tests/avocado/linux_initrd.py

   1 # Linux initrd integration test.
   2 #
   3 # Copyright (c) 2018 Red Hat, Inc.
   4 #
   5 # Author:
   6 #  Wainer dos Santos Moschetta <wainersm@redhat.com>
   7 #
   8 # This work is licensed under the terms of the GNU GPL, version 2 or
   9 # later.  See the COPYING file in the top-level directory.
  10
  11 import os
  12 import logging
  13 import tempfile
  14
  15 from avocado_qemu import QemuSystemTest
  16 from avocado import skipUnless
  17
  18
  19 class LinuxInitrd(QemuSystemTest):
  20     """
  21     Checks QEMU evaluates correctly the initrd file passed as -initrd option.
  22
  23     :avocado: tags=arch:x86_64
  24     :avocado: tags=machine:pc
  25     """
  26
  27     timeout = 300
  28
  29     def test_with_2gib_file_should_exit_error_msg_with_linux_v3_6(self):
  30         """
  31         Pretends to boot QEMU with an initrd file with size of 2GiB
  32         and expect it exits with error message.
  33         Fedora-18 shipped with linux-3.6 which have not supported xloadflags
  34         cannot support more than 2GiB initrd.
  35         """
  36         kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora/li'
  37                       'nux/releases/18/Fedora/x86_64/os/images/pxeboot/vmlinuz')
  38         kernel_hash = '41464f68efe42b9991250bed86c7081d2ccdbb21'
  39         kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
  40         max_size = 2 * (1024 ** 3) - 1
  41
  42         with tempfile.NamedTemporaryFile() as initrd:
  43             initrd.seek(max_size)
  44             initrd.write(b'\0')
  45             initrd.flush()
  46             self.vm.add_args('-kernel', kernel_path, '-initrd', initrd.name,
  47                              '-m', '4096')
  48             self.vm.set_qmp_monitor(enabled=False)
  49             self.vm.launch()
  50             self.vm.wait()
  51             self.assertEqual(self.vm.exitcode(), 1)
  52             expected_msg = r'.*initrd is too large.*max: \d+, need %s.*' % (
  53                 max_size + 1)
  54             self.assertRegex(self.vm.get_log(), expected_msg)
  55
  56     @skipUnless(os.getenv('QEMU_TEST_FLAKY_TESTS'), 'Test is unstable on GitLab')
  57
  58     def test_with_2gib_file_should_work_with_linux_v4_16(self):
  59         """
  60         :avocado: tags=flaky
  61
  62         QEMU has supported up to 4 GiB initrd for recent kernel
  63         Expect guest can reach 'Unpacking initramfs...'
  64         """
  65         kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
  66                       '/linux/releases/28/Everything/x86_64/os/images/pxeboot/'
  67                       'vmlinuz')
  68         kernel_hash = '238e083e114c48200f80d889f7e32eeb2793e02a'
  69         kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
  70         max_size = 2 * (1024 ** 3) + 1
  71
  72         with tempfile.NamedTemporaryFile() as initrd:
  73             initrd.seek(max_size)
  74             initrd.write(b'\0')
  75             initrd.flush()
  76
  77             self.vm.set_console()
  78             kernel_command_line = 'console=ttyS0'
  79             self.vm.add_args('-kernel', kernel_path,
  80                              '-append', kernel_command_line,
  81                              '-initrd', initrd.name,
  82                              '-m', '5120')
  83             self.vm.launch()
  84             console = self.vm.console_socket.makefile()
  85             console_logger = logging.getLogger('console')
  86             while True:
  87                 msg = console.readline()
  88                 console_logger.debug(msg.strip())
  89                 if 'Unpacking initramfs...' in msg:
  90                     break
  91                 if 'Kernel panic - not syncing' in msg:
  92                     self.fail("Kernel panic reached")