Public bug reported: It appears that using the utils.is_neutron() function can create race conditions, if not used carefully. Review #56381 was attempting to check the presence of Neutron, in order to determine if hairpinning should be enabled on the bridge that Nova creates. Only after creating a new configuration flag in Nova.conf and checking the setting, were the unit tests passing and the race condition resolved.
My hunch is that the global variable that utils.is_neutron( ) creates is the root cause of the issue. https://review.openstack.org/#/c/56381/ ** Affects: nova Importance: Undecided Status: New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1274992 Title: Utils.is_neutron can create race conditions Status in OpenStack Compute (Nova): New Bug description: It appears that using the utils.is_neutron() function can create race conditions, if not used carefully. Review #56381 was attempting to check the presence of Neutron, in order to determine if hairpinning should be enabled on the bridge that Nova creates. Only after creating a new configuration flag in Nova.conf and checking the setting, were the unit tests passing and the race condition resolved. My hunch is that the global variable that utils.is_neutron( ) creates is the root cause of the issue. https://review.openstack.org/#/c/56381/ To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1274992/+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
