SCSI tape drive errors?

From: <rdmurphy_at_acs.bu.edu>
Date: Fri, 30 Jun 1995 10:21:46 -0400

We have an HP 35480A DAT tape drive connected to our Alpha (DEC 2000axp
Model 300 - see below for the uerf SYSTEM STARTUP entry). Twice in
recent weeks it has generated some CAM SCSI ERROR reports in the uerf
log. In addition, I had an odd problem last night with a backup job:
the dump apparently worked find, but the restore step (to list the dump
set) somehow went into a loop. The file system filled up and the log
file contained thousands of copies of the dump set listing.

After the first reported error, I ran tapex with the full set of tests
(the one which takes hours, I forget the flag) and everything seemed
fine.

Q1) Does any one know what the uerf log events shown below indicate?

Q2) Is the restore listing problem likely to be related? (One
additional bit of information: I was not in yesterday and it appears my
boss was looking at/fooling with/doing ? to our backup directories and
files. She may have inadvertently done ... something.)

Thanks for any help you can offer.

Russ Murphy
Boston Research Data Center
US Bureau of the Census
2 Copley Place
Boston, Massachusetts
rdmurphy_at_bu.edu
rmurphy_at_census.gov


                                                  uerf version 4.2-011 (122)


********************************* ENTRY 1. *********************************

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

EVENT CLASS ERROR EVENT
OS EVENT TYPE 199. CAM SCSI
SEQUENCE NUMBER 16.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Thu Jun 29 15:14:21 1995
OCCURRED ON SYSTEM MARSHALL
SYSTEM ID x00580006 CPU TYPE: DEC 2000
SYSTYPE x00000000

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

CLASS x0001 TAPE
SUBSYSTEM x0000 DISK
BUS # x0000
                              x0018 LUN x0
                                        TARGET x3

********************************* ENTRY 2. *********************************

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

EVENT CLASS ERROR EVENT
OS EVENT TYPE 199. CAM SCSI
SEQUENCE NUMBER 15.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Thu Jun 29 15:14:21 1995
OCCURRED ON SYSTEM MARSHALL
SYSTEM ID x00580006 CPU TYPE: DEC 2000
SYSTYPE x00000000

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

CLASS x0001 TAPE
SUBSYSTEM x0000 DISK
BUS # x0000
                              x0018 LUN x0
                                        TARGET x3


********************************* ENTRY 16. *********************************

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

EVENT CLASS ERROR EVENT
OS EVENT TYPE 199. CAM SCSI
SEQUENCE NUMBER 1.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Sat Jun 24 04:09:02 1995
OCCURRED ON SYSTEM MARSHALL
SYSTEM ID x00580006 CPU TYPE: DEC 2000
SYSTYPE x00000000

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

CLASS x0001 TAPE
SUBSYSTEM x0000 DISK
BUS # x0000
                              x0018 LUN x0
                                        TARGET x3


********************************* ENTRY 17. *********************************

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

EVENT CLASS OPERATIONAL EVENT
OS EVENT TYPE 300. SYSTEM STARTUP
SEQUENCE NUMBER 0.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Mon Jun 12 08:43:38 1995
OCCURRED ON SYSTEM MARSHALL
SYSTEM ID x00580006 CPU TYPE: DEC 2000
SYSTYPE x00000000
MESSAGE PCXAL keyboard, language English
                                         _(American)
                                         
                                        Alpha boot: available memory from
                                         _0x7ba000 to 0x4000000
                                        DEC OSF/1 V3.0 (Rev. 347); Tue Mar 7
                                         _20:17:59 EST 1995
                                        physical memory = 64.00 megabytes.
                                        available memory = 53.80 megabytes.
                                        using 238 buffers containing 1.85
                                         _megabytes of memory
                                        DEC2000 model 300 system
                                        Firmware revision: 1.4
                                        PALcode: OSF version 1.35
                                        ibus0 at nexus
                                        ace0 at ibus0
                                        gpc0 at ibus0
                                        eisa0 at ibus0
                                        vga0 at eisa0
                                         1024X768
                                        ln0 at eisa0
                                        ln0: DEC LANCE Ethernet Interface,
                                         _hardware address: 08-00-2B-91-52-42
                                        aha0 at eisa0 slot 6
                                        scsi0 at aha0
                                        rz0 at scsi0 bus 0 target 0 lun 0 (DEC
                                         _ RZ26 (C) DEC 392A)
                                        rz4 at scsi0 bus 0 target 4 lun 0 (DEC
                                         _ RRD44 (C) DEC 1094)
                                        rz6 at scsi0 bus 0 target 6 lun 0
                                         _(SEAGATE ST410800N 0016)
                                        tz3 at scsi0 bus 0 target 3 lun 0 (HP
                                         _ HP35480A 1009)
                                        kn121_enable_central_interrupt:
                                         _non-existant interrupt 0xb
                                        fdi0 at eisa0
                                        fd0 at fdi0 unit 0
                                        lp0 at ibus0
                                        lvm0: configured.
                                        lvm1: configured.
                                        dli: configured
                                        SuperLAT. Copyright 1993 Meridian
                                         _Technology Corp. All rights
                                         _reserved.
Received on Fri Jun 30 1995 - 17:14:31 NZST

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