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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<refentry id="tdbbackup.8">
<refentryinfo><date>2015-04-25</date></refentryinfo>

<refmeta>
	<refentrytitle>tdbbackup</refentrytitle>
	<manvolnum>8</manvolnum>
	<refmiscinfo class="source">Samba</refmiscinfo>
	<refmiscinfo class="manual">System Administration tools</refmiscinfo>
	<refmiscinfo class="version">3.6</refmiscinfo>
</refmeta>


<refnamediv>
	<refname>tdbbackup</refname>
	<refpurpose>tool for backing up and for validating the integrity of samba .tdb files</refpurpose>
</refnamediv>

<refsynopsisdiv>
	<cmdsynopsis>
		<command>tdbbackup</command>
		<arg choice="opt">-s suffix</arg>
		<arg choice="opt">-v</arg>
		<arg choice="opt">-h</arg>
		<arg choice="opt">-n hashsize</arg>
		<arg choice="opt">-l</arg>
	</cmdsynopsis>
</refsynopsisdiv>

<refsect1>
	<title>DESCRIPTION</title>

	<para>This tool is part of the <citerefentry><refentrytitle>samba</refentrytitle>
	<manvolnum>1</manvolnum></citerefentry> suite.</para>

	<para><command>tdbbackup</command> is a tool that may be used to backup samba .tdb
	files. This tool may also be used to verify the integrity of the .tdb files prior
	to samba startup or during normal operation. If it finds file damage and it finds
	a prior backup the backup file will be restored.
	</para>
</refsect1>


<refsect1>
	<title>OPTIONS</title>

	<variablelist>

		<varlistentry>
		<term>-h</term>
		<listitem><para>
		Get help information.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>-s suffix</term>
		<listitem><para>
		The <command>-s</command> option allows the administrator to specify a file
		backup extension. This way it is possible to keep a history of tdb backup
		files by using a new suffix for each backup.
		</para> </listitem>
		</varlistentry>

		<varlistentry>
		<term>-v</term>
		<listitem><para>
		The <command>-v</command> will check the database for damages (corrupt data)
		which if detected causes the backup to be restored.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>-n hashsize</term>
		<listitem><para>
		The <command>-n</command> option sets the hash size for the new backup tdb.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>-l</term>
		<listitem><para>
		This options disables any locking, by passing TDB_NOLOCK
		to tdb_open_ex(). Only use this for database files which
		are not used by any other process! And also only if it is otherwise not
		possible to open the database, e.g. databases which were created with
		mutex locking.
		</para></listitem>
		</varlistentry>

	</variablelist>
</refsect1>


<refsect1>
	<title>COMMANDS</title>

	<para><emphasis>GENERAL INFORMATION</emphasis></para>

	<para>
	The <command>tdbbackup</command> utility can safely be run at any time. It was designed so
	that it can be used at any time to validate the integrity of tdb files, even during Samba
	operation. Typical usage for the command will be:
	</para>

	<para>tdbbackup [-s suffix] *.tdb</para>

	<para>
	Before restarting samba the following command may be run to validate .tdb files:
	</para>

	<para>tdbbackup -v [-s suffix] *.tdb</para>

	<para>
	Samba .tdb files are stored in various locations, be sure to run backup all
	.tdb file on the system. Important files includes:
	</para>

	<itemizedlist>
		<listitem><para>
		<command>secrets.tdb</command> - usual location is in the /usr/local/samba/private
		directory, or on some systems in /etc/samba.
		</para></listitem>

		<listitem><para>
		<command>passdb.tdb</command> - usual location is in the /usr/local/samba/private
		directory, or on some systems in /etc/samba.
		</para></listitem>

		<listitem><para>
		<command>*.tdb</command> located in the /usr/local/samba/var directory or on some
		systems in the /var/cache or /var/lib/samba directories.
		</para></listitem>
	</itemizedlist>

</refsect1>

<refsect1>
	<title>VERSION</title>

	<para>This man page is correct for version 3 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>

	<para>The tdbbackup man page was written by John H Terpstra.</para>
</refsect1>

</refentry>
