Reviewed: https://review.opendev.org/c/openstack/os-vif/+/798055 Committed: https://opendev.org/openstack/os-vif/commit/b837c1a74f37191692a820711e431a75516a4abf Submitter: "Zuul (22348)" Branch: master
commit b837c1a74f37191692a820711e431a75516a4abf Author: Sean Mooney <[email protected]> Date: Fri Jun 25 07:50:26 2021 +0000 add configurable per port bridges This patch add a new configuration option to use per port bridge when hybrid_plug is false. This can be used with OVN to reduce packet loss during a live migration. OVN can only install openflow rules when a port both has external_ids set and an ofport-id assigned. Since the ofport-id is only assigned when a netdev matching the port name exists connected to the dataplane, OVN cannot install the flows until libvirt create the tap on the destination host during a live migration. On loaded systems this can result in multiple seconds of packet loss. To address this we introduce per port bridges which are connencted to the integration brige by a patch port pair. Since the patch port will exist on the dataplane during pre live migration OVN can install the flows on the integration bridge before we begin the migration reducing or avoiding packet loss. Change-Id: I0d55ccbef5b585330b5512e67e442b80304a2e73 Depends-On: https://review.opendev.org/c/openstack/nova/+/797428 Closes-Bug: #1933517 ** Changed in: os-vif Status: In Progress => Fix Released -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to neutron. https://bugs.launchpad.net/bugs/1933517 Title: [RFE][OVN] Create an intermediate OVS bridge between VM and intergration bridge to improve the live-migration process Status in neutron: Triaged Status in os-vif: Fix Released Bug description: When live migrating network sensitive VMs, the communication is broken. This is similar to [1] but in OVN the vif-plugged events are directly controller by the Neutron server, not by the OVS/DHCP agents. The problem lies in when the destination chassis creates the needed OF rules for the destination VM port. Same as in OVS, the VM port is created when the instance is unpaused. At this moment the VM continues sending packets through the interface but OVN didn't finish the configuration. Related BZs: - OSP16.1: https://bugzilla.redhat.com/show_bug.cgi?id=1903653 - OSP16.1: https://bugzilla.redhat.com/show_bug.cgi?id=1872937 - OSP16.1: https://bugzilla.redhat.com/show_bug.cgi?id=1966512 [1]https://bugs.launchpad.net/neutron/+bug/1901707 To manage notifications about this bug go to: https://bugs.launchpad.net/neutron/+bug/1933517/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
