It can also mask drive problems. When I first set up a
Sun L11000 (P3000) here I turned on autocleaning. About
a week later I found a cleaning tape in the CAP. One of
the drives had requested cleaning 20 times in that week
and I didn't know it because it was all handled inside
the library. After that I turned on Tape Alert, but it
only works about 1/3 of the time. I have to manually
request the cleanings the rest of the time.
Ray
"W. Curtis Preston" wrote:
>
> Actually, I'll answer for Craig. He _did_ implement that feature, and got
> frustrated at THOSE results. The problem with automated tape cleaning by
> the STK library is that NBU doesn't know the drive is being cleaned, and it
> tries to put a tape in the drive. You get weird errors and down'd
> drives. With 100+ tape drives in his environment, he gave up on that.
>
> So I suggested changing it to the TapeAlert feature (since they're not
> using SSO yet). Lo and behold this doesn't seem to work very well
> either. The only real answer left is frequency-based cleaning, which I'm
> not a big fan of, since that's not how DLTs should be cleaned. However,
> frequency-based cleaning isn't supported in 3.4 SSO. (And they're looking
> at it.)
>
> There's no good answer to this question, AFAIC.
>
> At 11:54 PM 2/12/01 +0100, f@b wrote:
> > Hi ,
> >
> >I suggest you to implement the "autoclean" feature on the StK's library.
> >
> >This is the better way to ensure you that a drive cleaning is done.
> >
> >Hth , bye.
> >
> >Fabrice
> >
> >-----Message d'origine-----
> >De : veritas-bu-admin AT Eng.Auburn DOT EDU
> >[mailto:veritas-bu-admin AT Eng.Auburn DOT EDU]De la part de Andrew Shinkarev
> >Envoye : lundi 12 fevrier 2001 22:13
> >A : Everett, Craig
> >Cc : Veritas-bu AT mailman.eng.auburn DOT edu
> >Objet : Re: [Veritas-bu] Tape Alert automated cleaning not working
> >
> >
> >On Mon, Feb 12, 2001 at 12:44:07PM -0800, Everett, Craig wrote:
> >
> >Make them check Front Panel.
> >It says if a tape drive needs cleaning.
> >
> >If you are using SSO, time based cleaning
> >doesn't work quite well, and still
> >you will need to check libraries sometimes.
> >
> >Simple script, ssh to robot host and
> >tpclean command should help your operators to
> >handle this on daily basis.
> >
> >Thanks,
> >Andrew
> > > Andrew,
> > >
> > > That's strange because Netbackup Support doesn't seem aware of severity of
> > > cleaning request and possible ignores.
> > >
> > > I would have our operators do manual cleaning if I could but I've got 100+
> > > drives which would become cumbersome at best. I guess if I can't get this
> > > to work I'll switch to frequency based cleaning.
> > >
> > > Thanks for your help,
> > >
> > > Craig Everett
> > > Technology Operations-Storage Team
> > > Intuit Inc
> > > craig_everett AT intuit DOT com
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Andrew Shinkarev [mailto:shinkara AT pprd.abbott DOT com]
> > > Sent: Monday, February 12, 2001 12:31 PM
> > > To: Everett, Craig
> > > Cc: Veritas-bu AT mailman.eng.auburn DOT edu
> > > Subject: Re: [Veritas-bu] Tape Alert automated cleaning not working
> > >
> > >
> > > On Mon, Feb 12, 2001 at 11:09:03AM -0800, Everett, Craig wrote:
> > >
> > > You are not alone....
> > >
> > > DLT7000 Tape System Product Manual p.5-56 contains a list of
> > > TapeAlert Flags, Severity Levels, and Meanings for LOG SENSE
> > > command. There are 9 flags, and 6 of them correspond to
> > > cleaning requests. 3 of them have Severity Level Critical
> > > and 3 just Warnings. I think NetBackup ignores Warnings
> > > and taking care of Critical errors, becous I've seen NetBackup
> > > cleaning a tape drive.
> > >
> > > You can ignore them too ....
> > > I am checking my library every day and clean a tape drive
> > > if I see a cleaning request on a front panel.
> > >
> > > Thanks,
> > > Andrew
> > >
> > >
> > > > Background:
> > > > Sun E-450/Solaris 2.6
> > > > Netbackup 3.2
> > > > Storagetek L700 and 9740 Libraries
> > > > DLT 7000 Drives w/ 245F and 2565 microcode levels
> > > > Problem: Drives are not self cleaning using tape alert
> > > >
> > > >
> > > > Issue:
> > > > I recently implemented the tape alert method of cleaning on all of my
> > > master
> > > > servers. I set up barcode rules and inserted cleaning tapes as required.
> > > The
> > > > master server is aware of the cleaning tape:
> > > >
> > > > Masterserver# vmquery -b -mt dlt_clean
> > > > media media robot robot robot side/ optical # mounts/last
> > > > ID type type # slot face partner cleanings
> > > > mount time
> > > > ---------------------------------------------------------------------
> > > > CLN002 DLT_CLN NONE - - - - 0
> >00/00/00
> > > > 00:00
> > > > CLN003 DLT_CLN NONE - - - - 0
> >00/00/00
> > > > 00:00
> > > > CLN001 DLT_CLN NONE - - - - 0
> >00/00/00
> > > > 00:00
> > > > CLN008 DLT_CLN NONE - - - - 0
> >00/00/00
> > > > 00:00
> > > > CLN016 DLT_CLN NONE - - - - 0
> >00/00/00
> > > > 00:00
> > > > CLN000 DLT_CLN TLD 0 248 - - 20
> >00/00/00
> > > > 00:00
> > > >
> > > > So I know I have the cleaning tape available and mouts are at 20 ( it's
> >a
> > > > new tape ). Manual Cleaning works. Drive cleaning frequency is set to 0.
> >I
> > > > keep finding tape drives with their cleaning light on ( cleaning
> >required
> > > )
> > > > , but I don't see any cleaning occurring indicated by decremented
> >cleaning
> > > > tape mounts. I've set VERBOSE in my vm.conf so I can see the request for
> > > > cleaning entered in the /var/adm/messages log but nothing ever comes
> > > > through? Has anyone ever seen this? Is there a command to simulate a
> >drive
> > > > requesting a cleaning besides doing a manual cleaning? What netbackup
> >log
> > > > would be a good place to find some hidden problem that are perhaps
> > > > preventing the cleaning? Any input would be greatly appreciated.
> > > >
> > > > Thanks,
> > > > Craig Everett
> > > > Technology Operations-Storage Team
> > > > Intuit Inc
> > > > craig_everett AT intuit DOT com
> > > >
> > > >
> > > > _______________________________________________
> > > > Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> > > > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> > >
> > > --
> > > ----
> > > Andrew Shinkarev
> > > Network Systems Specialist
> > > Abbott Laboratories
> > > (847) 9387559
> > > shinkara AT pprd.abbott DOT com
> >
> >--
> >----
> >Andrew Shinkarev
> >Network Systems Specialist
> >Abbott Laboratories
> >(847) 9387559
> >shinkara AT pprd.abbott DOT com
> >_______________________________________________
> >Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> >http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> >
> >_______________________________________________
> >Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> >http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
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