[mirror_zfs.git] / module / zfs / include / sys / dsl_pool.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef	_SYS_DSL_POOL_H
#define	_SYS_DSL_POOL_H

#include <sys/spa.h>
#include <sys/txg.h>
#include <sys/txg_impl.h>
#include <sys/zfs_context.h>
#include <sys/zio.h>
#include <sys/dnode.h>

#ifdef	__cplusplus
extern "C" {
#endif

struct objset;
struct dsl_dir;
struct dsl_dataset;
struct dsl_pool;
struct dmu_tx;

enum scrub_func {
	SCRUB_FUNC_NONE,
	SCRUB_FUNC_CLEAN,
	SCRUB_FUNC_NUMFUNCS
};

/* These macros are for indexing into the zfs_all_blkstats_t. */
#define	DMU_OT_DEFERRED	DMU_OT_NONE
#define	DMU_OT_TOTAL	DMU_OT_NUMTYPES

typedef struct zfs_blkstat {
	uint64_t	zb_count;
	uint64_t	zb_asize;
	uint64_t	zb_lsize;
	uint64_t	zb_psize;
	uint64_t	zb_gangs;
	uint64_t	zb_ditto_2_of_2_samevdev;
	uint64_t	zb_ditto_2_of_3_samevdev;
	uint64_t	zb_ditto_3_of_3_samevdev;
} zfs_blkstat_t;

typedef struct zfs_all_blkstats {
	zfs_blkstat_t	zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
} zfs_all_blkstats_t;


typedef struct dsl_pool {
	/* Immutable */
	spa_t *dp_spa;
	struct objset *dp_meta_objset;
	struct dsl_dir *dp_root_dir;
	struct dsl_dir *dp_mos_dir;
	struct dsl_dataset *dp_origin_snap;
	uint64_t dp_root_dir_obj;
	struct taskq *dp_vnrele_taskq;

	/* No lock needed - sync context only */
	blkptr_t dp_meta_rootbp;
	list_t dp_synced_datasets;
	hrtime_t dp_read_overhead;
	uint64_t dp_throughput;
	uint64_t dp_write_limit;

	/* Uses dp_lock */
	kmutex_t dp_lock;
	uint64_t dp_space_towrite[TXG_SIZE];
	uint64_t dp_tempreserved[TXG_SIZE];

	enum scrub_func dp_scrub_func;
	uint64_t dp_scrub_queue_obj;
	uint64_t dp_scrub_min_txg;
	uint64_t dp_scrub_max_txg;
	zbookmark_t dp_scrub_bookmark;
	boolean_t dp_scrub_pausing;
	boolean_t dp_scrub_isresilver;
	uint64_t dp_scrub_start_time;
	kmutex_t dp_scrub_cancel_lock; /* protects dp_scrub_restart */
	boolean_t dp_scrub_restart;

	/* Has its own locking */
	tx_state_t dp_tx;
	txg_list_t dp_dirty_datasets;
	txg_list_t dp_dirty_dirs;
	txg_list_t dp_sync_tasks;

	/*
	 * Protects administrative changes (properties, namespace)
	 * It is only held for write in syncing context.  Therefore
	 * syncing context does not need to ever have it for read, since
	 * nobody else could possibly have it for write.
	 */
	krwlock_t dp_config_rwlock;

	zfs_all_blkstats_t *dp_blkstats;
} dsl_pool_t;

int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
void dsl_pool_close(dsl_pool_t *dp);
dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);
void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
void dsl_pool_zil_clean(dsl_pool_t *dp);
int dsl_pool_sync_context(dsl_pool_t *dp);
uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx);
void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
void dsl_pool_memory_pressure(dsl_pool_t *dp);
void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
int dsl_free(zio_t *pio, dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp,
    zio_done_func_t *done, void *private, uint32_t arc_flags);
void dsl_pool_ds_destroyed(struct dsl_dataset *ds, struct dmu_tx *tx);
void dsl_pool_ds_snapshotted(struct dsl_dataset *ds, struct dmu_tx *tx);
void dsl_pool_ds_clone_swapped(struct dsl_dataset *ds1, struct dsl_dataset *ds2,
    struct dmu_tx *tx);
void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);

int dsl_pool_scrub_cancel(dsl_pool_t *dp);
int dsl_pool_scrub_clean(dsl_pool_t *dp);
void dsl_pool_scrub_sync(dsl_pool_t *dp, dmu_tx_t *tx);
void dsl_pool_scrub_restart(dsl_pool_t *dp);

taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp);

#ifdef	__cplusplus
}
#endif

#endif /* _SYS_DSL_POOL_H */
Commit	Line	Data
34dc7c2f BB	1	/*
	2	* CDDL HEADER START
	3	*
	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.
	7	*
	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.
	12	*
	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]
	18	*
	19	* CDDL HEADER END
	20	*/
	21	/*
9babb374	22	* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
34dc7c2f BB	23	* Use is subject to license terms.
	24	*/
	25
	26	#ifndef _SYS_DSL_POOL_H
	27	#define _SYS_DSL_POOL_H
	28
34dc7c2f BB	29	#include <sys/spa.h>
	30	#include <sys/txg.h>
	31	#include <sys/txg_impl.h>
	32	#include <sys/zfs_context.h>
b128c09f BB	33	#include <sys/zio.h>
b128c09f BB	34	#include <sys/dnode.h>
34dc7c2f BB	35
	36	#ifdef __cplusplus
	37	extern "C" {
	38	#endif
	39
	40	struct objset;
	41	struct dsl_dir;
b128c09f BB	42	struct dsl_dataset;
	43	struct dsl_pool;
	44	struct dmu_tx;
	45
	46	enum scrub_func {
	47	SCRUB_FUNC_NONE,
	48	SCRUB_FUNC_CLEAN,
	49	SCRUB_FUNC_NUMFUNCS
	50	};
	51
	52	/* These macros are for indexing into the zfs_all_blkstats_t. */
	53	#define DMU_OT_DEFERRED DMU_OT_NONE
	54	#define DMU_OT_TOTAL DMU_OT_NUMTYPES
	55
	56	typedef struct zfs_blkstat {
	57	uint64_t zb_count;
	58	uint64_t zb_asize;
	59	uint64_t zb_lsize;
	60	uint64_t zb_psize;
	61	uint64_t zb_gangs;
	62	uint64_t zb_ditto_2_of_2_samevdev;
	63	uint64_t zb_ditto_2_of_3_samevdev;
	64	uint64_t zb_ditto_3_of_3_samevdev;
	65	} zfs_blkstat_t;
	66
	67	typedef struct zfs_all_blkstats {
	68	zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
	69	} zfs_all_blkstats_t;
	70
34dc7c2f BB	71
	72	typedef struct dsl_pool {
	73	/* Immutable */
	74	spa_t *dp_spa;
	75	struct objset *dp_meta_objset;
	76	struct dsl_dir *dp_root_dir;
	77	struct dsl_dir *dp_mos_dir;
b128c09f	78	struct dsl_dataset *dp_origin_snap;
34dc7c2f	79	uint64_t dp_root_dir_obj;
9babb374	80	struct taskq *dp_vnrele_taskq;
34dc7c2f BB	81
	82	/* No lock needed - sync context only */
	83	blkptr_t dp_meta_rootbp;
	84	list_t dp_synced_datasets;
b128c09f BB	85	hrtime_t dp_read_overhead;
b128c09f BB	86	uint64_t dp_throughput;
34dc7c2f BB	87	uint64_t dp_write_limit;
	88
	89	/* Uses dp_lock */
	90	kmutex_t dp_lock;
	91	uint64_t dp_space_towrite[TXG_SIZE];
	92	uint64_t dp_tempreserved[TXG_SIZE];
	93
b128c09f BB	94	enum scrub_func dp_scrub_func;
	95	uint64_t dp_scrub_queue_obj;
	96	uint64_t dp_scrub_min_txg;
	97	uint64_t dp_scrub_max_txg;
	98	zbookmark_t dp_scrub_bookmark;
	99	boolean_t dp_scrub_pausing;
	100	boolean_t dp_scrub_isresilver;
	101	uint64_t dp_scrub_start_time;
	102	kmutex_t dp_scrub_cancel_lock; /* protects dp_scrub_restart */
	103	boolean_t dp_scrub_restart;
	104
34dc7c2f BB	105	/* Has its own locking */
	106	tx_state_t dp_tx;
	107	txg_list_t dp_dirty_datasets;
	108	txg_list_t dp_dirty_dirs;
	109	txg_list_t dp_sync_tasks;
	110
	111	/*
	112	* Protects administrative changes (properties, namespace)
	113	* It is only held for write in syncing context. Therefore
	114	* syncing context does not need to ever have it for read, since
	115	* nobody else could possibly have it for write.
	116	*/
	117	krwlock_t dp_config_rwlock;
b128c09f BB	118
b128c09f BB	119	zfs_all_blkstats_t *dp_blkstats;
34dc7c2f BB	120	} dsl_pool_t;
	121
	122	int dsl_pool_open(spa_t spa, uint64_t txg, dsl_pool_t *dpp);
	123	void dsl_pool_close(dsl_pool_t *dp);
b128c09f	124	dsl_pool_t dsl_pool_create(spa_t spa, nvlist_t *zplprops, uint64_t txg);
34dc7c2f BB	125	void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
	126	void dsl_pool_zil_clean(dsl_pool_t *dp);
	127	int dsl_pool_sync_context(dsl_pool_t *dp);
	128	uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
	129	int dsl_pool_tempreserve_space(dsl_pool_t dp, uint64_t space, dmu_tx_t tx);
	130	void dsl_pool_tempreserve_clear(dsl_pool_t dp, int64_t space, dmu_tx_t tx);
	131	void dsl_pool_memory_pressure(dsl_pool_t *dp);
	132	void dsl_pool_willuse_space(dsl_pool_t dp, int64_t space, dmu_tx_t tx);
b128c09f BB	133	int dsl_free(zio_t pio, dsl_pool_t dp, uint64_t txg, const blkptr_t *bpp,
	134	zio_done_func_t done, void private, uint32_t arc_flags);
	135	void dsl_pool_ds_destroyed(struct dsl_dataset ds, struct dmu_tx tx);
	136	void dsl_pool_ds_snapshotted(struct dsl_dataset ds, struct dmu_tx tx);
	137	void dsl_pool_ds_clone_swapped(struct dsl_dataset ds1, struct dsl_dataset ds2,
	138	struct dmu_tx *tx);
	139	void dsl_pool_create_origin(dsl_pool_t dp, dmu_tx_t tx);
	140	void dsl_pool_upgrade_clones(dsl_pool_t dp, dmu_tx_t tx);
	141
	142	int dsl_pool_scrub_cancel(dsl_pool_t *dp);
	143	int dsl_pool_scrub_clean(dsl_pool_t *dp);
	144	void dsl_pool_scrub_sync(dsl_pool_t dp, dmu_tx_t tx);
	145	void dsl_pool_scrub_restart(dsl_pool_t *dp);
34dc7c2f	146
9babb374 BB	147	taskq_t dsl_pool_vnrele_taskq(dsl_pool_t dp);
9babb374 BB	148
34dc7c2f BB	149	#ifdef __cplusplus
	150	}
	151	#endif
	152
	153	#endif /* _SYS_DSL_POOL_H */