`/etc/init.d/nfs-kernel-server status` fails to report when nfs-kernel-server is stopped

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root@boot1:/etc/init.d# lsb_release -rd
Description: Ubuntu 8.04.3 LTS
Release: 8.04
root@boot1:/etc/init.d# apt-cache policy nfs-kernel-server
nfs-kernel-server:
  Installed: 1:1.1.2-2ubuntu2.2
  Candidate: 1:1.1.2-2ubuntu2.2
  Version table:
 *** 1:1.1.2-2ubuntu2.2 0
        500 http://archive.ubuntu.com hardy-updates/main Packages
        500 http://security.ubuntu.com hardy-security/main Packages
        100 /var/lib/dpkg/status
     1:1.1.2-2ubuntu2 0
        500 http://archive.ubuntu.com hardy/main Packages
root@boot1:/etc/init.d# /etc/init.d/nfs-kernel-server start
 * Exporting directories for NFS kernel daemon... [ OK ]
 * Starting NFS kernel daemon [ OK ]
root@boot1:/etc/init.d# /etc/init.d/nfs-kernel-server status
nfsd running
root@boot1:/etc/init.d# /etc/init.d/nfs-kernel-server stop
 * Stopping NFS kernel daemon [ OK ]
 * Unexporting directories for NFS kernel daemon... [ OK ]
root@boot1:/etc/init.d# /etc/init.d/nfs-kernel-server status
nfsd running

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This is obviously incorrect. More-over, it means that this script cannot be properly used with heartbeat, as heartbeat will think that the resource is always running and therefore will not execute it on take-over.

The problem lies in the /etc/init.d/nfs-kernel-server script, where it uses `pidof nfsd` to check for running nfs-servers. The command `/etc/init.d/nfs-kernel-server stop` fails to stop the NFSd kernel servers, and therefore `pidof nfsd` always returns true. Suggested fix is to change `pidof nfsd` to be `pidof rpc.mountd`.