[Sheepdog] [RFC PATCH v2 0/10] add a new store named 'farm'

[Christoph Hellwig]

On Thu, Dec 22, 2011 at 02:52:33PM +0800, Liu Yuan wrote:
>  - no stale objects that are found in current implementation, that will
> waste storage a lot.


Reference counting the object will be absolute essential.  The by far
cheapest way for that would be to reference count them in an xattr on
the actual object.

Mortia and Yuan, is there a strict policy against xattrs in sheepdog,
and if so yes?