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.
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.
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]
22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 #ifndef _SYS_ZIL_IMPL_H
27 #define _SYS_ZIL_IMPL_H
30 #include <sys/dmu_objset.h>
40 zilog_t *lwb_zilog; /* back pointer to log struct */
41 blkptr_t lwb_blk; /* on disk address of this log blk */
42 int lwb_nused; /* # used bytes in buffer */
43 int lwb_sz; /* size of block and buffer */
44 char *lwb_buf; /* log write buffer */
45 zio_t *lwb_zio; /* zio for this buffer */
46 uint64_t lwb_max_txg; /* highest txg in this lwb */
47 txg_handle_t lwb_txgh; /* txg handle for txg_exit() */
48 list_node_t lwb_node; /* zilog->zl_lwb_list linkage */
52 * Vdev flushing: during a zil_commit(), we build up an AVL tree of the vdevs
53 * we've touched so we know which ones need a write cache flush at the end.
55 typedef struct zil_vdev_node {
56 uint64_t zv_vdev; /* vdev to be flushed */
57 avl_node_t zv_node; /* AVL tree linkage */
61 * Stable storage intent log management structure. One per dataset.
64 kmutex_t zl_lock; /* protects most zilog_t fields */
65 struct dsl_pool *zl_dmu_pool; /* DSL pool */
66 spa_t *zl_spa; /* handle for read/write log */
67 const zil_header_t *zl_header; /* log header buffer */
68 objset_t *zl_os; /* object set we're logging */
69 zil_get_data_t *zl_get_data; /* callback to get object content */
70 zio_t *zl_root_zio; /* log writer root zio */
71 uint64_t zl_itx_seq; /* next itx sequence number */
72 uint64_t zl_commit_seq; /* committed upto this number */
73 uint64_t zl_lr_seq; /* log record sequence number */
74 uint64_t zl_destroy_txg; /* txg of last zil_destroy() */
75 uint64_t zl_replayed_seq[TXG_SIZE]; /* last replayed rec seq */
76 uint64_t zl_replaying_seq; /* current replay seq number */
77 uint32_t zl_suspend; /* log suspend count */
78 kcondvar_t zl_cv_writer; /* log writer thread completion */
79 kcondvar_t zl_cv_suspend; /* log suspend completion */
80 uint8_t zl_suspending; /* log is currently suspending */
81 uint8_t zl_keep_first; /* keep first log block in destroy */
82 uint8_t zl_replay; /* replaying records while set */
83 uint8_t zl_stop_sync; /* for debugging */
84 uint8_t zl_writer; /* boolean: write setup in progress */
85 uint8_t zl_log_error; /* boolean: log write error */
86 list_t zl_itx_list; /* in-memory itx list */
87 uint64_t zl_itx_list_sz; /* total size of records on list */
88 uint64_t zl_cur_used; /* current commit log size used */
89 uint64_t zl_prev_used; /* previous commit log size used */
90 list_t zl_lwb_list; /* in-flight log write list */
91 kmutex_t zl_vdev_lock; /* protects zl_vdev_tree */
92 avl_tree_t zl_vdev_tree; /* vdevs to flush in zil_commit() */
93 taskq_t *zl_clean_taskq; /* runs lwb and itx clean tasks */
94 avl_tree_t zl_dva_tree; /* track DVAs during log parse */
95 clock_t zl_replay_time; /* lbolt of when replay started */
96 uint64_t zl_replay_blks; /* number of log blocks replayed */
99 typedef struct zil_dva_node {
108 #endif /* _SYS_ZIL_IMPL_H */