On Mon, Jan 29, 2018 at 09:08:34PM +1100, Dave Chinner wrote: > I've implemented both sides on XFS to provide the capability for an > XFS filesystem to host XFS subvolumes. however, this is an abstract > interface and so if someone modifies ext4 to use a virtual block > address space, then XFS will be able to host cloneable ext4 > subvolumes, too. :P This sounds really interesting. Would it be possible to write up a brief summary of your current interface? Even if it's not completely correct it might be a useful starting point. --b.
