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       buserver - Initializes the Backup Server


       buserver [-database <database directory>]
           [-auditlog <log path>]
           [-audit-interface (file | sysvmq)]
           [-cellservdb <cell configuration directory>] [-resetdb]
           [-noauth] [-smallht]
           [-servers <list of ubik database servers>+]
           [-p <number of threads>] [-ubikbuffers <# of buffers>]


       The buserver command initializes the Backup Server, which runs on database server machines
       and maintains the Backup Database. In the conventional configuration, the binary file is
       located in the /usr/lib/openafs directory on a file server machine.

       The buserver command is not normally issued at the command shell prompt, but rather placed
       into a database server machine's /etc/openafs/BosConfig file with the bos create command.
       If it is ever issued at the command shell prompt, the issuer must be logged onto a file
       server machine as the local superuser "root".

       As it initializes, the Backup Server process creates the two files that constitute the
       Backup Database, bdb.DB0 and bdb.DBSYS1, in the /var/lib/openafs/db directory if they do
       not already exist. The Backup Database houses information about volume sets and entries,
       the dump hierarchy, Tape Coordinators, and previously performed dump sets. Use the
       commands in the backup suite to administer the database.

       The Backup Server records a trace of its activity in the /var/log/openafs/BackupLog file.
       Use the bos getlog command to display the contents of the file.

       This command does not use the syntax conventions of the AFS command suites. Provide the
       command name and all option names in full.


       The buserver process reserves port 7021 for its use. Unexpected behavior can occur if
       another process tries to reserve this port while the buserver process is running.


       -database <database directory>
           Specifies the pathname of an alternate directory for the Backup Database files, ending
           in a final slash ("/"). If this argument is not provided, the default is the
           /var/lib/openafs/db directory.

       -auditlog <log path>
           Turns on audit logging, and sets the path for the audit log.  The audit log records
           information about RPC calls, including the name of the RPC call, the host that
           submitted the call, the authenticated entity (user) that issued the call, the
           parameters for the call, and if the call succeeded or failed.

       -audit-interface (file | sysvmq)
           Specifies what audit interface to use. Defaults to "file". See fileserver(8) for an
           explanation of each interface.

       -cellservdb <cell configuration directory>
           Specifies the pathname of the directory from which the Backup Server reads in an
           alternate version of the CellServDB file. This argument is mandatory for correct
           functioning when the Backup Server is running on a subset of the cell's database
           server machines that is not a majority of the machines listed in the standard
           /etc/openafs/server/CellServDB file (which the Backup Server consults if this argument
           is not provided). It is not appropriate in any other circumstances.

           Removes all of the information in the Backup Database files in the /var/lib/openafs/db
           directory, leaving zero-length versions of them.  The backup operator must recreate
           the configuration entries in the database (for volume sets, the dump hierarchy and so
           on) before performing backup operations.

           Turns off all authorization checks, and allows all connecting users to act as
           administrators, even unauthenticated users. The use of this option is inherently
           insecure, and should only be used in controlled environments for experimental or debug
           purposes. See NoAuth(5).

           Directs the Backup Server to use smaller internal hash tables for the Backup Database,
           which reduces memory requirements but can make data access take longer.

       -servers <list of ubik database servers>+
           Specifies the database server machines on which to start the Backup Server. Use this
           argument if running the Backup Server on a subset of the database server machines that
           is not a majority of the machines listed in the /etc/openafs/server/CellServDB file.

           Bind the Rx socket to the primary interface only.  (If not specified, the Rx socket
           will listen on all interfaces.)

       -p <number of threads>
           Sets the number of server lightweight processes (LWPs or pthreads) to run.  Provide a
           positive integer from the range 3 to 16. The default value is 3.

       -ubikbuffers <# of buffers>
           Sets the number of internal buffers used for maintaining the ubik database.  The
           default is 400. If the buserver runs out of free buffers, errors can occur while
           trying to modify ubik data. It is not recommended to change this setting.

           Prints the online help for this command. All other valid options are ignored.


       The following example bos create command creates a "buserver" process on the file server
       machine "". It appears here on two lines only for legibility.

          % bos create -server -instance buserver \
                       -type simple -cmd /usr/lib/openafs/buserver


       The issuer must be logged in as the superuser "root" on a file server machine to issue the
       command at a command shell prompt. It is conventional instead to create and start the
       process by issuing the bos create command.


       BackupLog(5), BosConfig(5), CellServDB(5), bdb.DB0(5), backup(8), bos_create(8),


       IBM Corporation 2000. <> All Rights Reserved.

       This documentation is covered by the IBM Public License Version 1.0.  It was converted
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