#!/bin/bash # # Test qcow2 lazy refcounts # # Copyright (C) 2012 Red Hat, Inc. # Copyright IBM, Corp. 2010 # # Based on test 038. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # # creator owner=stefanha@linux.vnet.ibm.com seq=`basename $0` echo "QA output created by $seq" here=`pwd` tmp=/tmp/$$ status=1 # failure is the default! _cleanup() { _cleanup_test_img } trap "_cleanup; exit \$status" 0 1 2 3 15 # get standard environment, filters and checks . ./common.rc . ./common.filter _supported_fmt qcow2 _supported_proto file _supported_os Linux _default_cache_mode "writethrough" _supported_cache_modes "writethrough" _no_dump_exec() { (ulimit -c 0; exec "$@") } size=128M echo echo "== Checking that image is clean on shutdown ==" IMGOPTS="compat=1.1,lazy_refcounts=on" _make_test_img $size $QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io # The dirty bit must not be set $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features _check_test_img echo echo "== Creating a dirty image file ==" IMGOPTS="compat=1.1,lazy_refcounts=on" _make_test_img $size _no_dump_exec $QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" 2>&1 | _filter_qemu_io # The dirty bit must be set $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features _check_test_img echo echo "== Read-only access must still work ==" $QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io # The dirty bit must be set $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features echo echo "== Repairing the image file must succeed ==" _check_test_img -r all # The dirty bit must not be set $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features echo echo "== Data should still be accessible after repair ==" $QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io echo echo "== Opening a dirty image read/write should repair it ==" IMGOPTS="compat=1.1,lazy_refcounts=on" _make_test_img $size _no_dump_exec $QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" 2>&1 | _filter_qemu_io # The dirty bit must be set $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io # The dirty bit must not be set $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features echo echo "== Creating an image file with lazy_refcounts=off ==" IMGOPTS="compat=1.1,lazy_refcounts=off" _make_test_img $size _no_dump_exec $QEMU_IO -c "write -P 0x5a 0 512" -c "abort" "$TEST_IMG" 2>&1 | _filter_qemu_io # The dirty bit must not be set since lazy_refcounts=off $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features _check_test_img echo echo "== Committing to a backing file with lazy_refcounts=on ==" IMGOPTS="compat=1.1,lazy_refcounts=on" TEST_IMG="$TEST_IMG".base _make_test_img $size IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base" _make_test_img $size $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io $QEMU_IMG commit "$TEST_IMG" # The dirty bit must not be set $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features $PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features _check_test_img TEST_IMG="$TEST_IMG".base _check_test_img # success, all done echo "*** done" rm -f $seq.full status=0