[dm-devel] How to distinguish active and standby path?

["**me**" <sam wanshan gmail com>]

Hi Christophe,

  We're using your multipath tools to access an Active-Standby storage(Oracle SS7420 if you're concerned.)

  There're 4 path's to a LUN, 2 active and 2 standby.
  But we can't distinguish them from 'multipath -ll'.

  for example:
-------------------------------------------------------------------------
chuli3v0 (3600144f0ad85965d00004f446c610001) dm-34 SUN,ZFS Storage 7420
[size=4.0T][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][enabled]
 \_ 8:0:2:2  sdbd 67:112  [active][ready]
\_ round-robin 0 [prio=1][enabled]
 \_ 6:0:3:2  sdt  65:48   [active][ready]
\_ round-robin 0 [prio=1][enabled]
 \_ 8:0:0:2  sdbv 68:144  [active][ready]
\_ round-robin 0 [prio=1][enabled]
 \_ 6:0:2:2  sdcn 69:176  [active][ready]
-----------------------------------------------------------------------

  All 4 path's are same.
  We're using redhat 5.5 and multipath 0.4.7

  Is there any way to distinguish them?

  Thanks and regards

Sam