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 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_DSL_POOL_H 27 #define _SYS_DSL_POOL_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 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 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 struct objset; 42 struct dsl_dir; 43 struct dsl_dataset; 44 struct dsl_pool; 45 struct dmu_tx; 46 47 enum scrub_func { 48 SCRUB_FUNC_NONE, 49 SCRUB_FUNC_CLEAN, 50 SCRUB_FUNC_NUMFUNCS 51 }; 52 53 54 typedef struct dsl_pool { 55 /* Immutable */ 56 spa_t *dp_spa; 57 struct objset *dp_meta_objset; 58 struct dsl_dir *dp_root_dir; 59 struct dsl_dir *dp_mos_dir; 60 struct dsl_dataset *dp_origin_snap; 61 uint64_t dp_root_dir_obj; 62 63 /* No lock needed - sync context only */ 64 blkptr_t dp_meta_rootbp; 65 list_t dp_synced_datasets; 66 uint64_t dp_write_limit; 67 68 /* Uses dp_lock */ 69 kmutex_t dp_lock; 70 uint64_t dp_space_towrite[TXG_SIZE]; 71 uint64_t dp_tempreserved[TXG_SIZE]; 72 73 enum scrub_func dp_scrub_func; 74 uint64_t dp_scrub_queue_obj; 75 uint64_t dp_scrub_min_txg; 76 uint64_t dp_scrub_max_txg; 77 zbookmark_t dp_scrub_bookmark; 78 boolean_t dp_scrub_pausing; 79 boolean_t dp_scrub_isresilver; 80 uint64_t dp_scrub_start_time; 81 kmutex_t dp_scrub_cancel_lock; /* protects dp_scrub_restart */ 82 boolean_t dp_scrub_restart; 83 84 /* Has its own locking */ 85 tx_state_t dp_tx; 86 txg_list_t dp_dirty_datasets; 87 txg_list_t dp_dirty_dirs; 88 txg_list_t dp_sync_tasks; 89 90 /* 91 * Protects administrative changes (properties, namespace) 92 * It is only held for write in syncing context. Therefore 93 * syncing context does not need to ever have it for read, since 94 * nobody else could possibly have it for write. 95 */ 96 krwlock_t dp_config_rwlock; 97 } dsl_pool_t; 98 99 int dsl_pool_open(spa_t *spa, uint64_t txg, dsl_pool_t **dpp); 100 void dsl_pool_close(dsl_pool_t *dp); 101 dsl_pool_t *dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg); 102 void dsl_pool_sync(dsl_pool_t *dp, uint64_t txg); 103 void dsl_pool_zil_clean(dsl_pool_t *dp); 104 int dsl_pool_sync_context(dsl_pool_t *dp); 105 uint64_t dsl_pool_adjustedsize(dsl_pool_t *dp, boolean_t netfree); 106 int dsl_pool_tempreserve_space(dsl_pool_t *dp, uint64_t space, dmu_tx_t *tx); 107 void dsl_pool_tempreserve_clear(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 108 void dsl_pool_memory_pressure(dsl_pool_t *dp); 109 void dsl_pool_willuse_space(dsl_pool_t *dp, int64_t space, dmu_tx_t *tx); 110 int dsl_free(zio_t *pio, dsl_pool_t *dp, uint64_t txg, const blkptr_t *bpp, 111 zio_done_func_t *done, void *private, uint32_t arc_flags); 112 void dsl_pool_ds_destroyed(struct dsl_dataset *ds, struct dmu_tx *tx); 113 void dsl_pool_ds_snapshotted(struct dsl_dataset *ds, struct dmu_tx *tx); 114 void dsl_pool_create_origin(dsl_pool_t *dp, dmu_tx_t *tx); 115 void dsl_pool_upgrade_clones(dsl_pool_t *dp, dmu_tx_t *tx); 116 117 int dsl_pool_scrub_cancel(dsl_pool_t *dp); 118 int dsl_pool_scrub_clean(dsl_pool_t *dp); 119 void dsl_pool_scrub_sync(dsl_pool_t *dp, dmu_tx_t *tx); 120 void dsl_pool_scrub_restart(dsl_pool_t *dp); 121 122 #ifdef __cplusplus 123 } 124 #endif 125 126 #endif /* _SYS_DSL_POOL_H */ 127