Re: grub-probe detects ext4 wronly as ext2

[Felix Zielcke]

Oh well I should have used grep with -i
meta_bg and META_BG does make a difference

Anyway in release-notes I now found this:

Add support for the an alternative block group descriptor layout which
allows for on-line resizing without needing to prepare the filesystem
in advance.  (This is the incomat feature flag meta_bg.)

So it seems you'll have sooner or later to worry about that.
But I still think it's currently not that important to implement it, because 
it's currently not compatible with resize_inode