integration-tests: Avoid udev lockup

Running umount of ntfs-3g mounts in a different cpu controller cgroup than udev
causes uninterruptible lockups: https://launchpad.net/bugs/1398859

Avoid those by ensuring that we run in the root cgroup.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/tests/integration-test b/src/tests/integration-test
index 9ccd65a..88c2256 100755
--- a/src/tests/integration-test
+++ b/src/tests/integration-test
@@ -1352,6 +1352,14 @@ if __name__ == '__main__':
                            help='name of test class or method (e. g. "Drive", "FS.test_ext2")')
     args = argparser.parse_args()
 
+    # don't run commands in a different cpu cgroup than udev, otherwise we get
+    # strange hangs (https://launchpad.net/bugs/1398859)
+    try:
+        with open('/sys/fs/cgroup/cpu,cpuacct/tasks', 'w') as f:
+            f.write(str(os.getpid()))
+    except IOError:
+        pass
+
     UDisksTestCase.init(logfile=args.logfile)
     if args.testname:
         tests = unittest.TestLoader().loadTestsFromNames(