xf kernel trace , what is the cause ?

[Dave Chinner]

On Wed, May 07, 2014 at 09:18:46AM +1200, Gregory Machin wrote:
> Hi.
> 
> I have a file server that has had 2 xfs Kernel trace dumps about 2 weeks
> apart.
> 
> The RAID 60 data store is mounted as /home with xfs as the file system. The
> /home space is shares via NFS export and CIFS share.  At the time of
> the Trace dumps NFS access hangs and crashed users sessions on the client
> side.  The output of the last traces is below.
> 
> Can you advise as to the cause of this dump and possible resolution ?

Commit 2732036 ("xfs: xfs_remove deadlocks due to inverted AGF vs AGI
lock ordering") fixed it.

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com