From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: libata interface fatal error Date: Thu, 24 May 2007 16:53:02 +0200 Message-ID: <4655A6CE.2010300@gmail.com> References: <4655923E.5000409@effenberger.org> <46559713.9070201@gmail.com> <46559C62.2040509@effenberger.org> <46559F5B.4090700@gmail.com> <4655A588.40500@effenberger.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Return-path: Received: from py-out-1112.google.com ([64.233.166.181]:60231 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750807AbXEXOxQ (ORCPT ); Thu, 24 May 2007 10:53:16 -0400 Received: by py-out-1112.google.com with SMTP id a73so899857pye for ; Thu, 24 May 2007 07:53:16 -0700 (PDT) In-Reply-To: <4655A588.40500@effenberger.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Florian Effenberger Cc: jgarzik@pobox.com, linux-ide@vger.kernel.org Florian Effenberger wrote: > Hi, > >> Data integrity wise there should be no problem but your error rate is >> pretty high and eventually will make libata turn off NCQ and/or speed >> down PHY speed. > > switching ports is not easy. Both on-board SATA controllers are being > used, and the error seems to occur on all ports. Hmmmm... >> Yeap, your data is safe. With timeouts, data transfer speed can be much >> lower tho. It definitely seems something is wrong with your hardware >> setup. > > I will try to use another test disk. Right now we use different models > of Western Digital "RAID edition". > > Any other debug information I could gather? If you let the system run, libata will turn off NCQ and/or lower PHY speed to 1.5Gbps. Do errors disappear after that happens? -- tejun