docs: clarify pg_upgrade's recovery behavior

Bruce Momjian <bruce@momjian.us>

Commit: 58507a83c8bd164bb693c5bf447aacb7a4378126
Author: Bruce Momjian <bruce@momjian.us>
Date: 2019-04-17T22:01:02Z
Releases: 9.6.13
docs: clarify pg_upgrade's recovery behavior

The previous paragraph trying to explain --check, --link, and no --link
modes and the various points of failure was too complex.  Instead, use
bullet lists and sublists.

Reported-by: Daniel Gustafsson

Discussion: https://postgr.es/m/qtqiv7hI87s_Xvz5ZXHCaH-1-_AZGpIDJowzlRjF3-AbCr3RhSNydM_JCuJ8DE4WZozrtxhIWmyYTbv0syKyfGB6cYMQitp9yN-NZMm-oAo=@yesql.se

Backpatch-through: 9.4

Files

PathChange+/−
doc/src/sgml/ref/pgupgrade.sgml modified +36 −16

Documentation touched