Re: Time and KVM - best practices

2010-03-22 Thread Glauber Costa
On Mon, Mar 22, 2010 at 10:55:18AM +0100, Alexander Graf wrote: > > On 22.03.2010, at 10:15, Dor Laor wrote: > > > On 03/21/2010 01:29 PM, Thomas Løcke wrote: > >> Hey, > >> > >> What is considered "best practice" when running a KVM host with a > >> mixture of Linux and Windows guests? > >> > >

Re: Time and KVM - best practices

2010-03-22 Thread Thomas Løcke
On Mon, Mar 22, 2010 at 11:36 AM, Jan Kiszka wrote: > Don't know what Windows does with the RTC, but the idea behind -rtc > clock=host is to provide an accurate time source to guest without > paravirtualized guest kernel drivers or an ntp installation in the > guest. Last time I checked, hwclock r

Re: Time and KVM - best practices

2010-03-22 Thread Jan Kiszka
Dor Laor wrote: > On 03/21/2010 01:29 PM, Thomas Løcke wrote: >> Hey, >> >> What is considered "best practice" when running a KVM host with a >> mixture of Linux and Windows guests? >> >> Currently I have ntpd running on the host, and I start my guests using >> "-rtc base=localhost,clock=host", wit

Re: Time and KVM - best practices

2010-03-22 Thread Alexander Graf
On 22.03.2010, at 10:15, Dor Laor wrote: > On 03/21/2010 01:29 PM, Thomas Løcke wrote: >> Hey, >> >> What is considered "best practice" when running a KVM host with a >> mixture of Linux and Windows guests? >> >> Currently I have ntpd running on the host, and I start my guests using >> "-rtc ba

Re: Time and KVM - best practices

2010-03-22 Thread Dor Laor
On 03/21/2010 01:29 PM, Thomas Løcke wrote: Hey, What is considered "best practice" when running a KVM host with a mixture of Linux and Windows guests? Currently I have ntpd running on the host, and I start my guests using "-rtc base=localhost,clock=host", with an extra "-tdf" added for Windows

Time and KVM - best practices

2010-03-21 Thread Thomas Løcke
Hey, What is considered "best practice" when running a KVM host with a mixture of Linux and Windows guests? Currently I have ntpd running on the host, and I start my guests using "-rtc base=localhost,clock=host", with an extra "-tdf" added for Windows guests, just to keep their clock from driftin