Index: lib/MogileFS/Worker/Monitor.pm
===================================================================
--- lib/MogileFS/Worker/Monitor.pm	(revision 1149)
+++ lib/MogileFS/Worker/Monitor.pm	(working copy)
@@ -165,7 +165,7 @@
     # first, create the test-write directory.  this will return
     # immediately after the first time, as the 'create_directory'
     # function caches what it's already created.
-    $dev->create_directory("/dev$devid/test-write");
+    $dev->create_directory("/dev$devid/test-write/");
 
     my $num = int(rand 10000);  # this was "$$-$now" before, but we don't yet have a cleaner in mogstored for these files
     my $puturl = "http://$hostip:$port/dev$devid/test-write/test-write-$num";