lkml.org 
[lkml]   [1998]   [Jul]   [9]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateThu, 9 Jul 1998 11:23:21 +0200 (MET DST)
FromCarsten Gross <>
Subject2940U in Ultra mode: ... timed out - resetting
Hello developer list,

I'm using kernel version 2.1.108 compiled for SMP on a Tyan Tomcat II Dual
Pentium Mainboard. 3 harddiscs, a mo drive and a CD-ROM are connected to an
Adaptec 2940U controller. Everything works great together with Linux when
using normal fast SCSI-II mode and ultra support disabled using the
controllers BIOS setup. No timeouts or other problems on the drives.

But what happens if I enable ultra SCSI support?
The inquiry on startup from the Adaptec BIOS works normal with ultra
support enabled. The Linux kernel is loadad quickly by the controller-BIOS
from the harddisc with ID 0 (a Fujitsu 508 MB drive, not ultra capable).

But Linux won't even start. It will hang after printing "(scsi0:0:-1:-1)
Scanning channel for devices." with a endless loop of messages telling me
"... timed out - resetting", "timed out again - trying harder" and so on.

The SCSI bus is terminated active on both ends and the following devices are
attachted to the controller. IMHO this problem is not hardware related,
perhaps a bug in the SCSI driver, because even inquiry on the first device
(non ultra capable) won't work.

cat /proc/scsi/aic7xxx/0 tells me this version number:
Adaptec AIC7xxx driver version: 5.0.19/3.2.4
Compile Options:
  AIC7XXX_RESET_DELAY    : 5
  AIC7XXX_TAGGED_QUEUEING: Adapter Support Enabled
                             Check below to see which
                             devices use tagged queueing
[...]


The following devices are attached:
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: FUJITSU  Model: M2684S-512       Rev: 2036
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: SEAGATE  Model: ST51080N         Rev: 0913
  Type:   Direct-Access                    ANSI SCSI revision: 02

[This following Micropolis drive is U-SCSI capable, I enabled the ultra
option because of this (amazing fast) disc drive]
Host: scsi0 Channel: 00 Id: 02 Lun: 00
  Vendor: MICROP   Model: 4343NS           Rev: X502
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 03 Lun: 00
  Vendor: PLEXTOR  Model: CD-ROM PX-6XCS   Rev: 1.00
  Type:   CD-ROM                           ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 04 Lun: 00
  Vendor: FUJITSU  Model: M2512A           Rev: 1502
  Type:   Optical Device                   ANSI SCSI revision: 02

Thanks a lot for your help

   Carsten


-- 
Carsten Gross                     carsten@sol.wohnheim.uni-ulm.de
Wohnheim Heilmeyersteige        Sebastian Kneipp Weg 6, 89075 Ulm


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu

\
 
 \ /
  Last update: 2005-03-22 13:43    [from the cache]
©2003-2008