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 generic 46_supported_os Linux 47_unsupported_qemu_io_options --nocache 48 49size=128M 50 51echo 52echo "== Checking that image is clean on shutdown ==" 53 54IMGOPTS="compat=1.1,lazy_refcounts=on" 55_make_test_img $size 56 57$QEMU_IO -c "write -P 0x5a 0 512" $TEST_IMG | _filter_qemu_io 58 59# The dirty bit must not be set 60./qcow2.py $TEST_IMG dump-header | grep incompatible_features 61_check_test_img 62 63echo 64echo "== Creating a dirty image file ==" 65 66IMGOPTS="compat=1.1,lazy_refcounts=on" 67_make_test_img $size 68 69old_ulimit=$(ulimit -c) 70ulimit -c 0 # do not produce a core dump on abort(3) 71$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" $TEST_IMG | _filter_qemu_io 72ulimit -c "$old_ulimit" 73 74# The dirty bit must be set 75./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./qcow2.py $TEST_IMG dump-header | grep incompatible_features 85 86echo 87echo "== Repairing the image file must succeed ==" 88 89$QEMU_IMG check -r all $TEST_IMG 90 91# The dirty bit must not be set 92./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 102IMGOPTS="compat=1.1,lazy_refcounts=on" 103_make_test_img $size 104 105old_ulimit=$(ulimit -c) 106ulimit -c 0 # do not produce a core dump on abort(3) 107$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" $TEST_IMG | _filter_qemu_io 108ulimit -c "$old_ulimit" 109 110# The dirty bit must be set 111./qcow2.py $TEST_IMG dump-header | grep incompatible_features 112 113$QEMU_IO -c "write 0 512" $TEST_IMG | _filter_qemu_io 114 115# The dirty bit must not be set 116./qcow2.py $TEST_IMG dump-header | grep incompatible_features 117 118echo 119echo "== Creating an image file with lazy_refcounts=off ==" 120 121IMGOPTS="compat=1.1,lazy_refcounts=off" 122_make_test_img $size 123 124old_ulimit=$(ulimit -c) 125ulimit -c 0 # do not produce a core dump on abort(3) 126$QEMU_IO -c "write -P 0x5a 0 512" -c "abort" $TEST_IMG | _filter_qemu_io 127ulimit -c "$old_ulimit" 128 129# The dirty bit must not be set since lazy_refcounts=off 130./qcow2.py $TEST_IMG dump-header | grep incompatible_features 131_check_test_img 132 133# success, all done 134echo "*** done" 135rm -f $seq.full 136status=0 137 138