From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-fsdevel-owner@vger.kernel.org>
Received: from mondschein.lichtvoll.de ([194.150.191.11]:56315 "EHLO
        mail.lichtvoll.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1726401AbeIEMIy (ORCPT
        <rfc822;linux-fsdevel@vger.kernel.org>);
        Wed, 5 Sep 2018 08:08:54 -0400
From: Martin Steigerwald <martin@lichtvoll.de>
To: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Jeff Layton <jlayton@redhat.com>,
        =?utf-8?B?54Sm5pmT5Yas?= <milestonejxd@gmail.com>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: POSIX violation by writeback error
Date: Wed, 05 Sep 2018 09:39:58 +0200
Message-ID: <3805399.0d8HT3LL4o@merkaba>
In-Reply-To: <20180905070847.GC24519@BitWizard.nl>
References: <CAJDTihz-rFb2SGaxZsQnXGnee_2qW_ynhPe=tZ4yzQBSV_KQ1g@mail.gmail.com> <cd137e88c9e882200c08c7336aa7b5a1c84a7ba3.camel@redhat.com> <20180905070847.GC24519@BitWizard.nl>
MIME-Version: 1.0
Content-Transfer-Encoding: 8BIT
Content-Type: text/plain; charset="iso-8859-1"
Sender: linux-fsdevel-owner@vger.kernel.org
List-ID: <linux-fsdevel.vger.kernel.org>

Rogier Wolff - 05.09.18, 09:08:
> So when a mail queuer puts mail the mailq files and the mail processor
> can get them out of there intact, nobody is going to notice.  (I know
> mail queuers should call fsync and report errors when that fails, but
> there are bound to be applications where calling fsync is not
> appropriate (*))

AFAIK at least Postfix MDA only reports mail as being accepted over SMTP 
once fsync() on the mail file completed successfully. And I�d expect 
every sensible MDA to do this. I don�t know how Dovecot MDA which I 
currently use for sieve support does this tough.

-- 
Martin