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 file 49_supported_os Linux 50_unsupported_imgopts "subformat=monolithicFlat" \ 51 "subformat=twoGbMaxExtentFlat" \ 52 "subformat=twoGbMaxExtentSparse" 53 54TEST_OFFSETS="0 4294967296" 55CLUSTER_SIZE=65536 56 57_make_test_img 6G 58 59echo "Filling base image" 60echo 61 62for offset in $TEST_OFFSETS; do 63 # Some clusters with alternating backing file/image file reads 64 io_pattern writev $(( offset )) 512 1024 64 42 65 66 # Complete backing clusters 67 io_pattern writev $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 68done 69_check_test_img 70 71echo "Creating test image with backing file" 72echo 73 74mv "$TEST_IMG" "$TEST_IMG.base" 75_make_test_img -b "$TEST_IMG.base" 6G 76 77echo "Filling test image" 78echo 79 80for offset in $TEST_OFFSETS; do 81 # Some clusters with alternating backing file/image file reads 82 io_pattern writev $(( offset + 512 )) 512 1024 64 43 83 84 # Complete test image clusters 85 io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 86done 87_check_test_img 88 89mv "$TEST_IMG" "$TEST_IMG.orig" 90 91 92 93# Test the conversion twice: One test with the old-style -B option and another 94# one with -o backing_file 95 96for backing_option in "-B " "-o backing_file="; do 97 98 echo 99 echo Testing conversion with $backing_option"$TEST_IMG.base" | _filter_testdir | _filter_imgfmt 100 echo 101 $QEMU_IMG convert -O $IMGFMT $backing_option"$TEST_IMG.base" "$TEST_IMG.orig" "$TEST_IMG" 102 103 echo "Checking if backing clusters are allocated when they shouldn't" 104 echo 105 for offset in $TEST_OFFSETS; do 106 # Complete backing clusters 107 is_allocated $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 108 done 109 110 echo "Reading" 111 echo 112 113 for offset in $TEST_OFFSETS; do 114 # Some clusters with alternating backing file/image file reads 115 io_pattern readv $(( offset )) 512 1024 64 42 116 io_pattern readv $(( offset + 512 )) 512 1024 64 43 117 118 # Complete test image clusters 119 io_pattern readv $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 120 io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 121 122 # Empty sectors 123 io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1 124 done 125 _check_test_img 126 127done 128 129# success, all done 130echo "*** done" 131rm -f $seq.full 132status=0 133