Re: Patch for fail-back without fresh backup - Mailing list pgsql-hackers

Heikki Linnakangas <hlinnakangas@vmware.com> writes:
> On 14.06.2013 16:08, Tom Lane wrote:
>> Refresh my memory as to why we need to WAL-log hints for checksumming?

> Torn pages:

So it's not that we actually need to log the individual hint bit
changes, it's that we need to WAL-log a full page image on the first
update after a checkpoint, so as to recover from torn-page cases.
Which one are we doing?
        regards, tom lane