Why OVS bridge fails after a reboot on Windows 2016?

asked 2018-04-13 17:52:03 +0300

darmachj gravatar image

updated 2018-04-13 17:53:58 +0300

We're creating an ovs bridge, and then a bond on Windows 2016 Core:

ovs-vsctl add-br br0
ovs-vsctl add-bond br0 bond0 "Ethernet" "Ethernet 1" bond_mode=balance-slb
Enable-NetAdapter br0
New-NetIPAddress -InterfaceAlias "br0" -IPAddress XX.XX.XX.XX -PrefixLength 26

Everything works fine up to the point when we reboot the server, after the reboot the interface is not restored, ovs-vsctl show returns the error:

ovs-vsctl show
    Bridge br0
        Port br0
            Interface br0
                type: internal
                error: "could not add network device br0 to ofproto (Invalid argument)"
        Port "bond0"
            Interface "Ethernet 4"
            Interface Ethernet

Can anyone advise what might be happening?

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Can you tell us which version of OVS are you using? You can use the following command as reference: ovs-vsctl -v

aserdean gravatar imageaserdean ( 2018-04-16 18:49:25 +0300 )edit

We're running beta 2.7.4 - issue was initially encountered on 2.7.0

darmachj gravatar imagedarmachj ( 2018-04-16 21:18:51 +0300 )edit

Does the issue still reproduce on 2.7.4? On 2.7.0 as far as I know there was some issues when restarting, the normal workaround is to restart the ovs-vswitchd service.

aserdean gravatar imageaserdean ( 2018-04-16 22:49:37 +0300 )edit

Yes, we're on 2.7.4 now and the issue still persist.

darmachj gravatar imagedarmachj ( 2018-04-17 10:44:05 +0300 )edit

Can you please post the ovs-vswitchd.log?

aserdean gravatar imageaserdean ( 2018-04-17 14:27:19 +0300 )edit