[Veritas-bu] Error 84 on HP LTO drives

Gerrit,

I just finished a battle with the 84 media errors.  

Our environment:
- NB 3.4 Jumbo 3
- Solaris 7
- Exabyte 430M Mammoth2 library

The final fix, for us, was to touch the
/usr/openv/netbackup/db/config/NO_POSITION_CHECK file.
This tip was given to me by Veritas Technical Support after he had analyzed
our st.conf file and 
made sure that it was set to variable length. 

It may be worth a shot.  


Eric Wiland
Systems Administrator
NTE, Inc.


-----Original Message-----
From: Gerrit Bos [mailto:gbos AT uoguelph DOT ca]
Sent: Wednesday, September 18, 2002 12:32 PM
To: NetBackup List
Subject: [Veritas-bu] Error 84 on HP LTO drives


I am getting error 84's on HP LTO drives in an HP L700 library.  The
tapes succesfully mount, and start writing a backup image, but after
about 1.8 GB stops with an error 84:

09/18/2002 11:04:23 wayback chico.cs  FREEZING media id 700002, too many
data
                    blocks written, check tape/driver block size
configuration

We are using Netbackup 3.4 patched to NB_34_3 on Solaris 8.

The Veritas knowledge base references this exact error, with the advice
to:
Configure the /kernel/drv/st.conf file so that drives are being written
in variable length mode.
See: http://seer.support.veritas.com/docs/248548.htm

Based on Solaris documentation, our entry in st.conf reads:

"HP      Ultrium", "HP Ultrium", "ULTRIUM",
ULTRIUM = 1,0x36,0,0xd639,4,0x00,0x00,0x00,0x40,3;

The drives in question are HP LTO/Utrium 1 SCSI Model A6323A HVDS

Where the 3 field as '0' is supposed to be variable length.  Doesn any
one either know what the problem is, or have a working st.conf entry for
HP Ultrium drives?

Thanks very much in advance....Gerrit

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