1#!/bin/bash 2# 3# Simple backing file reads 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 $seq" 26 27here=`pwd` 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33} 34trap "_cleanup; exit \$status" 0 1 2 3 15 35 36# get standard environment, filters and checks 37. ./common.rc 38. ./common.filter 39. ./common.pattern 40 41# Any format supporting backing files 42_supported_fmt qcow qcow2 vmdk qed 43_supported_proto generic 44_unsupported_proto vxhs 45_supported_os Linux 46_unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat" 47 48TEST_OFFSETS="0 4294967296" 49 50TEST_IMG_SAVE=$TEST_IMG 51TEST_IMG=$TEST_IMG.base 52_make_test_img 6G 53 54echo "Filling base image" 55echo 56 57for offset in $TEST_OFFSETS; do 58 # Some clusters with alternating backing file/image file reads 59 io writev $(( offset )) 512 1024 64 60 61 # Complete backing clusters 62 io writev $(( offset + 64 * 1024)) 65536 65536 1 63done 64_check_test_img 65 66echo "Creating test image with backing file" 67echo 68 69TEST_IMG=$TEST_IMG_SAVE 70_make_test_img -b "$TEST_IMG.base" 6G 71 72echo "Filling test image" 73echo 74 75for offset in $TEST_OFFSETS; do 76 # Some clusters with alternating backing file/image file reads 77 io writev $(( offset + 512 )) 512 1024 64 78 79 # Complete test image clusters 80 io writev $(( offset + 64 * 1024 + 65536)) 65536 65536 1 81done 82_check_test_img 83 84echo "Reading" 85echo 86 87for offset in $TEST_OFFSETS; do 88 # Some clusters with alternating backing file/image file reads 89 io readv $(( offset )) 512 1024 64 90 io readv $(( offset + 512 )) 512 1024 64 91 92 # Complete test image clusters 93 io readv $(( offset + 64 * 1024)) 65536 65536 1 94 io readv $(( offset + 64 * 1024 + 65536)) 65536 65536 1 95 96 # Empty sectors 97 io_zero readv $(( offset + 64 * 1024 + 65536 * 4 )) 65536 65536 1 98done 99_check_test_img 100 101# success, all done 102echo "*** done" 103rm -f $seq.full 104status=0 105