c13060e478
torvalds/linux@59b57717f ("blkcg: delay blkg destruction until after writeback has finished") added a refcount_t to the blkcg structure. Due to the refcount_t compatibility code, zfs_refcount_t was used by mistake. Resolve this by removing the compatibility code and replacing the occurrences of refcount_t with zfs_refcount_t. Reviewed-by: Franz Pletz <fpletz@fnordicwalking.de> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tim Schumacher <timschumi@gmx.de> Closes #7885 Closes #7932
418 lines
16 KiB
C
418 lines
16 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2011, 2018 by Delphix. All rights reserved.
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* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
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* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
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* Copyright 2013 Saso Kiselkov. All rights reserved.
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* Copyright (c) 2016 Actifio, Inc. All rights reserved.
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* Copyright (c) 2017 Datto Inc.
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* Copyright (c) 2017, Intel Corporation.
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*/
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#ifndef _SYS_SPA_IMPL_H
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#define _SYS_SPA_IMPL_H
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#include <sys/spa.h>
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#include <sys/spa_checkpoint.h>
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#include <sys/vdev.h>
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#include <sys/vdev_removal.h>
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#include <sys/metaslab.h>
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#include <sys/dmu.h>
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#include <sys/dsl_pool.h>
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#include <sys/uberblock_impl.h>
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#include <sys/zfs_context.h>
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#include <sys/avl.h>
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#include <sys/refcount.h>
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#include <sys/bplist.h>
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#include <sys/bpobj.h>
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#include <sys/dsl_crypt.h>
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#include <sys/zfeature.h>
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#include <sys/zthr.h>
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#include <zfeature_common.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct spa_error_entry {
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zbookmark_phys_t se_bookmark;
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char *se_name;
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avl_node_t se_avl;
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} spa_error_entry_t;
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typedef struct spa_history_phys {
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uint64_t sh_pool_create_len; /* ending offset of zpool create */
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uint64_t sh_phys_max_off; /* physical EOF */
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uint64_t sh_bof; /* logical BOF */
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uint64_t sh_eof; /* logical EOF */
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uint64_t sh_records_lost; /* num of records overwritten */
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} spa_history_phys_t;
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/*
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* All members must be uint64_t, for byteswap purposes.
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*/
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typedef struct spa_removing_phys {
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uint64_t sr_state; /* dsl_scan_state_t */
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/*
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* The vdev ID that we most recently attempted to remove,
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* or -1 if no removal has been attempted.
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*/
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uint64_t sr_removing_vdev;
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/*
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* The vdev ID that we most recently successfully removed,
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* or -1 if no devices have been removed.
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*/
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uint64_t sr_prev_indirect_vdev;
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uint64_t sr_start_time;
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uint64_t sr_end_time;
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/*
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* Note that we can not use the space map's or indirect mapping's
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* accounting as a substitute for these values, because we need to
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* count frees of not-yet-copied data as though it did the copy.
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* Otherwise, we could get into a situation where copied > to_copy,
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* or we complete before copied == to_copy.
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*/
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uint64_t sr_to_copy; /* bytes that need to be copied */
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uint64_t sr_copied; /* bytes that have been copied or freed */
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} spa_removing_phys_t;
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/*
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* This struct is stored as an entry in the DMU_POOL_DIRECTORY_OBJECT
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* (with key DMU_POOL_CONDENSING_INDIRECT). It is present if a condense
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* of an indirect vdev's mapping object is in progress.
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*/
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typedef struct spa_condensing_indirect_phys {
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/*
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* The vdev ID of the indirect vdev whose indirect mapping is
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* being condensed.
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*/
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uint64_t scip_vdev;
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/*
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* The vdev's old obsolete spacemap. This spacemap's contents are
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* being integrated into the new mapping.
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*/
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uint64_t scip_prev_obsolete_sm_object;
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/*
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* The new mapping object that is being created.
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*/
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uint64_t scip_next_mapping_object;
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} spa_condensing_indirect_phys_t;
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struct spa_aux_vdev {
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uint64_t sav_object; /* MOS object for device list */
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nvlist_t *sav_config; /* cached device config */
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vdev_t **sav_vdevs; /* devices */
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int sav_count; /* number devices */
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boolean_t sav_sync; /* sync the device list */
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nvlist_t **sav_pending; /* pending device additions */
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uint_t sav_npending; /* # pending devices */
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};
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typedef struct spa_config_lock {
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kmutex_t scl_lock;
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kthread_t *scl_writer;
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int scl_write_wanted;
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kcondvar_t scl_cv;
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zfs_refcount_t scl_count;
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} spa_config_lock_t;
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typedef struct spa_config_dirent {
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list_node_t scd_link;
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char *scd_path;
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} spa_config_dirent_t;
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typedef enum zio_taskq_type {
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ZIO_TASKQ_ISSUE = 0,
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ZIO_TASKQ_ISSUE_HIGH,
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ZIO_TASKQ_INTERRUPT,
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ZIO_TASKQ_INTERRUPT_HIGH,
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ZIO_TASKQ_TYPES
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} zio_taskq_type_t;
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/*
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* State machine for the zpool-poolname process. The states transitions
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* are done as follows:
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*
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* From To Routine
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* PROC_NONE -> PROC_CREATED spa_activate()
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* PROC_CREATED -> PROC_ACTIVE spa_thread()
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* PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
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* PROC_DEACTIVATE -> PROC_GONE spa_thread()
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* PROC_GONE -> PROC_NONE spa_deactivate()
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*/
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typedef enum spa_proc_state {
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SPA_PROC_NONE, /* spa_proc = &p0, no process created */
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SPA_PROC_CREATED, /* spa_activate() has proc, is waiting */
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SPA_PROC_ACTIVE, /* taskqs created, spa_proc set */
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SPA_PROC_DEACTIVATE, /* spa_deactivate() requests process exit */
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SPA_PROC_GONE /* spa_thread() is exiting, spa_proc = &p0 */
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} spa_proc_state_t;
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typedef struct spa_taskqs {
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uint_t stqs_count;
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taskq_t **stqs_taskq;
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} spa_taskqs_t;
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typedef enum spa_all_vdev_zap_action {
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AVZ_ACTION_NONE = 0,
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AVZ_ACTION_DESTROY, /* Destroy all per-vdev ZAPs and the AVZ. */
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AVZ_ACTION_REBUILD, /* Populate the new AVZ, see spa_avz_rebuild */
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AVZ_ACTION_INITIALIZE
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} spa_avz_action_t;
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typedef enum spa_config_source {
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SPA_CONFIG_SRC_NONE = 0,
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SPA_CONFIG_SRC_SCAN, /* scan of path (default: /dev/dsk) */
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SPA_CONFIG_SRC_CACHEFILE, /* any cachefile */
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SPA_CONFIG_SRC_TRYIMPORT, /* returned from call to tryimport */
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SPA_CONFIG_SRC_SPLIT, /* new pool in a pool split */
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SPA_CONFIG_SRC_MOS /* MOS, but not always from right txg */
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} spa_config_source_t;
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struct spa {
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/*
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* Fields protected by spa_namespace_lock.
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*/
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char spa_name[ZFS_MAX_DATASET_NAME_LEN]; /* pool name */
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char *spa_comment; /* comment */
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avl_node_t spa_avl; /* node in spa_namespace_avl */
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nvlist_t *spa_config; /* last synced config */
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nvlist_t *spa_config_syncing; /* currently syncing config */
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nvlist_t *spa_config_splitting; /* config for splitting */
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nvlist_t *spa_load_info; /* info and errors from load */
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uint64_t spa_config_txg; /* txg of last config change */
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int spa_sync_pass; /* iterate-to-convergence */
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pool_state_t spa_state; /* pool state */
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int spa_inject_ref; /* injection references */
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uint8_t spa_sync_on; /* sync threads are running */
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spa_load_state_t spa_load_state; /* current load operation */
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boolean_t spa_indirect_vdevs_loaded; /* mappings loaded? */
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boolean_t spa_trust_config; /* do we trust vdev tree? */
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spa_config_source_t spa_config_source; /* where config comes from? */
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uint64_t spa_import_flags; /* import specific flags */
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spa_taskqs_t spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
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dsl_pool_t *spa_dsl_pool;
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boolean_t spa_is_initializing; /* true while opening pool */
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metaslab_class_t *spa_normal_class; /* normal data class */
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metaslab_class_t *spa_log_class; /* intent log data class */
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metaslab_class_t *spa_special_class; /* special allocation class */
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metaslab_class_t *spa_dedup_class; /* dedup allocation class */
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uint64_t spa_first_txg; /* first txg after spa_open() */
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uint64_t spa_final_txg; /* txg of export/destroy */
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uint64_t spa_freeze_txg; /* freeze pool at this txg */
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uint64_t spa_load_max_txg; /* best initial ub_txg */
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uint64_t spa_claim_max_txg; /* highest claimed birth txg */
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inode_timespec_t spa_loaded_ts; /* 1st successful open time */
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objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */
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kmutex_t spa_evicting_os_lock; /* Evicting objset list lock */
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list_t spa_evicting_os_list; /* Objsets being evicted. */
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kcondvar_t spa_evicting_os_cv; /* Objset Eviction Completion */
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txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */
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vdev_t *spa_root_vdev; /* top-level vdev container */
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int spa_min_ashift; /* of vdevs in normal class */
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int spa_max_ashift; /* of vdevs in normal class */
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uint64_t spa_config_guid; /* config pool guid */
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uint64_t spa_load_guid; /* spa_load initialized guid */
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uint64_t spa_last_synced_guid; /* last synced guid */
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list_t spa_config_dirty_list; /* vdevs with dirty config */
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list_t spa_state_dirty_list; /* vdevs with dirty state */
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/*
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* spa_alloc_locks and spa_alloc_trees are arrays, whose lengths are
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* stored in spa_alloc_count. There is one tree and one lock for each
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* allocator, to help improve allocation performance in write-heavy
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* workloads.
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*/
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kmutex_t *spa_alloc_locks;
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avl_tree_t *spa_alloc_trees;
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int spa_alloc_count;
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spa_aux_vdev_t spa_spares; /* hot spares */
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spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */
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nvlist_t *spa_label_features; /* Features for reading MOS */
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uint64_t spa_config_object; /* MOS object for pool config */
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uint64_t spa_config_generation; /* config generation number */
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uint64_t spa_syncing_txg; /* txg currently syncing */
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bpobj_t spa_deferred_bpobj; /* deferred-free bplist */
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bplist_t spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
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zio_cksum_salt_t spa_cksum_salt; /* secret salt for cksum */
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/* checksum context templates */
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kmutex_t spa_cksum_tmpls_lock;
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void *spa_cksum_tmpls[ZIO_CHECKSUM_FUNCTIONS];
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uberblock_t spa_ubsync; /* last synced uberblock */
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uberblock_t spa_uberblock; /* current uberblock */
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boolean_t spa_extreme_rewind; /* rewind past deferred frees */
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kmutex_t spa_scrub_lock; /* resilver/scrub lock */
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uint64_t spa_scrub_inflight; /* in-flight scrub bytes */
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uint64_t spa_load_verify_ios; /* in-flight verification IOs */
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kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */
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uint8_t spa_scrub_active; /* active or suspended? */
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uint8_t spa_scrub_type; /* type of scrub we're doing */
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uint8_t spa_scrub_finished; /* indicator to rotate logs */
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uint8_t spa_scrub_started; /* started since last boot */
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uint8_t spa_scrub_reopen; /* scrub doing vdev_reopen */
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uint64_t spa_scan_pass_start; /* start time per pass/reboot */
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uint64_t spa_scan_pass_scrub_pause; /* scrub pause time */
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uint64_t spa_scan_pass_scrub_spent_paused; /* total paused */
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uint64_t spa_scan_pass_exam; /* examined bytes per pass */
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uint64_t spa_scan_pass_issued; /* issued bytes per pass */
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kmutex_t spa_async_lock; /* protect async state */
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kthread_t *spa_async_thread; /* thread doing async task */
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int spa_async_suspended; /* async tasks suspended */
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kcondvar_t spa_async_cv; /* wait for thread_exit() */
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uint16_t spa_async_tasks; /* async task mask */
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uint64_t spa_missing_tvds; /* unopenable tvds on load */
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uint64_t spa_missing_tvds_allowed; /* allow loading spa? */
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spa_removing_phys_t spa_removing_phys;
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spa_vdev_removal_t *spa_vdev_removal;
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spa_condensing_indirect_phys_t spa_condensing_indirect_phys;
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spa_condensing_indirect_t *spa_condensing_indirect;
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zthr_t *spa_condense_zthr; /* zthr doing condense. */
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uint64_t spa_checkpoint_txg; /* the txg of the checkpoint */
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spa_checkpoint_info_t spa_checkpoint_info; /* checkpoint accounting */
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zthr_t *spa_checkpoint_discard_zthr;
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char *spa_root; /* alternate root directory */
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uint64_t spa_ena; /* spa-wide ereport ENA */
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int spa_last_open_failed; /* error if last open failed */
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uint64_t spa_last_ubsync_txg; /* "best" uberblock txg */
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uint64_t spa_last_ubsync_txg_ts; /* timestamp from that ub */
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uint64_t spa_load_txg; /* ub txg that loaded */
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uint64_t spa_load_txg_ts; /* timestamp from that ub */
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uint64_t spa_load_meta_errors; /* verify metadata err count */
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uint64_t spa_load_data_errors; /* verify data err count */
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uint64_t spa_verify_min_txg; /* start txg of verify scrub */
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kmutex_t spa_errlog_lock; /* error log lock */
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uint64_t spa_errlog_last; /* last error log object */
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uint64_t spa_errlog_scrub; /* scrub error log object */
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kmutex_t spa_errlist_lock; /* error list/ereport lock */
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avl_tree_t spa_errlist_last; /* last error list */
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avl_tree_t spa_errlist_scrub; /* scrub error list */
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uint64_t spa_deflate; /* should we deflate? */
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uint64_t spa_history; /* history object */
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kmutex_t spa_history_lock; /* history lock */
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vdev_t *spa_pending_vdev; /* pending vdev additions */
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kmutex_t spa_props_lock; /* property lock */
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uint64_t spa_pool_props_object; /* object for properties */
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uint64_t spa_bootfs; /* default boot filesystem */
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uint64_t spa_failmode; /* failure mode for the pool */
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uint64_t spa_deadman_failmode; /* failure mode for deadman */
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uint64_t spa_delegation; /* delegation on/off */
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list_t spa_config_list; /* previous cache file(s) */
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/* per-CPU array of root of async I/O: */
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zio_t **spa_async_zio_root;
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zio_t *spa_suspend_zio_root; /* root of all suspended I/O */
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zio_t *spa_txg_zio[TXG_SIZE]; /* spa_sync() waits for this */
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kmutex_t spa_suspend_lock; /* protects suspend_zio_root */
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kcondvar_t spa_suspend_cv; /* notification of resume */
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zio_suspend_reason_t spa_suspended; /* pool is suspended */
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uint8_t spa_claiming; /* pool is doing zil_claim() */
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boolean_t spa_is_root; /* pool is root */
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int spa_minref; /* num refs when first opened */
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int spa_mode; /* FREAD | FWRITE */
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spa_log_state_t spa_log_state; /* log state */
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uint64_t spa_autoexpand; /* lun expansion on/off */
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ddt_t *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
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uint64_t spa_ddt_stat_object; /* DDT statistics */
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uint64_t spa_dedup_dspace; /* Cache get_dedup_dspace() */
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uint64_t spa_dedup_ditto; /* dedup ditto threshold */
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uint64_t spa_dedup_checksum; /* default dedup checksum */
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uint64_t spa_dspace; /* dspace in normal class */
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kmutex_t spa_vdev_top_lock; /* dueling offline/remove */
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kmutex_t spa_proc_lock; /* protects spa_proc* */
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kcondvar_t spa_proc_cv; /* spa_proc_state transitions */
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spa_proc_state_t spa_proc_state; /* see definition */
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proc_t *spa_proc; /* "zpool-poolname" process */
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uint64_t spa_did; /* if procp != p0, did of t1 */
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boolean_t spa_autoreplace; /* autoreplace set in open */
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int spa_vdev_locks; /* locks grabbed */
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uint64_t spa_creation_version; /* version at pool creation */
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uint64_t spa_prev_software_version; /* See ub_software_version */
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uint64_t spa_feat_for_write_obj; /* required to write to pool */
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uint64_t spa_feat_for_read_obj; /* required to read from pool */
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uint64_t spa_feat_desc_obj; /* Feature descriptions */
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uint64_t spa_feat_enabled_txg_obj; /* Feature enabled txg */
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kmutex_t spa_feat_stats_lock; /* protects spa_feat_stats */
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nvlist_t *spa_feat_stats; /* Cache of enabled features */
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/* cache feature refcounts */
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uint64_t spa_feat_refcount_cache[SPA_FEATURES];
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taskqid_t spa_deadman_tqid; /* Task id */
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uint64_t spa_deadman_calls; /* number of deadman calls */
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hrtime_t spa_sync_starttime; /* starting time of spa_sync */
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uint64_t spa_deadman_synctime; /* deadman sync expiration */
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uint64_t spa_deadman_ziotime; /* deadman zio expiration */
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uint64_t spa_all_vdev_zaps; /* ZAP of per-vd ZAP obj #s */
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spa_avz_action_t spa_avz_action; /* destroy/rebuild AVZ? */
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uint64_t spa_errata; /* errata issues detected */
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spa_stats_t spa_stats; /* assorted spa statistics */
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spa_keystore_t spa_keystore; /* loaded crypto keys */
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/* arc_memory_throttle() parameters during low memory condition */
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uint64_t spa_lowmem_page_load; /* memory load during txg */
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uint64_t spa_lowmem_last_txg; /* txg window start */
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hrtime_t spa_ccw_fail_time; /* Conf cache write fail time */
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taskq_t *spa_zvol_taskq; /* Taskq for minor management */
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taskq_t *spa_prefetch_taskq; /* Taskq for prefetch threads */
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uint64_t spa_multihost; /* multihost aware (mmp) */
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mmp_thread_t spa_mmp; /* multihost mmp thread */
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/*
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* spa_refcount & spa_config_lock must be the last elements
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* because zfs_refcount_t changes size based on compilation options.
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* In order for the MDB module to function correctly, the other
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* fields must remain in the same location.
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*/
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spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
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zfs_refcount_t spa_refcount; /* number of opens */
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taskq_t *spa_upgrade_taskq; /* taskq for upgrade jobs */
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};
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extern char *spa_config_path;
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extern void spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q,
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task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent);
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extern void spa_taskq_dispatch_sync(spa_t *, zio_type_t t, zio_taskq_type_t q,
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task_func_t *func, void *arg, uint_t flags);
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extern void spa_load_spares(spa_t *spa);
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extern void spa_load_l2cache(spa_t *spa);
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extern sysevent_t *spa_event_create(spa_t *spa, vdev_t *vd, nvlist_t *hist_nvl,
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const char *name);
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extern void spa_event_post(sysevent_t *ev);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_SPA_IMPL_H */
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