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 2008 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 kmutex_t spa_async_root_lock; /* protects async root count */
145 uint64_t spa_async_root_count; /* number of async root zios */
146 kcondvar_t spa_async_root_cv; /* notify when count == 0 */
147 char *spa_root; /* alternate root directory */
148 uint64_t spa_ena; /* spa-wide ereport ENA */
149 boolean_t spa_last_open_failed; /* true if last open faled */
150 kmutex_t spa_errlog_lock; /* error log lock */
151 uint64_t spa_errlog_last; /* last error log object */
152 uint64_t spa_errlog_scrub; /* scrub error log object */
153 kmutex_t spa_errlist_lock; /* error list/ereport lock */
154 avl_tree_t spa_errlist_last; /* last error list */
155 avl_tree_t spa_errlist_scrub; /* scrub error list */
156 uint64_t spa_deflate; /* should we deflate? */
157 uint64_t spa_history; /* history object */
158 kmutex_t spa_history_lock; /* history lock */
159 vdev_t *spa_pending_vdev; /* pending vdev additions */
160 kmutex_t spa_props_lock; /* property lock */
161 uint64_t spa_pool_props_object; /* object for properties */
162 uint64_t spa_bootfs; /* default boot filesystem */
163 uint64_t spa_failmode; /* failure mode for the pool */
164 uint64_t spa_delegation; /* delegation on/off */
165 list_t spa_config_list; /* previous cache file(s) */
166 zio_t *spa_suspend_zio_root; /* root of all suspended I/O */
167 kmutex_t spa_suspend_lock; /* protects suspend_zio_root */
168 kcondvar_t spa_suspend_cv; /* notification of resume */
169 uint8_t spa_suspended; /* pool is suspended */
170 boolean_t spa_import_faulted; /* allow faulted vdevs */
171 boolean_t spa_is_root; /* pool is root */
172 int spa_minref; /* num refs when first opened */
173 int spa_mode; /* FREAD | FWRITE */
174 spa_log_state_t spa_log_state; /* log state */
176 * spa_refcnt & spa_config_lock must be the last elements
177 * because refcount_t changes size based on compilation options.
178 * In order for the MDB module to function correctly, the other
179 * fields must remain in the same location.
181 spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
182 refcount_t spa_refcount; /* number of opens */
185 extern const char *spa_config_path;
187 #define BOOTFS_COMPRESS_VALID(compress) \
188 ((compress) == ZIO_COMPRESS_LZJB || \
189 ((compress) == ZIO_COMPRESS_ON && \
190 ZIO_COMPRESS_ON_VALUE == ZIO_COMPRESS_LZJB) || \
191 (compress) == ZIO_COMPRESS_OFF)
197 #endif /* _SYS_SPA_IMPL_H */