build: add script for torturing the VFS

bin/test-repeat-vfs.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+# Thrash the VFS tests
+
+set -e
+
+base=$(dirname $(dirname $(realpath "$0")))
+echo ${base}
+run=${base}/bin/test-repeat.sh
+echo ${run}
+
+testdirs="
+vfs
+vfs/vfscache
+vfs/vfscache/writeback
+vfs/vfscache/downloaders
+cmd/cmount
+"
+
+testdirs="
+cmd/cmount
+"
+
+for testdir in ${testdirs}; do
+    echo "Testing ${testdir}"
+    cd ${base}/${testdir}
+    ${run} -c=100 -race -tags=cmount
+done