libvirt users - Feb 2014 - Rhel7 snap6 -- SR-IOV

Hi,
This is regarding SRIOV in Rhel7. I have added intel_iommu=on in grub.cfg file.
When I attach Virtual Function to VM and I try to poweron the VM, I get the
below error:

[root@Dell-Rhel7 ~]# virsh start rhel64x64GA
error: Failed to start domain rhel64x64GA
error: internal error: early end of file from monitor: possible problem:
qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: vfio:
failed to open /dev/vfio/vfio: Permission denied
qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: vfio:
failed to setup container for group 47
qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: vfio:
failed to get group 47
qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: Device
initialization failed.
qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8: Device
'vfio-pci' could not be initialized

We are facing this problem with both Emulex and Intel adapters. Please help me
to resolve this issue.

Thanks,
Murali.

On 02/24/2014 06:33 AM, Murali Krishna wrote:
> Hi,
> This is regarding SRIOV in Rhel7.
RHEL 7 is still in beta, and is a downstream project; this list cares
more about problems with upstream libvirt.git.  You may get better
response by opening a support ticket with Red Hat.
> I have added intel_iommu=on in grub.cfg file. When I attach Virtual
Function to VM and I try to poweron the VM, I get the below error:
> 
> [root@Dell-Rhel7 ~]# virsh start rhel64x64GA
> error: Failed to start domain rhel64x64GA
> error: internal error: early end of file from monitor: possible problem:
> qemu-kvm: -device vfio-pci,host=42:10.2,id=hostdev0,bus=pci.0,addr=0x8:
vfio: failed to open /dev/vfio/vfio: Permission denied
Have you checked the file permissions on the named file?  Is it
something that the qemu uid can access?


-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org