On Mon, 6 Nov 2006, dean gaudet wrote:
it should be only once a month... and it's just a "check" -- it reads everything and corrects errors.
If you have a recent enough kernel, yes. I used 2.6.15 and it would actually rebuild, I think it was 2.6.16 that does correct "read and compare".
i think it's a great thing actually... way more useful than smart long self-tests because md can reconstruct read errors immediately -- before you lose redundancy in that stripe.
Quite, I highly recommend doing this on all RAID sets including hardware ones (3ware for instance) once a week.
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