Re: Block-level CRC checks

* Greg Stark:

> Wal logged changes are safe because of full_page_writes. Hint bits are
> safe because either the old or the new value will be on disk and we
> don't care which.

Is this really true with all disks?  IBM's DTLA disks didn't behave
that way (an interrupted write could zero a sector), and I think the
text book algorithms don't assume this behavior, either.

--
Florian Weimer                <fweimer@bfk.de>
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