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SubjectRe: XFS: how to NOT null files on fsck?
On Fri, Jul 09, 2004 at 09:37:48AM -0700, L A Walsh wrote:

> Even after multiple syncs, files edited within the past few days
> will sometimes go mysteriously null. Good reason to do daily
> backups as the backups will usually contain the correct file...

I *never* see this even when beating the hell out of machines and
trying to break things.

I do see nulls in cases where the metadata was updated and the data
didn't flush, that's supposed to happen.

> Now if we could just come up with a reproducable test case...but
> when I try to reproduce it, it doesn't. Grrr....it knows when I'm
> scrutinizing!! :-)

Use anything that handles dotfiles or configuration badly (ie. KDE),
make some changes or just 'run it' for a bit. Every now something
rewrites some files. Yank the power a few times and sooner or later
you'll end up with problems under KDE certainly.

Sane applications (MTAs like postfix for example) don't have this
problem because they were written with more clue. If they did have
this problem people would scream, because mail would get lost... and
large mail servers might have tens of thousands of files moving about
in-flight, much more strenuous that a few dot-files.


--cw
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