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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
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. <http://www.ibm.com/> All Rights Reserved.
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