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<TITLE>Administration Reference</TITLE>
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<A NAME="Top_Of_Page"></A>
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<H1>Administration Reference</H1>
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<HR><P ALIGN="center"> <A HREF="../index.htm"><IMG SRC="../books.gif" BORDER="0" ALT="[Return to Library]"></A> <A HREF="auarf002.htm#ToC"><IMG SRC="../toc.gif" BORDER="0" ALT="[Contents]"></A> <A HREF="auarf124.htm"><IMG SRC="../prev.gif" BORDER="0" ALT="[Previous Topic]"></A> <A HREF="#Bot_Of_Page"><IMG SRC="../bot.gif" BORDER="0" ALT="[Bottom of Topic]"></A> <A HREF="auarf126.htm"><IMG SRC="../next.gif" BORDER="0" ALT="[Next Topic]"></A> <A HREF="auarf284.htm#HDRINDEX"><IMG SRC="../index.gif" BORDER="0" ALT="[Index]"></A> <P>
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<P>
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<H2><A NAME="HDRBUSERVER" HREF="auarf002.htm#ToC_139">buserver</A></H2>
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<A NAME="IDX4685"></A>
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<A NAME="IDX4686"></A>
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<A NAME="IDX4687"></A>
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<P><STRONG>Purpose</STRONG>
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<P>Initializes the Backup Server
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<P><STRONG>Synopsis</STRONG>
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<PRE><B>buserver</B> [<B>-database</B> <<VAR>database directory</VAR>>]
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[<B>-cellservdb</B> <<VAR>cell configuration directory</VAR>>]
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[<B>-resetdb</B>] [<B>-noauth</B>] [<B>-smallht</B>]
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[<B>-servers</B> <<VAR>list of ubik database servers</VAR>><SUP>+</SUP>]
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[<B>-enable_peer_stats</B>] [<B>-enable_process_stats</B>]
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[<B>-help</B>]
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</PRE>
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<P>This command does not use the syntax conventions of the AFS command
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suites. Provide the command name and all option names in full.
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<P><STRONG>Description</STRONG>
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<P>The <B>buserver</B> command initializes the Backup Server, which runs
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on database server machines and maintains the Backup Database. In the
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conventional configuration, the binary file is located in the
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<B>/usr/afs/bin</B> directory on a file server machine.
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<P>The <B>buserver</B> command is not normally issued at the command shell
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prompt, but rather placed into a database server machine's
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<B>/usr/afs/local/BosConfig</B> file with the <B>bos create</B>
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command. If it is ever issued at the command shell prompt, the issuer
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must be logged onto a file server machine as the local superuser
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<B>root</B>.
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<P>As it initializes, the Backup Server process creates the two files that
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constitute the Backup Database, <B>bdb.DB0</B> and
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<B>bdb.DBSYS1</B>, in the <B>/usr/afs/db</B> directory if they
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do not already exist. The Backup Database houses information about
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volume sets and entries, the dump hierarchy, Tape Coordinators, and previously
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performed dump sets. Use the commands in the <B>backup</B> suite to
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administer the database.
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<P>The Backup Server records a trace of its activity in the
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<B>/usr/afs/logs/BackupLog</B> file. Use the <B>bos getlog</B>
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command to display the contents of the file.
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<P><STRONG>Cautions</STRONG>
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<P>The <B>buserver</B> process reserves port <B>7021</B> for its
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use. Unexpected behavior can occur if another process tries to reserve
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this port while the <B>buserver</B> process is running.
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<P><STRONG>Options</STRONG>
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<DL>
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<P><DT><B>-database
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</B><DD>Specifies the pathname of an alternate directory for the Backup Database
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files, ending in a final slash (<B>/</B>). If this argument is not
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provided, the default is the <B>/usr/afs/db</B> directory.
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<P><DT><B>-cellservdb
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</B><DD>Specifies the pathname of the directory from which the Backup Server reads
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in an alternate version of the <B>CellServDB</B> file. This
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argument is mandatory for correct functioning when the Backup Server is
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running on a subset of the cell's database server machines that is not a
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majority of the machines listed in the standard
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<B>/usr/afs/etc/CellServDB</B> file (which the Backup Server consults if
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this argument is not provided). It is not appropriate in any other
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circumstances.
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<P><DT><B>-resetdb
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</B><DD>Removes all of the information in the Backup Database files in the
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<B>/usr/afs/db</B> directory, leaving zero-length versions of them.
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The backup operator must recreate the configuration entries in the database
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(for volume sets, the dump hierarchy and so on) before performing backup
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operations.
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<P><DT><B>-noauth
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</B><DD>Establishes an unauthenticated connection between the issuer and the
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Backup Server, in which the Backup Server treats the issuer as the
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unprivileged user <B>anonymous</B>. It is useful only when
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authorization checking is disabled on the database server machine. In
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normal circumstances, the Backup Server allows only authorized (privileged)
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users to issue commands that affect or contact the Backup Database, and
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refuses to perform such an action even if the <B>-noauth</B> flag is
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used.
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<P><DT><B>-smallht
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</B><DD>Directs the Backup Server to use smaller internal hash tables for the
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Backup Database, which reduces memory requirements but can make data access
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take longer.
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<P><DT><B>-servers
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</B><DD>Specifies the database server machines on which to start the Backup
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Server. Use this argument if running the Backup Server on a subset of
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the database server machines that is not a majority of the machines listed in
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the <B>/usr/afs/etc/CellServDB</B> file.
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<P><DT><B>-enable_peer_stats
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</B><DD>Activates the collection of Rx statistics and allocates memory for their
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storage. For each connection with a specific UDP port on another
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machine, a separate record is kept for each type of RPC (FetchFile, GetStatus,
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and so on) sent or received. To display or otherwise access the
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records, use the Rx Monitoring API.
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<P><DT><B>-enable_process_stats
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</B><DD>Activates the collection of Rx statistics and allocates memory for their
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storage. A separate record is kept for each type of RPC (FetchFile,
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GetStatus, and so on) sent or received, aggregated over all connections to
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other machines. To display or otherwise access the records, use the Rx
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Monitoring API.
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<P><DT><B>-help
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</B><DD>Prints the online help for this command. All other valid options
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are ignored.
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</DL>
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<P><STRONG>Examples</STRONG>
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<P>The following example <B>bos create</B> command creates a
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<B>buserver</B> process on the file server machine
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<B>fs3.abc.com</B>. It appears here on two lines only
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for legibility.
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<PRE> % <B>bos create -server fs3.abc.com -instance buserver</B> \
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<B>-type simple -cmd /usr/afs/bin/buserver</B>
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</PRE>
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<P><STRONG>Privilege Required</STRONG>
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<P>The issuer must be logged in as the superuser <B>root</B> on a file
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server machine to issue the command at a command shell prompt. It is
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conventional instead to create and start the process by issuing the <B>bos
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create</B> command.
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<P><STRONG>Related Information</STRONG>
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<P><A HREF="auarf014.htm#HDRBACKUPLOG">BackupLog</A>
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<P><A HREF="auarf016.htm#HDRBOSCONFIG">BosConfig</A>
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<P><A HREF="auarf020.htm#HDRSV_CSDB">CellServDB (server version)</A>
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<P><A HREF="auarf042.htm#HDRBDBDB">bdb.DB0 and bdb.DBSYS1</A>
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<P><A HREF="auarf060.htm#HDRBK_INTRO">backup</A>
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<P><A HREF="auarf098.htm#HDRBOS_CREATE">bos create</A>
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<P><A HREF="auarf102.htm#HDRBOS_GETLOG">bos getlog</A>
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<P>
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<HR><P ALIGN="center"> <A HREF="../index.htm"><IMG SRC="../books.gif" BORDER="0" ALT="[Return to Library]"></A> <A HREF="auarf002.htm#ToC"><IMG SRC="../toc.gif" BORDER="0" ALT="[Contents]"></A> <A HREF="auarf124.htm"><IMG SRC="../prev.gif" BORDER="0" ALT="[Previous Topic]"></A> <A HREF="#Top_Of_Page"><IMG SRC="../top.gif" BORDER="0" ALT="[Top of Topic]"></A> <A HREF="auarf126.htm"><IMG SRC="../next.gif" BORDER="0" ALT="[Next Topic]"></A> <A HREF="auarf284.htm#HDRINDEX"><IMG SRC="../index.gif" BORDER="0" ALT="[Index]"></A> <P>
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