The patch has been significantly updated.

1. Added the --pg-commit-ts command line key for pg_upgrade.

Migration of the pg_commit_ts directory will be performed only if the user explicitly wishes.

2. The roident values are being transferred from pg_replication_origin to a new cluster to resolve conflict messages {UPDATE|DELETE}_ORIGIN_DIFFERS.

 

During testing, it turned out that the replication sources created by the pg_replication_origin_create('no_link_sub_4') functions are not migrated to the new cluster. This is probably a bug.

 

The principle of operation: A query to the old cluster generates SQL commands for roident adjustments, which are then executed in the new cluster.