Public bug reported: neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb.ovn_db_sync.OvnSbSynchronizer
When the `sync_hostname_and_physical_networks` method run's it will compare host physical_networks to mappings in neutrons `segmenthostmappings` table. Any mappings in neutron that is not seen on OVN chassis is then treated as "stale" and cleaned up. This is problematic when there are other plug-ins/agents involved, for example ML2 networking-baremetal[2]. Any segment-host mapping created for baremetal nodes are deleted from the database. And since there is de-duplication[1] on updates from agents - the segment-host mappings are not re-created unless services are re-started or the baremetal node is deleted and re-created in the ironic service. The OvnSbSynchronizer should not remove mappings unless they belong to OVN hosts. [1] https://opendev.org/openstack/neutron/commit/176503e610aee16cb5799a77466579bc55129450 [2] https://opendev.org/openstack/networking-baremetal/src/branch/master/networking_baremetal/agent/ironic_neutron_agent.py ** Affects: neutron Importance: Undecided Status: In Progress -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/2040172 Title: [OVN] OvnSbSynchronizer - clean/delete segmenthostmappings for unrelated hosts Status in neutron: In Progress Bug description: neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb.ovn_db_sync.OvnSbSynchronizer When the `sync_hostname_and_physical_networks` method run's it will compare host physical_networks to mappings in neutrons `segmenthostmappings` table. Any mappings in neutron that is not seen on OVN chassis is then treated as "stale" and cleaned up. This is problematic when there are other plug-ins/agents involved, for example ML2 networking-baremetal[2]. Any segment-host mapping created for baremetal nodes are deleted from the database. And since there is de-duplication[1] on updates from agents - the segment-host mappings are not re-created unless services are re-started or the baremetal node is deleted and re-created in the ironic service. The OvnSbSynchronizer should not remove mappings unless they belong to OVN hosts. [1] https://opendev.org/openstack/neutron/commit/176503e610aee16cb5799a77466579bc55129450 [2] https://opendev.org/openstack/networking-baremetal/src/branch/master/networking_baremetal/agent/ironic_neutron_agent.py To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/2040172/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
