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Alt Disk Module Overview

Alt Disk Overview​

Alt Disk refers to the management of an alternate root volume group (rootvg) disk. It involves copying the rootvg to an alternate disk or cleaning up an existing one on a logical partition (LPAR).

Operations on Alt Disk​

The alternate disk can be used for various operations such as copying the rootvg, cleaning up an existing alternate disk copy, or installing filesets and fixes on an existing alternate disk. The module provides options to specify the target disks, choose a disk based on size policy, and perform actions like copying, cleaning, or installing on the alternate disk.

Ensuring Validity​

The alt_disk module ensures that the rootvg is properly checked, and valid alternate disks are found and validated before performing the operations. This ensures that the operations are performed on the correct and intended disks.

Configuration Options​

The module also includes options to handle specific configurations such as running bootlist after the copy, copying specific files, resetting device configurations, and running customization scripts during the initial boot of the alternate rootvg.

Example of performing an alternate disk copy of the rootvg to hdisk1.

- name: Perform an alternate disk copy of the rootvg to hdisk1
  alt_disk:
    action: copy
    targets: hdisk1

Example of performing an alternate disk copy of the rootvg to the smallest disk that can be selected.

- name: Perform an alternate disk copy of the rootvg to the smallest disk that can be selected
  alt_disk:
    action: copy
    disk_size_policy: minimize

Example of performing a cleanup of any existing alternate disk copy.

  alt_disk:
    action: clean

Example of performing a cleanup of any existing alternate disk copy and old rootvg.

  alt_disk:
    action: clean
    allow_old_rootvg: true

 

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