spa_impl.h revision 667ec66f1b4f491d5e839644e0912cad1c9e7122
2fa9e406ahrens * CDDL HEADER START
3fa9e406ahrens *
4fa9e406ahrens * The contents of this file are subject to the terms of the
5ea8dc4beschrock * Common Development and Distribution License (the "License").
6ea8dc4beschrock * You may not use this file except in compliance with the License.
7fa9e406ahrens *
8fa9e406ahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9fa9e406ahrens * or
10fa9e406ahrens * See the License for the specific language governing permissions
11fa9e406ahrens * and limitations under the License.
12fa9e406ahrens *
13fa9e406ahrens * When distributing Covered Code, include this CDDL HEADER in each
14fa9e406ahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15fa9e406ahrens * If applicable, add the following below this CDDL HEADER, with the
16fa9e406ahrens * fields enclosed by brackets "[]" replaced with your own identifying
17fa9e406ahrens * information: Portions Copyright [yyyy] [name of copyright owner]
18fa9e406ahrens *
19fa9e406ahrens * CDDL HEADER END
20fa9e406ahrens */
223f9d6adLin Ling * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
235cabbc6Prashanth Sreenivasa * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
24e9103aaGarrett D'Amore * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
25bc9014eJustin Gibbs * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
2645818eeMatthew Ahrens * Copyright 2013 Saso Kiselkov. All rights reserved.
271702cceAlek Pinchuk * Copyright (c) 2017 Datto Inc.
28fa9e406ahrens */
30fa9e406ahrens#ifndef _SYS_SPA_IMPL_H
31fa9e406ahrens#define	_SYS_SPA_IMPL_H
33fa9e406ahrens#include <sys/spa.h>
34fa9e406ahrens#include <sys/vdev.h>
355cabbc6Prashanth Sreenivasa#include <sys/vdev_removal.h>
36fa9e406ahrens#include <sys/metaslab.h>
37fa9e406ahrens#include <sys/dmu.h>
38fa9e406ahrens#include <sys/dsl_pool.h>
39fa9e406ahrens#include <sys/uberblock_impl.h>
40fa9e406ahrens#include <sys/zfs_context.h>
41fa9e406ahrens#include <sys/avl.h>
42fa9e406ahrens#include <sys/refcount.h>
43fa9e406ahrens#include <sys/bplist.h>
44cde58dbMatthew Ahrens#include <sys/bpobj.h>
455d7b4d4Matthew Ahrens#include <sys/zfeature.h>
46667ec66Serapheim Dimitropoulos#include <sys/zthr.h>
4743466aaMax Grossman#include <zfeature_common.h>
49fa9e406ahrens#ifdef	__cplusplus
50fa9e406ahrensextern "C" {
53ea8dc4beschrocktypedef struct spa_error_entry {
547802d7bMatthew Ahrens	zbookmark_phys_t	se_bookmark;
557802d7bMatthew Ahrens	char			*se_name;
567802d7bMatthew Ahrens	avl_node_t		se_avl;
57ea8dc4beschrock} spa_error_entry_t;
5906eeb2aektypedef struct spa_history_phys {
6006eeb2aek	uint64_t sh_pool_create_len;	/* ending offset of zpool create */
6106eeb2aek	uint64_t sh_phys_max_off;	/* physical EOF */
6206eeb2aek	uint64_t sh_bof;		/* logical BOF */
6306eeb2aek	uint64_t sh_eof;		/* logical EOF */
6406eeb2aek	uint64_t sh_records_lost;	/* num of records overwritten */
6506eeb2aek} spa_history_phys_t;
675cabbc6Prashanth Sreenivasa/*
685cabbc6Prashanth Sreenivasa * All members must be uint64_t, for byteswap purposes.
695cabbc6Prashanth Sreenivasa */
705cabbc6Prashanth Sreenivasatypedef struct spa_removing_phys {
715cabbc6Prashanth Sreenivasa	uint64_t sr_state; /* dsl_scan_state_t */
725cabbc6Prashanth Sreenivasa
735cabbc6Prashanth Sreenivasa	/*
745cabbc6Prashanth Sreenivasa	 * The vdev ID that we most recently attempted to remove,
755cabbc6Prashanth Sreenivasa	 * or -1 if no removal has been attempted.
765cabbc6Prashanth Sreenivasa	 */
775cabbc6Prashanth Sreenivasa	uint64_t sr_removing_vdev;
785cabbc6Prashanth Sreenivasa
795cabbc6Prashanth Sreenivasa	/*
805cabbc6Prashanth Sreenivasa	 * The vdev ID that we most recently successfully removed,
815cabbc6Prashanth Sreenivasa	 * or -1 if no devices have been removed.
825cabbc6Prashanth Sreenivasa	 */
835cabbc6Prashanth Sreenivasa	uint64_t sr_prev_indirect_vdev;
845cabbc6Prashanth Sreenivasa
855cabbc6Prashanth Sreenivasa	uint64_t sr_start_time;
865cabbc6Prashanth Sreenivasa	uint64_t sr_end_time;
875cabbc6Prashanth Sreenivasa
885cabbc6Prashanth Sreenivasa	/*
895cabbc6Prashanth Sreenivasa	 * Note that we can not use the space map's or indirect mapping's
905cabbc6Prashanth Sreenivasa	 * accounting as a substitute for these values, because we need to
915cabbc6Prashanth Sreenivasa	 * count frees of not-yet-copied data as though it did the copy.
925cabbc6Prashanth Sreenivasa	 * Otherwise, we could get into a situation where copied > to_copy,
935cabbc6Prashanth Sreenivasa	 * or we complete before copied == to_copy.
945cabbc6Prashanth Sreenivasa	 */
955cabbc6Prashanth Sreenivasa	uint64_t sr_to_copy; /* bytes that need to be copied */
965cabbc6Prashanth Sreenivasa	uint64_t sr_copied; /* bytes that have been copied or freed */
975cabbc6Prashanth Sreenivasa} spa_removing_phys_t;
985cabbc6Prashanth Sreenivasa
995cabbc6Prashanth Sreenivasa/*
1005cabbc6Prashanth Sreenivasa * This struct is stored as an entry in the DMU_POOL_DIRECTORY_OBJECT
1015cabbc6Prashanth Sreenivasa * (with key DMU_POOL_CONDENSING_INDIRECT).  It is present if a condense
1025cabbc6Prashanth Sreenivasa * of an indirect vdev's mapping object is in progress.
1035cabbc6Prashanth Sreenivasa */
1045cabbc6Prashanth Sreenivasatypedef struct spa_condensing_indirect_phys {
1055cabbc6Prashanth Sreenivasa	/*
1065cabbc6Prashanth Sreenivasa	 * The vdev ID of the indirect vdev whose indirect mapping is
1075cabbc6Prashanth Sreenivasa	 * being condensed.
1085cabbc6Prashanth Sreenivasa	 */
1095cabbc6Prashanth Sreenivasa	uint64_t	scip_vdev;
1105cabbc6Prashanth Sreenivasa
1115cabbc6Prashanth Sreenivasa	/*
1125cabbc6Prashanth Sreenivasa	 * The vdev's old obsolete spacemap.  This spacemap's contents are
1135cabbc6Prashanth Sreenivasa	 * being integrated into the new mapping.
1145cabbc6Prashanth Sreenivasa	 */
1155cabbc6Prashanth Sreenivasa	uint64_t	scip_prev_obsolete_sm_object;
1165cabbc6Prashanth Sreenivasa
1175cabbc6Prashanth Sreenivasa	/*
1185cabbc6Prashanth Sreenivasa	 * The new mapping object that is being created.
1195cabbc6Prashanth Sreenivasa	 */
1205cabbc6Prashanth Sreenivasa	uint64_t	scip_next_mapping_object;
1215cabbc6Prashanth Sreenivasa} spa_condensing_indirect_phys_t;
1225cabbc6Prashanth Sreenivasa
123fa94a07brendanstruct spa_aux_vdev {
124fa94a07brendan	uint64_t	sav_object;		/* MOS object for device list */
125fa94a07brendan	nvlist_t	*sav_config;		/* cached device config */
126fa94a07brendan	vdev_t		**sav_vdevs;		/* devices */
127fa94a07brendan	int		sav_count;		/* number devices */
128fa94a07brendan	boolean_t	sav_sync;		/* sync the device list */
129fa94a07brendan	nvlist_t	**sav_pending;		/* pending device additions */
130fa94a07brendan	uint_t		sav_npending;		/* # pending devices */
133e05725bbonwicktypedef struct spa_config_lock {
134e05725bbonwick	kmutex_t	scl_lock;
135e05725bbonwick	kthread_t	*scl_writer;
136e14bb32Jeff Bonwick	int		scl_write_wanted;
137e05725bbonwick	kcondvar_t	scl_cv;
138e05725bbonwick	refcount_t	scl_count;
139e05725bbonwick} spa_config_lock_t;
141c5904d1eschrocktypedef struct spa_config_dirent {
142c5904d1eschrock	list_node_t	scd_link;
143c5904d1eschrock	char		*scd_path;
144c5904d1eschrock} spa_config_dirent_t;
146ec94d32Adam Leventhaltypedef enum zio_taskq_type {
147e14bb32Jeff Bonwick	ZIO_TASKQ_ISSUE = 0,
14880eb36fGeorge Wilson	ZIO_TASKQ_ISSUE_HIGH,
149e14bb32Jeff Bonwick	ZIO_TASKQ_INTERRUPT,
15080eb36fGeorge Wilson	ZIO_TASKQ_INTERRUPT_HIGH,
151e14bb32Jeff Bonwick	ZIO_TASKQ_TYPES
152ec94d32Adam Leventhal} zio_taskq_type_t;
153e14bb32Jeff Bonwick
15435a5a35Jonathan Adams/*
155ec94d32Adam Leventhal * State machine for the zpool-poolname process.  The states transitions
15635a5a35Jonathan Adams * are done as follows:
15735a5a35Jonathan Adams *
15835a5a35Jonathan Adams *	From		   To			Routine
15935a5a35Jonathan Adams *	PROC_NONE	-> PROC_CREATED		spa_activate()
16035a5a35Jonathan Adams *	PROC_CREATED	-> PROC_ACTIVE		spa_thread()
16135a5a35Jonathan Adams *	PROC_ACTIVE	-> PROC_DEACTIVATE	spa_deactivate()
16235a5a35Jonathan Adams *	PROC_DEACTIVATE	-> PROC_GONE		spa_thread()
16335a5a35Jonathan Adams *	PROC_GONE	-> PROC_NONE		spa_deactivate()
16435a5a35Jonathan Adams */
16535a5a35Jonathan Adamstypedef enum spa_proc_state {
16635a5a35Jonathan Adams	SPA_PROC_NONE,		/* spa_proc = &p0, no process created */
16735a5a35Jonathan Adams	SPA_PROC_CREATED,	/* spa_activate() has proc, is waiting */
16835a5a35Jonathan Adams	SPA_PROC_ACTIVE,	/* taskqs created, spa_proc set */
16935a5a35Jonathan Adams	SPA_PROC_DEACTIVATE,	/* spa_deactivate() requests process exit */
17035a5a35Jonathan Adams	SPA_PROC_GONE		/* spa_thread() is exiting, spa_proc = &p0 */
17135a5a35Jonathan Adams} spa_proc_state_t;
17235a5a35Jonathan Adams
173ec94d32Adam Leventhaltypedef struct spa_taskqs {
174ec94d32Adam Leventhal	uint_t stqs_count;
175ec94d32Adam Leventhal	taskq_t **stqs_taskq;
176ec94d32Adam Leventhal} spa_taskqs_t;
177ec94d32Adam Leventhal
178215198aJoe Steintypedef enum spa_all_vdev_zap_action {
179215198aJoe Stein	AVZ_ACTION_NONE = 0,
180215198aJoe Stein	AVZ_ACTION_DESTROY,	/* Destroy all per-vdev ZAPs and the AVZ. */
181555da51Paul Dagnelie	AVZ_ACTION_REBUILD,	/* Populate the new AVZ, see spa_avz_rebuild */
182555da51Paul Dagnelie	AVZ_ACTION_INITIALIZE
183215198aJoe Stein} spa_avz_action_t;
184215198aJoe Stein
1856f79381Pavel Zakharovtypedef enum spa_config_source {
1866f79381Pavel Zakharov	SPA_CONFIG_SRC_NONE = 0,
1876f79381Pavel Zakharov	SPA_CONFIG_SRC_SCAN,		/* scan of path (default: /dev/dsk) */
1886f79381Pavel Zakharov	SPA_CONFIG_SRC_CACHEFILE,	/* any cachefile */
1896f79381Pavel Zakharov	SPA_CONFIG_SRC_TRYIMPORT,	/* returned from call to tryimport */
1906f79381Pavel Zakharov	SPA_CONFIG_SRC_SPLIT,		/* new pool in a pool split */
1916f79381Pavel Zakharov	SPA_CONFIG_SRC_MOS		/* MOS, but not always from right txg */
1926f79381Pavel Zakharov} spa_config_source_t;
1936f79381Pavel Zakharov
194fa9e406ahrensstruct spa {
195fa9e406ahrens	/*
196fa9e406ahrens	 * Fields protected by spa_namespace_lock.
197fa9e406ahrens	 */
1989adfa60Matthew Ahrens	char		spa_name[ZFS_MAX_DATASET_NAME_LEN];	/* pool name */
1998704186Dan McDonald	char		*spa_comment;		/* comment */
2000373e76bonwick	avl_node_t	spa_avl;		/* node in spa_namespace_avl */
2010373e76bonwick	nvlist_t	*spa_config;		/* last synced config */
2020373e76bonwick	nvlist_t	*spa_config_syncing;	/* currently syncing config */
2031195e68Mark J Musante	nvlist_t	*spa_config_splitting;	/* config for splitting */
2044b964adGeorge Wilson	nvlist_t	*spa_load_info;		/* info and errors from load */
205fa9e406ahrens	uint64_t	spa_config_txg;		/* txg of last config change */
206fa9e406ahrens	int		spa_sync_pass;		/* iterate-to-convergence */
20788b7b0fMatthew Ahrens	pool_state_t	spa_state;		/* pool state */
208ea8dc4beschrock	int		spa_inject_ref;		/* injection references */
209ea8dc4beschrock	uint8_t		spa_sync_on;		/* sync threads are running */
210ea8dc4beschrock	spa_load_state_t spa_load_state;	/* current load operation */
2115cabbc6Prashanth Sreenivasa	boolean_t	spa_indirect_vdevs_loaded; /* mappings loaded? */
2126f79381Pavel Zakharov	boolean_t	spa_trust_config;	/* do we trust vdev tree? */
2136f79381Pavel Zakharov	spa_config_source_t spa_config_source;	/* where config comes from? */
2144b964adGeorge Wilson	uint64_t	spa_import_flags;	/* import specific flags */
215ec94d32Adam Leventhal	spa_taskqs_t	spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
216fa9e406ahrens	dsl_pool_t	*spa_dsl_pool;
217ad135b5Christopher Siden	boolean_t	spa_is_initializing;	/* true while opening pool */
218fa9e406ahrens	metaslab_class_t *spa_normal_class;	/* normal data class */
2198654d02perrin	metaslab_class_t *spa_log_class;	/* intent log data class */
220fa9e406ahrens	uint64_t	spa_first_txg;		/* first txg after spa_open() */
2210373e76bonwick	uint64_t	spa_final_txg;		/* txg of export/destroy */
222fa9e406ahrens	uint64_t	spa_freeze_txg;		/* freeze pool at this txg */
223468c413Tim Haley	uint64_t	spa_load_max_txg;	/* best initial ub_txg */
224b24ab67Jeff Bonwick	uint64_t	spa_claim_max_txg;	/* highest claimed birth txg */
22511027bcTim Haley	timespec_t	spa_loaded_ts;		/* 1st successful open time */
226fa9e406ahrens	objset_t	*spa_meta_objset;	/* copy of dp->dp_meta_objset */
227bc9014eJustin Gibbs	kmutex_t	spa_evicting_os_lock;	/* Evicting objset list lock */
228bc9014eJustin Gibbs	list_t		spa_evicting_os_list;	/* Objsets being evicted. */
229bc9014eJustin Gibbs	kcondvar_t	spa_evicting_os_cv;	/* Objset Eviction Completion */
230fa9e406ahrens	txg_list_t	spa_vdev_txg_list;	/* per-txg dirty vdev list */
231fa9e406ahrens	vdev_t		*spa_root_vdev;		/* top-level vdev container */
23281cd5c5Matthew Ahrens	int		spa_min_ashift;		/* of vdevs in normal class */
23381cd5c5Matthew Ahrens	int		spa_max_ashift;		/* of vdevs in normal class */
234e9103aaGarrett D'Amore	uint64_t	spa_config_guid;	/* config pool guid */
235e9103aaGarrett D'Amore	uint64_t	spa_load_guid;		/* spa_load initialized guid */
236dfbb943George Wilson	uint64_t	spa_last_synced_guid;	/* last synced guid */
237e14bb32Jeff Bonwick	list_t		spa_config_dirty_list;	/* vdevs with dirty config */
238e14bb32Jeff Bonwick	list_t		spa_state_dirty_list;	/* vdevs with dirty state */
2390f7643cGeorge Wilson	kmutex_t	spa_alloc_lock;
2400f7643cGeorge Wilson	avl_tree_t	spa_alloc_tree;
241fa94a07brendan	spa_aux_vdev_t	spa_spares;		/* hot spares */
242fa94a07brendan	spa_aux_vdev_t	spa_l2cache;		/* L2ARC cache devices */
243ad135b5Christopher Siden	nvlist_t	*spa_label_features;	/* Features for reading MOS */
244fa9e406ahrens	uint64_t	spa_config_object;	/* MOS object for pool config */
2458f18d1fGeorge Wilson	uint64_t	spa_config_generation;	/* config generation number */
246fa9e406ahrens	uint64_t	spa_syncing_txg;	/* txg currently syncing */
247cde58dbMatthew Ahrens	bpobj_t		spa_deferred_bpobj;	/* deferred-free bplist */
248b24ab67Jeff Bonwick	bplist_t	spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
24945818eeMatthew Ahrens	zio_cksum_salt_t spa_cksum_salt;	/* secret salt for cksum */
25045818eeMatthew Ahrens	/* checksum context templates */
25145818eeMatthew Ahrens	kmutex_t	spa_cksum_tmpls_lock;
25245818eeMatthew Ahrens	void		*spa_cksum_tmpls[ZIO_CHECKSUM_FUNCTIONS];
253fa9e406ahrens	uberblock_t	spa_ubsync;		/* last synced uberblock */
254fa9e406ahrens	uberblock_t	spa_uberblock;		/* current uberblock */
255468c413Tim Haley	boolean_t	spa_extreme_rewind;	/* rewind past deferred frees */
25644ecc53George Wilson	uint64_t	spa_last_io;		/* lbolt of last non-scan I/O */
257fa9e406ahrens	kmutex_t	spa_scrub_lock;		/* resilver/scrub lock */
258fa9e406ahrens	uint64_t	spa_scrub_inflight;	/* in-flight scrub I/Os */
259fa9e406ahrens	kcondvar_t	spa_scrub_io_cv;	/* scrub I/O completion */
260fa9e406ahrens	uint8_t		spa_scrub_active;	/* active or suspended? */
261fa9e406ahrens	uint8_t		spa_scrub_type;		/* type of scrub we're doing */
2620373e76bonwick	uint8_t		spa_scrub_finished;	/* indicator to rotate logs */
263088f389ahrens	uint8_t		spa_scrub_started;	/* started since last boot */
264088f389ahrens	uint8_t		spa_scrub_reopen;	/* scrub doing vdev_reopen */
2653f9d6adLin Ling	uint64_t	spa_scan_pass_start;	/* start time per pass/reboot */
2661702cceAlek Pinchuk	uint64_t	spa_scan_pass_scrub_pause; /* scrub pause time */
2671702cceAlek Pinchuk	uint64_t	spa_scan_pass_scrub_spent_paused; /* total paused */
2683f9d6adLin Ling	uint64_t	spa_scan_pass_exam;	/* examined bytes per pass */
269ea8dc4beschrock	kmutex_t	spa_async_lock;		/* protect async state */
270ea8dc4beschrock	kthread_t	*spa_async_thread;	/* thread doing async task */
271ea8dc4beschrock	int		spa_async_suspended;	/* async tasks suspended */
272ea8dc4beschrock	kcondvar_t	spa_async_cv;		/* wait for thread_exit() */
273ea8dc4beschrock	uint16_t	spa_async_tasks;	/* async task mask */
2746f79381Pavel Zakharov	uint64_t	spa_missing_tvds;	/* unopenable tvds on load */
2756f79381Pavel Zakharov	uint64_t	spa_missing_tvds_allowed; /* allow loading spa? */
2765cabbc6Prashanth Sreenivasa
2775cabbc6Prashanth Sreenivasa	spa_removing_phys_t spa_removing_phys;
2785cabbc6Prashanth Sreenivasa	spa_vdev_removal_t *spa_vdev_removal;
2795cabbc6Prashanth Sreenivasa
2805cabbc6Prashanth Sreenivasa	spa_condensing_indirect_phys_t	spa_condensing_indirect_phys;
2815cabbc6Prashanth Sreenivasa	spa_condensing_indirect_t	*spa_condensing_indirect;
282667ec66Serapheim Dimitropoulos	zthr_t		*spa_condense_zthr;	/* zthr doing condense. */
2835cabbc6Prashanth Sreenivasa
284fa9e406ahrens	char		*spa_root;		/* alternate root directory */
285ea8dc4beschrock	uint64_t	spa_ena;		/* spa-wide ereport ENA */
286468c413Tim Haley	int		spa_last_open_failed;	/* error if last open failed */
287468c413Tim Haley	uint64_t	spa_last_ubsync_txg;	/* "best" uberblock txg */
288468c413Tim Haley	uint64_t	spa_last_ubsync_txg_ts;	/* timestamp from that ub */
289468c413Tim Haley	uint64_t	spa_load_txg;		/* ub txg that loaded */
290468c413Tim Haley	uint64_t	spa_load_txg_ts;	/* timestamp from that ub */
291468c413Tim Haley	uint64_t	spa_load_meta_errors;	/* verify metadata err count */
292468c413Tim Haley	uint64_t	spa_load_data_errors;	/* verify data err count */
293468c413Tim Haley	uint64_t	spa_verify_min_txg;	/* start txg of verify scrub */
294ea8dc4beschrock	kmutex_t	spa_errlog_lock;	/* error log lock */
295ea8dc4beschrock	uint64_t	spa_errlog_last;	/* last error log object */
296ea8dc4beschrock	uint64_t	spa_errlog_scrub;	/* scrub error log object */
297ea8dc4beschrock	kmutex_t	spa_errlist_lock;	/* error list/ereport lock */
298ea8dc4beschrock	avl_tree_t	spa_errlist_last;	/* last error list */
299ea8dc4beschrock	avl_tree_t	spa_errlist_scrub;	/* scrub error list */
30099653d4eschrock	uint64_t	spa_deflate;		/* should we deflate? */
30106eeb2aek	uint64_t	spa_history;		/* history object */
30206eeb2aek	kmutex_t	spa_history_lock;	/* history lock */
30339c2341eschrock	vdev_t		*spa_pending_vdev;	/* pending vdev additions */
304b1b8ab3lling	kmutex_t	spa_props_lock;		/* property lock */
305b1b8ab3lling	uint64_t	spa_pool_props_object;	/* object for properties */
306b1b8ab3lling	uint64_t	spa_bootfs;		/* default boot filesystem */
307e14bb32Jeff Bonwick	uint64_t	spa_failmode;		/* failure mode for the pool */
308e14bb32Jeff Bonwick	uint64_t	spa_delegation;		/* delegation on/off */
309c5904d1eschrock	list_t		spa_config_list;	/* previous cache file(s) */
3106f834bcMatthew Ahrens	/* per-CPU array of root of async I/O: */
3116f834bcMatthew Ahrens	zio_t		**spa_async_zio_root;
312e14bb32Jeff Bonwick	zio_t		*spa_suspend_zio_root;	/* root of all suspended I/O */
3135cabbc6Prashanth Sreenivasa	zio_t		*spa_txg_zio[TXG_SIZE]; /* spa_sync() waits for this */
314e14bb32Jeff Bonwick	kmutex_t	spa_suspend_lock;	/* protects suspend_zio_root */
315e14bb32Jeff Bonwick	kcondvar_t	spa_suspend_cv;		/* notification of resume */
316e14bb32Jeff Bonwick	uint8_t		spa_suspended;		/* pool is suspended */
317b24ab67Jeff Bonwick	uint8_t		spa_claiming;		/* pool is doing zil_claim() */
31809c9d37George Wilson	boolean_t	spa_debug;		/* debug enabled? */
319bf82a41eschrock	boolean_t	spa_is_root;		/* pool is root */
320088f389ahrens	int		spa_minref;		/* num refs when first opened */
3218ad4d6dJeff Bonwick	int		spa_mode;		/* FREAD | FWRITE */
322b87f3afperrin	spa_log_state_t spa_log_state;		/* log state */
323573ca77George Wilson	uint64_t	spa_autoexpand;		/* lun expansion on/off */
3247855d95Toomas Soome	uint64_t	spa_bootsize;		/* efi system partition size */
325b24ab67Jeff Bonwick	ddt_t		*spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
326b24ab67Jeff Bonwick	uint64_t	spa_ddt_stat_object;	/* DDT statistics */
327b24ab67Jeff Bonwick	uint64_t	spa_dedup_ditto;	/* dedup ditto threshold */
328b24ab67Jeff Bonwick	uint64_t	spa_dedup_checksum;	/* default dedup checksum */
329485bbbfGeorge Wilson	uint64_t	spa_dspace;		/* dspace in normal class */
330a152156Jeff Bonwick	kmutex_t	spa_vdev_top_lock;	/* dueling offline/remove */
33135a5a35Jonathan Adams	kmutex_t	spa_proc_lock;		/* protects spa_proc* */
33235a5a35Jonathan Adams	kcondvar_t	spa_proc_cv;		/* spa_proc_state transitions */
33335a5a35Jonathan Adams	spa_proc_state_t spa_proc_state;	/* see definition */
33435a5a35Jonathan Adams	struct proc	*spa_proc;		/* "zpool-poolname" process */
33535a5a35Jonathan Adams	uint64_t	spa_did;		/* if procp != p0, did of t1 */
336b693757Eric Schrock	boolean_t	spa_autoreplace;	/* autoreplace set in open */
3378f18d1fGeorge Wilson	int		spa_vdev_locks;		/* locks grabbed */
3383f9d6adLin Ling	uint64_t	spa_creation_version;	/* version at pool creation */
339ad135b5Christopher Siden	uint64_t	spa_prev_software_version; /* See ub_software_version */
340ad135b5Christopher Siden	uint64_t	spa_feat_for_write_obj;	/* required to write to pool */
341ad135b5Christopher Siden	uint64_t	spa_feat_for_read_obj;	/* required to read from pool */
342ad135b5Christopher Siden	uint64_t	spa_feat_desc_obj;	/* Feature descriptions */
34343466aaMax Grossman	uint64_t	spa_feat_enabled_txg_obj; /* Feature enabled txg */
34443466aaMax Grossman	/* cache feature refcounts */
34543466aaMax Grossman	uint64_t	spa_feat_refcount_cache[SPA_FEATURES];
346283b846George.Wilson	cyclic_id_t	spa_deadman_cycid;	/* cyclic id */
347283b846George.Wilson	uint64_t	spa_deadman_calls;	/* number of deadman calls */
34869962b5Matthew Ahrens	hrtime_t	spa_sync_starttime;	/* starting time fo spa_sync */
349283b846George.Wilson	uint64_t	spa_deadman_synctime;	/* deadman expiration timer */
350215198aJoe Stein	uint64_t	spa_all_vdev_zaps;	/* ZAP of per-vd ZAP obj #s */
351215198aJoe Stein	spa_avz_action_t	spa_avz_action;	/* destroy/rebuild AVZ? */
35269962b5Matthew Ahrens
35369962b5Matthew Ahrens	/*
35469962b5Matthew Ahrens	 * spa_iokstat_lock protects spa_iokstat and
35569962b5Matthew Ahrens	 * spa_queue_stats[].
35669962b5Matthew Ahrens	 */
35769962b5Matthew Ahrens	kmutex_t	spa_iokstat_lock;
358c3a6601Matthew Ahrens	struct kstat	*spa_iokstat;		/* kstat of io to this pool */
35969962b5Matthew Ahrens	struct {
36069962b5Matthew Ahrens		int spa_active;
36169962b5Matthew Ahrens		int spa_queued;
36269962b5Matthew Ahrens	} spa_queue_stats[ZIO_PRIORITY_NUM_QUEUEABLE];
36369962b5Matthew Ahrens
3643cb69f7Will Andrews	hrtime_t	spa_ccw_fail_time;	/* Conf cache write fail time */
36569962b5Matthew Ahrens
366fa9e406ahrens	/*
367f717074Will Andrews	 * spa_refcount & spa_config_lock must be the last elements
36891ebeefahrens	 * because refcount_t changes size based on compilation options.
36991ebeefahrens	 * In order for the MDB module to function correctly, the other
37091ebeefahrens	 * fields must remain in the same location.
371fa9e406ahrens	 */
372e14bb32Jeff Bonwick	spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
373fa9e406ahrens	refcount_t	spa_refcount;		/* number of opens */
376c5904d1eschrockextern const char *spa_config_path;
378ec94d32Adam Leventhalextern void spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q,
379ec94d32Adam Leventhal    task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent);
3805cabbc6Prashanth Sreenivasaextern void spa_load_spares(spa_t *spa);
3815cabbc6Prashanth Sreenivasaextern void spa_load_l2cache(spa_t *spa);
382ec94d32Adam Leventhal
383fa9e406ahrens#ifdef	__cplusplus
387fa9e406ahrens#endif	/* _SYS_SPA_IMPL_H */