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.
25 #ifndef _SYS_DSL_POOL_H
26 #define _SYS_DSL_POOL_H
30 #include <sys/txg_impl.h>
31 #include <sys/zfs_context.h>
33 #include <sys/dnode.h>
36 #include <sys/bpobj.h>
49 /* These macros are for indexing into the zfs_all_blkstats_t. */
50 #define DMU_OT_DEFERRED DMU_OT_NONE
51 #define DMU_OT_TOTAL DMU_OT_NUMTYPES
53 typedef struct zfs_blkstat {
59 uint64_t zb_ditto_2_of_2_samevdev;
60 uint64_t zb_ditto_2_of_3_samevdev;
61 uint64_t zb_ditto_3_of_3_samevdev;
64 typedef struct zfs_all_blkstats {
65 zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
68 typedef struct txg_history {
76 typedef struct dsl_pool {
79 struct objset *dp_meta_objset;
80 struct dsl_dir *dp_root_dir;
81 struct dsl_dir *dp_mos_dir;
82 struct dsl_dir *dp_free_dir;
83 struct dsl_dataset *dp_origin_snap;
84 uint64_t dp_root_dir_obj;
85 struct taskq *dp_iput_taskq;
86 kstat_t *dp_txg_kstat;
88 /* No lock needed - sync context only */
89 blkptr_t dp_meta_rootbp;
90 list_t dp_synced_datasets;
91 hrtime_t dp_read_overhead;
92 uint64_t dp_throughput; /* bytes per millisec */
93 uint64_t dp_write_limit;
94 uint64_t dp_tmp_userrefs_obj;
95 bpobj_t dp_free_bpobj;
97 struct dsl_scan *dp_scan;
101 uint64_t dp_space_towrite[TXG_SIZE];
102 uint64_t dp_tempreserved[TXG_SIZE];
103 uint64_t dp_txg_history_size;
104 list_t dp_txg_history;
107 /* Has its own locking */
109 txg_list_t dp_dirty_datasets;
110 txg_list_t dp_dirty_dirs;
111 txg_list_t dp_sync_tasks;
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.
119 krwlock_t dp_config_rwlock;
121 zfs_all_blkstats_t *dp_blkstats;
124 int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
125 void dsl_pool_close(dsl_pool_t *dp);
126 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);
127 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
128 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);
129 int dsl_pool_sync_context(dsl_pool_t *dp);
130 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
131 uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree);
132 int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx);
133 void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
134 void dsl_pool_memory_pressure(dsl_pool_t *dp);
135 void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
136 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);
137 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,
138 const blkptr_t *bpp);
139 int dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf,
140 arc_done_func_t *done, void *private, int priority, int zio_flags,
141 uint32_t *arc_flags, const zbookmark_t *zb);
142 int dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp,
143 arc_done_func_t *done, void *private, int priority, int zio_flags,
144 uint32_t *arc_flags, const zbookmark_t *zb);
145 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
146 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);
147 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx);
149 taskq_t *dsl_pool_iput_taskq(dsl_pool_t *dp);
151 extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,
152 const char *tag, uint64_t *now, dmu_tx_t *tx);
153 extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,
154 const char *tag, dmu_tx_t *tx);
155 extern 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 **);
158 txg_history_t *dsl_pool_txg_history_add(dsl_pool_t *dp, uint64_t txg);
159 txg_history_t *dsl_pool_txg_history_get(dsl_pool_t *dp, uint64_t txg);
160 void dsl_pool_txg_history_put(txg_history_t *th);
166 #endif /* _SYS_DSL_POOL_H */