Tony,
Make sure that your 3ware controllers are configured so that if they find
an unreadable sector, they immediately write back to that sector (using
data from the redundant disks) to force the unreadable sector to
reallocate.
I don't remember where that particular configuration switch lives, but
others on this list can probably remind us.
Cheers,
Bruce
On Wed, 6 Sep 2006, Tony Ladd
wrote:
> I am getting a number of syslog errors generated by smartd:
>
> Sep 5 18:09:44 cec smartd[2412]: Device: /dev/twa0 [3ware_disk_00], 1
> Offline uncorrectable sectors
> Sep 5 18:09:44 cec smartd[2412]: Device: /dev/twa0 [3ware_disk_01], 1
> Currently unreadable (pending) sectors
> Sep 5 18:09:44 cec smartd[2412]: Device: /dev/twa0 [3ware_disk_01], 1
> Offline uncorrectable sectors
> Sep 5 18:09:44 cec smartd[2412]: Device: /dev/twa0 [3ware_disk_04], 1
> Currently unreadable (pending) sectors
> Sep 5 18:09:44 cec smartd[2412]: Device: /dev/twa0 [3ware_disk_04], 1
> Offline uncorrectable sectors
>
> When I check the status with smartctl -d 3ware,x -a /dev/twa0 it says No
> Errors Logged.
>
> 1) I am surprised the results from the smartctl and smartd apparently do not
> agree
> 2) Smartd does not specify the bad sector. Is this a "real" disk error?
> 3) After getting these error messages every 30 mins for about 12 hours at
> about 3 am this morning the Offline errors disappeared from the logs. Now
> all I get is:
>
> Sep 6 09:18:16 cec smartd[15314]: Device: /dev/twa0 [3ware_disk_01], 1
> Currently unreadable (pending) sectors
> Sep 6 09:18:16 cec smartd[15314]: Device: /dev/twa0 [3ware_disk_04], 1
> Currently unreadable (pending) sectors.
>
> The hardware is a 3ware 9550-SX controller and 8X WDC 2500YS drives. The
> disks and controller are brand new. The m'board is a S'Micro P3TDLE.
>
> Tony
>
> -------------------------------
> Tony Ladd
> Professor, Chemical Engineering
> University of Florida
> PO Box 116005
> Gainesville, FL 32611-6005
>
> Tel: 352-392-6509
> FAX: 352-392-9513
> Email: tl...@ch...
> Web: http://ladd.che.ufl.edu
>
>
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