[Linux-cluster] NFS Exports in rgmanager

Lon Hohberger lhh at redhat.com
Thu Sep 27 19:35:30 UTC 2007

On Tue, 2007-09-25 at 06:33 -0600, Nick Couchman wrote:
> I'm attempting to set up fail-over NFS services on my RHCS cluster and
> have a question about the NFS export and NFS client resources.  In our
> environment, we have a few occasions where we don't want to export the
> entire volume to a client, we just want to export a certain directory
> on the volume.  So, for example, by default, when you set up a GFS
> Filesystem (let's say it's mounted at /mnt/Vol1), an NFS export
> resource (we'll call it Share1), and an NFS Client Resource (client1
> with options rw,root_squash), the entire contents of /mnt/Vol1 is
> exported to the client.  In our case, we have a directory
> - /mnt/Vol1/Dir1/ThisDirectory - that we need to export to a client,
> and we only want the client to have access to that directory.  Is this
> possible in rgmanager?  If so, how do I go about it?  If not, can
> someone suggest some alternatives, aside from completely manually
> managing the NFS stuff with RHCS?  If the answer to that is that I
> must do it manually, maybe someone can consider adding in a
> "Directory" resource to rgmanager?

Yes, just add a private nfsclient resource to the nfsexport and override
the path:

  <nfsclient path="whole-path-to-directory" .../>

Note that you can't reuse the nfsclient resource if you do this (it
breaks inheritance).

-- Lon

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