Just to check that they actually work.
pg_upgrade -d "${PGDATA}.old" -D "${PGDATA}" -b "$oldbindir" -B "$bindir"
pg_ctl start -l "$logdir/postmaster2.log" -w
+sh ./analyze_new_cluster.sh
pg_dumpall >"$temp_root"/dump2.sql || pg_dumpall2_status=$?
pg_ctl -m fast stop
if [ -n "$pg_dumpall2_status" ]; then
exit 1
fi
+sh ./delete_old_cluster.sh
+
if diff -q "$temp_root"/dump1.sql "$temp_root"/dump2.sql; then
echo PASSED
exit 0