> When i run amtapetype i get the following
>
> $ amtapetype -e 100gig -f /dev/nst0
> Writing 1024 Mbyte   compresseable data:  47 sec
> Estimate phase 2...amtapetype: could not write any data in this pass:
short
> write

and i've just found this in the messages for this machine.

Jun 24 14:24:20 xxxxxx kernel: st0: Block limits 1 - 16777215 bytes.
Jun 24 14:30:07 xxxxxx kernel: st0: Error with sense data: Info fld=0x20,
Current st09:00: sense key Aborted Command
Jun 24 14:30:07 xxxxxx kernel: Additional sense indicates Data phase error
Jun 24 14:42:23 xxxxxx kernel: st0: Error with sense data: Info fld=0x20,
Current st09:00: sense key Aborted Command
Jun 24 14:42:23 xxxxxx kernel: Additional sense indicates Data phase error
Jun 24 14:46:39 xxxxxx kernel: st0: Error with sense data: Info fld=0x20,
ILI Current st09:00: sense key Aborted Command
Jun 24 14:46:39 xxxxxx kernel: Additional sense indicates Data phase error
Jun 24 14:46:39 xxxxxx kernel: st0: Incorrect block size.
Jun 24 14:47:50 xxxxxx kernel: st0: Error with sense data: Info fld=0x20,
ILI Current st09:00: sense key Aborted Command
Jun 24 14:47:50 xxxxxx kernel: Additional sense indicates Data phase error
Jun 24 14:47:50 xxxxxx kernel: st0: Incorrect block size.
Jun 24 15:23:53 xxxxxx kernel: st0: Error with sense data: Info fld=0x20,
Current st09:00: sense key Aborted Command
Jun 24 15:23:53 xxxxxx kernel: Additional sense indicates Data phase error
Jun 24 18:20:53 xxxxxx kernel: st0: Error with sense data: Info fld=0x20,
Current st09:00: sense key Aborted Command
Jun 24 18:20:53 xxxxxx kernel: Additional sense indicates Data phase error
Jun 24 18:26:58 xxxxxx kernel: st0: Error with sense data: Info fld=0x20,
Current st09:00: sense key Aborted Command
Jun 24 18:26:58 xxxxxx kernel: Additional sense indicates Data phase error

can anyone advise me how to determine the block size of this tape?

Tom