To migrate from other multi-pathing solutions to DMP on a Virtual I/O server

1. Before migrating, back up the Virtual I/O servers to use for reverting the system in case of issues.
2. Shut down all VIO client partitions that are serviced by the VIOS.
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. Use commands like lsdev and lsmap to view the configuration.
5. Unconfigure all VTD devices from all virtual adapters on the system:

   dmpvios1$ rmdev -p vhost0

   Repeat this step for all other virtual adapters.

6. Migrate from the third-party device driver to DMP.

   Note that you do not need to do turn on the dmp_native_support again, because it is turned on for VIOS by default. You can use the vxdmpadm gettune dmp_native_support command to verify that the tunable parameter is turned on.

   See Migrating LVM volume groups to DMP.

7. Reboot the VIO Server partition.
8. Use the following command to verify that all Virtual SCSI mappings of TPD multi-pathing solution have been correctly migrated to DMP:

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

9. Repeat step 1 through step 8 for all of the other VIO server partitions of the managed system.
10. After all of the VIO Server partitions are successfully migrated to DMP, start all of the VIO client partitions.