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5f70221b2c
Change references to the documentation sets that we still ship to reference the OpenAFS manuals instead of the IBM AFS manuals. Remove references to the IBM AFS/DFS Migration documentation, since that doesn't appear to be available anywhere any more, replacing them where relevant to more generic references to the DFS documentation. Add links to docs.openafs.org for mentions of the manuals in SEE ALSO, and standardize on one link format. Replace a few references to the IBM AFS Release Notes with the actual information in those notes, or drop the reference if it doesn't seem particularly useful. Change-Id: Ie9666842f1315891c6a9c37c0424200f4b78bff7 Reviewed-on: http://gerrit.openafs.org/2031 Reviewed-by: Derrick Brashear <shadow@dementia.org> Tested-by: Derrick Brashear <shadow@dementia.org>
128 lines
4.5 KiB
Plaintext
128 lines
4.5 KiB
Plaintext
=head1 NAME
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backup_restoredb - Restores a saved copy of the Backup Database
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=head1 SYNOPSIS
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=for html
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<div class="synopsis">
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B<backup restoredb> S<<< [B<-portoffset> <I<TC port offset>>] >>>
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[B<-localauth>] S<<< [B<-cell> <I<cell name>>] >>> [B<-help>]
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B<backup res> S<<< [B<-p> <I<TC port offset>>] >>>
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[B<-l>] S<<< [B<-c> <I<cell name>>] >>> [B<-h>]
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=for html
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</div>
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=head1 DESCRIPTION
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The B<backup restoredb> command restores to the Backup Server machine's
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local disk a version of the Backup Database previously written to tape by
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using the B<backup savedb> command.
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(If the C<FILE YES> instruction appears in the
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F</usr/afs/backup/CFG_I<device_name>> file associated with the specified
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port offset, then the B<backup restoredb> command restores data from the
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backup data file listed for that port offset in the Tape Coordinator's
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F</usr/afs/backup/tapeconfig> file, instead of from tape. For the sake of
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clarity, the following text refers to tapes only, but the Backup System
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handles backup data files in much the same way.)
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The most common reason to run this command is to replace a corrupted or
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otherwise damaged Backup Database; use the B<backup dbverify> command to
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determine the database's status. The command can also be used to restore
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records that were removed from the database when the B<-archive> argument
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was included on a previous B<backup savedb> command.
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The command completely overwrites the existing Backup Database records for
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volume sets, Tape Coordinators, and the dump hierarchy with the
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corresponding information from the saved version. It does not overwrite
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existing dump records, but instead interleaves the records from the copy
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being restored. If both the existing database (on the Backup Server
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machine's disk) and the copy being restored include a record about the
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same dump, the Backup System retains the one in the existing database.
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The Tape Coordinator's default response to this command is to access the
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first tape it needs by invoking the C<MOUNT> instruction in the local
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F</usr/afs/backup/CFG_I<device_name>> file, or by prompting the backup
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operator to insert the tape if there is no C<MOUNT> instruction. However,
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if the C<AUTOQUERY NO> instruction appears in the F<CFG_I<device_name>>
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file, or if the issuer of the B<butc> command included the B<-noautoquery>
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flag, the Tape Coordinator instead expects the tape to be in the device
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already. If it is not, or is the wrong tape, the Tape Coordinator invokes
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the C<MOUNT> instruction or prompts the operator. It also invokes the
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C<MOUNT> instruction or prompts for any additional tapes needed to
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complete the restore operation; the backup operator must arrange to
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provide them.
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=head1 CAUTIONS
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If the database is corrupted, do not attempt to restore a saved database
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on top of it. Instead, use the instructions for repairing a corrupted
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database in the I<OpenAFS Administration Guide> chapter about performing
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backup operations.
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=head1 OPTIONS
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=over 4
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=item B<-portoffset> <I<TC port offset>>
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Specifies the port offset number of the Tape Coordinator handling the
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tapes for this operation.
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=item B<-localauth>
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Constructs a server ticket using a key from the local
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F</usr/afs/etc/KeyFile> file. The B<backup> command interpreter presents
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it to the Backup Server, Volume Server and VL Server during mutual
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authentication. Do not combine this flag with the B<-cell> argument. For
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more details, see L<backup(8)>.
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=item B<-cell> <I<cell name>>
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Names the cell in which to run the command. Do not combine this argument
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with the B<-localauth> flag. For more details, see L<backup(8)>.
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=item B<-help>
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Prints the online help for this command. All other valid options are
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ignored.
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=back
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=head1 EXAMPLES
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The following example shows the Backup Database being restored from the
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Tape Coordinator with port offset 0:
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% backup restoredb
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=head1 PRIVILEGE REQUIRED
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The issuer must be listed in the F</usr/afs/etc/UserList> file on every
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machine where the Backup Server is running, or must be logged onto a
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server machine as the local superuser C<root> if the B<-localauth> flag is
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included.
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=head1 SEE ALSO
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L<butc(5)>,
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L<backup(8)>,
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L<backup_dbverify(8)>,
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L<backup_savedb(8)>,
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L<butc(8)>
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The I<OpenAFS Administration Guide> at
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L<http://docs.openafs.org/AdminGuide/>.
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=head1 COPYRIGHT
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IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
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This documentation is covered by the IBM Public License Version 1.0. It was
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converted from HTML to POD by software written by Chas Williams and Russ
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Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.
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