#!/bin/bash # # When using a backing file for the output image in qemu-img convert, # the backing file clusters must not copied. The data must still be # read correctly. # # Copyright (C) 2009 Red Hat, Inc. # # 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=kwolf@redhat.com seq=`basename $0` echo "QA output created by $seq" here=`pwd` tmp=/tmp/$$ status=1 # failure is the default! _cleanup() { _cleanup_test_img rm -f $TEST_IMG.base rm -f $TEST_IMG.orig } trap "_cleanup; exit \$status" 0 1 2 3 15 # get standard environment, filters and checks . ./common.rc . ./common.filter . ./common.pattern # Any format supporting backing files _supported_fmt qcow qcow2 vmdk qed _supported_proto generic _supported_os Linux TEST_OFFSETS="0 4294967296" CLUSTER_SIZE=65536 _make_test_img 6G echo "Filling base image" echo for offset in $TEST_OFFSETS; do # Some clusters with alternating backing file/image file reads io_pattern writev $(( offset )) 512 1024 64 42 # Complete backing clusters io_pattern writev $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 done _check_test_img echo "Creating test image with backing file" echo mv $TEST_IMG $TEST_IMG.base _make_test_img -b $TEST_IMG.base 6G echo "Filling test image" echo for offset in $TEST_OFFSETS; do # Some clusters with alternating backing file/image file reads io_pattern writev $(( offset + 512 )) 512 1024 64 43 # Complete test image clusters io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 done _check_test_img mv $TEST_IMG $TEST_IMG.orig # Test the conversion twice: One test with the old-style -B option and another # one with -o backing_file for backing_option in "-B $TEST_IMG.base" "-o backing_file=$TEST_IMG.base"; do echo echo Testing conversion with $backing_option | _filter_testdir | _filter_imgfmt echo $QEMU_IMG convert -O $IMGFMT $backing_option $TEST_IMG.orig $TEST_IMG echo "Checking if backing clusters are allocated when they shouldn't" echo for offset in $TEST_OFFSETS; do # Complete backing clusters is_allocated $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 done echo "Reading" echo for offset in $TEST_OFFSETS; do # Some clusters with alternating backing file/image file reads io_pattern readv $(( offset )) 512 1024 64 42 io_pattern readv $(( offset + 512 )) 512 1024 64 43 # Complete test image clusters io_pattern readv $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 # Empty sectors io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1 done _check_test_img done # success, all done echo "*** done" rm -f $seq.full status=0