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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 23 owner=kwolf@redhat.com 24 25 seq=$(basename $0) 26 echo "QA output created by $seq" 27 28 status=1 # failure is the default! 29 30 _cleanup() 31 { 32 _cleanup_test_img 33 _rm_test_img "$TEST_IMG.data" 34 } 35 trap "_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 49 for 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 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high" 63 64 done 65 66 for mode in off metadata falloc full; do 67 68 echo 69 echo "=== External data file: preallocation=$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 86 done 87 88 # success, all done 89 echo "*** done" 90 rm -f $seq.full 91 status=0