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
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43
44 struct objset;
45 struct dsl_dir;
46 struct dsl_dataset;
47 struct dsl_pool;
48 struct dmu_tx;
49 struct dsl_scan;
50
51 /* These macros are for indexing into the zfs_all_blkstats_t. */
52 #define DMU_OT_DEFERRED DMU_OT_NONE
53 #define DMU_OT_OTHER DMU_OT_NUMTYPES /* place holder for DMU_OT() types */
54 #define DMU_OT_TOTAL (DMU_OT_NUMTYPES + 1)
55
56 typedef struct zfs_blkstat {
57 uint64_t zb_count;
58 uint64_t zb_asize;
59 uint64_t zb_lsize;
60 uint64_t zb_psize;
61 uint64_t zb_gangs;
62 uint64_t zb_ditto_2_of_2_samevdev;
63 uint64_t zb_ditto_2_of_3_samevdev;
64 uint64_t zb_ditto_3_of_3_samevdev;
65 } zfs_blkstat_t;
66
67 typedef struct zfs_all_blkstats {
68 zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
69 } zfs_all_blkstats_t;
70
71
72 typedef struct dsl_pool {
73 /* Immutable */
74 spa_t *dp_spa;
75 struct objset *dp_meta_objset;
76 struct dsl_dir *dp_root_dir;
77 struct dsl_dir *dp_mos_dir;
78 struct dsl_dir *dp_free_dir;
79 struct dsl_dataset *dp_origin_snap;
80 uint64_t dp_root_dir_obj;
81 struct taskq *dp_vnrele_taskq;
82
83 /* No lock needed - sync context only */
84 blkptr_t dp_meta_rootbp;
85 list_t dp_synced_datasets;
86 hrtime_t dp_read_overhead;
87 uint64_t dp_throughput; /* bytes per millisec */
88 uint64_t dp_write_limit;
89 uint64_t dp_tmp_userrefs_obj;
90 bpobj_t dp_free_bpobj;
91 uint64_t dp_bptree_obj;
92
93 struct dsl_scan *dp_scan;
94
95 /* Uses dp_lock */
96 kmutex_t dp_lock;
97 uint64_t dp_space_towrite[TXG_SIZE];
98 uint64_t dp_tempreserved[TXG_SIZE];
99
100 /* Has its own locking */
101 tx_state_t dp_tx;
102 txg_list_t dp_dirty_datasets;
103 txg_list_t dp_dirty_dirs;
104 txg_list_t dp_sync_tasks;
105
106 /*
107 * Protects administrative changes (properties, namespace)
108 * It is only held for write in syncing context. Therefore
109 * syncing context does not need to ever have it for read, since
110 * nobody else could possibly have it for write.
111 */
112 krwlock_t dp_config_rwlock;
113
114 zfs_all_blkstats_t *dp_blkstats;
115 } dsl_pool_t;
116
117 int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
118 int dsl_pool_open(dsl_pool_t *dp);
119 void dsl_pool_close(dsl_pool_t *dp);
120 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);
121 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
122 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);
123 int dsl_pool_sync_context(dsl_pool_t *dp);
124 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
125 uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree);
126 int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx);
127 void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
128 void dsl_pool_memory_pressure(dsl_pool_t *dp);
129 void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
130 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);
131 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,
132 const blkptr_t *bpp);
133 int dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf,
134 arc_done_func_t *done, void *private, int priority, int zio_flags,
135 uint32_t *arc_flags, const zbookmark_t *zb);
136 int dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp,
137 arc_done_func_t *done, void *private, int priority, int zio_flags,
138 uint32_t *arc_flags, const zbookmark_t *zb);
139 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
140 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);
141 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx);
142
143 taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp);
144
145 extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,
146 const char *tag, uint64_t *now, dmu_tx_t *tx);
147 extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,
148 const char *tag, dmu_tx_t *tx);
149 extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp);
150 int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);
151
152 #ifdef __cplusplus
153 }
154 #endif
155
156 #endif /* _SYS_DSL_POOL_H */