On Wed, Oct 03, 2018 at 07:52:05AM -0700, Darrick J. Wong wrote: > Will there be a migration tool in xfsprogs to help administrators roll > their filesystems forward? Generally we don't seem to support enabling > new features on old filesystems (ala ext4) though maybe we should for a > very small and controlled set of porting operations? I wasn't planning to unless needed, mostly because I don't really think we'll see such file systems in the wild. They'd be very broken if you are using the current code on them already.