Kernel 2.6.30.4 XFS(..?) regression (& with/2.6.31-rc6)

[Justin Piszcz]

On Sat, 22 Aug 2009, Christoph Hellwig wrote:

> On Sat, Aug 22, 2009 at 06:27:30AM -0400, Justin Piszcz wrote:
>>
>>
>> On Mon, 17 Aug 2009, Justin Piszcz wrote:
>>
>>>
>>>
>>> On Sat, 15 Aug 2009, Christoph Hellwig wrote:
>>>
>>
>> On this system, I am running loop-aes, could that be the culprit?  On all
>> other systems not using loop-aes with 2.6.30.x, I do not see this issue.
>
> Yes, entirely possible.   All the crypto loop / dm implementation used
> to have a tendency to never complete I/O once in a while, although that
> didn't happen anymore recently.

Ok,

What is the best way to debug the issue? git bi-sects between 2.6.29.x and 
2.6.31-rc6? or?

Justin.