Dump to Tape

[Richard Gliebe]

Hi all,

this is my first post to this list, and here comes my problem.

I have to dump an EXT3-Filesystem with a size over than 200G to AIT-5 
Tapes (Sony AIT Library Lib-81 with one AIT Tapedrive)

AIT-5: 400gb of native capacity in a compact 8mm Tape

Now, when I do a normal dump like:
# /sbin/dump -0aun -f /dev/nst0 /data1

dump is interrupts nearly at 200gig are dumped.

I also tried to compress it like:

# /sbin/dump -0aun -b 1024 -j9 -f /dev/nst0 /data1

same situation ;-(

here are some Hardware spezific outputs for our tapelibrary an tapedrive:

# cat /proc/scsi/scsi
Attached devices:
....
Host: scsi1 Channel: 00 Id: 14 Lun: 00
   Vendor: SONY     Model: SDX-1100         Rev: 0103
   Type:   Sequential-Access                ANSI SCSI revision: 03
Host: scsi1 Channel: 00 Id: 15 Lun: 00
   Vendor: SONY     Model: LIB-81           Rev: 010B
   Type:   Medium Changer                   ANSI SCSI revision: 02

# mt -f /dev/nst0 status
drive type = Generic SCSI-2 tape
drive status = 855638016
sense key error = 0
residue count = 0
file number = 0
block number = 0
Tape block size 0 bytes. Density code 0x33 (unknown).
Soft error count since last status=0
General status bits on (41010000):
  BOT ONLINE IM_REP_EN

I also tried to backup this Filesystem which 'tar cvpf and cvzpf' and 
'cpio -ovcB'. Always the same situation.

We are running it on an Ubuntu 6.06.2 LTS - 2.6.15-51-server Box.
I know this Installation is really not up-to-date, because there are 
running some applications which have priority No:1 here.

Any hints are welcome ;-)

Thanks
Richard

-- 
Richard Gliebe
Information Services
Fachhochschule Vorarlberg GmbH / University for Applied Science

Hochschulstrasse 1
A-6850 Dornbirn
T: +43 5572 792 2207
M: richard.gliebe at fhv.at
W: www.fhv.at
FN 165415 h, LG Feldkirch