def test_is_compatible_file_system_ext4(self, mock_get_fs_type): #pylint: disable=unused-argument
"""Check non-zfs file systems pass compatiblilty checks"""
with tempfile.NamedTemporaryFile("w+",
prefix="testfile_",
delete=True,
dir=".",
suffix=".img") as fobj:
self.assertTrue(BmapHelpers.is_compatible_file_system(fobj.name))
def test_is_compatible_file_system_zfs_invalid(self, mock_get_fs_type): #pylint: disable=unused-argument
"""Check compatiblilty check fails when zfs param is set incorrectly"""
with tempfile.NamedTemporaryFile("w+", prefix="testfile_",
delete=True, dir=".", suffix=".img") as fobj:
fobj.write("0")
fobj.flush()
mockobj = mock.patch.object(BmapHelpers, "ZFS_COMPAT_PARAM_PATH", fobj.name)
with mockobj:
self.assertFalse(BmapHelpers.is_compatible_file_system(fobj.name))
def __init__(self, image):
"""
Initialize a class instance. The 'image' argument is full path to the
file or file object to operate on.
"""
self._f_image_needs_close = False
if hasattr(image, "fileno"):
self._f_image = image
self._image_path = image.name
else:
self._image_path = image
self._open_image_file()
try:
self.image_size = os.fstat(self._f_image.fileno()).st_size
except IOError as err:
raise Error("cannot get information about file '%s': %s" %
(self._f_image.name, err))
try:
self.block_size = BmapHelpers.get_block_size(self._f_image)
except IOError as err:
raise Error("cannot get block size for '%s': %s" %
(self._image_path, err))
self.blocks_cnt = (self.image_size + self.block_size -
1) // self.block_size
try:
self._f_image.flush()
except IOError as err:
raise Error("cannot flush image file '%s': %s" %
(self._image_path, err))
try:
os.fsync(self._f_image.fileno()),
except OSError as err:
raise Error("cannot synchronize image file '%s': %s " %
(self._image_path, err.strerror))
if not BmapHelpers.is_compatible_file_system(self._image_path):
fstype = BmapHelpers.get_file_system_type(self._image_path)
raise Error(
"image file on incompatible file system '%s': '%s': see docs for fix"
% (self._image_path, fstype))
_log.debug("opened image \"%s\"" % self._image_path)
_log.debug("block size %d, blocks count %d, image size %d" %
(self.block_size, self.blocks_cnt, self.image_size))