Simple utility to display stats of all active (running) KVM virtual machines, wrote for Fedora 17 platform for IBM Virtual Tux contest.

vmstats.py

#!/usr/bin/env python

import os
import sys
import commands

status, domains = commands.getstatusoutput("virsh list | grep running | cut -f7 -d' '")

domains = domains.rsplit('\n')

for domain in domains:
	print '\nDomain: ' + domain
	print '\tCPU:'
	comm = "virsh cpu-stats " + domain + " | tail -n 4 | grep cpu_time | cut -f2"
	os.system(comm)
	print
	print '\tMem:'
	comm = "virsh dommemstat " + domain
	os.system(comm)
	print '\tDisk:'
	status, disks = commands.getstatusoutput("virsh domblklist " + domain + "| grep d | cut -f1 -d' '")
	disks = disks.rsplit('\n')
	for disk in disks:
		print '\t\t' + disk
		comm = "virsh domblkstat " + domain + ' '+ disk + " | grep bytes | cut -f2,3 -d ' '"
		os.system(comm)