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 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_SPA_IMPL_H 27 #define _SYS_SPA_IMPL_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/spa.h> 32 #include <sys/vdev.h> 33 #include <sys/metaslab.h> 34 #include <sys/dmu.h> 35 #include <sys/dsl_pool.h> 36 #include <sys/uberblock_impl.h> 37 #include <sys/zfs_context.h> 38 #include <sys/avl.h> 39 #include <sys/refcount.h> 40 #include <sys/bplist.h> 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 typedef struct spa_config_lock { 47 kmutex_t scl_lock; 48 refcount_t scl_count; 49 kthread_t *scl_writer; 50 kcondvar_t scl_cv; 51 } spa_config_lock_t; 52 53 typedef struct spa_error_entry { 54 zbookmark_t se_bookmark; 55 char *se_name; 56 avl_node_t se_avl; 57 } spa_error_entry_t; 58 59 struct spa { 60 /* 61 * Fields protected by spa_namespace_lock. 62 */ 63 char *spa_name; /* pool name */ 64 avl_node_t spa_avl; /* node in spa_namespace_avl */ 65 nvlist_t *spa_config; /* last synced config */ 66 nvlist_t *spa_config_syncing; /* currently syncing config */ 67 uint64_t spa_config_txg; /* txg of last config change */ 68 kmutex_t spa_config_cache_lock; /* for spa_config RW_READER */ 69 int spa_sync_pass; /* iterate-to-convergence */ 70 int spa_state; /* pool state */ 71 int spa_inject_ref; /* injection references */ 72 uint8_t spa_traverse_wanted; /* traverse lock wanted */ 73 uint8_t spa_sync_on; /* sync threads are running */ 74 spa_load_state_t spa_load_state; /* current load operation */ 75 taskq_t *spa_zio_issue_taskq[ZIO_TYPES]; 76 taskq_t *spa_zio_intr_taskq[ZIO_TYPES]; 77 dsl_pool_t *spa_dsl_pool; 78 metaslab_class_t *spa_normal_class; /* normal data class */ 79 uint64_t spa_first_txg; /* first txg after spa_open() */ 80 uint64_t spa_final_txg; /* txg of export/destroy */ 81 uint64_t spa_freeze_txg; /* freeze pool at this txg */ 82 objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */ 83 txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */ 84 vdev_t *spa_root_vdev; /* top-level vdev container */ 85 uint64_t spa_load_guid; /* initial guid for spa_load */ 86 list_t spa_dirty_list; /* vdevs with dirty labels */ 87 uint64_t spa_spares_object; /* MOS object for spare list */ 88 nvlist_t *spa_sparelist; /* cached spare config */ 89 vdev_t **spa_spares; /* available hot spares */ 90 int spa_nspares; /* number of hot spares */ 91 boolean_t spa_sync_spares; /* sync the spares list */ 92 uint64_t spa_config_object; /* MOS object for pool config */ 93 uint64_t spa_syncing_txg; /* txg currently syncing */ 94 uint64_t spa_sync_bplist_obj; /* object for deferred frees */ 95 bplist_t spa_sync_bplist; /* deferred-free bplist */ 96 krwlock_t spa_traverse_lock; /* traverse vs. spa_sync() */ 97 uberblock_t spa_ubsync; /* last synced uberblock */ 98 uberblock_t spa_uberblock; /* current uberblock */ 99 kmutex_t spa_scrub_lock; /* resilver/scrub lock */ 100 kthread_t *spa_scrub_thread; /* scrub/resilver thread */ 101 traverse_handle_t *spa_scrub_th; /* scrub traverse handle */ 102 uint64_t spa_scrub_restart_txg; /* need to restart */ 103 uint64_t spa_scrub_mintxg; /* min txg we'll scrub */ 104 uint64_t spa_scrub_maxtxg; /* max txg we'll scrub */ 105 uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */ 106 int64_t spa_scrub_throttled; /* over-throttle scrub I/Os */ 107 uint64_t spa_scrub_errors; /* scrub I/O error count */ 108 int spa_scrub_suspended; /* tell scrubber to suspend */ 109 kcondvar_t spa_scrub_cv; /* scrub thread state change */ 110 kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */ 111 uint8_t spa_scrub_stop; /* tell scrubber to stop */ 112 uint8_t spa_scrub_active; /* active or suspended? */ 113 uint8_t spa_scrub_type; /* type of scrub we're doing */ 114 uint8_t spa_scrub_finished; /* indicator to rotate logs */ 115 kmutex_t spa_async_lock; /* protect async state */ 116 kthread_t *spa_async_thread; /* thread doing async task */ 117 int spa_async_suspended; /* async tasks suspended */ 118 kcondvar_t spa_async_cv; /* wait for thread_exit() */ 119 uint16_t spa_async_tasks; /* async task mask */ 120 char *spa_root; /* alternate root directory */ 121 kmutex_t spa_uberblock_lock; /* vdev_uberblock_load_done() */ 122 uint64_t spa_ena; /* spa-wide ereport ENA */ 123 boolean_t spa_last_open_failed; /* true if last open faled */ 124 kmutex_t spa_errlog_lock; /* error log lock */ 125 uint64_t spa_errlog_last; /* last error log object */ 126 uint64_t spa_errlog_scrub; /* scrub error log object */ 127 kmutex_t spa_errlist_lock; /* error list/ereport lock */ 128 avl_tree_t spa_errlist_last; /* last error list */ 129 avl_tree_t spa_errlist_scrub; /* scrub error list */ 130 uint64_t spa_deflate; /* should we deflate? */ 131 /* 132 * spa_refcnt must be the last element because it changes size based on 133 * compilation options. In order for the MDB module to function 134 * correctly, the other fields must remain in the same location. 135 */ 136 spa_config_lock_t spa_config_lock; /* configuration changes */ 137 refcount_t spa_refcount; /* number of opens */ 138 }; 139 140 extern const char *spa_config_dir; 141 extern kmutex_t spa_namespace_lock; 142 143 #ifdef __cplusplus 144 } 145 #endif 146 147 #endif /* _SYS_SPA_IMPL_H */ 148