oeqa/selftest/devtool: Add sync call to test teardown

Devtool tests are heavy on IO and if bitbake can't write out its caches, we see
timeouts. Call "sync" around the tests to ensure the IO queue doesn't get too
large, taking any IO hit here rather than in bitbake shutdown.

(From OE-Core rev: ce265cf467f1c3e5ba2edbfbef2170df1a727a52)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/meta/lib/oeqa/selftest/cases/devtool.py b/meta/lib/oeqa/selftest/cases/devtool.py
index a3d2e9ea7c..4a791ff40e 100644
--- a/meta/lib/oeqa/selftest/cases/devtool.py
+++ b/meta/lib/oeqa/selftest/cases/devtool.py
@@ -107,6 +107,13 @@ class DevtoolBase(OESelftestTestCase):
                         'under the build directory')
         self.append_config(self.sstate_conf)
 
+    def tearDown(self):
+        # devtools tests are heavy on IO and if bitbake can't write out its caches, we see timeouts.
+        # call sync around the tests to ensure the IO queue doesn't get too large, taking any IO
+        # hit here rather than in bitbake shutdown.
+        super().tearDown()
+        os.system("sync")
+
     def _check_src_repo(self, repo_dir):
         """Check srctree git repository"""
         self.assertTrue(os.path.isdir(os.path.join(repo_dir, '.git')),