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1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>vfs_shadow_copy</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.68.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en"><a name="vfs_shadow_copy.8"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>vfs_shadow_copy &#8212; Make a Samba share read only for a specified time period</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">vfs objects = shadow_copy</code> </p></div></div><div class="refsect1" lang="en"><a name="id263118"></a><h2>DESCRIPTION</h2><p>This VFS module is part of the
2        <a href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a> suite.</p><p>The <span><strong class="command">vfs_shadow_copy</strong></span> VFS module functionality
3        that is similar to Microsoft Shadow Copy services. When setup properly,
4        this module allows Microsoft Shadow Copy clients to browse
5        "shadow copies" on Samba shares.
6        </p><p>This module is stackable.</p></div><div class="refsect1" lang="en"><a name="id230793"></a><h2>CONFIGURATION</h2><p><span><strong class="command">vfs_shadow_copy</strong></span> relies on a filesystem
7        snapshot implementation. Many common filesystems have native
8        support for this.
9        </p><p>Filesystem snapshots must be mounted on
10        specially named directories in order to be recognized by
11        <span><strong class="command">vfs_shadow_copy</strong></span>. The snapshot mount points must
12        be immediate children of a the directory being shared.</p><p>The snapshot naming convention is @GMT-YYYY.MM.DD-hh.mm.ss,
13        where:
14        </p><div class="itemizedlist"><ul type="disc"><li><p><span><strong class="command">YYYY</strong></span> is the 4 digit year</p></li><li><p><span><strong class="command">MM</strong></span> is the 2 digit month</p></li><li><p><span><strong class="command">DD</strong></span> is the 2 digit day</p></li><li><p><span><strong class="command">hh</strong></span> is the 2 digit hour</p></li><li><p><span><strong class="command">mm</strong></span> is the 2 digit minute</p></li><li><p><span><strong class="command">ss</strong></span> is the 2 digit second.</p></li></ul></div><p>
15        </p><p>The <span><strong class="command">vfs_shadow_copy</strong></span> snapshot naming convention can be produced with the following
16        <a href="date.1.html"><span class="citerefentry"><span class="refentrytitle">date</span>(1)</span></a> command:
17        </p><pre class="programlisting">
18        TZ=GMT date +@GMT-%Y.%m.%d-%H.%M.%S
19        </pre></div><div class="refsect1" lang="en"><a name="id231428"></a><h2>EXAMPLES</h2><p>Add shadow copy support to user home directories:</p><pre class="programlisting">
20        <em class="parameter"><code>[homes]</code></em>
21        <a class="indexterm" name="id231447"></a>vfs objects = shadow_copy
22</pre></div><div class="refsect1" lang="en"><a name="id231456"></a><h2>CAVEATS</h2><p>This is not a backup, archival, or version control solution.
23        </p><p>With Samba or Windows servers,
24        <span><strong class="command">vfs_shadow_copy</strong></span> is designed to be an end-user
25        tool only. It does not replace or enhance your backup and
26        archival solutions and should in no way be considered as
27        such. Additionally, if you need version control, implement a
28        version control system.</p></div><div class="refsect1" lang="en"><a name="id231478"></a><h2>VERSION</h2><p>This man page is correct for version 3.0.25 of the Samba suite.
29        </p></div><div class="refsect1" lang="en"><a name="id231489"></a><h2>AUTHOR</h2><p>The original Samba software and related utilities
30        were created by Andrew Tridgell. Samba is now developed
31        by the Samba Team as an Open Source project similar
32        to the way the Linux kernel is developed.</p></div></div></body></html>
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