Re: timekeeping in a domU

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Wed, Oct 04, 2006 at 01:28:13PM -0500, Jonathan A. Kollasch wrote:
> Hi,
> 
> I usually use my KDC to validate my password or forwarded
> ticket on my domU, I don't control this dom0. Occasionally
> this doesn't work.  And after I get with a SSH key,
> I get a error from kinit:
> 
> kinit: krb5_get_init_creds: time skew (541) larger than max (300)
> 
> Is it the dom0's responsibility to provide the domUs
> with an accurate clock?

It is, but the TOD is read at boot time only; after that the kernel relies on
clock interrupts and CPU counters. There can be drift

> And, can I run a ntpd in the domU to keep it in sync?

Yes.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--