docs: improve pg_upgrade standby instructions

Bruce Momjian <bruce@momjian.us>

Commit: aaa4faa7a00cb85322e570f2d148a51b95b847c4
Author: Bruce Momjian <bruce@momjian.us>
Date: 2017-09-13T13:11:28Z
Releases: 10.0
docs:  improve pg_upgrade standby instructions

This makes it clear that pg_upgrade standby upgrade instructions should
only be used in link mode, adds examples, and explains how rsync works
with links.

Reported-by: Andreas Joseph Krogh

Discussion: https://postgr.es/m/VisenaEmail.6c.c0e592c5af4ef0a2.15e785dcb61@tc7-visena

Backpatch-through: 9.5

Files

PathChange+/−
doc/src/sgml/ref/pgupgrade.sgml modified +41 −23

Documentation touched