[libvirt-users] Problem creating VM: "tap: not a valid disk type"

Daniel P. Berrange berrange at redhat.com
Tue Feb 2 19:23:03 UTC 2010

On Sat, Jan 30, 2010 at 10:31:46PM +0100, Arik Raffael Funke wrote:
> Hi,
> I am having problems creating VMs in virt-manager.
> I have played with different xen hypervisor versions 3.0 & 3.4 (with rpm 
> -i --force) but have in principle gone back to the originals. - Though I 
> cannot absolutely exclude that something has gone wrong.
> In principle I am using rhel 5.4 with the gitco xen 3.4 hypervisor.
> Can anybody put me on the right track with the attached error message? 
> Note, the storage file I am attempting to use does exist.
> Many thanks,
> Arik
> ===
> Unable to complete install 'libvirt.libvirtError POST operation failed: 
> xend_post: error from xen daemon: (xend.err 'Error creating domain: 
> Invalid Configuration: tap: not a valid disk type')

For some reason this shows that Xen is rejecting the 'tap:aio' disk
access type, which is rather unexpected - probably need upstream
Xen to answer that one

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