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From: Michael Banck <michael.banck@credativ.de>
To: tushar <tushar.ahuja@enterprisedb.com>
Cc: Amul Sul <sulamul@gmail.com>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Amit Kapila <amit.kapila16@gmail.com>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Subject: Re: [Patch] ALTER SYSTEM READ ONLY
Date: Fri, 26 Jun 2020 08:45:53 +0200
Message-ID: <5ef599a2.1c69fb81.f8b1d.dd8a@mx.google.com> (raw)
In-Reply-To: <e974a552-3e3e-c735-5179-7708dfa26ffb@enterprisedb.com>
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	<e974a552-3e3e-c735-5179-7708dfa26ffb@enterprisedb.com>

Hi,

On Wed, Jun 24, 2020 at 01:54:29PM +0530, tushar wrote:
> On 6/22/20 11:59 AM, Amul Sul wrote:
> > 2. Now skipping the startup checkpoint if the system is read-only mode, as
> > discussed [2].
> 
> I am not able to perform pg_checksums o/p after shutting down my server in
> read only  mode .
> 
> Steps -
> 
> 1.initdb (./initdb -k -D data)
> 2.start the server(./pg_ctl -D data start)
> 3.connect to psql (./psql postgres)
> 4.Fire query (alter system read only;)
> 5.shutdown the server(./pg_ctl -D data stop)
> 6.pg_checksums
> 
> [edb@tushar-ldap-docker bin]$ ./pg_checksums -D data
> pg_checksums: error: cluster must be shut down
> [edb@tushar-ldap-docker bin]$

What's the 'Database cluster state' from pg_controldata at this point?


Michael

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