Veritas-bu

[Veritas-bu] Tape unmount delay

2003-06-03 10:46:09
Subject: [Veritas-bu] Tape unmount delay
From: paulg AT CDCNA DOT COM (Paul Gimpelev)
Date: Tue, 3 Jun 2003 10:46:09 -0400
I have checked everything, believe me.  This error is completely random,
spanning 2xATL 7100 libraries and multiple drives and media.  Veritas is
currently playing "not my problem game" and ATL is swapping parts :-(.

paulg

On Jun 3,  9:37am, Penelope Carr wrote:
> Subject: RE: [Veritas-bu] Tape unmount delay
> This is for database backups only.
>
> The messages you are getting could be caused by your paths not being
> correct.  I would run robtest and move tapes in and out of the drives in
> question.  If the drives are ok, check the media.
>
> Penelope
>
>
>
> -----Original Message-----
> From: paulg AT CDCNA DOT COM [mailto:paulg AT CDCNA DOT COM]
> Sent: Tuesday, June 03, 2003 7:29 AM
> To: Steven L. Sesar; Paul Gimpelev
> Cc: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] Tape unmount delay
>
>
> Steve,
>
>       Thanks for the response.  According to NBU 4.5 documentation
> MEDIA_UNMOUNT_DELAY applies only to user operations.  Are you saying NBU
> docs
> might be inaccurate :-0 ?  Did you see these error messages by any chance(if
> you have Solaris, of course):
>
>
> Jun  2 00:11:31 nbackps1 tldcd[28671]: [ID 183166 daemon.error] TLD(0) key =
> 0x5, asc = 0x3a, ascq = 0x0, MEDIUM NOT PRESENT
> Jun  2 00:11:31 nbackps1 tldcd[28671]: [ID 841094 daemon.error] TLD(0)
> Move_medium error: CHECK CONDITION
> Jun  2 00:11:31 nbackps1 tldd[12811]: [ID 219836 daemon.error] TLD(0) drive
> 7
> (device 6) is being DOWNED, status: Robotic dismount failure
> Jun  2 00:11:31 nbackps1 tldd[12811]: [ID 229259 daemon.error] Check
> integrity
> of the drive, drive path, and media
>
> Thanks,
>
> paulg
>
> On Jun 2,  9:10pm, Steven L. Sesar wrote:
> > Subject: Re: [Veritas-bu] Tape unmount delay
> > MEDIA_UNMOUNT_DELAY is exactly what you want to tune. I ran into the very
> same thing. What was happening in my environment was that NBU was issuing a
> SCSI drive unmount command, before the tape was finished unwinding. Setting
> MEDIA_UNMOUNT_DELAY=1800 did the trick. My drives no longer are being downed
> as
> a result of this condition.
> >
> > --Steve
> >
> > On Mon, 2 Jun 2003, Paul Gimpelev wrote:
> >
> > > Date: Mon, 2 Jun 2003 17:39:50 -0400
> > > From: Paul Gimpelev <paulg AT CDCNA DOT COM>
> > > To: veritas-bu AT mailman.eng.auburn DOT edu
> > > Subject: [Veritas-bu] Tape unmount delay
> > >
> > >   Does anyone know if NBU 4.5 has a tunable "tape unmount delay"?  I
> > > don't mean the MEDIA_UNMOUNT_DELAY that they use to determine how long
> the
> tape
> > > stays in the drive post backup/restore.  I am running into an issue
> where
> it is
> > > possible that NBU does not wait long enough for a DLT IV drive to rewind
> and
> > > initiates an attempt for a robotic tape move prematurely.  This in turn
> causes
> > > the drive to go down.
> > >
> > > I would appreciate any information from someone who had a similar
> occurence.
> > >
> > > Thanks,
> > >
> > > paulg
> > > _______________________________________________
> > > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> > > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> > >
> >
> > --
> > ========================================
> >
> > Steven L. Sesar
> > Senior Operating Systems Programmer/Analyst
> > UNIX Applications Services R10A
> > The MITRE Corporation
> > 202 Burlington Road - MS K101
> > Bedford, MA 01730
> > tel: (781) 271-7702
> > fax: (781) 271-2600
> > mobile: (617) 893-9635
> > email: ssesar AT mitre DOT org
> >
> > ========================================
> >
> >
> >-- End of excerpt from Steven L. Sesar
>
>
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>-- End of excerpt from Penelope Carr



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