buserver(8)

NAME

   buserver - Initializes the Backup Server

SYNOPSIS

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

DESCRIPTION

   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.

CAUTIONS

   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.

OPTIONS

   -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.

   -resetdb
       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.

   -noauth
       Establishes an unauthenticated connection between the issuer and
       the Backup Server, in which the Backup Server treats the issuer as
       the unprivileged user "anonymous". It is useful only when
       authorization checking is disabled on the database server machine.
       In normal circumstances, the Backup Server allows only authorized
       (privileged) users to issue commands that affect or contact the
       Backup Database, and refuses to perform such an action even if the
       -noauth flag is used.

   -smallht
       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.

   -enable_peer_stats
       Activates the collection of Rx statistics and allocates memory for
       their storage. For each connection with a specific UDP port on
       another machine, a separate record is kept for each type of RPC
       (FetchFile, GetStatus, and so on) sent or received. To display or
       otherwise access the records, use the Rx Monitoring API.

   -enable_process_stats
       Activates the collection of Rx statistics and allocates memory for
       their storage. A separate record is kept for each type of RPC
       (FetchFile, GetStatus, and so on) sent or received, aggregated over
       all connections to other machines. To display or otherwise access
       the records, use the Rx Monitoring API.

   -rxbind
       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.

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

EXAMPLES

   The following example bos create command creates a "buserver" process
   on the file server machine "fs3.abc.com". It appears here on two lines
   only for legibility.

      % bos create -server fs3.abc.com -instance buserver \
                   -type simple -cmd /usr/lib/openafs/buserver

PRIVILEGE REQUIRED

   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.

SEE ALSO

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

COPYRIGHT

   IBM Corporation 2000. <http://www.ibm.com/> 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.

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