Re: Size of /pgdata

From: Raj <rajeshkumar(dot)dba09(at)gmail(dot)com>
To: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
Cc: Pgsql-admin <pgsql-admin(at)lists(dot)postgresql(dot)org>
Subject: Re: Size of /pgdata
Date: 2026-06-15 01:18:23
Message-ID: CAJk5AtburOY2ugaH-6+8OHgOBwyyaq1V3LLozCAf57c5jtmR+w@mail.gmail.com
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No, I am using the command du -ch 327101*

On Mon, 15 Jun 2026, 01:00 Laurenz Albe, <laurenz(dot)albe(at)cybertec(dot)at> wrote:

> On Sat, 2026-06-13 at 12:18 +0530, Raj wrote:
> > I took one big sample table which is 73GB, and using relfilenode(327683)
> I tried finding the
> > underlying file size du -sh 327683* and able to find the total size the
> files occpuing and
> > found 113gb.......so for one table itself it is 40Gb additional...
>
> Investigate more:
>
> - Make sure that you don't get files from another filenode like 3276838.
>
> - If the relation (as shown by pg_relation_size('tablename')) is 73GB,
> it should consist of 327683, 327683.1, 327683.2, ..., 327683.72.
> Check what additional files there are.
>
> - Extra files can be left behind after a crash. Were there any?
>
> Yours,
> Laurenz Albe
>

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