Actually, no I don't have a script for this. It's not that big an issue
that I worry about some sort-of-occupied tapes.
I don't usually worry about the "phantom data" issue (I like the term
"phantom data" by the way, Rusty.)
-M
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of David Chapa
Sent: Monday, June 21, 2004 9:40 AM
To: Major, Rusty; Johnson, Lee - CIDS-2;
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Expiring a single job on a single tape
So Mark is correct...if there are failed jobs during a backup session
that space on tape is not reclaimed until the last image on the tape
expires and the entire tape is available for reuse.
I believe the main reason for this (and this is stretching way back to
my OpenVision days) was to not impact the overall backup window with
rewind/repositioning, but to complete the entire backup session as
quickly as possible. You do sacrifice some space on tape, but the end
result hopefully is that all backups complete within the given window.
As far as keeping track of the "failed" jobs...well I'm sure Mark has
some scripts for that as well as others. I wrote one a while back, but
I can't remember if it provides the info you need for tracking. I would
leverage bperror to identify the failed jobs...
David
David A. Chapa * ADIC * 720.249.5836 * 720.272.8452 cell *
david.chapa AT adic DOT com
HIGH PERFORMANCE, SCALABLE, RELIABLE - http://www.adic.com/gopathlightvx
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Major,
Rusty
Sent: Monday, June 21, 2004 7:43 AM
To: Johnson, Lee - CIDS-2; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Expiring a single job on a single tape
How do you check for these jobs? Do you have a script, or just manually
keep track of all failed jobs and go from there?
As a side note, I've seen NBU use the same tape again after it has
failed. I think the key difference is that the tape did not fill up, so
it had space to write to even with the 'phantom' data from the failed
job.
Thanks,
Rusty
> -----Original Message-----
> From: Johnson, Lee - CIDS-2 [mailto:vljohnson AT bpa DOT gov]
> Sent: Wednesday, June 16, 2004 10:29 AM
> To: Mark.Donaldson AT cexp DOT com; nantel AT ecopiabio DOT com;
> veritas-bu AT mailman.eng.auburn DOT edu
> Subject: RE: [Veritas-bu] Expiring a single job on a single tape
>
>
> We have found the same thing. We have noticed also that the
> media databases, if separate from the master server, will
> retain data from failed jobs on tapes. We routinely check for
> this and deassign and expire tapes each week.
> lee
>
> -----Original Message-----
> From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of
> Mark.Donaldson AT cexp DOT com
> Sent: Wednesday, June 16, 2004 8:23 AM
> To: nantel AT ecopiabio DOT com; veritas-bu AT mailman.eng.auburn DOT edu
> Subject: RE: [Veritas-bu] Expiring a single job on a single tape
>
>
> I have no confirmation of this but I've always had the
> sneaking suspicion
> that the fragments of a failed job still occupy the tape, but
> are unusable,
> until that tape expires.
>
> One option you have is to use bpduplicate to copy the good
> image to a clean
> tape and then expire the original tape.
>
> -M
>
> -----Original Message-----
> From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Mathieu
> Nantel
> Sent: Wednesday, June 16, 2004 9:17 AM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] Expiring a single job on a single tape
>
>
> Ok. It looks like I can't expire the job because it's just not there.
> However,
> there's this report generated by the available_media script that still
> claims
> that the tape is full (if that job wasn't there anymore it wouldn't be
> full).
>
> Excerpt:
>
> [root@life admincmd]# available_media
> media media robot robot robot side/ ret size status
> ID type type # slot face level KBytes
> --------------------------------------------------------------
> --------------
>
> ...
>
> CHEM02 DLT NONE - - - 24 98482912
> ACTIVE
> CHEM01 DLT TLD 0 4 - 24
> 142478432 FULL
>
>
> The CHEM01 tape is the one with the bad image on. Is the
> available_media
> script broken???
>
> Thanks to all who replied. Truly an helpful mailing list.
>
> On Wednesday 16 June 2004 11:04 am, Mark.Donaldson AT cexp DOT com wrote:
> > "bpimmedia -mediaid <tapenum>" will show you all images on
> a specific tape
> > - you can check if NB is tracking this image. "bpexpdate
> -backupid <bkid>
> > -d 0 -force" will force expire that image if you need.
> >
> > -M
> >
> > -----Original Message-----
> > From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> > [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Mathieu
> > Nantel
> > Sent: Wednesday, June 16, 2004 8:38 AM
> > To: veritas-bu AT mailman.eng.auburn DOT edu
> > Subject: [Veritas-bu] Expiring a single job on a single tape
> >
> >
> > Good day NBU admins,
> >
> > I started this backup job which didn't fit on the tape I
> was trying to
> have
> > it
> > fit on (resulting in the job failing because it couldn't
> load another
> > tape),
> >
> > and I would like to remove/expire the job in order to
> recover the lost
> > space
> >
> > on that tape. Thing is, I can't expire the tape because
> there is another
> > job
> >
> > on this tape that I cannot have expiring (it's an archive
> job which is
> > marked
> > "infinite" expiration date).
> >
> > Is there a way in NBU Datacenter 4.5 to expire a single job
> on a tape
> > without
> > expiring the whole tape?
> >
> > Thanks in advance!
> > Mat
>
> --
> ===================================================================
> Mathieu Nantel - RHCE,BOFH Ecopia BioSciences
> Systems Manager (514) 336-2724 x434
> nantel AT ecopiabio DOT com
> ===================================================================
> [*] Please avoid sending me Word/Excel/PowerPoint attachments: this
> assumes that I run MS Office, which is not always the case.
> See: http://www.fsf.org/philosophy/no-word-attachments.html
> ===================================================================
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