On Tue, May 02, 2017 at 05:13:56PM +0300, Amir Goldstein wrote: > How can it create problems if uniqueness is not guaranteed with > Current s_uuid? Even if we did make the xfs uuid table code generic > It couldn't be the vfs default. Filesystems will have to opt in. It creates problems if you e.g. mount an ext4 fs and a dm snaphot of it. The non-XFS file systems are simply buggy in this regard. Non-uniqueue uuids are an absolute no-go.
