SCSI drive mappings

[Jerry Feldman]

Drive mappings in Linux are somewhat arbitrary. My specific problem is
that I have a SCSI box, 2 controllers 5 slots each with roughly 9 drives
currently plugged in. Looking at LVM, one drive, /dev/sdd, has not been
allocated. The issue is that I want to figure out what physical drive it
is. The second problem is that this is a production drive and I don't
want to have to shut it down. Unfortunately, it is not hot-swap in that
if I place a drive into an empty slot, the system will not recognize it.
I do know which physical drive is the boot drive, so I could conceivably
take down NFS and unmount the LVM volumes. In any case, what I want to
do is just put in a 300GB drive that my WD NAS (when I get it working)
is replacing. At that point I will have to reboot. (SATA is so much
nicer in this respect in that I can pop drives in and out. (I know it is
dangerous, but this is just hypthetical).

--=20
Jerry Feldman <gaf-mNDKBlG2WHs at public.gmane.org>
Boston Linux and Unix
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