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.
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.
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]
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #ifndef _SYS_SPA_IMPL_H
27 #define _SYS_SPA_IMPL_H
31 #include <sys/metaslab.h>
33 #include <sys/dsl_pool.h>
34 #include <sys/uberblock_impl.h>
35 #include <sys/zfs_context.h>
37 #include <sys/refcount.h>
38 #include <sys/bplist.h>
44 typedef struct spa_error_entry
{
45 zbookmark_t se_bookmark
;
50 typedef struct spa_history_phys
{
51 uint64_t sh_pool_create_len
; /* ending offset of zpool create */
52 uint64_t sh_phys_max_off
; /* physical EOF */
53 uint64_t sh_bof
; /* logical BOF */
54 uint64_t sh_eof
; /* logical EOF */
55 uint64_t sh_records_lost
; /* num of records overwritten */
59 uint64_t sav_object
; /* MOS object for device list */
60 nvlist_t
*sav_config
; /* cached device config */
61 vdev_t
**sav_vdevs
; /* devices */
62 int sav_count
; /* number devices */
63 boolean_t sav_sync
; /* sync the device list */
64 nvlist_t
**sav_pending
; /* pending device additions */
65 uint_t sav_npending
; /* # pending devices */
68 typedef struct spa_config_lock
{
70 kthread_t
*scl_writer
;
76 typedef struct spa_config_dirent
{
79 } spa_config_dirent_t
;
81 typedef enum spa_log_state
{
82 SPA_LOG_UNKNOWN
= 0, /* unknown log state */
83 SPA_LOG_MISSING
, /* missing log(s) */
84 SPA_LOG_CLEAR
, /* clear the log(s) */
85 SPA_LOG_GOOD
, /* log(s) are good */
96 * Fields protected by spa_namespace_lock.
98 char spa_name
[MAXNAMELEN
]; /* pool name */
99 avl_node_t spa_avl
; /* node in spa_namespace_avl */
100 nvlist_t
*spa_config
; /* last synced config */
101 nvlist_t
*spa_config_syncing
; /* currently syncing config */
102 uint64_t spa_config_txg
; /* txg of last config change */
103 int spa_sync_pass
; /* iterate-to-convergence */
104 pool_state_t spa_state
; /* pool state */
105 int spa_inject_ref
; /* injection references */
106 uint8_t spa_sync_on
; /* sync threads are running */
107 spa_load_state_t spa_load_state
; /* current load operation */
108 taskq_t
*spa_zio_taskq
[ZIO_TYPES
][ZIO_TASKQ_TYPES
];
109 dsl_pool_t
*spa_dsl_pool
;
110 metaslab_class_t
*spa_normal_class
; /* normal data class */
111 metaslab_class_t
*spa_log_class
; /* intent log data class */
112 uint64_t spa_first_txg
; /* first txg after spa_open() */
113 uint64_t spa_final_txg
; /* txg of export/destroy */
114 uint64_t spa_freeze_txg
; /* freeze pool at this txg */
115 objset_t
*spa_meta_objset
; /* copy of dp->dp_meta_objset */
116 txg_list_t spa_vdev_txg_list
; /* per-txg dirty vdev list */
117 vdev_t
*spa_root_vdev
; /* top-level vdev container */
118 uint64_t spa_load_guid
; /* initial guid for spa_load */
119 list_t spa_config_dirty_list
; /* vdevs with dirty config */
120 list_t spa_state_dirty_list
; /* vdevs with dirty state */
121 spa_aux_vdev_t spa_spares
; /* hot spares */
122 spa_aux_vdev_t spa_l2cache
; /* L2ARC cache devices */
123 uint64_t spa_config_object
; /* MOS object for pool config */
124 uint64_t spa_syncing_txg
; /* txg currently syncing */
125 uint64_t spa_sync_bplist_obj
; /* object for deferred frees */
126 bplist_t spa_sync_bplist
; /* deferred-free bplist */
127 uberblock_t spa_ubsync
; /* last synced uberblock */
128 uberblock_t spa_uberblock
; /* current uberblock */
129 kmutex_t spa_scrub_lock
; /* resilver/scrub lock */
130 uint64_t spa_scrub_inflight
; /* in-flight scrub I/Os */
131 uint64_t spa_scrub_maxinflight
; /* max in-flight scrub I/Os */
132 uint64_t spa_scrub_errors
; /* scrub I/O error count */
133 kcondvar_t spa_scrub_io_cv
; /* scrub I/O completion */
134 uint8_t spa_scrub_active
; /* active or suspended? */
135 uint8_t spa_scrub_type
; /* type of scrub we're doing */
136 uint8_t spa_scrub_finished
; /* indicator to rotate logs */
137 uint8_t spa_scrub_started
; /* started since last boot */
138 uint8_t spa_scrub_reopen
; /* scrub doing vdev_reopen */
139 kmutex_t spa_async_lock
; /* protect async state */
140 kthread_t
*spa_async_thread
; /* thread doing async task */
141 int spa_async_suspended
; /* async tasks suspended */
142 kcondvar_t spa_async_cv
; /* wait for thread_exit() */
143 uint16_t spa_async_tasks
; /* async task mask */
144 char *spa_root
; /* alternate root directory */
145 uint64_t spa_ena
; /* spa-wide ereport ENA */
146 boolean_t spa_last_open_failed
; /* true if last open faled */
147 kmutex_t spa_errlog_lock
; /* error log lock */
148 uint64_t spa_errlog_last
; /* last error log object */
149 uint64_t spa_errlog_scrub
; /* scrub error log object */
150 kmutex_t spa_errlist_lock
; /* error list/ereport lock */
151 avl_tree_t spa_errlist_last
; /* last error list */
152 avl_tree_t spa_errlist_scrub
; /* scrub error list */
153 uint64_t spa_deflate
; /* should we deflate? */
154 uint64_t spa_history
; /* history object */
155 kmutex_t spa_history_lock
; /* history lock */
156 vdev_t
*spa_pending_vdev
; /* pending vdev additions */
157 kmutex_t spa_props_lock
; /* property lock */
158 uint64_t spa_pool_props_object
; /* object for properties */
159 uint64_t spa_bootfs
; /* default boot filesystem */
160 uint64_t spa_failmode
; /* failure mode for the pool */
161 uint64_t spa_delegation
; /* delegation on/off */
162 list_t spa_config_list
; /* previous cache file(s) */
163 zio_t
*spa_async_zio_root
; /* root of all async I/O */
164 zio_t
*spa_suspend_zio_root
; /* root of all suspended I/O */
165 kmutex_t spa_suspend_lock
; /* protects suspend_zio_root */
166 kcondvar_t spa_suspend_cv
; /* notification of resume */
167 uint8_t spa_suspended
; /* pool is suspended */
168 boolean_t spa_is_root
; /* pool is root */
169 int spa_minref
; /* num refs when first opened */
170 int spa_mode
; /* FREAD | FWRITE */
171 spa_log_state_t spa_log_state
; /* log state */
172 uint64_t spa_autoexpand
; /* lun expansion on/off */
174 * spa_refcnt & spa_config_lock must be the last elements
175 * because refcount_t changes size based on compilation options.
176 * In order for the MDB module to function correctly, the other
177 * fields must remain in the same location.
179 spa_config_lock_t spa_config_lock
[SCL_LOCKS
]; /* config changes */
180 refcount_t spa_refcount
; /* number of opens */
183 extern const char *spa_config_path
;
185 #define BOOTFS_COMPRESS_VALID(compress) \
186 ((compress) == ZIO_COMPRESS_LZJB || \
187 ((compress) == ZIO_COMPRESS_ON && \
188 ZIO_COMPRESS_ON_VALUE == ZIO_COMPRESS_LZJB) || \
189 (compress) == ZIO_COMPRESS_OFF)
195 #endif /* _SYS_SPA_IMPL_H */