Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 89 insertions, 0 deletions

diff --git a/tests/avocado/linux_initrd.py b/tests/avocado/linux_initrd.py
new file mode 100644
index 000000000..ba02e5a56
--- /dev/null
+++ b/tests/avocado/linux_initrd.py
@@ -0,0 +1,89 @@
+# Linux initrd integration test.
+#
+# Copyright (c) 2018 Red Hat, Inc.
+#
+# Author:
+#  Wainer dos Santos Moschetta <wainersm@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later.  See the COPYING file in the top-level directory.
+
+import os
+import logging
+import tempfile
+
+from avocado_qemu import QemuSystemTest
+from avocado import skipIf
+
+
+class LinuxInitrd(QemuSystemTest):
+    """
+    Checks QEMU evaluates correctly the initrd file passed as -initrd option.
+
+    :avocado: tags=arch:x86_64
+    :avocado: tags=machine:pc
+    """
+
+    timeout = 300
+
+    def test_with_2gib_file_should_exit_error_msg_with_linux_v3_6(self):
+        """
+        Pretends to boot QEMU with an initrd file with size of 2GiB
+        and expect it exits with error message.
+        Fedora-18 shipped with linux-3.6 which have not supported xloadflags
+        cannot support more than 2GiB initrd.
+        """
+        kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora/li'
+                      'nux/releases/18/Fedora/x86_64/os/images/pxeboot/vmlinuz')
+        kernel_hash = '41464f68efe42b9991250bed86c7081d2ccdbb21'
+        kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
+        max_size = 2 * (1024 ** 3) - 1
+
+        with tempfile.NamedTemporaryFile() as initrd:
+            initrd.seek(max_size)
+            initrd.write(b'\0')
+            initrd.flush()
+            self.vm.add_args('-kernel', kernel_path, '-initrd', initrd.name,
+                             '-m', '4096')
+            self.vm.set_qmp_monitor(enabled=False)
+            self.vm.launch()
+            self.vm.wait()
+            self.assertEqual(self.vm.exitcode(), 1)
+            expected_msg = r'.*initrd is too large.*max: \d+, need %s.*' % (
+                max_size + 1)
+            self.assertRegex(self.vm.get_log(), expected_msg)
+
+    @skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab')
+    def test_with_2gib_file_should_work_with_linux_v4_16(self):
+        """
+        QEMU has supported up to 4 GiB initrd for recent kernel
+        Expect guest can reach 'Unpacking initramfs...'
+        """
+        kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
+                      '/linux/releases/28/Everything/x86_64/os/images/pxeboot/'
+                      'vmlinuz')
+        kernel_hash = '238e083e114c48200f80d889f7e32eeb2793e02a'
+        kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
+        max_size = 2 * (1024 ** 3) + 1
+
+        with tempfile.NamedTemporaryFile() as initrd:
+            initrd.seek(max_size)
+            initrd.write(b'\0')
+            initrd.flush()
+
+            self.vm.set_console()
+            kernel_command_line = 'console=ttyS0'
+            self.vm.add_args('-kernel', kernel_path,
+                             '-append', kernel_command_line,
+                             '-initrd', initrd.name,
+                             '-m', '5120')
+            self.vm.launch()
+            console = self.vm.console_socket.makefile()
+            console_logger = logging.getLogger('console')
+            while True:
+                msg = console.readline()
+                console_logger.debug(msg.strip())
+                if 'Unpacking initramfs...' in msg:
+                    break
+                if 'Kernel panic - not syncing' in msg:
+                    self.fail("Kernel panic reached")