Could not attach volume during volume exercise

[Adalberto Medeiros]

This bug happened once on the gate when running grenade:

http://logs.openstack.org/32460/1/check/gate-grenade-devstack-vm/9179

Grenade log:
2013-06-20 19:01:11.272 | + nova volume-attach e0f033d0-a02b-41b2-b36a-a68a9bdab15e 1ef56109-6db4-4ca8-8191-4d003c8ae934 /dev/vdb
2013-06-20 19:01:12.091 | ERROR: The supplied device path (/dev/vdb) is in use. (HTTP 409) (Request-ID: req-ab46cc6b-6bcf-4ad2-9867-b4c8e05cd37e)
2013-06-20 19:01:12.111 | + die 164 'Failure attaching volume ex-vol-065760f4 to ex-vol-inst'
2013-06-20 19:01:12.111 | + local exitcode=1
2013-06-20 19:01:12.112 | + set +o xtrace
2013-06-20 19:01:12.114 | [ERROR] /opt/stack/old/devstack/exercises/volumes.sh:164 Failure attaching volume ex-vol-065760f4 to ex-vol-inst

Trace (from n-cpu)
2013-06-20 19:01:12.058 ERROR nova.openstack.common.rpc.amqp [req-ab46cc6b-6bcf-4ad2-9867-b4c8e05cd37e demo demo] Exception during message handling
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp Traceback (most recent call last):
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/openstack/common/rpc/amqp.py", line 430, in _process_data
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp rval = self.proxy.dispatch(ctxt, version, method, **args)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/openstack/common/rpc/dispatcher.py", line 133, in dispatch
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp return getattr(proxyobj, method)(ctxt, **kwargs)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/exception.py", line 117, in wrapped
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp temp_level, payload)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp self.gen.next()
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/exception.py", line 94, in wrapped
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp return f(self, context, *args, **kw)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/compute/manager.py", line 209, in decorated_function
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp pass
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp self.gen.next()
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/compute/manager.py", line 195, in decorated_function
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp return function(self, context, *args, **kwargs)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/compute/manager.py", line 237, in decorated_function
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp e, sys.exc_info())
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp self.gen.next()
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/compute/manager.py", line 224, in decorated_function
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp return function(self, context, *args, **kwargs)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/compute/manager.py", line 2854, in reserve_block_device_name
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp return do_reserve()
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/openstack/common/lockutils.py", line 242, in inner
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp retval = f(*args, **kwargs)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/compute/manager.py", line 2843, in do_reserve
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp context, instance, bdms, device)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp File "/opt/stack/old/nova/nova/compute/utils.py", line 165, in get_device_name_for_instance
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp raise exception.DevicePathInUse(path=device)
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp DevicePathInUse: The supplied device path (/dev/vdb) is in use.
2013-06-20 19:01:12.058 15776 TRACE nova.openstack.common.rpc.amqp

[Sean Dague (sdague)]

This grenade bug was last updated over 180 days ago, as grenade
is a fast moving project and we'd like to get the tracker down to
currently actionable bugs, this is getting marked as Invalid. If the
issue still exists, please feel free to reopen it.