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 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to nova in Ubuntu. https://bugs.launchpad.net/bugs/1244694 Title: Creating snapshot fails due to nonexistent temporary directory To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1244694/+subscriptions 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