[sheepdog] [PATCH] dog: fix to calculate a resizable max VDI size appropriately

[Liu Yuan]

On Tue, Feb 10, 2015 at 05:53:44PM +0900, Teruaki Ishizaki wrote:
> A resizable max VDI size was fixed value, 4TB.
> 

Why we max VDI size is 4TB if we have object size more than 4MB? I remember
in the past max size is 4TB because object is 4MB.

Thanks
Yuan