I'm having a hard time getting a Raspberry Pi NAS working with a encrypted external harddisk.
(I know it's not the best hardware, but I'd like to try this first before investing in other platforms)
It was encrypted with LUKS, which seems common. Normally I should be able to mount it after running:
sudo cryptsetup luksOpen /dev/sda1 my_encrypted_volume
But this results in:
Cannot initialize device-mapper. Is dm_mod kernel module loaded?
I've used the image from: https://sourceforge.net/projec…/Raspberry%20Pi%20images/
Wouldn't it make sense to include a kernel module that's required for a common encryption standard?
Installing the openmediavault-luksencryption plugin didn't seem to help.