From: Tejun Heo <htejun@gmail.com>
To: benh@kernel.crashing.org
Cc: "linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
Jeff Garzik <jeff@garzik.org>
Subject: Re: T61 SATA error in log
Date: Thu, 27 Sep 2007 16:50:17 -0700 [thread overview]
Message-ID: <46FC41B9.9050502@gmail.com> (raw)
In-Reply-To: <1190936161.6158.42.camel@pasglop>
Benjamin Herrenschmidt wrote:
> Allright. What is happening exactly ? A fluke on the link ?
The drive is sending spurious completions of NCQ commands (ie. it's
sending completions for commands which are not pending). We believe
this happens due to firmware bugs and it matched the reality pretty well
(drives with spurious completions usually had other NCQ related
problems) but recently too many new drives are causing this problem. I
have no idea what's going on. I guess it's about time to contact
harddrive vendors.
>> benh@pasglop:~/kernels/linux-2.6$ sudo hdparm -I /dev/sda
>
> /dev/sda:
>
> ATA device, with non-removable media
> Model Number: ST9120822AS
> Serial Number: 5LZ50702
> Firmware Revision: 3.CLF
Will add to blacklist. Thanks.
--
tejun
prev parent reply other threads:[~2007-09-27 23:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-27 7:21 T61 SATA error in log Benjamin Herrenschmidt
2007-09-27 20:35 ` Tejun Heo
2007-09-27 23:36 ` Benjamin Herrenschmidt
2007-09-27 23:50 ` Tejun Heo [this message]
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