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BDB.DB0(5)		      AFS File Reference		    BDB.DB0(5)

       bdb.DB0,	bdb.DBSYS1 - Contain the Backup	Database and associated	log

       The bdb.DB0 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.

       The bdb.DBSYS1 file is a	log file in which the Backup Server (buserver
       process)	logs each database operation before performing it. When	an
       operation is interrupted, the Backup Server replays the log to complete
       the operation.

       Both files are in binary	format and reside in the /var/openafs/db
       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 bdb.DB0 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.

       Use the commands	in the backup suite to administer the Backup Database.
       It is advisable to create a backup copy of the bdb.DB0 file on tape on
       a regular basis,	using the UNIX tar command or another local disk
       backup utility.

       backup(8), backup_savedb(8), buserver(8)

       IBM Corporation 2000. <> All Rights Reserved.

       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.

OpenAFS				  2016-12-14			    BDB.DB0(5)


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