server/control_segments/verify

def check_diskspace(host, path, gb):
	df = host.run('df -mP %s | tail -1' % path).stdout.split()
	free_space_gb = int(df[3])/1000.0
	if free_space_gb < gb:
		raise AutoservHostError('Not enough free space on ' +
					'%s - %.3fGB free, want %.3fGB' % 
					(path, free_space_gb, gb))


# This needs more stuff in it. Check for diskspace, etc. But it's a start.
def verify(machine):
	print 'Initializing host ' + machine
	host = hosts.create_host(machine, initialize=False)
	print 'Pinging host ' + machine
	sys.stdout.flush()
	host.ssh_ping()
	print 'Getting autodir for ' + machine
	autodir = None
	try:
		autodir = autotest._get_autodir(host)
		if autodir:
			print 'Checking diskspace for %s on %s' % (machine, 
								   autodir)
			check_diskspace(host, autodir, 20)
	except AutoservHostError:
		raise		# only want to raise if it's a space issue
	except:
		pass		# autotest dir may not exist, etc. ignore
	if "site_verify" in globals():
		site_verify(host)

job.parallel_simple(verify, machines, log=False)