Technical data

Using BACKUP
11.9 Understanding OPCOM and Volumes
Examples
1. To request the operator to mount a tape, enter a command similar to the
following one:
$ REQUEST/REPLY "Is anyone using drive MUA12?"
%OPCOM-S-OPRNOTIF, operator notified, waiting...12:21:12.46
%OPCOM-S-OPREPLY, PLEASE DIRECT YOUR REQUEST TO THE TAPE OPERATOR
2-APR-2000 12:26:13.12. request 2 completed by operator OPA0
$
The /REPLY qualifier assigns your request a unique number (in this case, 2)
to which the operator can respond. Note that you cannot enter any additional
commands until the operator responds.
2. The following example shows you how to direct your request to a specific
operator using the /TO qualifier:
$ REQUEST/TO=TAPES "Is anyone using drive MUA12?"
%OPCOM-S-OPRNOTIF, operator notified, waiting...12:40:11.32
%OPCOM-S-OPREPLY, I’M DONE GO AHEAD
2-APR-2000 12:45:26.18. request 5 completed by operator OPA0
$
11.10 Listing the Contents of a BACKUP Save Set
BACKUP allows you to obtain information about save sets and the files in a save
set. You can display this information at your terminal or send it to an output file.
Because BACKUP writes save sets in a format that only BACKUP can interpret,
a list operation is the only way to determine the contents of a save set without
restoring the save set. You can perform a list operation in conjunction with any
other BACKUP operation.
By default, a save-set listing supplies information about files in the
save set similar to the information supplied by the DCL command
DIRECTORY/DATE/SIZE, including the actual number of blocks used for
each file.
You can also perform a BACKUP list operation to list the contents of a BACKUP
journal file. BACKUP journal files, which are created during a save operation by
using the command qualifier /JOURNAL[=file-spec], contain on-disk records of
BACKUP save operations and the file specifications of the files saved during each
operation. Section 11.13.4 contains more information about creating and listing
BACKUP journal files.
How to Perform This Task
To list the contents of a BACKUP save set, perform the following actions:
1. Insert the media containing the save set into the drive.
2. If the volume is a disk, mount the disk as described in Section 11.8.2
(BACKUP mounts tapes automatically).
3. Enter the BACKUP/LIST command in the format specified in the OpenVMS
System Management Utilities Reference Manual. The /REWIND qualifier
rewinds the tape to the beginning before searching for the save set. To list all
the save sets on a volume, include the asterisk wildcard character (*) with
the device specification.
Using BACKUP 11–19