Re: Available disk space per tablespace

Christoph Berg <myon@debian.org>

From: Christoph Berg <myon@debian.org>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: Quan Zongliang <quanzongliang@yeah.net>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2025-03-15T17:00:36Z
Lists: pgsql-hackers
Re: Thomas Munro
> > Hmm. Is looping on EINTR worth the trouble?
> 
> I was just wondering if it might be one of those oddballs that ignores
> SA_RESTART, but I guess that doesn't seem too likely (I mean, first
> you'd probably have to have a reason to sleep or some other special
> reason, and who knows what some unusual file systems might do).  It
> certainly doesn't on the systems I tried.  So I guess not until we
> have other evidence.

Gnulib's get_fs_usage() (which is what GNU coreutil's df uses)
does not handle EINTR either.

There is some code that does int width expansion, but I believe we
don't need that since the `fst.f_bavail * fst.f_frsize` multiplication
takes care of converting that to int64 (if it wasn't already 64bits
before).

Christoph