Disk Passthrough to a VM

This guide explains how to assign physical disks to virtual machines (VMs) in Proxmox VE using ProxMenux. Disk passthrough allows a VM to have direct access to a physical disk, providing improved performance and compatibility for certain applications.

Overview

The script automates the following steps:

1. Lists available physical disks on the Proxmox host, excluding the system disk.
2. Displays a list of available virtual machines (VMs) for selection.
3. Allows the user to select multiple disks to assign to a VM.
4. Ensures selected disks are not already in use by another VM.
5. Configures the selected disks for passthrough to the chosen VM.

Implementation Steps

1

Disk Selection

The script scans the system and displays a list of available physical disks, excluding the system disk.

2

VM Selection

The user selects the virtual machine (VM) to which the disk(s) will be assigned.

3

Disk Assignment

The script performs the following actions:

• Ensures the selected disk is not in use by another VM.
• Provides an interface choice (SATA, SCSI, VirtIO, or IDE).
• Automatically configures the disk passthrough and assigns it to the VM.

4

Confirmation & Finalization

The script verifies the operation and confirms the successful disk passthrough.

Expected Results

• The selected physical disk(s) are successfully assigned to the specified VM.
• Users are provided with a confirmation of the disk assignment.
• The VM is configured to recognize the disk(s) upon startup.

Important Considerations

• Ensure the selected disk is not already in use by another VM.
• VMs must be powered off before adding disks to prevent data corruption.
• Using disk passthrough limits certain VM features, such as live migration.