def suspend():
self.record("GOOD", None,
"suspend.start for %d seconds" % (timeout))
try:
self.run_background(suspend_cmd)
except error.AutoservRunError:
self.record("ABORT", None, "suspend.start",
"suspend command failed")
raise error.AutoservSuspendError("suspend command failed")
# Wait for some time, to ensure the machine is going to sleep.
# Not too long to check if the machine really suspended.
time_slice = min(timeout / 2, 300)
time.sleep(time_slice)
time_counter = time_slice
while time_counter < timeout + 60:
# Check if the machine is back. We check regularely to
# ensure the machine was suspended long enough.
if utils.ping(self.hostname, tries=1, deadline=1) == 0:
return
else:
if time_counter > timeout - 10:
time_slice = 5
time.sleep(time_slice)
time_counter += time_slice
if utils.ping(self.hostname, tries=1, deadline=1) != 0:
raise error.AutoservSuspendError(
"DUT is not responding after %d seconds" % (time_counter))
def verify(self, host):
if host.is_up():
return
msg = 'No answer to ssh from %s'
try:
socket.gethostbyname(host.hostname)
except Exception as e:
logging.exception('DNS lookup failure')
msg = 'Unable to look up %%s in DNS: %s' % e
else:
if utils.ping(host.hostname, tries=1, deadline=1) != 0:
msg = 'No answer to ping from %s'
raise hosts.AutoservVerifyError(msg % host.hostname)
def _diagnose_dut(self, old_boot_id=None):
"""
Run diagnostic checks on a DUT.
1. ping: A dead host will not respond to pings.
2. ssh (happens with 3.): DUT hangs usually fail in authentication
but respond to pings.
3. Check if a reboot occured: A healthy but unexpected reboot leaves the
host running with a new boot id.
This method will always raise an exception from the AutotestFailure
family and should only get called when the reason for a test failing
is ambiguous.
@raises AutotestDeviceNotPingable: If the DUT doesn't respond to ping.
@raises AutotestDeviceNotSSHable: If we cannot SSH into the DUT.
@raises AutotestDeviceRebooted: If the boot id changed.
@raises AutotestAbort: If none of the above exceptions were raised.
Since we have no recourse we must abort at this stage.
"""
msg = 'Autotest client terminated unexpectedly: '
if utils.ping(self.host.hostname, tries=1, deadline=1) != 0:
msg += 'DUT is no longer pingable, it may have rebooted or hung.\n'
raise AutotestDeviceNotPingable(msg)
if old_boot_id:
try:
new_boot_id = self.host.get_boot_id(timeout=60)
except Exception as e:
msg += ('DUT is pingable but not SSHable, it most likely'
' sporadically rebooted during testing. %s\n' % str(e))
raise AutotestDeviceNotSSHable(msg)
else:
if new_boot_id != old_boot_id:
msg += 'DUT rebooted during the test run.\n'
raise AutotestDeviceRebooted(msg)
msg += ('DUT is pingable, SSHable and did NOT restart '
'un-expectedly. We probably lost connectivity during the '
'test.')
else:
msg += ('DUT is pingable, could not determine if an un-expected '
'reboot occured during the test.')
raise AutotestAbort(msg)