xfs deadlocks since upgrading to 4.1.15

[Stefan Priebe - Profihost AG]

Am 17.01.2016 um 20:48 schrieb Dave Chinner:
> On Sat, Jan 16, 2016 at 08:17:00PM +0100, Stefan Priebe wrote:
>> Hi Dave,
>>
>> Am 15.01.2016 um 23:55 schrieb Dave Chinner:
>>> On Fri, Jan 15, 2016 at 10:07:58AM +0100, Stefan Priebe wrote:
>>>> Hello,
>>>>
>>>> since we upgraded from 3.18 to 4.1.15 i've seen many deadlocks. Alle
>>>> call traces show xfs.
>>>>
>>>> Attention all those are down top instead of top down (sorry for the
>>>> wrong order).
>>>
>>> Can you repost them with line wrapping turned off, so they are
>>> readable without causing beeding eye syndrome?
>> i'm sorry. i was a bit optimistic that someone can read that.
>>
>> Here are the traces in correct order, without timestamps but at
>> pastebin which seems to be easier at least with thunderbird as it
>> has no easy to use option to disable wrapping.
>>
>> Nr 1:
>> http://pastebin.com/raw/Fuxd86TP
>>
>> Nr 2:
>> http://pastebin.com/raw/Dp7mEcKi
>>
>> Nr 3:
>> http://pastebin.com/raw/BY3gUwzx
> 
> Commit 7a29ac4 ("xfs: give all workqueues rescuer threads") should
> fix it.

Thx!

Greets,
Stefan

> Cheers,
> 
> Dave.
>