[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-users] Time Synchronization

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Dominic Hargreaves <dom@xxxxxxxx>
  • Date: Fri, 7 Apr 2006 10:13:49 +0100
  • Delivery-date: Fri, 07 Apr 2006 02:14:19 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>

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

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

Xen-users mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.