MPE/iX System Utilities Reference Manual (32650-90908)

Chapter 6
DISCUTIL
Operation
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This command would re-execute the fifth command entered after allowing you to modify it.
To re-execute the last command entered enter:
discutil>REDO
SAVE
Use SAVE to retrieve files from disk and copy them to magnetic tape. You might use SAVE after a system
failure, when a directory has been corrupted, or when a disk becomes inaccessible to the operating system.
If the volume label or the label table extent blocks are corrupt, SAVE will stop retrieving files from that disk
and move onto the next.
Saving one set of files
You can tell DISCUTIL which files you want to copy to tape. The file(s) must reside on a disk that was mounted
manually or during the startup of DISCUTIL.
To specify which files you want to save with DISCUTIL, do the following:
1. At the discutil> prompt, enter the SAVE command.
2. At the ENTER FILE SET TO BE SAVED prompt, specify the files you want copied using either MPE or HFS
syntax. You can replace any part of the file set specification with @ to indicate all members of the set.
3. At the prompt TRAVERSE DIRECTORIES UNDER FILESET (Y/N), press
RETURN to not save any
hierarchical directories.
4. At the prompt ENTER THE LDEV, press return to tell the system to search all logical disk devices for the
files. To search a single disk, enter its LDEV number.
5. At the prompt ENTER THE VOLUME SET NAME, press RETURN to search all disks. To search one set, specify
the set.
6. At the prompt ENTER THE MODIFICATION DATE (MM/DD/YYYY), enter a date to save only those files in the
file set that have been modified on or since a certain date.
7. At the prompt ENTER THE TAPE LDEV, enter the LDEV number of the tape drive on which you want to
store the files.
DISCUTIL searches the label tables of all ldevs specified for the indicated file(s). Each time a file is found, and
when the file is successfully written to tape, it prints a message. You may also see other messages indicating
that an error has occured while DISCUTIL was saving a file.
If the end of a tape is reached before the procedure is complete, DISCUTIL will prompt you to mount a new
tape. Once you have done so, SAVE continues until all specified files are copied. At that point, the ENTER FILE
SET TO BE SAVED: prompt appears again so that you may specify additional files sets.
NOTE Do not manually rewind the tapes. DISCUTIL will do this automatically when it has properly
finished the process.
Saving multiple file sets
To save multiple sets of files, do the following:
1. Specify the first file set you want saved, answering each of the questions DISCUTIL asks. Refer to the
preceding set of steps for information.