[RFC] VFS: data=ordered (was: [Advocacy] Re: 3ware 9650 tips)

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Matthew Wilcox wrote:
> On Mon, Jul 16, 2007 at 08:40:00PM +0300, Al Boldi wrote:
> > XFS surely rocks, but it's missing one critical component: data=ordered
> > And that's one component that's just too critical to overlook for an
> > enterprise environment that is built on data-integrity over performance.
> >
> > So that's the secret why people still use ext3, and XFS' reliance on
> > external hardware to ensure integrity is really misplaced.
> >
> > Now, maybe when we get the data=ordered onto the VFS level, then maybe
> > XFS may become viable for the enterprise, and ext3 may cease to be KING.
>
> Wow, thanks for bringing an advocacy thread onto linux-fsdevel.  Just what
> we wanted.  Do you have any insight into how to "get the data=ordered
> onto the VFS level"?  Because to me, that sounds like pure nonsense.

Well, conceptually it sounds like a piece of cake, technically your guess is 
as good as mine.  IIRC, akpm once mentioned something like this.

But seriously, can you think of a technical reason why it shouldn't be 
possible to abstract data=ordered mode out into the VFS?


Thanks!

--
Al

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