Re: fairywren is generating bogus BASE_BACKUP commands

From: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: fairywren is generating bogus BASE_BACKUP commands
Date: 2022-01-21 22:10:01
Message-ID: CA+hUKG+gvMApYooCDD51Qq8U-oD6ORCc_m_0QAwYD--6WuFS9g@mail.gmail.com
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On Sat, Jan 22, 2022 at 10:42 AM Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> # Running: pg_basebackup --no-sync -cfast --target
> server:/home/pgrunner/bf/root/HEAD/pgsql.build/src/bin/pg_basebackup/tmp_check/tmp_test_Ag8r/backuponserver
> -X none
> pg_basebackup: error: could not initiate base backup: ERROR:
> unrecognized target: "server;C"
>
> "server" is a valid backup target, but "server;C" is not. And I think
> this must be a bug on the client side, because the server logs the
> generated query:

It looks a bit like msys perl could be recognising
"server:/home/pgrunner/..." and converting it to
"server;C:\tools\msys64\home\pgrunner\...". From a bit of light
googling I see that such conversions happen in msys perl's system()
unless you turn them off with MSYS_NO_PATHCONV, and then we'd have to
do it ourselves in the right places.

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