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xfs: remove XLOG_STATE_IOABORT

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This value is the only flag in ic_state, which we otherwise use as
a state.  Switch it to a new debug-only field and also report and
actual error in the buffer in the I/O completion path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@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:
Christoph Hellwig 2019-06-28 19:27:21 -07:00 committed by Darrick J. Wong
parent 9bff313253
commit 366fc4b898
2 changed files with 15 additions and 11 deletions
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22
fs/xfs/xfs_log.c
View File

@ -1257,16 +1257,16 @@ xlog_iodone(xfs_buf_t *bp)
struct xlog *l = iclog->ic_log;
int aborted = 0;
/*
* Race to shutdown the filesystem if we see an error or the iclog is in
* IOABORT state. The IOABORT state is only set in DEBUG mode to inject
* CRC errors into log recovery.
*/
if (XFS_TEST_ERROR(bp->b_error, l->l_mp, XFS_ERRTAG_IODONE_IOERR) ||
iclog->ic_state & XLOG_STATE_IOABORT) {
if (iclog->ic_state & XLOG_STATE_IOABORT)
iclog->ic_state &= ~XLOG_STATE_IOABORT;
#ifdef DEBUG
/* treat writes with injected CRC errors as failed */
if (iclog->ic_fail_crc)
bp->b_error = -EIO;
#endif
/*
* Race to shutdown the filesystem if we see an error.
*/
if (XFS_TEST_ERROR(bp->b_error, l->l_mp, XFS_ERRTAG_IODONE_IOERR)) {
xfs_buf_ioerror_alert(bp, __func__);
xfs_buf_stale(bp);
xfs_force_shutdown(l->l_mp, SHUTDOWN_LOG_IO_ERROR);
@ -1881,13 +1881,15 @@ xlog_sync(
* write on I/O completion and shutdown the fs. The subsequent mount
* detects the bad CRC and attempts to recover.
*/
#ifdef DEBUG
if (XFS_TEST_ERROR(false, log->l_mp, XFS_ERRTAG_LOG_BAD_CRC)) {
iclog->ic_header.h_crc &= cpu_to_le32(0xAAAAAAAA);
iclog->ic_state |= XLOG_STATE_IOABORT;
iclog->ic_fail_crc = true;
xfs_warn(log->l_mp,
"Intentionally corrupted log record at LSN 0x%llx. Shutdown imminent.",
be64_to_cpu(iclog->ic_header.h_lsn));
}
#endif
bp->b_io_length = BTOBB(count);
bp->b_log_item = iclog;

4
fs/xfs/xfs_log_priv.h
View File

@ -50,7 +50,6 @@ static inline uint xlog_get_client_id(__be32 i)
#define XLOG_STATE_CALLBACK 0x0020 /* Callback functions now */
#define XLOG_STATE_DIRTY 0x0040 /* Dirty IC log, not ready for ACTIVE status*/
#define XLOG_STATE_IOERROR 0x0080 /* IO error happened in sync'ing log */
#define XLOG_STATE_IOABORT 0x0100 /* force abort on I/O completion (debug) */
#define XLOG_STATE_ALL 0x7FFF /* All possible valid flags */
#define XLOG_STATE_NOTUSED 0x8000 /* This IC log not being used */
@ -223,6 +222,9 @@ typedef struct xlog_in_core {
atomic_t ic_refcnt ____cacheline_aligned_in_smp;
xlog_in_core_2_t *ic_data;
#define ic_header ic_data->hic_header
#ifdef DEBUG
bool ic_fail_crc : 1;
#endif
} xlog_in_core_t;
/*