[mythtvnz] jumpy video

[David Lowe]

My understanding of XFS is that is does not write new files in fragments in
the first place (unlike, say, DOS) because of the clever way it does lazy
writes. Therefore, the only way a file can become fragmented is if you
change it's size significantly. This tends not to happen with media
recordings - the file is created and that's pretty much it until you delete
it. (unlike documents and spreadsheets that get updated.)

Consequently, I woudn't think there's going to be much to gain from
fragmenting XFS.

And there are some gotchas - people report losing files. So I'd use it with
some considerable caution and only after appropriate research.

- D

On Sat, Sep 6, 2008 at 9:45 AM, Rob Reid <rob at robreid.co.nz> wrote:

> Barry Clearwater wrote the following on 04/09/2008 16:45:
> > Isn't the downside of xfs that it needs to be defragmented occasionally?
> > With a mythbox always on, when would you be best to do that?
> >
> Just playing around with an install of mythbuntu here and noticed that
> under the Control Centre>Advanced Management there is an option for
> 'Enable daily defragmentation of your XFS files systems'.
>
> cheers
>
> rcr
>
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