Oops at xfs_bmbt_get_startoff in SLES 10 2.6.16

[Eric Sandeen]

Felix Blyakher wrote:
> On Apr 21, 2009, at 9:32 PM, Eric Sandeen wrote:
> 
>> Felix Blyakher wrote:
>>> 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
>>>
>> FWIW I can't reproduce either, with the stated commandline.
>>
>> Should try it with a 1k blocksize, though - maybe Lachlan tested 4k on
>> 16k page ia64?
> 
> That's what I've tested on.

Ah, well, I just spoke with Lachlan and he said he tested on x86_64,
4k/4k.  So hrm...

-Eric