From mboxrd@z Thu Jan  1 00:00:00 1970
From: Phil Turmel <philip@turmel.org>
Subject: Re: SMART detects pending sectors; take offline?
Date: Wed, 3 Jan 2018 10:53:00 -0500
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To: Alexander Shenkin <al@shenkin.org>, Brad Campbell <lists2009@fnarfbargle.com>, Reindl Harald <h.reindl@thelounge.net>, Edward Kuns <eddie.kuns@gmail.com>, Mark Knecht <markknecht@gmail.com>
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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.)

Phil