Why can't my NFS client see nested mounts on the NFS share?

Solution Verified - Updated -

Issue

  • NFS server shares out filesystem with nested mount:
    [root@nfsserver ~]# cat /etc/exports 
/nfsshare *(rw,sync)

[root@nfsserver ~]# ls -laR /nfsshare/
/nfsshare/:
total 12
drwxr-xr-x   3 root root 4096 Apr  1 15:56 .
dr-xr-xr-x. 28 root root 4096 Apr  1 15:07 ..
drwxr-xr-x.  3 root root 4096 Apr  1 15:57 nested_mount

/nfsshare/ext3:
total 24
drwxr-xr-x. 3 root root  4096 Apr  1 15:57 .
drwxr-xr-x  3 root root  4096 Apr  1 15:56 ..
-rw-r--r--  1 root root     0 Apr  1 15:57 HelloWorld.c

[root@nfsserver ~]# mount | grep nested_mount
/dev/mapper/VolGroup01-LogVol01 on /nfsshare/nested_mount type ext4 (rw)
  • after mounting exported share on NFS client, client doesn't see what's on nested mount
    [root@nfsclient /]# ls -l /nfsshare/nested_mount/
total 0

Environment

  • Red Hat Enterprise Linux (All versions)
  • NFS (All versions)

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