backup_savedb - Creates a saved copy of the Backup Database
backup savedb [-portoffset <TC port offset>]
[-archive <date time>+] [-localauth]
[-cell <cell name>] [-help]
backup sa [-p <TC port offset>] [-a <date time>+]
[-l] [-c <cell name>] [-h]
The backup savedb command creates a backup copy of the entire Backup
Database and writes it to the tape in the device controlled by the Tape
Coordinator indicated with the -portoffset argument. If the database is
damaged (as reported by the backup dbverify command), this command
repairs as much of the corruption as possible as it creates the saved
copy. The Backup Server creates a dump record for the saved database in
the Backup Database (but in the disk version of the database only, not
in the version written to tape).
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 savedb command dumps the
database copy to the backup data file listed for that port offset in
the Tape Coordinator’s /var/lib/openafs/backup/tapeconfig file, instead
of to 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
If the -archive flag is provided, after writing the saved copy of the
database the Backup System truncates the copy of the database on disk
by deleting volume dump records with timestamps prior to the specified
date and time (it does not delete the dump records created by previous
backup savedb commands, however).
If the tape to which the database copy is written has an AFS tape name,
it must be "Ubik_db_dump.1" or "<NULL>". Any permanent name is
The Tape Coordinator’s default response to this command is to access
the first tape 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, 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 operation; the backup operator must arrange to provide
-portoffset <TC port offset>
Specifies the port offset number of the Tape Coordinator handling
the tapes for this operation.
-archive <date time>+
Specifies a date and time; volume dump records with earlier
timestamps are deleted from the disk copy of the Backup Database
after the Backup System dumps the database (a dump’s timestamp
appears in the "created" field of the output from the backup
dumpinfo command). However, if a dump set contains any dump created
after the specified date, none of the dump records associated with
the dump set are deleted. Dump records for previous dumps of the
database (created with the backup savedb command) are never
deleted; use the backup deletedump command to remove them.
Provide one of two values:
· The string "NOW" to indicate the current date and time, in
which case the Backup System deletes all dump records except
those for dumps of the Backup Database itself.
· A date value in the format mm/dd/yyyy [hh:MM]. The month (mm),
day (dd), and year (yyyy) are required, and valid values for
the year range from 1970 to 2037; higher values are not valid
because the latest possible date in the standard UNIX
representation is in February 2038. The Backup System
automatically reduces any later date to the maximum value.
The hour and minutes (hh:MM) are optional, but if provided must
be in 24-hour format (for example, the value "14:36" represents
2:36 p.m.). If omitted, the time defaults to 59 seconds after
midnight (00:00:59 hours). Similarly, the backup command
interpreter automatically adds 59 seconds to any time value
provided. In both cases, adding 59 seconds compensates for how
the Backup Database and backup dumpinfo command represent dump
creation times in hours and minutes only. That is, the Database
records a creation timestamp of "20:55" for any dump created
between 20:55:00 and 20:55:59. Automatically adding 59 seconds
to a time thus includes the records for all dumps created
during that minute.
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 writes a copy of the Backup Database to the tape
device controlled by the Tape Coordinator with port offset 1:
% backup savedb -portoffset 1
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_restoredb(8), butc(8)
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