From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Garman Subject: Re: linux disk access when idle Date: Fri, 21 Aug 2009 12:31:13 -0500 Message-ID: <20090821173113.GC18915@sewage> References: <3ECBDC05781B3D48ABD520A01ABF2F9B2E9A6F9E25@SE-EX008.groupinfra.com> <371021.65217.qm@web51309.mail.re2.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Foster_Brian@emc.com Cc: Jon@eHardcastle.com, linux-raid@vger.kernel.org, andrew.henry@logica.com List-Id: linux-raid.ids On Fri, Aug 21, 2009 at 12:35:19PM -0400, Foster_Brian@emc.com wrote: > > There is some for of flag you can apply to see write requests and the > > application that is doing them.......? > > > > You might find this useful: > > echo 1 > /proc/sys/vm/block_dump > > Then watch your syslog files... Thank you. That along with Ric Wheeler's suggestion of blktrace ought to help me get to the bottom of this. Thanks again! Matt