+
+MPIRUN=$(which mpirun 2>/dev/null) || true
+MPI_USER=${MPI_USER:-mpiuser}
+SHARED_DIR_LOGS=${SHARED_DIR_LOGS:-""}
+
+# This is used by a small number of tests to share state between the client
+# running the tests, or in some cases between the servers (e.g. lfsck.sh).
+# It needs to be a non-lustre filesystem that is available on all the nodes.
+SHARED_DIRECTORY=${SHARED_DIRECTORY:-""} # bug 17839 comment 65