backup restoredb8backup restoredbRestores a saved copy of the Backup DatabaseSynopsisbackup restoredb [-portoffset <TC port offset>] [-localauth]
[-cell <cell name>] [-help]backup res [-p <TC port offset>] [-l] [-c <cell name>]
[-h]DescriptionThe 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
/usr/afs/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
/usr/afs/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
/usr/afs/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.CautionsIf 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.Options-portoffset <TC port offset>Specifies the port offset number of the Tape Coordinator handling the
tapes for this operation.-localauthConstructs a server ticket using a key from the local
/usr/afs/etc/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).-helpPrints the online help for this command. All other valid options are
ignored.ExamplesThe following example shows the Backup Database being restored from the
Tape Coordinator with port offset 0:
% backup restoredb
Privilege RequiredThe issuer must be listed in the /usr/afs/etc/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.See Alsobutc(5),
backup(8),
backup_dbverify(8),
backup_savedb(8),
butc(8)IBM AFS Administration GuideCopyrightIBM 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.