/tmp on tmpfs (was: Re: Summary/Minutes for today's FESCo meeting (2012-04-02))

[Karel Zak]

On Mon, Apr 02, 2012 at 08:58:12PM +0100, Richard W.M. Jones wrote:
> On Mon, Apr 02, 2012 at 08:32:56PM +0200, Miloslav Trmač wrote:
> > * #834 F18 Feature: /tmp on tmpfs -
> >   http://fedoraproject.org/wiki/Features/tmp-on-tmpfs  (mitr, 17:40:06)
> >   * AGREED: tmp-on-tmpfs is accepted (+5 -3)  (mitr, 18:12:52)
> 
> Actually I think this is a good feature, but ...

 +1

> The feature page is wrong about "The user experience should barely
> change.  This is mostly a low-level change that has little visibility
> to the user."
> 
> tmpfs is different in a number of important ways:
> 
>  - it's very limited in space compared to a real disk
> 
>  - it doesn't support O_DIRECT
> 
>  - it doesn't support user extended attrs; and not very old kernels
>    didn't support any xattrs at all, meaning things like SELinux
>    labels don't work

   - quota, the generic tmpfs problem...


    Karel

-- 
 Karel Zak  <kzak at redhat.com>
 http://karelzak.blogspot.com