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
  14 from avocado_qemu import Test
  15
  16
  17 class LinuxInitrd(Test):
  18     """
  19     Checks QEMU evaluates correctly the initrd file passed as -initrd option.
  20
  21     :avocado: tags=arch:x86_64
  22     :avocado: tags=machine:pc
  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             self.vm.add_args('-kernel', kernel_path, '-initrd', initrd.name,
  45                              '-m', '4096')
  46             self.vm.set_qmp_monitor(enabled=False)
  47             self.vm.launch()
  48             self.vm.wait()
  49             self.assertEqual(self.vm.exitcode(), 1)
  50             expected_msg = r'.*initrd is too large.*max: \d+, need %s.*' % (
  51                 max_size + 1)
  52             self.assertRegex(self.vm.get_log(), expected_msg)
  53
  54     def test_with_2gib_file_should_work_with_linux_v4_16(self):
  55         """
  56         QEMU has supported up to 4 GiB initrd for recent kernel
  57         Expect guest can reach 'Unpacking initramfs...'
  58         """
  59         kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
  60                       '/linux/releases/28/Everything/x86_64/os/images/pxeboot/'
  61                       'vmlinuz')
  62         kernel_hash = '238e083e114c48200f80d889f7e32eeb2793e02a'
  63         kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
  64         max_size = 2 * (1024 ** 3) + 1
  65
  66         with tempfile.NamedTemporaryFile() as initrd:
  67             initrd.seek(max_size)
  68             initrd.write(b'\0')
  69             initrd.flush()
  70
  71             self.vm.set_console()
  72             kernel_command_line = 'console=ttyS0'
  73             self.vm.add_args('-kernel', kernel_path,
  74                              '-append', kernel_command_line,
  75                              '-initrd', initrd.name,
  76                              '-m', '5120')
  77             self.vm.launch()
  78             console = self.vm.console_socket.makefile()
  79             console_logger = logging.getLogger('console')
  80             while True:
  81                 msg = console.readline()
  82                 console_logger.debug(msg.strip())
  83                 if 'Unpacking initramfs...' in msg:
  84                     break
  85                 if 'Kernel panic - not syncing' in msg:
  86                     self.fail("Kernel panic reached")