[smartmontools-support] self-test unknown failure

[Christian Franke]

Ben Wood wrote:
> I have a brand new 8GB Toshiba N300 disk that was used as a 
> replacement for a ZFS array.
>
> The disk had some seek errors as it was resilvering, but those errors 
> have cleared up. Self-tests are failing with "Completed: unknown 
> failure". I don't see any attributes that are undefined, so I'm not 
> sure how to clear the error on this disk. My OS keeps nagging me that 
> the disk is bad, but everything I can see says it's actually OK.
>

A similar issue with same "Self-test execution status" was reported for 
a "TOSHIBA MN08ACA14T" with firmware "0601":
https://www.smartmontools.org/ticket/1510

This is likely a disk firmware bug.


> Is there a way to get a passing self-test, or clear the error on the 
> disk so it doesn't nag me anymore?

Possibly not - except via new firmware which fixes the bug.

This disk may support ATA Pending Defects log, but this is not included 
in 'smartctl -a' as this only prints legacy SMART info. Try 'smartctl 
-x' or 'smartctl -l defects' to see possible bad LBAs.

Thanks,
Christian


>
> # smartctl -q noserial -a /dev/sdf
> smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.4.143-1-pve] (local build)
> Copyright (C) 2002-20, Bruce Allen, Christian Franke, 
> www.smartmontools.org <http://www.smartmontools.org>
>
> === START OF INFORMATION SECTION ===
> Device Model:     TOSHIBA HDWG180
> Firmware Version: 0603
> ...
> Self-test execution status:      (  73) The previous self-test 
> completed having
>                                         a test element that failed and 
> the test
>                                         element that failed is not known.
> ...
> SMART Self-test log structure revision number 1
> Num  Test_Description    Status                  Remaining 
>  LifeTime(hours)  LBA_of_first_error
> # 1  Extended offline    Completed: unknown failure    90%     217     
>     0
> # 2  Short offline       Completed: unknown failure    90%     125     
>     0