Groups > comp.os.linux.development.apps > #489

Re: file I/O: writ to disk in parallel?

From	Rainer Weikusat <rweikusat@mssgmbh.com>
Newsgroups	comp.os.linux.development.apps
Subject	Re: file I/O: writ to disk in parallel?
Date	2012-06-21 14:17 +0100
Message-ID	<87vcikercr.fsf@sapphire.mobileactivedefense.com> (permalink)
References	<c7cb8f1d-73ec-45ed-9bbe-b06a6e5c140c@googlegroups.com>

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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.

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file I/O: writ to disk in parallel? lmike <lmike3000@gmail.com> - 2012-06-20 20:35 -0700
  Re: file I/O: writ to disk in parallel? Lusotec <nomail@nomail.not> - 2012-06-21 13:33 +0100
  Re: file I/O: writ to disk in parallel? Rainer Weikusat <rweikusat@mssgmbh.com> - 2012-06-21 14:17 +0100

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