/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _SYS_SPA_IMPL_H #define _SYS_SPA_IMPL_H #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif typedef struct spa_error_entry { zbookmark_t se_bookmark; char *se_name; avl_node_t se_avl; } spa_error_entry_t; typedef struct spa_history_phys { uint64_t sh_pool_create_len; /* ending offset of zpool create */ uint64_t sh_phys_max_off; /* physical EOF */ uint64_t sh_bof; /* logical BOF */ uint64_t sh_eof; /* logical EOF */ uint64_t sh_records_lost; /* num of records overwritten */ } spa_history_phys_t; struct spa_aux_vdev { uint64_t sav_object; /* MOS object for device list */ nvlist_t *sav_config; /* cached device config */ vdev_t **sav_vdevs; /* devices */ int sav_count; /* number devices */ boolean_t sav_sync; /* sync the device list */ nvlist_t **sav_pending; /* pending device additions */ uint_t sav_npending; /* # pending devices */ }; typedef struct spa_config_lock { kmutex_t scl_lock; kthread_t *scl_writer; uint16_t scl_write_wanted; kcondvar_t scl_cv; refcount_t scl_count; } spa_config_lock_t; typedef struct spa_config_dirent { list_node_t scd_link; char *scd_path; } spa_config_dirent_t; struct spa { /* * Fields protected by spa_namespace_lock. */ char *spa_name; /* pool name */ avl_node_t spa_avl; /* node in spa_namespace_avl */ nvlist_t *spa_config; /* last synced config */ nvlist_t *spa_config_syncing; /* currently syncing config */ uint64_t spa_config_txg; /* txg of last config change */ kmutex_t spa_config_cache_lock; /* for spa_config RW_READER */ int spa_sync_pass; /* iterate-to-convergence */ int spa_state; /* pool state */ int spa_inject_ref; /* injection references */ uint8_t spa_traverse_wanted; /* traverse lock wanted */ uint8_t spa_sync_on; /* sync threads are running */ spa_load_state_t spa_load_state; /* current load operation */ taskq_t *spa_zio_issue_taskq[ZIO_TYPES]; taskq_t *spa_zio_intr_taskq[ZIO_TYPES]; dsl_pool_t *spa_dsl_pool; metaslab_class_t *spa_normal_class; /* normal data class */ metaslab_class_t *spa_log_class; /* intent log data class */ uint64_t spa_first_txg; /* first txg after spa_open() */ uint64_t spa_final_txg; /* txg of export/destroy */ uint64_t spa_freeze_txg; /* freeze pool at this txg */ objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */ txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */ vdev_t *spa_root_vdev; /* top-level vdev container */ uint64_t spa_load_guid; /* initial guid for spa_load */ list_t spa_dirty_list; /* vdevs with dirty labels */ spa_aux_vdev_t spa_spares; /* hot spares */ spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */ uint64_t spa_config_object; /* MOS object for pool config */ uint64_t spa_syncing_txg; /* txg currently syncing */ uint64_t spa_sync_bplist_obj; /* object for deferred frees */ bplist_t spa_sync_bplist; /* deferred-free bplist */ krwlock_t spa_traverse_lock; /* traverse vs. spa_sync() */ uberblock_t spa_ubsync; /* last synced uberblock */ uberblock_t spa_uberblock; /* current uberblock */ kmutex_t spa_scrub_lock; /* resilver/scrub lock */ kthread_t *spa_scrub_thread; /* scrub/resilver thread */ traverse_handle_t *spa_scrub_th; /* scrub traverse handle */ uint64_t spa_scrub_restart_txg; /* need to restart */ uint64_t spa_scrub_mintxg; /* min txg we'll scrub */ uint64_t spa_scrub_maxtxg; /* max txg we'll scrub */ uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */ uint64_t spa_scrub_maxinflight; /* max in-flight scrub I/Os */ uint64_t spa_scrub_errors; /* scrub I/O error count */ int spa_scrub_suspended; /* tell scrubber to suspend */ kcondvar_t spa_scrub_cv; /* scrub thread state change */ kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */ uint8_t spa_scrub_stop; /* tell scrubber to stop */ uint8_t spa_scrub_active; /* active or suspended? */ uint8_t spa_scrub_type; /* type of scrub we're doing */ uint8_t spa_scrub_finished; /* indicator to rotate logs */ kmutex_t spa_async_lock; /* protect async state */ kthread_t *spa_async_thread; /* thread doing async task */ int spa_async_suspended; /* async tasks suspended */ kcondvar_t spa_async_cv; /* wait for thread_exit() */ uint16_t spa_async_tasks; /* async task mask */ char *spa_root; /* alternate root directory */ kmutex_t spa_uberblock_lock; /* vdev_uberblock_load_done() */ uint64_t spa_ena; /* spa-wide ereport ENA */ boolean_t spa_last_open_failed; /* true if last open faled */ kmutex_t spa_errlog_lock; /* error log lock */ uint64_t spa_errlog_last; /* last error log object */ uint64_t spa_errlog_scrub; /* scrub error log object */ kmutex_t spa_errlist_lock; /* error list/ereport lock */ avl_tree_t spa_errlist_last; /* last error list */ avl_tree_t spa_errlist_scrub; /* scrub error list */ uint64_t spa_deflate; /* should we deflate? */ uint64_t spa_history; /* history object */ kmutex_t spa_history_lock; /* history lock */ vdev_t *spa_pending_vdev; /* pending vdev additions */ kmutex_t spa_props_lock; /* property lock */ uint64_t spa_pool_props_object; /* object for properties */ uint64_t spa_bootfs; /* default boot filesystem */ boolean_t spa_delegation; /* delegation on/off */ list_t spa_config_list; /* previous cache file(s) */ list_t spa_zio_list; /* zio error list */ kcondvar_t spa_zio_cv; /* resume I/O pipeline */ kmutex_t spa_zio_lock; /* zio error lock */ uint8_t spa_failmode; /* failure mode for the pool */ boolean_t spa_import_faulted; /* allow faulted vdevs */ boolean_t spa_is_root; /* pool is root */ /* * spa_refcnt & spa_config_lock must be the last elements * because refcount_t changes size based on compilation options. * In order for the MDB module to function correctly, the other * fields must remain in the same location. */ spa_config_lock_t spa_config_lock; /* configuration changes */ refcount_t spa_refcount; /* number of opens */ }; extern const char *spa_config_path; #define BOOTFS_COMPRESS_VALID(compress) \ ((compress) == ZIO_COMPRESS_LZJB || \ ((compress) == ZIO_COMPRESS_ON && \ ZIO_COMPRESS_ON_VALUE == ZIO_COMPRESS_LZJB) || \ (compress) == ZIO_COMPRESS_OFF) #ifdef __cplusplus } #endif #endif /* _SYS_SPA_IMPL_H */