def image_to_raw(image_href, path, path_tmp):
with fileutils.remove_path_on_error(path_tmp):
data = disk_utils.qemu_img_info(path_tmp)
fmt = data.file_format
if fmt is None:
raise exception.ImageUnacceptable(
reason=_("'qemu-img info' parsing failed."),
image_id=image_href)
backing_file = data.backing_file
if backing_file is not None:
raise exception.ImageUnacceptable(
image_id=image_href,
reason=_("fmt=%(fmt)s backed by: %(backing_file)s") %
{'fmt': fmt, 'backing_file': backing_file})
if fmt != "raw":
staged = "%s.converted" % path
LOG.debug("%(image)s was %(format)s, converting to raw",
{'image': image_href, 'format': fmt})
with fileutils.remove_path_on_error(staged):
disk_utils.convert_image(path_tmp, staged, 'raw')
os.unlink(path_tmp)
data = disk_utils.qemu_img_info(staged)
if data.file_format != "raw":
raise exception.ImageConvertFailed(
image_id=image_href,
reason=_("Converted to raw, but format is "
"now %s") % data.file_format)
os.rename(staged, path)
else:
os.rename(path_tmp, path)
def image_to_raw(image_href, path, path_tmp):
with fileutils.remove_path_on_error(path_tmp):
data = disk_utils.qemu_img_info(path_tmp)
fmt = data.file_format
if fmt is None:
raise exception.ImageUnacceptable(
reason=_("'qemu-img info' parsing failed."),
image_id=image_href)
backing_file = data.backing_file
if backing_file is not None:
raise exception.ImageUnacceptable(
image_id=image_href,
reason=_("fmt=%(fmt)s backed by: %(backing_file)s") %
{'fmt': fmt, 'backing_file': backing_file})
if fmt != "raw":
staged = "%s.converted" % path
LOG.debug("%(image)s was %(format)s, converting to raw" %
{'image': image_href, 'format': fmt})
with fileutils.remove_path_on_error(staged):
disk_utils.convert_image(path_tmp, staged, 'raw')
os.unlink(path_tmp)
data = disk_utils.qemu_img_info(staged)
if data.file_format != "raw":
raise exception.ImageConvertFailed(
image_id=image_href,
reason=_("Converted to raw, but format is "
"now %s") % data.file_format)
os.rename(staged, path)
else:
os.rename(path_tmp, path)
def test_qemu_img_info_path_exists(self, path_exists_mock,
qemu_img_info_mock, execute_mock):
disk_utils.qemu_img_info('img')
path_exists_mock.assert_called_once_with('img')
execute_mock.assert_called_once_with('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', 'img')
qemu_img_info_mock.assert_called_once_with('out')
def test_qemu_img_info_path_exists(self, path_exists_mock,
qemu_img_info_mock, execute_mock):
disk_utils.qemu_img_info('img')
path_exists_mock.assert_called_once_with('img')
execute_mock.assert_called_once_with('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', 'img')
qemu_img_info_mock.assert_called_once_with('out')
def image_to_raw(image_href, path, path_tmp):
with fileutils.remove_path_on_error(path_tmp):
fmt = get_source_format(image_href, path_tmp)
if fmt != "raw":
staged = "%s.converted" % path
utils.is_memory_insufficent(raise_if_fail=True)
LOG.debug("%(image)s was %(format)s, converting to raw", {
'image': image_href,
'format': fmt
})
with fileutils.remove_path_on_error(staged):
disk_utils.convert_image(path_tmp, staged, 'raw')
os.unlink(path_tmp)
data = disk_utils.qemu_img_info(staged)
if data.file_format != "raw":
raise exception.ImageConvertFailed(
image_id=image_href,
reason=_("Converted to raw, but format is "
"now %s") % data.file_format)
os.rename(staged, path)
else:
os.rename(path_tmp, path)
def converted_size(path):
"""Get size of converted raw image.
The size of image converted to raw format can be growing up to the virtual
size of the image.
:param path: path to the image file.
:returns: virtual size of the image or 0 if conversion not needed.
"""
data = disk_utils.qemu_img_info(path)
return data.virtual_size
def converted_size(path):
"""Get size of converted raw image.
The size of image converted to raw format can be growing up to the virtual
size of the image.
:param path: path to the image file.
:returns: virtual size of the image or 0 if conversion not needed.
"""
data = disk_utils.qemu_img_info(path)
return data.virtual_size
def get_source_format(image_href, path):
data = disk_utils.qemu_img_info(path)
fmt = data.file_format
if fmt is None:
raise exception.ImageUnacceptable(
reason=_("'qemu-img info' parsing failed."),
image_id=image_href)
backing_file = data.backing_file
if backing_file is not None:
raise exception.ImageUnacceptable(
image_id=image_href,
reason=_("fmt=%(fmt)s backed by: %(backing_file)s") %
{'fmt': fmt, 'backing_file': backing_file})
return fmt
def converted_size(path, estimate=False):
"""Get size of converted raw image.
The size of image converted to raw format can be growing up to the virtual
size of the image.
:param path: path to the image file.
:param estimate: Whether to estimate the size by scaling the
original size
:returns: For `estimate=False`, return the size of the
raw image file. For `estimate=True`, return the size of
the original image scaled by the configuration value
`raw_image_growth_factor`.
"""
data = disk_utils.qemu_img_info(path)
if not estimate:
return data.virtual_size
growth_factor = CONF.raw_image_growth_factor
return int(min(data.disk_size * growth_factor, data.virtual_size))
def test_qemu_img_info_path_doesnt_exist(self, path_exists_mock,
qemu_img_info_mock):
disk_utils.qemu_img_info('noimg')
path_exists_mock.assert_called_once_with('noimg')
qemu_img_info_mock.assert_called_once_with()
def test_qemu_img_info_path_doesnt_exist(self, path_exists_mock,
qemu_img_info_mock):
disk_utils.qemu_img_info('noimg')
path_exists_mock.assert_called_once_with('noimg')
qemu_img_info_mock.assert_called_once_with()
