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

[Tupshin Harper <tupshin@xxxxxxxxxxx>]

Ian Pratt wrote:

> 
> 
>  
>
>>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?
>>    
>>
>
>If you don't run ntp in the domU's, it should just work.
>
>If you want to run ntp in the domU, try:
> echo 1 > /proc/sys/xen/independent_wallclock
>
>I guess we could be smarter about this, and make the wall clock
>independent automatically if someone does an adjtimex syscall. Anyone
>got any comments on this?
>
>Ian
>
> 
>
Don't auto-detect based on adjtimex. It would be too easy and too
confusing to accidentally make such a call once, and then not realize
that you would no longer be auto-synchronized.

Instead, make independent_wallclock be a config file option that is
overridable by proc.

-Tupshin

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