Re: make pg_ctl more friendly

From: Crisp Lee <litianxiang01(at)gmail(dot)com>
To: Junwang Zhao <zhjwpku(at)gmail(dot)com>
Cc: Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Bruce Momjian <bruce(at)momjian(dot)us>
Subject: Re: make pg_ctl more friendly
Date: 2023-11-09 07:32:42
Message-ID: CAGHPtV6tkbZ+1JeWM-RpWVg8ocELwtec07+ouiHrE7nb-vYNCA@mail.gmail.com
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Hi,

I thought the PITR shutdown was DB_SHUTDOWN. I made a mistake. The v2
attach looks good.

On Thu, Nov 9, 2023 at 3:19 PM Junwang Zhao <zhjwpku(at)gmail(dot)com> wrote:

> On Thu, Nov 9, 2023 at 3:08 PM Junwang Zhao <zhjwpku(at)gmail(dot)com> wrote:
> >
> > On Thu, Nov 9, 2023 at 9:57 AM Crisp Lee <litianxiang01(at)gmail(dot)com>
> wrote:
> > >
> > > Hi,
> > >
> > > I know it. But my question is not that. I did a PITR operation with
> recovery_target_name and recovery_target_action('shutdown'). The PITR
> process was very short and the PITR was done before pg_ctl check. The
> postmaster shutdown due to recovery_target_action, and there was no crash.
> But pg_ctl told me about startup failure. I think the startup had
> succeeded and the result was not a exception. pg_ctl should tell users
> about detailed messages.
> > >
> > > On Thu, Nov 9, 2023 at 9:32 AM Andres Freund <andres(at)anarazel(dot)de>
> wrote:
> > >>
> > >> Hi,
> > >>
> > >> On 2023-11-09 09:29:32 +0800, Crisp Lee wrote:
> > >> > How to judge from 'DB_SHUTDOWNED' that PITR ends normally?
> 'DB_SHUTDOWNED'
> > >> > is just a state, it could not give more meaning, so I reuse the
> > >> > recovery.done.
> > >>
> > >> DB_SHUTDOWNED cannot be encountered while recovery is ongoing. If
> there was a
> > >> hard crash, you'd see DB_IN_ARCHIVE_RECOVERY or such, if the command
> was shut
> > >> down orderly before PITR has finished, you'd see
> DB_SHUTDOWNED_IN_RECOVERY.
> > >>
> > >> - Andres
> >
> > After a PITR shutdown, the db state should be *shut down in recovery*,
> try the
> > patch attached.
> >
>
> previous patch has some format issues, V2 attached.
>
> >
> > --
> > Regards
> > Junwang Zhao
>
>
>
> --
> Regards
> Junwang Zhao
>

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