[dm-devel] multiple paths question

["Michael Di Domenico" <mdidomenico gmail com>]

I'm a little confused over how multipathing works.  I've got a host
with a 2port HBA and a 4port Storage unit.  My multipath setup seems
to create 8 LUNS and then splitting them up into two groups.  This is
a single disk.  How do i get it to show me a single target instead of
dm-0 and dm-1?

[root node1 ~]$ multipath -ll
mpath2 (HITACHI_DF500_B_) dm-0 HITACHI ,DF500
[size=1.0G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=0][active]
 \_ 3:0:3:0 sdi 8:128 [active][ready]
 \_ 3:0:2:0 sdh 8:112 [active][ready]
 \_ 2:0:3:0 sde 8:64  [active][ready]
 \_ 2:0:2:0 sdd 8:48  [active][ready]
mpath3 (HITACHI_DF500_A_) dm-1 HITACHI ,DF500
[size=1.0G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=0][active]
 \_ 3:0:1:0 sdg 8:96  [active][ready]
 \_ 3:0:0:0 sdf 8:80  [active][ready]
 \_ 2:0:1:0 sdc 8:32  [active][ready]
 \_ 2:0:0:0 sdb 8:16  [active][ready]