Bug 1666673

The patch to support this feature is submitted upstream - https://patchwork.ozlabs.org/patch/1025421/
The patch commit has more details about the RFE.

Hi Numan,
   To test this function on sriov environment,is it correct way to add the nic (we create vf ports on it) to the ovs bridge which has ovn-bridge-mappings setting for the local net port? I know that the vf has been attached to the vm,but I don't know how to connect it to ovn.

Hi Haidong Li,

You don't have to connect to the OVN.

What needs to be done is

 1. Boot a VM and associate an sr-iov NIC to it. 
 2. Create  a logical port in OVN NB DB and as usual associate mac-IP
 3. Set the type of the logical port to external
 4. Create an HA_Chasss_Group in OVN NB DB with one ha chassis or more as you prefer.
 5. HA Chassis in this group should be connected to a same physical switch as the SR-IOC NIC is connected to.

When the SR-IOV VM sends a DHCP request, the master ovn-controller  (which claims this logical port) will reply the DHCP requests.

Please take a look at this test case. You may get some idea. If you any doubts feel free to ask here or drop an email.

https://github.com/openvswitch/ovs/blob/master/tests/ovn.at#L12537

The commit message here may give you more information - https://github.com/openvswitch/ovs/commit/96080083581275afaec8bc281d6a648aff7ef39e#diff-97d4cf929e4894ef95c4bfde3f896c34

Yes,I have to ask some questions about the case in github:

1. Is the vm with sriov NIC in one of the HA Chassis?
2. I saw the configuration in case of github,line 12599, I don't know what is the "hv1-ext1" port,is it a physical nic with sriov?
https://github.com/openvswitch/ovs/blob/master/tests/ovn.at#L12599

ovs-vsctl -- add-port br-phys hv1-ext1 -- \
    set interface hv1-ext1 options:tx_pcap=hv1/ext1-tx.pcap \
    options:rxq_pcap=hv1/ext1-rx.pcap \
    ofport-request=2

Many thanks Numan, I have read the case you provide and can understand the topo with your help.
I know how to test it now and will add new test case to my environment soon.

verified on the latest version:
[root@hp-dl385pg8-07 ovn_ha]# rpm -qa | grep openvswitch
openvswitch2.11-2.11.0-9.el7fdp.x86_64
openvswitch-selinux-extra-policy-1.0-11.el7fdp.noarch
kernel-kernel-networking-openvswitch-ovn_ha-1.0-34.noarch
[root@hp-dl385pg8-07 ovn_ha]# rpm -qa | grep ovn
ovn2.11-central-2.11.0-16.el7fdp.x86_64
ovn2.11-2.11.0-16.el7fdp.x86_64
ovn2.11-host-2.11.0-16.el7fdp.x86_64
kernel-kernel-networking-openvswitch-ovn_ha-1.0-34.noarch

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::   TEST PROTOCOL
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

    Package       : kernel
    Installed     : kernel-3.10.0-1040.el7.x86_64
    beakerlib RPM : beakerlib-1.17-13.el7bkr.1.noarch
    bl-redhat RPM : beakerlib-redhat-1-32.el7bkr.noarch
    Test version  : developer
    Test started  : 2019-05-07 04:34:25 EDT
    Test finished : 2019-05-07 04:45:10 EDT (still running)
    Test duration : 645 seconds
    Test name     : /kernel/networking/openvswitch/ovn_ha
    Distro        : Red Hat Enterprise Linux Server release 7.7 Beta (Maipo)
    Hostname      : hp-dl385pg8-07.rhts.eng.pek2.redhat.com
    Architecture  : x86_64
    CPUs          : 24 x AMD Opteron(tm) Processor 6344
    RAM size      : 23895 MB
    HDD size      : 267.46 GB

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::   Test description
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

PURPOSE of /kernel/networking/openvswitch/ovn_ha
Description: OVN ha test
Author: haidong li <haili>


::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::   Setup
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::   Duration: 56s
::   Assertions: 0 good, 0 bad
::   RESULT: PASS


::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::   ovn_test_external
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:: [ 04:45:10 ] :: [   PASS   ] :: Command 'ovn_external' (Expected 0, got 0)
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::   Duration: 588s
::   Assertions: 1 good, 0 bad
::   RESULT: PASS


::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::   /kernel/networking/openvswitch/ovn_ha
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:: [ 04:45:10 ] :: [   LOG    ] :: JOURNAL XML: /var/tmp/beakerlib-qIcYPBd/journal.xml
:: [ 04:45:10 ] :: [   LOG    ] :: JOURNAL TXT: /var/tmp/beakerlib-qIcYPBd/journal.txt
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
::   Duration: 645s
::   Phases: 2 good, 0 bad
::   OVERALL RESULT: PASS



job link:
https://beaker.engineering.redhat.com/recipes/6853666#task92603804

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2019:1385