Re: Oops on boot with TCQ enabled (VIA KT133A)

[Vojtech Pavlik <vojtech@suse.cz>]

On Sun, Oct 20, 2002 at 02:38:34AM +0200, Jens Axboe wrote:
> On Sat, Oct 19 2002, Vojtech Pavlik wrote:
> > On Sat, Oct 19, 2002 at 10:24:03PM +0200, Vojtech Pavlik wrote:
> > 
> > > > It's not an oops, and it's not causes by TCQ either. The above is simply
> > > > a reminder to fix the ide init sequence, because it's probe sequence
> > > > tries to use drive->disk before it has been set up. That is worked
> > > > around, but stack is dumped for good measure. So you can feel
> > > > comfortable using 2.5.44 regardless.
> > > > 
> > > > But I'm curious about TCQ on your system, since another VIA user
> > > > reported problems. Does it appear to work for you?
> > > 
> > > It definitely works on my VIA just fine.
> > 
> > Famous last words. I tried to play with the /proc using_tcq setting and
> > got a filesystem corruption immediately.
> 
> There _may_ be issues with changing depth on the fly. So if you could
> just test without fiddling with changing depths that would be great.

Ok. No changes in /proc using_tcq after boot, assuming it's enabled
automatically (checked that in kernel config0, it works perfectly fine.

-- 
Vojtech Pavlik
SuSE Labs