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Bug
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Resolution: Unresolved
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Undefined
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None
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None
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False
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False
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rhel-9
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rhel-sst-network-fastdatapath
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ssg_networking
We have face some issue at kubevirt live migration with ovn-k localnet topology where traffic is send over the old node disabled LSP, so traffic suffer from 20 seconds packet loss until that old LSP is deleted.
Looking deeper looks like even if the old LSP has the enabled flag to false there are still some mac logical flows steering the trafic there that prevent traffic from going over the localnet port to reach the migrated VM.
Even configuring ignore_lsp_down at NB global is not working
ovnk ovn-worker2 ovn-nbctl list nb-global
_uuid : f6233167-37c5-485c-b53d-1074eb50dd86
connections : []
external_ids : {}
hv_cfg : 2
hv_cfg_timestamp : 1733908219404
ipsec : false
name : ovn-worker2
nb_cfg : 2
nb_cfg_timestamp : 1733908219403
options : {e2e_timestamp="1733908969", ignore_lsp_down="false", mac_prefix="d2:6f:39", max_tunid="16711680", name=ovn-worker2, northd-backoff-interval-ms="300", northd_internal_version="24.09.1-20.37.0-73.6", svc_monitor_mac="32:7c:04:12:93:2c"}
sb_cfg : 2
sb_cfg_timestamp : 1733908219403
ssl : []
These are the not deleted flows
_uuid : 4570589b-da6b-4ff6-badc-1ca15cf0cd21 actions : "outport <-> inport; next;" controller_meter : [] external_ids : {source="northd.c:12767", stage-name=ls_in_check_port_sec} flow_desc : [] logical_datapath : 2e72e1f4-eb71-4aaf-b409-842783389b18 logical_dp_group : [] match : "((ip4 && icmp4.type == 3 && icmp4.code == 4) || (ip6 && icmp6.type == 2 && icmp6.code == 0)) && eth.src == 42:f9:f9:7b:db:b8 && outport == \"kv.live.migration.9697.net1_kv-live-migration-9697_virt-launcher-worker1-4bkhc\" && !is_chassis_resident(\"kv.live.migration.9697.net1_kv-live-migration-9697_virt-launcher-worker1-4bkhc\") && flags.tunnel_rx == 1" pipeline : ingress priority : 110 table_id : 0 tags : {} hash : 0
_uuid : dde443e8-0b51-4720-9f41-a4a9bb936bf8 actions : "outport = \"kv.live.migration.9697.net1_kv-live-migration-9697_virt-launcher-worker1-4bkhc\"; output;" controller_meter : [] external_ids : {source="northd.c:10321", stage-hint=dbdc4d71, stage-name=ls_in_l2_lkup} flow_desc : [] logical_datapath : 2e72e1f4-eb71-4aaf-b409-842783389b18 logical_dp_group : [] match : "eth.dst == 42:f9:f9:7b:db:b8" pipeline : ingress priority : 50 table_id : 28 tags : {} hash : 0
- blocks
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SDN-5490 OVN-Kubernetes LSP up/down for live migration for secondary UDN - localnet topology
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- In Progress
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