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.rc 42. ./common.filter 43 44_supported_fmt qcow2 45_supported_proto file 46_supported_os Linux 47_default_cache_mode "writethrough" 48_supported_cache_modes "writethrough" 49 50size=128M 51 52echo 53echo "== Checking that image is clean on shutdown ==" 54 55IMGOPTS="compat=1.1,lazy_refcounts=on" 56_make_test_img $size 57 58$QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 59 60# The dirty bit must not be set 61./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 62_check_test_img 63 64echo 65echo "== Creating a dirty image file ==" 66 67IMGOPTS="compat=1.1,lazy_refcounts=on" 68_make_test_img $size 69 70old_ulimit=$(ulimit -c) 71ulimit -c 0 # do not produce a core dump on abort(3) 72$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" | _filter_qemu_io 73ulimit -c "$old_ulimit" 74 75# The dirty bit must be set 76./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 77_check_test_img 78 79echo 80echo "== Read-only access must still work ==" 81 82$QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 83 84# The dirty bit must be set 85./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 86 87echo 88echo "== Repairing the image file must succeed ==" 89 90_check_test_img -r all 91 92# The dirty bit must not be set 93./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 94 95echo 96echo "== Data should still be accessible after repair ==" 97 98$QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 99 100echo 101echo "== Opening a dirty image read/write should repair it ==" 102 103IMGOPTS="compat=1.1,lazy_refcounts=on" 104_make_test_img $size 105 106old_ulimit=$(ulimit -c) 107ulimit -c 0 # do not produce a core dump on abort(3) 108$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" | _filter_qemu_io 109ulimit -c "$old_ulimit" 110 111# The dirty bit must be set 112./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 113 114$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io 115 116# The dirty bit must not be set 117./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 118 119echo 120echo "== Creating an image file with lazy_refcounts=off ==" 121 122IMGOPTS="compat=1.1,lazy_refcounts=off" 123_make_test_img $size 124 125old_ulimit=$(ulimit -c) 126ulimit -c 0 # do not produce a core dump on abort(3) 127$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" | _filter_qemu_io 128ulimit -c "$old_ulimit" 129 130# The dirty bit must not be set since lazy_refcounts=off 131./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 132_check_test_img 133 134echo 135echo "== Committing to a backing file with lazy_refcounts=on ==" 136 137IMGOPTS="compat=1.1,lazy_refcounts=on" 138TEST_IMG="$TEST_IMG".base _make_test_img $size 139 140IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base" 141_make_test_img $size 142 143$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io 144$QEMU_IMG commit "$TEST_IMG" 145 146# The dirty bit must not be set 147./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 148./qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features 149 150_check_test_img 151TEST_IMG="$TEST_IMG".base _check_test_img 152 153 154# success, all done 155echo "*** done" 156rm -f $seq.full 157status=0 158 159