def __init__(self, instance=None, disk_name=None, path=None):
self.ephemeral_key_uuid = instance.get('ephemeral_key_uuid')
if self.ephemeral_key_uuid is not None:
self.key_manager = keymgr.API(CONF)
else:
self.key_manager = None
if path:
if self.ephemeral_key_uuid is None:
info = lvm.volume_info(path)
self.vg = info['VG']
self.lv = info['LV']
else:
self.vg = CONF.libvirt.images_volume_group
else:
if not CONF.libvirt.images_volume_group:
raise RuntimeError(
_('You should specify'
' images_volume_group'
' flag to use LVM images.'))
self.vg = CONF.libvirt.images_volume_group
self.lv = '%s_%s' % (instance.uuid, self.escape(disk_name))
if self.ephemeral_key_uuid is None:
path = os.path.join('/dev', self.vg, self.lv)
else:
self.lv_path = os.path.join('/dev', self.vg, self.lv)
path = '/dev/mapper/' + dmcrypt.volume_name(self.lv)
super(Lvm, self).__init__(path,
"block",
"raw",
instance,
is_block_dev=True)
# TODO(pbrady): possibly deprecate libvirt.sparse_logical_volumes
# for the more general preallocate_images
self.sparse = CONF.libvirt.sparse_logical_volumes
self.preallocate = not self.sparse
if not self.sparse:
self.driver_io = "native"
def __init__(self, connection_info, **kwargs):
self._key_manager = keymgr.API()
self.encryption_key_id = kwargs.get('encryption_key_id')