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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
#!/usr/bin/env bash
#
# Test drive-mirror with quorum
#
# The goal of this test is to check how the quorum driver reports
# regions that are known to read as zeroes (BDRV_BLOCK_ZERO). The idea
# is that drive-mirror will try the efficient representation of zeroes
# in the destination image instead of writing actual zeroes.
#
# Copyright (C) 2020 Igalia, S.L.
# Author: Alberto Garcia <berto@igalia.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 $seq"
status=1 # failure is the default!
_cleanup()
{
_rm_test_img "$TEST_IMG.0"
_rm_test_img "$TEST_IMG.1"
_rm_test_img "$TEST_IMG.2"
_rm_test_img "$TEST_IMG.3"
_cleanup_qemu
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.qemu
_supported_fmt qcow2
_supported_proto file
_supported_os Linux
_unsupported_imgopts cluster_size data_file
echo
echo '### Create all images' # three source (quorum), one destination
echo
TEST_IMG="$TEST_IMG.0" _make_test_img -o cluster_size=64k 10M
TEST_IMG="$TEST_IMG.1" _make_test_img -o cluster_size=64k 10M
TEST_IMG="$TEST_IMG.2" _make_test_img -o cluster_size=64k 10M
TEST_IMG="$TEST_IMG.3" _make_test_img -o cluster_size=64k 10M
quorum="driver=raw,file.driver=quorum,file.vote-threshold=2"
quorum="$quorum,file.children.0.file.filename=$TEST_IMG.0"
quorum="$quorum,file.children.1.file.filename=$TEST_IMG.1"
quorum="$quorum,file.children.2.file.filename=$TEST_IMG.2"
quorum="$quorum,file.children.0.driver=$IMGFMT"
quorum="$quorum,file.children.1.driver=$IMGFMT"
quorum="$quorum,file.children.2.driver=$IMGFMT"
echo
echo '### Output of qemu-img map (empty quorum)'
echo
$QEMU_IMG map --image-opts $quorum | _filter_qemu_img_map
# Now we write data to the quorum. All three images will read as
# zeroes in all cases, but with different ways to represent them
# (unallocated clusters, zero clusters, data clusters with zeroes)
# that will have an effect on how the data will be mirrored and the
# output of qemu-img map on the resulting image.
echo
echo '### Write data to the quorum'
echo
# Test 1: data regions surrounded by unallocated clusters.
# Three data regions, the largest one (0x30000) will be picked, end result:
# offset 0x10000, length 0x30000 -> data
$QEMU_IO -c "write -P 0 $((0x10000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io
$QEMU_IO -c "write -P 0 $((0x10000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io
$QEMU_IO -c "write -P 0 $((0x10000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io
# Test 2: zero regions surrounded by data clusters.
# First we allocate the data clusters.
$QEMU_IO -c "open -o $quorum" -c "write -P 0 $((0x100000)) $((0x40000))" | _filter_qemu_io
# Three zero regions, the smallest one (0x10000) will be picked, end result:
# offset 0x100000, length 0x10000 -> data
# offset 0x110000, length 0x10000 -> zeroes
# offset 0x120000, length 0x20000 -> data
$QEMU_IO -c "write -z $((0x110000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io
$QEMU_IO -c "write -z $((0x110000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io
$QEMU_IO -c "write -z $((0x110000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io
# Test 3: zero clusters surrounded by unallocated clusters.
# Everything reads as zeroes, no effect on the end result.
$QEMU_IO -c "write -z $((0x150000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io
$QEMU_IO -c "write -z $((0x150000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io
$QEMU_IO -c "write -z $((0x150000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io
# Test 4: mix of data and zero clusters.
# The zero region will be ignored in favor of the largest data region
# (0x20000), end result:
# offset 0x200000, length 0x20000 -> data
$QEMU_IO -c "write -P 0 $((0x200000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io
$QEMU_IO -c "write -z $((0x200000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io
$QEMU_IO -c "write -P 0 $((0x200000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io
# Test 5: write data to a region and then zeroize it, doing it
# directly on the quorum device instead of the individual images.
# This has no effect on the end result but proves that the quorum driver
# supports 'write -z'.
$QEMU_IO -c "open -o $quorum" -c "write -P 1 $((0x250000)) $((0x10000))" | _filter_qemu_io
# Verify the data that we just wrote
$QEMU_IO -c "open -o $quorum" -c "read -P 1 $((0x250000)) $((0x10000))" | _filter_qemu_io
$QEMU_IO -c "open -o $quorum" -c "write -z $((0x250000)) $((0x10000))" | _filter_qemu_io
# Now it should read back as zeroes
$QEMU_IO -c "open -o $quorum" -c "read -P 0 $((0x250000)) $((0x10000))" | _filter_qemu_io
echo
echo '### Launch the drive-mirror job'
echo
qemu_comm_method="qmp" _launch_qemu -drive if=virtio,"$quorum"
h=$QEMU_HANDLE
_send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" 'return'
_send_qemu_cmd $h \
"{'execute': 'drive-mirror',
'arguments': {'device': 'virtio0',
'format': '$IMGFMT',
'target': '$TEST_IMG.3',
'sync': 'full',
'mode': 'existing' }}" \
"BLOCK_JOB_READY.*virtio0"
_send_qemu_cmd $h \
"{ 'execute': 'block-job-complete',
'arguments': { 'device': 'virtio0' } }" \
'BLOCK_JOB_COMPLETED'
_send_qemu_cmd $h "{ 'execute': 'quit' }" ''
echo
echo '### Output of qemu-img map (destination image)'
echo
$QEMU_IMG map "$TEST_IMG.3" | _filter_qemu_img_map
# success, all done
echo "*** done"
rm -f $seq.full
status=0
|
