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, 2017 by Delphix. All rights reserved. 24 * Copyright 2016 Nexenta Systems, Inc. All rights reserved. 25 */ 26 27 #ifndef _SYS_DSL_POOL_H 28 #define _SYS_DSL_POOL_H 29 30 #include <sys/spa.h> 31 #include <sys/txg.h> 32 #include <sys/txg_impl.h> 33 #include <sys/zfs_context.h> 34 #include <sys/zio.h> 35 #include <sys/dnode.h> 36 #include <sys/ddt.h> 37 #include <sys/arc.h> 38 #include <sys/bpobj.h> 39 #include <sys/bptree.h> 40 #include <sys/rrwlock.h> 41 #include <sys/dsl_synctask.h> 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif 46 47 struct objset; 48 struct dsl_dir; 49 struct dsl_dataset; 50 struct dsl_pool; 51 struct dmu_tx; 52 struct dsl_scan; 53 54 extern uint64_t zfs_dirty_data_max; 55 extern uint64_t zfs_dirty_data_max_max; 56 extern uint64_t zfs_dirty_data_sync_pct; 57 extern int zfs_dirty_data_max_percent; 58 extern int zfs_delay_min_dirty_percent; 59 extern uint64_t zfs_delay_scale; 60 61 /* These macros are for indexing into the zfs_all_blkstats_t. */ 62 #define DMU_OT_DEFERRED DMU_OT_NONE 63 #define DMU_OT_OTHER DMU_OT_NUMTYPES /* place holder for DMU_OT() types */ 64 #define DMU_OT_TOTAL (DMU_OT_NUMTYPES + 1) 65 66 typedef struct zfs_blkstat { 67 uint64_t zb_count; 68 uint64_t zb_asize; 69 uint64_t zb_lsize; 70 uint64_t zb_psize; 71 uint64_t zb_gangs; 72 uint64_t zb_ditto_2_of_2_samevdev; 73 uint64_t zb_ditto_2_of_3_samevdev; 74 uint64_t zb_ditto_3_of_3_samevdev; 75 } zfs_blkstat_t; 76 77 typedef struct zfs_all_blkstats { 78 zfs_blkstat_t zab_type[DN_MAX_LEVELS + 1][DMU_OT_TOTAL + 1]; 79 } zfs_all_blkstats_t; 80 81 82 typedef struct dsl_pool { 83 /* Immutable */ 84 spa_t *dp_spa; 85 struct objset *dp_meta_objset; 86 struct dsl_dir *dp_root_dir; 87 struct dsl_dir *dp_mos_dir; 88 struct dsl_dir *dp_free_dir; 89 struct dsl_dir *dp_leak_dir; 90 struct dsl_dataset *dp_origin_snap; 91 uint64_t dp_root_dir_obj; 92 taskq_t *dp_vnrele_taskq; 93 94 /* No lock needed - sync context only */ 95 blkptr_t dp_meta_rootbp; 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; 100 bpobj_t dp_obsolete_bpobj; 101 102 struct dsl_scan *dp_scan; 103 104 /* Uses dp_lock */ 105 kmutex_t dp_lock; 106 kcondvar_t dp_spaceavail_cv; 107 uint64_t dp_dirty_pertxg[TXG_SIZE]; 108 uint64_t dp_dirty_total; 109 uint64_t dp_long_free_dirty_pertxg[TXG_SIZE]; 110 uint64_t dp_mos_used_delta; 111 uint64_t dp_mos_compressed_delta; 112 uint64_t dp_mos_uncompressed_delta; 113 114 /* 115 * Time of most recently scheduled (furthest in the future) 116 * wakeup for delayed transactions. 117 */ 118 hrtime_t dp_last_wakeup; 119 120 /* Has its own locking */ 121 tx_state_t dp_tx; 122 txg_list_t dp_dirty_datasets; 123 txg_list_t dp_dirty_zilogs; 124 txg_list_t dp_dirty_dirs; 125 txg_list_t dp_sync_tasks; 126 txg_list_t dp_early_sync_tasks; 127 taskq_t *dp_sync_taskq; 128 taskq_t *dp_zil_clean_taskq; 129 130 /* 131 * Protects administrative changes (properties, namespace) 132 * 133 * It is only held for write in syncing context. Therefore 134 * syncing context does not need to ever have it for read, since 135 * nobody else could possibly have it for write. 136 */ 137 rrwlock_t dp_config_rwlock; 138 139 zfs_all_blkstats_t *dp_blkstats; 140 } dsl_pool_t; 141 142 int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp); 143 int dsl_pool_open(dsl_pool_t *dp); 144 void dsl_pool_close(dsl_pool_t *dp); 145 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg); 146 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg); 147 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg); 148 int dsl_pool_sync_context(dsl_pool_t *dp); 149 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, zfs_space_check_t slop_policy); 150 uint64_t dsl_pool_unreserved_space(dsl_pool_t *dp, 151 zfs_space_check_t slop_policy); 152 void dsl_pool_dirty_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 153 void dsl_pool_undirty_space(dsl_pool_t *dp, int64_t space, uint64_t txg); 154 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp); 155 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg, 156 const blkptr_t *bpp); 157 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx); 158 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx); 159 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx); 160 void dsl_pool_mos_diduse_space(dsl_pool_t *dp, 161 int64_t used, int64_t comp, int64_t uncomp); 162 void dsl_pool_ckpoint_diduse_space(dsl_pool_t *dp, 163 int64_t used, int64_t comp, int64_t uncomp); 164 void dsl_pool_config_enter(dsl_pool_t *dp, void *tag); 165 void dsl_pool_config_enter_prio(dsl_pool_t *dp, void *tag); 166 void dsl_pool_config_exit(dsl_pool_t *dp, void *tag); 167 boolean_t dsl_pool_config_held(dsl_pool_t *dp); 168 boolean_t dsl_pool_config_held_writer(dsl_pool_t *dp); 169 boolean_t dsl_pool_need_dirty_delay(dsl_pool_t *dp); 170 171 taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp); 172 173 int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj, 174 const char *tag, uint64_t now, dmu_tx_t *tx); 175 int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj, 176 const char *tag, dmu_tx_t *tx); 177 void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp); 178 int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **); 179 int dsl_pool_hold(const char *name, void *tag, dsl_pool_t **dp); 180 void dsl_pool_rele(dsl_pool_t *dp, void *tag); 181 182 void dsl_pool_create_obsolete_bpobj(dsl_pool_t *dp, dmu_tx_t *tx); 183 void dsl_pool_destroy_obsolete_bpobj(dsl_pool_t *dp, dmu_tx_t *tx); 184 185 #ifdef __cplusplus 186 } 187 #endif 188 189 #endif /* _SYS_DSL_POOL_H */ 190