Thanks a lot! It seems WD built yet another unordinary drive.

Tejun Heo wrote:
> Tejun Heo wrote:
>>>>>         LBA, IORDY(can be disabled)
>>>>>         Queue depth: 1
>> Hmm... Here it is.  Interesting.  The drive is reporting queue depth of
>> 1.  Interesting.  This is the first time I see this.  The drive is
>> telling libata that it supports NCQ and the max queue depth is 1 and
>> libata configures it accordingly.  I'll ask wd about it.
> Okay, confirmed.  The drive does support NCQ but have queue depth of 1,
> so nothing's wrong with your setup.  That's how the drive is built.
> Thanks.
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