maybe i should have given more details about my suggested solution.
create your partitions as usual, but create one partition big enough to store all your encrypted data: /dev/sda1 -> /boot /dev/sda2 -> all encrypted data ... encrypt the desired partition: cryptsetup ... create encrypted-sda2 /dev/sda2 put LVM on the encrypted device: pvcreate ... /dev/mapper/encrypted-sda2 vgcreate ... encrypted-volume /dev/mapper/encrypted-sda2 create your logical volumes for your encrypted needs: lvcreate ... --name encrypted-root encrypted-volume lvcreate ... --name encrypted-swap encrypted-volume now you are able to add a single entry into crypttab while having multiple logical volumes encrypted
