#!/bin/ksh
#
# 12/06/2003, Thomas Sluyter, UNIX Support
# EMC-migrate - a script designed to migrate any and all volumes on a server, with the exception of the rootdg,
# onto the EMC central storage.
#
# 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
LOCCONTS=`vxdmpadm listctlr all | grep -v "=" | grep -v "emc" | grep -v "CTLR-NAME" | awk '{print $1}' | sed -e 's/c//' | tr -d '\n'`
# Following var changed for MIRROR subroutine. q.v.
#EMCCONTS=`vxdmpadm listctlr all | grep -v "=" | grep "emc" | grep -v "CTLR-NAME" | awk '{print $1}' | sed -e 's/c//' | tr -d '\n'` 
EMCCONTS=`vxdmpadm listctlr all | grep -v "=" | grep "emc" | grep -v "CTLR-NAME" | awk '{print $1}' | tr -s '\n' ' ' | awk '{print $1}'`
#echo "The non-EMC disk controllers are: " $LOCCONTS
#echo "The EMC disk controllers are: " $EMCCONTS

# 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 EMC 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
		# Change following line. Original line didn't work since you need to have seperate
		# !ctlr statements for each controler. Instead I'd just use one ctlr statement with
		# the one (out of two) EMC controller from $EMCCONTS
		#vxassist -g $DG mirror $VOL !ctlr:$LOCCONTS
		vxassist -g $DG mirror $VOL ctlr:$EMCCONTS
	done
	rm /tmp/migrate.vols
done
}
# End of MIRROR subroutine

UNMIRROR()
{
# Remove the mirrors created on EMC hard disks
for DG in `cat /tmp/migrate.dg`
do
   for CTLR in `vxdmpadm listctlr all | grep -v "=" | grep "emc" | grep -v "CTLR-NAME" | awk '{print $1}'`
   do
      vxdisk list | grep $DG | grep "^$CTLR" | awk '{print $3}' >> /tmp/migrate.disks
   done
   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()
{
for DG in `cat /tmp/migrate.dg`
do
   for CTLR in `vxdmpadm listctlr all | grep -v "=" | grep -v "emc" | grep -v "CTLR-NAME" | awk '{print $1}'`
   do
      vxdisk list | grep $DG | grep "^$CTLR" | awk '{print $3}' >> /tmp/migrate.disks
   done	
   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()
{
for DG in `cat /tmp/migrate.dg`
do
   for CTLR in `vxdmpadm listctlr all | grep -v "=" | grep -v "emc" | grep -v "CTLR-NAME" | awk '{print $1}'`
   do
      vxdisk list | grep $DG | grep "^$CTLR" | awk '{print $3}' >> /tmp/migrate.disks
   done
   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 EMC storage _only_. Only perform this command once the EMC 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
   for CTLR in `vxdmpadm listctlr all | grep -v "=" | grep -v "emc" | grep -v "CTLR-NAME" | awk '{print $1}'`
   do
      vxdisk list | grep $DG | grep "^$CTLR" | awk '{print $3}' >> /tmp/migrate.disks
   done
   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 -gt 1 ];
then
	echo "BAILING OUT! This server is also connected to the HP XP1024!"
	exit 1
fi

PARAM=$1
case $PARAM
in
	mirror) MIRROR;;
	unmirror)	UNMIRROR;;
	detach) DETACH;;
	attach)	ATTACH;;
	murder) MURDER;;
	*)	echo ""; echo "Usage: EMC-migrate [mirror|unmirror|detach|attach|murder]";echo ""
		echo "mirror:		Create mirrors of every volume (outside rootdg) on EMC storage."
		echo "unmirror:	Remove the EMC 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