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>
46 extern int zfs_txg_synctime_ms
;
55 extern unsigned long zfs_dirty_data_max
;
56 extern unsigned long zfs_dirty_data_max_max
;
57 extern unsigned long zfs_dirty_data_sync
;
58 extern int zfs_dirty_data_max_percent
;
59 extern int zfs_dirty_data_max_max_percent
;
60 extern int zfs_delay_min_dirty_percent
;
61 extern unsigned long zfs_delay_scale
;
63 /* These macros are for indexing into the zfs_all_blkstats_t. */
64 #define DMU_OT_DEFERRED DMU_OT_NONE
65 #define DMU_OT_OTHER DMU_OT_NUMTYPES /* place holder for DMU_OT() types */
66 #define DMU_OT_TOTAL (DMU_OT_NUMTYPES + 1)
68 typedef struct zfs_blkstat
{
74 uint64_t zb_ditto_2_of_2_samevdev
;
75 uint64_t zb_ditto_2_of_3_samevdev
;
76 uint64_t zb_ditto_3_of_3_samevdev
;
79 typedef struct zfs_all_blkstats
{
80 zfs_blkstat_t zab_type
[DN_MAX_LEVELS
+ 1][DMU_OT_TOTAL
+ 1];
84 typedef struct dsl_pool
{
87 struct objset
*dp_meta_objset
;
88 struct dsl_dir
*dp_root_dir
;
89 struct dsl_dir
*dp_mos_dir
;
90 struct dsl_dir
*dp_free_dir
;
91 struct dsl_dir
*dp_leak_dir
;
92 struct dsl_dataset
*dp_origin_snap
;
93 uint64_t dp_root_dir_obj
;
94 struct taskq
*dp_iput_taskq
;
96 /* No lock needed - sync context only */
97 blkptr_t dp_meta_rootbp
;
98 uint64_t dp_tmp_userrefs_obj
;
99 bpobj_t dp_free_bpobj
;
100 uint64_t dp_bptree_obj
;
101 uint64_t dp_empty_bpobj
;
103 struct dsl_scan
*dp_scan
;
107 kcondvar_t dp_spaceavail_cv
;
108 uint64_t dp_dirty_pertxg
[TXG_SIZE
];
109 uint64_t dp_dirty_total
;
110 uint64_t dp_long_free_dirty_pertxg
[TXG_SIZE
];
111 uint64_t dp_mos_used_delta
;
112 uint64_t dp_mos_compressed_delta
;
113 uint64_t dp_mos_uncompressed_delta
;
116 * Time of most recently scheduled (furthest in the future)
117 * wakeup for delayed transactions.
119 hrtime_t dp_last_wakeup
;
121 /* Has its own locking */
123 txg_list_t dp_dirty_datasets
;
124 txg_list_t dp_dirty_zilogs
;
125 txg_list_t dp_dirty_dirs
;
126 txg_list_t dp_sync_tasks
;
127 taskq_t
*dp_sync_taskq
;
130 * Protects administrative changes (properties, namespace)
132 * It is only held for write in syncing context. Therefore
133 * syncing context does not need to ever have it for read, since
134 * nobody else could possibly have it for write.
136 rrwlock_t dp_config_rwlock
;
138 zfs_all_blkstats_t
*dp_blkstats
;
141 int dsl_pool_init(spa_t
*spa
, uint64_t txg
, dsl_pool_t
**dpp
);
142 int dsl_pool_open(dsl_pool_t
*dp
);
143 void dsl_pool_close(dsl_pool_t
*dp
);
144 dsl_pool_t
*dsl_pool_create(spa_t
*spa
, nvlist_t
*zplprops
, uint64_t txg
);
145 void dsl_pool_sync(dsl_pool_t
*dp
, uint64_t txg
);
146 void dsl_pool_sync_done(dsl_pool_t
*dp
, uint64_t txg
);
147 int dsl_pool_sync_context(dsl_pool_t
*dp
);
148 uint64_t dsl_pool_adjustedsize(dsl_pool_t
*dp
, boolean_t netfree
);
149 uint64_t dsl_pool_adjustedfree(dsl_pool_t
*dp
, boolean_t netfree
);
150 void dsl_pool_dirty_space(dsl_pool_t
*dp
, int64_t space
, dmu_tx_t
*tx
);
151 void dsl_pool_undirty_space(dsl_pool_t
*dp
, int64_t space
, uint64_t txg
);
152 void dsl_free(dsl_pool_t
*dp
, uint64_t txg
, const blkptr_t
*bpp
);
153 void dsl_free_sync(zio_t
*pio
, dsl_pool_t
*dp
, uint64_t txg
,
154 const blkptr_t
*bpp
);
155 void dsl_pool_create_origin(dsl_pool_t
*dp
, dmu_tx_t
*tx
);
156 void dsl_pool_upgrade_clones(dsl_pool_t
*dp
, dmu_tx_t
*tx
);
157 void dsl_pool_upgrade_dir_clones(dsl_pool_t
*dp
, dmu_tx_t
*tx
);
158 void dsl_pool_mos_diduse_space(dsl_pool_t
*dp
,
159 int64_t used
, int64_t comp
, int64_t uncomp
);
160 boolean_t
dsl_pool_need_dirty_delay(dsl_pool_t
*dp
);
161 void dsl_pool_config_enter(dsl_pool_t
*dp
, void *tag
);
162 void dsl_pool_config_enter_prio(dsl_pool_t
*dp
, void *tag
);
163 void dsl_pool_config_exit(dsl_pool_t
*dp
, void *tag
);
164 boolean_t
dsl_pool_config_held(dsl_pool_t
*dp
);
165 boolean_t
dsl_pool_config_held_writer(dsl_pool_t
*dp
);
167 taskq_t
*dsl_pool_iput_taskq(dsl_pool_t
*dp
);
169 int dsl_pool_user_hold(dsl_pool_t
*dp
, uint64_t dsobj
,
170 const char *tag
, uint64_t now
, dmu_tx_t
*tx
);
171 int dsl_pool_user_release(dsl_pool_t
*dp
, uint64_t dsobj
,
172 const char *tag
, dmu_tx_t
*tx
);
173 void dsl_pool_clean_tmp_userrefs(dsl_pool_t
*dp
);
174 int dsl_pool_open_special_dir(dsl_pool_t
*dp
, const char *name
, dsl_dir_t
**);
175 int dsl_pool_hold(const char *name
, void *tag
, dsl_pool_t
**dp
);
176 void dsl_pool_rele(dsl_pool_t
*dp
, void *tag
);
182 #endif /* _SYS_DSL_POOL_H */