def stop_lpar(self, instance_name, timeout=30):
"""Stop a running LPAR.
:param instance_name: LPAR instance name
:param timeout: value in seconds for specifying
how long to wait for the LPAR to stop
"""
cmd = self.command.chsysstate('-r lpar -o shutdown --immed -n %s' %
instance_name)
self.run_vios_command(cmd)
# poll instance until stopped or raise exception
lpar_obj = self.get_lpar(instance_name)
wait_inc = 1 # seconds to wait between status polling
start_time = time.time()
while lpar_obj['state'] != 'Not Activated':
curr_time = time.time()
# wait up to (timeout) seconds for shutdown
if (curr_time - start_time) > timeout:
raise exception.PowerVMLPAROperationTimeout(
operation='stop_lpar',
instance_name=instance_name)
time.sleep(wait_inc)
lpar_obj = self.get_lpar(instance_name)
def _poll_for_lpar_status(self, instance_name, status, operation,
timeout=constants.POWERVM_LPAR_OPERATION_TIMEOUT):
"""Polls until the LPAR with the given name reaches the given status.
:param instance_name: LPAR instance name
:param status: Poll until the given LPAR status is reached
:param operation: The operation being performed, e.g. 'stop_lpar'
:param timeout: The number of seconds to wait.
:raises: PowerVMLPARInstanceNotFound
:raises: PowerVMLPAROperationTimeout
:raises: InvalidParameterValue
"""
# make sure it's a valid status
if (status == constants.POWERVM_NOSTATE or
not status in constants.POWERVM_POWER_STATE):
msg = _("Invalid LPAR state: %s") % status
raise n_exc.InvalidParameterValue(err=msg)
# raise the given timeout exception if the loop call doesn't complete
# in the specified timeout
timeout_exception = exception.PowerVMLPAROperationTimeout(
operation=operation,
instance_name=instance_name)
with eventlet_timeout.Timeout(timeout, timeout_exception):
def _wait_for_lpar_status(instance_name, status):
"""Called at an interval until the status is reached."""
lpar_obj = self.get_lpar(instance_name)
if lpar_obj['state'] == status:
raise loopingcall.LoopingCallDone()
timer = loopingcall.FixedIntervalLoopingCall(_wait_for_lpar_status,
instance_name, status)
timer.start(interval=1).wait()