[libvirt-users] "INTx fd" busy error on VM startup at boot, subsequent startup okay
Hey all,
I'm getting an error starting a libvirt managed qemu/kvm VM at physical
host boot time, but manually starting it afterwards works fine. This is
on a Ubuntu Wily i7-4790 box running Linux 4.2 and libvirt 1.2.16.
There is a legacy (5V) PCI card being passed through to the VM, the
error seems to relate to that.
The error that always appears at boot in
`/var/log/libvirt/qemu/test-vm.log` is:
2016-01-11T05:29:28.487935Z qemu-system-x86_64: -device
vfio-pci,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x4: vfio: Error:
Failed to setup INTx fd: Device or resource busy
2016-01-11T05:29:28.488148Z qemu-system-x86_64: -device
vfio-pci,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x4: Device
initialization failed
2016-01-11T05:29:28.488169Z qemu-system-x86_64: -device
vfio-pci,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x4: Device
'vfio-pci' could not be initialized
After the physical machine has completed booting, starting the VM via
virsh or virt-manager works fine.
The card is an old Firewire card. I have blacklisted the firewire
modules on the physical machine so they aren't loaded, but is it
possible that the kernel, udev or some other process still has access
to the device when systemd starts the libvirt-bin service?
Any clues greatly appreciated.
Thanks,
//Mike
--
⊨ Michael Gratton, Percept Wrangler.
⚙ <http://mjog.vee.net/>