spa_impl.h revision 088f389458728c464569a5506b58070254fa4f7d
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 2008 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_error_entry {
47	zbookmark_t	se_bookmark;
48	char		*se_name;
49	avl_node_t	se_avl;
50} spa_error_entry_t;
51
52typedef struct spa_history_phys {
53	uint64_t sh_pool_create_len;	/* ending offset of zpool create */
54	uint64_t sh_phys_max_off;	/* physical EOF */
55	uint64_t sh_bof;		/* logical BOF */
56	uint64_t sh_eof;		/* logical EOF */
57	uint64_t sh_records_lost;	/* num of records overwritten */
58} spa_history_phys_t;
59
60struct spa_aux_vdev {
61	uint64_t	sav_object;		/* MOS object for device list */
62	nvlist_t	*sav_config;		/* cached device config */
63	vdev_t		**sav_vdevs;		/* devices */
64	int		sav_count;		/* number devices */
65	boolean_t	sav_sync;		/* sync the device list */
66	nvlist_t	**sav_pending;		/* pending device additions */
67	uint_t		sav_npending;		/* # pending devices */
68};
69
70typedef struct spa_config_lock {
71	kmutex_t	scl_lock;
72	kthread_t	*scl_writer;
73	uint16_t	scl_write_wanted;
74	kcondvar_t	scl_cv;
75	refcount_t	scl_count;
76} spa_config_lock_t;
77
78typedef struct spa_config_dirent {
79	list_node_t	scd_link;
80	char		*scd_path;
81} spa_config_dirent_t;
82
83struct spa {
84	/*
85	 * Fields protected by spa_namespace_lock.
86	 */
87	char		*spa_name;		/* pool name */
88	avl_node_t	spa_avl;		/* node in spa_namespace_avl */
89	nvlist_t	*spa_config;		/* last synced config */
90	nvlist_t	*spa_config_syncing;	/* currently syncing config */
91	uint64_t	spa_config_txg;		/* txg of last config change */
92	kmutex_t	spa_config_cache_lock;	/* for spa_config RW_READER */
93	int		spa_sync_pass;		/* iterate-to-convergence */
94	int		spa_state;		/* pool state */
95	int		spa_inject_ref;		/* injection references */
96	uint8_t		spa_traverse_wanted;	/* traverse lock wanted */
97	uint8_t		spa_sync_on;		/* sync threads are running */
98	spa_load_state_t spa_load_state;	/* current load operation */
99	taskq_t		*spa_zio_issue_taskq[ZIO_TYPES];
100	taskq_t		*spa_zio_intr_taskq[ZIO_TYPES];
101	dsl_pool_t	*spa_dsl_pool;
102	metaslab_class_t *spa_normal_class;	/* normal data class */
103	metaslab_class_t *spa_log_class;	/* intent log data class */
104	uint64_t	spa_first_txg;		/* first txg after spa_open() */
105	uint64_t	spa_final_txg;		/* txg of export/destroy */
106	uint64_t	spa_freeze_txg;		/* freeze pool at this txg */
107	objset_t	*spa_meta_objset;	/* copy of dp->dp_meta_objset */
108	txg_list_t	spa_vdev_txg_list;	/* per-txg dirty vdev list */
109	vdev_t		*spa_root_vdev;		/* top-level vdev container */
110	uint64_t	spa_load_guid;		/* initial guid for spa_load */
111	list_t		spa_dirty_list;		/* vdevs with dirty labels */
112	spa_aux_vdev_t	spa_spares;		/* hot spares */
113	spa_aux_vdev_t	spa_l2cache;		/* L2ARC cache devices */
114	uint64_t	spa_config_object;	/* MOS object for pool config */
115	uint64_t	spa_syncing_txg;	/* txg currently syncing */
116	uint64_t	spa_sync_bplist_obj;	/* object for deferred frees */
117	bplist_t	spa_sync_bplist;	/* deferred-free bplist */
118	krwlock_t	spa_traverse_lock;	/* traverse vs. spa_sync() */
119	uberblock_t	spa_ubsync;		/* last synced uberblock */
120	uberblock_t	spa_uberblock;		/* current uberblock */
121	kmutex_t	spa_scrub_lock;		/* resilver/scrub lock */
122	uint64_t	spa_scrub_inflight;	/* in-flight scrub I/Os */
123	uint64_t	spa_scrub_maxinflight;	/* max in-flight scrub I/Os */
124	uint64_t	spa_scrub_errors;	/* scrub I/O error count */
125	kcondvar_t	spa_scrub_io_cv;	/* scrub I/O completion */
126	uint8_t		spa_scrub_active;	/* active or suspended? */
127	uint8_t		spa_scrub_type;		/* type of scrub we're doing */
128	uint8_t		spa_scrub_finished;	/* indicator to rotate logs */
129	uint8_t		spa_scrub_started;	/* started since last boot */
130	uint8_t		spa_scrub_reopen;	/* scrub doing vdev_reopen */
131	kmutex_t	spa_async_lock;		/* protect async state */
132	kthread_t	*spa_async_thread;	/* thread doing async task */
133	int		spa_async_suspended;	/* async tasks suspended */
134	kcondvar_t	spa_async_cv;		/* wait for thread_exit() */
135	uint16_t	spa_async_tasks;	/* async task mask */
136	char		*spa_root;		/* alternate root directory */
137	kmutex_t	spa_uberblock_lock;	/* vdev_uberblock_load_done() */
138	uint64_t	spa_ena;		/* spa-wide ereport ENA */
139	boolean_t	spa_last_open_failed;	/* true if last open faled */
140	kmutex_t	spa_errlog_lock;	/* error log lock */
141	uint64_t	spa_errlog_last;	/* last error log object */
142	uint64_t	spa_errlog_scrub;	/* scrub error log object */
143	kmutex_t	spa_errlist_lock;	/* error list/ereport lock */
144	avl_tree_t	spa_errlist_last;	/* last error list */
145	avl_tree_t	spa_errlist_scrub;	/* scrub error list */
146	uint64_t	spa_deflate;		/* should we deflate? */
147	uint64_t	spa_history;		/* history object */
148	kmutex_t	spa_history_lock;	/* history lock */
149	vdev_t		*spa_pending_vdev;	/* pending vdev additions */
150	kmutex_t	spa_props_lock;		/* property lock */
151	uint64_t	spa_pool_props_object;	/* object for properties */
152	uint64_t	spa_bootfs;		/* default boot filesystem */
153	boolean_t	spa_delegation;		/* delegation on/off */
154	list_t		spa_config_list;	/* previous cache file(s) */
155	list_t		spa_zio_list;		/* zio error list */
156	kcondvar_t	spa_zio_cv;		/* resume I/O pipeline */
157	kmutex_t	spa_zio_lock;		/* zio error lock */
158	uint8_t		spa_failmode;		/* failure mode for the pool */
159	boolean_t	spa_import_faulted;	/* allow faulted vdevs */
160	boolean_t	spa_is_root;		/* pool is root */
161	int		spa_minref;		/* num refs when first opened */
162	/*
163	 * spa_refcnt & spa_config_lock must be the last elements
164	 * because refcount_t changes size based on compilation options.
165	 * In order for the MDB module to function correctly, the other
166	 * fields must remain in the same location.
167	 */
168	spa_config_lock_t spa_config_lock;	/* configuration changes */
169	refcount_t	spa_refcount;		/* number of opens */
170};
171
172extern const char *spa_config_path;
173
174#define	BOOTFS_COMPRESS_VALID(compress) \
175	((compress) == ZIO_COMPRESS_LZJB || \
176	((compress) == ZIO_COMPRESS_ON && \
177	ZIO_COMPRESS_ON_VALUE == ZIO_COMPRESS_LZJB) || \
178	(compress) == ZIO_COMPRESS_OFF)
179
180#ifdef	__cplusplus
181}
182#endif
183
184#endif	/* _SYS_SPA_IMPL_H */
185