[ovs-discuss] Is upgrade from v2.11 to OVN v20.09 supported?

[Karthik Chandrashekar]

OVN upgrade documentation talks about upgrading the ovn-controller first followed by upgrade to OVN database and ovn-northd. However this doesn’t seem to work for upgrade from v2.11 to OVN v20.09.

v2.11 is running "OVN_Southbound" schema, version="2.0.2"
When you upgrade the ovn-controller first the controller tries to register the Chassis and fails.

2021-02-24T19:27:19.640Z|00073|ovsdb_idl|WARN|transaction error: {"details":"No column other_config in table Chassis.","error":"unknown column","syntax":"{\"encaps\":[\"named-uuid\",\"rowbd2a07f5_ca59_447e_9972_fb02458c8e53\"],\"external_ids\":[\"map\",[[\"datapath-type\",\"\"],[\"iface-types\",\"erspan,geneve,gre,gtpu,internal,ip6erspan,ip6gre,lisp,patch,stt,system,tap,vxlan\"],[\"is-interconn\",\"false\"],[\"ovn-bridge-mappings\",\"physnet0:br0\"],[\"ovn-chassis-mac-mappings\",\"\"],[\"ovn-cms-options\",\"\"],[\"ovn-enable-lflow-cache\",\"true\"],[\"ovn-monitor-all\",\"false\"]]],\"hostname\":\"karthikc_controller_2\",\"name\":\"node_2\",\"other_config\":[\"map\",[[\"datapath-type\",\"\"],[\"iface-types\",\"erspan,geneve,gre,gtpu,internal,ip6erspan,ip6gre,lisp,patch,stt,system,tap,vxlan\"],[\"is-interconn\",\"false\"],[\"ovn-bridge-mappings\",\"physnet0:br0\"],[\"ovn-chassis-mac-mappings\",\"\"],[\"ovn-cms-options\",\"\"],[\"ovn-enable-lflow-cache\",\"true\"],[\"ovn-monitor-all\",\"false\"]]]}"}

The SB schema is unaware of this new column and hence we are in a transient state where the chassis don’t show till we complete the schema and northd upgrades. Is this expected? What is the suggested order of upgrades to move from v2.11 to OVN v20.09?

Thank You,
Karthik C

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