Date: Wed, 29 Sep 2010 17:43:04 +0100 From: Martin Simmons <martin@lispworks.com> To: freebsd-fs@freebsd.org Subject: Re: zfs+smb checksum errors Message-ID: <201009291643.o8TGh4hx016649@higson.cam.lispworks.com> In-Reply-To: <707981.30589.qm@web110702.mail.gq1.yahoo.com> (message from Scott Johnson on Tue, 28 Sep 2010 17:01:47 -0700 (PDT)) References: <707981.30589.qm@web110702.mail.gq1.yahoo.com>
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>>>>> On Tue, 28 Sep 2010 17:01:47 -0700 (PDT), Scott Johnson said: > > 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. Or maybe it is some other hardware problem, such as the disk controller or RAM? __Martin
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