#!/bin/bash
# Script to migrate multiple virtual machines to another host via ssh
#
# Copyright (C) 2023 Adrien 'neox' Bourmault <neox@a-lec.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

count=$1
VMs=$(sudo virsh list --state-running --name | head -n $count | sort -R)

for vm in $VMs
do
    if [ -z "$(cat /proc/drbd | grep Connected)" ]
    then
        echo "ERROR : SPLIT BRAIN"
        exit 1
    fi

    echo MIGRATING $vm ...
    sudo virsh migrate --verbose --live --persistent --undefinesource --abort-on-error $vm qemu+ssh://mother.lan:222/system
done