Hi, I’ve faced with a next issue using latest OVN (master branch) with OVN-IC enabled: ovn-northd CPU utilisation was at ~70-80% and ovsdb-server serving OVN_Southbound DB was also under heavy load.
In ovn-northd.log file there were warnings: 2021-10-01T11:14:43.548Z|18845|northd|INFO|deleting Datapath_Binding dd6af7f7-ea46-4496-988a-e7f9828924d0 with duplicate external-ids:logical-switch/router ec35e3e0-2674-47e7-b645-2c9b8b31865b 2021-10-01T11:14:44.148Z|18846|poll_loop|INFO|Dropped 32 log messages in last 6 seconds (most recently, 0 seconds ago) due to excessive rate 2021-10-01T11:14:44.148Z|18847|poll_loop|INFO|wakeup due to [POLLIN] on fd 19 (172.20.33.110:55202<->172.20.33.102:16642) at lib/stream-ssl.c:832 (69% CPU usage) 2021-10-01T11:14:48.336Z|18848|ovsdb_idl|WARN|Dropped 307 log messages in last 60 seconds (most recently, 0 seconds ago) due to excessive rate 2021-10-01T11:14:48.336Z|18849|ovsdb_idl|WARN|transaction error: {"details":"Deletion of 1 weak reference(s) to deleted (or never-existing) rows from column \"datapath\" in \"IP_Multicast\" row 72bac803-e484-4358-9e48-11911c8aa16f caused this column to become empty, but constraints on this column disallow an empty column.","error":"constraint violation"} I checked datapath by reported logical-switch id: ~]# ovn-sbctl find datap external_ids:logical-switch=ec35e3e0-2674-47e7-b645-2c9b8b31865b _uuid : 7e045551-7700-4a50-b0aa-02cb4e1be59d external_ids : {interconn-ts=vpc-CCF01DF6-rtb-216BABB1-global, logical-switch="ec35e3e0-2674-47e7-b645-2c9b8b31865b", name=vpc-CCF01DF6-rtb-216BABB1-global} load_balancers : [] tunnel_key : 16712519 _uuid : dd6af7f7-ea46-4496-988a-e7f9828924d0 external_ids : {interconn-ts=vpc-CCF01DF6-rtb-216BABB1-global, logical-switch="ec35e3e0-2674-47e7-b645-2c9b8b31865b", name=vpc-CCF01DF6-rtb-216BABB1-global} load_balancers : [] tunnel_key : 5 It refers to ovn-ic transit switch: ~]# ovn-ic-sbctl list datapath vpc-CCF01DF6-rtb-216BABB1-global _uuid : fc159fa4-d5ba-46ed-a54c-d00745091021 external_ids : {} transit_switch : vpc-CCF01DF6-rtb-216BABB1-global tunnel_key : 16712519 ~]# ovn-ic-nbctl list transit vpc-CCF01DF6-rtb-216BABB1-global _uuid : b5312889-92f9-40fe-98f9-2ea7ce3debcc external_ids : {} name : vpc-CCF01DF6-rtb-216BABB1-global other_config : {} The problem ip-multicast document: ~]# ovn-sbctl find ip-mul datapath=dd6af7f7-ea46-4496-988a-e7f9828924d0 _uuid : 72bac803-e484-4358-9e48-11911c8aa16f datapath : dd6af7f7-ea46-4496-988a-e7f9828924d0 enabled : false eth_src : "" idle_timeout : 300 ip4_src : "" ip6_src : "" querier : true query_interval : 150 query_max_resp : 1 seq_no : 0 table_size : 2048 I tried manually destroy this ip_multicast document, which blocked deletion of datapath document: ~]# ovn-sbctl destroy ip-mul 72bac803-e484-4358-9e48-11911c8aa16f ~]# ovn-sbctl list ip-mul 72bac803-e484-4358-9e48-11911c8aa16f ovn-sbctl: no row "72bac803-e484-4358-9e48-11911c8aa16f" in table IP_Multicast And problem was resolved. ovn-northd daemon stopped consuming CPU and excess datapath was deleted automatically. ~]# ovn-sbctl find datapath external_ids:interconn-ts=vpc-CCF01DF6-rtb-216BABB1-global _uuid : 7e045551-7700-4a50-b0aa-02cb4e1be59d external_ids : {interconn-ts=vpc-CCF01DF6-rtb-216BABB1-global, logical-switch="ec35e3e0-2674-47e7-b645-2c9b8b31865b", name=vpc-CCF01DF6-rtb-216BABB1-global} load_balancers : [] tunnel_key : 16712519 The main problem here is that northd was entirely blocked. No processing to SB was done. Even ovn-controllers couldn’t claim new ports. No changes were propagated, so this is critial issue. Can anybody help understand the reason for this? Regards, Vladislav Odintsov _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev