tape drive i/o error

[Eric Shibata]

Hello everyone, I am trying to get my scsi tape drive to work. Not matter 
what I do I get I/O errors.
for example:

mt -f /dev/st0 status
/dev/st0: Input/output error

mt -f /dev/nst0 status
/dev/nst0: Input/output error

when I run command without a tape in I get:
mt -f /dev/nst0 status

SCSI 2 tape drive:
File number=-1, block number=-1, partition=0.
Tape block size 0 bytes. Density code 0x0 (default).
Soft error count since last status=0
General status bits on (50000):
  DR_OPEN IM_REP_EN



-Tape drive: HP SureStore T4i

-Linux 2.6.9-1.667 i686 GNU/Linux

______________________________________________________________________________________
Command dmesg | grep scsi,  shows:

scsi: ***** BusLogic SCSI Driver Version 2.1.16 of 18 July 2002 *****
scsi: Copyright 1995-1998 by Leonard N. Zubkoff
<lnz at dandelion.com>
scsi0: Configuring BusLogic Model BT-930 PCI Ultra SCSI Host Adapter
scsi0:   Firmware Version: 5.02, I/O Address: 0x2400, IRQ
Channel: 11/Level
scsi0:   PCI Bus: 0, Device: 16, Address: 0x41300000, Host
Adapter SCSI ID: 7
scsi0:   Parity Checking: Enabled, Extended Translation:
Enabled
scsi0:   Synchronous Negotiation: Fast, Wide Negotiation:
Disabled
scsi0:   Disconnect/Reconnect: Enabled, Tagged Queuing:
Enabled
scsi0:   Driver Queue Depth: 255, Scatter/Gather Limit: 128
segments
scsi0:   Tagged Queue Depth: Automatic, Untagged Queue Depth:
3
scsi0:   SCSI Bus Termination: Enabled, SCAM: Disabled
scsi0: *** BusLogic BT-930 Initialized Successfully ***
scsi0 : BusLogic BT-930
Attached scsi tape st0 at scsi0, channel 0, id 4, lun 0

------------------------------------------------------------------------------------Command 
lsmod, reveals:

Module          Size            Used by
parport_pc      24705   1
lp               11565          0
parport          41737          2 parport_pc,lp
autofs4          24005          0
i2c_dev          10433          0
i2c_core         22081          1 i2c_dev
sunrpc           160421         1
md5              4033   1
ipv6             232577         12
uhci_hcd         31449          0
e100             39364          0
mii              4673   1 e100
floppy           58609          0
st               34781          0
BusLogic         71645          0
scsi_mod         118417         2 st,BusLogic
dm_snapshot      17029          0
dm_zero          2369   0
dm_mirror        23341          2
ext3             116809         2
jbd              74969          1 ext3
dm_mod           54741          6 dm_snapshot,dm_zero,dm_mirror
--------------------------------------------------------------------------------
/proc/scsi/scsi:

Attached devices:
Host: scsi0 Channel: 00 Id: 04 Lun: 00
   Vendor: HP       Model: T4000s     Rev: 1.07
   Type: Sequential-Access            ANSI SCSI revision: 02

--------------------------------------------------------------------------------
/proc/interrupts:

            CPU0
   0:  172064414          XT-PIC  timer
   1:        694          XT-PIC  i8042
   2:          0          XT-PIC  cascade
   8:          1          XT-PIC  rtc
  11:     695379          XT-PIC  BusLogic BT-930, uhci_hcd, eth0
  12:      48430          XT-PIC  i8042
  14:     249976          XT-PIC  ide0
  15:     515911          XT-PIC  ide1
NMI:          0
ERR:          0
--------------------------------------------------------------------------------

If you need any more info, please let me know.
Any ideas greatly appreciated.

ERS
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