From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Effenberger Subject: Re: libata interface fatal error Date: Thu, 14 Jun 2007 17:12:27 +0200 Message-ID: <46715ADB.4020202@effenberger.org> References: <46580134.7010107@effenberger.org> <465BEF50.8050207@gmail.com> <466725E5.9030405@effenberger.org> <4667D4F5.1060302@gmail.com> <466FC901.4060907@effenberger.org> <46710DDC.1030900@gmail.com> <467122B8.1090206@effenberger.org> <467133D7.7070000@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from garfield.effenberger.org ([85.214.43.221]:33474 "EHLO garfield.effenberger.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751924AbXFNPMb (ORCPT ); Thu, 14 Jun 2007 11:12:31 -0400 In-Reply-To: <467133D7.7070000@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: linux-ide@vger.kernel.org, jeff@garzik.org Hi Tejun, > Okay, ich8. I don't think the chipset is at fault here and you have a > lot of disks. My primary suspect is power supply problem but things > like this are hard to prove. With the merged speed down fix, libata > will do the right thing after a few errors, so ignoring the problem > wouldn't be a too bad idea. If you're curious, you can try to connect > drives to different SATA ports and power lanes and see whether errors > follow the disk, port or power lane. exactly, should be four disks in the machine. What power supply would you recommend for this type of disks? I think we got a 450W Enermax, IIRC. What do you mean by "merged speed down fix"? Is your fix for the speed down logic implemented in the current kernel, so I don't have to patch anymore (except when I want to force 1.5Gbps right from the beginning)? All SATA parts are used, so reconnecting is not an option. But I can try to switch the power supply (lanes). Thanks for all your kind help, that is much appreciated! Florian