Description of problem:
I would like to have a system where the keyfile is on a physically disconnected device, without which the machine wouldn't be able to boot. To do so, from what I can tell I would have to modify rc.sysinit so that if it can't find the key it calls an external program to mount/load the key before attempting an unlock. Currently the key is on a usb stick that is inserted when the machine boots so no automounter is available, and I'd rather not have an entry in /etc/fstab for removeable media...
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Steps to Reproduce: