scsi_id design choices, was: Looking for Patrick Mansfield of scsi_id

[John Huttley <John@mib-infotech.co.nz>]

Hi folks, I've been pokeing in scsi_id trying to understand the 
serialnumber part.

I don't understand the choices patrick made in doing this.
My note to patrick follows:


Hi patrick,

I'm trying to undertstand your scsi_id program.

I'm testing on an LTO drive and the code
seems to call

do_scsi_page83_inquiry() which returns the (not really) serial number.

Why are you doing that? The page is.

sg_inq -vpd --page=0x83 /dev/st2
VPD INQUIRY: Device Identification page
     inquiry cdb: 12 01 83 00 fc 00
     inquiry: requested 252 bytes but got 42 bytes
   Designation descriptor number 1, descriptor length: 38
     id_type: T10 vendor identification,  code_set: ASCII
     associated with the addressed logical unit
       vendor id: HP
       vendor specific: C7438A          HU107108XD



Why not get the real serial number from page 0x80??

sg_inq -vpd --page=0x80 /dev/st2
VPD INQUIRY: Unit serial number page
     inquiry cdb: 12 01 80 00 fc 00
     inquiry: requested 252 bytes but got 14 bytes
   Unit serial number: HU107108XD
close error: No medium found





Mike Anderson wrote:
> John Huttley <John@mib-infotech.co.nz> wrote:
>> The email address in the source file (@ibm) is wrong.
>> Anyone know where he is?
>>
> 
> He is not working for IBM anymore.
> 
> If you have a scsi_id question you can post to this list as scsi_id is
> maintained as part of udev extras.
> 
> -andmike
> --
> Michael Anderson
> andmike@linux.vnet.ibm.com
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