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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
#!/usr/bin/env bash
#
# Test reading dirty bitmap over NBD
#
# Copyright (C) 2018-2020 Red Hat, Inc.
#
# 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/>.
#
seq="$(basename $0)"
echo "QA output created by $seq"
status=1 # failure is the default!
_cleanup()
{
nbd_server_stop
_cleanup_test_img
_cleanup_qemu
rm -f "$SOCK_DIR/nbd"
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.qemu
. ./common.nbd
_supported_fmt qcow2
_supported_proto file # uses NBD as well
_supported_os Linux
# Persistent dirty bitmaps require compat=1.1
_unsupported_imgopts 'compat=0.10'
do_run_qemu()
{
echo Testing: "$@"
$QEMU -nographic -qmp stdio -serial none "$@"
echo
}
run_qemu()
{
do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \
| _filter_qemu | _filter_imgfmt \
| _filter_actual_image_size
}
echo
echo "=== Create partially sparse image, then add dirty bitmaps ==="
echo
# Two bitmaps, to contrast granularity issues
# Also note that b will be disabled, while b2 is left enabled, to
# check for read-only interactions
_make_test_img -o cluster_size=4k 4M
$QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io
run_qemu <<EOF
{ "execute": "qmp_capabilities" }
{ "execute": "blockdev-add",
"arguments": {
"driver": "$IMGFMT",
"node-name": "n",
"file": {
"driver": "file",
"filename": "$TEST_IMG"
}
}
}
{ "execute": "block-dirty-bitmap-add",
"arguments": {
"node": "n",
"name": "b",
"persistent": true,
"granularity": 65536
}
}
{ "execute": "block-dirty-bitmap-add",
"arguments": {
"node": "n",
"name": "b2",
"persistent": true,
"granularity": 512
}
}
{ "execute": "quit" }
EOF
echo
echo "=== Write part of the file under active bitmap ==="
echo
$QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \
| _filter_qemu_io
echo
echo "=== End dirty bitmaps, and start serving image over NBD ==="
echo
_launch_qemu -object iothread,id=io0 2> >(_filter_nbd)
# Intentionally provoke some errors as well, to check error handling
silent=
_send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
"arguments":{"driver":"qcow2", "node-name":"n",
"file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
"arguments":{"node":"n", "name":"b"}}' "return"
for attempt in normal iothread; do
echo
echo "=== Set up NBD with $attempt access ==="
echo
if [ $attempt = iothread ]; then
_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-blockdev-set-iothread",
"arguments":{"node-name":"n", "iothread":"io0"}}' "return"
fi
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n"}}' "error" # Attempt add without server
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
"arguments":{"addr":{"type":"unix",
"data":{"path":"'"$SOCK_DIR/nbd"'"}}}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
"arguments":{"addr":{"type":"unix",
"data":{"path":"'"$SOCK_DIR/nbd"1'"}}}}' "error" # Attempt second server
$QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n", "bitmap":"b"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"nosuch"}}' "error" # Attempt to export missing node
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n"}}' "error" # Attempt to export same name twice
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n", "name":"n2",
"bitmap":"b2"}}' "error" # enabled vs. read-only
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n", "name":"n2",
"bitmap":"b3"}}' "error" # Missing bitmap
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n", "name":"n2", "writable":true,
"description":"some text", "bitmap":"b2"}}' "return"
$QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
echo
echo "=== Contrast normal status to large granularity dirty-bitmap ==="
echo
QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
IMG="driver=nbd,export=n,server.type=unix,server.path=$SOCK_DIR/nbd"
$QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \
-c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io
$QEMU_IMG map --output=json --image-opts \
"$IMG" | _filter_qemu_img_map
$QEMU_IMG map --output=json --image-opts \
"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
echo
echo "=== Contrast to small granularity dirty-bitmap ==="
echo
IMG="driver=nbd,export=n2,server.type=unix,server.path=$SOCK_DIR/nbd"
$QEMU_IMG map --output=json --image-opts \
"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
echo
echo "=== End qemu NBD server ==="
echo
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
"arguments":{"name":"n"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
"arguments":{"name":"n2"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
"arguments":{"name":"n2"}}' "error" # Attempt duplicate clean
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "error" # Again
done
_send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return"
wait=yes _cleanup_qemu
echo
echo "=== Use qemu-nbd as server ==="
echo
nbd_server_start_unix_socket -r -f $IMGFMT -B b "$TEST_IMG"
IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"
$QEMU_IMG map --output=json --image-opts \
"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
nbd_server_start_unix_socket -f $IMGFMT -B b2 "$TEST_IMG"
IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"
$QEMU_IMG map --output=json --image-opts --max-length=12345 \
"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
$QEMU_IMG map --output=json --image-opts --start-offset=12345 \
"$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
# success, all done
echo '*** done'
rm -f $seq.full
status=0
|
