Re: Unencrypting file system

[Marc Mutz <Marc.Mutz@uni-bielefeld.de>]

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On Wednesday 29 August 2001 20:56, mclinden@informed.net wrote:
> Excuse me if the answer is obvious but this is one of these cases
> where I cannot afford to make a mistake. I need to unencrypt a file
> system for the purposes of moving it. The data on it is dynamic but I
> can, if need be, put the system into single user mode to do this. The
> question is, what is the best way to convert to an unencrypted file
> system? I'm using the 2.4.3 release.
<snip>

I assume you use the kerneli patches.

You can losetup the source cryptfile, but not mount it. Then losetup 
the target cryptfile; also don't mount it. Let's call /dev/loop1 the 
source and /dev/loop2 the destination. Do

dd if=/dev/loop1 of=/dev/loop2 bs=4k

bs should be <= the blocksize of your (source) underlying filesystem.

Marc

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