Re: [PATCHSET] block,scsi,libata: implement alt_size

From: Tejun Heo
Date: Wed Apr 29 2009 - 21:51:57 EST


Hello,

Jeff Garzik wrote:
> <shrug> I suppose...
>
> It just seems like a nasty hack, but unfortunately I don't see
> anyone stepping up to do it properly -- with a DM device
> automatically layered on top that splits the device into separate
> regions: one block device for the 'regular' area, and one for the
> HPA.

Isn't that more hacky? I don't know. All that dm needs to know is
the location of the metadata which is located w.r.t. the end of the
device which might be at a different location if BIOS tried to pull
silly stunts. So, exporting the size BIOS might have used seems like
a straight forward solution to me.

Thanks.

--
tejun
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