> From: openstack-bounces+ewan.mellor=citrix....@lists.launchpad.net 
> [mailto:openstack-
> bounces+ewan.mellor=citrix....@lists.launchpad.net] On Behalf Of Justin Santa 
> Barbara
> Sent: 23 March 2011 19:22
> To: Eric Day
> Cc: openstack@lists.launchpad.net
> Subject: Re: [Openstack] Instance IDs and Multiple Zones
>
> > Migrations outside of a zone would require a new
> > instance ID, but this should be fine, since other things would also
> > change (such as IP, available volumes, ...). A cross-zone migration
> > will be more of a copy+delete than a proper move.

> +1 on this.  If the IP is changing, there's little point in trying to keep 
> the ID the same.  Great 
> point.

I don't agree at all.  There are many good reasons to preserve the identity of 
a VM even when it's IP or location changes.  Billing, for example.  Access 
control.  Intrusion detection.

Just because I move a VM from one place to another, why would I expect its 
identity to change?

Ewan.


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