[sheepdog] [PATCH] sheep: correct read_epoch()

[Christoph Hellwig]

On Wed, Jun 06, 2012 at 05:48:04PM +0800, Liu Yuan wrote:
> From: Liu Yuan <tailai.ly at taobao.com>
> 
> When startup the cluster for the first time, we would get the following message:
> 
> Jun 06 17:29:32 read_epoch(525) failed to read epoch 0
> 
> This should be printed because cluster doesn't go error.

Looks fine, altough I have a patch to completely remove read_epoch()
in my queue.