Re: [PATCH 11/11] xfs: Stress test with with bmap_alloc_minlen_extent error tag enabled

["Darrick J. Wong" <darrick.wong@oracle.com>]

On Fri, Nov 13, 2020 at 04:57:03PM +0530, Chandan Babu R wrote:
> This commit adds a stress test that executes fsstress with
> bmap_alloc_minlen_extent error tag enabled.
> 
> Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
> ---
>  tests/xfs/531     | 85 +++++++++++++++++++++++++++++++++++++++++++++++
>  tests/xfs/531.out |  6 ++++
>  tests/xfs/group   |  1 +
>  3 files changed, 92 insertions(+)
>  create mode 100755 tests/xfs/531
>  create mode 100644 tests/xfs/531.out
> 
> diff --git a/tests/xfs/531 b/tests/xfs/531
> new file mode 100755
> index 00000000..e846cc0e
> --- /dev/null
> +++ b/tests/xfs/531
> @@ -0,0 +1,85 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2020 Chandan Babu R.  All Rights Reserved.
> +#
> +# FS QA Test 531
> +#
> +# Execute fsstress with bmap_alloc_minlen_extent error tag enabled.
> +#
> +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_test_program "punch-alternating"
> +_require_xfs_io_error_injection "bmap_alloc_minlen_extent"
> +
> +echo "Format and mount fs"
> +_scratch_mkfs_sized $((1024 * 1024 * 1024)) >> $seqres.full

Why is a 1G fs required?

> +_scratch_mount >> $seqres.full
> +
> +bsize=$(_get_block_size $SCRATCH_MNT)
> +
> +testfile=$SCRATCH_MNT/testfile
> +
> +echo "Consume free space"
> +dd if=/dev/zero of=${testfile} bs=${bsize} >> $seqres.full 2>&1
> +sync
> +
> +echo "Create fragmented filesystem"
> +$here/src/punch-alternating $testfile >> $seqres.full
> +sync
> +
> +echo "Inject bmap_alloc_minlen_extent error tag"
> +xfs_io -x -c 'inject bmap_alloc_minlen_extent' $SCRATCH_MNT
> +
> +echo "Execute fsstress in background"
> +$FSSTRESS_PROG -d $SCRATCH_MNT -p128 -n999999999 \

-n and -p ought to be computed from TIME_FACTOR and LOAD_FACTOR.

--D

> +		 -f bulkstat=0 \
> +		 -f bulkstat1=0 \
> +		 -f fiemap=0 \
> +		 -f getattr=0 \
> +		 -f getdents=0 \
> +		 -f getfattr=0 \
> +		 -f listfattr=0 \
> +		 -f mread=0 \
> +		 -f read=0 \
> +		 -f readlink=0 \
> +		 -f readv=0 \
> +		 -f stat=0 \
> +		 -f aread=0 \
> +		 -f dread=0 > /dev/null 2>&1 &
> +
> +fsstress_pid=$!
> +sleep 2m
> +
> +echo "Killing fsstress process $fsstress_pid ..." >> $seqres.full
> +kill $fsstress_pid >> $seqres.full
> +wait $fsstress_pid
> +
> +# success, all done
> +status=0
> +exit
> diff --git a/tests/xfs/531.out b/tests/xfs/531.out
> new file mode 100644
> index 00000000..e0a419c2
> --- /dev/null
> +++ b/tests/xfs/531.out
> @@ -0,0 +1,6 @@
> +QA output created by 531
> +Format and mount fs
> +Consume free space
> +Create fragmented filesystem
> +Inject bmap_alloc_minlen_extent error tag
> +Execute fsstress in background
> diff --git a/tests/xfs/group b/tests/xfs/group
> index 81a15582..f4cb5af6 100644
> --- a/tests/xfs/group
> +++ b/tests/xfs/group
> @@ -528,3 +528,4 @@
>  528 auto quick reflink
>  529 auto quick reflink
>  530 auto quick
> +531 auto stress
> -- 
> 2.28.0
>