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[Akihiro Motoki <1242338@xxxxxxxxxxxxxxxxxx>]

The point related to UX perspective (is it reasonable to allow deleting
a VIP with members) is filed as bug 1296419.

I confirmed Horizon does not return Internal server error even when
deleting a VIP with members and the VIP is successfully deleted. I mark
this bug Invalid in Horizon.

** Changed in: horizon
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1242338

Title:
  Trying to remove a load balancer pool (which contains members) via
  horizon ends with error

Status in OpenStack Dashboard (Horizon):
  Invalid
Status in OpenStack Neutron (virtual network service):
  Fix Released

Bug description:
  I've tried to remove a pool that has 2 members and a health monitor, operation failed with the following popup:
  "Error: Unable to delete pool. 409-{u'NeutronError': {u'message': u'Pool f5004d04-4461-4a9a-aa7c-04a9bdfde974 is still in use', u'type': u'PoolInUse', u'detail': u''}}"

  I did expect this operation to fail, I just didn't expect it to be
  available in horizon while the pool still has other objects associated
  with it and I didn't expect it to leave the pool in "PENDING_DELETE"
  status.

  The exception from the log file:

  2013-10-20 16:12:13.564 22804 ERROR neutron.services.loadbalancer.drivers.haproxy.agent_manager [-] Unable to destroy device for pool: f5004d04-4461-4a9a-aa7c-04a9bdfde974
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager Traceback (most recent call last):
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager   File "/usr/lib/python2.6/site-packages/neutron/services/loadbalancer/drivers/haproxy/agent_manager.py", line 244, in destroy_device
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager     self.driver.destroy(pool_id)
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager   File "/usr/lib/python2.6/site-packages/neutron/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 92, in destroy
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager     ns.garbage_collect_namespace()
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager   File "/usr/lib/python2.6/site-packages/neutron/agent/linux/ip_lib.py", line 141, in garbage_collect_namespace
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager     self.netns.delete(self.namespace)
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager   File "/usr/lib/python2.6/site-packages/neutron/agent/linux/ip_lib.py", line 440, in delete
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager     self._as_root('delete', name, use_root_namespace=True)
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager   File "/usr/lib/python2.6/site-packages/neutron/agent/linux/ip_lib.py", line 206, in _as_root
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager     kwargs.get('use_root_namespace', False))
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager   File "/usr/lib/python2.6/site-packages/neutron/agent/linux/ip_lib.py", line 65, in _as_root
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager     namespace)
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager   File "/usr/lib/python2.6/site-packages/neutron/agent/linux/ip_lib.py", line 76, in _execute
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager     root_helper=root_helper)
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager   File "/usr/lib/python2.6/site-packages/neutron/agent/linux/utils.py", line 61, in execute
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager     raise RuntimeError(m)
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager RuntimeError: 
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'delete', 'qlbaas-f5004d04-4461-4a9a-aa7c-04a9bdfde974']
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager Exit code: 255
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager Stdout: ''
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager Stderr: 'Cannot remove /var/run/netns/qlbaas-f5004d04-4461-4a9a-aa7c-04a9bdfde974: Device or resource busy\n'
  2013-10-20 16:12:13.564 22804 TRACE neutron.services.loadbalancer.drivers.haproxy.agent_manager

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