Re: [Xen-users] NTP time issues DomU's

[andrew mathes <amathes@xxxxxxxxxxxx>]

yeah, i'm already doing that, I was just saying, it *seemed* like they 
were getting their time from domain0, and weren't actually changing their 
own clocks in accordance with syncing with the same ntpd server.
especially since they're all off by exactly the same amount ... and 
running ntpdate doesn't seem to have any effect whatsoever?
On Thu, 12 May 2005, Fernando Maior wrote:

> On 5/12/05, andrew mathes <amathes@xxxxxxxxxxxx> wrote:
> > don't the DomU's just get their time from DomO?  Ie. ... even if they
> > weren't running ntp they'd always be synced with whatever DomO thought
> > about system time?
> >
> > Maybe i'm way off
> >
> > On Thu, 12 May 2005, Alex Tomkins wrote:
> >
> > > On Thu, May 12, 2005 at 10:42:53AM -0700, andrew mathes wrote:
> > > > So, from what it looks like (on my servers and the docs), all my domains
> > > > get their time from DomO.  Which I have setting itself through NTP, and
> > > > the dom0 looks good.  However, All of the domains are 1.5 seconds off, and
> > > > won't ntp themselves on, also, an identical server, all the domains are
> > > > .768 seconds off (off of the server i'm ntping to) , but both domO's are
> > > > withing (.02) and seem to narrow in as NTP is supposed to.
> > > >
> > > > So, question is, 1) what is going on here, and 2) can anything be done
> > > > about it?
> > > Are you using OpenNTPD by any chance?
> > > My machines suffered from inaccurate clocks in DomU's, even though the
> > > clock was very accurate in Dom0.  Switching to regular ntpd solved this,
> > > DomU immediately used the correct time shortly after starting ntpd.
> > > --
> > > Alex Tomkins <tomkins@xxxxxxxxxxxx>
> Andrew,
>
> Please remember, you allways shoult treat each virtual machine
> like a completely separated host! So far, you shoul configure ntpd
> to get time from -possibly- the same host as you dom0 is getting
> time. Try that. It won't hurt :) And I bet you will feel happy with
> the result :)
>
> --
> Bye,
> Fernando Maior
> LPIC/1 31908
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users