source: trunk/server/docs-xml/smbdotconf/tuning/syncalways.xml

<samba:parameter name="sync always"
        context="S"
        type="boolean"
                 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
<description>
    <para>This is a boolean parameter that controls 
    whether writes will always be written to stable storage before 
    the write call returns. If this is <constant>no</constant> then the server will be 
    guided by the client's request in each write call (clients can 
    set a bit indicating that a particular write should be synchronous). 
    If this is <constant>yes</constant> then every write will be followed by a <command moreinfo="none">fsync()
    </command> call to ensure the data is written to disk. Note that 
    the <parameter moreinfo="none">strict sync</parameter> parameter must be set to
    <constant>yes</constant> in order for this parameter to have 
    any effect.</para>
</description>

<related>strict sync</related>

<value type="default">no</value>
</samba:parameter>