FreeBSD-6 amr and ahd trouble

[Scott Long]

Joerg Pulz wrote:
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> 
> On Fri, 2 Dec 2005, Michael Rogato wrote:
> 
>> I know I'm a couple weeks late, but I've been having the same problem 
>> with my 300-8x. It seems that after a seemingly random period of time 
>> on my dual opteron box, the system just hangs. It did kernel panic 
>> once when I was taking down the geom array. Originally I thought it 
>> might have something to do with GEOM, but since it's also happened 
>> outside of a GEOM array, I'm kind of at a loss.
>>
>> Have you managed to find anything out about what exactly is causing 
>> the problem? I don't get any kind of error messages, so I haven't had 
>> much luck in tracking it down.
> 
> 
> With help from Scott Long and John Baldwin, i have my system up and 
> running again without problems.
> You should build your own kernel which should have
> options     MUTEX_NOINLINE
> in the kernel configuration. With this option my system is working.
> 
> regards
> Joerg
> 

I think that the root problem is actually memory corruption from the
amr-cam module.  I haven't been able to nail it down further, though.
However, this module is entirely optional and isn't used for anything
in the base system (it's only useful if you hook up a cdrom or tape
drive to your RAID card), so I've disabled it CVS HEAD and RELENG_6
until I can fix it for good.

Scott