Clock skew KVM + Windows 2008 (64-bit)

mcserna

New Member
Jul 16, 2010
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Hi!

I am having a bit of a problem with PVE and some Windows 2008 (64-bit) virtual machines. The clock lags so bad that windows time services complain constantly and can't keep up with synchronisation against time servers. This cause all kinds of problem with Kerberos of course. The problem is not limited to one of my machines but happens on different hosts with different hardware. I did not have problems with this at the beginning - this started to cause problems like a month ago after some upgrade of PVE software.

# pveversion -v
pve-manager: 1.5-10 (pve-manager/1.5/4822)
running kernel: 2.6.18-2-pve
proxmox-ve-2.6.18: 1.5-5
pve-kernel-2.6.18-2-pve: 2.6.18-5
pve-kernel-2.6.24-8-pve: 2.6.24-16
qemu-server: 1.1-16
pve-firmware: 1.0-5
libpve-storage-perl: 1.0-13
vncterm: 0.9-2
vzctl: 3.0.23-1pve11
vzdump: 1.2-5
vzprocps: 2.0.11-1dso2
vzquota: 3.0.11-1
pve-qemu-kvm-2.6.18: 0.9.1-5

Does anyone have some hints on how to resolve this?

Thanks,
Markus
 
2.6.24 did not work for me. The KVM guest hangs at the Bios screen and consumes 100% CPU. If I can get this solved, I will try it.

2.6.32 is no option if OpenVZ does not work.

Thanks for your response,
Markus
 
I've upgraded to the latest 2.6.24 kernel and the guest starts up just fine now. I am going to monitor the clock skew for a few hours and post my findings later.

Bye,
Markus