Path: csiph.com!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Rainer Weikusat <rweikusat@mssgmbh.com>
Newsgroups: comp.os.linux.development.apps
Subject: Re: file I/O: writ to disk in parallel?
Date: Thu, 21 Jun 2012 14:17:56 +0100
Lines: 9
Message-ID: <87vcikercr.fsf@sapphire.mobileactivedefense.com>
References: <c7cb8f1d-73ec-45ed-9bbe-b06a6e5c140c@googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: individual.net DWSzCkhxeIeUEX4uzIu5LAygJbDE4pd0jH0gEL37Epuv8hjUc2wP9rd57IGKCQDW4=
Cancel-Lock: sha1:i2wzIhnqAqvhyss2Cnd21m5Ai3E= sha1:jxQFiEmGGi60fKZLXR51m7/oM54=
User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux)
Xref: csiph.com comp.os.linux.development.apps:489

lmike <lmike3000@gmail.com> writes:
> Say an application code calls fwrite/write etc. to write a very long
> string "aaa ... 123 ... ccc" to a disk file, is it ever possible
> that the app/box crashes in the middle of the write operation, then
> it leaves a garbage like "aaa ... @#$@#$ ... ccc" or "@#$%@#$
> ... 123 ... ccc" in the disk file?

Trivially, yes. Even the shortest actual write needs a finite amount
of time and 'something bad' could happen during this time.