using dd (or dd_rescue) to salvage array

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On 2012-02-01, Keith Keller <kkeller@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Well, for better or worse, this is now a moot question--I had another
> drive kicked out of the array, I believe prematurely by the controller.

It turns out to be worse--the drive does in fact appear to be failing,
which would be the third failure on this RAID6 array.  I had what might
be a crazy thought--would it be worth the trouble to attempt to use dd
(or dd_rescue, a tool I found that claims to continue on bad blocks) to
write the disk image to another disk, and attempt a rebuild with the new
disk?  Or am I just wasting my time?  (The array is hosting an rsnapshot
backup set, so I can recreate the latest snapshot, but it'll take a
while.  So it'd be nice to save the array if it's possible and not time-
consuming.)

Thanks for your help!

--keith

-- 
kkeller@xxxxxxxxxxxxxxxxxxxxxxxxxx


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