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Pavel,

sorry - ignore my previous email and don't run quantum-ovs-cleanup. Steps should be: 

- stop quantum-ovs-plugin-agent
- stop openvswitch services
- start openvswitch services
- start quantum-ovs-plugin-agent

Re, Darragh.
>________________________________
> From: Darragh O'Reilly <dara2002-openstack at yahoo.com>
>To: "openstack at lists.openstack.org" <openstack at lists.openstack.org> 
>Sent: Thursday, 26 September 2013, 13:37
>Subject: Re: [Openstack] loop on network with openvswitch + vlans
> 
>
>
>Pavel,
>
>
>
> why are you restarting Open vSwitch? I think these steps should work when you have to:
>
>- stop quantum-ovs-plugin-agent
>- stop openvswitch services
>- start openvswitch services
>- run quantum-ovs-cleanup
>- start quantum-ovs-plugin-agent
>
>
>
>Re, Darragh.
>  
>
>>Message: 3
>>Date: Thu, 26 Sep 2013 13:50:36 +0200
>>From: Pavel Stano <stano at websupport.sk>
>>To: openstack at lists.openstack.org
>>Subject: [Openstack] loop on network with openvswitch + vlans
>>Message-ID: <52441F8C.50509 at websupport.sk>
>>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>>Hi,
>>
>>we encountered some problem on our setup with openvswitch with multiple 
>>nodes.
>>When openstack is running ok and we restart openvswitch on 2 or more 
>>compute nodes, flow tables on
br-int will be cleared and 
>>quantum-plugin-openvswitch-agent will not re-configure it until it will 
>>be restarted too.
>>Ports are still attached to br-int but without flows.
>>So after flows are cleared there occur loop on network.
>>
>>We want to fix it by modifing openvswitch init script to dump/load flows 
>>when stop/start/restart, it dont do it automatically. Or another 
>>alterantive is forcibly remove br-int when stopping openvwswitch.
>>
>>And of course automatically restart quantum-plugin-openvswitch-agent 
>>after openvswitch restart.
>>
>>Anyone encounter same problem and/or have some better solution ?
>>
>>Thanks
>>--
>>[ Ohodnotte kvalitu mailu: http://nicereply.com/websupport/Stano/ ]
>>
>>Pavel Stano | Troubleshooter
>
>
>