Re: Is order for "exportfs -r" and rpc.mountd important?

["J. Bruce Fields" <bfields@fieldses.org>]

On Fri, Nov 28, 2008 at 05:05:44PM +0100, Dr. Tilmann Bubeck wrote:
> To be more precise: the order between "exportfs -r" and "modprobe nfsd" is 
> important (and not "exportfs -r" and "rpc.mountd").

So, I'm confused: what are the before-and-after orders of all three
(modprobe, exportfs, and rpc.mountd)?

> 
> Am Freitag, 28. November 2008 15:41:38 schrieb Dr. Tilmann Bubeck:
> > According to manual page "exportfs -r" has two modes: legacy and new.
> > Fedora 10 seems to use the new mode and mounts /proc/fs/nfsd.
> >
> > But they use the following order in /etc/init.d/nfs:
> >   exportfs -r
> >   rpc.mountd
> >
> > This results in /proc/fs/nfsd/exports having all obsolete entries
> > from /var/lib/nfs/rmtab which causes a lot of trouble with stale NFS file
> > handles.

What problems exactly?

> > This seems to be wrong according to "man exportfs" in new mode.
> >
> > If I change the order to
> >   rpc.mountd
> >   exportfs -r
> >
> > then everything is OK and /proc/fs/nfsd/exports only contains the info
> > from /etc/exports and not all stale clients. This seems to be correct
> > according to "man exportfs" in new mode.
> >
> > Questions: is this behaviour a bug or at least bad? Shouldn't exportfs
> > being changed, so that when it detects "new" mode it will never feed rmtab
> > into the kernel and rely upon rpc.mountd answering the kernels questions as
> > stated in "man exportfs"?

That does sound wrong.

Perhaps rmtab should also be cleared on exportfs -r?  I don't really
understand how rmtab should work.

--b.

> >
> > If yes, then the order or the programs is irrelevant.
> > If not, should the order of the programs be reversed in Fedora?
> >
> > Thanks
> >  Till
> 
> 
> 
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