Re: Data safety horror stories?

[David Chinner <dgc@sgi.com>]

On Mon, Feb 11, 2008 at 10:23:09PM +0100, Felix E. Klee wrote:
> 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

No - it can affect an file where the write is extending the file.
The NULLs problem should be very rare now - we've fixed the common
causes of this problem....

> > 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?

I suggest watching the video of this talk from the 2007 linux.conf.au:

http://lca2007.linux.org.au/talk/278.html

It's all about how applications do stupid stuff that can lose data.

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group