Re: MD/RAID: what's wrong with sector 1953519935?

From: Mark Lord
Date: Wed Aug 26 2009 - 20:07:15 EST

Andrei Tanas wrote:
On Wed, 26 Aug 2009 11:39:38 -0400, Ric Wheeler <rwheeler@xxxxxxxxxx>
On 08/26/2009 10:46 AM, Andrei Tanas wrote:
On Wed, 26 Aug 2009 06:34:14 -0400, Ric Wheeler<rwheeler@xxxxxxxxxx>
On 08/25/2009 11:45 PM, Andrei Tanas wrote:
I would suggest that Andrei might try to write and clear the IO
at that
offset. You can use Mark Lord's hdparm to clear a specific sector
[90318.370625] end_request: I/O error, dev sdb, sector 1953519935

I suggest you try this:

hdparm --read-sector 1953519935 /dev/sdb

If that succeeds, then the sector is good at the drive.
But *If* it fails, then you could check the syslog to ensure
that it didn't fail for some weird reason, and then *fix* it:

hdparm --write-sector 1953519935 /dev/sdb

This is very different from how 'dd' does writes.

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