Re: Is ntpd in guest necessary?
Avi Kivity wrote: Michael Tokarev wrote: A question that I asked on irc many times, but got no answer.. Giving guest linux with CONFIG_KVM_TIME set, is it necessary to run ntpd in it for accurate time, or ntpd on host is sufficient? And the same, but without CONFIG_KVM_TIME ? In theory, CONFIG_KVM_CLOCK should avoid the need for ntp. Let us know if you get different results. Well. The question was not come from nowhere. It *seems* like it is working, but somewhat.. strange. I.e., when the time steps on the host (for whatever reason), it stays the same on guests, at least for some time. Later on it syncronizes, *sometimes*, but not always. I tried to reproduce this unsyncronization (hence the delay with replying), but can't do it easily on demand. Maybe I were just dreaming at the time I saw it, but I don't think so. Or maybe something has changed in recent kernels/kvm so that it does not happen any more. That's why I asked in the first place. In short: with CONFIG_KVM_TIME set, it *seems* to work, but I'm not 100% sure still. The question was if it *supposed* to work in the first place, and you answered that. And withOUT CONFIG_KVM_TIME, it stays unsyncronized. Thanks! /mjt -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Is ntpd in guest necessary?
Michael Tokarev wrote: A question that I asked on irc many times, but got no answer.. Giving guest linux with CONFIG_KVM_TIME set, is it necessary to run ntpd in it for accurate time, or ntpd on host is sufficient? And the same, but without CONFIG_KVM_TIME ? In theory, CONFIG_KVM_CLOCK should avoid the need for ntp. Let us know if you get different results. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Is ntpd in guest necessary?
On Sunday 16 November 2008 07:27:48 am you wrote: In theory, CONFIG_KVM_CLOCK should avoid the need for ntp. Let us know if you get different results. I've been running a VM for a couple of days with a 2.6.27 kernel and CONFIG_KVM_CLOCK and the clock is synchronized. Is there a driver we could use on Windows to keep the clock synchronized there as well? -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Is ntpd in guest necessary?
Michael Tokarev wrote: A question that I asked on irc many times, but got no answer.. Giving guest linux with CONFIG_KVM_TIME set, is it necessary to run ntpd in it for accurate time, or ntpd on host is sufficient? And the same, but without CONFIG_KVM_TIME ? What was your experience when you tested with each config? -- David. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
