Re: ide-cdrom / atapi burning bug - 2.6.1

[Jens Axboe]

On Sat, Jan 31 2004, Mans Matulewicz wrote:
> On Sat, 2004-01-31 at 11:20, Jens Axboe wrote:
> > On Sat, Jan 31 2004, Mans Matulewicz wrote:
> > > On Sat, 2004-01-31 at 10:34, Jens Axboe wrote:
> > > > On Sat, Jan 31 2004, Mans Matulewicz wrote:
> > > > > Hi,
> > > > > After replacing my 2.4.22  with a 2.6.1 kernel I tried ATAPI cd burning.
> > > > > This totally fails. Most of the CD's are corrupt and my system totally
> > > > > locks up when erasing an cdrw (reset button was the option I needed to
> > > > > reboot my system) . k3b reports cd is completely burned but fails are
> > > > > not identical or totally unreadable. I tried it both with an tainted
> > > > > (nvidia) and an untainted (nv) kernel: same results. With ide-scsi
> > > > > burning in 2.4.x I had no problems. 
> > > > 
> > > > Did you use DMA in 2.4 as well? Does 2.6 work if you turn it off? It's
> > > > most likely an issue with your via adapter.
> > > 
> > > I used DMA in 2.4.
> > > 
> > > I tried without dma on but it still totally locks my system while
> > > erasing an rw.
> > 
> > Do you really have an SMP box, or are you just using an SMP kernel? If
> > you have SMP, it would be interesting to enable the nmi watchdog (if it
> > works on your system).
> > 
> > Are you using preempt?
> 
> Its just an smp kernel. I only have one cpu.
> 
> Preempt is enabled in kernel

Could you try disabling preempt?

-- 
Jens Axboe

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