def module_to_xapi_vm_power_state(power_state):
    """Maps module VM power states to XAPI VM power states."""
    vm_power_state_map = {'poweredon': 'running', 'poweredoff': 'halted',
        'restarted': 'running', 'suspended': 'suspended', 'shutdownguest':
        'halted', 'rebootguest': 'running'}
    return vm_power_state_map.get(power_state)
