nublug

the crypttab.d thing is called a drop-in directory. linux will read files you make in these and overwrite the config files with the values in the drop-in files. it’s a way to add your own edits to config files without editing the default config files directly, so you don’t have to say manually copy crypttab to crypttab.old for a backup and instead always have a default config to fall back to if things go wrong by just commenting out your few changes in the drop-in file.

i don’t know anything about raid, but judging by your manual command to unlock and mount it shouldn’t be any different than my non-raid extra encrypted disks setup.

it should be just adding it to crypttab and fstab and a keyfile and grub config edit maybe, and if you mess up you can still get in to edit these to try again with a liveusb (easiest way to go back to previous setup is just comment out the lines you add) and manually unlocking and mounting like you are now anyway, so don’t be scared.

https://wiki.archlinux.org/title/Dm-crypt/Encrypting_an_entire_system

is a lot but the specific info you need for your setup should be various places there and linked there. good luck!

fuck this nazi piece of shit and his sloppy ass slop and every one of you dipshits praising him and this garbage. “how much progress he’s made for FOSS” lol, lmao, lmfao, even.