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) 2012 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
27 #ifndef _SYS_SPA_IMPL_H
28 #define _SYS_SPA_IMPL_H
32 #include <sys/metaslab.h>
34 #include <sys/dsl_pool.h>
35 #include <sys/uberblock_impl.h>
36 #include <sys/zfs_context.h>
38 #include <sys/refcount.h>
39 #include <sys/bplist.h>
40 #include <sys/bpobj.h>
46 typedef struct spa_error_entry
{
47 zbookmark_t se_bookmark
;
52 typedef struct spa_history_phys
{
53 uint64_t sh_pool_create_len
; /* ending offset of zpool create */
54 uint64_t sh_phys_max_off
; /* physical EOF */
55 uint64_t sh_bof
; /* logical BOF */
56 uint64_t sh_eof
; /* logical EOF */
57 uint64_t sh_records_lost
; /* num of records overwritten */
61 uint64_t sav_object
; /* MOS object for device list */
62 nvlist_t
*sav_config
; /* cached device config */
63 vdev_t
**sav_vdevs
; /* devices */
64 int sav_count
; /* number devices */
65 boolean_t sav_sync
; /* sync the device list */
66 nvlist_t
**sav_pending
; /* pending device additions */
67 uint_t sav_npending
; /* # pending devices */
70 typedef struct spa_config_lock
{
72 kthread_t
*scl_writer
;
78 typedef struct spa_config_dirent
{
81 } spa_config_dirent_t
;
83 typedef enum zio_taskq_type
{
87 ZIO_TASKQ_INTERRUPT_HIGH
,
92 * State machine for the zpool-poolname process. The states transitions
93 * are done as follows:
96 * PROC_NONE -> PROC_CREATED spa_activate()
97 * PROC_CREATED -> PROC_ACTIVE spa_thread()
98 * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
99 * PROC_DEACTIVATE -> PROC_GONE spa_thread()
100 * PROC_GONE -> PROC_NONE spa_deactivate()
102 typedef enum spa_proc_state
{
103 SPA_PROC_NONE
, /* spa_proc = &p0, no process created */
104 SPA_PROC_CREATED
, /* spa_activate() has proc, is waiting */
105 SPA_PROC_ACTIVE
, /* taskqs created, spa_proc set */
106 SPA_PROC_DEACTIVATE
, /* spa_deactivate() requests process exit */
107 SPA_PROC_GONE
/* spa_thread() is exiting, spa_proc = &p0 */
110 typedef struct spa_taskqs
{
112 taskq_t
**stqs_taskq
;
117 * Fields protected by spa_namespace_lock.
119 char spa_name
[MAXNAMELEN
]; /* pool name */
120 char *spa_comment
; /* comment */
121 avl_node_t spa_avl
; /* node in spa_namespace_avl */
122 nvlist_t
*spa_config
; /* last synced config */
123 nvlist_t
*spa_config_syncing
; /* currently syncing config */
124 nvlist_t
*spa_config_splitting
; /* config for splitting */
125 nvlist_t
*spa_load_info
; /* info and errors from load */
126 uint64_t spa_config_txg
; /* txg of last config change */
127 int spa_sync_pass
; /* iterate-to-convergence */
128 pool_state_t spa_state
; /* pool state */
129 int spa_inject_ref
; /* injection references */
130 uint8_t spa_sync_on
; /* sync threads are running */
131 spa_load_state_t spa_load_state
; /* current load operation */
132 uint64_t spa_import_flags
; /* import specific flags */
133 spa_taskqs_t spa_zio_taskq
[ZIO_TYPES
][ZIO_TASKQ_TYPES
];
134 dsl_pool_t
*spa_dsl_pool
;
135 boolean_t spa_is_initializing
; /* true while opening pool */
136 metaslab_class_t
*spa_normal_class
; /* normal data class */
137 metaslab_class_t
*spa_log_class
; /* intent log data class */
138 uint64_t spa_first_txg
; /* first txg after spa_open() */
139 uint64_t spa_final_txg
; /* txg of export/destroy */
140 uint64_t spa_freeze_txg
; /* freeze pool at this txg */
141 uint64_t spa_load_max_txg
; /* best initial ub_txg */
142 uint64_t spa_claim_max_txg
; /* highest claimed birth txg */
143 timespec_t spa_loaded_ts
; /* 1st successful open time */
144 objset_t
*spa_meta_objset
; /* copy of dp->dp_meta_objset */
145 txg_list_t spa_vdev_txg_list
; /* per-txg dirty vdev list */
146 vdev_t
*spa_root_vdev
; /* top-level vdev container */
147 uint64_t spa_config_guid
; /* config pool guid */
148 uint64_t spa_load_guid
; /* spa_load initialized guid */
149 uint64_t spa_last_synced_guid
; /* last synced guid */
150 list_t spa_config_dirty_list
; /* vdevs with dirty config */
151 list_t spa_state_dirty_list
; /* vdevs with dirty state */
152 spa_aux_vdev_t spa_spares
; /* hot spares */
153 spa_aux_vdev_t spa_l2cache
; /* L2ARC cache devices */
154 nvlist_t
*spa_label_features
; /* Features for reading MOS */
155 uint64_t spa_config_object
; /* MOS object for pool config */
156 uint64_t spa_config_generation
; /* config generation number */
157 uint64_t spa_syncing_txg
; /* txg currently syncing */
158 bpobj_t spa_deferred_bpobj
; /* deferred-free bplist */
159 bplist_t spa_free_bplist
[TXG_SIZE
]; /* bplist of stuff to free */
160 uberblock_t spa_ubsync
; /* last synced uberblock */
161 uberblock_t spa_uberblock
; /* current uberblock */
162 boolean_t spa_extreme_rewind
; /* rewind past deferred frees */
163 uint64_t spa_last_io
; /* lbolt of last non-scan I/O */
164 kmutex_t spa_scrub_lock
; /* resilver/scrub lock */
165 uint64_t spa_scrub_inflight
; /* in-flight scrub I/Os */
166 kcondvar_t spa_scrub_io_cv
; /* scrub I/O completion */
167 uint8_t spa_scrub_active
; /* active or suspended? */
168 uint8_t spa_scrub_type
; /* type of scrub we're doing */
169 uint8_t spa_scrub_finished
; /* indicator to rotate logs */
170 uint8_t spa_scrub_started
; /* started since last boot */
171 uint8_t spa_scrub_reopen
; /* scrub doing vdev_reopen */
172 uint64_t spa_scan_pass_start
; /* start time per pass/reboot */
173 uint64_t spa_scan_pass_exam
; /* examined bytes per pass */
174 kmutex_t spa_async_lock
; /* protect async state */
175 kthread_t
*spa_async_thread
; /* thread doing async task */
176 int spa_async_suspended
; /* async tasks suspended */
177 kcondvar_t spa_async_cv
; /* wait for thread_exit() */
178 uint16_t spa_async_tasks
; /* async task mask */
179 char *spa_root
; /* alternate root directory */
180 uint64_t spa_ena
; /* spa-wide ereport ENA */
181 int spa_last_open_failed
; /* error if last open failed */
182 uint64_t spa_last_ubsync_txg
; /* "best" uberblock txg */
183 uint64_t spa_last_ubsync_txg_ts
; /* timestamp from that ub */
184 uint64_t spa_load_txg
; /* ub txg that loaded */
185 uint64_t spa_load_txg_ts
; /* timestamp from that ub */
186 uint64_t spa_load_meta_errors
; /* verify metadata err count */
187 uint64_t spa_load_data_errors
; /* verify data err count */
188 uint64_t spa_verify_min_txg
; /* start txg of verify scrub */
189 kmutex_t spa_errlog_lock
; /* error log lock */
190 uint64_t spa_errlog_last
; /* last error log object */
191 uint64_t spa_errlog_scrub
; /* scrub error log object */
192 kmutex_t spa_errlist_lock
; /* error list/ereport lock */
193 avl_tree_t spa_errlist_last
; /* last error list */
194 avl_tree_t spa_errlist_scrub
; /* scrub error list */
195 uint64_t spa_deflate
; /* should we deflate? */
196 uint64_t spa_history
; /* history object */
197 kmutex_t spa_history_lock
; /* history lock */
198 vdev_t
*spa_pending_vdev
; /* pending vdev additions */
199 kmutex_t spa_props_lock
; /* property lock */
200 uint64_t spa_pool_props_object
; /* object for properties */
201 uint64_t spa_bootfs
; /* default boot filesystem */
202 uint64_t spa_failmode
; /* failure mode for the pool */
203 uint64_t spa_delegation
; /* delegation on/off */
204 list_t spa_config_list
; /* previous cache file(s) */
205 zio_t
*spa_async_zio_root
; /* root of all async I/O */
206 zio_t
*spa_suspend_zio_root
; /* root of all suspended I/O */
207 kmutex_t spa_suspend_lock
; /* protects suspend_zio_root */
208 kcondvar_t spa_suspend_cv
; /* notification of resume */
209 uint8_t spa_suspended
; /* pool is suspended */
210 uint8_t spa_claiming
; /* pool is doing zil_claim() */
211 boolean_t spa_debug
; /* debug enabled? */
212 boolean_t spa_is_root
; /* pool is root */
213 int spa_minref
; /* num refs when first opened */
214 int spa_mode
; /* FREAD | FWRITE */
215 spa_log_state_t spa_log_state
; /* log state */
216 uint64_t spa_autoexpand
; /* lun expansion on/off */
217 ddt_t
*spa_ddt
[ZIO_CHECKSUM_FUNCTIONS
]; /* in-core DDTs */
218 uint64_t spa_ddt_stat_object
; /* DDT statistics */
219 uint64_t spa_dedup_ditto
; /* dedup ditto threshold */
220 uint64_t spa_dedup_checksum
; /* default dedup checksum */
221 uint64_t spa_dspace
; /* dspace in normal class */
222 kmutex_t spa_vdev_top_lock
; /* dueling offline/remove */
223 kmutex_t spa_proc_lock
; /* protects spa_proc* */
224 kcondvar_t spa_proc_cv
; /* spa_proc_state transitions */
225 spa_proc_state_t spa_proc_state
; /* see definition */
226 proc_t
*spa_proc
; /* "zpool-poolname" process */
227 uint64_t spa_did
; /* if procp != p0, did of t1 */
228 boolean_t spa_autoreplace
; /* autoreplace set in open */
229 int spa_vdev_locks
; /* locks grabbed */
230 uint64_t spa_creation_version
; /* version at pool creation */
231 uint64_t spa_prev_software_version
; /* See ub_software_version */
232 uint64_t spa_feat_for_write_obj
; /* required to write to pool */
233 uint64_t spa_feat_for_read_obj
; /* required to read from pool */
234 uint64_t spa_feat_desc_obj
; /* Feature descriptions */
235 taskqid_t spa_deadman_tqid
; /* Task id */
236 uint64_t spa_deadman_calls
; /* number of deadman calls */
237 uint64_t spa_sync_starttime
; /* starting time fo spa_sync */
238 uint64_t spa_deadman_synctime
; /* deadman expiration timer */
240 * spa_refcnt & spa_config_lock must be the last elements
241 * because refcount_t changes size based on compilation options.
242 * In order for the MDB module to function correctly, the other
243 * fields must remain in the same location.
245 spa_config_lock_t spa_config_lock
[SCL_LOCKS
]; /* config changes */
246 refcount_t spa_refcount
; /* number of opens */
249 extern char *spa_config_path
;
251 extern void spa_taskq_dispatch_ent(spa_t
*spa
, zio_type_t t
, zio_taskq_type_t q
,
252 task_func_t
*func
, void *arg
, uint_t flags
, taskq_ent_t
*ent
);
253 extern void spa_taskq_dispatch_sync(spa_t
*, zio_type_t t
, zio_taskq_type_t q
,
254 task_func_t
*func
, void *arg
, uint_t flags
);
261 #endif /* _SYS_SPA_IMPL_H */