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Diffstat (limited to 'tests/qemu-iotests/015')
| -rwxr-xr-x | tests/qemu-iotests/015 | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/tests/qemu-iotests/015 b/tests/qemu-iotests/015 new file mode 100755 index 0000000000..44c134f948 --- /dev/null +++ b/tests/qemu-iotests/015 @@ -0,0 +1,85 @@ +#!/bin/bash +# +# Combined test to grow the refcount table and test snapshots. +# +# Copyright (C) 2009 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=kwolf@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 + true +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter + +# actually any format that supports snapshots +_supported_fmt qcow2 +_supported_proto generic +_supported_os Linux + +echo +echo "creating image" + +# With 1k clusters a refcount block contains 512 clusters +# This makes 512k of the image file covered by a refcount block +# A refcount table that spans one clusters has 128 refcount +# tables which makes up 64M in the image file. +# +# We use a 36M image, so initially we can be sure that only one cluster is used +# for the refcount table. On the other hand this is big enough to cause a +# refcount table growth when rewriting the image after creating one snapshot. +size=36M +CLUSTER_SIZE=1k +_make_test_img $size + +# Create two snapshots which fill the image with two different patterns +echo "creating first snapshot" +$QEMU_IO -c "aio_write -P 123 0 $size" $TEST_IMG | _filter_qemu_io +$QEMU_IMG snapshot -c snap1 $TEST_IMG +echo "creating second snapshot" +$QEMU_IO -c "aio_write -P 165 0 $size" $TEST_IMG | _filter_qemu_io +$QEMU_IMG snapshot -c snap2 $TEST_IMG + +# Now check the pattern +echo "checking first snapshot" +$QEMU_IMG snapshot -a snap1 $TEST_IMG +$QEMU_IO -c "aio_read -P 123 0 $size" $TEST_IMG | _filter_qemu_io +echo "checking second snapshot" +$QEMU_IMG snapshot -a snap2 $TEST_IMG +$QEMU_IO -c "aio_read -P 165 0 $size" $TEST_IMG | _filter_qemu_io + +echo +echo "checking image for errors" +_check_test_img + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 |