The reproductive-health page promised that deleting all data or the
account erases at once. Both wait for the grace window now, the nightly
dumps keep a record until they age out, and the old pgdata volume is a
full copy until it is removed; the page says so and how to make deletion
final. The README, the getting-started note on majors, the move guide and
the Unraid and Portainer templates catch up with Postgres 18, the backups
volume and the recovery kit. The demo seed's spread bound leaves room for
the seed's own one-in-150 spread.
Going back to Postgres 16 after a move that stopped half-way left the
moving marker, and the next start emptied the live 16 database and
started a second server on its data directory. db-upgrade now waits for
the database service and does nothing unless it runs Postgres 18.
Using 16 again after a finished move and then updating started the app
on the move-day copy without a word. The marker now records the old
database's last checkpoint, and a later start refuses when it moved on;
the guide says how to move the current database instead. The disk check
leaves room for the first pre-migration dump, and the move check seeds
the old database with v1.45's own migrations.
The Postgres major-upgrade guide suggested removing the old pgdata volume
"when you are sure". That volume is a full copy of the database as it stood
before the move: account deletions, trash purges and key rotations after it
never reach it. The guide now says so and makes removing it part of the
move.
The compose file stays on 16. Changing only the image line stops the stack:
the 18 image refuses a data directory from an older major and expects its
volume one level up. The runbook walks the dump and restore into a fresh
volume, keeps the old one as the way back, and is linked from the update
section and the compose pin.
Marc-André Bombeck