Re: NIM: Initiate mksysb create from client???

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Date: 03 May 2004 16:26:30 GMT

Here is a tool you can use to re-create a boottable tape from a mksysb file.

1) have the "mksysb-generated" file on one server of the same
hardware & sofware as the one to restore (same server is better).

# Start of script (call it as you want e.g. mk_sysb_tape)
#!/usr/bin/ksh

if [[ "H$1" = H-x ]] then
  extract=1
  shift
else
  extract=0
fi

if [[ "H$1" = H+e ]] then
  eject=0
  shift
else
  eject=1
fi

TAPE=${2:-rmt0}

if [[ ! -f $1 || ! -r $1 || ! -w /dev/$TAPE.1 ]] then
  echo "Usage: $0 [-x] [+e] mksysb_file [tape drive]"
  exit 1
fi

Rc=0

# If asked, get /image.data and /bosinst.data
if (( $extract == 1 )) then
    cd /
    restore -xqvf $1 ./image.data || Rc=1
    (( Rc == 0 )) && { restore -xqvf $1 ./bosinst.data || Rc=2; }
    cd $OLDPWD
fi

# boot waiting a block_size of 512, we set it to 512 if not the case
Bl=$(lsattr -EL $TAPE -a block_size -F value)
if (( $Bl != 512 )) then
  Bl_change=1
  chdev -l $TAPE -a block_size=512
else
  Bl_change=0
fi

# Here we go
(( Rc == 0 )) && { bosboot -a -d /dev/$TAPE.1 || Rc=3; }
(( Rc == 0 )) && { mkinstape /dev/$TAPE.1 || Rc=4; }
(( Rc == 0 )) && {
  echo "Dummy tape TOC" | dd of=/dev/rmt0.1 bs=512 conv=sync || Rc=5; }
(( Rc == 0 )) && { dd if=$1 of=/dev/$TAPE bs=1024 conv=sync || Rc=6; }

(( Rc == 0 && eject == 1 )) && mt -f /dev/rmt0 rewoffl

# Restore original block_size if changed
(( Bl_change == 1 )) && chdev -l $TAPE -a block_size=$Bl

exit $Rc

# End of script

Examples of use

   mk_sysb_tape /mksysb_backup_dir/mksysb_backup_file rmt1
   mk_sysb_tape -x /mksysb_backup_dir/mksysb_backup_file

OBS: Thanks to a IBM guy (whom I forgot the name) for writing the
     original scriptt.

Hope this will help.
Regards,
Stephane

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