Re: [Qemu-devel] [PATCH] qemu-iotests: Test case for backing file deletion

[Fam Zheng <famz@redhat.com>]

On Tue, 10/29 19:18, Max Reitz wrote:
> Add a test case for trying to open an image file where it is impossible
> to open its backing file (in this case, because it was deleted). When
> doing this, qemu (or qemu-io in this case) should not crash but rather
> print an appropriate error message.
> 
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> ---
> Follow-up to:
>  - block: Don't copy backing file name on error
> ---
>  tests/qemu-iotests/069     | 59 ++++++++++++++++++++++++++++++++++++++++++++++
>  tests/qemu-iotests/069.out |  8 +++++++
>  tests/qemu-iotests/group   |  1 +
>  3 files changed, 68 insertions(+)
>  create mode 100755 tests/qemu-iotests/069
>  create mode 100644 tests/qemu-iotests/069.out
> 
> diff --git a/tests/qemu-iotests/069 b/tests/qemu-iotests/069
> new file mode 100755
> index 0000000..3042803
> --- /dev/null
> +++ b/tests/qemu-iotests/069
> @@ -0,0 +1,59 @@
> +#!/bin/bash
> +#
> +# Test case for deleting a backing file
> +#
> +# Copyright (C) 2013 Red Hat, Inc.
> +#
> +# This program is free software; you can redistribute it and/or modify
> +# it under the terms of the GNU General Public License as published by
> +# the Free Software Foundation; either version 2 of the License, or
> +# (at your option) any later version.
> +#
> +# This program is distributed in the hope that it will be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program.  If not, see <http://www.gnu.org/licenses/>.
> +#
> +
> +# creator
> +owner=mreitz@redhat.com
> +
> +seq="$(basename $0)"
> +echo "QA output created by $seq"
> +
> +here="$PWD"
> +tmp=/tmp/$$
> +status=1	# failure is the default!
> +
> +_cleanup()
> +{
> +	_cleanup_test_img
> +}
> +trap "_cleanup; exit \$status" 0 1 2 3 15
> +
> +# get standard environment, filters and checks
> +. ./common.rc
> +. ./common.filter
> +
> +_supported_fmt cow qed qcow qcow2 vmdk
> +_supported_proto generic
> +_supported_os Linux
> +
> +IMG_SIZE=128K
> +
> +echo
> +echo "=== Creating an image with a backing file and deleting that file ==="
> +echo
> +TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE
> +_make_test_img -b "$TEST_IMG.base" $IMG_SIZE
> +rm -f "$TEST_IMG.base"
> +# Just open the image and close it right again (this should print an error message)
> +$QEMU_IO -c quit "$TEST_IMG" 2>&1 | _filter_testdir | _filter_imgfmt
> +
> +# success, all done
> +echo "*** done"
> +rm -f $seq.full
> +status=0
> diff --git a/tests/qemu-iotests/069.out b/tests/qemu-iotests/069.out
> new file mode 100644
> index 0000000..3648814
> --- /dev/null
> +++ b/tests/qemu-iotests/069.out
> @@ -0,0 +1,8 @@
> +QA output created by 069
> +
> +=== Creating an image with a backing file and deleting that file ===
> +
> +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=131072 
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=131072 backing_file='TEST_DIR/t.IMGFMT.base' 
> +qemu-io: can't open device TEST_DIR/t.IMGFMT: Could not open file: No such file or directory
> +*** done
> diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
> index 3ca9cba..c57ff35 100644
> --- a/tests/qemu-iotests/group
> +++ b/tests/qemu-iotests/group
> @@ -74,3 +74,4 @@
>  066 rw auto
>  067 rw auto
>  068 rw auto
> +069 rw auto
> -- 
> 1.8.4.1

Reviewed-by: Fam Zheng <famz@redhat.com>