Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752695AbaKGVEi (ORCPT ); Fri, 7 Nov 2014 16:04:38 -0500 Received: from mail.windriver.com ([147.11.1.11]:55826 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751822AbaKGVEh (ORCPT ); Fri, 7 Nov 2014 16:04:37 -0500 Message-ID: <545D33DB.3070904@windriver.com> Date: Fri, 7 Nov 2014 15:04:27 -0600 From: Chris Friesen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.7.0 MIME-Version: 1.0 To: "Martin K. Petersen" CC: Jens Axboe , lkml , , Mike Snitzer Subject: Re: absurdly high "optimal_io_size" on Seagate SAS disk References: <545BA625.40308@windriver.com> <545BAD05.3050800@windriver.com> <545BB3AB.8070409@windriver.com> <545BC88A.7060706@windriver.com> <545C5A1B.9020206@windriver.com> <545D13FF.6090306@windriver.com> In-Reply-To: Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [147.11.116.14] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/07/2014 01:17 PM, Martin K. Petersen wrote: > I'd suggest trying /dev/sgN instead. That seems to work. Much appreciated. And it's now showing an "optimal_io_size" of 0, so I think the issue is dealt with. Thanks for all the help, it's been educational. :) Chris -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/