From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Vandiver Subject: Re: Intermittent SATA failures ("link offline, clearing class 1 to NONE") Date: Mon, 21 Dec 2009 14:13:59 -0500 Message-ID: <1261422681-sup-4043@utwig> References: <1258054583-sup-4108@utwig> <4B14B207.9010208@kernel.org> <1259652273-sup-686@utwig> <4B14D003.30407@kernel.org> <4B14D454.7010300@kernel.org> <1259704924-sup-4007@utwig> <4B15C64E.7090106@kernel.org> <1259774491-sup-9212@utwig> <4B17042B.5070400@kernel.org> <4B17095C.50204@kernel.org> <1261167192-sup-3861@utwig> <4B2EFE87.6000206@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Return-path: Received: from chmrr.net ([209.67.253.66]:58155 "EHLO utwig.chmrr.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757050AbZLUTOA (ORCPT ); Mon, 21 Dec 2009 14:14:00 -0500 In-reply-to: <4B2EFE87.6000206@kernel.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: linux-ide At Sun Dec 20 23:50:15 -0500 2009, Tejun Heo wrote: > Wow, that's unexpected. Can you please post log of this with the > debugging patch applied? I've only been able to replicate this once, and I didn't manage to save its dmesg, sadly. I'll see if I can get it to crop up again, though. > Hmmm... interesting. So, the boot time probing is somehow different > from probing initiated by manual scan (they both use hardreset). Can > you please post log of manual scans with debug patch applied? The output of a manual scan is: [ 255.236938] ata1.00: hard resetting link [ 255.465422] ata1.00: XXX debounce start, SStatus=123 [ 257.551239] ata1.00: XXX debounce done, SStatus=123, DET stable for 2090 msecs [ 257.551246] ata1.01: hard resetting link [ 257.780776] ata1.01: XXX debounce start, SStatus=123 [ 259.866589] ata1.01: XXX debounce done, SStatus=123, DET stable for 2090 msecs [ 260.026328] ata1.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 260.026342] ata1.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 260.087511] ata1.00: configured for UDMA/133 [ 260.127736] ata1.01: configured for UDMA/133 [ 260.127740] ata1: EH complete - Alex -- Networking -- only one letter away from not working