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, 2015 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
26 * Copyright (c) 2016 Actifio, Inc. All rights reserved.
29 #ifndef _SYS_SPA_IMPL_H
30 #define _SYS_SPA_IMPL_H
34 #include <sys/metaslab.h>
36 #include <sys/dsl_pool.h>
37 #include <sys/uberblock_impl.h>
38 #include <sys/zfs_context.h>
40 #include <sys/refcount.h>
41 #include <sys/bplist.h>
42 #include <sys/bpobj.h>
43 #include <sys/zfeature.h>
44 #include <zfeature_common.h>
50 typedef struct spa_error_entry
{
51 zbookmark_phys_t se_bookmark
;
56 typedef struct spa_history_phys
{
57 uint64_t sh_pool_create_len
; /* ending offset of zpool create */
58 uint64_t sh_phys_max_off
; /* physical EOF */
59 uint64_t sh_bof
; /* logical BOF */
60 uint64_t sh_eof
; /* logical EOF */
61 uint64_t sh_records_lost
; /* num of records overwritten */
65 uint64_t sav_object
; /* MOS object for device list */
66 nvlist_t
*sav_config
; /* cached device config */
67 vdev_t
**sav_vdevs
; /* devices */
68 int sav_count
; /* number devices */
69 boolean_t sav_sync
; /* sync the device list */
70 nvlist_t
**sav_pending
; /* pending device additions */
71 uint_t sav_npending
; /* # pending devices */
74 typedef struct spa_config_lock
{
76 kthread_t
*scl_writer
;
82 typedef struct spa_config_dirent
{
85 } spa_config_dirent_t
;
87 typedef enum zio_taskq_type
{
91 ZIO_TASKQ_INTERRUPT_HIGH
,
96 * State machine for the zpool-poolname process. The states transitions
97 * are done as follows:
100 * PROC_NONE -> PROC_CREATED spa_activate()
101 * PROC_CREATED -> PROC_ACTIVE spa_thread()
102 * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
103 * PROC_DEACTIVATE -> PROC_GONE spa_thread()
104 * PROC_GONE -> PROC_NONE spa_deactivate()
106 typedef enum spa_proc_state
{
107 SPA_PROC_NONE
, /* spa_proc = &p0, no process created */
108 SPA_PROC_CREATED
, /* spa_activate() has proc, is waiting */
109 SPA_PROC_ACTIVE
, /* taskqs created, spa_proc set */
110 SPA_PROC_DEACTIVATE
, /* spa_deactivate() requests process exit */
111 SPA_PROC_GONE
/* spa_thread() is exiting, spa_proc = &p0 */
114 typedef struct spa_taskqs
{
116 taskq_t
**stqs_taskq
;
121 * Fields protected by spa_namespace_lock.
123 char spa_name
[MAXNAMELEN
]; /* pool name */
124 char *spa_comment
; /* comment */
125 avl_node_t spa_avl
; /* node in spa_namespace_avl */
126 nvlist_t
*spa_config
; /* last synced config */
127 nvlist_t
*spa_config_syncing
; /* currently syncing config */
128 nvlist_t
*spa_config_splitting
; /* config for splitting */
129 nvlist_t
*spa_load_info
; /* info and errors from load */
130 uint64_t spa_config_txg
; /* txg of last config change */
131 int spa_sync_pass
; /* iterate-to-convergence */
132 pool_state_t spa_state
; /* pool state */
133 int spa_inject_ref
; /* injection references */
134 uint8_t spa_sync_on
; /* sync threads are running */
135 spa_load_state_t spa_load_state
; /* current load operation */
136 uint64_t spa_import_flags
; /* import specific flags */
137 spa_taskqs_t spa_zio_taskq
[ZIO_TYPES
][ZIO_TASKQ_TYPES
];
138 dsl_pool_t
*spa_dsl_pool
;
139 boolean_t spa_is_initializing
; /* true while opening pool */
140 metaslab_class_t
*spa_normal_class
; /* normal data class */
141 metaslab_class_t
*spa_log_class
; /* intent log data class */
142 uint64_t spa_first_txg
; /* first txg after spa_open() */
143 uint64_t spa_final_txg
; /* txg of export/destroy */
144 uint64_t spa_freeze_txg
; /* freeze pool at this txg */
145 uint64_t spa_load_max_txg
; /* best initial ub_txg */
146 uint64_t spa_claim_max_txg
; /* highest claimed birth txg */
147 timespec_t spa_loaded_ts
; /* 1st successful open time */
148 objset_t
*spa_meta_objset
; /* copy of dp->dp_meta_objset */
149 kmutex_t spa_evicting_os_lock
; /* Evicting objset list lock */
150 list_t spa_evicting_os_list
; /* Objsets being evicted. */
151 kcondvar_t spa_evicting_os_cv
; /* Objset Eviction Completion */
152 txg_list_t spa_vdev_txg_list
; /* per-txg dirty vdev list */
153 vdev_t
*spa_root_vdev
; /* top-level vdev container */
154 int spa_min_ashift
; /* of vdevs in normal class */
155 int spa_max_ashift
; /* of vdevs in normal class */
156 uint64_t spa_config_guid
; /* config pool guid */
157 uint64_t spa_load_guid
; /* spa_load initialized guid */
158 uint64_t spa_last_synced_guid
; /* last synced guid */
159 list_t spa_config_dirty_list
; /* vdevs with dirty config */
160 list_t spa_state_dirty_list
; /* vdevs with dirty state */
161 spa_aux_vdev_t spa_spares
; /* hot spares */
162 spa_aux_vdev_t spa_l2cache
; /* L2ARC cache devices */
163 nvlist_t
*spa_label_features
; /* Features for reading MOS */
164 uint64_t spa_config_object
; /* MOS object for pool config */
165 uint64_t spa_config_generation
; /* config generation number */
166 uint64_t spa_syncing_txg
; /* txg currently syncing */
167 bpobj_t spa_deferred_bpobj
; /* deferred-free bplist */
168 bplist_t spa_free_bplist
[TXG_SIZE
]; /* bplist of stuff to free */
169 uberblock_t spa_ubsync
; /* last synced uberblock */
170 uberblock_t spa_uberblock
; /* current uberblock */
171 boolean_t spa_extreme_rewind
; /* rewind past deferred frees */
172 uint64_t spa_last_io
; /* lbolt of last non-scan I/O */
173 kmutex_t spa_scrub_lock
; /* resilver/scrub lock */
174 uint64_t spa_scrub_inflight
; /* in-flight scrub I/Os */
175 kcondvar_t spa_scrub_io_cv
; /* scrub I/O completion */
176 uint8_t spa_scrub_active
; /* active or suspended? */
177 uint8_t spa_scrub_type
; /* type of scrub we're doing */
178 uint8_t spa_scrub_finished
; /* indicator to rotate logs */
179 uint8_t spa_scrub_started
; /* started since last boot */
180 uint8_t spa_scrub_reopen
; /* scrub doing vdev_reopen */
181 uint64_t spa_scan_pass_start
; /* start time per pass/reboot */
182 uint64_t spa_scan_pass_exam
; /* examined bytes per pass */
183 kmutex_t spa_async_lock
; /* protect async state */
184 kthread_t
*spa_async_thread
; /* thread doing async task */
185 int spa_async_suspended
; /* async tasks suspended */
186 kcondvar_t spa_async_cv
; /* wait for thread_exit() */
187 uint16_t spa_async_tasks
; /* async task mask */
188 char *spa_root
; /* alternate root directory */
189 uint64_t spa_ena
; /* spa-wide ereport ENA */
190 int spa_last_open_failed
; /* error if last open failed */
191 uint64_t spa_last_ubsync_txg
; /* "best" uberblock txg */
192 uint64_t spa_last_ubsync_txg_ts
; /* timestamp from that ub */
193 uint64_t spa_load_txg
; /* ub txg that loaded */
194 uint64_t spa_load_txg_ts
; /* timestamp from that ub */
195 uint64_t spa_load_meta_errors
; /* verify metadata err count */
196 uint64_t spa_load_data_errors
; /* verify data err count */
197 uint64_t spa_verify_min_txg
; /* start txg of verify scrub */
198 kmutex_t spa_errlog_lock
; /* error log lock */
199 uint64_t spa_errlog_last
; /* last error log object */
200 uint64_t spa_errlog_scrub
; /* scrub error log object */
201 kmutex_t spa_errlist_lock
; /* error list/ereport lock */
202 avl_tree_t spa_errlist_last
; /* last error list */
203 avl_tree_t spa_errlist_scrub
; /* scrub error list */
204 uint64_t spa_deflate
; /* should we deflate? */
205 uint64_t spa_history
; /* history object */
206 kmutex_t spa_history_lock
; /* history lock */
207 vdev_t
*spa_pending_vdev
; /* pending vdev additions */
208 kmutex_t spa_props_lock
; /* property lock */
209 uint64_t spa_pool_props_object
; /* object for properties */
210 uint64_t spa_bootfs
; /* default boot filesystem */
211 uint64_t spa_failmode
; /* failure mode for the pool */
212 uint64_t spa_delegation
; /* delegation on/off */
213 list_t spa_config_list
; /* previous cache file(s) */
214 /* per-CPU array of root of async I/O: */
215 zio_t
**spa_async_zio_root
;
216 zio_t
*spa_suspend_zio_root
; /* root of all suspended I/O */
217 kmutex_t spa_suspend_lock
; /* protects suspend_zio_root */
218 kcondvar_t spa_suspend_cv
; /* notification of resume */
219 uint8_t spa_suspended
; /* pool is suspended */
220 uint8_t spa_claiming
; /* pool is doing zil_claim() */
221 boolean_t spa_debug
; /* debug enabled? */
222 boolean_t spa_is_root
; /* pool is root */
223 int spa_minref
; /* num refs when first opened */
224 int spa_mode
; /* FREAD | FWRITE */
225 spa_log_state_t spa_log_state
; /* log state */
226 uint64_t spa_autoexpand
; /* lun expansion on/off */
227 ddt_t
*spa_ddt
[ZIO_CHECKSUM_FUNCTIONS
]; /* in-core DDTs */
228 uint64_t spa_ddt_stat_object
; /* DDT statistics */
229 uint64_t spa_dedup_ditto
; /* dedup ditto threshold */
230 uint64_t spa_dedup_checksum
; /* default dedup checksum */
231 uint64_t spa_dspace
; /* dspace in normal class */
232 kmutex_t spa_vdev_top_lock
; /* dueling offline/remove */
233 kmutex_t spa_proc_lock
; /* protects spa_proc* */
234 kcondvar_t spa_proc_cv
; /* spa_proc_state transitions */
235 spa_proc_state_t spa_proc_state
; /* see definition */
236 proc_t
*spa_proc
; /* "zpool-poolname" process */
237 uint64_t spa_did
; /* if procp != p0, did of t1 */
238 boolean_t spa_autoreplace
; /* autoreplace set in open */
239 int spa_vdev_locks
; /* locks grabbed */
240 uint64_t spa_creation_version
; /* version at pool creation */
241 uint64_t spa_prev_software_version
; /* See ub_software_version */
242 uint64_t spa_feat_for_write_obj
; /* required to write to pool */
243 uint64_t spa_feat_for_read_obj
; /* required to read from pool */
244 uint64_t spa_feat_desc_obj
; /* Feature descriptions */
245 uint64_t spa_feat_enabled_txg_obj
; /* Feature enabled txg */
246 kmutex_t spa_feat_stats_lock
; /* protects spa_feat_stats */
247 nvlist_t
*spa_feat_stats
; /* Cache of enabled features */
248 /* cache feature refcounts */
249 uint64_t spa_feat_refcount_cache
[SPA_FEATURES
];
250 taskqid_t spa_deadman_tqid
; /* Task id */
251 uint64_t spa_deadman_calls
; /* number of deadman calls */
252 hrtime_t spa_sync_starttime
; /* starting time of spa_sync */
253 uint64_t spa_deadman_synctime
; /* deadman expiration timer */
254 uint64_t spa_errata
; /* errata issues detected */
255 spa_stats_t spa_stats
; /* assorted spa statistics */
256 taskq_t
*spa_zvol_taskq
; /* Taskq for minor managment */
259 * spa_refcount & spa_config_lock must be the last elements
260 * because refcount_t changes size based on compilation options.
261 * In order for the MDB module to function correctly, the other
262 * fields must remain in the same location.
264 spa_config_lock_t spa_config_lock
[SCL_LOCKS
]; /* config changes */
265 refcount_t spa_refcount
; /* number of opens */
268 extern char *spa_config_path
;
270 extern void spa_taskq_dispatch_ent(spa_t
*spa
, zio_type_t t
, zio_taskq_type_t q
,
271 task_func_t
*func
, void *arg
, uint_t flags
, taskq_ent_t
*ent
);
272 extern void spa_taskq_dispatch_sync(spa_t
*, zio_type_t t
, zio_taskq_type_t q
,
273 task_func_t
*func
, void *arg
, uint_t flags
);
280 #endif /* _SYS_SPA_IMPL_H */