1#!/bin/bash 2# 3# Test qcow2 lazy refcounts 4# 5# Copyright (C) 2012 Red Hat, Inc. 6# Copyright IBM, Corp. 2010 7# 8# Based on test 038. 9# 10# This program is free software; you can redistribute it and/or modify 11# it under the terms of the GNU General Public License as published by 12# the Free Software Foundation; either version 2 of the License, or 13# (at your option) any later version. 14# 15# This program is distributed in the hope that it will be useful, 16# but WITHOUT ANY WARRANTY; without even the implied warranty of 17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18# GNU General Public License for more details. 19# 20# You should have received a copy of the GNU General Public License 21# along with this program. If not, see <http://www.gnu.org/licenses/>. 22# 23 24# creator 25owner=stefanha@linux.vnet.ibm.com 26 27seq=`basename $0` 28echo "QA output created by $seq" 29 30here=`pwd` 31tmp=/tmp/$$ 32status=1 # failure is the default! 33 34_cleanup() 35{ 36 _cleanup_test_img 37} 38trap "_cleanup; exit \$status" 0 1 2 3 15 39 40# get standard environment, filters and checks 41. ./common.env 42. ./common.rc 43. ./common.filter 44 45_supported_fmt qcow2 46_supported_proto file 47_supported_os Linux 48_default_cache_mode "writethrough" 49_supported_cache_modes "writethrough" 50 51size=128M 52 53echo 54echo "== Checking that image is clean on shutdown ==" 55 56IMGOPTS="compat=1.1,lazy_refcounts=on" 57_make_test_img $size 58 59$QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 60 61# The dirty bit must not be set 62$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 63_check_test_img 64 65echo 66echo "== Creating a dirty image file ==" 67 68IMGOPTS="compat=1.1,lazy_refcounts=on" 69_make_test_img $size 70 71old_ulimit=$(ulimit -c) 72ulimit -c 0 # do not produce a core dump on abort(3) 73$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" | _filter_qemu_io 74ulimit -c "$old_ulimit" 75 76# The dirty bit must be set 77$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 78_check_test_img 79 80echo 81echo "== Read-only access must still work ==" 82 83$QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 84 85# The dirty bit must be set 86$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 87 88echo 89echo "== Repairing the image file must succeed ==" 90 91_check_test_img -r all 92 93# The dirty bit must not be set 94$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 95 96echo 97echo "== Data should still be accessible after repair ==" 98 99$QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 100 101echo 102echo "== Opening a dirty image read/write should repair it ==" 103 104IMGOPTS="compat=1.1,lazy_refcounts=on" 105_make_test_img $size 106 107old_ulimit=$(ulimit -c) 108ulimit -c 0 # do not produce a core dump on abort(3) 109$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" | _filter_qemu_io 110ulimit -c "$old_ulimit" 111 112# The dirty bit must be set 113$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 114 115$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io 116 117# The dirty bit must not be set 118$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 119 120echo 121echo "== Creating an image file with lazy_refcounts=off ==" 122 123IMGOPTS="compat=1.1,lazy_refcounts=off" 124_make_test_img $size 125 126old_ulimit=$(ulimit -c) 127ulimit -c 0 # do not produce a core dump on abort(3) 128$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" | _filter_qemu_io 129ulimit -c "$old_ulimit" 130 131# The dirty bit must not be set since lazy_refcounts=off 132$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 133_check_test_img 134 135echo 136echo "== Committing to a backing file with lazy_refcounts=on ==" 137 138IMGOPTS="compat=1.1,lazy_refcounts=on" 139TEST_IMG="$TEST_IMG".base _make_test_img $size 140 141IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base" 142_make_test_img $size 143 144$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io 145$QEMU_IMG commit "$TEST_IMG" 146 147# The dirty bit must not be set 148$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 149$PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features 150 151_check_test_img 152TEST_IMG="$TEST_IMG".base _check_test_img 153 154 155# success, all done 156echo "*** done" 157rm -f $seq.full 158status=0 159 160