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.
23 * Copyright (c) 2011 by Delphix. All rights reserved.
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>
39 #include <sys/bpobj.h>
45 typedef struct spa_error_entry {
46 zbookmark_t se_bookmark;
51 typedef struct spa_history_phys {
52 uint64_t sh_pool_create_len; /* ending offset of zpool create */
53 uint64_t sh_phys_max_off; /* physical EOF */
54 uint64_t sh_bof; /* logical BOF */
55 uint64_t sh_eof; /* logical EOF */
56 uint64_t sh_records_lost; /* num of records overwritten */
60 uint64_t sav_object; /* MOS object for device list */
61 nvlist_t *sav_config; /* cached device config */
62 vdev_t **sav_vdevs; /* devices */
63 int sav_count; /* number devices */
64 boolean_t sav_sync; /* sync the device list */
65 nvlist_t **sav_pending; /* pending device additions */
66 uint_t sav_npending; /* # pending devices */
69 typedef struct spa_config_lock {
71 kthread_t *scl_writer;
77 typedef struct spa_config_dirent {
80 } spa_config_dirent_t;
86 ZIO_TASKQ_INTERRUPT_HIGH,
91 * State machine for the zpool-pooname process. The states transitions
92 * are done as follows:
95 * PROC_NONE -> PROC_CREATED spa_activate()
96 * PROC_CREATED -> PROC_ACTIVE spa_thread()
97 * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
98 * PROC_DEACTIVATE -> PROC_GONE spa_thread()
99 * PROC_GONE -> PROC_NONE spa_deactivate()
101 typedef enum spa_proc_state {
102 SPA_PROC_NONE, /* spa_proc = &p0, no process created */
103 SPA_PROC_CREATED, /* spa_activate() has proc, is waiting */
104 SPA_PROC_ACTIVE, /* taskqs created, spa_proc set */
105 SPA_PROC_DEACTIVATE, /* spa_deactivate() requests process exit */
106 SPA_PROC_GONE /* spa_thread() is exiting, spa_proc = &p0 */
111 * Fields protected by spa_namespace_lock.
113 char spa_name[MAXNAMELEN]; /* pool name */
114 avl_node_t spa_avl; /* node in spa_namespace_avl */
115 nvlist_t *spa_config; /* last synced config */
116 nvlist_t *spa_config_syncing; /* currently syncing config */
117 nvlist_t *spa_config_splitting; /* config for splitting */
118 nvlist_t *spa_load_info; /* info and errors from load */
119 uint64_t spa_config_txg; /* txg of last config change */
120 int spa_sync_pass; /* iterate-to-convergence */
121 pool_state_t spa_state; /* pool state */
122 int spa_inject_ref; /* injection references */
123 uint8_t spa_sync_on; /* sync threads are running */
124 spa_load_state_t spa_load_state; /* current load operation */
125 uint64_t spa_import_flags; /* import specific flags */
126 taskq_t *spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
127 dsl_pool_t *spa_dsl_pool;
128 metaslab_class_t *spa_normal_class; /* normal data class */
129 metaslab_class_t *spa_log_class; /* intent log data class */
130 uint64_t spa_first_txg; /* first txg after spa_open() */
131 uint64_t spa_final_txg; /* txg of export/destroy */
132 uint64_t spa_freeze_txg; /* freeze pool at this txg */
133 uint64_t spa_load_max_txg; /* best initial ub_txg */
134 uint64_t spa_claim_max_txg; /* highest claimed birth txg */
135 timespec_t spa_loaded_ts; /* 1st successful open time */
136 objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */
137 txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */
138 vdev_t *spa_root_vdev; /* top-level vdev container */
139 uint64_t spa_load_guid; /* initial guid for spa_load */
140 list_t spa_config_dirty_list; /* vdevs with dirty config */
141 list_t spa_state_dirty_list; /* vdevs with dirty state */
142 spa_aux_vdev_t spa_spares; /* hot spares */
143 spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */
144 uint64_t spa_config_object; /* MOS object for pool config */
145 uint64_t spa_config_generation; /* config generation number */
146 uint64_t spa_syncing_txg; /* txg currently syncing */
147 bpobj_t spa_deferred_bpobj; /* deferred-free bplist */
148 bplist_t spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
149 uberblock_t spa_ubsync; /* last synced uberblock */
150 uberblock_t spa_uberblock; /* current uberblock */
151 boolean_t spa_extreme_rewind; /* rewind past deferred frees */
152 uint64_t spa_last_io; /* lbolt of last non-scan I/O */
153 kmutex_t spa_scrub_lock; /* resilver/scrub lock */
154 uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */
155 kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */
156 uint8_t spa_scrub_active; /* active or suspended? */
157 uint8_t spa_scrub_type; /* type of scrub we're doing */
158 uint8_t spa_scrub_finished; /* indicator to rotate logs */
159 uint8_t spa_scrub_started; /* started since last boot */
160 uint8_t spa_scrub_reopen; /* scrub doing vdev_reopen */
161 uint64_t spa_scan_pass_start; /* start time per pass/reboot */
162 uint64_t spa_scan_pass_exam; /* examined bytes per pass */
163 kmutex_t spa_async_lock; /* protect async state */
164 kthread_t *spa_async_thread; /* thread doing async task */
165 int spa_async_suspended; /* async tasks suspended */
166 kcondvar_t spa_async_cv; /* wait for thread_exit() */
167 uint16_t spa_async_tasks; /* async task mask */
168 char *spa_root; /* alternate root directory */
169 uint64_t spa_ena; /* spa-wide ereport ENA */
170 int spa_last_open_failed; /* error if last open failed */
171 uint64_t spa_last_ubsync_txg; /* "best" uberblock txg */
172 uint64_t spa_last_ubsync_txg_ts; /* timestamp from that ub */
173 uint64_t spa_load_txg; /* ub txg that loaded */
174 uint64_t spa_load_txg_ts; /* timestamp from that ub */
175 uint64_t spa_load_meta_errors; /* verify metadata err count */
176 uint64_t spa_load_data_errors; /* verify data err count */
177 uint64_t spa_verify_min_txg; /* start txg of verify scrub */
178 kmutex_t spa_errlog_lock; /* error log lock */
179 uint64_t spa_errlog_last; /* last error log object */
180 uint64_t spa_errlog_scrub; /* scrub error log object */
181 kmutex_t spa_errlist_lock; /* error list/ereport lock */
182 avl_tree_t spa_errlist_last; /* last error list */
183 avl_tree_t spa_errlist_scrub; /* scrub error list */
184 uint64_t spa_deflate; /* should we deflate? */
185 uint64_t spa_history; /* history object */
186 kmutex_t spa_history_lock; /* history lock */
187 vdev_t *spa_pending_vdev; /* pending vdev additions */
188 kmutex_t spa_props_lock; /* property lock */
189 uint64_t spa_pool_props_object; /* object for properties */
190 uint64_t spa_bootfs; /* default boot filesystem */
191 uint64_t spa_failmode; /* failure mode for the pool */
192 uint64_t spa_delegation; /* delegation on/off */
193 list_t spa_config_list; /* previous cache file(s) */
194 zio_t *spa_async_zio_root; /* root of all async I/O */
195 zio_t *spa_suspend_zio_root; /* root of all suspended I/O */
196 kmutex_t spa_suspend_lock; /* protects suspend_zio_root */
197 kcondvar_t spa_suspend_cv; /* notification of resume */
198 uint8_t spa_suspended; /* pool is suspended */
199 uint8_t spa_claiming; /* pool is doing zil_claim() */
200 boolean_t spa_debug; /* debug enabled? */
201 boolean_t spa_is_root; /* pool is root */
202 int spa_minref; /* num refs when first opened */
203 int spa_mode; /* FREAD | FWRITE */
204 spa_log_state_t spa_log_state; /* log state */
205 uint64_t spa_autoexpand; /* lun expansion on/off */
206 ddt_t *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
207 uint64_t spa_ddt_stat_object; /* DDT statistics */
208 uint64_t spa_dedup_ditto; /* dedup ditto threshold */
209 uint64_t spa_dedup_checksum; /* default dedup checksum */
210 uint64_t spa_dspace; /* dspace in normal class */
211 kmutex_t spa_vdev_top_lock; /* dueling offline/remove */
212 kmutex_t spa_proc_lock; /* protects spa_proc* */
213 kcondvar_t spa_proc_cv; /* spa_proc_state transitions */
214 spa_proc_state_t spa_proc_state; /* see definition */
215 proc_t *spa_proc; /* "zpool-poolname" process */
216 uint64_t spa_did; /* if procp != p0, did of t1 */
217 boolean_t spa_autoreplace; /* autoreplace set in open */
218 int spa_vdev_locks; /* locks grabbed */
219 uint64_t spa_creation_version; /* version at pool creation */
220 uint64_t spa_prev_software_version;
222 * spa_refcnt & spa_config_lock must be the last elements
223 * because refcount_t changes size based on compilation options.
224 * In order for the MDB module to function correctly, the other
225 * fields must remain in the same location.
227 spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
228 refcount_t spa_refcount; /* number of opens */
231 extern char *spa_config_path;
237 #endif /* _SYS_SPA_IMPL_H */