Description of problem:
Say I have a directory /export:

/export
  /disc1
  /disc2

Where /disc1 and disc2 have been mounted as such:

mount -o loop,ro /root/disc1.iso /export/disc1
mount -o loop,ro /root/disc1.iso /export/disc1

And /export is exported as such:

/export   *(ro,sync,no_subtree_check,no_root_squash)

When a client mounts this directory:

# mount -t nfs host:/export /mnt
# cd /mnt
# ls -l

This operation takes a long time and eventually returns a directory listing. 
However, upon cd'ing to one of the subdirectories disc1 or disc2 these
directories show no contents.

It appears the only way is to explicitly export each directory (/export/disc1,
/export/disc2) separately.

This appears to be a bug:

  http://marc.info/?l=linux-nfs&m=119389121928817&w=2

Fixed here in 1.1.1-git:

 
http://git.linux-nfs.org/?p=steved/nfs-utils-exp.git;a=commitdiff;h=bfdc26916d8dabd319240a3ce5198b6189040be7

Questions:

  - Am I correct in stating that this is a bug?
  - Is the above mentioned fix feasible for backport to nfs-utils 1.0.6 in
RHEL4?  If so, I can open an SR to request having this done.

This issue also exists in RHEL5 (nfs-utils 1.0.9).  May open a separate bug for
that as well.