[libvirt] [PATCH v2 2/2] qemu: Default to virtio-net where available

[Andrea Bolognani]

On Thu, 2015-09-03 at 09:53 +0100, Daniel P. Berrange wrote:
> I think we should just do nothing. If people/apps care about optimal
> defaults, nothing libvirt changes will make them happy. Apps need to
> be just using libosinfo to get the sensible defaults on a per OS
> basis.

This is not about optimal defaults though, it's about being
able to install the OS at all without having to explicitly
specify that you want to use virtio:
 
  $ sudo virt-install       \  
  [...]                     \  
  --os-variant=rhel7.0      \  
  --network network=default

  ERROR    internal error: early end of file from monitor:
  possible problem: 2015-09-03T09:00:42.154356Z qemu-kvm:
  -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:d4:d8:8f,\
  bus=pci.0,addr=0x1: 'rtl8139' is not a valid device model name

This happens because we assume rtl8139 will be available, but
that's not the case eg. on RHEL ppc64.

Cheers.

-- 
Andrea Bolognani
Software Engineer - Virtualization Team