In pg_upgrade docs, clarify that link mode uses "hard" links.
Backpatch to 9.1 and 9.0.
Branch------REL9_0_STABLE
Details-------http://git.postgresql.org/pg/commitdiff/3a2906545f839aaf3a49f08a6f8d2cb1f841168f
Modified Files--------------doc/src/sgml/pgupgrade.sgml | 20 ++++++++++++--------1 files changed, 12 insertions(+), 8 deletions(-)
