Unfortunately this is a known issue. We're working on a fix:
https://bugs.launchpad.net/oslo/+bug/1327946
On 08/07/2014 03:57 AM, Alex Xu wrote:
> When I startup nova-network, it stuck at trying get lock for ebtables.
>
> @utils.synchronized('ebtables', external=True)
> def ensure_ebtables_rules(rules, table='filter'):
> .....
>
> Checking the code found that invoke utils.synchronized without parameter
> lock_path, the code will try to use
> posix semaphore.
>
> But posix semaphore won't release even the process crashed. Should we
> fix it? I saw a lot of call for synchronized
> without lock_path.
>
> Thanks
> Alex
>
>
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