244 - OpenGrok cross reference for /openbmc/qemu/tests/qemu-iotests/244

4 # Test qcow2 with external data files
33     _rm_test_img "$TEST_IMG.data"
46 # External data files do not work with compat=0.10, and because we use
47 # our own external data file, we cannot let the user specify one
51 echo "=== Create and open image with external data file ==="
54 echo "With data file name in the image:"
55 _make_test_img -o "data_file=$TEST_IMG.data" 64M
58 $QEMU_IO -c "open $TEST_IMG" -c "read -P 0 0 64k" 2>&1 | _filter_qemu_io | _filter_testdir
59 $QEMU_IO -c "open -odata-file.filename=$TEST_IMG.data $TEST_IMG" -c "read -P 0 0 64k" 2>&1 | _filte…
60 $QEMU_IO -c "open -odata-file.filename=inexistent $TEST_IMG" -c "read -P 0 0 64k" 2>&1 | _filter_qe…
63 echo "Data file required, but without data file name in the image:"
64 $QEMU_IMG amend -odata_file= $TEST_IMG
66 $QEMU_IO -c "open $TEST_IMG" -c "read -P 0 0 64k" 2>&1 | _filter_qemu_io | _filter_testdir
67 $QEMU_IO -c "open -odata-file.filename=$TEST_IMG.data $TEST_IMG" -c "read -P 0 0 64k" 2>&1 | _filte…
68 $QEMU_IO -c "open -odata-file.filename=inexistent $TEST_IMG" -c "read -P 0 0 64k" 2>&1 | _filter_qe…
71 echo "Setting data-file for an image with internal data:"
74 $QEMU_IO -c "open -odata-file.filename=$TEST_IMG.data $TEST_IMG" -c "read -P 0 0 64k" 2>&1 | _filte…
75 $QEMU_IO -c "open -odata-file.filename=inexistent $TEST_IMG" -c "read -P 0 0 64k" 2>&1 | _filter_qe…
81 echo "Convert to compressed target with data file:"
84 $QEMU_IO -c 'write -P 0x11 0 1M' \
85          -f $IMGFMT "$TEST_IMG.src" |
88 $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -c -odata_file="$TEST_IMG.data" \
92 echo "Convert uncompressed, then write compressed data manually:"
93 $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -odata_file="$TEST_IMG.data" \
97 $QEMU_IO -c 'write -c -P 0x22 0 1M' \
98          -f $IMGFMT "$TEST_IMG" |
105 $QEMU_IMG snapshot -c test "$TEST_IMG"
109 echo "=== Standalone image with external data file (efficient) ==="
112 _make_test_img -o "data_file=$TEST_IMG.data" 64M
114 echo -n "qcow2 file size before I/O: "
115 du -b $TEST_IMG | cut -f1
118 # 0-1 MB: Unallocated
119 # 1-2 MB: Written (pattern 0x11)
120 # 2-3 MB: Discarded
121 # 3-4 MB: Zero write over discarded space
122 # 4-5 MB: Zero write over written space
123 # 5-6 MB: Zero write over unallocated space
126 $QEMU_IO -c 'write -P 0x11 1M 4M' \
127          -c 'discard 2M 2M' \
128          -c 'write -z 3M 3M' \
129          -f $IMGFMT "$TEST_IMG" |
134 $QEMU_IMG map --output=json "$TEST_IMG"
137 $QEMU_IO -c 'read -P 0 0 1M' \
138          -c 'read -P 0x11 1M 1M' \
139          -c 'read -P 0 2M 4M' \
140          -f $IMGFMT "$TEST_IMG" |
144 # stale data in the external data file
146 $QEMU_IO -c 'read -P 0 0 1M' \
147          -c 'read -P 0x11 1M 1M' \
148          -c 'read -P 0x11 4M 1M' \
149          -c 'read -P 0 5M 1M' \
150          -f raw "$TEST_IMG.data" |
154 echo -n "qcow2 file size after I/O: "
155 du -b $TEST_IMG | cut -f1
158 echo "=== Standalone image with external data file (valid raw) ==="
161 _make_test_img -o "data_file=$TEST_IMG.data,data_file_raw=on" 64M
163 echo -n "qcow2 file size before I/O: "
164 du -b $TEST_IMG | cut -f1
167 $QEMU_IO -c 'write -P 0x11 1M 4M' \
168          -c 'discard 2M 2M' \
169          -c 'write -z 3M 3M' \
170          -f $IMGFMT "$TEST_IMG" |
175 $QEMU_IMG map --output=json "$TEST_IMG"
178 $QEMU_IO -c 'read -P 0 0 1M' \
179          -c 'read -P 0x11 1M 1M' \
180          -c 'read -P 0 2M 4M' \
181          -f $IMGFMT "$TEST_IMG" |
185 # they can contain stale data in the external data file.  Instead, zero
186 # clusters must be zeroed in the external data file too.
188 $QEMU_IO -c 'read -P 0 0 1M' \
189          -c 'read -P 0x11 1M 1M' \
190          -c 'read -P 0 3M 3M' \
191          -f raw "$TEST_IMG".data |
194 echo -n "qcow2 file size after I/O: "
195 du -b $TEST_IMG | cut -f1
201 _make_test_img -o "data_file=$TEST_IMG.data" 64M
203 $QEMU_IO -c 'write -P 0x11 0 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io
204 $QEMU_IO -c 'read -P 0x11 0 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io
205 $QEMU_IMG map --output=human "$TEST_IMG" | _filter_testdir
206 $QEMU_IMG map --output=json "$TEST_IMG"
213 _make_test_img -o "data_file=$TEST_IMG.data" 64M
214 $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n -C "$TEST_IMG.src" "$TEST_IMG"
215 $QEMU_IMG compare -f $IMGFMT -F $IMGFMT "$TEST_IMG.src" "$TEST_IMG"
224     'data-file': {
228             'filename': '$TEST_IMG.data'
232 $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n -C "$TEST_IMG.src" "$test_img_with_blkdebug"
233 $QEMU_IMG compare -f $IMGFMT -F $IMGFMT "$TEST_IMG.src" "$test_img_with_blkdebug"
236 echo "=== Flushing should flush the data file ==="
240 # between the qcow2 node and its data file node.  The blkdebug node
241 # will return an error for all flushes and so we if the data file is
242 # flushed, we will see qemu-io return an error.
244 # We need to write something or the flush will not do anything; we
245 # also need -t writeback so the write is not done as a FUA write
247 $QEMU_IO -c 'write 0 512' -c flush \
248     -t writeback \
255          'data-file': {
257              'inject-error': [{
263                  'filename': '$TEST_IMG.data'
274         echo "ERROR: qemu-io succeeded, so the data file was not flushed"
277         echo "Success: qemu-io failed, so the data file was flushed"
280         echo "ERROR: qemu-io returned unknown exit code $result"
285 echo '=== Preallocation with data-file-raw ==='
288 echo '--- Using a non-zeroed data file ---'
290 # Using data-file-raw must enforce at least metadata preallocation so
294 # Pre-create the data file, write some data.  Real-world use cases for
296 # the device as the data file) or adding qcow2 features to pre-existing
298 truncate -s 1M "$TEST_IMG.data"
299 $QEMU_IO -f raw -c 'write -P 42 0 1M' "$TEST_IMG.data" | _filter_qemu_io
301 # We cannot use qemu-img to create the qcow2 image, because it would
302 # clear the data file.  Use the blockdev-create job instead, which will
306     -blockdev file,node-name=data,filename="$TEST_IMG.data" \
307     -blockdev file,node-name=meta,filename="$TEST_IMG"
312     '{ "execute": "blockdev-create",
314            "job-id": "create",
319                "data-file": "data",
320                "data-file-raw": true
325     '{ "execute": "job-dismiss", "arguments": { "id": "create" } }' \
333 # Reading from either the qcow2 file or the data file should return
335 $QEMU_IO -f raw -c 'read -P 42 0 1M' "$TEST_IMG.data" | _filter_qemu_io
336 $QEMU_IO -f $IMGFMT -c 'read -P 42 0 1M' "$TEST_IMG" | _filter_qemu_io
339 $QEMU_IMG compare -f raw "$TEST_IMG.data" "$TEST_IMG"
342 echo '--- Truncation (growing) ---'
344 # Append some new data to the raw file, then resize the qcow2 image
345 # accordingly and see whether the new data is visible.  Technically
347 truncate -s 2M "$TEST_IMG.data"
348 $QEMU_IO -f raw -c 'write -P 84 1M 1M' "$TEST_IMG.data" | _filter_qemu_io
355 $QEMU_IO -f raw -c 'read -P 42 0 1M' -c 'read -P 84 1M 1M' "$TEST_IMG.data" \
357 $QEMU_IO -f $IMGFMT -c 'read -P 42 0 1M' -c 'read -P 84 1M 1M' "$TEST_IMG" \
360 $QEMU_IMG compare -f raw "$TEST_IMG.data" "$TEST_IMG"
363 echo '--- Giving a backing file at runtime ---'
365 # qcow2 files with data-file-raw cannot have backing files given by
367 # runtime -- it should not have any effect, though (because reading
368 # from the qcow2 node should return the same data as reading from the
371 _make_test_img -o "data_file=$TEST_IMG.data,data_file_raw=on" 1M
374 # Write something that is not zero into the base image
375 $QEMU_IO -c 'write -P 42 0 1M' "$TEST_IMG.base" | _filter_qemu_io
378 echo 'Comparing qcow2 image and raw data file:'
380 # $TEST_IMG and $TEST_IMG.data must show the same data at all times;
383 $QEMU_IMG compare --image-opts \
384     "driver=raw,file.filename=$TEST_IMG.data"  \
389 rm -f $seq.full