1#!/usr/bin/python 2# 3# Copyright (c) 2010 The Chromium Authors. All rights reserved. 4# Use of this source code is governed by a BSD-style license that can be 5# found in the LICENSE file. 6 7__author__ = 'kdlucas@chromium.org (Kelly Lucas)' 8 9import logging, os 10 11from autotest_lib.client.bin import test, utils 12from autotest_lib.client.common_lib import error 13 14 15class platform_TempFS(test.test): 16 """ 17 Test temp file systems. 18 """ 19 version = 1 20 21 def run_once(self): 22 errors = 0 23 # The minimum available space we expect on temp filesystems. 24 # TempFS allows 1/2 of Total Memory for each temp fs. Our threshold 25 # allows for 50% usage of space allocated before this test is run. 26 27 threshold = utils.memtotal()/4 28 tempdirs = ['/dev', '/tmp', '/dev/shm', '/var/tmp', '/run', 29 '/run/lock'] 30 31 for dir in tempdirs: 32 if os.path.isdir(dir): 33 # utils.freespace is in bytes, so convert to kb. 34 avail = utils.freespace(dir)/1024 35 if avail < threshold: 36 logging.error('Not enough available space on %s', dir) 37 logging.error('%d bytes is minimum, found %d bytes', 38 (threshold, avail)) 39 errors += 1 40 else: 41 logging.error('%s does not exist!' % dir) 42 errors += 1 43 44 if errors: 45 raise error.TestFail('There were %d temp directory errors' % errors) 46