From: | Michael Paquier <michael(at)paquier(dot)xyz> |
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To: | Nathan Bossart <nathandbossart(at)gmail(dot)com> |
Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Ranier Vilela <ranier(dot)vf(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: use CREATE DATABASE STRATEGY = FILE_COPY in pg_upgrade |
Date: | 2024-06-20 04:29:40 |
Message-ID: | ZnOwNE_z0PaA_Naa@paquier.xyz |
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Lists: | pgsql-hackers |
On Wed, Jun 19, 2024 at 08:37:17AM -0500, Nathan Bossart wrote:
> My understanding is that you basically have to restart the upgrade from
> scratch if that happens. I suppose there could be a problem if you try to
> use the half-upgraded cluster after a crash, but I imagine you have a good
> chance of encountering other problems if you do that, too. So I don't
> think we care...
It's never been assumed that it would be safe to redo a
pg_upgradeafter a crash on a cluster initdb'd for the upgrade, so I
don't think we need to care about that, as well.
One failure I suspect would quickly be faced is OIDs getting reused
again as these are currently kept consistent.
--
Michael
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