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-<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>vfs_gpfs</title><link rel="stylesheet" href="../samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.74.0"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en"><a name="vfs_gpfs.8"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>vfs_gpfs &#8212; gpfs specific samba extensions like acls and prealloc</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="literal">vfs objects = gpfs</code></p></div></div><div class="refsect1" lang="en"><a name="id2522928"></a><h2>DESCRIPTION</h2><p>This VFS module is part of the
+<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>vfs_gpfs</title><link rel="stylesheet" href="../samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.75.2"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" title="vfs_gpfs"><a name="vfs_gpfs.8"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>vfs_gpfs &#8212; gpfs specific samba extensions like acls and prealloc</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="literal">vfs objects = gpfs</code></p></div></div><div class="refsect1" title="DESCRIPTION"><a name="id2528896"></a><h2>DESCRIPTION</h2><p>This VFS module is part of the
<a class="citerefentry" href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a> suite.</p><p>The <code class="literal">gpfs</code> VFS module is the home
for all gpfs extensions that Samba requires for proper integration
with GPFS. It uses the GPL library interfaces provided by GPFS.
</p><p>Currently the gpfs vfs module provides extensions in following areas :
- </p><div class="itemizedlist"><ul type="disc"><li><p>NFSv4 ACL Interfaces with configurable options for GPFS</p></li><li><p>Kernel oplock support on GPFS</p></li><li><p>Lease support on GPFS</p></li></ul></div><p>
+ </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>NFSv4 ACL Interfaces with configurable options for GPFS</p></li><li class="listitem"><p>Kernel oplock support on GPFS</p></li><li class="listitem"><p>Lease support on GPFS</p></li></ul></div><p>
</p><p><code class="literal">NOTE:</code>This module follows the posix-acl behaviour
and hence allows permission stealing via chown. Samba might allow at a later
point in time, to restrict the chown via this module as such restrictions
are the responsibility of the underlying filesystem than of Samba.
- </p><p>This module is stackable.</p></div><div class="refsect1" lang="en"><a name="id2483368"></a><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">nfs4:mode = [ simple | special ]</span></dt><dd><p>
+ </p><p>This module is stackable.</p></div><div class="refsect1" title="OPTIONS"><a name="id2489332"></a><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">nfs4:mode = [ simple | special ]</span></dt><dd><p>
Enable/Disable substitution of special IDs on GPFS. This parameter
should not affect the windows users in anyway. It only ensures that Samba
sets the special IDs - OWNER@ and GROUP@ ( mappings to simple uids )
that are relevant to GPFS.
- </p><p>The following MODEs are understood by the module:</p><div class="itemizedlist"><ul type="disc"><li><p><code class="literal">simple(default)</code> - do not use special IDs in GPFS ACEs</p></li><li><p><code class="literal">special</code> - use special IDs in GPFS ACEs. </p></li></ul></div></dd><dt><span class="term">nfs4:acedup = [dontcare|reject|ignore|merge]</span></dt><dd><p>
+ </p><p>The following MODEs are understood by the module:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="literal">simple(default)</code> - do not use special IDs in GPFS ACEs</p></li><li class="listitem"><p><code class="literal">special</code> - use special IDs in GPFS ACEs. </p></li></ul></div></dd><dt><span class="term">nfs4:acedup = [dontcare|reject|ignore|merge]</span></dt><dd><p>
This parameter configures how Samba handles duplicate ACEs encountered in GPFS ACLs.
GPFS allows/creates duplicate ACE for different bits for same ID.
- </p><p>Following is the behaviour of Samba for different values :</p><div class="itemizedlist"><ul type="disc"><li><p><code class="literal">dontcare (default)</code> - copy the ACEs as they come</p></li><li><p><code class="literal">reject</code> - stop operation and exit with error on ACL set op</p></li><li><p><code class="literal">ignore</code> - don't include the second matching ACE</p></li><li><p><code class="literal">merge</code> - bitwise OR the 2 ace.flag fields and 2 ace.mask fields of the 2 duplicate ACEs into 1 ACE</p></li></ul></div></dd><dt><span class="term">nfs4:chown = [yes|no]</span></dt><dd><p>This parameter allows enabling or disabling the chown supported
+ </p><p>Following is the behaviour of Samba for different values :</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="literal">dontcare (default)</code> - copy the ACEs as they come</p></li><li class="listitem"><p><code class="literal">reject</code> - stop operation and exit with error on ACL set op</p></li><li class="listitem"><p><code class="literal">ignore</code> - don't include the second matching ACE</p></li><li class="listitem"><p><code class="literal">merge</code> - bitwise OR the 2 ace.flag fields and 2 ace.mask fields of the 2 duplicate ACEs into 1 ACE</p></li></ul></div></dd><dt><span class="term">nfs4:chown = [yes|no]</span></dt><dd><p>This parameter allows enabling or disabling the chown supported
by the underlying filesystem. This parameter should be enabled with
care as it might leave your system insecure.</p><p>Some filesystems allow chown as a) giving b) stealing. It is the latter
- that is considered a risk.</p><p>Following is the behaviour of Samba for different values : </p><div class="itemizedlist"><ul type="disc"><li><p><code class="literal">yes</code> - Enable chown if as supported by the under filesystem</p></li><li><p><code class="literal">no (default)</code> - Disable chown</p></li></ul></div></dd></dl></div></div><div class="refsect1" lang="en"><a name="id2483649"></a><h2>EXAMPLES</h2><p>A GPFS mount can be exported via Samba as follows :</p><pre class="programlisting">
+ that is considered a risk.</p><p>Following is the behaviour of Samba for different values : </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="literal">yes</code> - Enable chown if as supported by the under filesystem</p></li><li class="listitem"><p><code class="literal">no (default)</code> - Disable chown</p></li></ul></div></dd></dl></div></div><div class="refsect1" title="EXAMPLES"><a name="id2489621"></a><h2>EXAMPLES</h2><p>A GPFS mount can be exported via Samba as follows :</p><pre class="programlisting">
<em class="parameter"><code>[samba_gpfs_share]</code></em>
<a class="link" href="smb.conf.5.html#VFSOBJECTS" target="_top">vfs objects = gpfs</a>
<a class="link" href="smb.conf.5.html#PATH" target="_top">path = /test/gpfs_mount</a>
<a class="link" href="smb.conf.5.html#NFS4:MODE" target="_top">nfs4: mode = special</a>
<a class="link" href="smb.conf.5.html#NFS4:ACEDUP" target="_top">nfs4: acedup = merge</a>
-</pre></div><div class="refsect1" lang="en"><a name="id2481486"></a><h2>CAVEATS</h2><p>The gpfs gpl libraries are required by <code class="literal">gpfs</code> VFS
+</pre></div><div class="refsect1" title="CAVEATS"><a name="id2487453"></a><h2>CAVEATS</h2><p>The gpfs gpl libraries are required by <code class="literal">gpfs</code> VFS
module during both compilation and runtime.
Also this VFS module is tested to work on SLES 9/10 and RHEL 4.4
- </p></div><div class="refsect1" lang="en"><a name="id2481504"></a><h2>VERSION</h2><p>This man page is correct for version 3.0.25 of the Samba suite.
- </p></div><div class="refsect1" lang="en"><a name="id2481515"></a><h2>AUTHOR</h2><p>The original Samba software and related utilities
+ </p></div><div class="refsect1" title="VERSION"><a name="id2487470"></a><h2>VERSION</h2><p>This man page is correct for version 3.0.25 of the Samba suite.
+ </p></div><div class="refsect1" title="AUTHOR"><a name="id2487481"></a><h2>AUTHOR</h2><p>The original Samba software and related utilities
were created by Andrew Tridgell. Samba is now developed
by the Samba Team as an Open Source project similar
to the way the Linux kernel is developed.</p><p>The GPFS VFS module was created with contributions from