Horton

Re: [Proposal] Fully WAL logged CREATE DATABASE - No Checkpoints

Dilip Kumar <dilipbalaut@gmail.com>

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From: Dilip Kumar <dilipbalaut@gmail.com>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Andres Freund <andres@anarazel.de>, Ashutosh Sharma <ashu.coek88@gmail.com>, Maciek Sakrejda <m.sakrejda@gmail.com>, Bruce Momjian <bruce@momjian.us>, Alvaro Herrera <alvherre@alvh.no-ip.org>, Andrew Dunstan <andrew@dunslane.net>, Heikki Linnakangas <hlinnaka@iki.fi>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2022-03-30T11:47:41Z
Lists: pgsql-hackers

Attachments

On Tue, Mar 29, 2022 at 9:25 PM Robert Haas <robertmhaas@gmail.com> wrote:
>
> On Mon, Mar 28, 2022 at 3:08 PM Robert Haas <robertmhaas@gmail.com> wrote:
> > smgrcreate() as we would for most WAL records or whether it should be
> > adopting the new system introduced by
> > 49d9cfc68bf4e0d32a948fe72d5a0ef7f464944e. I wrote about this concern
> > over here:
> >
> > http://postgr.es/m/CA+TgmoYcUPL+WOJL2ZzhH=zmrhj0iOQ=iCFM0SuYqBbqZEamEg@mail.gmail.com
> >
> > But apart from that question your adaptations here look reasonable to me.
>
> That commit having been reverted, I committed v6 instead. Let's see
> what breaks...
>

There was a duplicate error check for the invalid createdb strategy
option in the test case, although it would not create any issue but it
is duplicate so I have fixed it in the attached patch.



-- 
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com

Commits

  1. When using the WAL-logged CREATE DATABASE strategy, bulk extend.

  2. Avoid using a fake relcache entry to own an SmgrRelation.

  3. Fix data-corruption hazard in WAL-logged CREATE DATABASE.

  4. initdb: When running CREATE DATABASE, use STRATEGY = WAL_COPY.

  5. Simplify a needlessly-complicated regular expression.

  6. In 020_createdb.pl, change order of command-line arguments.

  7. Add new block-by-block strategy for CREATE DATABASE.

  8. Fix replay of create database records on standby

  9. Refactor code for reading and writing relation map files.

  10. Replace RelationOpenSmgr() with RelationGetSmgr().

  11. Refactor the fsync queue for wider use.