Re: fsync error handling in pg_receivewal, pg_recvlogical

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: fsync error handling in pg_receivewal, pg_recvlogical
Date: 2019-06-26 04:11:31
Message-ID: 20190626041131.GI1714@paquier.xyz
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On Tue, Jun 25, 2019 at 02:23:05PM +0200, Peter Eisentraut wrote:
> Yeah, there is more to do. The reason I'm focusing on these two right
> now is that they would typically run as a background service, and a
> clean exit is most important there. In the other cases, the program
> runs more often in the foreground and you can see error messages. There
> are also some cases where fsync() failures are intentionally ignored
> ((void) casts), so some of that would need to be investigated further.

The remaining three calls all go through file_utils.c.

> Here is a patch to get started. Note that these calls don't go through
> file_utils.c, so it's a separate issue anyway.

Why using a different error code. Using EXIT_FAILURE is a more common
practice in the in-core binaries. The patch looks fine to me except
that, that's a good first cut.
--
Michael

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