Recovering Volume Manager after upgrading

1. # boot cdrom -sw
2. # mount /dev/dsk/c0t0d0s0 /a (to mount root filesystem)
3. Edit /a/etc/system
   
   Use * to block lines between VXVM BEGIN and VXVM END

       NOTE: There might be a file /a/etc/system.prevm
             That could be used. The lines look like the following: 
             *rootdev:/pseudo/vxio@0:0 
             *set vxio:vol_rootdev_is_volume=1
       

4. Edit /a/etc/vfstab
   
   Comment out which is related to Volume Manager
   
   a) Using vfstab, change root device to system's root disk
   
   /dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 / ufs 1 no -
   
   #NOTE: volume rootvol (/) encapsulated partition c0t0d0s0
   
   Recover other volumes the same way for /usr, /opt, etc.
   
   
5. format c0t0d0
   
   Recover all slices.
   Refer to /etc/vx/reconfig.d/disk.d/cxtydz/vtoc for original config.
6. Mount all slices to check.

       # mount /dev/dsk/c0t0d0s0 /a 
       # mount /dev/dsk/c0t0d0s6 /a/usr 
       # mount /dev/dsk/c0t0d0s3 /a/var 
       # ...
       

7. Boot into multi-user mode.
   
   # init 6
   
   
8. Remove patch and package for vm
   
   # pkgrm SUNWvxva
   # pkgrm SUNWvxvm
   
   
9. Remove existing drivers for Volume Manager
   
   # rm /kernel/drv/*vx*
   
   
10. cd /etc/vx and delete everything except /etc/vx/elm
11. Move Volume Manager directory.
    
    # mv /VX* /old.VX*
    
    
12. Upgrade OS.
13. Reinstall vm package
    
    pkgadd SUNWvxva
    pkgadd SUNWvxvm
    required patches
    
    
14. Run Volume Manager and recover root volume
    

        # rm /etc/vx/reconfig.d/state.d/install-db 
        # vxiod set 10 
        # vxconfigd -m disable 
        # vxdctl init 
        # vxdctl enable 
        # vxdiskadm (select option 2)
        

15. Mirror root disk again.