* CDDL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
*/
+/* Portions Copyright 2010 Robert Milkowski */
+
#ifndef _SYS_ZIL_IMPL_H
#define _SYS_ZIL_IMPL_H
int lwb_sz; /* size of block and buffer */
char *lwb_buf; /* log write buffer */
zio_t *lwb_zio; /* zio for this buffer */
+ dmu_tx_t *lwb_tx; /* tx for log block allocation */
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;
/*
+ * Intent log transaction lists
+ */
+typedef struct itxs {
+ list_t i_sync_list; /* list of synchronous itxs */
+ avl_tree_t i_async_tree; /* tree of foids for async itxs */
+} itxs_t;
+
+typedef struct itxg {
+ kmutex_t itxg_lock; /* lock for this structure */
+ uint64_t itxg_txg; /* txg for this chain */
+ uint64_t itxg_sod; /* total size on disk for this txg */
+ itxs_t *itxg_itxs; /* sync and async itxs */
+} itxg_t;
+
+/* for async nodes we build up an AVL tree of lists of async itxs per file */
+typedef struct itx_async_node {
+ uint64_t ia_foid; /* file object id */
+ list_t ia_list; /* list of async itxs for this foid */
+ avl_node_t ia_node; /* AVL tree linkage */
+} itx_async_node_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.
*/
avl_node_t zv_node; /* AVL tree linkage */
} zil_vdev_node_t;
+#define ZIL_PREV_BLKS 16
+
/*
* Stable storage intent log management structure. One per dataset.
*/
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_lr_seq; /* on-disk log record sequence number */
+ uint64_t zl_commit_lr_seq; /* last committed on-disk lr seq */
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 */
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 */
+ uint8_t zl_logbias; /* latency or throughput */
+ uint8_t zl_sync; /* synchronous or asynchronous */
+ int zl_parse_error; /* last zil_parse() error */
+ uint64_t zl_parse_blk_seq; /* highest blk seq on last parse */
+ uint64_t zl_parse_lr_seq; /* highest lr seq on last parse */
+ uint64_t zl_parse_blk_count; /* number of blocks parsed */
+ uint64_t zl_parse_lr_count; /* number of log records parsed */
+ uint64_t zl_next_batch; /* next batch number */
+ uint64_t zl_com_batch; /* committed batch number */
+ kcondvar_t zl_cv_batch[2]; /* batch condition variables */
+ itxg_t zl_itxg[TXG_SIZE]; /* intent log txg chains */
+ list_t zl_itx_commit_list; /* itx list to be committed */
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 */
+ avl_tree_t zl_bp_tree; /* track bps during log parse */
clock_t zl_replay_time; /* lbolt of when replay started */
uint64_t zl_replay_blks; /* number of log blocks replayed */
+ zil_header_t zl_old_header; /* debugging aid */
+ uint_t zl_prev_blks[ZIL_PREV_BLKS]; /* size - sector rounded */
+ uint_t zl_prev_rotor; /* rotor for zl_prev[] */
};
-typedef struct zil_dva_node {
+typedef struct zil_bp_node {
dva_t zn_dva;
avl_node_t zn_node;
-} zil_dva_node_t;
+} zil_bp_node_t;
+
+#define ZIL_MAX_LOG_DATA (SPA_MAXBLOCKSIZE - sizeof (zil_chain_t) - \
+ sizeof (lr_write_t))
#ifdef __cplusplus
}