From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tim Small Subject: Re: [smartmontools-support] SATA drive reset/disable events on ICH7 ata_piix when polling SMART info Date: Sat, 06 Feb 2010 22:22:31 +0000 Message-ID: <4B6DEBA7.2030505@buttersideup.com> References: <4B6C2635.105@buttersideup.com> <4B6C2BC8.7000609@buttersideup.com> <4B6C91F3.5090809@teksavvy.com> <4B6CE473.7060901@kernel.org> <4B6D8A12.70200@buttersideup.com> <4B6DA74C.2040007@teksavvy.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from relay1.allsecurenet.com ([63.246.152.102]:54206 "EHLO relay1.allsecurenet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755349Ab0BFWXO (ORCPT ); Sat, 6 Feb 2010 17:23:14 -0500 In-Reply-To: <4B6DA74C.2040007@teksavvy.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mark Lord Cc: Tejun Heo , Justin Piszcz , "smartmontools-support@lists.sourceforge.net" , linux-ide@vger.kernel.org Mark Lord wrote: > My theory on the problem when I first had it here, was that doing > a FLUSH_CACHE[_EXT] before any PIO command (eg. SMART) should prevent > the problem. This was never explored further (by me or others). > Would using "option libata force=pio4" be a simple way to start to test this hypothesis? Ta, Tim.