Nova raises exception about existing libvirt filter

[Vitalii]

Sometimes, when I start instance, nova raises exception, that
filter like nova-instance-instance-0000000b-52540039740a already exists.

So I have to execute `virsh nwfilter-undefine` and try to boot instance again:

In libvirt logs I can see the following:

2014-10-22 12:20:13.816+0000: 4693: error : virNWFilterObjAssignDef:3068 : operation failed: filter 'nova-instance-instance-0000000b-52540039740a' already exists with uuid af47118d-1934-4ca7-8a71-c6ae9a6499aa
2014-10-22 12:20:13.930+0000: 4688: error : virNetSocketReadWire:1523 : End of file while reading data: Input/output error

I use libvirt 1.2.8-3 ( Debian )

I have the following services defined:

service_plugins = neutron.services.l3_router.l3_router_plugin.L3RouterPlugin,neutron.services.firewall.fwaas_plugin.FirewallPlugin

I use Icehouse.

[Numan Siddique (numansiddique)]

Why do you think its a neutron bug?

[Vitalii (vb-d)]

I think this is neutron bug, since Firewall is a neutron plugin. And it is firewall that adds those filters.

[Cristian Klein (cristiklein)]

It seems that this bug is caused by a more strict behaviour on libvirt's side. libvirt developers recommend fixing OpenStack.

https://www.redhat.com/archives/libvir-list/2014-December/msg00158.html

[Eugene Nikanorov (enikanorov)]

Neutron firewall plugin has nothing to do with filters under discussion

[Davanum Srinivas (DIMS) (dims-v)]

Looks like this was already fixed?

https://review.openstack.org/#/c/122721/1

[Armando Migliaccio (armando-migliaccio)]

This bug is > 365 days without activity. We are unsetting assignee and milestone and setting status to Incomplete in order to allow its expiry in 60 days.

If the bug is still valid, then update the bug status.