spa_impl.h revision 39c23413b8df94a95f67b34cfd4a4dfc3fd0b48d
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 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _SYS_SPA_IMPL_H
27#define	_SYS_SPA_IMPL_H
28
29#pragma ident	"%Z%%M%	%I%	%E% SMI"
30
31#include <sys/spa.h>
32#include <sys/vdev.h>
33#include <sys/metaslab.h>
34#include <sys/dmu.h>
35#include <sys/dsl_pool.h>
36#include <sys/uberblock_impl.h>
37#include <sys/zfs_context.h>
38#include <sys/avl.h>
39#include <sys/refcount.h>
40#include <sys/bplist.h>
41
42#ifdef	__cplusplus
43extern "C" {
44#endif
45
46typedef struct spa_config_lock {
47	kmutex_t	scl_lock;
48	refcount_t	scl_count;
49	kthread_t	*scl_writer;
50	kcondvar_t	scl_cv;
51} spa_config_lock_t;
52
53typedef struct spa_error_entry {
54	zbookmark_t	se_bookmark;
55	char		*se_name;
56	avl_node_t	se_avl;
57} spa_error_entry_t;
58
59typedef struct spa_history_phys {
60	uint64_t sh_pool_create_len;	/* ending offset of zpool create */
61	uint64_t sh_phys_max_off;	/* physical EOF */
62	uint64_t sh_bof;		/* logical BOF */
63	uint64_t sh_eof;		/* logical EOF */
64	uint64_t sh_records_lost;	/* num of records overwritten */
65} spa_history_phys_t;
66
67struct spa {
68	/*
69	 * Fields protected by spa_namespace_lock.
70	 */
71	char		*spa_name;		/* pool name */
72	avl_node_t	spa_avl;		/* node in spa_namespace_avl */
73	nvlist_t	*spa_config;		/* last synced config */
74	nvlist_t	*spa_config_syncing;	/* currently syncing config */
75	uint64_t	spa_config_txg;		/* txg of last config change */
76	kmutex_t	spa_config_cache_lock;	/* for spa_config RW_READER */
77	int		spa_sync_pass;		/* iterate-to-convergence */
78	int		spa_state;		/* pool state */
79	int		spa_inject_ref;		/* injection references */
80	uint8_t		spa_traverse_wanted;	/* traverse lock wanted */
81	uint8_t		spa_sync_on;		/* sync threads are running */
82	spa_load_state_t spa_load_state;	/* current load operation */
83	taskq_t		*spa_zio_issue_taskq[ZIO_TYPES];
84	taskq_t		*spa_zio_intr_taskq[ZIO_TYPES];
85	dsl_pool_t	*spa_dsl_pool;
86	metaslab_class_t *spa_normal_class;	/* normal data class */
87	uint64_t	spa_first_txg;		/* first txg after spa_open() */
88	uint64_t	spa_final_txg;		/* txg of export/destroy */
89	uint64_t	spa_freeze_txg;		/* freeze pool at this txg */
90	objset_t	*spa_meta_objset;	/* copy of dp->dp_meta_objset */
91	txg_list_t	spa_vdev_txg_list;	/* per-txg dirty vdev list */
92	vdev_t		*spa_root_vdev;		/* top-level vdev container */
93	uint64_t	spa_load_guid;		/* initial guid for spa_load */
94	list_t		spa_dirty_list;		/* vdevs with dirty labels */
95	uint64_t	spa_spares_object;	/* MOS object for spare list */
96	nvlist_t	*spa_sparelist;		/* cached spare config */
97	vdev_t		**spa_spares;		/* available hot spares */
98	int		spa_nspares;		/* number of hot spares */
99	boolean_t	spa_sync_spares;	/* sync the spares list */
100	uint64_t	spa_config_object;	/* MOS object for pool config */
101	uint64_t	spa_syncing_txg;	/* txg currently syncing */
102	uint64_t	spa_sync_bplist_obj;	/* object for deferred frees */
103	bplist_t	spa_sync_bplist;	/* deferred-free bplist */
104	krwlock_t	spa_traverse_lock;	/* traverse vs. spa_sync() */
105	uberblock_t	spa_ubsync;		/* last synced uberblock */
106	uberblock_t	spa_uberblock;		/* current uberblock */
107	kmutex_t	spa_scrub_lock;		/* resilver/scrub lock */
108	kthread_t	*spa_scrub_thread;	/* scrub/resilver thread */
109	traverse_handle_t *spa_scrub_th;	/* scrub traverse handle */
110	uint64_t	spa_scrub_restart_txg;	/* need to restart */
111	uint64_t	spa_scrub_mintxg;	/* min txg we'll scrub */
112	uint64_t	spa_scrub_maxtxg;	/* max txg we'll scrub */
113	uint64_t	spa_scrub_inflight;	/* in-flight scrub I/Os */
114	int64_t		spa_scrub_throttled;	/* over-throttle scrub I/Os */
115	uint64_t	spa_scrub_errors;	/* scrub I/O error count */
116	int		spa_scrub_suspended;	/* tell scrubber to suspend */
117	kcondvar_t	spa_scrub_cv;		/* scrub thread state change */
118	kcondvar_t	spa_scrub_io_cv;	/* scrub I/O completion */
119	uint8_t		spa_scrub_stop;		/* tell scrubber to stop */
120	uint8_t		spa_scrub_active;	/* active or suspended? */
121	uint8_t		spa_scrub_type;		/* type of scrub we're doing */
122	uint8_t		spa_scrub_finished;	/* indicator to rotate logs */
123	kmutex_t	spa_async_lock;		/* protect async state */
124	kthread_t	*spa_async_thread;	/* thread doing async task */
125	int		spa_async_suspended;	/* async tasks suspended */
126	kcondvar_t	spa_async_cv;		/* wait for thread_exit() */
127	uint16_t	spa_async_tasks;	/* async task mask */
128	char		*spa_root;		/* alternate root directory */
129	kmutex_t	spa_uberblock_lock;	/* vdev_uberblock_load_done() */
130	uint64_t	spa_ena;		/* spa-wide ereport ENA */
131	boolean_t	spa_last_open_failed;	/* true if last open faled */
132	kmutex_t	spa_errlog_lock;	/* error log lock */
133	uint64_t	spa_errlog_last;	/* last error log object */
134	uint64_t	spa_errlog_scrub;	/* scrub error log object */
135	kmutex_t	spa_errlist_lock;	/* error list/ereport lock */
136	avl_tree_t	spa_errlist_last;	/* last error list */
137	avl_tree_t	spa_errlist_scrub;	/* scrub error list */
138	uint64_t	spa_deflate;		/* should we deflate? */
139	uint64_t	spa_history;		/* history object */
140	kmutex_t	spa_history_lock;	/* history lock */
141	vdev_t		*spa_pending_vdev;	/* pending vdev additions */
142	nvlist_t	**spa_pending_spares;	/* pending spare additions */
143	uint_t		spa_pending_nspares;	/* # pending spares */
144	/*
145	 * spa_refcnt must be the last element because it changes size based on
146	 * compilation options.  In order for the MDB module to function
147	 * correctly, the other fields must remain in the same location.
148	 */
149	spa_config_lock_t spa_config_lock;	/* configuration changes */
150	refcount_t	spa_refcount;		/* number of opens */
151};
152
153extern const char *spa_config_dir;
154extern kmutex_t spa_namespace_lock;
155
156#ifdef	__cplusplus
157}
158#endif
159
160#endif	/* _SYS_SPA_IMPL_H */
161