Re: [PATCH v7 42/47] iotests: Test that qcow2's data-file is flushed
On 25.06.2020 18:22, Max Reitz wrote: Flushing a qcow2 node must lead to the data-file node being flushed as well. Signed-off-by: Max Reitz --- tests/qemu-iotests/244 | 49 ++ tests/qemu-iotests/244.out | 7 ++ 2 files changed, 56 insertions(+) diff --git a/tests/qemu-iotests/244 b/tests/qemu-iotests/244 index efe3c0428b..f2b2dddf1c 100755 --- a/tests/qemu-iotests/244 +++ b/tests/qemu-iotests/244 @@ -217,6 +217,55 @@ $QEMU_IMG amend -f $IMGFMT -o "data_file=blkdebug::$TEST_IMG.data" "$TEST_IMG" $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n -C "$TEST_IMG.src" "$TEST_IMG" $QEMU_IMG compare -f $IMGFMT -F $IMGFMT "$TEST_IMG.src" "$TEST_IMG" +echo +echo "=== Flushing should flush the data file ===" +echo + +# We are going to flush a qcow2 file with a blkdebug node inserted +# between the qcow2 node and its data file node. The blkdebug node +# will return an error for all flushes and so we if the data file is +# flushed, we will see qemu-io return an error. + +# We need to write something or the flush will not do anything; we +# also need -t writeback so the write is not done as a FUA write +# (which would then fail thanks to the implicit flush) +$QEMU_IO -c 'write 0 512' -c flush \ +-t writeback \ +"json:{ + 'driver': 'qcow2', + 'file': { + 'driver': 'file', + 'filename': '$TEST_IMG' + }, + 'data-file': { + 'driver': 'blkdebug', + 'inject-error': [{ + 'event': 'none', + 'iotype': 'flush' + }], + 'image': { + 'driver': 'file', + 'filename': '$TEST_IMG.data' + } + } + }" \ +| _filter_qemu_io + +result=${PIPESTATUS[0]} +echo + +case $result in +0) +echo "ERROR: qemu-io succeeded, so the data file was not flushed" +;; +1) +echo "Success: qemu-io failed, so the data file was flushed" +;; +*) +echo "ERROR: qemu-io returned unknown exit code $result" +;; +esac + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/244.out b/tests/qemu-iotests/244.out index dbab7359a9..7269b4295a 100644 --- a/tests/qemu-iotests/244.out +++ b/tests/qemu-iotests/244.out @@ -131,4 +131,11 @@ Offset Length Mapped to File Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data Images are identical. Images are identical. + +=== Flushing should flush the data file === + +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 *** done Reviewed-by: Andrey Shinkevich
[PATCH v7 42/47] iotests: Test that qcow2's data-file is flushed
Flushing a qcow2 node must lead to the data-file node being flushed as well. Signed-off-by: Max Reitz --- tests/qemu-iotests/244 | 49 ++ tests/qemu-iotests/244.out | 7 ++ 2 files changed, 56 insertions(+) diff --git a/tests/qemu-iotests/244 b/tests/qemu-iotests/244 index efe3c0428b..f2b2dddf1c 100755 --- a/tests/qemu-iotests/244 +++ b/tests/qemu-iotests/244 @@ -217,6 +217,55 @@ $QEMU_IMG amend -f $IMGFMT -o "data_file=blkdebug::$TEST_IMG.data" "$TEST_IMG" $QEMU_IMG convert -f $IMGFMT -O $IMGFMT -n -C "$TEST_IMG.src" "$TEST_IMG" $QEMU_IMG compare -f $IMGFMT -F $IMGFMT "$TEST_IMG.src" "$TEST_IMG" +echo +echo "=== Flushing should flush the data file ===" +echo + +# We are going to flush a qcow2 file with a blkdebug node inserted +# between the qcow2 node and its data file node. The blkdebug node +# will return an error for all flushes and so we if the data file is +# flushed, we will see qemu-io return an error. + +# We need to write something or the flush will not do anything; we +# also need -t writeback so the write is not done as a FUA write +# (which would then fail thanks to the implicit flush) +$QEMU_IO -c 'write 0 512' -c flush \ +-t writeback \ +"json:{ + 'driver': 'qcow2', + 'file': { + 'driver': 'file', + 'filename': '$TEST_IMG' + }, + 'data-file': { + 'driver': 'blkdebug', + 'inject-error': [{ + 'event': 'none', + 'iotype': 'flush' + }], + 'image': { + 'driver': 'file', + 'filename': '$TEST_IMG.data' + } + } + }" \ +| _filter_qemu_io + +result=${PIPESTATUS[0]} +echo + +case $result in +0) +echo "ERROR: qemu-io succeeded, so the data file was not flushed" +;; +1) +echo "Success: qemu-io failed, so the data file was flushed" +;; +*) +echo "ERROR: qemu-io returned unknown exit code $result" +;; +esac + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/244.out b/tests/qemu-iotests/244.out index dbab7359a9..7269b4295a 100644 --- a/tests/qemu-iotests/244.out +++ b/tests/qemu-iotests/244.out @@ -131,4 +131,11 @@ Offset Length Mapped to File Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 data_file=TEST_DIR/t.IMGFMT.data Images are identical. Images are identical. + +=== Flushing should flush the data file === + +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 *** done -- 2.26.2