2005-12-08 12:14:33 +00:00
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=head1 NAME
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2005-12-14 01:30:20 +00:00
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bdb.DB0, bdb.DBSYS1 - Contain the Backup Database and associated log
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2005-12-08 12:14:33 +00:00
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=head1 DESCRIPTION
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2005-12-14 01:30:20 +00:00
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The F<bdb.DB0> file contains the Backup Database, which records
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configuration information used by the AFS Backup System along with
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cross-indexed records of the tapes created and volumes dumped using the
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Backup System commands.
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The F<bdb.DBSYS1> file is a log file in which the Backup Server
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(B<buserver> process) logs each database operation before performing
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it. When an operation is interrupted, the Backup Server replays the log to
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complete the operation.
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Both files are in binary format and reside in the F</usr/afs/db> directory
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on each database server machine that runs the Backup Server. When the
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Backup Server starts or restarts on a given machine, it establishes a
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connection with its peers and verifies that its copy of the F<bdb.DB0>
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file matches the copy on the other database server machines. If not, the
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Backup Servers use AFS's distributed database technology, Ubik, to
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distribute to all of the machines the copy of the database with the
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highest version number.
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Use the commands in the backup suite to administer the Backup Database. It
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is advisable to create a backup copy of the F<bdb.DB0> file on tape on a
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regular basis, using the UNIX B<tar> command or another local disk backup
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utility.
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2005-12-08 12:14:33 +00:00
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=head1 SEE ALSO
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2005-12-14 01:30:20 +00:00
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L<backup(8)>,
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L<backup_savedb(8)>,
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L<buserver(8)>
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2005-12-08 12:14:33 +00:00
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=head1 COPYRIGHT
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IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
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This documentation is covered by the IBM Public License Version 1.0. It was
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converted from HTML to POD by software written by Chas Williams and Russ
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Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.
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