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#!/bin/sh
#
# Create a new VM for liw.
set -eu
die()
{
echo "$@" 1>&2
exit 1
}
# Check parameters.
if [ "$#" != 2 ]
then
die "Usage: $0 NAME BASE"
fi
# Command line parameters: name of VM and base image (no .img.xz suffix).
name="$1"
base="$2"
# Config variables.
. "$HOME/.config/ansibleness/vm.conf"
# Does the base image exist?
basepath="$imagedir/base-$base.img.xz"
if [ ! -e "$basepath" ]
then
echo "$basepath does not exist" 1>&2
exit 1
fi
# How large are the (uncompressed) images?
size="4G"
# Create new LV.
sudo lvcreate --name "$name" --size "$size" "$vg"
lvpath="/dev/$vg/$name"
# Copy uncompressed image to LV.
unxz < "$basepath" |
pv --size "$size" |
sudo ionice -c3 tee "$lvpath" > /dev/null
# Create VM.
virt-install --connect qemu:///system \
--quiet \
--name="$name" \
--memory=1024 \
--cpu=host-model-only \
--import \
--os-variant=debianwheezy \
--disk="path=$lvpath,cache=none" \
--network="$vmnetwork" \
--graphics=spice \
--noautoconsole
# If we're using the virtual network "default", wait for the VM to get
# a DHCP response and add it to /etc/hosts. We don't do it for other
# types of network (e.g., bridge=br0), since we ... can't.
if [ "$vmnetwork" = "network=default" ]
then
# Get the MAC address.
mac="$(virsh -c qemu:///system dumpxml "$name" |
sed -n "/<mac address=/s/^.*'\(.*\)'.*/\1/p")"
# Get IP address related to the MAC address. Append that to /etc/hosts.
leases=/var/lib/libvirt/dnsmasq/default.leases
ip=""
while [ "$ip" = "" ]
do
sleep 1
ip="$(awk -v "mac=$mac" '$2 == mac { print $3 }' "$leases")"
done
echo "$ip $name" | sudo tee -a /etc/hosts > /dev/null
# Done.
echo "Virtual machine $name ($ip) has been created and started."
else
echo "Virtual machien $name has been created and started, and may be ready soon."
fi
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