Huh! I suppose I don’t know; I just assumed it would take a bunch of fragile, error-prone upgrade jumps across major
releasesto get five major releases forward.
I’ll definitely follow up on your suggestion, as it is by far the simplest!
> On Feb 16, 2022, at 7:08 AM, Paul Smith <paul@pscs.co.uk> wrote:
>
> On 16/02/2022 11:24, Alex Balashov wrote:
>> I’m faced with the daunting prospect of upgrading a PG 9.6 installation to 14, in the process migrating a ~400 GB
database.Due to the large jump in major versions, the on-disk block storage of course will not be in the slightest bit
binary-compatible,
>
> How do you know it will not be binary compatible?
>
> I'm fairly sure I've upgraded 9.5 to 14 using pg_upgrade... If you use the 'link' option in pg_upgrade it just takes
afew minutes with databases that big.
>
> I'd take a backup, put it on a test machine with 9.5 and try to upgrade it. You may be pleasantly surprised
>
>
> Paul
>
>
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