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) 2012 by Delphix. All rights reserved.
26 #ifndef _SYS_DSL_POOL_H
27 #define _SYS_DSL_POOL_H
31 #include <sys/txg_impl.h>
32 #include <sys/zfs_context.h>
34 #include <sys/dnode.h>
37 #include <sys/bpobj.h>
38 #include <sys/bptree.h>
44 extern int zfs_txg_synctime_ms;
53 /* These macros are for indexing into the zfs_all_blkstats_t. */
54 #define DMU_OT_DEFERRED DMU_OT_NONE
55 #define DMU_OT_OTHER DMU_OT_NUMTYPES /* place holder for DMU_OT() types */
56 #define DMU_OT_TOTAL (DMU_OT_NUMTYPES + 1)
58 typedef struct zfs_blkstat {
64 uint64_t zb_ditto_2_of_2_samevdev;
65 uint64_t zb_ditto_2_of_3_samevdev;
66 uint64_t zb_ditto_3_of_3_samevdev;
69 typedef struct zfs_all_blkstats {
70 zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
73 typedef struct txg_history {
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_dataset *dp_origin_snap;
89 uint64_t dp_root_dir_obj;
90 struct taskq *dp_iput_taskq;
91 kstat_t *dp_txg_kstat;
93 /* No lock needed - sync context only */
94 blkptr_t dp_meta_rootbp;
95 hrtime_t dp_read_overhead;
96 uint64_t dp_throughput; /* bytes per millisec */
97 uint64_t dp_write_limit;
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 uint64_t dp_space_towrite[TXG_SIZE];
108 uint64_t dp_tempreserved[TXG_SIZE];
109 uint64_t dp_mos_used_delta;
110 uint64_t dp_mos_compressed_delta;
111 uint64_t dp_mos_uncompressed_delta;
112 uint64_t dp_txg_history_size;
113 list_t dp_txg_history;
116 /* Has its own locking */
118 txg_list_t dp_dirty_datasets;
119 txg_list_t dp_dirty_zilogs;
120 txg_list_t dp_dirty_dirs;
121 txg_list_t dp_sync_tasks;
124 * Protects administrative changes (properties, namespace)
125 * It is only held for write in syncing context. Therefore
126 * syncing context does not need to ever have it for read, since
127 * nobody else could possibly have it for write.
129 krwlock_t dp_config_rwlock;
131 zfs_all_blkstats_t *dp_blkstats;
134 int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
135 int dsl_pool_open(dsl_pool_t *dp);
136 void dsl_pool_close(dsl_pool_t *dp);
137 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);
138 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
139 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);
140 int dsl_pool_sync_context(dsl_pool_t *dp);
141 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
142 uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree);
143 int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx);
144 void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
145 void dsl_pool_memory_pressure(dsl_pool_t *dp);
146 void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
147 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);
148 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,
149 const blkptr_t *bpp);
150 int dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf,
151 arc_done_func_t *done, void *private, int priority, int zio_flags,
152 uint32_t *arc_flags, const zbookmark_t *zb);
153 int dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp,
154 arc_done_func_t *done, void *private, int priority, int zio_flags,
155 uint32_t *arc_flags, const zbookmark_t *zb);
156 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
157 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);
158 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx);
159 void dsl_pool_mos_diduse_space(dsl_pool_t *dp,
160 int64_t used, int64_t comp, int64_t uncomp);
162 taskq_t *dsl_pool_iput_taskq(dsl_pool_t *dp);
164 extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,
165 const char *tag, uint64_t *now, dmu_tx_t *tx);
166 extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,
167 const char *tag, dmu_tx_t *tx);
168 extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp);
169 int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);
171 txg_history_t *dsl_pool_txg_history_add(dsl_pool_t *dp, uint64_t txg);
172 txg_history_t *dsl_pool_txg_history_get(dsl_pool_t *dp, uint64_t txg);
173 void dsl_pool_txg_history_put(txg_history_t *th);
179 #endif /* _SYS_DSL_POOL_H */