From: Mark Lord <liml@rtr.ca>
To: Tejun Heo <tj@kernel.org>
Cc: Robert Hancock <hancockrwd@gmail.com>,
Jeff Garzik <jeff@garzik.org>, Chuck Ebbert <cebbert@redhat.com>,
linux-ide@vger.kernel.org
Subject: Re: libata timeouts when stressing a Samsung HDD
Date: Thu, 19 Feb 2009 10:27:07 -0500 [thread overview]
Message-ID: <499D7A4B.5010804@rtr.ca> (raw)
In-Reply-To: <4993A57D.6010107@gmail.com>
>ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
>ata1.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0
> res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
>ata1.00: status: { DRDY }
>>> I wonder if it's just a case of too short a timeout on the cache flushes?
..
> However, in this case the drive is not reporting Busy status at the
> timeout, which suggests maybe an interrupt got lost or something. (Could
> be still the drive's fault.)
..
If I recall correctly, The reported shadow register contents are bogus
when a timeout occurs. So we don't actually know what the drive state was.
Or do we, Tejun?
next prev parent reply other threads:[~2009-02-19 15:27 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-02 21:40 libata timeouts when stressing a Samsung HDD Chuck Ebbert
2009-02-11 1:30 ` Tejun Heo
2009-02-11 4:08 ` Mark Lord
2009-02-11 20:29 ` Chuck Ebbert
2009-02-11 22:03 ` Mark Lord
2009-02-11 22:11 ` Jeff Garzik
2009-02-11 22:29 ` Mark Lord
2009-02-11 22:54 ` Chuck Ebbert
2009-02-12 16:10 ` Mark Lord
2009-02-12 16:13 ` Mark Lord
2009-02-16 3:12 ` Tejun Heo
2009-02-16 21:30 ` Chuck Ebbert
2009-02-19 6:21 ` Tejun Heo
2009-02-19 16:41 ` Greg Freemyer
2009-02-20 0:33 ` Tejun Heo
2009-02-12 4:28 ` Robert Hancock
2009-02-19 15:27 ` Mark Lord [this message]
2009-02-20 0:32 ` Tejun Heo
2009-02-20 2:52 ` Robert Hancock
2009-02-20 3:26 ` Tejun Heo
2009-03-01 19:31 ` Robert Hancock
2009-03-01 20:28 ` Alan Cox
2009-02-11 20:24 ` Chuck Ebbert
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