Encrypting non-root partitions with dm_crypt and LUKS

First of all it should be said that encrypting the /home partition only is not recommended. This does not nearly give you the same security as e.g. encrypting all your partitions. I missed doing this task on my laptop during installation and i am too lazy to copy all my data + OS to some external location, encrypt all partations and move them back. This is why i decided to encrypt my /home partition only.