From 6d380ae6045a0df312374c0e5de4954f0c1da8fd Mon Sep 17 00:00:00 2001
From: Luca Boccassi <bluca@debian.org>
Date: Fri, 8 Apr 2022 23:52:38 +0100
Subject: [PATCH] networkd-test: lazy umount tmp directories

In Semaphore CI, for some reason, /run/systemd/resolve is busy so the umount
fails at the end of the test run:

Verify link states with Unmanaged= settings, cold-plug. ... umount: /run/systemd/resolve: target is busy.14:57
ok14:57
ERROR14:57
======================================================================14:57
ERROR: tearDownModule (__main__)14:57
----------------------------------------------------------------------14:57
Traceback (most recent call last):14:57
  File /tmp/autopkgtest-lxc.6islza9t/downtmp/build.A9b/src/test/networkd-test.py, line 94, in tearDownModule14:57
    subprocess.check_call([umount, d])14:57
  File /usr/lib/python3.9/subprocess.py, line 373, in check_call14:57
    raise CalledProcessError(retcode, cmd)14:57
subprocess.CalledProcessError: Command '['umount', '/run/systemd/resolve']' returned non-zero exit status 32.14:57
----------------------------------------------------------------------14:58
Ran 35 tests in 138.868s14:58
FAILED (errors=1, skipped=2)

Use lazy umount to avoid erroring out.

(cherry picked from commit 471cac19a6fb3c192faf61d3724db2509643c760)
---
 test/networkd-test.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/networkd-test.py b/test/networkd-test.py
index 60622077a2..f4598c7b7c 100755
--- a/test/networkd-test.py
+++ b/test/networkd-test.py
@@ -91,7 +91,7 @@ def setUpModule():
 def tearDownModule():
     global tmpmounts
     for d in tmpmounts:
-        subprocess.check_call(["umount", d])
+        subprocess.check_call(["umount", "--lazy", d])
     for u in stopped_units:
         subprocess.call(["systemctl", "stop", u])
     for u in running_units: