From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: libata errors Date: Mon, 13 Apr 2009 05:30:04 -0400 Message-ID: <49E3061C.4030006@pobox.com> References: <4b215b9d0904071340w16a65b5bs64f6161b6042b4f1@mail.gmail.com> <49DBC889.3080304@pobox.com> <18908.23783.745239.601473@pilspetsen.it.uu.se> <49E0DAC0.1030901@gmail.com> <49E22FD3.2010005@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:54203 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752992AbZDMJa1 (ORCPT ); Mon, 13 Apr 2009 05:30:27 -0400 In-Reply-To: <49E22FD3.2010005@kernel.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: Robert Hancock , Mikael Pettersson , Matt Grice , linux-ide@vger.kernel.org Tejun Heo wrote: > Hello, > > Robert Hancock wrote: >> I tend to doubt that the driver is doing the wrong thing. > > I've tested everything including recording and cd ripping and most of > my devices seem happy but you never know. > >> I suspect it's more that ATAPI devices on SATA are about as >> standards-compliant in general as ATAPI devices on PATA (which is to >> say not very good) and some of them break if the controller does >> something slightly differently or with different timing, which is >> quite possible in AHCI mode. >> >> Tejun was looking at some SATA analyzer traces of a few drives that were >> apparently failing consistently on AHCI. Tejun, did you get anywhere >> with this? > > I need to take a deeper look at that but in general I couldn't find > anything standing out. After a series of ATAPI changes (IIRC, the DMA > padding change was the last thing), most ATAPI bug reports got > resolved and I'm not getting many ATAPI failure bug reports other than > recent ahci ones anymore. I'm not sure whethre it indicates that we > finally got it right or something else tho. > > Jeff, what kind of failure are you seeing? Hardware: SATA DVD-ROM/CD-RW devices, AHCI, ICH$foo Reading and writing data CDs and DVDs works fine. Ripping audio CDs using gRip application leads to timeouts almost immediately. Jeff