Re: Misleading panic message in backend/access/transam/xlog.c

From: Andres Freund <andres(at)anarazel(dot)de>
To: pgsql-hackers(at)lists(dot)postgresql(dot)org,Michael Paquier <michael(at)paquier(dot)xyz>
Cc: Michael Banck <michael(dot)banck(at)credativ(dot)de>,Postgres Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Misleading panic message in backend/access/transam/xlog.c
Date: 2019-01-10 01:09:19
Message-ID: 3BB1E07D-6C0C-47B8-B2C6-3EB9D38BC0C8@anarazel.de
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On January 9, 2019 5:01:40 PM PST, Michael Paquier <michael(at)paquier(dot)xyz> wrote:
>On Wed, Jan 09, 2019 at 08:10:43AM -0800, Andres Freund wrote:
>> I'm quite unenthused about that. If anything, I'd remove detail and
>use
>> the standard error message about not being able to write to a file,
>and
>> include the full path.
>
>Partially agreed. Those messages have been left out of 56df07b
>because they include some context about the offset and the length, and
>I don't think that we simply want to remove that information. What
>about making the offset and the length part of an extra errdetail, and
>switch the main error string to a more generic one?

IIRC we have other such errors including offset and length (and if not we'll grow some). It should be formatted as a genetic write error with the file name, no reference to log file, etc, even if there's no precedent.

Andres
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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