cells v1: error when reporting child cell capacity: "TypeError: unsupported operand type(s) for *: 'NoneType' and 'int'"

[Matt Riedemann]

http://logs.openstack.org/27/408727/3/check/gate-tempest-dsvm-cells-ubuntu-xenial/e788689/logs/screen-n-cell-child.txt.gz?level=TRACE

2016-12-09 21:25:50.743 23726 ERROR nova Traceback (most recent call last):
2016-12-09 21:25:50.743 23726 ERROR nova File "/usr/local/bin/nova-cells", line 10, in <module>
2016-12-09 21:25:50.743 23726 ERROR nova sys.exit(main())
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/cmd/cells.py", line 43, in main
2016-12-09 21:25:50.743 23726 ERROR nova manager='nova.cells.manager.CellsManager')
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/service.py", line 228, in create
2016-12-09 21:25:50.743 23726 ERROR nova periodic_interval_max=periodic_interval_max)
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/service.py", line 101, in __init__
2016-12-09 21:25:50.743 23726 ERROR nova self.manager = manager_class(host=self.host, *args, **kwargs)
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/cells/manager.py", line 82, in __init__
2016-12-09 21:25:50.743 23726 ERROR nova self.state_manager = cell_state_manager()
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/cells/state.py", line 146, in __new__
2016-12-09 21:25:50.743 23726 ERROR nova return CellStateManagerDB(cell_state_cls)
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/cells/state.py", line 162, in __init__
2016-12-09 21:25:50.743 23726 ERROR nova self._cell_data_sync(force=True)
2016-12-09 21:25:50.743 23726 ERROR nova File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 271, in inner
2016-12-09 21:25:50.743 23726 ERROR nova return f(*args, **kwargs)
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/cells/state.py", line 453, in _cell_data_sync
2016-12-09 21:25:50.743 23726 ERROR nova self._update_our_capacity(ctxt)
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/cells/state.py", line 285, in _update_our_capacity
2016-12-09 21:25:50.743 23726 ERROR nova _get_compute_hosts()
2016-12-09 21:25:50.743 23726 ERROR nova File "/opt/stack/new/nova/nova/cells/state.py", line 279, in _get_compute_hosts
2016-12-09 21:25:50.743 23726 ERROR nova free_disk = compute.free_disk_gb * 1024
2016-12-09 21:25:50.743 23726 ERROR nova TypeError: unsupported operand type(s) for *: 'NoneType' and 'int'
2016-12-09 21:25:50.743 23726 ERROR nova

[int32bit (int32bit)]

I'm not really sure what the root cause is, but I think the most direct way is to check the value whether is None or not.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/409501
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=58bf5d005394d2b31bab9e8971e765c35974ca07
Submitter: Jenkins
Branch: master

commit 58bf5d005394d2b31bab9e8971e765c35974ca07
Author: int32bit <email address hidden>
Date: Sun Dec 11 15:08:45 2016 +0800

    Fix error if free_disk_gb is None in CellStateManager

    The field 'free_disk_gb' in Objects.ComputeNode can be nullable.
    In CellStateManager._get_compute_hosts, we compute free_disk_mb
    by 'free_disk_gb * 1024'. If the free_disk_gb is None, it will raise
    a TypeError exception because None type can't multiply by an integer.
    We should check this value, and if it's None, we just let it return
    zero.

    Closes-Bug: #1648983

    Change-Id: I558d544ff838807c1d605cb5ed8d0e0fa97ab00e

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova 15.0.0.0b3 development milestone.