Re: [Xen-users] Time Synchronization

[Dominic Hargreaves <dom@xxxxxxxx>]

On Fri, Apr 07, 2006 at 10:31:58AM +0200, Jan Philipp Giel wrote:
> Am Freitag, 7. April 2006 09:10 schrieb Stephan Austermühle:
> > Do all the domU's get the
> > time from dom0 meaning it is sufficient to run an ntpd there
> 
> Forgot to remove the part that does not apply in my last mail...
> domU gets the time from dom0 and is not allowed to change it -> synchronizing 
> the time can only be done in dom0.

Not entirely true. You can set the domUs to have an independent clock
with

echo 1 > /proc/sys/xen/independent_wallclock

and in fact with my systems I have had to do this to stop the domU
clocks slipping out of synch dramatically (I have seen this reported on
the list before but haven't had a chance to properly investigate yet).

Dominic.

-- 
Dominic Hargreaves | http://www.larted.org.uk/~dom/
PGP key 5178E2A5 from the.earth.li (keyserver,web,email)

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