Also refer to FAQ item 2.6 https://gitlab.com/cryptsetup/cryptsetup/wikis/FrequentlyAskedQuestions The zeroing out of the mapped container is advisable if this needs high security, i.e. is not just for experiments. Regards, Arno On Sun, Apr 03, 2016 at 18:03:11 CEST, Sven Eschenberg wrote: > And regarding 1): > > You might want to use dd for that and /dev/urandom. (Or use > /dev/zero and then zero out the inner device before creating the > filesystem). > > Regards > > -Sven > > > Am 03.04.2016 um 10:41 schrieb Matthias Schniedermeyer: > >On 03.04.2016 00:07, doark@xxxxxxxx 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? > > > >Nearly. > > > >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 > > > > > > > > > _______________________________________________ > dm-crypt mailing list > dm-crypt@xxxxxxxx > http://www.saout.de/mailman/listinfo/dm-crypt -- Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@xxxxxxxxxxx GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D 9718 ---- A good decision is based on knowledge and not on numbers. -- Plato If it's in the news, don't worry about it. The very definition of "news" is "something that hardly ever happens." -- Bruce Schneier _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
