NetApp - Copy LUN mappings

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#!/bin/bash

KEY_FILE="/root/.ssh/netapp.dsa"
SSH_OPTS="/root/.ssh/netapp-ssh_config"

if [ $# -ne 3 ] ; then
  echo "fas-copy-lunmap: FAS_CONTROLLER SOURCE_IGROUP TARGET_IGROUP"
  echo
  echo "Copy the LUN map from one igroup to another, ie for ESX reinstallation"
  echo
  echo "  Usage:"
  echo "    - FAS_CONTROLLER:   Hostname/IP-adress of the DATA ONTAP controller"
  echo "    - SOURCE_IGROUP:    igroup that is used as a reference for the copy process"
  echo "    - TARGET_IGROUP:    igroup that is actually modified"
  echo
  exit 1
fi

FAS_CTRL=$1
SOURCE=$2
TARGET=$3

ssh_fas() {
  # $@: commands for Data ONTAP
  COMMANDS="$@"
  /usr/bin/ssh -i $KEY_FILE -l root -F $SSH_OPTS $COMMANDS
}

#set -x

# Get the lun list.
for lun in $( ssh_fas $FAS_CTRL lun show -g $SOURCE | awk '{ print $1 }' | sort -u ); do

  # Get the LUN number its mapped
  LUN_ID="$( ssh_fas $FAS_CTRL lun show -m $lun | grep "^/vol" | awk '{ print $3 }' )"

  # If the LUN id is 0, skip otherwise we would copy the boot LUN
  if [ "$LUN_ID" != "0" ] ; then
    # Actually map the lun to our host
    echo "Mapping $lun to $TARGET as LUN_ID $LUN_ID"
    ssh_fas $FAS_CTRL lun map $lun $TARGET $LUN_ID
  fi
done
#set +x