On Wed, 14 May 2014 10:01:42 +0200, Stefan G. Weichinger wrote:

> >> Doesn't that screw up the whole idea of checksumming etc ?  
> > 
> > Not to my mind. The bits are recorded and checksummed, that's what 
> > matters. If a bit on a platter is flipped, the decrypted bits will
> > also change.  
> 
> But then the "container" of the btrfs would be corrupted, right?

No, because each element of the RAID is encrypted separately, so btrfs
can still use the good one to repair the bad one. If you were to create
an mdadm array, put dm-crypt on that and then btrfs on top, which is more
efficient because it encrypts each byte only once, then you would lose
the check and repair facilities.


-- 
Neil Bothwick

-Come, come, why they couldn't hit an elephant from this dist-