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Removing physical I/O devices and slots dynamically

You can dynamically remove a physical I/O slot and the adapter and devices that are connected to that slot from a running logical partition using the Hardware Management Console (HMC). This allows you to reassign the physical I/O slot to other logical partitions.

Before you begin, vary off any devices that are attached to the managed system through the physical I/O slot that you want to remove. You can vary off devices using operating system commands.

Attention: The dynamic removal of a physical I/O slot that controls disk drives can cause unpredictable results, such as logical partition failure or loss of data.
A Linux logical partition supports the dynamic removal of physical I/O slots only if the following conditions are met:
  • A Linux distribution that supports dynamic partitioning is installed on the Linux logical partition. Distributions that support dynamic partitioning include SUSE Linux Enterprise Server 9, and later.
  • The DynamicRM tool package is installed on the Linux logical partition. To download the DynamicRM tool package, see the Service and productivity tools for Linux on POWER® systems Web site.
To remove a physical I/O slot dynamically from a running logical partition using the HMC, follow these steps:
  1. In the navigation pane of your HMC, open Systems Management, open Servers, and click the managed system on which the logical partition is located.
  2. In the work pane, select the logical partition, click the Tasks button, and choose Dynamic partitioning > Physical Adapters > Move or Remove.
  3. Select the physical I/O slot that you want to remove from the list.
  4. Ensure that any devices that are attached to the managed system through the physical I/O slot are not busy. The devices should be varied off.
  5. Click OK.
Parent topic: Managing physical I/O devices and slots dynamically

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Last updated: Thu, September 20, 2018