#!/bin/bash
VM=$1

set -e

# Force interaction
lvremove /dev/virt/${VM}-root || true

# Don't care if there isn't one
virsh --connect qemu:///system undefine $VM || true

lvcreate -L2G -s /dev/virt/template-squeeze -n ${VM}-root

echo Made LV

ROOTFS=$(mktemp -d /tmp/mk_sqeeze_XXXXXXXXXX) || exit 1

mount /dev/virt/${VM}-root $ROOTFS
trap "umount $ROOTFS;rmdir $ROOTFS" INT TERM EXIT

#echo NETCONFIG_DNS_POLICY=\"\" >> $ROOTFS/etc/sysconfig/network/config
cp /etc/resolv.conf $ROOTFS/etc/resolv.conf
#echo default $ROUTER_IP > $ROOTFS/etc/sysconfig/network/routes
echo /dev/vdb swap swap defaults 0 0 >> $ROOTFS/etc/fstab
mkdir -p $ROOTFS/root/.ssh/
chmod 700 $ROOTFS/root/.ssh/
cp /root/.ssh/authorized_keys $ROOTFS/root/.ssh/authorized_keys
echo $VM > $ROOTFS/etc/hostname
echo "send host-name \"$VM\";" >> $ROOTFS/etc/dhcp/dhclient.conf
ls -laF $ROOTFS/etc/udev/rules.d/
sed -i -e '/SUBSYSTEM/d' $ROOTFS/etc/udev/rules.d/70-persistent-net.rules

umount $ROOTFS
rmdir $ROOTFS
trap - EXIT

echo Customised LV

cat <<EOF > /etc/libvirt/qemu/$VM.xml
<domain type='kvm'>
  <name>$VM</name>
  <memory>524288</memory>
  <currentMemory>524288</currentMemory>
  <vcpu>1</vcpu>
  <os>
    <type arch='x86_64' machine='pc-0.12'>hvm</type>
    <kernel>/kvmboot/vmlinuz-2.6.32-5-amd64</kernel>
    <initrd>/kvmboot/initrd.img-2.6.32-5-amd64</initrd>
    <cmdline>root=/dev/vda read-only</cmdline>
    <boot dev='fd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/bin/kvm</emulator>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw'/>
      <source dev='/dev/virt/$VM-root'/>
      <target dev='vda' bus='virtio'/>
    </disk>
    <interface type='bridge'>
      <source bridge='br0'/>
      <model type='virtio'/>
    </interface>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target port='0'/>
    </console>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' keymap='en-gb'/>
    <video>
      <model type='vga' vram='9216' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </memballoon>
  </devices>
</domain>
EOF

virsh --connect qemu:///system define /etc/libvirt/qemu/$VM.xml

echo Customised VM

# To make a suse initrd for virtio you need a running suse system:
# edit  /etc/sysconfig/kernel
# INITRD_MODULES="thermal ata_piix ata_generic processor fan  virtio_blk virtio_pci virtio_net"
#
# then
#   mkinitrd -B -v -L -k vmlinuz-2.6.34-12-desktop -i initrd-img-2.6.34-12-desktop-virtio
#
# Ensure the template has the correct kernel modules installed