[OS:N:] Problems to restore a backup from AIT Tape Drive w/ RH8.0

Hello,
I use RH 8.0, with Adaptec 19160 Ultra 160 and Sony AIT-2 to do my backups. Everything was fine, but yesterday I have to restore a file and I can´t.

I can see what I have inside my tape, using 

#tar -tvf /dev/st0 

but when I try to extract my backup using 

#tar -xvf /dev/st0 somedirectory/somesubdirectory/myfile 

I get this error messages from my /var/log/messages 90 minutes later I typed the command : 

Jul 14 11:27:53 servarq kernel: (scsi0:A:0:0): Unexpected busfree in Data-in phase
Jul 14 11:27:53 servarq kernel: SEQADDR == 0x8c
Jul 14 11:27:53 servarq kernel: st0: Error 70000 (sugg. bt 0x0, driver bt 0x0, host bt 0x7).
Jul 14 11:27:53 servarq kernel: st0: Error 10000 (sugg. bt 0x0, driver bt 0x0, host bt 0x1).
Jul 14 11:27:56 servarq last message repeated 9 times
Jul 14 11:27:56 servarq kernel: st0: Error with sense data: Info fld=0x40, Current st09:00: sense key Unit Attention
Jul 14 11:27:56 servarq kernel: Additional sense indicates Power on,reset,or bus device reset occurred
Jul 14 11:27:56 servarq kernel: st0: Error with sense data: Current st09:00: sense key Not Ready
Jul 14 11:27:56 servarq kernel: Additional sense indicates Medium not present

I am completely lost ... Somebody could help me or simply give an idea on what is happening ????

Regards.

InfraNet Tecnologia
Fábio M. A. Cunha
(55 11) 5542-0941 ramal 22
(55 11) 8456-5283
www.infranetsp.com.br
www.fsf.org

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