From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:21543 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753122AbaHTXn2 (ORCPT ); Wed, 20 Aug 2014 19:43:28 -0400 From: Jeff Moyer Subject: Re: [patch, v3] add an aio test which closes the fd before destroying the ioctx References: <20140820225701.GG26465@dastard> Date: Wed, 20 Aug 2014 19:43:19 -0400 In-Reply-To: <20140820225701.GG26465@dastard> (Dave Chinner's message of "Thu, 21 Aug 2014 08:57:01 +1000") Message-ID: MIME-Version: 1.0 Content-Type: text/plain Sender: fstests-owner@vger.kernel.org To: Dave Chinner Cc: fstests@vger.kernel.org List-ID: 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. > 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? Cheers, Jeff