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, 81 insertions, 0 deletions

diff --git a/tests/avocado/migration.py b/tests/avocado/migration.py
new file mode 100644
index 000000000..584d6ef53
--- /dev/null
+++ b/tests/avocado/migration.py
@@ -0,0 +1,81 @@
+# Migration test
+#
+# Copyright (c) 2019 Red Hat, Inc.
+#
+# Authors:
+#  Cleber Rosa <crosa@redhat.com>
+#  Caio Carrara <ccarrara@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 tempfile
+from avocado_qemu import QemuSystemTest
+from avocado import skipUnless
+
+from avocado.utils import network
+from avocado.utils import wait
+from avocado.utils.path import find_command
+
+
+class Migration(QemuSystemTest):
+    """
+    :avocado: tags=migration
+    """
+
+    timeout = 10
+
+    @staticmethod
+    def migration_finished(vm):
+        return vm.command('query-migrate')['status'] in ('completed', 'failed')
+
+    def assert_migration(self, src_vm, dst_vm):
+        wait.wait_for(self.migration_finished,
+                      timeout=self.timeout,
+                      step=0.1,
+                      args=(src_vm,))
+        wait.wait_for(self.migration_finished,
+                      timeout=self.timeout,
+                      step=0.1,
+                      args=(dst_vm,))
+        self.assertEqual(src_vm.command('query-migrate')['status'], 'completed')
+        self.assertEqual(dst_vm.command('query-migrate')['status'], 'completed')
+        self.assertEqual(dst_vm.command('query-status')['status'], 'running')
+        self.assertEqual(src_vm.command('query-status')['status'],'postmigrate')
+
+    def do_migrate(self, dest_uri, src_uri=None):
+        dest_vm = self.get_vm('-incoming', dest_uri)
+        dest_vm.add_args('-nodefaults')
+        dest_vm.launch()
+        if src_uri is None:
+            src_uri = dest_uri
+        source_vm = self.get_vm()
+        source_vm.add_args('-nodefaults')
+        source_vm.launch()
+        source_vm.qmp('migrate', uri=src_uri)
+        self.assert_migration(source_vm, dest_vm)
+
+    def _get_free_port(self):
+        port = network.find_free_port()
+        if port is None:
+            self.cancel('Failed to find a free port')
+        return port
+
+
+    def test_migration_with_tcp_localhost(self):
+        dest_uri = 'tcp:localhost:%u' % self._get_free_port()
+        self.do_migrate(dest_uri)
+
+    def test_migration_with_unix(self):
+        with tempfile.TemporaryDirectory(prefix='socket_') as socket_path:
+            dest_uri = 'unix:%s/qemu-test.sock' % socket_path
+            self.do_migrate(dest_uri)
+
+    @skipUnless(find_command('nc', default=False), "'nc' command not found")
+    def test_migration_with_exec(self):
+        """The test works for both netcat-traditional and netcat-openbsd packages."""
+        free_port = self._get_free_port()
+        dest_uri = 'exec:nc -l localhost %u' % free_port
+        src_uri = 'exec:nc localhost %u' % free_port
+        self.do_migrate(dest_uri, src_uri)