def detach_volume(self, connection_info, instance_name, mountpoint):
"""Detach volume storage to VM instance."""
LOG.debug("Detach_volume: %(instance_name)s, %(mountpoint)s", {
'instance_name': instance_name,
'mountpoint': mountpoint
})
vm_ref = vm_utils.vm_ref_or_raise(self._session, instance_name)
device_number = volume_utils.get_device_number(mountpoint)
vbd_ref = volume_utils.find_vbd_by_number(self._session, vm_ref,
device_number)
if vbd_ref is None:
# NOTE(sirp): If we don't find the VBD then it must have been
# detached previously.
LOG.warning(
_LW('Skipping detach because VBD for %s was '
'not found'), instance_name)
else:
self._detach_vbds_and_srs(vm_ref, [vbd_ref])
LOG.info(
_LI('Mountpoint %(mountpoint)s detached from instance'
' %(instance_name)s'), {
'instance_name': instance_name,
'mountpoint': mountpoint
})
def test_find_vbd_by_number_no_vbds(self):
session = mock.Mock()
session.VM.get_VBDs.return_value = []
result = volume_utils.find_vbd_by_number(session, "vm_ref", 1)
self.assertIsNone(result)
session.VM.get_VBDs.assert_called_once_with("vm_ref")
self.assertFalse(session.VBD.get_userdevice.called)
def test_find_vbd_by_number_no_vbds(self):
session = mock.Mock()
session.VM.get_VBDs.return_value = []
result = volume_utils.find_vbd_by_number(session, "vm_ref", 1)
self.assertIsNone(result)
session.VM.get_VBDs.assert_called_once_with("vm_ref")
self.assertFalse(session.VBD.get_userdevice.called)
def test_find_vbd_by_number_works(self):
session = mock.Mock()
session.VM.get_VBDs.return_value = ["a", "b"]
session.VBD.get_userdevice.return_value = "1"
result = volume_utils.find_vbd_by_number(session, "vm_ref", 1)
self.assertEqual("a", result)
session.VM.get_VBDs.assert_called_once_with("vm_ref")
session.VBD.get_userdevice.assert_called_once_with("a")
def test_find_vbd_by_number_works(self):
session = mock.Mock()
session.VM.get_VBDs.return_value = ["a", "b"]
session.VBD.get_userdevice.return_value = "1"
result = volume_utils.find_vbd_by_number(session, "vm_ref", 1)
self.assertEqual("a", result)
session.VM.get_VBDs.assert_called_once_with("vm_ref")
session.VBD.get_userdevice.assert_called_once_with("a")
def test_find_vbd_by_number_ignores_exception(self):
session = mock.Mock()
session.XenAPI.Failure = test.TestingException
session.VM.get_VBDs.return_value = ["a"]
session.VBD.get_userdevice.side_effect = test.TestingException
result = volume_utils.find_vbd_by_number(session, "vm_ref", 1)
self.assertIsNone(result)
session.VM.get_VBDs.assert_called_once_with("vm_ref")
session.VBD.get_userdevice.assert_called_once_with("a")
def test_find_vbd_by_number_ignores_exception(self):
session = mock.Mock()
session.XenAPI.Failure = test.TestingException
session.VM.get_VBDs.return_value = ["a"]
session.VBD.get_userdevice.side_effect = test.TestingException
result = volume_utils.find_vbd_by_number(session, "vm_ref", 1)
self.assertIsNone(result)
session.VM.get_VBDs.assert_called_once_with("vm_ref")
session.VBD.get_userdevice.assert_called_once_with("a")
def test_find_vbd_by_number_no_matches(self):
session = mock.Mock()
session.VM.get_VBDs.return_value = ["a", "b"]
session.VBD.get_userdevice.return_value = "3"
result = volume_utils.find_vbd_by_number(session, "vm_ref", 1)
self.assertIsNone(result)
session.VM.get_VBDs.assert_called_once_with("vm_ref")
expected = [mock.call("a"), mock.call("b")]
self.assertEqual(expected, session.VBD.get_userdevice.call_args_list)
def test_find_vbd_by_number_no_matches(self):
session = mock.Mock()
session.VM.get_VBDs.return_value = ["a", "b"]
session.VBD.get_userdevice.return_value = "3"
result = volume_utils.find_vbd_by_number(session, "vm_ref", 1)
self.assertIsNone(result)
session.VM.get_VBDs.assert_called_once_with("vm_ref")
expected = [mock.call("a"), mock.call("b")]
self.assertEqual(expected, session.VBD.get_userdevice.call_args_list)
def detach_volume(self, connection_info, instance_name, mountpoint):
"""Detach volume storage to VM instance."""
LOG.debug("Detach_volume: %(instance_name)s, %(mountpoint)s",
{'instance_name': instance_name, 'mountpoint': mountpoint})
vm_ref = vm_utils.vm_ref_or_raise(self._session, instance_name)
device_number = volume_utils.get_device_number(mountpoint)
vbd_ref = volume_utils.find_vbd_by_number(self._session, vm_ref,
device_number)
if vbd_ref is None:
# NOTE(sirp): If we don't find the VBD then it must have been
# detached previously.
LOG.warning(_LW('Skipping detach because VBD for %s was '
'not found'), instance_name)
else:
self._detach_vbds_and_srs(vm_ref, [vbd_ref])
LOG.info(_LI('Mountpoint %(mountpoint)s detached from instance'
' %(instance_name)s'),
{'instance_name': instance_name,
'mountpoint': mountpoint})