Re: Getting rid of pending sectors

Try badblocks with the non destructive write mode test (-n see "man
badblocks").  That way the drive should remap the sectors after the write
process and hopefully your data will be intact afterwords.


*...Bob*
On 10/22/2016 02:03 PM, Orsiris de Jong wrote:
>
> Hello,
>
>  
>
> I own a small private NAS with 2x WD RE4 4TB drives.
>
> One of the drives recently got a number of current pending sectors :
>
>  
>
> 197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always      
> -       142
>
> 198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline     
> -       142
>
>  
>
> The smart long self test suceeds.
>
> IÂ’ve tried to force the firmware to reallocate the sectors by reading them.
>
> So far IÂ’ve tried :
>
> dd if=/dev/sdb of=/dev/null bs=4096
>
> badblocks -b 4096 -c 8 -sv -o /root/badblocks.sdb /dev/sdb
>
>  
>
> Neither of both commands changed anything, and the badblocks utility reports 0
> bad blocks.
>
> Usually the self test locates at least the bad sectors so I can write to the
> sector and force reallocation, but nothing here.
>
>  
>
> IÂ’m used to not trust a drive if it gets more than 10 bad sectors, but as itÂ’s
> a private server, IÂ’m pretty unwilling to spend 300$ into new 4TB RE4 / Gold
> drives.
>
>  
>
> Any suggestions ?
>
>  
>
> Regards,
>
> Ozy.
>
>
>
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