On Wed, Aug 19, 2015 at 3:34 PM, Andres Freund <andres@anarazel.de> wrote:
On 2015-08-19 10:49:46 +0200, Magnus Hagander wrote: > What happens "the first time"? Meaning I'm on wal_level=minimal and take a > base backup. Then when the replica first connects 10 minutes later, it > needs WAL back in time, which was logged at wal_level=minimal.
> So you'd need to bump it up whenever a base backup is done -- but then you > can't drop it back down again or your base backup will be useless.
> Or am I missing something?
Nope. Requiring pg_basebackup to automatically create such a 'non-reserving' slot doesn't seem to be too bad to me.
That's doable - but what about manual base backups? And if they don't go away, what about the ones that are generated by the nightly/weekly/hourly/whatever "pg_basebackup -x" ones?
