From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ipmail05.adl6.internode.on.net ([150.101.137.143]:6664 "EHLO ipmail05.adl6.internode.on.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753468AbaHUJRE (ORCPT ); Thu, 21 Aug 2014 05:17:04 -0400 Date: Thu, 21 Aug 2014 19:16:29 +1000 From: Dave Chinner Subject: Re: [patch, v3] add an aio test which closes the fd before destroying the ioctx Message-ID: <20140821091629.GZ20518@dastard> References: <20140820225701.GG26465@dastard> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: fstests-owner@vger.kernel.org To: Jeff Moyer Cc: fstests@vger.kernel.org List-ID: On Wed, Aug 20, 2014 at 07:43:19PM -0400, Jeff Moyer wrote: > Hi, Dave, > > Dave Chinner writes: > > > IOWs, we now have two AIO+DIO tests showing the same symptoms that > > no other tests show. This tends to point at AIO not being fully > > cleaned up and completely freed by the time the processes > > dispatching it have exit()d. This failure generally occurs when > > there is other load on the system/disks backing the test VM (e.g. > > running xfstests in multiple VMs at the same time) so I suspect it > > has to do with IO completion taking a long time. > > Process exit waits for all outstanding I/O, but maybe it's an rcu thing. Hmmm - __fput()? > > Can you spend some time trying to reproduce this and getting to the > > bottom of whatever is triggering the unmount error? > > I can take a look, but not until next week. Hopefully that's ok? Yeah, that's fine. I don't have the bandwidth to look at it either right now, so I'll just expunge the test for the meantime. Thanks, Jeff! -Dave. -- Dave Chinner david@fromorbit.com