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>
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)
56 typedef struct zfs_blkstat {
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;
67 typedef struct zfs_all_blkstats {
68 zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1];
71 typedef struct txg_history {
79 typedef struct dsl_pool {
82 struct objset *dp_meta_objset;
83 struct dsl_dir *dp_root_dir;
84 struct dsl_dir *dp_mos_dir;
85 struct dsl_dir *dp_free_dir;
86 struct dsl_dataset *dp_origin_snap;
87 uint64_t dp_root_dir_obj;
88 struct taskq *dp_iput_taskq;
89 kstat_t *dp_txg_kstat;
91 /* No lock needed - sync context only */
92 blkptr_t dp_meta_rootbp;
93 hrtime_t dp_read_overhead;
94 uint64_t dp_throughput; /* bytes per millisec */
95 uint64_t dp_write_limit;
96 uint64_t dp_tmp_userrefs_obj;
97 bpobj_t dp_free_bpobj;
98 uint64_t dp_bptree_obj;
99 uint64_t dp_empty_bpobj;
101 struct dsl_scan *dp_scan;
105 uint64_t dp_space_towrite[TXG_SIZE];
106 uint64_t dp_tempreserved[TXG_SIZE];
107 uint64_t dp_mos_used_delta;
108 uint64_t dp_mos_compressed_delta;
109 uint64_t dp_mos_uncompressed_delta;
110 uint64_t dp_txg_history_size;
111 list_t dp_txg_history;
114 /* Has its own locking */
116 txg_list_t dp_dirty_datasets;
117 txg_list_t dp_dirty_zilogs;
118 txg_list_t dp_dirty_dirs;
119 txg_list_t dp_sync_tasks;
122 * Protects administrative changes (properties, namespace)
123 * It is only held for write in syncing context. Therefore
124 * syncing context does not need to ever have it for read, since
125 * nobody else could possibly have it for write.
127 krwlock_t dp_config_rwlock;
129 zfs_all_blkstats_t *dp_blkstats;
132 int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp);
133 int dsl_pool_open(dsl_pool_t *dp);
134 void dsl_pool_close(dsl_pool_t *dp);
135 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg);
136 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg);
137 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg);
138 int dsl_pool_sync_context(dsl_pool_t *dp);
139 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree);
140 uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree);
141 int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx);
142 void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
143 void dsl_pool_memory_pressure(dsl_pool_t *dp);
144 void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx);
145 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp);
146 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg,
147 const blkptr_t *bpp);
148 int dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf,
149 arc_done_func_t *done, void *private, int priority, int zio_flags,
150 uint32_t *arc_flags, const zbookmark_t *zb);
151 int dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp,
152 arc_done_func_t *done, void *private, int priority, int zio_flags,
153 uint32_t *arc_flags, const zbookmark_t *zb);
154 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx);
155 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx);
156 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx);
157 void dsl_pool_mos_diduse_space(dsl_pool_t *dp,
158 int64_t used, int64_t comp, int64_t uncomp);
160 taskq_t *dsl_pool_iput_taskq(dsl_pool_t *dp);
162 extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj,
163 const char *tag, uint64_t *now, dmu_tx_t *tx);
164 extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj,
165 const char *tag, dmu_tx_t *tx);
166 extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp);
167 int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **);
169 txg_history_t *dsl_pool_txg_history_add(dsl_pool_t *dp, uint64_t txg);
170 txg_history_t *dsl_pool_txg_history_get(dsl_pool_t *dp, uint64_t txg);
171 void dsl_pool_txg_history_put(txg_history_t *th);
177 #endif /* _SYS_DSL_POOL_H */