ITEM: R5267L

Can't restore a single file from a sysback full system backup remotely

Question:

Response:

Env:
     AIX 3.2.5
     Sysback 3.1.0.34

Desc:  
        Customer did a full system backup to a remote device 
        using the sysback command with this syntax
        sysback -f /dev/rmt0 -h \ 
    
        and is trying to just restore a single file from this 
        backup.  The backup is in rootvg part of the tape and she
        does it through smit:

        smitty sysback
          Backup & Restore Options 
             Full System (Installation Image)
              Restore Files from Full System Backup 

          And get the following error message:
          Not in compressed format 
          No writer on input pipe

        Also the customer tries running this from the
        command line:
        sysrestore -f/dev/rmt0 -h \ -v rootvg ./files
        Gets the same error message as above.

        This is after it sees the header file and is actually 
        trying to retrieve the file.  

Action:
  
  First get the block size of the fifth image which is the 
  rootvg data

  1.  login into the server as root
       (where the tape drive is located at)
  2.  chdev -l rmtX -a block_size=512
  3.  tctl -f /dev/rmtX rewind
  4.  cd /
  5.  restore -s4 -xvqf /dev/rmtX.1 ./tmp/...blksz
  6.  cd /tmp
  7.  cat ...blksz   (contains the block size of the fifth 
                      sixth ... images)
  8.  chdev -l rmtX -a block_size=\

  Now read the header information on the 5th image which is
  the rootvg image on this tape

   9. tctl -f /dev/rmtX rewind
  10. tctl -f /dev/rmtX.1 fsf 4
  11. sbread -H /dev/rmtX.1
         This should give the stat information on the image
         The PACK will be either Y or N  

  12.  If Y then do this:
       sbread /dev/rmtX.1 | sbuncomp | restore -Tvqf-

       If N then do this:
       sbread /dev/rmtX.1 | restore -Tvqf-

     This worked for the customer
     After looking in the sysrestore script I found this to be
     a bug with the sysrestore script.

Response:

  It is a bug with sysrestore script
  The customer can do this to fix the problem

  On the client and server do this:
  cd /usr/sbin
  vi sysrestore

      Go to line 390
      Delete this line:
      "/usr/sbin/sbuncomp | \\"

  Also you can send the fix to the customer
  sysback ver 3.1.0.40 or higher


Response:

Electronic Response by Customer Barry Switzer

This is just a test of appending an item.



Support Line: Can't restore a single file from a sysback full system backup remotely ITEM: R5267L

Dated: February 1995 Category: N/A

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