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Diffstat (limited to 'include/sys/spa_impl.h')
| -rw-r--r-- | include/sys/spa_impl.h | 458 |
1 files changed, 458 insertions, 0 deletions
diff --git a/include/sys/spa_impl.h b/include/sys/spa_impl.h new file mode 100644 index 0000000000000..69de75fb6d3f8 --- /dev/null +++ b/include/sys/spa_impl.h @@ -0,0 +1,458 @@ +/* + * 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2011, 2019 by Delphix. All rights reserved. + * Copyright 2011 Nexenta Systems, Inc. All rights reserved. + * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. + * Copyright 2013 Saso Kiselkov. All rights reserved. + * Copyright (c) 2016 Actifio, Inc. All rights reserved. + * Copyright (c) 2017 Datto Inc. + * Copyright (c) 2017, Intel Corporation. + */ + +#ifndef _SYS_SPA_IMPL_H +#define _SYS_SPA_IMPL_H + +#include <sys/spa.h> +#include <sys/spa_checkpoint.h> +#include <sys/spa_log_spacemap.h> +#include <sys/vdev.h> +#include <sys/vdev_rebuild.h> +#include <sys/vdev_removal.h> +#include <sys/metaslab.h> +#include <sys/dmu.h> +#include <sys/dsl_pool.h> +#include <sys/uberblock_impl.h> +#include <sys/zfs_context.h> +#include <sys/avl.h> +#include <sys/zfs_refcount.h> +#include <sys/bplist.h> +#include <sys/bpobj.h> +#include <sys/dsl_crypt.h> +#include <sys/zfeature.h> +#include <sys/zthr.h> +#include <sys/dsl_deadlist.h> +#include <zfeature_common.h> + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct spa_error_entry { + zbookmark_phys_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; + +/* + * All members must be uint64_t, for byteswap purposes. + */ +typedef struct spa_removing_phys { + uint64_t sr_state; /* dsl_scan_state_t */ + + /* + * The vdev ID that we most recently attempted to remove, + * or -1 if no removal has been attempted. + */ + uint64_t sr_removing_vdev; + + /* + * The vdev ID that we most recently successfully removed, + * or -1 if no devices have been removed. + */ + uint64_t sr_prev_indirect_vdev; + + uint64_t sr_start_time; + uint64_t sr_end_time; + + /* + * Note that we can not use the space map's or indirect mapping's + * accounting as a substitute for these values, because we need to + * count frees of not-yet-copied data as though it did the copy. + * Otherwise, we could get into a situation where copied > to_copy, + * or we complete before copied == to_copy. + */ + uint64_t sr_to_copy; /* bytes that need to be copied */ + uint64_t sr_copied; /* bytes that have been copied or freed */ +} spa_removing_phys_t; + +/* + * This struct is stored as an entry in the DMU_POOL_DIRECTORY_OBJECT + * (with key DMU_POOL_CONDENSING_INDIRECT). It is present if a condense + * of an indirect vdev's mapping object is in progress. + */ +typedef struct spa_condensing_indirect_phys { + /* + * The vdev ID of the indirect vdev whose indirect mapping is + * being condensed. + */ + uint64_t scip_vdev; + + /* + * The vdev's old obsolete spacemap. This spacemap's contents are + * being integrated into the new mapping. + */ + uint64_t scip_prev_obsolete_sm_object; + + /* + * The new mapping object that is being created. + */ + uint64_t scip_next_mapping_object; +} spa_condensing_indirect_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; + int scl_write_wanted; + kcondvar_t scl_cv; + zfs_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; + +typedef enum zio_taskq_type { + ZIO_TASKQ_ISSUE = 0, + ZIO_TASKQ_ISSUE_HIGH, + ZIO_TASKQ_INTERRUPT, + ZIO_TASKQ_INTERRUPT_HIGH, + ZIO_TASKQ_TYPES +} zio_taskq_type_t; + +/* + * State machine for the zpool-poolname process. The states transitions + * are done as follows: + * + * From To Routine + * PROC_NONE -> PROC_CREATED spa_activate() + * PROC_CREATED -> PROC_ACTIVE spa_thread() + * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate() + * PROC_DEACTIVATE -> PROC_GONE spa_thread() + * PROC_GONE -> PROC_NONE spa_deactivate() + */ +typedef enum spa_proc_state { + SPA_PROC_NONE, /* spa_proc = &p0, no process created */ + SPA_PROC_CREATED, /* spa_activate() has proc, is waiting */ + SPA_PROC_ACTIVE, /* taskqs created, spa_proc set */ + SPA_PROC_DEACTIVATE, /* spa_deactivate() requests process exit */ + SPA_PROC_GONE /* spa_thread() is exiting, spa_proc = &p0 */ +} spa_proc_state_t; + +typedef struct spa_taskqs { + uint_t stqs_count; + taskq_t **stqs_taskq; +} spa_taskqs_t; + +typedef enum spa_all_vdev_zap_action { + AVZ_ACTION_NONE = 0, + AVZ_ACTION_DESTROY, /* Destroy all per-vdev ZAPs and the AVZ. */ + AVZ_ACTION_REBUILD, /* Populate the new AVZ, see spa_avz_rebuild */ + AVZ_ACTION_INITIALIZE +} spa_avz_action_t; + +typedef enum spa_config_source { + SPA_CONFIG_SRC_NONE = 0, + SPA_CONFIG_SRC_SCAN, /* scan of path (default: /dev/dsk) */ + SPA_CONFIG_SRC_CACHEFILE, /* any cachefile */ + SPA_CONFIG_SRC_TRYIMPORT, /* returned from call to tryimport */ + SPA_CONFIG_SRC_SPLIT, /* new pool in a pool split */ + SPA_CONFIG_SRC_MOS /* MOS, but not always from right txg */ +} spa_config_source_t; + +struct spa { + /* + * Fields protected by spa_namespace_lock. + */ + char spa_name[ZFS_MAX_DATASET_NAME_LEN]; /* pool name */ + char *spa_comment; /* comment */ + 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 */ + nvlist_t *spa_config_splitting; /* config for splitting */ + nvlist_t *spa_load_info; /* info and errors from load */ + uint64_t spa_config_txg; /* txg of last config change */ + int spa_sync_pass; /* iterate-to-convergence */ + pool_state_t spa_state; /* pool state */ + int spa_inject_ref; /* injection references */ + uint8_t spa_sync_on; /* sync threads are running */ + spa_load_state_t spa_load_state; /* current load operation */ + boolean_t spa_indirect_vdevs_loaded; /* mappings loaded? */ + boolean_t spa_trust_config; /* do we trust vdev tree? */ + boolean_t spa_is_splitting; /* in the middle of a split? */ + spa_config_source_t spa_config_source; /* where config comes from? */ + uint64_t spa_import_flags; /* import specific flags */ + spa_taskqs_t spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES]; + dsl_pool_t *spa_dsl_pool; + boolean_t spa_is_initializing; /* true while opening pool */ + boolean_t spa_is_exporting; /* true while exporting pool */ + metaslab_class_t *spa_normal_class; /* normal data class */ + metaslab_class_t *spa_log_class; /* intent log data class */ + metaslab_class_t *spa_special_class; /* special allocation class */ + metaslab_class_t *spa_dedup_class; /* dedup allocation 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 */ + uint64_t spa_load_max_txg; /* best initial ub_txg */ + uint64_t spa_claim_max_txg; /* highest claimed birth txg */ + inode_timespec_t spa_loaded_ts; /* 1st successful open time */ + objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */ + kmutex_t spa_evicting_os_lock; /* Evicting objset list lock */ + list_t spa_evicting_os_list; /* Objsets being evicted. */ + kcondvar_t spa_evicting_os_cv; /* Objset Eviction Completion */ + txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */ + vdev_t *spa_root_vdev; /* top-level vdev container */ + int spa_min_ashift; /* of vdevs in normal class */ + int spa_max_ashift; /* of vdevs in normal class */ + uint64_t spa_config_guid; /* config pool guid */ + uint64_t spa_load_guid; /* spa_load initialized guid */ + uint64_t spa_last_synced_guid; /* last synced guid */ + list_t spa_config_dirty_list; /* vdevs with dirty config */ + list_t spa_state_dirty_list; /* vdevs with dirty state */ + /* + * spa_alloc_locks and spa_alloc_trees are arrays, whose lengths are + * stored in spa_alloc_count. There is one tree and one lock for each + * allocator, to help improve allocation performance in write-heavy + * workloads. + */ + kmutex_t *spa_alloc_locks; + avl_tree_t *spa_alloc_trees; + int spa_alloc_count; + + spa_aux_vdev_t spa_spares; /* hot spares */ + spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */ + nvlist_t *spa_label_features; /* Features for reading MOS */ + uint64_t spa_config_object; /* MOS object for pool config */ + uint64_t spa_config_generation; /* config generation number */ + uint64_t spa_syncing_txg; /* txg currently syncing */ + bpobj_t spa_deferred_bpobj; /* deferred-free bplist */ + bplist_t spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */ + zio_cksum_salt_t spa_cksum_salt; /* secret salt for cksum */ + /* checksum context templates */ + kmutex_t spa_cksum_tmpls_lock; + void *spa_cksum_tmpls[ZIO_CHECKSUM_FUNCTIONS]; + uberblock_t spa_ubsync; /* last synced uberblock */ + uberblock_t spa_uberblock; /* current uberblock */ + boolean_t spa_extreme_rewind; /* rewind past deferred frees */ + kmutex_t spa_scrub_lock; /* resilver/scrub lock */ + uint64_t spa_scrub_inflight; /* in-flight scrub bytes */ + + /* in-flight verification bytes */ + uint64_t spa_load_verify_bytes; + kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */ + 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 */ + uint8_t spa_scrub_started; /* started since last boot */ + uint8_t spa_scrub_reopen; /* scrub doing vdev_reopen */ + uint64_t spa_scan_pass_start; /* start time per pass/reboot */ + uint64_t spa_scan_pass_scrub_pause; /* scrub pause time */ + uint64_t spa_scan_pass_scrub_spent_paused; /* total paused */ + uint64_t spa_scan_pass_exam; /* examined bytes per pass */ + uint64_t spa_scan_pass_issued; /* issued bytes per pass */ + + /* + * We are in the middle of a resilver, and another resilver + * is needed once this one completes. This is set iff any + * vdev_resilver_deferred is set. + */ + boolean_t spa_resilver_deferred; + 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 */ + uint64_t spa_missing_tvds; /* unopenable tvds on load */ + uint64_t spa_missing_tvds_allowed; /* allow loading spa? */ + + spa_removing_phys_t spa_removing_phys; + spa_vdev_removal_t *spa_vdev_removal; + + spa_condensing_indirect_phys_t spa_condensing_indirect_phys; + spa_condensing_indirect_t *spa_condensing_indirect; + zthr_t *spa_condense_zthr; /* zthr doing condense. */ + + uint64_t spa_checkpoint_txg; /* the txg of the checkpoint */ + spa_checkpoint_info_t spa_checkpoint_info; /* checkpoint accounting */ + zthr_t *spa_checkpoint_discard_zthr; + + space_map_t *spa_syncing_log_sm; /* current log space map */ + avl_tree_t spa_sm_logs_by_txg; + kmutex_t spa_flushed_ms_lock; /* for metaslabs_by_flushed */ + avl_tree_t spa_metaslabs_by_flushed; + spa_unflushed_stats_t spa_unflushed_stats; + list_t spa_log_summary; + uint64_t spa_log_flushall_txg; + + zthr_t *spa_livelist_delete_zthr; /* deleting livelists */ + zthr_t *spa_livelist_condense_zthr; /* condensing livelists */ + uint64_t spa_livelists_to_delete; /* set of livelists to free */ + livelist_condense_entry_t spa_to_condense; /* next to condense */ + + char *spa_root; /* alternate root directory */ + uint64_t spa_ena; /* spa-wide ereport ENA */ + int spa_last_open_failed; /* error if last open failed */ + uint64_t spa_last_ubsync_txg; /* "best" uberblock txg */ + uint64_t spa_last_ubsync_txg_ts; /* timestamp from that ub */ + uint64_t spa_load_txg; /* ub txg that loaded */ + uint64_t spa_load_txg_ts; /* timestamp from that ub */ + uint64_t spa_load_meta_errors; /* verify metadata err count */ + uint64_t spa_load_data_errors; /* verify data err count */ + uint64_t spa_verify_min_txg; /* start txg of verify scrub */ + 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 */ + uint64_t spa_failmode; /* failure mode for the pool */ + uint64_t spa_deadman_failmode; /* failure mode for deadman */ + uint64_t spa_delegation; /* delegation on/off */ + list_t spa_config_list; /* previous cache file(s) */ + /* per-CPU array of root of async I/O: */ + zio_t **spa_async_zio_root; + zio_t *spa_suspend_zio_root; /* root of all suspended I/O */ + zio_t *spa_txg_zio[TXG_SIZE]; /* spa_sync() waits for this */ + kmutex_t spa_suspend_lock; /* protects suspend_zio_root */ + kcondvar_t spa_suspend_cv; /* notification of resume */ + zio_suspend_reason_t spa_suspended; /* pool is suspended */ + uint8_t spa_claiming; /* pool is doing zil_claim() */ + boolean_t spa_is_root; /* pool is root */ + int spa_minref; /* num refs when first opened */ + spa_mode_t spa_mode; /* SPA_MODE_{READ|WRITE} */ + spa_log_state_t spa_log_state; /* log state */ + uint64_t spa_autoexpand; /* lun expansion on/off */ + ddt_t *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */ + uint64_t spa_ddt_stat_object; /* DDT statistics */ + uint64_t spa_dedup_dspace; /* Cache get_dedup_dspace() */ + uint64_t spa_dedup_checksum; /* default dedup checksum */ + uint64_t spa_dspace; /* dspace in normal class */ + kmutex_t spa_vdev_top_lock; /* dueling offline/remove */ + kmutex_t spa_proc_lock; /* protects spa_proc* */ + kcondvar_t spa_proc_cv; /* spa_proc_state transitions */ + spa_proc_state_t spa_proc_state; /* see definition */ + proc_t *spa_proc; /* "zpool-poolname" process */ + uint64_t spa_did; /* if procp != p0, did of t1 */ + boolean_t spa_autoreplace; /* autoreplace set in open */ + int spa_vdev_locks; /* locks grabbed */ + uint64_t spa_creation_version; /* version at pool creation */ + uint64_t spa_prev_software_version; /* See ub_software_version */ + uint64_t spa_feat_for_write_obj; /* required to write to pool */ + uint64_t spa_feat_for_read_obj; /* required to read from pool */ + uint64_t spa_feat_desc_obj; /* Feature descriptions */ + uint64_t spa_feat_enabled_txg_obj; /* Feature enabled txg */ + kmutex_t spa_feat_stats_lock; /* protects spa_feat_stats */ + nvlist_t *spa_feat_stats; /* Cache of enabled features */ + /* cache feature refcounts */ + uint64_t spa_feat_refcount_cache[SPA_FEATURES]; + taskqid_t spa_deadman_tqid; /* Task id */ + uint64_t spa_deadman_calls; /* number of deadman calls */ + hrtime_t spa_sync_starttime; /* starting time of spa_sync */ + uint64_t spa_deadman_synctime; /* deadman sync expiration */ + uint64_t spa_deadman_ziotime; /* deadman zio expiration */ + uint64_t spa_all_vdev_zaps; /* ZAP of per-vd ZAP obj #s */ + spa_avz_action_t spa_avz_action; /* destroy/rebuild AVZ? */ + uint64_t spa_autotrim; /* automatic background trim? */ + uint64_t spa_errata; /* errata issues detected */ + spa_stats_t spa_stats; /* assorted spa statistics */ + spa_keystore_t spa_keystore; /* loaded crypto keys */ + + /* arc_memory_throttle() parameters during low memory condition */ + uint64_t spa_lowmem_page_load; /* memory load during txg */ + uint64_t spa_lowmem_last_txg; /* txg window start */ + + hrtime_t spa_ccw_fail_time; /* Conf cache write fail time */ + taskq_t *spa_zvol_taskq; /* Taskq for minor management */ + taskq_t *spa_prefetch_taskq; /* Taskq for prefetch threads */ + uint64_t spa_multihost; /* multihost aware (mmp) */ + mmp_thread_t spa_mmp; /* multihost mmp thread */ + list_t spa_leaf_list; /* list of leaf vdevs */ + uint64_t spa_leaf_list_gen; /* track leaf_list changes */ + uint32_t spa_hostid; /* cached system hostid */ + + /* synchronization for threads in spa_wait */ + kmutex_t spa_activities_lock; + kcondvar_t spa_activities_cv; + kcondvar_t spa_waiters_cv; + int spa_waiters; /* number of waiting threads */ + boolean_t spa_waiters_cancel; /* waiters should return */ + + /* + * spa_refcount & spa_config_lock must be the last elements + * because zfs_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[SCL_LOCKS]; /* config changes */ + zfs_refcount_t spa_refcount; /* number of opens */ + + taskq_t *spa_upgrade_taskq; /* taskq for upgrade jobs */ +}; + +extern char *spa_config_path; +extern char *zfs_deadman_failmode; +extern int spa_slop_shift; +extern void spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q, + task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent); +extern void spa_taskq_dispatch_sync(spa_t *, zio_type_t t, zio_taskq_type_t q, + task_func_t *func, void *arg, uint_t flags); +extern void spa_load_spares(spa_t *spa); +extern void spa_load_l2cache(spa_t *spa); +extern sysevent_t *spa_event_create(spa_t *spa, vdev_t *vd, nvlist_t *hist_nvl, + const char *name); +extern void spa_event_post(sysevent_t *ev); +extern int param_set_deadman_failmode_common(const char *val); +extern void spa_set_deadman_synctime(hrtime_t ns); +extern void spa_set_deadman_ziotime(hrtime_t ns); +extern const char *spa_history_zone(void); + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_SPA_IMPL_H */ |