On 04/06/2016 06:25 AM, David Christensen wrote: > dm-crypt: > > I have a Debian 7.10 (Wheezy) computer with a random-key swap device. > The disk and swap are working. > > > When I try to backup the LUKS header: > > # cryptsetup luksHeaderBackup /dev/sda2 --header-backup-file > luksheaderbackup-sda2.bin > Device /dev/sda2 is not a valid LUKS device. > > > Is this expected/ normal behavior for a dm-crypt/ LUKS random-key swap > partition? LUKS device cannot be used with random volume key, so I guess you use just plain device without header. (So obviously header backup fails because there is no header.) You can verify it by checking entry in /etc/crypttab - no luks keyword: > # grep sda2 /etc/fstab > /dev/mapper/sda2_crypt none swap or running "cryptsetup status sda2_crypt" over unlocked device (type is LUKS1 for LUKS devices) Milan _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
