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

fireon

Famous Member
Oct 25, 2010
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Austria/Graz
iteas.at
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

Proxmox Staff Member
Staff member
Feb 1, 2016
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Vienna
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
 

Alwin

Proxmox Staff Member
Staff member
Aug 1, 2017
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@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/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_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.
 

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