[virt-tools-list] virt-manger: KVM is not available.

[Florian Lindner]

Am Montag 02 Mai 2011, 16:23:10 schrieb Cole Robinson:
> On 05/01/2011 05:26 PM, Florian Lindner wrote:
> > Hello!
> > 
> > I have a problem with virt-manage saying my KVM wasn't available.
> > 
> > System is Archlinux, libvirtd 0.9.0, Kernel 2.6.38.
> > CPU is a Phenom X4, supports virtualization.
> > 
> > modprobe kvm and kvm-amd works fine:
> > 
> > May  1 23:19:48 localhost kernel: [  750.262215] kvm: Nested
> > Virtualization enabled
> > May  1 23:19:48 localhost kernel: [  750.262218] kvm: Nested Paging
> > enabled
> > 
> > starting up libvirtd:
> > 
> > May  1 23:21:23 localhost kernel: [  844.527695] Bridge firewalling
> > registered May  1 23:21:23 localhost kernel: [  844.537781] tun:
> > Universal TUN/TAP device driver, 1.6
> > May  1 23:21:23 localhost kernel: [  844.537784] tun: (C) 1999-2004 Max
> > Krasnyansky <maxk at qualcomm.com>
> > May  1 23:21:23 localhost avahi-daemon[1370]: Withdrawing workstation
> > service for .
> > May  1 23:21:23 localhost avahi-daemon[1370]: Withdrawing workstation
> > service for virbr0.
> > May  1 23:21:23 localhost kernel: [  844.737116] ip_tables: (C) 2000-2006
> > Netfilter Core Team
> > May  1 23:21:23 localhost kernel: [  844.752760] ip6_tables: (C)
> > 2000-2006 Netfilter Core Team
> > 
> > 
> > start virt-manager as user but granting root priviliges when asked on
> > startup. When creating a new VM it says that KVM is not available.
> > 
> > qemu -enable-kvm has worked fine so far.
> > 
> > Why is that error message?
> > 
> > Thanks,
> > 
> > Florian
> 
> That error means that libvirt did not detect KVM support. Libvirt checks
> for a /usr/bin/qemu* binary, /dev/kvm, and proper permissions to run both.

Permissions should be fine:

florian at horus ~ % groups
sys kvm scanner florian

florian at horus ~ % ll /dev/kvm
crw-rw----+ 1 root kvm 10, 232  2. Mai 21:04 /dev/kvm

florian at horus ~ % ll /usr/bin/qemu*
-rwxr-xr-x 1 root root 2961888 21. Feb 21:10 /usr/bin/qemu*
[...]
-rwxr-xr-x 1 root root 3033280 21. Feb 21:10 /usr/bin/qemu-system-x86_64*
-rwxr-xr-x 1 root root 2055048 21. Feb 21:10 /usr/bin/qemu-x86_64*


> What's the output of virsh --connect qemu:///session capabilities | grep
> kvm and virsh --connect qemu:///system capabilities | grep kvm ?

They both return nothing, run as user as well as being run as root. When run 
as user the second commands asks for root priviliges which are granted.

Any ideas?

Thanks!

Florian