diff mbox series

[V6,12/13] xfs: Check for extent overflow when swapping extents

Message ID 20210309050124.23797-13-chandanrlinux@gmail.com (mailing list archive)
State Accepted, archived
Headers show
Series xfs: Tests to verify inode fork extent count overflow detection | expand

Commit Message

Chandan Babu R March 9, 2021, 5:01 a.m. UTC 
This test verifies that XFS does not cause inode fork's extent count to
overflow when swapping forks across two files.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
---
 tests/xfs/536     | 105 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/536.out |  13 ++++++
 tests/xfs/group   |   1 +
 3 files changed, 119 insertions(+)
 create mode 100755 tests/xfs/536
 create mode 100644 tests/xfs/536.out

Comments

Allison Henderson March 10, 2021, 11:49 p.m. UTC | #1 
On 3/8/21 10:01 PM, Chandan Babu R wrote:
> This test verifies that XFS does not cause inode fork's extent count to
> overflow when swapping forks across two files.
> 
> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
> Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
Makes sense.  The extent illustrations help
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>

> ---
>   tests/xfs/536     | 105 ++++++++++++++++++++++++++++++++++++++++++++++
>   tests/xfs/536.out |  13 ++++++
>   tests/xfs/group   |   1 +
>   3 files changed, 119 insertions(+)
>   create mode 100755 tests/xfs/536
>   create mode 100644 tests/xfs/536.out
> 
> diff --git a/tests/xfs/536 b/tests/xfs/536
> new file mode 100755
> index 00000000..9bb4094a
> --- /dev/null
> +++ b/tests/xfs/536
> @@ -0,0 +1,105 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2021 Chandan Babu R.  All Rights Reserved.
> +#
> +# FS QA Test 536
> +#
> +# Verify that XFS does not cause inode fork's extent count to overflow when
> +# swapping forks between files
> +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/inject
> +
> +# remove previous $seqres.full before test
> +rm -f $seqres.full
> +
> +# real QA test starts here
> +
> +_supported_fs xfs
> +_require_scratch
> +_require_xfs_debug
> +_require_xfs_scratch_rmapbt
> +_require_xfs_io_command "fcollapse"
> +_require_xfs_io_command "swapext"
> +_require_xfs_io_error_injection "reduce_max_iextents"
> +
> +echo "* Swap extent forks"
> +
> +echo "Format and mount fs"
> +_scratch_mkfs >> $seqres.full
> +_scratch_mount >> $seqres.full
> +
> +bsize=$(_get_block_size $SCRATCH_MNT)
> +
> +srcfile=${SCRATCH_MNT}/srcfile
> +donorfile=${SCRATCH_MNT}/donorfile
> +
> +echo "Create \$donorfile having an extent of length 67 blocks"
> +$XFS_IO_PROG -f -s -c "pwrite -b $((17 * bsize)) 0 $((17 * bsize))" $donorfile \
> +       >> $seqres.full
> +
> +# After the for loop the donor file will have the following extent layout
> +# | 0-4 | 5 | 6 | 7 | 8 | 9 | 10 |
> +echo "Fragment \$donorfile"
> +for i in $(seq 5 10); do
> +	start_offset=$((i * bsize))
> +	$XFS_IO_PROG -f -c "fcollapse $start_offset $bsize" $donorfile >> $seqres.full
> +done
> +
> +echo "Create \$srcfile having an extent of length 18 blocks"
> +$XFS_IO_PROG -f -s -c "pwrite -b $((18 * bsize)) 0 $((18 * bsize))" $srcfile \
> +       >> $seqres.full
> +
> +echo "Fragment \$srcfile"
> +# After the for loop the src file will have the following extent layout
> +# | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7-10 |
> +for i in $(seq 1 7); do
> +	start_offset=$((i * bsize))
> +	$XFS_IO_PROG -f -c "fcollapse $start_offset $bsize" $srcfile >> $seqres.full
> +done
> +
> +echo "Collect \$donorfile's extent count"
> +donor_nr_exts=$(_xfs_get_fsxattr nextents $donorfile)
> +
> +echo "Collect \$srcfile's extent count"
> +src_nr_exts=$(_xfs_get_fsxattr nextents $srcfile)
> +
> +echo "Inject reduce_max_iextents error tag"
> +_scratch_inject_error reduce_max_iextents 1
> +
> +echo "Swap \$srcfile's and \$donorfile's extent forks"
> +$XFS_IO_PROG -f -c "swapext $donorfile" $srcfile >> $seqres.full 2>&1
> +
> +echo "Check for \$donorfile's extent count overflow"
> +nextents=$(_xfs_get_fsxattr nextents $donorfile)
> +
> +if (( $nextents == $src_nr_exts )); then
> +	echo "\$donorfile: Extent count overflow check failed"
> +fi
> +
> +echo "Check for \$srcfile's extent count overflow"
> +nextents=$(_xfs_get_fsxattr nextents $srcfile)
> +
> +if (( $nextents == $donor_nr_exts )); then
> +	echo "\$srcfile: Extent count overflow check failed"
> +fi
> +
> +# success, all done
> +status=0
> +exit
> diff --git a/tests/xfs/536.out b/tests/xfs/536.out
> new file mode 100644
> index 00000000..f550aa1e
> --- /dev/null
> +++ b/tests/xfs/536.out
> @@ -0,0 +1,13 @@
> +QA output created by 536
> +* Swap extent forks
> +Format and mount fs
> +Create $donorfile having an extent of length 67 blocks
> +Fragment $donorfile
> +Create $srcfile having an extent of length 18 blocks
> +Fragment $srcfile
> +Collect $donorfile's extent count
> +Collect $srcfile's extent count
> +Inject reduce_max_iextents error tag
> +Swap $srcfile's and $donorfile's extent forks
> +Check for $donorfile's extent count overflow
> +Check for $srcfile's extent count overflow
> diff --git a/tests/xfs/group b/tests/xfs/group
> index aed06494..ba674a58 100644
> --- a/tests/xfs/group
> +++ b/tests/xfs/group
> @@ -533,3 +533,4 @@
>   533 auto quick
>   534 auto quick reflink
>   535 auto quick reflink
> +536 auto quick
>
diff mbox series

Patch

diff --git a/tests/xfs/536 b/tests/xfs/536
new file mode 100755
index 00000000..9bb4094a
--- /dev/null
+++ b/tests/xfs/536
@@ -0,0 +1,105 @@ 
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2021 Chandan Babu R.  All Rights Reserved.
+#
+# FS QA Test 536
+#
+# Verify that XFS does not cause inode fork's extent count to overflow when
+# swapping forks between files
+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/inject
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs xfs
+_require_scratch
+_require_xfs_debug
+_require_xfs_scratch_rmapbt
+_require_xfs_io_command "fcollapse"
+_require_xfs_io_command "swapext"
+_require_xfs_io_error_injection "reduce_max_iextents"
+
+echo "* Swap extent forks"
+
+echo "Format and mount fs"
+_scratch_mkfs >> $seqres.full
+_scratch_mount >> $seqres.full
+
+bsize=$(_get_block_size $SCRATCH_MNT)
+
+srcfile=${SCRATCH_MNT}/srcfile
+donorfile=${SCRATCH_MNT}/donorfile
+
+echo "Create \$donorfile having an extent of length 67 blocks"
+$XFS_IO_PROG -f -s -c "pwrite -b $((17 * bsize)) 0 $((17 * bsize))" $donorfile \
+       >> $seqres.full
+
+# After the for loop the donor file will have the following extent layout
+# | 0-4 | 5 | 6 | 7 | 8 | 9 | 10 |
+echo "Fragment \$donorfile"
+for i in $(seq 5 10); do
+	start_offset=$((i * bsize))
+	$XFS_IO_PROG -f -c "fcollapse $start_offset $bsize" $donorfile >> $seqres.full
+done
+
+echo "Create \$srcfile having an extent of length 18 blocks"
+$XFS_IO_PROG -f -s -c "pwrite -b $((18 * bsize)) 0 $((18 * bsize))" $srcfile \
+       >> $seqres.full
+
+echo "Fragment \$srcfile"
+# After the for loop the src file will have the following extent layout
+# | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7-10 |
+for i in $(seq 1 7); do
+	start_offset=$((i * bsize))
+	$XFS_IO_PROG -f -c "fcollapse $start_offset $bsize" $srcfile >> $seqres.full
+done
+
+echo "Collect \$donorfile's extent count"
+donor_nr_exts=$(_xfs_get_fsxattr nextents $donorfile)
+
+echo "Collect \$srcfile's extent count"
+src_nr_exts=$(_xfs_get_fsxattr nextents $srcfile)
+
+echo "Inject reduce_max_iextents error tag"
+_scratch_inject_error reduce_max_iextents 1
+
+echo "Swap \$srcfile's and \$donorfile's extent forks"
+$XFS_IO_PROG -f -c "swapext $donorfile" $srcfile >> $seqres.full 2>&1
+
+echo "Check for \$donorfile's extent count overflow"
+nextents=$(_xfs_get_fsxattr nextents $donorfile)
+
+if (( $nextents == $src_nr_exts )); then
+	echo "\$donorfile: Extent count overflow check failed"
+fi
+
+echo "Check for \$srcfile's extent count overflow"
+nextents=$(_xfs_get_fsxattr nextents $srcfile)
+
+if (( $nextents == $donor_nr_exts )); then
+	echo "\$srcfile: Extent count overflow check failed"
+fi
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/536.out b/tests/xfs/536.out
new file mode 100644
index 00000000..f550aa1e
--- /dev/null
+++ b/tests/xfs/536.out
@@ -0,0 +1,13 @@ 
+QA output created by 536
+* Swap extent forks
+Format and mount fs
+Create $donorfile having an extent of length 67 blocks
+Fragment $donorfile
+Create $srcfile having an extent of length 18 blocks
+Fragment $srcfile
+Collect $donorfile's extent count
+Collect $srcfile's extent count
+Inject reduce_max_iextents error tag
+Swap $srcfile's and $donorfile's extent forks
+Check for $donorfile's extent count overflow
+Check for $srcfile's extent count overflow
diff --git a/tests/xfs/group b/tests/xfs/group
index aed06494..ba674a58 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -533,3 +533,4 @@ 
 533 auto quick
 534 auto quick reflink
 535 auto quick reflink
+536 auto quick