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Date: Fri, 8 Nov 2019 14:35:31 +0100
From: Christoph Berg <myon@debian.org>
To: Julien Rouhaud <rjuju123@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Subject: Re: Monitoring disk space from within the server
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Re: Julien Rouhaud 2019-11-08 <CAOBaU_YVGEnsnP1ufp42NiJ+WvPHRWBOsBOcaxWxsbXPN_sdNQ@mail.gmail.com>
> Shouldn't we have something more generic, in hope that this eventually
> get implemented on Windows?  I'm also wondering if getting the fs
> information is enough, as there might be quota.

The name is certainly not a good pick, it's not meant to be a raw
statfs() wrapper but something more high-level. I just went with that
to have something working to start with.

How about these?
pg_tablespace_stats()
pg_tablespace_space()
pg_tablespace_disk_space()

Christoph