From: Brian Foster <bfoster@redhat.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH 12/12] xfs: random buffer write failure errortag
Date: Fri, 17 Apr 2020 11:08:59 -0400 [thread overview]
Message-ID: <20200417150859.14734-13-bfoster@redhat.com> (raw)
In-Reply-To: <20200417150859.14734-1-bfoster@redhat.com>
Introduce an error tag to randomly fail async buffer writes. This is
primarily to facilitate testing of the XFS error configuration
mechanism.
Signed-off-by: Brian Foster <bfoster@redhat.com>
---
fs/xfs/libxfs/xfs_errortag.h | 4 +++-
fs/xfs/xfs_buf.c | 6 ++++++
fs/xfs/xfs_error.c | 3 +++
3 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/libxfs/xfs_errortag.h b/fs/xfs/libxfs/xfs_errortag.h
index 79e6c4fb1d8a..2486dab19023 100644
--- a/fs/xfs/libxfs/xfs_errortag.h
+++ b/fs/xfs/libxfs/xfs_errortag.h
@@ -55,7 +55,8 @@
#define XFS_ERRTAG_FORCE_SCRUB_REPAIR 32
#define XFS_ERRTAG_FORCE_SUMMARY_RECALC 33
#define XFS_ERRTAG_IUNLINK_FALLBACK 34
-#define XFS_ERRTAG_MAX 35
+#define XFS_ERRTAG_BUF_IOERROR 35
+#define XFS_ERRTAG_MAX 36
/*
* Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
@@ -95,5 +96,6 @@
#define XFS_RANDOM_FORCE_SCRUB_REPAIR 1
#define XFS_RANDOM_FORCE_SUMMARY_RECALC 1
#define XFS_RANDOM_IUNLINK_FALLBACK (XFS_RANDOM_DEFAULT/10)
+#define XFS_RANDOM_BUF_IOERROR XFS_RANDOM_DEFAULT
#endif /* __XFS_ERRORTAG_H_ */
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 5120fed06075..a305db779156 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1289,6 +1289,12 @@ xfs_buf_bio_end_io(
struct bio *bio)
{
struct xfs_buf *bp = (struct xfs_buf *)bio->bi_private;
+ struct xfs_mount *mp = bp->b_mount;
+
+ if (!bio->bi_status &&
+ (bp->b_flags & XBF_WRITE) && (bp->b_flags & XBF_ASYNC) &&
+ XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BUF_IOERROR))
+ bio->bi_status = errno_to_blk_status(-EIO);
/*
* don't overwrite existing errors - otherwise we can lose errors on
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index a21e9cc6516a..7f6e20899473 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -53,6 +53,7 @@ static unsigned int xfs_errortag_random_default[] = {
XFS_RANDOM_FORCE_SCRUB_REPAIR,
XFS_RANDOM_FORCE_SUMMARY_RECALC,
XFS_RANDOM_IUNLINK_FALLBACK,
+ XFS_RANDOM_BUF_IOERROR,
};
struct xfs_errortag_attr {
@@ -162,6 +163,7 @@ XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_REF);
XFS_ERRORTAG_ATTR_RW(force_repair, XFS_ERRTAG_FORCE_SCRUB_REPAIR);
XFS_ERRORTAG_ATTR_RW(bad_summary, XFS_ERRTAG_FORCE_SUMMARY_RECALC);
XFS_ERRORTAG_ATTR_RW(iunlink_fallback, XFS_ERRTAG_IUNLINK_FALLBACK);
+XFS_ERRORTAG_ATTR_RW(buf_ioerror, XFS_ERRTAG_BUF_IOERROR);
static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(noerror),
@@ -199,6 +201,7 @@ static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(force_repair),
XFS_ERRORTAG_ATTR_LIST(bad_summary),
XFS_ERRORTAG_ATTR_LIST(iunlink_fallback),
+ XFS_ERRORTAG_ATTR_LIST(buf_ioerror),
NULL,
};
--
2.21.1
next prev parent reply other threads:[~2020-04-17 15:09 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-17 15:08 [PATCH 00/12] xfs: flush related error handling cleanups Brian Foster
2020-04-17 15:08 ` [PATCH 01/12] xfs: refactor failed buffer resubmission into xfsaild Brian Foster
2020-04-17 22:37 ` Allison Collins
2020-04-20 2:45 ` Dave Chinner
2020-04-20 13:58 ` Brian Foster
2020-04-20 22:19 ` Dave Chinner
2020-04-17 15:08 ` [PATCH 02/12] xfs: factor out buffer I/O failure simulation code Brian Foster
2020-04-17 22:37 ` Allison Collins
2020-04-20 2:48 ` Dave Chinner
2020-04-20 13:58 ` Brian Foster
2020-04-17 15:08 ` [PATCH 03/12] xfs: always attach iflush_done and simplify error handling Brian Foster
2020-04-18 0:07 ` Allison Collins
2020-04-20 13:59 ` Brian Foster
2020-04-20 3:08 ` Dave Chinner
2020-04-20 14:00 ` Brian Foster
2020-04-17 15:08 ` [PATCH 04/12] xfs: remove unnecessary shutdown check from xfs_iflush() Brian Foster
2020-04-18 0:27 ` Allison Collins
2020-04-20 3:10 ` Dave Chinner
2020-04-17 15:08 ` [PATCH 05/12] xfs: ratelimit unmount time per-buffer I/O error warning Brian Foster
2020-04-20 3:19 ` Dave Chinner
2020-04-20 14:02 ` Brian Foster
2020-04-20 22:23 ` Dave Chinner
2020-04-21 12:13 ` Brian Foster
2020-04-20 18:50 ` Allison Collins
2020-04-17 15:08 ` [PATCH 06/12] xfs: remove duplicate verification from xfs_qm_dqflush() Brian Foster
2020-04-20 3:53 ` Dave Chinner
2020-04-20 14:02 ` Brian Foster
2020-04-20 22:31 ` Dave Chinner
2020-04-17 15:08 ` [PATCH 07/12] xfs: abort consistently on dquot flush failure Brian Foster
2020-04-20 3:54 ` Dave Chinner
2020-04-20 18:50 ` Allison Collins
2020-04-17 15:08 ` [PATCH 08/12] xfs: remove unnecessary quotaoff intent item push handler Brian Foster
2020-04-20 3:58 ` Dave Chinner
2020-04-20 14:02 ` Brian Foster
2020-04-17 15:08 ` [PATCH 09/12] xfs: elide the AIL lock on log item failure tracking Brian Foster
2020-04-17 15:08 ` [PATCH 10/12] xfs: clean up AIL log item removal functions Brian Foster
2020-04-20 4:32 ` Dave Chinner
2020-04-20 14:03 ` Brian Foster
2020-04-17 15:08 ` [PATCH 11/12] xfs: remove unused iflush stale parameter Brian Foster
2020-04-20 4:34 ` Dave Chinner
2020-04-20 19:19 ` Allison Collins
2020-04-17 15:08 ` Brian Foster [this message]
2020-04-20 4:37 ` [PATCH 12/12] xfs: random buffer write failure errortag Dave Chinner
2020-04-20 14:04 ` Brian Foster
2020-04-20 22:42 ` Allison Collins
2020-04-19 22:53 ` [PATCH 00/12] xfs: flush related error handling cleanups Dave Chinner
2020-04-20 14:06 ` Brian Foster
2020-04-20 22:53 ` Dave Chinner
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