From review of #2799:
- The archive is created 0600 rather than at the process umask: it holds the
install's data, and --with-settings puts .env and its secrets in it.
- restore validates everything the manifest declares before the stack is
stopped, so a damaged archive fails while DocsGPT is still running rather
than after `compose down` has taken it away.
- Only the volumes a backup is made of are restored. A hand-made manifest can
no longer point import_volume at postgres_data, whose contents it empties.
- psql runs with ON_ERROR_STOP=on, so a restore that fails halfway cannot
start DocsGPT again and call it a success.
- import_volume unpacks into the container's own filesystem first and clears
the live volume only once the tar has come out whole, so a corrupt one
leaves the volume as it was.
- The backend and the worker stop while the archive is made and start again
even if the dump fails, so the dump and the volume tars describe the same
moment instead of drifting apart as ingestion writes.
Alex
447ae72fe2