From b7236db182770dca1c7767e9aed2c8f64756e6fb Mon Sep 17 00:00:00 2001
From: Jan Tattermusch <jtattermusch@google.com>
Date: Mon, 15 May 2017 19:13:35 +0200
Subject: prevent out of disk space error

---
 tools/internal_ci/helper_scripts/prepare_build_linux_rc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/internal_ci/helper_scripts/prepare_build_linux_rc b/tools/internal_ci/helper_scripts/prepare_build_linux_rc
index c8cb5a0c40..7f6e093408 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_linux_rc
+++ b/tools/internal_ci/helper_scripts/prepare_build_linux_rc
@@ -33,6 +33,10 @@
 # Need to increase open files limit for c tests
 ulimit -n 32768
 
+# Move docker's storage location to scratch disk so we don't run out of space.
+echo 'DOCKER_OPTS="${DOCKER_OPTS} --graph=/tmpfs/docker"' | sudo tee --append /etc/default/docker
+sudo service docker restart
+
 # Download Docker images from DockerHub
 export DOCKERHUB_ORGANIZATION=grpctesting
 
-- 
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