Hello,
we a re in the same situation as you. We tried vprotect but at the end, we used the script
provided in the python SDK example:
https://github.com/oVirt/ovirt-engine-sdk/tree/master/sdk/examples
https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/vm_bac...
We adapt it. It use the same logic as the one here :
https://github.com/zipurman/oVIRT_Simple_Backup
We didn't go for zipurman's solution because we actually don't really know how
ovirt's plugins work.