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 */ 24 25 #ifndef _SYS_DSL_POOL_H 26 #define _SYS_DSL_POOL_H 27 28 #include <sys/spa.h> 29 #include <sys/txg.h> 30 #include <sys/txg_impl.h> 31 #include <sys/zfs_context.h> 32 #include <sys/zio.h> 33 #include <sys/dnode.h> 34 #include <sys/ddt.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 struct objset; 41 struct dsl_dir; 42 struct dsl_dataset; 43 struct dsl_pool; 44 struct dmu_tx; 45 46 enum scrub_func { 47 SCRUB_FUNC_NONE, 48 SCRUB_FUNC_CLEAN, 49 SCRUB_FUNC_NUMFUNCS 50 }; 51 52 /* These macros are for indexing into the zfs_all_blkstats_t. */ 53 #define DMU_OT_DEFERRED DMU_OT_NONE 54 #define DMU_OT_TOTAL DMU_OT_NUMTYPES 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_dataset *dp_origin_snap; 79 uint64_t dp_root_dir_obj; 80 struct taskq *dp_vnrele_taskq; 81 82 /* No lock needed - sync context only */ 83 blkptr_t dp_meta_rootbp; 84 list_t dp_synced_datasets; 85 hrtime_t dp_read_overhead; 86 uint64_t dp_throughput; /* bytes per millisec */ 87 uint64_t dp_write_limit; 88 uint64_t dp_tmp_userrefs_obj; 89 90 /* Uses dp_lock */ 91 kmutex_t dp_lock; 92 uint64_t dp_space_towrite[TXG_SIZE]; 93 uint64_t dp_tempreserved[TXG_SIZE]; 94 95 enum scrub_func dp_scrub_func; 96 uint64_t dp_scrub_queue_obj; 97 uint64_t dp_scrub_min_txg; 98 uint64_t dp_scrub_max_txg; 99 uint64_t dp_scrub_start_time; 100 uint64_t dp_scrub_ddt_class_max; 101 zbookmark_t dp_scrub_bookmark; 102 ddt_bookmark_t dp_scrub_ddt_bookmark; 103 boolean_t dp_scrub_pausing; 104 boolean_t dp_scrub_isresilver; 105 boolean_t dp_scrub_restart; 106 kmutex_t dp_scrub_cancel_lock; /* protects dp_scrub_restart */ 107 zio_t *dp_scrub_prefetch_zio_root; 108 109 /* Has its own locking */ 110 tx_state_t dp_tx; 111 txg_list_t dp_dirty_datasets; 112 txg_list_t dp_dirty_dirs; 113 txg_list_t dp_sync_tasks; 114 115 /* 116 * Protects administrative changes (properties, namespace) 117 * It is only held for write in syncing context. Therefore 118 * syncing context does not need to ever have it for read, since 119 * nobody else could possibly have it for write. 120 */ 121 krwlock_t dp_config_rwlock; 122 123 zfs_all_blkstats_t *dp_blkstats; 124 } dsl_pool_t; 125 126 int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp); 127 void dsl_pool_close(dsl_pool_t *dp); 128 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg); 129 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg); 130 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg); 131 int dsl_pool_sync_context(dsl_pool_t *dp); 132 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree); 133 uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree); 134 int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx); 135 void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 136 void dsl_pool_memory_pressure(dsl_pool_t *dp); 137 void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 138 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp); 139 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg, 140 const blkptr_t *bpp); 141 void dsl_pool_ds_destroyed(struct dsl_dataset *ds, struct dmu_tx *tx); 142 void dsl_pool_ds_snapshotted(struct dsl_dataset *ds, struct dmu_tx *tx); 143 void dsl_pool_ds_clone_swapped(struct dsl_dataset *ds1, struct dsl_dataset *ds2, 144 struct dmu_tx *tx); 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); 147 148 int dsl_pool_scrub_cancel(dsl_pool_t *dp); 149 int dsl_pool_scrub_clean(dsl_pool_t *dp); 150 void dsl_pool_scrub_sync(dsl_pool_t *dp, dmu_tx_t *tx); 151 void dsl_pool_scrub_restart(dsl_pool_t *dp); 152 void dsl_pool_scrub_ddt_entry(dsl_pool_t *dp, enum zio_checksum checksum, 153 const ddt_entry_t *dde); 154 155 taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp); 156 157 extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj, 158 const char *tag, uint64_t *now, dmu_tx_t *tx); 159 extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj, 160 const char *tag, dmu_tx_t *tx); 161 extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp); 162 163 #ifdef __cplusplus 164 } 165 #endif 166 167 #endif /* _SYS_DSL_POOL_H */ 168