From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DEB9BC43387 for ; Mon, 7 Jan 2019 07:17:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AE0EF20859 for ; Mon, 7 Jan 2019 07:17:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725550AbfAGHRr (ORCPT ); Mon, 7 Jan 2019 02:17:47 -0500 Received: from mx2.suse.de ([195.135.220.15]:35600 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725804AbfAGHRr (ORCPT ); Mon, 7 Jan 2019 02:17:47 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 7A49DABCB; Mon, 7 Jan 2019 07:17:46 +0000 (UTC) Subject: Re: failed command: WRITE FPDMA QUEUED with Samsung 860 EVO To: Sitsofe Wheeler , Laurence Oberman Cc: linux-ide@vger.kernel.org, linux-block@vger.kernel.org References: <1546445424.29282.1.camel@redhat.com> <1546540117.24199.0.camel@redhat.com> <1546548458.24199.2.camel@redhat.com> <1546555220.2666.1.camel@redhat.com> From: Hannes Reinecke Message-ID: <4c231a3e-1ae3-c872-f6f8-06b19ddfd20b@suse.de> Date: Mon, 7 Jan 2019 08:17:46 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 1/4/19 8:33 AM, Sitsofe Wheeler wrote: > Blimey Laurence - you're really pushing the boat out on this one! > [ .. ] > I've yet to attach the disk directly to the mobo. It's a bit fiddly as > the most accessible port is meant for the DVD drive and I think it's > speed is slower than the others. > > The speed of the ATA ports is lower than you might expect (this > machine is fairly old): > [ .. ] > [ 3.242623] ata2.00: FORCE: horkage modified (noncq) > [ 3.242683] ata2.00: supports DRM functions and may not be fully accessible > [ 3.242686] ata2.00: ATA-11: Samsung SSD 860 EVO 500GB, RVT01B6Q, > max UDMA/133 > [ 3.242689] ata2.00: 976773168 sectors, multi 1: LBA48 NCQ (not used) > [ 3.245518] ata2.00: supports DRM functions and may not be fully accessible > [ 3.247611] ata2.00: configured for UDMA/133 'slower' is an understatement. That adapter can't do NCQ, hence 'WRITE FPDMA QUEUED' (which _is_ an NCQ command) will never be issued. So I'd be _very_ surprised if you still see this problem there ... Do you? Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@suse.de +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg)