Обсуждение: pgsql: In pg_upgrade docs, clarify that link mode uses "hard" links.

In pg_upgrade docs, clarify that link mode uses "hard" links.

Backpatch to 9.1 and 9.0.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/194e6ee74b0282d0a7b8d0c815ea7204fc23cec9

Modified Files
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doc/src/sgml/pgupgrade.sgml |   20 ++++++++++++--------
1 files changed, 12 insertions(+), 8 deletions(-)