From: Dave Chinner Subject: Re: Test generic/299 stalling forever Date: Fri, 19 Jun 2015 09:34:30 +1000 Message-ID: <20150618233430.GK20262@dastard> References: <20150618155337.GA10439@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-ext4@vger.kernel.org, fstests@vger.kernel.org To: Theodore Ts'o Return-path: Content-Disposition: inline In-Reply-To: <20150618155337.GA10439@thunk.org> Sender: fstests-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org On Thu, Jun 18, 2015 at 11:53:37AM -0400, Theodore Ts'o wrote: > I've been trying to figure out why generic/299 has occasionally been > stalling forever. After taking a closer look, it appears the problem > is that the fio process is stalling in userspace. Looking at the ps > listing, the fio process hasn't run in over six hours, and using > attaching strace to the fio process, it's stalled in a FUTUEX_WAIT. > > Has anyone else seen this? I'm using fio 2.2.6, and I have a feeling > that I started seeing this when I started using a newer version of > fio. So I'm going to try roll back to an older version of fio and see > if that causes the problem to go away. I'm running on fio 2.1.3 at the moment and I havne't seen any problems like this for months. Keep in mind that fio does tend to break in strange ways fairly regularly, so I'd suggest an upgrade/downgrade of fio as your first move. Cheers, Dave. -- Dave Chinner david@fromorbit.com