- <para><literal>mds-survey</literal> is available in Lustre software release
- 2.2 and beyond. The <literal>mds-survey</literal> script tests the local
- metadata performance using the echo_client to drive different layers of the
- MDS stack: mdd, mdt, osd (the Lustre software only supports mdd stack). It
- can be used with the following classes of operations:</para>
+ <para>The <literal>mds-survey</literal> script tests the local
+ metadata performance using the <literal>echo_client</literal> to
+ drive the MDD layer of the MDS stack.
+ It can be used with the following classes of operations:</para>