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



Tejun Heo wrote:
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.

"<shrug> I suppose" is basically a reluctant ack, in the absence of other solutions :)



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