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authorvorlon <vorlon@alioth.debian.org>2009-02-14 17:29:27 +0000
committervorlon <vorlon@alioth.debian.org>2009-02-14 17:29:27 +0000
commit29cc33a9f2824fb3a9a842a6e3003771c95d1b90 (patch)
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downloadsamba-29cc33a9f2824fb3a9a842a6e3003771c95d1b90.tar.gz
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+<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>vfs_shadow_copy2</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_shadow_copy2.8"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>vfs_shadow_copy2 &#8212; Expose snapshots to Windows clients as shadow copies.</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="literal">vfs objects = shadow_copy2</code></p></div></div><div class="refsect1" lang="en"><a name="id2522930"></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">vfs_shadow_copy2</code> 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.
+ </p><p>This is a 2nd implementation of a shadow copy module. This
+ version has the following features:</p><div class="orderedlist"><ol type="1"><li><p>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].</p></li><li><p>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.</p></li></ol></div><p>This module is stackable.</p></div><div class="refsect1" lang="en"><a name="id2483366"></a><h2>CONFIGURATION</h2><p><code class="literal">vfs_shadow_copy2</code> relies on a filesystem
+ snapshot implementation. Many common filesystems have native
+ support for this.
+ </p><p>Filesystem snapshots must be mounted on
+ specially named directories in order to be recognized by
+ <code class="literal">vfs_shadow_copy2</code>. The snapshot mount points must
+ be immediate children of a the directory being shared.</p><p>The snapshot naming convention is @GMT-YYYY.MM.DD-hh.mm.ss,
+ where:
+ </p><div class="itemizedlist"><ul type="disc"><li><p><code class="literal">YYYY</code> is the 4 digit year</p></li><li><p><code class="literal">MM</code> is the 2 digit month</p></li><li><p><code class="literal">DD</code> is the 2 digit day</p></li><li><p><code class="literal">hh</code> is the 2 digit hour</p></li><li><p><code class="literal">mm</code> is the 2 digit minute</p></li><li><p><code class="literal">ss</code> is the 2 digit second.</p></li></ul></div><p>
+ </p><p>The <code class="literal">vfs_shadow_copy2</code> snapshot naming convention can be
+ produced with the following <a class="citerefentry" href="date.1.html"><span class="citerefentry"><span class="refentrytitle">date</span>(1)</span></a> command:
+ </p><pre class="programlisting">
+ TZ=GMT date +@GMT-%Y.%m.%d-%H.%M.%S
+ </pre></div><div class="refsect1" lang="en"><a name="id2483590"></a><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">shadow:snapdir = SNAPDIR
+ </span></dt><dd><p>Path to the directory where snapshots are kept.
+ </p></dd><dt><span class="term">shadow:basedir = BASEDIR
+ </span></dt><dd><p>Path to the base directory that snapshots are from.
+ </p></dd><dt><span class="term">shadow:fixinodes = yes/no
+ </span></dt><dd><p>If you enable <code class="literal">shadow:fixinodes
+ </code> 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.
+ </p></dd></dl></div></div><div class="refsect1" lang="en"><a name="id2483657"></a><h2>EXAMPLES</h2><p>Add shadow copy support to user home directories:</p><pre class="programlisting">
+ <em class="parameter"><code>[homes]</code></em>
+ <a class="link" href="smb.conf.5.html#VFSOBJECTS" target="_top">vfs objects = shadow_copy2</a>
+ <a class="link" href="smb.conf.5.html#SHADOW:SNAPDIR" target="_top">shadow:snapdir = /data/snaphots</a>
+ <a class="link" href="smb.conf.5.html#SHADOW:BASEDIR" target="_top">shadow:basedir = /data/home</a>
+</pre></div><div class="refsect1" lang="en"><a name="id2481488"></a><h2>CAVEATS</h2><p>This is not a backup, archival, or version control solution.
+ </p><p>With Samba or Windows servers,
+ <code class="literal">vfs_shadow_copy2</code> 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.</p></div><div class="refsect1" lang="en"><a name="id2481511"></a><h2>VERSION</h2><p>This man page is correct for version 3.2.7 of the Samba suite.
+ </p></div><div class="refsect1" lang="en"><a name="id2481522"></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></div></div></body></html>