On Tue, Aug 26, 2025 at 3:44 PM Dimitrios Apostolou <jimis@gmx.net> wrote:

Hello list,

I am storing dumps of a database (pg_dump custom format) in a
de-duplicating backup server. Each dump is many terabytes in size, so
deduplication is very important. And de-duplication itself is based on
rolling checksums which is pretty flexible, it can compensate for blocks
moving by some offset.

This might be a silly question, but why are you using -Fc to create multi-TB dumps instead of -Fd? If nothing else, the parallelization granted by -Fd will greatly speed up the dumps.

Death to <Redacted>, and butter sauce.

Don't boil me, I'm still alive.

<Redacted> lobster!