Veritas-bu

[Veritas-bu] RE: Veritas-bu digest, Vol 1 #1990 - 3 msgs

2003-03-04 10:13:16
Subject: [Veritas-bu] RE: Veritas-bu digest, Vol 1 #1990 - 3 msgs
From: thoke AT northpeak DOT com (Tim Hoke)
Date: Tue, 4 Mar 2003 09:13:16 -0600 (CST)
And one more oversight on my part...

I am so Unix centric, i missed the "windows 2000"...

If you look at veritas' compatibility matrix, the 9840 drives don't have a
tapealert footnote for windows.

so.... it looks like library based cleanining it is.

-Tim

On Tue, 4 Mar 2003, Tim Hoke wrote:

> 
> TapeAlert is enabled based on the drive firmware.
> 
> I stand corrected on my tpautoconf -t command.... I think it has to be 4.5
> in order to show the TapeAlert enabled.  Here's an example output from 4.5
> with a drive that supports TapeAlert:
> 
> TPAC45 QUANTUM DLT8000         0250 PMC40P1629 -1 -1 -1 -1 /dev/rmt/0cbn -
> TapeAlert enabled
> 
> I guess you will have to confirm with STK if the 9480 version 1.30
> firmware supports TapeAlert.
> 
> Then it's just a matter of configuring a cleaning tape in the
> library.  Then when the drive needs cleaning, NBU can just grab the tape
> and clean the drive.
> 
> -Tim
> 
> On Mon, 3 Mar 2003, vidit kohli wrote:
> 
> > Tim
> > 
> > How to setup tape-alert in 3.41_3 on windows 2000
> > 
> > before that how to check ith tpautoconf -t command, i mean what all 
> > following lines means
> > 
> > E:\VERITAS\Volmgr\bin>tpautoconf -t
> > STK     9840            1.30 331000039964 3 0 0 0 Tape0
> > STK     9840            1.30 331000040407 3 0 1 0 Tape1
> > STK     9840            1.30 - 3 0 2 0 Tape2
> > STK     9840            1.30 331000040134 4 0 3 0 Tape3
> > STK     9840            1.30 331000051916 4 0 4 0 Tape4
> > STK     9840            1.30 331000051080 4 0 5 0 Tape5
> > STK     9840            1.30 331002052015 5 0 6 0 Tape6
> > STK     9840            1.30 331002036295 5 0 7 0 Tape7
> > 
> > 
> > 
> > vk
> > 
> > 
> > 
> > 
> > 
> > 
> > From: "Paul Bleimeyer" <paulb AT mayo DOT edu>
> > Reply-To: "Bleimeyer, Paul W." <paulb AT mayo DOT edu>
> > To: "'Tim Hoke'" <thoke AT northpeak DOT com>
> > CC: <veritas-bu AT mailman.eng.auburn DOT edu>, "'vidit kohli'" 
> > <vidit_k AT hotmail DOT com>
> > Subject: RE: [Veritas-bu] RE: Veritas-bu digest, Vol 1 #1990 - 3 msgs
> > Date: Mon, 3 Mar 2003 16:49:58 -0600
> > 
> > Tim,
> > 
> > Thanks for the update on the tape alert. This was and has not been our
> > experience
> > with NBU under 341. At the same time we just moved to 4a a couple months
> > ago. I will
> > stay with my previous statement concerning frequency based tape cleaning
> > while
> > running SSO. It just walks over the top of the value. At least at 341_4A
> > with
> > 9840A drives, and an L700 at 3.01.02 of the firmware. If someone has a
> > different experience
> > with frequency based cleaning and SSO under 4.5 I would be VERY interested
> > in hearing about
> > it. My plan at this time is to let the library keep doing the cleaning and
> > keep it simple.
> > I can always issue a tpclean command as needed, which has not been an issue
> > since
> > converting to library based cleaning.
> > 
> > Thanks,
> > 
> > Paul
> > 
> >  > -----Original Message-----
> >  > From: Tim Hoke [mailto:thoke AT northpeak DOT com]
> >  > Sent: Monday, March 03, 2003 4:19 PM
> >  > To: Paul Bleimeyer
> >  > Cc: veritas-bu AT mailman.eng.auburn DOT edu; 'vidit kohli'
> >  > Subject: Re: [Veritas-bu] RE: Veritas-bu digest, Vol 1 #1990 - 3 msgs
> >  >
> >  >
> >  > Hmmm...
> >  >
> >  > Well, NBU does work in SSO with TapeAlert, as long as the
> >  > drives support
> >  > it.
> >  >
> >  > tpautoconf -t will show if they do or not.
> >  >
> >  > Frequency based cleaning doesn't (as noted) work in SSO.
> >  >
> >  > IF however, you are going to use Library based (Since
> >  > tapealert might not
> >  > work), then make sure to disable tape alert within NetBackup....
> >  >
> >  > On each media server:
> >  >
> >  > touch /usr/openv/volmgr/database/NO_TAPEALERT
> >  >
> >  > Then restart the daemons.
> >  >
> >  > And make sure you are at 3.4_4 or 4.5_1
> >  >
> >  > -Tim
> >  > thoke AT northpeak DOT com
> >  >
> >  > On Mon, 3 Mar 2003, Paul Bleimeyer wrote:
> >  >
> >  > > > From: "vidit kohli" <vidit_k AT hotmail DOT com>
> >  > > > Subject: [Veritas-bu] 9840 drive cleaning in L700
> >  > >
> >  > > > I have setup Netbackup 3.4 to control 9840 drive cleaning in
> >  > > > L700, but
> >  > > > problem is that it don't work as required.
> >  > > > [my understanding was that when ever any drive needs cleaning
> >  > > > , netbackup
> >  > > > will perform before next backup starts for that 9840 drive]
> >  > > >
> >  > > > I have two cleaning media in the slots detected by media manager,
> >  > > > also tpclean -c option does manual clean fine
> >  > > >
> >  > > > Please advise if I'm missing any settings?
> >  > > >
> >  > >
> >  > >
> >  > > Vidit,
> >  > >
> >  > > I am going to reply here since I faced the same thing as
> >  > you about a year
> >  > > ago
> >  > > and this might help someone else out as well if they read
> >  > the archives later
> >  > > on.
> >  > >
> >  > > You mentioned in an email to me that you had SSO enabled on
> >  > your media and
> >  > > master
> >  > > servers. The reason I asked this is because we did the same
> >  > thing. Same
> >  > > problems too!
> >  > >
> >  > > In an SSO environment with an L700 you want the library to
> >  > clean the tape
> >  > > drives and not have veritas handle it. The reason is that
> >  > frequency base
> >  > > tape cleaning and tape alert fails under environments using SSO with
> >  > > veritas. The library should be made responsible for
> >  > cleaning the drives.
> >  > > This is not totally clear in the Veritas documentation when
> >  > referencing SSO
> >  > > environments. At least the last time I looked it was a
> >  > little sparse.
> >  > >
> >  > > So what the heck is going on then? Why does it fail under
> >  > SSO and not
> >  > > others?
> >  > > Here is why. It has to do with the tape cleaning and usage
> >  > counter getting
> >  > > reset.
> >  > > When you first media server mounts the tape and starts
> >  > using the drive, then
> >  > > the counter on usage in the drive starts running. For
> >  > example, you run about
> >  > > 10 tapes through this same drive via the
> >  > > same media server all weekend long during a full. The last
> >  > tape unmounts and
> >  > > the veritas
> >  > > media server notifies your master that it is done with the
> >  > drive and the
> >  > > drive is released.
> >  > > At this point your tape drive has a usage counter for the
> >  > amount of time
> >  > > this drive
> >  > > has been in use. Now veritas is currently setup to detect
> >  > this and will
> >  > > attempt to clean
> >  > > the drives. Everything looks great right?
> >  > >
> >  > > Here is where SSO gets in the mix. Now along comes media
> >  > server number 2.
> >  > >
> >  > > It has a number of policies/classes it is supposed to run as
> >  > > well and starts allocating drives. Including the one your
> >  > first media server
> >  > > just got done
> >  > > using. As soon as it connects to the tape drive that media
> >  > server 1 was just
> >  > > using, it
> >  > > resets the tape usage/cleaning counter on the drive and the
> >  > veritas job for
> >  > > cleaning
> >  > > never fires. Not good.
> >  > >
> >  > > So how do we fix this behavior? With SSO in the mix you
> >  > want to make sure
> >  > > that the library itself handles this process for you. Now
> >  > this gets a little
> >  > > bit interesting as well, since some of the prior releases
> >  > of firmware on the
> >  > > L700 didn't always handle this properly as well.
> >  > >
> >  > > Here is a link from support about the version issues:
> >  > > http://seer.support.veritas.com/docs/240940.htm
> >  > >
> >  > > So once you get the veritas jobs disabled, now you want to
> >  > go to the front
> >  > > panel of your l700 or
> >  > > you can do this remotely if you have the horizon code
> >  > installed for remote
> >  > > support as well.
> >  > > You want to select the menu button and then find the main
> >  > library portion
> >  > > and enable library
> >  > > cleaning. This way when the "clean drive" light comes on,
> >  > your library will
> >  > > pull a cleaning tape
> >  > > and insert it into the drive for cleaning at the next
> >  > available interval.
> >  > > You also want to keep
> >  > > at least a couple tapes in your normal silo space for
> >  > running a manual
> >  > > cleaning at times.
> >  > > Every once in a while you may get a tape that ends up being
> >  > frozen and
> >  > > veritas decides to freeze
> >  > > it since it looks like a bad tape. Go ahead and manually
> >  > clean the drive and
> >  > > reload the tape again
> >  > > with it unfrozen. In some cases, this is just a drive that
> >  > is very close to
> >  > > needing a cleaning
> >  > > and has not tripped the clean drive light. Just a suggestion.
> >  > >
> >  > > I can tell you that we are running with horizon load level
> >  > 3.01.02 and
> >  > > 130.112E on our drives
> >  > > and its working like a champ. I would also recommend you
> >  > consider upgrading
> >  > > to the 341_4A patch
> >  > > if you can, since it also has some corrections in it for
> >  > releasing the
> >  > > drives properly. Just
> >  > > a suggestion. As always, check your fabric rev levels, tape
> >  > drivers, drive
> >  > > firmware, library firmware,
> >  > > and switch rev levels into account before changing anything
> >  > in your SAN.
> >  > >
> >  > > Here is the readme on 4a.
> >  > > http://seer.support.veritas.com/docs/240940.htm
> >  > >
> >  > >
> >  > > Hope this helps you out.
> >  > >
> >  > > Regards,
> >  > >
> >  > > Paul Bleimeyer
> >  > > Research Computing Facility
> >  > > Mayo Foundation, Rochester MN
> >  > >
> >  > > _______________________________________________
> >  > > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> >  > > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> >  > >
> >  >
> >  >
> > 
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