openstack team mailing list archive

[Michael Pittaro <mikeyp@xxxxxxxxxxxxxxxxxxx>]

The clean_file_locks.py script should do the job safely -  it only
removes locks for processes which no longer exist.

Usually, if a lock was left behind, then a process somewhere also
failed, so check for that as well.

mike

On Sat, Apr 14, 2012 at 6:55 PM, Nathanael Burton
<nathanael.i.burton@xxxxxxxxx> wrote:
> Salman,
>
> The location for the locks is determined by the --lock_path setting in
> nova.conf.  This is apparently set to the base path where the nova
> python code lives ($pybasedir) in devstack:
>
> 2012-04-14 21:35:42 DEBUG nova.service [-] lock_path : /opt/stack/nova
> from (pid=3700) wait /opt/stack/nova/nova/service.py:442
>
> Since, that directory has a bunch of important files in it, certainly
> don't follow my previous advice and remove all the files in that
> directory.  There is a bug
> (https://bugs.launchpad.net/nova/+bug/785955) about nova not cleaning
> up locks that should have been fixed in essex-4.  As part of the fix
> to that Mike Pittaro wrote a cleanup locks script that should be in
> /opt/stack/nova/tools/clean_file_locks.py.  Try running that and let
> us know if that fixed it.  If not look for *.lock files in
> /opt/stack/nova
>
> Thanks,
>
> Nate
>
> On Sat, Apr 14, 2012 at 9:07 PM, Salman Malik <salmanmk@xxxxxxxx> wrote:
>> Thanks Nate for the quick reply.
>> There is no such directory on the system (I am using devstack if that
>> helps...)
>>
>> Thanks,
>> Salman
>>
>> ________________________________
>> Date: Sat, 14 Apr 2012 21:00:39 -0400
>> Subject: Re: [Openstack] nova-network service stuck
>> From: nathanael.i.burton@xxxxxxxxx
>> To: salmanmk@xxxxxxxx
>> CC: openstack@xxxxxxxxxxxxxxxxxxx
>>
>>
>> Check in Nova's lock dir, on my system it's /var/lib/nova/tmp. Remove any
>> files in there and restart the services.
>> Nate
>> On Apr 14, 2012 8:56 PM, "Salman Malik" <salmanmk@xxxxxxxx> wrote:
>>
>> Hi All,
>>
>> I am having problem with getting nova-service to work. The last line that is
>> shown on the screen is: "2012-04-14 19:42:39 DEBUG nova.utils [-] Attempting
>> to grab file lock "iptables" for method "apply"... from (pid=3649) inner
>> /opt/stack/nova/nova/utils.py:936" and the service is stuck at this point.
>> So when I do a nova-manage service list, network service turns out to be
>> unhappy. I haven't found much help on how to 'unlock' iptables file.
>>
>> Thoughts please ?
>>
>> Salman
>>
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