[one-users] NIC Hot Plug with OpenVSwitch

[Jon]

Hello John,

I also get an error, see below.
I'm on ubuntu 13.04 using libvirt 1.0.2 and ovs versions :

ovs-vswitchd (Open vSwitch) 1.9.0
Compiled Mar  1 2013 14:34:38
OpenFlow versions 0x1:0x1

This is the relevant entry in my VM log:

Sun Jul 14 02:19:17 2013 [VMM][I]: Successfully execute network driver
operation: pre.
Sun Jul 14 02:19:17 2013 [VMM][I]: Command execution fail:
/var/tmp/one/vmm/kvm/attach_nic one-24 02:00:0a:2a:00:65 ovsbr0 - 24
192.168.0.35
Sun Jul 14 02:19:17 2013 [VMM][E]: attach_nic: Command "virsh --connect
qemu:///system attach-interface --domain one-24 --type bridge --source
ovsbr0 --mac 02:00:0a:2a:00:65" failed: error: Failed to attach interface
Sun Jul 14 02:19:17 2013 [VMM][I]: error: Unable to add bridge ovsbr0 port
vnet1: Operation not supported
Sun Jul 14 02:19:17 2013 [VMM][E]: Could not attach NIC (02:00:0a:2a:00:65)
to one-24
Sun Jul 14 02:19:17 2013 [VMM][I]: ExitCode: 1
Sun Jul 14 02:19:17 2013 [VMM][I]: Failed to execute virtualization driver
operation: attach_nic.
Sun Jul 14 02:19:17 2013 [VMM][E]: Error attaching new VM NIC: Could not
attach NIC (02:00:0a:2a:00:65) to one-24

The oned log basically echos the same.

I have not tried to manually run the command though.

I also migrated the vm to a different host just in case it was an ovs
misconfig on the first host, but received the same error.

Wondering if it's maybe just the version of libvirt we're using.

This is really the first I've tested NIC hotplugging so please take my
results with a grain of salt.

Best Regards,
Jon A



On Sun, Jul 14, 2013 at 1:10 AM, MENDOZA, John Robert T. <
bert at asti.dost.gov.ph> wrote:

> Hi Everyone,
>
> Hope everyone is doing ok. :)
>
> Just want to ask if anybody has tried the NIC hot plug functionality
> with OpenVSwitch.  I'm testing ONE 4.0.1 and am having error messages
> pertaining to the creation of the virtual ports for the VMs.  It
> outputs  "error: Unable to add bridge ovsbr0 port vnetX: Operation not
> supported". I did some Google'ing and it seems that the virsh CLI
> utility has not been updated to support OpenVSwitch bridges as it still
> treats the type bridge argument to be a linux bridge.  I'm thinking of
> recoding the "attach_nic" script to create an xml file and use "virsh
> attach-device" to hot plug the NIC the same way disk hot plugging is
> done.  Any thoughts? Or is there something else I should know why ONE
> used "attach-interface" in the first place?
>
> Thanks,
> John Robert Mendoza
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
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