Can take filesystem bkp of pg data folder when server is running - Mailing list pgsql-docs

From PG Doc comments form
Subject Can take filesystem bkp of pg data folder when server is running
Date
Msg-id 20180123060015.7407.32905@wrigleys.postgresql.org
Whole thread Raw
Responses Re: Can take filesystem bkp of pg data folder when server is running  (Peter Eisentraut <peter.eisentraut@2ndquadrant.com>)
List pgsql-docs
The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/10/static/backup-file.html
Description:

I am running postgresql 10 on mac and was experimenting on backup and
restore features of PG 10
I certainly can take FS backup of the cluster with TAR when server is
running and with ACTIVE client connections [dummy begin; statement]

This seems against the documented explanation for FS backup method and its
limitation.

Is there something I am missing here?

pgsql-docs by date:

Previous
From: "Ilsa Loving"
Date:
Subject: Re: What does "Table rewrite" mean?
Next
From: PG Doc comments form
Date:
Subject: v10 changes to pg_ctl --wait