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Bug 1779121

Summary: [OVN] ovn-controller: Add command to trigger a full recompute.
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Dumitru Ceara <dceara>
Component: ovn2.12Assignee: Dumitru Ceara <dceara>
Status: CLOSED ERRATA QA Contact: Jianlin Shi <jishi>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: FDP 19.GCC: ctrautma, jishi, kfida, ralongi
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
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Clone Of:
: 1779124 (view as bug list) Environment:
Last Closed: 2020-01-21 06:20:15 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1779124    

Description Dumitru Ceara 2019-12-03 10:57:19 UTC 
Description of problem:
In case the incremental processing code in ovn-controller hits a bug and the state is inconsistent there's no way to trigger a full recompute that would properly install all flows.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. ovn-appctl -t ovn-controller recompute
2.
3.

Actual results:
Command doesn't exist.

Expected results:
The command should run and force a full recompute in ovn-controller.


Additional info:
Comment 3 Jianlin Shi 2019-12-30 03:15:16 UTC 
Verified on ovn2.11.1-24：


server:

[root@dell-per740-12 bz1779124]# rpm -qa | grep -E "openvswitch|ovn"
ovn2.11-central-2.11.1-24.el8fdp.x86_64
ovn2.11-2.11.1-24.el8fdp.x86_64
openvswitch2.11-2.11.0-35.el8fdp.x86_64
ovn2.11-host-2.11.1-24.el8fdp.x86_64
openvswitch-selinux-extra-policy-1.0-19.el8fdp.noarch
[root@dell-per740-12 bz1779124]# cat setup.sh 
#!/bin/bash

systemctl start openvswitch
systemctl start ovn-northd
ovn-nbctl set-connection ptcp:6641
ovn-sbctl set-connection ptcp:6642

ovs-vsctl set open . external_ids:system-id=hv1 external_ids:ovn-remote=tcp:20.0.30.25:6642 external_ids:ovn-encap-type=geneve external_ids:ovn-encap-ip=20.0.30.25
systemctl restart ovn-controller

ip netns add server0
ip link add veth0_s0 netns server0 type veth peer name veth0_s0_p
ip netns exec server0 ip link set lo up
ip netns exec server0 ip link set veth0_s0 up
ip netns exec server0 ip link set veth0_s0 address 00:00:00:01:01:02
ip netns exec server0 ip addr add 192.168.1.1/24 dev veth0_s0

ovs-vsctl add-port br-int veth0_s0_p
ip link set veth0_s0_p up
ovs-vsctl set interface veth0_s0_p external_ids:iface-id=ls1p1

ovn-nbctl ls-add ls1
ovn-nbctl lsp-add ls1 ls1p1
ovn-nbctl lsp-set-addresses ls1p1 00:00:00:01:01:02

ovn-nbctl lsp-add ls1 ls1p2
ovn-nbctl lsp-set-addresses ls1p2 00:00:00:01:02:02

client:
[root@hp-dl380pg8-12 bz1779124]# rpm -qa | grep -E "openvswitch|ovn"                                                                                                                          
openvswitch2.11-2.11.0-35.el7fdp.x86_64
ovn2.11-2.11.1-24.el7fdp.x86_64
openvswitch-selinux-extra-policy-1.0-14.el7fdp.noarch
ovn2.11-host-2.11.1-24.el7fdp.x86_64
ovn2.11-central-2.11.1-24.el7fdp.x86_64
[root@hp-dl380pg8-12 bz1779124]# cat setup.sh 
#!/bin/bash

systemctl start openvswitch
ovs-vsctl set open . external_ids:system-id=hv0 external_ids:ovn-remote=tcp:20.0.30.25:6642 external_ids:ovn-encap-type=geneve external_ids:ovn-encap-ip=20.0.30.26
systemctl restart ovn-controller

ip netns add client0
ip link add veth0_c0 netns client0 type veth peer name veth0_c0_p
ip netns exec client0 ip link set lo up
ip netns exec client0 ip link set veth0_c0 up
ip netns exec client0 ip link set veth0_c0 address 00:00:00:01:02:02
ip netns exec client0 ip addr add 192.168.1.2/24 dev veth0_c0

ovs-vsctl add-port br-int veth0_c0_p
ip link set veth0_c0_p up
ovs-vsctl set interface veth0_c0_p external_ids:iface-id=ls1p2


recompute on server:

[root@hp-dl380pg8-12 bz1779124]# ovs-appctl -t ovn-controller recompute                                                                                                                       
[root@hp-dl380pg8-12 bz1779124]# ip netns exec client0 ping 192.168.1.1 -c 5
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.31 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.212 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.184 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.202 ms
64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=0.190 ms

recompute on client:
[root@hp-dl380pg8-12 bz1779124]# ovs-appctl -t ovn-controller recompute                                                                                                                       
[root@hp-dl380pg8-12 bz1779124]# ip netns exec client0 ping 192.168.1.1 -c 5
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.31 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.212 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.184 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.202 ms
64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=0.190 ms

--- 192.168.1.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4000ms
rtt min/avg/max/mdev = 0.184/0.421/1.318/0.448 ms
Comment 4 Jianlin Shi 2019-12-30 03:39:30 UTC 
Verified on 2.12.0-19:

server:

[root@hp-dl380pg8-12 bz1779124]# ovn-appctl -t ovn-controller recompute
[root@hp-dl380pg8-12 bz1779124]# ip netns exec client0 ping 192.168.1.1 -c 5
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.220 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.197 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.200 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.195 ms
64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=0.200 ms

--- 192.168.1.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3999ms
rtt min/avg/max/mdev = 0.195/0.202/0.220/0.015 ms
[root@hp-dl380pg8-12 bz1779124]# rpm -qa | grep -E "openvswitch|ovn"
ovn2.12-central-2.12.0-19.el7fdp.x86_64
openvswitch-selinux-extra-policy-1.0-14.el7fdp.noarch
ovn2.12-2.12.0-19.el7fdp.x86_64
ovn2.12-host-2.12.0-19.el7fdp.x86_64
openvswitch2.12-2.12.0-12.el7fdp.x86_64

client:

[root@hp-dl380pg8-12 bz1779124]# ovn-appctl -t ovn-controller recompute
[root@hp-dl380pg8-12 bz1779124]# ip netns exec client0 ping 192.168.1.1 -c 5
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.220 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.197 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.200 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.195 ms
64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=0.200 ms

--- 192.168.1.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3999ms
rtt min/avg/max/mdev = 0.195/0.202/0.220/0.015 ms
[root@hp-dl380pg8-12 bz1779124]# rpm -qa | grep -E "openvswitch|ovn"
ovn2.12-central-2.12.0-19.el7fdp.x86_64
openvswitch-selinux-extra-policy-1.0-14.el7fdp.noarch
ovn2.12-2.12.0-19.el7fdp.x86_64
ovn2.12-host-2.12.0-19.el7fdp.x86_64
openvswitch2.12-2.12.0-12.el7fdp.x86_64
Comment 6 errata-xmlrpc 2020-01-21 06:20:15 UTC 
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-2020:0167