xref: /illumos-gate/usr/src/uts/common/fs/zfs/sys/dsl_pool.h (revision 3f9d6ad7)
1fa9e4066Sahrens /*
2fa9e4066Sahrens  * CDDL HEADER START
3fa9e4066Sahrens  *
4fa9e4066Sahrens  * The contents of this file are subject to the terms of the
5ea8dc4b6Seschrock  * Common Development and Distribution License (the "License").
6ea8dc4b6Seschrock  * You may not use this file except in compliance with the License.
7fa9e4066Sahrens  *
8fa9e4066Sahrens  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9fa9e4066Sahrens  * or http://www.opensolaris.org/os/licensing.
10fa9e4066Sahrens  * See the License for the specific language governing permissions
11fa9e4066Sahrens  * and limitations under the License.
12fa9e4066Sahrens  *
13fa9e4066Sahrens  * When distributing Covered Code, include this CDDL HEADER in each
14fa9e4066Sahrens  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15fa9e4066Sahrens  * If applicable, add the following below this CDDL HEADER, with the
16fa9e4066Sahrens  * fields enclosed by brackets "[]" replaced with your own identifying
17fa9e4066Sahrens  * information: Portions Copyright [yyyy] [name of copyright owner]
18fa9e4066Sahrens  *
19fa9e4066Sahrens  * CDDL HEADER END
20fa9e4066Sahrens  */
21fa9e4066Sahrens /*
223113f7ceSGeorge Wilson  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23fa9e4066Sahrens  */
24fa9e4066Sahrens 
25fa9e4066Sahrens #ifndef	_SYS_DSL_POOL_H
26fa9e4066Sahrens #define	_SYS_DSL_POOL_H
27fa9e4066Sahrens 
28fa9e4066Sahrens #include <sys/spa.h>
29fa9e4066Sahrens #include <sys/txg.h>
30fa9e4066Sahrens #include <sys/txg_impl.h>
31fa9e4066Sahrens #include <sys/zfs_context.h>
32088f3894Sahrens #include <sys/zio.h>
3388b7b0f2SMatthew Ahrens #include <sys/dnode.h>
34bbfd46c4SJeff Bonwick #include <sys/ddt.h>
35*3f9d6ad7SLin Ling #include <sys/arc.h>
36fa9e4066Sahrens 
37fa9e4066Sahrens #ifdef	__cplusplus
38fa9e4066Sahrens extern "C" {
39fa9e4066Sahrens #endif
40fa9e4066Sahrens 
41fa9e4066Sahrens struct objset;
42fa9e4066Sahrens struct dsl_dir;
43088f3894Sahrens struct dsl_dataset;
44088f3894Sahrens struct dsl_pool;
45088f3894Sahrens struct dmu_tx;
46*3f9d6ad7SLin Ling struct dsl_scan;
47088f3894Sahrens 
4888b7b0f2SMatthew Ahrens /* These macros are for indexing into the zfs_all_blkstats_t. */
4988b7b0f2SMatthew Ahrens #define	DMU_OT_DEFERRED	DMU_OT_NONE
5088b7b0f2SMatthew Ahrens #define	DMU_OT_TOTAL	DMU_OT_NUMTYPES
5188b7b0f2SMatthew Ahrens 
5288b7b0f2SMatthew Ahrens typedef struct zfs_blkstat {
5388b7b0f2SMatthew Ahrens 	uint64_t	zb_count;
5488b7b0f2SMatthew Ahrens 	uint64_t	zb_asize;
5588b7b0f2SMatthew Ahrens 	uint64_t	zb_lsize;
5688b7b0f2SMatthew Ahrens 	uint64_t	zb_psize;
5788b7b0f2SMatthew Ahrens 	uint64_t	zb_gangs;
5888b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_2_of_2_samevdev;
5988b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_2_of_3_samevdev;
6088b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_3_of_3_samevdev;
6188b7b0f2SMatthew Ahrens } zfs_blkstat_t;
6288b7b0f2SMatthew Ahrens 
6388b7b0f2SMatthew Ahrens typedef struct zfs_all_blkstats {
6488b7b0f2SMatthew Ahrens 	zfs_blkstat_t	zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
6588b7b0f2SMatthew Ahrens } zfs_all_blkstats_t;
6688b7b0f2SMatthew Ahrens 
67fa9e4066Sahrens 
68fa9e4066Sahrens typedef struct dsl_pool {
69fa9e4066Sahrens 	/* Immutable */
70fa9e4066Sahrens 	spa_t *dp_spa;
71fa9e4066Sahrens 	struct objset *dp_meta_objset;
72fa9e4066Sahrens 	struct dsl_dir *dp_root_dir;
73fa9e4066Sahrens 	struct dsl_dir *dp_mos_dir;
74088f3894Sahrens 	struct dsl_dataset *dp_origin_snap;
75fa9e4066Sahrens 	uint64_t dp_root_dir_obj;
769d3574bfSNeil Perrin 	struct taskq *dp_vnrele_taskq;
77fa9e4066Sahrens 
78fa9e4066Sahrens 	/* No lock needed - sync context only */
79fa9e4066Sahrens 	blkptr_t dp_meta_rootbp;
803cb34c60Sahrens 	list_t dp_synced_datasets;
8105715f94SMark Maybee 	hrtime_t dp_read_overhead;
82fb5dd802SLin Ling 	uint64_t dp_throughput; /* bytes per millisec */
831ab7f2deSmaybee 	uint64_t dp_write_limit;
84ca45db41SChris Kirby 	uint64_t dp_tmp_userrefs_obj;
851ab7f2deSmaybee 
86*3f9d6ad7SLin Ling 	struct dsl_scan *dp_scan;
87*3f9d6ad7SLin Ling 
881ab7f2deSmaybee 	/* Uses dp_lock */
891ab7f2deSmaybee 	kmutex_t dp_lock;
901ab7f2deSmaybee 	uint64_t dp_space_towrite[TXG_SIZE];
911ab7f2deSmaybee 	uint64_t dp_tempreserved[TXG_SIZE];
92fa9e4066Sahrens 
93fa9e4066Sahrens 	/* Has its own locking */
94fa9e4066Sahrens 	tx_state_t dp_tx;
95fa9e4066Sahrens 	txg_list_t dp_dirty_datasets;
96fa9e4066Sahrens 	txg_list_t dp_dirty_dirs;
971d452cf5Sahrens 	txg_list_t dp_sync_tasks;
98fa9e4066Sahrens 
99fa9e4066Sahrens 	/*
100fa9e4066Sahrens 	 * Protects administrative changes (properties, namespace)
101fa9e4066Sahrens 	 * It is only held for write in syncing context.  Therefore
102fa9e4066Sahrens 	 * syncing context does not need to ever have it for read, since
103fa9e4066Sahrens 	 * nobody else could possibly have it for write.
104fa9e4066Sahrens 	 */
105fa9e4066Sahrens 	krwlock_t dp_config_rwlock;
10688b7b0f2SMatthew Ahrens 
10788b7b0f2SMatthew Ahrens 	zfs_all_blkstats_t *dp_blkstats;
108fa9e4066Sahrens } dsl_pool_t;
109fa9e4066Sahrens 
110ea8dc4b6Seschrock int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
111fa9e4066Sahrens void dsl_pool_close(dsl_pool_t *dp);
1120a48a24eStimh dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);
113fa9e4066Sahrens void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
114b24ab676SJeff Bonwick void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);
115fa9e4066Sahrens int dsl_pool_sync_context(dsl_pool_t *dp);
116fa9e4066Sahrens uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
117468c413aSTim Haley uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree);
1181ab7f2deSmaybee int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx);
1191ab7f2deSmaybee void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
1201ab7f2deSmaybee void dsl_pool_memory_pressure(dsl_pool_t *dp);
1211ab7f2deSmaybee void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
122b24ab676SJeff Bonwick void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);
1233113f7ceSGeorge Wilson void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,
1243113f7ceSGeorge Wilson     const blkptr_t *bpp);
125*3f9d6ad7SLin Ling int dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf,
126*3f9d6ad7SLin Ling     arc_done_func_t *done, void *private, int priority, int zio_flags,
127*3f9d6ad7SLin Ling     uint32_t *arc_flags, const zbookmark_t *zb);
128*3f9d6ad7SLin Ling int dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp,
129*3f9d6ad7SLin Ling     arc_done_func_t *done, void *private, int priority, int zio_flags,
130*3f9d6ad7SLin Ling     uint32_t *arc_flags, const zbookmark_t *zb);
131088f3894Sahrens void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
132088f3894Sahrens void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);
133088f3894Sahrens 
1349d3574bfSNeil Perrin taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp);
1359d3574bfSNeil Perrin 
136ca45db41SChris Kirby extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,
13715508ac0SChris Kirby     const char *tag, uint64_t *now, dmu_tx_t *tx);
138ca45db41SChris Kirby extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,
139ca45db41SChris Kirby     const char *tag, dmu_tx_t *tx);
140ca45db41SChris Kirby extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp);
141*3f9d6ad7SLin Ling int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);
142ca45db41SChris Kirby 
143fa9e4066Sahrens #ifdef	__cplusplus
144fa9e4066Sahrens }
145fa9e4066Sahrens #endif
146fa9e4066Sahrens 
147fa9e4066Sahrens #endif /* _SYS_DSL_POOL_H */
148