[openstack-dev] [neutron] make mac address updatable: which plugins?

Amir Sadoughi amir.sadoughi at RACKSPACE.COM
Tue Aug 5 19:51:38 UTC 2014


I agree with Kevin here. Just a note, don't bother with openvswitch and linuxbridge plugins as they are marked for deletion this cycle, imminently (already deprecated)[0].

Amir

[0] http://eavesdrop.openstack.org/meetings/networking/2014/networking.2014-08-04-21.02.html Announcements 2e.
________________________________
From: Kevin Benton [blak111 at gmail.com]
Sent: Tuesday, August 05, 2014 2:40 PM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [neutron] make mac address updatable: which plugins?

How are you implementing the change? It would be good to get to see some code in a review to get an idea of what needs to be updated.

If it's just a change in the DB base plugin, just let those changes propagate to the plugins that haven't overridden the inherited behavior.


On Tue, Aug 5, 2014 at 1:28 PM, Charles Carlino <chuckjcarlino at gmail.com<mailto:chuckjcarlino at gmail.com>> wrote:
Hi all,

I need some help regarding a bug [1] I'm working on.

The bug is basically a request to make the mac address of a port updatable.  The use case is a baremetal (Ironic) node that has a bad NIC which must be replaced, resulting in a new mac address.  The bad NIC has an associated neutron port which of course holds the NIC's IP address.  The reason to make mac_address updatable (as opposed to having the user create a new port and delete the old one) is that during the recovery process the IP address must be retained and assigned to the new NIC/port, which is not guaranteed in the above work-around.

I'm coding the changes to do this in the ml2, openvswitch, and linuxbridge plugins but I'm not sure how to handle the the other plugins since I don't know if the associated backends are prepared to handle such updates.  My first thought is to disallow the update in the other plugins, but I would really appreciate your advice.

Kind regards,
Chuck Carlino

[1] https://bugs.launchpad.net/neutron/+bug/1341268

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Kevin Benton
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