From owner-freebsd-fs@FreeBSD.ORG Wed Sep 29 00:01:48 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5D560106564A for ; Wed, 29 Sep 2010 00:01:48 +0000 (UTC) (envelope-from scottj75074@yahoo.com) Received: from web110702.mail.gq1.yahoo.com (web110702.mail.gq1.yahoo.com [67.195.13.209]) by mx1.freebsd.org (Postfix) with SMTP id 313388FC15 for ; Wed, 29 Sep 2010 00:01:47 +0000 (UTC) Received: (qmail 32029 invoked by uid 60001); 29 Sep 2010 00:01:47 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1285718507; bh=s/EOty7iIA36f4lTrWCyHwF+ttMCv0QGH65S0rCsXtc=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=Hq1AYeX3c0EfU2w3XnDlHWHf7IQjl0fKVnRCUmNtNAL3iFOJV3jEfBv/xVzeqprZgfFN49R3BqTkda+JtNEnjYr9b0NSJVAxfer1ZVaTvoCNUmXh7AUxAzGd2xX0jVL28s4IFyvmh/j8nQSMPCNQtquuqV22/F6cJ8YFyxsE6oc= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=tW2NDrhQZgDMJtLXORuswSLB90F0IaB8b0EbLrBoFdgclrxpkC98GKvQEXOLbR5uT26nneCZyjIpnIIK68OdPLur336giYRp8D4c9Sw0wGosMGIooSWmulIdy+08XLLwF5WNdNDB2nEj+GbMdnOo4V3xYVKuxzpljqq6ZZghY/E=; Message-ID: <707981.30589.qm@web110702.mail.gq1.yahoo.com> X-YMail-OSG: ta4L74QVM1lbp3oOg83p_MXvzmUNEE.MAGOTy9PqB_HjHYo enSIYlcvnHIN6GZjbERiSkg3KFj1IT5PmxWNc16g1GJtUcslJx0OPL_yhxMJ MlcJYFk0IGIL_FWASOfQGHPuVeJAOtlOMVagA22eJcgPrvJXyFIi0tQ3YGPG 4YixBXNlRrlVy0m6fgnQ23kxHiHf0hcqCB0hVZmn1bt6Ni7jCphPLbBdgJlV wTfae6ItMXy.9O5L2feclM4J8VjsJTJh.OsdqrCYwJ29XvP1T.rGqhBJBGZ9 UJabzBSNbCRYehAh1aGuQb748Y7INisNymzYqYAHI97O3oZ4versM2w-- Received: from [99.189.91.206] by web110702.mail.gq1.yahoo.com via HTTP; Tue, 28 Sep 2010 17:01:47 PDT X-Mailer: YahooMailRC/497 YahooMailWebService/0.8.105.279950 Date: Tue, 28 Sep 2010 17:01:47 -0700 (PDT) From: Scott Johnson To: freebsd-fs@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: zfs+smb checksum errors X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Sep 2010 00:01:48 -0000 I've been running FBSD 8.0-rel and now 8.1-rel for 6 months or so, with a 4 disk raidz, weekly scrubs. Never saw a checksum error until last week when I got about 5 during operation, followed by another 10 or so on the next scrub. They all occurred when I was accessing the server through SMB from my WinXP desktop. I've been doing this for months, transferring files to and from regularly, but this was the first time I'd been doing simultaneous heavy reading & writing. I was running Imgburn on WinXP, creating an iso file from folders. Both source files and destination iso file were on the same SMB share on the FBSD server. After all the checksum errors, there was 1 unrecoverable error, on one of the destination iso files. There are 0 read errors, 0 write errors, and 0 new SMART errors on the 4 disks. The checksum errors were spread roughly equally across the 4 disks. All of which leads me to believe this is a software problem at the filesystem level. What is my next move for diagnosing and eventually resolving this?