def test_read_only(self):
for arg in self.path_or_fd(self.mountpoint):
with self.subTest(type=type(arg)):
btrfsutil.set_subvolume_read_only(arg)
self.assertTrue(btrfsutil.get_subvolume_read_only(arg))
self.assertTrue(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, False)
self.assertFalse(btrfsutil.get_subvolume_read_only(arg))
self.assertFalse(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, True)
self.assertTrue(btrfsutil.get_subvolume_read_only(arg))
self.assertTrue(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, False)
def test_read_only(self):
for arg in self.path_or_fd(self.mountpoint):
with self.subTest(type=type(arg)):
btrfsutil.set_subvolume_read_only(arg)
self.assertTrue(btrfsutil.get_subvolume_read_only(arg))
self.assertTrue(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, False)
self.assertFalse(btrfsutil.get_subvolume_read_only(arg))
self.assertFalse(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, True)
self.assertTrue(btrfsutil.get_subvolume_read_only(arg))
self.assertTrue(btrfsutil.subvolume_info(arg).flags & 1)
btrfsutil.set_subvolume_read_only(arg, False)
def test_create_snapshot(self):
subvol = os.path.join(self.mountpoint, 'subvol')
btrfsutil.create_subvolume(subvol)
os.mkdir(os.path.join(subvol, 'dir'))
for i, arg in enumerate(self.path_or_fd(subvol)):
with self.subTest(type=type(arg)):
snapshots_dir = os.path.join(self.mountpoint, 'snapshots{}'.format(i))
os.mkdir(snapshots_dir)
snapshot = os.path.join(snapshots_dir, 'snapshot')
btrfsutil.create_snapshot(subvol, snapshot + '1')
self.assertTrue(btrfsutil.is_subvolume(snapshot + '1'))
self.assertTrue(os.path.exists(os.path.join(snapshot + '1', 'dir')))
btrfsutil.create_snapshot(subvol, (snapshot + '2').encode())
self.assertTrue(btrfsutil.is_subvolume(snapshot + '2'))
self.assertTrue(os.path.exists(os.path.join(snapshot + '2', 'dir')))
if HAVE_PATH_LIKE:
btrfsutil.create_snapshot(subvol, PurePath(snapshot + '3'))
self.assertTrue(btrfsutil.is_subvolume(snapshot + '3'))
self.assertTrue(os.path.exists(os.path.join(snapshot + '3', 'dir')))
nested_subvol = os.path.join(subvol, 'nested')
more_nested_subvol = os.path.join(nested_subvol, 'more_nested')
btrfsutil.create_subvolume(nested_subvol)
btrfsutil.create_subvolume(more_nested_subvol)
os.mkdir(os.path.join(more_nested_subvol, 'nested_dir'))
snapshot = os.path.join(self.mountpoint, 'snapshot')
btrfsutil.create_snapshot(subvol, snapshot + '1')
# Dummy subvolume.
self.assertEqual(os.stat(os.path.join(snapshot + '1', 'nested')).st_ino, 2)
self.assertFalse(os.path.exists(os.path.join(snapshot + '1', 'nested', 'more_nested')))
btrfsutil.create_snapshot(subvol, snapshot + '2', recursive=True)
self.assertTrue(os.path.exists(os.path.join(snapshot + '2', 'nested/more_nested/nested_dir')))
transid = btrfsutil.create_snapshot(subvol, snapshot + '3', recursive=True, no_wait=True)
self.assertTrue(os.path.exists(os.path.join(snapshot + '3', 'nested/more_nested/nested_dir')))
self.assertGreater(transid, 0)
btrfsutil.create_snapshot(subvol, snapshot + '4', read_only=True)
self.assertTrue(btrfsutil.get_subvolume_read_only(snapshot + '4'))
def get_subvolume_from(self, filesystem_path: Path) -> Optional[Subvolume]:
logger = self._logger
if not filesystem_path.exists():
raise SubvolumeError(
f"The '{filesystem_path}' path does not exist!")
if not filesystem_path.is_dir():
raise SubvolumeError(
f"The '{filesystem_path}' path does not represent a directory!"
)
try:
filesystem_path_str = str(filesystem_path)
if btrfsutil.is_subvolume(filesystem_path_str):
subvolume_id = btrfsutil.subvolume_id(filesystem_path_str)
subvolume_path = btrfsutil.subvolume_path(
filesystem_path_str, subvolume_id)
subvolume_read_only = btrfsutil.get_subvolume_read_only(
filesystem_path_str)
subvolume_info = btrfsutil.subvolume_info(
filesystem_path_str, subvolume_id)
self_uuid = default_if_none(
try_convert_bytes_to_uuid(subvolume_info.uuid),
constants.EMPTY_UUID,
)
parent_uuid = default_if_none(
try_convert_bytes_to_uuid(subvolume_info.parent_uuid),
constants.EMPTY_UUID,
)
return Subvolume(
filesystem_path,
subvolume_path,
datetime.fromtimestamp(subvolume_info.otime),
UuidRelation(self_uuid, parent_uuid),
NumIdRelation(subvolume_info.id, subvolume_info.parent_id),
subvolume_read_only,
)
except btrfsutil.BtrfsUtilError as e:
logger.exception("btrfsutil call failed!")
raise SubvolumeError(
f"Could not initialize the subvolume for '{filesystem_path}'!"
) from e
return None
def test_create_snapshot(self):
subvol = os.path.join(self.mountpoint, 'subvol')
btrfsutil.create_subvolume(subvol)
os.mkdir(os.path.join(subvol, 'dir'))
for i, arg in enumerate(self.path_or_fd(subvol)):
with self.subTest(type=type(arg)):
snapshots_dir = os.path.join(self.mountpoint, 'snapshots{}'.format(i))
os.mkdir(snapshots_dir)
snapshot = os.path.join(snapshots_dir, 'snapshot')
btrfsutil.create_snapshot(subvol, snapshot + '1')
self.assertTrue(btrfsutil.is_subvolume(snapshot + '1'))
self.assertTrue(os.path.exists(os.path.join(snapshot + '1', 'dir')))
btrfsutil.create_snapshot(subvol, (snapshot + '2').encode())
self.assertTrue(btrfsutil.is_subvolume(snapshot + '2'))
self.assertTrue(os.path.exists(os.path.join(snapshot + '2', 'dir')))
if HAVE_PATH_LIKE:
btrfsutil.create_snapshot(subvol, PurePath(snapshot + '3'))
self.assertTrue(btrfsutil.is_subvolume(snapshot + '3'))
self.assertTrue(os.path.exists(os.path.join(snapshot + '3', 'dir')))
nested_subvol = os.path.join(subvol, 'nested')
more_nested_subvol = os.path.join(nested_subvol, 'more_nested')
btrfsutil.create_subvolume(nested_subvol)
btrfsutil.create_subvolume(more_nested_subvol)
os.mkdir(os.path.join(more_nested_subvol, 'nested_dir'))
snapshot = os.path.join(self.mountpoint, 'snapshot')
btrfsutil.create_snapshot(subvol, snapshot + '1')
# Dummy subvolume.
self.assertEqual(os.stat(os.path.join(snapshot + '1', 'nested')).st_ino, 2)
self.assertFalse(os.path.exists(os.path.join(snapshot + '1', 'nested', 'more_nested')))
btrfsutil.create_snapshot(subvol, snapshot + '2', recursive=True)
self.assertTrue(os.path.exists(os.path.join(snapshot + '2', 'nested/more_nested/nested_dir')))
transid = btrfsutil.create_snapshot(subvol, snapshot + '3', recursive=True, async_=True)
self.assertTrue(os.path.exists(os.path.join(snapshot + '3', 'nested/more_nested/nested_dir')))
self.assertGreater(transid, 0)
btrfsutil.create_snapshot(subvol, snapshot + '4', read_only=True)
self.assertTrue(btrfsutil.get_subvolume_read_only(snapshot + '4'))