mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-17 10:01:01 +03:00
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/*
|
|
* 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_ZIL_IMPL_H
|
|
#define _SYS_ZIL_IMPL_H
|
|
|
|
#include <sys/zil.h>
|
|
#include <sys/dmu_objset.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* Log write buffer.
|
|
*/
|
|
typedef struct lwb {
|
|
zilog_t *lwb_zilog; /* back pointer to log struct */
|
|
blkptr_t lwb_blk; /* on disk address of this log blk */
|
|
int lwb_nused; /* # used bytes in buffer */
|
|
int lwb_sz; /* size of block and buffer */
|
|
char *lwb_buf; /* log write buffer */
|
|
zio_t *lwb_zio; /* zio for this buffer */
|
|
uint64_t lwb_max_txg; /* highest txg in this lwb */
|
|
txg_handle_t lwb_txgh; /* txg handle for txg_exit() */
|
|
list_node_t lwb_node; /* zilog->zl_lwb_list linkage */
|
|
} lwb_t;
|
|
|
|
/*
|
|
* Vdev flushing: during a zil_commit(), we build up an AVL tree of the vdevs
|
|
* we've touched so we know which ones need a write cache flush at the end.
|
|
*/
|
|
typedef struct zil_vdev_node {
|
|
uint64_t zv_vdev; /* vdev to be flushed */
|
|
avl_node_t zv_node; /* AVL tree linkage */
|
|
} zil_vdev_node_t;
|
|
|
|
/*
|
|
* Stable storage intent log management structure. One per dataset.
|
|
*/
|
|
struct zilog {
|
|
kmutex_t zl_lock; /* protects most zilog_t fields */
|
|
struct dsl_pool *zl_dmu_pool; /* DSL pool */
|
|
spa_t *zl_spa; /* handle for read/write log */
|
|
const zil_header_t *zl_header; /* log header buffer */
|
|
objset_t *zl_os; /* object set we're logging */
|
|
zil_get_data_t *zl_get_data; /* callback to get object content */
|
|
zio_t *zl_root_zio; /* log writer root zio */
|
|
uint64_t zl_itx_seq; /* next itx sequence number */
|
|
uint64_t zl_commit_seq; /* committed upto this number */
|
|
uint64_t zl_lr_seq; /* log record sequence number */
|
|
uint64_t zl_destroy_txg; /* txg of last zil_destroy() */
|
|
uint64_t zl_replayed_seq[TXG_SIZE]; /* last replayed rec seq */
|
|
uint64_t zl_replaying_seq; /* current replay seq number */
|
|
uint32_t zl_suspend; /* log suspend count */
|
|
kcondvar_t zl_cv_writer; /* log writer thread completion */
|
|
kcondvar_t zl_cv_suspend; /* log suspend completion */
|
|
uint8_t zl_suspending; /* log is currently suspending */
|
|
uint8_t zl_keep_first; /* keep first log block in destroy */
|
|
uint8_t zl_replay; /* replaying records while set */
|
|
uint8_t zl_stop_sync; /* for debugging */
|
|
uint8_t zl_writer; /* boolean: write setup in progress */
|
|
uint8_t zl_log_error; /* boolean: log write error */
|
|
list_t zl_itx_list; /* in-memory itx list */
|
|
uint64_t zl_itx_list_sz; /* total size of records on list */
|
|
uint64_t zl_cur_used; /* current commit log size used */
|
|
uint64_t zl_prev_used; /* previous commit log size used */
|
|
list_t zl_lwb_list; /* in-flight log write list */
|
|
kmutex_t zl_vdev_lock; /* protects zl_vdev_tree */
|
|
avl_tree_t zl_vdev_tree; /* vdevs to flush in zil_commit() */
|
|
taskq_t *zl_clean_taskq; /* runs lwb and itx clean tasks */
|
|
avl_tree_t zl_dva_tree; /* track DVAs during log parse */
|
|
clock_t zl_replay_time; /* lbolt of when replay started */
|
|
uint64_t zl_replay_blks; /* number of log blocks replayed */
|
|
};
|
|
|
|
typedef struct zil_dva_node {
|
|
dva_t zn_dva;
|
|
avl_node_t zn_node;
|
|
} zil_dva_node_t;
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_ZIL_IMPL_H */
|