libblkid is restrictive as to what it accepts as valid reiserfs or valid
NTFS.
One can mkfs an NTFS with 256B sectors and it's supported by ntfs-3g
Reiserfs can have 512B blocks and it works both with mkfs.ntfs and Linux.
Patch attached.

-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko