I don't think so. If you have a 512 bit key (or rather a double-256 bit one) as used by XTS, your header backup is twice as large. A few more details are in FAQ Ite, 6.12. Arno On Thu, Nov 20, 2014 at 19:56:42 CET, kqt4at5v@xxxxxxxxx wrote: > I have 2 partitions mirrored, with Luks on top > md4 : active raid1 sdb4[0] sda4[1] > 1932713920 blocks [2/2] [UU] > > I run > cryptsetup luksHeaderBackup /dev/md4 --header-backup-file nsa320_dm_crypt_header_md4_20141120 > and get > -r-------- 1 root root 2097152 Nov 20 11:16 nsa320_dm_crypt_header_md4_20141120 > which is twice the size of the header backup of a single drive > Am I doing this wrong? > > Richard > _______________________________________________ > 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
