[dm-crypt] Encrypted fs in file

Matthias Schniedermeyer ms at citd.de
Sun Apr 3 10:41:31 CEST 2016

On 03.04.2016 00:07, doark at mail.com wrote:
> Hello,
> I wanted to make certain that I got this process right since I've never
> done it before and I can't seem to find docs on the subject.
> 1. Cat /dev/zero into a new file till it is big enough.
> 2. Use cryptsetup on the file (format and open).
> 3. Use mkfs on the loop device.
> 4. Mount the loop device as if it were a block device.
> Does this look correct to you?


3) Not the loop device, but the dm-device, the loop it inbetween and is 
handled automatically.

A symlink for the dm-device appears in /dev/mapper/ with the name you 
provided for the open command.

Same for 4) You mount the dm-device



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