[OT] scsi tape problems

[Martin Würtele <martin@wuertele.cc>]

hi,

i have a problem with my scsi tape (HP C1537A DDS3):

the scsi ids are set as follows:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: IBM      Model: DNES-318350Y     Rev: SA30
  Type:   Direct-Access                    ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: IBM      Model: DNES-318350Y     Rev: SA30
  Type:   Direct-Access                    ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 03 Lun: 00
  Vendor: HP       Model: C1537A           Rev: L907
  Type:   Sequential-Access                ANSI SCSI revision: 02
inetmain:/etc/afbackup#  

and mt -f /dev/nst0 stat reports 
drive type = Generic SCSI-2 tape
drive status = 620756992
sense key error = 0
residue count = 0
file number = 54
block number = 0
Tape block size 0 bytes. Density code 0x25 (unknown).
Soft error count since last status=0
General status bits on (89010000):
 EOF EOD ONLINE IM_REP_EN

but when i start afbackup the server always reports:
mt: /dev/nst0: Input/output error

but it dows increase the file nr and if i kill it (i know i never should but
as i can't be shure the backup is written...) i see eg
drive type = Generic SCSI-2 tape
drive status = 620756992
sense key error = 0
residue count = 0
file number = 54
block number = 0
Tape block size 0 bytes. Density code 0x25 (unknown).
Soft error count since last status=0
General status bits on (89010000):
 EOF EOD ONLINE IM_REP_EN

and  mt -f /dev/nst0 rewind works as well.

what problem could this be? before changing to the DDS 3 tape drive
the DDS 2 drive worked fine.

any ideas?

tia martin
-- 
GnuPG 1024D/3E8DCCC0 30DC 1D28 1D79 32F5 5E67  3ABB 28EE B35A 3E8D CCC0
   work: factline Krisper Fabro Harnoncourt OEG (www.factline.com)