[dm-devel] HPA unlock during partition scan of RAID components

[Phillip Susi]

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On 11/04/2011 05:50 PM, Tejun Heo wrote:
>> So the first machine does not set an HPA at all, you format the 
>> drive, then move it to a machine whose bios blindly adds an HPA
>> to the drive? A bios certainly shouldn't be blindly adding an HPA
>> to an already formatted drive that did not have one before.  If
>> it does, why is that our problem?
> 
> Sigh, yes, it is as much our problem as any other HPA related
> issues and it can be much more common because it can happen with
> hot plugging/swapping.

That would also break a Windows drive.  Are there any such biosen in
the wild?  They should only add an HPA to a drive that is unformatted.

In other words, if you had a drive with Windows on it, and
transplanted it into such a broken machine, Windows would no longer be
able to mount it.  I can't imagine there are such broken biosen in the
wild, and if there are, we can at least point and say "see, it breaks
when you do that with windows too so it is the fault of the bios, not
Linux".
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