xref: /illumos-gate/usr/src/uts/common/fs/zfs/sys/dsl_pool.h (revision c5832a53)
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.
2394c2d0ebSMatthew Ahrens  * Copyright (c) 2013, 2017 by Delphix. All rights reserved.
24ff5177eeSAlek Pinchuk  * Copyright 2016 Nexenta Systems, Inc.  All rights reserved.
25fa9e4066Sahrens  */
26fa9e4066Sahrens 
27fa9e4066Sahrens #ifndef	_SYS_DSL_POOL_H
28fa9e4066Sahrens #define	_SYS_DSL_POOL_H
29fa9e4066Sahrens 
30fa9e4066Sahrens #include <sys/spa.h>
31fa9e4066Sahrens #include <sys/txg.h>
32fa9e4066Sahrens #include <sys/txg_impl.h>
33fa9e4066Sahrens #include <sys/zfs_context.h>
34088f3894Sahrens #include <sys/zio.h>
3588b7b0f2SMatthew Ahrens #include <sys/dnode.h>
36bbfd46c4SJeff Bonwick #include <sys/ddt.h>
373f9d6ad7SLin Ling #include <sys/arc.h>
38cde58dbcSMatthew Ahrens #include <sys/bpobj.h>
39ad135b5dSChristopher Siden #include <sys/bptree.h>
403b2aab18SMatthew Ahrens #include <sys/rrwlock.h>
4186714001SSerapheim Dimitropoulos #include <sys/dsl_synctask.h>
42e0f1c0afSOlaf Faaland #include <sys/mmp.h>
43fa9e4066Sahrens 
44fa9e4066Sahrens #ifdef	__cplusplus
45fa9e4066Sahrens extern "C" {
46fa9e4066Sahrens #endif
47fa9e4066Sahrens 
48fa9e4066Sahrens struct objset;
49fa9e4066Sahrens struct dsl_dir;
50088f3894Sahrens struct dsl_dataset;
51088f3894Sahrens struct dsl_pool;
52088f3894Sahrens struct dmu_tx;
533f9d6ad7SLin Ling struct dsl_scan;
54eb633035STom Caputi struct dsl_crypto_params;
55088f3894Sahrens 
5669962b56SMatthew Ahrens extern uint64_t zfs_dirty_data_max;
5769962b56SMatthew Ahrens extern uint64_t zfs_dirty_data_max_max;
587928f4baSMatthew Ahrens extern uint64_t zfs_dirty_data_sync_pct;
5969962b56SMatthew Ahrens extern int zfs_dirty_data_max_percent;
6069962b56SMatthew Ahrens extern int zfs_delay_min_dirty_percent;
6169962b56SMatthew Ahrens extern uint64_t zfs_delay_scale;
6269962b56SMatthew Ahrens 
6388b7b0f2SMatthew Ahrens /* These macros are for indexing into the zfs_all_blkstats_t. */
6488b7b0f2SMatthew Ahrens #define	DMU_OT_DEFERRED	DMU_OT_NONE
65ad135b5dSChristopher Siden #define	DMU_OT_OTHER	DMU_OT_NUMTYPES /* place holder for DMU_OT() types */
66ad135b5dSChristopher Siden #define	DMU_OT_TOTAL	(DMU_OT_NUMTYPES + 1)
6788b7b0f2SMatthew Ahrens 
6888b7b0f2SMatthew Ahrens typedef struct zfs_blkstat {
6988b7b0f2SMatthew Ahrens 	uint64_t	zb_count;
7088b7b0f2SMatthew Ahrens 	uint64_t	zb_asize;
7188b7b0f2SMatthew Ahrens 	uint64_t	zb_lsize;
7288b7b0f2SMatthew Ahrens 	uint64_t	zb_psize;
7388b7b0f2SMatthew Ahrens 	uint64_t	zb_gangs;
7488b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_2_of_2_samevdev;
7588b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_2_of_3_samevdev;
7688b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_3_of_3_samevdev;
7788b7b0f2SMatthew Ahrens } zfs_blkstat_t;
7888b7b0f2SMatthew Ahrens 
7988b7b0f2SMatthew Ahrens typedef struct zfs_all_blkstats {
8088b7b0f2SMatthew Ahrens 	zfs_blkstat_t	zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
81a3874b8bSToomas Soome 	kmutex_t	zab_lock;
8288b7b0f2SMatthew Ahrens } zfs_all_blkstats_t;
8388b7b0f2SMatthew Ahrens 
84fa9e4066Sahrens 
85fa9e4066Sahrens typedef struct dsl_pool {
86fa9e4066Sahrens 	/* Immutable */
87fa9e4066Sahrens 	spa_t *dp_spa;
88fa9e4066Sahrens 	struct objset *dp_meta_objset;
89fa9e4066Sahrens 	struct dsl_dir *dp_root_dir;
90fa9e4066Sahrens 	struct dsl_dir *dp_mos_dir;
91cde58dbcSMatthew Ahrens 	struct dsl_dir *dp_free_dir;
927fd05ac4SMatthew Ahrens 	struct dsl_dir *dp_leak_dir;
93088f3894Sahrens 	struct dsl_dataset *dp_origin_snap;
94fa9e4066Sahrens 	uint64_t dp_root_dir_obj;
95591e0e13SSebastien Roy 	taskq_t *dp_vnrele_taskq;
96*c5832a53SAlek Pinchuk 	struct taskq *dp_unlinked_drain_taskq;
97fa9e4066Sahrens 
98fa9e4066Sahrens 	/* No lock needed - sync context only */
99fa9e4066Sahrens 	blkptr_t dp_meta_rootbp;
100ca45db41SChris Kirby 	uint64_t dp_tmp_userrefs_obj;
101cde58dbcSMatthew Ahrens 	bpobj_t dp_free_bpobj;
102ad135b5dSChristopher Siden 	uint64_t dp_bptree_obj;
103f1745736SMatthew Ahrens 	uint64_t dp_empty_bpobj;
1045cabbc6bSPrashanth Sreenivasa 	bpobj_t dp_obsolete_bpobj;
1051ab7f2deSmaybee 
1063f9d6ad7SLin Ling 	struct dsl_scan *dp_scan;
1073f9d6ad7SLin Ling 
1081ab7f2deSmaybee 	/* Uses dp_lock */
1091ab7f2deSmaybee 	kmutex_t dp_lock;
11069962b56SMatthew Ahrens 	kcondvar_t dp_spaceavail_cv;
11169962b56SMatthew Ahrens 	uint64_t dp_dirty_pertxg[TXG_SIZE];
11269962b56SMatthew Ahrens 	uint64_t dp_dirty_total;
113ff5177eeSAlek Pinchuk 	uint64_t dp_long_free_dirty_pertxg[TXG_SIZE];
114ce636f8bSMatthew Ahrens 	uint64_t dp_mos_used_delta;
115ce636f8bSMatthew Ahrens 	uint64_t dp_mos_compressed_delta;
116ce636f8bSMatthew Ahrens 	uint64_t dp_mos_uncompressed_delta;
117fa9e4066Sahrens 
11869962b56SMatthew Ahrens 	/*
11969962b56SMatthew Ahrens 	 * Time of most recently scheduled (furthest in the future)
12069962b56SMatthew Ahrens 	 * wakeup for delayed transactions.
12169962b56SMatthew Ahrens 	 */
12269962b56SMatthew Ahrens 	hrtime_t dp_last_wakeup;
12369962b56SMatthew Ahrens 
124fa9e4066Sahrens 	/* Has its own locking */
125fa9e4066Sahrens 	tx_state_t dp_tx;
126fa9e4066Sahrens 	txg_list_t dp_dirty_datasets;
127ce636f8bSMatthew Ahrens 	txg_list_t dp_dirty_zilogs;
128fa9e4066Sahrens 	txg_list_t dp_dirty_dirs;
1291d452cf5Sahrens 	txg_list_t dp_sync_tasks;
13086714001SSerapheim Dimitropoulos 	txg_list_t dp_early_sync_tasks;
13194c2d0ebSMatthew Ahrens 	taskq_t *dp_sync_taskq;
132216d7723SPrakash Surya 	taskq_t *dp_zil_clean_taskq;
133fa9e4066Sahrens 
134fa9e4066Sahrens 	/*
135fa9e4066Sahrens 	 * Protects administrative changes (properties, namespace)
136f7170741SWill Andrews 	 *
137fa9e4066Sahrens 	 * It is only held for write in syncing context.  Therefore
138fa9e4066Sahrens 	 * syncing context does not need to ever have it for read, since
139fa9e4066Sahrens 	 * nobody else could possibly have it for write.
140fa9e4066Sahrens 	 */
1413b2aab18SMatthew Ahrens 	rrwlock_t dp_config_rwlock;
14288b7b0f2SMatthew Ahrens 
14388b7b0f2SMatthew Ahrens 	zfs_all_blkstats_t *dp_blkstats;
144fa9e4066Sahrens } dsl_pool_t;
145fa9e4066Sahrens 
146ad135b5dSChristopher Siden int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
147ad135b5dSChristopher Siden int dsl_pool_open(dsl_pool_t *dp);
148fa9e4066Sahrens void dsl_pool_close(dsl_pool_t *dp);
149eb633035STom Caputi dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops,
150eb633035STom Caputi     struct dsl_crypto_params *dcp, uint64_t txg);
151fa9e4066Sahrens void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
152b24ab676SJeff Bonwick void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);
153fa9e4066Sahrens int dsl_pool_sync_context(dsl_pool_t *dp);
15486714001SSerapheim Dimitropoulos uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, zfs_space_check_t slop_policy);
15586714001SSerapheim Dimitropoulos uint64_t dsl_pool_unreserved_space(dsl_pool_t *dp,
15686714001SSerapheim Dimitropoulos     zfs_space_check_t slop_policy);
15769962b56SMatthew Ahrens void dsl_pool_dirty_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
15869962b56SMatthew Ahrens void dsl_pool_undirty_space(dsl_pool_t *dp, int64_t space, uint64_t txg);
159b24ab676SJeff Bonwick void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);
1603113f7ceSGeorge Wilson void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,
1613113f7ceSGeorge Wilson     const blkptr_t *bpp);
162088f3894Sahrens void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
163088f3894Sahrens void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);
164cde58dbcSMatthew Ahrens void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx);
165ce636f8bSMatthew Ahrens void dsl_pool_mos_diduse_space(dsl_pool_t *dp,
166ce636f8bSMatthew Ahrens     int64_t used, int64_t comp, int64_t uncomp);
16786714001SSerapheim Dimitropoulos void dsl_pool_ckpoint_diduse_space(dsl_pool_t *dp,
16886714001SSerapheim Dimitropoulos     int64_t used, int64_t comp, int64_t uncomp);
1693b2aab18SMatthew Ahrens void dsl_pool_config_enter(dsl_pool_t *dp, void *tag);
1701d3f896fSArne Jansen void dsl_pool_config_enter_prio(dsl_pool_t *dp, void *tag);
1713b2aab18SMatthew Ahrens void dsl_pool_config_exit(dsl_pool_t *dp, void *tag);
1723b2aab18SMatthew Ahrens boolean_t dsl_pool_config_held(dsl_pool_t *dp);
17312380e1eSArne Jansen boolean_t dsl_pool_config_held_writer(dsl_pool_t *dp);
17469962b56SMatthew Ahrens boolean_t dsl_pool_need_dirty_delay(dsl_pool_t *dp);
175088f3894Sahrens 
1769d3574bfSNeil Perrin taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp);
177*c5832a53SAlek Pinchuk taskq_t *dsl_pool_unlinked_drain_taskq(dsl_pool_t *dp);
1789d3574bfSNeil Perrin 
1793b2aab18SMatthew Ahrens int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,
1803b2aab18SMatthew Ahrens     const char *tag, uint64_t now, dmu_tx_t *tx);
1813b2aab18SMatthew Ahrens int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,
182ca45db41SChris Kirby     const char *tag, dmu_tx_t *tx);
1833b2aab18SMatthew Ahrens void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp);
1843f9d6ad7SLin Ling int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);
1853b2aab18SMatthew Ahrens int dsl_pool_hold(const char *name, void *tag, dsl_pool_t **dp);
1863b2aab18SMatthew Ahrens void dsl_pool_rele(dsl_pool_t *dp, void *tag);
187ca45db41SChris Kirby 
1885cabbc6bSPrashanth Sreenivasa void dsl_pool_create_obsolete_bpobj(dsl_pool_t *dp, dmu_tx_t *tx);
1895cabbc6bSPrashanth Sreenivasa void dsl_pool_destroy_obsolete_bpobj(dsl_pool_t *dp, dmu_tx_t *tx);
1905cabbc6bSPrashanth Sreenivasa 
191fa9e4066Sahrens #ifdef	__cplusplus
192fa9e4066Sahrens }
193fa9e4066Sahrens #endif
194fa9e4066Sahrens 
195fa9e4066Sahrens #endif /* _SYS_DSL_POOL_H */
196