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From: Alexander Kukushkin <cyberdemn@gmail.com>
Date: Wed, 22 Apr 2026 17:15:27 +0200
Message-ID: <CAFh8B=nP+xpSAgA6vMvoLAiowo3zQHtecZn-3VzXNruvx7cUMw@mail.gmail.com>
Subject: Re: Patroni basebackup server compression not working in 4.1.1
To: Adrian Klaver <adrian.klaver@aklaver.com>
Cc: Radu Radutiu <rradutiu@gmail.com>, pgsql-general@lists.postgresql.org
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It looks like a bug, it fails to correctly resolve the Postgres version
when $PGDATA is empty :(

On Wed, 22 Apr 2026 at 16:47, Adrian Klaver <adrian.klaver@aklaver.com>
wrote:

> On 4/22/26 12:30 AM, Radu Radutiu wrote:
> > Hi,
> >
> > I am not able to enable basebackup server compression feature, which is
> > new in patroni 4.1.1.
> > OS: OEL 9.7
> > Patroni version: patroni-4.1.1-1PGDG.rhel9.7.noarch
> > Postgres: postgresql18-server-18.3-1PGDG.rhel9.7.x86_64
> > The following setting has been added to DCS under postgresql:
> > basebackup:
> >    - compress: server-zstd
> > I still get the following error in the patroni.log:
> > 2026-04-22 02:51:44,693 ERROR: compress option for basebackup is not
> allowed
> > 2026-04-22 02:51:44,693 ERROR: Error when parsing basebackup key-value
> > option server-zstd: only one key-value is allowed and value should be a
> > string
>
> Have you tried with?:
>
> - compress: 'server-zstd'
>
> Per:
>
> "ERROR: Error when parsing basebackup key-value option server-zstd: only
> one key-value is allowed and value should be a string"
>
> >
> > Has anyone been able to confirm that the feature is working?
> >
> > Best regards,
> > Radu
>
>
> --
> Adrian Klaver
> adrian.klaver@aklaver.com
>
>
>

-- 
Regards,
--
Alexander Kukushkin

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<div dir=3D"ltr">It looks like a bug, it fails to correctly=C2=A0resolve th=
e Postgres version when $PGDATA is empty :(</div><br><div class=3D"gmail_qu=
ote gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, 22=
 Apr 2026 at 16:47, Adrian Klaver &lt;<a href=3D"mailto:adrian.klaver@aklav=
er.com">adrian.klaver@aklaver.com</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex">On 4/22/26 12:30 AM, Radu Radutiu wrote:<b=
r>
&gt; Hi,<br>
&gt; <br>
&gt; I am not able to enable basebackup=C2=A0server compression feature, wh=
ich is <br>
&gt; new in patroni 4.1.1.<br>
&gt; OS: OEL 9.7<br>
&gt; Patroni version:=C2=A0patroni-4.1.1-1PGDG.rhel9.7.noarch<br>
&gt; Postgres:=C2=A0postgresql18-server-18.3-1PGDG.rhel9.7.x86_64<br>
&gt; The following setting has been added to DCS under postgresql:<br>
&gt; basebackup:<br>
&gt;=C2=A0 =C2=A0 - compress: server-zstd<br>
&gt; I still get the following error in the patroni.log:<br>
&gt; 2026-04-22 02:51:44,693 ERROR: compress option for basebackup is not a=
llowed<br>
&gt; 2026-04-22 02:51:44,693 ERROR: Error when parsing basebackup key-value=
 <br>
&gt; option server-zstd: only one key-value is allowed and value should be =
a <br>
&gt; string<br>
<br>
Have you tried with?:<br>
<br>
- compress: &#39;server-zstd&#39;<br>
<br>
Per:<br>
<br>
&quot;ERROR: Error when parsing basebackup key-value option server-zstd: on=
ly <br>
one key-value is allowed and value should be a string&quot;<br>
<br>
&gt; <br>
&gt; Has anyone been able to confirm that the feature is working?<br>
&gt; <br>
&gt; Best=C2=A0regards,<br>
&gt; Radu<br>
<br>
<br>
-- <br>
Adrian Klaver<br>
<a href=3D"mailto:adrian.klaver@aklaver.com" target=3D"_blank">adrian.klave=
r@aklaver.com</a><br>
<br>
<br>
</blockquote></div><div><br clear=3D"all"></div><br><span class=3D"gmail_si=
gnature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature"><d=
iv dir=3D"ltr"><div>Regards,</div><div>--</div><div>Alexander Kukushkin<br>=
</div></div></div>

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