Greg Oster <oster@cs.usask.ca> writes:

> Since having incorrect parity isn't the "normal mode of operation",
> the question becomes "how expensive is the test to see whether or
> not we need to fix the parity on demand?"  Given all the other stuff
> that goes on, it actually might not be *that* expensive to do...

Don't know anything about how rf works, but can't you just keep an
array of bits, one for each stripe (or whatever the smallest unit is
called), marking if that stripe is clean or not, and then fix the
parity if it's not marked clean.

/Johan