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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
25 #ifndef _SYS_SPA_IMPL_H
26 #define _SYS_SPA_IMPL_H
30 #include <sys/metaslab.h>
32 #include <sys/dsl_pool.h>
33 #include <sys/uberblock_impl.h>
34 #include <sys/zfs_context.h>
36 #include <sys/refcount.h>
37 #include <sys/bplist.h>
38 #include <sys/bpobj.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;
85 ZIO_TASKQ_INTERRUPT_HIGH,
90 * State machine for the zpool-pooname process. The states transitions
91 * are done as follows:
94 * PROC_NONE -> PROC_CREATED spa_activate()
95 * PROC_CREATED -> PROC_ACTIVE spa_thread()
96 * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
97 * PROC_DEACTIVATE -> PROC_GONE spa_thread()
98 * PROC_GONE -> PROC_NONE spa_deactivate()
100 typedef enum spa_proc_state {
101 SPA_PROC_NONE, /* spa_proc = &p0, no process created */
102 SPA_PROC_CREATED, /* spa_activate() has proc, is waiting */
103 SPA_PROC_ACTIVE, /* taskqs created, spa_proc set */
104 SPA_PROC_DEACTIVATE, /* spa_deactivate() requests process exit */
105 SPA_PROC_GONE /* spa_thread() is exiting, spa_proc = &p0 */
110 * Fields protected by spa_namespace_lock.
112 char spa_name[MAXNAMELEN]; /* pool name */
113 avl_node_t spa_avl; /* node in spa_namespace_avl */
114 nvlist_t *spa_config; /* last synced config */
115 nvlist_t *spa_config_syncing; /* currently syncing config */
116 nvlist_t *spa_config_splitting; /* config for splitting */
117 uint64_t spa_config_txg; /* txg of last config change */
118 int spa_sync_pass; /* iterate-to-convergence */
119 pool_state_t spa_state; /* pool state */
120 int spa_inject_ref; /* injection references */
121 uint8_t spa_sync_on; /* sync threads are running */
122 spa_load_state_t spa_load_state; /* current load operation */
123 boolean_t spa_load_verbatim; /* load the given config? */
124 taskq_t *spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
125 dsl_pool_t *spa_dsl_pool;
126 metaslab_class_t *spa_normal_class; /* normal data class */
127 metaslab_class_t *spa_log_class; /* intent log data class */
128 uint64_t spa_first_txg; /* first txg after spa_open() */
129 uint64_t spa_final_txg; /* txg of export/destroy */
130 uint64_t spa_freeze_txg; /* freeze pool at this txg */
131 uint64_t spa_load_max_txg; /* best initial ub_txg */
132 uint64_t spa_claim_max_txg; /* highest claimed birth txg */
133 objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */
134 txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */
135 vdev_t *spa_root_vdev; /* top-level vdev container */
136 uint64_t spa_load_guid; /* initial guid for spa_load */
137 list_t spa_config_dirty_list; /* vdevs with dirty config */
138 list_t spa_state_dirty_list; /* vdevs with dirty state */
139 spa_aux_vdev_t spa_spares; /* hot spares */
140 spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */
141 uint64_t spa_config_object; /* MOS object for pool config */
142 uint64_t spa_config_generation; /* config generation number */
143 uint64_t spa_syncing_txg; /* txg currently syncing */
144 bpobj_t spa_deferred_bpobj; /* deferred-free bplist */
145 bplist_t spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
146 uberblock_t spa_ubsync; /* last synced uberblock */
147 uberblock_t spa_uberblock; /* current uberblock */
148 boolean_t spa_extreme_rewind; /* rewind past deferred frees */
149 kmutex_t spa_scrub_lock; /* resilver/scrub lock */
150 uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */
151 uint64_t spa_scrub_maxinflight; /* max in-flight scrub I/Os */
152 kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */
153 uint8_t spa_scrub_active; /* active or suspended? */
154 uint8_t spa_scrub_type; /* type of scrub we're doing */
155 uint8_t spa_scrub_finished; /* indicator to rotate logs */
156 uint8_t spa_scrub_started; /* started since last boot */
157 uint8_t spa_scrub_reopen; /* scrub doing vdev_reopen */
158 uint64_t spa_scan_pass_start; /* start time per pass/reboot */
159 uint64_t spa_scan_pass_exam; /* examined bytes per pass */
160 kmutex_t spa_async_lock; /* protect async state */
161 kthread_t *spa_async_thread; /* thread doing async task */
162 int spa_async_suspended; /* async tasks suspended */
163 kcondvar_t spa_async_cv; /* wait for thread_exit() */
164 uint16_t spa_async_tasks; /* async task mask */
165 char *spa_root; /* alternate root directory */
166 uint64_t spa_ena; /* spa-wide ereport ENA */
167 int spa_last_open_failed; /* error if last open failed */
168 uint64_t spa_last_ubsync_txg; /* "best" uberblock txg */
169 uint64_t spa_last_ubsync_txg_ts; /* timestamp from that ub */
170 uint64_t spa_load_txg; /* ub txg that loaded */
171 uint64_t spa_load_txg_ts; /* timestamp from that ub */
172 uint64_t spa_load_meta_errors; /* verify metadata err count */
173 uint64_t spa_load_data_errors; /* verify data err count */
174 uint64_t spa_verify_min_txg; /* start txg of verify scrub */
175 kmutex_t spa_errlog_lock; /* error log lock */
176 uint64_t spa_errlog_last; /* last error log object */
177 uint64_t spa_errlog_scrub; /* scrub error log object */
178 kmutex_t spa_errlist_lock; /* error list/ereport lock */
179 avl_tree_t spa_errlist_last; /* last error list */
180 avl_tree_t spa_errlist_scrub; /* scrub error list */
181 uint64_t spa_deflate; /* should we deflate? */
182 uint64_t spa_history; /* history object */
183 kmutex_t spa_history_lock; /* history lock */
184 vdev_t *spa_pending_vdev; /* pending vdev additions */
185 kmutex_t spa_props_lock; /* property lock */
186 uint64_t spa_pool_props_object; /* object for properties */
187 uint64_t spa_bootfs; /* default boot filesystem */
188 uint64_t spa_failmode; /* failure mode for the pool */
189 uint64_t spa_delegation; /* delegation on/off */
190 list_t spa_config_list; /* previous cache file(s) */
191 zio_t *spa_async_zio_root; /* root of all async I/O */
192 zio_t *spa_suspend_zio_root; /* root of all suspended I/O */
193 kmutex_t spa_suspend_lock; /* protects suspend_zio_root */
194 kcondvar_t spa_suspend_cv; /* notification of resume */
195 uint8_t spa_suspended; /* pool is suspended */
196 uint8_t spa_claiming; /* pool is doing zil_claim() */
197 boolean_t spa_is_root; /* pool is root */
198 int spa_minref; /* num refs when first opened */
199 int spa_mode; /* FREAD | FWRITE */
200 spa_log_state_t spa_log_state; /* log state */
201 uint64_t spa_autoexpand; /* lun expansion on/off */
202 ddt_t *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
203 uint64_t spa_ddt_stat_object; /* DDT statistics */
204 uint64_t spa_dedup_ditto; /* dedup ditto threshold */
205 uint64_t spa_dedup_checksum; /* default dedup checksum */
206 uint64_t spa_dspace; /* dspace in normal class */
207 kmutex_t spa_vdev_top_lock; /* dueling offline/remove */
208 kmutex_t spa_proc_lock; /* protects spa_proc* */
209 kcondvar_t spa_proc_cv; /* spa_proc_state transitions */
210 spa_proc_state_t spa_proc_state; /* see definition */
211 struct proc *spa_proc; /* "zpool-poolname" process */
212 uint64_t spa_did; /* if procp != p0, did of t1 */
213 boolean_t spa_autoreplace; /* autoreplace set in open */
214 int spa_vdev_locks; /* locks grabbed */
215 uint64_t spa_creation_version; /* version at pool creation */
216 uint64_t spa_prev_software_version;
218 * spa_refcnt & spa_config_lock must be the last elements
219 * because refcount_t changes size based on compilation options.
220 * In order for the MDB module to function correctly, the other
221 * fields must remain in the same location.
223 spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
224 refcount_t spa_refcount; /* number of opens */
227 extern const char *spa_config_path;
233 #endif /* _SYS_SPA_IMPL_H */