def check_backingfile(self):
error_context.context(
"check image('%s') backing file" % self.image_filename,
logging.info)
out = self.get_info()
try:
backingfile = re.search(r'backing file: +(.*)', out, re.M).group(1)
if not self.base_tag or self.base_tag == "null":
msg = ("Expected backing file is null")
msg += " Actual backing file: %s" % backingfile
raise exceptions.TestFail(msg)
else:
base_params = self.params.object_params(self.base_tag)
base_image_repr = qemu_storage.get_image_repr(
self.base_tag, base_params, self.root_dir)
if base_image_repr != backingfile:
msg = ("Expected backing file: %s" %
self.base_image_filename)
msg += " Actual backing file: %s" % backingfile
raise exceptions.TestFail(msg)
except AttributeError:
if self.base_tag and self.base_tag != "null":
msg = ("Could not find backing file for image '%s'" %
self.image_filename)
raise exceptions.TestFail(msg)
def __init__(self, params, local_image):
super(QemuNBDExportImage, self).__init__(params, local_image)
self._qemu_nbd = utils_misc.get_qemu_nbd_binary(self._params)
filename_repr = 'json' if self._image_params.get(
'nbd_export_format') == 'luks' else 'filename'
self._local_filename = qemu_storage.get_image_repr(
self._tag, self._image_params, data_dir.get_data_dir(),
filename_repr)
self._nbd_server_pid = None
def verify_backing_file(image):
"""Verify image backing file."""
info_output = json.loads(image.info(output="json"))
backing_params = image.params.object_params(image.base_tag)
backing_file = qemu_storage.get_image_repr(image.base_tag,
backing_params, root_dir)
backing_file_info = info_output["backing-filename"]
if backing_file != backing_file_info:
err_msg = "backing file mismatch, got %s, expected %s." % \
(backing_file_info, backing_file)
raise ValueError(err_msg)
def verify_backing_chain(info):
"""Verify image's backing chain."""
for image, img_info in zip(images, reversed(info)):
base_image = None
if image.base_tag:
base_params = params.object_params(image.base_tag)
base_image = qemu_storage.get_image_repr(image.base_tag,
base_params, root_dir)
base_image_from_info = img_info.get("full-backing-filename")
if base_image != base_image_from_info:
test.fail(("backing chain check for image %s failed, backing"
" file from info is %s, which should be %s.") %
(image.image_filename, base_image_from_info,
base_image))
def _verify_image_backing_file(info_output, base):
"""Verify backing image filename and format."""
backing_filename = info_output["backing-filename"]
backing_format = info_output.get("backing-filename-format")
backing_filename_desired = qemu_storage.get_image_repr(
base.tag, params, root_dir)
if backing_filename != backing_filename_desired:
test.fail("backing image name mismatch, got %s, expect %s" %
(backing_filename, backing_filename_desired))
if backing_format:
backing_format_desired = base.image_format
if backing_format != backing_format_desired:
test.fail("backing image format mismatch, got %s, expect %s" %
(backing_format, backing_format_desired))
def verify_qemu_img_info_backing_chain(output):
"""Verify qemu-img info output for this case."""
def _get_compat_version():
"""Get compat version from params."""
return params.get("qcow2_compatible", "1.1")
logging.info("Verify snapshot's backing file information.")
for image, img_info in zip(images, reversed(output)):
# skip base layer
if not image.base_tag:
continue
base_params = params.object_params(image.base_tag)
base_image = qemu_storage.get_image_repr(image.base_tag,
base_params, root_dir)
base_format = image.base_format
compat = _get_compat_version()
base_image_info = img_info.get("backing-filename")
assert base_image == base_image_info, "backing image mismatches"
if base_image_info and not base_image_info.startswith("json"):
base_format_info = img_info.get("backing-filename-format")
assert base_format == base_format_info, \
"backing format mismatches"
compat_info = img_info["format-specific"]["data"]["compat"]
assert compat == compat_info, "compat mode mismatches"
