Re: SMART detects pending sectors; take offline?

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On 01/03/2018 10:59 AM, Alexander Shenkin wrote:
> On 1/3/2018 3:53 PM, Phil Turmel wrote:
>> On 01/03/2018 08:50 AM, Alexander Shenkin wrote:
>>> On 1/3/2018 1:26 PM, Brad Campbell wrote:
>>
>>>> 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.
>>>
>>> Thanks Brad.  So, to theoretically get these sectors remapped so I don't
>>> keep getting errors, I would have to somehow try to write to those
>>> sectors.  That's tough given that the LBA's aren't reported as you
>>> mention.  Perhaps my best course of action then is to:
>>
>> No, just use dd to read that device -- it'll bail out with read error
>> when it hits the trouble spot, which will report the affected sector.
>> Then you can rewrite it with the appropriate seek= value.  (Assuming it
>> really is in an unused part of the member device.)
> 
> Thanks Phil.  So, just: dd if=/dev/sda of=/dev/null bs=512

Yup. (-:

Phil
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