When ovn-controller is restarted, the ovn-controller process is stopped and then started again. When the process is stopped, the process cleans itself up by removing all traces of itself from the central southbound database and the OVS database on the hypervisor. The issue with this is that this removes tunnels, meaning that traffic from other hypervisors in the cluster is unable to reach the local hypervisor. When restarting, it would be better to not clean up, thus allowing for uninterrupted traffic flow.
This patchset allows for ovn-controller to be stopped without cleaning itself up. This way, during a restart, traffic can still flow freely while ovn-controller is down. Mark Michelson (2): ovn: Add '--restart' flag to ovn-controller exit. ovn: Modify restart_controller in ovn-ctl to use --restart ovn/controller/ovn-controller.c | 92 +++++++++++--------- ovn/utilities/ovn-ctl | 4 +- tests/ovn.at | 186 ++++++++++++++++++++++++++++++++++++++++ utilities/ovs-lib.in | 2 +- 4 files changed, 241 insertions(+), 43 deletions(-) -- 2.14.4 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
