On Mon, Jan 04, 2010 at 03:44:34AM +1100, Daniel Lam wrote:
> Hi All - so I guess nobody has the answers to these questions?
> Is there somewhere I can ask, perhaps the developers list?
>
Have you tried using newer Xen hypervisor?
Xen 3.4.2 is the latest stable release.
Also, did you try different dom0/domU kernel versions?
-- Pasi
> Daniel
> ---------- Forwarded message ----------
> From: Daniel Lam <[1]daniel@xxxxxxxxxxxxxxxx>
> To: [2]xen-users@xxxxxxxxxxxxxxxxxxx
> Date: Sat, 2 Jan 2010 17:20:12 +1100
> Subject: [Xen-users] Resolve "Time went backwards" problem by using
> jiffies as clocksource
> Hi All,
> I'm new to Xen and... Happy New Year!
> After restarting dom-0, my dom-u prints this in console once every second,
> [55082.616234] __ratelimit: 1503 messages suppressed
> [55082.616234] clocksource/0: Time went backwards: ret=380ab26c53a
> I resolved this by following the instructions in
> "[3]http://wiki.debian.org/Xen";,
> which is basically changing clocksource to "jiffies".
> Now the problem has gone away, I'm wondering if somebody can help me:
> 1. Is domain-0 not able to set the system time of domain-u the root cause?
> I can see this error in console "Unable to set System Clock to: <a
> datetime value>",
> even after I changed clocksource to "jiffies".
> 2. Why can't domain-0 set the date of the domain-u?
> 3. If this is the only way to go (using jiffies clocksource), I will have
> to sync
> the domain-u system time manually using something like ntpd?
> Thanks!
> cheers,
> Daniel
>
> References
>
> Visible links
> 1. mailto:daniel@xxxxxxxxxxxxxxxx
> 2. mailto:xen-users@xxxxxxxxxxxxxxxxxxx
> 3. http://wiki.debian.org/Xen
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
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