I've heard that on Amazon EC2 I should be using ephemeral drives...but I want/need to be using encrypted volumes.
On my local machine I use cryptsetup to encrypt a device and then mount it and so on...but on Amazon I get the error: "Cannot open device /dev/xvdb for read-only access". Reading further I wonder if this is even possible based on this statement in the Amazon doc set "*An instance store is dedicated to a particular instance; however, the disk subsystem is shared among instances on a host computer*" How are other folks achieving performance and encryption on EC2? Thanks.