[Bug 1244694] Re: Creating snapshot fails due to nonexistent temporary directory

Sun Nov 3 15:47:56 UTC 2013

I'm having the same problem - I had a working Havana setup (with
Ceph/rbd as the cinder storage) and within the last few days, whammo,
this starts occuring. I had updated ubuntu 13.10 patches across parts of
the cluster.

nova-compute log from the node with the exception below

2013-11-03 08:37:03.487 1796 ERROR nova.openstack.common.rpc.amqp [req-16923a1f-cf2b-43fb-bf81-3cdceb698fb0 f2b1d092d8144d\
17aa1c51eecfd067bb 305f4fa9adcc48b09b8d07df5b247df7] Exception during message handling
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp Traceback (most recent call last):
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/openstack/\
common/rpc/amqp.py", line 461, in _process_data
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     **args)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/openstack/\
common/rpc/dispatcher.py", line 172, in dispatch
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     result = getattr(proxyobj, method)(ctxt, **kwargs)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 353, in decorated_function
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     return function(self, context, *args, **kwargs)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/exception.\
py", line 90, in wrapped
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     payload)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/exception.\
py", line 73, in wrapped
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     return f(self, context, *args, **kw)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 243, in decorated_function
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     pass
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 229, in decorated_function
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     return function(self, context, *args, **kwargs)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 271, in decorated_function
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     e, sys.exc_info())
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 258, in decorated_function
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     return function(self, context, *args, **kwargs)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 319, in decorated_function
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     % image_id, instance=instance)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 309, in decorated_function
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     *args, **kwargs)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 2293, in snapshot_instance
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     task_states.IMAGE_SNAPSHOT)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/compute/ma\
nager.py", line 2324, in _snapshot_instance
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     update_task_state)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/virt/libvi\
rt/driver.py", line 1397, in snapshot
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     image_format)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/nova/virt/libvi\
rt/driver.py", line 1483, in _live_snapshot
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     libvirt.VIR_DOMAIN_BLOCK_REBASE_SHALLOW)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.\
py", line 179, in doit
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     result = proxy_call(self._autowrap, f, *args, **kwar\
gs)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.\
py", line 139, in proxy_call
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     rv = execute(f,*args,**kwargs)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.\
py", line 77, in tworker
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     rv = meth(*args,**kwargs)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.7/dist-packages/libvirt.py", li\
ne 646, in blockRebase
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp     if ret == -1: raise libvirtError ('virDomainBlockReb\
ase() failed', dom=self)
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp libvirtError: internal error: unable to execute QEMU com\
mand 'drive-mirror': Could not open '/var/lib/nova/instances/snapshots/tmpxjLiuV/e86ce8b372f14540baa109c5cda07f62.delta'
2013-11-03 08:37:03.487 1796 TRACE nova.openstack.common.rpc.amqp

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Title:
  Creating snapshot fails due to nonexistent temporary directory

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