From owner-freebsd-questions@FreeBSD.ORG Wed May 10 12:45:30 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 028D116A40A for ; Wed, 10 May 2006 12:45:30 +0000 (UTC) (envelope-from arsptr@optusnet.com.au) Received: from mail13.syd.optusnet.com.au (mail13.syd.optusnet.com.au [211.29.132.194]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4BB9A43D62 for ; Wed, 10 May 2006 12:45:17 +0000 (GMT) (envelope-from arsptr@optusnet.com.au) Received: from [192.168.1.3] (c211-30-182-34.rivrw1.nsw.optusnet.com.au [211.30.182.34]) by mail13.syd.optusnet.com.au (8.12.11/8.12.11) with ESMTP id k4ACjGav021124 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NO) for ; Wed, 10 May 2006 22:45:16 +1000 Mime-Version: 1.0 (Apple Message framework v749.3) In-Reply-To: References: Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="Apple-Mail-1--693297638" Message-Id: <3655B84C-03FA-454B-A601-72DCEE8AE4E7@optusnet.com.au> Content-Transfer-Encoding: 7bit From: Alastair Rankine Date: Wed, 10 May 2006 22:45:10 +1000 To: freebsd-questions@freebsd.org X-Pgp-Agent: GPGMail 1.1.1 (Tiger) X-Gpgmail-State: signed X-Mailer: Apple Mail (2.749.3) Subject: Re: Filesystem corruption when drives are mirrored, but not otherwise X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 May 2006 12:45:30 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --Apple-Mail-1--693297638 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed On 02/05/2006, at 10:18 PM, I wrote: > The story is this: two identical WD 250GB SATA drives, attached to > a Promise FastTrak S150 TX2plus. > > The drives work fine independently (ie non-mirrored). But when I > mirror them using GEOM, I get filesystem corruption (see below for > example fsck output). It seems that this was caused by the (infamous) problem when softupdates and write caching are both enabled. Disabling write caching seems to have fixed the problem. Unfortunately the disk write performance is woeful. There must be a better way surely? Is anyone using GEOM mirrors on ATA disks with softupdates and write caching? If so, what's your secret? --Apple-Mail-1--693297638 content-type: application/pgp-signature; x-mac-type=70674453; name=PGP.sig content-description: This is a digitally signed message part content-disposition: inline; filename=PGP.sig content-transfer-encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (Darwin) iEYEARECAAYFAkRh4FoACgkQ9jqa2eRLIcdZsACfdUP5mKACvpBhvl+Nzzk0sgVT qDEAoNg0P5zaATPl1Iq7IPexdTDV9KkJ =cU7m -----END PGP SIGNATURE----- --Apple-Mail-1--693297638--