Re: cryptsetup problem

[Andrew McGlashan <andrew.mcglashan@affinityvision.com.au>]

On 3/06/2014 5:38 AM, ken wrote:
> It would be better to write /dev/random or /dev/urandom than
> /dev/zero... if you want to stay with whatever it is you're using.

Okay, well /dev/urandom is pseudo random, /dev/random is real random and
will block if there isn't enough entropy.

All the randomness is required when setting up the initial crypt
volumes, then is it using the crypt algorithms with the key, so no more
random work needed.  Writing /dev/zero to a crypt volume effectively
writes /random/ crypto data across the volume in a simple way, it's only
time consuming due to the volume of data it has to write.

Thanks
A.