Performing an alternate disk phased installation
The alternate disk installation can be performed in stages.
The installation is broken down into three phases. The default is to perform all three phases in the same invocation. The phases are as follows:
| Item | Description |
|---|---|
| Phase 1 | Creates the altinst_rootvg volume group, the alt_ logical volumes, and the /alt_inst file systems. Also restores the mksysb or rootvg data. |
| Phase 2 | Runs any specified customization script. For cloning only, installs updates, new filesets, fixes, or bundles. Also copies a resolv.conf file (if specified) and necessary files to remain a NIM client (if specified). |
| Phase 3 | Unmounts the /alt_inst file systems, renames the file systems and logical volumes, removes the alt_ logical volume names from ODM, and varies off the altinst_rootvg. It also sets the bootlist and reboots (if specified). |
As an alternative to running all three phases, the phases can be completed by one of the following methods:
- Each phase separately
- Phases 1 and 2 together
- Phases 2 and 3 together (Phase 2 can be run multiple times before Phase 3 is run.)
You must run Phase 3 to obtain a usable rootvg. Running Phases 1 and 2 leave the /alt_inst file systems mounted. Any time during the phase process and before rebooting, the altinst_rootvg can be removed, and disk cleanup occurs using the following command:
alt_rootvg_op -X