clone-template-image.sh

#!/bin/bash

NEW_VERSION=$1
if [ "${#NEW_VERSION}" != "3" ]; then
  echo "usage: $0 <new image version (must be 3 digits)>"
  exit 1
fi

NEW_IMAGE_PATH=/vm/base-$NEW_VERSION.img
if [ -e $NEW_IMAGE_PATH ]; then
  echo "File already exists: $NEW_IMAGE_PATH"
  exit 2
fi

# Make sure only root can run our script
if [ "$(id -u)" != "0" ]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi


echo "Waiting for osprey-00 to become offline..."
java -jar jenkins-cli.jar -s http://jenkins.mw.lab.eng.bos.redhat.com/hudson/ wait-node-offline osprey-00
echo "osprey-00 is now offline"

NODE=osprey-00
if [ "$(virsh list | grep $NODE)" != "" ]; then
  virsh shutdown $NODE
fi

while [ "$(virsh list | grep $NODE)" != "" ]; do
  echo "Waiting for $NODE to shutdown..."
  sleep 2
done

rsync -r -v --progress /vm/osprey-00.img $NEW_IMAGE_PATH

kpartx -a $NEW_IMAGE_PATH
pvscan
vgchange -a y rhel
mount /dev/rhel/root /mnt/tmp

rm /mnt/tmp/etc/hostname
rm -rf /mnt/tmp/tmp/*
echo $NEW_VERSION > /mnt/tmp/etc/image-version

umount /mnt/tmp
vgchange -a n rhel
pvscan
kpartx -d $NEW_IMAGE_PATH

virsh start osprey-00