Add vm-migrate script

README.md

@@ -5,6 +5,7 @@ This repository contain scripts for managing KVM hypervisors used with DRBD and
 It contains the following scripts.
 
 - add-vm: create DBRD volumes and virtual machines.
+- vm-migrate: migrate a DRBD based virtual machine
 - kvmstats: gives informations about defined virtual machines.
 
 ## Install

vm-migrate

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -eu
+
+error() {
+    msg="${1:-$(cat /dev/stdin)}"
+    echo "ERROR : ${msg}" >&2
+    exit 1
+}
+
+vmname="${1:-}"
+[ -n "${vmname}" ] || error "You must provide <vmname> !"
+virsh list --name | grep -qE "^${vmname}$" || error "${vmname} is not a running VM !"
+
+[ -f "/etc/evolinux/add-vm.cnf" ] && . /etc/evolinux/add-vm.cnf
+slaveKVMIP="${slaveKVMIP:-}"
+
+ssh "${slaveKVMIP}" virsh exit || error "Cannot connect to libvirt on ${slaveKVMIP} !"
+
+ssh "${slaveKVMIP}" drbdadm primary "${vmname}"
+virsh migrate --live --unsafe --verbose "${vmname}" "qemu+ssh://${slaveKVMIP}/system" "tcp://${slaveKVMIP}/"
+virsh dumpxml "${vmname}" | ssh "${slaveKVMIP}" virsh define /dev/stdin
+virsh undefine "${vmname}"
+drbdadm secondary "${vmname}"