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AIX: Mirroring rootvg
=======================================================
:Title:        AIX: Mirroring rootvg
:Author:       Douglas O'Leary <dkoleary@olearycomputers.com>
:Description:  How to mirror OS vg in AIX
:Date created: 06/2000
:Date updated: 07/2001
:Disclaimer:   Standard: Use the information that follows at your own risk.  If you screw up a system, don't blame it on me...

Although the steps to mirror volume groups between HP and AIX are incredibly 
similar, there are enough differences to send me through hoops if/when I ever 
have to do that. Therefore, the following checklist:

#. Mirror the logical volumes:

   a. If you don't care what disks the lvs get mirrored to, execute::

         mirrorvg rootvg

   b. Otherwise::

         for lv in $(lsvg -l rootvg | grep -i open/syncd | \
            grep -v dumplv | awk '{print $1}')
         do
            mklvcopy ${lv} 1 ${disk}
         done

#. Change the quorum checking if you did not use mirrorvg::

      chvg -Q n rootvg 

#. Run bosboot on the new drive to copy boot files to it::

      bosboot ${disk}

#. Update the bootlist with the new drive:

      bootlist -m normal hdisk0 hdisk1

#. Reboot the system to enable the new quorum checking parameter