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Re: [Xen-users] NTP service in DomU


  • To: Jordi Espasa Clofent <sistemes.llistes@xxxxxxxxxxxxx>
  • From: Nico Kadel-Garcia <nkadel@xxxxxxxxx>
  • Date: Wed, 04 Jul 2007 12:50:24 +0100
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 04 Jul 2007 04:48:21 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Jordi Espasa Clofent wrote:
well, you're right. It's not possible to have
independent ntp clients running in your domU's because
you only have one physical harware clock, right? ;)

It seems is possible with independent_wallclock parameter in /proc/sys/xen

And I can't really understand your argumentation about having
serveral domU's "around  the world"? In that case, don't you have
also several dom0's arrounf the world at that places?

Imagine that environment: several VPS for client who are in differents locations around the world.

A real example is: my hosts are in Spain but I've several clients in south-america; some of them want to sync their VPS with their own time, not with spanish-time.
That's not an NTP issue: that's a timezone issue. You should *NOT, NOT, NOT* use NTP to try to manipulate your local times htis way: NTP is supposed to set the hardware clock, your timezone settings then adjust the display and handling of that for your local configuration.


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