diff -urN a/support/nfs/cacheio.c b/support/nfs/cacheio.c
--- a/support/nfs/cacheio.c     2017-10-23 01:58:52.000000000 -0000
+++ b/support/nfs/cacheio.c     2017-10-23 02:00:28.000000000 -0000
@@ -230,7 +230,8 @@
        };
        now = time(0);
        if (force ||
-           stat(etab.statefn, &stb) != 0 ||
+           // I don't know what this do.
+           // stat(etab.statefn, &stb) != 0 ||
            stb.st_mtime > now)
                stb.st_mtime = time(0);