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.
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.
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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2013, 2017 by Delphix. All rights reserved.
24 * Copyright 2016 Nexenta Systems, Inc. All rights reserved.
27 #ifndef _SYS_DSL_POOL_H
28 #define _SYS_DSL_POOL_H
32 #include <sys/txg_impl.h>
33 #include <sys/zfs_context.h>
35 #include <sys/dnode.h>
38 #include <sys/bpobj.h>
39 #include <sys/bptree.h>
40 #include <sys/rrwlock.h>
53 extern uint64_t zfs_dirty_data_max
;
54 extern uint64_t zfs_dirty_data_max_max
;
55 extern uint64_t zfs_dirty_data_sync
;
56 extern int zfs_dirty_data_max_percent
;
57 extern int zfs_delay_min_dirty_percent
;
58 extern uint64_t zfs_delay_scale
;
60 /* These macros are for indexing into the zfs_all_blkstats_t. */
61 #define DMU_OT_DEFERRED DMU_OT_NONE
62 #define DMU_OT_OTHER DMU_OT_NUMTYPES /* place holder for DMU_OT() types */
63 #define DMU_OT_TOTAL (DMU_OT_NUMTYPES + 1)
65 typedef struct zfs_blkstat
{
71 uint64_t zb_ditto_2_of_2_samevdev
;
72 uint64_t zb_ditto_2_of_3_samevdev
;
73 uint64_t zb_ditto_3_of_3_samevdev
;
76 typedef struct zfs_all_blkstats
{
77 zfs_blkstat_t zab_type
[DN_MAX_LEVELS
+ 1][DMU_OT_TOTAL
+ 1];
81 typedef struct dsl_pool
{
84 struct objset
*dp_meta_objset
;
85 struct dsl_dir
*dp_root_dir
;
86 struct dsl_dir
*dp_mos_dir
;
87 struct dsl_dir
*dp_free_dir
;
88 struct dsl_dir
*dp_leak_dir
;
89 struct dsl_dataset
*dp_origin_snap
;
90 uint64_t dp_root_dir_obj
;
91 struct taskq
*dp_vnrele_taskq
;
93 /* No lock needed - sync context only */
94 blkptr_t dp_meta_rootbp
;
95 uint64_t dp_tmp_userrefs_obj
;
96 bpobj_t dp_free_bpobj
;
97 uint64_t dp_bptree_obj
;
98 uint64_t dp_empty_bpobj
;
100 struct dsl_scan
*dp_scan
;
104 kcondvar_t dp_spaceavail_cv
;
105 uint64_t dp_dirty_pertxg
[TXG_SIZE
];
106 uint64_t dp_dirty_total
;
107 uint64_t dp_long_free_dirty_pertxg
[TXG_SIZE
];
108 uint64_t dp_mos_used_delta
;
109 uint64_t dp_mos_compressed_delta
;
110 uint64_t dp_mos_uncompressed_delta
;
113 * Time of most recently scheduled (furthest in the future)
114 * wakeup for delayed transactions.
116 hrtime_t dp_last_wakeup
;
118 /* Has its own locking */
120 txg_list_t dp_dirty_datasets
;
121 txg_list_t dp_dirty_zilogs
;
122 txg_list_t dp_dirty_dirs
;
123 txg_list_t dp_sync_tasks
;
124 taskq_t
*dp_sync_taskq
;
125 taskq_t
*dp_zil_clean_taskq
;
126 txg_list_t dp_early_sync_tasks
;
129 * Protects administrative changes (properties, namespace)
131 * It is only held for write in syncing context. Therefore
132 * syncing context does not need to ever have it for read, since
133 * nobody else could possibly have it for write.
135 rrwlock_t dp_config_rwlock
;
137 zfs_all_blkstats_t
*dp_blkstats
;
140 int dsl_pool_init(spa_t
*spa
, uint64_t txg
, dsl_pool_t
**dpp
);
141 int dsl_pool_open(dsl_pool_t
*dp
);
142 void dsl_pool_close(dsl_pool_t
*dp
);
143 dsl_pool_t
*dsl_pool_create(spa_t
*spa
, nvlist_t
*zplprops
, uint64_t txg
);
144 void dsl_pool_sync(dsl_pool_t
*dp
, uint64_t txg
);
145 void dsl_pool_sync_done(dsl_pool_t
*dp
, uint64_t txg
);
146 int dsl_pool_sync_context(dsl_pool_t
*dp
);
147 uint64_t dsl_pool_adjustedsize(dsl_pool_t
*dp
, boolean_t netfree
);
148 uint64_t dsl_pool_adjustedfree(dsl_pool_t
*dp
, boolean_t netfree
);
149 void dsl_pool_dirty_space(dsl_pool_t
*dp
, int64_t space
, dmu_tx_t
*tx
);
150 void dsl_pool_undirty_space(dsl_pool_t
*dp
, int64_t space
, uint64_t txg
);
151 void dsl_free(dsl_pool_t
*dp
, uint64_t txg
, const blkptr_t
*bpp
);
152 void dsl_free_sync(zio_t
*pio
, dsl_pool_t
*dp
, uint64_t txg
,
153 const blkptr_t
*bpp
);
154 void dsl_pool_create_origin(dsl_pool_t
*dp
, dmu_tx_t
*tx
);
155 void dsl_pool_upgrade_clones(dsl_pool_t
*dp
, dmu_tx_t
*tx
);
156 void dsl_pool_upgrade_dir_clones(dsl_pool_t
*dp
, dmu_tx_t
*tx
);
157 void dsl_pool_mos_diduse_space(dsl_pool_t
*dp
,
158 int64_t used
, int64_t comp
, int64_t uncomp
);
159 void dsl_pool_config_enter(dsl_pool_t
*dp
, void *tag
);
160 void dsl_pool_config_enter_prio(dsl_pool_t
*dp
, void *tag
);
161 void dsl_pool_config_exit(dsl_pool_t
*dp
, void *tag
);
162 boolean_t
dsl_pool_config_held(dsl_pool_t
*dp
);
163 boolean_t
dsl_pool_config_held_writer(dsl_pool_t
*dp
);
164 boolean_t
dsl_pool_need_dirty_delay(dsl_pool_t
*dp
);
166 taskq_t
*dsl_pool_vnrele_taskq(dsl_pool_t
*dp
);
168 int dsl_pool_user_hold(dsl_pool_t
*dp
, uint64_t dsobj
,
169 const char *tag
, uint64_t now
, dmu_tx_t
*tx
);
170 int dsl_pool_user_release(dsl_pool_t
*dp
, uint64_t dsobj
,
171 const char *tag
, dmu_tx_t
*tx
);
172 void dsl_pool_clean_tmp_userrefs(dsl_pool_t
*dp
);
173 int dsl_pool_open_special_dir(dsl_pool_t
*dp
, const char *name
, dsl_dir_t
**);
174 int dsl_pool_hold(const char *name
, void *tag
, dsl_pool_t
**dp
);
175 void dsl_pool_rele(dsl_pool_t
*dp
, void *tag
);
181 #endif /* _SYS_DSL_POOL_H */