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, 2017 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 2013 Saso Kiselkov. All rights reserved.
27 * Copyright (c) 2016 Actifio, Inc. All rights reserved.
28 * Copyright (c) 2017 Datto Inc.
31 #ifndef _SYS_SPA_IMPL_H
32 #define _SYS_SPA_IMPL_H
36 #include <sys/vdev_removal.h>
37 #include <sys/metaslab.h>
39 #include <sys/dsl_pool.h>
40 #include <sys/uberblock_impl.h>
41 #include <sys/zfs_context.h>
43 #include <sys/refcount.h>
44 #include <sys/bplist.h>
45 #include <sys/bpobj.h>
46 #include <sys/dsl_crypt.h>
47 #include <sys/zfeature.h>
49 #include <zfeature_common.h>
55 typedef struct spa_error_entry
{
56 zbookmark_phys_t se_bookmark
;
61 typedef struct spa_history_phys
{
62 uint64_t sh_pool_create_len
; /* ending offset of zpool create */
63 uint64_t sh_phys_max_off
; /* physical EOF */
64 uint64_t sh_bof
; /* logical BOF */
65 uint64_t sh_eof
; /* logical EOF */
66 uint64_t sh_records_lost
; /* num of records overwritten */
70 * All members must be uint64_t, for byteswap purposes.
72 typedef struct spa_removing_phys
{
73 uint64_t sr_state
; /* dsl_scan_state_t */
76 * The vdev ID that we most recently attempted to remove,
77 * or -1 if no removal has been attempted.
79 uint64_t sr_removing_vdev
;
82 * The vdev ID that we most recently successfully removed,
83 * or -1 if no devices have been removed.
85 uint64_t sr_prev_indirect_vdev
;
87 uint64_t sr_start_time
;
91 * Note that we can not use the space map's or indirect mapping's
92 * accounting as a substitute for these values, because we need to
93 * count frees of not-yet-copied data as though it did the copy.
94 * Otherwise, we could get into a situation where copied > to_copy,
95 * or we complete before copied == to_copy.
97 uint64_t sr_to_copy
; /* bytes that need to be copied */
98 uint64_t sr_copied
; /* bytes that have been copied or freed */
99 } spa_removing_phys_t
;
102 * This struct is stored as an entry in the DMU_POOL_DIRECTORY_OBJECT
103 * (with key DMU_POOL_CONDENSING_INDIRECT). It is present if a condense
104 * of an indirect vdev's mapping object is in progress.
106 typedef struct spa_condensing_indirect_phys
{
108 * The vdev ID of the indirect vdev whose indirect mapping is
114 * The vdev's old obsolete spacemap. This spacemap's contents are
115 * being integrated into the new mapping.
117 uint64_t scip_prev_obsolete_sm_object
;
120 * The new mapping object that is being created.
122 uint64_t scip_next_mapping_object
;
123 } spa_condensing_indirect_phys_t
;
125 struct spa_aux_vdev
{
126 uint64_t sav_object
; /* MOS object for device list */
127 nvlist_t
*sav_config
; /* cached device config */
128 vdev_t
**sav_vdevs
; /* devices */
129 int sav_count
; /* number devices */
130 boolean_t sav_sync
; /* sync the device list */
131 nvlist_t
**sav_pending
; /* pending device additions */
132 uint_t sav_npending
; /* # pending devices */
135 typedef struct spa_config_lock
{
137 kthread_t
*scl_writer
;
138 int scl_write_wanted
;
140 refcount_t scl_count
;
143 typedef struct spa_config_dirent
{
144 list_node_t scd_link
;
146 } spa_config_dirent_t
;
148 typedef enum zio_taskq_type
{
150 ZIO_TASKQ_ISSUE_HIGH
,
152 ZIO_TASKQ_INTERRUPT_HIGH
,
157 * State machine for the zpool-poolname process. The states transitions
158 * are done as follows:
161 * PROC_NONE -> PROC_CREATED spa_activate()
162 * PROC_CREATED -> PROC_ACTIVE spa_thread()
163 * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
164 * PROC_DEACTIVATE -> PROC_GONE spa_thread()
165 * PROC_GONE -> PROC_NONE spa_deactivate()
167 typedef enum spa_proc_state
{
168 SPA_PROC_NONE
, /* spa_proc = &p0, no process created */
169 SPA_PROC_CREATED
, /* spa_activate() has proc, is waiting */
170 SPA_PROC_ACTIVE
, /* taskqs created, spa_proc set */
171 SPA_PROC_DEACTIVATE
, /* spa_deactivate() requests process exit */
172 SPA_PROC_GONE
/* spa_thread() is exiting, spa_proc = &p0 */
175 typedef struct spa_taskqs
{
177 taskq_t
**stqs_taskq
;
180 typedef enum spa_all_vdev_zap_action
{
182 AVZ_ACTION_DESTROY
, /* Destroy all per-vdev ZAPs and the AVZ. */
183 AVZ_ACTION_REBUILD
, /* Populate the new AVZ, see spa_avz_rebuild */
184 AVZ_ACTION_INITIALIZE
187 typedef enum spa_config_source
{
188 SPA_CONFIG_SRC_NONE
= 0,
189 SPA_CONFIG_SRC_SCAN
, /* scan of path (default: /dev/dsk) */
190 SPA_CONFIG_SRC_CACHEFILE
, /* any cachefile */
191 SPA_CONFIG_SRC_TRYIMPORT
, /* returned from call to tryimport */
192 SPA_CONFIG_SRC_SPLIT
, /* new pool in a pool split */
193 SPA_CONFIG_SRC_MOS
/* MOS, but not always from right txg */
194 } spa_config_source_t
;
198 * Fields protected by spa_namespace_lock.
200 char spa_name
[ZFS_MAX_DATASET_NAME_LEN
]; /* pool name */
201 char *spa_comment
; /* comment */
202 avl_node_t spa_avl
; /* node in spa_namespace_avl */
203 nvlist_t
*spa_config
; /* last synced config */
204 nvlist_t
*spa_config_syncing
; /* currently syncing config */
205 nvlist_t
*spa_config_splitting
; /* config for splitting */
206 nvlist_t
*spa_load_info
; /* info and errors from load */
207 uint64_t spa_config_txg
; /* txg of last config change */
208 int spa_sync_pass
; /* iterate-to-convergence */
209 pool_state_t spa_state
; /* pool state */
210 int spa_inject_ref
; /* injection references */
211 uint8_t spa_sync_on
; /* sync threads are running */
212 spa_load_state_t spa_load_state
; /* current load operation */
213 boolean_t spa_indirect_vdevs_loaded
; /* mappings loaded? */
214 boolean_t spa_trust_config
; /* do we trust vdev tree? */
215 spa_config_source_t spa_config_source
; /* where config comes from? */
216 uint64_t spa_import_flags
; /* import specific flags */
217 spa_taskqs_t spa_zio_taskq
[ZIO_TYPES
][ZIO_TASKQ_TYPES
];
218 dsl_pool_t
*spa_dsl_pool
;
219 boolean_t spa_is_initializing
; /* true while opening pool */
220 metaslab_class_t
*spa_normal_class
; /* normal data class */
221 metaslab_class_t
*spa_log_class
; /* intent log data class */
222 uint64_t spa_first_txg
; /* first txg after spa_open() */
223 uint64_t spa_final_txg
; /* txg of export/destroy */
224 uint64_t spa_freeze_txg
; /* freeze pool at this txg */
225 uint64_t spa_load_max_txg
; /* best initial ub_txg */
226 uint64_t spa_claim_max_txg
; /* highest claimed birth txg */
227 timespec_t spa_loaded_ts
; /* 1st successful open time */
228 objset_t
*spa_meta_objset
; /* copy of dp->dp_meta_objset */
229 kmutex_t spa_evicting_os_lock
; /* Evicting objset list lock */
230 list_t spa_evicting_os_list
; /* Objsets being evicted. */
231 kcondvar_t spa_evicting_os_cv
; /* Objset Eviction Completion */
232 txg_list_t spa_vdev_txg_list
; /* per-txg dirty vdev list */
233 vdev_t
*spa_root_vdev
; /* top-level vdev container */
234 int spa_min_ashift
; /* of vdevs in normal class */
235 int spa_max_ashift
; /* of vdevs in normal class */
236 uint64_t spa_config_guid
; /* config pool guid */
237 uint64_t spa_load_guid
; /* spa_load initialized guid */
238 uint64_t spa_last_synced_guid
; /* last synced guid */
239 list_t spa_config_dirty_list
; /* vdevs with dirty config */
240 list_t spa_state_dirty_list
; /* vdevs with dirty state */
241 kmutex_t spa_alloc_lock
;
242 avl_tree_t spa_alloc_tree
;
243 spa_aux_vdev_t spa_spares
; /* hot spares */
244 spa_aux_vdev_t spa_l2cache
; /* L2ARC cache devices */
245 nvlist_t
*spa_label_features
; /* Features for reading MOS */
246 uint64_t spa_config_object
; /* MOS object for pool config */
247 uint64_t spa_config_generation
; /* config generation number */
248 uint64_t spa_syncing_txg
; /* txg currently syncing */
249 bpobj_t spa_deferred_bpobj
; /* deferred-free bplist */
250 bplist_t spa_free_bplist
[TXG_SIZE
]; /* bplist of stuff to free */
251 zio_cksum_salt_t spa_cksum_salt
; /* secret salt for cksum */
252 /* checksum context templates */
253 kmutex_t spa_cksum_tmpls_lock
;
254 void *spa_cksum_tmpls
[ZIO_CHECKSUM_FUNCTIONS
];
255 uberblock_t spa_ubsync
; /* last synced uberblock */
256 uberblock_t spa_uberblock
; /* current uberblock */
257 boolean_t spa_extreme_rewind
; /* rewind past deferred frees */
258 kmutex_t spa_scrub_lock
; /* resilver/scrub lock */
259 uint64_t spa_scrub_inflight
; /* in-flight scrub bytes */
260 uint64_t spa_load_verify_ios
; /* in-flight verification IOs */
261 kcondvar_t spa_scrub_io_cv
; /* scrub I/O completion */
262 uint8_t spa_scrub_active
; /* active or suspended? */
263 uint8_t spa_scrub_type
; /* type of scrub we're doing */
264 uint8_t spa_scrub_finished
; /* indicator to rotate logs */
265 uint8_t spa_scrub_started
; /* started since last boot */
266 uint8_t spa_scrub_reopen
; /* scrub doing vdev_reopen */
267 uint64_t spa_scan_pass_start
; /* start time per pass/reboot */
268 uint64_t spa_scan_pass_scrub_pause
; /* scrub pause time */
269 uint64_t spa_scan_pass_scrub_spent_paused
; /* total paused */
270 uint64_t spa_scan_pass_exam
; /* examined bytes per pass */
271 uint64_t spa_scan_pass_issued
; /* issued bytes per pass */
272 kmutex_t spa_async_lock
; /* protect async state */
273 kthread_t
*spa_async_thread
; /* thread doing async task */
274 int spa_async_suspended
; /* async tasks suspended */
275 kcondvar_t spa_async_cv
; /* wait for thread_exit() */
276 uint16_t spa_async_tasks
; /* async task mask */
277 uint64_t spa_missing_tvds
; /* unopenable tvds on load */
278 uint64_t spa_missing_tvds_allowed
; /* allow loading spa? */
280 spa_removing_phys_t spa_removing_phys
;
281 spa_vdev_removal_t
*spa_vdev_removal
;
283 spa_condensing_indirect_phys_t spa_condensing_indirect_phys
;
284 spa_condensing_indirect_t
*spa_condensing_indirect
;
285 zthr_t
*spa_condense_zthr
; /* zthr doing condense. */
287 char *spa_root
; /* alternate root directory */
288 uint64_t spa_ena
; /* spa-wide ereport ENA */
289 int spa_last_open_failed
; /* error if last open failed */
290 uint64_t spa_last_ubsync_txg
; /* "best" uberblock txg */
291 uint64_t spa_last_ubsync_txg_ts
; /* timestamp from that ub */
292 uint64_t spa_load_txg
; /* ub txg that loaded */
293 uint64_t spa_load_txg_ts
; /* timestamp from that ub */
294 uint64_t spa_load_meta_errors
; /* verify metadata err count */
295 uint64_t spa_load_data_errors
; /* verify data err count */
296 uint64_t spa_verify_min_txg
; /* start txg of verify scrub */
297 kmutex_t spa_errlog_lock
; /* error log lock */
298 uint64_t spa_errlog_last
; /* last error log object */
299 uint64_t spa_errlog_scrub
; /* scrub error log object */
300 kmutex_t spa_errlist_lock
; /* error list/ereport lock */
301 avl_tree_t spa_errlist_last
; /* last error list */
302 avl_tree_t spa_errlist_scrub
; /* scrub error list */
303 uint64_t spa_deflate
; /* should we deflate? */
304 uint64_t spa_history
; /* history object */
305 kmutex_t spa_history_lock
; /* history lock */
306 vdev_t
*spa_pending_vdev
; /* pending vdev additions */
307 kmutex_t spa_props_lock
; /* property lock */
308 uint64_t spa_pool_props_object
; /* object for properties */
309 uint64_t spa_bootfs
; /* default boot filesystem */
310 uint64_t spa_failmode
; /* failure mode for the pool */
311 uint64_t spa_deadman_failmode
; /* failure mode for deadman */
312 uint64_t spa_delegation
; /* delegation on/off */
313 list_t spa_config_list
; /* previous cache file(s) */
314 /* per-CPU array of root of async I/O: */
315 zio_t
**spa_async_zio_root
;
316 zio_t
*spa_suspend_zio_root
; /* root of all suspended I/O */
317 zio_t
*spa_txg_zio
[TXG_SIZE
]; /* spa_sync() waits for this */
318 kmutex_t spa_suspend_lock
; /* protects suspend_zio_root */
319 kcondvar_t spa_suspend_cv
; /* notification of resume */
320 zio_suspend_reason_t spa_suspended
; /* pool is suspended */
321 uint8_t spa_claiming
; /* pool is doing zil_claim() */
322 boolean_t spa_is_root
; /* pool is root */
323 int spa_minref
; /* num refs when first opened */
324 int spa_mode
; /* FREAD | FWRITE */
325 spa_log_state_t spa_log_state
; /* log state */
326 uint64_t spa_autoexpand
; /* lun expansion on/off */
327 ddt_t
*spa_ddt
[ZIO_CHECKSUM_FUNCTIONS
]; /* in-core DDTs */
328 uint64_t spa_ddt_stat_object
; /* DDT statistics */
329 uint64_t spa_dedup_dspace
; /* Cache get_dedup_dspace() */
330 uint64_t spa_dedup_ditto
; /* dedup ditto threshold */
331 uint64_t spa_dedup_checksum
; /* default dedup checksum */
332 uint64_t spa_dspace
; /* dspace in normal class */
333 kmutex_t spa_vdev_top_lock
; /* dueling offline/remove */
334 kmutex_t spa_proc_lock
; /* protects spa_proc* */
335 kcondvar_t spa_proc_cv
; /* spa_proc_state transitions */
336 spa_proc_state_t spa_proc_state
; /* see definition */
337 proc_t
*spa_proc
; /* "zpool-poolname" process */
338 uint64_t spa_did
; /* if procp != p0, did of t1 */
339 boolean_t spa_autoreplace
; /* autoreplace set in open */
340 int spa_vdev_locks
; /* locks grabbed */
341 uint64_t spa_creation_version
; /* version at pool creation */
342 uint64_t spa_prev_software_version
; /* See ub_software_version */
343 uint64_t spa_feat_for_write_obj
; /* required to write to pool */
344 uint64_t spa_feat_for_read_obj
; /* required to read from pool */
345 uint64_t spa_feat_desc_obj
; /* Feature descriptions */
346 uint64_t spa_feat_enabled_txg_obj
; /* Feature enabled txg */
347 kmutex_t spa_feat_stats_lock
; /* protects spa_feat_stats */
348 nvlist_t
*spa_feat_stats
; /* Cache of enabled features */
349 /* cache feature refcounts */
350 uint64_t spa_feat_refcount_cache
[SPA_FEATURES
];
351 taskqid_t spa_deadman_tqid
; /* Task id */
352 uint64_t spa_deadman_calls
; /* number of deadman calls */
353 hrtime_t spa_sync_starttime
; /* starting time of spa_sync */
354 uint64_t spa_deadman_synctime
; /* deadman sync expiration */
355 uint64_t spa_deadman_ziotime
; /* deadman zio expiration */
356 uint64_t spa_all_vdev_zaps
; /* ZAP of per-vd ZAP obj #s */
357 spa_avz_action_t spa_avz_action
; /* destroy/rebuild AVZ? */
358 uint64_t spa_errata
; /* errata issues detected */
359 spa_stats_t spa_stats
; /* assorted spa statistics */
360 spa_keystore_t spa_keystore
; /* loaded crypto keys */
361 hrtime_t spa_ccw_fail_time
; /* Conf cache write fail time */
362 taskq_t
*spa_zvol_taskq
; /* Taskq for minor management */
363 taskq_t
*spa_prefetch_taskq
; /* Taskq for prefetch threads */
364 uint64_t spa_multihost
; /* multihost aware (mmp) */
365 mmp_thread_t spa_mmp
; /* multihost mmp thread */
368 * spa_refcount & spa_config_lock must be the last elements
369 * because refcount_t changes size based on compilation options.
370 * In order for the MDB module to function correctly, the other
371 * fields must remain in the same location.
373 spa_config_lock_t spa_config_lock
[SCL_LOCKS
]; /* config changes */
374 refcount_t spa_refcount
; /* number of opens */
376 taskq_t
*spa_upgrade_taskq
; /* taskq for upgrade jobs */
379 extern char *spa_config_path
;
381 extern void spa_taskq_dispatch_ent(spa_t
*spa
, zio_type_t t
, zio_taskq_type_t q
,
382 task_func_t
*func
, void *arg
, uint_t flags
, taskq_ent_t
*ent
);
383 extern void spa_taskq_dispatch_sync(spa_t
*, zio_type_t t
, zio_taskq_type_t q
,
384 task_func_t
*func
, void *arg
, uint_t flags
);
385 extern void spa_load_spares(spa_t
*spa
);
386 extern void spa_load_l2cache(spa_t
*spa
);
387 extern sysevent_t
*spa_event_create(spa_t
*spa
, vdev_t
*vd
, nvlist_t
*hist_nvl
,
389 extern void spa_event_post(sysevent_t
*ev
);
396 #endif /* _SYS_SPA_IMPL_H */