1#!/bin/bash 2# 3# Combined test to grow the refcount table and test snapshots. 4# 5# Copyright (C) 2009 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=kwolf@redhat.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27here=`pwd` 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34 true 35} 36trap "_cleanup; exit \$status" 0 1 2 3 15 37 38# get standard environment, filters and checks 39. ./common.rc 40. ./common.filter 41 42# actually any format that supports snapshots 43_supported_fmt qcow2 44_supported_proto generic 45_supported_os Linux 46 47echo 48echo "creating image" 49 50# With 1k clusters a refcount block contains 512 clusters 51# This makes 512k of the image file covered by a refcount block 52# A refcount table that spans one clusters has 128 refcount 53# tables which makes up 64M in the image file. 54# 55# We use a 36M image, so initially we can be sure that only one cluster is used 56# for the refcount table. On the other hand this is big enough to cause a 57# refcount table growth when rewriting the image after creating one snapshot. 58size=36M 59_make_test_img -o cluster_size=1k $size 60 61# Create two snapshots which fill the image with two different patterns 62echo "creating first snapshot" 63$QEMU_IO -c "aio_write -P 123 0 $size" $TEST_IMG | _filter_qemu_io 64$QEMU_IMG snapshot -c snap1 $TEST_IMG 65echo "creating second snapshot" 66$QEMU_IO -c "aio_write -P 165 0 $size" $TEST_IMG | _filter_qemu_io 67$QEMU_IMG snapshot -c snap2 $TEST_IMG 68 69# Now check the pattern 70echo "checking first snapshot" 71$QEMU_IMG snapshot -a snap1 $TEST_IMG 72$QEMU_IO -c "aio_read -P 123 0 $size" $TEST_IMG | _filter_qemu_io 73echo "checking second snapshot" 74$QEMU_IMG snapshot -a snap2 $TEST_IMG 75$QEMU_IO -c "aio_read -P 165 0 $size" $TEST_IMG | _filter_qemu_io 76 77echo 78echo "checking image for errors" 79_check_test_img 80 81# success, all done 82echo "*** done" 83rm -f $seq.full 84status=0 85