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From: "Felix E. Klee" <felix.klee@inka.de>
To: Iustin Pop <iusty@k1024.org>
Cc: xfs-oss <xfs@oss.sgi.com>
Subject: Re: Data safety horror stories?
Date: Mon, 11 Feb 2008 22:23:09 +0100	[thread overview]
Message-ID: <1202764989.11126.1236296081@webmail.messagingengine.com> (raw)
In-Reply-To: <20080211171209.GA7567@teal.hq.k1024.org>

Hi Justin,

thanks for the info!

On Mon, 11 Feb 2008 18:12:09 +0100, "Iustin Pop" <iusty@k1024.org> said:
> No, XFS will not lose any data that the application has committed to
> the disk.

OK, but just to make sure: The following FAQ entry refers only to
*newly* created files - right?

http://oss.sgi.com/projects/xfs/faq.html#nulls

> Improperly written applications and/or improperly configured systems
> might have issues with recently written files losing data.

Again, just to make sure that I understood you correctly: Could you name
an example?

> Be sure the read the FAQ, especially the section about write cache on
> dekstop/consumer HDDs.

You are probably referring to the following entry.  I now disabled the
write cache of the 2nd HDD in Windows (remember my configuration).  I
wonder though: Wouldn't it be possible to design journaling in a way so
that the write cache does never cause problems? Could someone provide an
example which illustrates the write cache problem in simple terms?

http://oss.sgi.com/projects/xfs/faq.html#wcache

> Just my opinion as an XFS user, your mileage might vary.

Hopefully, it's not about opinions ...

- Felix
-- 
Dipl.-Phys. Felix E. Klee
Naunynstr. 2, 76530 Baden-Baden, Germany
Tel.: +49 7221 396961, Fax: +49 7221 396960, Mobile: +49 174 1386060
http://www.linkedin.com/in/feklee

  reply	other threads:[~2008-02-11 21:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-11 16:46 Data safety horror stories? Felix E. Klee
2008-02-11 17:12 ` Iustin Pop
2008-02-11 21:23   ` Felix E. Klee [this message]
2008-02-18 21:28     ` Martin Steigerwald
2008-02-18 21:41       ` Felix E. Klee
2008-02-18 21:49         ` Martin Steigerwald
2008-02-18 22:50     ` David Chinner
2008-02-11 22:03 ` David Chinner

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