01/23/96, 4FAX# 1897
 
  Tips on mksysb for AIX 3.2 to 3.2.3e
 
 
 
  SPECIAL NOTICES
 
       Information in this document is correct to the best of our
       knowledge at the time of this writing.  Please send feedback
       by fax to "AIXServ Information" at (512) 823-4009.
 
       Please use this information with care.  IBM will not be
       responsible for damages of any kind resulting from its use.
       The use of this information is the sole responsibility of
       the customer and depends on the customer's ability to eval-
       uate and integrate this information into the customer's
       operational environment.
 
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       | NOTE:  The information in this document is NOT appli-    |
       | cable for AIX 4.1.                                       |
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       +----------------------------------------------------------+
 
 
  ABOUT THIS DOCUMENT
 
       This document is a collection of tips on the use of mksysb
       in AIX 3.2.
       Considerations Before Backing Up With mksysb   . . . . .   2
       Backing Up the the System Disk in AIX 3.2  . . . . . . .   2
         Verifying the mksysb Backup  . . . . . . . . . . . . .   3
       Troubleshooting Tips   . . . . . . . . . . . . . . . . .   3
       Doing a mksysb to a Networked File System  . . . . . . .   4
       Known Software Defects With mksysb Prior to AIX 3.2.4  .   4
       Common Configuration and Setup Errors  . . . . . . . . .   6
       About Blocksize  . . . . . . . . . . . . . . . . . . . .   7
       About Density and rmtX.Y   . . . . . . . . . . . . . . .   7
       Reading/Restoring a File from a mksysb Tape  . . . . . .   8
       Installing a System from a mksysb Tape   . . . . . . . .   9
       Faxing a Problem Report and Ordering a Fix Tape  . . . .  10
       Reader's Comments  . . . . . . . . . . . . . . . . . . .  12
 
       For information on the limitations of mksysb restoration,
       order fax number 2769 from 1-800-IBM-4FAX.
 
       For information on saving and restoring acl and tcb attri-
       butes, order fax number 2685 from 1-800-IBM-4FAX.
 
       ATTENTION READERS OUTSIDE THE U.S.:  You can order the above
       faxes and others mentioned later in this document by calling
       415-855-4FAX from a fax machine phone.
 
 
 
 
 
 
 
 
 
 
 
  CONSIDERATIONS BEFORE BACKING UP WITH MKSYSB
       o   If the ksh option "noclobber" is set, mksysb will fail
           in the BOSboot section.
  BACKING UP THE THE SYSTEM DISK IN AIX 3.2
 
 
          smit -C startup
          mkszfile && mksysb /dev/rmtX.Y 2>&1 | tee /tmp/mksysb.out
 
       complete backup of all the JFS mounted file systems in the
       ROOTVG volume group.
       NOTE:  If you have more than one volume group (use "lsvg" to
       check), you must use one of the backup commands (backup,
       mksysb only backs up the rootvg volume group.
 
       completely rebuild your system or to recover one or more
       files.  It backs up everything in the rootvg volume group,
       contains device configuration data.
 
 
       1.  Log in as the "root" user
       2.  Type:  "smit -C startup"
       3.  Select:  "Backup the System"
 
       You will be asked to fill in the following screen: