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Date:      Mon, 22 Nov 1999 11:22:42 -0500
From:      Simon Rak <sirak@acad.ursinus.edu>
To:        freebsd-questions@FreeBSD.ORG
Subject:   SCSI DDS2 tape fails
Message-ID:  <38396DD2.1094F4BB@acad.ursinus.edu>

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Hi,

A while ago, I started to have this problem with my DDS2 (DAT-2) tape
backup. Any time that I try to write more than a few megs to it (with
either dump, cpio or tar), it flukes out after a while. I'm attaching
the complete output of a dmesg. 

The system is running 1.2.8 an is kept reasnably up to date. The error
started occuring around the time I upgraded to 1.2.6, but I don't think
that it is necessarily related to the upgrade. Is this a hardware error,
or do I need to reconfigure something? 

Please CC any responses to <sirak@ursinus.edu>, as I don't subscribe to
the list. 

Thanks,
Simon Rak

$ 'dmesg'
Copyright (c) 1992-1998 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
	The Regents of the University of California.  All rights reserved.

FreeBSD 2.2.8-STABLE #0: Wed May 19 18:52:14 EDT 1999
    root@XXX.XXX.XXX:/usr/src/sys/compile/CUSTOM
CPU: Pentium/P54C (96.72-MHz 586-class CPU)
  Origin = "GenuineIntel"  Id = 0x526  Stepping=6
  Features=0x3bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC>
real memory  = 33554432 (32768K bytes)
avail memory = 31031296 (30304K bytes)
eisa0: <MIC54 (System Board)>
Probing for devices on the EISA bus
Probing for devices on PCI bus 0:
chip0 <Intel 82434NX (Neptune) PCI cache memory controller> rev 17 on
pci0:0:0
chip1 <Intel 82375EB PCI-EISA bridge> rev 5 on pci0:2:0
ahc0 <Adaptec 2940 SCSI host adapter> rev 3 int a irq 11 on pci0:13:0
ahc0: aic7870 Wide Channel, SCSI Id=7, 16 SCBs
ahc0 waiting for scsi devices to settle
(ahc0:0:0): "IBM XP32150W      !y 81K6" type 0 fixed SCSI 2
sd0(ahc0:0:0): Direct-Access 2150MB (4404489 512 byte sectors)
(ahc0:2:0): "AIWA GD-8000 0109" type 1 removable SCSI 2
st0(ahc0:2:0): Sequential-Access density code 0x24,  drive empty
ahc0:A:3: refuses WIDE negotiation.  Using 8bit transfers
(ahc0:3:0): "IBM CDRM00203 BZ26" type 5 removable SCSI 2
cd0(ahc0:3:0): CD-ROM can't get the size
ahc0:A:4: refuses WIDE negotiation.  Using 8bit transfers
(ahc0:4:0): "QUANTUM TRB730S 043C" type 0 fixed SCSI 2
sd1(ahc0:4:0): Direct-Access 699MB (1431760 512 byte sectors)
xl0 <3Com 3c905 Fast Etherlink XL 10/100BaseTX> rev 0 int a irq 10 on
pci0:14:0
xl0: Ethernet address: XX:XX:XX:XX:XX:XX
xl0: autoneg complete, link status good (full-duplex, 100Mbps)
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: FIFO enabled, 8 bytes threshold
fd0: 1.44MB 3.5in
npx0 flags 0x1 on motherboard
npx0: INT 16 interface
Intel Pentium detected, installing workaround for F00F bug
st0(ahc0:2:0): SCB 0x0 - timed out while idle, LASTPHASE == 0x1,
SCSISIGI == 0x0
SEQADDR = 0x8 SCSISEQ = 0x12 SSTAT0 = 0x5 SSTAT1 = 0xa
st0(ahc0:2:0): Queueing an Abort SCB
st0(ahc0:2:0): Abort Message Sent
st0(ahc0:2:0): SCB 0 - Abort Completed.
st0(ahc0:2:0): no longer in timeout
st0(ahc0:2:0): SCB 0x2 - timed out while idle, LASTPHASE == 0x1,
SCSISIGI == 0x0
SEQADDR = 0x4 SCSISEQ = 0x12 SSTAT0 = 0x5 SSTAT1 = 0xa
st0(ahc0:2:0): Queueing an Abort SCB
st0(ahc0:2:0): Abort Message Sent
st0(ahc0:2:0): SCB 2 - Abort Completed.
st0(ahc0:2:0): no longer in timeout
st0(ahc0:2:0): SCB 0x2 - timed out while idle, LASTPHASE == 0x1,
SCSISIGI == 0x0
SEQADDR = 0x4 SCSISEQ = 0x12 SSTAT0 = 0x5 SSTAT1 = 0xa
st0(ahc0:2:0): Queueing an Abort SCB
st0(ahc0:2:0): Abort Message Sent
st0(ahc0:2:0): SCB 2 - Abort Completed.
st0(ahc0:2:0): no longer in timeout
st0(ahc0:2:0): SCB 0x2 - timed out while idle, LASTPHASE == 0x1,
SCSISIGI == 0x0
SEQADDR = 0x6 SCSISEQ = 0x12 SSTAT0 = 0x5 SSTAT1 = 0xa
st0(ahc0:2:0): Queueing an Abort SCB
st0(ahc0:2:0): Abort Message Sent
st0(ahc0:2:0): SCB 2 - Abort Completed.
st0(ahc0:2:0): no longer in timeout
st0(ahc0:2:0): Target Busy
sd0(ahc0:0:0): SCB 0x2 - timed out in message out phase, SCSISIGI ==
0xb4
SEQADDR = 0x99 SCSISEQ = 0x12 SSTAT0 = 0x5 SSTAT1 = 0x2
st0(ahc0:2:0): abort message in message buffer
st0(ahc0:2:0): SCB 0x3 - timed out in message out phase, SCSISIGI ==
0xb4
SEQADDR = 0x99 SCSISEQ = 0x12 SSTAT0 = 0x5 SSTAT1 = 0x2
st0(ahc0:2:0): no longer in timeout
ahc0: Issued Channel A Bus Reset. 2 SCBs aborted
sd0(ahc0:0:0): UNIT ATTENTION asc:29,2 
, retries:3


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