Re: System freezes with kernel >2.6.19 - sata_nv [added crash info kern 2.6.21.1]

[Stefan <gentoopower@yahoo.de>]

Tejun Heo wrote:
> Robert Hancock wrote:
>   
>> Stefan wrote:
>>     
>>> Okay, I had time to set this up. I'm attaching the log messages I got
>>> via netconsole.
>>>
>>> I tested about 20h with adma disabled, the crash won't occur.
>>>
>>> If I remove
>>>
>>> sata_nv.adma=0
>>>
>>> from boot options again it doesn't take long until my machine locks up.
>>>
>>> [Attached dmesg output with 2.6.21.1 kernel + crash info I got via
>>> netconsole]
>>>
>>> I hope this is useful to you guys.
>>>       
>> It looks like you've got SError bits set from the controller, 0x200000
>> means link layer CRC error (btw, we really should be decoding that error
>> and printing it in human readable form rather than making people pore
>> through the SATA spec and count bits).
>>     
>
> Hmmm... Maybe, but most of the bits are nearly meaningless to end users
> anyway.
>
>   
>> First thing you should try is replacing the SATA cable to that drive.
>>     
>
> Yeap, please apply some hardware debugging techniques - replacing /
> reseating SATA cables and connecting it to different power connector.
> But it's disturbing to see machine lock up even if CRC error occurs.
> sata_nv non-adma interface locks the whole machine up too after certain
> error conditions but I thought adma was saner than that.  I hope we can
> work around this somehow.
>
> Thanks.
>
>   
Hi folks, got some news:

I replaced cables, which didn't change anything. My PSU is strong enough
to take a lot more, so I don't think it could be a power problem.
Therefore I replaced the SAMSUNG HD401LJ with  ST3160812AS.
With the seagate attached I don't get the crash. So this may be a
problem in combination with the HD401LJ+ NFORCE4 + ADMA.

--Stefan