Avago LSI SAS 3008 & Intel SSD Timeouts

[Steven Hartland]

Have you tried direct attaching the drives?

On 07/06/2016 18:09, list-news wrote:
> The system is a Twin.  In the first post I mentioned this but I 
> probably wasn't clear.
>
> The twin unit is this one:
> https://www.supermicro.com/products/system/2u/2028/sys-2028tp-decr.cfm
>
> I've used all components from twin node A and B (cpu / memory / 
> mainboard / controller).  I still get the errors.  The backplane was 
> the original thought of concern, and that has been RMA'd and replaced 
> - errors continue.  I've even swapped out power supplies with another 
> identical unit I have here.
>
> In every case the errors continue, until I do this:
> #camcontrol daX -N 1
> (for each drive in the zpool)
>
> Then the errors stop.
>
> The system errors every few minutes while my application is running.  
> Set tags to -N 1, and everything goes quiet.  16 cores at 100% cpu and 
> drives 80% busy @ ~15k IO p/s, for about 5 hours solid before it 
> finishes a batch, no errors are reported with -N set to 1.  If I set 
> tags with -N 255 for each device, errors start again within 5 minutes, 
> and continue every 2-5 minutes, until the batch is finished.
>
> -Kyle
>
>> I would try, if possible, to swap the controller.
>>
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>> Borja.
>>
>>
>
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