From owner-freebsd-fs@freebsd.org Wed Oct 19 06:28:23 2016 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0A8F6C18779 for ; Wed, 19 Oct 2016 06:28:23 +0000 (UTC) (envelope-from ardovm@yahoo.it) Received: from nm40-vm7.bullet.mail.ir2.yahoo.com (nm40-vm7.bullet.mail.ir2.yahoo.com [212.82.97.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7D7957A7 for ; Wed, 19 Oct 2016 06:28:21 +0000 (UTC) (envelope-from ardovm@yahoo.it) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.it; s=s2048; t=1476858494; bh=BiX2V52BVJn+4omHppXbRIQAGPoiPvCD4ru304NzlxY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From:Subject; b=IoxHJL2Ru9pAETpfu10tyFNo+Oo3m86l7MVAsKUJIfznOp0YUCgKuuW6pAUisX4KmsCPGsG18D4+Oc9EJmFVS4HwsI4cAOtVg5WB8ODOOk4wlESCFifHUDERdOROYTeZe6/dzuC/PndTfBX4hpBZOwPwC+UO6T1rOIU/R2k/GUXyZZxgVqhOKgGr1BbPrfDCJPNq8BXk5x5CV0MsCkJYiq24g+rNH4dDK49SU0ISW8mskpy9hgfE9qb0I2TL7TH9cliQd1g6IS6pmNVggsv899uegdOuL++NgQkors8PayyabXjQhGR35ZfoKNnb1wpieVaI+0pftZPqVboBfOIwTg== Received: from [212.82.98.58] by nm40.bullet.mail.ir2.yahoo.com with NNFMP; 19 Oct 2016 06:28:14 -0000 Received: from [46.228.39.107] by tm11.bullet.mail.ir2.yahoo.com with NNFMP; 19 Oct 2016 06:28:14 -0000 Received: from [127.0.0.1] by smtp144.mail.ir2.yahoo.com with NNFMP; 19 Oct 2016 06:28:14 -0000 X-Yahoo-Newman-Id: 185603.87791.bm@smtp144.mail.ir2.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: DWnnSbAVM1nc4A9OT6ghCG8PuzJ_.iIe3QSCzn7JVgNKT1L XoHZ6uKm_SAQ_BBbZlCQaZGO2zT2zKSsScYe81nU2nbJnS90begeq6FNXues pb.mJjE6xDkQ.DBN1sXQ_LYZoqIdH9Eq1Fev6CYLWlTd5ato0VXmmMr_asvb .vnGjI4GDfpoqBLog6zM_oNfoRUIPYEwJsQ67UspDXH2h_bmuMMXdmnkGSO5 UgB7dDeta.PzYbhV1fBXkUj3EQ9vwlZrvI0HEtN_tp2.0kQgKoGZSXf2gBez I7pU7ALU8PZN0fPxBfE6IW6YANXxntBQcNLoh_eudcRgVL8szEX5G8KNmExt 6vRV.dblXxVkziLqv7haMEOB2S7Nwtdn9FnX5tCjIWidFNynVrnbtL70UJYK NNBWKwo6hnO9u8PWOC4_..r_yLwiaEXxO_hkAbZ_4_Cirtu.3plfQkPwdA5u Yc9zBAz8XpRRbV_sCGLi_FUGQXf1jI2LT4wKJ4mtEdi2cIdYwdmGegByadvl _ky1VgKYZN.KwX3XvuYsZwN2TAaFqLGP2TdeZ8z7C6__Ludeb X-Yahoo-SMTP: WU.IBxeswBAAnLcBZV3tEZIK0A-- Received: by nuvolo.localdomain (Postfix, from userid 1001) id 4C1681AF109; Wed, 19 Oct 2016 08:28:12 +0200 (CEST) Date: Wed, 19 Oct 2016 08:28:12 +0200 From: Arrigo Marchiori To: Poul-Henning Kamp Cc: Arrigo Marchiori via freebsd-fs Subject: Re: Random truncated files on USB hard disk with timeouts; how to debug? Message-ID: <20161019062812.GA93031@nuvolo> References: <20161018152715.GC89691@nuvolo> <51997.1476812624@critter.freebsd.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <51997.1476812624@critter.freebsd.dk> User-Agent: Mutt/1.7.0 (2016-08-17) X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Oct 2016 06:28:23 -0000 Hello Poul, thank you for replying. On Tue, Oct 18, 2016 at 05:43:44PM +0000, Poul-Henning Kamp wrote: > -------- > In message <20161018152715.GC89691@nuvolo>, Arrigo Marchiori via freebsd-fs wri > tes: > > >The USB hard drive occasionally times out for ~10 seconds. > > When you say "hard drive" do you mean actually rotating platters > or do you mean a flash-based device ? It is a USB disk bought some years ago, that contains actually rotating platters. It has a Y-shaped cable, to get power from two ports. usbconfig(8) says: ----8<--------8<--------8<--------8<--------8<--------8<--------8<--------- ugen6.2: at usbus6, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (2mA) ----8<--------8<--------8<--------8<--------8<--------8<--------8<--------- And the relevant lines from dmesg(1) are the following (verbose boot): ----8<--------8<--------8<--------8<--------8<--------8<--------8<--------- ugen6.2: at usbus6 umass0 on uhub6 umass0: on usbus6 umass0: SCSI over Bulk-Only; quirks = 0x8100 umass0:4:0: Attached to scbus4 random: harvesting attach, 8 bytes (4 bits) from umass0 mountroot: waiting for device /dev/da0s2a... pass2 at umass-sim0 bus 0 scbus4 target 0 lun 0 pass2: Fixed Direct Access SCSI-2 device pass2: Serial Number 19CD0594134F pass2: 40.000MB/s transfers GEOM: new disk da0 da0 at umass-sim0 bus 0 scbus4 target 0 lun 0 da0: Fixed Direct Access SCSI-2 device da0: Serial Number 19CD0594134F da0: 40.000MB/s transfers da0: 238475MB (488397168 512 byte sectors) da0: quirks=0x2 da0: Delete methods: ----8<--------8<--------8<--------8<--------8<--------8<--------8<--------- I hope this helps. Best regards, -- rigo http://rigo.altervista.org