To migrate dmpviosp6 from PowerPath to DMP

1. Before migrating, back up the Virtual I/O Server to use for reverting the system in case of issues.

   See the IBM website for information about backing up Virtual I/O Server.

2. Shut down all of the VIO clients that are serviced by the VIO Server.

   dmpvioc1$ halt

3. Log into the VIO server partition.Use the following command to access the non-restricted root shell. All subsequent commands in this procedure must be invoked from the non-restricted shell.

   $ oem_setup_env

4. Verify that the FC adapters have the recommended settings. If not, change the settings as required.

   For example, the following output shows the settings:

   dmpvios1$ lsattr -El fscsi0 
   attach       switch    How this adapter is CONNECTED  False
   dyntrk       yes       Dynamic Tracking of FC Devices True
   fc_err_recov fast_fail FC Fabric Event Error RECOVERY Policy
    True
   scsi_id      0xd0c00   Adapter SCSI ID                False
   sw_fc_class  3         FC Class for Fabric            True

5. The following command shows lsmap output before migrating PowerPath VTD devices to DMP:

   dmpvios1$ /usr/ios/cli/iosctl lsmap -all

   SVSA           Physloc                      Client Partition ID 
   -------------- ---------------------------- -------------------- 
   vhost0         U9117.MMA.0686502-V2-C11     0x00000004 
   
   VTD              P0 
   Status           Available 
   LUN              0x8100000000000000 
   Backing device   hdiskpower0 
   Physloc          U789D.001.DQD04AF-P1-C5-T1-W500507630813861A-L4
   0034037
   00000000 
   
   VTD              P1 
   Status           Available 
   LUN              0x8200000000000000 
   Backing device   hdiskpower1
   Physloc          U789D.001.DQD04AF-P1-C5-T1-W500507630813861A-L40
   0240C10
   0000000 
   
   VTD              P2 
   Status           Available 
   LUN              0x8300000000000000 
   Backing device   hdiskpower2
   Physloc          U789D.001.DQD04AF-P1-C5-T1-W500507630813861A-L40
   02409A00000000

6. Unconfigure all VTD devices from all virtual adapters on the system:

   dmpvios1 $ rmdev -p vhost0
   P0 Defined
   P1 Defined
   P2 Defined

   Repeat this step for all other virtual adapters.

7. Migrate the devices from PowerPath to DMP.

   Unmount the file system and varyoff volume groups residing on the PowerPath devices.

   Display the volume groups (vgs) in the configuration:

   dmpvios1$ lsvg 
   rootvg 
   brunovg 

   dmpvios1 lsvg -p brunovg

   brunovg: 
   PV_NAME     PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION 
   hdiskpower3 active   511       501    103..92..102..102..102

   Use the varyoffvg command on all affected vgs:

   dmpvios1$ varyoffvg brunovg

   Unmanage the EMC Clariion array from PowerPath control

   # powermt unmanage class=clariion
   hdiskpower0 deleted
   hdiskpower1 deleted
   hdiskpower2 deleted
   hdiskpower3 deleted

8. Reboot VIO server1

   dmpvios1$ reboot

9. After the VIO server1 reboots, verify that all of the existing volume groups on the VIO server1 and MPIO VTDs on the VIO server1 are successfully migrated to DMP.

   dmpvios1 lsvg -p brunovg

   brunovg: 
   PV_NAME      PV STATE TOTAL PPs FREE PPs FREE DISTRIBUTION 
   emc_clari0_138 active  511      501    103..92..102..102..102

   Verify the mappings of the LUNs on the migrated volume groups:

   dmpvios1 lsmap -all

   SVSA           Physloc                    Client Partition ID 
   -------------- -------------------------- ------------------ 
   vhost0         U9117.MMA.0686502-V2-C11   0x00000000 
   VTD              P0 
   Status           Available 
   LUN              0x8100000000000000 
   Backing device   emc_clari0_130
   Physloc 
   
   VTD              P1 
   Status           Available 
   LUN              0x8200000000000000 
   Backing device   emc_clari0_136
   Physloc 
   
   VTD              P2 
   Status           Available 
   LUN              0x8300000000000000 
   Backing device   emc_clari0_137 
   Physloc 

10. Repeat step 1 to step 9 for VIO server2.
11. Start all of the VIO clients.