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1#!/usr/bin/env bash 2# group: rw quick 3# 4# Test qcow2 preallocation 5# 6# Copyright (C) 2019 Red Hat, Inc. 7# 8# This program is free software; you can redistribute it and/or modify 9# it under the terms of the GNU General Public License as published by 10# the Free Software Foundation; either version 2 of the License, or 11# (at your option) any later version. 12# 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17# 18# You should have received a copy of the GNU General Public License 19# along with this program. If not, see <http://www.gnu.org/licenses/>. 20# 21 22# creator 23owner=kwolf@redhat.com 24 25seq=$(basename $0) 26echo "QA output created by $seq" 27 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33 _rm_test_img "$TEST_IMG.data" 34} 35trap "_cleanup; exit \$status" 0 1 2 3 15 36 37# get standard environment, filters and checks 38. ./common.rc 39. ./common.filter 40 41_supported_fmt qcow2 42_supported_proto file 43_supported_os Linux 44# External data files do not work with compat=0.10, and because there 45# is an explicit case for external data files here, we cannot allow 46# the user to specify whether to use one 47_unsupported_imgopts 'compat=0.10' data_file 48 49for mode in off metadata falloc full; do 50 51 echo 52 echo "=== preallocation=$mode ===" 53 echo 54 55 _make_test_img -o "preallocation=$mode,extent_size_hint=0" 64M 56 57 printf "File size: " 58 du -b $TEST_IMG | cut -f1 59 60 # Can't use precise numbers here because they differ between filesystems 61 printf "Disk usage: " 62 [ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high" 63 64done 65 66for mode in off metadata falloc full; do 67 68 echo 69 echo "=== External data file: preallocation=$mode ===" 70 echo 71 72 _make_test_img \ 73 -o "data_file=$TEST_IMG.data,preallocation=$mode,extent_size_hint=0" 64M 74 75 echo -n "qcow2 file size: " 76 du -b $TEST_IMG | cut -f1 77 echo -n "data file size: " 78 du -b $TEST_IMG.data | cut -f1 79 80 # Can't use precise numbers here because they differ between filesystems 81 echo -n "qcow2 disk usage: " 82 [ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high" 83 echo -n "data disk usage: " 84 [ $(du -B1 $TEST_IMG.data | cut -f1) -lt 2097152 ] && echo "low" || echo "high" 85 86done 87 88# success, all done 89echo "*** done" 90rm -f $seq.full 91status=0