Date: Fri, 21 May 1999 11:29:00 +0200 (CEST) From: blank@uni-trier.de To: FreeBSD-gnats-submit@freebsd.org Subject: kern/11815: SCSI tape driver fails on media type recognition Message-ID: <199905210929.LAA00624@uni-trier.de>
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>Number: 11815
>Category: kern
>Synopsis: SCSI tape driver fails on media type recognition
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri May 21 02:40:02 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: Sascha Blank
>Release: FreeBSD 3.2-STABLE i386
>Organization:
>Environment:
A FreeBSD 3.2-STABLE system, CVSupped on Thursday, May 20th at about 18:50
o'clock CEST. A "make world" has been performed after that.
Import messages from dmesg output:
...
ncr0: <ncr 53c815 fast10 scsi> rev 0x03 int a irq 11 on pci0.8.0
...
sa0 at ncr0 bus 0 target 0 lun 0
sa0: <TANDBERG TDC 4100 =07:> Removable Sequential Access SCSI-2 device
sa0: 4.807MB/s transfers (4.807MHz, offset 8)
...
The tape drive's firmware has revision 07:28, and the drive itself is
the only device connected to the ncr0 controller.
ident /usr/src/sys/cam/scsi/scsi_sa.c:
$Id: scsi_sa.c,v 1.16.2.4 1999/05/11 05:40:43 mjacob Exp $
>Description:
When I insert a tape of my choice into the drive and do a "mt status", I
get the following status report:
Mode Density Blocksize bpi Compression
Current: 0x11:QIC-320 1024 bytes 16000 disabled
---------available modes---------
0: 0x11:QIC-320 1024 bytes 16000 none
1: 0x11:QIC-320 1024 bytes 16000 none
2: 0x11:QIC-320 1024 bytes 16000 none
3: 0x11:QIC-320 1024 bytes 16000 none
---------------------------------
Current Driver State: at rest.
---------------------------------
File Number: 0 Record Number: 0
The output is always the same, no matter whether I have inserted a
QIC-120, a QIC-150 or a QIC-1000 tape!
Doing tape operations like reading from or writing to the tape doesn't
make a change either, even a "mt erase" doesn't help; the "mt status"
output after these operations is always the same as shown above (except
for the blocksize that I might have to change to 512 to be able to read
"smaller" tapes like QIC-120s).
>How-To-Repeat:
See above.
>Fix:
The problem is introduced by changes that were made to scsi_sa.c when
going from revision 1.16.2.3 to 1.16.2.4. Going back to version
1.16.2.3 makes the media type recognition work again.
>Release-Note:
>Audit-Trail:
>Unformatted:
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