From owner-freebsd-current@FreeBSD.ORG Thu Apr 16 17:39:33 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 EE2B71065672 for ; Thu, 16 Apr 2009 17:39:33 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id C03088FC2F for ; Thu, 16 Apr 2009 17:39:33 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id 5717946B23; Thu, 16 Apr 2009 13:39:33 -0400 (EDT) Received: from jhbbsd.hudson-trading.com (unknown [209.249.190.8]) by bigwig.baldwin.cx (Postfix) with ESMTPA id 48E078A01A; Thu, 16 Apr 2009 13:39:32 -0400 (EDT) From: John Baldwin To: freebsd-current@freebsd.org Date: Thu, 16 Apr 2009 13:27:46 -0400 User-Agent: KMail/1.9.7 References: <49BD117B.2080706@163.com> <200904161145.38687.jhb@freebsd.org> <20090416161851.GC1605@plebeian.afflictions.org> In-Reply-To: <20090416161851.GC1605@plebeian.afflictions.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200904161327.46509.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Thu, 16 Apr 2009 13:39:32 -0400 (EDT) X-Virus-Scanned: clamav-milter 0.95 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=0.1 required=4.2 tests=RDNS_NONE autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: Damian Gerow 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 17:39:35 -0000 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. -- John Baldwin