That’s nice Sunil, can you send the patch for review on gerrit?

May be it’s also interesting to avoid sending a notify_routers_updated when 
there are
no router_ids.


Miguel Ángel Ajo


On Sunday, 11 de January de 2015 at 08:42, Sunil Kumar wrote:

> This trivial patch fixes the tracebacks:
>  
> $ cat disassociate_floating_ips.patch  
> --- neutron/db/l3_db.py.orig    2015-01-10 22:20:30.101506298 -0800
> +++ neutron/db/l3_db.py 2015-01-10 22:24:18.111479818 -0800
> @@ -1257,4 +1257,4 @@
>   
>      def notify_routers_updated(self, context, router_ids):
>          super(L3_NAT_db_mixin, self).notify_routers_updated(
> -            context, list(router_ids), 'disassociate_floatingips', {})
> +            context, list(router_ids) if router_ids else None, 
> 'disassociate_floatingips', {})
>  
>  
> -Sunil
> From: Sunil Kumar [su...@embrane.com (mailto:su...@embrane.com)]
> Sent: Saturday, January 10, 2015 7:07 PM
> To: OpenStack Development Mailing List (not for usage questions)
> Subject: [openstack-dev] [Neutron][L3][Devstack] Bug during delete floating 
> IPs?
>  
> Not sure if its something seen by others. I hit this when I run 
> tempest.scenario.test_network_basic_ops.TestNetworkBasicOps against master:
>  
> 2015-01-10 17:45:13.227 5350 DEBUG neutron.plugins.ml2.plugin 
> [req-2ab4b380-cf3a-4663-90c3-a05ef5f4da0f None] Deleting port 
> e5deb014-0063-4d55-8ee3-5ba3524fee14 delete_port 
> /opt/stack/new/neutron/neutron/plugins/ml2/plugin.py:995
> 2015-01-10 17:45:13.228 5350 DEBUG neutron.openstack.common.lockutils 
> [req-2ab4b380-cf3a-4663-90c3-a05ef5f4da0f ] Created new semaphore "db-access" 
> internal_lock /opt/stack/new/neutron/neutron/openstack/common/lockutils.py:206
> 2015-01-10 17:45:13.228 5350 DEBUG neutron.openstack.common.lockutils 
> [req-2ab4b380-cf3a-4663-90c3-a05ef5f4da0f ] Acquired semaphore "db-access" 
> lock /opt/stack/new/neutron/neutron/openstack/common/lockutils.py:229
> 2015-01-10 17:45:13.252 5350 DEBUG neutron.plugins.ml2.plugin 
> [req-2ab4b380-cf3a-4663-90c3-a05ef5f4da0f None] Calling delete_port for 
> e5deb014-0063-4d55-8ee3-5ba3524fee14 owned by network:floatingip delete_port 
> /opt/stack/new/neutron/neutron/plugins/ml2/plugin.py:1043
> 2015-01-10 17:45:13.254 5350 DEBUG neutron.openstack.common.lockutils 
> [req-2ab4b380-cf3a-4663-90c3-a05ef5f4da0f ] Releasing semaphore "db-access" 
> lock /opt/stack/new/neutron/neutron/openstack/common/lockutils.py:238
> 2015-01-10 17:45:13.282 5350 ERROR neutron.api.v2.resource 
> [req-2ab4b380-cf3a-4663-90c3-a05ef5f4da0f None] delete failed
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource Traceback (most 
> recent call last):
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource   File 
> "/opt/stack/new/neutron/neutron/api/v2/resource.py", line 83, in resource
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource     result = 
> method(request=request, **args)
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource   File 
> "/opt/stack/new/neutron/neutron/api/v2/base.py", line 479, in delete
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource     
> obj_deleter(request.context, id, **kwargs)
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource   File 
> "/opt/stack/new/neutron/neutron/db/l3_dvr_db.py", line 198, in 
> delete_floatingip
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource     
> self).delete_floatingip(context, id)
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource   File 
> "/opt/stack/new/neutron/neutron/db/l3_db.py", line 1237, in delete_floatingip
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource     router_id = 
> self._delete_floatingip(context, id)
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource   File 
> "/opt/stack/new/neutron/neutron/db/l3_db.py", line 902, in _delete_floatingip
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource     
> l3_port_check=False)
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource   File 
> "/opt/stack/new/neutron/neutron/plugins/ml2/plugin.py", line 1050, in 
> delete_port
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource     
> l3plugin.notify_routers_updated(context, router_ids)
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource   File 
> "/opt/stack/new/neutron/neutron/db/l3_db.py", line 1260, in 
> notify_routers_updated
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource     context, 
> list(router_ids), 'disassociate_floatingips', {})
> 2015-01-10 17:45:13.282 5350 TRACE neutron.api.v2.resource TypeError: 
> 'NoneType' object is not iterable
>  
> Looks like the code is assuming that router_ids can never be None, which 
> clearly is the case here. Is that a bug?
>  
> Looking elsewhere in the l3_db.py, 
> L3RpcNotifierMixin.notify_routers_updated() does make a check for router_ids 
> (which means that that function does expect it to be empty some times), but 
> the list() is killing it before it reaches that.
>  
> This backtrace repeats itself many many times in the neutron logs.
>  
> Thanks for your help.
> -Sunil
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