HP 3PAR AIX and IBM Virtual I/O Server Implementation Guide

14 PowerVM Live Partition Mobility
IBM live partition mobility (LPM) allows the migration of an active AIX partition from one physical
server to another. The partition can be powered off, or fully active with users logged in and I/O
in progress.
LPM is simply a function of the IBM Virtual I/O Server. To make an IBM Virtual I/O Server capable
of LPM, the servers must be licensed through the COD product enablement under PowerVM.
Additionally, when initially building an IBM Virtual I/O Server, the LPAR must be enabled as a
mover service partition. When building a mobile partition, the option to allow this partition to be
suspended must be enabled.
For detailed instructions about setting up this environment, see the IBM documentation on the
installation and configuration specifics of PowerVM.
All resources defined to a mobile partition must be virtualized. This includes disks presented to the
mobile partition by means of vSCSI or NPIV.
HP 3PAR ODM must be installed on the IBM Virtual I/O Server that is hosting the mover service
partition. This package must be installed whether or not the IBM Virtual I/O Server is locally booted
from the internal hard-drive or SAN booted from the HP 3PAR disk array. If N_Port ID Virtualization
(NPIV)-type disks are being used over virtualized FC on the mobile partition, the HP 3PAR ODM
must also be installed on the mobile partition.
NOTE: All IBM Virtual I/O Server FC HBAs connected to the HP 3PAR StoreServ Storage array
must have both Dynamic Tracking and Fast_Fail enabled. Failure to set these options may
result in an error during pre-migration validation. This is especially true if an FC path has a failed
path.
To change the FC HBA options for Dynamic Tracking and Fast_Fail, issue the following
command from each HP 3PAR-connected IBM Virtual I/O Server from the oem_setup_env shell
NOTE: An IBM Virtual I/O Server reboot is required to make these changes permanent.
$ oem_setup_env
To set up Dynamic Tracking and Fast Fail on an IBM FC HBA, complete the following steps, using
the SMIT Devices menu:
1. Select FC Adapter.
2. Select FC SCSI I/O Controller Protocol Device.
3. Select Change/Show Characteristics of a FC SCSI Protocol Device.
4. Select the appropriate FC SCSI protocol device.
5. Set the following options:
• Dynamic Tracking of FC Devices to Yes.
• FC Fabric Event Error RECOVERY Policy to FastFail
• Apply change to DATABASE only to Yes
6. Exit the shell.
7. Restart the IBM Virtual I/O Server.
At this point, devices may be presented to the IBM Virtual I/O Server and exported to the mobile
LPAR by creating a vSCSI device mapped through a vhost.
There are no other HP 3PAR/HP SAN array-specific settings required to support LPM.
54 PowerVM Live Partition Mobility