To migrate dmpviosp6 from MPIO 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. The following command shows lsmap output before migrating MPIO VTD devices to DMP:

   dmpvios1$ /usr/ios/cli/ioscli lsmap -all 
   SVSA            Physloc                     Client Partition ID 
   --------------- --------------------------- ------------------ 
   vhost0          U9117.MMA.0686502-V2-C11    0x00000004 
   
   VTD                vtscsi0 
   Status             Available 8100000000000000 
   Backing device     hdisk21 
   LUN                0x
   Physloc            U789D.001.DQD04AF-P1-C5-T1-W500507630813861A-L4
   003403700000000
   
   VTD                vtscsi1
   Status             Available
   LUN                0x8200000000000000
   Backing device     hdisk20 
   Physloc            U789D.001.DQD04AF-P1-C5-T1-W500507630813861A-L4
   00240C100000000
   
   VTD                vtscsi2 
   Status             Available 
   LUN                0x8300000000000000 
   Backing device     hdisk18 
   Physloc            U789D.001.DQD04AF-P1-C5-T1-W500507630813861A-L4
   002409A00000000

   The VIO Server has MPIO providing multi-pathing to these hdisks. The following commands show the configuration:

   dmpvios1$ lsdev -Cc disk | egrep "hdisk21|hdisk20|hdisk18" 

   hdisk18 Available 02-08-02 MPIO Other FC SCSI Disk Drive 
   hdisk20 Available 02-08-02 MPIO Other FC SCSI Disk Drive
   hdisk21 Available 02-08-02 MPIO Other FC SCSI Disk Drive

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

   dmpvios1 $ rmdev -p vhost0
   vtscsi0 Defined
   vtscsi1 Defined
   vtscsi2 Defined

   Repeat this step for all other virtual adapters.

6. Migrate the devices from MPIO to DMP.

   Unmount the file system and varyoff volume groups residing on the MPIO 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 
   hdisk19 active   511       501      103..92..102..102..102 
   hdisk22 active   511       501      103..92..102..102..102

   Use the varyoffvg command on all affected vgs:

   dmpvios1$ varyoffvg brunovg

   Install the IBMDS8K ODM definition fileset to remove IBM MPIO support for IBM DS8K array LUNs.

   dmpvios1$ installp -aXd . devices.fcp.disk.ibm.rte

   +------------------------------------------------------+
                 Pre-installation Verification... 
   +------------------------------------------------------+
   Verifying selections...done 
   Verifying requisites...done 
   Results... 
   Installation Summary
   --------------------
   Name                      Level   Part  Event  Result 
   ------------------------------------------------------ 
   devices.fcp.disk.ibm.rte  1.0.0.2 USR   APPLY  SUCCESS 
   devices.fcp.disk.ibm.rte  1.0.0.2 ROOT  APPLY  SUCCESS

7. Reboot VIO server1

   dmpvios1$ reboot

8. 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 
   ibm_ds8000_0292 active   511       501    103..92..102..102..102
   ibm_ds8000_0293 active   511       501    103..92..102..102..102

   Verify the vSCSI mappings of IBM DS8K LUNs on the migrated volume groups:

   dmpvios1 lsmap -all

   SVSA            Physloc                      Client Partition ID 
   --------------- ---------------------------- ------------------ 
   vhost0          U9117.MMA.0686502-V2-C11     0x00000000 
   VTD                   vtscsi0 
   Status                Available 
   LUN                   0x8100000000000000 
   Backing device        ibm_ds8000_0337 
   Physloc 
   
   VTD                   vtscsi1 
   Status                Available 
   LUN                   0x8200000000000000 
   Backing device        ibm_ds8000_02c1 
   Physloc 
   
   VTD                   vtscsi2 
   Status                Available 
   LUN                   0x8300000000000000 
   Backing device        ibm_ds8000_029a 
   Physloc 

9. Repeat step 1 through step 8 for VIO server2.
10. Start all of the VIO clients using HMC.