Apparently conflicting smartctl output
cswiger at mac.com
Thu Jan 5 19:56:54 UTC 2012
On Jan 5, 2012, at 11:42 AM, Janos Dohanics wrote:
> - Do I have a bad hard drive (apparently, I do...)
> - Why are there "No Errors Logged" by smartctl?
You've probably got a bad sector on the drive, anyway.
The SMART error log is a funny thing governed by various drive's firmware which have quirks. Some of 'em only have a self-test log, but don't store the error log at all; others will only record an error after they've given up trying to remap a failing sector. You snipped too much of the smartctl output to see what the "Error logging capability" section says-- the full output would be more informative.
You almost certainly want to do a full read-scan of the drive via "dd if=/dev/ad4 of=/dev/null bs=64k", which will help the drive notice any other failing sectors. Repeat dd if it aborts early with an error (or add "conv=noerror", maybe).
More information about the freebsd-questions