[Yahoo-eng-team] [Bug 1607670] Re: Cannot remove subnet from router even though the router is not used by vpnservice

2017-04-17 Thread OpenStack Infra 
Reviewed:  https://review.openstack.org/348835
Committed: 
https://git.openstack.org/cgit/openstack/neutron-vpnaas/commit/?id=8a565c03683814044be79dd94f768b97412a6285
Submitter: Jenkins
Branch:master

commit 8a565c03683814044be79dd94f768b97412a6285
Author: hobo.kengo 
Date:   Fri Jul 29 19:27:07 2016 +0900

Add router_id to query when check subnet is used by vpnservice

Callback tries to find vpnservice with subnet_id.
However, it should be located with subnet_id and router_id
because router that is not used by vpnservice may be in same subnet.

Change-Id: I303d54328f41a8c53b5c4baf7ee0cecb43425a7d
Closes-Bug: #1607670


** Changed in: neutron
   Status: In Progress => Fix Released

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Title:
  Cannot remove subnet from router even though the router is not used by
  vpnservice

Status in neutron:
  Fix Released

Bug description:
  Cannot remove subnet from router even though the router is not used by
  vpnservice.

  When operation for router interface is requested,
  callback method(vpn_callback) in vpn_db.py is called.
  Callback tries to find vpnservice with subnet_id.
  However, it should be located with subnet_id and router_id
  because router that is not used by vpnservice may be in same subnet. 

  ===Reproduction===
  1.Creating vpnservice specifying router1 and subnet1.

  neutron router-create router1
  neutron net-create network1
  neutron subnet-create network1 10.10.10.0/24 --name subnet1
  neutron router-interface-add router1 subnet1
  neutron router-gateway-set router1 external
  neutron vpn-service-create router1 subnet1

  2.Attach subnet1 to router2(that is not used by vpnservice).
  neutron router-create router2
  neutron port-create network1 --name port1
  neutron router-interface-add router2 port=port1

  3.Remove subnet1 from router2 (that is not used by vpnservice).
  vagrant@ubuntu:/opt/stack/neutron-vpnaas$ neutron router-interface-delete b 
port=dc71de4a-3ee7-407f-9fab-06be99b56bbe
  Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6
  Neutron server returns request_ids: 
['req-e16aae3f-2610-473d-aeee-52587c78df40']

  
  =trace in neutron server==
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Error during notification for 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback router_interface, before_delete
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager Traceback (most 
recent call last):
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 148, in _notify_loop
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
callback(resource, event, trigger, **kwargs)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 722, in 
vpn_callback
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
check_func(context, resource_id)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 549, in 
check_subnet_in_use
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
vpnservice_id=vpnservices['id'])
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
SubnetInUseByVPNService: Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by 
VPNService 73a06d81-85d5-47e8-8f08-e04802b167a6
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager
  2016-07-29 16:46:42.606 27256 DEBUG neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Notify callbacks for router_interface, 
abort_delete _notify_loop /opt/stack/neutron/neutron/callbacks/manager.py:140
  2016-07-29 16:46:42.610 27256 ERROR root 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Original exception being dropped: 
['Traceback (most recent call last):\n', '  File 
"/opt/stack/neutron/neutron/db/l3_db.py", line 815, in 
_confirm_router_interface_not_in_use\nevents.BEFORE_DELETE, self, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/callbacks/registry.py", line 
44, in notify\n_get_callback_manager().notify(resource, event, trigger, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/db/api.py", line 70, in 
wrapped\nraise db_exc.RetryRequest(e)\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in 
__exit__\nself.force_reraise()\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line

[Yahoo-eng-team] [Bug 1607670] Re: Cannot remove subnet from router even though the router is not used by vpnservice

2017-03-01 Thread OpenStack Infra 
** Changed in: neutron
   Status: Won't Fix => In Progress

** Changed in: neutron
 Assignee: Kengo Hobo (hobo-kengo) => YAMAMOTO Takashi (yamamoto)

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https://bugs.launchpad.net/bugs/1607670

Title:
  Cannot remove subnet from router even though the router is not used by
  vpnservice

Status in neutron:
  In Progress

Bug description:
  Cannot remove subnet from router even though the router is not used by
  vpnservice.

  When operation for router interface is requested,
  callback method(vpn_callback) in vpn_db.py is called.
  Callback tries to find vpnservice with subnet_id.
  However, it should be located with subnet_id and router_id
  because router that is not used by vpnservice may be in same subnet. 

  ===Reproduction===
  1.Creating vpnservice specifying router1 and subnet1.

  neutron router-create router1
  neutron net-create network1
  neutron subnet-create network1 10.10.10.0/24 --name subnet1
  neutron router-interface-add router1 subnet1
  neutron router-gateway-set router1 external
  neutron vpn-service-create router1 subnet1

  2.Attach subnet1 to router2(that is not used by vpnservice).
  neutron router-create router2
  neutron port-create network1 --name port1
  neutron router-interface-add router2 port=port1

  3.Remove subnet1 from router2 (that is not used by vpnservice).
  vagrant@ubuntu:/opt/stack/neutron-vpnaas$ neutron router-interface-delete b 
port=dc71de4a-3ee7-407f-9fab-06be99b56bbe
  Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6
  Neutron server returns request_ids: 
['req-e16aae3f-2610-473d-aeee-52587c78df40']

  
  =trace in neutron server==
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Error during notification for 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback router_interface, before_delete
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager Traceback (most 
recent call last):
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 148, in _notify_loop
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
callback(resource, event, trigger, **kwargs)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 722, in 
vpn_callback
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
check_func(context, resource_id)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 549, in 
check_subnet_in_use
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
vpnservice_id=vpnservices['id'])
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
SubnetInUseByVPNService: Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by 
VPNService 73a06d81-85d5-47e8-8f08-e04802b167a6
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager
  2016-07-29 16:46:42.606 27256 DEBUG neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Notify callbacks for router_interface, 
abort_delete _notify_loop /opt/stack/neutron/neutron/callbacks/manager.py:140
  2016-07-29 16:46:42.610 27256 ERROR root 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Original exception being dropped: 
['Traceback (most recent call last):\n', '  File 
"/opt/stack/neutron/neutron/db/l3_db.py", line 815, in 
_confirm_router_interface_not_in_use\nevents.BEFORE_DELETE, self, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/callbacks/registry.py", line 
44, in notify\n_get_callback_manager().notify(resource, event, trigger, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/db/api.py", line 70, in 
wrapped\nraise db_exc.RetryRequest(e)\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in 
__exit__\nself.force_reraise()\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in 
force_reraise\nsix.reraise(self.type_, self.value, self.tb)\n', '  File 
"/opt/stack/neutron/neutron/db/api.py", line 65, in wrapped\nretur
 n f(*args, **kwargs)\n', '  File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 127, in notify\n
raise exceptions.CallbackFailure(errors=errors)\n', 'CallbackFailure: Callback 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback failed with "Subnet 
0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6"\n']
  2016-07-29 16:46:42.611 27256 INFO neutron.api.v2.resource

[Yahoo-eng-team] [Bug 1607670] Re: Cannot remove subnet from router even though the router is not used by vpnservice

2016-11-16 Thread Armando Migliaccio 
http://lists.openstack.org/pipermail/openstack-
dev/2016-November/107384.html

** Changed in: neutron
   Status: In Progress => Won't Fix

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1607670

Title:
  Cannot remove subnet from router even though the router is not used by
  vpnservice

Status in neutron:
  Won't Fix

Bug description:
  Cannot remove subnet from router even though the router is not used by
  vpnservice.

  When operation for router interface is requested,
  callback method(vpn_callback) in vpn_db.py is called.
  Callback tries to find vpnservice with subnet_id.
  However, it should be located with subnet_id and router_id
  because router that is not used by vpnservice may be in same subnet. 

  ===Reproduction===
  1.Creating vpnservice specifying router1 and subnet1.

  neutron router-create router1
  neutron net-create network1
  neutron subnet-create network1 10.10.10.0/24 --name subnet1
  neutron router-interface-add router1 subnet1
  neutron router-gateway-set router1 external
  neutron vpn-service-create router1 subnet1

  2.Attach subnet1 to router2(that is not used by vpnservice).
  neutron router-create router2
  neutron port-create network1 --name port1
  neutron router-interface-add router2 port=port1

  3.Remove subnet1 from router2 (that is not used by vpnservice).
  vagrant@ubuntu:/opt/stack/neutron-vpnaas$ neutron router-interface-delete b 
port=dc71de4a-3ee7-407f-9fab-06be99b56bbe
  Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6
  Neutron server returns request_ids: 
['req-e16aae3f-2610-473d-aeee-52587c78df40']

  
  =trace in neutron server==
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Error during notification for 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback router_interface, before_delete
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager Traceback (most 
recent call last):
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 148, in _notify_loop
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
callback(resource, event, trigger, **kwargs)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 722, in 
vpn_callback
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
check_func(context, resource_id)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 549, in 
check_subnet_in_use
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
vpnservice_id=vpnservices['id'])
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
SubnetInUseByVPNService: Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by 
VPNService 73a06d81-85d5-47e8-8f08-e04802b167a6
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager
  2016-07-29 16:46:42.606 27256 DEBUG neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Notify callbacks for router_interface, 
abort_delete _notify_loop /opt/stack/neutron/neutron/callbacks/manager.py:140
  2016-07-29 16:46:42.610 27256 ERROR root 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Original exception being dropped: 
['Traceback (most recent call last):\n', '  File 
"/opt/stack/neutron/neutron/db/l3_db.py", line 815, in 
_confirm_router_interface_not_in_use\nevents.BEFORE_DELETE, self, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/callbacks/registry.py", line 
44, in notify\n_get_callback_manager().notify(resource, event, trigger, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/db/api.py", line 70, in 
wrapped\nraise db_exc.RetryRequest(e)\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in 
__exit__\nself.force_reraise()\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in 
force_reraise\nsix.reraise(self.type_, self.value, self.tb)\n', '  File 
"/opt/stack/neutron/neutron/db/api.py", line 65, in wrapped\nretur
 n f(*args, **kwargs)\n', '  File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 127, in notify\n
raise exceptions.CallbackFailure(errors=errors)\n', 'CallbackFailure: Callback 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback failed with "Subnet 
0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6"\n']
  2016-07-29 16:46:42.611 27256 INFO neutron.api.v2.resource 
[req-e16aae3f-2610-473d-aeee-52587c78df40

[Yahoo-eng-team] [Bug 1607670] Re: Cannot remove subnet from router even though the router is not used by vpnservice

2016-11-10 Thread Kengo Hobo 
I think the fix haven't released yet.

** Changed in: neutron
   Status: Fix Released => In Progress

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1607670

Title:
  Cannot remove subnet from router even though the router is not used by
  vpnservice

Status in neutron:
  In Progress

Bug description:
  Cannot remove subnet from router even though the router is not used by
  vpnservice.

  When operation for router interface is requested,
  callback method(vpn_callback) in vpn_db.py is called.
  Callback tries to find vpnservice with subnet_id.
  However, it should be located with subnet_id and router_id
  because router that is not used by vpnservice may be in same subnet. 

  ===Reproduction===
  1.Creating vpnservice specifying router1 and subnet1.

  neutron router-create router1
  neutron net-create network1
  neutron subnet-create network1 10.10.10.0/24 --name subnet1
  neutron router-interface-add router1 subnet1
  neutron router-gateway-set router1 external
  neutron vpn-service-create router1 subnet1

  2.Attach subnet1 to router2(that is not used by vpnservice).
  neutron router-create router2
  neutron port-create network1 --name port1
  neutron router-interface-add router2 port=port1

  3.Remove subnet1 from router2 (that is not used by vpnservice).
  vagrant@ubuntu:/opt/stack/neutron-vpnaas$ neutron router-interface-delete b 
port=dc71de4a-3ee7-407f-9fab-06be99b56bbe
  Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6
  Neutron server returns request_ids: 
['req-e16aae3f-2610-473d-aeee-52587c78df40']

  
  =trace in neutron server==
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Error during notification for 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback router_interface, before_delete
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager Traceback (most 
recent call last):
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 148, in _notify_loop
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
callback(resource, event, trigger, **kwargs)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 722, in 
vpn_callback
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
check_func(context, resource_id)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 549, in 
check_subnet_in_use
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
vpnservice_id=vpnservices['id'])
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
SubnetInUseByVPNService: Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by 
VPNService 73a06d81-85d5-47e8-8f08-e04802b167a6
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager
  2016-07-29 16:46:42.606 27256 DEBUG neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Notify callbacks for router_interface, 
abort_delete _notify_loop /opt/stack/neutron/neutron/callbacks/manager.py:140
  2016-07-29 16:46:42.610 27256 ERROR root 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Original exception being dropped: 
['Traceback (most recent call last):\n', '  File 
"/opt/stack/neutron/neutron/db/l3_db.py", line 815, in 
_confirm_router_interface_not_in_use\nevents.BEFORE_DELETE, self, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/callbacks/registry.py", line 
44, in notify\n_get_callback_manager().notify(resource, event, trigger, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/db/api.py", line 70, in 
wrapped\nraise db_exc.RetryRequest(e)\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in 
__exit__\nself.force_reraise()\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in 
force_reraise\nsix.reraise(self.type_, self.value, self.tb)\n', '  File 
"/opt/stack/neutron/neutron/db/api.py", line 65, in wrapped\nretur
 n f(*args, **kwargs)\n', '  File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 127, in notify\n
raise exceptions.CallbackFailure(errors=errors)\n', 'CallbackFailure: Callback 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback failed with "Subnet 
0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6"\n']
  2016-07-29 16:46:42.611 27256 INFO neutron.api.v2.resource 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278

[Yahoo-eng-team] [Bug 1607670] Re: Cannot remove subnet from router even though the router is not used by vpnservice

2016-11-10 Thread Sreekumar S 
** Changed in: neutron
   Status: In Progress => Fix Released

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1607670

Title:
  Cannot remove subnet from router even though the router is not used by
  vpnservice

Status in neutron:
  Fix Released

Bug description:
  Cannot remove subnet from router even though the router is not used by
  vpnservice.

  When operation for router interface is requested,
  callback method(vpn_callback) in vpn_db.py is called.
  Callback tries to find vpnservice with subnet_id.
  However, it should be located with subnet_id and router_id
  because router that is not used by vpnservice may be in same subnet. 

  ===Reproduction===
  1.Creating vpnservice specifying router1 and subnet1.

  neutron router-create router1
  neutron net-create network1
  neutron subnet-create network1 10.10.10.0/24 --name subnet1
  neutron router-interface-add router1 subnet1
  neutron router-gateway-set router1 external
  neutron vpn-service-create router1 subnet1

  2.Attach subnet1 to router2(that is not used by vpnservice).
  neutron router-create router2
  neutron port-create network1 --name port1
  neutron router-interface-add router2 port=port1

  3.Remove subnet1 from router2 (that is not used by vpnservice).
  vagrant@ubuntu:/opt/stack/neutron-vpnaas$ neutron router-interface-delete b 
port=dc71de4a-3ee7-407f-9fab-06be99b56bbe
  Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6
  Neutron server returns request_ids: 
['req-e16aae3f-2610-473d-aeee-52587c78df40']

  
  =trace in neutron server==
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Error during notification for 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback router_interface, before_delete
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager Traceback (most 
recent call last):
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 148, in _notify_loop
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
callback(resource, event, trigger, **kwargs)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 722, in 
vpn_callback
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
check_func(context, resource_id)
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager   File 
"/opt/stack/neutron-vpnaas/neutron_vpnaas/db/vpn/vpn_db.py", line 549, in 
check_subnet_in_use
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
vpnservice_id=vpnservices['id'])
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager 
SubnetInUseByVPNService: Subnet 0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by 
VPNService 73a06d81-85d5-47e8-8f08-e04802b167a6
  2016-07-29 16:46:42.597 27256 ERROR neutron.callbacks.manager
  2016-07-29 16:46:42.606 27256 DEBUG neutron.callbacks.manager 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Notify callbacks for router_interface, 
abort_delete _notify_loop /opt/stack/neutron/neutron/callbacks/manager.py:140
  2016-07-29 16:46:42.610 27256 ERROR root 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -] Original exception being dropped: 
['Traceback (most recent call last):\n', '  File 
"/opt/stack/neutron/neutron/db/l3_db.py", line 815, in 
_confirm_router_interface_not_in_use\nevents.BEFORE_DELETE, self, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/callbacks/registry.py", line 
44, in notify\n_get_callback_manager().notify(resource, event, trigger, 
**kwargs)\n', '  File "/opt/stack/neutron/neutron/db/api.py", line 70, in 
wrapped\nraise db_exc.RetryRequest(e)\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in 
__exit__\nself.force_reraise()\n', '  File 
"/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in 
force_reraise\nsix.reraise(self.type_, self.value, self.tb)\n', '  File 
"/opt/stack/neutron/neutron/db/api.py", line 65, in wrapped\nretur
 n f(*args, **kwargs)\n', '  File 
"/opt/stack/neutron/neutron/callbacks/manager.py", line 127, in notify\n
raise exceptions.CallbackFailure(errors=errors)\n', 'CallbackFailure: Callback 
neutron_vpnaas.db.vpn.vpn_db.vpn_callback failed with "Subnet 
0a0db447-aa35-44aa-a4d1-c72da22bd9e4 is used by VPNService 
73a06d81-85d5-47e8-8f08-e04802b167a6"\n']
  2016-07-29 16:46:42.611 27256 INFO neutron.api.v2.resource 
[req-e16aae3f-2610-473d-aeee-52587c78df40 5cd9727299164d72a308a13b96610278 
d12b219751fe4b71be3df49fddbbafaf - - -]