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 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
26 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
27 * Copyright 2013 Saso Kiselkov. All rights reserved.
30 #ifndef _SYS_SPA_IMPL_H
31 #define _SYS_SPA_IMPL_H
35 #include <sys/metaslab.h>
37 #include <sys/dsl_pool.h>
38 #include <sys/uberblock_impl.h>
39 #include <sys/zfs_context.h>
41 #include <sys/refcount.h>
42 #include <sys/bplist.h>
43 #include <sys/bpobj.h>
44 #include <sys/zfeature.h>
45 #include <zfeature_common.h>
51 typedef struct spa_error_entry {
52 zbookmark_phys_t se_bookmark;
57 typedef struct spa_history_phys {
58 uint64_t sh_pool_create_len; /* ending offset of zpool create */
59 uint64_t sh_phys_max_off; /* physical EOF */
60 uint64_t sh_bof; /* logical BOF */
61 uint64_t sh_eof; /* logical EOF */
62 uint64_t sh_records_lost; /* num of records overwritten */
66 uint64_t sav_object; /* MOS object for device list */
67 nvlist_t *sav_config; /* cached device config */
68 vdev_t **sav_vdevs; /* devices */
69 int sav_count; /* number devices */
70 boolean_t sav_sync; /* sync the device list */
71 nvlist_t **sav_pending; /* pending device additions */
72 uint_t sav_npending; /* # pending devices */
75 typedef struct spa_config_lock {
77 kthread_t *scl_writer;
83 typedef struct spa_config_dirent {
86 } spa_config_dirent_t;
88 typedef enum zio_taskq_type {
92 ZIO_TASKQ_INTERRUPT_HIGH,
97 * State machine for the zpool-poolname process. The states transitions
98 * are done as follows:
101 * PROC_NONE -> PROC_CREATED spa_activate()
102 * PROC_CREATED -> PROC_ACTIVE spa_thread()
103 * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
104 * PROC_DEACTIVATE -> PROC_GONE spa_thread()
105 * PROC_GONE -> PROC_NONE spa_deactivate()
107 typedef enum spa_proc_state {
108 SPA_PROC_NONE, /* spa_proc = &p0, no process created */
109 SPA_PROC_CREATED, /* spa_activate() has proc, is waiting */
110 SPA_PROC_ACTIVE, /* taskqs created, spa_proc set */
111 SPA_PROC_DEACTIVATE, /* spa_deactivate() requests process exit */
112 SPA_PROC_GONE /* spa_thread() is exiting, spa_proc = &p0 */
115 typedef struct spa_taskqs {
117 taskq_t **stqs_taskq;
122 * Fields protected by spa_namespace_lock.
124 char spa_name[ZFS_MAX_DATASET_NAME_LEN]; /* pool name */
125 char *spa_comment; /* comment */
126 avl_node_t spa_avl; /* node in spa_namespace_avl */
127 nvlist_t *spa_config; /* last synced config */
128 nvlist_t *spa_config_syncing; /* currently syncing config */
129 nvlist_t *spa_config_splitting; /* config for splitting */
130 nvlist_t *spa_load_info; /* info and errors from load */
131 uint64_t spa_config_txg; /* txg of last config change */
132 int spa_sync_pass; /* iterate-to-convergence */
133 pool_state_t spa_state; /* pool state */
134 int spa_inject_ref; /* injection references */
135 uint8_t spa_sync_on; /* sync threads are running */
136 spa_load_state_t spa_load_state; /* current load operation */
137 uint64_t spa_import_flags; /* import specific flags */
138 spa_taskqs_t spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
139 dsl_pool_t *spa_dsl_pool;
140 boolean_t spa_is_initializing; /* true while opening pool */
141 metaslab_class_t *spa_normal_class; /* normal data class */
142 metaslab_class_t *spa_log_class; /* intent log data class */
143 uint64_t spa_first_txg; /* first txg after spa_open() */
144 uint64_t spa_final_txg; /* txg of export/destroy */
145 uint64_t spa_freeze_txg; /* freeze pool at this txg */
146 uint64_t spa_load_max_txg; /* best initial ub_txg */
147 uint64_t spa_claim_max_txg; /* highest claimed birth txg */
148 timespec_t spa_loaded_ts; /* 1st successful open time */
149 objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */
150 kmutex_t spa_evicting_os_lock; /* Evicting objset list lock */
151 list_t spa_evicting_os_list; /* Objsets being evicted. */
152 kcondvar_t spa_evicting_os_cv; /* Objset Eviction Completion */
153 txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */
154 vdev_t *spa_root_vdev; /* top-level vdev container */
155 int spa_min_ashift; /* of vdevs in normal class */
156 int spa_max_ashift; /* of vdevs in normal class */
157 uint64_t spa_config_guid; /* config pool guid */
158 uint64_t spa_load_guid; /* spa_load initialized guid */
159 uint64_t spa_last_synced_guid; /* last synced guid */
160 list_t spa_config_dirty_list; /* vdevs with dirty config */
161 list_t spa_state_dirty_list; /* vdevs with dirty state */
162 spa_aux_vdev_t spa_spares; /* hot spares */
163 spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */
164 nvlist_t *spa_label_features; /* Features for reading MOS */
165 uint64_t spa_config_object; /* MOS object for pool config */
166 uint64_t spa_config_generation; /* config generation number */
167 uint64_t spa_syncing_txg; /* txg currently syncing */
168 bpobj_t spa_deferred_bpobj; /* deferred-free bplist */
169 bplist_t spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
170 zio_cksum_salt_t spa_cksum_salt; /* secret salt for cksum */
171 /* checksum context templates */
172 kmutex_t spa_cksum_tmpls_lock;
173 void *spa_cksum_tmpls[ZIO_CHECKSUM_FUNCTIONS];
174 uberblock_t spa_ubsync; /* last synced uberblock */
175 uberblock_t spa_uberblock; /* current uberblock */
176 boolean_t spa_extreme_rewind; /* rewind past deferred frees */
177 uint64_t spa_last_io; /* lbolt of last non-scan I/O */
178 kmutex_t spa_scrub_lock; /* resilver/scrub lock */
179 uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */
180 kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */
181 uint8_t spa_scrub_active; /* active or suspended? */
182 uint8_t spa_scrub_type; /* type of scrub we're doing */
183 uint8_t spa_scrub_finished; /* indicator to rotate logs */
184 uint8_t spa_scrub_started; /* started since last boot */
185 uint8_t spa_scrub_reopen; /* scrub doing vdev_reopen */
186 uint64_t spa_scan_pass_start; /* start time per pass/reboot */
187 uint64_t spa_scan_pass_exam; /* examined bytes per pass */
188 kmutex_t spa_async_lock; /* protect async state */
189 kthread_t *spa_async_thread; /* thread doing async task */
190 kthread_t *spa_async_thread_vd; /* thread doing vd async task */
191 int spa_async_suspended; /* async tasks suspended */
192 kcondvar_t spa_async_cv; /* wait for thread_exit() */
193 uint16_t spa_async_tasks; /* async task mask */
194 char *spa_root; /* alternate root directory */
195 uint64_t spa_ena; /* spa-wide ereport ENA */
196 int spa_last_open_failed; /* error if last open failed */
197 uint64_t spa_last_ubsync_txg; /* "best" uberblock txg */
198 uint64_t spa_last_ubsync_txg_ts; /* timestamp from that ub */
199 uint64_t spa_load_txg; /* ub txg that loaded */
200 uint64_t spa_load_txg_ts; /* timestamp from that ub */
201 uint64_t spa_load_meta_errors; /* verify metadata err count */
202 uint64_t spa_load_data_errors; /* verify data err count */
203 uint64_t spa_verify_min_txg; /* start txg of verify scrub */
204 kmutex_t spa_errlog_lock; /* error log lock */
205 uint64_t spa_errlog_last; /* last error log object */
206 uint64_t spa_errlog_scrub; /* scrub error log object */
207 kmutex_t spa_errlist_lock; /* error list/ereport lock */
208 avl_tree_t spa_errlist_last; /* last error list */
209 avl_tree_t spa_errlist_scrub; /* scrub error list */
210 uint64_t spa_deflate; /* should we deflate? */
211 uint64_t spa_history; /* history object */
212 kmutex_t spa_history_lock; /* history lock */
213 vdev_t *spa_pending_vdev; /* pending vdev additions */
214 kmutex_t spa_props_lock; /* property lock */
215 uint64_t spa_pool_props_object; /* object for properties */
216 uint64_t spa_bootfs; /* default boot filesystem */
217 uint64_t spa_failmode; /* failure mode for the pool */
218 uint64_t spa_delegation; /* delegation on/off */
219 list_t spa_config_list; /* previous cache file(s) */
220 /* per-CPU array of root of async I/O: */
221 zio_t **spa_async_zio_root;
222 zio_t *spa_suspend_zio_root; /* root of all suspended I/O */
223 kmutex_t spa_suspend_lock; /* protects suspend_zio_root */
224 kcondvar_t spa_suspend_cv; /* notification of resume */
225 uint8_t spa_suspended; /* pool is suspended */
226 uint8_t spa_claiming; /* pool is doing zil_claim() */
227 boolean_t spa_debug; /* debug enabled? */
228 boolean_t spa_is_root; /* pool is root */
229 int spa_minref; /* num refs when first opened */
230 int spa_mode; /* FREAD | FWRITE */
231 spa_log_state_t spa_log_state; /* log state */
232 uint64_t spa_autoexpand; /* lun expansion on/off */
233 ddt_t *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
234 uint64_t spa_ddt_stat_object; /* DDT statistics */
235 uint64_t spa_dedup_ditto; /* dedup ditto threshold */
236 uint64_t spa_dedup_checksum; /* default dedup checksum */
237 uint64_t spa_dspace; /* dspace in normal class */
238 kmutex_t spa_vdev_top_lock; /* dueling offline/remove */
239 kmutex_t spa_proc_lock; /* protects spa_proc* */
240 kcondvar_t spa_proc_cv; /* spa_proc_state transitions */
241 spa_proc_state_t spa_proc_state; /* see definition */
242 struct proc *spa_proc; /* "zpool-poolname" process */
243 uint64_t spa_did; /* if procp != p0, did of t1 */
244 kthread_t *spa_trim_thread; /* thread sending TRIM I/Os */
245 kmutex_t spa_trim_lock; /* protects spa_trim_cv */
246 kcondvar_t spa_trim_cv; /* used to notify TRIM thread */
247 boolean_t spa_autoreplace; /* autoreplace set in open */
248 int spa_vdev_locks; /* locks grabbed */
249 uint64_t spa_creation_version; /* version at pool creation */
250 uint64_t spa_prev_software_version; /* See ub_software_version */
251 uint64_t spa_feat_for_write_obj; /* required to write to pool */
252 uint64_t spa_feat_for_read_obj; /* required to read from pool */
253 uint64_t spa_feat_desc_obj; /* Feature descriptions */
254 uint64_t spa_feat_enabled_txg_obj; /* Feature enabled txg */
255 /* cache feature refcounts */
256 uint64_t spa_feat_refcount_cache[SPA_FEATURES];
258 cyclic_id_t spa_deadman_cycid; /* cyclic id */
261 struct callout spa_deadman_cycid; /* callout id */
264 uint64_t spa_deadman_calls; /* number of deadman calls */
265 hrtime_t spa_sync_starttime; /* starting time fo spa_sync */
266 uint64_t spa_deadman_synctime; /* deadman expiration timer */
269 * spa_iokstat_lock protects spa_iokstat and
272 kmutex_t spa_iokstat_lock;
273 struct kstat *spa_iokstat; /* kstat of io to this pool */
277 } spa_queue_stats[ZIO_PRIORITY_NUM_QUEUEABLE];
279 hrtime_t spa_ccw_fail_time; /* Conf cache write fail time */
282 * spa_refcount & spa_config_lock must be the last elements
283 * because refcount_t changes size based on compilation options.
284 * In order for the MDB module to function correctly, the other
285 * fields must remain in the same location.
287 spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
288 refcount_t spa_refcount; /* number of opens */
290 boolean_t spa_splitting_newspa; /* creating new spa in split */
294 extern const char *spa_config_path;
296 extern void spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q,
297 task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent);
303 #endif /* _SYS_SPA_IMPL_H */