This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-users] Re: 2.6.27 domU clock drift

To: Brad Plant <bplant@xxxxxxxxxxxx>
Subject: [Xen-users] Re: 2.6.27 domU clock drift
From: Ferenc Wagner <wferi@xxxxxxx>
Date: Mon, 29 Dec 2008 17:54:19 +0100
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: Mon, 29 Dec 2008 08:54:59 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20081205165107.3e28ac85@daedalus> (Brad Plant's message of "Fri, 5 Dec 2008 16:51:07 +1100")
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <20081205165107.3e28ac85@daedalus>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux)
Brad Plant <bplant@xxxxxxxxxxxx> writes:

> In the old configuration, the time on the domU's were in sync with the
> dom0. This made keeping the correct time easy by running a single
> instance of ntp on the dom0 and all the domU's would follow. In the
> new configuration though, the domU's seem to have their own time which
> drifts relative to the dom0 and the other domU's. The behaviour in the
> 2.6.18 kernel could be changed via
> /proc/sys/xen/independent_wallclock, but the 2.6.27 kernel seems to
> have no such option. Is there a kernel option (maybe for an RTC
> driver?) that I need to compile in to restore the old behaviour or do
> I now need to run ntp in every domU?

Yes, you have to run ntpd in each domU.

Xen-users mailing list

<Prev in Thread] Current Thread [Next in Thread>