Create
https://ubuntuforums.org/showthread.php?t=837416
sudo cryptsetup luksChangeKey /dev/sda5 sudo cryptsetup luksDump /dev/sda5
Mount LUKS crypted device
sudo apt-get install -y cryptsetup sudo cryptsetup luksUUID /dev/sdb1 # sudo dmsetup ls --target crypt DEVICE=/dev/sdb1 LUKS_UUID=$(sudo cryptsetup luksUUID ${DEVICE}) sudo cryptsetup luksOpen ${DEVICE} ${LUKS_UUID} sudo mount /dev/mapper/${LUKS_UUID} /mnt
Unmount LUKS crypted device
sudo umount /mnt sudo cryptsetup luksClose ${LUKS_UUID}
change device label
sudo e2label /dev/mapper/luks-fbf84040-3193-4f4b-123456-48af9e123456 backup_disk_1