To make my setup a bit more secure, I want to encrypt the disk array. After making a backup elsewhere, I've cleared the whole data array and set the disk format to xfs-encrypted. Then, after selecting a keyfile, I started the array and formatted the disks. This went well but after a reboot I'm asked to enter the keyfile again. This normal of course but the array won't start after uploading the same keyfile.
What am I doing wrong? Or is this a bug?