Issue

• Is it possible to setup custom prio number of multipath devices from the OS side?

• The user wants to setup this number like below.
  Before

  $ multipath -ll
  mpatha (36006016069603000XXXXXXXXXXXXX) dm-0 xxx,xxx
  size=100G features='0' hwhandler='1 emc' wp=rw
  |-+- policy='round-robin 0' prio=1 status=active
  | `- 1:0:0:0 sda 8:0  active ready  running
  |-+- policy='round-robin 0' prio=1 status=enable
  | `- 0:0:0:0 sdb 8:16 active ready  running
  |-+- policy='round-robin 0' prio=0 status=enabled
  | `- 1:0:1:0 sdc 8:32 active ready  running
  `-+- policy='round-robin 0' prio=0 status=enabled
    `- 0:0:1:0 sdd 8:48 active ready  running
  

  After

  mpatha (36006016069603000XXXXXXXXXXXXX) dm-0 xxx,xxxx
  size=100G features='0' hwhandler='1 emc' wp=rw
  |-+- policy='round-robin 0' prio=3 status=active
  | `- 1:0:0:0 sda 8:0  active ready  running
  |-+- policy='round-robin 0' prio=2 status=enabled
  | `- 0:0:0:0 sdb 8:16 active ready  running
  |-+- policy='round-robin 0' prio=1 status=enabled
  | `- 1:0:1:0 sdc 8:32 active ready  running
  `-+- policy='round-robin 0' prio=0 status=enabled
    `- 0:0:1:0 sdd 8:48 active ready  running