linux-kernel - Re: Linux 2.6.24-rc7

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Message-ID: <478AA56F.9020506@gmail.com>
Date:	Mon, 14 Jan 2008 08:57:35 +0900
From:	Tejun Heo <htejun@...il.com>
To:	"J.A. Magallón" <jamagallon@....com>
CC:	"Linux-Kernel, " <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.24-rc7

J.A. Magallón wrote:
> I'm still pending to pysically remove the disks (or at least unplug the
> cable...), but I have realized a cusious thing: after some errors, the
> kernel is lowering the disk speed (UDMA/133, then 100, then 33):

That's the standard error handling behavior.  Timeouts are likely to
indicate transmission problems so libata puts it into slower gear.

> Perhaps this gives a clue.
> Or I just had bad luck and 2 of my 4 disks broke at the same time.

As I said, the first thing I would try is to connect the drives to a
separate PSU and re-seating cables as you're seeing problems on two
drives simultaneously.

-- 
tejun
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