luks/lvm for /usr but not /

[slashbeast]

luks/lvm for /usr but not /

[KevinMKorb]

Nevermind. I was being a dummy and supplying the options on the initrd= line instead of the kernel command line.

[slashbeast]

for future reference, this should be easly handled, simple "root=/dev/sda1 luks enc_root /dev/sda2 lvm"

assuming hat sda2 is your lvm pv, it will mount in unencrypted form sda2 as enc_root and lvm will pick it as pv, rest should be transparent.