Hello,
I've been wondering how pgsql goes about guaranteeing data
integrity in the face of soft failures. In particular
whether it uses an alternative to the double root block
technique - which is writing, as a final indication of the
validity of new log records, to alternate disk blocks at
Tom Lane wrote:
> Christopher Quinn <[EMAIL PROTECTED]> writes:
>
>
> The WAL log uses per-record CRCs plus sequence numbers (both per-record
> and per-page) as a way of determining where valid information stops.
> I don't see any need for relying on a "root
