diff options
| -rwxr-xr-x | tests/qemu-iotests/244 | 104 | ||||
| -rw-r--r-- | tests/qemu-iotests/244.out | 59 |
2 files changed, 163 insertions, 0 deletions
diff --git a/tests/qemu-iotests/244 b/tests/qemu-iotests/244 index a46b441627..3e61fa25bb 100755 --- a/tests/qemu-iotests/244 +++ b/tests/qemu-iotests/244 @@ -38,6 +38,7 @@ 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 @@ -267,6 +268,109 @@ case $result in ;; esac +echo +echo '=== Preallocation with data-file-raw ===' + +echo +echo '--- Using a non-zeroed data file ---' + +# Using data-file-raw must enforce at least metadata preallocation so +# that it does not matter whether one reads the raw file or the qcow2 +# file + +# Pre-create the data file, write some data. Real-world use cases for +# this are adding a qcow2 metadata file to a block device (i.e., using +# the device as the data file) or adding qcow2 features to pre-existing +# raw images (e.g. because the user now wants persistent dirty bitmaps). +truncate -s 1M "$TEST_IMG.data" +$QEMU_IO -f raw -c 'write -P 42 0 1M' "$TEST_IMG.data" | _filter_qemu_io + +# We cannot use qemu-img to create the qcow2 image, because it would +# clear the data file. Use the blockdev-create job instead, which will +# only format the qcow2 image file. +touch "$TEST_IMG" +_launch_qemu \ + -blockdev file,node-name=data,filename="$TEST_IMG.data" \ + -blockdev file,node-name=meta,filename="$TEST_IMG" + +_send_qemu_cmd $QEMU_HANDLE '{ "execute": "qmp_capabilities" }' 'return' + +_send_qemu_cmd $QEMU_HANDLE \ + '{ "execute": "blockdev-create", + "arguments": { + "job-id": "create", + "options": { + "driver": "qcow2", + "size": '"$((1 * 1024 * 1024))"', + "file": "meta", + "data-file": "data", + "data-file-raw": true + } } }' \ + '"status": "concluded"' + +_send_qemu_cmd $QEMU_HANDLE \ + '{ "execute": "job-dismiss", "arguments": { "id": "create" } }' \ + 'return' + +_cleanup_qemu + +echo +echo 'Comparing pattern:' + +# Reading from either the qcow2 file or the data file should return +# the same result: +$QEMU_IO -f raw -c 'read -P 42 0 1M' "$TEST_IMG.data" | _filter_qemu_io +$QEMU_IO -f $IMGFMT -c 'read -P 42 0 1M' "$TEST_IMG" | _filter_qemu_io + +# For good measure +$QEMU_IMG compare -f raw "$TEST_IMG.data" "$TEST_IMG" + +echo +echo '--- Truncation (growing) ---' + +# Append some new data to the raw file, then resize the qcow2 image +# accordingly and see whether the new data is visible. Technically +# that is not allowed, but it is reasonable behavior, so test it. +truncate -s 2M "$TEST_IMG.data" +$QEMU_IO -f raw -c 'write -P 84 1M 1M' "$TEST_IMG.data" | _filter_qemu_io + +$QEMU_IMG resize "$TEST_IMG" 2M + +echo +echo 'Comparing pattern:' + +$QEMU_IO -f raw -c 'read -P 42 0 1M' -c 'read -P 84 1M 1M' "$TEST_IMG.data" \ + | _filter_qemu_io +$QEMU_IO -f $IMGFMT -c 'read -P 42 0 1M' -c 'read -P 84 1M 1M' "$TEST_IMG" \ + | _filter_qemu_io + +$QEMU_IMG compare -f raw "$TEST_IMG.data" "$TEST_IMG" + +echo +echo '--- Giving a backing file at runtime ---' + +# qcow2 files with data-file-raw cannot have backing files given by +# their image header, but qemu will allow you to set a backing node at +# runtime -- it should not have any effect, though (because reading +# from the qcow2 node should return the same data as reading from the +# raw node). + +_make_test_img -o "data_file=$TEST_IMG.data,data_file_raw=on" 1M +TEST_IMG="$TEST_IMG.base" _make_test_img 1M + +# Write something that is not zero into the base image +$QEMU_IO -c 'write -P 42 0 1M' "$TEST_IMG.base" | _filter_qemu_io + +echo +echo 'Comparing qcow2 image and raw data file:' + +# $TEST_IMG and $TEST_IMG.data must show the same data at all times; +# that is, the qcow2 node must not fall through to the backing image +# at any point +$QEMU_IMG compare --image-opts \ + "driver=raw,file.filename=$TEST_IMG.data" \ + "file.filename=$TEST_IMG,backing.file.filename=$TEST_IMG.base" + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/244.out b/tests/qemu-iotests/244.out index 1a3ae31dde..99f56ac18c 100644 --- a/tests/qemu-iotests/244.out +++ b/tests/qemu-iotests/244.out @@ -137,4 +137,63 @@ wrote 512/512 bytes at offset 0 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) Success: qemu-io failed, so the data file was flushed + +=== Preallocation with data-file-raw === + +--- Using a non-zeroed data file --- +wrote 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +{ "execute": "qmp_capabilities" } +{"return": {}} +{ "execute": "blockdev-create", + "arguments": { + "job-id": "create", + "options": { + "driver": "IMGFMT", + "size": 1048576, + "file": "meta", + "data-file": "data", + "data-file-raw": true + } } } +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "created", "id": "create"}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "running", "id": "create"}} +{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "waiting", "id": "create"}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "pending", "id": "create"}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "concluded", "id": "create"}} +{ "execute": "job-dismiss", "arguments": { "id": "create" } } +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "null", "id": "create"}} +{"return": {}} + +Comparing pattern: +read 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Images are identical. + +--- Truncation (growing) --- +wrote 1048576/1048576 bytes at offset 1048576 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Image resized. + +Comparing pattern: +read 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 1048576/1048576 bytes at offset 1048576 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 1048576/1048576 bytes at offset 1048576 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +Images are identical. + +--- Giving a backing file at runtime --- +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 data_file=TEST_DIR/t.IMGFMT.data data_file_raw=on +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=1048576 +wrote 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +Comparing qcow2 image and raw data file: +Images are identical. *** done |