From: Gao Xiang <hsiangkao@redhat.com>
To: linux-xfs@vger.kernel.org
Cc: "Darrick J. Wong" <djwong@kernel.org>,
Brian Foster <bfoster@redhat.com>,
Dave Chinner <david@fromorbit.com>,
Christoph Hellwig <hch@lst.de>,
Eric Sandeen <sandeen@sandeen.net>,
Gao Xiang <hsiangkao@redhat.com>
Subject: [PATCH v8 5/5] xfs: add error injection for per-AG resv failure
Date: Fri, 5 Mar 2021 10:57:03 +0800 [thread overview]
Message-ID: <20210305025703.3069469-6-hsiangkao@redhat.com> (raw)
In-Reply-To: <20210305025703.3069469-1-hsiangkao@redhat.com>
per-AG resv failure after fixing up freespace is hard to test in an
effective way, so directly add an error injection path to observe
such error handling path works as expected.
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
---
fs/xfs/libxfs/xfs_ag_resv.c | 6 +++++-
fs/xfs/libxfs/xfs_errortag.h | 4 +++-
fs/xfs/xfs_error.c | 3 +++
3 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_ag_resv.c b/fs/xfs/libxfs/xfs_ag_resv.c
index fdfe6dc0d307..6c5f8d10589c 100644
--- a/fs/xfs/libxfs/xfs_ag_resv.c
+++ b/fs/xfs/libxfs/xfs_ag_resv.c
@@ -211,7 +211,11 @@ __xfs_ag_resv_init(
ASSERT(0);
return -EINVAL;
}
- error = xfs_mod_fdblocks(mp, -(int64_t)hidden_space, true);
+
+ if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_AG_RESV_FAIL))
+ error = -ENOSPC;
+ else
+ error = xfs_mod_fdblocks(mp, -(int64_t)hidden_space, true);
if (error) {
trace_xfs_ag_resv_init_error(pag->pag_mount, pag->pag_agno,
error, _RET_IP_);
diff --git a/fs/xfs/libxfs/xfs_errortag.h b/fs/xfs/libxfs/xfs_errortag.h
index 6ca9084b6934..a23a52e643ad 100644
--- a/fs/xfs/libxfs/xfs_errortag.h
+++ b/fs/xfs/libxfs/xfs_errortag.h
@@ -58,7 +58,8 @@
#define XFS_ERRTAG_BUF_IOERROR 35
#define XFS_ERRTAG_REDUCE_MAX_IEXTENTS 36
#define XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT 37
-#define XFS_ERRTAG_MAX 38
+#define XFS_ERRTAG_AG_RESV_FAIL 38
+#define XFS_ERRTAG_MAX 39
/*
* Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
@@ -101,5 +102,6 @@
#define XFS_RANDOM_BUF_IOERROR XFS_RANDOM_DEFAULT
#define XFS_RANDOM_REDUCE_MAX_IEXTENTS 1
#define XFS_RANDOM_BMAP_ALLOC_MINLEN_EXTENT 1
+#define XFS_RANDOM_AG_RESV_FAIL 1
#endif /* __XFS_ERRORTAG_H_ */
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index 185b4915b7bf..f70984f3174d 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -56,6 +56,7 @@ static unsigned int xfs_errortag_random_default[] = {
XFS_RANDOM_BUF_IOERROR,
XFS_RANDOM_REDUCE_MAX_IEXTENTS,
XFS_RANDOM_BMAP_ALLOC_MINLEN_EXTENT,
+ XFS_RANDOM_AG_RESV_FAIL,
};
struct xfs_errortag_attr {
@@ -168,6 +169,7 @@ XFS_ERRORTAG_ATTR_RW(iunlink_fallback, XFS_ERRTAG_IUNLINK_FALLBACK);
XFS_ERRORTAG_ATTR_RW(buf_ioerror, XFS_ERRTAG_BUF_IOERROR);
XFS_ERRORTAG_ATTR_RW(reduce_max_iextents, XFS_ERRTAG_REDUCE_MAX_IEXTENTS);
XFS_ERRORTAG_ATTR_RW(bmap_alloc_minlen_extent, XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT);
+XFS_ERRORTAG_ATTR_RW(ag_resv_fail, XFS_ERRTAG_AG_RESV_FAIL);
static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(noerror),
@@ -208,6 +210,7 @@ static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(buf_ioerror),
XFS_ERRORTAG_ATTR_LIST(reduce_max_iextents),
XFS_ERRORTAG_ATTR_LIST(bmap_alloc_minlen_extent),
+ XFS_ERRORTAG_ATTR_LIST(ag_resv_fail),
NULL,
};
--
2.27.0
next prev parent reply other threads:[~2021-03-05 2:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-05 2:56 [PATCH v8 0/5] xfs: support shrinking free space in the last AG Gao Xiang
2021-03-05 2:56 ` [PATCH v8 1/5] xfs: update lazy sb counters immediately for resizefs Gao Xiang
2021-03-22 11:27 ` Brian Foster
2021-03-05 2:57 ` [PATCH v8 2/5] xfs: hoist out xfs_resizefs_init_new_ags() Gao Xiang
2021-03-22 11:28 ` Brian Foster
2021-03-22 11:53 ` Gao Xiang
2021-03-22 12:21 ` Brian Foster
2021-03-05 2:57 ` [PATCH v8 3/5] xfs: introduce xfs_ag_shrink_space() Gao Xiang
2021-03-09 18:05 ` Darrick J. Wong
2021-03-22 11:30 ` Brian Foster
2021-03-22 12:03 ` Gao Xiang
2021-03-22 12:25 ` Brian Foster
2021-03-22 12:33 ` Gao Xiang
2021-03-22 16:38 ` Darrick J. Wong
2021-03-05 2:57 ` [PATCH v8 4/5] xfs: support shrinking unused space in the last AG Gao Xiang
2021-03-22 11:30 ` Brian Foster
2021-03-22 12:07 ` Gao Xiang
2021-03-22 12:26 ` Brian Foster
2021-03-22 12:36 ` Gao Xiang
2021-03-22 12:43 ` Brian Foster
2021-03-22 12:50 ` Gao Xiang
2021-03-22 16:42 ` Darrick J. Wong
2021-03-23 1:15 ` Gao Xiang
2021-03-05 2:57 ` Gao Xiang [this message]
2021-03-09 18:05 ` [PATCH v8 5/5] xfs: add error injection for per-AG resv failure Darrick J. Wong
2021-03-09 18:44 ` Gao Xiang
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