tests/acceptance/linux_initrd.py

   1 # Linux initrd acceptance 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 logging
  12 import tempfile
  13 from avocado.utils.process import run
  14
  15 from avocado_qemu import Test
  16
  17
  18 class LinuxInitrd(Test):
  19     """
  20     Checks QEMU evaluates correctly the initrd file passed as -initrd option.
  21
  22     :avocado: tags=arch:x86_64
  23     """
  24
  25     timeout = 300
  26
  27     def test_with_2gib_file_should_exit_error_msg_with_linux_v3_6(self):
  28         """
  29         Pretends to boot QEMU with an initrd file with size of 2GiB
  30         and expect it exits with error message.
  31         Fedora-18 shipped with linux-3.6 which have not supported xloadflags
  32         cannot support more than 2GiB initrd.
  33         """
  34         kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora/li'
  35                       'nux/releases/18/Fedora/x86_64/os/images/pxeboot/vmlinuz')
  36         kernel_hash = '41464f68efe42b9991250bed86c7081d2ccdbb21'
  37         kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
  38         max_size = 2 * (1024 ** 3) - 1
  39
  40         with tempfile.NamedTemporaryFile() as initrd:
  41             initrd.seek(max_size)
  42             initrd.write(b'\0')
  43             initrd.flush()
  44             cmd = "%s -kernel %s -initrd %s -m 4096" % (
  45                   self.qemu_bin, kernel_path, initrd.name)
  46             res = run(cmd, ignore_status=True)
  47             self.assertEqual(res.exit_status, 1)
  48             expected_msg = r'.*initrd is too large.*max: \d+, need %s.*' % (
  49                 max_size + 1)
  50             self.assertRegex(res.stderr_text, expected_msg)
  51
  52     def test_with_2gib_file_should_work_with_linux_v4_16(self):
  53         """
  54         QEMU has supported up to 4 GiB initrd for recent kernel
  55         Expect guest can reach 'Unpacking initramfs...'
  56         """
  57         kernel_url = ('https://mirrors.kernel.org/fedora/releases/28/'
  58                       'Everything/x86_64/os/images/pxeboot/vmlinuz')
  59         kernel_hash = '238e083e114c48200f80d889f7e32eeb2793e02a'
  60         kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
  61         max_size = 2 * (1024 ** 3) + 1
  62
  63         with tempfile.NamedTemporaryFile() as initrd:
  64             initrd.seek(max_size)
  65             initrd.write(b'\0')
  66             initrd.flush()
  67
  68             self.vm.set_machine('pc')
  69             self.vm.set_console()
  70             kernel_command_line = 'console=ttyS0'
  71             self.vm.add_args('-kernel', kernel_path,
  72                              '-append', kernel_command_line,
  73                              '-initrd', initrd.name,
  74                              '-m', '5120')
  75             self.vm.launch()
  76             console = self.vm.console_socket.makefile()
  77             console_logger = logging.getLogger('console')
  78             while True:
  79                 msg = console.readline()
  80                 console_logger.debug(msg.strip())
  81                 if 'Unpacking initramfs...' in msg:
  82                     break
  83                 if 'Kernel panic - not syncing' in msg:
  84                     self.fail("Kernel panic reached")