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Instance snapshotting error

 

Hi all,

I use openstack (folsom release) + XCP + ubuntu 12.04.
I tried to create a snapshot of an ubuntu instance.
Unfortunately, I get this error. Any ideas how to deal with this error?
-----
2013-03-12 12:54:02 AUDIT nova.compute.manager
[req-39dc25ff-686d-46b8-98ac-29b3b08dbe94 admin demo] [instance:
945a44a0-2001-4165-a66c-a40ae552ab12] instance snapshotting
2013-03-12 12:54:36 ERROR nova.openstack.common.rpc.amqp
[req-39dc25ff-686d-46b8-98ac-29b3b08dbe94 admin demo] Exception during
message handling
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp Traceback (most
recent call last):
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/openstack/common/rpc/amqp.py", line 393, in
_process_data
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     rval =
self.proxy.dispatch(ctxt, version, method, **args)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/openstack/common/rpc/dispatcher.py", line 133, in
dispatch
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     return
getattr(proxyobj, method)(ctxt, **kwargs)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/exception.py", line 117, in wrapped
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     temp_level,
payload)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     self.gen.next()
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/exception.py", line 94, in wrapped
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     return f(self,
context, *args, **kw)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/compute/manager.py", line 210, in decorated_function
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     pass
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     self.gen.next()
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/compute/manager.py", line 196, in decorated_function
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     return
function(self, context, *args, **kwargs)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/compute/manager.py", line 238, in decorated_function
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     e,
sys.exc_info())
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     self.gen.next()
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/compute/manager.py", line 225, in decorated_function
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     return
function(self, context, *args, **kwargs)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/compute/manager.py", line 1651, in snapshot_instance
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp
self.driver.snapshot(context, instance, image_id, update_task_state)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/virt/xenapi/driver.py", line 194, in snapshot
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp
self._vmops.snapshot(context, instance, image_id, update_task_state)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/virt/xenapi/vmops.py", line 712, in snapshot
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp
update_task_state) as vdi_uuids:
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/usr/lib/python2.7/contextlib.py", line 17, in __enter__
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     return
self.gen.next()
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/virt/xenapi/vm_utils.py", line 627, in
snapshot_attached_here
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp
original_parent_uuid)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp   File
"/opt/stack/nova/nova/virt/xenapi/vm_utils.py", line 1831, in
_wait_for_vhd_coalesce
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp     raise
exception.NovaException(msg)
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp NovaException: VHD
coalesce attempts exceeded (5), giving up...
2013-03-12 12:54:36 TRACE nova.openstack.common.rpc.amqp
2013-03-12 12:55:03 AUDIT nova.compute.resource_tracker [-] Auditing
locally available compute resources
-------

Thank you,
Afef

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