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From Edison Su <Edison...@citrix.com>
Subject RE: Review Request: fix kvm traffic labels (guest traffic types on multiple networks don't work)
Date Wed, 26 Sep 2012 00:23:06 GMT


> -----Original Message-----
> From: David Nalley [mailto:david@gnsa.us]
> Sent: Tuesday, September 25, 2012 4:34 PM
> To: cloudstack-dev@incubator.apache.org; Marcus Sorensen
> Cc: Edison Su
> Subject: Re: Review Request: fix kvm traffic labels (guest traffic
> types on multiple networks don't work)
> 
> On Tue, Sep 25, 2012 at 7:24 PM, Marcus Sorensen <shadowsor@gmail.com>
> wrote:
> 
> > I've got a fix for this, but there is still an issue where upgrades
> won't work. Say a user has two hosts, host1 with a cloudVirBr1201 and
> host2 with no bridges. If we upgrade both hosts to this version, then
> attempt to live migrate a guest from host1 to host2, the migration will
> fail because it expects the same bridge name. In KVM this is handled by
> libvirt, so not possible to pass a new name.
> >
> > Not sure what to do about that or at what level the switchover
> becomes acceptable.
> 
> 
> Live migration should only happen with hosts in the same cluster, and
> there is the expectation of network homogeneity within hosts in a
> cluster, so I don't think this is a problem - or at least we assume
> that the situation causing the problem won't be present.

+1, all the kvm hosts needs to have the same network configuration, otherwise, migration doesn't
work, zone wide guest network doesn't work, etc.

> 
> --David

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