Public bug reported:
In some cases (not for all instances, just for some) the following error
prevents creating the snapshot:
2013-10-25 14:49:30.724 22980 AUDIT nova.compute.manager
[req-6e9326d7-64df-40f7-bc81-190ec5234de2 657f1aca48d24eaf9655e0b77b2bc6d9
35b2b08cc3f44a538cf3535043793a2a] [instance:
db9c8a72-6ce2-41b7-8f7a-be0be8468667] instance snapshotting
2013-10-25 14:49:30.944 22980 INFO nova.virt.libvirt.driver
[req-6e9326d7-64df-40f7-bc81-190ec5234de2 657f1aca48d24eaf9655e0b77b2bc6d9
35b2b08cc3f44a538cf3535043793a2a] [instance:
db9c8a72-6ce2-41b7-8f7a-be0be8468667] Beginning live snapshot process
2013-10-25 14:49:32.006 22980 INFO nova.virt.libvirt.driver
[req-6e9326d7-64df-40f7-bc81-190ec5234de2 657f1aca48d24eaf9655e0b77b2bc6d9
35b2b08cc3f44a538cf3535043793a2a] [instance:
db9c8a72-6ce2-41b7-8f7a-be0be8468667] Snapshot extracted, beginning image upload
2013-10-25 14:49:32.329 22980 ERROR nova.openstack.common.rpc.amqp
[req-6e9326d7-64df-40f7-bc81-190ec5234de2 657f1aca48d24eaf9655e0b77b2bc6d9
35b2b08cc3f44a538cf3535043793a2a] Exception during message handling
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp Traceback
(most recent call last):
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/amqp.py", line 461,
in _process_data
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp **args)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/openstack/common/rpc/dispatcher.py",
line 172, in dispatch
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp result =
getattr(proxyobj, method)(ctxt, **kwargs)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 353, in
decorated_function
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp return
function(self, context, *args, **kwargs)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 90, in wrapped
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp payload)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 73, in wrapped
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp return
f(self, context, *args, **kw)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 243, in
decorated_function
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp pass
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 229, in
decorated_function
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp return
function(self, context, *args, **kwargs)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 271, in
decorated_function
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp e,
sys.exc_info())
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 258, in
decorated_function
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp return
function(self, context, *args, **kwargs)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 319, in
decorated_function
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp %
image_id, instance=instance)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 309, in
decorated_function
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp *args,
**kwargs)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2293, in
snapshot_instance
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp
task_states.IMAGE_SNAPSHOT)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2324, in
_snapshot_instance
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp
update_task_state)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1397, in
snapshot
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp
image_format)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 1483, in
_live_snapshot
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp
libvirt.VIR_DOMAIN_BLOCK_REBASE_SHALLOW)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 179, in doit
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp result =
proxy_call(self._autowrap, f, *args, **kwargs)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in proxy_call
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp rv =
execute(f,*args,**kwargs)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in tworker
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp rv =
meth(*args,**kwargs)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp File
"/usr/lib/python2.7/dist-packages/libvirt.py", line 646, in blockRebase
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp if ret
== -1: raise libvirtError ('virDomainBlockRebase() failed', dom=self)
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp
libvirtError: internal error: unable to execute QEMU command 'drive-mirror':
Could not open
'/var/lib/nova/instances/snapshots/tmp5DdrIO/236df3e170e64fabaeb3c7601e2d6c47.delta'
2013-10-25 14:49:32.329 22980 TRACE nova.openstack.common.rpc.amqp
The directory /var/lib/nova/instances/snapshots/tmp5DdrIO does not exist
immidiately after this error shows up.
Permissions to the parent directory are nova:nova 755, I believe they are
correct.
Package: nova-compute
Version: 1:2013.2-0ubuntu1~cloud0
** Affects: nova
Importance: Undecided
Status: New
** Affects: nova (Ubuntu)
Importance: Undecided
Status: New
** Also affects: nova (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1244694
Title:
Creating snapshot fails due to nonexistent temporary directory
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