def get_disk_info(args, image_info):
disk_info = {
"provisioned_size": image_info["virtual-size"],
"initial_size": None,
"backup": types.DiskBackup.INCREMENTAL if args.enable_backup else None
}
disk_format = args.disk_format or image_info["format"]
# Convert qemu format names to oVirt constants ("raw", "cow").
if disk_format == "raw":
disk_info["format"] = types.DiskFormat.RAW
elif disk_format == "qcow2":
disk_info["format"] = types.DiskFormat.COW
# Create disk name from image name and disk format.
basename = os.path.splitext(os.path.basename(args.ova_disk_name))[0]
disk_info["name"] = "{}.{}".format(basename, disk_format)
# The initial size is needed only when creating sparse qcow2 image on block
# storage. On file storage the initial size is ignored.
if args.disk_sparse and disk_format == "qcow2":
measure = client.measure(
args.ova_file, disk_format, member=args.ova_disk_name)
disk_info["initial_size"] = measure["required"]
return disk_info
def test_measure_to_qcow2(tmpdir, fmt, compressed):
# Create temporary file with some data.
size = 2 * 1024**2
tmp = str(tmpdir.join("tmp"))
with open(tmp, "wb") as f:
f.truncate(size)
f.write(b"x" * CLUSTER_SIZE)
# Created test image from temporary file.
img = str(tmpdir.join("img"))
qemu_img.convert(tmp, img, "raw", fmt, compressed=compressed)
measure = client.measure(img, "qcow2")
assert measure["required"] == 393216
def test_measure_from_ova(tmpdir, compressed, fmt):
# Create temporary file with some data.
size = 2 * 1024**2
tmp = str(tmpdir.join("tmp"))
with open(tmp, "wb") as f:
f.truncate(size)
f.write(b"x" * CLUSTER_SIZE)
# Created test image from temporary file.
img = str(tmpdir.join("img"))
qemu_img.convert(tmp, img, "raw", "qcow2", compressed=compressed)
# Measure the image.
img_measure = client.measure(img, fmt)
# We don't add member info if member was not specified.
assert "member-offset" not in img_measure
assert "member-size" not in img_measure
# Add test image to ova.
member = os.path.basename(img)
ova = str(tmpdir.join("ova"))
with tarfile.open(ova, "w") as tar:
tar.add(img, arcname=member)
# Measure the image from the ova.
ova_measure = client.measure(ova, fmt, member=member)
# Measurement from ova should be same.
assert ova_measure["required"] == img_measure["required"]
assert ova_measure["fully-allocated"] == img_measure["fully-allocated"]
# If member was specified, we report also the offset and size.
with tarfile.open(ova) as tar:
member_info = tar.getmember(member)
assert ova_measure["member-offset"] == member_info.offset_data
assert ova_measure["member-size"] == member_info.size