On Thu, Jun 18, 2020 at 4:05 AM Michael Paquier <michael@paquier.xyz> wrote:
On Wed, Jun 17, 2020 at 09:00:23PM +0000, PG Bug reporting form wrote: > I am facing error during upgrade from postgresql -11 to 12. > can you please suggest what is solution.
As the error message is telling, you need to make the WAL segment sizes of the old and new clusters match. This can be defined at server initialization time using initdb with a default of 16MB, so that's not a bug from us, but something you need to take care of within your upgrade process.
Since wal-segsize is changeable with pg_resetwal since v11, and pg_upgrade is already calling pg_resetwal, shouldn't pg_upgrade ideally just deal with this situation automatically by allowing the upgrade to also change this value, rather than forcing the user to make them match manually?
