On Tue, Jan 16, 2018 at 3:04 PM Tom Lane <tgl@xxxxxxxxxxxxx> wrote:
Daniel Farina <daniel@xxxxxx> writes:
> I am looking at a database with a wide (~500G) divergence between the total
> space expended by the database directory and the result of select
> sum(pg_relation_size(oid)) from pg_class;.
Odd.
> I located about 280G of apparent extra space by performing an anti-join
> between files on disk and files in the catalog via the pg_class.relfilenode
> field.
Umm ... are you accounting for catalogs that have zeroes in
pg_class.relfilenode? It's generally better to rely on the
pg_relation_filenode(oid) function than the raw column contents.
Yeah, the catalogs are not considered here (oids < 10000). The oids in question are rather high. Let me re-run the antijoin with the function though....
Indeed, same result.
