| From: | Maxim Orlov <orlovmg(at)gmail(dot)com> |
|---|---|
| To: | Aleksander Alekseev <aleksander(at)timescale(dot)com> |
| Cc: | Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Jacob Champion <jchampion(at)timescale(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: | 2023-02-22 14:29:29 |
| Message-ID: | CACG=ezaxJjQsHYuasKhAgR3-5VuU1+JFVjv=ivqhOwH=dbd3Fw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, 21 Feb 2023 at 16:59, Aleksander Alekseev <aleksander(at)timescale(dot)com>
wrote:
> Hi,
>
> One thing that still bothers me is that during the upgrade we only
> migrate the CLOG segments (i.e. pg_xact / pg_clog) and completely
> ignore all the rest of SLRUs:
>
> * pg_commit_ts
> * pg_multixact/offsets
> * pg_multixact/members
> * pg_subtrans
> * pg_notify
> * pg_serial
Hi! We do ignore these values, since in order to pg_upgrade the server it
must be properly stopped and no transactions can outlast this moment.
--
Best regards,
Maxim Orlov.
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