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List:       freebsd-hackers
Subject:    Re: SCSI Tape (HP SureStore T20) trouble
From:       Matthew Jacob <mjacob () feral ! com>
Date:       1999-02-27 2:01:59
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On Fri, 26 Feb 1999, Josh MacDonald wrote:

> I just installed a HP SureStore T20 SCSI tape drive on 3.0-RELEASE.
> My kernel is configured with the sa0 device, and dmesg reports:
> 
> sa0 at ncr0 bus 0 target 5 lun 0
> sa0: <HP T20 3.00> Removable Sequential Access SCSI2 device 
> sa0: 3.300MB/s transfers

Synchronous mode? How cheap....

> 
> when I boot.  My other SCSI devices have been, and continue to work
> just fine.
> 
> When I run `mt status' I get 3 lines of console message:
> 
> (sa0:ncr0:0:5:0): PREVENT ALLOW MEDIUM REMOVAL. CDB: 1e 0 0 0 1 0 
> (sa0:ncr0:0:5:0): ILLEGAL REQUEST asc:20,0
> (sa0:ncr0:0:5:0): Invalid command operation code

That's been cleaned up recently. It's 'do not worry' anyway.

> 
> and the output:
> 
> Mode      Density         Blocksize      bpi      Compression
> Current:  0x47            512 bytes      0        unsupported
> ---------available modes---------
> 0:        0x47            512 bytes      0        unsupported
> 1:        0x47            512 bytes      0        unsupported
> 2:        0x47            512 bytes      0        unsupported
> 3:        0x47            512 bytes      0        unsupported
> 
> The density 0x47 is not listed in the mt man page.  It is a minicartridge
> format (QIC-3220) with a native capacity of 10GB.  Does anyone know what 
> this means?
> 


This means this is what the drive is reporting as the density code.

I don't know what this particular drive is, but I suspect that sadness
for 3.0-RELEASE may result if it's QIC of some kind. I'd get a 3.1-STABLE
kernel, and even then not all the QIC related bugs have been shaken out
(I'm still working on a couple).


-mtt




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