| # Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging, re |
| |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.server import test |
| |
| class kernel_EmptyLines(test.test): |
| version = 1 |
| |
| def run_once(self, host=None): |
| self.client = host |
| |
| # Reboot the client |
| logging.info('kernel_EmptyLines: reboot %s' % self.client.hostname) |
| self.client.reboot() |
| |
| # Get dmesg since boot and check for empty printk lines. |
| # Format is from start of line: '[ x.yyyyyy] ' where x.y is |
| # the timestamp. |
| # |
| # A typical example for an error: |
| # [ 3.799802] device-mapper: init: foo bar |
| # [ 3.799807] |
| # [ 3.799921] device-mapper: done |
| |
| result = self.client.run('dmesg') |
| match = re.search('^\[[\s0-9\.]+\]\s*$', result.stdout, re.M) |
| |
| lines = result.stdout.count('\n') |
| |
| if match: |
| raise error.TestFail("Found an empty line in dmesg: '%s'" % |
| match.group(0)) |
| elif lines < 5: |
| raise error.TestFail("Only got %d lines of dmesg" % lines) |
| else: |
| logging.info('kernel_EmptyLines: checked %d lines' % lines) |