yahoo-eng-team team mailing list archive

[Ian Kumlien <1815762@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

While upgrading to rocky, we ended up with a broken openvswitch
infrastructure and moved back to the old openvswitch.

We ended up with new machines working, old machines didn't and it took a
while to realize that we had qvo* interfaces that not only wasn't
plugged but also wasn't owned by ovs-system - basically the virtual
equivalent of forgetting to plug in the cable ;)

This was quickly addressed by running this bash-ism on all nodes:
for x in `ip a |grep qvo |grep @qvb |grep -v ovs-system | awk '{ print $2 '}` ; do y=${x%%"@"*} && ip link delete $y ; done ; docker restart nova_compute

However, nova could pretty easily sanity check this =)

** 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/1815762

Title:
  you can end up in a state where qvo* interfaces aren't owned by ovs
  which results in a dangling connection

Status in OpenStack Compute (nova):
  New

Bug description:
  While upgrading to rocky, we ended up with a broken openvswitch
  infrastructure and moved back to the old openvswitch.

  We ended up with new machines working, old machines didn't and it took
  a while to realize that we had qvo* interfaces that not only wasn't
  plugged but also wasn't owned by ovs-system - basically the virtual
  equivalent of forgetting to plug in the cable ;)

  This was quickly addressed by running this bash-ism on all nodes:
  for x in `ip a |grep qvo |grep @qvb |grep -v ovs-system | awk '{ print $2 '}` ; do y=${x%%"@"*} && ip link delete $y ; done ; docker restart nova_compute

  However, nova could pretty easily sanity check this =)

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1815762/+subscriptions