Don't use default iface 'ovs-system' on xen setup

[rfan1]

https://progress.opensuse.org/issues/126647

• Verification run: https://openqa.suse.de/tests/11395040#

[rfan1]

@alice-suse
May I ask for your kindly review since the code changes are for xen hypervisor?

[alice-suse]

@nanzhg Nan is mostly involved in svirt backend for VT test. Would you like to give it a review ?

[nicksinger]

Why is 'ovs-system' in "bridges" in the first place? Is this some default from virsh? Otherwise it looks fine for me - I just wonder if we layer multiple workarounds on top of each other now

[dzedro]

The worker network setup is somehow wild, I would imagine to have generic default working worker network setup, without need of this additional configuration.

[rfan1]

Why is 'ovs-system' in "bridges" in the first place? Is this some default from virsh? Otherwise it looks fine for me - I just wonder if we layer multiple workarounds on top of each other now

I would say the ovs-system is the default one on xen server. however, I don't know the background why we used 'br0' as source bridge to build VMs.
based on QA testing purpose, seems we have worked for a long time with br0

[rfan1]

The worker network setup is somehow wild, I would imagine to have generic default working worker network setup, without need of this additional configuration.

I agree with you on this point, once we have a dedicated source bridge to carry out the tests, it is easy. :)

[nanzhg]

LGTM. Still a question, from the job title "sle-15-SP5-JeOS-for-kvm-and-xen-Updates-x86_64-Buildrfan0619-xen_ovs-system@svirt-xen-hvm", it's related to test ovs-system on Xen, but I can't see this test cover ovs-system iface. So what's the aim of this test?

[rfan1]

LGTM. Still a question, from the job title "sle-15-SP5-JeOS-for-kvm-and-xen-Updates-x86_64-Buildrfan0619-xen_ovs-system@svirt-xen-hvm", it's related to test ovs-system on Xen, but I can't see this test cover ovs-system iface. So what's the aim of this test?

I cloned the failed to job to run this VR to make sure my code changes can work. :) , it was not intend to test ovs-system:

openqa-clone-job --from http://openqa.suse.de --host http://openqa.suse.de 11390499 _GROUP_ID=0 -skip-download --skip-chained-deps BUILD=rfan0619 TEST=xen_ovs-system NOLOGS=1 RETRY=0 CASEDIR=https://github.com/rfan1/os-autoinst-distri-opensuse.git#xen_ovs-system