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help / color / mirror / Atom feedFrom: Michael Paquier <[email protected]>
To: Hayato Kuroda (Fujitsu) <[email protected]>
Cc: 'PostgreSQL Hackers' <[email protected]>
Subject: Re: pg_ctl start may return 0 even if the postmaster has been already started on Windows
Date: Thu, 7 Sep 2023 16:37:08 +0900
Message-ID: <[email protected]> (raw)
In-Reply-To: <TYAPR01MB586654E2D74B838021BE77CAF5EEA@TYAPR01MB5866.jpnprd01.prod.outlook.com>
References: <TYAPR01MB586654E2D74B838021BE77CAF5EEA@TYAPR01MB5866.jpnprd01.prod.outlook.com>
On Thu, Sep 07, 2023 at 07:07:36AM +0000, Hayato Kuroda (Fujitsu) wrote:
> # Problem
>
> The "pg_ctl start" command returns 0 (succeeded) even if the cluster has
> already been started. This occurs on Windows environment, and when the command
> is executed just after postmaster starts.
Not failing on `pg_ctl start` if the command is run on a data folder
that has already been started previously by a different command with a
postmaster still alive feels like cheating, because pg_ctl is lying
about its result. If pg_ctl wants to start a cluster but is not able
to do it, either because the postmaster failed at startup or because
the cluster has already started, it should report a failure. Now, I
also recall that the processes spawned by pg_ctl on Windows make the
status handling rather tricky to reason about..
--
Michael
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Subject: Re: pg_ctl start may return 0 even if the postmaster has been already started on Windows
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