Storage driver compatibility

overlay2 is the only storage driver supported by MCR 25.0, with the exception of btrfs, which MCR supports on SLES.

MCR storage driver compatibility

Graphdriver	MCR 25.0	MCR 23.0
overlay2	Supported	Supported
btrfs	Supported only on SLES. Unsupported on all other Linux platforms.	Supported only on SLES. Unavailable on all other Linux platforms.
vfs	Unsupported. Made available for debugging purposes only.	Unsupported. Made available for debugging purposes only.