How to understander kasten create volumesnapshot and volumesnapshotcontent with restoresize = 0 after execute resotre action?

@jaiganeshjk 

Glen, Thank you for opening this topic.

As per my understanding, restoreSize is usually populated from the PVC capacities.

In this case for the snapshot that shows restoreSize to zero is sourced from the existing snapshot. 
Probably the CSI driver is not populating the restoreSize if the source is another snapshot.

k10-clone-* snapshotclass is created by K10 and used internally for snapshot copy and conversion during an export.

We don’t recommend using it as a default snapshotclass for your provisioner. 
Please remove the annotation for k10 snapshotclass from k10-clone snapshotclass if it has any.