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) 2013 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 #include <sys/rrwlock.h> 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 struct objset; 46 struct dsl_dir; 47 struct dsl_dataset; 48 struct dsl_pool; 49 struct dmu_tx; 50 struct dsl_scan; 51 52 extern uint64_t zfs_dirty_data_max; 53 extern uint64_t zfs_dirty_data_max_max; 54 extern uint64_t zfs_dirty_data_sync; 55 extern int zfs_dirty_data_max_percent; 56 extern int zfs_delay_min_dirty_percent; 57 extern uint64_t zfs_delay_scale; 58 59 /* These macros are for indexing into the zfs_all_blkstats_t. */ 60 #define DMU_OT_DEFERRED DMU_OT_NONE 61 #define DMU_OT_OTHER DMU_OT_NUMTYPES /* place holder for DMU_OT() types */ 62 #define DMU_OT_TOTAL (DMU_OT_NUMTYPES + 1) 63 64 typedef struct zfs_blkstat { 65 uint64_t zb_count; 66 uint64_t zb_asize; 67 uint64_t zb_lsize; 68 uint64_t zb_psize; 69 uint64_t zb_gangs; 70 uint64_t zb_ditto_2_of_2_samevdev; 71 uint64_t zb_ditto_2_of_3_samevdev; 72 uint64_t zb_ditto_3_of_3_samevdev; 73 } zfs_blkstat_t; 74 75 typedef struct zfs_all_blkstats { 76 zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1]; 77 } zfs_all_blkstats_t; 78 79 80 typedef struct dsl_pool { 81 /* Immutable */ 82 spa_t *dp_spa; 83 struct objset *dp_meta_objset; 84 struct dsl_dir *dp_root_dir; 85 struct dsl_dir *dp_mos_dir; 86 struct dsl_dir *dp_free_dir; 87 struct dsl_dir *dp_leak_dir; 88 struct dsl_dataset *dp_origin_snap; 89 uint64_t dp_root_dir_obj; 90 struct taskq *dp_vnrele_taskq; 91 92 /* No lock needed - sync context only */ 93 blkptr_t dp_meta_rootbp; 94 uint64_t dp_tmp_userrefs_obj; 95 bpobj_t dp_free_bpobj; 96 uint64_t dp_bptree_obj; 97 uint64_t dp_empty_bpobj; 98 99 struct dsl_scan *dp_scan; 100 101 /* Uses dp_lock */ 102 kmutex_t dp_lock; 103 kcondvar_t dp_spaceavail_cv; 104 uint64_t dp_dirty_pertxg[TXG_SIZE]; 105 uint64_t dp_dirty_total; 106 uint64_t dp_mos_used_delta; 107 uint64_t dp_mos_compressed_delta; 108 uint64_t dp_mos_uncompressed_delta; 109 110 /* 111 * Time of most recently scheduled (furthest in the future) 112 * wakeup for delayed transactions. 113 */ 114 hrtime_t dp_last_wakeup; 115 116 /* Has its own locking */ 117 tx_state_t dp_tx; 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; 122 123 /* 124 * Protects administrative changes (properties, namespace) 125 * 126 * It is only held for write in syncing context. Therefore 127 * syncing context does not need to ever have it for read, since 128 * nobody else could possibly have it for write. 129 */ 130 rrwlock_t dp_config_rwlock; 131 132 zfs_all_blkstats_t *dp_blkstats; 133 } dsl_pool_t; 134 135 int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp); 136 int dsl_pool_open(dsl_pool_t *dp); 137 void dsl_pool_close(dsl_pool_t *dp); 138 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg); 139 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg); 140 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg); 141 int dsl_pool_sync_context(dsl_pool_t *dp); 142 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree); 143 uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree); 144 void dsl_pool_dirty_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 145 void dsl_pool_undirty_space(dsl_pool_t *dp, int64_t space, uint64_t txg); 146 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp); 147 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg, 148 const blkptr_t *bpp); 149 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx); 150 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx); 151 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx); 152 void dsl_pool_mos_diduse_space(dsl_pool_t *dp, 153 int64_t used, int64_t comp, int64_t uncomp); 154 void dsl_pool_config_enter(dsl_pool_t *dp, void *tag); 155 void dsl_pool_config_enter_prio(dsl_pool_t *dp, void *tag); 156 void dsl_pool_config_exit(dsl_pool_t *dp, void *tag); 157 boolean_t dsl_pool_config_held(dsl_pool_t *dp); 158 boolean_t dsl_pool_config_held_writer(dsl_pool_t *dp); 159 boolean_t dsl_pool_need_dirty_delay(dsl_pool_t *dp); 160 161 taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp); 162 163 int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj, 164 const char *tag, uint64_t now, dmu_tx_t *tx); 165 int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj, 166 const char *tag, dmu_tx_t *tx); 167 void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp); 168 int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **); 169 int dsl_pool_hold(const char *name, void *tag, dsl_pool_t **dp); 170 void dsl_pool_rele(dsl_pool_t *dp, void *tag); 171 172 #ifdef __cplusplus 173 } 174 #endif 175 176 #endif /* _SYS_DSL_POOL_H */ 177