Hi,
I'd try
Define PATH adsm-pac lto1dr4 srctype=server desttype=drive device=/dev/rmt4
library=ltolib1
Mit freundlichen Grüßen / Best Regards

Markus Veit




                                                                       
                                                                       
                                                                       
                                                An: ADSM-L AT VM.MARIST DOT EDU
                                                Kopie:                 
                                                Thema:   Path to drive lost, no 
way getting it back ....
                                                                       
              owner-adsm-l AT VM.MARIST DOT EDU                               
              Received :  05.12.2003                                   
              10:30                                                    
              Bitte antworten an "ADSM:                                
              Dist Stor Manager"                                       
                                                                       




Hi list,
I got a strange problem 2 days ago, and still no explanation : the path
to an LTO drive located in a 3584 library was suddenly reported as
marked offline :
12/02/03 07:51:22 ANR8471E Server no longer polling drive LTO1DR4 in
library LTOLIB1 - path /dev/rmt4 will be marked off-line.
12/02/03 07:51:22 ANR8873E The path from source ADSM-PAC to destination
LTO1DR4 (/dev/rmt4) is taken offline.
I had no chance to have it back on line again, despite the fact the
drive was looking OK on AIX side. I then called IBM, that supposed
something was wrong with the drive and replaced it : still no success
Trying to delete and recreate the path gives :
12/03/03 08:47:55 ANR2017I Administrator BAR021 issued command: DEFINE
PATH adsm-pac lto1dr4 srctype=server desttype=drive device=rmt4
library=ltolib1
12/03/03 08:47:55 ANR8779E Unable to open drive rmt4, error number=2.
This drive is SCSI type, connected to a 2108 G07 san data gateway, which
detects  the drive (we actually have 2 scsi connectors on the box, each
one having two LTO drives):
 fcShowDevs
FC 1:
LUN Chan  Id  Lun  Vendor   Product          Rev   SN
-----------------------------------------------------
  0   0    0    0  PATHLGHT SAN Gateway      0016  21081303263
  2   1    0    0  IBM      ULT3580-TD1      3512
  3   1    0    1  IBM      03584L32         3060  000000010234
  4   1    1    0  IBM      ULT3580-TD1      3512
  6   2    2    0  IBM      ULT3580-TD1      3512
  8   2    3    0  IBM      ULT3580-TD1      3512
FC 4:
LUN Chan  Id  Lun  Vendor   Product          Rev   SN
-----------------------------------------------------
  0   0    0    0  PATHLGHT SAN Gateway      0016  21081303263
  2   1    0    0  IBM      ULT3580-TD1      3512
  3   1    0    1  IBM      03584L32         3060  000000010234
  4   1    1    0  IBM      ULT3580-TD1      3512
  6   2    2    0  IBM      ULT3580-TD1      3512
  8   2    3    0  IBM      ULT3580-TD1      3512

Drive is also looking OK on AIX side, and can be reached using tapeutil
:

lscfg -vl rmt4
DEVICE            LOCATION          DESCRIPTION

  rmt4              11-08-01-3,0      IBM 3580 Ultrium Tape Drive (FCP)

        Manufacturer................IBM
        Machine Type and Model......ULT3580-TD1
        Serial Number...............6811027051
        Device Specific.(FW)........3512

Today I recycled all the hardware : server, 3584, SAN gateway, thinking
it could correct an eventual network error, but still got the problem:

On TSM server initialization :

12/05/03 09:18:13 ANR8470W Initialization failure on drive LTO1DR4 in
library LTOLIB1.

On attempt to redefine the path :
12/05/03 09:29:42 ANR2017I Administrator BAR021 issued command: DEFINE
PATH adsm-pac lto1dr4 srctype=server desttype=drive device=rmt4
library=ltolib1
12/05/03 09:29:42 ANR8420E DEFINE PATH: An I/O error occurred while
accessing drive LTO1DR4.
I'm really lost, has anyone an idea of what could be happening here ?
Many thanks in advance !!!

Arnaud Brion

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