From: | Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
---|---|
To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Andres Freund <andres(at)anarazel(dot)de>, Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com>, Maciek Sakrejda <m(dot)sakrejda(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
Subject: | Re: [Proposal] Fully WAL logged CREATE DATABASE - No Checkpoints |
Date: | 2022-03-25 14:46:16 |
Message-ID: | CAFiTN-sdxdSYObqO7-LYy=7tAB1zamT3trPq7ukfupKPMnjYdg@mail.gmail.com |
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Lists: | pgsql-hackers |
On Fri, Mar 25, 2022 at 7:41 PM Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>
> On Thu, Mar 24, 2022 at 12:12 PM Dilip Kumar <dilipbalaut(at)gmail(dot)com> wrote:
> > Thanks, I have gone through your changes in comments and docs and those LGTM.
>
> It looks like this patch will need to be updated for Alvaro's commit
> 49d9cfc68bf4e0d32a948fe72d5a0ef7f464944e. The newly added test
> 029_replay_tsp_drops.pl fails with this patch applied. The standby log
> shows:
>
> 2022-03-25 10:00:10.022 EDT [38209] LOG: entering standby mode
> 2022-03-25 10:00:10.024 EDT [38209] LOG: redo starts at 0/3000028
> 2022-03-25 10:00:10.062 EDT [38209] FATAL: could not create directory
> "pg_tblspc/16385/PG_15_202203241/16390": No such file or directory
> 2022-03-25 10:00:10.062 EDT [38209] CONTEXT: WAL redo at 0/43EBD88
> for Database/CREATE_WAL_LOG: create dir 16385/16390
>
> On a quick look, I'm guessing that XLOG_DBASE_CREATE_WAL_LOG will need
> to mirror some of the logic that was added to the replay code for the
> existing strategy, but I haven't figured out the details.
>
Yeah, I think I got it, for XLOG_DBASE_CREATE_WAL_LOG now we will have
to handle the missing parent directory case, like Alvaro handled for
the XLOG_DBASE_CREATE(_FILE_COPY) case.
--
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com
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