Storage driver compatibility

overlay2 is the only storage driver MCR builds and supports, with the exception of the btrfs storage driver, which Mirantis will continue to build and support exclusively for the SLES platform (for which overlay2 is also viable).

MCR storage driver compatibility

Graphdriver	MCR 20.10	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.
zfs	Unsupported	Unavailable
fuseoverlayfs	Unsupported	Unavailable
aufs	Unsupported	Unavailable
overlay	Unsupported	Unavailable
devicemapper	Unsupported	Unavailable
vfs	Unsupported	Unsupported