[CentOS] Laptop SCSI capability supported by CentOS 7

On 02/23/2016 02:24 PM, John R Pierce wrote:
> On 2/23/2016 10:19 AM, Lamar Owen wrote:
>> Any ideas are welcomed, other than 'just use a desktop.'  I am not 
>> sure a USB or Firewire to SCSI bridge will work for what I need, 
>> which is connection to an audio-capable DDS2 drive (SGI Firmware 
>> Seagate/Conner/ArDAT Peregrine 4326 that is from an SGI system). 
>> Yeah, I know I can use DATman on IRIX (I have a pair of O2's and a 
>> purple Indigo2 w/ SolidIMPACT), but going forward I'd like to use my 
>> laptop. 
>
>
> do people really still use DAT audio tape ?
>

For what it's worth, I dug up out of my collection of 'stuff' a Xircom 
PortGear USB-SCSI dongle, bought the appropriate adapter from 25 to 50 
pin, and connected it to an SGI-OEM Archive Peregrine/Python drive.  
Here's what CentOS 7 sees:
++++++
[10991.409385] usb 4-1.1: new full-speed USB device number 8 using ehci-pci
[10991.509177] usb 4-1.1: New USB device found, idVendor=1645, 
idProduct=0007
[10991.509186] usb 4-1.1: New USB device strings: Mfr=1, Product=2, 
SerialNumber=5
[10991.509191] usb 4-1.1: Product: Entrega USB to SCSI Converter
[10991.509195] usb 4-1.1: Manufacturer: Entrega Technologies Inc.
[10991.509200] usb 4-1.1: SerialNumber: 07
[10991.515903] usb-storage 4-1.1:1.0: USB Mass Storage device detected
[10991.516044] usb-storage 4-1.1:1.0: Quirks match for vid 1645 pid 0007: 4
[10991.516591] scsi host7: usb-storage 4-1.1:1.0
[10997.259938] scsi 7:0:2:0: Sequential-Access ARCHIVE  Python 01931-XXX 
5.63 PQ: 0 ANSI: 2
[11006.734904] scsi 7:0:2:0: Attached scsi generic sg4 type 1
[11006.745965] st: Version 20101219, fixed bufsize 32768, s/g segs 256
[11006.747264] st 7:0:2:0: Attached scsi tape st0
[11006.747272] st 7:0:2:0: st0: try direct i/o: yes (alignment 512 B)
[11006.752472] osst :I: Tape driver with OnStream support version 0.99.4
osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $
+++++

Hmmm, this might just work.  The firmware rev is good (01931-XXX 5.63) 
and it IS an SGI-branded drive..... now to see if the known Linux 
software from ten years ago will even compile, much less run, on C7.

I have a couple of the SGI-branded external Sony SDT9000's on the way, 
which are considered more reliable for audio extraction, but the 
Peregrine was cheap ($25 including shipping on eBay) and makes a good test.

But I was very pleasantly surprised to see CentOS 7 pick up the 
Xircom/Entrega PGSCSI and run with it; nice.  So anyone else looking for 
laptop SCSI solutions, if you can find a Xircom PortGear USB-SCSI 
adapter it does look like it is supported by C7.