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       backup_restoredb - Restores a saved copy of the Backup Database


       backup restoredb [-portoffset <TC port offset>] [-localauth]
           [-cell <cell name>] [-help]

       backup res [-p <TC port offset>] [-l] [-c <cell name>]


       The backup restoredb command restores to the Backup Server machine’s
       local disk a version of the Backup Database previously written to tape
       by using the backup savedb command.

       (If the "FILE YES" instruction appears in the
       /var/lib/openafs/backup/CFG_device_name file associated with the
       specified port offset, then the backup restoredb command restores data
       from the backup data file listed for that port offset in the Tape
       Coordinator’s /var/lib/openafs/backup/tapeconfig file, instead of from
       tape. For the sake of clarity, the following text refers to tapes only,
       but the Backup System handles backup data files in much the same way.)

       The most common reason to run this command is to replace a corrupted or
       otherwise damaged Backup Database; use the backup dbverify command to
       determine the database’s status. The command can also be used to
       restore records that were removed from the database when the -archive
       argument was included on a previous backup savedb command.

       The command completely overwrites the existing Backup Database records
       for volume sets, Tape Coordinators, and the dump hierarchy with the
       corresponding information from the saved version. It does not overwrite
       existing dump records, but instead interleaves the records from the
       copy being restored. If both the existing database (on the Backup
       Server machine’s disk) and the copy being restored include a record
       about the same dump, the Backup System retains the one in the existing

       The Tape Coordinator’s default response to this command is to access
       the first tape it needs by invoking the "MOUNT" instruction in the
       local /var/lib/openafs/backup/CFG_device_name file, or by prompting the
       backup operator to insert the tape if there is no "MOUNT" instruction.
       However, if the "AUTOQUERY NO" instruction appears in the
       CFG_device_name file, or if the issuer of the butc command included the
       -noautoquery flag, the Tape Coordinator instead expects the tape to be
       in the device already. If it is not, or is the wrong tape, the Tape
       Coordinator invokes the "MOUNT" instruction or prompts the operator. It
       also invokes the "MOUNT" instruction or prompts for any additional
       tapes needed to complete the restore operation; the backup operator
       must arrange to provide them.


       If the database is corrupted, do not attempt to restore a saved
       database on top of it. Instead, use the instructions for repairing a
       corrupted database in the IBM AFS Administration Guide chapter about
       performing backup operations.


       -portoffset <TC port offset>
           Specifies the port offset number of the Tape Coordinator handling
           the tapes for this operation.

           Constructs a server ticket using a key from the local
           /etc/openafs/server/KeyFile file. The backup command interpreter
           presents it to the Backup Server, Volume Server and VL Server
           during mutual authentication. Do not combine this flag with the
           -cell argument. For more details, see backup(8).

       -cell <cell name>
           Names the cell in which to run the command. Do not combine this
           argument with the -localauth flag. For more details, see backup(8).

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


       The following example shows the Backup Database being restored from the
       Tape Coordinator with port offset 0:

          % backup restoredb


       The issuer must be listed in the /etc/openafs/server/UserList file on
       every machine where the Backup Server is running, or must be logged
       onto a server machine as the local superuser "root" if the -localauth
       flag is included.


       butc(5), backup(8), backup_dbverify(8), backup_savedb(8), butc(8)

       IBM AFS Administration Guide


       IBM Corporation 2000. <> All Rights Reserved.

       This documentation is covered by the IBM Public License Version 1.0.
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       and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.