From owner-freebsd-current@FreeBSD.ORG Thu Apr 16 18:24:58 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 29451106566B for ; Thu, 16 Apr 2009 18:24:58 +0000 (UTC) (envelope-from shuvaev@physik.uni-wuerzburg.de) Received: from mailrelay.rz.uni-wuerzburg.de (mailrelay.rz.uni-wuerzburg.de [132.187.3.28]) by mx1.freebsd.org (Postfix) with ESMTP id A2F828FC1C for ; Thu, 16 Apr 2009 18:24:57 +0000 (UTC) (envelope-from shuvaev@physik.uni-wuerzburg.de) Received: from virusscan.mail (localhost [127.0.0.1]) by mailrelay.mail (Postfix) with ESMTP id 39C88A07A4; Thu, 16 Apr 2009 20:24:56 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by virusscan.mail (Postfix) with ESMTP id 2DB8AA07A3; Thu, 16 Apr 2009 20:24:56 +0200 (CEST) Received: from mail.physik.uni-wuerzburg.de (wthp192.physik.uni-wuerzburg.de [132.187.40.192]) by mailmaster.uni-wuerzburg.de (Postfix) with ESMTP id 1AE5FA07A2; Thu, 16 Apr 2009 20:24:56 +0200 (CEST) Received: from wep4035 ([132.187.37.35]) by mail.physik.uni-wuerzburg.de (Lotus Domino Release 8.0.2HF443) with ESMTP id 2009041620245528-7765 ; Thu, 16 Apr 2009 20:24:55 +0200 Received: by wep4035 (sSMTP sendmail emulation); Thu, 16 Apr 2009 20:24:55 +0200 Date: Thu, 16 Apr 2009 20:24:55 +0200 From: Alexey Shuvaev To: John Baldwin Message-ID: <20090416182455.GA60341@wep4035.physik.uni-wuerzburg.de> References: <49BD117B.2080706@163.com> <200904161145.38687.jhb@freebsd.org> <20090416161851.GC1605@plebeian.afflictions.org> <200904161327.46509.jhb@freebsd.org> MIME-Version: 1.0 In-Reply-To: <200904161327.46509.jhb@freebsd.org> Organization: Universitaet Wuerzburg User-Agent: Mutt/1.5.18 (2008-05-17) X-MIMETrack: Itemize by SMTP Server on domino1/uni-wuerzburg(Release 8.0.2HF443 | November 25, 2008) at 04/16/2009 08:24:55 PM, Serialize by Router on domino1/uni-wuerzburg(Release 8.0.2HF443 | November 25, 2008) at 04/16/2009 08:24:55 PM, Serialize complete at 04/16/2009 08:24:55 PM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Virus-Scanned: by amavisd-new at uni-wuerzburg.de Cc: Damian Gerow , freebsd-current@freebsd.org Subject: Re: ZFS checksum errors on umass(4) insertion X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Apr 2009 18:24:58 -0000 On Thu, Apr 16, 2009 at 01:27:46PM -0400, John Baldwin wrote: > On Thursday 16 April 2009 12:18:51 pm Damian Gerow wrote: > > John Baldwin wrote: > > : > I'm at a bit of a loss as to what to test next, other than checking for > an > > : > increased number of checksum errors after unloading umass. However, I'm > not > > : > convinced this is going to highlight the actual problem. I'm all ears > as to > > : > what to test for at this point, as I'm running out of ideas. > > : > > > : > A little less wordy: help? > > : > > : Do your umass(4) drives use ZFS or some other filesystem? > > > > Something in the FAT line, likely FAT32. I use ZFS for everything but my > > root filesystem (/usr, /var, /tmp, /home, and a few other non-default > > mountpoints), but I stick with FAT for removable devices. > > > > It's probably worth pointing out that I don't need to mount the filesystem > > to trigger the issue. > > Try http://www.FreeBSD.org/~jhb/patches/dma_sg.patch please. > You mean dma_pg.patch? ^^^^^^^^^^^^^ Alexey.