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The RFS Model 


We'll demonstrate server-client resource sharing
under the RFS Model in the following diagram.
The RFS Model 

               CLIENT                            SERVER
                 /                                 /             
                 |                                 |           
            -----------                       -----------
           |           |                     |           |
           x           e                                 a 
                       |                                 |
                       |                            -----------
                       |                           |           |
                       f                                       b 
                                                               |
                                                          -----------
                                                         |           |
                                                         c
                                                         |
                                                    -----------
                                                   |           |
                                                 file
  First the SERVER advertises
  the resource (RSC) with
        adv RSC /a/b 
The RFS Model 

               CLIENT                            SERVER
                 /                                 /
                 |                                 |
            -----------                       -----------
           |           |                     |           |
           x           e                                 a   
                       |                                 |
                       |                            -----------
                       |                           |           |
                       f                                       b  
                                                               |
                                                          -----------
                                                         |           |
                                                         c
                                                         |
                                                    -----------
                                                   |           |
                                                 file
  Second, the CLIENT queries the
  network for available resources with:
            nsquery 
The RFS Model 

               CLIENT                            SERVER
                 /                                 /
                 |                                 |
            -----------                       -----------
           |           |                     |           |
                       e                                 a
                       |                                 |
                       |                            -----------
                       |                           |           |
                       f       ------------------------------->b 
                                                               |
                                                          -----------
                                                         |           |
                                                         c
                                                         |
                                                    -----------
                                                   |           |
                                                 file
  Third, the CLIENT mounts 
  the resource with:
     mount -d RSC /e/f 
The RFS Model 

               CLIENT                            SERVER
                 /                                 /
                 |                                 |
            -----------                       -----------
           |           |                     |           |
           x           e                                 a   
                       |                                 |
                       |                            -----------
                       |                           |           |
                       f                                       b 
                                                               |
                                                          -----------
                                                         |           |
                                                         c 
                                                         |
                                                    -----------
                                                   |           |
                                                 file 
  A user on the CLIENT machine
  looks at file with:
        cat /e/f/c/file 
The RFS Model 

               CLIENT                            SERVER
                 /                                 /
                 |                                 |
            -----------                       -----------
           |           |                     |           |
           x           e                                  a 
                       |                                 |
                       |                            -----------
                       |                           |           |
                       f                                       b 
                                                               |
                                                          -----------
                                                         |           |
                                                         c 
                                                         |
                                                    -----------
                                                   |           |
                                                 file 
  A user on the SERVER
  looks at file with:
      cat /a/b/c/file