[Openstack] loop on network with openvswitch + vlans

Darragh O'Reilly dara2002-openstack at yahoo.com
Thu Sep 26 12:37:09 UTC 2013


 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
>we encountered some problem on our setup with openvswitch with multiple 
>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 ?
>[ Ohodnotte kvalitu mailu: http://nicereply.com/websupport/Stano/ ]
>Pavel Stano | Troubleshooter
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