def create_cloned_volume(self, volume, src_vref):
"""Creates cloned volume.
1. Take an internal snapshot of source volume, and attach it.
2. Create a new volume, and attach it.
3. Copy from attached snapshot of step 1 to the volume of step 2.
4. Delete the internal snapshot created in step 1.
"""
src_lun_id = self.get_lun_id(src_vref)
if src_lun_id is None:
raise exception.VolumeBackendAPIException(
data=_("LUN ID of source volume: %s not found.") %
src_vref.name)
src_snap_name = 'snap_clone_%s' % volume.id
create_snap_func = functools.partial(self.client.create_snap,
src_lun_id, src_snap_name)
with utils.assure_cleanup(create_snap_func, self.client.delete_snap,
True) as src_snap:
LOG.debug(
'Internal snapshot for clone is created, '
'name: %(name)s, id: %(id)s.', {
'name': src_snap_name,
'id': src_snap.get_id()
})
return self._create_volume_from_snap(volume,
src_snap,
size_in_m=utils.gib_to_mib(
volume.size))
def create_cloned_volume(self, volume, src_vref):
"""Creates cloned volume.
1. Take an internal snapshot of source volume, and attach it.
2. Create a new volume, and attach it.
3. Copy from attached snapshot of step 1 to the volume of step 2.
4. Delete the internal snapshot created in step 1.
"""
src_lun_id = self.get_lun_id(src_vref)
if src_lun_id is None:
raise exception.VolumeBackendAPIException(
data=_("LUN ID of source volume: %s not found.") %
src_vref.name)
src_snap_name = 'snap_clone_%s' % volume.id
create_snap_func = functools.partial(self.client.create_snap,
src_lun_id, src_snap_name)
with utils.assure_cleanup(create_snap_func,
self.client.delete_snap,
True) as src_snap:
LOG.debug('Internal snapshot for clone is created, '
'name: %(name)s, id: %(id)s.',
{'name': src_snap_name,
'id': src_snap.get_id()})
return self._create_volume_from_snap(
volume, src_snap, size_in_m=utils.gib_to_mib(volume.size))
def test_gib_to_mib(self):
self.assertEqual(5 * units.Gi / units.Mi, utils.gib_to_mib(5))
def test_gib_to_mib(self):
self.assertEqual(5 * units.Gi / units.Mi, utils.gib_to_mib(5))