Re: Adaptec SCSI driver lockups

From: Jussi Laako (jlaako@pp.htv.fi)
Date: Thu Jul 12 2001 - 17:06:38 EST


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

-- 
PGP key fingerprint: 161D 6FED 6A92 39E2 EB5B  39DD A4DE 63EB C216 1E4B
Available at PGP keyservers
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Sun Jul 15 2001 - 21:00:18 EST