Re: [Freeipmi-users] Decoding ram errors on supermicro

[Albert Chu]

Hi Tom,

Thanks for the pointer to ipmiutil's code.  I assume you found this
comment:

---
      /* ver 2 method: 2A 80 = P1_DIMMB1 */                                     
                                                       
          /* SuperMicro says:                                                   
                                                       
           *  pair: %c (data2 >> 4) + 0x40 + (data3 & 0x3) * 3, (='B')          
                                                       
           *  dimm: %c (data2 & 0xf) + 0x27,                                    
                                                       
           *  cpu:  %x (data3 & 0x03) + 1);                                     
                                                       
           */                       
---

I can definitely add it to my todo list.

Would you mind writing up an issue on github here?

https://github.com/chu11/freeipmi-mirror

Al

On Mon, 2018-12-03 at 17:55 +0100, Tom Hetmer wrote:
> Hi, 
> 
> it'd be good if freeipmi supported decoding the supermicro ECC
> errors.
> 
> 
> Manufacturer: Supermicro
> Product Name: X10DRH LN4
> eg.
> freeipmi
> 1,Dec-01-2018,06:37:53,Sensor #0,Memory,Critical,Uncorrectable memory
> error ; OEM Event Data2 code = 3Ah ; OEM Event Data3 code = 81h
> 
> 
> web interface
> 1 | 12/01/2018 | 06:37:53 | Memory | Uncorrectable ECC
> (@DIMMG1(CPU2)) | Asserted
> 
> 
> something like this worked for me (stolen from ipmiutil)
> 
> 
> $cpu = ($data3 & 0x03) + 1;
> 
> 
> $NPAIRS = 26;
> $rgpairs = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
> 
> 
> $bdata = "0x".$data2.$data3;
> $bdata = hexdec($bdata);
> $pair = (($bdata & 0xF0) >> 4) - 1;
> 
> 
> if ($pair < 0) $pair = 0;
> if ($pair > $NPAIRS) $pair = $NPAIRS - 1;
> 
> 
> $pair = $rgpairs[$pair - 1];
> 
> 
> $dimm = $bdata & 0x0F;
> 
> 
> $dimm may be incorrect as the original code decrements 9, but on that
> board it was wrong so i changed it to get the right result - we'll
> see if it keeps getting the right values.
> 
> Best,
> Tom Hetmer
> 
> 
> CDN77 Operations
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> 
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-- 
Albert Chu
address@hidden
Computer Scientist
High Performance Systems Division
Lawrence Livermore National Laboratory