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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 7ED24C3A589 for ; Tue, 20 Aug 2019 16:46:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 522312054F for ; Tue, 20 Aug 2019 16:46:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727272AbfHTQq2 (ORCPT ); Tue, 20 Aug 2019 12:46:28 -0400 Received: from vsmx011.vodafonemail.xion.oxcs.net ([153.92.174.89]:62317 "EHLO vsmx011.vodafonemail.xion.oxcs.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726663AbfHTQq2 (ORCPT ); Tue, 20 Aug 2019 12:46:28 -0400 X-Greylist: delayed 529 seconds by postgrey-1.27 at vger.kernel.org; Tue, 20 Aug 2019 12:46:28 EDT Received: from vsmx003.vodafonemail.xion.oxcs.net (unknown [192.168.75.197]) by mta-5-out.mta.xion.oxcs.net (Postfix) with ESMTP id 5115C3E23EE; Tue, 20 Aug 2019 16:37:38 +0000 (UTC) Received: from lazy.lzy (unknown [87.157.113.162]) by mta-7-out.mta.xion.oxcs.net (Postfix) with ESMTPA id BC027300A9C; Tue, 20 Aug 2019 16:37:23 +0000 (UTC) Received: from lazy.lzy (localhost [127.0.0.1]) by lazy.lzy (8.15.2/8.14.5) with ESMTPS id x7KGbMNN003176 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Tue, 20 Aug 2019 18:37:22 +0200 Received: (from red@localhost) by lazy.lzy (8.15.2/8.15.2/Submit) id x7KGbMvI003175; Tue, 20 Aug 2019 18:37:22 +0200 Date: Tue, 20 Aug 2019 18:37:22 +0200 From: Piergiorgio Sartor To: Christoph Hellwig Cc: Alan Stern , Piergiorgio Sartor , Jens Axboe , USB list , linux-block@vger.kernel.org, Kernel development list Subject: Re: reeze while write on external usb 3.0 hard disk [Bug 204095] Message-ID: <20190820163722.GA2991@lazy.lzy> References: <20190817095422.GA4200@lazy.lzy> <20190820072326.GD28968@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190820072326.GD28968@lst.de> User-Agent: Mutt/1.12.1 (2019-06-15) X-VADE-STATUS: LEGIT Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Tue, Aug 20, 2019 at 09:23:26AM +0200, Christoph Hellwig wrote: > On Mon, Aug 19, 2019 at 10:14:25AM -0400, Alan Stern wrote: > > Let's bring this to the attention of some more people. > > > > It looks like the bug that was supposed to be fixed by commit > > d74ffae8b8dd ("usb-storage: Add a limitation for > > blk_queue_max_hw_sectors()"), which is part of 5.2.5, but apparently > > the bug still occurs. > > Piergiorgio, > > can you dump the content of max_hw_sectors_kb file for your USB storage > device and send that to this thread? Hi all, for both kernels, 5.1.20 (working) and 5.2.8 (not working), the content of /sys/dev/x:y/queue/max_hw_sectors_kb is 512 for USB storage devices (2.0 and 3.0). This is for the PC showing the issue. In an other PC, which does not show the issus at the moment, the values are 120, for USB2.0, and 256, for USB3.0. bye, -- piergiorgio