[sheepdog] [RFC]sheepdog's snapshot

[harryxiyou]

Hi guys,

  I wanna know the theory about sheepdog's snapshot. Cloud anyone please
give me some docs or some suggestions? I just read the source codes
https://github.com/collie/sheepdog/blob/master/sheep/farm/snap.c
and the docs https://github.com/collie/sheepdog/blob/master/doc/farm-internal.txt
But i cannot get a framework about sheepdog's snapshot. If anyone give
me the snapshot's
algorithm flow chart, it will be better ;-).

Thanks in advance.

-- 
Thanks
Harry Wei