> Date: Tue, 15 Mar 2016 17:21:50 +0100
> Subject: Re: how to switch old replication Master to new Standby after
> promoting old Standby - pg_rewind log file missing
> From: [email protected]
> To: [email protected]
> CC: [email protected]; [email protected];
> [email protected]
>
> On Tue, Mar 15, 2016 at 5:14 PM, John Lumby <[email protected]> wrote:
>> But my question is, given that the divergence point was 2B000060,
>> why is it looking for a file earlier than that?
>
> (please do not top-post, this is annoying as it breaks the logic of the
> thread)
sorry, ok
> pg_rewind begins scanning WAL records not at the point where WAL
> forked, but from the previous checkpoint record before WAL forked.
In that case, I wonder if it would be useful to extend the replication_slots
concept
to be able to specify to retain all WALs back to
"previous checkpoint before most recent timeline switch"
in order to guarantee that pg_rewind shall always be able to find the ones it
needs
in source without requiring archiving and archive-retrieval?
> --
> Michael
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