Mirroring an AIX volume group

逃离我推掉我的手 2023-10-07 08:29 16阅读 0赞

1.  configure additional disks (if not yet recognized)
    
        smit -C
          Devices - Install/Configure Devices Added After IPL
2.  add disks to existing VG's
    
        smit -C
          System Storage Management - LVM - Volume Groups - Set Characteristics ... - Add a Physical Volume to a Volume Group
3.  Mirror the volume group,
    
     *  Method 1 (traditional), by LV
        
            smit -C
              System Storage Management - LVM - Logical Volumes - Set Characteristics ... - Add a Copy to a Logical Volume
        
        selection list via F4 key. (for `rootvg` the LVs `hd6,hd8,hd4,hd2,hd9var,hd3,hd1,...` have to be selected, unfortunately one after the other separately. `hd5` **must not** be mirrored this way) Fill the following entries and submit:
        
            NEW TOTAL number of logical partition               2
              SYNCHRONIZE the data in the new                     yes
                          logical partition copies?
        
        Be patient, this might take some time because data has to be copied to the mirror disk.  
        For a `rootvg` (only) the mirror copy must be made bootable
        
            mklv -y hd51 -t boot -a e rootvg 2 hdiskx
              bosboot -a -l /dev/hd51 -d /dev/hdiskx
              bootlist -m normal hdisky hdiskx
        
        where `hdiskx` is the additional physical volume holding the mirror and `hdisky` the original (x,y = 0..n )
     *  Method 2 (new, faster), by VG
        
            smitty 
              System Storage Management - LVM - Logical Volumes -  Volume Groups - Mirror a Volume Group
              PHYSICAL VOLUME names       [hdiskx]
              Number of COPIES            2
        
        Be patient, this might take some time because data has to be copied to the mirror disk. As suggested, for a `rootvg` (only) the mirror copy must be made bootable
        
            bosboot -a -l /dev/hd5 -d /dev/hdiskx
              bosboot -a -l /dev/hd5 -d /dev/hdisky
              bootlist -m normal hdisky hdiskx
4.  Switch off the disk quorum for the volume group.
    
        smit -C
          System Storage Management - Volume Groups - Set Characteristics ... - Change a Volume Group
    
    selection list via F4 key. Fill the following entries (example for `tkrvg`) and submit.
    
        * VOLUME GROUP name                                   tkrvg
          * Activate volume group AUTOMATICALLY                 yes                     +
              at system restart?
          * A QUORUM of disks required to keep the volume       no                      +
             group on-line ?
5.  Ensure synchronization of mirror and original, e.g.:
    
        syncvg -v rootvg
          syncvg -v  tkrvg