Comments on: libvirt: unknown OS type hvm

By: Aas

Aas — Fri, 04 Mar 2011 17:11:03 +0000

Love Ya! Josir.
I had no idea of such usefull command. And I sped several hours finding out what to put in the XML file.

By: Creating Virtual Machine opensuse

Creating Virtual Machine opensuse — Sun, 26 Dec 2010 19:08:09 +0000

[...] [...]

By: blueorthlog

blueorthlog — Tue, 07 Sep 2010 11:37:30 +0000

Hello I get the following error returned when I use a perl script.

Unknown OSTYPE

Ubuntu 8.04.4 LTS
2.6.24-28-server

By: Josir

Josir — Mon, 19 Apr 2010 23:04:14 +0000

Hi folks, just to add two cents. If you try to create a vm using a xml file from another server (generally with older virsh), you can get this error too. Solution:

1) Run command “virsh capabilities”
2) Based on virsh results, update two attributes on xml file: and

It worked for me.
Anyway, I owe you a beer too for insightful post.

By: Roberto Aloi

Roberto Aloi — Mon, 07 Dec 2009 18:43:37 +0000

I owe you a beer…

By: swliao

swliao — Thu, 03 Sep 2009 09:32:21 +0000

Yeah,I met the same problem and then I found I forget to load the kvm module after restart the computer.

By: Cory

Cory — Thu, 20 Aug 2009 01:09:47 +0000

Holy crap thank you. This saved my sanity.