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 */ 24 25 #ifndef _SYS_SPA_IMPL_H 26 #define _SYS_SPA_IMPL_H 27 28 #include <sys/spa.h> 29 #include <sys/vdev.h> 30 #include <sys/metaslab.h> 31 #include <sys/dmu.h> 32 #include <sys/dsl_pool.h> 33 #include <sys/uberblock_impl.h> 34 #include <sys/zfs_context.h> 35 #include <sys/avl.h> 36 #include <sys/refcount.h> 37 #include <sys/bplist.h> 38 #include <sys/bpobj.h> 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 typedef struct spa_error_entry { 45 zbookmark_t se_bookmark; 46 char *se_name; 47 avl_node_t se_avl; 48 } spa_error_entry_t; 49 50 typedef struct spa_history_phys { 51 uint64_t sh_pool_create_len; /* ending offset of zpool create */ 52 uint64_t sh_phys_max_off; /* physical EOF */ 53 uint64_t sh_bof; /* logical BOF */ 54 uint64_t sh_eof; /* logical EOF */ 55 uint64_t sh_records_lost; /* num of records overwritten */ 56 } spa_history_phys_t; 57 58 struct spa_aux_vdev { 59 uint64_t sav_object; /* MOS object for device list */ 60 nvlist_t *sav_config; /* cached device config */ 61 vdev_t **sav_vdevs; /* devices */ 62 int sav_count; /* number devices */ 63 boolean_t sav_sync; /* sync the device list */ 64 nvlist_t **sav_pending; /* pending device additions */ 65 uint_t sav_npending; /* # pending devices */ 66 }; 67 68 typedef struct spa_config_lock { 69 kmutex_t scl_lock; 70 kthread_t *scl_writer; 71 int scl_write_wanted; 72 kcondvar_t scl_cv; 73 refcount_t scl_count; 74 } spa_config_lock_t; 75 76 typedef struct spa_config_dirent { 77 list_node_t scd_link; 78 char *scd_path; 79 } spa_config_dirent_t; 80 81 enum zio_taskq_type { 82 ZIO_TASKQ_ISSUE = 0, 83 ZIO_TASKQ_ISSUE_HIGH, 84 ZIO_TASKQ_INTERRUPT, 85 ZIO_TASKQ_INTERRUPT_HIGH, 86 ZIO_TASKQ_TYPES 87 }; 88 89 /* 90 * State machine for the zpool-pooname process. The states transitions 91 * are done as follows: 92 * 93 * From To Routine 94 * PROC_NONE -> PROC_CREATED spa_activate() 95 * PROC_CREATED -> PROC_ACTIVE spa_thread() 96 * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate() 97 * PROC_DEACTIVATE -> PROC_GONE spa_thread() 98 * PROC_GONE -> PROC_NONE spa_deactivate() 99 */ 100 typedef enum spa_proc_state { 101 SPA_PROC_NONE, /* spa_proc = &p0, no process created */ 102 SPA_PROC_CREATED, /* spa_activate() has proc, is waiting */ 103 SPA_PROC_ACTIVE, /* taskqs created, spa_proc set */ 104 SPA_PROC_DEACTIVATE, /* spa_deactivate() requests process exit */ 105 SPA_PROC_GONE /* spa_thread() is exiting, spa_proc = &p0 */ 106 } spa_proc_state_t; 107 108 struct spa { 109 /* 110 * Fields protected by spa_namespace_lock. 111 */ 112 char spa_name[MAXNAMELEN]; /* pool name */ 113 avl_node_t spa_avl; /* node in spa_namespace_avl */ 114 nvlist_t *spa_config; /* last synced config */ 115 nvlist_t *spa_config_syncing; /* currently syncing config */ 116 nvlist_t *spa_config_splitting; /* config for splitting */ 117 nvlist_t *spa_load_info; /* info and errors from load */ 118 uint64_t spa_config_txg; /* txg of last config change */ 119 int spa_sync_pass; /* iterate-to-convergence */ 120 pool_state_t spa_state; /* pool state */ 121 int spa_inject_ref; /* injection references */ 122 uint8_t spa_sync_on; /* sync threads are running */ 123 spa_load_state_t spa_load_state; /* current load operation */ 124 uint64_t spa_import_flags; /* import specific flags */ 125 taskq_t *spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES]; 126 dsl_pool_t *spa_dsl_pool; 127 metaslab_class_t *spa_normal_class; /* normal data class */ 128 metaslab_class_t *spa_log_class; /* intent log data class */ 129 uint64_t spa_first_txg; /* first txg after spa_open() */ 130 uint64_t spa_final_txg; /* txg of export/destroy */ 131 uint64_t spa_freeze_txg; /* freeze pool at this txg */ 132 uint64_t spa_load_max_txg; /* best initial ub_txg */ 133 uint64_t spa_claim_max_txg; /* highest claimed birth txg */ 134 timespec_t spa_loaded_ts; /* 1st successful open time */ 135 objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */ 136 txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */ 137 vdev_t *spa_root_vdev; /* top-level vdev container */ 138 uint64_t spa_load_guid; /* initial guid for spa_load */ 139 list_t spa_config_dirty_list; /* vdevs with dirty config */ 140 list_t spa_state_dirty_list; /* vdevs with dirty state */ 141 spa_aux_vdev_t spa_spares; /* hot spares */ 142 spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */ 143 uint64_t spa_config_object; /* MOS object for pool config */ 144 uint64_t spa_config_generation; /* config generation number */ 145 uint64_t spa_syncing_txg; /* txg currently syncing */ 146 bpobj_t spa_deferred_bpobj; /* deferred-free bplist */ 147 bplist_t spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */ 148 uberblock_t spa_ubsync; /* last synced uberblock */ 149 uberblock_t spa_uberblock; /* current uberblock */ 150 boolean_t spa_extreme_rewind; /* rewind past deferred frees */ 151 uint64_t spa_last_io; /* lbolt of last non-scan I/O */ 152 kmutex_t spa_scrub_lock; /* resilver/scrub lock */ 153 uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */ 154 kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */ 155 uint8_t spa_scrub_active; /* active or suspended? */ 156 uint8_t spa_scrub_type; /* type of scrub we're doing */ 157 uint8_t spa_scrub_finished; /* indicator to rotate logs */ 158 uint8_t spa_scrub_started; /* started since last boot */ 159 uint8_t spa_scrub_reopen; /* scrub doing vdev_reopen */ 160 uint64_t spa_scan_pass_start; /* start time per pass/reboot */ 161 uint64_t spa_scan_pass_exam; /* examined bytes per pass */ 162 kmutex_t spa_async_lock; /* protect async state */ 163 kthread_t *spa_async_thread; /* thread doing async task */ 164 int spa_async_suspended; /* async tasks suspended */ 165 kcondvar_t spa_async_cv; /* wait for thread_exit() */ 166 uint16_t spa_async_tasks; /* async task mask */ 167 char *spa_root; /* alternate root directory */ 168 uint64_t spa_ena; /* spa-wide ereport ENA */ 169 int spa_last_open_failed; /* error if last open failed */ 170 uint64_t spa_last_ubsync_txg; /* "best" uberblock txg */ 171 uint64_t spa_last_ubsync_txg_ts; /* timestamp from that ub */ 172 uint64_t spa_load_txg; /* ub txg that loaded */ 173 uint64_t spa_load_txg_ts; /* timestamp from that ub */ 174 uint64_t spa_load_meta_errors; /* verify metadata err count */ 175 uint64_t spa_load_data_errors; /* verify data err count */ 176 uint64_t spa_verify_min_txg; /* start txg of verify scrub */ 177 kmutex_t spa_errlog_lock; /* error log lock */ 178 uint64_t spa_errlog_last; /* last error log object */ 179 uint64_t spa_errlog_scrub; /* scrub error log object */ 180 kmutex_t spa_errlist_lock; /* error list/ereport lock */ 181 avl_tree_t spa_errlist_last; /* last error list */ 182 avl_tree_t spa_errlist_scrub; /* scrub error list */ 183 uint64_t spa_deflate; /* should we deflate? */ 184 uint64_t spa_history; /* history object */ 185 kmutex_t spa_history_lock; /* history lock */ 186 vdev_t *spa_pending_vdev; /* pending vdev additions */ 187 kmutex_t spa_props_lock; /* property lock */ 188 uint64_t spa_pool_props_object; /* object for properties */ 189 uint64_t spa_bootfs; /* default boot filesystem */ 190 uint64_t spa_failmode; /* failure mode for the pool */ 191 uint64_t spa_delegation; /* delegation on/off */ 192 list_t spa_config_list; /* previous cache file(s) */ 193 zio_t *spa_async_zio_root; /* root of all async I/O */ 194 zio_t *spa_suspend_zio_root; /* root of all suspended I/O */ 195 kmutex_t spa_suspend_lock; /* protects suspend_zio_root */ 196 kcondvar_t spa_suspend_cv; /* notification of resume */ 197 uint8_t spa_suspended; /* pool is suspended */ 198 uint8_t spa_claiming; /* pool is doing zil_claim() */ 199 boolean_t spa_is_root; /* pool is root */ 200 int spa_minref; /* num refs when first opened */ 201 int spa_mode; /* FREAD | FWRITE */ 202 spa_log_state_t spa_log_state; /* log state */ 203 uint64_t spa_autoexpand; /* lun expansion on/off */ 204 ddt_t *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */ 205 uint64_t spa_ddt_stat_object; /* DDT statistics */ 206 uint64_t spa_dedup_ditto; /* dedup ditto threshold */ 207 uint64_t spa_dedup_checksum; /* default dedup checksum */ 208 uint64_t spa_dspace; /* dspace in normal class */ 209 kmutex_t spa_vdev_top_lock; /* dueling offline/remove */ 210 kmutex_t spa_proc_lock; /* protects spa_proc* */ 211 kcondvar_t spa_proc_cv; /* spa_proc_state transitions */ 212 spa_proc_state_t spa_proc_state; /* see definition */ 213 struct proc *spa_proc; /* "zpool-poolname" process */ 214 uint64_t spa_did; /* if procp != p0, did of t1 */ 215 boolean_t spa_autoreplace; /* autoreplace set in open */ 216 int spa_vdev_locks; /* locks grabbed */ 217 uint64_t spa_creation_version; /* version at pool creation */ 218 uint64_t spa_prev_software_version; 219 /* 220 * spa_refcnt & spa_config_lock must be the last elements 221 * because refcount_t changes size based on compilation options. 222 * In order for the MDB module to function correctly, the other 223 * fields must remain in the same location. 224 */ 225 spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */ 226 refcount_t spa_refcount; /* number of opens */ 227 }; 228 229 extern const char *spa_config_path; 230 231 #ifdef __cplusplus 232 } 233 #endif 234 235 #endif /* _SYS_SPA_IMPL_H */ 236