#!/bin/bash
# Script to move a vserver from one machine to another
# version 1.00

if [ ! "$1" ]
then
        echo "Usage: move-server.sh <NAME> <DESTINATION SERVER IP>"
	echo
        exit
fi

if [ ! "$2" ]
then
        echo "Usage: move-server.sh <NAME> <DESTINATION SERVER IP>"
	echo
        exit
fi

NAME=$1
DEST=$2
PARTSIZE=`lvdisplay /dev/my_volume_group/$NAME |grep "LV Size" | awk {'print $3'}`

echo "Creating volume on destination server"
ssh $DEST lvcreate -L ${PARTSIZE}G -n $NAME my_volume_group
ssh $DEST mkfs -t ext3 /dev/my_volume_group/$NAME
ssh $DEST mount -t ext3 /dev/my_volume_group/$NAME /target

if [ $? != 0 ]
then
	echo
	echo "Error creating volume on remote host.  Cannot continue."
	echo
	exit
fi

echo "Beginning copy"
ssh $DEST dd if=/dev/zero of=/xen/swap/${NAME}.swap bs=1k seek=256k count=1
scp /etc/xen/auto/${NAME}.cfg ${DEST}:/etc/xen/auto/

# Do initial rsync
lvcreate -L 2G -s -n vmsnapshot /dev/my_volume_group/$NAME
mount -t ext3 /dev/my_volume_group/vmsnapshot /mnt
rsync -e ssh -avHl /mnt/ $DEST:/target/ && umount /mnt

# Now save the account
echo "Stopping Account..."
xm shutdown $NAME
sleep 20

echo "Performing final rsync..."
mount -t ext3 /dev/my_volume_group/$NAME /mnt
rsync -e ssh -avHl /mnt/ ${DEST}:/target/ 
ssh $DEST umount /target
ssh $DEST xm create /etc/xen/auto/${NAME}.cfg

# Cleanup commands
mv /etc/xen/auto/${NAME}.cfg /etc/xen/disabled/
grep -v $NAME /etc/backup/backup.list > /etc/backup/backup.list
lvremove -f /dev/my_volume_group/vmsnapshot
umount /mnt
sleep 5
lvremove -f /dev/my_volume_group/$NAME

echo
echo "Migration Complete."
echo