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) 2012 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 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 struct objset; 45 struct dsl_dir; 46 struct dsl_dataset; 47 struct dsl_pool; 48 struct dmu_tx; 49 struct dsl_scan; 50 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) 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_dir *dp_free_dir; 79 struct dsl_dataset *dp_origin_snap; 80 uint64_t dp_root_dir_obj; 81 struct taskq *dp_vnrele_taskq; 82 83 /* No lock needed - sync context only */ 84 blkptr_t dp_meta_rootbp; 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 bpobj_t dp_free_bpobj; 90 uint64_t dp_bptree_obj; 91 uint64_t dp_empty_bpobj; 92 93 struct dsl_scan *dp_scan; 94 95 /* Uses dp_lock */ 96 kmutex_t dp_lock; 97 uint64_t dp_space_towrite[TXG_SIZE]; 98 uint64_t dp_tempreserved[TXG_SIZE]; 99 uint64_t dp_mos_used_delta; 100 uint64_t dp_mos_compressed_delta; 101 uint64_t dp_mos_uncompressed_delta; 102 103 /* Has its own locking */ 104 tx_state_t dp_tx; 105 txg_list_t dp_dirty_datasets; 106 txg_list_t dp_dirty_zilogs; 107 txg_list_t dp_dirty_dirs; 108 txg_list_t dp_sync_tasks; 109 110 /* 111 * Protects administrative changes (properties, namespace) 112 * It is only held for write in syncing context. Therefore 113 * syncing context does not need to ever have it for read, since 114 * nobody else could possibly have it for write. 115 */ 116 krwlock_t dp_config_rwlock; 117 118 zfs_all_blkstats_t *dp_blkstats; 119 } dsl_pool_t; 120 121 int dsl_pool_init(spa_t *spa, uint64_t txg, dsl_pool_t **dpp); 122 int dsl_pool_open(dsl_pool_t *dp); 123 void dsl_pool_close(dsl_pool_t *dp); 124 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg); 125 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg); 126 void dsl_pool_sync_done(dsl_pool_t *dp, uint64_t txg); 127 int dsl_pool_sync_context(dsl_pool_t *dp); 128 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree); 129 uint64_t dsl_pool_adjustedfree(dsl_pool_t *dp, boolean_t netfree); 130 int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx); 131 void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 132 void dsl_pool_memory_pressure(dsl_pool_t *dp); 133 void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 134 void dsl_free(dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp); 135 void dsl_free_sync(zio_t *pio, dsl_pool_t *dp, uint64_t txg, 136 const blkptr_t *bpp); 137 int dsl_read(zio_t *pio, spa_t *spa, const blkptr_t *bpp, arc_buf_t *pbuf, 138 arc_done_func_t *done, void *private, int priority, int zio_flags, 139 uint32_t *arc_flags, const zbookmark_t *zb); 140 int dsl_read_nolock(zio_t *pio, spa_t *spa, const blkptr_t *bpp, 141 arc_done_func_t *done, void *private, int priority, int zio_flags, 142 uint32_t *arc_flags, const zbookmark_t *zb); 143 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx); 144 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx); 145 void dsl_pool_upgrade_dir_clones(dsl_pool_t *dp, dmu_tx_t *tx); 146 void dsl_pool_mos_diduse_space(dsl_pool_t *dp, 147 int64_t used, int64_t comp, int64_t uncomp); 148 149 taskq_t *dsl_pool_vnrele_taskq(dsl_pool_t *dp); 150 151 extern int dsl_pool_user_hold(dsl_pool_t *dp, uint64_t dsobj, 152 const char *tag, uint64_t *now, dmu_tx_t *tx); 153 extern int dsl_pool_user_release(dsl_pool_t *dp, uint64_t dsobj, 154 const char *tag, dmu_tx_t *tx); 155 extern void dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp); 156 int dsl_pool_open_special_dir(dsl_pool_t *dp, const char *name, dsl_dir_t **); 157 158 #ifdef __cplusplus 159 } 160 #endif 161 162 #endif /* _SYS_DSL_POOL_H */ 163