Hi All,
we are facing issue in VM communication after live-migration.
Using Openstack mitaka and ODL stable boron.
After VM migrated to the new Node table 110 flow is missing we have analyzed
this issue.
Observation:
1. VM created in Node1 port is added in OVS and netvirt writes the flow in
config DS with flow ID "UcastOut_5052_4_fa:16:3e:bc:38:e6" openflowplugin
writes the same to OVS and flow is reflected in OVS Node1 "cookie=0x0,
duration=100.862s, table=110, n_packets=80, n_bytes=8562,
tun_id=0x13bc,dl_dst=fa:16:3e:bc:38:e6 actions=output:4"
2.Node2 table 100 flow installed using tunnel port "cookie=0x0,
duration=99.309s, table=110, n_packets=0, n_bytes=0,
tun_id=0x13bc,dl_dst=fa:16:3e:bc:38:e6 actions=output:2" flow ID is "
TunnelOut_5052_2_fa:16:3e:bc:38:e6"
3.During live migration VM is moved from Node1 to Node2.
New port is added in Node2. Netvirt writes the flow in config DS with flow
ID "UcastOut_5052_3_fa:16:3e:bc:38:e6" .openflow plugin writes the same to OVS.
But in OVS already there is a flow in OVS with same MAC and tun_id match
this new flow overwrites the odl one in both Openstack Nodes.
4.Delete port is called for Node1 once the VM migrated to Node2. Here
netvirt removing the the flow ID which was created initially in config DS
openflowplugin also tries to remove the flow in OVS since the ODL flow is
overwritten openflowplugin removing the new flow which causing the
communication issue.
5.Final state Config DS has the flow information But OVS flow missing.
can anyone confirm is there any issue in openflowplugin module?
Regards,
Bala
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