Re: kvm/qemu virtual machine can't find hard drives

[Dejan Jocic <jodejka@gmail.com>]

On 18-08-17, Gary Roach wrote:
> I really appreciate all of you quick responses.
> 
> For some unknown reason, when I searched the  Debian database virt came up
> empty. This time it didn't. So, at this point, its go RTFM.
> 
> The manual will probably clear it up but When trying to run virt-manager, I
> did get the following error:
> 
> unable to complete install: 'unsupported configuration: CPU mode 'custom'
> for x86_64 kvm domain on x86_64 host is not supported by hypervisor'
> 
> Traceback (most recent call last):
>   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 88, in
> cb_wrapper
>     callback(asyncjob, *args, **kwargs)
>   File "/usr/share/virt-manager/virtManager/create.py", line 2288, in
> _do_async_install
>     guest.start_install(meter=meter)
>   File "/usr/share/virt-manager/virtinst/guest.py", line 461, in
> start_install
>     doboot, transient)
>   File "/usr/share/virt-manager/virtinst/guest.py", line 396, in
> _create_guest
>     self.domain = self.conn.createXML(install_xml or final_xml, 0)
>   File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3523, in
> createXML
>     if ret is None:raise libvirtError('virDomainCreateXML() failed',
> conn=self)
> libvirtError: unsupported configuration: CPU mode 'custom' for x86_64 kvm
> domain on x86_64 host is not supported by hypervisor
> 
> I'll give things another try and may be back later. If not, thanks again.
> 
> Gary R
> 

Do this:

grep -E -c '(vmx|svm)' /proc/cpuinfo

if you get 0, your CPU does not support virtualisation with KVM. If you
get more than zero, make sure that virtualisation is enabled in your
BIOS settings.