+++ /dev/null
-<?xml version="1.0" encoding="UTF-8"?>
-<refentry id="bdb_DB05">
- <refmeta>
- <refentrytitle>bdb.DB0, bdb.DBSYS1</refentrytitle>
- <manvolnum>5</manvolnum>
- </refmeta>
- <refnamediv>
- <refname>bdb.DB0, bdb.DBSYS1</refname>
- <refpurpose>Contain the Backup Database and associated log</refpurpose>
- </refnamediv>
- <refsect1>
- <title>Description</title>
- <para>The <replaceable>bdb.DB0</replaceable> file contains the Backup Database, which records
- configuration information used by the AFS Backup System along with
- cross-indexed records of the tapes created and volumes dumped using the
- Backup System commands.</para>
-
- <para>The <replaceable>bdb.DBSYS1</replaceable> file is a log file in which the Backup Server
- (<emphasis role="bold">buserver</emphasis> process) logs each database operation before performing
- it. When an operation is interrupted, the Backup Server replays the log to
- complete the operation.</para>
-
- <para>Both files are in binary format and reside in the <replaceable>/usr/afs/db</replaceable> directory
- on each database server machine that runs the Backup Server. When the
- Backup Server starts or restarts on a given machine, it establishes a
- connection with its peers and verifies that its copy of the <replaceable>bdb.DB0</replaceable>
- file matches the copy on the other database server machines. If not, the
- Backup Servers use AFS's distributed database technology, Ubik, to
- distribute to all of the machines the copy of the database with the
- highest version number.</para>
-
- <para>Use the commands in the backup suite to administer the Backup Database. It
- is advisable to create a backup copy of the <replaceable>bdb.DB0</replaceable> file on tape on a
- regular basis, using the UNIX <emphasis role="bold">tar</emphasis> command or another local disk backup
- utility.</para>
-
- </refsect1>
- <refsect1>
- <title>See Also</title>
- <para><link linkend="backup8">backup(8)</link>,
- <link linkend="backup_savedb8">backup_savedb(8)</link>,
- <link linkend="buserver8">buserver(8)</link></para>
-
- </refsect1>
- <refsect1>
- <title>Copyright</title>
- <para>IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.</para>
-
- <para>This documentation is covered by the IBM Public License Version 1.0. It was
- converted from HTML to POD by software written by Chas Williams and Russ
- Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.</para>
-
- </refsect1>
-</refentry>