source: trunk/server/docs-xml/smbdotconf/filename/vetooplockfiles.xml

<samba:parameter name="veto oplock files"
                 context="S"
                                 type="string"
                 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
 <description>
        <para>
        This parameter is only valid when the <smbconfoption name="oplocks"/>
        parameter is turned on for a share. It allows the Samba administrator
        to selectively turn off the granting of oplocks on selected files that
        match a wildcarded list, similar to the wildcarded list used in the
        <smbconfoption name="veto files"/> parameter.
        </para>


        <para>
        You might want to do this on files that you know will be heavily contended 
        for by clients. A good example of this is in the NetBench SMB benchmark 
        program, which causes heavy client contention for files ending in 
        <filename moreinfo="none">.SEM</filename>. To cause Samba not to grant 
        oplocks on these files you would use the line (either in the [global] 
        section or in the section for the particular NetBench share.
        </para>

        <para>
        An example of use is:
<programlisting>
veto oplock files = /.*SEM/
</programlisting>
        </para>
</description>
<value type="default"><comment>No files are vetoed for oplock grants</comment></value>
</samba:parameter>