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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>] [-h]


       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 database.

       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 OpenAFS
       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

           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)

       The OpenAFS Administration Guide at <>.


       IBM Corporation 2000. <> All Rights Reserved.

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