Ubuntu
nova package

Nova snapshots

Asked by GP

I'm having some troubles creating snapshots from running instances. I run nova image-create <instance name> <snapshot name> and it runs with no errors, but no snapshot is created either.

In the nova compute log there is an error:
2014-03-28 09:25:48.445 130915 ERROR nova.openstack.common.rpc.amqp [req-e7129148-7d86-4156-9f8d-8547288d48a1 ec518c8689964bebaae7d084eae4560d 6127d771b5014623bee2cf8a82fc1aff] Exception during message handling

and further details show IncompatibleObjectVersion: Version 1.9 of Instance is not supported

I can spawn new instances on this compute no with no problem.

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Manfred Hampl
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Best Manfred Hampl (m-hampl) said : 		#1

Googling for IncompatibleObjectVersion brings up (among others)
https://ask.openstack.org/en/question/24933/failed-when-i-try-to-start-openstack-compute/
with a similar problem caused by different versions of the openstack packages between the compute node and the controller node.
Maybe you also have such situation.

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GP (garrett-s-page) said : 		#2

Thanks Manfred Hampl, that solved my question.

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GP (garrett-s-page) said : 		#3

I had installed everything off of the cloud-archive:havana repository, but running apt-get upgrade nova on the compute and controller nodes fixed the problem.