[smartmontools-support] smartctl fails but badblocks succeeds

[Thane K. Sherrington]

I would consider it a bad disk.   I consider the internal self-test of 
any drive to trump any secondary test.

Thane K. Sherrington

Computer Connection, Ltd. ...taking the mystery out of computers since 1982.
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On 25-Jun.-2022 10:38 a.m., Alex wrote:
> Hi all,
>
> I hoped I could reply to my question from some time ago with more 
> info. Here is a link to the output from smartctl for two drives I 
> think are failing. Would someone help me confirm?
>
> The first one doesn't have all that many hours on it.
>
> 1.
>     Model Family: Western Digital Caviar Black
> 2.
>     Device Model: WDC WD1502FAEX-007BA0
>
> 1.
>     Num Test_Description Status Remaining LifeTime(hours)
>     LBA_of_first_error
> 2.
>     # 1 Extended offline Completed: read failure 80% 25420 556876652
>
> https://pastebin.com/P2uvFxfa
>
> I've also tried to run badblocks on the area around that bad sector, 
> and it's succeeded.
>
> 1.
>     Model Family: Western Digital Caviar Black
> 2.
>     Device Model: WDC WD1002FAEX-00Z3A0
> 3.
>     Num Test_Description Status Remaining LifeTime(hours)
>     LBA_of_first_error
> 4.
>     # 1 Short offline Completed: read failure 90% 57452 642360
>
> https://pastebin.com/PQUfS222
>
> Any ideas greatly appreciated.
> Thanks,
> Alex
>
>
> On Sun, Jun 12, 2022 at 5:29 PM Alex <mysqlstudent at gmail.com> wrote:
>
>     Hi,
>     I have an older WD1502FAEX 1.5TB disk that fails a smartctl short
>     and long test at virtually the same place on the disk with a read
>     error. However, running badblocks over the same place on the disk
>     where smartctl fails has no problem, even after multiple
>     read/write passes.
>
>     Which test do I believe? Is this a reliable disk?
>
>     If they're just read errors, isn't there some mechanism to
>     relocate those bad sectors or just mark them as unusable and move on?
>
>     This disk is being tested on another system or I otherwise would
>     have provided more actual output here. Please let me know if
>     there's something specific I can provide to help determine how I
>     should proceed.
>
>
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