Hi Alexandre,

The   /etc/pve/qemu-server/402.conf    does not contain any args: entry yet.

What is "args: -no-hpet" good for?

We used "Microsoft Windows Vista/2008 (w2k8)" as OS-type. When we tried a "Microsoft Windows 7/2008r2 (win7)" install, there occured different errors during the installation - but no worry on that, since it really is a non-r2 guest.

It is an 64bit with 12GB RAM and 8 Cores. Writing this email I get another thought: We upgraded a few weeks ago the vCPU-Cores from 4 to 8 I think, and since we did that, the frequency of the freezes seems to rise from 3-4 weeks to at least every 10 days now.

@massimo:
We used the ide mode for some testing, but then decide to use the virtio since they seemed to be faster - and more reliable. But these decision was made during the first steps with proxmox, so maybe we did not get the real causes for the problems we have had.

I will update the BIOS again (will have to move the guests first, and should do the bios update only locally in the data center...) - and then maybe change to IDE Mode. Did you ever try to change back from virtio to ide? Does this work without a fresh install?

Thank you for your time spending here!

Regards, Martin


Alexandre DERUMIER <[email protected]> schrieb am 05.09.2012 15:52:
Also, have you tried to put "args: -no-hpet" in the vm config file?
-no-hpet is already passed if you use win7/win2008 ostype in your vm config file


Also is it win2008 32bit or x64 ?



----- Mail original -----

De: "Massimo Santoro" <[email protected]>
À: "Martin Schuchmann" <[email protected]>
Cc: [email protected]
Envoyé: Mercredi 5 Septembre 2012 14:37:15
Objet: Re: [PVE-User] System hangs / CPU 100% Windows 2008 Server

On 05/09/2012 13:52, Martin Schuchmann wrote:
Hi Massimo,

Thanks for that advice!

I have checked the bios and according to HP Support it is already a
corrected version from May 2011.

I think if it would be caused by a hardware error, the problem would
occur on other guests on this host also, or the complete host should
freeze up?

On the same machine is a Win 2008 SBS running - for 6 month without
any error.
The node which is freezing is used as a Terminalserver with about 5-10
active Users.

We have several win2008 std (not r2) installations. Many of them
suffered of system hangs (blue screen) or cpu 100% hangs while other
guests were still running fine. Updating the bios solved all those issues.

We found out though that the most stable setup is using IDE and e1000
(no virtio devices). Have you tried this?

Also, have you tried to put "args: -no-hpet" in the vm config file?

Massimo Santoro


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