Re: critical bugs in md raid5 and ATA disk failure/recovery modes

[Andi Kleen]

> Well, you could set stripe size to 512B; that way, RAID-5 would be
> *very* slow, but it should have same characteristics as normal disc
> w.r.t. crash. Unrelated data would not be lost, and you'd either get
> old data or new data...

When you lose a disk during recovery you can still lose
unrelated data (any "sibling" in a stripe set because its parity
information is incomplete).  RAID-1 doesn't have this problem though.

-Andi
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