Deleting a load balancer intermittently fails - PortNotFoundClient

[Michael Johnson]

Over the last few days something changed in Octavia that is causing intermittent failures when deleting a load balancer. Min first reported it and I was able to reproduce the problem.

Steps to reproduce:
1. Fresh devstack host with octavia from master
2. Create a load balancer (no need for listener)
3. Wait for ACTIVE
4. Delete the load balancer
5. Wait for the lb to be deleted
6. Create another load balancer
7. Wait for ACTIVE
5. Delete load balancer
6. Note failure in o-cw log

[Michael Johnson (johnsom)]

Suspect patch: https://review.openstack.org/#/c/259391
Need to confirm

[Michael Johnson (johnsom)]

Maybe not. I commented the line out and still got a failure.

[Michael Johnson (johnsom)]

I cannot reproduce the problem at commit ed755fc7eb1234738e5d941833a1ee3931eb7093 - Merge "Make sample web server close connections"

[Michael Johnson (johnsom)]

Fails with commit 2d87bdbf1719a02b523523a324926e1e33f516ad

[Michael Johnson (johnsom)]

Ok. I don't think this issue is related to recent octavia patchsets.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/278856

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/278856
Committed: https://git.openstack.org/cgit/openstack/octavia/commit/?id=3cb47387044dbdde5cfe5f7cc33005509b977456
Submitter: Jenkins
Branch: master

commit 3cb47387044dbdde5cfe5f7cc33005509b977456
Author: Michael Johnson <email address hidden>
Date: Thu Feb 11 03:59:12 2016 +0000

    Fixes an intermittent load balancer delete failure

    Intermittently deleting a load balancer would lead to an
    PortNotFoundClient exception that would make DeallocateVip
    revert. This patch fixes an except statement that was catching
    the wrong exception.

    Change-Id: Ia752ee7a1be339533e478d1646ad215e1c7507d4
    Closes-Bug: #1544375