Re: Replaced tape drive now device type 'unknown'

Steven,

I had the same kind of problem on a TSM 5.3.1 server recently (other
hardware, but same behaviour), and had to restart the application in
order to get the drive recognized ...
If you can afford some minutes downtime, worth to give it a try ;-)
Cheers.

Arnaud 

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-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Steven Bridge
Sent: Monday, 25 July, 2005 16:40
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Replaced tape drive now device type 'unknown'

We have 3 AIT-2 drives within a Qualstar 412600 library.
After having a drive replaced, 'q dri' is now showing it as device type
'UNKNOWN' rather than '8MM' - and the define path command is failing
with :

<< Message number 8972 not available for language
/USR/LIB/NLS/MSG/EN_US/ >>

Usually when a drive is replaced, I delete the path and drive and
recreate these ( since TSM 5.2 ? ) as the serial number of the drive no
longer matches. Up to now this has always worked.

The drive was detected OK by AIX and I have been able to use tar
directly from AIX to write and read from a tape manually inserted. I
have removed and recreated the TSM device 'mt1' but still the problem
re-occurs.

Is this due to the tape drive failing to respond correctly to some SCSI
enquiry commnd that TSM is submitting ? lscfg returns same output from a
'good' and a 'bad' drive :

lscfg -vl rmt0
  rmt0             U0.1-P1-I1/Z1-A1  Other SCSI Tape Drive

        Manufacturer................SONY
        Machine Type and Model......SDX-500C
        Serial Number...............
        Device Specific.(Z3)........0000

'q dri f=d' shows a serial number for the 'good' drives.

Is there any way of persuading TSM to use this drive ? Or is there
something wrong with this drive ?

Using TSM 5.2.3 on AIX 5.2 .

+----------------------------------------------------------------------+
 Steven Bridge     Systems Group, Information Systems, EISD
                          University College London