pg_upgrade doc: mention that replication slots must be recreated

Reported-by: Nikhil Shetty
Discussion: https://postgr.es/m/CAFpL5Vxastip0Jei-K-=7cKXTg=5sahSe5g=om=x68NOX8+PUA@mail.gmail.com

Backpatch-through: 10

diff --git a/doc/src/sgml/ref/pgupgrade.sgml b/doc/src/sgml/ref/pgupgrade.sgml
index 01a212890ea7e91759ae7ddd5dffb8514ac1121e..26de7cf19a722d0d43eb1f57f23e6288e1e80317 100644 (file)
--- a/doc/src/sgml/ref/pgupgrade.sgml
+++ b/doc/src/sgml/ref/pgupgrade.sgml
@@ -603,7 +603,8 @@ rsync --archive --delete --hard-links --size-only --no-inc-recursive /vol1/pg_tb
        Configure the servers for log shipping.  (You do not need to run
        pg_start_backup() and pg_stop_backup()
        or take a file system backup as the standbys are still synchronized
-       with the primary.)
+       with the primary.)  Replication slots are not copied and must
+       be recreated.