Re: PG 14 pg_basebackup accepts --compress=server-zst option

On Fri, Jun 7, 2024 at 12:32 AM David G. Johnston <
david(dot)g(dot)johnston(at)gmail(dot)com> wrote:

> On Thursday, June 6, 2024, Kashif Zeeshan <kashi(dot)zeeshan(at)gmail(dot)com> wrote:
>
>> Hi
>>
>> On Fri, Jun 7, 2024 at 6:54 AM Ron Johnson <ronljohnsonjr(at)gmail(dot)com>
>> wrote:
>>
>>>
>>> https://www.postgresql.org/docs/14/app-pgbasebackup.html doesn't
>>> mention "--compress=[{client|server}-]method". That first appears in the
>>> v15 docs.
>>>
>>> And yet pg_basebackup doesn't complain about an invalid option.
>>> (Technically, this is a bug; I first noticed it a week after copying a
>>> script from a PG 15 server to five PG 14 servers, and running it quite a
>>> few times without fail.)
>>>
>>
> Seems a bit suspect, but as your script doesn’t mention tar the option
> itself is apparently ignored, I guess silently.
>

Does this mean that "--compress=server-zst" is only relevant with
--format=tar?

> Assuming this isn’t an actual regression in behavior in a patch-released
> older version
>

My apologies for not mentioning the version: 14.12-1PGDG-rhel8.

> I don’t see us adding an error message at this point.
>

Me neither. It just seemed odd.