Hi. > as I'm stuck with a (non-EFI x86_64) system with encrypted root > partition, I have to enter the passphrase twice (grub needs it for > getting the kernel etc., systemd needs it for mounting the root > partition). This can be quite inconvenient, especially if the passphrase > is long and contains special characters, and grub assumes a different > keyboard layout.
Just fill another LUKS slot with a randomly generated key file and add that file to your initramfs (which already resides on encrypted /boot, right?). If your distro cannot do that, you should probably fixing things there, not adding ugly hacks to the kernel. Check how it is implemented in Arch, for instance [1]. I'm not sure whether this is currently possible with openSUSE, though. Regards, Oleksandr [1] https://klmlinks.wordpress.com/2016/03/
