Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933329AbaFIP2J (ORCPT ); Mon, 9 Jun 2014 11:28:09 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:16226 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752169AbaFIP2E (ORCPT ); Mon, 9 Jun 2014 11:28:04 -0400 Message-ID: <5395D24D.9000306@fb.com> Date: Mon, 9 Jun 2014 09:27:09 -0600 From: Jens Axboe User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Christoph Hellwig CC: Ming Lei , Matias Bj??rling , , , , Linux Kernel Mailing List , Subject: Re: [PATCH v6] NVMe: conversion to blk-mq References: <1402057225-7312-1-git-send-email-m@bjorling.me> <1402057225-7312-2-git-send-email-m@bjorling.me> <5395BFF2.2080402@fb.com> <20140609145944.GA30626@infradead.org> In-Reply-To: <20140609145944.GA30626@infradead.org> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.57.29] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.12.52,1.0.14,0.0.0000 definitions=2014-06-09_03:2014-06-09,2014-06-09,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 kscore.is_bulkscore=9.99200722162641e-16 kscore.compositescore=0 circleOfTrustscore=0 compositescore=0.324642340081358 urlsuspect_oldscore=0.324642340081358 suspectscore=0 recipient_domain_to_sender_totalscore=0 phishscore=0 bulkscore=0 kscore.is_spamscore=0 recipient_to_sender_totalscore=0 recipient_domain_to_sender_domain_totalscore=2524143 rbsscore=0.324642340081358 spamscore=0 recipient_to_sender_domain_totalscore=0 urlsuspectscore=0.9 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1406090199 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2014-06-09 08:59, Christoph Hellwig wrote: > On Mon, Jun 09, 2014 at 08:08:50AM -0600, Jens Axboe wrote: >>> [ 487.704074] nvme 0000:00:07.0: Cancelling I/O 202 QID 1 >>> [ 487.717881] nvme 0000:00:07.0: Aborting I/O 202 QID 1 >>> [ 487.736093] end_request: I/O error, dev nvme0n1, sector 91532352 >>> [ 487.747378] nvme 0000:00:07.0: completed id 0 twice on queue 0 >>> >>> >>> when running fio randread(libaio, iodepth:64) with more than 3 jobs. >>> >>> And looks no such failure when jobs is 1 or 2. >> >> It's a known issue, make sure you have this patch: >> >> https://urldefense.proofpoint.com/v1/url?u=http://git.kernel.dk/?p%3Dlinux-block.git%3Ba%3Dcommit%3Bh%3Df6be4fb4bcb396fc3b1c134b7863351972de081f&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=3JMVyziIyZtZ5cv9eWNLwQ%3D%3D%0A&m=MKK7A%2B9AnXXwtMV9YPSFEprXId0z0WLtd2JQPxnaNVc%3D%0A&s=45425e5d17390ae912457035ff081b95a7084725706ffe91166a1bdb25d8bf3d > > So without this patch we can get duplicate completions? That could > explain the issues that Robert sees with scsi-mq and hpsa.. I don't see how that would happen in general, except if the timeout part was buggy. -- Jens Axboe -- 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/