1#!/bin/bash 2# 3# When using a backing file for the output image in qemu-img convert, 4# the backing file clusters must not copied. The data must still be 5# read correctly. 6# 7# Copyright (C) 2009 Red Hat, Inc. 8# 9# This program is free software; you can redistribute it and/or modify 10# it under the terms of the GNU General Public License as published by 11# the Free Software Foundation; either version 2 of the License, or 12# (at your option) any later version. 13# 14# This program is distributed in the hope that it will be useful, 15# but WITHOUT ANY WARRANTY; without even the implied warranty of 16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17# GNU General Public License for more details. 18# 19# You should have received a copy of the GNU General Public License 20# along with this program. If not, see <http://www.gnu.org/licenses/>. 21# 22 23# creator 24owner=kwolf@redhat.com 25 26seq=`basename $0` 27echo "QA output created by $seq" 28 29here=`pwd` 30tmp=/tmp/$$ 31status=1 # failure is the default! 32 33_cleanup() 34{ 35 _cleanup_test_img 36 rm -f $TEST_IMG.base 37 rm -f $TEST_IMG.orig 38} 39trap "_cleanup; exit \$status" 0 1 2 3 15 40 41# get standard environment, filters and checks 42. ./common.rc 43. ./common.filter 44. ./common.pattern 45 46# Any format supporting backing files 47_supported_fmt qcow qcow2 vmdk qed 48_supported_proto generic 49_supported_os Linux 50 51TEST_OFFSETS="0 4294967296" 52CLUSTER_SIZE=65536 53 54_make_test_img 6G 55 56echo "Filling base image" 57echo 58 59for offset in $TEST_OFFSETS; do 60 # Some clusters with alternating backing file/image file reads 61 io_pattern writev $(( offset )) 512 1024 64 42 62 63 # Complete backing clusters 64 io_pattern writev $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 65done 66_check_test_img 67 68echo "Creating test image with backing file" 69echo 70 71mv $TEST_IMG $TEST_IMG.base 72_make_test_img -b $TEST_IMG.base 6G 73 74echo "Filling test image" 75echo 76 77for offset in $TEST_OFFSETS; do 78 # Some clusters with alternating backing file/image file reads 79 io_pattern writev $(( offset + 512 )) 512 1024 64 43 80 81 # Complete test image clusters 82 io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 83done 84_check_test_img 85 86mv $TEST_IMG $TEST_IMG.orig 87 88 89 90# Test the conversion twice: One test with the old-style -B option and another 91# one with -o backing_file 92 93for backing_option in "-B $TEST_IMG.base" "-o backing_file=$TEST_IMG.base"; do 94 95 echo 96 echo Testing conversion with $backing_option | _filter_testdir | _filter_imgfmt 97 echo 98 $QEMU_IMG convert -O $IMGFMT $backing_option $TEST_IMG.orig $TEST_IMG 99 100 echo "Checking if backing clusters are allocated when they shouldn't" 101 echo 102 for offset in $TEST_OFFSETS; do 103 # Complete backing clusters 104 is_allocated $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 105 done 106 107 echo "Reading" 108 echo 109 110 for offset in $TEST_OFFSETS; do 111 # Some clusters with alternating backing file/image file reads 112 io_pattern readv $(( offset )) 512 1024 64 42 113 io_pattern readv $(( offset + 512 )) 512 1024 64 43 114 115 # Complete test image clusters 116 io_pattern readv $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 117 io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 118 119 # Empty sectors 120 io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1 121 done 122 _check_test_img 123 124done 125 126# success, all done 127echo "*** done" 128rm -f $seq.full 129status=0 130