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Refuse upgrades from pre-9.0 clusters

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Commit 695b4a113a 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
This commit is contained in:
Daniel Gustafsson
2024-05-17 14:24:27 +02:00
parent 9489f3c6e8
commit b030697d36
2 changed files with 8 additions and 3 deletions
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doc/src/sgml/ref/pgupgrade.sgml
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@ -67,7 +67,7 @@ PostgreSQL documentation
</para>
<para>
pg_upgrade supports upgrades from 8.4.X and later to the current
pg_upgrade supports upgrades from 9.0.X and later to the current
major release of <productname>PostgreSQL</productname>, including snapshot and beta releases.
</para>
</refsect1>