Replacing a version of the software

You might need to remove a version of software to replace it with a previous version.

About this task

You can only replace versions of software by previous versions if the major number in the software version has not changed. If the major number in the software version has changed, contact the IBM Support Center before proceeding.

Note: The software version number is in the format x.y.z, where x is a version release number, y is a major number, and z is a minor number. For example, version number 1.2.3 has a version release number of 1, a major number of 2, and a minor number of 3. This number determines whether software versions can revert to the previous version. It is not possible to revert a version of software to a version that has a lower major number. For example, if version 1.2.3 is running on the cluster, it can be replaced with version 1.2.2 or 1.2.1 but it cannot be replaced with version 1.1.6.

Complete the following steps to replace the current version of your software with a previous version:

Procedure

Enter the sainfo lsservicestatus command to determine the current level of the software. In the command response, the node_code_version attribute shows the software level.
Note: You can also use the management GUI to determine the software level on the system.
Determine whether the major number in the current level of the software has changed.
- If the major number in the current level of the software has not changed, you can replace it with a previous version of the software using the normal software update procedures.
- If the major number in the current level of the software has changed (has a lower major number), contact your IBM® Support Center.