From: Tejun Heo <htejun@gmail.com>
To: Christoph Anton Mitterer <calestyo@scientia.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Strange ATA problems
Date: Sat, 15 Dec 2007 00:16:16 +0900 [thread overview]
Message-ID: <47629E40.5020007@gmail.com> (raw)
In-Reply-To: <1197591699.3453.38.camel@fermat.scientia.net>
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
next prev parent reply other threads:[~2007-12-14 15:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-14 0:21 Strange ATA problems Christoph Anton Mitterer
2007-12-14 15:16 ` Tejun Heo [this message]
2007-12-14 15:44 ` Christoph Anton Mitterer
2007-12-14 15:49 ` Tejun Heo
2007-12-15 1:49 ` Robert Hancock
2007-12-15 3:41 ` Christoph Anton Mitterer
2007-12-14 22:24 ` Alan Cox
2007-12-15 1:39 ` Christoph Anton Mitterer
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