Veritas-bu

[Veritas-bu] Tape Alert automated cleaning not working

2001-02-13 08:59:31
Subject: [Veritas-bu] Tape Alert automated cleaning not working
From: spe08 AT co.henrico.va DOT us spe08 AT co.henrico.va DOT us
Date: Tue, 13 Feb 2001 08:59:31 -0500
A quick question, what version of the L700 firmware are we talking about?

dds

-----Original Message-----
From: Andrew Shinkarev [mailto:shinkara AT pprd.abbott DOT com]
Sent: Tuesday, February 13, 2001 08:54
To: Michael Traves
Cc: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Tape Alert automated cleaning not working


On Tue, Feb 13, 2001 at 08:15:58AM -0500, Michael Traves wrote:

Michael, 


You might need to say - every mount will be dealyed for 10 
minutes. I were suggested to increase this value to 
3 minutes, and even 3 minutes is too much. 

Here is the description of the problem I received from Sun
( as soon as our L700's have Sun label on them )

The L700 manual states;

"When a drive requires cleaning, the library interleaves the cleaning
cartridge mount with normal host operations. The "Fast Load" option is
always enabled for cleaning cartridges, so the mount occurs within
seconds. Typically, the cleaning mount occurs directly after a data
cartridge dismount. Host applications see minimal processing
interruptions (less than ten seconds) during the cleaning mount.  While
the cleaning cartridge remains in the drive, the library processes host
commands normally. If a host requests a data mount to the drive being  
cleaned, then the library rejects the command and sends the Not Ready  
sense key (02), with ASC 30 and ASCQ 03 (Cleaning Cartridge
Installed).  The host receives the data mount error for the duration of
the cleaning time."

HOWEVER,

There appears to be a bug with the current L700 firmware release. What
we are seeing on customer sites is that the L700 is returning the
following response during a mount to a drive that is currently being
cleaned;

Medium Not Present, Drive Not Unloaded 5h 3Ah 00h

Instead of;

Not Ready, Cleaning Cartridge Installed. The library is performing an
Auto Clean function on the data transfer element (tape drive). 2h 30h 03h

Here is an example of the error you'd see;

Jul 24 12:46:41 un1x tldcd[10561]: TLD(3) key = 0x5, asc = 0x3a, ascq = 0x0,
MEDIUM NOT PRESENT
Jul 24 12:46:41 un1x tldcd[10561]: TLD(3) Move_medium error: CHECK CONDITION
Jul 24 12:46:41 un1x tldcd[10561]: TLD(3) could not move barcoded tape
CLN442
from drive 7 to
outport
Jul 24 12:46:41 un1x tldd[22667]: TLD(3) drive 7 (device 6) is being DOWNED,
status: Robotic
dismount failure
Jul 24 12:46:41 un1x tldd[22667]: Check integrity of the drive, drive path,
and
media

So, timing  has nothing to do with the porblem.


Thanks,
Andrey

> 
> That's not entirely correct -- if you set your mount timeouts
appropriately
> (say 10mins or greater) than NetBackup will wait that long prior to giving
> up and assuming something is wrong with the drive.  Setting this value
gives
> enough time for the robot to perform the cleaning, without NetBackup
timing
> out and downing the drive.
> 
> 
> ----- Original Message -----
> From: "Everett, Craig" <Craig_Everett AT intuit DOT com>
> To: <fabrice.brochart AT wanadoo DOT fr>; "Andrew Shinkarev"
> <shinkara AT pprd.abbott DOT com>; "Everett, Craig" <Craig_Everett AT intuit 
> DOT com>
> Cc: <Veritas-bu AT mailman.eng.auburn DOT edu>
> Sent: Monday, February 12, 2001 11:37 PM
> Subject: RE: [Veritas-bu] Tape Alert automated cleaning not working
> 
> 
> > If you use the "autoclean" feature it will cause Netbackup to down
drives
> > that are being cleaned by the library. That's why we are converting to
> > Netbackup automated cleaning. If you talk to Storagetek about an unusual
> > rate of drives being downed they will first ask you if you are using
> > Storagetek autocleaning and Netbackup software. If so you will get an
> > unusually high rate of drives being downed because Netbackup doesn't
know
> > when STK is cleaning the drives. Converting to Netbackup cleaning will
> help
> > you resolve this problem. Thanks,
> >
> > Craig
> >
> > -----Original Message-----
> > From: f@b [mailto:fabrice.brochart AT wanadoo DOT fr]
> > Sent: Monday, February 12, 2001 2:54 PM
> > To: Andrew Shinkarev; Everett, Craig
> > Cc: Veritas-bu AT mailman.eng.auburn DOT edu
> > Subject: RE: [Veritas-bu] Tape Alert automated cleaning not working
> >
> >
> > 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
> >
> > _______________________________________________
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> 
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-- 
----
Andrew Shinkarev
Network Systems Specialist
Abbott Laboratories
(847) 9387559
shinkara AT pprd.abbott DOT com
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