1#!/bin/sh 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, write to the Free Software 19# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 20# USA 21# 22 23# creator 24owner=kwolf@redhat.com 25 26seq=`basename $0` 27echo "QA output created by $seq" 28 29here=`pwd` 30tmp=/tmp/$$ 31status=1 # failure is the default! 32 33_cleanup() 34{ 35 _cleanup_test_img 36 true 37} 38trap "_cleanup; exit \$status" 0 1 2 3 15 39 40# get standard environment, filters and checks 41. ./common.rc 42. ./common.filter 43 44# actually any format that supports snapshots 45_supported_fmt qcow2 46_supported_os Linux 47 48echo 49echo "creating image" 50 51# With 1k clusters a refcount block contains 512 clusters 52# This makes 512k of the image file covered by a refcount block 53# A refcount table that spans one clusters has 128 refcount 54# tables which makes up 64M in the image file. 55# 56# We use a 36M image, so initially we can be sure that only one cluster is used 57# for the refcount table. On the other hand this is big enough to cause a 58# refcount table growth when rewriting the image after creating one snapshot. 59size=36M 60_make_test_img -o cluster_size=1k $size 61 62# Create two snapshots which fill the image with two different patterns 63echo "creating first snapshot" 64$QEMU_IO -c "aio_write -P 123 0 $size" $TEST_IMG | _filter_qemu_io 65$QEMU_IMG snapshot -c snap1 $TEST_IMG 66echo "creating second snapshot" 67$QEMU_IO -c "aio_write -P 165 0 $size" $TEST_IMG | _filter_qemu_io 68$QEMU_IMG snapshot -c snap2 $TEST_IMG 69 70# Now check the pattern 71echo "checking first snapshot" 72$QEMU_IMG snapshot -a snap1 $TEST_IMG 73$QEMU_IO -c "aio_read -P 123 0 $size" $TEST_IMG | _filter_qemu_io 74echo "checking second snapshot" 75$QEMU_IMG snapshot -a snap2 $TEST_IMG 76$QEMU_IO -c "aio_read -P 165 0 $size" $TEST_IMG | _filter_qemu_io 77 78echo 79echo "checking image for errors" 80_check_test_img 81 82# success, all done 83echo "*** done" 84rm -f $seq.full 85status=0 86