NFS FILE LOCKING.

ITEM: RTA000038025



                                                                                
                                                                                
                                                                                
QUESTION:                                                                       
Is mandatory file locking supported with AIX NFS (Network Lock Manager)?        
                                                                                
Specifically, will files that appear locked from one workstation (Sun)          
appear to be locked from an RS/6000 and vice versa.                             
                                                                                
Also, the RS/6000 should honor the level of locking on the Sun workstati        
and vice versa.                                                                 
                                                                                
ONC's Network Lock Manager apparently has this functionality, do we?            
                                                                                
---------- ---------- ---------- --------- ---------- ----------               
A: Unfortunately, AIX NFS does not support mandatory file locking.  It          
   only supports the lockf() and fcntl(), System V style of advisory            
   file locking which implements record level locking as opposed to             
   merely file level locking.                                                   
                                                                                
   If the Sun systems are using advisory locking, then the AIX programs         
   will recognize the file lock.  However, they will not recognize              
   mandatory locks.                                                             
                                                                                
   Also, AIX NFS will honor the level of locking on the Sun since AIX NFS       
   uses the standard UNIX implementation of record level locking.               
                                                                                
---------- ---------- ---------- --------- ---------- ----------                
                                                                                
                                                                               
This item was created from library item Q651292      CPDLF                      
                                                                                
Additional search words:                                                        
COMMUN COMMUNICATIO CPDLF FEB94 FILE FILES IX LOCKING NFS OZNEW RISC            
RISCOC RISCSYSTEM SOFTWARE                                                      
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                               


WWQA: ITEM: RTA000038025 ITEM: RTA000038025
Dated: 01/1995 Category: RISCOC
This HTML file was generated 99/06/24~12:43:14
Comments or suggestions? Contact us