Re: [Xen-users] in-place upgrades?

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

> I'm sure this must be true, but neither the Wiki nor the mailing list
> archives discuss it...
>
> Is it possible to upgrade Xen with minimal downtime to the guests
> domains?

You'll need to take down the whole host.  You could *suspend* the domains, 
though, so that they come up in their original state rather than rebooting.  
Of course, some TCP connections may drop due to the downtime.

> - is it normally done with just one reboot?

Yes.  Install a new Xen (and comptabile dom0 and tools) and restart with them.

> Will guest  
> domains always be compatible with future Xen releases?

Yes, this is the plan for the forseeable future.  You can't downgrade Xen and 
necessarily expect domains to run, but upgrading is fine - the 3.0 (and 
onwards) interfaces will continue to be supported.

HTH,
Mark

> I have just one machine to run my home network of servers - so migrating
> the domains to another machine isn't an option...
>
> Thanks,
> Kent
>
>
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-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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