Tinker wrote:
> Aha.
> 
> *Is* the keydisk the master key, and hence can't be changed?

The keydisk is the mask for the master key. It can (in theory) be changed like
changing a password. Really, the key disk is just a prehashed password.

> 
> 
> Very low priority topic:
> 
> What about implementing some routine for regenerating the master key, 
> even if that would imply reprocessing *all* of the disk's contents?
> 
> That could be beneficial in a place where you don't have the space to 
> backup 100% of the disk as to start over.

You could, but you'd be really screwed if you crashed halfway. I don't think
the kernel can/should do this, but it is not impossible for a userland utility
to manipulate softraid partitions.

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