pg_upgrade: document use of rsync for slave upgrades

Bruce Momjian <bruce@momjian.us>

Commit: 417f78a5178815d8c10f86b1561c88c45c53c2d2
Author: Bruce Momjian <bruce@momjian.us>
Date: 2015-03-18T19:49:29Z
Releases: 9.5.0
pg_upgrade: document use of rsync for slave upgrades

Also document that rsync has one-second granularity for file
change comparisons.

Report by Stephen Frost

Files

PathChange+/−
doc/src/sgml/backup.sgml modified +4 −2
doc/src/sgml/pgupgrade.sgml modified +148 −11