1#!/usr/bin/env bash 2# group: rw backing auto quick 3# 4# When using a backing file for the output image in qemu-img convert, 5# the backing file clusters must not copied. The data must still be 6# read correctly. 7# 8# Copyright (C) 2009 Red Hat, Inc. 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=kwolf@redhat.com 26 27seq=`basename $0` 28echo "QA output created by $seq" 29 30status=1 # failure is the default! 31 32_cleanup() 33{ 34 _cleanup_test_img 35 _rm_test_img "$TEST_IMG.base" 36 _rm_test_img "$TEST_IMG.orig" 37} 38trap "_cleanup; exit \$status" 0 1 2 3 15 39 40# get standard environment, filters and checks 41. ./common.rc 42. ./common.filter 43. ./common.pattern 44 45# Any format supporting backing files 46_supported_fmt qcow qcow2 vmdk qed 47_supported_proto file 48_supported_os Linux 49_unsupported_imgopts "subformat=monolithicFlat" \ 50 "subformat=twoGbMaxExtentFlat" \ 51 "subformat=twoGbMaxExtentSparse" \ 52 "subformat=streamOptimized" 53 54TEST_OFFSETS="0 4294967296" 55CLUSTER_SIZE=65536 56 57TEST_IMG_SAVE="$TEST_IMG" 58TEST_IMG="$TEST_IMG.base" 59 60_make_test_img 6G 61 62echo "Filling base image" 63echo 64 65for offset in $TEST_OFFSETS; do 66 # Some clusters with alternating backing file/image file reads 67 io_pattern writev $(( offset )) 512 1024 64 42 68 69 # Complete backing clusters 70 io_pattern writev $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 71done 72_check_test_img 73 74echo "Creating test image with backing file" 75echo 76 77TEST_IMG="$TEST_IMG_SAVE.orig" 78_make_test_img -b "$TEST_IMG_SAVE.base" -F $IMGFMT 6G 79 80echo "Filling test image" 81echo 82 83for offset in $TEST_OFFSETS; do 84 # Some clusters with alternating backing file/image file reads 85 io_pattern writev $(( offset + 512 )) 512 1024 64 43 86 87 # Complete test image clusters 88 io_pattern writev $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 89done 90_check_test_img 91 92TEST_IMG="$TEST_IMG_SAVE" 93 94# Test the conversion twice: One test with the old-style -B option and another 95# one with -o backing_file 96 97for backing_option in "-B " "-o backing_file="; do 98 99 echo 100 echo Testing conversion with $backing_option"$TEST_IMG.base" | _filter_testdir | _filter_imgfmt 101 echo 102 $QEMU_IMG convert -f $IMGFMT -O $IMGFMT $backing_option"$TEST_IMG.base" \ 103 -o backing_fmt=$IMGFMT "$TEST_IMG.orig" "$TEST_IMG" 104 105 echo "Checking if backing clusters are allocated when they shouldn't" 106 echo 107 for offset in $TEST_OFFSETS; do 108 # Complete backing clusters 109 is_allocated $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 110 done 111 112 echo "Reading" 113 echo 114 115 for offset in $TEST_OFFSETS; do 116 # Some clusters with alternating backing file/image file reads 117 io_pattern readv $(( offset )) 512 1024 64 42 118 io_pattern readv $(( offset + 512 )) 512 1024 64 43 119 120 # Complete test image clusters 121 io_pattern readv $(( offset + 1024 * 1024)) $CLUSTER_SIZE $CLUSTER_SIZE 1 42 122 io_pattern readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE)) $CLUSTER_SIZE $CLUSTER_SIZE 1 43 123 124 # Empty sectors 125 io_zero readv $(( offset + 1024 * 1024 + $CLUSTER_SIZE * 4 )) $CLUSTER_SIZE $CLUSTER_SIZE 1 126 done 127 _check_test_img 128 129done 130 131# success, all done 132echo "*** done" 133rm -f $seq.full 134status=0 135