From: Chandan Babu R <chandanrlinux@gmail.com>
To: fstests@vger.kernel.org
Cc: Chandan Babu R <chandanrlinux@gmail.com>,
linux-xfs@vger.kernel.org, djwong@kernel.org
Subject: [PATCH V6 10/13] xfs: Check for extent overflow when moving extent from cow to data fork
Date: Tue, 9 Mar 2021 10:31:21 +0530 [thread overview]
Message-ID: <20210309050124.23797-11-chandanrlinux@gmail.com> (raw)
In-Reply-To: <20210309050124.23797-1-chandanrlinux@gmail.com>
This test verifies that XFS does not cause inode fork's extent count to
overflow when writing to/funshare-ing a shared extent.
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
---
tests/xfs/534 | 104 ++++++++++++++++++++++++++++++++++++++++++++++
tests/xfs/534.out | 12 ++++++
tests/xfs/group | 1 +
3 files changed, 117 insertions(+)
create mode 100755 tests/xfs/534
create mode 100644 tests/xfs/534.out
diff --git a/tests/xfs/534 b/tests/xfs/534
new file mode 100755
index 00000000..06b21f40
--- /dev/null
+++ b/tests/xfs/534
@@ -0,0 +1,104 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2021 Chandan Babu R. All Rights Reserved.
+#
+# FS QA Test 534
+#
+# Verify that XFS does not cause inode fork's extent count to overflow when
+# writing to a shared extent.
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ cd /
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/reflink
+. ./common/inject
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs xfs
+_require_scratch
+_require_scratch_reflink
+_require_xfs_debug
+_require_xfs_io_command "reflink"
+_require_xfs_io_command "funshare"
+_require_xfs_io_error_injection "reduce_max_iextents"
+
+echo "Format and mount fs"
+_scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full
+_scratch_mount >> $seqres.full
+
+bsize=$(_get_block_size $SCRATCH_MNT)
+
+nr_blks=15
+
+srcfile=${SCRATCH_MNT}/srcfile
+dstfile=${SCRATCH_MNT}/dstfile
+
+echo "Inject reduce_max_iextents error tag"
+_scratch_inject_error reduce_max_iextents 1
+
+echo "Create a \$srcfile having an extent of length $nr_blks blocks"
+$XFS_IO_PROG -f -c "pwrite -b $((nr_blks * bsize)) 0 $((nr_blks * bsize))" \
+ -c fsync $srcfile >> $seqres.full
+
+echo "* Write to shared extent"
+
+echo "Share the extent with \$dstfile"
+_reflink $srcfile $dstfile >> $seqres.full
+
+echo "Buffered write to every other block of \$dstfile's shared extent"
+for i in $(seq 1 2 $((nr_blks - 1))); do
+ $XFS_IO_PROG -f -s -c "pwrite $((i * bsize)) $bsize" $dstfile \
+ >> $seqres.full 2>&1
+ [[ $? != 0 ]] && break
+done
+
+echo "Verify \$dstfile's extent count"
+nextents=$(_xfs_get_fsxattr nextents $dstfile)
+if (( $nextents > 10 )); then
+ echo "Extent count overflow check failed: nextents = $nextents"
+ exit 1
+fi
+
+rm $dstfile
+
+echo "* Funshare shared extent"
+
+echo "Share the extent with \$dstfile"
+_reflink $srcfile $dstfile >> $seqres.full
+
+echo "Funshare every other block of \$dstfile's shared extent"
+for i in $(seq 1 2 $((nr_blks - 1))); do
+ $XFS_IO_PROG -f -s -c "funshare $((i * bsize)) $bsize" $dstfile \
+ >> $seqres.full 2>&1
+ [[ $? != 0 ]] && break
+done
+
+echo "Verify \$dstfile's extent count"
+nextents=$(_xfs_get_fsxattr nextents $dstfile)
+if (( $nextents > 10 )); then
+ echo "Extent count overflow check failed: nextents = $nextents"
+ exit 1
+fi
+
+# success, all done
+status=0
+exit
+
diff --git a/tests/xfs/534.out b/tests/xfs/534.out
new file mode 100644
index 00000000..53288d12
--- /dev/null
+++ b/tests/xfs/534.out
@@ -0,0 +1,12 @@
+QA output created by 534
+Format and mount fs
+Inject reduce_max_iextents error tag
+Create a $srcfile having an extent of length 15 blocks
+* Write to shared extent
+Share the extent with $dstfile
+Buffered write to every other block of $dstfile's shared extent
+Verify $dstfile's extent count
+* Funshare shared extent
+Share the extent with $dstfile
+Funshare every other block of $dstfile's shared extent
+Verify $dstfile's extent count
diff --git a/tests/xfs/group b/tests/xfs/group
index 3ad47d07..b4f0c777 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -531,3 +531,4 @@
531 auto quick attr
532 auto quick dir hardlink symlink
533 auto quick
+534 auto quick reflink
--
2.29.2
next prev parent reply other threads:[~2021-03-09 5:03 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 5:01 [PATCH V6 00/13] xfs: Tests to verify inode fork extent count overflow detection Chandan Babu R
2021-03-09 5:01 ` [PATCH V6 01/13] _check_xfs_filesystem: sync fs before running scrub Chandan Babu R
2021-03-09 5:03 ` Darrick J. Wong
2021-03-10 6:12 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 02/13] common/xfs: Add a helper to get an inode fork's extent count Chandan Babu R
2021-03-09 5:04 ` Darrick J. Wong
2021-03-10 6:12 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 03/13] common/xfs: Add helper to obtain fsxattr field value Chandan Babu R
2021-03-09 5:04 ` Darrick J. Wong
2021-03-10 6:13 ` Allison Henderson
2021-03-10 19:54 ` Darrick J. Wong
2021-03-11 2:54 ` Chandan Babu R
2021-03-11 8:52 ` [PATCH V6.1] " Chandan Babu R
2021-03-11 18:36 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 04/13] xfs: Check for extent overflow when trivally adding a new extent Chandan Babu R
2021-03-10 19:54 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 05/13] xfs: Check for extent overflow when growing realtime bitmap/summary inodes Chandan Babu R
2021-03-10 19:55 ` Allison Henderson
2021-03-22 17:56 ` Darrick J. Wong
2021-03-23 15:51 ` Chandan Babu R
2021-03-23 20:57 ` Darrick J. Wong
2021-03-24 10:46 ` Chandan Babu R
2021-03-24 14:17 ` Chandan Babu R
2021-03-09 5:01 ` [PATCH V6 06/13] xfs: Check for extent overflow when punching a hole Chandan Babu R
2021-03-10 19:55 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 07/13] xfs: Check for extent overflow when adding/removing xattrs Chandan Babu R
2021-03-10 19:55 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 08/13] xfs: Check for extent overflow when adding/removing dir entries Chandan Babu R
2021-03-10 22:41 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 09/13] xfs: Check for extent overflow when writing to unwritten extent Chandan Babu R
2021-03-10 22:41 ` Allison Henderson
2021-03-09 5:01 ` Chandan Babu R [this message]
2021-03-10 22:41 ` [PATCH V6 10/13] xfs: Check for extent overflow when moving extent from cow to data fork Allison Henderson
2021-03-09 5:01 ` [PATCH V6 11/13] xfs: Check for extent overflow when remapping an extent Chandan Babu R
2021-03-10 23:49 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 12/13] xfs: Check for extent overflow when swapping extents Chandan Babu R
2021-03-10 23:49 ` Allison Henderson
2021-03-09 5:01 ` [PATCH V6 13/13] xfs: Stress test with bmap_alloc_minlen_extent error tag enabled Chandan Babu R
2021-03-10 23:49 ` Allison Henderson
2021-03-22 18:54 ` Darrick J. Wong
2021-03-23 5:28 ` Chandan Babu R
2021-03-23 11:27 ` Chandan Babu R
2021-03-26 4:05 ` Chandan Babu R
2021-03-26 4:21 ` Darrick J. Wong
2021-04-15 9:33 ` Chandan Babu R
2021-04-17 0:26 ` Darrick J. Wong
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