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Message-ID: <46E0A253.7060803@gmail.com>
Date: Fri, 07 Sep 2007 09:58:59 +0900
From: Tejun Heo <htejun@gmail.com>
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To: Mark Lord <liml@rtr.ca>
CC: Andrew Morton <akpm@linux-foundation.org>, michal.k.k.piotrowski@gmail.com,
       bryan@arbores.ca, linux-kernel@vger.kernel.org,
       linux-ide@vger.kernel.org
Subject: Re: Stardom SATA HSM violation
References: <46CFA08E.6090604@arbores.ca>	<6bffcb0e0708261610g10d9c59ck5789fac6feca9f42@mail.gmail.com>	<46DBCB6C.8080206@gmail.com> <20070905095327.6277d054.akpm@linux-foundation.org> <46DEE617.4050004@rtr.ca>
In-Reply-To: <46DEE617.4050004@rtr.ca>
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Hello,

Mark Lord wrote:
> I reported a very similar bug back a few releases ago.
> Anyone who wants to try it themselves, can do this with hdparm-7.7 (from
> sourceforge):
> 
>    hdparm --drq-hsm-error /dev/sda
> 
> Whether or not it hangs the machine does depend upon exactly which SATA
> LLD is used,
> and what model/revision of drive is installed.  But if it hangs for you
> (eg. Tejun),
> then you now have a way to reproduce a HSM error "on demand" for
> testing.  :)

Neat.  Is this the FIFO-draining issue?

Thanks.

-- 
tejun
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