4 # Test reading dirty bitmap over NBD
6 # Copyright (C) 2018-2020 Red Hat, Inc.
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.
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.
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/>.
23 echo "QA output created by $seq"
25 status=1 # failure is the default!
34 trap "_cleanup; exit \$status" 0 1 2 3 15
36 # get standard environment, filters and checks
43 _supported_proto file # uses NBD as well
45 # Persistent dirty bitmaps require compat=1.1
46 _unsupported_imgopts 'compat=0.10'
51 $QEMU -nographic -qmp stdio -serial none "$@"
57 do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp \
58 | _filter_qemu | _filter_imgfmt \
59 | _filter_actual_image_size
63 echo "=== Create partially sparse image, then add dirty bitmaps ==="
66 # Two bitmaps, to contrast granularity issues
67 # Also note that b will be disabled, while b2 is left enabled, to
68 # check for read-only interactions
69 _make_test_img -o cluster_size=4k 4M
70 $QEMU_IO -c 'w -P 0x11 1M 2M' "$TEST_IMG" | _filter_qemu_io
72 { "execute": "qmp_capabilities" }
73 { "execute": "blockdev-add",
79 "filename": "$TEST_IMG"
83 { "execute": "block-dirty-bitmap-add",
91 { "execute": "block-dirty-bitmap-add",
103 echo "=== Write part of the file under active bitmap ==="
106 $QEMU_IO -c 'w -P 0x22 512 512' -c 'w -P 0x33 2M 2M' "$TEST_IMG" \
110 echo "=== End dirty bitmaps, and start serving image over NBD ==="
113 _launch_qemu -object iothread,id=io0 2> >(_filter_nbd)
115 # Intentionally provoke some errors as well, to check error handling
117 _send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return"
118 _send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
119 "arguments":{"driver":"qcow2", "node-name":"n",
120 "file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return"
121 _send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
122 "arguments":{"node":"n", "name":"b"}}' "return"
123 _send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
124 "arguments":{"driver":"null-co", "node-name":"null",
125 "size": 4194304}}' "return"
126 _send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-add",
127 "arguments":{"node":"null", "name":"b3"}}' "return"
129 for attempt in normal iothread; do
132 echo "=== Set up NBD with $attempt access ==="
134 if [ $attempt = iothread ]; then
135 _send_qemu_cmd $QEMU_HANDLE '{"execute":"x-blockdev-set-iothread",
136 "arguments":{"node-name":"n", "iothread":"io0"}}' "return"
139 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
140 "arguments":{"device":"n"}}' "error" # Attempt add without server
141 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
142 "arguments":{"addr":{"type":"unix",
143 "data":{"path":"'"$SOCK_DIR/nbd"'"}}}}' "return"
144 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
145 "arguments":{"addr":{"type":"unix",
146 "data":{"path":"'"$SOCK_DIR/nbd"1'"}}}}' "error" # Attempt second server
147 $QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
148 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
149 "arguments":{"device":"n", "bitmap":"b"}}' "return"
150 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
151 "arguments":{"device":"nosuch"}}' "error" # Attempt to export missing node
152 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
153 "arguments":{"device":"n"}}' "error" # Attempt to export same name twice
154 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
155 "arguments":{"device":"n", "name":"n2",
156 "bitmap":"b2"}}' "error" # enabled vs. read-only
157 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
158 "arguments":{"device":"n", "name":"n2",
159 "bitmap":"b3"}}' "error" # Missing bitmap
160 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
161 "arguments":{"device":"n", "name":"n2", "writable":true,
162 "description":"some text", "bitmap":"b2"}}' "return"
163 _send_qemu_cmd $QEMU_HANDLE '{"execute":"block-export-add",
164 "arguments":{"type": "nbd", "node-name":"n", "id":"n3", "name": "n3",
165 "bitmaps":[{"node":"null","name":"b3"}]}}' "return"
166 $QEMU_NBD_PROG -L -k "$SOCK_DIR/nbd"
169 echo "=== Contrast normal status to large granularity dirty-bitmap ==="
172 QEMU_IO_OPTIONS=$QEMU_IO_OPTIONS_NO_FMT
173 IMG="driver=nbd,export=n,server.type=unix,server.path=$SOCK_DIR/nbd"
174 $QEMU_IO -r -c 'r -P 0x22 512 512' -c 'r -P 0 512k 512k' -c 'r -P 0x11 1m 1m' \
175 -c 'r -P 0x33 2m 2m' --image-opts "$IMG" | _filter_qemu_io
176 $QEMU_IMG map --output=json --image-opts \
177 "$IMG" | _filter_qemu_img_map
178 $QEMU_IMG map --output=json --image-opts \
179 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
182 echo "=== Contrast to small granularity dirty-bitmap ==="
185 IMG="driver=nbd,export=n2,server.type=unix,server.path=$SOCK_DIR/nbd"
186 $QEMU_IMG map --output=json --image-opts \
187 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
190 echo "=== Check bitmap taken from another node ==="
193 IMG="driver=nbd,export=n3,server.type=unix,server.path=$SOCK_DIR/nbd"
194 $QEMU_IMG map --output=json --image-opts \
195 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b3" | _filter_qemu_img_map
198 echo "=== End qemu NBD server ==="
201 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
202 "arguments":{"name":"n"}}' "return"
203 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
204 "arguments":{"name":"n2"}}' "return"
205 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
206 "arguments":{"name":"n2"}}' "error" # Attempt duplicate clean
207 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return"
208 _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "error" # Again
212 _send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return"
213 wait=yes _cleanup_qemu
216 echo "=== Use qemu-nbd as server ==="
219 nbd_server_start_unix_socket -r -f $IMGFMT -B b "$TEST_IMG"
220 IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"
221 $QEMU_IMG map --output=json --image-opts \
222 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b" | _filter_qemu_img_map
224 nbd_server_start_unix_socket -f $IMGFMT -B b2 "$TEST_IMG"
225 IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"
226 $QEMU_IMG map --output=json --image-opts --max-length=12345 \
227 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map
228 $QEMU_IMG map --output=json --image-opts --start-offset=12345 \
229 "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map