[dm-devel] Re: [PATCHSET] block,scsi,libata: implement alt_size

[Tejun Heo <tj kernel org>]

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