[sheepdog] [PATCH V4 2/2] collie: optimize 'collie vdi check' command

[Yunkai Zhang]

发自我的 iPhone

在 2012-9-3，22:44，MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp> 写道：

> At Mon, 3 Sep 2012 22:14:56 +0800,
> Yunkai Zhang wrote:
>> 
>> If 'collie vdi check' must read valid objects, what does it check?
> 
> It fixes vdi inconsistency after gateway (and qemu) failure.  It looks
> completely wrong for clients to see data inconsistency in other
> scenarios.

How can we know wether a cluster is consistent?

Can we promise sheepdog's code is always correct, will not cause data inconsistency except for gateway failure?

After we found inconsistency, showing the difference to user instead of repairing it directly, can give us a chance to check if program's bug or just gateway failure, doesn't it?

> 
> Thanks,
> 
> Kazutaka