Fwd: multiple processes hanging doing xfs ops -- 3.17.2

[Dave Chinner]

On Wed, Nov 12, 2014 at 11:56:02AM -0800, L Walsh wrote:
> 
> 
> I just upped from 3.16.2 to 3.17.2 this morning, and after about 2 hours
> uptime, got
> several procs hanging in what looks like xfs territory.
....

> Nov 12 04:43:46 Ishtar kernel: [ 5886.496468] INFO: task xfsdump:38317 blocked for more than 120 seconds.
....
> Nov 12 04:43:46 Ishtar kernel: [ 5886.515691]  [<ffffffff8129b935>] xfs_bulkstat+0x165/0x4e0

You ran xfsdump and that triggered one of the bulkstat regressions
in 3.17. The fixes have been queued to the next 3.17.x stable
kernel, so you'll want to hold off running xfsdump or xfs_fsr until
that kernel is released and you upgrade.

Cheers,

Dave.
-- 
Dave Chinner
david at fromorbit.com