1#!/bin/bash 2# 3# Commit changes to backing file 4# 5# Copyright (C) 2009 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=kwolf@redhat.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27here=`pwd` 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34 rm -f "$TEST_IMG.base" 35 rm -f "$TEST_IMG.orig" 36} 37trap "_cleanup; exit \$status" 0 1 2 3 15 38 39# get standard environment, filters and checks 40. ./common.rc 41. ./common.filter 42. ./common.pattern 43 44# Any format supporting backing files 45_supported_fmt qcow qcow2 vmdk qed 46_supported_proto generic 47_supported_os Linux 48_unsupported_imgopts "subformat=monolithicFlat" \ 49 "subformat=twoGbMaxExtentFlat" \ 50 "subformat=twoGbMaxExtentSparse" 51 52# NFS does not support bdrv_reopen_prepare thus qemu-img commit fails. 53if [ "$IMGPROTO" = "nfs" ]; then 54 _notrun "image protocol $IMGPROTO does not support bdrv_commit" 55fi 56 57TEST_OFFSETS="0 4294967296" 58 59_make_test_img 6G 60 61echo "Filling base image" 62echo 63 64for offset in $TEST_OFFSETS; do 65 # Some clusters with alternating backing file/image file reads 66 io writev $(( offset )) 512 1024 64 67 68 # Complete backing clusters 69 io writev $(( offset + 64 * 1024)) 65536 65536 1 70done 71_check_test_img 72 73echo "Creating test image with backing file" 74echo 75 76mv "$TEST_IMG" "$TEST_IMG.base" 77_make_test_img -b "$TEST_IMG.base" 6G 78 79echo "Filling test image" 80echo 81 82for offset in $TEST_OFFSETS; do 83 # Some clusters with alternating backing file/image file reads 84 io writev $(( offset + 512 )) 512 1024 64 85 86 # Complete test image clusters 87 io writev $(( offset + 64 * 1024 + 65536)) 65536 65536 1 88done 89_check_test_img 90 91$QEMU_IMG commit "$TEST_IMG" 92mv "$TEST_IMG.base" "$TEST_IMG" 93 94echo "Reading from the backing file" 95echo 96 97for offset in $TEST_OFFSETS; do 98 # Some clusters with alternating backing file/image file reads 99 io readv $(( offset )) 512 1024 64 100 io readv $(( offset + 512 )) 512 1024 64 101 102 # Complete test image clusters 103 io readv $(( offset + 64 * 1024)) 65536 65536 1 104 io readv $(( offset + 64 * 1024 + 65536)) 65536 65536 1 105 106 # Empty sectors 107 io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1 108done 109_check_test_img 110 111# success, all done 112echo "*** done" 113rm -f $seq.full 114status=0 115