I am getting the feeling that something in the IDE code isn't SMP
safe as all the lockups on SMP I am hearing about involving raid
on IDE.
I have had zero flaws with SMP + raid .. but then I don't use any
IDE components in my systems at all.
HA Quoc Viet wrote:
> "Jason A. Diegmueller" wrote:
> >
> > : A number of us are having similar problems currently with
> > : 2.2.1? with many ide disks and SMP. It is probably worth
> > : sending linux-kernel a summary of your difficulty, as the
> > : topic is being discussed. What Alan would really like is
> > : if you could run 2.2.13pre11 without the raid code, and get a
> > : similar lockup... perhaps just by keying heavy disk activity
> > : on each disk at the same time.. at least this works for the
> > : many-ide-SMP lockups (something like dd if=/dev/sdX of=/dev/null
> > : count=500000 & running on each drive at the same time.
> >
> > For what it's worth, this particular box is NOT running any IDE
> > drives. It has (4) 2.1gb SCSI drives on an aic78xx adapter.
>
> dunno if that's gonna help you a bit or not, but I happen to
> have exactly (4) 4.3gb SCSI drives on an aic78xxx ( the Ultra Wide
> version) too, on an SMP box (2.2.12). however, I boot on an IDE
> drive, and uses no RAID.
>
> This one config is working fine.
>
> I'd say, it's the raid thingy, then ...
>
> Viet
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