xref: /illumos-gate/usr/src/uts/common/fs/zfs/sys/dsl_pool.h (revision 69962b5647e4a8b9b14998733b765925381b727e)
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.
23*69962b56SMatthew Ahrens  * Copyright (c) 2013 by Delphix. All rights reserved.
24fa9e4066Sahrens  */
25fa9e4066Sahrens 
26fa9e4066Sahrens #ifndef	_SYS_DSL_POOL_H
27fa9e4066Sahrens #define	_SYS_DSL_POOL_H
28fa9e4066Sahrens 
29fa9e4066Sahrens #include <sys/spa.h>
30fa9e4066Sahrens #include <sys/txg.h>
31fa9e4066Sahrens #include <sys/txg_impl.h>
32fa9e4066Sahrens #include <sys/zfs_context.h>
33088f3894Sahrens #include <sys/zio.h>
3488b7b0f2SMatthew Ahrens #include <sys/dnode.h>
35bbfd46c4SJeff Bonwick #include <sys/ddt.h>
363f9d6ad7SLin Ling #include <sys/arc.h>
37cde58dbcSMatthew Ahrens #include <sys/bpobj.h>
38ad135b5dSChristopher Siden #include <sys/bptree.h>
393b2aab18SMatthew Ahrens #include <sys/rrwlock.h>
40fa9e4066Sahrens 
41fa9e4066Sahrens #ifdef	__cplusplus
42fa9e4066Sahrens extern "C" {
43fa9e4066Sahrens #endif
44fa9e4066Sahrens 
45fa9e4066Sahrens struct objset;
46fa9e4066Sahrens struct dsl_dir;
47088f3894Sahrens struct dsl_dataset;
48088f3894Sahrens struct dsl_pool;
49088f3894Sahrens struct dmu_tx;
503f9d6ad7SLin Ling struct dsl_scan;
51088f3894Sahrens 
52*69962b56SMatthew Ahrens extern uint64_t zfs_dirty_data_max;
53*69962b56SMatthew Ahrens extern uint64_t zfs_dirty_data_max_max;
54*69962b56SMatthew Ahrens extern uint64_t zfs_dirty_data_sync;
55*69962b56SMatthew Ahrens extern int zfs_dirty_data_max_percent;
56*69962b56SMatthew Ahrens extern int zfs_delay_min_dirty_percent;
57*69962b56SMatthew Ahrens extern uint64_t zfs_delay_scale;
58*69962b56SMatthew Ahrens 
5988b7b0f2SMatthew Ahrens /* These macros are for indexing into the zfs_all_blkstats_t. */
6088b7b0f2SMatthew Ahrens #define	DMU_OT_DEFERRED	DMU_OT_NONE
61ad135b5dSChristopher Siden #define	DMU_OT_OTHER	DMU_OT_NUMTYPES /* place holder for DMU_OT() types */
62ad135b5dSChristopher Siden #define	DMU_OT_TOTAL	(DMU_OT_NUMTYPES + 1)
6388b7b0f2SMatthew Ahrens 
6488b7b0f2SMatthew Ahrens typedef struct zfs_blkstat {
6588b7b0f2SMatthew Ahrens 	uint64_t	zb_count;
6688b7b0f2SMatthew Ahrens 	uint64_t	zb_asize;
6788b7b0f2SMatthew Ahrens 	uint64_t	zb_lsize;
6888b7b0f2SMatthew Ahrens 	uint64_t	zb_psize;
6988b7b0f2SMatthew Ahrens 	uint64_t	zb_gangs;
7088b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_2_of_2_samevdev;
7188b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_2_of_3_samevdev;
7288b7b0f2SMatthew Ahrens 	uint64_t	zb_ditto_3_of_3_samevdev;
7388b7b0f2SMatthew Ahrens } zfs_blkstat_t;
7488b7b0f2SMatthew Ahrens 
7588b7b0f2SMatthew Ahrens typedef struct zfs_all_blkstats {
7688b7b0f2SMatthew Ahrens 	zfs_blkstat_t	zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
7788b7b0f2SMatthew Ahrens } zfs_all_blkstats_t;
7888b7b0f2SMatthew Ahrens 
79fa9e4066Sahrens 
80fa9e4066Sahrens typedef struct dsl_pool {
81fa9e4066Sahrens 	/* Immutable */
82fa9e4066Sahrens 	spa_t *dp_spa;
83fa9e4066Sahrens 	struct objset *dp_meta_objset;
84fa9e4066Sahrens 	struct dsl_dir *dp_root_dir;
85fa9e4066Sahrens 	struct dsl_dir *dp_mos_dir;
86cde58dbcSMatthew Ahrens 	struct dsl_dir *dp_free_dir;
87088f3894Sahrens 	struct dsl_dataset *dp_origin_snap;
88fa9e4066Sahrens 	uint64_t dp_root_dir_obj;
899d3574bfSNeil Perrin 	struct taskq *dp_vnrele_taskq;
90fa9e4066Sahrens 
91fa9e4066Sahrens 	/* No lock needed - sync context only */
92fa9e4066Sahrens 	blkptr_t dp_meta_rootbp;
93ca45db41SChris Kirby 	uint64_t dp_tmp_userrefs_obj;
94cde58dbcSMatthew Ahrens 	bpobj_t dp_free_bpobj;
95ad135b5dSChristopher Siden 	uint64_t dp_bptree_obj;
96f1745736SMatthew Ahrens 	uint64_t dp_empty_bpobj;
971ab7f2deSmaybee 
983f9d6ad7SLin Ling 	struct dsl_scan *dp_scan;
993f9d6ad7SLin Ling 
1001ab7f2deSmaybee 	/* Uses dp_lock */
1011ab7f2deSmaybee 	kmutex_t dp_lock;
102*69962b56SMatthew Ahrens 	kcondvar_t dp_spaceavail_cv;
103*69962b56SMatthew Ahrens 	uint64_t dp_dirty_pertxg[TXG_SIZE];
104*69962b56SMatthew Ahrens 	uint64_t dp_dirty_total;
105ce636f8bSMatthew Ahrens 	uint64_t dp_mos_used_delta;
106ce636f8bSMatthew Ahrens 	uint64_t dp_mos_compressed_delta;
107ce636f8bSMatthew Ahrens 	uint64_t dp_mos_uncompressed_delta;
108fa9e4066Sahrens 
109*69962b56SMatthew Ahrens 	/*
110*69962b56SMatthew Ahrens 	 * Time of most recently scheduled (furthest in the future)
111*69962b56SMatthew Ahrens 	 * wakeup for delayed transactions.
112*69962b56SMatthew Ahrens 	 */
113*69962b56SMatthew Ahrens 	hrtime_t dp_last_wakeup;
114*69962b56SMatthew Ahrens 
115fa9e4066Sahrens 	/* Has its own locking */
116fa9e4066Sahrens 	tx_state_t dp_tx;
117fa9e4066Sahrens 	txg_list_t dp_dirty_datasets;
118ce636f8bSMatthew Ahrens 	txg_list_t dp_dirty_zilogs;
119fa9e4066Sahrens 	txg_list_t dp_dirty_dirs;
1201d452cf5Sahrens 	txg_list_t dp_sync_tasks;
121fa9e4066Sahrens 
122fa9e4066Sahrens 	/*
123fa9e4066Sahrens 	 * Protects administrative changes (properties, namespace)
124f7170741SWill Andrews 	 *
125fa9e4066Sahrens 	 * It is only held for write in syncing context.  Therefore
126fa9e4066Sahrens 	 * syncing context does not need to ever have it for read, since
127fa9e4066Sahrens 	 * nobody else could possibly have it for write.
128fa9e4066Sahrens 	 */
1293b2aab18SMatthew Ahrens 	rrwlock_t dp_config_rwlock;
13088b7b0f2SMatthew Ahrens 
13188b7b0f2SMatthew Ahrens 	zfs_all_blkstats_t *dp_blkstats;
132fa9e4066Sahrens } dsl_pool_t;
133fa9e4066Sahrens 
134ad135b5dSChristopher Siden int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
135ad135b5dSChristopher Siden int dsl_pool_open(dsl_pool_t *dp);
136fa9e4066Sahrens void dsl_pool_close(dsl_pool_t *dp);
1370a48a24eStimh dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);
138fa9e4066Sahrens void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
139b24ab676SJeff Bonwick void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);
140fa9e4066Sahrens int dsl_pool_sync_context(dsl_pool_t *dp);
141fa9e4066Sahrens uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
142468c413aSTim Haley uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree);
143*69962b56SMatthew Ahrens void dsl_pool_dirty_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
144*69962b56SMatthew Ahrens void dsl_pool_undirty_space(dsl_pool_t *dp, int64_t space, uint64_t txg);
145b24ab676SJeff Bonwick void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);
1463113f7ceSGeorge Wilson void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,
1473113f7ceSGeorge Wilson     const blkptr_t *bpp);
148088f3894Sahrens void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
149088f3894Sahrens void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);
150cde58dbcSMatthew Ahrens void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx);
151ce636f8bSMatthew Ahrens void dsl_pool_mos_diduse_space(dsl_pool_t *dp,
152ce636f8bSMatthew Ahrens     int64_t used, int64_t comp, int64_t uncomp);
1533b2aab18SMatthew Ahrens void dsl_pool_config_enter(dsl_pool_t *dp, void *tag);
1543b2aab18SMatthew Ahrens void dsl_pool_config_exit(dsl_pool_t *dp, void *tag);
1553b2aab18SMatthew Ahrens boolean_t dsl_pool_config_held(dsl_pool_t *dp);
156*69962b56SMatthew Ahrens boolean_t dsl_pool_need_dirty_delay(dsl_pool_t *dp);
157088f3894Sahrens 
1589d3574bfSNeil Perrin taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp);
1599d3574bfSNeil Perrin 
1603b2aab18SMatthew Ahrens int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,
1613b2aab18SMatthew Ahrens     const char *tag, uint64_t now, dmu_tx_t *tx);
1623b2aab18SMatthew Ahrens int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,
163ca45db41SChris Kirby     const char *tag, dmu_tx_t *tx);
1643b2aab18SMatthew Ahrens void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp);
1653f9d6ad7SLin Ling int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);
1663b2aab18SMatthew Ahrens int dsl_pool_hold(const char *name, void *tag, dsl_pool_t **dp);
1673b2aab18SMatthew Ahrens void dsl_pool_rele(dsl_pool_t *dp, void *tag);
168ca45db41SChris Kirby 
169fa9e4066Sahrens #ifdef	__cplusplus
170fa9e4066Sahrens }
171fa9e4066Sahrens #endif
172fa9e4066Sahrens 
173fa9e4066Sahrens #endif /* _SYS_DSL_POOL_H */
174