On Wed, Oct 10, 2018 at 10:18 AM Pino Toscano <ptoscano@redhat.com> wrote:

On Tuesday, 9 October 2018 20:16:04 CEST Nir Soffer wrote:
> I'm trying to build fedora-27 image for testing uploads:
>
> $ virt-builder fedora-27 -o /var/tmp/fedora-27.img
> ...
> [ 25.2] Opening the new disk
> virt-builder: error: libguestfs error: bridge ‘virbr0’ not found. Try
> running:
>
> brctl show
>
> to get a list of bridges on the host, and then selecting the
> bridge you wish the appliance network to connect to using:
>
> export _SETTINGS=network_bridge=<bridge name>

The libvirt backend uses a network bridge on the host to setup the
networking in the guest, which is enabled by default in virt-builder.

OK, now it is clear why bypassing libvirt avoids this issue.

So maybe I'm missing some libvirt package required for creating the

bridge?

libvirt is installed by vdsm, which requires:

libvirt-client

libvirt-daemon-config-nwfilter

libvirt-daemon-kvm

libvirt-lock-sanlock

libvirt-python

> I don't want to add bridges to my new fresh oVirt test host, and
> remember that this used to work previously without the bridge.

"used to work" which version with?

What was available in Fedora 28 2-3 month ago. The vm used for

running this was lost, so I don't have more specific info.

And which version are you using now?

$ rpm -q libguestfs-tools-c

libguestfs-tools-c-1.38.4-1.fc28.x86_64

Nir