OK. Marking this as confirmed and moving to wishlist, based on the fact that this seems to be more about an enhancement to migration time. If you have a patch feel free to submit it to gerrit and link to this bug in your commit message.
** Changed in: neutron Status: Incomplete => Opinion ** Changed in: neutron Assignee: Sean M. Collins (scollins) => (unassigned) ** Changed in: neutron Status: Opinion => Confirmed ** Changed in: neutron Importance: Undecided => Wishlist -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1541738 Title: Rule on the tun bridge is not updated in time while migrating the vm Status in neutron: Confirmed Bug description: ENV:neutron/master, vxlan After the vm live migration, we can observe that the vm is active using command "nova show". However, the vm network is not ready. When processing vm live migration, nova invokes neutron update_port. It only updates the host ID of the port attribute, but doesn't update the rules on the tun bridge. This means the output port in the rule below is not updated to the vxlan port, which should be connected to the host node that the vm is migrated to. ovs-ofctl dump-flows br-tun | grep 1ef cookie=0x0, duration=194.884s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=194, priority=1,vlan_tci=0x0306/0x0fff,dl_dst=5a:c6:4f:34:61:06 actions=load:0->NXM_OF_VLAN_TCI[],load:0x1ef->NXM_NX_TUN_ID[],output:24 Due to the reason explained above, the time for vm migration is increased. By monitoring the rule status on the tun bridge and the network connectivity, the network connectivity is restored after the rule of tun bridge is updated. Therefore, the time for vm migration can be reduced by updating the rule immediately. To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1541738/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp