Date: Wed, 28 Feb 2018 13:52:20 -0500
From: Dianne Skoll <dfs@roaringpenguin.com>
Cc: pgsql-admin@lists.postgresql.org
Subject: Re: Reliable WAL file shipping over unreliable network
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On Wed, 28 Feb 2018 13:49:33 -0500
Rui DeSousa <rui.desousa@icloud.com> wrote:

> Really? I think you really need to think about it.  You are dealing
> with a race condition.

Not at all, assuming rsync is being called by PostgreSQL's archive_command.

> You are dealing with a race condition involving filesystem metadata.

Nope.  Not true.  What are the things that are racing?

If you rsync data to make a base backup, then yes, use -c... but not because
of any race condition.  Instead, it's because of the coarse filesystem
timestamp granularity.

Regards,

Dianne.