#!/bin/ksh
#
# 09/09/2003, Thomas Sluyter, UNIX Support
# HP-migrate - a script designed to migrate any and all volumes on a server, with the 
# exception of the rootdg volumes, onto the HP central storage. This will also move
# any data on EMC storage over to the HP boxen.
#
# PLEASE NOTE: this script needs to be run from the root account
#

# Initial clean up, in case this script ran earlier with a failure
rm /tmp/migrate.* >/dev/null 2>&1

# Build list of controlers
# The HPCONTS var will contain the primary controller number for EMC, which incidentally
# is the _same_ for HP.
LOCCONTS=`vxdmpadm listctlr all | grep -v "=" | grep -v "emc" | grep -v "CTLR-NAME" | awk '{print $1}' | sed -e 's/c//' | tr -d '\n'`
HPCONT=`vxdmpadm listctlr all | grep -v "=" | grep -i xp1024 | grep -v "CTLR-NAME" | awk '{print $1}' | head -1`

# Build list of HP primary target
WWN_PREAMBLE=""
if [ "$WWN_PREAMBLE" != "" ]; then
	HPTARGET=`grep $WWN_PREAMBLE /kernel/drv/lpfc.conf | grep lpfc0 | sed -e 's/^.*t/t/;s/".*//' | head -1`
else
	HPTARGET=""
fi

# Build list of disk groups
vxprint | grep "Disk group" |awk '{print $3}' | grep -v rootdg > /tmp/migrate.dg


MIRROR()
{
# Find out if there are any RAID-5 volumes around. We don't want those on HP since that'll bork performance
# to no end. So we'll need to convert those to concat first.
# This'll probably only apply to the TTSSUNs 38 and 57. "But we're not going to migrate them, thomas!", you'll say...
# I'm well aware of that, but this is just to make the script more optimal, so we can use the same script at a later
# time for other servers as well (which leads to a win++).
for DG in `cat /tmp/migrate.dg`
do
	vxprint -g $DG | grep raid5 | awk '{print $2}' > /tmp/migrate.raid
	if [[ `wc -l /tmp/migrate.raid | awk '{print $1}'` -gt 0 ]]
	then
		for RAID in `cat /tmp/migrate.raid`
		do
			vxassist -g $DG relayout $RAID layout=nomirror
		done
		rm /tmp/migrate.raid
	fi
done

# Create a mirror for each volume in the relevant disk groups
for DG in `cat /tmp/migrate.dg`
do
	vxprint -g $DG | grep "v " | awk '{print $2}' > /tmp/migrate.vols
	for VOL in `cat /tmp/migrate.vols`
	do
		#Original line from EMC migration script.
		#vxassist -g $DG mirror $VOL ctlr:$HPCONTS
		vxassist -g $DG mirror $VOL target:$HPCONT$HPTARGET
	done
	rm /tmp/migrate.vols
done
}
# End of MIRROR subroutine

UNMIRROR()
{
# Remove the mirrors created on HP hard disks
for DG in `cat /tmp/migrate.dg`
do
   vxdisk list | grep $DG | grep $HPCONT$HPTARGET | awk '{print $3}' >> /tmp/migrate.disks
   for DISK in `cat /tmp/migrate.disks`
   do
      vxprint -g $DG | grep -v "^dm" | grep $DISK | awk '{print $3}' >> /tmp/migrate.plex
   done
   for PLEX in `cat /tmp/migrate.plex`
   do
      VOL=`echo $PLEX | sed -e 's/-.*//'`
      vxplex -g $DG -v $VOL -o rm dis $PLEX
   done
 
   rm /tmp/migrate.disks /tmp/migrate.plex
done 
}
# End of UNMIRROR subroutine

DETACH()
{
# Detach the original data volumes on EMC / local storage for testing
for DG in `cat /tmp/migrate.dg`
do
   vxdisk list | grep $DG | grep $HPCONT$HPTARGET | awk '{print $3}' >> /tmp/migrate.disks
   for DISK in `cat /tmp/migrate.disks`
   do
      vxprint -g $DG | grep -v "^dm" | grep -v LOG| grep $DISK | awk '{print $3}' >> /tmp/migrate.plex
   done
   for PLEX in `cat /tmp/migrate.plex`
   do
      VOL=`echo $PLEX | sed -e 's/-.*//'`
      vxplex -g $DG -v $VOL det $PLEX
   done 

   rm /tmp/migrate.disks /tmp/migrate.plex
done
}
# End of DETACH subroutine

ATTACH()
{
# Reattach the original data volumes to the mirror set, after testing.
for DG in `cat /tmp/migrate.dg`
do
   vxdisk list | grep $DG | grep $HPCONT$HPTARGET | awk '{print $3}' >> /tmp/migrate.disks
   for DISK in `cat /tmp/migrate.disks`
   do
      vxprint -g $DG | grep -v "^dm" | grep $DISK | awk '{print $3}' >> /tmp/migrate.plex
   done
   for PLEX in `cat /tmp/migrate.plex`
   do
      VOL=`echo $PLEX | sed -e 's/-.*//'`
      vxplex -g $DG att $VOL $PLEX
   done
 
   rm /tmp/migrate.disks /tmp/migrate.plex
done     
}
# End of ATTACH subroutine

MURDER()
{
echo ""; echo "WARNING!"
echo "Proceeding will destroy the original data on the local/external storage and will leave you with"
echo "the data on the HP storage _only_. Only perform this command once the HP storage has been succes-"
echo "fully tested and approved."
echo ""; echo "Proceed? (yes/no): "; read ANSWER
case $ANSWER 
in
	yes)	echo "Well, here we go then. *takes out the 12 gauge*";;
	*)	echo "Alright, we'll quit (or you just entered -y- instead of -yes-"; exit 1;;	
esac

# Making sure that all of the originals are attached so we can delete them
ATTACH >/dev/null 2>&1

for DG in `cat /tmp/migrate.dg`
do
   vxdisk list | grep $DG | grep -v $HPCONT$HPTARGET | awk '{print $3}' >> /tmp/migrate.disks
   for DISK in `cat /tmp/migrate.disks`
   do
      vxprint -g $DG | grep -v "^dm" | grep $DISK | awk '{print $3}' >> /tmp/migrate.plex
   done
   for PLEX in `cat /tmp/migrate.plex`
   do
      VOL=`echo $PLEX | sed -e 's/-.*//'`
      vxplex -g $DG -v $VOL -o rm dis $PLEX
      echo "*kaclick* *BOOM!* That was the original data for $VOL!"
   done

   rm /tmp/migrate.disks /tmp/migrate.plex
done
}
# End of MURDER subroutine

PRETEST=`vxdmpadm listctlr all|grep -i emc|awk '{print $1}'|head -1`
PRETEST2=`vxdmpadm listctlr all | grep -i $PRETEST | wc -l`
if [ PRETEST2 -lt 2 ];
then
        echo "BAILING OUT! This server is NOT connected to the HP XP1024!"
        exit 1
fi            

if [ "$WWN_PREAMBLE" == "" ]; then
	echo 
	echo "HP XP1024 WWN not set in script. Please verify WWPN in"
	echo "/kernel/drv/lpfc.conf and set first 14 characters in"
	echo "\$WWN_PREAMBLE then run script again."
	exit 1
else
	echo
	echo "Are you absolutely sure that the WWPN for the HP XP1024"
	echo "which is configured in the migration script is correct?"
	echo "If it is not then the script may corrupt your data!!!"
	echo "Yes / No:\c"
	read Y
	case $Y
	in
		y|Y|yes) echo "Alright. I'm continuing..."; echo;;
		n|N|no) echo "Exiting so you can make sure.";  
			echo "Modify \$WWN_PREAMBLE and enter first 14 chars of WWPN.";
			echo; exit 1;;
		*) echo "Enter y or n."; echo "Breaking"; echo; exit 1;;
	esac
fi

PARAM=$1
case $PARAM
in
	mirror) MIRROR;;
	unmirror)	UNMIRROR;;
	detach) DETACH;;
	attach)	ATTACH;;
	murder) MURDER;;
	*)	echo ""; echo "Usage: HP-migrate [mirror|unmirror|detach|attach|murder]";echo ""
		echo "mirror:		Create mirrors of every volume (outside rootdg) on HP storage."
		echo "unmirror:	Remove the HP mirrors from the mirror sets created with this command."
		echo "detach:		Detach the original data from the mirror sets created using the mirror option."
		echo "attach:		Re-attach the original data from the mirror sets created using the mirror option."
		echo "murder:		Kill the original data on local/external storage."
		echo ""
		exit 1
		;;
esac

rm /tmp/migrate.* > /dev/null 2>&1