blob: a75655b7ef0403990ee72f3d9d652bef0cbce551 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
#!/usr/bin/env bash
# group: rw auto quick
#
# Test for the regression fixed in commit c8bf9a9169
#
# Copyright (C) 2020 Igalia, S.L.
# Author: Alberto Garcia <berto@igalia.com>
# Based on a test case by Maxim Levitsky <mlevitsk@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# creator
owner=berto@igalia.com
seq=`basename $0`
echo "QA output created by $seq"
status=1 # failure is the default!
_cleanup()
{
_cleanup_test_img
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
_supported_fmt qcow2
_supported_proto file
_supported_os Linux
_unsupported_imgopts cluster_size refcount_bits extended_l2 compat=0.10 data_file
# The cluster size must be at least the granularity of the mirror job (4KB)
# Note that larger cluster sizes will produce very large images (several GBs)
cluster_size=4096
refcount_bits=64 # Make it equal to the L2 entry size for convenience
options="cluster_size=${cluster_size},refcount_bits=${refcount_bits}"
# Number of refcount entries per refcount blocks
ref_entries=$(( ${cluster_size} * 8 / ${refcount_bits} ))
# Number of data clusters needed to fill a refcount block
# Equals ${ref_entries} minus two (one L2 table and one refcount block)
data_clusters_per_refblock=$(( ${ref_entries} - 2 ))
# Number of entries in the refcount cache
ref_blocks=4
# Write enough data clusters to fill the refcount cache and allocate
# one more refcount block.
# Subtract 3 clusters from the total: qcow2 header, refcount table, L1 table
total_data_clusters=$(( ${data_clusters_per_refblock} * ${ref_blocks} + 1 - 3 ))
# Total size to write in bytes
total_size=$(( ${total_data_clusters} * ${cluster_size} ))
echo
echo '### Create the image'
echo
TEST_IMG_FILE=$TEST_IMG.base _make_test_img -o $options $total_size | _filter_img_create_size
echo
echo '### Write data to allocate more refcount blocks than the cache can hold'
echo
$QEMU_IO -c "write -P 1 0 $total_size" $TEST_IMG.base | _filter_qemu_io
echo
echo '### Create an overlay'
echo
_make_test_img -F $IMGFMT -b $TEST_IMG.base -o $options | _filter_img_create_size
echo
echo '### Fill the overlay with zeroes'
echo
$QEMU_IO -c "write -z 0 $total_size" $TEST_IMG | _filter_qemu_io
echo
echo '### Commit changes to the base image'
echo
$QEMU_IMG commit $TEST_IMG
echo
echo '### Check the base image'
echo
$QEMU_IMG check $TEST_IMG.base
# success, all done
echo "*** done"
rm -f $seq.full
status=0
|
