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The 2 following scripts will list disk mapping on VIOS if you use Virtual SCSI on LPAR. And the second will recreate the disk mapping (will only print the commands to run as padmin after having deleted the VTD that you want to recreate. If you have mismatch on LPAR, with path connected to VTD in bad order (Ex: a disk hdisk0 on LPAR connected on vios1 with VTD address 0x8100000000000000 and on the other vios2 with address 0x8200000000000000). Then first list the mapping on the first vios, and copy the map output to the other vios to remap all disks in the same order using the disk serial number.

Run this script as root (oem_setup_env).
The first script will list all vhost, if no vhost<x> parameter is add, this will order disks in the order of VTD creation, with the disk serial number.

I always use a .env in scripts to set log path

[root@vios1]/home/padmin/scripts# cat .env

# global variables for all scripts
export binpath=/home/padmin/scripts
export sn=`basename $0 | cut -d. -f1`
export HOSTNAME=`/usr/bin/hostname`
export logpath=/home/padmin/scripts/log
export logname=$logpath/$sn.log
export configfile=$binpath/$sn.cfg
export destination="test@test.com"

[root@vios1]/home/padmin/scripts# cat list_maps.ksh

#!/bin/ksh
#@(#) List all vhost and maps

dir=$(dirname $0)
. $dir/.env

vhost=$1
log_serial=$logpath/list_serial_disk.txt

#-------------------------------
list_hdisk_serial()
{
pcmpath query device | egrep  "SERIAL|DEVICE" | sed '/DEV/{x;p;x;}' | sed 's/DEV#://g' | sed 's/DEVICE NAME://g' | awk '{print $2}' | sed '/^$/d' | while read word
do
  if [ $(echo $word | grep hdisk > /dev/null 2>&1;echo $?) -eq 0 ]
  then
    hd=$word
  else
    echo $hd";\c"
    echo $word
  fi
done
}

#-------------------------------
read_map()
{
hostid=$1
slot_nbr=$(/usr/ios/cli/ioscli lsmap -vadapter $hostid | grep "vhost" | head -1 | awk '{print $2}' | cut -d'-' -f3)
/usr/ios/cli/ioscli lsmap -vadapter $hostid | egrep "VTD|LUN|Backing" | sed 's/Backing//g' | awk '{print $2}' | while read line
do
  echo $line | grep hdisk > /dev/null 2>&1
  if [ $? -eq 0 ]
  then
        lunid=$(grep "$line;" $log_serial | cut -d";" -f2)
        echo "$hostid:$hd_id:$vtd:$line:$lunid:$slot_nbr:"
  else
        echo $line | grep "000000000000"  > /dev/null 2>&1
        if [ $? -eq 0 ]
        then
          hd_id=$line
        else
          vtd=$line
        fi
  fi
done
}

###############################
main ()
{
v_host=$1

list_hdisk_serial > $log_serial

if [ "$v_host" == "" ]
then
    for host in $(lsdev -C | grep vhost | awk '{print $1}')
    do
        read_map $host | sort
    done
else
    read_map $v_host  | sort
fi
}

main $vhost | tee $logname

Run this script as root (oem_setup_env).
This script will generate commands for disk mapping that have to be created as padmin user. This will not do it automatically. Before remap disks, use the command rmvdev -vtd <VTD_name> to delete all VTD that you want to recreate with right ID.

[root@vios1]/home/padmin/scripts# cat recreate_map.ksh

#!/bin/ksh
#@(#) Recreate padmin command to create maps
# The reference file is the map from existing host or another host: /home/script/log/list_map.log
# If you want to generate the command for map from another host, please change the name to have the correct reference file
#set -x

dir=$(dirname $0)
. $dir/.env

ref_file=$logpath/list_maps.log
log_serial=$logpath/list_serial_disk.txt


#-------------------------------
list_hdisk_serial()
{
pcmpath query device | egrep  "SERIAL|DEVICE" | sed '/DEV/{x;p;x;}' | sed 's/DEV#://g' | sed 's/DEVICE NAME://g' | awk '{print $2}' | sed '/^$/d' | while read word
do
  if [ $(echo $word | grep hdisk > /dev/null 2>&1;echo $?) -eq 0 ]
  then
    hd=$word
  else
    echo $hd";\c"
    echo $word
  fi
done
}

test ! -e $ref_file && echo "ERROR: The map file $ref_file doesn't exist" && exit 1
echo "Are you sure you want to use the map file: "
ls -l $ref_file
echo "[y or n]"
read answer
if [ "$answer" != "y" ]
then
    exit 0
fi

# Generate disk serial number list
list_hdisk_serial > $log_serial

for line in $(cat $ref_file)
do
    vhost=$(echo $line | cut -d':' -f1)
    vtd=$(echo $line | cut -d':' -f3)
    lunid=$(echo $line | cut -d':' -f5)
    hd=$(echo $line | cut -d':' -f4)
    hdnew=$(grep ";$lunid" $log_serial | cut -d';' -f1)
    echo " mkvdev -f -vdev $hdnew -vadapter $vhost -dev $vtd"
done

echo "\nNow you can copy/paste directly this VIOS as padmin user"

I use the following script to check if path are set in the same order on dual VIOS servers. This script runs on LPARs with VSCSI adapters. Without argument, it will print only errors, with -v verbose mode with full output. I use dsh command from NIM to run it in parallel on all LPARs.

root@nim - /root/scripts > cat show_path_mismatch.sh

#!/usr/bin/ksh
#set -x
#############################################
#@(#) Check if path are correctly set on VIOS
#############################################
# check if a disk on LPAR has the same path
# ID on both VIOS
# version 1.0 2-10-2012 Manu
#############################################

dir=`dirname $0`
. $dir/.env

#------------------------------------------------
# usage ()
#------------------------------------------------
usage()
{
rep=$*
case "$rep" in
* )
        echo "Usage: "$0
        echo "\tNo parameter required"
        echo "\tOption -v verbose"
        echo "\tCheck virtual disk address on each path print an error if the paths have different connection address"
        exit 1
        ;;
esac
}

#------------------------------------------------
# dmsg ()
#------------------------------------------------
dmsg()
{
if [ $debug == "yes" ]
then
   echo "$1"
fi
}

#------------------------------------------------
# check_path ()
#------------------------------------------------
check_path() {
hdisk=$1

VSCSI0=`lspath -l $hdisk -F"parent" | head -1`
VSCSI1=`lspath -l $hdisk -F"parent" | tail -1`
if [[ "$VSCSI0" == "$VSCSI1" ]]
then
  echo $hdisk:
  type=$(lsattr -El sys0 -a modelname | cut -d " " -f2 | sed 's/IBM,//g')
  if [[ "$type" == "8406-70Y" ]]
  then
    echo "******** $hdisk single path disk on IVM *********"
  else
    echo "******** ERROR $hdisk single path disk on dual VIOS Server *********"
  fi
else
  CONNECT0=`odmget -q "name=$hdisk and parent=$VSCSI0 and path_status=1" CuPath | grep connection | awk '{print $3}'`
  PRIO0=`lspath -AEH -l $hdisk -p $VSCSI0 | grep priority | awk '{print $2}'`
  CONNECT1=`odmget -q "name=$hdisk and parent=$VSCSI1 and path_status=1" CuPath | grep connection | awk '{print $3}'`
  PRIO1=`lspath -AEH -l $hdisk -p $VSCSI1 | grep priority | awk '{print $2}'`

  if [[ "$CONNECT0" != "$CONNECT1" ]]
  then
    echo $hdisk:
    echo "******** ERROR on disk $hdisk paths missmatch on the 2 VIOS *********"
    dmsg "vscsi= $VSCSI0 connection= $CONNECT0 priority= $PRIO0 "
    dmsg "vscsi= $VSCSI1 connection= $CONNECT1 priority= $PRIO1 "
    echo "########################"
  else
    dmsg "$hdisk:"
    dmsg "vscsi= $VSCSI0 connection= $CONNECT0 priority= $PRIO0 "
    dmsg "vscsi= $VSCSI1 connection= $CONNECT1 priority= $PRIO1 "
    dmsg "########################"
  fi
fi
}


###########################################################################
# main ()
#
# Check if a disk is mapped on both VIOS with the same adress 0x8100000000000000
#
#root@nim]/root# ssh padmin@vio1 ioscli lsmap -vadapter vhost3
#SVSA            Physloc                                      Client Partition ID
#--------------- -------------------------------------------- ------------------
#vhost3          U9117.MMA.10579F0-V1-C16                     0x00000006
#
#VTD                   vtscsi3
#Status                Available
#LUN                   0x8100000000000000
#
###########################################################################
main () {

debug=no

while [ $# -gt 0 ]
do
   case "$1" in
      -v) debug=yes ;;
      -h|help) usage
               exit 1;;
   esac
   shift
done

dmsg "`date` : Begin of $sn $(hostname)"


dmsg "########################"

for HDISK in $(lsdev -Cc disk | grep "Virtual" | awk '{print $1}')
do
  check_path $HDISK
done

dmsg "`date` : Begin of $sn $(hostname)"

}

main $* 2>&1 | tee $logname