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Date:      Fri, 5 Mar 1999 19:09:33 +0000 (GMT)
From:      Andy Doran <ad@psn.ie>
To:        Bernd Walter <ticso@cicely.de>
Cc:        sthaug@nethelp.no, stephw@xs4all.nl, freebsd-hackers@FreeBSD.ORG
Subject:   Re: adaptec 2940u2w hangs on external disks
Message-ID:  <Pine.BSF.4.05.9903051906040.291-100000@vmunix.psn.ie>
In-Reply-To: <19990305174344.A85423@cicely7.cicely.de>

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I believe that this is an issue with CAM. I have a bunch of DEC RZ25 disks
here which work fine with ULTRIX, NetBSD and Linux on several different
machines. After upgrading from FreeBSD-2.2.6 to 3.0 (and -current)
the system hangs on boot whenever an RZ25 is hooked up. This is with a
crappy 'ol Adaptec 1542CP controller.

Andy.

> > > We now got 3 boxes converted from bsdi to freebsd 3.1R with two 
> > > adaptec 2940U2W with Seagate ST39102 ultra2lv disks. We tried 
> > > attaching only one outside disk to only one controller but the 
> > > problem still persists. Once in a while freebsd will not boot, but 
> > > hang during boot up, after 'waiting for scsi devices to settle.'  
> > > We tried the same controller with the same scsi setup, and the same  
> > > disks in a linux box and the problem didnt occur, so it's definetely 
> > > some freebsd problem. 
> > > 
> > > Is this problem known yet, and is there some fix for it ?
> > 
> > A possibly related problem we've seen here: FreeBSD sometimes needs a
> > hard reset (hit reset button) to reboot, while a software reboot will
> > hang during bootup.
> > 
> > This happens on FreeBSD boxes with 3.1R or 3.1-STABLE, onboard Adaptec
> > 7890 U2W controller. Various (Seagate, IBM) LVD disks on LVD chain,
> > *and* DAT on single-ended chain. Using verbose boot, we see that the
> > hang occurs while probing the DAT and/or the CDROM player on the SE
> > chain.
> > 
> I also seeing this kind of problem on 3 independent ASUS P2BLS Boards.
> Another board (Maybe later revision) is not showing this.
> We have tried a bios update and several FreeBSD Versions including some
> 4.0-current - but the problem still exists.
> I remember that boot -v showed something that I wanted to send to the
> FreeBSD-SCSI list - but I didn't yet because I don't have it logged.
> It stopped after probing some but not all drives before it would print the
> non -v informations.
> I expect this problem has something to do with the aic revision on that boards.
> I'll try to get the boot -v informations and the revision next week.




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