3:04 a.m.
I wanted to know if it's possible to use OVN networking and virtio simultaneously in
the same VM? Or am I wasting my time trying to get it to work?
When I try to define a VM and power it on with both types defined, networking fails to
work on both. E.g.:
<interface type='bridge'>
<mac address='xx:xx:xx:xx:xx:xx'/>
<source bridge='foo'/>
<virtualport type='openvswitch'>
</virtualport>
<target dev='devfoo'/>
</interface>
<interface type='bridge'>
<mac address='xx:xx:xx:xx:xx:xx'/>
<source bridge='bar'/>
<virtualport type='openvswitch'>
</virtualport>
<target dev='devbar'/>
</interface>
<interface type='bridge'>
<mac address='xx:xx:xx:xx:xx:xx/>
<source bridge='foo2'/>
<model type='virtio'/>
<target dev='devfoo2/>
</interface>
Notice the 'virtio' setting on the third NIC. If I remove that NIC from the xml
or if set that NIC as a virtualport on openvswitch like the other two NICs, networking
works fine.
Am I missing something? Or is this a silly question to even ask?
5:04 p.m.
On Fri, Feb 14, 2020 at 8:05 PM Andre Goree <agoree(a)staff.atlantic.net>
wrote:
I wanted to know if it's possible to use OVN networking and
virtio
simultaneously in the same VM? Or am I wasting my time trying to get it to
work?
In oVirt 4.x I was able to do it and also to intermix normal vnic and OVN
based vnic.
I needed to reproduced a problem I had in a physical Red Hat Cluster. So i
"cloned" the physical nodes to oVirt VMs and the vnic of the intracluster
network of this virtual RedHat cluster was put on OVN, while the production
vnic was on a normal lan.
Both with virtio as the network type and the second with openvswitch
virtualport.
I just simulate it on a RHV 4.3.7 env and it starts ok
the snippet of the dynamic xml definition that RHV creates is this one
(note some RHV related parameters not pertinent to your env I think).
Note also that on OVN based nics I often put 1442 as the mtu size.
<interface type='bridge'>
<mac address='00:1a:4a:16:01:1d'/>
<source bridge='vlan65'/>
<target dev='vnet0'/>
<model type='virtio'/>
<driver name='vhost' queues='2'/>
<filterref filter='vdsm-no-mac-spoofing'/>
<link state='down'/>
<mtu size='1500'/>
<alias name='ua-8ccec0e9-c32d-4021-8a06-3d24280536b8'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x03'
function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='00:1a:4a:16:01:20'/>
<source bridge='br-int'/>
<virtualport type='openvswitch'>
<parameters interfaceid='9c0927a8-2256-44f3-b089-0e8923055747'/>
</virtualport>
<target dev='vnet1'/>
<model type='virtio'/>
<driver name='vhost' queues='2'/>
<link state='up'/>
<mtu size='1442'/>
<alias name='ua-ea95c1fe-b226-4a64-ad30-ee5cb2da08ca'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x06'
function='0x0'/>
</interface>
On this particular environment RHV provides these packages:
ovn2.11-2.11.1-8.el7fdp.x86_64
openvswitch2.11-2.11.0-26.el7fdp.x86_64
libvirt-4.5.0-23.el7_7.3.x86_64
qemu-kvm-rhev-2.12.0-33.el7_7.4.x86_64
Which kind of errors do you get in term of functionality? no connection
between two VMs on the same OVN networking subnet?
How did you configure OVN? I ask because in oVirt/RHV now you do it from a
general setup command and then through web gui admin, not manually
Your OS?
HIH,
Gianluca
3:48 a.m.
From: Gianluca Cecchi <gianluca.cecchi(a)gmail.com>
Which kind of errors do you get in term of functionality? no connection between two VMs on
the same OVN networking subnet?
How did you configure OVN? I ask because in oVirt/RHV now you do it from a general setup
command and then through web gui admin, not manually
Your OS?
HIH,
Gianluca
=======
Pardon the formatting (yay OWA).
Your notes indeed helped! I was not specifying "<model
type='virtio'/>" for my openvswitch vNICs...doing so made everything work
as expected! Thanks again :)
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Andre Goree -
Gianluca Cecchi