Tape drive problem

From: unix adm <uunniixx_aaddmmin_at_yahoo.com>
Date: Mon, 09 Aug 1999 06:51:26 -0700 (PDT)

Hi Managers

we have been facing some problems in tape backup. we
use Veritas netbackup with a DLT/Robot arm model ADIC
SCALAR on DU 4.0d pk3.(I wonder in uerf log there is a
entry for quantum DLT)

the symptom is backup software or OS times out after
trying to connect to tape device..this is
intermittent..we have a another AIT is also daisy
chained with a Narrow SCSI controller.when i do a uerf
, I find the messages disturbing but not exactly
understand the meanings..I think, if i interpret the
uerf messages correctly, I am halfway through..

So I am attaching the actual file related with some
irrelevant details filtered .i need some sort of
explanantion or guidance what it is..

and is it related to device or controller etc..

I don't know whether I have correctly extracted info.
(i mean related to tape)from uerf log..

TIA
...........uerf log follows for Aug2 1999.
*********************************************
CAM ENTRY x0000040E SIM_WS

********************************* ENTRY 55.
*********************************

----- EVENT INFORMATION -----

EVENT CLASS ERROR EVENT
OS EVENT TYPE 199. CAM SCSI
SEQUENCE NUMBER 20.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Mon Aug 2
20:10:04 1999


----- UNIT INFORMATION -----

CLASS x0001 TAPE
SUBSYSTEM x0000 DISK
BUS # x0004
                              x0118 LUN x0
                                        TARGET x3

----- CAM STRING -----

ROUTINE NAME ctape_iodone

----- CAM STRING -----

                                        Unexpected CCB
status

----- CAM STRING -----

ERROR TYPE Hard Error
Detected

----- CAM STRING -----

DEVICE NAME QUANTUM
DLT7000 172D

----- CAM STRING -----

                                        Active CCB at
time of error

----- CAM STRING -----

                                        BUS free
ERROR - os_std, os_type = 11, std_type = 10


----- ENT_CCB_SCSIIO -----

CAM_UNEXP_BUSFREE
                                        SIM QFRZN
TARGET ID 3.
TARGET LUN 0.
CAM FLAGS x00000080
                                        CAM_DIR_OUT
CAM_SCSI_STATUS x0000 SCSI_STAT_GOOD


********************************* ENTRY 56.
*********************************

----- EVENT INFORMATION -----

EVENT CLASS ERROR EVENT
OS EVENT TYPE 199. CAM SCSI
SEQUENCE NUMBER 21.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Mon Aug 2
20:10:05 1999



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Received on Mon Aug 09 1999 - 13:54:01 NZST

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