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From: Arno <arno@heho.snv.jussieu.fr>
Date: 19 Nov 2003 01:00:36 +0100
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cc: freebsd-scsi@freebsd.org
Subject: Re: More Adaptec 29320 + Seagate ST336607LW woes
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Hello,

> Ok. Got a panic with me present.
> 
> [card dump]
> panic: Waiting List traversal

I see, since "ages" the same behaviour of "SEAGATE ST318436LW 0005"
disks on 2940 an 29160 controllers, especially under "heavy" load
(tar --blocking-factor=20480 copy data to and from ata-disk +
tape-backup over ahc + dd on another scsi-disk ).
Disabling Tagged Queueing makes them disappear.
I also set correct terminaton in the adapter BIOS rather than
automatic, but I doubt that is related.
These are computation intensive lab servers.

You might give it a try (if ever ST336607LW support tag-queuing ...)

Arno