s3: Document gpfs:syncio

Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Mon May 16 15:00:40 CEST 2011 on sn-devel-104
(cherry picked from commit 3358d5a7cae1c2a99495c38069531fc87fe22b24)

diff --git a/docs-xml/manpages-3/vfs_gpfs.8.xml b/docs-xml/manpages-3/vfs_gpfs.8.xml
index 5f89ffac7791026e3e83f2388e760ace096dc768..a6b31240eea03963bae7c17894449f1ca4c62e26 100644 (file)
--- a/docs-xml/manpages-3/vfs_gpfs.8.xml
+++ b/docs-xml/manpages-3/vfs_gpfs.8.xml
@@ -276,6 +276,26 @@
                </listitem>
                </varlistentry>
 
+               <varlistentry>
+               <term>gpfs:syncio = [yes|no]</term>
+               <listitem>
+               <para>This parameter makes Samba open all files with O_SYNC.
+                 This triggers optimizations in GPFS for workloads that
+                 heavily share files.</para>
+
+               <para>Following is the behaviour of Samba for different
+                 values:
+               </para>
+               <itemizedlist>
+               <listitem><para><command>yes</command>Open files with O_SYNC
+               </para></listitem>
+               <listitem><para><command>no (default)</command>Open files as
+                   normal Samba would do
+               </para></listitem>
+               </itemizedlist>
+               </listitem>
+               </varlistentry>
+
        </variablelist>
 </refsect1>