Subject: Re: nfs client performance while server is down
From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Whoop Whouzer <tiredandnumb@gmail.com>
Cc: Chuck Lever <chuck.lever@oracle.com>,
        "J. Bruce Fields" <bfields@fieldses.org>,
        "Muntz, Daniel" <Dan.Muntz@netapp.com>,
        Peter Chacko <peterchacko35@gmail.com>, linux-nfs@vger.kernel.org
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Date: Wed, 27 Jan 2010 14:09:32 -0500
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So? I don't see why that would be an NFS problem.

As far as I can see from this thread, you are basically asking us to fix
these broken applications by implementing a "disconnected NFS" mode.
While that may indeed be a cool thing to support, I haven't seen anybody
so far stepping up and saying that they have the time and resources to
work on it. Are you volunteering?

Trond

On Wed, 2010-01-27 at 19:47 +0100, Whoop Whouzer wrote: 
> ok, but it's not just GNOME/nautilus behaviour. For one, I am
> experiencing problems with just about all applications that require
> (local) disk access. Furthermore, problems have also been reported
> with xfce/thunar and also with KDE.
> 
> A bug for this issue has just been created for xfce/thunar:
> http://bugzilla.xfce.org/show_bug.cgi?id=6185
> 
> On Wed, Jan 27, 2010 at 7:40 PM, Trond Myklebust
> <trond.myklebust@fys.uio.no> wrote:
> > On Wed, 2010-01-27 at 13:23 -0500, Chuck Lever wrote:
> >> On 01/26/2010 06:21 PM, J. Bruce Fields wrote:
> >> > I wonder if nautilus (or some library it uses) likes to regularly
> >> > "statfs" all the filesystems it knows about?
> >>
> >> The NFS client seems to like to send these periodically, but I've never
> >> looked into why.  It's probably triggered by some cache timeout, and
> >> gathers recent server file system information.
> >
> > No. It is entirely application driven. Furthermore, most of the statfs
> > data is uncached, since it should not be performance critical in any
> > sane application environment.
> >
> > IOW: I agree with Bruce that this is most likely GNOME or nautilus
> > triggering statfs calls. Indeed, when I do actually open a window on
> > some directory it also appears to display the free space.
> >
> > Trond
> >
> >
> >