1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2013, 2018 by Delphix. All rights reserved. 25 * Copyright 2016 Nexenta Systems, Inc. All rights reserved. 26 */ 27 28 #ifndef _SYS_DSL_POOL_H 29 #define _SYS_DSL_POOL_H 30 31 #include <sys/spa.h> 32 #include <sys/txg.h> 33 #include <sys/txg_impl.h> 34 #include <sys/zfs_context.h> 35 #include <sys/zio.h> 36 #include <sys/dnode.h> 37 #include <sys/ddt.h> 38 #include <sys/arc.h> 39 #include <sys/bpobj.h> 40 #include <sys/bptree.h> 41 #include <sys/rrwlock.h> 42 #include <sys/dsl_synctask.h> 43 #include <sys/mmp.h> 44 #include <sys/aggsum.h> 45 46 #ifdef __cplusplus 47 extern "C" { 48 #endif 49 50 extern int zfs_txg_synctime_ms; 51 52 struct objset; 53 struct dsl_dir; 54 struct dsl_dataset; 55 struct dsl_pool; 56 struct dmu_tx; 57 struct dsl_scan; 58 struct dsl_crypto_params; 59 struct dsl_deadlist; 60 61 extern uint64_t zfs_dirty_data_max; 62 extern uint64_t zfs_dirty_data_max_max; 63 extern uint64_t zfs_wrlog_data_max; 64 extern uint_t zfs_dirty_data_max_percent; 65 extern uint_t zfs_dirty_data_max_max_percent; 66 extern uint_t zfs_delay_min_dirty_percent; 67 extern uint_t zfs_vdev_async_write_active_min_dirty_percent; 68 extern uint_t zfs_vdev_async_write_active_max_dirty_percent; 69 extern uint64_t zfs_delay_scale; 70 71 /* These macros are for indexing into the zfs_all_blkstats_t. */ 72 #define DMU_OT_DEFERRED DMU_OT_NONE 73 #define DMU_OT_OTHER DMU_OT_NUMTYPES /* place holder for DMU_OT() types */ 74 #define DMU_OT_TOTAL (DMU_OT_NUMTYPES + 1) 75 76 typedef struct zfs_blkstat { 77 uint64_t zb_count; 78 uint64_t zb_asize; 79 uint64_t zb_lsize; 80 uint64_t zb_psize; 81 uint64_t zb_gangs; 82 uint64_t zb_ditto_2_of_2_samevdev; 83 uint64_t zb_ditto_2_of_3_samevdev; 84 uint64_t zb_ditto_3_of_3_samevdev; 85 } zfs_blkstat_t; 86 87 typedef struct zfs_all_blkstats { 88 zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1]; 89 } zfs_all_blkstats_t; 90 91 92 typedef struct dsl_pool { 93 /* Immutable */ 94 spa_t *dp_spa; 95 struct objset *dp_meta_objset; 96 struct dsl_dir *dp_root_dir; 97 struct dsl_dir *dp_mos_dir; 98 struct dsl_dir *dp_free_dir; 99 struct dsl_dir *dp_leak_dir; 100 struct dsl_dataset *dp_origin_snap; 101 uint64_t dp_root_dir_obj; 102 struct taskq *dp_zrele_taskq; 103 struct taskq *dp_unlinked_drain_taskq; 104 105 /* No lock needed - sync context only */ 106 blkptr_t dp_meta_rootbp; 107 uint64_t dp_tmp_userrefs_obj; 108 bpobj_t dp_free_bpobj; 109 uint64_t dp_bptree_obj; 110 uint64_t dp_empty_bpobj; 111 bpobj_t dp_obsolete_bpobj; 112 113 struct dsl_scan *dp_scan; 114 115 /* Uses dp_lock */ 116 kmutex_t dp_lock; 117 kcondvar_t dp_spaceavail_cv; 118 uint64_t dp_dirty_pertxg[TXG_SIZE]; 119 uint64_t dp_dirty_total; 120 uint64_t dp_long_free_dirty_pertxg[TXG_SIZE]; 121 uint64_t dp_mos_used_delta; 122 uint64_t dp_mos_compressed_delta; 123 uint64_t dp_mos_uncompressed_delta; 124 125 aggsum_t dp_wrlog_pertxg[TXG_SIZE]; 126 aggsum_t dp_wrlog_total; 127 128 /* 129 * Time of most recently scheduled (furthest in the future) 130 * wakeup for delayed transactions. 131 */ 132 hrtime_t dp_last_wakeup; 133 134 /* Has its own locking */ 135 tx_state_t dp_tx; 136 txg_list_t dp_dirty_datasets; 137 txg_list_t dp_dirty_zilogs; 138 txg_list_t dp_dirty_dirs; 139 txg_list_t dp_sync_tasks; 140 txg_list_t dp_early_sync_tasks; 141 taskq_t *dp_sync_taskq; 142 taskq_t *dp_zil_clean_taskq; 143 144 /* 145 * Protects administrative changes (properties, namespace) 146 * 147 * It is only held for write in syncing context. Therefore 148 * syncing context does not need to ever have it for read, since 149 * nobody else could possibly have it for write. 150 */ 151 rrwlock_t dp_config_rwlock; 152 153 zfs_all_blkstats_t *dp_blkstats; 154 } dsl_pool_t; 155 156 int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp); 157 int dsl_pool_open(dsl_pool_t *dp); 158 void dsl_pool_close(dsl_pool_t *dp); 159 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, 160 struct dsl_crypto_params *dcp, uint64_t txg); 161 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg); 162 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg); 163 int dsl_pool_sync_context(dsl_pool_t *dp); 164 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, zfs_space_check_t slop_policy); 165 uint64_t dsl_pool_unreserved_space(dsl_pool_t *dp, 166 zfs_space_check_t slop_policy); 167 uint64_t dsl_pool_deferred_space(dsl_pool_t *dp); 168 void dsl_pool_wrlog_count(dsl_pool_t *dp, int64_t size, uint64_t txg); 169 boolean_t dsl_pool_need_wrlog_delay(dsl_pool_t *dp); 170 void dsl_pool_dirty_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 171 void dsl_pool_undirty_space(dsl_pool_t *dp, int64_t space, uint64_t txg); 172 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp); 173 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg, 174 const blkptr_t *bpp); 175 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx); 176 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx); 177 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx); 178 void dsl_pool_mos_diduse_space(dsl_pool_t *dp, 179 int64_t used, int64_t comp, int64_t uncomp); 180 void dsl_pool_ckpoint_diduse_space(dsl_pool_t *dp, 181 int64_t used, int64_t comp, int64_t uncomp); 182 boolean_t dsl_pool_need_dirty_delay(dsl_pool_t *dp); 183 void dsl_pool_config_enter(dsl_pool_t *dp, const void *tag); 184 void dsl_pool_config_enter_prio(dsl_pool_t *dp, const void *tag); 185 void dsl_pool_config_exit(dsl_pool_t *dp, const void *tag); 186 boolean_t dsl_pool_config_held(dsl_pool_t *dp); 187 boolean_t dsl_pool_config_held_writer(dsl_pool_t *dp); 188 189 taskq_t *dsl_pool_zrele_taskq(dsl_pool_t *dp); 190 taskq_t *dsl_pool_unlinked_drain_taskq(dsl_pool_t *dp); 191 192 int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj, 193 const char *tag, uint64_t now, dmu_tx_t *tx); 194 int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj, 195 const char *tag, dmu_tx_t *tx); 196 void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp); 197 int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **); 198 int dsl_pool_hold(const char *name, const void *tag, dsl_pool_t **dp); 199 void dsl_pool_rele(dsl_pool_t *dp, const void *tag); 200 201 void dsl_pool_create_obsolete_bpobj(dsl_pool_t *dp, dmu_tx_t *tx); 202 void dsl_pool_destroy_obsolete_bpobj(dsl_pool_t *dp, dmu_tx_t *tx); 203 204 #ifdef __cplusplus 205 } 206 #endif 207 208 #endif /* _SYS_DSL_POOL_H */ 209