> On 27 Oct 2023, at 20:34, Paul Förster <paul.foerster@xxxxxxxxx> wrote: > a) why isn't it possible to enable checksumming while a database cluster is up? It is surprisingly complicated to enable checksums on a live cluster, a patch was submitted a while back but ultimately never made it into postgres. The below threads may shine some light on the problem: https://www.postgresql.org/message-id/flat/CABUevEx8KWhZE_XkZQpzEkZypZmBp3GbM9W90JLp%3D-7OJWBbcg%40mail.gmail.com https://www.postgresql.org/message-id/flat/560A2239-5DE2-4B9C-92BC-878C6822F47C%40yesql.se#10b665b2193445a3d7f24be7917a952c -- Daniel Gustafsson