From owner-freebsd-stable@FreeBSD.ORG Tue Feb 14 17:17:41 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 03FC9106566C for ; Tue, 14 Feb 2012 17:17:41 +0000 (UTC) (envelope-from h.schmalzbauer@omnilan.de) Received: from host.omnilan.net (s1.omnilan.net [62.245.232.135]) by mx1.freebsd.org (Postfix) with ESMTP id 661F28FC14 for ; Tue, 14 Feb 2012 17:17:39 +0000 (UTC) Received: from titan.wdn.omnilan.net (titan.lo4.wdn.omnilan.net [172.21.1.150]) (authenticated bits=0) by host.omnilan.net (8.13.8/8.13.8) with ESMTP id q1EHHRnL005218 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 14 Feb 2012 18:17:27 +0100 (CET) (envelope-from h.schmalzbauer@omnilan.de) X-Authentication-Warning: smtp.dmz.omnisec.de: Host titan.lo4.wdn.omnilan.net [172.21.1.150] claimed to be titan.wdn.omnilan.net Message-ID: <4F3A971F.9040407@omnilan.de> Date: Tue, 14 Feb 2012 18:17:19 +0100 From: Harald Schmalzbauer Organization: OmniLAN User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; de-DE; rv:1.9.2.8) Gecko/20100906 Lightning/1.0b2 Thunderbird/3.1.2 MIME-Version: 1.0 To: Jeremy Chadwick References: <20120214091909.GP2010@equilibrium.bsdes.net> <20120214100513.GA94501@icarus.home.lan> <20120214135435.GQ2010@equilibrium.bsdes.net> <20120214141601.GA98986@icarus.home.lan> <4F3A83DE.3000200@ambtec.de> <20120214165029.GA1852@icarus.home.lan> In-Reply-To: <20120214165029.GA1852@icarus.home.lan> X-Enigmail-Version: 1.1.2 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig5467461311D5A8AAB5A9CABE" Cc: freebsd-stable@freebsd.org, Claudius Herder Subject: Re: problems with AHCI on FreeBSD 8.2 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Feb 2012 17:17:41 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig5467461311D5A8AAB5A9CABE Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable schrieb Jeremy Chadwick am 14.02.2012 17:50 (localtime): > On Tue, Feb 14, 2012 at 04:55:10PM +0100, Claudius Herder wrote: >> Hello, >> >> I have got a quite similar problem with AHCI on FreeBSD 8.2 and it sti= ll >> persists on FreeBSD 9.0 release. >> >> Switching from ahci to ataahci resolved the problem for me too. >> >> I'm using gmirror for swap, system is on a zpool and the problem first= >> occurred during a zpool scrub, but it is easily reproducible with dd. >> >> The timeouts only occur when writing to disks, dd if=3D/dev/ada{0|1} >> of=3D/dev/null is not an issue. >> Sometimes I need to power off the server because after a reboot one di= sk >> is still missing. >> >> I really would like to help in this issue, so let me know if you need >> any more information. > I find it interesting that, at least so far, the only people reporting > problems of this type with the ahci.ko driver are people using Samsung > disks. The only difference is that your models are F1s while the OPs > are F2s. I saw such timeouts long ago and mav@ had a look at my postings and he mentioned it could be a NCQ problem. I suspected the disks firmware. I never tracked it down further, because after replacing the Samsung (F3 in that case) disks with hitachi ones solved all my problems and gave a big performance kick as well (with zfs). You can find the discussion here: http://lists.freebsd.org/pipermail/freebsd-stable/2010-February/055374.ht= ml JFI -Harry --------------enig5467461311D5A8AAB5A9CABE Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk86lycACgkQLDqVQ9VXb8jppgCeIimntlGuAZmneF8SUrZ74yVS 9isAnixsNUzhGIEmwfqrIteeFbo39Mru =VO7E -----END PGP SIGNATURE----- --------------enig5467461311D5A8AAB5A9CABE--