yahoo-eng-team team mailing list archive

[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => grizzly-3

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1101229

Title:
  xenapi: error on volume detach StorageError: Unable to find SR from
  VBD

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  Steps to reproduce:

  . devstack/openrc admin
  nova boot --flavor=m1.small --image=$IMAGEID testmachine
  cinder create 1
  nova volume-attach $INSTANCEID $VOLUMEID /dev/xvdb
  nova volume-detach $INSTANCEID $VOLUMEID

  Stacktrace on n-cpu:

  AUDIT nova.compute.manager [req-27df4d59-8b96-432d-9c61-559e3311c05e admin demo] [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] Detach volume 3cbb15ba-a918-4240-be65-6444baf526f2 from mountpoint /dev/xvdb
  ERROR nova.virt.xenapi.volume_utils [req-27df4d59-8b96-432d-9c61-559e3311c05e admin demo] ['HANDLE_INVALID', 'VBD', 'OpaqueRef:202022d2-babd-a1f6-afd8-b79389b761cf']
  TRACE nova.virt.xenapi.volume_utils Traceback (most recent call last):
  TRACE nova.virt.xenapi.volume_utils File "/opt/stack/nova/nova/virt/xenapi/volume_utils.py", line 173, in find_sr_from_vbd
  TRACE nova.virt.xenapi.volume_utils vdi_ref = session.call_xenapi("VBD.get_VDI", vbd_ref)
  TRACE nova.virt.xenapi.volume_utils File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 709, in call_xenapi
  TRACE nova.virt.xenapi.volume_utils return session.xenapi_request(method, args)
  TRACE nova.virt.xenapi.volume_utils File "/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 133, in xenapi_request
  TRACE nova.virt.xenapi.volume_utils result = _parse_result(getattr(self, methodname)(*full_params))
  TRACE nova.virt.xenapi.volume_utils File "/usr/local/lib/python2.7/dist-packages/XenAPI.py", line 203, in _parse_result
  TRACE nova.virt.xenapi.volume_utils raise Failure(result['ErrorDescription'])
  TRACE nova.virt.xenapi.volume_utils Failure: ['HANDLE_INVALID', 'VBD', 'OpaqueRef:202022d2-babd-a1f6-afd8-b79389b761cf']
  TRACE nova.virt.xenapi.volume_utils
  ERROR nova.virt.xenapi.volumeops [req-27df4d59-8b96-432d-9c61-559e3311c05e admin demo] Unable to find SR from VBD OpaqueRef:202022d2-babd-a1f6-afd8-b79389b761cf
  TRACE nova.virt.xenapi.volumeops Traceback (most recent call last):
  TRACE nova.virt.xenapi.volumeops File "/opt/stack/nova/nova/virt/xenapi/volumeops.py", line 146, in detach_volume
  TRACE nova.virt.xenapi.volumeops sr_ref = volume_utils.find_sr_from_vbd(self._session, vbd_ref)
  TRACE nova.virt.xenapi.volumeops File "/opt/stack/nova/nova/virt/xenapi/volume_utils.py", line 177, in find_sr_from_vbd
  TRACE nova.virt.xenapi.volumeops raise StorageError(_('Unable to find SR from VBD %s') % vbd_ref)
  TRACE nova.virt.xenapi.volumeops StorageError: Unable to find SR from VBD OpaqueRef:202022d2-babd-a1f6-afd8-b79389b761cf
  TRACE nova.virt.xenapi.volumeops
  ERROR nova.compute.manager [req-27df4d59-8b96-432d-9c61-559e3311c05e admin demo] [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] Faild to detach volume 3cbb15ba-a918-4240-be65-6444baf526f2 from /dev/xvdb
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] Traceback (most recent call last):
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] File "/opt/stack/nova/nova/compute/manager.py", line 2558, in _detach_volume
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] mp)
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 370, in detach_volume
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] mountpoint)
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] File "/opt/stack/nova/nova/virt/xenapi/volumeops.py", line 150, in detach_volume
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] raise Exception(_('Error purging SR %s') % sr_ref)
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4] UnboundLocalError: local variable 'sr_ref' referenced before assignment
  TRACE nova.compute.manager [instance: 3679b9d8-c8ea-4ddc-a13f-a5d0d630d6f4]
  ERROR nova.openstack.common.rpc.amqp [req-27df4d59-8b96-432d-9c61-559e3311c05e admin demo] Exception during message handling
  TRACE nova.openstack.common.rpc.amqp Traceback (most recent call last):
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/openstack/common/rpc/amqp.py", line 276, in _process_data
  TRACE nova.openstack.common.rpc.amqp rval = self.proxy.dispatch(ctxt, version, method, **args)
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/openstack/common/rpc/dispatcher.py", line 133, in dispatch
  TRACE nova.openstack.common.rpc.amqp return getattr(proxyobj, method)(ctxt, **kwargs)
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/exception.py", line 110, in wrapped
  TRACE nova.openstack.common.rpc.amqp temp_level, payload)
  TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
  TRACE nova.openstack.common.rpc.amqp self.gen.next()
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/exception.py", line 89, in wrapped
  TRACE nova.openstack.common.rpc.amqp return f(self, context, *args, **kw)
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/compute/manager.py", line 206, in decorated_function
  TRACE nova.openstack.common.rpc.amqp pass
  TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
  TRACE nova.openstack.common.rpc.amqp self.gen.next()
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/compute/manager.py", line 192, in decorated_function
  TRACE nova.openstack.common.rpc.amqp return function(self, context, *args, **kwargs)
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/compute/manager.py", line 233, in decorated_function
  TRACE nova.openstack.common.rpc.amqp kwargs['instance'], e, sys.exc_info())
  TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
  TRACE nova.openstack.common.rpc.amqp self.gen.next()
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/compute/manager.py", line 221, in decorated_function
  TRACE nova.openstack.common.rpc.amqp return function(self, context, *args, **kwargs)
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/compute/manager.py", line 2593, in detach_volume
  TRACE nova.openstack.common.rpc.amqp self._detach_volume(context, instance, bdm)
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/compute/manager.py", line 2565, in _detach_volume
  TRACE nova.openstack.common.rpc.amqp self.volume_api.roll_detaching(context, volume)
  TRACE nova.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
  TRACE nova.openstack.common.rpc.amqp self.gen.next()
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/compute/manager.py", line 2558, in _detach_volume
  TRACE nova.openstack.common.rpc.amqp mp)
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/virt/xenapi/driver.py", line 370, in detach_volume
  TRACE nova.openstack.common.rpc.amqp mountpoint)
  TRACE nova.openstack.common.rpc.amqp File "/opt/stack/nova/nova/virt/xenapi/volumeops.py", line 150, in detach_volume
  TRACE nova.openstack.common.rpc.amqp raise Exception(_('Error purging SR %s') % sr_ref)
  TRACE nova.openstack.common.rpc.amqp UnboundLocalError: local variable 'sr_ref' referenced before assignment
  TRACE nova.openstack.common.rpc.amqp

  So 2 problems:
  - One for the volume detach error
  - One for the UnboundLocalError

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1101229/+subscriptions