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 2007 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
29 #pragma ident "%Z%%M% %I% %E% SMI"
33 #include <sys/metaslab.h>
35 #include <sys/dsl_pool.h>
36 #include <sys/uberblock_impl.h>
37 #include <sys/zfs_context.h>
39 #include <sys/refcount.h>
40 #include <sys/bplist.h>
46 typedef struct spa_config_lock {
49 kthread_t *scl_writer;
53 typedef struct spa_error_entry {
54 zbookmark_t se_bookmark;
59 typedef 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 */
67 typedef struct spa_props {
68 nvlist_t *spa_props_nvp;
69 list_node_t spa_list_node;
74 * Fields protected by spa_namespace_lock.
76 char *spa_name; /* pool name */
77 avl_node_t spa_avl; /* node in spa_namespace_avl */
78 nvlist_t *spa_config; /* last synced config */
79 nvlist_t *spa_config_syncing; /* currently syncing config */
80 uint64_t spa_config_txg; /* txg of last config change */
81 kmutex_t spa_config_cache_lock; /* for spa_config RW_READER */
82 int spa_sync_pass; /* iterate-to-convergence */
83 int spa_state; /* pool state */
84 int spa_inject_ref; /* injection references */
85 uint8_t spa_traverse_wanted; /* traverse lock wanted */
86 uint8_t spa_sync_on; /* sync threads are running */
87 spa_load_state_t spa_load_state; /* current load operation */
88 taskq_t *spa_zio_issue_taskq[ZIO_TYPES];
89 taskq_t *spa_zio_intr_taskq[ZIO_TYPES];
90 dsl_pool_t *spa_dsl_pool;
91 metaslab_class_t *spa_normal_class; /* normal data class */
92 uint64_t spa_first_txg; /* first txg after spa_open() */
93 uint64_t spa_final_txg; /* txg of export/destroy */
94 uint64_t spa_freeze_txg; /* freeze pool at this txg */
95 objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */
96 txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */
97 vdev_t *spa_root_vdev; /* top-level vdev container */
98 uint64_t spa_load_guid; /* initial guid for spa_load */
99 list_t spa_dirty_list; /* vdevs with dirty labels */
100 uint64_t spa_spares_object; /* MOS object for spare list */
101 nvlist_t *spa_sparelist; /* cached spare config */
102 vdev_t **spa_spares; /* available hot spares */
103 int spa_nspares; /* number of hot spares */
104 boolean_t spa_sync_spares; /* sync the spares list */
105 uint64_t spa_config_object; /* MOS object for pool config */
106 uint64_t spa_syncing_txg; /* txg currently syncing */
107 uint64_t spa_sync_bplist_obj; /* object for deferred frees */
108 bplist_t spa_sync_bplist; /* deferred-free bplist */
109 krwlock_t spa_traverse_lock; /* traverse vs. spa_sync() */
110 uberblock_t spa_ubsync; /* last synced uberblock */
111 uberblock_t spa_uberblock; /* current uberblock */
112 kmutex_t spa_scrub_lock; /* resilver/scrub lock */
113 kthread_t *spa_scrub_thread; /* scrub/resilver thread */
114 traverse_handle_t *spa_scrub_th; /* scrub traverse handle */
115 uint64_t spa_scrub_restart_txg; /* need to restart */
116 uint64_t spa_scrub_mintxg; /* min txg we'll scrub */
117 uint64_t spa_scrub_maxtxg; /* max txg we'll scrub */
118 uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */
119 uint64_t spa_scrub_maxinflight; /* max in-flight scrub I/Os */
120 uint64_t spa_scrub_errors; /* scrub I/O error count */
121 int spa_scrub_suspended; /* tell scrubber to suspend */
122 kcondvar_t spa_scrub_cv; /* scrub thread state change */
123 kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */
124 uint8_t spa_scrub_stop; /* tell scrubber to stop */
125 uint8_t spa_scrub_active; /* active or suspended? */
126 uint8_t spa_scrub_type; /* type of scrub we're doing */
127 uint8_t spa_scrub_finished; /* indicator to rotate logs */
128 kmutex_t spa_async_lock; /* protect async state */
129 kthread_t *spa_async_thread; /* thread doing async task */
130 int spa_async_suspended; /* async tasks suspended */
131 kcondvar_t spa_async_cv; /* wait for thread_exit() */
132 uint16_t spa_async_tasks; /* async task mask */
133 char *spa_root; /* alternate root directory */
134 kmutex_t spa_uberblock_lock; /* vdev_uberblock_load_done() */
135 uint64_t spa_ena; /* spa-wide ereport ENA */
136 boolean_t spa_last_open_failed; /* true if last open faled */
137 kmutex_t spa_errlog_lock; /* error log lock */
138 uint64_t spa_errlog_last; /* last error log object */
139 uint64_t spa_errlog_scrub; /* scrub error log object */
140 kmutex_t spa_errlist_lock; /* error list/ereport lock */
141 avl_tree_t spa_errlist_last; /* last error list */
142 avl_tree_t spa_errlist_scrub; /* scrub error list */
143 uint64_t spa_deflate; /* should we deflate? */
144 uint64_t spa_history; /* history object */
145 kmutex_t spa_history_lock; /* history lock */
146 vdev_t *spa_pending_vdev; /* pending vdev additions */
147 nvlist_t **spa_pending_spares; /* pending spare additions */
148 uint_t spa_pending_nspares; /* # pending spares */
149 kmutex_t spa_props_lock; /* property lock */
150 uint64_t spa_pool_props_object; /* object for properties */
151 uint64_t spa_bootfs; /* default boot filesystem */
153 * spa_refcnt must be the last element because it changes size based on
154 * compilation options. In order for the MDB module to function
155 * correctly, the other fields must remain in the same location.
157 spa_config_lock_t spa_config_lock; /* configuration changes */
158 refcount_t spa_refcount; /* number of opens */
161 extern const char *spa_config_dir;
162 extern kmutex_t spa_namespace_lock;
168 #endif /* _SYS_SPA_IMPL_H */