xref: /qemu/tests/avocado/linux_initrd.py (revision 5db05230) 
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
11import os
12import logging
13import tempfile
14
15from avocado_qemu import QemuSystemTest
16from avocado import skipUnless
17
18
19class 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")
93