How to configure custom prio values in dm-multipath for RHEL6?

Solution Verified - Updated -

Issue

  • An iSCSI LUN provisioned with 10G and 1G link.
  • Need to to configure 10GB link as primary path in device-mapper-multipath.
  • Is it possible to set path priority using custom prio script in RHEL6? or any other option to configure multipath favour to 10G connection over 1G?
mpathd (36000d310004ff300000000000000001b) dm-4 COMPELNT,Compellent Vol
size=768G features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=1 status=active
| `- 88:0:0:1 sdg 8:96 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
  `- 90:0:0:1 sdb 8:16 active ready running

Environment

  • Red Hat Enterprise Linux 6, kernel version 2.6.32-358.18.1.el6.x86_64
  • device-mapper-multipath, version 0.4.9-64.el6_4.2.x86_64

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