Continuous SCSI polling/errors on CD-ROM in ES40

From: Aldridge, Robert E. <REAldridge_at_mcdermott.com>
Date: Tue, 26 Jun 2001 13:01:14 -0500

Tru64 Managers:

I have two ES40 systems in a cluster. Each system has a CD-ROM device.

If there is NO media in the CD-ROM drive, the system generates continuous
errors like the one below. (Note: The devices are NOT mounted when these
errors occur.)



====================== Binary Error Log event =======================
EVM event name: sys.unix.binlog.hw.scsi

    Binary error log events are posted through the binlogd daemon, and
    stored in the binary error log file, /var/adm/binary.errlog. This
    event is used to report all SCSI device errors, including disk,
    tape, HSZ raid events, and adapter errors.

======================================================================

Formatted Message:
    SCSI event

Event Data Items:
    Event Name : sys.unix.binlog.hw.scsi
    Priority : 400
    Member Id : 2
    Timestamp : 26-Jun-2001 13:27:11
    Host IP address : 131.184.3.50
    Cluster IP address: 131.184.3.52
    Host Name : pluto
    Cluster Name : saturn
    Format : SCSI event
    Reference : cat:evmexp.cat:300

Variable Items:
    subid_class (INT32) = 199
    subid_num (INT32) = 2
    subid_unit_num (INT32) = 128
    subid_type (INT32) = 5
    binlog_event (OPAQUE) = [OPAQUE VALUE: 1056 bytes]

============================ Translation =============================
Sequence number of error: 1050215123
Time of error entry: 26-Jun-2001 13:27:11
Host name: pluto

SCSI CAM ERROR PACKET
Controller type: DISK
SCSI device class: RODIRECT
Bus Number: 2
Target number: 0
Lun Number: 0

Name of routine that logged the event: cdisk_op_spin
Event information: Device Not Ready
Hardware detected event: Hard Error Detected
Device Name: COMPAQ CRD-8402B 1.03
Event information: Active CCB at time of error
Event information: CCB request completed with an error

                ############### Entry End ###############

Event information: Error, exception, or abnormal condition
Event information: NOT READY - Logical unit is NOT ready

                ############### Entry End ###############

======================================================================



If I put CD-ROM media (ANY disc) into the device, the errors STOP.


Have you seen this same issue? Any suggestions on how to resolve it?
So far I have Compaq support stumped.


I don't believe it is a hardware issue with the CD-ROM because:
a. The CD-ROM was replaced on one system, but no change in the errors.
b. The problem occurs on both ES40 systems.


The errors seem to be relatively harmless, however, I must think that this
continuous polling is having an effect on the system performance. The
CD-ROMs are functional (e.g. we can mount and read discs with no problems).



Thank you,

Rob Aldridge
AT&T Solutions (at McDermott Technology, Inc.)
Alliance, Ohio
Received on Tue Jun 26 2001 - 18:01:47 NZST

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