spa_impl.h revision 088f389458728c464569a5506b58070254fa4f7d
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/*
22c5904d1eschrock * Copyright 2008 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
46ea8dc4beschrocktypedef struct spa_error_entry {
47ea8dc4beschrock	zbookmark_t	se_bookmark;
48ea8dc4beschrock	char		*se_name;
49ea8dc4beschrock	avl_node_t	se_avl;
50ea8dc4beschrock} spa_error_entry_t;
51ea8dc4beschrock
5206eeb2aektypedef struct spa_history_phys {
5306eeb2aek	uint64_t sh_pool_create_len;	/* ending offset of zpool create */
5406eeb2aek	uint64_t sh_phys_max_off;	/* physical EOF */
5506eeb2aek	uint64_t sh_bof;		/* logical BOF */
5606eeb2aek	uint64_t sh_eof;		/* logical EOF */
5706eeb2aek	uint64_t sh_records_lost;	/* num of records overwritten */
5806eeb2aek} spa_history_phys_t;
5906eeb2aek
60fa94a07brendanstruct spa_aux_vdev {
61fa94a07brendan	uint64_t	sav_object;		/* MOS object for device list */
62fa94a07brendan	nvlist_t	*sav_config;		/* cached device config */
63fa94a07brendan	vdev_t		**sav_vdevs;		/* devices */
64fa94a07brendan	int		sav_count;		/* number devices */
65fa94a07brendan	boolean_t	sav_sync;		/* sync the device list */
66fa94a07brendan	nvlist_t	**sav_pending;		/* pending device additions */
67fa94a07brendan	uint_t		sav_npending;		/* # pending devices */
68fa94a07brendan};
69fa94a07brendan
70e05725bbonwicktypedef struct spa_config_lock {
71e05725bbonwick	kmutex_t	scl_lock;
72e05725bbonwick	kthread_t	*scl_writer;
73e05725bbonwick	uint16_t	scl_write_wanted;
74e05725bbonwick	kcondvar_t	scl_cv;
75e05725bbonwick	refcount_t	scl_count;
76e05725bbonwick} spa_config_lock_t;
77e05725bbonwick
78c5904d1eschrocktypedef struct spa_config_dirent {
79c5904d1eschrock	list_node_t	scd_link;
80c5904d1eschrock	char		*scd_path;
81c5904d1eschrock} spa_config_dirent_t;
82c5904d1eschrock
83fa9e406ahrensstruct spa {
84fa9e406ahrens	/*
85fa9e406ahrens	 * Fields protected by spa_namespace_lock.
86fa9e406ahrens	 */
870373e76bonwick	char		*spa_name;		/* pool name */
880373e76bonwick	avl_node_t	spa_avl;		/* node in spa_namespace_avl */
890373e76bonwick	nvlist_t	*spa_config;		/* last synced config */
900373e76bonwick	nvlist_t	*spa_config_syncing;	/* currently syncing config */
91fa9e406ahrens	uint64_t	spa_config_txg;		/* txg of last config change */
92fa9e406ahrens	kmutex_t	spa_config_cache_lock;	/* for spa_config RW_READER */
93fa9e406ahrens	int		spa_sync_pass;		/* iterate-to-convergence */
94fa9e406ahrens	int		spa_state;		/* pool state */
95ea8dc4beschrock	int		spa_inject_ref;		/* injection references */
96fa9e406ahrens	uint8_t		spa_traverse_wanted;	/* traverse lock wanted */
97ea8dc4beschrock	uint8_t		spa_sync_on;		/* sync threads are running */
98ea8dc4beschrock	spa_load_state_t spa_load_state;	/* current load operation */
99fa9e406ahrens	taskq_t		*spa_zio_issue_taskq[ZIO_TYPES];
100fa9e406ahrens	taskq_t		*spa_zio_intr_taskq[ZIO_TYPES];
101fa9e406ahrens	dsl_pool_t	*spa_dsl_pool;
102fa9e406ahrens	metaslab_class_t *spa_normal_class;	/* normal data class */
1038654d02perrin	metaslab_class_t *spa_log_class;	/* intent log data class */
104fa9e406ahrens	uint64_t	spa_first_txg;		/* first txg after spa_open() */
1050373e76bonwick	uint64_t	spa_final_txg;		/* txg of export/destroy */
106fa9e406ahrens	uint64_t	spa_freeze_txg;		/* freeze pool at this txg */
107fa9e406ahrens	objset_t	*spa_meta_objset;	/* copy of dp->dp_meta_objset */
108fa9e406ahrens	txg_list_t	spa_vdev_txg_list;	/* per-txg dirty vdev list */
109fa9e406ahrens	vdev_t		*spa_root_vdev;		/* top-level vdev container */
110b5989eceschrock	uint64_t	spa_load_guid;		/* initial guid for spa_load */
111fa9e406ahrens	list_t		spa_dirty_list;		/* vdevs with dirty labels */
112fa94a07brendan	spa_aux_vdev_t	spa_spares;		/* hot spares */
113fa94a07brendan	spa_aux_vdev_t	spa_l2cache;		/* L2ARC cache devices */
114fa9e406ahrens	uint64_t	spa_config_object;	/* MOS object for pool config */
115fa9e406ahrens	uint64_t	spa_syncing_txg;	/* txg currently syncing */
116fa9e406ahrens	uint64_t	spa_sync_bplist_obj;	/* object for deferred frees */
117fa9e406ahrens	bplist_t	spa_sync_bplist;	/* deferred-free bplist */
118fa9e406ahrens	krwlock_t	spa_traverse_lock;	/* traverse vs. spa_sync() */
119fa9e406ahrens	uberblock_t	spa_ubsync;		/* last synced uberblock */
120fa9e406ahrens	uberblock_t	spa_uberblock;		/* current uberblock */
121fa9e406ahrens	kmutex_t	spa_scrub_lock;		/* resilver/scrub lock */
122fa9e406ahrens	uint64_t	spa_scrub_inflight;	/* in-flight scrub I/Os */
12305b2b3bmishra	uint64_t	spa_scrub_maxinflight;	/* max in-flight scrub I/Os */
124fa9e406ahrens	uint64_t	spa_scrub_errors;	/* scrub I/O error count */
125fa9e406ahrens	kcondvar_t	spa_scrub_io_cv;	/* scrub I/O completion */
126fa9e406ahrens	uint8_t		spa_scrub_active;	/* active or suspended? */
127fa9e406ahrens	uint8_t		spa_scrub_type;		/* type of scrub we're doing */
1280373e76bonwick	uint8_t		spa_scrub_finished;	/* indicator to rotate logs */
129088f389ahrens	uint8_t		spa_scrub_started;	/* started since last boot */
130088f389ahrens	uint8_t		spa_scrub_reopen;	/* scrub doing vdev_reopen */
131ea8dc4beschrock	kmutex_t	spa_async_lock;		/* protect async state */
132ea8dc4beschrock	kthread_t	*spa_async_thread;	/* thread doing async task */
133ea8dc4beschrock	int		spa_async_suspended;	/* async tasks suspended */
134ea8dc4beschrock	kcondvar_t	spa_async_cv;		/* wait for thread_exit() */
135ea8dc4beschrock	uint16_t	spa_async_tasks;	/* async task mask */
136fa9e406ahrens	char		*spa_root;		/* alternate root directory */
137fa9e406ahrens	kmutex_t	spa_uberblock_lock;	/* vdev_uberblock_load_done() */
138ea8dc4beschrock	uint64_t	spa_ena;		/* spa-wide ereport ENA */
139ea8dc4beschrock	boolean_t	spa_last_open_failed;	/* true if last open faled */
140ea8dc4beschrock	kmutex_t	spa_errlog_lock;	/* error log lock */
141ea8dc4beschrock	uint64_t	spa_errlog_last;	/* last error log object */
142ea8dc4beschrock	uint64_t	spa_errlog_scrub;	/* scrub error log object */
143ea8dc4beschrock	kmutex_t	spa_errlist_lock;	/* error list/ereport lock */
144ea8dc4beschrock	avl_tree_t	spa_errlist_last;	/* last error list */
145ea8dc4beschrock	avl_tree_t	spa_errlist_scrub;	/* scrub error list */
14699653d4eschrock	uint64_t	spa_deflate;		/* should we deflate? */
14706eeb2aek	uint64_t	spa_history;		/* history object */
14806eeb2aek	kmutex_t	spa_history_lock;	/* history lock */
14939c2341eschrock	vdev_t		*spa_pending_vdev;	/* pending vdev additions */
150b1b8ab3lling	kmutex_t	spa_props_lock;		/* property lock */
151b1b8ab3lling	uint64_t	spa_pool_props_object;	/* object for properties */
152b1b8ab3lling	uint64_t	spa_bootfs;		/* default boot filesystem */
153ecd6cf8marks	boolean_t	spa_delegation;		/* delegation on/off */
154c5904d1eschrock	list_t		spa_config_list;	/* previous cache file(s) */
1550a4e951gw	list_t		spa_zio_list;		/* zio error list */
1560a4e951gw	kcondvar_t	spa_zio_cv;		/* resume I/O pipeline */
1570a4e951gw	kmutex_t	spa_zio_lock;		/* zio error lock */
1580a4e951gw	uint8_t		spa_failmode;		/* failure mode for the pool */
159c5904d1eschrock	boolean_t	spa_import_faulted;	/* allow faulted vdevs */
160bf82a41eschrock	boolean_t	spa_is_root;		/* pool is root */
161088f389ahrens	int		spa_minref;		/* num refs when first opened */
162fa9e406ahrens	/*
16391ebeefahrens	 * spa_refcnt & spa_config_lock must be the last elements
16491ebeefahrens	 * because refcount_t changes size based on compilation options.
16591ebeefahrens	 * In order for the MDB module to function correctly, the other
16691ebeefahrens	 * fields must remain in the same location.
167fa9e406ahrens	 */
168e05725bbonwick	spa_config_lock_t spa_config_lock;	/* configuration changes */
169fa9e406ahrens	refcount_t	spa_refcount;		/* number of opens */
170fa9e406ahrens};
171fa9e406ahrens
172c5904d1eschrockextern const char *spa_config_path;
173fa9e406ahrens
17415e6edfgw#define	BOOTFS_COMPRESS_VALID(compress) \
17515e6edfgw	((compress) == ZIO_COMPRESS_LZJB || \
17615e6edfgw	((compress) == ZIO_COMPRESS_ON && \
17715e6edfgw	ZIO_COMPRESS_ON_VALUE == ZIO_COMPRESS_LZJB) || \
17815e6edfgw	(compress) == ZIO_COMPRESS_OFF)
17915e6edfgw
180fa9e406ahrens#ifdef	__cplusplus
181fa9e406ahrens}
182fa9e406ahrens#endif
183fa9e406ahrens
184fa9e406ahrens#endif	/* _SYS_SPA_IMPL_H */
185