linux-kernel - Re: sata NCQ blacklist entry

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Message-id: <47339C88.9050300@shaw.ca>
Date:	Thu, 08 Nov 2007 17:32:24 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	Luca Tettamanti <kronos.it@...il.com>
Cc:	Tejun Heo <htejun@...il.com>, jeff@...zik.org,
	linux-kernel@...r.kernel.org,
	IDE/ATA development list <linux-ide@...r.kernel.org>
Subject: Re: sata NCQ blacklist entry

Luca Tettamanti wrote:
> On Nov 7, 2007 1:55 PM, Tejun Heo <htejun@...il.com> wrote:
>> Florian La Roche wrote:
>>> Hello all,
>>>
>>> I've taking email addresses from the last NCQ blacklist changes going
>>> into the kernel.
>>> This Fujitsu drive also gives me spurious command completions. Detailed
>>> output also available at https://bugzilla.redhat.com/show_bug.cgi?id=366181.
>>>
>>> Let me know if you need more info or anything else.
>>>
>>> --- drivers/ata/libata-core.c
>>> +++ drivers/ata/libata-core.c
>>> @@ -4222,6 +4222,7 @@
>>>       { "WDC WD740ADFD-00NLR1", NULL,         ATA_HORKAGE_NONCQ, },
>>>       { "WDC WD3200AAJS-00RYA0", "12.01B01",  ATA_HORKAGE_NONCQ, },
>>>       { "FUJITSU MHV2080BH",  "00840028",     ATA_HORKAGE_NONCQ, },
>>> +     { "FUJITSU MHW2160BJ G2",       NULL,           ATA_HORKAGE_NONCQ },
>>>       { "ST9120822AS",        "3.CLF",        ATA_HORKAGE_NONCQ, },
>>>       { "ST9160821AS",        "3.CLF",        ATA_HORKAGE_NONCQ, },
>>>       { "ST9160821AS",        "3.ALD",        ATA_HORKAGE_NONCQ, },
>> Thanks.  We're currently trying to find out what's actually going on
>> with all these drives.  At first, drives which got blacklisted aren't
>> many and made sense (had other problems with NCQ, etc..) but with new
>> generation drives from many vendors showing the same symptom, we aren't
>> too sure now.
> 
> Is there a way to tell whether Windows is using NCQ or not? I checked
> the system log (or whatever it's called) on my notebook and is clean
> but I'm not sure it's using NCQ (I don't even know if it'd log
> spurious completions somewhere).

Which driver is installed for the SATA controller in Windows, the 
chipset-manufacturer-provided AHCI driver or the default Microsoft 
driver? You'd need the AHCI driver installed for NCQ to be used.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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