I want to delegate non-root user to delete read-only subvolumes (snapshots).
What exactly capabilities/rights I need to grant, so that he can remove his own read-only snapshots?
I've already mounted the btrfs with
-o user_subvol_rm_allowed so users can remove read/write snapshots.
I need it to augment otherwise brillant SnapBtr.py, so non-root users can operate it.