Luns policy round robin esxi

This article describes how to set policy for path selection to Round Robin ( default is Fixed) via command line. Doing it via Vsphere GUI could be quite time consumiung :)

  tested on Esxi 4.1.0 #1 SMP Release build-348481

1.       To generate the luns file in /tmp

1a. create file esxihosts with host names e.g.

Host1

Host2

Host3

for x in `cat esxihosts `; do echo --------------$x------------; ssh $x "esxcfg-mpath -b | grep ^naa | awk '{print $1}' > /tmp/luns "; done

2.       Copy script to all hosts in the cluster:

for x in `cat esxihosts `; do scp setroundrobin  $x:/tmp/; done

Script is:

cat setroundrobin

#!/bin/sh

#

# To generate the luns file in /tmp

#

# esxcfg-mpath -b | grep ^naa | awk '{print $1}' > /tmp/luns

#

# NOTE: remove the internal disk from the luns file first

#

luns=/tmp/luns

for i in `cat $luns`

do

   echo $i

   esxcli nmp device setpolicy --device $i --psp VMW_PSP_RR

   sleep 3

done

exit 0

3.       Execute the script on all hosts:

for x in `cat esxihosts `; do echo --------------$x------------; ssh $x " sh /tmp/setroundrobin"; done