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
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Pavel Stano | Troubleshooter

http://WebSupport.sk
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