xref: /qemu/tests/qemu-iotests/106 (revision 72c58ff8958f6e00ce361d1d568dc21e41c85f45)
1#!/usr/bin/env bash
2# group: rw quick
3#
4# Test preallocated resize of raw images
5#
6# Copyright (C) 2017 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=hreitz@redhat.com
24
25seq=$(basename $0)
26echo "QA output created by $seq"
27
28status=1	# failure is the default!
29
30_cleanup()
31{
32	_cleanup_test_img
33}
34trap "_cleanup; exit \$status" 0 1 2 3 15
35
36# get standard environment and filters
37. ./common.rc
38. ./common.filter
39
40_supported_fmt raw
41_supported_proto file fuse
42_supported_os Linux
43_require_disk_usage
44
45# in kB
46CREATION_SIZE=128
47GROWTH_SIZE=256
48
49echo '=== Testing image growth ==='
50
51for create_mode in off falloc full; do
52    for growth_mode in off falloc full; do
53        echo
54        echo "--- create_mode=$create_mode growth_mode=$growth_mode ---"
55
56        # Our calculation below assumes kilobytes as unit for the actual size.
57        # Disable the extent size hint because it would give us a result in
58        # megabytes.
59        _make_test_img -o "preallocation=$create_mode,extent_size_hint=0" ${CREATION_SIZE}K
60        $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K
61
62        expected_size=0
63        if [ $create_mode != off ]; then
64            expected_size=$CREATION_SIZE
65        fi
66        if [ $growth_mode != off ]; then
67            expected_size=$((expected_size + $GROWTH_SIZE))
68        fi
69
70        actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size' | head -n 1)
71        actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/')
72
73        # The actual size may exceed the expected size, depending on the file
74        # system. Therefore we just test that the actual size is at least what
75        # we expect.
76        if [ $actual_size -lt $expected_size ]; then
77            echo "ERROR: Image should have at least ${expected_size}K, but has ${actual_size}K"
78        fi
79    done
80done
81
82echo
83echo '=== Testing image shrinking ==='
84
85# None of this should work except for "off", because other modes cannot be used
86# for shrinking
87for growth_mode in falloc full off; do
88    echo
89    echo "--- growth_mode=$growth_mode ---"
90    $QEMU_IMG resize -f "$IMGFMT" --shrink --preallocation=$growth_mode "$TEST_IMG" -${GROWTH_SIZE}K
91done
92
93echo
94echo '=== Testing image growth on 2G empty image ==='
95
96for growth_mode in falloc full; do
97    echo
98    echo "--- growth_mode=$growth_mode ---"
99
100    # Maybe we want to do an lseek() to the end of the file before the
101    # preallocation; if the file has a length of 2 GB, that would
102    # return an integer that overflows to negative when put into a
103    # plain int.  We should use the correct type for the result, and
104    # this tests we do.
105
106    _make_test_img -o "extent_size_hint=0" 2G
107    $QEMU_IMG resize -f "$IMGFMT" --preallocation=$growth_mode "$TEST_IMG" +${GROWTH_SIZE}K
108
109    actual_size=$($QEMU_IMG info -f "$IMGFMT" "$TEST_IMG" | grep 'disk size' | head -n 1)
110    actual_size=$(echo "$actual_size" | sed -e 's/^[^0-9]*\([0-9]\+\).*$/\1/')
111
112    if [ $actual_size -lt $GROWTH_SIZE ]; then
113        echo "ERROR: Image should have at least ${GROWTH_SIZE}K, but has ${actual_size}K"
114    fi
115done
116
117# success, all done
118echo '*** done'
119rm -f $seq.full
120status=0
121