| From: | Jacob Champion <jchampion(at)timescale(dot)com> |
|---|---|
| To: | Aleksander Alekseev <aleksander(at)timescale(dot)com> |
| Cc: | Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Maxim Orlov <orlovmg(at)gmail(dot)com>, Japin Li <japinli(at)hotmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Peter Geoghegan <pg(at)bowt(dot)ie>, Michael Paquier <michael(at)paquier(dot)xyz>, Ian Lawrence Barwick <barwick(at)gmail(dot)com>, Hamid Akhtar <hamid(dot)akhtar(at)percona(dot)com>, Pavel Borisov <pashkin(dot)elfe(at)gmail(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, Ilya Anfimov <ilan(at)tzirechnoy(dot)com> |
| Subject: | Re: XID formatting and SLRU refactorings (was: Add 64-bit XIDs into PostgreSQL 15) |
| Date: | 2023-01-11 16:49:52 |
| Message-ID: | CAAWbhmhOgrm1pKu=6AkdzEbvAJLp=M4Enaq-Zft63pusdUAzDA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Jan 11, 2023 at 1:48 AM Aleksander Alekseev
<aleksander(at)timescale(dot)com> wrote:
> After reading [1] carefully it looks like we shouldn't worry about
> this. The upgrade procedure explicitly requires to run `pg_ctl stop`
> during step 8 of the upgrade procedure, i.e. not in the immediate mode
> [2].
Yeah, pg_upgrade will briefly start and stop the old server to make
sure all the WAL is replayed, and won't transfer any of the files
over. AFAIK, major-version WAL changes are fine; it was the previous
claim that we could do it in a minor version that I was unsure about.
Thanks!
--Jacob
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