3 buserver - Initializes the Backup Server
10 B<buserver> S<<< [B<-database> <I<database directory>>] >>>
11 S<<< [B<-cellservdb> <I<cell configuration directory>>] >>> [B<-resetdb>]
12 [B<-noauth>] [B<-smallht>] [-servers <I<list of ubik database servers>>+]
13 [B<-enable_peer_stats>] [-enable_process_stats] [B<-help>]
20 The B<buserver> command initializes the Backup Server, which runs on
21 database server machines and maintains the Backup Database. In the
22 conventional configuration, the binary file is located in the
23 F</usr/afs/bin> directory on a file server machine.
25 The B<buserver> command is not normally issued at the command shell
26 prompt, but rather placed into a database server machine's
27 F</usr/afs/local/BosConfig> file with the B<bos create> command. If it is
28 ever issued at the command shell prompt, the issuer must be logged onto a
29 file server machine as the local superuser C<root>.
31 As it initializes, the Backup Server process creates the two files that
32 constitute the Backup Database, F<bdb.DB0> and F<bdb.DBSYS1>, in the
33 F</usr/afs/db> directory if they do not already exist. The Backup Database
34 houses information about volume sets and entries, the dump hierarchy, Tape
35 Coordinators, and previously performed dump sets. Use the commands in the
36 B<backup> suite to administer the database.
38 The Backup Server records a trace of its activity in the
39 F</usr/afs/logs/BackupLog> file. Use the B<bos getlog> command to display
40 the contents of the file.
42 This command does not use the syntax conventions of the AFS command
43 suites. Provide the command name and all option names in full.
47 The B<buserver> process reserves port 7021 for its use. Unexpected
48 behavior can occur if another process tries to reserve this port while the
49 B<buserver> process is running.
55 =item B<-database> <I<database directory>>
57 Specifies the pathname of an alternate directory for the Backup Database
58 files, ending in a final slash (C</>). If this argument is not provided,
59 the default is the F</usr/afs/db> directory.
61 =item B<-cellservdb> <I<cell configuration directory>>
63 Specifies the pathname of the directory from which the Backup Server reads
64 in an alternate version of the F<CellServDB> file. This argument is
65 mandatory for correct functioning when the Backup Server is running on a
66 subset of the cell's database server machines that is not a majority of
67 the machines listed in the standard F</usr/afs/etc/CellServDB> file (which
68 the Backup Server consults if this argument is not provided). It is not
69 appropriate in any other circumstances.
73 Removes all of the information in the Backup Database files in the
74 F</usr/afs/db> directory, leaving zero-length versions of them. The
75 backup operator must recreate the configuration entries in the database
76 (for volume sets, the dump hierarchy and so on) before performing backup
81 Establishes an unauthenticated connection between the issuer and the
82 Backup Server, in which the Backup Server treats the issuer as the
83 unprivileged user C<anonymous>. It is useful only when authorization
84 checking is disabled on the database server machine. In normal
85 circumstances, the Backup Server allows only authorized (privileged) users
86 to issue commands that affect or contact the Backup Database, and refuses
87 to perform such an action even if the B<-noauth> flag is used.
91 Directs the Backup Server to use smaller internal hash tables for the
92 Backup Database, which reduces memory requirements but can make data
95 =item B<-servers> <I<list of ubik database servers>>+
97 Specifies the database server machines on which to start the Backup
98 Server. Use this argument if running the Backup Server on a subset of the
99 database server machines that is not a majority of the machines listed in
100 the F</usr/afs/etc/CellServDB> file.
102 =item B<-enable_peer_stats>
104 Activates the collection of Rx statistics and allocates memory for their
105 storage. For each connection with a specific UDP port on another machine,
106 a separate record is kept for each type of RPC (FetchFile, GetStatus, and
107 so on) sent or received. To display or otherwise access the records, use
108 the Rx Monitoring API.
110 =item B<-enable_process_stats>
112 Activates the collection of Rx statistics and allocates memory for their
113 storage. A separate record is kept for each type of RPC (FetchFile,
114 GetStatus, and so on) sent or received, aggregated over all connections to
115 other machines. To display or otherwise access the records, use the Rx
120 Prints the online help for this command. All other valid options are
127 The following example B<bos create> command creates a C<buserver> process
128 on the file server machine C<fs3.abc.com>. It appears here on two lines
131 % bos create -server fs3.abc.com -instance buserver \
132 -type simple -cmd /usr/afs/bin/buserver
134 =head1 PRIVILEGE REQUIRED
136 The issuer must be logged in as the superuser C<root> on a file server
137 machine to issue the command at a command shell prompt. It is conventional
138 instead to create and start the process by issuing the B<bos create>
153 IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
155 This documentation is covered by the IBM Public License Version 1.0. It was
156 converted from HTML to POD by software written by Chas Williams and Russ
157 Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.