondvar_t	spa_async_cv;		/* wait for thread_exit() */
119ea8dc4beschrock	uint16_t	spa_async_tasks;	/* async task mask */
120fa9e406ahrens	char		*spa_root;		/* alternate root directory */
121fa9e406ahrens	kmutex_t	spa_uberblock_lock;	/* vdev_uberblock_load_done() */
122ea8dc4beschrock	uint64_t	spa_ena;		/* spa-wide ereport ENA */
123ea8dc4beschrock	boolean_t	spa_last_open_failed;	/* true if last open faled */
124ea8dc4beschrock	kmutex_t	spa_errlog_lock;	/* error log lock */
125ea8dc4beschrock	uint64_t	spa_errlog_last;	/* last error log object */
126ea8dc4beschrock	uint64_t	spa_errlog_scrub;	/* scrub error log object */
127ea8dc4beschrock	kmutex_t	spa_errlist_lock;	/* error list/ereport lock */
128ea8dc4beschrock	avl_tree_t	spa_errlist_last;	/* last error list */
129ea8dc4beschrock	avl_tree_t	spa_errlist_scrub;	/* scrub error list */
13099653d4eschrock	uint64_t	spa_deflate;		/* should we deflate? */
131fa9e406ahrens	/*
132fa9e406ahrens	 * spa_refcnt must be the last element because it changes size based on
133fa9e406ahrens	 * compilation options.  In order for the MDB module to function
134fa9e406ahrens	 * correctly, the other fields must remain in the same location.
135fa9e406ahrens	 */
13699653d4eschrock	spa_config_lock_t spa_config_lock;	/* configuration changes */
137fa9e406ahrens	refcount_t	spa_refcount;		/* number of opens */
140fa9e406ahrensextern const char *spa_config_dir;
141fa9e406ahrensextern kmutex_t spa_namespace_lock;
143fa9e406ahrens#ifdef	__cplusplus
147fa9e406ahrens#endif	/* _SYS_SPA_IMPL_H */