You cannot migrate the nodes until you have first migrated the control workstation to your target AIX level |(AIX 4.3.3 or AIX 5L 5.1) and PSSP 3.4. Remember that the control workstation must always be at the latest level of AIX and PSSP to which you plan to migrate the nodes. Refer to the beginning of this chapter for that information. Keep in mind that you should always make a mksysb of all of your nodes that you want to migrate before proceeding with the migration process. For information on making a mksysb of your nodes, refer to Step 11: Back up your nodes.
You can migrate the nodes to your target AIX level and |PSSP 3.4 in one of the ways identified in the following list:
|This method applies to AIX modification level changes (for example, AIX |4.3.x to 4.3.x+1) or when |the AIX level is not changing, but you are migrating to a new level of PSSP |(for example, AIX 4.3 and PSSP 2.4 to AIX 4.3 and PSSP |3.4). This method preserves the current rootvg and installs AIX |PTF updates using the installp command. See BOS node upgrade.
|This method preserves all file systems except /tmp, as well as the |root volume group, logical volumes, and system configuration files. |This method requires the setup of AIX NIM on the new PSSP 3.4 control |workstation. This applies only to migrations when an AIX version or |release is changing |(for example, AIX 4.3.3 to AIX 5L |5.1). See BOS node migration install.
|Use this method when migrating to AIX 5L 5.1 even if the PSSP |level is already at PSSP 3.4.
|This method erases all existence of the current rootvg and installs your |target AIX level and PSSP 3.4 using either an AIX 4.3 or AIX 5L |5.1 mksysb image for the node. This installation requires the |setup of AIX NIM on the new PSSP 3.4 control workstation. See mksysb install of nodes.
Typically, a customer would migrate a node using either the migration install or upgrade methods depending upon the node's current AIX and PSSP levels. If some nodes are identical, you could create a mksysb of the node and then migrate these nodes using the mksysb install method. |Supported starting points for node migration include:
|You can migrate the nodes from any of the starting points shown in |the previous list to PSSP 3.4 either on AIX 4.3.3 or or AIX 5L 5.1.
| Important |
|---|
|
If the starting point for a node migration is PSSP 2.4 and AIX 4.2.1, you must first migrate to PSSP 3.4 and AIX 4.3.3. A second migration is required to go from PSSP 3.4 and AIX 4.3.3 to PSSP 3.4 and AIX 5L 5.1. The two migrations cannot be combined. |
If you have xlC or vacpp installed on your nodes, it is suggested that you upgrade your installed files to the level corresponding to the levels of the files shipped with PSSP before migrating PSSP. The appropriate service should have been obtained in Step 13: Copy the PSSP images for PSSP 3.4 or Step 11: Obtain additional PSSP prerequisites. Maintenance for vacpp and xlC products have a wide ifreq web and if the required file sets are not available in the lppsource or installed on the node before the migration, the migration will fail.
If you do not have xlC or vacpp installed, or if the only pieces installed are those required by PSSP, (for example, your node was previously installed or migrated to PSSP 3.4 and AIX 4.3.3 and your xlC and vacpp files were installed during that process), the files do not need to be upgraded before the migration.
If you choose the mksysb install method, any AIX corrective service applied to the mksysb must also be placed in the lppsource directory and the Shared Product Object Tree (SPOT) must be updated. Refer to the procedure documented in Task E: Update the SPOT when installing AIX BOS service updates.
If you choose the migration or upgrade methods, you need to make sure that the SPOT is up-to-date. Perform Task E: Update the SPOT when installing AIX BOS service updates.