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diff --git a/src/ceph/src/test/osd/TestECBackend.cc b/src/ceph/src/test/osd/TestECBackend.cc
new file mode 100644
index 0000000..affff36
--- /dev/null
+++ b/src/ceph/src/test/osd/TestECBackend.cc
@@ -0,0 +1,60 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2013 Inktank Storage, Inc.
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include <iostream>
+#include <sstream>
+#include <errno.h>
+#include <signal.h>
+#include "osd/ECBackend.h"
+#include "gtest/gtest.h"
+
+TEST(ECUtil, stripe_info_t)
+{
+  const uint64_t swidth = 4096;
+  const uint64_t ssize = 4;
+
+  ECUtil::stripe_info_t s(ssize, swidth);
+  ASSERT_EQ(s.get_stripe_width(), swidth);
+
+  ASSERT_EQ(s.logical_to_next_chunk_offset(0), 0u);
+  ASSERT_EQ(s.logical_to_next_chunk_offset(1), s.get_chunk_size());
+  ASSERT_EQ(s.logical_to_next_chunk_offset(swidth - 1),
+	    s.get_chunk_size());
+
+  ASSERT_EQ(s.logical_to_prev_chunk_offset(0), 0u);
+  ASSERT_EQ(s.logical_to_prev_chunk_offset(swidth), s.get_chunk_size());
+  ASSERT_EQ(s.logical_to_prev_chunk_offset((swidth * 2) - 1),
+	    s.get_chunk_size());
+
+  ASSERT_EQ(s.logical_to_next_stripe_offset(0), 0u);
+  ASSERT_EQ(s.logical_to_next_stripe_offset(swidth - 1),
+	    s.get_stripe_width());
+
+  ASSERT_EQ(s.logical_to_prev_stripe_offset(swidth), s.get_stripe_width());
+  ASSERT_EQ(s.logical_to_prev_stripe_offset(swidth), s.get_stripe_width());
+  ASSERT_EQ(s.logical_to_prev_stripe_offset((swidth * 2) - 1),
+	    s.get_stripe_width());
+
+  ASSERT_EQ(s.aligned_logical_offset_to_chunk_offset(2*swidth),
+	    2*s.get_chunk_size());
+  ASSERT_EQ(s.aligned_chunk_offset_to_logical_offset(2*s.get_chunk_size()),
+	    2*s.get_stripe_width());
+
+  ASSERT_EQ(s.aligned_offset_len_to_chunk(make_pair(swidth, 10*swidth)),
+	    make_pair(s.get_chunk_size(), 10*s.get_chunk_size()));
+
+  ASSERT_EQ(s.offset_len_to_stripe_bounds(make_pair(swidth-10, (uint64_t)20)),
+            make_pair((uint64_t)0, 2*swidth));
+}
+