Initial NFS access very slow
David-Paul Niner
dpniner at dpniner.name
Sun May 7 22:48:44 UTC 2006
On Sun May 7 2006 5:30 pm, Aaron Konstam wrote:
> > I've seen that sort of behavior in the past on a RHEL 4ES box. Nothing
> > too beefy, but adequate enough--1gig uni-proc 2.4gig machine, IDE all the
> > way, with only a single client connected.
> >
> > The delay from the initial `ls` and the file listing can be as long as
> > ten-seconds. It seems to only happen (for me) when mounting a
> > subdirectory of an exported file system. In otherwords, I'll export
> > /a/sample/directory from the server, but I'll be mounting
> > /a/sample/directory/further/below on the client.
> >
> > This is fairly common scenario, of course, when automounting /home
> > directories using autofs.
> >
> > There may be some options one could change in the fstab file to fix this;
> > It happens so infrequently that I haven't bothered to research it any
> > further.
> >
> > DP
>
> Well two things come to mind. If you rely on automounting the delay
> might be expected on the first access. I think mounting a different
> directory then you are exporting should work but I owuld not be
> surprised at delays in access but I would not think that hte first time
> would be any different the second time.
>
> Are you automounting the exported directory? We have not tried nfs
> mounts to our clients in FC5 yet but we had no trouble in any of the
> other distributions except on infrequent occasions when the server had
> unexpectedly gone down and then came up. That often required a reboot
> for the nfs to re-connect.
> --
> Aaron Konstam <akonstam at sbcglobal.net>
The initial delay was after the user had logged in, at which point the
directory would have all ready been mounted. I always chalked it up as some
sort of networking issue. I never saw this happen on RHEL 3 or any earlier
versions (RHEL,RH, or Fedora), and as I said it was spurious.
I'm not incredibly well-informed about the internals of NFS as it normally
just works for me.
Still interested in the OP's issue and the solution, if only out of curiosity.
Thanks,
DP
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