>
> If you explained *why* you thought you wanted the number that bmap
> gives you, maybe others would be able to think of a better way of
> achieving your goal.
>
for a lowlevel mirroring done directly via scsi controler
>
> > > or it may be a real disk but the block has been transparently remapped
> > > elsewhere by the firmware or probably various other gotchas.
> > >
> >
> > do you mean that a special-purpose hardware is being used as a proxy to the disk, or
> > that this is a feature available in a "normal" hard drives?
>
> All SCSI and other high-end disks do this and I think some fancy
> ATA ones do too (or soon will or something).
>
do you mean that i think block #X starts on sector #Y, when it realy starts on sector #Z,
but any request regrading sector #Y will be mapped transparently to sector #Z by the
SCSI controler or someone ?
if so i should not realy care as long as i'm interfcing with the SCSI controler, and not
trying to read the drive using my own read/write head.
/gabriel
>
> --Malcolm
>
> --
> Malcolm Beattie <mbeattie@sable.ox.ac.uk>
> Unix Systems Programmer
> Oxford University Computing Services
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