def attach_volume(self, instance, connection_info, ebs_root=False):
"""Attach a volume to the SCSI controller or to the SATA controller if
ebs_root is True.
.. notes:
This action require the instance to be powered off
"""
LOG.debug("Attach_volume: %(connection_info)s to %(instance_name)s",
{'connection_info': connection_info,
'instance_name': instance.name})
if ebs_root:
# Attaching to the first slot of SATA controller
controller = constants.SYSTEM_BUS_SATA.upper()
port, device = (0, 0)
else:
# Attaching to the first available port of SCSI controller
controller = constants.SYSTEM_BUS_SCSI.upper()
port, device = vhdutils.get_available_attach_point(instance,
controller)
try:
self._vbox_manage.scsi_storage_attach(
instance, controller, port, device, connection_info,
self.get_initiator(instance))
except (vbox_exc.VBoxException, exception.InstanceInvalidState) as exc:
with excutils.save_and_reraise_exception():
LOG.error(_LE("Unable to attach volume to "
"instance %(instance)s: %(reason)s"),
{"instance": instance.name, "reason": exc})
self.detach_volume(instance, connection_info)
def test_get_available_attach_point(self, mock_get_controllers):
mock_get_controllers.return_value = {
mock.sentinel.controller: {
(0, 0): {"path": mock.sentinel.path,
"uuid": mock.sentinel.uuid},
(1, 0): {"path": None,
"uuid": None},
}
}
attach_point = vhdutils.get_available_attach_point(
self._instance, mock.sentinel.controller)
self.assertEqual((1, 0), attach_point)
def test_get_available_attach_point(self, mock_get_controllers):
mock_get_controllers.return_value = {
mock.sentinel.controller: {
(0, 0): {
"path": mock.sentinel.path,
"uuid": mock.sentinel.uuid
},
(1, 0): {
"path": None,
"uuid": None
},
}
}
attach_point = vhdutils.get_available_attach_point(
self._instance, mock.sentinel.controller)
self.assertEqual((1, 0), attach_point)
