Re: Promise PDC20269 (Ultra133 TX2) + Software RAID

[Pedro Larroy <piotr _at_ xxxxxxxxxxxxxx>]

On Wednesday 04 February 2004 23:06, Bartlomiej Zolnierkiewicz wrote:
> On Wednesday 04 of February 2004 22:22, Andreas Steinmetz wrote:
> > Pedro Larroy wrote:
> > > On Tue, Feb 03, 2004 at 02:08:31PM +1030, Ryan Verner wrote:
> > >>And the machine is randomly locking up, and of course, on reboot, the
> > >>raid array is rebuilt.  Ouch.  Any clues as to why?  I'm sure the hard
> > >>drive hasn't failed as it's brand new; I suspect a chipset
> > >>compatibility problem or something.
> > >>
> > >>R
> > >
> > > I have similar issues with 20269. I have two cards on one box doing sw
> > > raid5 on 6 ide drives. It only runs stably with 2.4.19
> > > It has been many months since I assembled that box, and I've tried
> > > kernels from 2.4.20-ac, 2.5.x, 2.6.2  and all hang after some time
> > > running.
> > >
> > > I remember that pdcs also hanged a dual processor box.
> >
> > In my case (see my mail to lkml today) I do suspect concurrent disk
> > access and IO-APIC to be the culprit. If you're using an IO-APIC try
> > booting with either "noapic" or "hdx=serialize" where hdx is one of the
> > disks of your controller card.
>
> Try "noapic" first, "hdx=serialize" will kill you RAID performance.
>
> ---bart

That box doesn't have APIC. just XT-PIC   :(

-- 
  Pedro Larroy Tovar  |  piotr%member.fsf.org 

Software patents are a threat to innovation in Europe please check: 
	http://www.eurolinux.org/     

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