def detach_volume(self, connection_info, instance, mountpoint,
                      encryption=None):
        self._volumeops.detach_volume(connection_info,
                                      instance['name'],
                                      mountpoint)
Detach volume storage from VM instance.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/virt/xenapi/driver.py/XenAPIDriver.detach_volume