Heck, that would be friggin' amazing if people really wanted to do that :) I've been working full time and then some for near a month and a half now, and I'm certainly not getting paid for it yet... Email address in the profile is my paypal account :)

Yep, that's on the list.

This should do what you want - with the caveat that I haven't thought about multiple tiers, but I can't imagine that being that hard to add.

It's currently written so there's a systemwide pool of block devices that are used for cache, and all cached data is spread around them, regardless of where it came from. It wouldn't take much work at all to change that though, if there was something that'd benefit.

Hey, at least someone noticed :)

That version was pretty raw. The current one is a lot farther along than that, but it's still got a ways to go - I'm hoping to have it ready for inclusion in a few months, if I can keep working on it full time. Anyone want to fund me? :D