On 8/26/25 12:43, Dimitrios Apostolou 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.
Unfortunately after I did pg_restore to a new server, I notice that the
dumps from the new server are not being de-duplicated, all blocks are
considered new.
What are the pg_dump/pg_restore commands?
What are the Postgres versions involved?
Are they community versions of Postgres or something else?
What is the depduplication program?
Thanks in advance,
Dimitris
--
Adrian Klaver
adrian.kla...@aklaver.com
