KVM windows guest time.

[itamar]

How can I keep my windows 2k8 time correct ?

I have followed instructions at,

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualiza...

but seems to not worked for me.

[Daniel P. Berrange]

On Tue, Sep 27, 2011 at 09:30:05PM -0300, Itamar Reis Peixoto wrote:
> How can I keep my windows 2k8 time correct ?
>
> I have followed instructions at,
>
> http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualiza...
>
> but seems to not worked for me.

You can try setting the RTC to catchup with lost ticks, instead of
discarding them, by changing the XML to have:

<clock offset="localtime">
     <timer name="rtc" tickpolicy="catchup">
   </clock>

Regards,
Daniel

[itamar]

On Wed, Sep 28, 2011 at 5:06 AM, Daniel P. Berrange  wrote:
> On Tue, Sep 27, 2011 at 09:30:05PM -0300, Itamar Reis Peixoto wrote:
> > How can I keep my windows 2k8 time correct ?
> >
> > I have followed instructions at,
> >
> > http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualiza...
> >
> > but seems to not worked for me.
>
> You can try setting the RTC to catchup with lost ticks, instead of
> discarding them, by changing the XML to have:
>
> <clock offset="localtime">
>     <timer name="rtc" tickpolicy="catchup">
>   </clock>
>
> Regards,
> Daniel
> --

thanks, seems to be worked perfect.

[itamar]

On Wed, Sep 28, 2011 at 5:06 AM, Daniel P. Berrange  wrote:
> On Tue, Sep 27, 2011 at 09:30:05PM -0300, Itamar Reis Peixoto wrote:
> > How can I keep my windows 2k8 time correct ?
> >
> > I have followed instructions at,
> >
> > http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualiza...
> >
> > but seems to not worked for me.
>
> You can try setting the RTC to catchup with lost ticks, instead of
> discarding them, by changing the XML to have:
>
> <clock offset="localtime">
>     <timer name="rtc" tickpolicy="catchup">
>   </clock>
>
> Regards,
> Daniel

no way to change this using virt-managed.

I have changed using virsh edit and worked well

[Dor Laor]

On 09/28/2011 03:30 AM, Itamar Reis Peixoto wrote:
> How can I keep my windows 2k8 time correct ?
>
> I have followed instructions at,
>
> http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualiza...
>
> but seems to not worked for me.

Can you provide (much) more details:

Fedora version qemu/kernel versions, even windows guest service pack 
existence. What's the qemu cmdline looks like, have you used NTP? What's 
the exact issue with time that you suffering of?