** Changed in: nova
Status: Fix Committed => Fix Released
** Changed in: nova
Milestone: None => liberty-3
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https://bugs.launchpad.net/bugs/1381425
Title:
nova cells, force-delete VM throws error even if VM gets deleted
Status in OpenStack Compute (nova):
Fix Released
Bug description:
In nova cells environment, when try to force-delete an instance which is in
'active' state, the instance gets deleted successfully, but in nova-cells
service in compute cell (n-cell-child), it throws the following error:
InvalidRequestError: Object '<Instance at 0x7fc5fcf581d0>' is already
attached to session '75' (this is '79')
Reproduction steps:
1) Create instance.
2) Wait until instance becomes 'active'.
3) Try to force-delete the instance.
$ nova force-delete <instance_id>
Found this error in nova-cells service in compute cell (n-cell-child
service):
2014-10-15 01:59:36.742 ERROR nova.cells.messaging
[req-7c1615ad-491d-4af8-88d7-ff83563ef429 admin admin] Error processing message
locally: Object '<Ins
tance at 0x7fc5fcf581d0>' is already attached to session '75' (this is '79')
2014-10-15 01:59:36.742 TRACE nova.cells.messaging Traceback (most recent
call last):
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/cells/messaging.py", line 199, in _process_locally
2014-10-15 01:59:36.742 TRACE nova.cells.messaging resp_value =
self.msg_runner._process_message_locally(self)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/cells/messaging.py", line 1293, in
_process_message_locally
2014-10-15 01:59:36.742 TRACE nova.cells.messaging return fn(message,
**message.method_kwargs)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/cells/messaging.py", line 698, in run_compute_api_method
2014-10-15 01:59:36.742 TRACE nova.cells.messaging return
fn(message.ctxt, *args, **method_info['method_kwargs'])
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/compute/api.py", line 219, in wrapped
2014-10-15 01:59:36.742 TRACE nova.cells.messaging return func(self,
context, target, *args, **kwargs)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/compute/api.py", line 209, in inner
2014-10-15 01:59:36.742 TRACE nova.cells.messaging return function(self,
context, instance, *args, **kwargs)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/compute/api.py", line 190, in inner
2014-10-15 01:59:36.742 TRACE nova.cells.messaging return f(self,
context, instance, *args, **kw)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/compute/api.py", line 1836, in force_delete
2014-10-15 01:59:36.742 TRACE nova.cells.messaging
self._delete_instance(context, instance)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/compute/api.py", line 1790, in _delete_instance2014-10-15
01:59:36.742 TRACE nova.cells.messaging task_state=task_states.DELETING)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/compute/api.py", line 1622, in _delete
2014-10-15 01:59:36.742 TRACE nova.cells.messaging quotas.rollback()
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/usr/local/lib/python2.7/dist-packages/oslo/utils/excutils.py", line 82, in
__exit__
2014-10-15 01:59:36.742 TRACE nova.cells.messaging
six.reraise(self.type_, self.value, self.tb)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/compute/api.py", line 1550, in _delete
2014-10-15 01:59:36.742 TRACE nova.cells.messaging instance.save()
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/opt/stack/nova/nova/db/sqlalchemy/models.py", line 52, in save
2014-10-15 01:59:36.742 TRACE nova.cells.messaging super(NovaBase,
self).save(session=session)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/usr/local/lib/python2.7/dist-packages/oslo/db/sqlalchemy/models.py", line 47,
in save
2014-10-15 01:59:36.742 TRACE nova.cells.messaging session.add(self)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1399, in add
2014-10-15 01:59:36.742 TRACE nova.cells.messaging
self._save_or_update_state(state)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1411, in
_save_or_update_state
2014-10-15 01:59:36.742 TRACE nova.cells.messaging
self._save_or_update_impl(state)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1667, in
_save_or_update_impl
2014-10-15 01:59:36.742 TRACE nova.cells.messaging
self._update_impl(state)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1661, in
_update_impl
2014-10-15 01:59:36.742 TRACE nova.cells.messaging self._attach(state)
2014-10-15 01:59:36.742 TRACE nova.cells.messaging File
"/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1749, in
_attach
2014-10-15 01:59:36.742 TRACE nova.cells.messaging state.session_id,
self.hash_key))
2014-10-15 01:59:36.742 TRACE nova.cells.messaging InvalidRequestError:
Object '<Instance at 0x7fc5fcf581d0>' is already attached to session '75' (this
is '79')
Note: This issue occurs intermitently.
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