Date: Thu, 26 Mar 2009 09:02:15 +0000 (GMT) From: "Mark Powell" <M.S.Powell@salford.ac.uk> To: Alexey Shuvaev <shuvaev@physik.uni-wuerzburg.de> Cc: FreeBSD Current <freebsd-current@freebsd.org>, ticso@cicely.de, Mark Powell <M.S.Powell@salford.ac.uk> Subject: Re: Apparently spurious ZFS CRC errors (was Re: ZFS data error without reasons) Message-ID: <20090326090147.D87213@rust.salford.ac.uk> In-Reply-To: <20090325203558.GA4533@wep4035.physik.uni-wuerzburg.de> References: <20090320102824.W75873@rust.salford.ac.uk> <20090320152737.D641@rust.salford.ac.uk> <20090325105613.55624rkkgf2xkr6s@webmail.leidinger.net> <20090325103721.G67233@rust.salford.ac.uk> <20090325135528.21416hzpozpjst8g@webmail.leidinger.net> <20090325125930.U73916@rust.salford.ac.uk> <20090325152128.2389990h7v6a02co@webmail.leidinger.net> <20090325152940.GB16409@cicely7.cicely.de> <20090325180054.L87213@rust.salford.ac.uk> <20090325183831.GD16409@cicely7.cicely.de> <20090325203558.GA4533@wep4035.physik.uni-wuerzburg.de>
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On Wed, 25 Mar 2009, Alexey Shuvaev wrote: > I don't use zfs, just ufs2 + soft updates, but I see sometimes rather > heavy data corruption (most often on / filesystem). > No kernel messages, I can shut down the system successfully just > to find the remnants of filesystems on the next boot. > It doesn't happen often, I think compiling ports in a jail + some > activity in the host increase the probability of a failure. > > The drive is: > ATA channel 3: > Master: ad6 <WDC WD5000AAKS-00C8A0/12.01C02> SATA revision 2.x > > hw.ata.wc=1 (default) Have you tried turning WC off to see if it improves matters? Cheers. -- Mark Powell - UNIX System Administrator - The University of Salford Information & Learning Services, Clifford Whitworth Building, Salford University, Manchester, M5 4WT, UK. Tel: +44 161 295 6843 Fax: +44 161 295 5888 www.pgp.com for PGP key
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