From 6f0fe0f32728dfa781e49451a755d73df5fa6a88 Mon Sep 17 00:00:00 2001
From: Jan Tattermusch <jtattermusch@google.com>
Date: Fri, 6 May 2016 12:16:28 -0700
Subject: [PATCH] fix python distribtests with docker on overlay

---
 test/distrib/python/run_distrib_test.sh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/distrib/python/run_distrib_test.sh b/test/distrib/python/run_distrib_test.sh
index 6196e540c8..a0324a92b1 100755
--- a/test/distrib/python/run_distrib_test.sh
+++ b/test/distrib/python/run_distrib_test.sh
@@ -48,7 +48,10 @@ which $PYTHON || PYTHON=python
 which $PIP || PIP=pip
 
 # TODO(jtattermusch): this shouldn't be required
-${PIP} install --upgrade six pip
+# TODO(jtattermusch): run the command twice to workaround docker-on-overlay
+# issue https://github.com/docker/docker/issues/12327
+# (first attempt will fail when using docker with overlayFS)
+${PIP} install --upgrade six pip || ${PIP} install --upgrade six pip
 
 # At least one of the bdist packages has to succeed (whichever one matches the
 # test machine, anyway).
-- 
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