Thread (3 messages) 3 messages, 3 authors, 1999-05-02

Re: mesh problem ?

From: Geert Uytterhoeven <hidden>
Date: 1999-05-02 12:53:56

On Fri, 30 Apr 1999, Michel Lanners wrote:
On  28 Apr, this message from Ralf Weidemann echoed through cyberspace:
quoted
I have today installed a new drive, so I'm not sure if it is
a problem with the drive itself or maybe a mesh problem. I
got several system lockups until yet and the below I got while
I tried to fsck the disk after an ealier crash. After rebooting
I tried again fsck the drive and all went fine. 

Hmm, should I get a new drive or could it be a mesh problem ?
This is a wide scsi drive with an adapter if it somehow matter.
That could be a problem with the IBM drive attempting negotiation for
SCSI parameters the MESH driver doesn't know about. If I'm reading your
log correctly, your new drive is a 'wide' type? Did you use a
wide-to-narrow adaptor, and terminate the upper 8 bits? 

Then, you might want to look for jumpers on the drive disabling certain
features, like wide negotiation, Target Initiated Sync negotiation
(that used to be my problem with an IBM drive a long time ago), and so
on. Try disabling thes features and see if it helps.
If this might help: before I had a Sym875 UW-SCSI board, I had connected my
Quantum Viking II U2W to the MESH using a wide-to-narrow adapter. I didn't have
to change any jumpers when moving the drive.

IBM driver may behave different.

Greetings,

						Geert

--
Geert Uytterhoeven                     Geert.Uytterhoeven@cs.kuleuven.ac.be
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}  http://www.cs.kuleuven.ac.be/~geert/
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium


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