Ominous smartd messages ....

[Ken Moffat]

On Wed, Aug 03, 2016 at 02:25:55PM -0453, William A. Mahaffey III wrote:
> On 08/03/16 11:45, Ken Moffat wrote:
> > > 
> > I agree with Matthew, and since your custom script seemed to ignore
> > all the items which I regard as relevant, after the long test has
> > finished run smartctl -a on that drive and look at things like
> > Reallocated Sector Count and Pending (if that is still present).
> > plus any other error fields.
> > 
> > ĸen
> 
> 
> OK:
> 

(pruning, and unwrapping)
> Vendor Specific SMART Attributes with Thresholds:
> ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE UPDATED > WHEN_FAILED RAW_VALUE
>   5 Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail Always    -       0
> 197 Current_Pending_Sector  0x0022   100   100   000    Old_age Always     -       8
> 198 Offline_Uncorrectable   0x0008   100   100   000    Old_age Offline    -       0
> 
At this point it hasn't managed to read 8 sectors, I assume it only
reallocates afteri either succeding to read or giving up.

I had this once on a RAID-1, I swapped the drive out as soon as it
was convenient, and meanwhile the other drive in the mirror provided
the data.  Before that, on daily tests the position of the first
failure did change once, so I think mine managed to read one of the
failing sectors.

A couple of years ago, 1TB spinning drives were the smallest
commonly available from several retail suppliers - and not
particularly reliable.  I think I've had two 1TB drives (different
brands) fail in the last 2 years.  So, as with all drives, expect
failures.

ĸen
-- 
`I shall take my mountains', said Lu-Tze. `The climate will be good
for them.'     -- Small Gods