Upgrade Proceedure

1. Take SCSI chain 2 mirror components offline.

   	
   	metaonline d0 d2
   	metaonline d10 d12
   	metaonline d20 d22
   	metaonline d30 d32
   	metaonline d40 d42
   	metaonline d50 d52
   	metadb -a /dev/dsk/c2t2d0s7
   	
   

2. Halt brick
3. Remove frame buffer card and insert new SCSI card
4. Add new drives to SCSI chain, do a probe SCSI to make sure they can be seen.
5. Boot -rs
6. If all is well with SCSI chain 2 bring mirrors back on line:

   	
   	metaonline d0 d2
   	metaonline d10 d12
   	metaonline d20 d22
   	metaonline d30 d32
   	metaonline d40 d42
   	metaonline d50 d52
   	metadb -a /dev/dsk/c2t2d0s7
   	
   

7. Partition new drives to have two partitions slice 0 for data slice 7 for metadb replicas.
8. Create a metadevice to stripe each of these new disk packs. Add these lines to /etc/opt/SUNWmd.tab

   	
   		d53 1 2 /dev/dsk/c0t0d0s0 /dev/dsk/c0t1d0s0
   		d54 1 2 /dev/dsk/c2t0d0s0 /dev/dsk/c2t1d0s0
   	
   	

   Then run the commands:

   		
   		metainit d53
   		metainit d54
   		
   	

9. Add d53 as a mirror component of d50 using command

   		
   		metattach d50 d53
   		
   	

10. Wait till the resync operation is complete.
11. Detach the old /home drives using the commands:

    		
    		metadetach d50 d51
    		metadetach d50 d52
    		
    	

    This will leave /home as a one way mirror on the old drives.
12. Grow the /home file system to fill the new 'drive' using the command:

    		
    		growfs /dev/md/rdsk/d50
    		
    	

13. Add d54 as a mirror component of d50 using command:

    		
    		metattach d50 d54
    		
    	

14. Wait for resync operation to complete. At this point we are running a two way mirror on the new drives and the old drives are no longer in use for /home but still have meta database replicas.
15. Remove the metadevice definitions for the /home partitions on the old drives:

    		
    			metaclear d51
    			metaclear d52
    		
    	

16. Add metadb replicas on the new drives. Only one replica per drive, root disk will still have two but this should not be a problem.

    		
    			metadb -a  /dev/dsk/c0t0d0s7
    			metadb -a  /dev/dsk/c0t1d0s7
    			metadb -a  /dev/dsk/c2t0d0s7
    			metadb -a  /dev/dsk/c2t1d0s7
    		
    	

17. Remove the database replicas from the old drives:

    		
    			metadb -d /dev/dsk/c0t2d0s7
    			metadb -d /dev/dsk/c2t2d0s7
    		
    	

18. Halt brick and remove old drives from SCSI chains.
19. Reboot with -r option.
20. Update http:www.usyd.edu.au/~stephen/sna/sna.html to show partition table for new drives and meta device configuration.

Upgrade Proceedure for addition of 2nd SCSI card - if things go wrong look here -

The complication here is that when a new SCSI card is install the reboot -r may change the designation of the two SCSI cards, with consequent mirroring problems. To safe guard against problems all the mirror components on SCSI controler 2 should be offlined before installing the card. Since 4 out of 8 database replicas will be available even in the worse case it should be possible to boot, we can make doubly sure of this by deleteing the replica on one of the new drives on chain 2, thus ensuring that we have 4 out of 7 replicas available at boot. Here is the command sequence:

	
	metaoffline d0 d2
	metaoffline d10 d12
	metaoffline d20 d22
	metaoffline d30 d32
	metaoffline d40 d42
	metaoffline d50 d54
	metadb -d /dev/dsk/c2t1d0s7
	

• The card which is presently SCSI 2 remains SCSI 2, in which case all that needs to be done is to bring the mirror components back on line:

  	
  	metaonline d0 d2
  	metaonline d10 d12
  	metaonline d20 d22
  	metaonline d30 d32
  	metaonline d40 d42
  	metaonline d50 d54
  	metadb -a /dev/dsk/c2t1d0s7
  	
  

• The new card becomes SCSI 2, in this case we can just move the cables to the new card, reboot -r again and then bring the components back on line as above.

• SCSI 2 dissappears and the devices appear on SCSI x. If this happens we will need to use metareplace to change the scsi id's, this will involve a resync of the submirror since their is now way to tell Disksuite that the component has simply moved. If metareplace will not do what we want then the alternative is to forceably detach the all these components and then recreate them and use metattach to hook them back into the mirrors.

  Replace method

  	
  	metadb -d /dev/dsk/c2t0d0s7
  	metadb -a /dev/dsk/cXt0d0s7
  	metadb -d /dev/dsk/c2t3d0s7
  	metadb -a -c 2 /dev/dsk/cXt3d0s7
  
  	metareplace d0 /dev/dsk/c2t3d0s0 /dev/dsk/cXt3d0s0
  	metareplace d10 /dev/dsk/c2t3d0s1 /dev/dsk/cXt3d0s1
  	metareplace d20 /dev/dsk/c2t3d0s3 /dev/dsk/cXt3d0s3
  	metareplace d30 /dev/dsk/c2t3d0s5 /dev/dsk/cXt3d0s5
  	metareplace d40 /dev/dsk/c2t3d0s6 /dev/dsk/cXt3d0s6
  	metareplace d50 /dev/dsk/c2t0d0s0 /dev/dsk/cXt0d0s0
  	metareplace d50 /dev/dsk/c2t1d0s0 /dev/dsk/cXt1d0s0
  	
  

  Long Method

  	
  	 metadb -d /dev/dsk/c2t0d0s7
  	 metadb -a /dev/dsk/cXt0d0s7
  	 metadb -d /dev/dsk/c2t3d0s7
  	 metadb -a -c 2 /dev/dsk/cXt3d0s7
  
  	 metadetach -f d0 d2
  	 metadetach -f d10 d12
  	 metadetach -f d20 d22
  	 metadetach -f d30 d32
  	 metadetach -f d40 d42
  	 metadetach -f d50 d54
  	 metaclear d2
  	 metaclear d12
  	 metaclear d22
  	 metaclear d32
  	 metaclear d42
  	 metaclear d54
  	 
  	 
  	 Edit /etc/opt/SUNWmd/md.tab adding entries:
  	
  		/dev/md/dsk/d2 1 1 /dev/dsk/cXt3d0s0
  		/dev/md/dsk/d12 1 1 /dev/dsk/cXt3d0s1
  		/dev/md/dsk/d22 1 1 /dev/dsk/cXt3d0s3
  		/dev/md/dsk/d32 1 1 /dev/dsk/cXt3d0s5
  		/dev/md/dsk/d42 1 1 /dev/dsk/cXt3d0s6
  		d54 1 2 /dev/dsk/cXt0d0s0 /dev/dsk/cXt1d0s0
  	
  	metainit d2
  	metainit d12
  	metainit d22
  	metainit d32
  	metainit d42
  	metainit d54
  
  	metattach d0 d2 Wait for resync to complete
  	metattach d10 d12 Wait for resync to complete
  	metattach d20 d22 Wait for resync to complete
  	metattach d30 d32 Wait for resync to complete
  	metattach d40 d42 Wait for resync to complete
  	metattach d50 d54 Wait for resync to complete