Backwards Compatibility Between CSI snapshots and the old In-Tree snapshots?

[arianitu]

Describe the problem/challenge you have
After switching to CSI backups/restores and you have a backup made from the old in-tree backups, such as velero-plugin-gcp, will restores still work?

We want to know since the in-tree volume drivers will be removed in Kubernetes 1.21 and we need to know what happens with our old backups?

Thank you!

[nrb]

@arianitu This is feature we'll need to test for movement between 1.20 to 1.21.

As of today, with CSI snapshot support being beta, we do not have a translation layer that makes a VolumeSnapshotContents for each Velero-native snapshot. I think such a wrapper will be required to do this move.