Date: Sat, 10 Feb 1996 20:46:17 -0800 (PST) From: "Jonathan M. Bresler" <jmb> To: scsi Cc: hardware Subject: Archive Anaconda SCSI-2 is really SCSI-1 Message-ID: <199602110446.UAA12334@freefall.freebsd.org>
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the archive anaconda 1.35GB QIC tape drive may be a SCSI-1 device not a
SCSI-2 as advertised.
INQUIRY command output delares the unit to be SCSI-1
Aspen:[143] scsi -f /dev/st0ctl.0 -c "12 0 0 0 64 0" -i 64 -
SCIOCCOMMAND ioctl: Command accepted.
host adapter status 110
Command out (6 of 6):
12 00 00 00 64 00
Data in (64 of 64):
01 80 01 00 31 00 00 00 41 52 43 48 49 56 45 20 # ....1...ARCHIVE
41 4e 43 44 41 20 32 37 35 30 20 32 38 30 37 37 # ANCDA 2750 28077
2d 30 30 33 20 20 20 20 36 2e 30 30 20 20 00 00 # -003 6.00 ..
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 # ................
No sense sent.
Furthermore the unit rejects MODE SENSE commands with page control = 01
and page code = 0x3f
Aspen:[174] scsi -f /dev/st0ctl.0 -c "0x1A 0 0x3f 0 0xff 0" -i 255 -
SCIOCCOMMAND ioctl: Command accepted.
return status 3 (Sense Returned)Command out (6 of 6):
1a 00 3f 00 ff 00
Data in (0 of 255):
Error code is "current errors"
Segment number is 00
Sense key is "Illegal request"
The Information field is not valid but contains 00000000 (0).
The Command Specific Information field is 00000000 (0).
Additional sense code: 00
Additional sense code qualifier: 00
sense (32 of 48):
70 00 05 00 00 00 00 06 00 00 00 00 00 00 00 00
00 00 60 1e cb 08 40 34 62 00 1c 11 00 00 00 00
The QIC implementation of the SCSI-2 spec references QIC-95-101 for tape
medium type and density codes. anyone have a copy? i will call QIC on monday
to get one. so far i have:
tape in drive medium code density code
----------------------------------------------------------------
QIC-1350 (DC-9135) 0x23 0x00
(DC-6250) 0x06 0x10
QIC-150 (QD-6150) 0x06 0x10
the unit can read QD-6150 tapes.
FreeBSD does recognize the difference between QIC-150 and QIC-1350 tapes
as reflected in the output 'mt -f /dev/rst0 status' ;)
--
Jonathan M. Bresler FreeBSD Postmaster jmb@FreeBSD.ORG
FreeBSD--4.4BSD Unix for PC clones, source included. http://www.freebsd.org/
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