android/android_kernel_asus_sm8350
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xfs: add log recovery tracepoint for head/tail

Browse Source 
Torn write detection and tail overwrite detection can shift the log
head and tail respectively in the event of CRC mismatch or
corruption errors. Add a high-level log recovery tracepoint to dump
the final log head/tail and make those values easily attainable in
debug/diagnostic situations.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Brian Foster 2017-08-08 18:21:53 -07:00 committed by Darrick J. Wong
parent a4c9b34d6a
commit e67d3d4246
2 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/xfs/xfs_log_recover.c
View File

@ -5598,6 +5598,8 @@ xlog_do_recover(
xfs_buf_t *bp;
xfs_sb_t *sbp;
trace_xfs_log_recover(log, head_blk, tail_blk);
/*
* First replay the images in the log.
*/

18
fs/xfs/xfs_trace.h
View File

@ -1963,6 +1963,24 @@ DEFINE_EVENT(xfs_swap_extent_class, name, \
DEFINE_SWAPEXT_EVENT(xfs_swap_extent_before);
DEFINE_SWAPEXT_EVENT(xfs_swap_extent_after);
TRACE_EVENT(xfs_log_recover,
TP_PROTO(struct xlog *log, xfs_daddr_t headblk, xfs_daddr_t tailblk),
TP_ARGS(log, headblk, tailblk),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_daddr_t, headblk)
__field(xfs_daddr_t, tailblk)
),
TP_fast_assign(
__entry->dev = log->l_mp->m_super->s_dev;
__entry->headblk = headblk;
__entry->tailblk = tailblk;
),
TP_printk("dev %d:%d headblk 0x%llx tailblk 0x%llx",
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->headblk,
__entry->tailblk)
)
TRACE_EVENT(xfs_log_recover_record,
TP_PROTO(struct xlog *log, struct xlog_rec_header *rhead, int pass),
TP_ARGS(log, rhead, pass),