smoketest: T7948: always verify FRRs mgmtd PID is unchanged

Upgrades to FRR 10.4 have shown that there are cases where FRRs mgmtd will
SIGSEGV - to cover for this case and fail the smoketests we will monitor the
PID of the mgmtd process.

1 files changed, 5 insertions, 0 deletions

diff --git a/smoketest/scripts/cli/test_interfaces_loopback.py b/smoketest/scripts/cli/test_interfaces_loopback.py
index 6cc0d4dbe..f3a3602d1 100755
--- a/smoketest/scripts/cli/test_interfaces_loopback.py
+++ b/smoketest/scripts/cli/test_interfaces_loopback.py
@@ -21,7 +21,9 @@ from base_interfaces_test import BasicInterfaceTest
 from base_interfaces_test import MSG_TESTCASE_UNSUPPORTED
 from base_vyostest_shim import VyOSUnitTestSHIM
 
+from vyos.frrender import mgmt_daemon
 from vyos.utils.network import is_intf_addr_assigned
+from vyos.utils.process import process_named_running
 
 loopbacks = ['127.0.0.1', '::1']
 
@@ -44,6 +46,9 @@ class LoopbackInterfaceTest(BasicInterfaceTest.TestCase):
         for intf in self._interfaces:
             self.assertIn(intf, interfaces())
 
+        # check process health and continuity
+        self.assertEqual(self.mgmt_daemon_pid, process_named_running(mgmt_daemon))
+
     def test_add_single_ip_address(self):
         super().test_add_single_ip_address()
         for addr in loopbacks: