> -----Oorspronkelijk bericht----- > Van: libvirt-users-bounces@xxxxxxxxxx [mailto:libvirt-users- > bounces@xxxxxxxxxx] Namens Jérôme > Verzonden: woensdag 23 september 2015 15:03 > Aan: libvirt-users@xxxxxxxxxx > Onderwerp: Time syncing after VM suspend/resume > > Hi all. > > When resuming guest after suspend, the time is wrong (because the guest > doesn't know it has been suspended). > > Apparently, ntp running on the guest doesn't solve this. At least on Linux > system. I read it works on Windows guests. I don't understand why, so I'd > appreciate a link to an explanation, but I understand it is out of scope for this > list. Linux has two methods to use ntp: ntpdate: It will run once at boot time to sync time. (This is probably installed on your system) It will not run after suspend and resume... => no correction ntpd: Continuously adjusts time. The deamon also calculates the drift to anticipate differences. I use this one and works perfectly. > > The HW clock is correct and the guest agent is setup to use kvm-clock. > > Using the guest-set-time command does set the clock on the guest according to > the host. But this is not triggered automatically on resume. > > I found discussions about this, even a patch proposal to call guest-set-time on > resume, but all of this is one year old and I can't find any newer information. > > http://serverfault.com/questions/334698/how-to-keep-time-on-resumed-kvm- > guest-with-libvirt > https://www.redhat.com/archives/libvirt-users/2014-October/msg00009.html > https://www.redhat.com/archives/libvir-list/2014-February/msg00520.html > > Is there any fresher information I have missed ? > > Thanks. > > -- > Jérôme > > _______________________________________________ > libvirt-users mailing list > libvirt-users@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/libvirt-users _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
