Torrey McMahon wrote:
Richard Elling - PAE wrote:
Non-recoverable reads may not represent permanent failures. In the case
of a RAID array, the data should be reconstructed and a rewrite + verify
attempted with the possibility of sparing the sector. ZFS can
reconstruct the data and relocate the block.
True but if you're using a HW raid array or some sort of protection
within a zpool then you're already protected to a large degree. I'm
looking for the amount of cases where you get a permanent unrecoverable
read error and yet can recover because you've got a ditto block someplace.
Agree. Non-recoverable reads are largely a JBOD problem.
-- richard
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