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+<?xml version="1.0" encoding="iso-8859-1"?>
+<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
+<refentry id="vfs_shadow_copy2.8">
+
+<refmeta>
+ <refentrytitle>vfs_shadow_copy2</refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo class="source">Samba</refmiscinfo>
+ <refmiscinfo class="manual">System Administration tools</refmiscinfo>
+ <refmiscinfo class="version">3.2</refmiscinfo>
+</refmeta>
+
+
+<refnamediv>
+ <refname>vfs_shadow_copy2</refname>
+ <refpurpose>Expose snapshots to Windows clients as shadow copies.</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+ <cmdsynopsis>
+ <command>vfs objects = shadow_copy2</command>
+ </cmdsynopsis>
+</refsynopsisdiv>
+
+<refsect1>
+ <title>DESCRIPTION</title>
+
+ <para>This VFS module is part of the
+ <citerefentry><refentrytitle>samba</refentrytitle>
+ <manvolnum>7</manvolnum></citerefentry> suite.</para>
+
+ <para>The <command>vfs_shadow_copy2</command> VFS module functionality
+ that is similar to Microsoft Shadow Copy services. When setup properly,
+ this module allows Microsoft Shadow Copy clients to browse
+ "shadow copies" on Samba shares.
+ </para>
+
+ <para>This is a 2nd implementation of a shadow copy module. This
+ version has the following features:</para>
+ <orderedlist continuation="restarts" inheritnum="ignore" numeration="arabic">
+ <listitem><para>You don't need to populate your shares with symlinks to the
+ snapshots. This can be very important when you have thousands of
+ shares, or use [homes].</para></listitem>
+ <listitem><para>The inode number of the files is altered so it is different
+ from the original. This allows the 'restore' button to work
+ without a sharing violation.</para></listitem>
+ </orderedlist>
+
+ <para>This module is stackable.</para>
+
+</refsect1>
+
+<refsect1>
+ <title>CONFIGURATION</title>
+
+ <para><command>vfs_shadow_copy2</command> relies on a filesystem
+ snapshot implementation. Many common filesystems have native
+ support for this.
+ </para>
+
+ <para>Filesystem snapshots must be mounted on
+ specially named directories in order to be recognized by
+ <command>vfs_shadow_copy2</command>. The snapshot mount points must
+ be immediate children of a the directory being shared.</para>
+
+ <para>The snapshot naming convention is @GMT-YYYY.MM.DD-hh.mm.ss,
+ where:
+ <itemizedlist>
+ <listitem><para><command>YYYY</command> is the 4 digit year</para></listitem>
+ <listitem><para><command>MM</command> is the 2 digit month</para></listitem>
+ <listitem><para><command>DD</command> is the 2 digit day</para></listitem>
+ <listitem><para><command>hh</command> is the 2 digit hour</para></listitem>
+ <listitem><para><command>mm</command> is the 2 digit minute</para></listitem>
+ <listitem><para><command>ss</command> is the 2 digit second.</para></listitem>
+ </itemizedlist>
+ </para>
+
+ <para>The <command>vfs_shadow_copy2</command> snapshot naming convention can be
+ produced with the following <citerefentry><refentrytitle>date</refentrytitle>
+ <manvolnum>1</manvolnum></citerefentry> command:
+ <programlisting>
+ TZ=GMT date +@GMT-%Y.%m.%d-%H.%M.%S
+ </programlisting></para>
+
+</refsect1>
+
+<refsect1>
+ <title>OPTIONS</title>
+
+ <variablelist>
+ <varlistentry>
+ <term>shadow:snapdir = SNAPDIR
+ </term>
+ <listitem>
+ <para>Path to the directory where snapshots are kept.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>shadow:basedir = BASEDIR
+ </term>
+ <listitem>
+ <para>Path to the base directory that snapshots are from.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>shadow:fixinodes = yes/no
+ </term>
+ <listitem>
+ <para>If you enable <command moreinfo="none">shadow:fixinodes
+ </command> then this module will modify the apparent inode
+ number of files in the snapshot directories using a hash of the
+ files path. This is needed for snapshot systems where the
+ snapshots have the same device:inode number as the original
+ files (such as happens with GPFS snapshots). If you don't set
+ this option then the 'restore' button in the shadow copy UI
+ will fail with a sharing violation.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+</refsect1>
+
+<refsect1>
+ <title>EXAMPLES</title>
+
+ <para>Add shadow copy support to user home directories:</para>
+<programlisting>
+ <smbconfsection name="[homes]"/>
+ <smbconfoption name="vfs objects">shadow_copy2</smbconfoption>
+ <smbconfoption name="shadow:snapdir">/data/snaphots</smbconfoption>
+ <smbconfoption name="shadow:basedir">/data/home</smbconfoption>
+</programlisting>
+
+</refsect1>
+
+<refsect1>
+ <title>CAVEATS</title>
+
+ <para>This is not a backup, archival, or version control solution.
+ </para>
+
+ <para>With Samba or Windows servers,
+ <command>vfs_shadow_copy2</command> is designed to be an end-user
+ tool only. It does not replace or enhance your backup and
+ archival solutions and should in no way be considered as
+ such. Additionally, if you need version control, implement a
+ version control system.</para>
+
+</refsect1>
+
+
+
+<refsect1>
+ <title>VERSION</title>
+
+ <para>This man page is correct for version 3.2.7 of the Samba suite.
+ </para>
+</refsect1>
+
+<refsect1>
+ <title>AUTHOR</title>
+
+ <para>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.</para>
+
+</refsect1>
+
+</refentry>