http://bugzilla.suse.com/show_bug.cgi?id=353804
Stanislav Brabec changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|CONFIRMED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #21 from Stanislav Brabec ---
The bug is opened for years.
As the smartctl only tries to interpret data from hardware, we cannot do much
with the output.
Exact meaning of the items is undocumented.
I last years I did some experiments that bring a bit of light to these numbers:
If S.M.A.R.T. detects weak sector (either while reading or during S.M.A.R.T.
scans), it attempts to relocate it.
Relocation requires reading of the weak sector, writing to another position and
remapping it into a raising defect table. If this succeeds, firmware only
increments statistics of reallocated sectors.
If reading fails, drive cannot relocate it, and the error becomes uncorrectable
(i. e. data loss). It is logged into error log and increments statistics of
pending sectors. The overall status changes to FAILED.
But you can still fix such drive by overwriting such sectors. In such moment,
the error starts to be a correctable error, and firmware can complete the
process of relocation. Statistics are updated and the overall status changes
back to PASSED.
User has no access to the defect list.
But for Seagate drives, there is a chance to low level access: Four separate
pins on the drive back contains service serial port. The command set allows to
manipulate with defect list, change map of reserve sectors, reset S.M.A.R.T.,
manipulate with firmware etc. And also completelly kill the drive.
References:
http://forum.hddguru.com/viewtopic.php?t=11926&start=
http://fillwithcoolblogname.blogspot.com/2011/02/fixing-seagate-720011-bsy-0...
http://forum.hddguru.com/viewtopic.php?t=6411&start=
http://elabz.com/forums/electronics-repairs/list-of-seagate-firmware-termina...
http://files.hddguru.com/download/Datasheets/Seagate/Seagate%20Diagnostic%20...
http://www.msfn.org/board/topic/128807-the-solution-for-seagate-720011-hdds/
http://forum.javaxtreme.com/threads/103-Seagate-Diagnostic-Command-List
(currently dead)
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