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[Qemu-devel] [PATCH 09/32] qemu-iotests: Add 043 backing file chain infi
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH 09/32] qemu-iotests: Add 043 backing file chain infinite loop test |
Date: |
Wed, 24 Oct 2012 11:50:33 +0200 |
From: Stefan Hajnoczi <address@hidden>
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 <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
tests/qemu-iotests/043 | 95 ++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/043.out | 66 +++++++++++++++++++++++++++++
tests/qemu-iotests/common.rc | 10 ++++
tests/qemu-iotests/group | 1 +
4 files changed, 172 insertions(+), 0 deletions(-)
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..3ba08dc
--- /dev/null
+++ b/tests/qemu-iotests/043
@@ -0,0 +1,95 @@
+#!/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
address@hidden
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+
+_cleanup()
+{
+ _cleanup_test_img
+ rm -f $TEST_IMG.[123].base
+}
+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
+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 d5f9ab0..7407492 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -48,3 +48,4 @@
039 rw auto
040 rw auto
042 rw auto quick
+043 rw auto backing
--
1.7.6.5
- [Qemu-devel] [PATCH 05/32] block: make bdrv_find_backing_image compare canonical filenames, (continued)
- [Qemu-devel] [PATCH 05/32] block: make bdrv_find_backing_image compare canonical filenames, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 03/32] qmp: fix __accept() in qmp.py, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 07/32] qemu-iotests: add relative backing file tests for block-commit (040), Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 04/32] qemu-img rebase: use empty string to rebase without backing file, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 08/32] qemu-img: Add --backing-chain option to info command, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 06/32] block: in commit, determine base image from the top image, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 12/32] monitor: Allow add-fd to any specified fd set, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 10/32] qemu-img: document 'info --backing-chain', Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 11/32] block: bdrv_create(): don't leak cco.filename on error, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 14/32] monitor: Prevent removing fd from set during init, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 09/32] qemu-iotests: Add 043 backing file chain infinite loop test,
Kevin Wolf <=
- [Qemu-devel] [PATCH 17/32] block: add bdrv_query_stats, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 15/32] qemu-config: Add new -add-fd command line option, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 19/32] block: introduce new dirty bitmap functionality, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 21/32] block: rename block_job_complete to block_job_completed, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 13/32] monitor: Enable adding an inherited fd to an fd set, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 22/32] block: add block-job-complete, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 16/32] block: add bdrv_query_info, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 18/32] block: add bdrv_open_backing_file, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 20/32] block: export dirty bitmap information in query-block, Kevin Wolf, 2012/10/24
- [Qemu-devel] [PATCH 25/32] qmp: add drive-mirror command, Kevin Wolf, 2012/10/24