Jan Beulich wrote:

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On 05.02.18 at 10:03, wrote: Per Jessen wrote:

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I have a xen guest running leap15 beta - whilst playing with chrony and ntp, I noticed that independent_wallclock appears to have gone away?

It would normally reside here: /proc/sys/xen/

I don't see it in Leap15 nor in Leap423.

The source file is

arch/x86/kernel/time-xen.c

It was still present in Leap421, kernel 4.1.39, but with leap422, kernel 4.4.27, it's gone. I know the xen patches are no longer needed, everything is in the kernel, but I cannot find anything that tells me what to do about independent_wallclock ?

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It is not needed anymore? I can see my leap15 guest has lost two second already, out of sync with dom0.

A Leap423 guest is also losing time. (no NTP).

I'm afraid I can't match the question with the observation: In kernel-xen independent wall clock was off by default, with the goal of making use of something like NTP in guests unnecessary. Hence you could either have made use of the option (and then use NTP in the guest), or you could have lived with the default (and would then have to have switched to use NTP in PV guests with the Xen patches gone), in which case the option itself is irrelevant here. Could you clarify which of the two you're actually after, or what I'm missing?

I was just playing around with Leap15 as a guest and wanted to run ntp, but couldn't find the wallclock setting. I thought it might mean it is no longer necessary to run ntp, i.e. that the guest would sync to dom0. Are you saying that there is no need to set independent_wallclock when running ntp in a DomU ? -- Per Jessen, Zürich (1.5°C) http://www.hostsuisse.com/ - virtual servers, made in Switzerland. -- To unsubscribe, e-mail: opensuse-virtual+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-virtual+owner@opensuse.org