spa_impl.h revision 06eeb2ad640ce72d394ac521094bed7681044408
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 */
21fa9e406ahrens/*
22ea8dc4beschrock * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23fa9e406ahrens * Use is subject to license terms.
24fa9e406ahrens */
25fa9e406ahrens
26fa9e406ahrens#ifndef _SYS_SPA_IMPL_H
27fa9e406ahrens#define	_SYS_SPA_IMPL_H
28fa9e406ahrens
29fa9e406ahrens#pragma ident	"%Z%%M%	%I%	%E% SMI"
30fa9e406ahrens
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>
41fa9e406ahrens
42fa9e406ahrens#ifdef	__cplusplus
43fa9e406ahrensextern "C" {
44fa9e406ahrens#endif
45fa9e406ahrens
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;
52fa9e406ahrens
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;
58ea8dc4beschrock
5906eeb2aektypedef struct spa_history_phys {
6006eeb2aek	uint64_t sh_pool_create_len;	/* ending offset of zpool create */
6106eeb2aek	uint64_t sh_phys_max_off;	/* physical EOF */
6206eeb2aek	uint64_t sh_bof;		/* logical BOF */
6306eeb2aek	uint64_t sh_eof;		/* logical EOF */
6406eeb2aek	uint64_t sh_records_lost;	/* num of records overwritten */
6506eeb2aek} spa_history_phys_t;
6606eeb2aek
67fa9e406ahrensstruct spa {
68fa9e406ahrens	/*
69fa9e406ahrens	 * Fields protected by spa_namespace_lock.
70fa9e406ahrens	 */
710373e76bonwick	char		*spa_name;		/* pool name */
720373e76bonwick	avl_node_t	spa_avl;		/* node in spa_namespace_avl */
730373e76bonwick	nvlist_t	*spa_config;		/* last synced config */
740373e76bonwick	nvlist_t	*spa_config_syncing;	/* currently syncing config */
75fa9e406ahrens	uint64_t	spa_config_txg;		/* txg of last config change */
76fa9e406ahrens	kmutex_t	spa_config_cache_lock;	/* for spa_config RW_READER */
77fa9e406ahrens	int		spa_sync_pass;		/* iterate-to-convergence */
78fa9e406ahrens	int		spa_state;		/* pool state */
79ea8dc4beschrock	int		spa_inject_ref;		/* injection references */
80fa9e406ahrens	uint8_t		spa_traverse_wanted;	/* traverse lock wanted */
81ea8dc4beschrock	uint8_t		spa_sync_on;		/* sync threads are running */
82ea8dc4beschrock	spa_load_state_t spa_load_state;	/* current load operation */
83fa9e406ahrens	taskq_t		*spa_zio_issue_taskq[ZIO_TYPES];
84fa9e406ahrens	taskq_t		*spa_zio_intr_taskq[ZIO_TYPES];
85fa9e406ahrens	dsl_pool_t	*spa_dsl_pool;
86fa9e406ahrens	metaslab_class_t *spa_normal_class;	/* normal data class */
87fa9e406ahrens	uint64_t	spa_first_txg;		/* first txg after spa_open() */
880373e76bonwick	uint64_t	spa_final_txg;		/* txg of export/destroy */
89fa9e406ahrens	uint64_t	spa_freeze_txg;		/* freeze pool at this txg */
90fa9e406ahrens	objset_t	*spa_meta_objset;	/* copy of dp->dp_meta_objset */
91fa9e406ahrens	txg_list_t	spa_vdev_txg_list;	/* per-txg dirty vdev list */
92fa9e406ahrens	vdev_t		*spa_root_vdev;		/* top-level vdev container */
93b5989eceschrock	uint64_t	spa_load_guid;		/* initial guid for spa_load */
94fa9e406ahrens	list_t		spa_dirty_list;		/* vdevs with dirty labels */
9599653d4eschrock	uint64_t	spa_spares_object;	/* MOS object for spare list */
9699653d4eschrock	nvlist_t	*spa_sparelist;		/* cached spare config */
9799653d4eschrock	vdev_t		**spa_spares;		/* available hot spares */
9899653d4eschrock	int		spa_nspares;		/* number of hot spares */
9999653d4eschrock	boolean_t	spa_sync_spares;	/* sync the spares list */
100fa9e406ahrens	uint64_t	spa_config_object;	/* MOS object for pool config */
101fa9e406ahrens	uint64_t	spa_syncing_txg;	/* txg currently syncing */
102fa9e406ahrens	uint64_t	spa_sync_bplist_obj;	/* object for deferred frees */
103fa9e406ahrens	bplist_t	spa_sync_bplist;	/* deferred-free bplist */
104fa9e406ahrens	krwlock_t	spa_traverse_lock;	/* traverse vs. spa_sync() */
105fa9e406ahrens	uberblock_t	spa_ubsync;		/* last synced uberblock */
106fa9e406ahrens	uberblock_t	spa_uberblock;		/* current uberblock */
107fa9e406ahrens	kmutex_t	spa_scrub_lock;		/* resilver/scrub lock */
108fa9e406ahrens	kthread_t	*spa_scrub_thread;	/* scrub/resilver thread */
109fa9e406ahrens	traverse_handle_t *spa_scrub_th;	/* scrub traverse handle */
110fa9e406ahrens	uint64_t	spa_scrub_restart_txg;	/* need to restart */
111ea8dc4beschrock	uint64_t	spa_scrub_mintxg;	/* min txg we'll scrub */
112fa9e406ahrens	uint64_t	spa_scrub_maxtxg;	/* max txg we'll scrub */
113fa9e406ahrens	uint64_t	spa_scrub_inflight;	/* in-flight scrub I/Os */
114ea8dc4beschrock	int64_t		spa_scrub_throttled;	/* over-throttle scrub I/Os */
115fa9e406ahrens	uint64_t	spa_scrub_errors;	/* scrub I/O error count */
116ea8dc4beschrock	int		spa_scrub_suspended;	/* tell scrubber to suspend */
117fa9e406ahrens	kcondvar_t	spa_scrub_cv;		/* scrub thread state change */
118fa9e406ahrens	kcondvar_t	spa_scrub_io_cv;	/* scrub I/O completion */
119fa9e406ahrens	uint8_t		spa_scrub_stop;		/* tell scrubber to stop */
120fa9e406ahrens	uint8_t		spa_scrub_active;	/* active or suspended? */
121fa9e406ahrens	uint8_t		spa_scrub_type;		/* type of scrub we're doing */
1220373e76bonwick	uint8_t		spa_scrub_finished;	/* indicator to rotate logs */
123ea8dc4beschrock	kmutex_t	spa_async_lock;		/* protect async state */
124ea8dc4beschrock	kthread_t	*spa_async_thread;	/* thread doing async task */
125ea8dc4beschrock	int		spa_async_suspended;	/* async tasks suspended */
126ea8dc4beschrock	kcondvar_t	spa_async_cv;		/* wait for thread_exit() */
127ea8dc4beschrock	uint16_t	spa_async_tasks;	/* async task mask */
128fa9e406ahrens	char		*spa_root;		/* alternate root directory */
129fa9e406ahrens	kmutex_t	spa_uberblock_lock;	/* vdev_uberblock_load_done() */
130ea8dc4beschrock	uint64_t	spa_ena;		/* spa-wide ereport ENA */
131ea8dc4beschrock	boolean_t	spa_last_open_failed;	/* true if last open faled */
132ea8dc4beschrock	kmutex_t	spa_errlog_lock;	/* error log lock */
133ea8dc4beschrock	uint64_t	spa_errlog_last;	/* last error log object */
134ea8dc4beschrock	uint64_t	spa_errlog_scrub;	/* scrub error log object */
135ea8dc4beschrock	kmutex_t	spa_errlist_lock;	/* error list/ereport lock */
136ea8dc4beschrock	avl_tree_t	spa_errlist_last;	/* last error list */
137ea8dc4beschrock	avl_tree_t	spa_errlist_scrub;	/* scrub error list */
13899653d4eschrock	uint64_t	spa_deflate;		/* should we deflate? */
13906eeb2aek	uint64_t	spa_history;		/* history object */
14006eeb2aek	kmutex_t	spa_history_lock;	/* history lock */
141fa9e406ahrens	/*
142fa9e406ahrens	 * spa_refcnt must be the last element because it changes size based on
143fa9e406ahrens	 * compilation options.  In order for the MDB module to function
144fa9e406ahrens	 * correctly, the other fields must remain in the same location.
145fa9e406ahrens	 */
14699653d4eschrock	spa_config_lock_t spa_config_lock;	/* configuration changes */
147fa9e406ahrens	refcount_t	spa_refcount;		/* number of opens */
148fa9e406ahrens};
149fa9e406ahrens
150fa9e406ahrensextern const char *spa_config_dir;
151fa9e406ahrensextern kmutex_t spa_namespace_lock;
152fa9e406ahrens
153fa9e406ahrens#ifdef	__cplusplus
154fa9e406ahrens}
155fa9e406ahrens#endif
156fa9e406ahrens
157fa9e406ahrens#endif	/* _SYS_SPA_IMPL_H */
158