2011/2/14 compdoc compdoc@hotrodpc.com:
end_request: I/O error, dev sda, sector 451792231
You should run: smartctl -a /dev/sda
Look for something like this line:
Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
If that last value is greater than 0, replace the drive...
Value is 0, on both drives.
-- Eero