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qcow2_format.py: dump bitmaps header extension

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Add class for bitmap extension and dump its fields. Further work is to
dump bitmap directory.

Test new functionality inside 291 iotest.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Message-Id: <20200606081806.23897-14-vsementsov@virtuozzo.com>
[eblake: fix iotest output]
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-06-06 11:18:06 +03:00 • committed by Eric Blake
parent aef87784f9
commit 820c6bee53
3 changed files with 70 additions and 9 deletions
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4
tests/qemu-iotests/291
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@ -62,6 +62,8 @@ $QEMU_IO -c 'w 1M 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io
$QEMU_IMG bitmap --disable -f $IMGFMT "$TEST_IMG" b1
$QEMU_IMG bitmap --enable -f $IMGFMT "$TEST_IMG" b2
$QEMU_IO -c 'w 2M 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io
echo "Check resulting qcow2 header extensions:"
$PYTHON qcow2.py "$TEST_IMG" dump-header-exts
echo
echo "=== Bitmap preservation not possible to non-qcow2 ==="
@ -88,6 +90,8 @@ $QEMU_IMG bitmap --merge tmp -f $IMGFMT "$TEST_IMG" b0
$QEMU_IMG bitmap --remove --image-opts \
driver=$IMGFMT,file.driver=file,file.filename="$TEST_IMG" tmp
$QEMU_IMG info "$TEST_IMG" | _filter_img_info --format-specific
echo "Check resulting qcow2 header extensions:"
$PYTHON qcow2.py "$TEST_IMG" dump-header-exts
echo
echo "=== Check bitmap contents ==="