Description of problem:

The addition of the nosharecache option allows an admin to force the mounting of the same volume more than once with different options, but even then some options are bound to the internal NFS client for that server and cannot be changed. For example, on RHEL-5.3 it seems timeo, bg and proto are not changed in mounts after the first one. It is important that the manpage documents what really is shared by multiple mounts and what is not.

Version-Release number of selected component (if applicable):

nfs-utils-1.0.9-40.el5

How reproducible:

Always.

Steps to Reproduce:

# mount -o udp,nosharecache server:/export/nfs /mnt1

# mount -o tcp,nosharecache,timeo=123,rsize=8192,wsize=8192,soft server:/export/nfs /mnt2
  
Actual results:

# grep server /proc/mounts 

server:/export/nfs /mnt1 nfs rw,vers=3,rsize=32768,wsize=32768,hard,nosharecache,proto=udp,timeo=11,retrans=2,sec=sys,addr=server 0 0

server:/export/nfs /mnt2 nfs rw,vers=3,rsize=8192,wsize=8192,soft,nosharecache,proto=udp,timeo=11,retrans=2,sec=sys,addr=server 0 0

Notice proto, timeo.

Expected results:

Documentation states correctly what is always shared and what is not, so that an admin can know what to expect.