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Hi,

Sorry for re-posting this. I suspect the previous subject was a little 
too ambiguous and perhaps it was glossed over on the list.

Is there any software out there for NetBSD that will allow for 
abstraction of multiple redundant paths to the same LUNs on multiple 
Fibre-Channel bus?

This would be similar to EMC's PowerPath software. Basically, what I'm
looking for is this...



[LUN] on EMC Clariion CX500 SAN
   | |
   | +--[FC Switch 1]--------+
   +----[FC Switch 2]------+ |
                           | |
[scsibus0 at mpt0]--------+ |
    | [scsibus1 at mpt1]-----+
    |   |
    |   |
   sd0 sd1
    \   /
     \ /
      v
      |
     ld0  - logical abstraction of sd0 and sd1. Redundant
            paths to the LUN on the SAN provide high
            availability.


... It's actually typical to see 4 devices pointing at the same LUN in
our configuration. Each FC Card has a path to each switch. Each switch
has a path to each Storage Array Controller on the SAN. It's just easier
to draw with 2.

Any help would be great.


Louis




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