S.M.A.R.T. reports bad sectors, but badblocks no errors?
On 7/2/19 2:31 PM, Grant Taylor wrote:
What should I make of a drive for which S.M.A.R.T. reports 8 bad
sectors (a single 4K block, I assume), but badblocks reports no errors
on a read-write test?
I think it depends on the drive is.
I suspect that any drive that has S.M.A.R.T. also has spare sectors that
aren't visible to the OS.
As such, it's entirely possible that the 8 sectors are indeed bad and
have been swapped out with spares that are good.
Running a bad block check from the OS (outside of the drive & integrated
controller) on such a will likely not see any problem(s).
Now, after just one more run of badblocks, S.M.A.R.T. reports no errors.
So I assume that now a spare block is in use.
Perce
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