[CentOS] HDD badblocks

[Gordon Messmer]

On 01/18/2016 07:47 AM, Matt Garman wrote:
> Another possibility is that there is a cable that has
> vibrated into a marginal state.

That wouldn't explain the SMART data reporting pending sectors.

According to spec, a drive may not reallocate sectors after a read error 
if it's later able to read the sector successfully.  That's probably 
what happened here.

Drives are consumable items in computing.  They have to be replaced 
eventually.  Read errors are often an early sign of failure.  The drive 
may continue to work for a while before it fails.  The only question is: 
is the value of whatever amount of time it has left greater than the 
cost of replacing it?