SCSI tape problems

Mogens Kjaer mk at crc.dk
Thu Apr 28 10:18:04 UTC 2005


T. Horsnell wrote:
...
> The problem appears to be that the tapes drop records
> when being written, but that this can be fixed by increasing
> the blocksize.
...

Are you sure that it is during the write operation?

> [root at ls1 ~]$ dd if=tapetest500K of=/dev/st1 bs=10240 ; dd if=/dev/st1 of=junk bs=10240 ; cmp tapetest500K junk
> 48+1 records in
> 48+1 records out
> 36+1 records in
> 36+1 records out
> tapetest500K junk differ: byte 215041, line 854

If you add another

dd if=/dev/st1 of=junk2 bs=10240

does that equal junk or is the error in another position?

The library has two drives, right? Is it a problem on
both drives?

Mogens

-- 
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk at crc.dk Homepage: http://www.crc.dk




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