Oops at xfs_bmbt_get_startoff in SLES 10 2.6.16

[Felix Blyakher]

On Apr 21, 2009, at 9:16 PM, Eric Sandeen wrote:

> Kevin Jamieson wrote:
>> On Thu, March 12, 2009 4:13 pm, Kevin Jamieson wrote:
>>> On Thu, March 12, 2009 12:23 pm, Eric Sandeen wrote:
>>>
>>>> For SLES that usually is the best route...
>>>>
>>>> However, http://oss.sgi.com/archives/xfs/2009-02/msg00220.html  
>>>> looks
>>>> applicable... don't think it ever got merged though.
>>>>
>>>> perhaps you could test it?
>>> Thanks, Eric. I will test Lachlan's patch on our system.
>>
>> To follow this up, since applying the patch from the above thread  
>> there
>> have been no re-occurrences of the issue on our test servers over  
>> the past
>> month.
>
> And you hit it pretty reliably before, right?  Sounds like we need to
> give that a pretty strong eyeball and get it merged, perhaps.

I was looking at this patch too.
But I could never reproduce the problem, even with Lachlan's test
program. Kevin, any idea what kind of io load triggered this problem?
The patch looks right, but I really want to prove the problem
exists, and the patch addresses it.

Felix