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From: David G. Johnston <[email protected]>
To: Alexey Shishkin <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: clarification for pg_basebackup and major versions
Date: Mon, 19 Jan 2026 11:23:25 -0700
Message-ID: <CAKFQuwaaYM2VL0mwQ34iEK8yxMJZ0LpQ5X3chn46Xci9_6mBtQ@mail.gmail.com> (raw)
In-Reply-To: <CALVdoE7PbL_NRqc9R1M6Hnefe54FVow4s1DLd-j1BmjpBz=LiQ@mail.gmail.com>
References: <[email protected]>
	<CAKFQuwa15OzTjrv5WE+K1BsHipHP1QSosSG=uQvgdq6SVW1JsQ@mail.gmail.com>
	<CALVdoE7PbL_NRqc9R1M6Hnefe54FVow4s1DLd-j1BmjpBz=LiQ@mail.gmail.com>

On Monday, January 19, 2026, Alexey Shishkin <
[email protected]> wrote:

> Hi, Team !
>
> Some more clarification about pg_basebackup which should be available in
> the documentation:
>
> - if pg_basebackup works between different versions of the same OS (ex.
> RHEL8 and RHEL9)
> - if pg_basebackup works between different types of OS Linux (ex. RHEL10
> and Debian13) or OS Windows (ex. Windows 2016 and Windows 2019)
> - if pg_basebackup works between different types of OS (ex. Ubuntu 24.04
> and Windows 2022)
> - if pg_basebackup works between different platforms (ex. Linux on amd64
> and Linux on arm64)
> - if pg_basebackup works between 32-bit OS and 64-bit OS
>
>>
>>
Please don’t top-post.

I agree this these dynamics aren’t readily exposed in the documentation.  I
disagree that pg_basebackup should be considered as an authoritative
location for covering the material.  It would simply link to such a
location in notes or “see also”.

In short, though, it like pretty much any client program will function
correctly regardless of differences with the server.  But a physical backup
is only truly promised to work if the environment that is processing the
data matches the environment that produced the data.

David J.

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  Subject: Re: clarification for pg_basebackup and major versions
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