xref: /qemu/tests/qemu-iotests/243 (revision 407fb56a) 
1#!/usr/bin/env bash
2#
3# Test qcow2 preallocation
4#
5# Copyright (C) 2019 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
27status=1	# failure is the default!
28
29_cleanup()
30{
31    _cleanup_test_img
32    rm -f $TEST_IMG.data
33}
34trap "_cleanup; exit \$status" 0 1 2 3 15
35
36# get standard environment, filters and checks
37. ./common.rc
38. ./common.filter
39
40_supported_fmt qcow2
41_supported_proto file
42_supported_os Linux
43# External data files do not work with compat=0.10
44_unsupported_imgopts 'compat=0.10'
45
46for mode in off metadata falloc full; do
47
48    echo
49    echo "=== preallocation=$mode ==="
50    echo
51
52    _make_test_img -o "preallocation=$mode" 64M
53
54    printf "File size: "
55    du -b $TEST_IMG | cut -f1
56
57    # Can't use precise numbers here because they differ between filesystems
58    printf "Disk usage: "
59    [ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high"
60
61done
62
63for mode in off metadata falloc full; do
64
65    echo
66    echo "=== External data file: preallocation=$mode ==="
67    echo
68
69    _make_test_img -o "data_file=$TEST_IMG.data,preallocation=$mode" 64M
70
71    echo -n "qcow2 file size: "
72    du -b $TEST_IMG | cut -f1
73    echo -n "data file size:  "
74    du -b $TEST_IMG.data | cut -f1
75
76    # Can't use precise numbers here because they differ between filesystems
77    echo -n "qcow2 disk usage: "
78    [ $(du -B1 $TEST_IMG | cut -f1) -lt 1048576 ] && echo "low" || echo "high"
79    echo -n "data disk usage:  "
80    [ $(du -B1 $TEST_IMG.data | cut -f1) -lt 1048576 ] && echo "low" || echo "high"
81
82done
83
84# success, all done
85echo "*** done"
86rm -f $seq.full
87status=0
88