Contribution: OpenNebula backup script for QCOW2 datastores

Hi @feldsam ,
I just want to ensure myself that I understand how your addon works. I wonder how your script will backup my VM images. I have image type DATABLOCK with “Persistent” setting set to “no”, this image is used by VMs as OS/DATA disk.

VM disk image looks like this :
qemu-img info 0
image: 0
file format: qcow2
virtual size: 10G (10737418240 bytes)
disk size: 9.7G
cluster_size: 65536
backing file: /var/lib/one/datastores/103/cdfd110a37e569165315b96f913293a2
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false

Can you explain please if VM will be snapshoted, than backed up and block commited, or not ?
Thanks.