Hi
When we try to migrate a guest with 12 NICs, we find libvirt will try
to get per-port data in finish phase, it makes the guest paused for
several hundred milliseconds.
qemuMigrationCookieAddNetwork
-> virNetDevOpenvswitchGetMigrateData for per-nic
-> run 'ovs-vsctl --if-exists get Interface vnetx external_ids:Port'
(about 25ms)
In our case, there's no portData available and it seems there is no need to run
the cmd.
Questions:
1. Is it necessary to get/set per-port data in migration finish phase? It will
increase the downtime.
2. Is there any way (i.e. a switch) to not run the OVS cmd if there's no
portData available?
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