1#!/usr/bin/env 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 30status=1 # failure is the default! 31 32_cleanup() 33{ 34 _cleanup_test_img 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_supported_fmt qcow2 43_supported_proto file 44_supported_os Linux 45_default_cache_mode writethrough 46_supported_cache_modes writethrough 47# Some of these test cases expect no external data file so that all 48# clusters are part of the qcow2 image and refcounted 49_unsupported_imgopts data_file 50 51size=128M 52 53echo 54echo "== Checking that image is clean on shutdown ==" 55 56_make_test_img -o "compat=1.1,lazy_refcounts=on" $size 57 58$QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 59 60# The dirty bit must not be set 61$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 62_check_test_img 63 64echo 65echo "== Creating a dirty image file ==" 66 67_make_test_img -o "compat=1.1,lazy_refcounts=on" $size 68 69_NO_VALGRIND \ 70$QEMU_IO -c "write -P 0x5a 0 512" \ 71 -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ 72 | _filter_qemu_io 73 74# The dirty bit must be set 75$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 76_check_test_img 77 78echo 79echo "== Read-only access must still work ==" 80 81$QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 82 83# The dirty bit must be set 84$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 85 86echo 87echo "== Repairing the image file must succeed ==" 88 89_check_test_img -r all 90 91# The dirty bit must not be set 92$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 93 94echo 95echo "== Data should still be accessible after repair ==" 96 97$QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io 98 99echo 100echo "== Opening a dirty image read/write should repair it ==" 101 102_make_test_img -o "compat=1.1,lazy_refcounts=on" $size 103 104_NO_VALGRIND \ 105$QEMU_IO -c "write -P 0x5a 0 512" \ 106 -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ 107 | _filter_qemu_io 108 109# The dirty bit must be set 110$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 111 112$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io 113 114# The dirty bit must not be set 115$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 116 117echo 118echo "== Creating an image file with lazy_refcounts=off ==" 119 120_make_test_img -o "compat=1.1,lazy_refcounts=off" $size 121 122_NO_VALGRIND \ 123$QEMU_IO -c "write -P 0x5a 0 512" \ 124 -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ 125 | _filter_qemu_io 126 127# The dirty bit must not be set since lazy_refcounts=off 128$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 129_check_test_img 130 131echo 132echo "== Committing to a backing file with lazy_refcounts=on ==" 133 134TEST_IMG="$TEST_IMG".base _make_test_img -o "compat=1.1,lazy_refcounts=on" $size 135 136_make_test_img -o "compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base" $size 137 138$QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io 139$QEMU_IMG commit "$TEST_IMG" 140 141# The dirty bit must not be set 142$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 143$PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features 144 145_check_test_img 146TEST_IMG="$TEST_IMG".base _check_test_img 147 148echo 149echo "== Changing lazy_refcounts setting at runtime ==" 150 151_make_test_img -o "compat=1.1,lazy_refcounts=off" $size 152 153_NO_VALGRIND \ 154$QEMU_IO -c "reopen -o lazy-refcounts=on" \ 155 -c "write -P 0x5a 0 512" \ 156 -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ 157 | _filter_qemu_io 158 159# The dirty bit must be set 160$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 161_check_test_img 162 163_make_test_img -o "compat=1.1,lazy_refcounts=on" $size 164 165_NO_VALGRIND \ 166$QEMU_IO -c "reopen -o lazy-refcounts=off" \ 167 -c "write -P 0x5a 0 512" \ 168 -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \ 169 | _filter_qemu_io 170 171# The dirty bit must not be set 172$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features 173_check_test_img 174 175 176# success, all done 177echo "*** done" 178rm -f $seq.full 179status=0 180 181