Thanks for your note Jussi.

I don't think that this applies here.  The tape drive is alone on this
controller.

Cheers, Luc.

Jussi Laako wrote:
> 
> Luc Lalonde wrote:
> >
> > I suspect that it is a problem with the Adaptec 39160 SCSI controller
> > that is on my system (aic799).  The lockups always occur when I'm
> > backing up to my HP DAT40 that is connected to channel A of this SCSI
> 
> Our HP DAT (24 GB) occasionally locks up. This doesn't lead to system
> lockup, but it's probably because there are no HDDs connected to SCSI bus.
> Resetting the DAT (by cycling power) doesn't help, the SCSI
> controller/driver gets somehow confused. It requires hardware reset.
> 
> This happened also with OpenBSD, although power cycling the DAT fixed the
> situation there. I believe it's either buggy software in DAT drive or the
> drive is breaking up (those thingies seem to last for about two years). (Or
> there is some other SCSI hardware related issue.)
> 
> I have tested this with 2940/2930 cards. I think it could lead to system
> lockup if there were SCSI HDD with swap connected to same controller.
> 
>  - Jussi Laako
> 
> --
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-- 
Luc Lalonde, Responsable du reseau GIREF

Telephone: (418) 656-2131 poste 6623
Courriel: llalonde@giref.ulaval.ca