Refuse upgrades from pre-9.0 clusters
Commit 695b4a113ab added a dependency on retrieving oldestxid from
pg_control, which only exists in 9.0 and onwards, but the check for
8.4 as the oldest version was retained. Since there has been few if
any complaints of 8.4 upgrades not working, fix by setting 9.0 as
the oldest version supported rather than resurrecting 8.4 support.
Backpatch to all supported versions.
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/1973418.1657040382@sss.pgh.pa.us
Backpatch-through: v12
Branch
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REL_13_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/b030697d36d5c40d02f80194589e569eacca5dbf
Modified Files
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doc/src/sgml/ref/pgupgrade.sgml | 2 +-
src/bin/pg_upgrade/check.c | 9 +++++++--
2 files changed, 8 insertions(+), 3 deletions(-)