'Creates a group from source.'

def create_group_from_src(self, ctxt, group, volumes, group_snapshot=None, snapshots=None, source_group=None, source_vols=None):

    if volume_utils.is_group_a_cg_snapshot_type(group):
        message = _('create    group    from    source    is    not    supported    for    CoprHD    if    the    group    type    supports    consistent    group    snapshot.')
        raise exception.VolumeBackendAPIException(data=message)
    else:
        raise NotImplementedError()
