Labeling Multipath drives

[Ben Scott]

2009/3/18 Kenny Lussier <klussier at gmail.com>:
> I have is that if I use e2label on the partition that ends up in
> /dev/mapper, I can't mount by label. I get an error saying "Multiple drives
> found with identical label". Does anyone know how to work around this?

  I was going to suggest mounting by filesystem UUID, but on second
thought, I'm guessing it would complain about duplicate UUIDs.  The
problem is not with labeling, but with the fact that the device layers
are presenting multiple logical devices which are actually the same
device.  That's going to confuse anything that does auto-detection.

  I'd suggest attacking it from the fiber channel layer.  See if there
is some kind of "duplicate suppression" or "routing protocol" or
"spanning tree" or something.  I've got no FC experience, so I don't
know the right terminology, so I can only draw analogies to other
technologies (mail, IP routing, and Ethernet, respectively).

-- Ben