Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757397AbXLNPQq (ORCPT ); Fri, 14 Dec 2007 10:16:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756588AbXLNPQY (ORCPT ); Fri, 14 Dec 2007 10:16:24 -0500 Received: from rv-out-0910.google.com ([209.85.198.190]:20892 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756539AbXLNPQX (ORCPT ); Fri, 14 Dec 2007 10:16:23 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:x-enigmail-version:content-type:content-transfer-encoding; b=HHxgUWYEpB+12r4lX1GjFcuOpVnl8Dp/QW8+e9d8/iNQMWk9TUNWmYUlh6TQoDDCTQwXJtPdFL6Pi7B5Di/Kqos0QwzJJn6qFtUF4MnRCeJii8hrIKvVhIBAlHRz5W4pk8kSyOpFtM18Ol2/3hpigGiUTXJxIgXYzRxTMXzWHFs= Message-ID: <47629E40.5020007@gmail.com> Date: Sat, 15 Dec 2007 00:16:16 +0900 From: Tejun Heo User-Agent: Thunderbird 2.0.0.6 (X11/20070801) MIME-Version: 1.0 To: Christoph Anton Mitterer CC: linux-kernel@vger.kernel.org Subject: Re: Strange ATA problems References: <1197591699.3453.38.camel@fermat.scientia.net> In-Reply-To: <1197591699.3453.38.camel@fermat.scientia.net> X-Enigmail-Version: 0.95.3 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1037 Lines: 24 Christoph Anton Mitterer wrote: > I have a CD/DVD drive connected via USB,... and while woking the system > suddenly freezed (at least those processes that tried to access the > hardsisk). Do you have log with timestamp? It's difficult to tell what's going on without knowing what happened when. Also, please post the result of 'cat /proc/interrupts'. If your USB cdrom is bus powered and you yanked it, it could have caused fluctuation in power which in turn can cause disruption on serial ATA bus leading to transmission error and timeouts. There are other possibilities but this kind of thing does happen often with SATA. Those highspeed low-voltage serial links are very susceptible to interferences. As long as EH recovered it properly, there's nothing to worry about. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/