RE: [SYS21] FW: Media errors on Magstar tape backup

The reason you do it because Murphy works there!

I always made my EOD procedures bullet proof.  4 DRP situations in 4 years
was enough!  Mirroring was out saviour.

We had a file with the library and frequency schedule.  A CL program would
read it... save it and update it...

MONMSG xxxx for everything!  There is a CPF command reference that has all
the possible messages.  I used that as a bible.
(we also had an idiot operator who couldn't be relied on which just
aggravated the situation).

Regards

Michael Berman

(m) 0419 324 558

-----Original Message-----
From: jbausers-l-bounces@xxxxxxxxxxxx
[mailto:jbausers-l-bounces@xxxxxxxxxxxx]On Behalf Of Heffner, Art
Sent: Saturday, 22 February 2003 12:24 AM
To: GEAC/JBA System 21 Users
Subject: RE: [SYS21] FW: Media errors on Magstar tape backup

Thanks Pete and Jeff.  I was thinking of doing a dspobjd to an outfile for
all libraries in qsys, deleting the ones I don't want to backup, and reading
this file to do the backup.  My problem now is: since this only happens a
couple of times a year do I want to bother?

Art

-----Original Message-----
From: Jeff_Klipa/Harvard@xxxxxxxxxxxxxx
[mailto:Jeff_Klipa/Harvard@xxxxxxxxxxxxxx]
Sent: Thursday, February 20, 2003 4:17 PM
To: CN=GEAC/O=JBA System 21 Users
Subject: Re: [SYS21] FW: Media errors on Magstar tape backup


You know, Pete's idea has merit but I doubt it would work with a
SAVLIB(*ALLUSR)
command...
By the time you're monitoring for the CPF msg the Save job has already
terminated...

So what you'd have to do is write a CL that simulates a SAVLIB(*ALLUSR)...
In other words you set up a file of library names you want to save...
The CL would loop through the file and do a SAVLIB(&libnam) for each name in
the
file...  (*LEAVE) on the rewind tape option...
Use tne MONMSG right after the SAVLIB and if you do get a media error do the
CHKTAP (*UNLOAD)...
The trick then becomes loading the next tape...(This might be a show
stopper...)
Then you could start the save of the library that it failed on all over
again on
the new tape...

It will prove tough to test unless you can force the media error msg via a
DEBUG
or something...

Good luck with that...







"Pete Sorensen" <PSorensen@xxxxxxxxxxxxxxxx> on 02/20/2003 02:59:10 PM

Please respond to "GEAC/JBA System 21 Users" <jbausers-l@xxxxxxxxxxxx>



  To:          jbausers-l@xxxxxxxxxxxx

  cc:          (bcc: Jeff Klipa/Harvard)



  Subject      Re: [SYS21]   FW: Media errors on Magstar tape
  :            backup







If the MONMSG command gets tripped, use this command CHKTAP DEV(device
name) ENDOPT(*UNLOAD).    This should unolad the tape and grab the next
one.

>>> aheffner@xxxxxxxxxxxxx 02/20/03 12:59PM >>>


We do an unattended backup nightly using SAVLIB(*ALLUSR) to a 3570
Magstar
tape drive.  Every once in a while we get error message CPF5349 Media
error
on volume tapnn on device TAP02.  Since we MONMSG CPF0000 this ends
our
backup.

I would like to be able to monitor for CPF5349, unload the bad tape
and
continue on with the backup using the next tape in the library.  Anyone
have
a great idea how to accomplish this?
(V4R4)

Thanks in advance,

Art Heffner
Production Tool Supply
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