Re: SMART detects pending sectors; take offline?

[Brad Campbell <lists2009@fnarfbargle.com>]

On 03/01/18 20:44, Alexander Shenkin wrote:
> On 12/23/2017 3:14 AM, Brad Campbell wrote:
>> On 21/12/17 19:38, Reindl Harald wrote:
>>>
>>>
>>> Am 21.12.2017 um 12:28 schrieb Alexander Shenkin:
>>>> Hi all,
>>>>
>>>> Reporting back after changing the hangcheck timer to 180 secs and 
>>>> re-running checkarray.  I got a number of rebuild events (see 
>>>> syslog excerpts below and attached), and I see no signs of the 
>>>> hangcheck issue in dmesg like I did last time.
>>>>
>>>> I'm still getting the SMART OfflineUncorrectableSector and 
>>>> CurrentPendingSector errors, however.  Should those go away if the 
>>>> rewrites were correctly carried out by the drive? Any thoughts on 
>>>> next steps to verify everything is ok?
>>>
>>> OfflineUncorrectableSector unlikely can go away
>>>
>>> CurrentPendingSector
>>> https://kb.acronis.com/content/9133
>>
>> If they've been re-written (so are no longer pending) then a SMART 
>> long or possibly offline test will make them go away. I use SMART 
>> long myself.
>>
>
> Thanks Brad.  I'm running a long test now, but I believe I have the 
> system set up to run long tests regularly, and the issue hasn't been 
> fixed.  Furthermore, strangely, the reallocated sector count still 
> sits at 0 (see below).  If these errors had been properly handled by 
> the drive, shouldn't Reallocated_Sector_Ct sit at least at 8?

Nope. Your pending is still at 8, so you've got bad sectors in an area 
of the drive that hasn't been dealt with. What is "interesting" is that 
your SMART test results don't list the LBA of the first failure. 
Disappointing behaviour on the part of the disk. They are within the 1st 
10% of the drive however, so it wouldn't surprise me if they were in an 
unused portion of the RAID superblock area.


Regards,
-- 

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