[ovs-dev] [PATCH RFC 3/5] ofproto/bundles: Use staging area for port_mod messages

[Ben Pfaff]

On Fri, May 09, 2014 at 07:35:21PM +0300, Alexandru Copot wrote:
> On Fri, May 9, 2014 at 6:42 PM, Ben Pfaff <blp at nicira.com> wrote:
> > On Tue, May 06, 2014 at 09:28:29PM +0300, Alexandru Copot wrote:
> >> Allow port_mod messages in a bundle and apply them to copies
> >> of struct ofport. The final state is commited to the original
> >> data structure and notifications are sent.
> >>
> >> Signed-off-by: Alexandru Copot <alex.mihai.c at gmail.com>
> >> Cc: Daniel Baluta <dbaluta at ixiacom.com>
> >
> > Why can a port be part of only one bundle?
> 
> Because I am thinking that if you need to make several changes
> to a port you can group them in a bundle. It's a way of serializing
> access to a port between controllers. Later it could be used to make
> sure the port won't disappear until the bundle is committed.

Sorry that I took so long to reply.

I'm not sure that it's a good idea to prevent bundles from
overlapping.  This will be much harder to do for flows, since for
example a single "delete" in one bundle can wipe out all the flows
added or modified by a different bundle.  What do you plan to do for
flows?