]> git.proxmox.com Git - mirror_zfs.git/blob - include/sys/dsl_pool.h
Merge branch 'kstat'
[mirror_zfs.git] / include / sys / dsl_pool.h
1 /*
2 * CDDL HEADER START
3 *
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.
7 *
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.
12 *
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]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2012 by Delphix. All rights reserved.
24 */
25
26 #ifndef _SYS_DSL_POOL_H
27 #define _SYS_DSL_POOL_H
28
29 #include <sys/spa.h>
30 #include <sys/txg.h>
31 #include <sys/txg_impl.h>
32 #include <sys/zfs_context.h>
33 #include <sys/zio.h>
34 #include <sys/dnode.h>
35 #include <sys/ddt.h>
36 #include <sys/arc.h>
37 #include <sys/bpobj.h>
38 #include <sys/bptree.h>
39 #include <sys/rrwlock.h>
40
41 #ifdef __cplusplus
42 extern "C" {
43 #endif
44
45 extern int zfs_txg_synctime_ms;
46
47 struct objset;
48 struct dsl_dir;
49 struct dsl_dataset;
50 struct dsl_pool;
51 struct dmu_tx;
52 struct dsl_scan;
53
54 /* These macros are for indexing into the zfs_all_blkstats_t. */
55 #define DMU_OT_DEFERRED DMU_OT_NONE
56 #define DMU_OT_OTHER DMU_OT_NUMTYPES /* place holder for DMU_OT() types */
57 #define DMU_OT_TOTAL (DMU_OT_NUMTYPES + 1)
58
59 typedef struct zfs_blkstat {
60 uint64_t zb_count;
61 uint64_t zb_asize;
62 uint64_t zb_lsize;
63 uint64_t zb_psize;
64 uint64_t zb_gangs;
65 uint64_t zb_ditto_2_of_2_samevdev;
66 uint64_t zb_ditto_2_of_3_samevdev;
67 uint64_t zb_ditto_3_of_3_samevdev;
68 } zfs_blkstat_t;
69
70 typedef struct zfs_all_blkstats {
71 zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
72 } zfs_all_blkstats_t;
73
74
75 typedef struct dsl_pool {
76 /* Immutable */
77 spa_t *dp_spa;
78 struct objset *dp_meta_objset;
79 struct dsl_dir *dp_root_dir;
80 struct dsl_dir *dp_mos_dir;
81 struct dsl_dir *dp_free_dir;
82 struct dsl_dataset *dp_origin_snap;
83 uint64_t dp_root_dir_obj;
84 struct taskq *dp_iput_taskq;
85
86 /* No lock needed - sync context only */
87 blkptr_t dp_meta_rootbp;
88 hrtime_t dp_read_overhead;
89 uint64_t dp_throughput; /* bytes per millisec */
90 uint64_t dp_write_limit;
91 uint64_t dp_tmp_userrefs_obj;
92 bpobj_t dp_free_bpobj;
93 uint64_t dp_bptree_obj;
94 uint64_t dp_empty_bpobj;
95
96 struct dsl_scan *dp_scan;
97
98 /* Uses dp_lock */
99 kmutex_t dp_lock;
100 uint64_t dp_space_towrite[TXG_SIZE];
101 uint64_t dp_tempreserved[TXG_SIZE];
102 uint64_t dp_mos_used_delta;
103 uint64_t dp_mos_compressed_delta;
104 uint64_t dp_mos_uncompressed_delta;
105
106 /* Has its own locking */
107 tx_state_t dp_tx;
108 txg_list_t dp_dirty_datasets;
109 txg_list_t dp_dirty_zilogs;
110 txg_list_t dp_dirty_dirs;
111 txg_list_t dp_sync_tasks;
112
113 /*
114 * Protects administrative changes (properties, namespace)
115 * It is only held for write in syncing context. Therefore
116 * syncing context does not need to ever have it for read, since
117 * nobody else could possibly have it for write.
118 */
119 rrwlock_t dp_config_rwlock;
120
121 zfs_all_blkstats_t *dp_blkstats;
122 } dsl_pool_t;
123
124 int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
125 int dsl_pool_open(dsl_pool_t *dp);
126 void dsl_pool_close(dsl_pool_t *dp);
127 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);
128 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
129 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);
130 int dsl_pool_sync_context(dsl_pool_t *dp);
131 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
132 uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree);
133 int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx);
134 void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
135 void dsl_pool_memory_pressure(dsl_pool_t *dp);
136 void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
137 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);
138 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,
139 const blkptr_t *bpp);
140 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
141 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);
142 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx);
143 void dsl_pool_mos_diduse_space(dsl_pool_t *dp,
144 int64_t used, int64_t comp, int64_t uncomp);
145 void dsl_pool_config_enter(dsl_pool_t *dp, void *tag);
146 void dsl_pool_config_exit(dsl_pool_t *dp, void *tag);
147 boolean_t dsl_pool_config_held(dsl_pool_t *dp);
148
149 taskq_t *dsl_pool_iput_taskq(dsl_pool_t *dp);
150
151 int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,
152 const char *tag, uint64_t now, dmu_tx_t *tx);
153 int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,
154 const char *tag, dmu_tx_t *tx);
155 void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp);
156 int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);
157 int dsl_pool_hold(const char *name, void *tag, dsl_pool_t **dp);
158 void dsl_pool_rele(dsl_pool_t *dp, void *tag);
159
160 #ifdef __cplusplus
161 }
162 #endif
163
164 #endif /* _SYS_DSL_POOL_H */