SCSI DAT problems

Bernhard Heidegger (hdg@edvz.tu-graz.ac.at)
Wed, 1 May 1996 22:08:33 +0200 (MET DST)


Hi!

I upgraded the kernel from 1.3.74 to 1.3.9[57]; now I cannot access my
DAT drive anymore. I do
> tar cvf /dev/tape some_file
(/dev/tape is a soft link to st0)
The light of the DAT drive flushes about 5 times. From then on DAT drive
sits there and do nothing :-(
The tar process hangs in D state.
First I thought, that the new st driver make the problem; but I compiled
1.3.95 with the st sources from 1.3.74 (I hope I got all the files which
belong to the st driver :-O
But that wasn't the problem; maybe the new (3.0) aic7xxx driver is the
problem?

Hardware:
Asus P55TP4N, 512kB BurstCache, Pentium-166, 128MB
Adaptec 2940UW
3c509
3c590 (not used)
2x Quantum XP34300W (4GB fastwide) (one intern, one extern)
NEC CD-ROM DRIVE:222 (not used until now)
HP HP35480A DAT II drive

The DAT is on the external bus (wide->scsi2 cable :-{
but I also tried it intern.

Log messages:
May 3 21:58:12 fiicmhm01 kernel: Detected scsi tape st0 at scsi0,
channel 0, id 6, lun 0
May 3 22:13:13 fiicmhm01 kernel: scsi : aborting command due to timeout
: pid 14970, scsi0, channel 0, id 6, lun 0 Write (6) 00 00 28 00 00
May 3 22:13:13 fiicmhm01 kernel: aic7xxx: (abort_reset) scb state 0x1,
Data-Out phase, SCSISIGI = 0x0
May 3 22:13:13 fiicmhm01 kernel: st0: Error with sense data: extra data
not valid Current error st09:00: sense key Not Ready
May 3 22:13:13 fiicmhm01 kernel: Additional sense indicates Logical unit
not ready, cause not reportable
May 3 22:28:13 fiicmhm01 kernel: scsi : aborting command due to timeout
: pid 19970, scsi0, channel 0, id 6, lun 0 Write Filemarks 00 00 00 01 00
May 3 22:28:13 fiicmhm01 kernel: aic7xxx: (abort_reset) scb state 0x1,
Data-Out phase, SCSISIGI = 0x0
May 3 22:28:13 fiicmhm01 kernel: st0: Error with sense data: extra data
not valid Current error st09:00: sense key Not Ready
May 3 22:28:13 fiicmhm01 kernel: Additional sense indicates Medium not
present
May 3 22:28:13 fiicmhm01 kernel: st0: Error on write filemark.

The st driver is now (1.3.97) a module.
The Medium not present is ok, because I removed the medium from the DAT
(the tar process is still in D state)

Thanks in advance

Bernhard.

---
+----------------------------+-------------------------------+
|   hdg@edvz.tu-graz.ac.at   |   bheide@iicm.tu-graz.ac.at   |
+----------------------------+-------------------------------+
| Bernhard Heidegger, Graz University of Technology, Austria |
+------------------------------------------------------------+
Worst day playing is better than best day working!