NOT ENOUGH SPACE TO INSTALL PTF U407799

ITEM: RTA000028869



I am trying to install PTF U407799 on my system.  It is a 320H with             
2 400MB disk drives at AIX 3.2.0.  When I try to apply the PTF, I               
get a message that I need 79,102 kb blocks.  I don't have that much             
area that I can give up permanently.  Is there some way I can use               
one of my application filesystems temporarily?  I have instructions             
that for AIX 3.1.6 allowed me to decrease the size of /usr.  If I               
applied the PTF would I be able to use this method to get back some             
disk area.  Also I have 3.2.2 to install, am I going to run into the            
same problem doing that.                                                        
P.S.  Why is this PTF so large?                                                 
                                                                                
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A: Here are some things for you to look at:                                     
                                                                                
o  When you install a Program Temporary Fix (PTF) via the System               
   Management Interface Tool (SMIT), there are several menu options which       
   could be selected/modified to reduce the space requirements of the PTF       
   during it's installation.  When you install a PTF with the default           
   settings via SMIT, a backup copy of all of the code and data files           
   that the PTF replaces is made.  These backup files allow the system          
   administrator to reverse the installation of a PTF (if desired) and          
   provide a level of insurance during the installation of a PTF by             
   saving all data and code that is being replaced.  These backup               
   copies make it easier to recover should the installation of a PTF            
   fail in process because of power failure, for example.                       
                                                                                
   By selecting and modifying the appropriate SMIT menu options, you            
   can force the install process to:                                            
                                                                                
    1)  Force the PTF into the COMMIT status.                                  
    2)  Remove the backup copies of the replaced files/code.                    
                                                                                
   The result of this is that the PTF requires only slightly more room          
   than that which already exists, rather than double or even triple that       
   amount.                                                                      
                                                                                
   The smit menu options you can change to achieve this when installing         
   a PTF are:                                                                   
                                                                                
   COMMIT software?                          .yes.                              
   SAVE replaced files?                      .no.                               
                                                                                
   Notice that the above example SMIT selections show that you                  
   want to commit the software, and that you do not want to save                
   the replaced files.  This should dramatically reduce the space              
   requirements for the installation of any PTF.                                
                                                                                
o If you have installed many PTFs and LPPs, it is possible that                 
  there are a large number of backup files from those installations             
  that still exist.                                                             
                                                                                
  These backup files can be found in the following directories:                 
                                                                                
                     /usr/lpp//inst_U40XXXX                           
                                                                                
                     /usr/lpp//deinstl                                
                                                                                
  Where  can be replaced with things like: "pcsim" or "bos"           
  and "inst_U40XXXX" is a PTF number such as "inst_U401234".                    
                                                                               
  These files exist so that a PTF or LPP can be removed.                        
  Their contents are those data and code that the new PTFs and                  
  LPPs have replaced.  In order to remove an LPP or PTF                         
  that you do not want, you have to have the original code and                  
  data that they replaced.  These files are no longer necessary                 
  once their respective LPPs and PTFs are in the COMMITted state.               
  They can be removed once their respective LPPs or PTFs are                    
  COMMITted.  WARNING˘˘˘˘˘  DO NOT REMOVE ANY OF THESE FILES ON                 
  ON A SYSTEM THAT IS INTENDED FOR USE AS A "/USR" SERVER.  THESE               
  FILES ARE ABSOLUTELY NECESSARY FOR THE CREATION OF "/USR" CLIENTS.            
                                                                                
  If you have many of these files, you will notice that they often              
  take up as much as 1-5 MB each.  The removal of these files will              
  save you a tremendous amount of room.                                         
                                                                               
o I am not sure which instructions you are referring to when you say            
  there is a method to reduce the /usr filesystem. If you are referring         
  to a method that does the following steps, then it is safe to use,            
  if necessary, to reduce the amount of space taken up in /usr:                 
                                                                                
  1)  Do a mkszfile.                                                            
  2)  Edit the /.fs.size file and specify a smaller number of physical          
      partitions for the root volume group.                                     
  3)  Do a mksysb using this modified .fs.size file.                            
  4)  Restore the system from this mksysb tape.                                 
                                                                                
  If this is not the method you are referring to, please reopen this            
  item with a description of the method you are referring to, and I will        
  be happy to assist you further.                                               
                                                                               
o The PTF you mentioned is not large.  It, along with all of it's               
  prerequisites, will fit onto a single diskette.  The space requirement        
  stems from the fact that this particular PTF involves a large number          
  of files in the /usr directory.                                               
                                                                                
Source:  AIX 3.2 "Installation Guide" (SX23-0800-00).                           
                                                                                
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This item was created from library item Q618303      1SLDW                      
                                                                                
Additional search words:                                                        
CUSTORG INSTALL INSTALLATION IRRISC IX JAN93 NON PTF RISC SPACE                 
SPACING U407799 1SLDW                                                          


WWQA: ITEM: RTA000028869 ITEM: RTA000028869
Dated: 11/1996 Category: RISCINST
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