ITEM: AC7491L

PROBLEMS RESTORING A FILE SYSTEM FROM A SYSBACK

Response:

  Customer is doing this:
  smitty sysback
    Backup and Restore Options
      Full System (Installation Image)
         Recreate a Logical Volume or Filesystem from Full System Backup

     It is failing with the following message:
        1800-034: Exit status: Return by command.

This is a known bug with sysback ver 3.1.0.18 and below

19    8/26/94   PROBLEM:
                Recreating volume groups or logical volumes from a Full
                System backup via SMIT does not execute command correctly.
                The device name and hostname (if any) are not being
                added to the command to execute.

                SOLUTION:
                Fix applied. Device name, hostname and device for remote
                volume prompt now appear on the SMIT screen.

                WORKAROUND:
                Use the remakevg command from the command line instead
                of SMIT.

Sending out the most current version of sysback to customer.

Response:

  Env:  AIX 3.2.5
        sysback 3.1.0.27

Desc:  Cannot recreate a logical volume from a sysback full system
       backup.

  remakevg -Ff /dev/rmt0 -l lv00
Customer from the command line gets this error message:

Rewind /dev/rmt0
Reading Volume Group lable
Reading Table of Contents
The volume group information file contains no vesion Information

Action:
I had the customer do this:
tctl -f /dev/rmt0.1 fsf 4
sbread -T /dev/rmt0.1

The logical volume info was there from what the customer states.

Here is what a found to be the problem:
This customer most like from his call history was using 3.1.0.1 of
sysback.

Recent levels of sysback contain a new entry VER and REL level
of AIX.

Here is a work around if you need to restore this data.

In the file /usr/sbin/editvginfo
at this point in the file.

\# Get AIX Version
grep "\^VER" $VGINFO | read x VER REL
if [ -z "$VER" ]
   then msg 473 '\\007The volume group information file contains no version infor
mation!' >&2
        cancel 1
fi

Delete the lines from the "if" statement to the "fi" statement.

So you would have this 

\# Get AIX Version
grep "\^VER" $VGINFO | read x VER REL

A fix has been added to sysback ver 3.1.0.31

31   10/28/94   PROBLEM:
                Message "The volume group information file contains 
                no version information!" appears when attempting to
                recreate a VG or LV from a full system backup.

                SOLUTION:
                Fix applied. Same problem as \#27, but change needed to
                be applied to editvginfo program as well as remakevg.
                This problem will only occur when selecting to edit
                the attributes prior to recreating.

                WORKAROUND:
                Customer may manually remove check for "$VER" in
                /usr/sbin/editvginfo program or simply not select
                to view or change the information prior to creating.



Support Line: PROBLEMS RESTORING A FILE SYSTEM FROM A SYSBACK ITEM: AC7491L

Dated: October 1994 Category: N/A

This HTML file was generated 99/06/24~13:30:30

Comments or suggestions?
Contact us