xref: /onnv-gate/usr/src/uts/common/fs/zfs/sys/spa_impl.h (revision 12949:b521d551715f)
1789Sahrens /*
2789Sahrens  * CDDL HEADER START
3789Sahrens  *
4789Sahrens  * The contents of this file are subject to the terms of the
51544Seschrock  * Common Development and Distribution License (the "License").
61544Seschrock  * You may not use this file except in compliance with the License.
7789Sahrens  *
8789Sahrens  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9789Sahrens  * or http://www.opensolaris.org/os/licensing.
10789Sahrens  * See the License for the specific language governing permissions
11789Sahrens  * and limitations under the License.
12789Sahrens  *
13789Sahrens  * When distributing Covered Code, include this CDDL HEADER in each
14789Sahrens  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15789Sahrens  * If applicable, add the following below this CDDL HEADER, with the
16789Sahrens  * fields enclosed by brackets "[]" replaced with your own identifying
17789Sahrens  * information: Portions Copyright [yyyy] [name of copyright owner]
18789Sahrens  *
19789Sahrens  * CDDL HEADER END
20789Sahrens  */
21789Sahrens /*
2212296SLin.Ling@Sun.COM  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23789Sahrens  */
24789Sahrens 
25789Sahrens #ifndef _SYS_SPA_IMPL_H
26789Sahrens #define	_SYS_SPA_IMPL_H
27789Sahrens 
28789Sahrens #include <sys/spa.h>
29789Sahrens #include <sys/vdev.h>
30789Sahrens #include <sys/metaslab.h>
31789Sahrens #include <sys/dmu.h>
32789Sahrens #include <sys/dsl_pool.h>
33789Sahrens #include <sys/uberblock_impl.h>
34789Sahrens #include <sys/zfs_context.h>
35789Sahrens #include <sys/avl.h>
36789Sahrens #include <sys/refcount.h>
37789Sahrens #include <sys/bplist.h>
3812470SMatthew.Ahrens@Sun.COM #include <sys/bpobj.h>
39789Sahrens 
40789Sahrens #ifdef	__cplusplus
41789Sahrens extern "C" {
42789Sahrens #endif
43789Sahrens 
441544Seschrock typedef struct spa_error_entry {
451544Seschrock 	zbookmark_t	se_bookmark;
461544Seschrock 	char		*se_name;
471544Seschrock 	avl_node_t	se_avl;
481544Seschrock } spa_error_entry_t;
491544Seschrock 
502926Sek110237 typedef struct spa_history_phys {
512926Sek110237 	uint64_t sh_pool_create_len;	/* ending offset of zpool create */
522926Sek110237 	uint64_t sh_phys_max_off;	/* physical EOF */
532926Sek110237 	uint64_t sh_bof;		/* logical BOF */
542926Sek110237 	uint64_t sh_eof;		/* logical EOF */
552926Sek110237 	uint64_t sh_records_lost;	/* num of records overwritten */
562926Sek110237 } spa_history_phys_t;
572926Sek110237 
585450Sbrendan struct spa_aux_vdev {
595450Sbrendan 	uint64_t	sav_object;		/* MOS object for device list */
605450Sbrendan 	nvlist_t	*sav_config;		/* cached device config */
615450Sbrendan 	vdev_t		**sav_vdevs;		/* devices */
625450Sbrendan 	int		sav_count;		/* number devices */
635450Sbrendan 	boolean_t	sav_sync;		/* sync the device list */
645450Sbrendan 	nvlist_t	**sav_pending;		/* pending device additions */
655450Sbrendan 	uint_t		sav_npending;		/* # pending devices */
665450Sbrendan };
675450Sbrendan 
685530Sbonwick typedef struct spa_config_lock {
695530Sbonwick 	kmutex_t	scl_lock;
705530Sbonwick 	kthread_t	*scl_writer;
717754SJeff.Bonwick@Sun.COM 	int		scl_write_wanted;
725530Sbonwick 	kcondvar_t	scl_cv;
735530Sbonwick 	refcount_t	scl_count;
745530Sbonwick } spa_config_lock_t;
755530Sbonwick 
766643Seschrock typedef struct spa_config_dirent {
776643Seschrock 	list_node_t	scd_link;
786643Seschrock 	char		*scd_path;
796643Seschrock } spa_config_dirent_t;
806643Seschrock 
817754SJeff.Bonwick@Sun.COM enum zio_taskq_type {
827754SJeff.Bonwick@Sun.COM 	ZIO_TASKQ_ISSUE = 0,
8311146SGeorge.Wilson@Sun.COM 	ZIO_TASKQ_ISSUE_HIGH,
847754SJeff.Bonwick@Sun.COM 	ZIO_TASKQ_INTERRUPT,
8511146SGeorge.Wilson@Sun.COM 	ZIO_TASKQ_INTERRUPT_HIGH,
867754SJeff.Bonwick@Sun.COM 	ZIO_TASKQ_TYPES
877754SJeff.Bonwick@Sun.COM };
887754SJeff.Bonwick@Sun.COM 
8911173SJonathan.Adams@Sun.COM /*
9011173SJonathan.Adams@Sun.COM  * State machine for the zpool-pooname process.  The states transitions
9111173SJonathan.Adams@Sun.COM  * are done as follows:
9211173SJonathan.Adams@Sun.COM  *
9311173SJonathan.Adams@Sun.COM  *	From		   To			Routine
9411173SJonathan.Adams@Sun.COM  *	PROC_NONE	-> PROC_CREATED		spa_activate()
9511173SJonathan.Adams@Sun.COM  *	PROC_CREATED	-> PROC_ACTIVE		spa_thread()
9611173SJonathan.Adams@Sun.COM  *	PROC_ACTIVE	-> PROC_DEACTIVATE	spa_deactivate()
9711173SJonathan.Adams@Sun.COM  *	PROC_DEACTIVATE	-> PROC_GONE		spa_thread()
9811173SJonathan.Adams@Sun.COM  *	PROC_GONE	-> PROC_NONE		spa_deactivate()
9911173SJonathan.Adams@Sun.COM  */
10011173SJonathan.Adams@Sun.COM typedef enum spa_proc_state {
10111173SJonathan.Adams@Sun.COM 	SPA_PROC_NONE,		/* spa_proc = &p0, no process created */
10211173SJonathan.Adams@Sun.COM 	SPA_PROC_CREATED,	/* spa_activate() has proc, is waiting */
10311173SJonathan.Adams@Sun.COM 	SPA_PROC_ACTIVE,	/* taskqs created, spa_proc set */
10411173SJonathan.Adams@Sun.COM 	SPA_PROC_DEACTIVATE,	/* spa_deactivate() requests process exit */
10511173SJonathan.Adams@Sun.COM 	SPA_PROC_GONE		/* spa_thread() is exiting, spa_proc = &p0 */
10611173SJonathan.Adams@Sun.COM } spa_proc_state_t;
10711173SJonathan.Adams@Sun.COM 
108789Sahrens struct spa {
109789Sahrens 	/*
110789Sahrens 	 * Fields protected by spa_namespace_lock.
111789Sahrens 	 */
1127754SJeff.Bonwick@Sun.COM 	char		spa_name[MAXNAMELEN];	/* pool name */
1131635Sbonwick 	avl_node_t	spa_avl;		/* node in spa_namespace_avl */
1141635Sbonwick 	nvlist_t	*spa_config;		/* last synced config */
1151635Sbonwick 	nvlist_t	*spa_config_syncing;	/* currently syncing config */
11611422SMark.Musante@Sun.COM 	nvlist_t	*spa_config_splitting;	/* config for splitting */
117*12949SGeorge.Wilson@Sun.COM 	nvlist_t	*spa_load_info;		/* info and errors from load */
118789Sahrens 	uint64_t	spa_config_txg;		/* txg of last config change */
119789Sahrens 	int		spa_sync_pass;		/* iterate-to-convergence */
1207837SMatthew.Ahrens@Sun.COM 	pool_state_t	spa_state;		/* pool state */
1211544Seschrock 	int		spa_inject_ref;		/* injection references */
1221544Seschrock 	uint8_t		spa_sync_on;		/* sync threads are running */
1231544Seschrock 	spa_load_state_t spa_load_state;	/* current load operation */
124*12949SGeorge.Wilson@Sun.COM 	uint64_t	spa_import_flags;	/* import specific flags */
1257754SJeff.Bonwick@Sun.COM 	taskq_t		*spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
126789Sahrens 	dsl_pool_t	*spa_dsl_pool;
127789Sahrens 	metaslab_class_t *spa_normal_class;	/* normal data class */
1284527Sperrin 	metaslab_class_t *spa_log_class;	/* intent log data class */
129789Sahrens 	uint64_t	spa_first_txg;		/* first txg after spa_open() */
1301635Sbonwick 	uint64_t	spa_final_txg;		/* txg of export/destroy */
131789Sahrens 	uint64_t	spa_freeze_txg;		/* freeze pool at this txg */
13210921STim.Haley@Sun.COM 	uint64_t	spa_load_max_txg;	/* best initial ub_txg */
13310922SJeff.Bonwick@Sun.COM 	uint64_t	spa_claim_max_txg;	/* highest claimed birth txg */
13412817STim.Haley@Sun.COM 	timespec_t	spa_loaded_ts;		/* 1st successful open time */
135789Sahrens 	objset_t	*spa_meta_objset;	/* copy of dp->dp_meta_objset */
136789Sahrens 	txg_list_t	spa_vdev_txg_list;	/* per-txg dirty vdev list */
137789Sahrens 	vdev_t		*spa_root_vdev;		/* top-level vdev container */
1382174Seschrock 	uint64_t	spa_load_guid;		/* initial guid for spa_load */
1397754SJeff.Bonwick@Sun.COM 	list_t		spa_config_dirty_list;	/* vdevs with dirty config */
1407754SJeff.Bonwick@Sun.COM 	list_t		spa_state_dirty_list;	/* vdevs with dirty state */
1415450Sbrendan 	spa_aux_vdev_t	spa_spares;		/* hot spares */
1425450Sbrendan 	spa_aux_vdev_t	spa_l2cache;		/* L2ARC cache devices */
143789Sahrens 	uint64_t	spa_config_object;	/* MOS object for pool config */
14410685SGeorge.Wilson@Sun.COM 	uint64_t	spa_config_generation;	/* config generation number */
145789Sahrens 	uint64_t	spa_syncing_txg;	/* txg currently syncing */
14612470SMatthew.Ahrens@Sun.COM 	bpobj_t		spa_deferred_bpobj;	/* deferred-free bplist */
14710922SJeff.Bonwick@Sun.COM 	bplist_t	spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
148789Sahrens 	uberblock_t	spa_ubsync;		/* last synced uberblock */
149789Sahrens 	uberblock_t	spa_uberblock;		/* current uberblock */
15010921STim.Haley@Sun.COM 	boolean_t	spa_extreme_rewind;	/* rewind past deferred frees */
15112586SGeorge.Wilson@Sun.COM 	uint64_t	spa_last_io;		/* lbolt of last non-scan I/O */
152789Sahrens 	kmutex_t	spa_scrub_lock;		/* resilver/scrub lock */
153789Sahrens 	uint64_t	spa_scrub_inflight;	/* in-flight scrub I/Os */
154789Sahrens 	kcondvar_t	spa_scrub_io_cv;	/* scrub I/O completion */
155789Sahrens 	uint8_t		spa_scrub_active;	/* active or suspended? */
156789Sahrens 	uint8_t		spa_scrub_type;		/* type of scrub we're doing */
1571635Sbonwick 	uint8_t		spa_scrub_finished;	/* indicator to rotate logs */
1587046Sahrens 	uint8_t		spa_scrub_started;	/* started since last boot */
1597046Sahrens 	uint8_t		spa_scrub_reopen;	/* scrub doing vdev_reopen */
16012296SLin.Ling@Sun.COM 	uint64_t	spa_scan_pass_start;	/* start time per pass/reboot */
16112296SLin.Ling@Sun.COM 	uint64_t	spa_scan_pass_exam;	/* examined bytes per pass */
1621544Seschrock 	kmutex_t	spa_async_lock;		/* protect async state */
1631544Seschrock 	kthread_t	*spa_async_thread;	/* thread doing async task */
1641544Seschrock 	int		spa_async_suspended;	/* async tasks suspended */
1651544Seschrock 	kcondvar_t	spa_async_cv;		/* wait for thread_exit() */
1661544Seschrock 	uint16_t	spa_async_tasks;	/* async task mask */
167789Sahrens 	char		*spa_root;		/* alternate root directory */
1681544Seschrock 	uint64_t	spa_ena;		/* spa-wide ereport ENA */
16910921STim.Haley@Sun.COM 	int		spa_last_open_failed;	/* error if last open failed */
17010921STim.Haley@Sun.COM 	uint64_t	spa_last_ubsync_txg;	/* "best" uberblock txg */
17110921STim.Haley@Sun.COM 	uint64_t	spa_last_ubsync_txg_ts;	/* timestamp from that ub */
17210921STim.Haley@Sun.COM 	uint64_t	spa_load_txg;		/* ub txg that loaded */
17310921STim.Haley@Sun.COM 	uint64_t	spa_load_txg_ts;	/* timestamp from that ub */
17410921STim.Haley@Sun.COM 	uint64_t	spa_load_meta_errors;	/* verify metadata err count */
17510921STim.Haley@Sun.COM 	uint64_t	spa_load_data_errors;	/* verify data err count */
17610921STim.Haley@Sun.COM 	uint64_t	spa_verify_min_txg;	/* start txg of verify scrub */
1771544Seschrock 	kmutex_t	spa_errlog_lock;	/* error log lock */
1781544Seschrock 	uint64_t	spa_errlog_last;	/* last error log object */
1791544Seschrock 	uint64_t	spa_errlog_scrub;	/* scrub error log object */
1801544Seschrock 	kmutex_t	spa_errlist_lock;	/* error list/ereport lock */
1811544Seschrock 	avl_tree_t	spa_errlist_last;	/* last error list */
1821544Seschrock 	avl_tree_t	spa_errlist_scrub;	/* scrub error list */
1832082Seschrock 	uint64_t	spa_deflate;		/* should we deflate? */
1842926Sek110237 	uint64_t	spa_history;		/* history object */
1852926Sek110237 	kmutex_t	spa_history_lock;	/* history lock */
1863377Seschrock 	vdev_t		*spa_pending_vdev;	/* pending vdev additions */
1873912Slling 	kmutex_t	spa_props_lock;		/* property lock */
1883912Slling 	uint64_t	spa_pool_props_object;	/* object for properties */
1893912Slling 	uint64_t	spa_bootfs;		/* default boot filesystem */
1907754SJeff.Bonwick@Sun.COM 	uint64_t	spa_failmode;		/* failure mode for the pool */
1917754SJeff.Bonwick@Sun.COM 	uint64_t	spa_delegation;		/* delegation on/off */
1926643Seschrock 	list_t		spa_config_list;	/* previous cache file(s) */
1939234SGeorge.Wilson@Sun.COM 	zio_t		*spa_async_zio_root;	/* root of all async I/O */
1947754SJeff.Bonwick@Sun.COM 	zio_t		*spa_suspend_zio_root;	/* root of all suspended I/O */
1957754SJeff.Bonwick@Sun.COM 	kmutex_t	spa_suspend_lock;	/* protects suspend_zio_root */
1967754SJeff.Bonwick@Sun.COM 	kcondvar_t	spa_suspend_cv;		/* notification of resume */
1977754SJeff.Bonwick@Sun.COM 	uint8_t		spa_suspended;		/* pool is suspended */
19810922SJeff.Bonwick@Sun.COM 	uint8_t		spa_claiming;		/* pool is doing zil_claim() */
1996673Seschrock 	boolean_t	spa_is_root;		/* pool is root */
2007046Sahrens 	int		spa_minref;		/* num refs when first opened */
2018241SJeff.Bonwick@Sun.COM 	int		spa_mode;		/* FREAD | FWRITE */
2027294Sperrin 	spa_log_state_t spa_log_state;		/* log state */
2039816SGeorge.Wilson@Sun.COM 	uint64_t	spa_autoexpand;		/* lun expansion on/off */
20410922SJeff.Bonwick@Sun.COM 	ddt_t		*spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
20510922SJeff.Bonwick@Sun.COM 	uint64_t	spa_ddt_stat_object;	/* DDT statistics */
20610922SJeff.Bonwick@Sun.COM 	uint64_t	spa_dedup_ditto;	/* dedup ditto threshold */
20710922SJeff.Bonwick@Sun.COM 	uint64_t	spa_dedup_checksum;	/* default dedup checksum */
20810956SGeorge.Wilson@Sun.COM 	uint64_t	spa_dspace;		/* dspace in normal class */
20910974SJeff.Bonwick@Sun.COM 	kmutex_t	spa_vdev_top_lock;	/* dueling offline/remove */
21011173SJonathan.Adams@Sun.COM 	kmutex_t	spa_proc_lock;		/* protects spa_proc* */
21111173SJonathan.Adams@Sun.COM 	kcondvar_t	spa_proc_cv;		/* spa_proc_state transitions */
21211173SJonathan.Adams@Sun.COM 	spa_proc_state_t spa_proc_state;	/* see definition */
21311173SJonathan.Adams@Sun.COM 	struct proc	*spa_proc;		/* "zpool-poolname" process */
21411173SJonathan.Adams@Sun.COM 	uint64_t	spa_did;		/* if procp != p0, did of t1 */
21510672SEric.Schrock@Sun.COM 	boolean_t	spa_autoreplace;	/* autoreplace set in open */
21610685SGeorge.Wilson@Sun.COM 	int		spa_vdev_locks;		/* locks grabbed */
21712296SLin.Ling@Sun.COM 	uint64_t	spa_creation_version;	/* version at pool creation */
21812296SLin.Ling@Sun.COM 	uint64_t	spa_prev_software_version;
219789Sahrens 	/*
2204787Sahrens 	 * spa_refcnt & spa_config_lock must be the last elements
2214787Sahrens 	 * because refcount_t changes size based on compilation options.
2224787Sahrens 	 * In order for the MDB module to function correctly, the other
2234787Sahrens 	 * fields must remain in the same location.
224789Sahrens 	 */
2257754SJeff.Bonwick@Sun.COM 	spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
226789Sahrens 	refcount_t	spa_refcount;		/* number of opens */
227789Sahrens };
228789Sahrens 
2296643Seschrock extern const char *spa_config_path;
230789Sahrens 
231789Sahrens #ifdef	__cplusplus
232789Sahrens }
233789Sahrens #endif
234789Sahrens 
235789Sahrens #endif	/* _SYS_SPA_IMPL_H */
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