Re: SMART Self-test: Reserved (0x80)

Andreas Mohr wrote:
> Hi,
>
> On Sun, Sep 14, 2014 at 10:26:27PM +0000, [email protected] wrote:
>
>> Hello
>> Could you explain me what does it mean:
>>
>> SMART Self-test log structure revision number 0
>> Warning: ATA Specification requires self-test log structure revision number = 1
>> Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
>> # 1  Reserved (0x80)     Aborted by host               60%     42798         -
>> # 2  Short offline       Completed without error       00%     42787         -
>> # 3  Short offline       Aborted by host               00%     42763         -
>>
>> I'm interested about #1 test. what does it mean: Reserved (0x80) ?
>> The system was under heavy load, so i had to abort the test.
>
> And especially: which device was it?

Bogus test types in self-test logs are not common for various SSDs 
(Intel, ...)


>
> For reference, atacmds.cpp ataPrintSmartSelfTestEntry() says:
>
>
>    std::string msgtest;
>    switch (test_type) {
>      case 0x00: msgtest = "Offline";            break;
>      case 0x01: msgtest = "Short offline";      break;
>      case 0x02: msgtest = "Extended offline";   break;
>      case 0x03: msgtest = "Conveyance offline"; break;
>      case 0x04: msgtest = "Selective offline";  break;
>      case 0x7f: msgtest = "Abort offline test"; break;
>      case 0x81: msgtest = "Short captive";      break;
>      case 0x82: msgtest = "Extended captive";   break;
>      case 0x83: msgtest = "Conveyance captive"; break;
>      case 0x84: msgtest = "Selective captive";  break;
>      default:
>        if ((0x40 <= test_type && test_type <= 0x7e) || 0x90 <= test_type)
>          msgtest = strprintf("Vendor (0x%02x)", test_type);
>        else
>          msgtest = strprintf("Reserved (0x%02x)", test_type);
>    }
>
> Or perhaps 0x80 indeed has changed from "reserved" to a specific meaning

Even recent ACS-4 drafts define 0x80 as "Reserved". Bit 7 normally marks 
captive tests, but a captive version of the "Offline" test does not exist.

I presume this a harmless firmware bug.

Thanks,
Christian


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