[Sheepdog] [PATCH v2 10/10] farm: add a documentation for farm internals

[Dietmar Maurer]

> +Farm has a working directory that is the ground for storing objebts
> +from Sheepdog I/O requests. That being said, the I/O performance for Vm
> +Guests would be practically the same as Simple Store.

I don't really understand that. You need to compute the sha1 hash and compress
all data - so how can you get the same I/O performance?

- Dietmar