Hello!
Found out that test for pg_upgrade (test.sh for 11-14 and
002_pg_upgrade.pl for 15+) doesn't work from 10th versions to higher
ones due to incompatible options for initdb and default PGDATA permissions.
Here are the patches that may solve this problem.
Would be glad to your comments and concerns.
With best regards,
--
Anton A. Melnikov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company