cinder drbd volume doesn't handle volumes over 2TB

[Sam Leonard]

Try to create cinder volume bigger than 2.6TB.
Cinder volume exception:

2016-06-13 12:49:31,543 cinder.volume.manager: Flow 'volume_create_manager' (5dbefc52-0b32-4d6c-8206-9e12c11fd2b5) transitioned into state 'REVERTED' from state 'RUNNING'
2016-06-13 12:49:31,544 oslo_messaging.rpc.dispatcher: Exception during message handling: Value -1568669696 out of range for Int32
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 138, in _dispatch_and_reply
    incoming.message))
  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 185, in _dispatch
    return self._do_dispatch(endpoint, method, ctxt, args)
  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 127, in _do_dispatch
    result = func(ctxt, **new_args)
  File "/usr/lib/python2.7/dist-packages/cinder/volume/manager.py", line 630, in create_volume
    _run_flow()
  File "/usr/lib/python2.7/dist-packages/cinder/volume/manager.py", line 617, in _run_flow
    flow_engine.run()
  File "/usr/lib/python2.7/dist-packages/taskflow/engines/action_engine/engine.py", line 230, in run
    for _state in self.run_iter(timeout=timeout):
  File "/usr/lib/python2.7/dist-packages/taskflow/engines/action_engine/engine.py", line 308, in run_iter
    failure.Failure.reraise_if_any(fails)
  File "/usr/lib/python2.7/dist-packages/taskflow/types/failure.py", line 336, in reraise_if_any
    failures[0].reraise()
  File "/usr/lib/python2.7/dist-packages/taskflow/types/failure.py", line 343, in reraise
    six.reraise(*self._exc_info)
  File "/usr/lib/python2.7/dist-packages/taskflow/engines/action_engine/executor.py", line 82, in _execute_task
    result = task.execute(**arguments)
  File "/usr/lib/python2.7/dist-packages/cinder/volume/flows/manager/create_volume.py", line 819, in execute
    **volume_spec)
  File "/usr/lib/python2.7/dist-packages/cinder/volume/flows/manager/create_volume.py", line 797, in _create_raw_volume
    return self.driver.create_volume(volume_ref)
  File "/usr/lib/python2.7/dist-packages/cinder/volume/drivers/drbdmanagedrv.py", line 455, in create_volume
    props)
  File "/usr/lib/python2.7/dist-packages/drbdmanage/clienthelper.py", line 66, in call_or_reconnect
    return fn(*args)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 641, in call_blocking
    message.append(signature=signature, *args)
OverflowError: Value -1568669696 out of range for Int32

Diagnose
The create_volume API call is defined to use “x” for the size; and https://dbus.freedesktop.org/doc/dbus-python/doc/tutorial.html#basic-types says “64-bit signed integer ('x')”.

Cinder-driver issue - uses “int”. That’s 32bit in Python2; but “long” doesn’t exist in Python3, and so upstream won’t take “long”

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/395132

[Sean McGinnis (sean-mcginnis)]

This appears to be an issue in dbus.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Sean McGinnis (<email address hidden>) on branch: master
Review: https://review.openstack.org/395132
Reason: This review is > 4 weeks without comment, and failed Jenkins the last time it was checked. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and leaving a 'recheck' comment to get fresh test results.

[Sean McGinnis (sean-mcginnis)]

Unassigning due to no activity for > 6 months.