| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | Dilip Kumar <dilipbalaut(at)gmail(dot)com>, 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: | 2022-03-30 23:36:59 |
| Message-ID: | 20220330233659.4oxrpamvzvyk4pgw@alap3.anarazel.de |
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| Lists: | pgsql-hackers |
Hi,
On 2022-03-29 11:55:05 -0400, Robert Haas wrote:
> I committed v6 instead.
I was just discussing the WAL prefetching patch with Thomas. A question in
that discussion made me look at the coverage of REDO for CREATE DATABASE:
https://coverage.postgresql.org/src/backend/commands/dbcommands.c.gcov.html
Seems there's currently nothing hitting the REDO for
XLOG_DBASE_CREATE_FILE_COPY (currently line 3019). I think it'd be good to
keep coverage for that. How about adding a
CREATE DATABASE ... STRATEGY file_copy
to 001_stream_rep.pl?
Might be worth adding a test for ALTER DATABASE ... SET TABLESPACE at the same
time, this patch did affect that path in some minor ways. And, somewhat
shockingly, we don't have a single test for it.
- Andres
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