pci_add_option_rom: failed to find romfile "pxe-virtio.bin"

[Loïc Minier]

Hi

On a standard Ubuntu Server installation which I did around karmic and upgraded to lucid, I'm running lucid vms created with ubuntu-vm-builder.

I've noticed that on startup, /var/log/libvirt/qemu/vm-name.log says:
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 1024 -smp 2 -name vm-name -uuid eb33b11c-xxxx-xxxxxxxxxxxxxxx -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/vm-name.monitor,server,nowait -monitor chardev:monitor -boot c -drive file=/somepath/vms/vm-name/tmpHbobjA.qcow2,if=ide,index=0,boot=on -net nic,macaddr=52:54:xxxxx,vlan=0,model=virtio,name=virtio.0 -net tap,fd=41,vlan=0,name=tap.0 -serial none -parallel none -usb -vnc 127.0.0.1:0 -vga cirrus
pci_add_option_rom: failed to find romfile "pxe-virtio.bin"

the latter warning worries me, it suggests the virtio might not be used by default

I created the vm with:
sudo ubuntu-vm-builder kvm lucid \
        -d vm-name \
        --debug -v \
        -m 1024 --cpus=2 \
        --rootsize=16384 \
        --addpkg=zsh --addpkg=vim --addpkg=openssh-server \
        --hostname=vm-name \
        --mirror http://somemirror/ubuntu \
        --lang=en_US.UTF-8 \
        --timezone=Europe/Paris \
        --user=lool --name 'Loïc Minier' --pass "somepassword" \
        --ssh-key=`echo ~/.ssh/authorized_keys` --ssh-user-key=`echo ~/.ssh/authorized_keys` \
        --libvirt=qemu:///system --network=default

Cheers,

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: libvirt-bin 0.7.5-5ubuntu27.3
ProcVersionSignature: Ubuntu 2.6.32-25.43-server 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-server x86_64
Architecture: amd64
Date: Fri Sep 10 10:24:14 2010
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
SourcePackage: libvirt

[Chuck Short (zulcss)]

Ive seen this before as well.

chuck

[Serge Hallyn (serge-hallyn)]

You can get rid of this message by doing

  apt-get install kvm-pxe

[Loïc Minier (lool)]

May I suggest that we make this pulled by some task or by some package? Currently, the only way to get it is via testdrive-common.

or perhaps the vms created by ubuntu-vm-builder should not rely on this by defaut

Either way, this should work OOTB for ubuntu-vm-builder and/or qemu-kvm users

[Loïc Minier (lool)]

Note that kvm-pxe is in universe

[Serge Hallyn (serge-hallyn)]

The functionality you're not getting OOTB is pxe-booting over virtio
NIC. Is that what you need? If you are only worried about booting from
virtio disk, you're getting that. So the message is annoying, but not
harmful.

If OTOH you think we should be providing pxe-booting over virtio NIC
out of the box with qemu-kvm, then yeah something would need to be done,
and I'm not sure what.

(So please clarify whether pxe-boot over virtio is what you feel should be
supported without a separate package in universe)

[Dustin Kirkland  (kirkland)]

Right, so the message is a benign warning:
  pci_add_option_rom: failed to find romfile "pxe-virtio.bin"

If you're not trying to boot your VM over pxe-virtio, then you can safely ignore the message.

If you want to boot over pxe-virtio, or you want to silence the error message, simply:
  sudo apt-get install kvm-pxe

This could be solved by either:
 a) MIR'ing kvm-pxe and adding a qemu-kvm-common recommends on kvm-pxe
 b) patch qemu-kvm to silently ignore this condition

I think (a) would be desirable for Natty. Doubt this would make Maverick, though.

[Loïc Minier (lool)]

Ok; that's fine; I thought the warning was a symptom of either a broken setting in the generated libvirt config or missing dependencies; turns out it's just optional functionality (pxe booting) and be ignored, I'm fine with that

Thanks for checking this through with me!

[Dustin Kirkland  (kirkland)]

Sure, no problem, Loic.

I do think an MIR of kvm-pxe would be a good thing, though.