2018-05-16 22:57:34,328+0100 ERROR (vm/1bc9dae8) [virt.vm] (vmId='1bc9dae8-a0ea-44b3-9103-5805100648d0') The vm start process failed (vm:943)

Traceback (most recent call last):

File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 872, in _startUnderlyingVm

self._run()

File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 2872, in _run

dom.createWithFlags(flags)

File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py", line 130, in wrapper

ret = f(*args, **kwargs)

File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 92, in wrapper

return func(inst, *args, **kwargs)

File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1099, in createWithFlags

if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)

libvirtError: Cannot get interface MTU on '': No such device

That's the specific error, some other information. It seems the GPU 'allocation' of uuid against the nvidia-xx mdev type is proceeding correctly, and the device is being created by the VM instantiation but the VM does not succeed in going up with this error. Any other logs or information relevant to help diagnose?