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From: Laurenz Albe <[email protected]>
To: Ghiurea, Isabella <[email protected]>
To: [email protected] <[email protected]>
Subject: Re: Re: DB size  value different than  "/data"  dir size
Date: Wed, 13 Aug 2025 07:09:21 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>

On Mon, 2025-08-11 at 14:13 +0000, Ghiurea, Isabella wrote:
> I believe this is related to VACUUM FULL behavior in a streaming replication cfg ,
> for the standby server the space is not been reclaimed , But the sieze of db reported
> with pg_pretty_db_size is identical on both db size but is  not the actual sum of
> /var/lib/pgsql/data1 files +dir size on the active PG were vacuum full reclaim the space.
> 
> Is this a normal behavior  in PG with reporting incorrect db size if vacuum full has
> not reclaim the OS disk space on both server?

VACUUM (FULL) will also reclaim the size on the standby.
There can be some delay in the case of a replication conflict.

Yours,
Laurenz Albe

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