Products of fstransform.sourceforge.net
Utilities \ File & Disk Management
fstransform is a tool to change a file-system from one format to another, for example from jfs/xfs/reiser to ext2/ext3/ext4, in-place and without the need for backup. Idea from 'convertfs' program, but it is fully independent code..
Freeware download of file-system transformation tool rc, size