SUMMARY: Errors on a tape drive

From: John Losey <JOHLOS_at_HBSI.COM>
Date: Mon, 07 Feb 2000 17:17:46 -0800

The consensus is that I should contact Field Service. They are checking for
a replacement part and are going to schedule a time with me to replace the
drive.

John

-----Original Message-----
From: John Losey [mailto:JOHLOS_at_HBSI.COM]
Sent: Monday, February 07, 2000 1:03 PM
To: Tru64 UNIX Managers Group (E-mail)
Subject: Errors on a tape drive


I've got a TZ89 DLT drive connected to an AS8400. When I load a tape and do
a `file /dev/nrmt0h` on the device I see this:
/dev/nrmt0h: character special (9/1027) SCSI #0 TZ89 tape #1 (SCSI ID
#1) (SCSI LUN #0) errors = 0/58 85700_bpi

The DECEvent entry is below and would seem to indicate a media error with
the tape, except that this has happened with about 10 different tapes since
Saturday. Are all of my tapes going flaky at once? or is this more likely a
problem with the drive?

The cleaning light hasn't gone on, but I've run a cleaning tape in the drive
after a few of these errors.

Thanks,

John


DECEvent entry:
******************************** ENTRY 1 ********************************


Logging OS 2. Digital UNIX
System Architecture 2. Alpha
Event sequence number 60.
Timestamp of occurrence 07-FEB-2000 12:12:32
Host name arthur

System type register x0000000C AlphaServer 8x00
Number of CPUs (mpnum) x00000002
CPU logging event (mperr) x00000008

Event validity 1. O/S claims event is valid
Event severity 3. High Priority
Entry type 199. CAM SCSI Event Type


------- Unit Info -------
Bus Number 0.
Unit Number x0008 Target = 1.
                                     LUN = 0.
------- CAM Data -------
Class x01 Tape
Subsystem x01 Tape
Number of Packets 9.

------ Packet Type ------ 258. Module Name String

Routine Name ctape_iodone

------ Packet Type ------ 260. Hardware Error String

Error Type Hard Error Detected

------ Packet Type ------ 257. Device Name String

Device Name DEC TZ89 (C) DEC1837

------ Packet Type ------ 256. Generic String

                                     Active CCB at time of error

------ Packet Type ------ 256. Generic String
                                     CCB request completed with an error

------ Packet Type ------ 1. SCSI I/O Request CCB(CCB_SCSIIO)
Packet Revision 76.

CCB Address xFFFFFC00FFDBF580
CCB Length x00C0
XPT Function Code x01 Execute requested SCSI I/O
CAM Status xC4 CCB Request Completed WITH Error
                                     SIM Queue Frozen with this Error
                                     Autosense Data Valid for Target
Path ID 0.
Target ID 1.
Target LUN 0.
CAM Flags x00000040 Data Direction (01: DATA IN)
*pdrv_ptr xFFFFFC00FFDBF228
*next_ccb x0000000000000000
*req_map xFFFFFC00FFD6A500
void (*cam_cbfcnp)() xFFFFFC00004FEFE0
*data_ptr x00000000001E2000
Data Transfer Length 262144.
*sense_ptr xFFFFFC00FFDBF250
Auotsense Byte Length 72.
CDB Length 6.
Scatter/Gather Entry Cnt 0.
SCSI Status x02 Check Condition
Autosense Residue Length x2A
Transfer Residue Length x00040000
(CDB) Command & Data Buf

          15--<-12 11--<-08 07--<-04 03--<-00 :Byte Order
 0000: 00000000 00000000 00040008 * ............*

Timeout Value x00000146
*msg_ptr x0000000000000000
Message Length 0.
Vendor Unique Flags x0000
Tag Queue Actions x00

------ Packet Type ------ 256. Generic String

                                     Error, exception, or abnormal condition

------ Packet Type ------ 256. Generic String

                                     MEDIUM ERROR - Nonrecoverable medium
error

------ Packet Type ------ 768. SCSI Sense Data
Packet Revision 0.

Error Code xF0 Current Error
                                     Information Bytes are Valid
Segment # x00
Information Byte 3 x00
            Byte 2 x04
            Byte 1 x00
            Byte 0 x00
Sense Key x03 Medium Error
Additional Sense Length x16
CMD Specific Info Byte 3 x00
                  Byte 2 x00
                  Byte 1 x79
                  Byte 0 x0F
ASC & ASCQ x1100 ASC = x0011
                                     ASCQ = x0000
                                     Unrecovered Read Error
FRU Code x00
Sense Key Specific Byte 0 x00 Sense Key Data NOT Valid
                   Byte 1 x00
                   Byte 2 x00

Addition Sense Data Size Allocated by Driver

Count of valid bytes: 54.


          15--<-12 11--<-08 07--<-04 03--<-00 :Byte Order
 0000: 00000000 00FAD57A 007A2100 00930280 *.....!z.z.......*
 0010: 00000000 00000000 00000000 00000000 *................*
 0020: 00000000 00000000 00000000 00000000 *................*
 0030: 00000000 7E250000 00000000 00000000 *..........%~<^..*



******************************** ENTRY 2 ********************************
Received on Tue Feb 08 2000 - 01:19:53 NZDT

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