nova-network not working with python-lockfile version 0.9.1

[Christian Berendt]

I tried using the latest version of python-lockfile (0.9.1), but there's a problem in nova/utils.py...

---snip---
2011-04-18 16:46:11,715 AUDIT nova [-] Starting network node (version 2011.3-workspace:tarmac-20110415103614-4o0b4a7y19tghcrf)
2011-04-18 16:46:11,730 DEBUG nova.utils [-] Attempting to grab semaphore "iptables" for method "apply"... from (pid=26289) inner /usr/lib64/python2.6/site-packages/nova/utils.py:594
2011-04-18 16:46:11,730 DEBUG nova.utils [-] Attempting to grab file lock "iptables" for method "apply"... from (pid=26289) inner /usr/lib64/python2.6/site-packages/nova/utils.py:599
2011-04-18 16:46:11,731 CRITICAL nova [-] unsupported operand type(s) for &: 'NoneType' and 'int'
(nova): TRACE: Traceback (most recent call last):
(nova): TRACE: File "/usr/bin/nova-network", line 48, in <module>
(nova): TRACE: service.serve()
(nova): TRACE: File "/usr/lib64/python2.6/site-packages/nova/service.py", line 290, in serve
(nova): TRACE: x.start()
(nova): TRACE: File "/usr/lib64/python2.6/site-packages/nova/service.py", line 84, in start
(nova): TRACE: self.manager.init_host()
(nova): TRACE: File "/usr/lib64/python2.6/site-packages/nova/network/manager.py", line 442, in init_host
(nova): TRACE: super(FlatDHCPManager, self).init_host()
(nova): TRACE: File "/usr/lib64/python2.6/site-packages/nova/network/manager.py", line 128, in init_host
(nova): TRACE: self.driver.init_host()
(nova): TRACE: File "/usr/lib64/python2.6/site-packages/nova/network/linux_net.py", line 378, in init_host
(nova): TRACE: iptables_manager.apply()
(nova): TRACE: File "/usr/lib64/python2.6/site-packages/nova/utils.py", line 602, in inner
(nova): TRACE: lock = lockfile.FileLock(lock_file_path)
(nova): TRACE: File "/usr/lib64/python2.6/site-packages/lockfile/__init__.py", line 171, in __init__
(nova): TRACE: self.tname = "-%x" % (ident & 0xffffffff)
(nova): TRACE: TypeError: unsupported operand type(s) for &: 'NoneType' and 'int'
(nova): TRACE:
---snap---

[Ken Pepple (ken-pepple)]

yes, this is a bug in python-lockfile (see http://code.google.com/p/pylockfile/issues/detail?id=8#c6) but we specify using version 0.8 in the tools/pip-requires file so it's not our problem (AFAIK).

[Thierry Carrez (ttx)]

Looks like we could help upstream in reproducing that issue...