On Tue, 18 Apr 2000, Chris Mauritz wrote:
> Are you SURE it's not a cabling issue? I've had 2940U2w cards act strangely
> both under Linux and NT when there were problems with cables or terminators.
> I've gotten into the habit of using SCA drive cages and keeping the LVD
> cable lengths to a minimum (just between the cage and the controller).
> Also, make sure you have active (not passive) termination.
>
> Cheers,
>
> Chris
Yes, I'm quite sure, since we've had this problem on at least 5 or 6 machines
(all with identical hw-configs).
What I've furthermore seen, is that those servers without striped disks never
have frozen up.
On the other hand, not all striped servers have crashed (yet).
/m
>
> ----- Original Message -----
> From: <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
> Sent: Tuesday, April 18, 2000 12:31 PM
> Subject: adaptec 2940u2w hangups
>
>
> > Hi All!
> >
> > Lately, we have been experiencing some serious problems with our Linux
> servers
> > using RAID0 on Adaptec 2940U2W. The machines, which are under quite some
> load,
> > suddenly dies and must be cold-restarted. When they get back online again,
> > there's is no sign of anything going awry in any logfile. The just plunge
> into
> > deep-freeze, zero-Kelvin mode. *argh*
> >
> > Currently, the machines are running Linux 2.2.14 with latest raid-patches
> > (Mingo's raid-2.2.14-B1-patch), but we've seen the problem under 2.2.13 as
> > well.
> >
> > As I said, there's nothing in the log files that would indicate what's
> wrong.
> > Installing the software watchdog kernel module/watchdogd didn't help
> either.
> >
> > The situation is getting somewhat embarrassing, as we've been pushing
> pretty
> > hard towards Linux. We're considering moving all servers to non-RAID
> > configurations, but we'd really prefer RAID0.
> >
> > I've also noticed a few other postings about problems/hangups with
> 2940/AIC79xx
> > on Linux RAID, so it seems we're not alone with this problem.
> >
> > Does anyone have any kind of information as to the status of this. Is the
> > bug(s) identified? Is there a solution (other than stop using RAID)?
> >
> >
> > Hardware setup: RH Linux 6.1/2.2.14/raid-2.2.14-B1 on dual PIII
> motherboards
> > (ASUS P2B-DS) and U2W SCSI IBM disks, 512+ MB RAM.
> >
> >
> > /m
> >
> >
> >
> >
> >
>
>
/m
