[SOLVED] New very nice feature --> hibernate, how can do that with windows and right ntp?

[fireon]

Hello all,

using the new hibernate feature in 5.4 let go windows in trouble with time, because it need hours to sync the time afer Resume a Window VM. Tested with Windows10. Normaly the vmgenid should trigger an ntpsync after resume right? If i go in windows to ntp and sync manualy then it works immediately. So is there anything left to do in Windows? In Ubuntu it works great.

Thanks

 

[dcsapak]

hi, according to the vm generation id whitepaper from microsoft, a vmgenid change is not necessary when a vm is paused/resumed

Scenario | Generation ID changed
Virtual machine is paused or resumed | No

 

[fireon]

hi, according to the vm generation id whitepaper from microsoft, a vmgenid change is not necessary when a vm is paused/resumed

Ähm.. ok, and that means what? So no ntp? So wrong time for 5 hours?

 

[ertanerbek]

I think this feature need more improve; ESXI can not come back from hibernate...

https://resmim.net/f/FzorE0.png

 

[Alwin]

@fireon, you can change the polling interval of the windows machine to get updates more frequently.
https://www.thewindowsclub.com/change-internet-time-update-interval-windows

Further you could run the qemu guest agent or if you have a CPU with TSC, you could try to use it.
https://access.redhat.com/documenta...ration_guide/chap-kvm_guest_timing_management

@ertanerbek, ESXi is a hypervisor and therefor not suited/optimized for such scenarios. I really doubt that this has anything to do with the hibernation feature. I rather believe that ESXi doesn't support to be hibernated at all.

 

[fireon]

With this https://pve.proxmox.com/wiki/Guest_Time_drift works Windows10 also fine Fixed!