This new test verifies that qemu-img info --backing-chain safely aborts when an image file has a backing file infinite loop.
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com> --- tests/qemu-iotests/043 | 94 ++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/043.out | 66 +++++++++++++++++++++++++++++++ tests/qemu-iotests/common.rc | 10 +++++ tests/qemu-iotests/group | 1 + 4 files changed, 171 insertions(+) create mode 100755 tests/qemu-iotests/043 create mode 100644 tests/qemu-iotests/043.out diff --git a/tests/qemu-iotests/043 b/tests/qemu-iotests/043 new file mode 100755 index 0000000..bf390ac --- /dev/null +++ b/tests/qemu-iotests/043 @@ -0,0 +1,94 @@ +#!/bin/bash +# +# Test that qemu-img info --backing-chain detects infinite loops +# +# Copyright (C) 2012 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=stefa...@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 + +# Any format supporting backing files +_supported_fmt qcow qcow2 vmdk qed +_supported_proto generic +_supported_os Linux + + +size=128M +_make_test_img $size +$QEMU_IMG rebase -u -b $TEST_IMG $TEST_IMG + +echo +echo "== backing file references self ==" +_img_info --backing-chain + +_make_test_img $size +mv $TEST_IMG $TEST_IMG.base +_make_test_img -b $TEST_IMG.base $size +$QEMU_IMG rebase -u -b $TEST_IMG $TEST_IMG.base + +echo +echo "== parent references self ==" +_img_info --backing-chain + +_make_test_img $size +mv $TEST_IMG $TEST_IMG.1.base +_make_test_img -b $TEST_IMG.1.base $size +mv $TEST_IMG $TEST_IMG.2.base +_make_test_img -b $TEST_IMG.2.base $size +mv $TEST_IMG $TEST_IMG.3.base +_make_test_img -b $TEST_IMG.3.base $size +$QEMU_IMG rebase -u -b $TEST_IMG.2.base $TEST_IMG.1.base + +echo +echo "== ancestor references another ancestor ==" +_img_info --backing-chain + +_make_test_img $size +mv $TEST_IMG $TEST_IMG.1.base +_make_test_img -b $TEST_IMG.1.base $size +mv $TEST_IMG $TEST_IMG.2.base +_make_test_img -b $TEST_IMG.2.base $size + +echo +echo "== finite chain of length 3 (human) ==" +_img_info --backing-chain + +echo +echo "== finite chain of length 3 (json) ==" +_img_info --backing-chain --output=json + +# success, all done +echo "*** done" +rm -f $seq.full $TEST_IMG.[123].base +status=0 diff --git a/tests/qemu-iotests/043.out b/tests/qemu-iotests/043.out new file mode 100644 index 0000000..ad23337 --- /dev/null +++ b/tests/qemu-iotests/043.out @@ -0,0 +1,66 @@ +QA output created by 043 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 + +== backing file references self == +qemu-img: Backing file 'TEST_DIR/t.IMGFMT' creates an infinite loop. +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR/t.IMGFMT.base' + +== parent references self == +qemu-img: Backing file 'TEST_DIR/t.IMGFMT' creates an infinite loop. +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR/t.IMGFMT.1.base' +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR/t.IMGFMT.2.base' +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR/t.IMGFMT.3.base' + +== ancestor references another ancestor == +qemu-img: Backing file 'TEST_DIR/t.IMGFMT.2.base' creates an infinite loop. +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR/t.IMGFMT.1.base' +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file='TEST_DIR/t.IMGFMT.2.base' + +== finite chain of length 3 (human) == +image: TEST_DIR/t.IMGFMT +file format: IMGFMT +virtual size: 128M (134217728 bytes) +cluster_size: 65536 +backing file: TEST_DIR/t.IMGFMT.2.base + +image: TEST_DIR/t.IMGFMT.2.base +file format: IMGFMT +virtual size: 128M (134217728 bytes) +cluster_size: 65536 +backing file: TEST_DIR/t.IMGFMT.1.base + +image: TEST_DIR/t.IMGFMT.1.base +file format: IMGFMT +virtual size: 128M (134217728 bytes) +cluster_size: 65536 + +== finite chain of length 3 (json) == +[ + { + "virtual-size": 134217728, + "filename": "TEST_DIR/t.IMGFMT", + "cluster-size": 65536, + "format": "IMGFMT", + "backing-filename": "TEST_DIR/t.IMGFMT.2.base", + "dirty-flag": false + }, + { + "virtual-size": 134217728, + "filename": "TEST_DIR/t.IMGFMT.2.base", + "cluster-size": 65536, + "format": "IMGFMT", + "backing-filename": "TEST_DIR/t.IMGFMT.1.base", + "dirty-flag": false + }, + { + "virtual-size": 134217728, + "filename": "TEST_DIR/t.IMGFMT.1.base", + "cluster-size": 65536, + "format": "IMGFMT", + "dirty-flag": false + } +] +*** done diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc index d534e94..334534f 100644 --- a/tests/qemu-iotests/common.rc +++ b/tests/qemu-iotests/common.rc @@ -145,6 +145,16 @@ _check_test_img() sed -e 's/qemu-img\: This image format does not support checks/No errors were found on the image./' } +_img_info() +{ + $QEMU_IMG info "$@" $TEST_IMG 2>&1 | \ + sed -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \ + -e "s#$TEST_DIR#TEST_DIR#g" \ + -e "s#$IMGFMT#IMGFMT#g" \ + -e "/^disk size:/ D" \ + -e "/actual-size/ D" +} + _get_pids_by_name() { if [ $# -ne 1 ] diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 66d2ba9..a1b8917 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -47,3 +47,4 @@ 038 rw auto backing 039 rw auto 040 rw auto +043 rw auto backing -- 1.7.11.7
