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Re: [Qemu-discuss] Installed Ubuntu 14.04 and now getting "unknown OS ty

From: Hans Deragon
Subject: Re: [Qemu-discuss] Installed Ubuntu 14.04 and now getting "unknown OS type hvm" on my old VMs.
Date: Mon, 06 Oct 2014 12:33:42 -0400
User-agent: Roundcube Webmail/0.9.5


You put the finger on the problem.  In my xml, I got:

<type arch='x86_64' machine='pc-1.0'>hvm</type>
<boot dev='hd'/>

Now, how do I convert my VM to kvm? Does the image itself needs to be converted or only the xml?

My VMs are used at home and it has been years since I did not have to play with them; I just let them run. A testimony to the fabulous technology and stability behind KVM. The drawback is that I am not aware of the changes brought to KVM nor what format are my images and how to manipulate them (it has been too long). Pointers would be appreciated on how to go forward to convert them to the new version of KVM.

Best regards,
Hans Deragon

On 2014-10-06 08:42, Jakob Bohm wrote:
On 06/10/2014 04:13, Hans Deragon wrote:

I installed Ubuntu 14.04 64 bits and am now getting "unknown OS type
hvm" when I try 'virsh define <servername>' on my old VMs.

A search trough the web suggest that kernel modules are not loaded.  I
my case, they are:

# lsmod | fgrep kvm
kvm_intel             143109  0
kvm                   451511  1 kvm_intel
Let me take a wild guess: your <servername>.xml file specifies the use
of kvm in an oldway which is no longer supported by your new versions
of libvirt and qemu.

The phrase "hvm" (if that is how it is spelled in the XML) may refer
to a XEN hvm setup, not a Linux kvm setup.




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